Displaying 5 results from an estimated 5 matches for "sys_icache_invalid".
2008 Jun 16
0
[LLVMdev] PowerPC instruction cache invalidation
On Mon, 16 Jun 2008, Gary Benson wrote:
> When you genetate code on PowerPC you need to explicitly invalidate
> the instruction cache to force the processor to reread it. In LLVM
> there is code to do this for function stubs on Macintosh, but not
> for other platforms and not for JITted code generally.
Applied, thanks!
2008 Jun 17
1
[LLVMdev] PowerPC instruction cache invalidation
...er.cpp
===================================================================
--- lib/Target/PowerPC/PPCCodeEmitter.cpp (revision 52391)
+++ lib/Target/PowerPC/PPCCodeEmitter.cpp (working copy)
@@ -80,10 +80,6 @@
return new PPCCodeEmitter(TM, MCE);
}
-#ifdef __APPLE__
-extern "C" void sys_icache_invalidate(const void *Addr, size_t len);
-#endif
-
bool PPCCodeEmitter::runOnMachineFunction(MachineFunction &MF) {
assert((MF.getTarget().getRelocationModel() != Reloc::Default ||
MF.getTarget().getRelocationModel() != Reloc::Static) &&
Index: lib/Target/PowerPC/PPCJITInfo.h
==...
2008 Jun 16
6
[LLVMdev] PowerPC instruction cache invalidation
.../gbenson.net/
-------------- next part --------------
--- lib/Target/PowerPC/PPCJITInfo.cpp.orig 2008-06-11 07:12:39
+++ lib/Target/PowerPC/PPCJITInfo.cpp 2008-06-16 08:42:25
@@ -336,6 +336,20 @@
#if (defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)) && \
defined(__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 &...
2010 Mar 07
0
[LLVMdev] llvm and flushing instruction cache
On Sat, Mar 6, 2010 at 10:34 PM, Shasank Chavan
<shanko_chavano at hotmail.com> wrote:
> Hi. I have a very quick question. Is the instruction cache flushed by the
> llvm jit before code in memory is written to or executed? I'm assuming so,
> but I can't find where in the source code this is happening. In particular
> I searched for clflush, invd, and wbinvd
2010 Mar 07
4
[LLVMdev] llvm and flushing instruction cache
Hi. I have a very quick question. Is the instruction cache flushed by the llvm jit before code in memory is written to or executed? I'm assuming so, but I can't find where in the source code this is happening. In particular I searched for clflush, invd, and wbinvd instructions, but couldn't find them. And if it's not necessary to do this, can you please explain why? (I'm