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Retrieve and add the offset of a symbol in applyFixup rather than retrieve and

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set it in MipsMCCodeEmitter::getMachineOpValue. Assert in getMachineOpValue if
MachineOperand MO is of an unexpected type. 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153494 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2012-03-27 02:33:05 +00:00
parent d7edf7edd4
commit 59182f9425
2 changed files with 65 additions and 65 deletions
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6
lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
View File

@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
//
#include "MipsBaseInfo.h"
#include "MipsFixupKinds.h"
#include "MCTargetDesc/MipsMCTargetDesc.h"
#include "llvm/MC/MCAsmBackend.h"
@ -82,8 +83,9 @@ public:
uint64_t Value) const {
MCFixupKind Kind = Fixup.getKind();
Value = adjustFixupValue((unsigned)Kind, Value);
int64_t SymOffset = MipsGetSymAndOffset(Fixup).second;
if (!Value)
if (!Value && !SymOffset)
return; // Doesn't change encoding.
// Where do we start in the object
@ -114,7 +116,7 @@ public:
}
uint64_t Mask = ((uint64_t)(-1) >> (64 - getFixupKindInfo(Kind).TargetSize));
CurVal = (CurVal & ~Mask) | ((CurVal + Value) & Mask);
CurVal |= (Value + SymOffset) & Mask;
// Write out the fixed up bytes back to the code/data bits.
for (unsigned i = 0; i != NumBytes; ++i) {

124
lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp
View File

@ -179,73 +179,71 @@ getMachineOpValue(const MCInst &MI, const MCOperand &MO,
} else if (MO.isFPImm()) {
return static_cast<unsigned>(APFloat(MO.getFPImm())
.bitcastToAPInt().getHiBits(32).getLimitedValue());
} else if (MO.isExpr()) {
const MCExpr *Expr = MO.getExpr();
MCExpr::ExprKind Kind = Expr->getKind();
unsigned Ret = 0;
}
if (Kind == MCExpr::Binary) {
const MCBinaryExpr *BE = static_cast<const MCBinaryExpr*>(Expr);
Expr = BE->getLHS();
Kind = Expr->getKind();
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(BE->getRHS());
assert((Kind == MCExpr::SymbolRef) && CE &&
"Binary expression must be sym+const.");
Ret = CE->getValue();
}
// MO must be an Expr.
assert(MO.isExpr());
if (Kind == MCExpr::SymbolRef) {
Mips::Fixups FixupKind;
const MCExpr *Expr = MO.getExpr();
MCExpr::ExprKind Kind = Expr->getKind();
switch(cast<MCSymbolRefExpr>(Expr)->getKind()) {
case MCSymbolRefExpr::VK_Mips_GPREL:
FixupKind = Mips::fixup_Mips_GPREL16;
break;
case MCSymbolRefExpr::VK_Mips_GOT_CALL:
FixupKind = Mips::fixup_Mips_CALL16;
break;
case MCSymbolRefExpr::VK_Mips_GOT16:
FixupKind = Mips::fixup_Mips_GOT_Global;
break;
case MCSymbolRefExpr::VK_Mips_GOT:
FixupKind = Mips::fixup_Mips_GOT_Local;
break;
case MCSymbolRefExpr::VK_Mips_ABS_HI:
FixupKind = Mips::fixup_Mips_HI16;
break;
case MCSymbolRefExpr::VK_Mips_ABS_LO:
FixupKind = Mips::fixup_Mips_LO16;
break;
case MCSymbolRefExpr::VK_Mips_TLSGD:
FixupKind = Mips::fixup_Mips_TLSGD;
break;
case MCSymbolRefExpr::VK_Mips_TLSLDM:
FixupKind = Mips::fixup_Mips_TLSLDM;
break;
case MCSymbolRefExpr::VK_Mips_DTPREL_HI:
FixupKind = Mips::fixup_Mips_DTPREL_HI;
break;
case MCSymbolRefExpr::VK_Mips_DTPREL_LO:
FixupKind = Mips::fixup_Mips_DTPREL_LO;
break;
case MCSymbolRefExpr::VK_Mips_GOTTPREL:
FixupKind = Mips::fixup_Mips_GOTTPREL;
break;
case MCSymbolRefExpr::VK_Mips_TPREL_HI:
FixupKind = Mips::fixup_Mips_TPREL_HI;
break;
case MCSymbolRefExpr::VK_Mips_TPREL_LO:
FixupKind = Mips::fixup_Mips_TPREL_LO;
break;
default:
return Ret;
} // switch
Fixups.push_back(MCFixup::Create(0, Expr, MCFixupKind(FixupKind)));
} // if SymbolRef
// All of the information is in the fixup.
return Ret;
if (Kind == MCExpr::Binary) {
Expr = static_cast<const MCBinaryExpr*>(Expr)->getLHS();
Kind = Expr->getKind();
}
llvm_unreachable("Unable to encode MCOperand!");
assert (Kind == MCExpr::SymbolRef);
Mips::Fixups FixupKind;
switch(cast<MCSymbolRefExpr>(Expr)->getKind()) {
case MCSymbolRefExpr::VK_Mips_GPREL:
FixupKind = Mips::fixup_Mips_GPREL16;
break;
case MCSymbolRefExpr::VK_Mips_GOT_CALL:
FixupKind = Mips::fixup_Mips_CALL16;
break;
case MCSymbolRefExpr::VK_Mips_GOT16:
FixupKind = Mips::fixup_Mips_GOT_Global;
break;
case MCSymbolRefExpr::VK_Mips_GOT:
FixupKind = Mips::fixup_Mips_GOT_Local;
break;
case MCSymbolRefExpr::VK_Mips_ABS_HI:
FixupKind = Mips::fixup_Mips_HI16;
break;
case MCSymbolRefExpr::VK_Mips_ABS_LO:
FixupKind = Mips::fixup_Mips_LO16;
break;
case MCSymbolRefExpr::VK_Mips_TLSGD:
FixupKind = Mips::fixup_Mips_TLSGD;
break;
case MCSymbolRefExpr::VK_Mips_TLSLDM:
FixupKind = Mips::fixup_Mips_TLSLDM;
break;
case MCSymbolRefExpr::VK_Mips_DTPREL_HI:
FixupKind = Mips::fixup_Mips_DTPREL_HI;
break;
case MCSymbolRefExpr::VK_Mips_DTPREL_LO:
FixupKind = Mips::fixup_Mips_DTPREL_LO;
break;
case MCSymbolRefExpr::VK_Mips_GOTTPREL:
FixupKind = Mips::fixup_Mips_GOTTPREL;
break;
case MCSymbolRefExpr::VK_Mips_TPREL_HI:
FixupKind = Mips::fixup_Mips_TPREL_HI;
break;
case MCSymbolRefExpr::VK_Mips_TPREL_LO:
FixupKind = Mips::fixup_Mips_TPREL_LO;
break;
default:
break;
} // switch
Fixups.push_back(MCFixup::Create(0, MO.getExpr(), MCFixupKind(FixupKind)));
// All of the information is in the fixup.
return 0;
}
/// getMemEncoding - Return binary encoding of memory related operand.