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Thumb2 assembly parsing and encoding for LDRBT.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139267 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2011-09-07 23:39:14 +00:00
parent 489c693f65
commit f0eee6eca8
4 changed files with 45 additions and 13 deletions
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17
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
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@@ -742,6 +742,14 @@ public:
int64_t Val = Mem.OffsetImm->getValue();
return Val > -256 && Val < 256;
}
bool isMemPosImm8Offset() const {
if (Kind != Memory || Mem.OffsetRegNum != 0)
return false;
// Immediate offset in range [0, 255].
if (!Mem.OffsetImm) return true;
int64_t Val = Mem.OffsetImm->getValue();
return Val >= 0 && Val < 256;
}
bool isMemNegImm8Offset() const {
if (Kind != Memory || Mem.OffsetRegNum != 0)
return false;
@@ -1108,11 +1116,12 @@ public:
Inst.addOperand(MCOperand::CreateImm(Val));
}
void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
addMemImm8OffsetOperands(Inst, N);
}
void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
assert(N == 2 && "Invalid number of operands!");
int64_t Val = Mem.OffsetImm ? Mem.OffsetImm->getValue() : 0;
Inst.addOperand(MCOperand::CreateReg(Mem.BaseRegNum));
Inst.addOperand(MCOperand::CreateImm(Val));
addMemImm8OffsetOperands(Inst, N);
}
void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {