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Fix assembly/disassembly of Thumb2 ADR instructions with immediate operands.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139422 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2011-09-09 22:24:36 +00:00
parent 46ac94ba8b
commit 08fef885eb
5 changed files with 39 additions and 3 deletions
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18
lib/Target/ARM/Disassembler/ARMDisassembler.cpp
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@ -299,6 +299,8 @@ static DecodeStatus DecodeT2LDRDPreInstruction(llvm::MCInst &Inst,unsigned Insn,
uint64_t Address, const void *Decoder);
static DecodeStatus DecodeT2STRDPreInstruction(llvm::MCInst &Inst,unsigned Insn,
uint64_t Address, const void *Decoder);
static DecodeStatus DecodeT2Adr(llvm::MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder);
#include "ARMGenDisassemblerTables.inc"
#include "ARMGenInstrInfo.inc"
@ -3762,3 +3764,19 @@ DecodeT2STRDPreInstruction(llvm::MCInst &Inst, unsigned Insn,
return S;
}
static DecodeStatus DecodeT2Adr(llvm::MCInst &Inst, uint32_t Insn,
uint64_t Address, const void *Decoder) {
unsigned sign1 = fieldFromInstruction32(Insn, 21, 1);
unsigned sign2 = fieldFromInstruction32(Insn, 23, 1);
if (sign1 != sign2) return MCDisassembler::Fail;
unsigned Val = fieldFromInstruction32(Insn, 0, 8);
Val |= fieldFromInstruction32(Insn, 12, 3) << 8;
Val |= fieldFromInstruction32(Insn, 26, 1) << 11;
Val |= sign1 << 12;
Inst.addOperand(MCOperand::CreateImm(SignExtend32<13>(Val)));
return MCDisassembler::Success;
}