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Support Cygwin assembly generation. The cygwin version of Gnu ASsembler

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doesn't support certain directives and symbols on cygwin are prefixed with
an underscore. This patch makes the necessary adjustments to the output.

llvm-svn: 19775
This commit is contained in:
Reid Spencer 2005-01-23 03:52:14 +00:00
parent bc9df59c41
commit 5c7b6e83f0
1 changed files with 37 additions and 11 deletions
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48
lib/Target/X86/X86AsmPrinter.cpp
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@ -43,10 +43,12 @@ namespace {
struct X86SharedAsmPrinter : public AsmPrinter {
X86SharedAsmPrinter(std::ostream &O, TargetMachine &TM)
: AsmPrinter(O, TM) { }
: AsmPrinter(O, TM), forCygwin(false) { }
bool doInitialization(Module &M);
void printConstantPool(MachineConstantPool *MCP);
bool doFinalization(Module &M);
bool forCygwin;
};
}
@ -77,6 +79,24 @@ static void SwitchSection(std::ostream &OS, std::string &CurSection,
}
}
/// doInitialization - determine
bool X86SharedAsmPrinter::doInitialization(Module& M) {
forCygwin = false;
const std::string& TT = M.getTargetTriple();
if (TT.length() > 5)
forCygwin = TT.find("cygwin") != std::string::npos;
else if (TT.empty()) {
#ifdef __CYGWIN__
forCygwin = true;
#else
forCygwin = false;
#endif
}
if (forCygwin)
GlobalPrefix = "_";
return AsmPrinter::doInitialization(M);
}
/// printConstantPool - Print to the current output stream assembly
/// representations of the constants in the constant pool MCP. This is
/// used to print out constants which have been "spilled to memory" by
@ -114,11 +134,12 @@ bool X86SharedAsmPrinter::doFinalization(Module &M) {
(I->hasLinkOnceLinkage() || I->hasInternalLinkage() ||
I->hasWeakLinkage() /* FIXME: Verify correct */)) {
SwitchSection(O, CurSection, ".data");
if (I->hasInternalLinkage())
if (!forCygwin && I->hasInternalLinkage())
O << "\t.local " << name << "\n";
O << "\t.comm " << name << "," << TD.getTypeSize(C->getType())
<< "," << (1 << Align);
O << "\t.comm " << name << "," << TD.getTypeSize(C->getType());
if (!forCygwin)
O << "," << (1 << Align);
O << "\t\t# ";
WriteAsOperand(O, I, true, true, &M);
O << "\n";
@ -150,8 +171,10 @@ bool X86SharedAsmPrinter::doFinalization(Module &M) {
}
emitAlignment(Align);
O << "\t.type " << name << ",@object\n";
O << "\t.size " << name << "," << Size << "\n";
if (!forCygwin) {
O << "\t.type " << name << ",@object\n";
O << "\t.size " << name << "," << Size << "\n";
}
O << name << ":\t\t\t\t# ";
WriteAsOperand(O, I, true, true, &M);
O << " = ";
@ -239,7 +262,8 @@ bool X86IntelAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
O << "\t.text\n";
emitAlignment(4);
O << "\t.globl\t" << CurrentFnName << "\n";
O << "\t.type\t" << CurrentFnName << ", @function\n";
if (!forCygwin)
O << "\t.type\t" << CurrentFnName << ", @function\n";
O << CurrentFnName << ":\n";
// Print out code for the function.
@ -306,7 +330,7 @@ void X86IntelAsmPrinter::printOp(const MachineOperand &MO,
return;
}
case MachineOperand::MO_ExternalSymbol:
O << MO.getSymbolName();
O << GlobalPrefix << MO.getSymbolName();
return;
default:
O << "<unknown operand type>"; return;
@ -462,7 +486,8 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
O << "\t.text\n";
emitAlignment(4);
O << "\t.globl\t" << CurrentFnName << "\n";
O << "\t.type\t" << CurrentFnName << ", @function\n";
if (!forCygwin)
O << "\t.type\t" << CurrentFnName << ", @function\n";
O << CurrentFnName << ":\n";
// Print out code for the function.
@ -523,7 +548,7 @@ void X86ATTAsmPrinter::printOp(const MachineOperand &MO, bool isCallOp) {
}
case MachineOperand::MO_ExternalSymbol:
if (!isCallOp) O << '$';
O << MO.getSymbolName();
O << GlobalPrefix << MO.getSymbolName();
return;
default:
O << "<unknown operand type>"; return;
@ -600,7 +625,8 @@ void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
///
FunctionPass *llvm::createX86CodePrinterPass(std::ostream &o,TargetMachine &tm){
switch (AsmWriterFlavor) {
default: assert(0 && "Unknown asm flavor!");
default:
assert(0 && "Unknown asm flavor!");
case intel:
return new X86IntelAsmPrinter(o, tm);
case att: