mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
Implement the missing bits corresponding to .mips_hack_elf_flags.
These were: * noreorder handling on the target object streamer and asm parser. * setting the initial flag bits based on the enabled features. * setting the elf header flag for micromips It is *really* depressing I am the one doing this instead of someone at mips actually taking the time to understand the infrastructure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200138 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
550d791907
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@ -805,6 +805,8 @@ enum LLVM_ENUM_INT_TYPE(unsigned) {
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EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
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EF_MIPS_PIC = 0x00000002, // Position independent code
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EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
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EF_MIPS_ABI2 = 0x00000020,
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EF_MIPS_32BITMODE = 0x00000100,
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EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI
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//ARCH_ASE
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@ -194,7 +194,6 @@ class MipsAsmParser : public MCTargetAsmParser {
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bool isEvaluated(const MCExpr *Expr);
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bool parseDirectiveSet();
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bool parseDirectiveMipsHackELFFlags();
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bool parseDirectiveOption();
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bool parseSetAtDirective();
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@ -2311,6 +2310,7 @@ bool MipsAsmParser::parseSetNoReorderDirective() {
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return false;
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}
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Options.setNoreorder();
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getTargetStreamer().emitDirectiveSetNoReorder();
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Parser.Lex(); // Consume the EndOfStatement.
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return false;
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}
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@ -2429,17 +2429,6 @@ bool MipsAsmParser::parseDirectiveSet() {
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return true;
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}
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bool MipsAsmParser::parseDirectiveMipsHackELFFlags() {
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int64_t Flags = 0;
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if (Parser.parseAbsoluteExpression(Flags)) {
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TokError("unexpected token");
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return false;
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}
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getTargetStreamer().emitMipsHackELFFlags(Flags);
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return false;
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}
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/// parseDirectiveWord
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/// ::= .word [ expression (, expression)* ]
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bool MipsAsmParser::parseDirectiveWord(unsigned Size, SMLoc L) {
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@ -2558,9 +2547,6 @@ bool MipsAsmParser::ParseDirective(AsmToken DirectiveID) {
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return false;
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}
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if (IDVal == ".mips_hack_elf_flags")
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return parseDirectiveMipsHackELFFlags();
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if (IDVal == ".option")
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return parseDirectiveOption();
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@ -134,7 +134,7 @@ static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
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bool RelaxAll, bool NoExecStack) {
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MCStreamer *S =
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createELFStreamer(Context, MAB, OS, Emitter, RelaxAll, NoExecStack);
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new MipsTargetELFStreamer(*S);
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new MipsTargetELFStreamer(*S, STI);
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return S;
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}
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@ -12,8 +12,10 @@
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//===----------------------------------------------------------------------===//
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#include "MipsTargetStreamer.h"
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#include "MipsMCTargetDesc.h"
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#include "llvm/MC/MCELF.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ELF.h"
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#include "llvm/Support/ErrorHandling.h"
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@ -21,9 +23,6 @@
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using namespace llvm;
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static cl::opt<bool> PrintHackDirectives("print-hack-directives",
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cl::init(false), cl::Hidden);
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// Pin vtable to this file.
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void MipsTargetStreamer::anchor() {}
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@ -33,15 +32,6 @@ MipsTargetAsmStreamer::MipsTargetAsmStreamer(MCStreamer &S,
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formatted_raw_ostream &OS)
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: MipsTargetStreamer(S), OS(OS) {}
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void MipsTargetAsmStreamer::emitMipsHackELFFlags(unsigned Flags) {
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if (!PrintHackDirectives)
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return;
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OS << "\t.mips_hack_elf_flags 0x";
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OS.write_hex(Flags);
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OS << '\n';
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}
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void MipsTargetAsmStreamer::emitDirectiveSetMicroMips() {
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OS << "\t.set\tmicromips\n";
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}
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@ -96,8 +86,38 @@ void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
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}
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// This part is for ELF object output.
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MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S)
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: MipsTargetStreamer(S), MicroMipsEnabled(false) {}
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MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S,
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const MCSubtargetInfo &STI)
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: MipsTargetStreamer(S), MicroMipsEnabled(false) {
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MCAssembler &MCA = getStreamer().getAssembler();
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uint64_t Features = STI.getFeatureBits();
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Triple T(STI.getTargetTriple());
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// Update e_header flags
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unsigned EFlags = 0;
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// Architecture
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if (Features & Mips::FeatureMips64r2)
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EFlags |= ELF::EF_MIPS_ARCH_64R2;
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else if (Features & Mips::FeatureMips64)
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EFlags |= ELF::EF_MIPS_ARCH_64;
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else if (Features & Mips::FeatureMips32r2)
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EFlags |= ELF::EF_MIPS_ARCH_32R2;
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else if (Features & Mips::FeatureMips32)
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EFlags |= ELF::EF_MIPS_ARCH_32;
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if (T.isArch64Bit()) {
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EFlags |= ELF::EF_MIPS_ABI2;
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} else {
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if (Features & Mips::FeatureMips64r2 || Features & Mips::FeatureMips64)
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EFlags |= ELF::EF_MIPS_32BITMODE;
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// ABI
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EFlags |= ELF::EF_MIPS_ABI_O32;
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}
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MCA.setELFHeaderEFlags(EFlags);
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}
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void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
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if (!isMicroMipsEnabled())
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@ -117,13 +137,13 @@ MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
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return static_cast<MCELFStreamer &>(Streamer);
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}
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void MipsTargetELFStreamer::emitMipsHackELFFlags(unsigned Flags) {
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MCAssembler &MCA = getStreamer().getAssembler();
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MCA.setELFHeaderEFlags(Flags);
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}
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void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
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MicroMipsEnabled = true;
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MCAssembler &MCA = getStreamer().getAssembler();
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unsigned Flags = MCA.getELFHeaderEFlags();
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Flags |= ELF::EF_MIPS_MICROMIPS;
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MCA.setELFHeaderEFlags(Flags);
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}
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void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
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@ -146,7 +166,10 @@ void MipsTargetELFStreamer::emitDirectiveSetReorder() {
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}
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void MipsTargetELFStreamer::emitDirectiveSetNoReorder() {
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// FIXME: implement.
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MCAssembler &MCA = getStreamer().getAssembler();
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unsigned Flags = MCA.getELFHeaderEFlags();
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Flags |= ELF::EF_MIPS_NOREORDER;
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MCA.setELFHeaderEFlags(Flags);
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}
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void MipsTargetELFStreamer::emitDirectiveSetMacro() {
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@ -176,7 +199,7 @@ void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
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void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
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MCAssembler &MCA = getStreamer().getAssembler();
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unsigned Flags = MCA.getELFHeaderEFlags();
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Flags |= ELF::EF_MIPS_CPIC;
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Flags |= ELF::EF_MIPS_CPIC | ELF::EF_MIPS_PIC;
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MCA.setELFHeaderEFlags(Flags);
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}
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void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
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@ -636,54 +636,10 @@ void MipsAsmPrinter::EmitStartOfAsmFile(Module &M) {
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}
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static void emitELFHeaderFlagsCG(MipsTargetStreamer &TargetStreamer,
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const MipsSubtarget &Subtarget) {
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// Update e_header flags
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unsigned EFlags = 0;
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// TODO: Need to add -mabicalls and -mno-abicalls flags.
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// Currently we assume that -mabicalls is the default.
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EFlags |= ELF::EF_MIPS_CPIC;
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if (Subtarget.inMips16Mode())
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EFlags |= ELF::EF_MIPS_ARCH_ASE_M16;
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else
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EFlags |= ELF::EF_MIPS_NOREORDER;
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// Architecture
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if (Subtarget.hasMips64r2())
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EFlags |= ELF::EF_MIPS_ARCH_64R2;
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else if (Subtarget.hasMips64())
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EFlags |= ELF::EF_MIPS_ARCH_64;
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else if (Subtarget.hasMips32r2())
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EFlags |= ELF::EF_MIPS_ARCH_32R2;
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else
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EFlags |= ELF::EF_MIPS_ARCH_32;
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if (Subtarget.inMicroMipsMode())
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EFlags |= ELF::EF_MIPS_MICROMIPS;
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// ABI
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if (Subtarget.isABI_O32())
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EFlags |= ELF::EF_MIPS_ABI_O32;
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// Relocation Model
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Reloc::Model RM = Subtarget.getRelocationModel();
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if (RM == Reloc::PIC_ || RM == Reloc::Default)
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EFlags |= ELF::EF_MIPS_PIC;
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else if (RM == Reloc::Static)
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; // Do nothing for Reloc::Static
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else
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llvm_unreachable("Unsupported relocation model for e_flags");
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TargetStreamer.emitMipsHackELFFlags(EFlags);
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}
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void MipsAsmPrinter::EmitEndOfAsmFile(Module &M) {
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// Emit Mips ELF register info
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Subtarget->getMReginfo().emitMipsReginfoSectionCG(
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OutStreamer, getObjFileLowering(), *Subtarget);
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emitELFHeaderFlagsCG(getTargetStreamer(), *Subtarget);
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}
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void MipsAsmPrinter::PrintDebugValueComment(const MachineInstr *MI,
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public:
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MipsTargetStreamer(MCStreamer &S);
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virtual void emitMipsHackELFFlags(unsigned Flags) = 0;
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virtual void emitDirectiveSetMicroMips() = 0;
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virtual void emitDirectiveSetNoMicroMips() = 0;
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virtual void emitDirectiveSetMips16() = 0;
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@ -44,7 +43,6 @@ class MipsTargetAsmStreamer : public MipsTargetStreamer {
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public:
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MipsTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
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virtual void emitMipsHackELFFlags(unsigned Flags);
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virtual void emitDirectiveSetMicroMips();
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virtual void emitDirectiveSetNoMicroMips();
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virtual void emitDirectiveSetMips16();
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@ -70,12 +68,10 @@ class MipsTargetELFStreamer : public MipsTargetStreamer {
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public:
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bool isMicroMipsEnabled() const { return MicroMipsEnabled; }
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MCELFStreamer &getStreamer();
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MipsTargetELFStreamer(MCStreamer &S);
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MipsTargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI);
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virtual void emitLabel(MCSymbol *Symbol) LLVM_OVERRIDE;
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// FIXME: emitMipsHackELFFlags() will be removed from this class.
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virtual void emitMipsHackELFFlags(unsigned Flags);
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virtual void emitDirectiveSetMicroMips();
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virtual void emitDirectiveSetNoMicroMips();
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virtual void emitDirectiveSetMips16();
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@ -16,52 +16,66 @@
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; Note that EF_MIPS_CPIC is set by -mabicalls which is the default on Linux
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; TODO need to support -mno-abicalls
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32 -relocation-model=static %s -print-hack-directives -o - | FileCheck -check-prefix=CHECK-BE32 %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32 -print-hack-directives %s -o - | FileCheck -check-prefix=CHECK-BE32_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 -relocation-model=static %s -print-hack-directives -o - | FileCheck -check-prefix=CHECK-BE32R2 %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 -print-hack-directives %s -o - | FileCheck -check-prefix=CHECK-BE32R2_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 -mattr=+micromips -relocation-model=static -print-hack-directives %s -o - | FileCheck -check-prefix=CHECK-BE32R2-MICROMIPS %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 -mattr=+micromips -print-hack-directives %s -o - | FileCheck -check-prefix=CHECK-BE32R2-MICROMIPS_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32 -relocation-model=static %s -o - | FileCheck -check-prefix=CHECK-BE32 %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32 %s -o - | FileCheck -check-prefix=CHECK-BE32_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 -relocation-model=static %s -o - | FileCheck -check-prefix=CHECK-BE32R2 %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 %s -o - | FileCheck -check-prefix=CHECK-BE32R2_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 -mattr=+micromips -relocation-model=static %s -o - | FileCheck -check-prefix=CHECK-BE32R2-MICROMIPS %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 -mattr=+micromips %s -o - | FileCheck -check-prefix=CHECK-BE32R2-MICROMIPS_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips64 -relocation-model=static %s -print-hack-directives -o - | FileCheck -check-prefix=CHECK-BE64 %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips64 %s -print-hack-directives -o - | FileCheck -check-prefix=CHECK-BE64_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips64r2 -relocation-model=static -print-hack-directives %s -o - | FileCheck -check-prefix=CHECK-BE64R2 %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips64r2 -print-hack-directives %s -o - | FileCheck -check-prefix=CHECK-BE64R2_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips64 -relocation-model=static %s -o - | FileCheck -check-prefix=CHECK-BE64 %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips64 %s -o - | FileCheck -check-prefix=CHECK-BE64_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips64r2 -relocation-model=static %s -o - | FileCheck -check-prefix=CHECK-BE64R2 %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips64r2 %s -o - | FileCheck -check-prefix=CHECK-BE64R2_PIC %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 -mattr=+mips16 -relocation-model=pic -print-hack-directives %s -o - | FileCheck -check-prefix=CHECK-LE32R2-MIPS16 %s
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; RUN: llc -mtriple mipsel-unknown-linux -mcpu=mips32r2 -mattr=+mips16 -relocation-model=pic %s -o - | FileCheck -check-prefix=CHECK-LE32R2-MIPS16 %s
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; 32(R1) bit with NO_REORDER and static
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; CHECK-BE32: .mips_hack_elf_flags 0x50001005
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; CHECK-BE32: .abicalls
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; CHECK-BE32: .option pic0
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; CHECK-BE32: .set noreorder
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;
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; 32(R1) bit with NO_REORDER and PIC
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; CHECK-BE32_PIC: .mips_hack_elf_flags 0x50001007
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; CHECK-BE32_PIC: .abicalls
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; CHECK-BE32_PIC: .set noreorder
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;
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; 32R2 bit with NO_REORDER and static
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; CHECK-BE32R2: .mips_hack_elf_flags 0x70001005
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; CHECK-BE32R2: .abicalls
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; CHECK-BE32R2: .option pic0
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; CHECK-BE32R2: .set noreorder
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;
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; 32R2 bit with NO_REORDER and PIC
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; CHECK-BE32R2_PIC: .mips_hack_elf_flags 0x70001007
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; CHECK-BE32R2_PIC: .abicalls
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; CHECK-BE32R2_PIC: .set noreorder
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;
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; 32R2 bit MICROMIPS with NO_REORDER and static
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; CHECK-BE32R2-MICROMIPS: .mips_hack_elf_flags 0x72001005
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; CHECK-BE32R2-MICROMIPS: .abicalls
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; CHECK-BE32R2-MICROMIPS: .option pic0
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; CHECK-BE32R2-MICROMIPS: .set micromips
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;
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; 32R2 bit MICROMIPS with NO_REORDER and PIC
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; CHECK-BE32R2-MICROMIPS_PIC: .mips_hack_elf_flags 0x72001007
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; CHECK-BE32R2-MICROMIPS_PIC: .abicalls
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; CHECK-BE32R2-MICROMIPS_PIC: .set micromips
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;
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; 64(R1) bit with NO_REORDER and static
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; CHECK-BE64: .mips_hack_elf_flags 0x60000005
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; CHECK-BE64: .abicalls
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; CHECK-BE64: .set noreorder
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;
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; 64(R1) bit with NO_REORDER and PIC
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; CHECK-BE64_PIC: .mips_hack_elf_flags 0x60000007
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; CHECK-BE64_PIC: .abicalls
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; CHECK-BE64_PIC: .set noreorder
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;
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; 64R2 bit with NO_REORDER and static
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; CHECK-BE64R2: .mips_hack_elf_flags 0x80000005
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; CHECK-BE64R2: .abicalls
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; CHECK-BE64R2: .set noreorder
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;
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; 64R2 bit with NO_REORDER and PIC
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; CHECK-BE64R2_PIC: .mips_hack_elf_flags 0x80000007
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; CHECK-BE64R2_PIC: .abicalls
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; CHECK-BE64R2_PIC: .set noreorder
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;
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; 32R2 bit MIPS16 with PIC
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; CHECK-LE32R2-MIPS16: .mips_hack_elf_flags 0x74001006
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; CHECK-LE32R2-MIPS16: .abicalls
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; CHECK-LE32R2-MIPS16: .set mips16
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define i32 @main() nounwind {
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entry:
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@ -1,15 +1,20 @@
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// RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux %s -o -| llvm-readobj -h | FileCheck %s
|
||||
// The initial value will be set at 0x50001003 and
|
||||
// we will override that with the negation of 0x2 (option pic0
|
||||
// the addition of 0x4 (.abicalls)
|
||||
# These *MUST* match the output of gas compiled with the same triple and
|
||||
# corresponding options (-mcpu=mips32 -> -mips32 for example).
|
||||
|
||||
.mips_hack_elf_flags 0x50001003
|
||||
# RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux -mcpu=mips64r2 %s -o -| llvm-readobj -h | FileCheck --check-prefix=MIPSEL-MIPS64R2 %s
|
||||
# MIPSEL-MIPS64R2: Flags [ (0x80001100)
|
||||
|
||||
// CHECK: Flags [ (0x54001005)
|
||||
# RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux -mcpu=mips64 %s -o -| llvm-readobj -h | FileCheck --check-prefix=MIPSEL-MIPS64 %s
|
||||
# MIPSEL-MIPS64: Flags [ (0x60001100)
|
||||
|
||||
.abicalls
|
||||
# RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux -mcpu=mips32r2 %s -o -| llvm-readobj -h | FileCheck --check-prefix=MIPSEL-MIPS32R2 %s
|
||||
# MIPSEL-MIPS32R2: Flags [ (0x70001000)
|
||||
|
||||
.option pic0
|
||||
# RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux -mcpu=mips32 %s -o -| llvm-readobj -h | FileCheck --check-prefix=MIPSEL-MIPS32 %s
|
||||
# MIPSEL-MIPS32: Flags [ (0x50001000)
|
||||
|
||||
// Set EF_MIPS_ARCH_ASE_M16 (0x04000000)
|
||||
.set mips16
|
||||
# RUN: llvm-mc -filetype=obj -triple mips64el-unknown-linux -mcpu=mips64r2 %s -o -| llvm-readobj -h | FileCheck --check-prefix=MIPS64EL-MIPS64R2 %s
|
||||
# MIPS64EL-MIPS64R2: Flags [ (0x80000020)
|
||||
|
||||
# RUN: llvm-mc -filetype=obj -triple mips64el-unknown-linux -mcpu=mips64 %s -o -| llvm-readobj -h | FileCheck --check-prefix=MIPS64EL-MIPS64 %s
|
||||
# MIPS64EL-MIPS64: Flags [ (0x60000020)
|
||||
|
6
test/MC/Mips/elf_eflags_abicalls.s
Normal file
6
test/MC/Mips/elf_eflags_abicalls.s
Normal file
@ -0,0 +1,6 @@
|
||||
# RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux -mcpu=mips32 %s -o -| llvm-readobj -h | FileCheck %s
|
||||
|
||||
# This *MUST* match the output of gas compiled with the same triple.
|
||||
# CHECK: Flags [ (0x50001006)
|
||||
|
||||
.abicalls
|
8
test/MC/Mips/elf_eflags_micromips.s
Normal file
8
test/MC/Mips/elf_eflags_micromips.s
Normal file
@ -0,0 +1,8 @@
|
||||
# RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux -mcpu=mips32 %s -o -| llvm-readobj -h | FileCheck %s
|
||||
|
||||
# This *MUST* match the output of gas compiled with the same triple.
|
||||
# CHECK: Flags [ (0x52001000)
|
||||
|
||||
.set micromips
|
||||
f:
|
||||
nop
|
8
test/MC/Mips/elf_eflags_mips16.s
Normal file
8
test/MC/Mips/elf_eflags_mips16.s
Normal file
@ -0,0 +1,8 @@
|
||||
# RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux -mcpu=mips32 %s -o -| llvm-readobj -h | FileCheck %s
|
||||
|
||||
# This *MUST* match the output of gas compiled with the same triple.
|
||||
# CHECK: Flags [ (0x54001000)
|
||||
|
||||
.set mips16
|
||||
f:
|
||||
nop
|
6
test/MC/Mips/elf_eflags_noreorder.s
Normal file
6
test/MC/Mips/elf_eflags_noreorder.s
Normal file
@ -0,0 +1,6 @@
|
||||
# RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux -mcpu=mips32 %s -o -| llvm-readobj -h | FileCheck %s
|
||||
|
||||
# This *MUST* match the output of gas compiled with the same triple.
|
||||
# CHECK: Flags [ (0x50001001)
|
||||
|
||||
.set noreorder
|
7
test/MC/Mips/elf_eflags_pic0.s
Normal file
7
test/MC/Mips/elf_eflags_pic0.s
Normal file
@ -0,0 +1,7 @@
|
||||
# RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux -mcpu=mips32 %s -o -| llvm-readobj -h | FileCheck %s
|
||||
|
||||
# This *MUST* match the output of gas compiled with the same triple.
|
||||
# CHECK: Flags [ (0x50001004)
|
||||
|
||||
.abicalls
|
||||
.option pic0
|
Loading…
Reference in New Issue
Block a user