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Since malloc is no longer used, no need to free() memory.

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Fixed BasicBlock patching by supplying correct type for the displacement.

llvm-svn: 6453
This commit is contained in:
Misha Brukman 2003-05-30 20:39:37 +00:00
parent b1b8a6732e
commit a9a5c77dd4
1 changed files with 11 additions and 15 deletions
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26
lib/ExecutionEngine/JIT/SparcEmitter.cpp
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@ -32,16 +32,8 @@ namespace {
std::pair<unsigned*,MachineInstr*> > > BBRefs;
std::map<BasicBlock*, unsigned> BBLocations;
std::vector<void*> ConstantPoolAddresses;
std::vector<void*> funcMemory;
public:
SparcEmitter(VM &vm) : TheVM(vm) {}
~SparcEmitter() {
while (! funcMemory.empty()) {
void* addr = funcMemory.back();
free(addr);
funcMemory.pop_back();
}
}
virtual void startFunction(MachineFunction &F);
virtual void finishFunction(MachineFunction &F);
@ -76,12 +68,12 @@ MachineCodeEmitter *VM::createSparcEmitter(VM &V) {
// FIXME: This should be rewritten to support a real memory manager for
// executable memory pages!
void * SparcEmitter::getMemory(unsigned NumPages) {
void* SparcEmitter::getMemory(unsigned NumPages) {
void *pa;
if (NumPages == 0) return 0;
static const long pageSize = sysconf (_SC_PAGESIZE);
pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if (pa == MAP_FAILED) {
perror("mmap");
abort();
@ -91,28 +83,32 @@ void * SparcEmitter::getMemory(unsigned NumPages) {
void SparcEmitter::startFunction(MachineFunction &F) {
CurBlock = (unsigned char *)getMemory(8);
std::cerr << "Starting function " << F.getFunction()->getName() << "\n";
CurBlock = (unsigned char *)getMemory(8);
CurByte = CurBlock; // Start writing at the beginning of the fn.
TheVM.addGlobalMapping(F.getFunction(), CurBlock);
}
void SparcEmitter::finishFunction(MachineFunction &F) {
std::cerr << "Finishing function " << F.getFunction()->getName() << "\n";
ConstantPoolAddresses.clear();
// Re-write branches to BasicBlocks for the entire function
for (unsigned i = 0, e = BBRefs.size(); i != e; ++i) {
unsigned Location = BBLocations[BBRefs[i].first];
unsigned *Ref = BBRefs[i].second.first;
MachineInstr *MI = BBRefs[i].second.second;
std::cerr << "attempting to resolve BB: " << i << "\n";
for (unsigned i=0, e = MI->getNumOperands(); i != e; ++i) {
MachineOperand &op = MI->getOperand(i);
if (op.isImmediate()) {
MI->SetMachineOperandConst(i, op.getType(), Location);
if (op.isPCRelativeDisp()) {
MI->SetMachineOperandConst(i, MachineOperand::MO_SignExtendedImmed,
Location);
std::cerr << "Rewrote BB ref: ";
unsigned fixedInstr = SparcV9CodeEmitter::getBinaryCodeForInstr(*MI);
*Ref = fixedInstr;
break;
}
}
unsigned fixedInstr = SparcV9CodeEmitter::getBinaryCodeForInstr(*MI);
*Ref = fixedInstr;
}
BBRefs.clear();
BBLocations.clear();