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Tweak atomic inc/dec code

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@33116 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-MacDonald 2011-05-25 16:47:11 +00:00
parent eb39994378
commit ac2b43669d
1 changed files with 8 additions and 3 deletions
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11
Source/NSObject.m
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@ -226,12 +226,15 @@ typedef int32_t volatile *gsatomic_t;
#define GSATOMICREAD(X) (*(X))
#ifdef ATOMICTEST
#define ATOMIC_TESTING 1
#if defined(ATOMIC_TESTING)
static __inline__ int
GSAtomicIncrement(gsatomic_t X)
{
int32_t tmp = 1;
register int tmp;
__asm__ __volatile__ (
"movl $1, %0\n\t"
"lock xaddl %0, %1"
:"=r" (tmp), "=m" (*X)
:"r" (tmp), "m" (*X)
@ -242,8 +245,10 @@ GSAtomicIncrement(gsatomic_t X)
static __inline__ int
GSAtomicDecrement(gsatomic_t X)
{
int32_t tmp = -1;
register int tmp;
__asm__ __volatile__ (
"movl $1, %0\n\t"
"negl %0\n\t"
"lock xaddl %0, %1"
:"=r" (tmp), "=m" (*X)
:"r" (tmp), "m" (*X)