perf tests: Move x86 tests into arch directory

Move out the x86-specific tests into tools/perf/arch/x86/tests and
define an 'arch_tests' array, which is the list of tests that only apply
to the build architecture.

We can also now begin to get rid of some of the #ifdef code that is
present in the generic perf tests.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Vikas Shivappa <vikas.shivappa@intel.com>
Cc: Vince Weaver <vince@deater.net>
Link: http://lkml.kernel.org/n/tip-9s68h4ptg06ah0lgnjz55mqn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 185 insertions, 0 deletions

diff --git a/tools/perf/arch/x86/tests/insn-x86.c b/tools/perf/arch/x86/tests/insn-x86.c
new file mode 100644
index 000000000000..b6115dfd28f0
--- /dev/null
+++ b/tools/perf/arch/x86/tests/insn-x86.c
@@ -0,0 +1,185 @@
+#include <linux/types.h>
+
+#include "debug.h"
+#include "tests/tests.h"
+#include "arch-tests.h"
+
+#include "intel-pt-decoder/insn.h"
+#include "intel-pt-decoder/intel-pt-insn-decoder.h"
+
+struct test_data {
+	u8 data[MAX_INSN_SIZE];
+	int expected_length;
+	int expected_rel;
+	const char *expected_op_str;
+	const char *expected_branch_str;
+	const char *asm_rep;
+};
+
+struct test_data test_data_32[] = {
+#include "insn-x86-dat-32.c"
+	{{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee             \trdpkru"},
+	{{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef             \twrpkru"},
+	{{0}, 0, 0, NULL, NULL, NULL},
+};
+
+struct test_data test_data_64[] = {
+#include "insn-x86-dat-64.c"
+	{{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee             \trdpkru"},
+	{{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef             \twrpkru"},
+	{{0}, 0, 0, NULL, NULL, NULL},
+};
+
+static int get_op(const char *op_str)
+{
+	struct val_data {
+		const char *name;
+		int val;
+	} vals[] = {
+		{"other",   INTEL_PT_OP_OTHER},
+		{"call",    INTEL_PT_OP_CALL},
+		{"ret",     INTEL_PT_OP_RET},
+		{"jcc",     INTEL_PT_OP_JCC},
+		{"jmp",     INTEL_PT_OP_JMP},
+		{"loop",    INTEL_PT_OP_LOOP},
+		{"iret",    INTEL_PT_OP_IRET},
+		{"int",     INTEL_PT_OP_INT},
+		{"syscall", INTEL_PT_OP_SYSCALL},
+		{"sysret",  INTEL_PT_OP_SYSRET},
+		{NULL, 0},
+	};
+	struct val_data *val;
+
+	if (!op_str || !strlen(op_str))
+		return 0;
+
+	for (val = vals; val->name; val++) {
+		if (!strcmp(val->name, op_str))
+			return val->val;
+	}
+
+	pr_debug("Failed to get op\n");
+
+	return -1;
+}
+
+static int get_branch(const char *branch_str)
+{
+	struct val_data {
+		const char *name;
+		int val;
+	} vals[] = {
+		{"no_branch",     INTEL_PT_BR_NO_BRANCH},
+		{"indirect",      INTEL_PT_BR_INDIRECT},
+		{"conditional",   INTEL_PT_BR_CONDITIONAL},
+		{"unconditional", INTEL_PT_BR_UNCONDITIONAL},
+		{NULL, 0},
+	};
+	struct val_data *val;
+
+	if (!branch_str || !strlen(branch_str))
+		return 0;
+
+	for (val = vals; val->name; val++) {
+		if (!strcmp(val->name, branch_str))
+			return val->val;
+	}
+
+	pr_debug("Failed to get branch\n");
+
+	return -1;
+}
+
+static int test_data_item(struct test_data *dat, int x86_64)
+{
+	struct intel_pt_insn intel_pt_insn;
+	struct insn insn;
+	int op, branch;
+
+	insn_init(&insn, dat->data, MAX_INSN_SIZE, x86_64);
+	insn_get_length(&insn);
+
+	if (!insn_complete(&insn)) {
+		pr_debug("Failed to decode: %s\n", dat->asm_rep);
+		return -1;
+	}
+
+	if (insn.length != dat->expected_length) {
+		pr_debug("Failed to decode length (%d vs expected %d): %s\n",
+			 insn.length, dat->expected_length, dat->asm_rep);
+		return -1;
+	}
+
+	op = get_op(dat->expected_op_str);
+	branch = get_branch(dat->expected_branch_str);
+
+	if (intel_pt_get_insn(dat->data, MAX_INSN_SIZE, x86_64, &intel_pt_insn)) {
+		pr_debug("Intel PT failed to decode: %s\n", dat->asm_rep);
+		return -1;
+	}
+
+	if ((int)intel_pt_insn.op != op) {
+		pr_debug("Failed to decode 'op' value (%d vs expected %d): %s\n",
+			 intel_pt_insn.op, op, dat->asm_rep);
+		return -1;
+	}
+
+	if ((int)intel_pt_insn.branch != branch) {
+		pr_debug("Failed to decode 'branch' value (%d vs expected %d): %s\n",
+			 intel_pt_insn.branch, branch, dat->asm_rep);
+		return -1;
+	}
+
+	if (intel_pt_insn.rel != dat->expected_rel) {
+		pr_debug("Failed to decode 'rel' value (%#x vs expected %#x): %s\n",
+			 intel_pt_insn.rel, dat->expected_rel, dat->asm_rep);
+		return -1;
+	}
+
+	pr_debug("Decoded ok: %s\n", dat->asm_rep);
+
+	return 0;
+}
+
+static int test_data_set(struct test_data *dat_set, int x86_64)
+{
+	struct test_data *dat;
+	int ret = 0;
+
+	for (dat = dat_set; dat->expected_length; dat++) {
+		if (test_data_item(dat, x86_64))
+			ret = -1;
+	}
+
+	return ret;
+}
+
+/**
+ * test__insn_x86 - test x86 instruction decoder - new instructions.
+ *
+ * This function implements a test that decodes a selection of instructions and
+ * checks the results.  The Intel PT function that further categorizes
+ * instructions (i.e. intel_pt_get_insn()) is also checked.
+ *
+ * The instructions are originally in insn-x86-dat-src.c which has been
+ * processed by scripts gen-insn-x86-dat.sh and gen-insn-x86-dat.awk to produce
+ * insn-x86-dat-32.c and insn-x86-dat-64.c which are included into this program.
+ * i.e. to add new instructions to the test, edit insn-x86-dat-src.c, run the
+ * gen-insn-x86-dat.sh script, make perf, and then run the test.
+ *
+ * If the test passes %0 is returned, otherwise %-1 is returned.  Use the
+ * verbose (-v) option to see all the instructions and whether or not they
+ * decoded successfuly.
+ */
+int test__insn_x86(void)
+{
+	int ret = 0;
+
+	if (test_data_set(test_data_32, 0))
+		ret = -1;
+
+	if (test_data_set(test_data_64, 1))
+		ret = -1;
+
+	return ret;
+}