6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-10-20 09:24:58 +00:00
Code Issues Projects Releases Wiki Activity

Provide generic hooks for icache invalidation. Add PPC implementation.

Browse Source 
Patch by Gary Benson!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52418 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2008-06-17 17:30:05 +00:00
parent fc329f4fa1
commit 210539ebc4
5 changed files with 16 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/llvm/Target/TargetJITInfo.h
View File

@ -94,6 +94,11 @@ namespace llvm {
assert(NumRelocs == 0 && "This target does not have relocations!");
}
/// InvalidateInstructionCache - Before the JIT can run a block of code
// that has been emitted it must invalidate the instruction cache on some
// platforms.
virtual void InvalidateInstructionCache(const void *Addr, unsigned len) {}
/// needsGOT - Allows a target to specify that it would like the
// JIT to manage a GOT for it.
bool needsGOT() const { return useGOT; }

16
lib/ExecutionEngine/JIT/JITEmitter.cpp
View File

@ -145,20 +145,6 @@ namespace {
JITResolver *JITResolver::TheJITResolver = 0;
#if (defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)) && \
defined(__APPLE__)
extern "C" void sys_icache_invalidate(const void *Addr, size_t len);
#endif
/// synchronizeICache - On some targets, the JIT emitted code must be
/// explicitly refetched to ensure correct execution.
static void synchronizeICache(const void *Addr, size_t len) {
#if (defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)) && \
defined(__APPLE__)
sys_icache_invalidate(Addr, len);
#endif
}
/// getFunctionStub - This returns a pointer to a function stub, creating
/// one on demand as needed.
void *JITResolver::getFunctionStub(Function *F) {
@ -756,7 +742,7 @@ bool JITEmitter::finishFunction(MachineFunction &F) {
}
// Invalidate the icache if necessary.
synchronizeICache(FnStart, FnEnd-FnStart);
TheJIT->getJITInfo().InvalidateInstructionCache(FnStart, FnEnd-FnStart);
// Add it to the JIT symbol table if the host wants it.
AddFunctionToSymbolTable(F.getFunction()->getNameStart(),

4
lib/Target/PowerPC/PPCCodeEmitter.cpp
View File

@ -80,10 +80,6 @@ FunctionPass *llvm::createPPCCodeEmitterPass(PPCTargetMachine &TM,
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) &&

15
lib/Target/PowerPC/PPCJITInfo.cpp
View File

@ -330,12 +330,9 @@ defined(__APPLE__)
extern "C" void sys_icache_invalidate(const void *Addr, size_t len);
#endif
/// 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)
#ifdef __APPLE__
void PPCJITInfo::InvalidateInstructionCache(const void *Addr, unsigned len) {
#if (defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)) && \
defined(__APPLE__)
sys_icache_invalidate(Addr, len);
#elif defined(__GNUC__)
const size_t LineSize = 32;
@ -352,8 +349,6 @@ static void SyncICache(const void *Addr, size_t len) {
asm volatile("icbi 0, %0" : : "r"(Line));
asm volatile("isync");
#endif
#endif
}
void *PPCJITInfo::emitFunctionStub(const Function* F, void *Fn,
@ -372,7 +367,7 @@ void *PPCJITInfo::emitFunctionStub(const Function* F, void *Fn,
MCE.emitWordBE(0);
MCE.emitWordBE(0);
EmitBranchToAt(Addr, (intptr_t)Fn, false, is64Bit);
SyncICache((void*)Addr, 7*4);
InvalidateInstructionCache((void*)Addr, 7*4);
return MCE.finishFunctionStub(F);
}
@ -400,7 +395,7 @@ void *PPCJITInfo::emitFunctionStub(const Function* F, void *Fn,
MCE.emitWordBE(0);
MCE.emitWordBE(0);
EmitBranchToAt(BranchAddr, (intptr_t)Fn, true, is64Bit);
SyncICache((void*)Addr, 10*4);
InvalidateInstructionCache((void*)Addr, 10*4);
return MCE.finishFunctionStub(F);
}

5
lib/Target/PowerPC/PPCJITInfo.h
View File

@ -41,6 +41,11 @@ namespace llvm {
/// code.
///
virtual void replaceMachineCodeForFunction(void *Old, void *New);
/// InvalidateInstructionCache - Before the JIT can run a block of code
// that has been emitted it must invalidate the instruction cache on some
// platforms.
virtual void InvalidateInstructionCache(const void *Addr, unsigned len);
};
}