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Add __volatile keyword.

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This commit is contained in:
David Xu 2003-09-26 11:59:04 +00:00
parent 3a6a55a60b
commit 90c6d14eb1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=120469
1 changed files with 4 additions and 2 deletions
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6
lib/libpthread/arch/alpha/include/atomic_ops.h
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@ -39,7 +39,8 @@ static inline void
atomic_swap_long(long *dst, long val, long *res)
{
/* $1 and $2 are t0 and t1 respectively. */
__asm ( " ldq $1, %1\n" /* get cache line before lock */
__asm __volatile (
" ldq $1, %1\n" /* get cache line before lock */
"1: ldq_l $1, %1\n" /* load *dst asserting lock */
" mov %2, $2\n" /* save value to be swapped */
" stq_c $2, %1\n" /* attempt the store; $2 clobbered */
@ -55,7 +56,8 @@ static inline void
atomic_swap_int(int *dst, int val, int *res)
{
/* $1 and $2 are t0 and t1 respectively. */
__asm ( " ldl $1, %1\n" /* get cache line before lock */
__asm __volatile (
" ldl $1, %1\n" /* get cache line before lock */
"1: ldl_l $1, %1\n" /* load *dst asserting lock */
" mov %2, $2\n" /* save value to be swapped */
" stl_c $2, %1\n" /* attempt the store; $2 clobbered */