diff options
| author | Dale Rahn <drahn@cvs.openbsd.org> | 2020-06-25 02:22:32 +0000 |
|---|---|---|
| committer | Dale Rahn <drahn@cvs.openbsd.org> | 2020-06-25 02:22:32 +0000 |
| commit | dfb9ba85deca2ab0393f1c18b3840b5b523ebb48 (patch) | |
| tree | d8c3ff84a91ca1b782923baa836e3f1d2e206c42 /lib | |
| parent | f7796cef2bb42fee344b534619580aa9b69f21ef (diff) | |
Committed wrong version of file, atomic_lock is 32 bit.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/arch/powerpc64/gen/_atomic_lock.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/lib/libc/arch/powerpc64/gen/_atomic_lock.c b/lib/libc/arch/powerpc64/gen/_atomic_lock.c index 56faf2a61df..6843365cd05 100644 --- a/lib/libc/arch/powerpc64/gen/_atomic_lock.c +++ b/lib/libc/arch/powerpc64/gen/_atomic_lock.c @@ -1,4 +1,4 @@ -/* $OpenBSD: _atomic_lock.c,v 1.1 2020/06/25 02:03:55 drahn Exp $ */ +/* $OpenBSD: _atomic_lock.c,v 1.2 2020/06/25 02:22:31 drahn Exp $ */ /* * Copyright (c) 1998 Dale Rahn <drahn@openbsd.org> * @@ -26,8 +26,8 @@ _atomic_lock(volatile _atomic_lock_t *lock) { _atomic_lock_t old; - __asm__("1: ldarx 0,0,%1 \n" - " stdcx. %2,0,%1 \n" + __asm__("1: lwarx 0,0,%1 \n" + " stwcx. %2,0,%1 \n" " bne- 1b \n" " mr %0, 0 \n" : "=r" (old), "=r" (lock) @@ -39,9 +39,9 @@ _atomic_lock(volatile _atomic_lock_t *lock) /* * Dale <drahn@openbsd.org> says: * Side note. to prevent two processes from accessing - * the same address with the ldarx in one instruction - * and the stdcx in another process, the current powerpc - * kernel uses a stdcx instruction without the corresponding + * the same address with the lwarx in one instruction + * and the stwcx in another process, the current powerpc + * kernel uses a stwcx instruction without the corresponding * lwarx which causes any reservation of a process * to be removed. if a context switch occurs * between the two accesses the store will not occur |