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* Source/NSObject.m: Correct asm for PPC.

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Patch by Eric Wasylishen <ewasylishen@gmail.com>
* Source/NSObject.m: Add support for new gcc atomic build
ins. Currently still disabled.
Patch by David Chisnall <theraven@sucs.org>

M    Source/NSObject.m
M    ChangeLog


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@28268 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Fred Kiefer 2009-05-04 20:07:56 +00:00
parent 9d4757988c
commit d2b68390e5
2 changed files with 23 additions and 6 deletions
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17
Source/NSObject.m
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@ -219,6 +219,15 @@ typedef int32_t volatile *gsatomic_t;
#define GSAtomicDecrement(X) InterlockedDecrement((LONG volatile*)X)
#elif defined(USE_ATOMIC_BUILDINS) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1))
/* Use the GCC atomic operations with recent GCC versions */
typedef int32_t volatile *gsatomic_t;
#define GSATOMICREAD(X) (*(X))
#define GSAtomicIncrement(X) __sync_fetch_and_add(X, 1)
#define GSAtomicDecrement(X) __sync_fetch_and_sub(X, 1)
#elif defined(__linux__) && (defined(__i386__) || defined(__x86_64__))
/* Set up atomic read, increment and decrement for intel style linux
*/
@ -256,11 +265,11 @@ GSAtomicIncrement(gsatomic_t X)
{
int tmp;
__asm__ __volatile__ (
"modified:"
"incmodified:"
"lwarx %0,0,%1 \n"
"addic %0,%0,1 \n"
"stwcx. %0,0,%1 \n"
"bne- modified \n"
"bne- incmodified \n"
:"=&r" (tmp)
:"r" (X)
:"cc", "memory");
@ -272,11 +281,11 @@ GSAtomicDecrement(gsatomic_t X)
{
int tmp;
__asm__ __volatile__ (
"modified:"
"decmodified:"
"lwarx %0,0,%1 \n"
"addic %0,%0,-1 \n"
"stwcx. %0,0,%1 \n"
"bne- modified \n"
"bne- decmodified \n"
:"=&r" (tmp)
:"r" (X)
:"cc", "memory");