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Thumb2 assembly parsing and encoding for TBB/TBH.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140078 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2011-09-19 22:21:13 +00:00
parent 463158fdb8
commit 7f739bee26
7 changed files with 102 additions and 4 deletions
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18
lib/Target/ARM/Disassembler/ARMDisassembler.cpp
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@ -287,6 +287,8 @@ static DecodeStatus DecodeThumbBLXOffset(llvm::MCInst &Inst, unsigned Insn,
uint64_t Address, const void *Decoder);
static DecodeStatus DecodeT2AddrModeImm12(llvm::MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder);
static DecodeStatus DecodeThumbTableBranch(llvm::MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder);
static DecodeStatus DecodeThumb2BCCInstruction(llvm::MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder);
static DecodeStatus DecodeT2SOImm(llvm::MCInst &Inst, unsigned Val,
@ -2898,6 +2900,22 @@ static DecodeStatus DecodeCoprocessor(llvm::MCInst &Inst, unsigned Val,
return MCDisassembler::Success;
}
static DecodeStatus
DecodeThumbTableBranch(llvm::MCInst &Inst, unsigned Insn,
uint64_t Address, const void *Decoder) {
DecodeStatus S = MCDisassembler::Success;
unsigned Rn = fieldFromInstruction32(Insn, 16, 4);
unsigned Rm = fieldFromInstruction32(Insn, 0, 4);
if (Rn == ARM::SP) S = MCDisassembler::SoftFail;
if (!Check(S, DecodeGPRRegisterClass(Inst, Rn, Address, Decoder)))
return MCDisassembler::Fail;
if (!Check(S, DecoderGPRRegisterClass(Inst, Rm, Address, Decoder)))
return MCDisassembler::Fail;
return S;
}
static DecodeStatus
DecodeThumb2BCCInstruction(llvm::MCInst &Inst, unsigned Insn,
uint64_t Address, const void *Decoder) {