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* Wrap x86 asm in defines

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42410 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Alexander von Gluck IV 2011-07-11 18:05:46 +00:00
parent 414b6dd98e
commit 70d8929d63
1 changed files with 3 additions and 0 deletions
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src/add-ons/accelerants/radeon/CP.c
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@ -329,7 +329,10 @@ void Radeon_SendIndirectBuffer( accelerator_info *ai,
// flush writes to CP buffers
// (this code is a bit of a overkill - currently, only some WinChip/Cyrix
// CPU's support out-of-order writes, but we are prepared)
// TODO : Other Architectures? PowerPC?
#if defined(__x86__) || defined(__x86_64__)
__asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory");
#endif
// make sure the motherboard chipset has flushed its write buffer by
// reading some uncached memory
//(void)*(volatile int *)si->framebuffer;