diff options
| -rw-r--r-- | arch/sparc/include/asm/ptrace.h | 4 | ||||
| -rw-r--r-- | arch/sparc/include/asm/thread_info_64.h | 16 | ||||
| -rw-r--r-- | arch/sparc/kernel/etrap_64.S | 8 | ||||
| -rw-r--r-- | arch/sparc/kernel/syscalls.S | 4 | ||||
| -rw-r--r-- | arch/sparc/kernel/traps_64.c | 2 |
5 files changed, 19 insertions, 15 deletions
diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h index fd9c3f21cbf0..eeed804316bf 100644 --- a/arch/sparc/include/asm/ptrace.h +++ b/arch/sparc/include/asm/ptrace.h @@ -202,9 +202,7 @@ struct global_reg_snapshot { }; extern struct global_reg_snapshot global_reg_snapshot[NR_CPUS]; -#define force_successful_syscall_return() \ -do { current_thread_info()->syscall_noerror = 1; \ -} while (0) +#define force_successful_syscall_return() set_thread_noerror(1) #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV)) #define instruction_pointer(regs) ((regs)->tpc) #define instruction_pointer_set(regs, val) ((regs)->tpc = (val)) diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h index cfa8c38fb9c8..8511e5fcc97d 100644 --- a/arch/sparc/include/asm/thread_info_64.h +++ b/arch/sparc/include/asm/thread_info_64.h @@ -18,10 +18,12 @@ #define TI_FLAG_CWP_SHIFT 40 #define TI_FLAG_BYTE_CURRENT_DS 3 #define TI_FLAG_CURRENT_DS_SHIFT 32 -#define TI_FLAG_BYTE_FPDEPTH 4 -#define TI_FLAG_FPDEPTH_SHIFT 24 -#define TI_FLAG_BYTE_WSAVED 5 -#define TI_FLAG_WSAVED_SHIFT 16 +#define TI_FLAG_BYTE_NOERROR 4 +#define TI_FLAG_BYTE_NOERROR_SHIFT 24 +#define TI_FLAG_BYTE_FPDEPTH 5 +#define TI_FLAG_FPDEPTH_SHIFT 16 +#define TI_FLAG_BYTE_WSAVED 6 +#define TI_FLAG_WSAVED_SHIFT 8 #include <asm/page.h> @@ -47,7 +49,7 @@ struct thread_info { struct exec_domain *exec_domain; int preempt_count; /* 0 => preemptable, <0 => BUG */ __u8 new_child; - __u8 syscall_noerror; + __u8 __pad; __u16 cpu; unsigned long *utraps; @@ -77,6 +79,7 @@ struct thread_info { #define TI_CURRENT_DS (TI_FLAGS + TI_FLAG_BYTE_CURRENT_DS) #define TI_FPDEPTH (TI_FLAGS + TI_FLAG_BYTE_FPDEPTH) #define TI_WSAVED (TI_FLAGS + TI_FLAG_BYTE_WSAVED) +#define TI_SYS_NOERROR (TI_FLAGS + TI_FLAG_BYTE_NOERROR) #define TI_FPSAVED 0x00000010 #define TI_KSP 0x00000018 #define TI_FAULT_ADDR 0x00000020 @@ -84,7 +87,6 @@ struct thread_info { #define TI_EXEC_DOMAIN 0x00000030 #define TI_PRE_COUNT 0x00000038 #define TI_NEW_CHILD 0x0000003c -#define TI_SYS_NOERROR 0x0000003d #define TI_CPU 0x0000003e #define TI_UTRAPS 0x00000040 #define TI_REG_WINDOW 0x00000048 @@ -155,6 +157,8 @@ register struct thread_info *current_thread_info_reg asm("g6"); #define set_thread_cwp(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP] = (val)) #define get_thread_current_ds() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS]) #define set_thread_current_ds(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS] = (val)) +#define get_thread_noerror() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR]) +#define set_thread_noerror(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR] = (val)) #define get_thread_fpdepth() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH]) #define set_thread_fpdepth(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH] = (val)) #define get_thread_wsaved() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED]) diff --git a/arch/sparc/kernel/etrap_64.S b/arch/sparc/kernel/etrap_64.S index 786b185e6e3f..1276ca2567ba 100644 --- a/arch/sparc/kernel/etrap_64.S +++ b/arch/sparc/kernel/etrap_64.S @@ -92,8 +92,10 @@ etrap_save: save %g2, -STACK_BIAS, %sp rdpr %wstate, %g2 wrpr %g0, 0, %canrestore sll %g2, 3, %g2 + + /* Set TI_SYS_FPDEPTH to 1 and clear TI_SYS_NOERROR. */ mov 1, %l5 - stb %l5, [%l6 + TI_FPDEPTH] + sth %l5, [%l6 + TI_SYS_NOERROR] wrpr %g3, 0, %otherwin wrpr %g2, 0, %wstate @@ -152,7 +154,9 @@ etrap_save: save %g2, -STACK_BIAS, %sp add %l6, TI_FPSAVED + 1, %l4 srl %l5, 1, %l3 add %l5, 2, %l5 - stb %l5, [%l6 + TI_FPDEPTH] + + /* Set TI_SYS_FPDEPTH to %l5 and clear TI_SYS_NOERROR. */ + sth %l5, [%l6 + TI_SYS_NOERROR] ba,pt %xcc, 2b stb %g0, [%l4 + %l3] nop diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S index 1d7e274f3f2b..ed277e2fdfc8 100644 --- a/arch/sparc/kernel/syscalls.S +++ b/arch/sparc/kernel/syscalls.S @@ -221,8 +221,8 @@ ret_sys_call: * was invoked. */ ldub [%g6 + TI_SYS_NOERROR], %l2 - brnz,a,pn %l2, 80f - stb %g0, [%g6 + TI_SYS_NOERROR] + brnz,pn %l2, 80f + nop cmp %o0, -ERESTART_RESTARTBLOCK bgeu,pn %xcc, 1f diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c index fa1f1d375ffc..82af591fe43f 100644 --- a/arch/sparc/kernel/traps_64.c +++ b/arch/sparc/kernel/traps_64.c @@ -2547,8 +2547,6 @@ void __init trap_init(void) TI_PRE_COUNT != offsetof(struct thread_info, preempt_count) || TI_NEW_CHILD != offsetof(struct thread_info, new_child) || - TI_SYS_NOERROR != offsetof(struct thread_info, - syscall_noerror) || TI_RESTART_BLOCK != offsetof(struct thread_info, restart_block) || TI_KUNA_REGS != offsetof(struct thread_info, |