+2020-07-03 Bruno Haible <bruno@clisp.org>
+
+ asyncsafe-spin: Use GCC extended asm syntax for SunStudio 12 compiler.
+ * lib/asyncsafe-spin.c (memory_barrier, atomic_compare_and_swap): Use
+ the GCC extended asm syntax also for the Sun Studio 12 compilers.
+
2020-07-03 Bruno Haible <bruno@clisp.org>
asyncsafe-spin: Reduce code duplication.
- * lib/asyncsafe-spin.c: (do_lock, do_unlock): New functions.
+ * lib/asyncsafe-spin.c (do_lock, do_unlock): New functions.
(asyncsafe_spin_lock, asyncsafe_spin_unlock): Use them.
* modules/asyncsafe-spin (configure.ac): Require AC_C_INLINE.
# elif (defined __GNUC__ || defined __SUNPRO_C) && (defined __sparc || defined __i386 || defined __x86_64__)
/* For older versions of GCC, use inline assembly.
- GCC and the Oracle Studio C compiler understand GCC's extended asm syntax,
- but the plain Solaris cc understands only simple asm. */
+ GCC and the Oracle Studio C 12 compiler understand GCC's extended asm syntax,
+ but the plain Oracle Studio C 11 compiler understands only simple asm. */
/* An implementation that verifies the unlocks. */
static void
memory_barrier (void)
{
-# if defined __GNUC__
+# if defined __GNUC__ || __SUNPRO_C >= 0x590
# if defined __i386 || defined __x86_64__
asm volatile ("mfence");
# endif
atomic_compare_and_swap (volatile unsigned int *vp, unsigned int cmp,
unsigned int newval)
{
-# if defined __GNUC__
+# if defined __GNUC__ || __SUNPRO_C >= 0x590
unsigned int oldval;
# if defined __i386 || defined __x86_64__
asm volatile (" lock\n cmpxchgl %3,(%1)"