diff options
Diffstat (limited to 'arch/sparc/kernel')
-rw-r--r-- | arch/sparc/kernel/etrap_64.S | 8 | ||||
-rw-r--r-- | arch/sparc/kernel/syscalls.S | 31 | ||||
-rw-r--r-- | arch/sparc/kernel/traps_64.c | 2 |
3 files changed, 22 insertions, 19 deletions
diff --git a/arch/sparc/kernel/etrap_64.S b/arch/sparc/kernel/etrap_64.S index 1276ca2567ba..786b185e6e3f 100644 --- a/arch/sparc/kernel/etrap_64.S +++ b/arch/sparc/kernel/etrap_64.S @@ -92,10 +92,8 @@ 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 - sth %l5, [%l6 + TI_SYS_NOERROR] + stb %l5, [%l6 + TI_FPDEPTH] wrpr %g3, 0, %otherwin wrpr %g2, 0, %wstate @@ -154,9 +152,7 @@ etrap_save: save %g2, -STACK_BIAS, %sp add %l6, TI_FPSAVED + 1, %l4 srl %l5, 1, %l3 add %l5, 2, %l5 - - /* Set TI_SYS_FPDEPTH to %l5 and clear TI_SYS_NOERROR. */ - sth %l5, [%l6 + TI_SYS_NOERROR] + stb %l5, [%l6 + TI_FPDEPTH] ba,pt %xcc, 2b stb %g0, [%l4 + %l3] nop diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S index b0ac10306425..1d7e274f3f2b 100644 --- a/arch/sparc/kernel/syscalls.S +++ b/arch/sparc/kernel/syscalls.S @@ -212,19 +212,24 @@ linux_sparc_syscall: 3: stx %o0, [%sp + PTREGS_OFF + PT_V9_I0] ret_sys_call: ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %g3 + ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc sra %o0, 0, %o0 mov %ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2 sllx %g2, 32, %g2 + /* Check if force_successful_syscall_return() + * was invoked. + */ + ldub [%g6 + TI_SYS_NOERROR], %l2 + brnz,a,pn %l2, 80f + stb %g0, [%g6 + TI_SYS_NOERROR] + cmp %o0, -ERESTART_RESTARTBLOCK bgeu,pn %xcc, 1f - andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 - ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc - -2: + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6 +80: /* System call success, clear Carry condition code. */ andn %g3, %g2, %g3 -3: stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE] bne,pn %icc, linux_syscall_trace2 add %l1, 0x4, %l2 ! npc = npc+4 @@ -233,20 +238,20 @@ ret_sys_call: stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC] 1: - /* Check if force_successful_syscall_return() - * was invoked. - */ - ldub [%g6 + TI_SYS_NOERROR], %l2 - brnz,pn %l2, 2b - ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc /* System call failure, set Carry condition code. * Also, get abs(errno) to return to the process. */ + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6 sub %g0, %o0, %o0 + or %g3, %g2, %g3 stx %o0, [%sp + PTREGS_OFF + PT_V9_I0] - ba,pt %xcc, 3b - or %g3, %g2, %g3 + stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE] + bne,pn %icc, linux_syscall_trace2 + add %l1, 0x4, %l2 ! npc = npc+4 + stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC] + b,pt %xcc, rtrap + stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC] linux_syscall_trace2: call syscall_trace_leave add %sp, PTREGS_OFF, %o0 diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c index 82af591fe43f..fa1f1d375ffc 100644 --- a/arch/sparc/kernel/traps_64.c +++ b/arch/sparc/kernel/traps_64.c @@ -2547,6 +2547,8 @@ 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, |