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add register list and hacked up addrmode #4 support, we now get this:

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_main:
	stmsp! sp!, {r7, lr}
	mov r7, sp
	sub sp, sp, #4
	mov r0, #0
	str r0, [sp]
	ldr r0, LCPI1_0
	bl _printf
	ldr r0, [sp]
	mov sp, r7
	ldmsp! sp!, {r7, pc}

Note the unhappy ldm/stm because of modifiers being ignored.

llvm-svn: 84546
This commit is contained in:
Chris Lattner 2009-10-19 22:09:23 +00:00
parent 8124977463
commit d7d7fee3fe
2 changed files with 48 additions and 2 deletions
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46
lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
View File

@ -19,6 +19,7 @@
#include "llvm/MC/MCExpr.h"
#include "llvm/Support/raw_ostream.h"
#include "ARMGenInstrNames.inc"
#include "ARMGenRegisterNames.inc"
using namespace llvm;
// Include the auto-generated portion of the assembly writer.
@ -111,3 +112,48 @@ void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op) {
<< " #" << ShImm;
O << "]";
}
void ARMInstPrinter::printAddrMode4Operand(const MCInst *MI, unsigned OpNum,
const char *Modifier) {
// FIXME: ENABLE assert.
//assert((Modifier == 0 || Modifier[0] == 0) && "Cannot print modifiers");
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MO2.getImm());
if (0 && Modifier && strcmp(Modifier, "submode") == 0) {
if (MO1.getReg() == ARM::SP) {
// FIXME
bool isLDM = (MI->getOpcode() == ARM::LDM ||
MI->getOpcode() == ARM::LDM_RET ||
MI->getOpcode() == ARM::t2LDM ||
MI->getOpcode() == ARM::t2LDM_RET);
O << ARM_AM::getAMSubModeAltStr(Mode, isLDM);
} else
O << ARM_AM::getAMSubModeStr(Mode);
} else if (0 && Modifier && strcmp(Modifier, "wide") == 0) {
ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MO2.getImm());
if (Mode == ARM_AM::ia)
O << ".w";
} else {
printOperand(MI, OpNum);
if (ARM_AM::getAM4WBFlag(MO2.getImm()))
O << "!";
}
}
void ARMInstPrinter::printRegisterList(const MCInst *MI, unsigned OpNum) {
O << "{";
// Always skip the first operand, it's the optional (and implicit writeback).
for (unsigned i = OpNum+1, e = MI->getNumOperands(); i != e; ++i) {
#if 0 // FIXME: HANDLE WHEN LOWERING??
if (MI->getOperand(i).isImplicit())
continue;
#endif
if (i != OpNum+1) O << ", ";
O << getRegisterName(MI->getOperand(i).getReg());
}
O << "}";
}

4
lib/Target/ARM/AsmPrinter/ARMInstPrinter.h
View File

@ -45,7 +45,7 @@ public:
void printAddrMode3Operand(const MCInst *MI, unsigned OpNum) {}
void printAddrMode3OffsetOperand(const MCInst *MI, unsigned OpNum) {}
void printAddrMode4Operand(const MCInst *MI, unsigned OpNum,
const char *Modifier = 0) {}
const char *Modifier = 0);
void printAddrMode5Operand(const MCInst *MI, unsigned OpNum,
const char *Modifier = 0) {}
void printAddrMode6Operand(const MCInst *MI, unsigned OpNum) {}
@ -72,7 +72,7 @@ public:
void printPredicateOperand(const MCInst *MI, unsigned OpNum) {}
void printSBitModifierOperand(const MCInst *MI, unsigned OpNum) {}
void printPCLabel(const MCInst *MI, unsigned OpNum) {}
void printRegisterList(const MCInst *MI, unsigned OpNum) {}
void printRegisterList(const MCInst *MI, unsigned OpNum);
void printCPInstOperand(const MCInst *MI, unsigned OpNum,
const char *Modifier) {}
void printJTBlockOperand(const MCInst *MI, unsigned OpNum) {}