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Add support for icache invalidation on non-darwin ppc systems.

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Patch by Gary Benson!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52332 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-06-16 17:04:06 +00:00
parent 1fbb4545d4
commit 16228c08b4
1 changed files with 19 additions and 2 deletions
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21
lib/Target/PowerPC/PPCJITInfo.cpp
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@ -333,9 +333,26 @@ extern "C" void sys_icache_invalidate(const void *Addr, size_t len);
/// SyncICache - On PPC, the JIT emitted code must be explicitly refetched to
/// ensure correct execution.
static void SyncICache(const void *Addr, size_t len) {
#if (defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)) && \
defined(__APPLE__)
#if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)
#ifdef __APPLE__
sys_icache_invalidate(Addr, len);
#elif defined(__GNUC__)
const size_t LineSize = 32;
const intptr_t Mask = ~(LineSize - 1);
const intptr_t StartLine = ((intptr_t) Addr) & Mask;
const intptr_t EndLine = ((intptr_t) Addr + len + LineSize - 1) & Mask;
for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
asm volatile("dcbf 0, %0" : : "r"(Line));
asm volatile("sync");
for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
asm volatile("icbi 0, %0" : : "r"(Line));
asm volatile("isync");
#endif
#endif
}