2005-07-01 22:44:09 +00:00
|
|
|
//===-- X86ATTAsmPrinter.cpp - Convert X86 LLVM code to Intel assembly ----===//
|
|
|
|
//
|
|
|
|
// The LLVM Compiler Infrastructure
|
|
|
|
//
|
|
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
|
|
//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//
|
|
|
|
// This file contains a printer that converts from our internal representation
|
|
|
|
// of machine-dependent LLVM code to AT&T format assembly
|
|
|
|
// language. This printer is the output mechanism used by `llc'.
|
|
|
|
//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
2006-12-19 22:59:26 +00:00
|
|
|
#define DEBUG_TYPE "asm-printer"
|
2005-07-01 22:44:09 +00:00
|
|
|
#include "X86ATTAsmPrinter.h"
|
|
|
|
#include "X86.h"
|
2007-01-16 16:41:57 +00:00
|
|
|
#include "X86COFF.h"
|
2006-09-20 22:03:51 +00:00
|
|
|
#include "X86MachineFunctionInfo.h"
|
2005-07-01 22:44:09 +00:00
|
|
|
#include "X86TargetMachine.h"
|
2006-09-07 22:06:40 +00:00
|
|
|
#include "X86TargetAsmInfo.h"
|
2007-01-12 19:20:47 +00:00
|
|
|
#include "llvm/ADT/StringExtras.h"
|
2006-09-20 22:03:51 +00:00
|
|
|
#include "llvm/CallingConv.h"
|
2005-07-01 22:44:09 +00:00
|
|
|
#include "llvm/Module.h"
|
|
|
|
#include "llvm/Support/Mangler.h"
|
2006-09-07 22:06:40 +00:00
|
|
|
#include "llvm/Target/TargetAsmInfo.h"
|
2006-02-18 00:15:05 +00:00
|
|
|
#include "llvm/Target/TargetOptions.h"
|
2006-12-19 22:59:26 +00:00
|
|
|
#include "llvm/ADT/Statistic.h"
|
2005-07-01 22:44:09 +00:00
|
|
|
using namespace llvm;
|
|
|
|
|
2006-12-19 22:59:26 +00:00
|
|
|
STATISTIC(EmittedInsts, "Number of machine instrs printed");
|
|
|
|
|
2007-01-18 01:49:58 +00:00
|
|
|
static std::string computePICLabel(unsigned FnNum,
|
|
|
|
const TargetAsmInfo *TAI,
|
|
|
|
const X86Subtarget* Subtarget) {
|
2007-01-12 19:20:47 +00:00
|
|
|
std::string label;
|
2007-01-18 01:49:58 +00:00
|
|
|
if (Subtarget->isTargetDarwin())
|
|
|
|
label = "\"L" + utostr_32(FnNum) + "$pb\"";
|
|
|
|
else if (Subtarget->isTargetELF())
|
|
|
|
label = ".Lllvm$" + utostr_32(FnNum) + "$piclabel";
|
|
|
|
else
|
2007-01-12 19:20:47 +00:00
|
|
|
assert(0 && "Don't know how to print PIC label!\n");
|
|
|
|
|
|
|
|
return label;
|
|
|
|
}
|
|
|
|
|
2006-10-05 02:43:52 +00:00
|
|
|
/// getSectionForFunction - Return the section that we should emit the
|
|
|
|
/// specified function body into.
|
|
|
|
std::string X86ATTAsmPrinter::getSectionForFunction(const Function &F) const {
|
|
|
|
switch (F.getLinkage()) {
|
|
|
|
default: assert(0 && "Unknown linkage type!");
|
|
|
|
case Function::InternalLinkage:
|
|
|
|
case Function::DLLExportLinkage:
|
|
|
|
case Function::ExternalLinkage:
|
|
|
|
return TAI->getTextSection();
|
|
|
|
case Function::WeakLinkage:
|
|
|
|
case Function::LinkOnceLinkage:
|
|
|
|
if (Subtarget->isTargetDarwin()) {
|
|
|
|
return ".section __TEXT,__textcoal_nt,coalesced,pure_instructions";
|
2007-01-03 11:43:14 +00:00
|
|
|
} else if (Subtarget->isTargetCygMing()) {
|
2006-10-18 09:12:29 +00:00
|
|
|
return "\t.section\t.text$linkonce." + CurrentFnName + ",\"ax\"\n";
|
2006-10-05 02:43:52 +00:00
|
|
|
} else {
|
|
|
|
return "\t.section\t.llvm.linkonce.t." + CurrentFnName +
|
|
|
|
",\"ax\",@progbits\n";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-07-01 22:44:09 +00:00
|
|
|
/// runOnMachineFunction - This uses the printMachineInstruction()
|
|
|
|
/// method to print assembly for each instruction.
|
|
|
|
///
|
|
|
|
bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
|
2006-10-31 08:31:24 +00:00
|
|
|
if (Subtarget->isTargetDarwin() ||
|
|
|
|
Subtarget->isTargetELF() ||
|
2007-01-03 11:43:14 +00:00
|
|
|
Subtarget->isTargetCygMing()) {
|
2006-07-19 11:54:50 +00:00
|
|
|
// Let PassManager know we need debug information and relay
|
2007-01-26 21:22:28 +00:00
|
|
|
// the MachineModuleInfo address on to DwarfWriter.
|
|
|
|
DW.SetModuleInfo(&getAnalysis<MachineModuleInfo>());
|
2006-07-19 11:54:50 +00:00
|
|
|
}
|
2006-03-07 02:02:57 +00:00
|
|
|
|
2005-11-21 07:51:23 +00:00
|
|
|
SetupMachineFunction(MF);
|
2005-07-01 22:44:09 +00:00
|
|
|
O << "\n\n";
|
|
|
|
|
|
|
|
// Print out constants referenced by the function
|
2005-11-21 08:32:23 +00:00
|
|
|
EmitConstantPool(MF.getConstantPool());
|
2005-07-01 22:44:09 +00:00
|
|
|
|
|
|
|
// Print out labels for the function.
|
2006-02-07 08:38:37 +00:00
|
|
|
const Function *F = MF.getFunction();
|
2006-09-20 22:03:51 +00:00
|
|
|
unsigned CC = F->getCallingConv();
|
|
|
|
|
|
|
|
// Populate function information map. Actually, We don't want to populate
|
|
|
|
// non-stdcall or non-fastcall functions' information right now.
|
2006-09-26 03:57:53 +00:00
|
|
|
if (CC == CallingConv::X86_StdCall || CC == CallingConv::X86_FastCall)
|
2007-04-17 17:21:52 +00:00
|
|
|
FunctionInfoMap[F] = *MF.getInfo<X86MachineFunctionInfo>();
|
2006-09-20 22:03:51 +00:00
|
|
|
|
|
|
|
X86SharedAsmPrinter::decorateName(CurrentFnName, F);
|
|
|
|
|
2007-01-07 00:41:20 +00:00
|
|
|
SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
|
2007-01-06 18:24:26 +00:00
|
|
|
|
2006-02-07 08:38:37 +00:00
|
|
|
switch (F->getLinkage()) {
|
|
|
|
default: assert(0 && "Unknown linkage type!");
|
|
|
|
case Function::InternalLinkage: // Symbols default to internal.
|
|
|
|
EmitAlignment(4, F); // FIXME: This should be parameterized somewhere.
|
|
|
|
break;
|
2006-09-14 18:23:27 +00:00
|
|
|
case Function::DLLExportLinkage:
|
|
|
|
DLLExportedFns.insert(Mang->makeNameProper(F->getName(), ""));
|
|
|
|
//FALLS THROUGH
|
2006-02-07 08:38:37 +00:00
|
|
|
case Function::ExternalLinkage:
|
|
|
|
EmitAlignment(4, F); // FIXME: This should be parameterized somewhere.
|
2006-09-14 18:23:27 +00:00
|
|
|
O << "\t.globl\t" << CurrentFnName << "\n";
|
2006-02-07 08:38:37 +00:00
|
|
|
break;
|
|
|
|
case Function::LinkOnceLinkage:
|
2006-10-18 09:12:29 +00:00
|
|
|
case Function::WeakLinkage:
|
2006-07-27 02:05:13 +00:00
|
|
|
if (Subtarget->isTargetDarwin()) {
|
2006-02-22 23:59:57 +00:00
|
|
|
O << "\t.globl\t" << CurrentFnName << "\n";
|
2006-10-17 20:29:49 +00:00
|
|
|
O << "\t.weak_definition\t" << CurrentFnName << "\n";
|
2007-01-03 11:43:14 +00:00
|
|
|
} else if (Subtarget->isTargetCygMing()) {
|
2006-10-17 20:29:49 +00:00
|
|
|
EmitAlignment(4, F); // FIXME: This should be parameterized somewhere.
|
|
|
|
O << "\t.globl " << CurrentFnName << "\n";
|
2007-02-23 01:58:50 +00:00
|
|
|
O << "\t.linkonce discard\n";
|
2006-10-17 20:29:49 +00:00
|
|
|
} else {
|
|
|
|
EmitAlignment(4, F); // FIXME: This should be parameterized somewhere.
|
|
|
|
O << "\t.weak " << CurrentFnName << "\n";
|
|
|
|
}
|
|
|
|
break;
|
2006-02-07 08:38:37 +00:00
|
|
|
}
|
2007-01-14 06:29:53 +00:00
|
|
|
if (F->hasHiddenVisibility())
|
|
|
|
if (const char *Directive = TAI->getHiddenDirective())
|
|
|
|
O << Directive << CurrentFnName << "\n";
|
2007-01-16 16:41:57 +00:00
|
|
|
|
|
|
|
if (Subtarget->isTargetELF())
|
|
|
|
O << "\t.type " << CurrentFnName << ",@function\n";
|
|
|
|
else if (Subtarget->isTargetCygMing()) {
|
|
|
|
O << "\t.def\t " << CurrentFnName
|
|
|
|
<< ";\t.scl\t" <<
|
|
|
|
(F->getLinkage() == Function::InternalLinkage ? COFF::C_STAT : COFF::C_EXT)
|
|
|
|
<< ";\t.type\t" << (COFF::DT_FCN << COFF::N_BTSHFT)
|
|
|
|
<< ";\t.endef\n";
|
|
|
|
}
|
|
|
|
|
2005-07-01 22:44:09 +00:00
|
|
|
O << CurrentFnName << ":\n";
|
2006-10-18 09:12:29 +00:00
|
|
|
// Add some workaround for linkonce linkage on Cygwin\MinGW
|
2007-01-03 11:43:14 +00:00
|
|
|
if (Subtarget->isTargetCygMing() &&
|
2006-10-18 09:12:29 +00:00
|
|
|
(F->getLinkage() == Function::LinkOnceLinkage ||
|
|
|
|
F->getLinkage() == Function::WeakLinkage))
|
2007-01-12 19:20:47 +00:00
|
|
|
O << "Lllvm$workaround$fake$stub$" << CurrentFnName << ":\n";
|
2005-07-01 22:44:09 +00:00
|
|
|
|
2006-10-31 08:31:24 +00:00
|
|
|
if (Subtarget->isTargetDarwin() ||
|
|
|
|
Subtarget->isTargetELF() ||
|
2007-01-03 11:43:14 +00:00
|
|
|
Subtarget->isTargetCygMing()) {
|
2006-04-07 20:44:42 +00:00
|
|
|
// Emit pre-function debug information.
|
2006-06-23 12:51:53 +00:00
|
|
|
DW.BeginFunction(&MF);
|
2006-04-07 20:44:42 +00:00
|
|
|
}
|
|
|
|
|
2005-07-01 22:44:09 +00:00
|
|
|
// Print out code for the function.
|
|
|
|
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
|
|
|
|
I != E; ++I) {
|
|
|
|
// Print a label for the basic block.
|
2006-05-02 05:37:32 +00:00
|
|
|
if (I->pred_begin() != I->pred_end()) {
|
|
|
|
printBasicBlockLabel(I, true);
|
|
|
|
O << '\n';
|
|
|
|
}
|
2005-07-01 22:44:09 +00:00
|
|
|
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
|
|
|
|
II != E; ++II) {
|
|
|
|
// Print the assembly for the instruction.
|
|
|
|
O << "\t";
|
|
|
|
printMachineInstruction(II);
|
|
|
|
}
|
|
|
|
}
|
2006-08-28 22:14:16 +00:00
|
|
|
|
2006-10-05 03:01:21 +00:00
|
|
|
// Print out jump tables referenced by the function.
|
|
|
|
|
|
|
|
// Mac OS X requires that the jump table follow the function, so that the jump
|
|
|
|
// table is part of the same atom that the function is in.
|
|
|
|
EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
|
2006-08-28 22:14:16 +00:00
|
|
|
|
2006-09-06 18:34:40 +00:00
|
|
|
if (TAI->hasDotTypeDotSizeDirective())
|
2005-07-12 01:37:28 +00:00
|
|
|
O << "\t.size " << CurrentFnName << ", .-" << CurrentFnName << "\n";
|
2005-07-01 22:44:09 +00:00
|
|
|
|
2006-10-31 08:31:24 +00:00
|
|
|
if (Subtarget->isTargetDarwin() ||
|
|
|
|
Subtarget->isTargetELF() ||
|
2007-01-03 11:43:14 +00:00
|
|
|
Subtarget->isTargetCygMing()) {
|
2006-03-07 02:23:26 +00:00
|
|
|
// Emit post-function debug information.
|
2006-03-23 18:09:44 +00:00
|
|
|
DW.EndFunction();
|
2006-03-07 02:23:26 +00:00
|
|
|
}
|
2006-03-07 02:02:57 +00:00
|
|
|
|
2005-07-01 22:44:09 +00:00
|
|
|
// We didn't modify anything.
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2007-01-18 22:27:12 +00:00
|
|
|
static inline bool printGOT(TargetMachine &TM, const X86Subtarget* ST) {
|
|
|
|
return ST->isPICStyleGOT() && TM.getRelocationModel() == Reloc::PIC_;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline bool printStub(TargetMachine &TM, const X86Subtarget* ST) {
|
|
|
|
return ST->isPICStyleStub() && TM.getRelocationModel() != Reloc::Static;
|
|
|
|
}
|
|
|
|
|
2006-02-06 23:41:19 +00:00
|
|
|
void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
|
2006-12-05 19:50:18 +00:00
|
|
|
const char *Modifier, bool NotRIPRel) {
|
2006-02-06 23:41:19 +00:00
|
|
|
const MachineOperand &MO = MI->getOperand(OpNo);
|
2005-07-01 22:44:09 +00:00
|
|
|
const MRegisterInfo &RI = *TM.getRegisterInfo();
|
|
|
|
switch (MO.getType()) {
|
2006-05-05 05:40:20 +00:00
|
|
|
case MachineOperand::MO_Register: {
|
2005-07-01 22:44:09 +00:00
|
|
|
assert(MRegisterInfo::isPhysicalRegister(MO.getReg()) &&
|
|
|
|
"Virtual registers should not make it this far!");
|
|
|
|
O << '%';
|
2006-05-05 05:40:20 +00:00
|
|
|
unsigned Reg = MO.getReg();
|
2006-05-31 22:34:26 +00:00
|
|
|
if (Modifier && strncmp(Modifier, "subreg", strlen("subreg")) == 0) {
|
2006-09-08 06:48:29 +00:00
|
|
|
MVT::ValueType VT = (strcmp(Modifier+6,"64") == 0) ?
|
|
|
|
MVT::i64 : ((strcmp(Modifier+6, "32") == 0) ? MVT::i32 :
|
|
|
|
((strcmp(Modifier+6,"16") == 0) ? MVT::i16 : MVT::i8));
|
2006-05-05 05:40:20 +00:00
|
|
|
Reg = getX86SubSuperRegister(Reg, VT);
|
|
|
|
}
|
|
|
|
for (const char *Name = RI.get(Reg).Name; *Name; ++Name)
|
2005-07-01 22:44:09 +00:00
|
|
|
O << (char)tolower(*Name);
|
|
|
|
return;
|
2006-05-05 05:40:20 +00:00
|
|
|
}
|
2005-07-01 22:44:09 +00:00
|
|
|
|
2006-05-04 17:21:20 +00:00
|
|
|
case MachineOperand::MO_Immediate:
|
2007-01-25 02:53:24 +00:00
|
|
|
if (!Modifier ||
|
|
|
|
(strcmp(Modifier, "debug") && strcmp(Modifier, "mem")))
|
2006-03-07 02:02:57 +00:00
|
|
|
O << '$';
|
2006-05-26 08:04:31 +00:00
|
|
|
O << MO.getImmedValue();
|
2005-07-01 22:44:09 +00:00
|
|
|
return;
|
2006-04-22 18:53:45 +00:00
|
|
|
case MachineOperand::MO_MachineBasicBlock:
|
|
|
|
printBasicBlockLabel(MO.getMachineBasicBlock());
|
2005-07-01 22:44:09 +00:00
|
|
|
return;
|
2006-04-22 18:53:45 +00:00
|
|
|
case MachineOperand::MO_JumpTableIndex: {
|
|
|
|
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
|
|
|
|
if (!isMemOp) O << '$';
|
2006-09-06 18:34:40 +00:00
|
|
|
O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() << "_"
|
2006-04-22 18:53:45 +00:00
|
|
|
<< MO.getJumpTableIndex();
|
2007-01-12 19:20:47 +00:00
|
|
|
|
|
|
|
if (TM.getRelocationModel() == Reloc::PIC_) {
|
|
|
|
if (Subtarget->isPICStyleStub())
|
2007-01-18 01:49:58 +00:00
|
|
|
O << "-\"" << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
|
|
|
|
<< "$pb\"";
|
2007-01-12 19:20:47 +00:00
|
|
|
else if (Subtarget->isPICStyleGOT())
|
|
|
|
O << "@GOTOFF";
|
|
|
|
}
|
|
|
|
|
2007-01-18 22:27:12 +00:00
|
|
|
if (isMemOp && Subtarget->isPICStyleRIPRel() && !NotRIPRel)
|
2006-09-08 06:48:29 +00:00
|
|
|
O << "(%rip)";
|
2006-04-22 18:53:45 +00:00
|
|
|
return;
|
|
|
|
}
|
2006-02-26 08:28:12 +00:00
|
|
|
case MachineOperand::MO_ConstantPoolIndex: {
|
|
|
|
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
|
|
|
|
if (!isMemOp) O << '$';
|
2006-09-06 18:34:40 +00:00
|
|
|
O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << "_"
|
2006-02-26 08:28:12 +00:00
|
|
|
<< MO.getConstantPoolIndex();
|
2007-01-12 19:20:47 +00:00
|
|
|
|
|
|
|
if (TM.getRelocationModel() == Reloc::PIC_) {
|
|
|
|
if (Subtarget->isPICStyleStub())
|
2007-01-18 01:49:58 +00:00
|
|
|
O << "-\"" << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
|
|
|
|
<< "$pb\"";
|
2007-01-18 22:27:12 +00:00
|
|
|
else if (Subtarget->isPICStyleGOT())
|
2007-01-12 19:20:47 +00:00
|
|
|
O << "@GOTOFF";
|
|
|
|
}
|
|
|
|
|
2006-02-26 08:28:12 +00:00
|
|
|
int Offset = MO.getOffset();
|
|
|
|
if (Offset > 0)
|
|
|
|
O << "+" << Offset;
|
|
|
|
else if (Offset < 0)
|
|
|
|
O << Offset;
|
2006-09-08 06:48:29 +00:00
|
|
|
|
2007-01-18 22:27:12 +00:00
|
|
|
if (isMemOp && Subtarget->isPICStyleRIPRel() && !NotRIPRel)
|
2006-09-08 06:48:29 +00:00
|
|
|
O << "(%rip)";
|
2006-02-26 08:28:12 +00:00
|
|
|
return;
|
|
|
|
}
|
2005-07-01 22:44:09 +00:00
|
|
|
case MachineOperand::MO_GlobalAddress: {
|
2006-02-06 23:41:19 +00:00
|
|
|
bool isCallOp = Modifier && !strcmp(Modifier, "call");
|
2006-02-07 08:38:37 +00:00
|
|
|
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
|
2006-09-08 06:48:29 +00:00
|
|
|
|
2006-09-20 22:03:51 +00:00
|
|
|
GlobalValue *GV = MO.getGlobal();
|
2007-04-20 21:38:10 +00:00
|
|
|
GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV);
|
|
|
|
bool isThreadLocal = GVar && GVar->isThreadLocal();
|
|
|
|
|
2007-04-22 22:50:52 +00:00
|
|
|
if (!isMemOp && !isCallOp) O << '$';
|
2007-04-20 21:38:10 +00:00
|
|
|
|
2006-09-08 06:48:29 +00:00
|
|
|
std::string Name = Mang->getValueName(GV);
|
2006-09-26 03:57:53 +00:00
|
|
|
X86SharedAsmPrinter::decorateName(Name, GV);
|
2006-09-20 22:03:51 +00:00
|
|
|
|
2007-01-18 22:27:12 +00:00
|
|
|
if (printStub(TM, Subtarget)) {
|
2006-02-07 08:38:37 +00:00
|
|
|
// Link-once, External, or Weakly-linked global variables need
|
|
|
|
// non-lazily-resolved stubs
|
2007-01-30 20:08:39 +00:00
|
|
|
if (GV->isDeclaration() ||
|
2007-01-18 22:27:12 +00:00
|
|
|
GV->hasWeakLinkage() ||
|
|
|
|
GV->hasLinkOnceLinkage()) {
|
2006-02-07 08:38:37 +00:00
|
|
|
// Dynamically-resolved functions need a stub for the function.
|
2006-09-08 06:48:29 +00:00
|
|
|
if (isCallOp && isa<Function>(GV)) {
|
2006-02-07 08:38:37 +00:00
|
|
|
FnStubs.insert(Name);
|
2007-01-18 01:49:58 +00:00
|
|
|
O << TAI->getPrivateGlobalPrefix() << Name << "$stub";
|
2006-02-07 08:38:37 +00:00
|
|
|
} else {
|
|
|
|
GVStubs.insert(Name);
|
2007-01-18 01:49:58 +00:00
|
|
|
O << TAI->getPrivateGlobalPrefix() << Name << "$non_lazy_ptr";
|
2006-02-07 08:38:37 +00:00
|
|
|
}
|
2006-09-14 18:23:27 +00:00
|
|
|
} else {
|
2007-01-18 22:27:12 +00:00
|
|
|
if (GV->hasDLLImportLinkage())
|
2006-09-14 18:23:27 +00:00
|
|
|
O << "__imp_";
|
2006-09-08 06:48:29 +00:00
|
|
|
O << Name;
|
2006-09-14 18:23:27 +00:00
|
|
|
}
|
|
|
|
|
2006-07-26 21:12:04 +00:00
|
|
|
if (!isCallOp && TM.getRelocationModel() == Reloc::PIC_)
|
2007-01-18 01:49:58 +00:00
|
|
|
O << "-\"" << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
|
|
|
|
<< "$pb\"";
|
2006-09-14 18:23:27 +00:00
|
|
|
} else {
|
|
|
|
if (GV->hasDLLImportLinkage()) {
|
|
|
|
O << "__imp_";
|
|
|
|
}
|
2006-09-08 06:48:29 +00:00
|
|
|
O << Name;
|
2007-01-12 19:20:47 +00:00
|
|
|
|
2007-01-16 16:41:57 +00:00
|
|
|
if (isCallOp && isa<Function>(GV)) {
|
2007-01-18 22:27:12 +00:00
|
|
|
if (printGOT(TM, Subtarget)) {
|
2007-01-16 16:41:57 +00:00
|
|
|
// Assemble call via PLT for non-local symbols
|
2007-01-30 20:08:39 +00:00
|
|
|
if (!GV->hasHiddenVisibility() || GV->isDeclaration())
|
2007-01-16 16:41:57 +00:00
|
|
|
O << "@PLT";
|
|
|
|
}
|
2007-01-30 20:08:39 +00:00
|
|
|
if (Subtarget->isTargetCygMing() && GV->isDeclaration())
|
2007-01-16 16:41:57 +00:00
|
|
|
// Save function name for later type emission
|
|
|
|
FnStubs.insert(Name);
|
2007-01-12 19:20:47 +00:00
|
|
|
}
|
2006-09-14 18:23:27 +00:00
|
|
|
}
|
2006-12-01 00:25:12 +00:00
|
|
|
|
2006-12-01 07:38:23 +00:00
|
|
|
if (GV->hasExternalWeakLinkage())
|
2006-12-18 03:37:18 +00:00
|
|
|
ExtWeakSymbols.insert(GV);
|
2006-09-14 18:23:27 +00:00
|
|
|
|
2005-07-01 22:44:09 +00:00
|
|
|
int Offset = MO.getOffset();
|
|
|
|
if (Offset > 0)
|
|
|
|
O << "+" << Offset;
|
|
|
|
else if (Offset < 0)
|
|
|
|
O << Offset;
|
2006-09-08 06:48:29 +00:00
|
|
|
|
2007-04-20 21:38:10 +00:00
|
|
|
if (isThreadLocal) {
|
|
|
|
if (TM.getRelocationModel() == Reloc::PIC_)
|
|
|
|
O << "@TLSGD"; // general dynamic TLS model
|
|
|
|
else
|
|
|
|
if (GV->isDeclaration())
|
|
|
|
O << "@INDNTPOFF"; // initial exec TLS model
|
|
|
|
else
|
|
|
|
O << "@NTPOFF"; // local exec TLS model
|
|
|
|
} else if (isMemOp) {
|
2007-01-18 22:27:12 +00:00
|
|
|
if (printGOT(TM, Subtarget)) {
|
2007-01-17 10:33:08 +00:00
|
|
|
if (Subtarget->GVRequiresExtraLoad(GV, TM, false))
|
2007-01-12 19:20:47 +00:00
|
|
|
O << "@GOT";
|
2007-01-17 10:33:08 +00:00
|
|
|
else
|
|
|
|
O << "@GOTOFF";
|
2007-01-18 22:27:12 +00:00
|
|
|
} else if (Subtarget->isPICStyleRIPRel() && !NotRIPRel) {
|
|
|
|
if ((GV->hasExternalLinkage() ||
|
|
|
|
GV->hasWeakLinkage() ||
|
|
|
|
GV->hasLinkOnceLinkage()) &&
|
|
|
|
TM.getRelocationModel() != Reloc::Static)
|
|
|
|
O << "@GOTPCREL";
|
|
|
|
// Use rip when possible to reduce code size, except when
|
|
|
|
// index or base register are also part of the address. e.g.
|
|
|
|
// foo(%rip)(%rcx,%rax,4) is not legal
|
|
|
|
O << "(%rip)";
|
|
|
|
}
|
2006-09-08 06:48:29 +00:00
|
|
|
}
|
|
|
|
|
2005-07-01 22:44:09 +00:00
|
|
|
return;
|
|
|
|
}
|
2006-02-06 23:41:19 +00:00
|
|
|
case MachineOperand::MO_ExternalSymbol: {
|
|
|
|
bool isCallOp = Modifier && !strcmp(Modifier, "call");
|
2007-01-12 19:20:47 +00:00
|
|
|
std::string Name(TAI->getGlobalPrefix());
|
|
|
|
Name += MO.getSymbolName();
|
2007-01-18 22:27:12 +00:00
|
|
|
if (isCallOp && printStub(TM, Subtarget)) {
|
2005-07-08 00:23:26 +00:00
|
|
|
FnStubs.insert(Name);
|
2007-01-18 01:49:58 +00:00
|
|
|
O << TAI->getPrivateGlobalPrefix() << Name << "$stub";
|
2005-07-08 00:23:26 +00:00
|
|
|
return;
|
|
|
|
}
|
2006-02-22 20:19:42 +00:00
|
|
|
if (!isCallOp) O << '$';
|
2007-01-12 19:20:47 +00:00
|
|
|
O << Name;
|
|
|
|
|
2007-01-18 22:27:12 +00:00
|
|
|
if (printGOT(TM, Subtarget)) {
|
2007-01-12 19:20:47 +00:00
|
|
|
std::string GOTName(TAI->getGlobalPrefix());
|
|
|
|
GOTName+="_GLOBAL_OFFSET_TABLE_";
|
|
|
|
if (Name == GOTName)
|
2007-01-18 22:27:12 +00:00
|
|
|
// HACK! Emit extra offset to PC during printing GOT offset to
|
|
|
|
// compensate for the size of popl instruction. The resulting code
|
|
|
|
// should look like:
|
2007-01-12 19:20:47 +00:00
|
|
|
// call .piclabel
|
|
|
|
// piclabel:
|
|
|
|
// popl %some_register
|
|
|
|
// addl $_GLOBAL_ADDRESS_TABLE_ + [.-piclabel], %some_register
|
2007-01-18 01:49:58 +00:00
|
|
|
O << " + [.-"
|
|
|
|
<< computePICLabel(getFunctionNumber(), TAI, Subtarget) << "]";
|
2007-01-12 19:20:47 +00:00
|
|
|
|
2007-01-18 22:27:12 +00:00
|
|
|
if (isCallOp)
|
|
|
|
O << "@PLT";
|
|
|
|
}
|
2006-09-08 06:48:29 +00:00
|
|
|
|
2007-01-18 22:27:12 +00:00
|
|
|
if (!isCallOp && Subtarget->isPICStyleRIPRel())
|
2006-09-08 06:48:29 +00:00
|
|
|
O << "(%rip)";
|
|
|
|
|
2005-07-01 22:44:09 +00:00
|
|
|
return;
|
2006-02-06 23:41:19 +00:00
|
|
|
}
|
2005-07-01 22:44:09 +00:00
|
|
|
default:
|
|
|
|
O << "<unknown operand type>"; return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-11-30 18:54:35 +00:00
|
|
|
void X86ATTAsmPrinter::printSSECC(const MachineInstr *MI, unsigned Op) {
|
2005-07-14 22:52:25 +00:00
|
|
|
unsigned char value = MI->getOperand(Op).getImmedValue();
|
|
|
|
assert(value <= 7 && "Invalid ssecc argument!");
|
|
|
|
switch (value) {
|
|
|
|
case 0: O << "eq"; break;
|
|
|
|
case 1: O << "lt"; break;
|
|
|
|
case 2: O << "le"; break;
|
|
|
|
case 3: O << "unord"; break;
|
|
|
|
case 4: O << "neq"; break;
|
|
|
|
case 5: O << "nlt"; break;
|
|
|
|
case 6: O << "nle"; break;
|
|
|
|
case 7: O << "ord"; break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-09-08 06:48:29 +00:00
|
|
|
void X86ATTAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op,
|
|
|
|
const char *Modifier){
|
2005-07-01 22:44:09 +00:00
|
|
|
assert(isMem(MI, Op) && "Invalid memory reference!");
|
2007-01-14 00:13:07 +00:00
|
|
|
MachineOperand BaseReg = MI->getOperand(Op);
|
|
|
|
MachineOperand IndexReg = MI->getOperand(Op+2);
|
2005-07-01 22:44:09 +00:00
|
|
|
const MachineOperand &DispSpec = MI->getOperand(Op+3);
|
|
|
|
|
2006-12-05 19:50:18 +00:00
|
|
|
bool NotRIPRel = IndexReg.getReg() || BaseReg.getReg();
|
2006-08-29 22:14:48 +00:00
|
|
|
if (DispSpec.isGlobalAddress() ||
|
|
|
|
DispSpec.isConstantPoolIndex() ||
|
|
|
|
DispSpec.isJumpTableIndex()) {
|
2006-12-05 19:50:18 +00:00
|
|
|
printOperand(MI, Op+3, "mem", NotRIPRel);
|
2005-07-01 22:44:09 +00:00
|
|
|
} else {
|
|
|
|
int DispVal = DispSpec.getImmedValue();
|
|
|
|
if (DispVal || (!IndexReg.getReg() && !BaseReg.getReg()))
|
|
|
|
O << DispVal;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (IndexReg.getReg() || BaseReg.getReg()) {
|
2007-01-14 00:13:07 +00:00
|
|
|
unsigned ScaleVal = MI->getOperand(Op+1).getImmedValue();
|
|
|
|
unsigned BaseRegOperand = 0, IndexRegOperand = 2;
|
|
|
|
|
|
|
|
// There are cases where we can end up with ESP/RSP in the indexreg slot.
|
|
|
|
// If this happens, swap the base/index register to support assemblers that
|
|
|
|
// don't work when the index is *SP.
|
|
|
|
if (IndexReg.getReg() == X86::ESP || IndexReg.getReg() == X86::RSP) {
|
|
|
|
assert(ScaleVal == 1 && "Scale not supported for stack pointer!");
|
|
|
|
std::swap(BaseReg, IndexReg);
|
|
|
|
std::swap(BaseRegOperand, IndexRegOperand);
|
2006-09-08 06:48:29 +00:00
|
|
|
}
|
2007-01-14 00:13:07 +00:00
|
|
|
|
|
|
|
O << "(";
|
|
|
|
if (BaseReg.getReg())
|
|
|
|
printOperand(MI, Op+BaseRegOperand, Modifier);
|
2005-07-01 22:44:09 +00:00
|
|
|
|
|
|
|
if (IndexReg.getReg()) {
|
|
|
|
O << ",";
|
2007-01-14 00:13:07 +00:00
|
|
|
printOperand(MI, Op+IndexRegOperand, Modifier);
|
2005-07-01 22:44:09 +00:00
|
|
|
if (ScaleVal != 1)
|
|
|
|
O << "," << ScaleVal;
|
|
|
|
}
|
|
|
|
O << ")";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-02-18 00:15:05 +00:00
|
|
|
void X86ATTAsmPrinter::printPICLabel(const MachineInstr *MI, unsigned Op) {
|
2007-01-18 01:49:58 +00:00
|
|
|
std::string label = computePICLabel(getFunctionNumber(), TAI, Subtarget);
|
2007-01-12 19:20:47 +00:00
|
|
|
O << label << "\n" << label << ":";
|
2006-02-18 00:15:05 +00:00
|
|
|
}
|
|
|
|
|
2006-04-28 23:11:40 +00:00
|
|
|
|
2006-04-28 23:19:39 +00:00
|
|
|
bool X86ATTAsmPrinter::printAsmMRegister(const MachineOperand &MO,
|
2006-04-28 23:11:40 +00:00
|
|
|
const char Mode) {
|
|
|
|
const MRegisterInfo &RI = *TM.getRegisterInfo();
|
|
|
|
unsigned Reg = MO.getReg();
|
|
|
|
switch (Mode) {
|
|
|
|
default: return true; // Unknown mode.
|
|
|
|
case 'b': // Print QImode register
|
2006-05-05 05:40:20 +00:00
|
|
|
Reg = getX86SubSuperRegister(Reg, MVT::i8);
|
2006-04-28 23:11:40 +00:00
|
|
|
break;
|
|
|
|
case 'h': // Print QImode high register
|
2006-05-05 05:40:20 +00:00
|
|
|
Reg = getX86SubSuperRegister(Reg, MVT::i8, true);
|
2006-04-28 23:11:40 +00:00
|
|
|
break;
|
|
|
|
case 'w': // Print HImode register
|
2006-05-05 05:40:20 +00:00
|
|
|
Reg = getX86SubSuperRegister(Reg, MVT::i16);
|
2006-04-28 23:11:40 +00:00
|
|
|
break;
|
|
|
|
case 'k': // Print SImode register
|
2006-05-05 05:40:20 +00:00
|
|
|
Reg = getX86SubSuperRegister(Reg, MVT::i32);
|
2006-04-28 23:11:40 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2006-05-05 05:40:20 +00:00
|
|
|
O << '%';
|
|
|
|
for (const char *Name = RI.get(Reg).Name; *Name; ++Name)
|
|
|
|
O << (char)tolower(*Name);
|
2006-04-28 23:11:40 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2006-04-28 21:19:05 +00:00
|
|
|
/// PrintAsmOperand - Print out an operand for an inline asm expression.
|
|
|
|
///
|
|
|
|
bool X86ATTAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
|
|
|
unsigned AsmVariant,
|
|
|
|
const char *ExtraCode) {
|
|
|
|
// Does this asm operand have a single letter operand modifier?
|
|
|
|
if (ExtraCode && ExtraCode[0]) {
|
|
|
|
if (ExtraCode[1] != 0) return true; // Unknown modifier.
|
|
|
|
|
|
|
|
switch (ExtraCode[0]) {
|
|
|
|
default: return true; // Unknown modifier.
|
2007-01-25 02:53:24 +00:00
|
|
|
case 'c': // Don't print "$" before a global var name or constant.
|
2006-10-31 20:12:30 +00:00
|
|
|
printOperand(MI, OpNo, "mem");
|
|
|
|
return false;
|
2006-04-28 23:11:40 +00:00
|
|
|
case 'b': // Print QImode register
|
|
|
|
case 'h': // Print QImode high register
|
|
|
|
case 'w': // Print HImode register
|
|
|
|
case 'k': // Print SImode register
|
2007-03-25 02:01:03 +00:00
|
|
|
if (MI->getOperand(OpNo).isReg())
|
|
|
|
return printAsmMRegister(MI->getOperand(OpNo), ExtraCode[0]);
|
|
|
|
printOperand(MI, OpNo);
|
|
|
|
return false;
|
2007-03-25 01:44:57 +00:00
|
|
|
|
|
|
|
case 'P': // Don't print @PLT, but do print as memory.
|
|
|
|
printOperand(MI, OpNo, "mem");
|
|
|
|
return false;
|
2006-04-28 21:19:05 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
printOperand(MI, OpNo);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool X86ATTAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
|
|
|
|
unsigned OpNo,
|
|
|
|
unsigned AsmVariant,
|
|
|
|
const char *ExtraCode) {
|
|
|
|
if (ExtraCode && ExtraCode[0])
|
|
|
|
return true; // Unknown modifier.
|
|
|
|
printMemReference(MI, OpNo);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2005-07-01 22:44:09 +00:00
|
|
|
/// printMachineInstruction -- Print out a single X86 LLVM instruction
|
|
|
|
/// MI in Intel syntax to the current output stream.
|
|
|
|
///
|
|
|
|
void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
|
|
|
|
++EmittedInsts;
|
2006-01-26 02:27:43 +00:00
|
|
|
|
2006-05-05 05:40:20 +00:00
|
|
|
// See if a truncate instruction can be turned into a nop.
|
|
|
|
switch (MI->getOpcode()) {
|
|
|
|
default: break;
|
2006-09-08 06:48:29 +00:00
|
|
|
case X86::TRUNC_64to32:
|
|
|
|
case X86::TRUNC_64to16:
|
|
|
|
case X86::TRUNC_32to16:
|
|
|
|
case X86::TRUNC_32to8:
|
|
|
|
case X86::TRUNC_16to8:
|
|
|
|
case X86::TRUNC_32_to8:
|
|
|
|
case X86::TRUNC_16_to8: {
|
2006-05-05 05:40:20 +00:00
|
|
|
const MachineOperand &MO0 = MI->getOperand(0);
|
|
|
|
const MachineOperand &MO1 = MI->getOperand(1);
|
|
|
|
unsigned Reg0 = MO0.getReg();
|
|
|
|
unsigned Reg1 = MO1.getReg();
|
2006-09-08 06:48:29 +00:00
|
|
|
unsigned Opc = MI->getOpcode();
|
|
|
|
if (Opc == X86::TRUNC_64to32)
|
|
|
|
Reg1 = getX86SubSuperRegister(Reg1, MVT::i32);
|
|
|
|
else if (Opc == X86::TRUNC_32to16 || Opc == X86::TRUNC_64to16)
|
2006-05-08 08:01:26 +00:00
|
|
|
Reg1 = getX86SubSuperRegister(Reg1, MVT::i16);
|
2006-05-05 05:40:20 +00:00
|
|
|
else
|
2006-05-08 08:01:26 +00:00
|
|
|
Reg1 = getX86SubSuperRegister(Reg1, MVT::i8);
|
2006-09-06 18:34:40 +00:00
|
|
|
O << TAI->getCommentString() << " TRUNCATE ";
|
2006-05-08 08:01:26 +00:00
|
|
|
if (Reg0 != Reg1)
|
|
|
|
O << "\n\t";
|
2006-05-05 05:40:20 +00:00
|
|
|
break;
|
|
|
|
}
|
2006-09-08 06:48:29 +00:00
|
|
|
case X86::PsMOVZX64rr32:
|
|
|
|
O << TAI->getCommentString() << " ZERO-EXTEND " << "\n\t";
|
|
|
|
break;
|
2006-05-05 05:40:20 +00:00
|
|
|
}
|
|
|
|
|
2005-07-01 22:44:09 +00:00
|
|
|
// Call the autogenerated instruction printer routines.
|
|
|
|
printInstruction(MI);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Include the auto-generated portion of the assembly writer.
|
|
|
|
#include "X86GenAsmWriter.inc"
|
|
|
|
|