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mcstreamerize gprel32 emission.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94452 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-01-25 21:28:50 +00:00
parent 0988639963
commit 718fb59801
5 changed files with 24 additions and 14 deletions
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7
include/llvm/MC/MCStreamer.h
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@ -188,6 +188,13 @@ namespace llvm {
/// to pass in a MCExpr for constant integers.
virtual void EmitIntValue(uint64_t Value, unsigned Size,unsigned AddrSpace);
/// EmitGPRel32Value - Emit the expression @param Value into the output as a
/// gprel32 (32-bit GP relative) value.
///
/// This is used to implement assembler directives such as .gprel32 on
/// targets that support them.
virtual void EmitGPRel32Value(const MCExpr *Value) = 0;
/// EmitFill - Emit NumBytes bytes worth of the value specified by
/// FillValue. This implements directives such as '.space'.
virtual void EmitFill(uint64_t NumBytes, uint8_t FillValue,

5
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
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@ -544,8 +544,9 @@ void AsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
const MachineBasicBlock *MBB,
unsigned uid) const {
// If the target supports GPRel, use it.
if (const char *GPRel32Dir = MAI->getGPRel32Directive()) {
O << GPRel32Dir << *GetMBBSymbol(MBB->getNumber()) << '\n';
if (MAI->getGPRel32Directive() != 0) {
MCSymbol *MBBSym = GetMBBSymbol(MBB->getNumber());
OutStreamer.EmitGPRel32Value(MCSymbolRefExpr::Create(MBBSym, OutContext));
return;
}

17
lib/MC/MCAsmStreamer.cpp
View File

@ -110,6 +110,8 @@ public:
virtual void EmitValue(const MCExpr *Value, unsigned Size,unsigned AddrSpace);
virtual void EmitIntValue(uint64_t Value, unsigned Size, unsigned AddrSpace);
virtual void EmitGPRel32Value(const MCExpr *Value);
virtual void EmitFill(uint64_t NumBytes, uint8_t FillValue,
unsigned AddrSpace);
@ -182,12 +184,6 @@ static inline int64_t truncateToSize(int64_t Value, unsigned Bytes) {
return Value & ((uint64_t) (int64_t) -1 >> (64 - Bytes * 8));
}
static inline const MCExpr *truncateToSize(const MCExpr *Value,
unsigned Bytes) {
// FIXME: Do we really need this routine?
return Value;
}
void MCAsmStreamer::SwitchSection(const MCSection *Section) {
assert(Section && "Cannot switch to a null section!");
if (Section != CurSection) {
@ -425,10 +421,17 @@ void MCAsmStreamer::EmitValue(const MCExpr *Value, unsigned Size,
}
assert(Directive && "Invalid size for machine code value!");
OS << Directive << *truncateToSize(Value, Size);
OS << Directive << *Value;
EmitEOL();
}
void MCAsmStreamer::EmitGPRel32Value(const MCExpr *Value) {
assert(MAI.getGPRel32Directive() != 0);
OS << MAI.getGPRel32Directive() << *Value;
EmitEOL();
}
/// EmitFill - Emit NumBytes bytes worth of the value specified by
/// FillValue. This implements directives such as '.space'.
void MCAsmStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue,

7
lib/MC/MCMachOStreamer.cpp
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@ -46,13 +46,9 @@ class MCMachOStreamer : public MCStreamer {
private:
MCAssembler Assembler;
MCCodeEmitter *Emitter;
MCSectionData *CurSectionData;
DenseMap<const MCSection*, MCSectionData*> SectionMap;
DenseMap<const MCSymbol*, MCSymbolData*> SymbolMap;
private:
@ -134,6 +130,9 @@ public:
unsigned Size = 0, unsigned ByteAlignment = 0);
virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
virtual void EmitValue(const MCExpr *Value, unsigned Size,unsigned AddrSpace);
virtual void EmitGPRel32Value(const MCExpr *Value) {
assert(0 && "macho doesn't support this directive");
}
virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
unsigned ValueSize = 1,
unsigned MaxBytesToEmit = 0);

2
lib/MC/MCNullStreamer.cpp
View File

@ -50,7 +50,7 @@ namespace {
virtual void EmitValue(const MCExpr *Value, unsigned Size,
unsigned AddrSpace) {}
virtual void EmitGPRel32Value(const MCExpr *Value) {}
virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
unsigned ValueSize = 1,
unsigned MaxBytesToEmit = 0) {}