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add some more encodings.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95403 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-02-05 19:04:37 +00:00
parent 724bea90b0
commit daa4555793
1 changed files with 36 additions and 1 deletions
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37
lib/Target/X86/X86MCCodeEmitter.cpp
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@ -146,7 +146,7 @@ void X86MCCodeEmitter::EmitMemModRMByte(const MCInst &MI, unsigned Op,
if (Op3.isImm()) {
DispVal = Op3.getImm();
} else {
assert(0 && "Unknown operand");
assert(0 && "relocatable operand");
#if 0
if (Op3.isGlobal()) {
DispForReloc = &Op3;
@ -416,6 +416,41 @@ EncodeInstruction(const MCInst &MI, raw_ostream &OS) const {
EmitConstant(MI.getOperand(CurOp++).getImm(),
X86InstrInfo::sizeOfImm(&Desc), OS);
break;
case X86II::MRMSrcReg:
EmitByte(BaseOpcode, OS);
EmitRegModRMByte(MI.getOperand(CurOp+1), GetX86RegNum(MI.getOperand(CurOp)),
OS);
CurOp += 2;
if (CurOp != NumOps)
EmitConstant(MI.getOperand(CurOp++).getImm(),
X86InstrInfo::sizeOfImm(&Desc), OS);
break;
case X86II::MRMSrcMem: {
EmitByte(BaseOpcode, OS);
// FIXME: Maybe lea should have its own form? This is a horrible hack.
int AddrOperands;
if (Opcode == X86::LEA64r || Opcode == X86::LEA64_32r ||
Opcode == X86::LEA16r || Opcode == X86::LEA32r)
AddrOperands = X86AddrNumOperands - 1; // No segment register
else
AddrOperands = X86AddrNumOperands;
// FIXME: What is this actually doing?
intptr_t PCAdj = (CurOp + AddrOperands + 1 != NumOps) ?
X86InstrInfo::sizeOfImm(&Desc) : 0;
EmitMemModRMByte(MI, CurOp+1, GetX86RegNum(MI.getOperand(CurOp)),
PCAdj, OS);
CurOp += AddrOperands + 1;
if (CurOp != NumOps)
EmitConstant(MI.getOperand(CurOp++).getImm(),
X86InstrInfo::sizeOfImm(&Desc), OS);
break;
}
}
#ifndef NDEBUG