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[XCore] Remove '-' from back branch asm syntax.

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Instead operands are treated as negative immediates
where the sign bit is implicit in the instruction
encoding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181151 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Osborne
2013-05-05 13:20:22 +00:00
parent e210df20d3
commit 1114b0ec15
2 changed files with 18 additions and 6 deletions
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9
lib/Target/XCore/Disassembler/XCoreDisassembler.cpp
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@ -97,6 +97,9 @@ static DecodeStatus DecodeRRegsRegisterClass(MCInst &Inst,
static DecodeStatus DecodeBitpOperand(MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder);
static DecodeStatus DecodeNegImmOperand(MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder);
static DecodeStatus Decode2RInstruction(MCInst &Inst,
unsigned Insn,
uint64_t Address,
@ -239,6 +242,12 @@ static DecodeStatus DecodeBitpOperand(MCInst &Inst, unsigned Val,
return MCDisassembler::Success;
}
static DecodeStatus DecodeNegImmOperand(MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder) {
Inst.addOperand(MCOperand::CreateImm(-(int64_t)Val));
return MCDisassembler::Success;
}
static DecodeStatus
Decode2OpInstruction(unsigned Insn, unsigned &Op1, unsigned &Op2) {
unsigned Combined = fieldFromInstruction(Insn, 6, 5);