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Add rawfrm flags

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llvm-svn: 4841
This commit is contained in:
Chris Lattner 2002-12-01 23:25:59 +00:00
parent d7ae75d381
commit 89de3f1fc5
2 changed files with 26 additions and 7 deletions
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27
lib/Target/X86/Printer.cpp
View File

@ -78,6 +78,10 @@ static bool isImmediate(const MachineOperand &MO) {
MO.getType() == MachineOperand::MO_UnextendedImmed;
}
static bool isPCRelativeDisp(const MachineOperand &MO) {
return MO.getType() == MachineOperand::MO_PCRelativeDisp;
}
static bool isScale(const MachineOperand &MO) {
return isImmediate(MO) &&
(MO.getImmedValue() == 1 || MO.getImmedValue() == 2 ||
@ -105,6 +109,9 @@ static void printOp(std::ostream &O, const MachineOperand &MO,
case MachineOperand::MO_UnextendedImmed:
O << (int)MO.getImmedValue();
return;
case MachineOperand::MO_PCRelativeDisp:
O << "< " << MO.getVRegValue()->getName() << ">";
return;
default:
O << "<unknown op ty>"; return;
}
@ -305,13 +312,25 @@ void X86InstrInfo::print(const MachineInstr *MI, std::ostream &O,
break;
case X86II::RawFrm:
toHex(O, getBaseOpcodeFor(Opcode));
// The accepted forms of Raw instructions are:
// 1. nop - No operand required
// 2. jmp foo - PC relative displacement operand
//
assert(MI->getNumOperands() == 0 ||
(MI->getNumOperands() == 1 && isPCRelativeDisp(MI->getOperand(0))) &&
"Illegal raw instruction!");
toHex(O, getBaseOpcodeFor(Opcode)) << " ";
if (MI->getNumOperands() == 1) {
Value *V = MI->getOperand(0).getVRegValue();
emitConstant(O, 0, 4);
}
O << "\n\t\t\t\t";
O << getName(MI->getOpCode()) << " ";
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
if (i) O << ", ";
printOp(O, MI->getOperand(i), RI);
if (MI->getNumOperands() == 1) {
printOp(O, MI->getOperand(0), RI);
}
O << "\n";
return;

6
lib/Target/X86/X86InstrInfo.def
View File

@ -36,9 +36,9 @@ I(NOOP , "nop", 0x90, 0, X86II::RawFrm | X86II::Void)
// Flow control instructions
I(RET , "ret", 0xCB, M_RET_FLAG, X86II::RawFrm | X86II::Void) // ret
I(JMP , "jmp", 0xE9, M_BRANCH_FLAG, X86II::Void) // jmp foo
I(JNE , "jne", 0x85, M_BRANCH_FLAG, X86II::TB | X86II::Void)
I(JE , "je", 0x84, M_BRANCH_FLAG, X86II::TB | X86II::Void)
I(JMP , "jmp", 0xE9, M_BRANCH_FLAG, X86II::RawFrm | X86II::Void) // jmp foo
I(JNE , "jne", 0x85, M_BRANCH_FLAG, X86II::RawFrm | X86II::TB | X86II::Void)
I(JE , "je", 0x84, M_BRANCH_FLAG, X86II::RawFrm | X86II::TB | X86II::Void)
I(CALLpcrel32 , "call", 0xE8, M_BRANCH_FLAG, X86II::Void)
// Misc instructions