/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) 1999, 2003 Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
}
/***** Sun SPARC *****/
-#elif defined(HAVE_CPU_SPARC) && defined(__GNUC__) && 0
+#elif defined(HAVE_CPU_SPARC) && defined(__GNUC__)
GST_INLINE_FUNC void gst_atomic_int_destroy (GstAtomicInt *aint) { }
GST_INLINE_FUNC void
gst_atomic_int_add (GstAtomicInt *aint, gint val)
{
- register volatile int *ptr asm ("g1");
- register int increment asm ("g2");
-
- ptr = &aint->counter;
- increment = val;
-
- __asm__ __volatile__(
- "mov %%o7, %%g4\n\t"
- "call ___atomic_add\n\t"
- " add %%o7, 8, %%o7\n"
- : "=&r" (increment)
- : "0" (increment), "r" (ptr)
- : "g3", "g4", "g7", "memory", "cc");
+ volatile int increment, *ptr;
+ char lock;
+
+ ptr = &(aint->counter);
+
+ __asm__ __volatile__("1: ldstub [%[ptr] + 3], %[lock]\n"
+ "\torcc %[lock], 0, %%g0\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)
+ : "0" (increment), [ptr] "r" (ptr), [val] "r" (val)
+ );
}
GST_INLINE_FUNC void
GST_INLINE_FUNC gboolean
gst_atomic_int_dec_and_test (GstAtomicInt *aint)
{
- register volatile int *ptr asm ("g1");
- register int increment asm ("g2");
+ volatile int increment, *ptr;
+ char lock;
ptr = &aint->counter;
- increment = 1;
- __asm__ __volatile__(
- "mov %%o7, %%g4\n\t"
- "call ___atomic_sub\n\t"
- " add %%o7, 8, %%o7\n"
- : "=&r" (increment)
- : "0" (increment), "r" (ptr)
- : "g3", "g4", "g7", "memory", "cc");
+ __asm__ __volatile__("1: ldstub [%[ptr] + 3], %[lock]\n"
+ "\torcc %[lock], 0, %%g0\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)
+ : "0" (increment), [ptr] "r" (ptr)
+ );
return increment == 0;
}