void MipsAsmPrinter::EmitStartOfAsmFile(Module &M) {
MipsTargetStreamer &TS = getTargetStreamer();
// MipsTargetStreamer has an initialization order problem when emitting an
// object file directly (see MipsTargetELFStreamer for full details). Work
// around it by re-initializing the PIC state here.
TS.setPic(OutContext.getObjectFileInfo()->isPositionIndependent());
// Compute MIPS architecture attributes based on the default subtarget
// that we'd have constructed. Module level directives aren't LTO
// clean anyhow.
// FIXME: For ifunc related functions we could iterate over and look
// for a feature string that doesn't match the default one.
const Triple &TT = TM.getTargetTriple();
StringRef CPU = MIPS_MC::selectMipsCPU(TT, TM.getTargetCPU());
StringRef FS = TM.getTargetFeatureString();
const MipsTargetMachine &MTM = static_cast<const MipsTargetMachine &>(TM);
const MipsSubtarget STI(TT, CPU, FS, MTM.isLittleEndian(), MTM);
bool IsABICalls = STI.isABICalls();
const MipsABIInfo &ABI = MTM.getABI();
if (IsABICalls) {
TS.emitDirectiveAbiCalls();
Reloc::Model RM = TM.getRelocationModel();
// FIXME: This condition should be a lot more complicated that it is here.
// Ideally it should test for properties of the ABI and not the ABI
// itself.
// For the moment, I'm only correcting enough to make MIPS-IV work.
if (RM == Reloc::Static && !ABI.IsN64())
TS.emitDirectiveOptionPic0();
}
// Tell the assembler which ABI we are using
std::string SectionName = std::string(".mdebug.") + getCurrentABIString();
OutStreamer->SwitchSection(
OutContext.getELFSection(SectionName, ELF::SHT_PROGBITS, 0));
// NaN: At the moment we only support:
// 1. .nan legacy (default)
// 2. .nan 2008
STI.isNaN2008() ? TS.emitDirectiveNaN2008()
: TS.emitDirectiveNaNLegacy();
// TODO: handle O64 ABI
TS.updateABIInfo(STI);
// We should always emit a '.module fp=...' but binutils 2.24 does not accept
// it. We therefore emit it when it contradicts the ABI defaults (-mfpxx or
// -mfp64) and omit it otherwise.
if (ABI.IsO32() && (STI.isABI_FPXX() || STI.isFP64bit()))
TS.emitDirectiveModuleFP();
// We should always emit a '.module [no]oddspreg' but binutils 2.24 does not
// accept it. We therefore emit it when it contradicts the default or an
// option has changed the default (i.e. FPXX) and omit it otherwise.
if (ABI.IsO32() && (!STI.useOddSPReg() || STI.isABI_FPXX()))
TS.emitDirectiveModuleOddSPReg();
}
void MipsAsmPrinter::EmitStartOfAsmFile(Module &M) {
// Compute MIPS architecture attributes based on the default subtarget
// that we'd have constructed. Module level directives aren't LTO
// clean anyhow.
// FIXME: For ifunc related functions we could iterate over and look
// for a feature string that doesn't match the default one.
StringRef TT = TM.getTargetTriple();
StringRef CPU =
MIPS_MC::selectMipsCPU(TM.getTargetTriple(), TM.getTargetCPU());
StringRef FS = TM.getTargetFeatureString();
const MipsTargetMachine &MTM = static_cast<const MipsTargetMachine &>(TM);
const MipsSubtarget STI(TT, CPU, FS, MTM.isLittleEndian(), MTM);
bool IsABICalls = STI.isABICalls();
const MipsABIInfo &ABI = MTM.getABI();
if (IsABICalls) {
getTargetStreamer().emitDirectiveAbiCalls();
Reloc::Model RM = TM.getRelocationModel();
// FIXME: This condition should be a lot more complicated that it is here.
// Ideally it should test for properties of the ABI and not the ABI
// itself.
// For the moment, I'm only correcting enough to make MIPS-IV work.
if (RM == Reloc::Static && !ABI.IsN64())
getTargetStreamer().emitDirectiveOptionPic0();
}
// Tell the assembler which ABI we are using
std::string SectionName = std::string(".mdebug.") + getCurrentABIString();
OutStreamer.SwitchSection(
OutContext.getELFSection(SectionName, ELF::SHT_PROGBITS, 0));
// NaN: At the moment we only support:
// 1. .nan legacy (default)
// 2. .nan 2008
STI.isNaN2008() ? getTargetStreamer().emitDirectiveNaN2008()
: getTargetStreamer().emitDirectiveNaNLegacy();
// TODO: handle O64 ABI
if (ABI.IsEABI()) {
if (STI.isGP32bit())
OutStreamer.SwitchSection(OutContext.getELFSection(".gcc_compiled_long32",
ELF::SHT_PROGBITS, 0));
else
OutStreamer.SwitchSection(OutContext.getELFSection(".gcc_compiled_long64",
ELF::SHT_PROGBITS, 0));
}
getTargetStreamer().updateABIInfo(STI);
// We should always emit a '.module fp=...' but binutils 2.24 does not accept
// it. We therefore emit it when it contradicts the ABI defaults (-mfpxx or
// -mfp64) and omit it otherwise.
if (ABI.IsO32() && (STI.isABI_FPXX() || STI.isFP64bit()))
getTargetStreamer().emitDirectiveModuleFP();
// We should always emit a '.module [no]oddspreg' but binutils 2.24 does not
// accept it. We therefore emit it when it contradicts the default or an
// option has changed the default (i.e. FPXX) and omit it otherwise.
if (ABI.IsO32() && (!STI.useOddSPReg() || STI.isABI_FPXX()))
getTargetStreamer().emitDirectiveModuleOddSPReg(STI.useOddSPReg(),
ABI.IsO32());
// @LOCALMOD-START
if (STI.isTargetNaCl()) {
initializeNaClMCStreamer(OutStreamer, OutContext, Triple(TT));
}
// @LOCALMOD-END
}