diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S | 48 |
1 files changed, 38 insertions, 10 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S index 74f32f8f9..239090b20 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. +/* Copyright (C) 2003, 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 @@ -17,12 +17,11 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelrwlock.h> +#include <bits/kernel-features.h> #include "lowlevel-atomic.h" -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - .text @@ -86,7 +85,24 @@ __pthread_rwlock_unlock: bf 7f 8: - mov #FUTEX_WAKE, r5 +#ifdef __ASSUME_PRIVATE_FUTEX + mov #PSHARED, r0 + mov.b @(r0,r8), r5 + mov #(FUTEX_PRIVATE_FLAG|FUTEX_WAKE), r0 + xor r0, r5 + extu.b r5, r5 +#else + mov #PSHARED, r0 + mov.b @(r0,r8), r5 + extu.b r5, r5 + mov #FUTEX_WAKE, r0 + or r0, r5 + stc gbr, r1 + mov.w .Lpfoff, r2 + add r2, r1 + mov.l @r1, r0 + xor r0, r5 +#endif mov #SYS_futex, r3 mov #0, r7 extu.b r3, r3 @@ -118,10 +134,12 @@ __pthread_rwlock_unlock: #if MUTEX != 0 add #MUTEX, r5 #endif - mov r2, r4 + mov #PSHARED, r0 + mov.b @(r0,r8), r6 + extu.b r6, r6 mov.l .Lwait8, r1 bsrf r1 - nop + mov r2, r4 .Lwait8b: bra 2b nop @@ -130,6 +148,9 @@ __pthread_rwlock_unlock: #if MUTEX != 0 add #MUTEX, r4 #endif + mov #PSHARED, r0 + mov.b @(r0,r8), r5 + extu.b r5, r5 mov.l .Lwake8, r1 bsrf r1 nop @@ -144,6 +165,9 @@ __pthread_rwlock_unlock: #if MUTEX != 0 add #MUTEX, r4 #endif + mov #PSHARED, r0 + mov.b @(r0,r8), r5 + extu.b r5, r5 mov.l .Lwake9, r1 bsrf r1 nop @@ -153,13 +177,17 @@ __pthread_rwlock_unlock: bra 8b mov.l @r15+, r4 +#ifndef __ASSUME_PRIVATE_FUTEX +.Lpfoff: + .word PRIVATE_FUTEX - TLS_PRE_TCB_SIZE +#endif .align 2 .Lwait8: - .long __lll_mutex_lock_wait-.Lwait8b + .long __lll_lock_wait-.Lwait8b .Lwake8: - .long __lll_mutex_unlock_wake-.Lwake8b + .long __lll_unlock_wake-.Lwake8b .Lwake9: - .long __lll_mutex_unlock_wake-.Lwake9b + .long __lll_unlock_wake-.Lwake9b .size __pthread_rwlock_unlock,.-__pthread_rwlock_unlock .globl pthread_rwlock_unlock |