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Allow more than one stub to be being generated at the same time.

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It's probably better in the long run to replace the
indirect-GlobalVariable system. That'll be done after a subsequent
patch.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89708 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jeffrey Yasskin
2009-11-23 22:49:00 +00:00
parent f81bf15552
commit 0261d795f8
7 changed files with 97 additions and 73 deletions
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lib/Target/ARM/ARMJITInfo.cpp
+8 -6
View File
@@ -139,7 +139,8 @@ ARMJITInfo::getLazyResolverFunction(JITCompilerFn F) {
void *ARMJITInfo::emitGlobalValueIndirectSym(const GlobalValue *GV, void *Ptr,
JITCodeEmitter &JCE) {
JCE.startGVStub(GV, 4, 4);
MachineCodeEmitter::BufferState BS;
JCE.startGVStub(BS, GV, 4, 4);
intptr_t Addr = (intptr_t)JCE.getCurrentPCValue();
if (!sys::Memory::setRangeWritable((void*)Addr, 4)) {
llvm_unreachable("ERROR: Unable to mark indirect symbol writable");
@@ -148,13 +149,14 @@ void *ARMJITInfo::emitGlobalValueIndirectSym(const GlobalValue *GV, void *Ptr,
if (!sys::Memory::setRangeExecutable((void*)Addr, 4)) {
llvm_unreachable("ERROR: Unable to mark indirect symbol executable");
}
void *PtrAddr = JCE.finishGVStub(GV);
void *PtrAddr = JCE.finishGVStub(BS);
addIndirectSymAddr(Ptr, (intptr_t)PtrAddr);
return PtrAddr;
}
void *ARMJITInfo::emitFunctionStub(const Function* F, void *Fn,
JITCodeEmitter &JCE) {
MachineCodeEmitter::BufferState BS;
// If this is just a call to an external function, emit a branch instead of a
// call. The code is the same except for one bit of the last instruction.
if (Fn != (void*)(intptr_t)ARMCompilationCallback) {
@@ -172,7 +174,7 @@ void *ARMJITInfo::emitFunctionStub(const Function* F, void *Fn,
errs() << "JIT: Stub emitted at [" << LazyPtr
<< "] for external function at '" << Fn << "'\n");
}
JCE.startGVStub(F, 16, 4);
JCE.startGVStub(BS, F, 16, 4);
intptr_t Addr = (intptr_t)JCE.getCurrentPCValue();
if (!sys::Memory::setRangeWritable((void*)Addr, 16)) {
llvm_unreachable("ERROR: Unable to mark stub writable");
@@ -187,7 +189,7 @@ void *ARMJITInfo::emitFunctionStub(const Function* F, void *Fn,
}
} else {
// The stub is 8-byte size and 4-aligned.
JCE.startGVStub(F, 8, 4);
JCE.startGVStub(BS, F, 8, 4);
intptr_t Addr = (intptr_t)JCE.getCurrentPCValue();
if (!sys::Memory::setRangeWritable((void*)Addr, 8)) {
llvm_unreachable("ERROR: Unable to mark stub writable");
@@ -207,7 +209,7 @@ void *ARMJITInfo::emitFunctionStub(const Function* F, void *Fn,
//
// Branch and link to the compilation callback.
// The stub is 16-byte size and 4-byte aligned.
JCE.startGVStub(F, 16, 4);
JCE.startGVStub(BS, F, 16, 4);
intptr_t Addr = (intptr_t)JCE.getCurrentPCValue();
if (!sys::Memory::setRangeWritable((void*)Addr, 16)) {
llvm_unreachable("ERROR: Unable to mark stub writable");
@@ -228,7 +230,7 @@ void *ARMJITInfo::emitFunctionStub(const Function* F, void *Fn,
}
}
return JCE.finishGVStub(F);
return JCE.finishGVStub(BS);
}
intptr_t ARMJITInfo::resolveRelocDestAddr(MachineRelocation *MR) const {