diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S | 78 |
1 files changed, 59 insertions, 19 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S b/nptl/sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S index c57d3cff18..0ebfbfe8c9 100644 --- a/nptl/sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S +++ b/nptl/sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S @@ -1,4 +1,5 @@ -/* Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc. +/* Copyright (C) 2003, 2004, 2005, 2006, 2007 + Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -18,31 +19,64 @@ #include <sysdep.h> #include <pthread-errnos.h> +#include <lowlevellock.h> #include <lowlevelrobustlock.h> +#include <kernel-features.h> #include "lowlevel-atomic.h" .text -#define SYS_gettimeofday __NR_gettimeofday -#define SYS_futex 240 -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 #define FUTEX_WAITERS 0x80000000 #define FUTEX_OWNER_DIED 0x40000000 +#ifdef __ASSUME_PRIVATE_FUTEX +# define LOAD_FUTEX_WAIT(reg,tmp,tmp2) \ + mov #(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), tmp; \ + extu.b tmp, tmp; \ + xor tmp, reg +#else +# if FUTEX_WAIT == 0 +# define LOAD_FUTEX_WAIT(reg,tmp,tmp2) \ + stc gbr, tmp ; \ + mov.w 99f, tmp2 ; \ + add tmp2, tmp ; \ + mov.l @tmp, tmp2 ; \ + bra 98f ; \ + mov #FUTEX_PRIVATE_FLAG, tmp +99: .word PRIVATE_FUTEX - TLS_PRE_TCB_SIZE ; \ +98: extu.b tmp, tmp ; \ + xor tmp, reg ; \ + and tmp2, reg +# else +# define LOAD_FUTEX_WAIT(reg,tmp,tmp2) \ + stc gbr, tmp ; \ + mov.w 99f, tmp2 ; \ + add tmp2, tmp ; \ + mov.l @tmp, tmp2 ; \ + bra 98f ; \ + mov #FUTEX_PRIVATE_FLAG, tmp +99: .word PRIVATE_FUTEX - TLS_PRE_TCB_SIZE ; \ +98: extu.b tmp, tmp ; \ + xor tmp, reg ; \ + and tmp2, reg ; \ + mov #FUTEX_WAIT, tmp ; \ + or tmp, reg +# endif +#endif - .globl __lll_robust_mutex_lock_wait - .type __lll_robust_mutex_lock_wait,@function - .hidden __lll_robust_mutex_lock_wait + .globl __lll_robust_lock_wait + .type __lll_robust_lock_wait,@function + .hidden __lll_robust_lock_wait .align 5 cfi_startproc -__lll_robust_mutex_lock_wait: +__lll_robust_lock_wait: mov.l r8, @-r15 cfi_adjust_cfa_offset(4) cfi_rel_offset (r8, 0) mov r5, r8 mov #0, r7 /* No timeout. */ - mov #FUTEX_WAIT, r5 + mov r6, r5 + LOAD_FUTEX_WAIT (r5, r0, r1) 4: mov r4, r6 @@ -90,21 +124,24 @@ __lll_robust_mutex_lock_wait: .long FUTEX_WAITERS .Ltidoff: .word TID - TLS_PRE_TCB_SIZE - .size __lll_robust_mutex_lock_wait,.-__lll_robust_mutex_lock_wait + .size __lll_robust_lock_wait,.-__lll_robust_lock_wait - .globl __lll_robust_mutex_timedlock_wait - .type __lll_robust_mutex_timedlock_wait,@function - .hidden __lll_robust_mutex_timedlock_wait + .globl __lll_robust_timedlock_wait + .type __lll_robust_timedlock_wait,@function + .hidden __lll_robust_timedlock_wait .align 5 cfi_startproc -__lll_robust_mutex_timedlock_wait: +__lll_robust_timedlock_wait: /* Check for a valid timeout value. */ mov.l @(4,r6), r1 mov.l .L1g, r0 cmp/hs r0, r1 bt 3f + mov.l r11, @-r15 + cfi_adjust_cfa_offset(4) + cfi_rel_offset (r11, 0) mov.l r10, @-r15 cfi_adjust_cfa_offset(4) cfi_rel_offset (r10, 0) @@ -114,6 +151,7 @@ __lll_robust_mutex_timedlock_wait: mov.l r8, @-r15 cfi_adjust_cfa_offset(4) cfi_rel_offset (r8, 0) + mov r7, r11 mov r4, r10 mov r6, r9 mov r5, r8 @@ -126,7 +164,7 @@ __lll_robust_mutex_timedlock_wait: /* Get current time. */ mov r15, r4 mov #0, r5 - mov #SYS_gettimeofday, r3 + mov #__NR_gettimeofday, r3 trapa #0x12 SYSCALL_INST_PAD @@ -167,7 +205,8 @@ __lll_robust_mutex_timedlock_wait: 2: mov r8, r4 - mov #FUTEX_WAIT, r5 + mov r11, r5 + LOAD_FUTEX_WAIT (r5, r0, r1) mov r10, r6 mov r15, r7 mov #SYS_futex, r3 @@ -196,8 +235,9 @@ __lll_robust_mutex_timedlock_wait: add #8, r15 mov.l @r15+, r8 mov.l @r15+, r9 + mov.l @r15+, r10 rts - mov.l @r15+, r10 + mov.l @r15+, r11 7: /* Check whether the time expired. */ @@ -221,4 +261,4 @@ __lll_robust_mutex_timedlock_wait: .word TID - TLS_PRE_TCB_SIZE .L1k: .word 1000 - .size __lll_robust_mutex_timedlock_wait,.-__lll_robust_mutex_timedlock_wait + .size __lll_robust_timedlock_wait,.-__lll_robust_timedlock_wait |