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Fix atomic sparc code (#113280)

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Original commit message from CVS:
Fix atomic sparc code (#113280)
This commit is contained in:
Ronald S. Bultje 2003-08-03 20:52:19 +00:00
parent 991cac5e96
commit a3705d33ef
2 changed files with 39 additions and 8 deletions
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2
common

@ -1 +1 @@
Subproject commit d6e219fd076d8f182bd1ee84228b1b85cdb807a6
Subproject commit 6b0a313b93535f0df7956a01405ddb63a3d76b5a

45
gst/gstatomic_impl.h
View file

@ -206,7 +206,6 @@ gst_atomic_int_dec_and_test (GstAtomicInt *aint)
}
/***** Sun SPARC *****/
/* disabled for now */
#elif defined(HAVE_CPU_SPARC) && defined(__GNUC__)
GST_INLINE_FUNC void gst_atomic_int_destroy (GstAtomicInt *aint) { }
@ -245,21 +244,37 @@ GST_INLINE_FUNC void
gst_atomic_int_add (GstAtomicInt *aint, gint val)
{
volatile int increment, *ptr;
char lock;
int lock = 1;
int ignore = 0;
ptr = &(aint->counter);
#if __GNUC__ > 3 || (__GNUC__ >=3 && __GNUC_MINOR__ >= 2)
__asm__ __volatile__("1: ldstub [%[ptr] + 3], %[lock]\n"
"\torcc %[lock], 0, %%g0\n"
"\torcc %[lock], 0, %[ignore]\n"
"\tbne 1b\n" /* go back until we have the lock */
"\tld [%[ptr]], %[inc]\n"
"\tsra %[inc], 8, %[inc]\n"
"\tadd %[inc], %[val], %[inc]\n"
"\tsll %[inc], 8, %[lock]\n"
"\tst %[lock],[%[ptr]]\n" /* Release the lock */
: [inc] "=&r" (increment), [lock] "=r" (lock)
: [inc] "=&r" (increment), [lock] "=r" (lock),
[ignore] "=&r" (ignore)
: "0" (increment), [ptr] "r" (ptr), [val] "r" (val)
);
#else
__asm__ __volatile__("1: ldstub [%4 + 3], %1\n"
"\torcc %1, 0, %2\n"
"\tbne 1b\n" /* go back until we have the lock */
"\tld [%4], %0\n"
"\tsra %0, 8, %0\n"
"\tadd %0, %5, %0\n"
"\tsll %0, 8, %1\n"
"\tst %1,[%4]\n" /* Release the lock */
: "=&r" (increment), "=r" (lock), "=&r" (ignore)
: "0" (increment), "r" (ptr), "r" (val)
);
#endif
}
GST_INLINE_FUNC void
@ -272,21 +287,37 @@ GST_INLINE_FUNC gboolean
gst_atomic_int_dec_and_test (GstAtomicInt *aint)
{
volatile int increment, *ptr;
char lock;
int lock = 1;
int ignore = 0;
ptr = &aint->counter;
#if __GNUC__ > 3 || (__GNUC__ >=3 && __GNUC_MINOR__ >= 2)
__asm__ __volatile__("1: ldstub [%[ptr] + 3], %[lock]\n"
"\torcc %[lock], 0, %%g0\n"
"\torcc %[lock], 0, %[ignore]\n"
"\tbne 1b\n" /* go back until we have the lock */
"\tld [%[ptr]], %[inc]\n"
"\tsra %[inc], 8, %[inc]\n"
"\tsub %[inc], 1, %[inc]\n"
"\tsll %[inc], 8, %[lock]\n"
"\tst %[lock],[%[ptr]]\n" /* Release the lock */
: [inc] "=&r" (increment), [lock] "=r" (lock)
: [inc] "=&r" (increment), [lock] "=r" (lock),
[ignore] "=&r" (ignore)
: "0" (increment), [ptr] "r" (ptr)
);
#else
__asm__ __volatile__("1: ldstub [%4 + 3], %1\n"
"\torcc %1, 0, %2\n"
"\tbne 1b\n" /* go back until we have the lock */
"\tld [%4], %0\n"
"\tsra %0, 8, %0\n"
"\tsub %0, 1, %0\n"
"\tsll %0, 8, %1\n"
"\tst %1,[%4]\n" /* Release the lock */
: "=&r" (increment), "=r" (lock), "=&r" (ignore)
: "0" (increment), "r" (ptr)
);
#endif
return increment == 0;
}