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authorLinus Torvalds2023-02-20 17:41:08 -0800
committerLinus Torvalds2023-02-20 17:41:08 -0800
commit1f2d9ffc7a5f916935749ffc6e93fb33bfe94d2f (patch)
treea5dabaa924d50867cbe347e20a7643b2850f11c0 /tools
parenta2f0e7eee1344eb9f91b22bc72d9eb0a52b849c9 (diff)
parent7c4a5b89a0b5a57a64b601775b296abf77a9fe97 (diff)
Merge tag 'sched-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar: - Improve the scalability of the CFS bandwidth unthrottling logic with large number of CPUs. - Fix & rework various cpuidle routines, simplify interaction with the generic scheduler code. Add __cpuidle methods as noinstr to objtool's noinstr detection and fix boatloads of cpuidle bugs & quirks. - Add new ABI: introduce MEMBARRIER_CMD_GET_REGISTRATIONS, to query previously issued registrations. - Limit scheduler slice duration to the sysctl_sched_latency period, to improve scheduling granularity with a large number of SCHED_IDLE tasks. - Debuggability enhancement on sys_exit(): warn about disabled IRQs, but also enable them to prevent a cascade of followup problems and repeat warnings. - Fix the rescheduling logic in prio_changed_dl(). - Micro-optimize cpufreq and sched-util methods. - Micro-optimize ttwu_runnable() - Micro-optimize the idle-scanning in update_numa_stats(), select_idle_capacity() and steal_cookie_task(). - Update the RSEQ code & self-tests - Constify various scheduler methods - Remove unused methods - Refine __init tags - Documentation updates - Misc other cleanups, fixes * tag 'sched-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (110 commits) sched/rt: pick_next_rt_entity(): check list_entry sched/deadline: Add more reschedule cases to prio_changed_dl() sched/fair: sanitize vruntime of entity being placed sched/fair: Remove capacity inversion detection sched/fair: unlink misfit task from cpu overutilized objtool: mem*() are not uaccess safe cpuidle: Fix poll_idle() noinstr annotation sched/clock: Make local_clock() noinstr sched/clock/x86: Mark sched_clock() noinstr x86/pvclock: Improve atomic update of last_value in pvclock_clocksource_read() x86/atomics: Always inline arch_atomic64*() cpuidle: tracing, preempt: Squash _rcuidle tracing cpuidle: tracing: Warn about !rcu_is_watching() cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG cpuidle: drivers: firmware: psci: Dont instrument suspend code KVM: selftests: Fix build of rseq test exit: Detect and fix irq disabled state in oops cpuidle, arm64: Fix the ARM64 cpuidle logic cpuidle: mvebu: Fix duplicate flags assignment sched/fair: Limit sched slice duration ...
Diffstat (limited to 'tools')
-rw-r--r--tools/objtool/check.c14
-rw-r--r--tools/testing/selftests/kvm/rseq_test.c16
-rw-r--r--tools/testing/selftests/membarrier/membarrier_test_impl.h33
-rw-r--r--tools/testing/selftests/membarrier/membarrier_test_multi_thread.c2
-rw-r--r--tools/testing/selftests/membarrier/membarrier_test_single_thread.c6
-rw-r--r--tools/testing/selftests/rseq/.gitignore4
-rw-r--r--tools/testing/selftests/rseq/Makefile20
-rw-r--r--tools/testing/selftests/rseq/basic_percpu_ops_test.c46
-rw-r--r--tools/testing/selftests/rseq/basic_test.c4
-rw-r--r--tools/testing/selftests/rseq/compiler.h6
-rw-r--r--tools/testing/selftests/rseq/param_test.c157
-rw-r--r--tools/testing/selftests/rseq/rseq-abi.h22
-rw-r--r--tools/testing/selftests/rseq/rseq-arm-bits.h505
-rw-r--r--tools/testing/selftests/rseq/rseq-arm.h701
-rw-r--r--tools/testing/selftests/rseq/rseq-arm64-bits.h392
-rw-r--r--tools/testing/selftests/rseq/rseq-arm64.h520
-rw-r--r--tools/testing/selftests/rseq/rseq-bits-reset.h11
-rw-r--r--tools/testing/selftests/rseq/rseq-bits-template.h41
-rw-r--r--tools/testing/selftests/rseq/rseq-mips-bits.h462
-rw-r--r--tools/testing/selftests/rseq/rseq-mips.h646
-rw-r--r--tools/testing/selftests/rseq/rseq-ppc-bits.h454
-rw-r--r--tools/testing/selftests/rseq/rseq-ppc.h617
-rw-r--r--tools/testing/selftests/rseq/rseq-riscv-bits.h410
-rw-r--r--tools/testing/selftests/rseq/rseq-riscv.h529
-rw-r--r--tools/testing/selftests/rseq/rseq-s390-bits.h474
-rw-r--r--tools/testing/selftests/rseq/rseq-s390.h495
-rw-r--r--tools/testing/selftests/rseq/rseq-skip.h65
-rw-r--r--tools/testing/selftests/rseq/rseq-x86-bits.h993
-rw-r--r--tools/testing/selftests/rseq/rseq-x86.h1193
-rw-r--r--tools/testing/selftests/rseq/rseq.c91
-rw-r--r--tools/testing/selftests/rseq/rseq.h215
-rwxr-xr-xtools/testing/selftests/rseq/run_param_test.sh5
32 files changed, 4484 insertions, 4665 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 4b7c8b33069e..b118f588cd2b 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -376,6 +376,7 @@ static int decode_instructions(struct objtool_file *file)
if (!strcmp(sec->name, ".noinstr.text") ||
!strcmp(sec->name, ".entry.text") ||
+ !strcmp(sec->name, ".cpuidle.text") ||
!strncmp(sec->name, ".text.__x86.", 12))
sec->noinstr = true;
@@ -1224,6 +1225,7 @@ static const char *uaccess_safe_builtin[] = {
"__ubsan_handle_type_mismatch",
"__ubsan_handle_type_mismatch_v1",
"__ubsan_handle_shift_out_of_bounds",
+ "__ubsan_handle_load_invalid_value",
/* misc */
"csum_partial_copy_generic",
"copy_mc_fragile",
@@ -3375,6 +3377,12 @@ static inline bool noinstr_call_dest(struct objtool_file *file,
return true;
/*
+ * If the symbol is a static_call trampoline, we can't tell.
+ */
+ if (func->static_call_tramp)
+ return true;
+
+ /*
* The __ubsan_handle_*() calls are like WARN(), they only happen when
* something 'BAD' happened. At the risk of taking the machine down,
* let them proceed to get the message out.
@@ -4171,6 +4179,12 @@ static int validate_noinstr_sections(struct objtool_file *file)
warnings += validate_unwind_hints(file, sec);
}
+ sec = find_section_by_name(file->elf, ".cpuidle.text");
+ if (sec) {
+ warnings += validate_section(file, sec);
+ warnings += validate_unwind_hints(file, sec);
+ }
+
return warnings;
}
diff --git a/tools/testing/selftests/kvm/rseq_test.c b/tools/testing/selftests/kvm/rseq_test.c
index 3045fdf9bdf5..f74e76d03b7e 100644
--- a/tools/testing/selftests/kvm/rseq_test.c
+++ b/tools/testing/selftests/kvm/rseq_test.c
@@ -41,18 +41,6 @@ static void guest_code(void)
GUEST_SYNC(0);
}
-/*
- * We have to perform direct system call for getcpu() because it's
- * not available until glic 2.29.
- */
-static void sys_getcpu(unsigned *cpu)
-{
- int r;
-
- r = syscall(__NR_getcpu, cpu, NULL, NULL);
- TEST_ASSERT(!r, "getcpu failed, errno = %d (%s)", errno, strerror(errno));
-}
-
static int next_cpu(int cpu)
{
/*
@@ -249,7 +237,9 @@ int main(int argc, char *argv[])
* across the seq_cnt reads.
*/
smp_rmb();
- sys_getcpu(&cpu);
+ r = sys_getcpu(&cpu, NULL);
+ TEST_ASSERT(!r, "getcpu failed, errno = %d (%s)",
+ errno, strerror(errno));
rseq_cpu = rseq_current_cpu_raw();
smp_rmb();
} while (snapshot != atomic_read(&seq_cnt));
diff --git a/tools/testing/selftests/membarrier/membarrier_test_impl.h b/tools/testing/selftests/membarrier/membarrier_test_impl.h
index 186be69f0a59..af89855adb7b 100644
--- a/tools/testing/selftests/membarrier/membarrier_test_impl.h
+++ b/tools/testing/selftests/membarrier/membarrier_test_impl.h
@@ -9,11 +9,38 @@
#include "../kselftest.h"
+static int registrations;
+
static int sys_membarrier(int cmd, int flags)
{
return syscall(__NR_membarrier, cmd, flags);
}
+static int test_membarrier_get_registrations(int cmd)
+{
+ int ret, flags = 0;
+ const char *test_name =
+ "sys membarrier MEMBARRIER_CMD_GET_REGISTRATIONS";
+
+ registrations |= cmd;
+
+ ret = sys_membarrier(MEMBARRIER_CMD_GET_REGISTRATIONS, 0);
+ if (ret < 0) {
+ ksft_exit_fail_msg(
+ "%s test: flags = %d, errno = %d\n",
+ test_name, flags, errno);
+ } else if (ret != registrations) {
+ ksft_exit_fail_msg(
+ "%s test: flags = %d, ret = %d, registrations = %d\n",
+ test_name, flags, ret, registrations);
+ }
+ ksft_test_result_pass(
+ "%s test: flags = %d, ret = %d, registrations = %d\n",
+ test_name, flags, ret, registrations);
+
+ return 0;
+}
+
static int test_membarrier_cmd_fail(void)
{
int cmd = -1, flags = 0;
@@ -113,6 +140,8 @@ static int test_membarrier_register_private_expedited_success(void)
ksft_test_result_pass(
"%s test: flags = %d\n",
test_name, flags);
+
+ test_membarrier_get_registrations(cmd);
return 0;
}
@@ -170,6 +199,8 @@ static int test_membarrier_register_private_expedited_sync_core_success(void)
ksft_test_result_pass(
"%s test: flags = %d\n",
test_name, flags);
+
+ test_membarrier_get_registrations(cmd);
return 0;
}
@@ -204,6 +235,8 @@ static int test_membarrier_register_global_expedited_success(void)
ksft_test_result_pass(
"%s test: flags = %d\n",
test_name, flags);
+
+ test_membarrier_get_registrations(cmd);
return 0;
}
diff --git a/tools/testing/selftests/membarrier/membarrier_test_multi_thread.c b/tools/testing/selftests/membarrier/membarrier_test_multi_thread.c
index ac5613e5b0eb..a9cc17facfb3 100644
--- a/tools/testing/selftests/membarrier/membarrier_test_multi_thread.c
+++ b/tools/testing/selftests/membarrier/membarrier_test_multi_thread.c
@@ -62,7 +62,7 @@ static int test_mt_membarrier(void)
int main(int argc, char **argv)
{
ksft_print_header();
- ksft_set_plan(13);
+ ksft_set_plan(16);
test_membarrier_query();
diff --git a/tools/testing/selftests/membarrier/membarrier_test_single_thread.c b/tools/testing/selftests/membarrier/membarrier_test_single_thread.c
index c1c963902854..4cdc8b1d124c 100644
--- a/tools/testing/selftests/membarrier/membarrier_test_single_thread.c
+++ b/tools/testing/selftests/membarrier/membarrier_test_single_thread.c
@@ -12,7 +12,9 @@
int main(int argc, char **argv)
{
ksft_print_header();
- ksft_set_plan(13);
+ ksft_set_plan(18);
+
+ test_membarrier_get_registrations(/*cmd=*/0);
test_membarrier_query();
@@ -20,5 +22,7 @@ int main(int argc, char **argv)
test_membarrier_success();
+ test_membarrier_get_registrations(/*cmd=*/0);
+
return ksft_exit_pass();
}
diff --git a/tools/testing/selftests/rseq/.gitignore b/tools/testing/selftests/rseq/.gitignore
index 5910888ebfe1..16496de5f6ce 100644
--- a/tools/testing/selftests/rseq/.gitignore
+++ b/tools/testing/selftests/rseq/.gitignore
@@ -1,7 +1,11 @@
# SPDX-License-Identifier: GPL-2.0-only
basic_percpu_ops_test
+basic_percpu_ops_mm_cid_test
basic_test
basic_rseq_op_test
param_test
param_test_benchmark
param_test_compare_twice
+param_test_mm_cid
+param_test_mm_cid_benchmark
+param_test_mm_cid_compare_twice
diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile
index 215e1067f037..82a52810a649 100644
--- a/tools/testing/selftests/rseq/Makefile
+++ b/tools/testing/selftests/rseq/Makefile
@@ -12,8 +12,9 @@ LDLIBS += -lpthread -ldl
# still track changes to header files and depend on shared object.
OVERRIDE_TARGETS = 1
-TEST_GEN_PROGS = basic_test basic_percpu_ops_test param_test \
- param_test_benchmark param_test_compare_twice
+TEST_GEN_PROGS = basic_test basic_percpu_ops_test basic_percpu_ops_mm_cid_test param_test \
+ param_test_benchmark param_test_compare_twice param_test_mm_cid \
+ param_test_mm_cid_benchmark param_test_mm_cid_compare_twice
TEST_GEN_PROGS_EXTENDED = librseq.so
@@ -29,6 +30,9 @@ $(OUTPUT)/librseq.so: rseq.c rseq.h rseq-*.h
$(OUTPUT)/%: %.c $(TEST_GEN_PROGS_EXTENDED) rseq.h rseq-*.h
$(CC) $(CFLAGS) $< $(LDLIBS) -lrseq -o $@
+$(OUTPUT)/basic_percpu_ops_mm_cid_test: basic_percpu_ops_test.c $(TEST_GEN_PROGS_EXTENDED) rseq.h rseq-*.h
+ $(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID_ID $< $(LDLIBS) -lrseq -o $@
+
$(OUTPUT)/param_test_benchmark: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
rseq.h rseq-*.h
$(CC) $(CFLAGS) -DBENCHMARK $< $(LDLIBS) -lrseq -o $@
@@ -36,3 +40,15 @@ $(OUTPUT)/param_test_benchmark: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
$(OUTPUT)/param_test_compare_twice: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
rseq.h rseq-*.h
$(CC) $(CFLAGS) -DRSEQ_COMPARE_TWICE $< $(LDLIBS) -lrseq -o $@
+
+$(OUTPUT)/param_test_mm_cid: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
+ rseq.h rseq-*.h
+ $(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID $< $(LDLIBS) -lrseq -o $@
+
+$(OUTPUT)/param_test_mm_cid_benchmark: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
+ rseq.h rseq-*.h
+ $(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID -DBENCHMARK $< $(LDLIBS) -lrseq -o $@
+
+$(OUTPUT)/param_test_mm_cid_compare_twice: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
+ rseq.h rseq-*.h
+ $(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID -DRSEQ_COMPARE_TWICE $< $(LDLIBS) -lrseq -o $@
diff --git a/tools/testing/selftests/rseq/basic_percpu_ops_test.c b/tools/testing/selftests/rseq/basic_percpu_ops_test.c
index 517756afc2a4..887542961968 100644
--- a/tools/testing/selftests/rseq/basic_percpu_ops_test.c
+++ b/tools/testing/selftests/rseq/basic_percpu_ops_test.c
@@ -12,6 +12,32 @@
#include "../kselftest.h"
#include "rseq.h"
+#ifdef BUILDOPT_RSEQ_PERCPU_MM_CID
+# define RSEQ_PERCPU RSEQ_PERCPU_MM_CID
+static
+int get_current_cpu_id(void)
+{
+ return rseq_current_mm_cid();
+}
+static
+bool rseq_validate_cpu_id(void)
+{
+ return rseq_mm_cid_available();
+}
+#else
+# define RSEQ_PERCPU RSEQ_PERCPU_CPU_ID
+static
+int get_current_cpu_id(void)
+{
+ return rseq_cpu_start();
+}
+static
+bool rseq_validate_cpu_id(void)
+{
+ return rseq_current_cpu_raw() >= 0;
+}
+#endif
+
struct percpu_lock_entry {
intptr_t v;
} __attribute__((aligned(128)));
@@ -51,9 +77,9 @@ int rseq_this_cpu_lock(struct percpu_lock *lock)
for (;;) {
int ret;
- cpu = rseq_cpu_start();
- ret = rseq_cmpeqv_storev(&lock->c[cpu].v,
- 0, 1, cpu);
+ cpu = get_current_cpu_id();
+ ret = rseq_cmpeqv_storev(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ &lock->c[cpu].v, 0, 1, cpu);
if (rseq_likely(!ret))
break;
/* Retry if comparison fails or rseq aborts. */
@@ -141,13 +167,14 @@ void this_cpu_list_push(struct percpu_list *list,
intptr_t *targetptr, newval, expect;
int ret;
- cpu = rseq_cpu_start();
+ cpu = get_current_cpu_id();
/* Load list->c[cpu].head with single-copy atomicity. */
expect = (intptr_t)RSEQ_READ_ONCE(list->c[cpu].head);
newval = (intptr_t)node;
targetptr = (intptr_t *)&list->c[cpu].head;
node->next = (struct percpu_list_node *)expect;
- ret = rseq_cmpeqv_storev(targetptr, expect, newval, cpu);
+ ret = rseq_cmpeqv_storev(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ targetptr, expect, newval, cpu);
if (rseq_likely(!ret))
break;
/* Retry if comparison fails or rseq aborts. */
@@ -170,12 +197,13 @@ struct percpu_list_node *this_cpu_list_pop(struct percpu_list *list,
long offset;
int ret, cpu;
- cpu = rseq_cpu_start();
+ cpu = get_current_cpu_id();
targetptr = (intptr_t *)&list->c[cpu].head;
expectnot = (intptr_t)NULL;
offset = offsetof(struct percpu_list_node, next);
load = (intptr_t *)&head;
- ret = rseq_cmpnev_storeoffp_load(targetptr, expectnot,
+ ret = rseq_cmpnev_storeoffp_load(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ targetptr, expectnot,
offset, load, cpu);
if (rseq_likely(!ret)) {
if (_cpu)
@@ -295,6 +323,10 @@ int main(int argc, char **argv)
errno, strerror(errno));
goto error;
}
+ if (!rseq_validate_cpu_id()) {
+ fprintf(stderr, "Error: cpu id getter unavailable\n");
+ goto error;
+ }
printf("spinlock\n");
test_percpu_spinlock();
printf("percpu_list\n");
diff --git a/tools/testing/selftests/rseq/basic_test.c b/tools/testing/selftests/rseq/basic_test.c
index d8efbfb89193..295eea16466f 100644
--- a/tools/testing/selftests/rseq/basic_test.c
+++ b/tools/testing/selftests/rseq/basic_test.c
@@ -22,6 +22,8 @@ void test_cpu_pointer(void)
CPU_ZERO(&test_affinity);
for (i = 0; i < CPU_SETSIZE; i++) {
if (CPU_ISSET(i, &affinity)) {
+ int node;
+
CPU_SET(i, &test_affinity);
sched_setaffinity(0, sizeof(test_affinity),
&test_affinity);
@@ -29,6 +31,8 @@ void test_cpu_pointer(void)
assert(rseq_current_cpu() == i);
assert(rseq_current_cpu_raw() == i);
assert(rseq_cpu_start() == i);
+ node = rseq_fallback_current_node();
+ assert(rseq_current_node_id() == node);
CPU_CLR(i, &test_affinity);
}
}
diff --git a/tools/testing/selftests/rseq/compiler.h b/tools/testing/selftests/rseq/compiler.h
index 876eb6a7f75b..f47092bddeba 100644
--- a/tools/testing/selftests/rseq/compiler.h
+++ b/tools/testing/selftests/rseq/compiler.h
@@ -27,4 +27,10 @@
*/
#define rseq_after_asm_goto() asm volatile ("" : : : "memory")
+/* Combine two tokens. */
+#define RSEQ__COMBINE_TOKENS(_tokena, _tokenb) \
+ _tokena##_tokenb
+#define RSEQ_COMBINE_TOKENS(_tokena, _tokenb) \
+ RSEQ__COMBINE_TOKENS(_tokena, _tokenb)
+
#endif /* RSEQ_COMPILER_H_ */
diff --git a/tools/testing/selftests/rseq/param_test.c b/tools/testing/selftests/rseq/param_test.c
index ef29bc16f358..bf951a490bb4 100644
--- a/tools/testing/selftests/rseq/param_test.c
+++ b/tools/testing/selftests/rseq/param_test.c
@@ -16,6 +16,7 @@
#include <signal.h>
#include <errno.h>
#include <stddef.h>
+#include <stdbool.h>
static inline pid_t rseq_gettid(void)
{
@@ -36,13 +37,9 @@ static int opt_modulo, verbose;
static int opt_yield, opt_signal, opt_sleep,
opt_disable_rseq, opt_threads = 200,
- opt_disable_mod = 0, opt_test = 's', opt_mb = 0;
+ opt_disable_mod = 0, opt_test = 's';
-#ifndef RSEQ_SKIP_FASTPATH
static long long opt_reps = 5000;
-#else
-static long long opt_reps = 100;
-#endif
static __thread __attribute__((tls_model("initial-exec")))
unsigned int signals_delivered;
@@ -268,6 +265,63 @@ unsigned int yield_mod_cnt, nr_abort;
#include "rseq.h"
+static enum rseq_mo opt_mo = RSEQ_MO_RELAXED;
+
+#ifdef RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV
+#define TEST_MEMBARRIER
+
+static int sys_membarrier(int cmd, int flags, int cpu_id)
+{
+ return syscall(__NR_membarrier, cmd, flags, cpu_id);
+}
+#endif
+
+#ifdef BUILDOPT_RSEQ_PERCPU_MM_CID
+# define RSEQ_PERCPU RSEQ_PERCPU_MM_CID
+static
+int get_current_cpu_id(void)
+{
+ return rseq_current_mm_cid();
+}
+static
+bool rseq_validate_cpu_id(void)
+{
+ return rseq_mm_cid_available();
+}
+# ifdef TEST_MEMBARRIER
+/*
+ * Membarrier does not currently support targeting a mm_cid, so
+ * issue the barrier on all cpus.
+ */
+static
+int rseq_membarrier_expedited(int cpu)
+{
+ return sys_membarrier(MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ,
+ 0, 0);
+}
+# endif /* TEST_MEMBARRIER */
+#else
+# define RSEQ_PERCPU RSEQ_PERCPU_CPU_ID
+static
+int get_current_cpu_id(void)
+{
+ return rseq_cpu_start();
+}
+static
+bool rseq_validate_cpu_id(void)
+{
+ return rseq_current_cpu_raw() >= 0;
+}
+# ifdef TEST_MEMBARRIER
+static
+int rseq_membarrier_expedited(int cpu)
+{
+ return sys_membarrier(MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ,
+ MEMBARRIER_CMD_FLAG_CPU, cpu);
+}
+# endif /* TEST_MEMBARRIER */
+#endif
+
struct percpu_lock_entry {
intptr_t v;
} __attribute__((aligned(128)));
@@ -355,8 +409,14 @@ static int rseq_this_cpu_lock(struct percpu_lock *lock)
for (;;) {
int ret;
- cpu = rseq_cpu_start();
- ret = rseq_cmpeqv_storev(&lock->c[cpu].v,
+ cpu = get_current_cpu_id();
+ if (cpu < 0) {
+ fprintf(stderr, "pid: %d: tid: %d, cpu: %d: cid: %d\n",
+ getpid(), (int) rseq_gettid(), rseq_current_cpu_raw(), cpu);
+ abort();
+ }
+ ret = rseq_cmpeqv_storev(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ &lock->c[cpu].v,
0, 1, cpu);
if (rseq_likely(!ret))
break;
@@ -473,8 +533,9 @@ void *test_percpu_inc_thread(void *arg)
do {
int cpu;
- cpu = rseq_cpu_start();
- ret = rseq_addv(&data->c[cpu].count, 1, cpu);
+ cpu = get_current_cpu_id();
+ ret = rseq_addv(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ &data->c[cpu].count, 1, cpu);
} while (rseq_unlikely(ret));
#ifndef BENCHMARK
if (i != 0 && !(i % (reps / 10)))
@@ -543,13 +604,14 @@ void this_cpu_list_push(struct percpu_list *list,
intptr_t *targetptr, newval, expect;
int ret;
- cpu = rseq_cpu_start();
+ cpu = get_current_cpu_id();
/* Load list->c[cpu].head with single-copy atomicity. */
expect = (intptr_t)RSEQ_READ_ONCE(list->c[cpu].head);
newval = (intptr_t)node;
targetptr = (intptr_t *)&list->c[cpu].head;
node->next = (struct percpu_list_node *)expect;
- ret = rseq_cmpeqv_storev(targetptr, expect, newval, cpu);
+ ret = rseq_cmpeqv_storev(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ targetptr, expect, newval, cpu);
if (rseq_likely(!ret))
break;
/* Retry if comparison fails or rseq aborts. */
@@ -575,13 +637,14 @@ struct percpu_list_node *this_cpu_list_pop(struct percpu_list *list,
long offset;
int ret;
- cpu = rseq_cpu_start();
+ cpu = get_current_cpu_id();
targetptr = (intptr_t *)&list->c[cpu].head;
expectnot = (intptr_t)NULL;
offset = offsetof(struct percpu_list_node, next);
load = (intptr_t *)&head;
- ret = rseq_cmpnev_storeoffp_load(targetptr, expectnot,
- offset, load, cpu);
+ ret = rseq_cmpnev_storeoffp_load(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ targetptr, expectnot,
+ offset, load, cpu);
if (rseq_likely(!ret)) {
node = head;
break;
@@ -719,7 +782,7 @@ bool this_cpu_buffer_push(struct percpu_buffer *buffer,
intptr_t offset;
int ret;
- cpu = rseq_cpu_start();
+ cpu = get_current_cpu_id();
offset = RSEQ_READ_ONCE(buffer->c[cpu].offset);
if (offset == buffer->c[cpu].buflen)
break;
@@ -727,14 +790,9 @@ bool this_cpu_buffer_push(struct percpu_buffer *buffer,
targetptr_spec = (intptr_t *)&buffer->c[cpu].array[offset];
newval_final = offset + 1;
targetptr_final = &buffer->c[cpu].offset;
- if (opt_mb)
- ret = rseq_cmpeqv_trystorev_storev_release(
- targetptr_final, offset, targetptr_spec,
- newval_spec, newval_final, cpu);
- else
- ret = rseq_cmpeqv_trystorev_storev(targetptr_final,
- offset, targetptr_spec, newval_spec,
- newval_final, cpu);
+ ret = rseq_cmpeqv_trystorev_storev(opt_mo, RSEQ_PERCPU,
+ targetptr_final, offset, targetptr_spec,
+ newval_spec, newval_final, cpu);
if (rseq_likely(!ret)) {
result = true;
break;
@@ -757,7 +815,7 @@ struct percpu_buffer_node *this_cpu_buffer_pop(struct percpu_buffer *buffer,
intptr_t offset;
int ret;
- cpu = rseq_cpu_start();
+ cpu = get_current_cpu_id();
/* Load offset with single-copy atomicity. */
offset = RSEQ_READ_ONCE(buffer->c[cpu].offset);
if (offset == 0) {
@@ -767,7 +825,8 @@ struct percpu_buffer_node *this_cpu_buffer_pop(struct percpu_buffer *buffer,
head = RSEQ_READ_ONCE(buffer->c[cpu].array[offset - 1]);
newval = offset - 1;
targetptr = (intptr_t *)&buffer->c[cpu].offset;
- ret = rseq_cmpeqv_cmpeqv_storev(targetptr, offset,
+ ret = rseq_cmpeqv_cmpeqv_storev(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ targetptr, offset,
(intptr_t *)&buffer->c[cpu].array[offset - 1],
(intptr_t)head, newval, cpu);
if (rseq_likely(!ret))
@@ -924,7 +983,7 @@ bool this_cpu_memcpy_buffer_push(struct percpu_memcpy_buffer *buffer,
size_t copylen;
int ret;
- cpu = rseq_cpu_start();
+ cpu = get_current_cpu_id();
/* Load offset with single-copy atomicity. */
offset = RSEQ_READ_ONCE(buffer->c[cpu].offset);
if (offset == buffer->c[cpu].buflen)
@@ -935,15 +994,11 @@ bool this_cpu_memcpy_buffer_push(struct percpu_memcpy_buffer *buffer,
copylen = sizeof(item);
newval_final = offset + 1;
targetptr_final = &buffer->c[cpu].offset;
- if (opt_mb)
- ret = rseq_cmpeqv_trymemcpy_storev_release(
- targetptr_final, offset,
- destptr, srcptr, copylen,
- newval_final, cpu);
- else
- ret = rseq_cmpeqv_trymemcpy_storev(targetptr_final,
- offset, destptr, srcptr, copylen,
- newval_final, cpu);
+ ret = rseq_cmpeqv_trymemcpy_storev(
+ opt_mo, RSEQ_PERCPU,
+ targetptr_final, offset,
+ destptr, srcptr, copylen,
+ newval_final, cpu);
if (rseq_likely(!ret)) {
result = true;
break;
@@ -968,7 +1023,7 @@ bool this_cpu_memcpy_buffer_pop(struct percpu_memcpy_buffer *buffer,
size_t copylen;
int ret;
- cpu = rseq_cpu_start();
+ cpu = get_current_cpu_id();
/* Load offset with single-copy atomicity. */
offset = RSEQ_READ_ONCE(buffer->c[cpu].offset);
if (offset == 0)
@@ -979,8 +1034,8 @@ bool this_cpu_memcpy_buffer_pop(struct percpu_memcpy_buffer *buffer,
copylen = sizeof(*item);
newval_final = offset - 1;
targetptr_final = &buffer->c[cpu].offset;
- ret = rseq_cmpeqv_trymemcpy_storev(targetptr_final,
- offset, destptr, srcptr, copylen,
+ ret = rseq_cmpeqv_trymemcpy_storev(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ targetptr_final, offset, destptr, srcptr, copylen,
newval_final, cpu);
if (rseq_likely(!ret)) {
result = true;
@@ -1155,7 +1210,7 @@ static int set_signal_handler(void)
}
/* Test MEMBARRIER_CMD_PRIVATE_RESTART_RSEQ_ON_CPU membarrier command. */
-#ifdef RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV
+#ifdef TEST_MEMBARRIER
struct test_membarrier_thread_args {
int stop;
intptr_t percpu_list_ptr;
@@ -1182,9 +1237,10 @@ void *test_membarrier_worker_thread(void *arg)
int ret;
do {
- int cpu = rseq_cpu_start();
+ int cpu = get_current_cpu_id();
- ret = rseq_offset_deref_addv(&args->percpu_list_ptr,
+ ret = rseq_offset_deref_addv(RSEQ_MO_RELAXED, RSEQ_PERCPU,
+ &args->percpu_list_ptr,
sizeof(struct percpu_list_entry) * cpu, 1, cpu);
} while (rseq_unlikely(ret));
}
@@ -1221,11 +1277,6 @@ void test_membarrier_free_percpu_list(struct percpu_list *list)
free(list->c[i].head);
}
-static int sys_membarrier(int cmd, int flags, int cpu_id)
-{
- return syscall(__NR_membarrier, cmd, flags, cpu_id);
-}
-
/*
* The manager thread swaps per-cpu lists that worker threads see,
* and validates that there are no unexpected modifications.
@@ -1264,8 +1315,7 @@ void *test_membarrier_manager_thread(void *arg)
/* Make list_b "active". */
atomic_store(&args->percpu_list_ptr, (intptr_t)&list_b);
- if (sys_membarrier(MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ,
- MEMBARRIER_CMD_FLAG_CPU, cpu_a) &&
+ if (rseq_membarrier_expedited(cpu_a) &&
errno != ENXIO /* missing CPU */) {
perror("sys_membarrier");
abort();
@@ -1288,8 +1338,7 @@ void *test_membarrier_manager_thread(void *arg)
/* Make list_a "active". */
atomic_store(&args->percpu_list_ptr, (intptr_t)&list_a);
- if (sys_membarrier(MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ,
- MEMBARRIER_CMD_FLAG_CPU, cpu_b) &&
+ if (rseq_membarrier_expedited(cpu_b) &&
errno != ENXIO /* missing CPU*/) {
perror("sys_membarrier");
abort();
@@ -1360,7 +1409,7 @@ void test_membarrier(void)
abort();
}
}
-#else /* RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV */
+#else /* TEST_MEMBARRIER */
void test_membarrier(void)
{
fprintf(stderr, "rseq_offset_deref_addv is not implemented on this architecture. "
@@ -1517,7 +1566,7 @@ int main(int argc, char **argv)
verbose = 1;
break;
case 'M':
- opt_mb = 1;
+ opt_mo = RSEQ_MO_RELEASE;
break;
default:
show_usage(argc, argv);
@@ -1537,6 +1586,10 @@ int main(int argc, char **argv)
if (!opt_disable_rseq && rseq_register_current_thread())
goto error;
+ if (!opt_disable_rseq && !rseq_validate_cpu_id()) {
+ fprintf(stderr, "Error: cpu id getter unavailable\n");
+ goto error;
+ }
switch (opt_test) {
case 's':
printf_verbose("spinlock\n");
diff --git a/tools/testing/selftests/rseq/rseq-abi.h b/tools/testing/selftests/rseq/rseq-abi.h
index a8c44d9af71f..fb4ec8a75dd4 100644
--- a/tools/testing/selftests/rseq/rseq-abi.h
+++ b/tools/testing/selftests/rseq/rseq-abi.h
@@ -146,6 +146,28 @@ struct rseq_abi {
* this thread.
*/
__u32 flags;
+
+ /*
+ * Restartable sequences node_id field. Updated by the kernel. Read by
+ * user-space with single-copy atomicity semantics. This field should
+ * only be read by the thread which registered this data structure.
+ * Aligned on 32-bit. Contains the current NUMA node ID.
+ */
+ __u32 node_id;
+
+ /*
+ * Restartable sequences mm_cid field. Updated by the kernel. Read by
+ * user-space with single-copy atomicity semantics. This field should
+ * only be read by the thread which registered this data structure.
+ * Aligned on 32-bit. Contains the current thread's concurrency ID
+ * (allocated uniquely within a memory map).
+ */
+ __u32 mm_cid;
+
+ /*
+ * Flexible array member at end of structure, after last feature field.
+ */
+ char end[];
} __attribute__((aligned(4 * sizeof(__u64))));
#endif /* _RSEQ_ABI_H */
diff --git a/tools/testing/selftests/rseq/rseq-arm-bits.h b/tools/testing/selftests/rseq/rseq-arm-bits.h
new file mode 100644
index 000000000000..4f03cb395462
--- /dev/null
+++ b/tools/testing/selftests/rseq/rseq-arm-bits.h
@@ -0,0 +1,505 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * rseq-arm-bits.h
+ *
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
+#include "rseq-bits-template.h"
+
+#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ "ldr r0, %[v]\n\t"
+ "cmp %[expect], r0\n\t"
+ "bne %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ "ldr r0, %[v]\n\t"
+ "cmp %[expect], r0\n\t"
+ "bne %l[error2]\n\t"
+#endif
+ /* final store */
+ "str %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "r0", "memory", "cc"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
+ long voffp, intptr_t *load, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ "ldr r0, %[v]\n\t"
+ "cmp %[expectnot], r0\n\t"
+ "beq %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ "ldr r0, %[v]\n\t"
+ "cmp %[expectnot], r0\n\t"
+ "beq %l[error2]\n\t"
+#endif
+ "str r0, %[load]\n\t"
+ "add r0, %[voffp]\n\t"
+ "ldr r0, [r0]\n\t"
+ /* final store */
+ "str r0, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [expectnot] "r" (expectnot),
+ [voffp] "Ir" (voffp),
+ [load] "m" (*load)
+ RSEQ_INJECT_INPUT
+ : "r0", "memory", "cc"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+#endif
+ "ldr r0, %[v]\n\t"
+ "add r0, %[count]\n\t"
+ /* final store */
+ "str r0, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(4)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [count] "Ir" (count)
+ RSEQ_INJECT_INPUT
+ : "r0", "memory", "cc"
+ RSEQ_INJECT_CLOBBER
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t expect2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ "ldr r0, %[v]\n\t"
+ "cmp %[expect], r0\n\t"
+ "bne %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+ "ldr r0, %[v2]\n\t"
+ "cmp %[expect2], r0\n\t"
+ "bne %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ "ldr r0, %[v]\n\t"
+ "cmp %[expect], r0\n\t"
+ "bne %l[error2]\n\t"
+ "ldr r0, %[v2]\n\t"
+ "cmp %[expect2], r0\n\t"
+ "bne %l[error3]\n\t"
+#endif
+ /* final store */
+ "str %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* cmp2 input */
+ [v2] "m" (*v2),
+ [expect2] "r" (expect2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "r0", "memory", "cc"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2, error3
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("1st expected value comparison failed");
+error3:
+ rseq_after_asm_goto();
+ rseq_bug("2nd expected value comparison failed");
+#endif
+}
+
+#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t newv2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ "ldr r0, %[v]\n\t"
+ "cmp %[expect], r0\n\t"
+ "bne %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ "ldr r0, %[v]\n\t"
+ "cmp %[expect], r0\n\t"
+ "bne %l[error2]\n\t"
+#endif
+ /* try store */
+ "str %[newv2], %[v2]\n\t"
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ "dmb\n\t" /* full mb provides store-release */
+#endif
+ /* final store */
+ "str %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* try store input */
+ [v2] "m" (*v2),
+ [newv2] "r" (newv2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "r0", "memory", "cc"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
+ void *dst, void *src, size_t len,
+ intptr_t newv, int cpu)
+{
+ uint32_t rseq_scratch[3];
+
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ "str %[src], %[rseq_scratch0]\n\t"
+ "str %[dst], %[rseq_scratch1]\n\t"
+ "str %[len], %[rseq_scratch2]\n\t"
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ "ldr r0, %[v]\n\t"
+ "cmp %[expect], r0\n\t"
+ "bne 5f\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 6f)
+ "ldr r0, %[v]\n\t"
+ "cmp %[expect], r0\n\t"
+ "bne 7f\n\t"
+#endif
+ /* try memcpy */
+ "cmp %[len], #0\n\t" \
+ "beq 333f\n\t" \
+ "222:\n\t" \
+ "ldrb %%r0, [%[src]]\n\t" \
+ "strb %%r0, [%[dst]]\n\t" \
+ "adds %[src], #1\n\t" \
+ "adds %[dst], #1\n\t" \
+ "subs %[len], #1\n\t" \
+ "bne 222b\n\t" \
+ "333:\n\t" \
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ "dmb\n\t" /* full mb provides store-release */
+#endif
+ /* final store */
+ "str %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ /* teardown */
+ "ldr %[len], %[rseq_scratch2]\n\t"
+ "ldr %[dst], %[rseq_scratch1]\n\t"
+ "ldr %[src], %[rseq_scratch0]\n\t"
+ "b 8f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4,
+ /* teardown */
+ "ldr %[len], %[rseq_scratch2]\n\t"
+ "ldr %[dst], %[rseq_scratch1]\n\t"
+ "ldr %[src], %[rseq_scratch0]\n\t",
+ abort, 1b, 2b, 4f)
+ RSEQ_ASM_DEFINE_CMPFAIL(5,
+ /* teardown */
+ "ldr %[len], %[rseq_scratch2]\n\t"
+ "ldr %[dst], %[rseq_scratch1]\n\t"
+ "ldr %[src], %[rseq_scratch0]\n\t",
+ cmpfail)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_CMPFAIL(6,
+ /* teardown */
+ "ldr %[len], %[rseq_scratch2]\n\t"
+ "ldr %[dst], %[rseq_scratch1]\n\t"
+ "ldr %[src], %[rseq_scratch0]\n\t",
+ error1)
+ RSEQ_ASM_DEFINE_CMPFAIL(7,
+ /* teardown */
+ "ldr %[len], %[rseq_scratch2]\n\t"
+ "ldr %[dst], %[rseq_scratch1]\n\t"
+ "ldr %[src], %[rseq_scratch0]\n\t",
+ error2)
+#endif
+ "8:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv),
+ /* try memcpy input */
+ [dst] "r" (dst),
+ [src] "r" (src),
+ [len] "r" (len),
+ [rseq_scratch0] "m" (rseq_scratch[0]),
+ [rseq_scratch1] "m" (rseq_scratch[1]),
+ [rseq_scratch2] "m" (rseq_scratch[2])
+ RSEQ_INJECT_INPUT
+ : "r0", "memory", "cc"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#include "rseq-bits-reset.h"
diff --git a/tools/testing/selftests/rseq/rseq-arm.h b/tools/testing/selftests/rseq/rseq-arm.h
index 893a11eca9d5..8414fc3eac15 100644
--- a/tools/testing/selftests/rseq/rseq-arm.h
+++ b/tools/testing/selftests/rseq/rseq-arm.h
@@ -2,7 +2,7 @@
/*
* rseq-arm.h
*
- * (C) Copyright 2016-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
/*
@@ -79,10 +79,6 @@ do { \
RSEQ_WRITE_ONCE(*p, v); \
} while (0)
-#ifdef RSEQ_SKIP_FASTPATH
-#include "rseq-skip.h"
-#else /* !RSEQ_SKIP_FASTPATH */
-
#define __RSEQ_ASM_DEFINE_TABLE(label, version, flags, start_ip, \
post_commit_offset, abort_ip) \
".pushsection __rseq_cs, \"aw\"\n\t" \
@@ -147,681 +143,34 @@ do { \
teardown \
"b %l[" __rseq_str(cmpfail_label) "]\n\t"
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne %l[error2]\n\t"
-#endif
- /* final store */
- "str %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "r0", "memory", "cc"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
- long voffp, intptr_t *load, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- "ldr r0, %[v]\n\t"
- "cmp %[expectnot], r0\n\t"
- "beq %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- "ldr r0, %[v]\n\t"
- "cmp %[expectnot], r0\n\t"
- "beq %l[error2]\n\t"
-#endif
- "str r0, %[load]\n\t"
- "add r0, %[voffp]\n\t"
- "ldr r0, [r0]\n\t"
- /* final store */
- "str r0, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expectnot] "r" (expectnot),
- [voffp] "Ir" (voffp),
- [load] "m" (*load)
- RSEQ_INJECT_INPUT
- : "r0", "memory", "cc"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_addv(intptr_t *v, intptr_t count, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
-#endif
- "ldr r0, %[v]\n\t"
- "add r0, %[count]\n\t"
- /* final store */
- "str r0, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(4)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [count] "Ir" (count)
- RSEQ_INJECT_INPUT
- : "r0", "memory", "cc"
- RSEQ_INJECT_CLOBBER
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne %l[error2]\n\t"
-#endif
- /* try store */
- "str %[newv2], %[v2]\n\t"
- RSEQ_INJECT_ASM(5)
- /* final store */
- "str %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "r" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "r0", "memory", "cc"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
+/* Per-cpu-id indexing. */
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne %l[error2]\n\t"
-#endif
- /* try store */
- "str %[newv2], %[v2]\n\t"
- RSEQ_INJECT_ASM(5)
- "dmb\n\t" /* full mb provides store-release */
- /* final store */
- "str %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "r" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "r0", "memory", "cc"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_CPU_ID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-arm-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t expect2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-arm-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_CPU_ID
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
- "ldr r0, %[v2]\n\t"
- "cmp %[expect2], r0\n\t"
- "bne %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(5)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne %l[error2]\n\t"
- "ldr r0, %[v2]\n\t"
- "cmp %[expect2], r0\n\t"
- "bne %l[error3]\n\t"
-#endif
- /* final store */
- "str %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* cmp2 input */
- [v2] "m" (*v2),
- [expect2] "r" (expect2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "r0", "memory", "cc"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2, error3
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("1st expected value comparison failed");
-error3:
- rseq_after_asm_goto();
- rseq_bug("2nd expected value comparison failed");
-#endif
-}
+/* Per-mm-cid indexing. */
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- uint32_t rseq_scratch[3];
+#define RSEQ_TEMPLATE_MM_CID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-arm-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
- RSEQ_INJECT_C(9)
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-arm-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_MM_CID
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- "str %[src], %[rseq_scratch0]\n\t"
- "str %[dst], %[rseq_scratch1]\n\t"
- "str %[len], %[rseq_scratch2]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne 5f\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 6f)
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne 7f\n\t"
-#endif
- /* try memcpy */
- "cmp %[len], #0\n\t" \
- "beq 333f\n\t" \
- "222:\n\t" \
- "ldrb %%r0, [%[src]]\n\t" \
- "strb %%r0, [%[dst]]\n\t" \
- "adds %[src], #1\n\t" \
- "adds %[dst], #1\n\t" \
- "subs %[len], #1\n\t" \
- "bne 222b\n\t" \
- "333:\n\t" \
- RSEQ_INJECT_ASM(5)
- /* final store */
- "str %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t"
- "b 8f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4,
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t",
- abort, 1b, 2b, 4f)
- RSEQ_ASM_DEFINE_CMPFAIL(5,
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t",
- cmpfail)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_CMPFAIL(6,
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t",
- error1)
- RSEQ_ASM_DEFINE_CMPFAIL(7,
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t",
- error2)
-#endif
- "8:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len),
- [rseq_scratch0] "m" (rseq_scratch[0]),
- [rseq_scratch1] "m" (rseq_scratch[1]),
- [rseq_scratch2] "m" (rseq_scratch[2])
- RSEQ_INJECT_INPUT
- : "r0", "memory", "cc"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- uint32_t rseq_scratch[3];
-
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- "str %[src], %[rseq_scratch0]\n\t"
- "str %[dst], %[rseq_scratch1]\n\t"
- "str %[len], %[rseq_scratch2]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne 5f\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 6f)
- "ldr r0, %[v]\n\t"
- "cmp %[expect], r0\n\t"
- "bne 7f\n\t"
-#endif
- /* try memcpy */
- "cmp %[len], #0\n\t" \
- "beq 333f\n\t" \
- "222:\n\t" \
- "ldrb %%r0, [%[src]]\n\t" \
- "strb %%r0, [%[dst]]\n\t" \
- "adds %[src], #1\n\t" \
- "adds %[dst], #1\n\t" \
- "subs %[len], #1\n\t" \
- "bne 222b\n\t" \
- "333:\n\t" \
- RSEQ_INJECT_ASM(5)
- "dmb\n\t" /* full mb provides store-release */
- /* final store */
- "str %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t"
- "b 8f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4,
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t",
- abort, 1b, 2b, 4f)
- RSEQ_ASM_DEFINE_CMPFAIL(5,
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t",
- cmpfail)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_CMPFAIL(6,
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t",
- error1)
- RSEQ_ASM_DEFINE_CMPFAIL(7,
- /* teardown */
- "ldr %[len], %[rseq_scratch2]\n\t"
- "ldr %[dst], %[rseq_scratch1]\n\t"
- "ldr %[src], %[rseq_scratch0]\n\t",
- error2)
-#endif
- "8:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len),
- [rseq_scratch0] "m" (rseq_scratch[0]),
- [rseq_scratch1] "m" (rseq_scratch[1]),
- [rseq_scratch2] "m" (rseq_scratch[2])
- RSEQ_INJECT_INPUT
- : "r0", "memory", "cc"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
+/* APIs which are not based on cpu ids. */
-#endif /* !RSEQ_SKIP_FASTPATH */
+#define RSEQ_TEMPLATE_CPU_ID_NONE
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-arm-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+#undef RSEQ_TEMPLATE_CPU_ID_NONE
diff --git a/tools/testing/selftests/rseq/rseq-arm64-bits.h b/tools/testing/selftests/rseq/rseq-arm64-bits.h
new file mode 100644
index 000000000000..cc7226b1efe1
--- /dev/null
+++ b/tools/testing/selftests/rseq/rseq-arm64-bits.h
@@ -0,0 +1,392 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * rseq-arm64-bits.h
+ *
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * (C) Copyright 2018 - Will Deacon <will.deacon@arm.com>
+ */
+
+#include "rseq-bits-template.h"
+
+#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
+#endif
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "Qo" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "Qo" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
+ long voffp, intptr_t *load, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPNE(v, expectnot, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ RSEQ_ASM_OP_CMPNE(v, expectnot, %l[error2])
+#endif
+ RSEQ_ASM_OP_R_LOAD(v)
+ RSEQ_ASM_OP_R_STORE(load)
+ RSEQ_ASM_OP_R_LOAD_OFF(voffp)
+ RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "Qo" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "Qo" (*v),
+ [expectnot] "r" (expectnot),
+ [load] "Qo" (*load),
+ [voffp] "r" (voffp)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+#endif
+ RSEQ_ASM_OP_R_LOAD(v)
+ RSEQ_ASM_OP_R_ADD(count)
+ RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "Qo" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "Qo" (*v),
+ [count] "r" (count)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t expect2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error3])
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[cmpfail])
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
+ RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[error3])
+#endif
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "Qo" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "Qo" (*v),
+ [expect] "r" (expect),
+ [v2] "Qo" (*v2),
+ [expect2] "r" (expect2),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2, error3
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+error3:
+ rseq_after_asm_goto();
+ rseq_bug("2nd expected value comparison failed");
+#endif
+}
+
+#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t newv2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
+#endif
+ RSEQ_ASM_OP_STORE(newv2, v2)
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 3)
+#else
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
+#endif
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "Qo" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [expect] "r" (expect),
+ [v] "Qo" (*v),
+ [newv] "r" (newv),
+ [v2] "Qo" (*v2),
+ [newv2] "r" (newv2)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
+ void *dst, void *src, size_t len,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
+#endif
+ RSEQ_ASM_OP_R_BAD_MEMCPY(dst, src, len)
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 3)
+#else
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
+#endif
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "Qo" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [expect] "r" (expect),
+ [v] "Qo" (*v),
+ [newv] "r" (newv),
+ [dst] "r" (dst),
+ [src] "r" (src),
+ [len] "r" (len)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG, RSEQ_ASM_TMP_REG_2
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#include "rseq-bits-reset.h"
diff --git a/tools/testing/selftests/rseq/rseq-arm64.h b/tools/testing/selftests/rseq/rseq-arm64.h
index cbe190a4d005..85b90977e7e6 100644
--- a/tools/testing/selftests/rseq/rseq-arm64.h
+++ b/tools/testing/selftests/rseq/rseq-arm64.h
@@ -2,7 +2,7 @@
/*
* rseq-arm64.h
*
- * (C) Copyright 2016-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
* (C) Copyright 2018 - Will Deacon <will.deacon@arm.com>
*/
@@ -85,10 +85,6 @@ do { \
} \
} while (0)
-#ifdef RSEQ_SKIP_FASTPATH
-#include "rseq-skip.h"
-#else /* !RSEQ_SKIP_FASTPATH */
-
#define RSEQ_ASM_TMP_REG32 "w15"
#define RSEQ_ASM_TMP_REG "x15"
#define RSEQ_ASM_TMP_REG_2 "x14"
@@ -204,492 +200,34 @@ do { \
" cbnz " RSEQ_ASM_TMP_REG_2 ", 222b\n" \
"333:\n"
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "Qo" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
- long voffp, intptr_t *load, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPNE(v, expectnot, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- RSEQ_ASM_OP_CMPNE(v, expectnot, %l[error2])
-#endif
- RSEQ_ASM_OP_R_LOAD(v)
- RSEQ_ASM_OP_R_STORE(load)
- RSEQ_ASM_OP_R_LOAD_OFF(voffp)
- RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "Qo" (*v),
- [expectnot] "r" (expectnot),
- [load] "Qo" (*load),
- [voffp] "r" (voffp)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
+/* Per-cpu-id indexing. */
-static inline __attribute__((always_inline))
-int rseq_addv(intptr_t *v, intptr_t count, int cpu)
-{
- RSEQ_INJECT_C(9)
+#define RSEQ_TEMPLATE_CPU_ID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-arm64-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
-#endif
- RSEQ_ASM_OP_R_LOAD(v)
- RSEQ_ASM_OP_R_ADD(count)
- RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "Qo" (*v),
- [count] "r" (count)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- RSEQ_ASM_OP_STORE(newv2, v2)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [expect] "r" (expect),
- [v] "Qo" (*v),
- [newv] "r" (newv),
- [v2] "Qo" (*v2),
- [newv2] "r" (newv2)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- RSEQ_ASM_OP_STORE(newv2, v2)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [expect] "r" (expect),
- [v] "Qo" (*v),
- [newv] "r" (newv),
- [v2] "Qo" (*v2),
- [newv2] "r" (newv2)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t expect2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error3])
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[cmpfail])
- RSEQ_INJECT_ASM(5)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
- RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[error3])
-#endif
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "Qo" (*v),
- [expect] "r" (expect),
- [v2] "Qo" (*v2),
- [expect2] "r" (expect2),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2, error3
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-error3:
- rseq_after_asm_goto();
- rseq_bug("2nd expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- RSEQ_ASM_OP_R_BAD_MEMCPY(dst, src, len)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [expect] "r" (expect),
- [v] "Qo" (*v),
- [newv] "r" (newv),
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG, RSEQ_ASM_TMP_REG_2
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, %l[error2])
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- RSEQ_ASM_OP_R_BAD_MEMCPY(dst, src, len)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "Qo" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [expect] "r" (expect),
- [v] "Qo" (*v),
- [newv] "r" (newv),
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG, RSEQ_ASM_TMP_REG_2
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-arm64-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_CPU_ID
+
+/* Per-mm-cid indexing. */
+
+#define RSEQ_TEMPLATE_MM_CID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-arm64-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-arm64-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_MM_CID
+
+/* APIs which are not based on cpu ids. */
-#endif /* !RSEQ_SKIP_FASTPATH */
+#define RSEQ_TEMPLATE_CPU_ID_NONE
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-arm64-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+#undef RSEQ_TEMPLATE_CPU_ID_NONE
diff --git a/tools/testing/selftests/rseq/rseq-bits-reset.h b/tools/testing/selftests/rseq/rseq-bits-reset.h
new file mode 100644
index 000000000000..e8655089f9cb
--- /dev/null
+++ b/tools/testing/selftests/rseq/rseq-bits-reset.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * rseq-bits-reset.h
+ *
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
+#undef RSEQ_TEMPLATE_IDENTIFIER
+#undef RSEQ_TEMPLATE_CPU_ID_FIELD
+#undef RSEQ_TEMPLATE_CPU_ID_OFFSET
+#undef RSEQ_TEMPLATE_SUFFIX
diff --git a/tools/testing/selftests/rseq/rseq-bits-template.h b/tools/testing/selftests/rseq/rseq-bits-template.h
new file mode 100644
index 000000000000..65698d6a6cf9
--- /dev/null
+++ b/tools/testing/selftests/rseq/rseq-bits-template.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * rseq-bits-template.h
+ *
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
+#ifdef RSEQ_TEMPLATE_CPU_ID
+# define RSEQ_TEMPLATE_CPU_ID_OFFSET RSEQ_CPU_ID_OFFSET
+# define RSEQ_TEMPLATE_CPU_ID_FIELD cpu_id
+# ifdef RSEQ_TEMPLATE_MO_RELEASE
+# define RSEQ_TEMPLATE_SUFFIX _release_cpu_id
+# elif defined (RSEQ_TEMPLATE_MO_RELAXED)
+# define RSEQ_TEMPLATE_SUFFIX _relaxed_cpu_id
+# else
+# error "Never use <rseq-bits-template.h> directly; include <rseq.h> instead."
+# endif
+#elif defined(RSEQ_TEMPLATE_MM_CID)
+# define RSEQ_TEMPLATE_CPU_ID_OFFSET RSEQ_MM_CID_OFFSET
+# define RSEQ_TEMPLATE_CPU_ID_FIELD mm_cid
+# ifdef RSEQ_TEMPLATE_MO_RELEASE
+# define RSEQ_TEMPLATE_SUFFIX _release_mm_cid
+# elif defined (RSEQ_TEMPLATE_MO_RELAXED)
+# define RSEQ_TEMPLATE_SUFFIX _relaxed_mm_cid
+# else
+# error "Never use <rseq-bits-template.h> directly; include <rseq.h> instead."
+# endif
+#elif defined (RSEQ_TEMPLATE_CPU_ID_NONE)
+# ifdef RSEQ_TEMPLATE_MO_RELEASE
+# define RSEQ_TEMPLATE_SUFFIX _release
+# elif defined (RSEQ_TEMPLATE_MO_RELAXED)
+# define RSEQ_TEMPLATE_SUFFIX _relaxed
+# else
+# error "Never use <rseq-bits-template.h> directly; include <rseq.h> instead."
+# endif
+#else
+# error "Never use <rseq-bits-template.h> directly; include <rseq.h> instead."
+#endif
+
+#define RSEQ_TEMPLATE_IDENTIFIER(x) RSEQ_COMBINE_TOKENS(x, RSEQ_TEMPLATE_SUFFIX)
+
diff --git a/tools/testing/selftests/rseq/rseq-mips-bits.h b/tools/testing/selftests/rseq/rseq-mips-bits.h
new file mode 100644
index 000000000000..6c48af4d0944
--- /dev/null
+++ b/tools/testing/selftests/rseq/rseq-mips-bits.h
@@ -0,0 +1,462 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * Author: Paul Burton <paul.burton@mips.com>
+ * (C) Copyright 2018 MIPS Tech LLC
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
+#include "rseq-bits-template.h"
+
+#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_L " $4, %[v]\n\t"
+ "bne $4, %[expect], %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ LONG_L " $4, %[v]\n\t"
+ "bne $4, %[expect], %l[error2]\n\t"
+#endif
+ /* final store */
+ LONG_S " %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "$4", "memory"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
+ long voffp, intptr_t *load, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_L " $4, %[v]\n\t"
+ "beq $4, %[expectnot], %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ LONG_L " $4, %[v]\n\t"
+ "beq $4, %[expectnot], %l[error2]\n\t"
+#endif
+ LONG_S " $4, %[load]\n\t"
+ LONG_ADDI " $4, %[voffp]\n\t"
+ LONG_L " $4, 0($4)\n\t"
+ /* final store */
+ LONG_S " $4, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [expectnot] "r" (expectnot),
+ [voffp] "Ir" (voffp),
+ [load] "m" (*load)
+ RSEQ_INJECT_INPUT
+ : "$4", "memory"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+#endif
+ LONG_L " $4, %[v]\n\t"
+ LONG_ADDI " $4, %[count]\n\t"
+ /* final store */
+ LONG_S " $4, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(4)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [count] "Ir" (count)
+ RSEQ_INJECT_INPUT
+ : "$4", "memory"
+ RSEQ_INJECT_CLOBBER
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t expect2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_L " $4, %[v]\n\t"
+ "bne $4, %[expect], %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+ LONG_L " $4, %[v2]\n\t"
+ "bne $4, %[expect2], %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ LONG_L " $4, %[v]\n\t"
+ "bne $4, %[expect], %l[error2]\n\t"
+ LONG_L " $4, %[v2]\n\t"
+ "bne $4, %[expect2], %l[error3]\n\t"
+#endif
+ /* final store */
+ LONG_S " %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* cmp2 input */
+ [v2] "m" (*v2),
+ [expect2] "r" (expect2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "$4", "memory"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2, error3
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("1st expected value comparison failed");
+error3:
+ rseq_bug("2nd expected value comparison failed");
+#endif
+}
+
+#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t newv2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_L " $4, %[v]\n\t"
+ "bne $4, %[expect], %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ LONG_L " $4, %[v]\n\t"
+ "bne $4, %[expect], %l[error2]\n\t"
+#endif
+ /* try store */
+ LONG_S " %[newv2], %[v2]\n\t"
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ "sync\n\t" /* full sync provides store-release */
+#endif
+ /* final store */
+ LONG_S " %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ "b 5f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
+ "5:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* try store input */
+ [v2] "m" (*v2),
+ [newv2] "r" (newv2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "$4", "memory"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
+ void *dst, void *src, size_t len,
+ intptr_t newv, int cpu)
+{
+ uintptr_t rseq_scratch[3];
+
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ LONG_S " %[src], %[rseq_scratch0]\n\t"
+ LONG_S " %[dst], %[rseq_scratch1]\n\t"
+ LONG_S " %[len], %[rseq_scratch2]\n\t"
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_L " $4, %[v]\n\t"
+ "bne $4, %[expect], 5f\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 6f)
+ LONG_L " $4, %[v]\n\t"
+ "bne $4, %[expect], 7f\n\t"
+#endif
+ /* try memcpy */
+ "beqz %[len], 333f\n\t" \
+ "222:\n\t" \
+ "lb $4, 0(%[src])\n\t" \
+ "sb $4, 0(%[dst])\n\t" \
+ LONG_ADDI " %[src], 1\n\t" \
+ LONG_ADDI " %[dst], 1\n\t" \
+ LONG_ADDI " %[len], -1\n\t" \
+ "bnez %[len], 222b\n\t" \
+ "333:\n\t" \
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ "sync\n\t" /* full sync provides store-release */
+#endif
+ /* final store */
+ LONG_S " %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ /* teardown */
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t"
+ "b 8f\n\t"
+ RSEQ_ASM_DEFINE_ABORT(3, 4,
+ /* teardown */
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t",
+ abort, 1b, 2b, 4f)
+ RSEQ_ASM_DEFINE_CMPFAIL(5,
+ /* teardown */
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t",
+ cmpfail)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_CMPFAIL(6,
+ /* teardown */
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t",
+ error1)
+ RSEQ_ASM_DEFINE_CMPFAIL(7,
+ /* teardown */
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t",
+ error2)
+#endif
+ "8:\n\t"
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv),
+ /* try memcpy input */
+ [dst] "r" (dst),
+ [src] "r" (src),
+ [len] "r" (len),
+ [rseq_scratch0] "m" (rseq_scratch[0]),
+ [rseq_scratch1] "m" (rseq_scratch[1]),
+ [rseq_scratch2] "m" (rseq_scratch[2])
+ RSEQ_INJECT_INPUT
+ : "$4", "memory"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#include "rseq-bits-reset.h"
diff --git a/tools/testing/selftests/rseq/rseq-mips.h b/tools/testing/selftests/rseq/rseq-mips.h
index 878739fae2fd..50b950cf9585 100644
--- a/tools/testing/selftests/rseq/rseq-mips.h
+++ b/tools/testing/selftests/rseq/rseq-mips.h
@@ -2,9 +2,7 @@
/*
* Author: Paul Burton <paul.burton@mips.com>
* (C) Copyright 2018 MIPS Tech LLC
- *
- * Based on rseq-arm.h:
- * (C) Copyright 2016-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
/*
@@ -60,10 +58,6 @@ do { \
RSEQ_WRITE_ONCE(*p, v); \
} while (0)
-#ifdef RSEQ_SKIP_FASTPATH
-#include "rseq-skip.h"
-#else /* !RSEQ_SKIP_FASTPATH */
-
#if _MIPS_SZLONG == 64
# define LONG ".dword"
# define LONG_LA "dla"
@@ -154,624 +148,34 @@ do { \
teardown \
"b %l[" __rseq_str(cmpfail_label) "]\n\t"
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], %l[error2]\n\t"
-#endif
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "$4", "memory"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
- long voffp, intptr_t *load, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_L " $4, %[v]\n\t"
- "beq $4, %[expectnot], %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- LONG_L " $4, %[v]\n\t"
- "beq $4, %[expectnot], %l[error2]\n\t"
-#endif
- LONG_S " $4, %[load]\n\t"
- LONG_ADDI " $4, %[voffp]\n\t"
- LONG_L " $4, 0($4)\n\t"
- /* final store */
- LONG_S " $4, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expectnot] "r" (expectnot),
- [voffp] "Ir" (voffp),
- [load] "m" (*load)
- RSEQ_INJECT_INPUT
- : "$4", "memory"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
+/* Per-cpu-id indexing. */
-static inline __attribute__((always_inline))
-int rseq_addv(intptr_t *v, intptr_t count, int cpu)
-{
- RSEQ_INJECT_C(9)
+#define RSEQ_TEMPLATE_CPU_ID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-mips-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
-#endif
- LONG_L " $4, %[v]\n\t"
- LONG_ADDI " $4, %[count]\n\t"
- /* final store */
- LONG_S " $4, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(4)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [count] "Ir" (count)
- RSEQ_INJECT_INPUT
- : "$4", "memory"
- RSEQ_INJECT_CLOBBER
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-mips-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_CPU_ID
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
+/* Per-mm-cid indexing. */
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], %l[error2]\n\t"
-#endif
- /* try store */
- LONG_S " %[newv2], %[v2]\n\t"
- RSEQ_INJECT_ASM(5)
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "r" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "$4", "memory"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_MM_CID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-mips-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-mips-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_MM_CID
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], %l[error2]\n\t"
-#endif
- /* try store */
- LONG_S " %[newv2], %[v2]\n\t"
- RSEQ_INJECT_ASM(5)
- "sync\n\t" /* full sync provides store-release */
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "r" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "$4", "memory"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t expect2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
- LONG_L " $4, %[v2]\n\t"
- "bne $4, %[expect2], %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(5)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], %l[error2]\n\t"
- LONG_L " $4, %[v2]\n\t"
- "bne $4, %[expect2], %l[error3]\n\t"
-#endif
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- "b 5f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4, "", abort, 1b, 2b, 4f)
- "5:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* cmp2 input */
- [v2] "m" (*v2),
- [expect2] "r" (expect2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "$4", "memory"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2, error3
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("1st expected value comparison failed");
-error3:
- rseq_bug("2nd expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- uintptr_t rseq_scratch[3];
-
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- LONG_S " %[src], %[rseq_scratch0]\n\t"
- LONG_S " %[dst], %[rseq_scratch1]\n\t"
- LONG_S " %[len], %[rseq_scratch2]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], 5f\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 6f)
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], 7f\n\t"
-#endif
- /* try memcpy */
- "beqz %[len], 333f\n\t" \
- "222:\n\t" \
- "lb $4, 0(%[src])\n\t" \
- "sb $4, 0(%[dst])\n\t" \
- LONG_ADDI " %[src], 1\n\t" \
- LONG_ADDI " %[dst], 1\n\t" \
- LONG_ADDI " %[len], -1\n\t" \
- "bnez %[len], 222b\n\t" \
- "333:\n\t" \
- RSEQ_INJECT_ASM(5)
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t"
- "b 8f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4,
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- abort, 1b, 2b, 4f)
- RSEQ_ASM_DEFINE_CMPFAIL(5,
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- cmpfail)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_CMPFAIL(6,
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- error1)
- RSEQ_ASM_DEFINE_CMPFAIL(7,
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- error2)
-#endif
- "8:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len),
- [rseq_scratch0] "m" (rseq_scratch[0]),
- [rseq_scratch1] "m" (rseq_scratch[1]),
- [rseq_scratch2] "m" (rseq_scratch[2])
- RSEQ_INJECT_INPUT
- : "$4", "memory"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- uintptr_t rseq_scratch[3];
-
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(9, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- LONG_S " %[src], %[rseq_scratch0]\n\t"
- LONG_S " %[dst], %[rseq_scratch1]\n\t"
- LONG_S " %[len], %[rseq_scratch2]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3f, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], 5f\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 6f)
- LONG_L " $4, %[v]\n\t"
- "bne $4, %[expect], 7f\n\t"
-#endif
- /* try memcpy */
- "beqz %[len], 333f\n\t" \
- "222:\n\t" \
- "lb $4, 0(%[src])\n\t" \
- "sb $4, 0(%[dst])\n\t" \
- LONG_ADDI " %[src], 1\n\t" \
- LONG_ADDI " %[dst], 1\n\t" \
- LONG_ADDI " %[len], -1\n\t" \
- "bnez %[len], 222b\n\t" \
- "333:\n\t" \
- RSEQ_INJECT_ASM(5)
- "sync\n\t" /* full sync provides store-release */
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t"
- "b 8f\n\t"
- RSEQ_ASM_DEFINE_ABORT(3, 4,
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- abort, 1b, 2b, 4f)
- RSEQ_ASM_DEFINE_CMPFAIL(5,
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- cmpfail)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_CMPFAIL(6,
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- error1)
- RSEQ_ASM_DEFINE_CMPFAIL(7,
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- error2)
-#endif
- "8:\n\t"
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len),
- [rseq_scratch0] "m" (rseq_scratch[0]),
- [rseq_scratch1] "m" (rseq_scratch[1]),
- [rseq_scratch2] "m" (rseq_scratch[2])
- RSEQ_INJECT_INPUT
- : "$4", "memory"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
+/* APIs which are not based on cpu ids. */
-#endif /* !RSEQ_SKIP_FASTPATH */
+#define RSEQ_TEMPLATE_CPU_ID_NONE
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-mips-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+#undef RSEQ_TEMPLATE_CPU_ID_NONE
diff --git a/tools/testing/selftests/rseq/rseq-ppc-bits.h b/tools/testing/selftests/rseq/rseq-ppc-bits.h
new file mode 100644
index 000000000000..98e69eae1e62
--- /dev/null
+++ b/tools/testing/selftests/rseq/rseq-ppc-bits.h
@@ -0,0 +1,454 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * rseq-ppc-bits.h
+ *
+ * (C) Copyright 2016-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * (C) Copyright 2016-2018 - Boqun Feng <boqun.feng@gmail.com>
+ */
+
+#include "rseq-bits-template.h"
+
+#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ /* cmp @v equal to @expect */
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ /* cmp @v equal to @expect */
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
+#endif
+ /* final store */
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r17"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
+ long voffp, intptr_t *load, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ /* cmp @v not equal to @expectnot */
+ RSEQ_ASM_OP_CMPNE(v, expectnot, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ /* cmp @v not equal to @expectnot */
+ RSEQ_ASM_OP_CMPNE(v, expectnot, %l[error2])
+#endif
+ /* load the value of @v */
+ RSEQ_ASM_OP_R_LOAD(v)
+ /* store it in @load */
+ RSEQ_ASM_OP_R_STORE(load)
+ /* dereference voffp(v) */
+ RSEQ_ASM_OP_R_LOADX(voffp)
+ /* final store the value at voffp(v) */
+ RSEQ_ASM_OP_R_FINAL_STORE(v, 2)
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [expectnot] "r" (expectnot),
+ [voffp] "b" (voffp),
+ [load] "m" (*load)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r17"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+#endif
+ /* load the value of @v */
+ RSEQ_ASM_OP_R_LOAD(v)
+ /* add @count to it */
+ RSEQ_ASM_OP_R_ADD(count)
+ /* final store */
+ RSEQ_ASM_OP_R_FINAL_STORE(v, 2)
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [count] "r" (count)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r17"
+ RSEQ_INJECT_CLOBBER
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t expect2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ /* cmp @v equal to @expect */
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+ /* cmp @v2 equal to @expct2 */
+ RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[cmpfail])
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_COMPARE_TWICE
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ /* cmp @v equal to @expect */
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
+ /* cmp @v2 equal to @expct2 */
+ RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[error3])
+#endif
+ /* final store */
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* cmp2 input */
+ [v2] "m" (*v2),
+ [expect2] "r" (expect2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r17"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2, error3
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("1st expected value comparison failed");
+error3:
+ rseq_after_asm_goto();
+ rseq_bug("2nd expected value comparison failed");
+#endif
+}
+
+#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t newv2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ /* cmp @v equal to @expect */
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ /* cmp @v equal to @expect */
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
+#endif
+ /* try store */
+ RSEQ_ASM_OP_STORE(newv2, v2)
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ /* for 'release' */
+ "lwsync\n\t"
+#endif
+ /* final store */
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* try store input */
+ [v2] "m" (*v2),
+ [newv2] "r" (newv2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r17"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
+ void *dst, void *src, size_t len,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* setup for mempcy */
+ "mr %%r19, %[len]\n\t"
+ "mr %%r20, %[src]\n\t"
+ "mr %%r21, %[dst]\n\t"
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ /* cmp @v equal to @expect */
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ /* cmp cpuid */
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ /* cmp @v equal to @expect */
+ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
+#endif
+ /* try memcpy */
+ RSEQ_ASM_OP_R_MEMCPY()
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ /* for 'release' */
+ "lwsync\n\t"
+#endif
+ /* final store */
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
+ RSEQ_INJECT_ASM(6)
+ /* teardown */
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv),
+ /* try memcpy input */
+ [dst] "r" (dst),
+ [src] "r" (src),
+ [len] "r" (len)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r17", "r18", "r19", "r20", "r21"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#include "rseq-bits-reset.h"
diff --git a/tools/testing/selftests/rseq/rseq-ppc.h b/tools/testing/selftests/rseq/rseq-ppc.h
index bab8e0b9fb11..dc9190facee9 100644
--- a/tools/testing/selftests/rseq/rseq-ppc.h
+++ b/tools/testing/selftests/rseq/rseq-ppc.h
@@ -2,7 +2,7 @@
/*
* rseq-ppc.h
*
- * (C) Copyright 2016-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
* (C) Copyright 2016-2018 - Boqun Feng <boqun.feng@gmail.com>
*/
@@ -36,10 +36,6 @@ do { \
RSEQ_WRITE_ONCE(*p, v); \
} while (0)
-#ifdef RSEQ_SKIP_FASTPATH
-#include "rseq-skip.h"
-#else /* !RSEQ_SKIP_FASTPATH */
-
/*
* The __rseq_cs_ptr_array and __rseq_cs sections can be used by debuggers to
* better handle single-stepping through the restartable critical sections.
@@ -209,583 +205,34 @@ do { \
RSEQ_STORE_LONG(var) "%[" __rseq_str(value) "], %[" __rseq_str(var) "]\n\t" \
__rseq_str(post_commit_label) ":\n\t"
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- /* final store */
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r17"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
- long voffp, intptr_t *load, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- /* cmp @v not equal to @expectnot */
- RSEQ_ASM_OP_CMPNE(v, expectnot, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- /* cmp @v not equal to @expectnot */
- RSEQ_ASM_OP_CMPNE(v, expectnot, %l[error2])
-#endif
- /* load the value of @v */
- RSEQ_ASM_OP_R_LOAD(v)
- /* store it in @load */
- RSEQ_ASM_OP_R_STORE(load)
- /* dereference voffp(v) */
- RSEQ_ASM_OP_R_LOADX(voffp)
- /* final store the value at voffp(v) */
- RSEQ_ASM_OP_R_FINAL_STORE(v, 2)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expectnot] "r" (expectnot),
- [voffp] "b" (voffp),
- [load] "m" (*load)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r17"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_addv(intptr_t *v, intptr_t count, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
-#endif
- /* load the value of @v */
- RSEQ_ASM_OP_R_LOAD(v)
- /* add @count to it */
- RSEQ_ASM_OP_R_ADD(count)
- /* final store */
- RSEQ_ASM_OP_R_FINAL_STORE(v, 2)
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [count] "r" (count)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r17"
- RSEQ_INJECT_CLOBBER
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- /* try store */
- RSEQ_ASM_OP_STORE(newv2, v2)
- RSEQ_INJECT_ASM(5)
- /* final store */
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "r" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r17"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- /* try store */
- RSEQ_ASM_OP_STORE(newv2, v2)
- RSEQ_INJECT_ASM(5)
- /* for 'release' */
- "lwsync\n\t"
- /* final store */
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "r" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r17"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t expect2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
- /* cmp @v2 equal to @expct2 */
- RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[cmpfail])
- RSEQ_INJECT_ASM(5)
-#ifdef RSEQ_COMPARE_TWICE
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
- /* cmp @v2 equal to @expct2 */
- RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[error3])
-#endif
- /* final store */
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* cmp2 input */
- [v2] "m" (*v2),
- [expect2] "r" (expect2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r17"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2, error3
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("1st expected value comparison failed");
-error3:
- rseq_after_asm_goto();
- rseq_bug("2nd expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* setup for mempcy */
- "mr %%r19, %[len]\n\t"
- "mr %%r20, %[src]\n\t"
- "mr %%r21, %[dst]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- /* try memcpy */
- RSEQ_ASM_OP_R_MEMCPY()
- RSEQ_INJECT_ASM(5)
- /* final store */
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
- RSEQ_INJECT_ASM(6)
- /* teardown */
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r17", "r18", "r19", "r20", "r21"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* setup for mempcy */
- "mr %%r19, %[len]\n\t"
- "mr %%r20, %[src]\n\t"
- "mr %%r21, %[dst]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- /* cmp cpuid */
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- /* cmp @v equal to @expect */
- RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
-#endif
- /* try memcpy */
- RSEQ_ASM_OP_R_MEMCPY()
- RSEQ_INJECT_ASM(5)
- /* for 'release' */
- "lwsync\n\t"
- /* final store */
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
- RSEQ_INJECT_ASM(6)
- /* teardown */
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r17", "r18", "r19", "r20", "r21"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-#endif /* !RSEQ_SKIP_FASTPATH */
+/* Per-cpu-id indexing. */
+
+#define RSEQ_TEMPLATE_CPU_ID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-ppc-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-ppc-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_CPU_ID
+
+/* Per-mm-cid indexing. */
+
+#define RSEQ_TEMPLATE_MM_CID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-ppc-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-ppc-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_MM_CID
+
+/* APIs which are not based on cpu ids. */
+
+#define RSEQ_TEMPLATE_CPU_ID_NONE
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-ppc-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+#undef RSEQ_TEMPLATE_CPU_ID_NONE
diff --git a/tools/testing/selftests/rseq/rseq-riscv-bits.h b/tools/testing/selftests/rseq/rseq-riscv-bits.h
new file mode 100644
index 000000000000..de31a0143139
--- /dev/null
+++ b/tools/testing/selftests/rseq/rseq-riscv-bits.h
@@ -0,0 +1,410 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+
+#include "rseq-bits-template.h"
+
+#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __always_inline
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
+ RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
+#endif
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG_1
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __always_inline
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
+ off_t voffp, intptr_t *load, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPNE(v, expectnot, "%l[cmpfail]")
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
+ RSEQ_ASM_OP_CMPNE(v, expectnot, "%l[error2]")
+#endif
+ RSEQ_ASM_OP_R_LOAD(v)
+ RSEQ_ASM_OP_R_STORE(load)
+ RSEQ_ASM_OP_R_LOAD_OFF(voffp)
+ RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [expectnot] "r" (expectnot),
+ [load] "m" (*load),
+ [voffp] "r" (voffp)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG_1
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __always_inline
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
+#endif
+ RSEQ_ASM_OP_R_LOAD(v)
+ RSEQ_ASM_OP_R_ADD(count)
+ RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [count] "r" (count)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG_1
+ RSEQ_INJECT_CLOBBER
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+static inline __always_inline
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t expect2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error3]")
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_OP_CMPEQ(v2, expect2, "%l[cmpfail]")
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
+ RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
+ RSEQ_ASM_OP_CMPEQ(v2, expect2, "%l[error3]")
+#endif
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [v2] "m" (*v2),
+ [expect2] "r" (expect2),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG_1
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2, error3
+#endif
+ );
+
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("expected value comparison failed");
+error3:
+ rseq_bug("2nd expected value comparison failed");
+#endif
+}
+
+#define RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV
+
+/*
+ * pval = *(ptr+off)
+ * *pval += inc;
+ */
+static inline __always_inline
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_offset_deref_addv)(intptr_t *ptr, off_t off, intptr_t inc, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
+#endif
+ RSEQ_ASM_OP_R_DEREF_ADDV(ptr, off, 3)
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [ptr] "r" (ptr),
+ [off] "er" (off),
+ [inc] "er" (inc)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG_1
+ RSEQ_INJECT_CLOBBER
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __always_inline
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t newv2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
+ RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
+#endif
+ RSEQ_ASM_OP_STORE(newv2, v2)
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 3)
+#else
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
+#endif
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [expect] "r" (expect),
+ [v] "m" (*v),
+ [newv] "r" (newv),
+ [v2] "m" (*v2),
+ [newv2] "r" (newv2)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG_1
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __always_inline
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
+ void *dst, void *src, size_t len,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+ __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
+ RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
+#endif
+ RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
+ RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
+#endif
+ RSEQ_ASM_OP_R_BAD_MEMCPY(dst, src, len)
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 3)
+#else
+ RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
+#endif
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [expect] "r" (expect),
+ [v] "m" (*v),
+ [newv] "r" (newv),
+ [dst] "r" (dst),
+ [src] "r" (src),
+ [len] "r" (len)
+ RSEQ_INJECT_INPUT
+ : "memory", RSEQ_ASM_TMP_REG_1, RSEQ_ASM_TMP_REG_2,
+ RSEQ_ASM_TMP_REG_3, RSEQ_ASM_TMP_REG_4
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#include "rseq-bits-reset.h"
diff --git a/tools/testing/selftests/rseq/rseq-riscv.h b/tools/testing/selftests/rseq/rseq-riscv.h
index 3a391c9bf468..17932a79e066 100644
--- a/tools/testing/selftests/rseq/rseq-riscv.h
+++ b/tools/testing/selftests/rseq/rseq-riscv.h
@@ -49,10 +49,6 @@ do { \
RSEQ_WRITE_ONCE(*(p), v); \
} while (0)
-#ifdef RSEQ_SKIP_FASTPATH
-#include "rseq-skip.h"
-#else /* !RSEQ_SKIP_FASTPATH */
-
#define __RSEQ_ASM_DEFINE_TABLE(label, version, flags, start_ip, \
post_commit_offset, abort_ip) \
".pushsection __rseq_cs, \"aw\"\n" \
@@ -169,509 +165,34 @@ do { \
RSEQ_ASM_OP_R_ADD(inc) \
__rseq_str(post_commit_label) ":\n"
-static inline __always_inline
-int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
+/* Per-cpu-id indexing. */
- __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
-#endif
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG_1
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
-
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __always_inline
-int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
- off_t voffp, intptr_t *load, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPNE(v, expectnot, "%l[cmpfail]")
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
- RSEQ_ASM_OP_CMPNE(v, expectnot, "%l[error2]")
-#endif
- RSEQ_ASM_OP_R_LOAD(v)
- RSEQ_ASM_OP_R_STORE(load)
- RSEQ_ASM_OP_R_LOAD_OFF(voffp)
- RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [expectnot] "r" (expectnot),
- [load] "m" (*load),
- [voffp] "r" (voffp)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG_1
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_CPU_ID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-riscv-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
-static inline __always_inline
-int rseq_addv(intptr_t *v, intptr_t count, int cpu)
-{
- RSEQ_INJECT_C(9)
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-riscv-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_CPU_ID
- __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
-#endif
- RSEQ_ASM_OP_R_LOAD(v)
- RSEQ_ASM_OP_R_ADD(count)
- RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [count] "r" (count)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG_1
- RSEQ_INJECT_CLOBBER
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-#endif
-}
-
-static inline __always_inline
-int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
-#endif
- RSEQ_ASM_OP_STORE(newv2, v2)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [expect] "r" (expect),
- [v] "m" (*v),
- [newv] "r" (newv),
- [v2] "m" (*v2),
- [newv2] "r" (newv2)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG_1
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
-
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __always_inline
-int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
-#endif
- RSEQ_ASM_OP_STORE(newv2, v2)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [expect] "r" (expect),
- [v] "m" (*v),
- [newv] "r" (newv),
- [v2] "m" (*v2),
- [newv2] "r" (newv2)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG_1
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
-
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __always_inline
-int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t expect2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error3]")
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_OP_CMPEQ(v2, expect2, "%l[cmpfail]")
- RSEQ_INJECT_ASM(5)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
- RSEQ_ASM_OP_CMPEQ(v2, expect2, "%l[error3]")
-#endif
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [expect] "r" (expect),
- [v2] "m" (*v2),
- [expect2] "r" (expect2),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG_1
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2, error3
-#endif
- );
-
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-error3:
- rseq_bug("2nd expected value comparison failed");
-#endif
-}
-
-static inline __always_inline
-int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
- __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
-#endif
- RSEQ_ASM_OP_R_BAD_MEMCPY(dst, src, len)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_OP_FINAL_STORE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [expect] "r" (expect),
- [v] "m" (*v),
- [newv] "r" (newv),
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG_1, RSEQ_ASM_TMP_REG_2,
- RSEQ_ASM_TMP_REG_3, RSEQ_ASM_TMP_REG_4
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
-
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __always_inline
-int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
- RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
-#endif
- RSEQ_ASM_OP_R_BAD_MEMCPY(dst, src, len)
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 3)
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [expect] "r" (expect),
- [v] "m" (*v),
- [newv] "r" (newv),
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG_1, RSEQ_ASM_TMP_REG_2,
- RSEQ_ASM_TMP_REG_3, RSEQ_ASM_TMP_REG_4
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
-
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_bug("expected value comparison failed");
-#endif
-}
+/* Per-mm-cid indexing. */
-#define RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV
+#define RSEQ_TEMPLATE_MM_CID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-riscv-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
-/*
- * pval = *(ptr+off)
- * *pval += inc;
- */
-static inline __always_inline
-int rseq_offset_deref_addv(intptr_t *ptr, off_t off, intptr_t inc, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
-#endif
- RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
-#endif
- RSEQ_ASM_OP_R_DEREF_ADDV(ptr, off, 3)
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_DEFINE_ABORT(4, abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [ptr] "r" (ptr),
- [off] "er" (off),
- [inc] "er" (inc)
- RSEQ_INJECT_INPUT
- : "memory", RSEQ_ASM_TMP_REG_1
- RSEQ_INJECT_CLOBBER
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-riscv-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_MM_CID
+
+/* APIs which are not based on cpu ids. */
-#endif /* !RSEQ_SKIP_FASTPATH */
+#define RSEQ_TEMPLATE_CPU_ID_NONE
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-riscv-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+#undef RSEQ_TEMPLATE_CPU_ID_NONE
diff --git a/tools/testing/selftests/rseq/rseq-s390-bits.h b/tools/testing/selftests/rseq/rseq-s390-bits.h
new file mode 100644
index 000000000000..0cf17d9f170a
--- /dev/null
+++ b/tools/testing/selftests/rseq/rseq-s390-bits.h
@@ -0,0 +1,474 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+
+#include "rseq-bits-template.h"
+
+#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_CMP " %[expect], %[v]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ LONG_CMP " %[expect], %[v]\n\t"
+ "jnz %l[error2]\n\t"
+#endif
+ /* final store */
+ LONG_S " %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r0"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+/*
+ * Compare @v against @expectnot. When it does _not_ match, load @v
+ * into @load, and store the content of *@v + voffp into @v.
+ */
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
+ long voffp, intptr_t *load, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_L " %%r1, %[v]\n\t"
+ LONG_CMP_R " %%r1, %[expectnot]\n\t"
+ "je %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ LONG_L " %%r1, %[v]\n\t"
+ LONG_CMP_R " %%r1, %[expectnot]\n\t"
+ "je %l[error2]\n\t"
+#endif
+ LONG_S " %%r1, %[load]\n\t"
+ LONG_ADD_R " %%r1, %[voffp]\n\t"
+ LONG_L " %%r1, 0(%%r1)\n\t"
+ /* final store */
+ LONG_S " %%r1, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [expectnot] "r" (expectnot),
+ [voffp] "r" (voffp),
+ [load] "m" (*load)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r0", "r1"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+#endif
+ LONG_L " %%r0, %[v]\n\t"
+ LONG_ADD_R " %%r0, %[count]\n\t"
+ /* final store */
+ LONG_S " %%r0, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [count] "r" (count)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r0"
+ RSEQ_INJECT_CLOBBER
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t expect2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_CMP " %[expect], %[v]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+ LONG_CMP " %[expect2], %[v2]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ LONG_CMP " %[expect], %[v]\n\t"
+ "jnz %l[error2]\n\t"
+ LONG_CMP " %[expect2], %[v2]\n\t"
+ "jnz %l[error3]\n\t"
+#endif
+ /* final store */
+ LONG_S " %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* cmp2 input */
+ [v2] "m" (*v2),
+ [expect2] "r" (expect2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r0"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2, error3
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("1st expected value comparison failed");
+error3:
+ rseq_after_asm_goto();
+ rseq_bug("2nd expected value comparison failed");
+#endif
+}
+
+#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+/* s390 is TSO. */
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t newv2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_CMP " %[expect], %[v]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
+ LONG_CMP " %[expect], %[v]\n\t"
+ "jnz %l[error2]\n\t"
+#endif
+ /* try store */
+ LONG_S " %[newv2], %[v2]\n\t"
+ RSEQ_INJECT_ASM(5)
+ /* final store */
+ LONG_S " %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* try store input */
+ [v2] "m" (*v2),
+ [newv2] "r" (newv2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r0"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+/* s390 is TSO. */
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
+ void *dst, void *src, size_t len,
+ intptr_t newv, int cpu)
+{
+ uint64_t rseq_scratch[3];
+
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ LONG_S " %[src], %[rseq_scratch0]\n\t"
+ LONG_S " %[dst], %[rseq_scratch1]\n\t"
+ LONG_S " %[len], %[rseq_scratch2]\n\t"
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
+ RSEQ_INJECT_ASM(3)
+ LONG_CMP " %[expect], %[v]\n\t"
+ "jnz 5f\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 6f)
+ LONG_CMP " %[expect], %[v]\n\t"
+ "jnz 7f\n\t"
+#endif
+ /* try memcpy */
+ LONG_LT_R " %[len], %[len]\n\t"
+ "jz 333f\n\t"
+ "222:\n\t"
+ "ic %%r0,0(%[src])\n\t"
+ "stc %%r0,0(%[dst])\n\t"
+ LONG_ADDI " %[src], 1\n\t"
+ LONG_ADDI " %[dst], 1\n\t"
+ LONG_ADDI " %[len], -1\n\t"
+ "jnz 222b\n\t"
+ "333:\n\t"
+ RSEQ_INJECT_ASM(5)
+ /* final store */
+ LONG_S " %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ /* teardown */
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t"
+ RSEQ_ASM_DEFINE_ABORT(4,
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t",
+ abort)
+ RSEQ_ASM_DEFINE_CMPFAIL(5,
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t",
+ cmpfail)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_CMPFAIL(6,
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t",
+ error1)
+ RSEQ_ASM_DEFINE_CMPFAIL(7,
+ LONG_L " %[len], %[rseq_scratch2]\n\t"
+ LONG_L " %[dst], %[rseq_scratch1]\n\t"
+ LONG_L " %[src], %[rseq_scratch0]\n\t",
+ error2)
+#endif
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
+ [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv),
+ /* try memcpy input */
+ [dst] "r" (dst),
+ [src] "r" (src),
+ [len] "r" (len),
+ [rseq_scratch0] "m" (rseq_scratch[0]),
+ [rseq_scratch1] "m" (rseq_scratch[1]),
+ [rseq_scratch2] "m" (rseq_scratch[2])
+ RSEQ_INJECT_INPUT
+ : "memory", "cc", "r0"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#include "rseq-bits-reset.h"
diff --git a/tools/testing/selftests/rseq/rseq-s390.h b/tools/testing/selftests/rseq/rseq-s390.h
index 4e6dc5f0cb42..46c92598acc7 100644
--- a/tools/testing/selftests/rseq/rseq-s390.h
+++ b/tools/testing/selftests/rseq/rseq-s390.h
@@ -28,10 +28,6 @@ do { \
RSEQ_WRITE_ONCE(*p, v); \
} while (0)
-#ifdef RSEQ_SKIP_FASTPATH
-#include "rseq-skip.h"
-#else /* !RSEQ_SKIP_FASTPATH */
-
#ifdef __s390x__
#define LONG_L "lg"
@@ -134,477 +130,34 @@ do { \
"jg %l[" __rseq_str(cmpfail_label) "]\n\t" \
".popsection\n\t"
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
+/* Per-cpu-id indexing. */
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_CMP " %[expect], %[v]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- LONG_CMP " %[expect], %[v]\n\t"
- "jnz %l[error2]\n\t"
-#endif
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r0"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_CPU_ID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-s390-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
-/*
- * Compare @v against @expectnot. When it does _not_ match, load @v
- * into @load, and store the content of *@v + voffp into @v.
- */
-static inline __attribute__((always_inline))
-int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
- long voffp, intptr_t *load, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_L " %%r1, %[v]\n\t"
- LONG_CMP_R " %%r1, %[expectnot]\n\t"
- "je %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- LONG_L " %%r1, %[v]\n\t"
- LONG_CMP_R " %%r1, %[expectnot]\n\t"
- "je %l[error2]\n\t"
-#endif
- LONG_S " %%r1, %[load]\n\t"
- LONG_ADD_R " %%r1, %[voffp]\n\t"
- LONG_L " %%r1, 0(%%r1)\n\t"
- /* final store */
- LONG_S " %%r1, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expectnot] "r" (expectnot),
- [voffp] "r" (voffp),
- [load] "m" (*load)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r0", "r1"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-s390-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_CPU_ID
-static inline __attribute__((always_inline))
-int rseq_addv(intptr_t *v, intptr_t count, int cpu)
-{
- RSEQ_INJECT_C(9)
+/* Per-mm-cid indexing. */
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
-#endif
- LONG_L " %%r0, %[v]\n\t"
- LONG_ADD_R " %%r0, %[count]\n\t"
- /* final store */
- LONG_S " %%r0, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [count] "r" (count)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r0"
- RSEQ_INJECT_CLOBBER
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_MM_CID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-s390-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-s390-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_MM_CID
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_CMP " %[expect], %[v]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- LONG_CMP " %[expect], %[v]\n\t"
- "jnz %l[error2]\n\t"
-#endif
- /* try store */
- LONG_S " %[newv2], %[v2]\n\t"
- RSEQ_INJECT_ASM(5)
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "r" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r0"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-/* s390 is TSO. */
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- return rseq_cmpeqv_trystorev_storev(v, expect, v2, newv2, newv, cpu);
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t expect2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_CMP " %[expect], %[v]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
- LONG_CMP " %[expect2], %[v2]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(5)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
- LONG_CMP " %[expect], %[v]\n\t"
- "jnz %l[error2]\n\t"
- LONG_CMP " %[expect2], %[v2]\n\t"
- "jnz %l[error3]\n\t"
-#endif
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* cmp2 input */
- [v2] "m" (*v2),
- [expect2] "r" (expect2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r0"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2, error3
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("1st expected value comparison failed");
-error3:
- rseq_after_asm_goto();
- rseq_bug("2nd expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- uint64_t rseq_scratch[3];
-
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- LONG_S " %[src], %[rseq_scratch0]\n\t"
- LONG_S " %[dst], %[rseq_scratch1]\n\t"
- LONG_S " %[len], %[rseq_scratch2]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
- RSEQ_INJECT_ASM(3)
- LONG_CMP " %[expect], %[v]\n\t"
- "jnz 5f\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 6f)
- LONG_CMP " %[expect], %[v]\n\t"
- "jnz 7f\n\t"
-#endif
- /* try memcpy */
- LONG_LT_R " %[len], %[len]\n\t"
- "jz 333f\n\t"
- "222:\n\t"
- "ic %%r0,0(%[src])\n\t"
- "stc %%r0,0(%[dst])\n\t"
- LONG_ADDI " %[src], 1\n\t"
- LONG_ADDI " %[dst], 1\n\t"
- LONG_ADDI " %[len], -1\n\t"
- "jnz 222b\n\t"
- "333:\n\t"
- RSEQ_INJECT_ASM(5)
- /* final store */
- LONG_S " %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- /* teardown */
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t"
- RSEQ_ASM_DEFINE_ABORT(4,
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- abort)
- RSEQ_ASM_DEFINE_CMPFAIL(5,
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- cmpfail)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_CMPFAIL(6,
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- error1)
- RSEQ_ASM_DEFINE_CMPFAIL(7,
- LONG_L " %[len], %[rseq_scratch2]\n\t"
- LONG_L " %[dst], %[rseq_scratch1]\n\t"
- LONG_L " %[src], %[rseq_scratch0]\n\t",
- error2)
-#endif
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [current_cpu_id] "m" (rseq_get_abi()->cpu_id),
- [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len),
- [rseq_scratch0] "m" (rseq_scratch[0]),
- [rseq_scratch1] "m" (rseq_scratch[1]),
- [rseq_scratch2] "m" (rseq_scratch[2])
- RSEQ_INJECT_INPUT
- : "memory", "cc", "r0"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
+/* APIs which are not based on cpu ids. */
-/* s390 is TSO. */
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- return rseq_cmpeqv_trymemcpy_storev(v, expect, dst, src, len,
- newv, cpu);
-}
-#endif /* !RSEQ_SKIP_FASTPATH */
+#define RSEQ_TEMPLATE_CPU_ID_NONE
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-s390-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+#undef RSEQ_TEMPLATE_CPU_ID_NONE
diff --git a/tools/testing/selftests/rseq/rseq-skip.h b/tools/testing/selftests/rseq/rseq-skip.h
deleted file mode 100644
index 7b53dac1fcdd..000000000000
--- a/tools/testing/selftests/rseq/rseq-skip.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
-/*
- * rseq-skip.h
- *
- * (C) Copyright 2017-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
-{
- return -1;
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
- long voffp, intptr_t *load, int cpu)
-{
- return -1;
-}
-
-static inline __attribute__((always_inline))
-int rseq_addv(intptr_t *v, intptr_t count, int cpu)
-{
- return -1;
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- return -1;
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- return -1;
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t expect2,
- intptr_t newv, int cpu)
-{
- return -1;
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- return -1;
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- return -1;
-}
diff --git a/tools/testing/selftests/rseq/rseq-x86-bits.h b/tools/testing/selftests/rseq/rseq-x86-bits.h
new file mode 100644
index 000000000000..8a9431eec467
--- /dev/null
+++ b/tools/testing/selftests/rseq/rseq-x86-bits.h
@@ -0,0 +1,993 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * rseq-x86-bits.h
+ *
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
+#include "rseq-bits-template.h"
+
+#ifdef __x86_64__
+
+#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "cmpq %[v], %[expect]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+ "cmpq %[v], %[expect]\n\t"
+ "jnz %l[error2]\n\t"
+#endif
+ /* final store */
+ "movq %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ : "memory", "cc", "rax"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+/*
+ * Compare @v against @expectnot. When it does _not_ match, load @v
+ * into @load, and store the content of *@v + voffp into @v.
+ */
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
+ long voffp, intptr_t *load, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "movq %[v], %%rbx\n\t"
+ "cmpq %%rbx, %[expectnot]\n\t"
+ "je %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+ "movq %[v], %%rbx\n\t"
+ "cmpq %%rbx, %[expectnot]\n\t"
+ "je %l[error2]\n\t"
+#endif
+ "movq %%rbx, %[load]\n\t"
+ "addq %[voffp], %%rbx\n\t"
+ "movq (%%rbx), %%rbx\n\t"
+ /* final store */
+ "movq %%rbx, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* final store input */
+ [v] "m" (*v),
+ [expectnot] "r" (expectnot),
+ [voffp] "er" (voffp),
+ [load] "m" (*load)
+ : "memory", "cc", "rax", "rbx"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+#endif
+ /* final store */
+ "addq %[count], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* final store input */
+ [v] "m" (*v),
+ [count] "er" (count)
+ : "memory", "cc", "rax"
+ RSEQ_INJECT_CLOBBER
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+#define RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV
+
+/*
+ * pval = *(ptr+off)
+ * *pval += inc;
+ */
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_offset_deref_addv)(intptr_t *ptr, long off, intptr_t inc, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+#endif
+ /* get p+v */
+ "movq %[ptr], %%rbx\n\t"
+ "addq %[off], %%rbx\n\t"
+ /* get pv */
+ "movq (%%rbx), %%rcx\n\t"
+ /* *pv += inc */
+ "addq %[inc], (%%rcx)\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* final store input */
+ [ptr] "m" (*ptr),
+ [off] "er" (off),
+ [inc] "er" (inc)
+ : "memory", "cc", "rax", "rbx", "rcx"
+ RSEQ_INJECT_CLOBBER
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ return 0;
+abort:
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t expect2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "cmpq %[v], %[expect]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+ "cmpq %[v2], %[expect2]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+ "cmpq %[v], %[expect]\n\t"
+ "jnz %l[error2]\n\t"
+ "cmpq %[v2], %[expect2]\n\t"
+ "jnz %l[error3]\n\t"
+#endif
+ /* final store */
+ "movq %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* cmp2 input */
+ [v2] "m" (*v2),
+ [expect2] "r" (expect2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ : "memory", "cc", "rax"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2, error3
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("1st expected value comparison failed");
+error3:
+ rseq_after_asm_goto();
+ rseq_bug("2nd expected value comparison failed");
+#endif
+}
+
+#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t newv2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "cmpq %[v], %[expect]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+ "cmpq %[v], %[expect]\n\t"
+ "jnz %l[error2]\n\t"
+#endif
+ /* try store */
+ "movq %[newv2], %[v2]\n\t"
+ RSEQ_INJECT_ASM(5)
+ /* final store */
+ "movq %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* try store input */
+ [v2] "m" (*v2),
+ [newv2] "r" (newv2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ : "memory", "cc", "rax"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
+ void *dst, void *src, size_t len,
+ intptr_t newv, int cpu)
+{
+ uint64_t rseq_scratch[3];
+
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ "movq %[src], %[rseq_scratch0]\n\t"
+ "movq %[dst], %[rseq_scratch1]\n\t"
+ "movq %[len], %[rseq_scratch2]\n\t"
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "cmpq %[v], %[expect]\n\t"
+ "jnz 5f\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 6f)
+ "cmpq %[v], %[expect]\n\t"
+ "jnz 7f\n\t"
+#endif
+ /* try memcpy */
+ "test %[len], %[len]\n\t" \
+ "jz 333f\n\t" \
+ "222:\n\t" \
+ "movb (%[src]), %%al\n\t" \
+ "movb %%al, (%[dst])\n\t" \
+ "inc %[src]\n\t" \
+ "inc %[dst]\n\t" \
+ "dec %[len]\n\t" \
+ "jnz 222b\n\t" \
+ "333:\n\t" \
+ RSEQ_INJECT_ASM(5)
+ /* final store */
+ "movq %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ /* teardown */
+ "movq %[rseq_scratch2], %[len]\n\t"
+ "movq %[rseq_scratch1], %[dst]\n\t"
+ "movq %[rseq_scratch0], %[src]\n\t"
+ RSEQ_ASM_DEFINE_ABORT(4,
+ "movq %[rseq_scratch2], %[len]\n\t"
+ "movq %[rseq_scratch1], %[dst]\n\t"
+ "movq %[rseq_scratch0], %[src]\n\t",
+ abort)
+ RSEQ_ASM_DEFINE_CMPFAIL(5,
+ "movq %[rseq_scratch2], %[len]\n\t"
+ "movq %[rseq_scratch1], %[dst]\n\t"
+ "movq %[rseq_scratch0], %[src]\n\t",
+ cmpfail)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_CMPFAIL(6,
+ "movq %[rseq_scratch2], %[len]\n\t"
+ "movq %[rseq_scratch1], %[dst]\n\t"
+ "movq %[rseq_scratch0], %[src]\n\t",
+ error1)
+ RSEQ_ASM_DEFINE_CMPFAIL(7,
+ "movq %[rseq_scratch2], %[len]\n\t"
+ "movq %[rseq_scratch1], %[dst]\n\t"
+ "movq %[rseq_scratch0], %[src]\n\t",
+ error2)
+#endif
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv),
+ /* try memcpy input */
+ [dst] "r" (dst),
+ [src] "r" (src),
+ [len] "r" (len),
+ [rseq_scratch0] "m" (rseq_scratch[0]),
+ [rseq_scratch1] "m" (rseq_scratch[1]),
+ [rseq_scratch2] "m" (rseq_scratch[2])
+ : "memory", "cc", "rax"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#elif defined(__i386__)
+
+#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "cmpl %[v], %[expect]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+ "cmpl %[v], %[expect]\n\t"
+ "jnz %l[error2]\n\t"
+#endif
+ /* final store */
+ "movl %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "r" (newv)
+ : "memory", "cc", "eax"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+/*
+ * Compare @v against @expectnot. When it does _not_ match, load @v
+ * into @load, and store the content of *@v + voffp into @v.
+ */
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
+ long voffp, intptr_t *load, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "movl %[v], %%ebx\n\t"
+ "cmpl %%ebx, %[expectnot]\n\t"
+ "je %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+ "movl %[v], %%ebx\n\t"
+ "cmpl %%ebx, %[expectnot]\n\t"
+ "je %l[error2]\n\t"
+#endif
+ "movl %%ebx, %[load]\n\t"
+ "addl %[voffp], %%ebx\n\t"
+ "movl (%%ebx), %%ebx\n\t"
+ /* final store */
+ "movl %%ebx, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(5)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* final store input */
+ [v] "m" (*v),
+ [expectnot] "r" (expectnot),
+ [voffp] "ir" (voffp),
+ [load] "m" (*load)
+ : "memory", "cc", "eax", "ebx"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+#endif
+ /* final store */
+ "addl %[count], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(4)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* final store input */
+ [v] "m" (*v),
+ [count] "ir" (count)
+ : "memory", "cc", "eax"
+ RSEQ_INJECT_CLOBBER
+ : abort
+#ifdef RSEQ_COMPARE_TWICE
+ , error1
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+#endif
+}
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t expect2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "cmpl %[v], %[expect]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+ "cmpl %[expect2], %[v2]\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+ "cmpl %[v], %[expect]\n\t"
+ "jnz %l[error2]\n\t"
+ "cmpl %[expect2], %[v2]\n\t"
+ "jnz %l[error3]\n\t"
+#endif
+ "movl %[newv], %%eax\n\t"
+ /* final store */
+ "movl %%eax, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* cmp2 input */
+ [v2] "m" (*v2),
+ [expect2] "r" (expect2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "r" (expect),
+ [newv] "m" (newv)
+ : "memory", "cc", "eax"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2, error3
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("1st expected value comparison failed");
+error3:
+ rseq_after_asm_goto();
+ rseq_bug("2nd expected value comparison failed");
+#endif
+}
+
+#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
+
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t newv2,
+ intptr_t newv, int cpu)
+{
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "movl %[expect], %%eax\n\t"
+ "cmpl %[v], %%eax\n\t"
+ "jnz %l[cmpfail]\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
+ "movl %[expect], %%eax\n\t"
+ "cmpl %[v], %%eax\n\t"
+ "jnz %l[error2]\n\t"
+#endif
+ /* try store */
+ "movl %[newv2], %[v2]\n\t"
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ "lock; addl $0,-128(%%esp)\n\t"
+#endif
+ /* final store */
+ "movl %[newv], %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ RSEQ_ASM_DEFINE_ABORT(4, "", abort)
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* try store input */
+ [v2] "m" (*v2),
+ [newv2] "r" (newv2),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "m" (expect),
+ [newv] "r" (newv)
+ : "memory", "cc", "eax"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+
+}
+
+/* TODO: implement a faster memcpy. */
+static inline __attribute__((always_inline))
+int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
+ void *dst, void *src, size_t len,
+ intptr_t newv, int cpu)
+{
+ uint32_t rseq_scratch[3];
+
+ RSEQ_INJECT_C(9)
+
+ __asm__ __volatile__ goto (
+ RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
+ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
+#endif
+ "movl %[src], %[rseq_scratch0]\n\t"
+ "movl %[dst], %[rseq_scratch1]\n\t"
+ "movl %[len], %[rseq_scratch2]\n\t"
+ /* Start rseq by storing table entry pointer into rseq_cs. */
+ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 4f)
+ RSEQ_INJECT_ASM(3)
+ "movl %[expect], %%eax\n\t"
+ "cmpl %%eax, %[v]\n\t"
+ "jnz 5f\n\t"
+ RSEQ_INJECT_ASM(4)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_TEMPLATE_CPU_ID_OFFSET(%[rseq_offset]), 6f)
+ "movl %[expect], %%eax\n\t"
+ "cmpl %%eax, %[v]\n\t"
+ "jnz 7f\n\t"
+#endif
+ /* try memcpy */
+ "test %[len], %[len]\n\t" \
+ "jz 333f\n\t" \
+ "222:\n\t" \
+ "movb (%[src]), %%al\n\t" \
+ "movb %%al, (%[dst])\n\t" \
+ "inc %[src]\n\t" \
+ "inc %[dst]\n\t" \
+ "dec %[len]\n\t" \
+ "jnz 222b\n\t" \
+ "333:\n\t" \
+ RSEQ_INJECT_ASM(5)
+#ifdef RSEQ_TEMPLATE_MO_RELEASE
+ "lock; addl $0,-128(%%esp)\n\t"
+#endif
+ "movl %[newv], %%eax\n\t"
+ /* final store */
+ "movl %%eax, %[v]\n\t"
+ "2:\n\t"
+ RSEQ_INJECT_ASM(6)
+ /* teardown */
+ "movl %[rseq_scratch2], %[len]\n\t"
+ "movl %[rseq_scratch1], %[dst]\n\t"
+ "movl %[rseq_scratch0], %[src]\n\t"
+ RSEQ_ASM_DEFINE_ABORT(4,
+ "movl %[rseq_scratch2], %[len]\n\t"
+ "movl %[rseq_scratch1], %[dst]\n\t"
+ "movl %[rseq_scratch0], %[src]\n\t",
+ abort)
+ RSEQ_ASM_DEFINE_CMPFAIL(5,
+ "movl %[rseq_scratch2], %[len]\n\t"
+ "movl %[rseq_scratch1], %[dst]\n\t"
+ "movl %[rseq_scratch0], %[src]\n\t",
+ cmpfail)
+#ifdef RSEQ_COMPARE_TWICE
+ RSEQ_ASM_DEFINE_CMPFAIL(6,
+ "movl %[rseq_scratch2], %[len]\n\t"
+ "movl %[rseq_scratch1], %[dst]\n\t"
+ "movl %[rseq_scratch0], %[src]\n\t",
+ error1)
+ RSEQ_ASM_DEFINE_CMPFAIL(7,
+ "movl %[rseq_scratch2], %[len]\n\t"
+ "movl %[rseq_scratch1], %[dst]\n\t"
+ "movl %[rseq_scratch0], %[src]\n\t",
+ error2)
+#endif
+ : /* gcc asm goto does not allow outputs */
+ : [cpu_id] "r" (cpu),
+ [rseq_offset] "r" (rseq_offset),
+ /* final store input */
+ [v] "m" (*v),
+ [expect] "m" (expect),
+ [newv] "m" (newv),
+ /* try memcpy input */
+ [dst] "r" (dst),
+ [src] "r" (src),
+ [len] "r" (len),
+ [rseq_scratch0] "m" (rseq_scratch[0]),
+ [rseq_scratch1] "m" (rseq_scratch[1]),
+ [rseq_scratch2] "m" (rseq_scratch[2])
+ : "memory", "cc", "eax"
+ RSEQ_INJECT_CLOBBER
+ : abort, cmpfail
+#ifdef RSEQ_COMPARE_TWICE
+ , error1, error2
+#endif
+ );
+ rseq_after_asm_goto();
+ return 0;
+abort:
+ rseq_after_asm_goto();
+ RSEQ_INJECT_FAILED
+ return -1;
+cmpfail:
+ rseq_after_asm_goto();
+ return 1;
+#ifdef RSEQ_COMPARE_TWICE
+error1:
+ rseq_after_asm_goto();
+ rseq_bug("cpu_id comparison failed");
+error2:
+ rseq_after_asm_goto();
+ rseq_bug("expected value comparison failed");
+#endif
+}
+
+#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
+ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
+
+#endif
+
+#include "rseq-bits-reset.h"
diff --git a/tools/testing/selftests/rseq/rseq-x86.h b/tools/testing/selftests/rseq/rseq-x86.h
index bd01dc41ca13..fb65ef54b0fb 100644
--- a/tools/testing/selftests/rseq/rseq-x86.h
+++ b/tools/testing/selftests/rseq/rseq-x86.h
@@ -2,9 +2,13 @@
/*
* rseq-x86.h
*
- * (C) Copyright 2016-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
+#ifndef RSEQ_H
+#error "Never use <rseq-x86.h> directly; include <rseq.h> instead."
+#endif
+
#include <stdint.h>
/*
@@ -22,9 +26,10 @@
* address through a "r" input operand.
*/
-/* Offset of cpu_id and rseq_cs fields in struct rseq. */
+/* Offset of cpu_id, rseq_cs, and mm_cid fields in struct rseq. */
#define RSEQ_CPU_ID_OFFSET 4
#define RSEQ_CS_OFFSET 8
+#define RSEQ_MM_CID_OFFSET 24
#ifdef __x86_64__
@@ -50,10 +55,6 @@ do { \
RSEQ_WRITE_ONCE(*p, v); \
} while (0)
-#ifdef RSEQ_SKIP_FASTPATH
-#include "rseq-skip.h"
-#else /* !RSEQ_SKIP_FASTPATH */
-
#define __RSEQ_ASM_DEFINE_TABLE(label, version, flags, \
start_ip, post_commit_offset, abort_ip) \
".pushsection __rseq_cs, \"aw\"\n\t" \
@@ -112,525 +113,6 @@ do { \
"jmp %l[" __rseq_str(cmpfail_label) "]\n\t" \
".popsection\n\t"
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "cmpq %[v], %[expect]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
- "cmpq %[v], %[expect]\n\t"
- "jnz %l[error2]\n\t"
-#endif
- /* final store */
- "movq %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- : "memory", "cc", "rax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-/*
- * Compare @v against @expectnot. When it does _not_ match, load @v
- * into @load, and store the content of *@v + voffp into @v.
- */
-static inline __attribute__((always_inline))
-int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
- long voffp, intptr_t *load, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "movq %[v], %%rbx\n\t"
- "cmpq %%rbx, %[expectnot]\n\t"
- "je %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
- "movq %[v], %%rbx\n\t"
- "cmpq %%rbx, %[expectnot]\n\t"
- "je %l[error2]\n\t"
-#endif
- "movq %%rbx, %[load]\n\t"
- "addq %[voffp], %%rbx\n\t"
- "movq (%%rbx), %%rbx\n\t"
- /* final store */
- "movq %%rbx, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* final store input */
- [v] "m" (*v),
- [expectnot] "r" (expectnot),
- [voffp] "er" (voffp),
- [load] "m" (*load)
- : "memory", "cc", "rax", "rbx"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_addv(intptr_t *v, intptr_t count, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
-#endif
- /* final store */
- "addq %[count], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* final store input */
- [v] "m" (*v),
- [count] "er" (count)
- : "memory", "cc", "rax"
- RSEQ_INJECT_CLOBBER
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-#endif
-}
-
-#define RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV
-
-/*
- * pval = *(ptr+off)
- * *pval += inc;
- */
-static inline __attribute__((always_inline))
-int rseq_offset_deref_addv(intptr_t *ptr, long off, intptr_t inc, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
-#endif
- /* get p+v */
- "movq %[ptr], %%rbx\n\t"
- "addq %[off], %%rbx\n\t"
- /* get pv */
- "movq (%%rbx), %%rcx\n\t"
- /* *pv += inc */
- "addq %[inc], (%%rcx)\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* final store input */
- [ptr] "m" (*ptr),
- [off] "er" (off),
- [inc] "er" (inc)
- : "memory", "cc", "rax", "rbx", "rcx"
- RSEQ_INJECT_CLOBBER
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- return 0;
-abort:
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_bug("cpu_id comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "cmpq %[v], %[expect]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
- "cmpq %[v], %[expect]\n\t"
- "jnz %l[error2]\n\t"
-#endif
- /* try store */
- "movq %[newv2], %[v2]\n\t"
- RSEQ_INJECT_ASM(5)
- /* final store */
- "movq %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "r" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- : "memory", "cc", "rax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-/* x86-64 is TSO. */
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- return rseq_cmpeqv_trystorev_storev(v, expect, v2, newv2, newv, cpu);
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t expect2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "cmpq %[v], %[expect]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
- "cmpq %[v2], %[expect2]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(5)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
- "cmpq %[v], %[expect]\n\t"
- "jnz %l[error2]\n\t"
- "cmpq %[v2], %[expect2]\n\t"
- "jnz %l[error3]\n\t"
-#endif
- /* final store */
- "movq %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* cmp2 input */
- [v2] "m" (*v2),
- [expect2] "r" (expect2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- : "memory", "cc", "rax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2, error3
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("1st expected value comparison failed");
-error3:
- rseq_after_asm_goto();
- rseq_bug("2nd expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- uint64_t rseq_scratch[3];
-
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- "movq %[src], %[rseq_scratch0]\n\t"
- "movq %[dst], %[rseq_scratch1]\n\t"
- "movq %[len], %[rseq_scratch2]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "cmpq %[v], %[expect]\n\t"
- "jnz 5f\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 6f)
- "cmpq %[v], %[expect]\n\t"
- "jnz 7f\n\t"
-#endif
- /* try memcpy */
- "test %[len], %[len]\n\t" \
- "jz 333f\n\t" \
- "222:\n\t" \
- "movb (%[src]), %%al\n\t" \
- "movb %%al, (%[dst])\n\t" \
- "inc %[src]\n\t" \
- "inc %[dst]\n\t" \
- "dec %[len]\n\t" \
- "jnz 222b\n\t" \
- "333:\n\t" \
- RSEQ_INJECT_ASM(5)
- /* final store */
- "movq %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- /* teardown */
- "movq %[rseq_scratch2], %[len]\n\t"
- "movq %[rseq_scratch1], %[dst]\n\t"
- "movq %[rseq_scratch0], %[src]\n\t"
- RSEQ_ASM_DEFINE_ABORT(4,
- "movq %[rseq_scratch2], %[len]\n\t"
- "movq %[rseq_scratch1], %[dst]\n\t"
- "movq %[rseq_scratch0], %[src]\n\t",
- abort)
- RSEQ_ASM_DEFINE_CMPFAIL(5,
- "movq %[rseq_scratch2], %[len]\n\t"
- "movq %[rseq_scratch1], %[dst]\n\t"
- "movq %[rseq_scratch0], %[src]\n\t",
- cmpfail)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_CMPFAIL(6,
- "movq %[rseq_scratch2], %[len]\n\t"
- "movq %[rseq_scratch1], %[dst]\n\t"
- "movq %[rseq_scratch0], %[src]\n\t",
- error1)
- RSEQ_ASM_DEFINE_CMPFAIL(7,
- "movq %[rseq_scratch2], %[len]\n\t"
- "movq %[rseq_scratch1], %[dst]\n\t"
- "movq %[rseq_scratch0], %[src]\n\t",
- error2)
-#endif
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len),
- [rseq_scratch0] "m" (rseq_scratch[0]),
- [rseq_scratch1] "m" (rseq_scratch[1]),
- [rseq_scratch2] "m" (rseq_scratch[2])
- : "memory", "cc", "rax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-/* x86-64 is TSO. */
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- return rseq_cmpeqv_trymemcpy_storev(v, expect, dst, src, len,
- newv, cpu);
-}
-
-#endif /* !RSEQ_SKIP_FASTPATH */
-
#elif defined(__i386__)
#define RSEQ_ASM_TP_SEGMENT %%gs
@@ -657,10 +139,6 @@ do { \
RSEQ_WRITE_ONCE(*p, v); \
} while (0)
-#ifdef RSEQ_SKIP_FASTPATH
-#include "rseq-skip.h"
-#else /* !RSEQ_SKIP_FASTPATH */
-
/*
* Use eax as scratch register and take memory operands as input to
* lessen register pressure. Especially needed when compiling in O0.
@@ -721,645 +199,36 @@ do { \
"jmp %l[" __rseq_str(cmpfail_label) "]\n\t" \
".popsection\n\t"
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "cmpl %[v], %[expect]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
- "cmpl %[v], %[expect]\n\t"
- "jnz %l[error2]\n\t"
-#endif
- /* final store */
- "movl %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- : "memory", "cc", "eax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-/*
- * Compare @v against @expectnot. When it does _not_ match, load @v
- * into @load, and store the content of *@v + voffp into @v.
- */
-static inline __attribute__((always_inline))
-int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
- long voffp, intptr_t *load, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "movl %[v], %%ebx\n\t"
- "cmpl %%ebx, %[expectnot]\n\t"
- "je %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
- "movl %[v], %%ebx\n\t"
- "cmpl %%ebx, %[expectnot]\n\t"
- "je %l[error2]\n\t"
-#endif
- "movl %%ebx, %[load]\n\t"
- "addl %[voffp], %%ebx\n\t"
- "movl (%%ebx), %%ebx\n\t"
- /* final store */
- "movl %%ebx, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(5)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* final store input */
- [v] "m" (*v),
- [expectnot] "r" (expectnot),
- [voffp] "ir" (voffp),
- [load] "m" (*load)
- : "memory", "cc", "eax", "ebx"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_addv(intptr_t *v, intptr_t count, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
-#endif
- /* final store */
- "addl %[count], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(4)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* final store input */
- [v] "m" (*v),
- [count] "ir" (count)
- : "memory", "cc", "eax"
- RSEQ_INJECT_CLOBBER
- : abort
-#ifdef RSEQ_COMPARE_TWICE
- , error1
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "cmpl %[v], %[expect]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
- "cmpl %[v], %[expect]\n\t"
- "jnz %l[error2]\n\t"
-#endif
- /* try store */
- "movl %[newv2], %%eax\n\t"
- "movl %%eax, %[v2]\n\t"
- RSEQ_INJECT_ASM(5)
- /* final store */
- "movl %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "m" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "r" (newv)
- : "memory", "cc", "eax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trystorev_storev_release(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t newv2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "movl %[expect], %%eax\n\t"
- "cmpl %[v], %%eax\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
- "movl %[expect], %%eax\n\t"
- "cmpl %[v], %%eax\n\t"
- "jnz %l[error2]\n\t"
-#endif
- /* try store */
- "movl %[newv2], %[v2]\n\t"
- RSEQ_INJECT_ASM(5)
- "lock; addl $0,-128(%%esp)\n\t"
- /* final store */
- "movl %[newv], %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* try store input */
- [v2] "m" (*v2),
- [newv2] "r" (newv2),
- /* final store input */
- [v] "m" (*v),
- [expect] "m" (expect),
- [newv] "r" (newv)
- : "memory", "cc", "eax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-
-}
-
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_cmpeqv_storev(intptr_t *v, intptr_t expect,
- intptr_t *v2, intptr_t expect2,
- intptr_t newv, int cpu)
-{
- RSEQ_INJECT_C(9)
-
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
-#endif
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "cmpl %[v], %[expect]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(4)
- "cmpl %[expect2], %[v2]\n\t"
- "jnz %l[cmpfail]\n\t"
- RSEQ_INJECT_ASM(5)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), %l[error1])
- "cmpl %[v], %[expect]\n\t"
- "jnz %l[error2]\n\t"
- "cmpl %[expect2], %[v2]\n\t"
- "jnz %l[error3]\n\t"
#endif
- "movl %[newv], %%eax\n\t"
- /* final store */
- "movl %%eax, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- RSEQ_ASM_DEFINE_ABORT(4, "", abort)
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* cmp2 input */
- [v2] "m" (*v2),
- [expect2] "r" (expect2),
- /* final store input */
- [v] "m" (*v),
- [expect] "r" (expect),
- [newv] "m" (newv)
- : "memory", "cc", "eax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2, error3
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("1st expected value comparison failed");
-error3:
- rseq_after_asm_goto();
- rseq_bug("2nd expected value comparison failed");
-#endif
-}
-/* TODO: implement a faster memcpy. */
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- uint32_t rseq_scratch[3];
+/* Per-cpu-id indexing. */
- RSEQ_INJECT_C(9)
+#define RSEQ_TEMPLATE_CPU_ID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-x86-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- "movl %[src], %[rseq_scratch0]\n\t"
- "movl %[dst], %[rseq_scratch1]\n\t"
- "movl %[len], %[rseq_scratch2]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "movl %[expect], %%eax\n\t"
- "cmpl %%eax, %[v]\n\t"
- "jnz 5f\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 6f)
- "movl %[expect], %%eax\n\t"
- "cmpl %%eax, %[v]\n\t"
- "jnz 7f\n\t"
-#endif
- /* try memcpy */
- "test %[len], %[len]\n\t" \
- "jz 333f\n\t" \
- "222:\n\t" \
- "movb (%[src]), %%al\n\t" \
- "movb %%al, (%[dst])\n\t" \
- "inc %[src]\n\t" \
- "inc %[dst]\n\t" \
- "dec %[len]\n\t" \
- "jnz 222b\n\t" \
- "333:\n\t" \
- RSEQ_INJECT_ASM(5)
- "movl %[newv], %%eax\n\t"
- /* final store */
- "movl %%eax, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- /* teardown */
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t"
- RSEQ_ASM_DEFINE_ABORT(4,
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t",
- abort)
- RSEQ_ASM_DEFINE_CMPFAIL(5,
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t",
- cmpfail)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_CMPFAIL(6,
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t",
- error1)
- RSEQ_ASM_DEFINE_CMPFAIL(7,
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t",
- error2)
-#endif
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* final store input */
- [v] "m" (*v),
- [expect] "m" (expect),
- [newv] "m" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len),
- [rseq_scratch0] "m" (rseq_scratch[0]),
- [rseq_scratch1] "m" (rseq_scratch[1]),
- [rseq_scratch2] "m" (rseq_scratch[2])
- : "memory", "cc", "eax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-x86-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_CPU_ID
-/* TODO: implement a faster memcpy. */
-static inline __attribute__((always_inline))
-int rseq_cmpeqv_trymemcpy_storev_release(intptr_t *v, intptr_t expect,
- void *dst, void *src, size_t len,
- intptr_t newv, int cpu)
-{
- uint32_t rseq_scratch[3];
+/* Per-mm-cid indexing. */
- RSEQ_INJECT_C(9)
+#define RSEQ_TEMPLATE_MM_CID
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-x86-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
- __asm__ __volatile__ goto (
- RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
- RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
-#endif
- "movl %[src], %[rseq_scratch0]\n\t"
- "movl %[dst], %[rseq_scratch1]\n\t"
- "movl %[len], %[rseq_scratch2]\n\t"
- /* Start rseq by storing table entry pointer into rseq_cs. */
- RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_ASM_TP_SEGMENT:RSEQ_CS_OFFSET(%[rseq_offset]))
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 4f)
- RSEQ_INJECT_ASM(3)
- "movl %[expect], %%eax\n\t"
- "cmpl %%eax, %[v]\n\t"
- "jnz 5f\n\t"
- RSEQ_INJECT_ASM(4)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_CMP_CPU_ID(cpu_id, RSEQ_ASM_TP_SEGMENT:RSEQ_CPU_ID_OFFSET(%[rseq_offset]), 6f)
- "movl %[expect], %%eax\n\t"
- "cmpl %%eax, %[v]\n\t"
- "jnz 7f\n\t"
-#endif
- /* try memcpy */
- "test %[len], %[len]\n\t" \
- "jz 333f\n\t" \
- "222:\n\t" \
- "movb (%[src]), %%al\n\t" \
- "movb %%al, (%[dst])\n\t" \
- "inc %[src]\n\t" \
- "inc %[dst]\n\t" \
- "dec %[len]\n\t" \
- "jnz 222b\n\t" \
- "333:\n\t" \
- RSEQ_INJECT_ASM(5)
- "lock; addl $0,-128(%%esp)\n\t"
- "movl %[newv], %%eax\n\t"
- /* final store */
- "movl %%eax, %[v]\n\t"
- "2:\n\t"
- RSEQ_INJECT_ASM(6)
- /* teardown */
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t"
- RSEQ_ASM_DEFINE_ABORT(4,
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t",
- abort)
- RSEQ_ASM_DEFINE_CMPFAIL(5,
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t",
- cmpfail)
-#ifdef RSEQ_COMPARE_TWICE
- RSEQ_ASM_DEFINE_CMPFAIL(6,
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t",
- error1)
- RSEQ_ASM_DEFINE_CMPFAIL(7,
- "movl %[rseq_scratch2], %[len]\n\t"
- "movl %[rseq_scratch1], %[dst]\n\t"
- "movl %[rseq_scratch0], %[src]\n\t",
- error2)
-#endif
- : /* gcc asm goto does not allow outputs */
- : [cpu_id] "r" (cpu),
- [rseq_offset] "r" (rseq_offset),
- /* final store input */
- [v] "m" (*v),
- [expect] "m" (expect),
- [newv] "m" (newv),
- /* try memcpy input */
- [dst] "r" (dst),
- [src] "r" (src),
- [len] "r" (len),
- [rseq_scratch0] "m" (rseq_scratch[0]),
- [rseq_scratch1] "m" (rseq_scratch[1]),
- [rseq_scratch2] "m" (rseq_scratch[2])
- : "memory", "cc", "eax"
- RSEQ_INJECT_CLOBBER
- : abort, cmpfail
-#ifdef RSEQ_COMPARE_TWICE
- , error1, error2
-#endif
- );
- rseq_after_asm_goto();
- return 0;
-abort:
- rseq_after_asm_goto();
- RSEQ_INJECT_FAILED
- return -1;
-cmpfail:
- rseq_after_asm_goto();
- return 1;
-#ifdef RSEQ_COMPARE_TWICE
-error1:
- rseq_after_asm_goto();
- rseq_bug("cpu_id comparison failed");
-error2:
- rseq_after_asm_goto();
- rseq_bug("expected value comparison failed");
-#endif
-}
+#define RSEQ_TEMPLATE_MO_RELEASE
+#include "rseq-x86-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELEASE
+#undef RSEQ_TEMPLATE_MM_CID
-#endif /* !RSEQ_SKIP_FASTPATH */
+/* APIs which are not based on cpu ids. */
-#endif
+#define RSEQ_TEMPLATE_CPU_ID_NONE
+#define RSEQ_TEMPLATE_MO_RELAXED
+#include "rseq-x86-bits.h"
+#undef RSEQ_TEMPLATE_MO_RELAXED
+#undef RSEQ_TEMPLATE_CPU_ID_NONE
diff --git a/tools/testing/selftests/rseq/rseq.c b/tools/testing/selftests/rseq/rseq.c
index 4177f9507bbe..4e4aa006004c 100644
--- a/tools/testing/selftests/rseq/rseq.c
+++ b/tools/testing/selftests/rseq/rseq.c
@@ -28,6 +28,8 @@
#include <limits.h>
#include <dlfcn.h>
#include <stddef.h>
+#include <sys/auxv.h>
+#include <linux/auxvec.h>
#include "../kselftest.h"
#include "rseq.h"
@@ -36,20 +38,38 @@ static const ptrdiff_t *libc_rseq_offset_p;
static const unsigned int *libc_rseq_size_p;
static const unsigned int *libc_rseq_flags_p;
-/* Offset from the thread pointer to the rseq area. */
+/* Offset from the thread pointer to the rseq area. */
ptrdiff_t rseq_offset;
-/* Size of the registered rseq area. 0 if the registration was
- unsuccessful. */
+/*
+ * Size of the registered rseq area. 0 if the registration was
+ * unsuccessful.
+ */
unsigned int rseq_size = -1U;
/* Flags used during rseq registration. */
unsigned int rseq_flags;
+/*
+ * rseq feature size supported by the kernel. 0 if the registration was
+ * unsuccessful.
+ */
+unsigned int rseq_feature_size = -1U;
+
static int rseq_ownership;
+static int rseq_reg_success; /* At least one rseq registration has succeded. */
+
+/* Allocate a large area for the TLS. */
+#define RSEQ_THREAD_AREA_ALLOC_SIZE 1024
+
+/* Original struct rseq feature size is 20 bytes. */
+#define ORIG_RSEQ_FEATURE_SIZE 20
+
+/* Original struct rseq allocation size is 32 bytes. */
+#define ORIG_RSEQ_ALLOC_SIZE 32
static
-__thread struct rseq_abi __rseq_abi __attribute__((tls_model("initial-exec"))) = {
+__thread struct rseq_abi __rseq_abi __attribute__((tls_model("initial-exec"), aligned(RSEQ_THREAD_AREA_ALLOC_SIZE))) = {
.cpu_id = RSEQ_ABI_CPU_ID_UNINITIALIZED,
};
@@ -59,6 +79,11 @@ static int sys_rseq(struct rseq_abi *rseq_abi, uint32_t rseq_len,
return syscall(__NR_rseq, rseq_abi, rseq_len, flags, sig);
}
+static int sys_getcpu(unsigned *cpu, unsigned *node)
+{
+ return syscall(__NR_getcpu, cpu, node, NULL);
+}
+
int rseq_available(void)
{
int rc;
@@ -84,10 +109,16 @@ int rseq_register_current_thread(void)
/* Treat libc's ownership as a successful registration. */
return 0;
}
- rc = sys_rseq(&__rseq_abi, sizeof(struct rseq_abi), 0, RSEQ_SIG);
- if (rc)
+ rc = sys_rseq(&__rseq_abi, rseq_size, 0, RSEQ_SIG);
+ if (rc) {
+ if (RSEQ_READ_ONCE(rseq_reg_success)) {
+ /* Incoherent success/failure within process. */
+ abort();
+ }
return -1;
+ }
assert(rseq_current_cpu_raw() >= 0);
+ RSEQ_WRITE_ONCE(rseq_reg_success, 1);
return 0;
}
@@ -99,12 +130,28 @@ int rseq_unregister_current_thread(void)
/* Treat libc's ownership as a successful unregistration. */
return 0;
}
- rc = sys_rseq(&__rseq_abi, sizeof(struct rseq_abi), RSEQ_ABI_FLAG_UNREGISTER, RSEQ_SIG);
+ rc = sys_rseq(&__rseq_abi, rseq_size, RSEQ_ABI_FLAG_UNREGISTER, RSEQ_SIG);
if (rc)
return -1;
return 0;
}
+static
+unsigned int get_rseq_feature_size(void)
+{
+ unsigned long auxv_rseq_feature_size, auxv_rseq_align;
+
+ auxv_rseq_align = getauxval(AT_RSEQ_ALIGN);
+ assert(!auxv_rseq_align || auxv_rseq_align <= RSEQ_THREAD_AREA_ALLOC_SIZE);
+
+ auxv_rseq_feature_size = getauxval(AT_RSEQ_FEATURE_SIZE);
+ assert(!auxv_rseq_feature_size || auxv_rseq_feature_size <= RSEQ_THREAD_AREA_ALLOC_SIZE);
+ if (auxv_rseq_feature_size)
+ return auxv_rseq_feature_size;
+ else
+ return ORIG_RSEQ_FEATURE_SIZE;
+}
+
static __attribute__((constructor))
void rseq_init(void)
{
@@ -117,14 +164,24 @@ void rseq_init(void)
rseq_offset = *libc_rseq_offset_p;
rseq_size = *libc_rseq_size_p;
rseq_flags = *libc_rseq_flags_p;
+ rseq_feature_size = get_rseq_feature_size();
+ if (rseq_feature_size > rseq_size)
+ rseq_feature_size = rseq_size;
return;
}
- if (!rseq_available())
- return;
rseq_ownership = 1;
+ if (!rseq_available()) {
+ rseq_size = 0;
+ rseq_feature_size = 0;
+ return;
+ }
rseq_offset = (void *)&__rseq_abi - rseq_thread_pointer();
- rseq_size = sizeof(struct rseq_abi);
rseq_flags = 0;
+ rseq_feature_size = get_rseq_feature_size();
+ if (rseq_feature_size == ORIG_RSEQ_FEATURE_SIZE)
+ rseq_size = ORIG_RSEQ_ALLOC_SIZE;
+ else
+ rseq_size = RSEQ_THREAD_AREA_ALLOC_SIZE;
}
static __attribute__((destructor))
@@ -134,6 +191,7 @@ void rseq_exit(void)
return;
rseq_offset = 0;
rseq_size = -1U;
+ rseq_feature_size = -1U;
rseq_ownership = 0;
}
@@ -148,3 +206,16 @@ int32_t rseq_fallback_current_cpu(void)
}
return cpu;
}
+
+int32_t rseq_fallback_current_node(void)
+{
+ uint32_t cpu_id, node_id;
+ int ret;
+
+ ret = sys_getcpu(&cpu_id, &node_id);
+ if (ret) {
+ perror("sys_getcpu()");
+ return ret;
+ }
+ return (int32_t) node_id;
+}
diff --git a/tools/testing/selftests/rseq/rseq.h b/tools/testing/selftests/rseq/rseq.h
index 6f7513384bf5..d7364ea4d201 100644
--- a/tools/testing/selftests/rseq/rseq.h
+++ b/tools/testing/selftests/rseq/rseq.h
@@ -20,6 +20,15 @@
#include "rseq-abi.h"
#include "compiler.h"
+#ifndef rseq_sizeof_field
+#define rseq_sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
+#endif
+
+#ifndef rseq_offsetofend
+#define rseq_offsetofend(TYPE, MEMBER) \
+ (offsetof(TYPE, MEMBER) + rseq_sizeof_field(TYPE, MEMBER))
+#endif
+
/*
* Empty code injection macros, override when testing.
* It is important to consider that the ASM injection macros need to be
@@ -47,14 +56,38 @@
#include "rseq-thread-pointer.h"
-/* Offset from the thread pointer to the rseq area. */
+/* Offset from the thread pointer to the rseq area. */
extern ptrdiff_t rseq_offset;
-/* Size of the registered rseq area. 0 if the registration was
- unsuccessful. */
+
+/*
+ * Size of the registered rseq area. 0 if the registration was
+ * unsuccessful.
+ */
extern unsigned int rseq_size;
-/* Flags used during rseq registration. */
+
+/* Flags used during rseq registration. */
extern unsigned int rseq_flags;
+/*
+ * rseq feature size supported by the kernel. 0 if the registration was
+ * unsuccessful.
+ */
+extern unsigned int rseq_feature_size;
+
+enum rseq_mo {
+ RSEQ_MO_RELAXED = 0,
+ RSEQ_MO_CONSUME = 1, /* Unused */
+ RSEQ_MO_ACQUIRE = 2, /* Unused */
+ RSEQ_MO_RELEASE = 3,
+ RSEQ_MO_ACQ_REL = 4, /* Unused */
+ RSEQ_MO_SEQ_CST = 5, /* Unused */
+};
+
+enum rseq_percpu_mode {
+ RSEQ_PERCPU_CPU_ID = 0,
+ RSEQ_PERCPU_MM_CID = 1,
+};
+
static inline struct rseq_abi *rseq_get_abi(void)
{
return (struct rseq_abi *) ((uintptr_t) rseq_thread_pointer() + rseq_offset);
@@ -119,6 +152,11 @@ int rseq_unregister_current_thread(void);
int32_t rseq_fallback_current_cpu(void);
/*
+ * Restartable sequence fallback for reading the current node number.
+ */
+int32_t rseq_fallback_current_node(void);
+
+/*
* Values returned can be either the current CPU number, -1 (rseq is
* uninitialized), or -2 (rseq initialization has failed).
*/
@@ -153,6 +191,30 @@ static inline uint32_t rseq_current_cpu(void)
return cpu;
}
+static inline bool rseq_node_id_available(void)
+{
+ return (int) rseq_feature_size >= rseq_offsetofend(struct rseq_abi, node_id);
+}
+
+/*
+ * Current NUMA node number.
+ */
+static inline uint32_t rseq_current_node_id(void)
+{
+ assert(rseq_node_id_available());
+ return RSEQ_ACCESS_ONCE(rseq_get_abi()->node_id);
+}
+
+static inline bool rseq_mm_cid_available(void)
+{
+ return (int) rseq_feature_size >= rseq_offsetofend(struct rseq_abi, mm_cid);
+}
+
+static inline uint32_t rseq_current_mm_cid(void)
+{
+ return RSEQ_ACCESS_ONCE(rseq_get_abi()->mm_cid);
+}
+
static inline void rseq_clear_rseq_cs(void)
{
RSEQ_WRITE_ONCE(rseq_get_abi()->rseq_cs.arch.ptr, 0);
@@ -174,4 +236,149 @@ static inline void rseq_prepare_unload(void)
rseq_clear_rseq_cs();
}
+static inline __attribute__((always_inline))
+int rseq_cmpeqv_storev(enum rseq_mo rseq_mo, enum rseq_percpu_mode percpu_mode,
+ intptr_t *v, intptr_t expect,
+ intptr_t newv, int cpu)
+{
+ if (rseq_mo != RSEQ_MO_RELAXED)
+ return -1;
+ switch (percpu_mode) {
+ case RSEQ_PERCPU_CPU_ID:
+ return rseq_cmpeqv_storev_relaxed_cpu_id(v, expect, newv, cpu);
+ case RSEQ_PERCPU_MM_CID:
+ return rseq_cmpeqv_storev_relaxed_mm_cid(v, expect, newv, cpu);
+ }
+ return -1;
+}
+
+/*
+ * Compare @v against @expectnot. When it does _not_ match, load @v
+ * into @load, and store the content of *@v + voffp into @v.
+ */
+static inline __attribute__((always_inline))
+int rseq_cmpnev_storeoffp_load(enum rseq_mo rseq_mo, enum rseq_percpu_mode percpu_mode,
+ intptr_t *v, intptr_t expectnot, long voffp, intptr_t *load,
+ int cpu)
+{
+ if (rseq_mo != RSEQ_MO_RELAXED)
+ return -1;
+ switch (percpu_mode) {
+ case RSEQ_PERCPU_CPU_ID:
+ return rseq_cmpnev_storeoffp_load_relaxed_cpu_id(v, expectnot, voffp, load, cpu);
+ case RSEQ_PERCPU_MM_CID:
+ return rseq_cmpnev_storeoffp_load_relaxed_mm_cid(v, expectnot, voffp, load, cpu);
+ }
+ return -1;
+}
+
+static inline __attribute__((always_inline))
+int rseq_addv(enum rseq_mo rseq_mo, enum rseq_percpu_mode percpu_mode,
+ intptr_t *v, intptr_t count, int cpu)
+{
+ if (rseq_mo != RSEQ_MO_RELAXED)
+ return -1;
+ switch (percpu_mode) {
+ case RSEQ_PERCPU_CPU_ID:
+ return rseq_addv_relaxed_cpu_id(v, count, cpu);
+ case RSEQ_PERCPU_MM_CID:
+ return rseq_addv_relaxed_mm_cid(v, count, cpu);
+ }
+ return -1;
+}
+
+#ifdef RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV
+/*
+ * pval = *(ptr+off)
+ * *pval += inc;
+ */
+static inline __attribute__((always_inline))
+int rseq_offset_deref_addv(enum rseq_mo rseq_mo, enum rseq_percpu_mode percpu_mode,
+ intptr_t *ptr, long off, intptr_t inc, int cpu)
+{
+ if (rseq_mo != RSEQ_MO_RELAXED)
+ return -1;
+ switch (percpu_mode) {
+ case RSEQ_PERCPU_CPU_ID:
+ return rseq_offset_deref_addv_relaxed_cpu_id(ptr, off, inc, cpu);
+ case RSEQ_PERCPU_MM_CID:
+ return rseq_offset_deref_addv_relaxed_mm_cid(ptr, off, inc, cpu);
+ }
+ return -1;
+}
+#endif
+
+static inline __attribute__((always_inline))
+int rseq_cmpeqv_trystorev_storev(enum rseq_mo rseq_mo, enum rseq_percpu_mode percpu_mode,
+ intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t newv2,
+ intptr_t newv, int cpu)
+{
+ switch (rseq_mo) {
+ case RSEQ_MO_RELAXED:
+ switch (percpu_mode) {
+ case RSEQ_PERCPU_CPU_ID:
+ return rseq_cmpeqv_trystorev_storev_relaxed_cpu_id(v, expect, v2, newv2, newv, cpu);
+ case RSEQ_PERCPU_MM_CID:
+ return rseq_cmpeqv_trystorev_storev_relaxed_mm_cid(v, expect, v2, newv2, newv, cpu);
+ }
+ return -1;
+ case RSEQ_MO_RELEASE:
+ switch (percpu_mode) {
+ case RSEQ_PERCPU_CPU_ID:
+ return rseq_cmpeqv_trystorev_storev_release_cpu_id(v, expect, v2, newv2, newv, cpu);
+ case RSEQ_PERCPU_MM_CID:
+ return rseq_cmpeqv_trystorev_storev_release_mm_cid(v, expect, v2, newv2, newv, cpu);
+ }
+ return -1;
+ default:
+ return -1;
+ }
+}
+
+static inline __attribute__((always_inline))
+int rseq_cmpeqv_cmpeqv_storev(enum rseq_mo rseq_mo, enum rseq_percpu_mode percpu_mode,
+ intptr_t *v, intptr_t expect,
+ intptr_t *v2, intptr_t expect2,
+ intptr_t newv, int cpu)
+{
+ if (rseq_mo != RSEQ_MO_RELAXED)
+ return -1;
+ switch (percpu_mode) {
+ case RSEQ_PERCPU_CPU_ID:
+ return rseq_cmpeqv_cmpeqv_storev_relaxed_cpu_id(v, expect, v2, expect2, newv, cpu);
+ case RSEQ_PERCPU_MM_CID:
+ return rseq_cmpeqv_cmpeqv_storev_relaxed_mm_cid(v, expect, v2, expect2, newv, cpu);
+ }
+ return -1;
+}
+
+static inline __attribute__((always_inline))
+int rseq_cmpeqv_trymemcpy_storev(enum rseq_mo rseq_mo, enum rseq_percpu_mode percpu_mode,
+ intptr_t *v, intptr_t expect,
+ void *dst, void *src, size_t len,
+ intptr_t newv, int cpu)
+{
+ switch (rseq_mo) {
+ case RSEQ_MO_RELAXED:
+ switch (percpu_mode) {
+ case RSEQ_PERCPU_CPU_ID:
+ return rseq_cmpeqv_trymemcpy_storev_relaxed_cpu_id(v, expect, dst, src, len, newv, cpu);
+ case RSEQ_PERCPU_MM_CID:
+ return rseq_cmpeqv_trymemcpy_storev_relaxed_mm_cid(v, expect, dst, src, len, newv, cpu);
+ }
+ return -1;
+ case RSEQ_MO_RELEASE:
+ switch (percpu_mode) {
+ case RSEQ_PERCPU_CPU_ID:
+ return rseq_cmpeqv_trymemcpy_storev_release_cpu_id(v, expect, dst, src, len, newv, cpu);
+ case RSEQ_PERCPU_MM_CID:
+ return rseq_cmpeqv_trymemcpy_storev_release_mm_cid(v, expect, dst, src, len, newv, cpu);
+ }
+ return -1;
+ default:
+ return -1;
+ }
+}
+
#endif /* RSEQ_H_ */
diff --git a/tools/testing/selftests/rseq/run_param_test.sh b/tools/testing/selftests/rseq/run_param_test.sh
index f51bc83c9e41..8d31426ab41f 100755
--- a/tools/testing/selftests/rseq/run_param_test.sh
+++ b/tools/testing/selftests/rseq/run_param_test.sh
@@ -42,6 +42,11 @@ function do_tests()
./param_test ${TEST_LIST[$i]} -r ${REPS} -t ${NR_THREADS} ${@} ${EXTRA_ARGS} || exit 1
echo "Running compare-twice test ${TEST_NAME[$i]}"
./param_test_compare_twice ${TEST_LIST[$i]} -r ${REPS} -t ${NR_THREADS} ${@} ${EXTRA_ARGS} || exit 1
+
+ echo "Running mm_cid test ${TEST_NAME[$i]}"
+ ./param_test_mm_cid ${TEST_LIST[$i]} -r ${REPS} -t ${NR_THREADS} ${@} ${EXTRA_ARGS} || exit 1
+ echo "Running mm_cid compare-twice test ${TEST_NAME[$i]}"
+ ./param_test_mm_cid_compare_twice ${TEST_LIST[$i]} -r ${REPS} -t ${NR_THREADS} ${@} ${EXTRA_ARGS} || exit 1
let "i++"
done
}