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Replace .mips_hack_stocg with ".set micromips" and ".set nomicromips".

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This matches what gnu as does and implementing this is easier than arguing
about it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199181 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2014-01-14 04:25:13 +00:00
parent dfa550a176
commit 3c733ea064
8 changed files with 66 additions and 60 deletions
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3
include/llvm/MC/MCStreamer.h
View File

@ -71,6 +71,9 @@ protected:
public:
virtual ~MCTargetStreamer();
void setStreamer(MCStreamer *S) { Streamer = S; }
// Allow a target to add behavior to the EmitLabel of MCStreamer.
virtual void emitLabel(MCSymbol *Symbol);
};
// FIXME: declared here because it is used from

5
lib/MC/MCStreamer.cpp
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@ -24,6 +24,7 @@ using namespace llvm;
// Pin the vtables to this file.
MCTargetStreamer::~MCTargetStreamer() {}
void MCTargetStreamer::emitLabel(MCSymbol *Symbol) {}
void ARMTargetStreamer::anchor() {}
MCStreamer::MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer)
@ -214,6 +215,10 @@ void MCStreamer::EmitLabel(MCSymbol *Symbol) {
assert(getCurrentSection().first && "Cannot emit before setting section!");
AssignSection(Symbol, getCurrentSection().first);
LastSymbol = Symbol;
MCTargetStreamer *TS = getTargetStreamer();
if (TS)
TS->emitLabel(Symbol);
}
void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {

33
lib/Target/Mips/AsmParser/MipsAsmParser.cpp
View File

@ -194,7 +194,6 @@ class MipsAsmParser : public MCTargetAsmParser {
bool isEvaluated(const MCExpr *Expr);
bool parseDirectiveSet();
bool parseDirectiveMipsHackStocg();
bool parseDirectiveMipsHackELFFlags();
bool parseDirectiveOption();
@ -2388,7 +2387,11 @@ bool MipsAsmParser::parseDirectiveSet() {
Parser.eatToEndOfStatement();
return false;
} else if (Tok.getString() == "nomicromips") {
// Ignore this directive for now.
getTargetStreamer().emitDirectiveSetNoMicroMips();
Parser.eatToEndOfStatement();
return false;
} else if (Tok.getString() == "micromips") {
getTargetStreamer().emitDirectiveSetMicroMips();
Parser.eatToEndOfStatement();
return false;
} else {
@ -2400,29 +2403,6 @@ bool MipsAsmParser::parseDirectiveSet() {
return true;
}
bool MipsAsmParser::parseDirectiveMipsHackStocg() {
MCAsmParser &Parser = getParser();
StringRef Name;
if (Parser.parseIdentifier(Name))
reportParseError("expected identifier");
MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
if (getLexer().isNot(AsmToken::Comma)) {
TokError("unexpected token");
return false;
}
Lex();
int64_t Flags = 0;
if (Parser.parseAbsoluteExpression(Flags)) {
TokError("unexpected token");
return false;
}
getTargetStreamer().emitMipsHackSTOCG(Sym, Flags);
return false;
}
bool MipsAsmParser::parseDirectiveMipsHackELFFlags() {
int64_t Flags = 0;
if (Parser.parseAbsoluteExpression(Flags)) {
@ -2552,9 +2532,6 @@ bool MipsAsmParser::ParseDirective(AsmToken DirectiveID) {
return false;
}
if (IDVal == ".mips_hack_stocg")
return parseDirectiveMipsHackStocg();
if (IDVal == ".mips_hack_elf_flags")
return parseDirectiveMipsHackELFFlags();

38
lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
View File

@ -38,16 +38,15 @@ void MipsTargetAsmStreamer::emitMipsHackELFFlags(unsigned Flags) {
OS.write_hex(Flags);
OS << '\n';
}
void MipsTargetAsmStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) {
if (!PrintHackDirectives)
return;
OS << "\t.mips_hack_stocg ";
OS << Sym->getName();
OS << ", ";
OS << Val;
OS << '\n';
void MipsTargetAsmStreamer::emitDirectiveSetMicroMips() {
OS << "\t.set\tmicromips\n";
}
void MipsTargetAsmStreamer::emitDirectiveSetNoMicroMips() {
OS << "\t.set\tnomicromips\n";
}
void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; }
void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
OS << "\t.option\tpic0\n";
@ -56,6 +55,15 @@ void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
// This part is for ELF object output.
MipsTargetELFStreamer::MipsTargetELFStreamer() {}
void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Symbol);
// The "other" values are stored in the last 6 bits of the second byte
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
if (isMicroMipsEnabled())
MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
}
MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
return static_cast<MCELFStreamer &>(*Streamer);
}
@ -65,14 +73,14 @@ void MipsTargetELFStreamer::emitMipsHackELFFlags(unsigned Flags) {
MCA.setELFHeaderEFlags(Flags);
}
// Set a symbol's STO flags.
void MipsTargetELFStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) {
MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Sym);
// The "other" values are stored in the last 6 bits of the second byte
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
MCELF::setOther(Data, Val >> 2);
void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
MicroMipsEnabled = true;
}
void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
MicroMipsEnabled = false;
}
void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
MCAssembler &MCA = getStreamer().getAssembler();
unsigned Flags = MCA.getELFHeaderEFlags();

6
lib/Target/Mips/MipsAsmPrinter.cpp
View File

@ -265,6 +265,9 @@ const char *MipsAsmPrinter::getCurrentABIString() const {
}
void MipsAsmPrinter::EmitFunctionEntryLabel() {
if (Subtarget->inMicroMipsMode())
getTargetStreamer().emitDirectiveSetMicroMips();
if (OutStreamer.hasRawTextSupport()) {
if (Subtarget->inMips16Mode())
OutStreamer.EmitRawText(StringRef("\t.set\tmips16"));
@ -275,9 +278,6 @@ void MipsAsmPrinter::EmitFunctionEntryLabel() {
OutStreamer.EmitRawText("\t.ent\t" + Twine(CurrentFnSym->getName()));
}
if (Subtarget->inMicroMipsMode())
getTargetStreamer().emitMipsHackSTOCG(CurrentFnSym,
(unsigned)ELF::STO_MIPS_MICROMIPS);
OutStreamer.EmitLabel(CurrentFnSym);
}

14
lib/Target/Mips/MipsTargetStreamer.h
View File

@ -19,7 +19,8 @@ class MipsTargetStreamer : public MCTargetStreamer {
public:
virtual void emitMipsHackELFFlags(unsigned Flags) = 0;
virtual void emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) = 0;
virtual void emitDirectiveSetMicroMips() = 0;
virtual void emitDirectiveSetNoMicroMips() = 0;
virtual void emitDirectiveAbiCalls() = 0;
virtual void emitDirectiveOptionPic0() = 0;
};
@ -31,19 +32,26 @@ class MipsTargetAsmStreamer : public MipsTargetStreamer {
public:
MipsTargetAsmStreamer(formatted_raw_ostream &OS);
virtual void emitMipsHackELFFlags(unsigned Flags);
virtual void emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val);
virtual void emitDirectiveSetMicroMips();
virtual void emitDirectiveSetNoMicroMips();
virtual void emitDirectiveAbiCalls();
virtual void emitDirectiveOptionPic0();
};
// This part is for ELF object output
class MipsTargetELFStreamer : public MipsTargetStreamer {
bool MicroMipsEnabled;
public:
bool isMicroMipsEnabled() const { return MicroMipsEnabled; }
MCELFStreamer &getStreamer();
MipsTargetELFStreamer();
virtual void emitLabel(MCSymbol *Symbol) LLVM_OVERRIDE;
// FIXME: emitMipsHackELFFlags() will be removed from this class.
virtual void emitMipsHackELFFlags(unsigned Flags);
virtual void emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val);
virtual void emitDirectiveSetMicroMips();
virtual void emitDirectiveSetNoMicroMips();
virtual void emitDirectiveAbiCalls();
virtual void emitDirectiveOptionPic0();
};

3
test/MC/Mips/elf_st_other.ll
View File

@ -8,4 +8,5 @@ entry:
ret i32 0
}
; CHECK: .mips_hack_stocg main, 128
; CHECK: .set micromips
; CHECK: main:

24
test/MC/Mips/elf_st_other.s
View File

@ -1,13 +1,17 @@
// RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux %s -o -| llvm-readobj -t | FileCheck %s
.text
.globl main
.align 2
.type main,@function
.set nomips16 # @main
.ent main
.mips_hack_stocg main, 128
main:
// CHECK: Name: main
// CHECK: Other: 128
.globl f1
.set micromips
f1:
nop
.globl f2
.set nomicromips
f2:
nop
// CHECK-LABEL: Name: f1
// CHECK: Other: 128
// CHECK-LABEL: Name: f2
// CHECK: Other: 0