diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S | 58 |
1 files changed, 45 insertions, 13 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S index d071f7f03..3d37fb486 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.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 @@ -17,14 +17,13 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelrwlock.h> #include <pthread-errnos.h> #include <tcb-offsets.h> +#include <bits/kernel-features.h> #include "lowlevel-atomic.h" -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - .text @@ -73,7 +72,26 @@ __pthread_rwlock_wrlock: 11: mov r8, r4 add #WRITERS_WAKEUP, r4 - mov #FUTEX_WAIT, r5 +#ifdef __ASSUME_PRIVATE_FUTEX + mov #PSHARED, r0 + mov.b @(r0,r8), r5 + mov #(FUTEX_PRIVATE_FLAG|FUTEX_WAIT), r0 + xor r0, r5 + extu.b r5, r5 +#else + mov #PSHARED, r0 + mov.b @(r0,r8), r5 + extu.b r5, r5 +# if FUTEX_WAIT != 0 + mov #FUTEX_WAIT, r0 + or r0, r5 +# endif + stc gbr, r1 + mov.w .Lpfoff, r2 + add r2, r1 + mov.l @r1, r0 + xor r0, r5 +#endif mov r9, r6 mov #0, r7 mov #SYS_futex, r3 @@ -123,10 +141,12 @@ __pthread_rwlock_wrlock: #if MUTEX != 0 add #MUTEX, r5 #endif - mov r2, r4 + mov #PSHARED, r0 + mov.b @(r0,r8), r6 + extu.b r6, r6 mov.l .Lwait4, r1 bsrf r1 - nop + mov r2, r4 .Lwait4b: bra 2b nop @@ -144,6 +164,9 @@ __pthread_rwlock_wrlock: #if MUTEX != 0 add #MUTEX, r4 #endif + mov #PSHARED, r0 + mov.b @(r0,r8), r5 + extu.b r5, r5 mov.l .Lwake4, r1 bsrf r1 nop @@ -151,6 +174,10 @@ __pthread_rwlock_wrlock: bra 7b mov #0, r3 +#ifndef __ASSUME_PRIVATE_FUTEX +.Lpfoff: + .word PRIVATE_FUTEX - TLS_PRE_TCB_SIZE +#endif .Ltidoff: .word TID - TLS_PRE_TCB_SIZE @@ -166,6 +193,9 @@ __pthread_rwlock_wrlock: #if MUTEX != 0 add #MUTEX, r4 #endif + mov #PSHARED, r0 + mov.b @(r0,r8), r5 + extu.b r5, r5 mov.l .Lwake5, r1 bsrf r1 nop @@ -178,23 +208,25 @@ __pthread_rwlock_wrlock: #if MUTEX != 0 add #MUTEX, r5 #endif - mov r2, r4 + mov #PSHARED, r0 + mov.b @(r0,r8), r6 + extu.b r6, r6 mov.l .Lwait5, r1 bsrf r1 - nop + mov r2, r4 .Lwait5b: bra 13b nop .align 2 .Lwait4: - .long __lll_mutex_lock_wait-.Lwait4b + .long __lll_lock_wait-.Lwait4b .Lwake4: - .long __lll_mutex_unlock_wake-.Lwake4b + .long __lll_unlock_wake-.Lwake4b .Lwait5: - .long __lll_mutex_lock_wait-.Lwait5b + .long __lll_lock_wait-.Lwait5b .Lwake5: - .long __lll_mutex_unlock_wake-.Lwake5b + .long __lll_unlock_wake-.Lwake5b .globl pthread_rwlock_wrlock pthread_rwlock_wrlock = __pthread_rwlock_wrlock |