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Handle ExternalSymbol operands in the PPC JIT

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21312 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-04-18 00:46:10 +00:00
parent 9acc366ae4
commit 477d1de9b2
1 changed files with 13 additions and 9 deletions
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22
lib/Target/PowerPC/PPCCodeEmitter.cpp
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@ -188,8 +188,10 @@ int PPC32CodeEmitter::getMachineOpValue(MachineInstr &MI, MachineOperand &MO) {
rv = enumRegToMachineReg(MO.getReg());
} else if (MO.isImmediate()) {
rv = MO.getImmedValue();
} else if (MO.isGlobalAddress()) {
GlobalValue *GV = MO.getGlobal();
} else if (MO.isGlobalAddress() || MO.isExternalSymbol()) {
bool isExternal = MO.isExternalSymbol() ||
MO.getGlobal()->hasWeakLinkage() ||
MO.getGlobal()->isExternal();
unsigned Reloc = 0;
int Offset = 0;
if (MI.getOpcode() == PPC::CALLpcrel)
@ -199,29 +201,31 @@ int PPC32CodeEmitter::getMachineOpValue(MachineInstr &MI, MachineOperand &MO) {
Offset = -((intptr_t)MovePCtoLROffset+4);
if (MI.getOpcode() == PPC::LOADHiAddr) {
if (GV->hasWeakLinkage() || GV->isExternal())
if (isExternal)
Reloc = PPC::reloc_absolute_ptr_high; // Pointer to stub
else
Reloc = PPC::reloc_absolute_high; // Pointer to symbol
} else if (MI.getOpcode() == PPC::LA) {
assert(!(GV->hasWeakLinkage() || GV->isExternal())
&& "Something in the ISEL changed\n");
assert(!isExternal && "Something in the ISEL changed\n");
Reloc = PPC::reloc_absolute_low;
} else if (MI.getOpcode() == PPC::LWZ) {
Reloc = PPC::reloc_absolute_ptr_low;
assert((GV->hasWeakLinkage() || GV->isExternal()) &&
"Something in the ISEL changed\n");
assert(isExternal && "Something in the ISEL changed\n");
} else {
// These don't show up for global value references AFAIK, only for
// constant pool refs: PPC::LFS, PPC::LFD
assert(0 && "Unknown instruction for relocation!");
}
}
MCE.addRelocation(MachineRelocation(MCE.getCurrentPCOffset(),
Reloc, MO.getGlobal(), Offset));
if (MO.isGlobalAddress())
MCE.addRelocation(MachineRelocation(MCE.getCurrentPCOffset(),
Reloc, MO.getGlobal(), Offset));
else
MCE.addRelocation(MachineRelocation(MCE.getCurrentPCOffset(),
Reloc, MO.getSymbolName(), Offset));
} else if (MO.isMachineBasicBlock()) {
unsigned* CurrPC = (unsigned*)(intptr_t)MCE.getCurrentPCValue();
BBRefs.push_back(std::make_pair(MO.getMachineBasicBlock(), CurrPC));