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Added PowerPC and ARM versions of the memory barrier functions.

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This commit is contained in:
Sam Lantinga 2013-07-10 20:17:20 -07:00
parent 557bbf3fe6
commit f80a6e7ee5
2 changed files with 37 additions and 3 deletions
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14
src/atomic/SDL_atomic.c
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@ -101,4 +101,18 @@ SDL_AtomicCASPtr(void **a, void *oldval, void *newval)
return retval;
}
#if defined(__GNUC__) && defined(__arm__) && \
(defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__))
__asm__(
" .align 2\n"
" .globl _SDL_MemoryBarrierRelease\n"
" .globl _SDL_MemoryBarrierAcquire\n"
"_SDL_MemoryBarrierRelease:\n"
"_SDL_MemoryBarrierAcquire:\n"
" mov r0, #0\n"
" mcr p15, 0, r0, c7, c10, 5\n"
" bx lr\n"
);
#endif /* __GNUC__ && __arm__ && ARMV6 */
/* vi: set ts=4 sw=4 expandtab: */