diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S | 49 |
1 files changed, 37 insertions, 12 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S index 608c7364c..4a6059aef 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2003, 2004, 2007, 2008 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 @@ -17,13 +17,10 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelbarrier.h> #include "lowlevel-atomic.h" -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - - .text .globl pthread_barrier_wait @@ -64,7 +61,13 @@ pthread_barrier_wait: #if CURR_EVENT != 0 add #CURR_EVENT, r4 #endif +#if FUTEX_WAIT == 0 + mov.l @(PRIVATE,r8), r5 +#else mov #FUTEX_WAIT, r5 + mov.l @(PRIVATE,r8), r0 + or r0, r5 +#endif mov #0, r7 8: mov #SYS_futex, r3 @@ -81,8 +84,10 @@ pthread_barrier_wait: /* Increment LEFT. If this brings the count back to the initial count unlock the object. */ - INC (@(LEFT,r8), r2) + mov #1, r3 mov.l @(INIT_COUNT,r8), r4 + XADD (r3, @(LEFT,r8), r2, r5) + add #-1, r4 cmp/eq r2, r4 bf 10f @@ -115,6 +120,8 @@ pthread_barrier_wait: #endif mov #0, r7 mov #FUTEX_WAKE, r5 + mov.l @(PRIVATE,r8), r0 + or r0, r5 mov #SYS_futex, r3 extu.b r3, r3 trapa #0x14 @@ -122,8 +129,10 @@ pthread_barrier_wait: /* Increment LEFT. If this brings the count back to the initial count unlock the object. */ - INC (@(LEFT,r8), r2) + mov #1, r3 mov.l @(INIT_COUNT,r8), r4 + XADD (r3, @(LEFT,r8), r2, r5) + add #-1, r4 cmp/eq r2, r4 bf 5f @@ -139,6 +148,10 @@ pthread_barrier_wait: mov.l @r15+, r9 1: + mov.l @(PRIVATE,r8), r6 + mov #LLL_SHARED, r0 + extu.b r0, r0 + xor r0, r6 mov r2, r4 mov r8, r5 mov.l .Lwait0, r1 @@ -149,6 +162,10 @@ pthread_barrier_wait: nop 4: + mov.l @(PRIVATE,r8), r5 + mov #LLL_SHARED, r0 + extu.b r0, r0 + xor r0, r5 mov r8, r4 mov.l .Lwake0, r1 bsrf r1 @@ -159,6 +176,10 @@ pthread_barrier_wait: 6: mov r6, r9 + mov.l @(PRIVATE,r8), r5 + mov #LLL_SHARED, r0 + extu.b r0, r0 + xor r0, r5 mov r8, r4 mov.l .Lwake1, r1 bsrf r1 @@ -167,8 +188,12 @@ pthread_barrier_wait: bra 7b mov r9, r6 -9: +9: mov r6, r9 + mov.l @(PRIVATE,r8), r5 + mov #LLL_SHARED, r0 + extu.b r0, r0 + xor r0, r5 mov r8, r4 mov.l .Lwake2, r1 bsrf r1 @@ -181,11 +206,11 @@ pthread_barrier_wait: .Lall: .long 0x7fffffff .Lwait0: - .long __lll_mutex_lock_wait-.Lwait0b + .long __lll_lock_wait-.Lwait0b .Lwake0: - .long __lll_mutex_unlock_wake-.Lwake0b + .long __lll_unlock_wake-.Lwake0b .Lwake1: - .long __lll_mutex_unlock_wake-.Lwake1b + .long __lll_unlock_wake-.Lwake1b .Lwake2: - .long __lll_mutex_unlock_wake-.Lwake2b + .long __lll_unlock_wake-.Lwake2b .size pthread_barrier_wait,.-pthread_barrier_wait |