mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-03 17:31:50 +00:00
d976c21241
so that va_start/va_arg/et.al. will walk arguments correctly for Cell SPU. N.B.: Because neither clang nor llvm-gcc-4.2 can be built for CellSPU, this is still unexorcised code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58415 91177308-0d34-0410-b5e6-96231b3b80d8
646 lines
21 KiB
C++
646 lines
21 KiB
C++
//===-- SPUAsmPrinter.cpp - Print machine instrs to Cell SPU assembly -------=//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file 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 Cell SPU assembly language. This printer
|
|
// is the output mechanism used by `llc'.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "asmprinter"
|
|
#include "SPU.h"
|
|
#include "SPUTargetMachine.h"
|
|
#include "llvm/Constants.h"
|
|
#include "llvm/DerivedTypes.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Assembly/Writer.h"
|
|
#include "llvm/CodeGen/AsmPrinter.h"
|
|
#include "llvm/CodeGen/DwarfWriter.h"
|
|
#include "llvm/CodeGen/MachineModuleInfo.h"
|
|
#include "llvm/CodeGen/MachineFunctionPass.h"
|
|
#include "llvm/CodeGen/MachineInstr.h"
|
|
#include "llvm/Support/Mangler.h"
|
|
#include "llvm/Support/MathExtras.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/Debug.h"
|
|
#include "llvm/Support/Compiler.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/Target/TargetAsmInfo.h"
|
|
#include "llvm/Target/TargetRegisterInfo.h"
|
|
#include "llvm/Target/TargetInstrInfo.h"
|
|
#include "llvm/Target/TargetOptions.h"
|
|
#include "llvm/ADT/Statistic.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
#include <set>
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
STATISTIC(EmittedInsts, "Number of machine instrs printed");
|
|
|
|
const std::string bss_section(".bss");
|
|
|
|
struct VISIBILITY_HIDDEN SPUAsmPrinter : public AsmPrinter {
|
|
std::set<std::string> FnStubs, GVStubs;
|
|
|
|
SPUAsmPrinter(raw_ostream &O, TargetMachine &TM, const TargetAsmInfo *T) :
|
|
AsmPrinter(O, TM, T)
|
|
{
|
|
}
|
|
|
|
virtual const char *getPassName() const {
|
|
return "STI CBEA SPU Assembly Printer";
|
|
}
|
|
|
|
SPUTargetMachine &getTM() {
|
|
return static_cast<SPUTargetMachine&>(TM);
|
|
}
|
|
|
|
/// printInstruction - This method is automatically generated by tablegen
|
|
/// from the instruction set description. This method returns true if the
|
|
/// machine instruction was sufficiently described to print it, otherwise it
|
|
/// returns false.
|
|
bool printInstruction(const MachineInstr *MI);
|
|
|
|
void printMachineInstruction(const MachineInstr *MI);
|
|
void printOp(const MachineOperand &MO);
|
|
|
|
/// printRegister - Print register according to target requirements.
|
|
///
|
|
void printRegister(const MachineOperand &MO, bool R0AsZero) {
|
|
unsigned RegNo = MO.getReg();
|
|
assert(TargetRegisterInfo::isPhysicalRegister(RegNo) &&
|
|
"Not physreg??");
|
|
O << TM.getRegisterInfo()->get(RegNo).AsmName;
|
|
}
|
|
|
|
void printOperand(const MachineInstr *MI, unsigned OpNo) {
|
|
const MachineOperand &MO = MI->getOperand(OpNo);
|
|
if (MO.isReg()) {
|
|
assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg())&&"Not physreg??");
|
|
O << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
|
|
} else if (MO.isImm()) {
|
|
O << MO.getImm();
|
|
} else {
|
|
printOp(MO);
|
|
}
|
|
}
|
|
|
|
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
|
unsigned AsmVariant, const char *ExtraCode);
|
|
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
|
|
unsigned AsmVariant, const char *ExtraCode);
|
|
|
|
|
|
void
|
|
printS7ImmOperand(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
int value = MI->getOperand(OpNo).getImm();
|
|
value = (value << (32 - 7)) >> (32 - 7);
|
|
|
|
assert((value >= -(1 << 8) && value <= (1 << 7) - 1)
|
|
&& "Invalid s7 argument");
|
|
O << value;
|
|
}
|
|
|
|
void
|
|
printU7ImmOperand(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
unsigned int value = MI->getOperand(OpNo).getImm();
|
|
assert(value < (1 << 8) && "Invalid u7 argument");
|
|
O << value;
|
|
}
|
|
|
|
void
|
|
printMemRegImmS7(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
char value = MI->getOperand(OpNo).getImm();
|
|
O << (int) value;
|
|
O << "(";
|
|
printOperand(MI, OpNo+1);
|
|
O << ")";
|
|
}
|
|
|
|
void
|
|
printS16ImmOperand(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
O << (short) MI->getOperand(OpNo).getImm();
|
|
}
|
|
|
|
void
|
|
printU16ImmOperand(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
O << (unsigned short)MI->getOperand(OpNo).getImm();
|
|
}
|
|
|
|
void
|
|
printU32ImmOperand(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
O << (unsigned)MI->getOperand(OpNo).getImm();
|
|
}
|
|
|
|
void
|
|
printMemRegReg(const MachineInstr *MI, unsigned OpNo) {
|
|
// When used as the base register, r0 reads constant zero rather than
|
|
// the value contained in the register. For this reason, the darwin
|
|
// assembler requires that we print r0 as 0 (no r) when used as the base.
|
|
const MachineOperand &MO = MI->getOperand(OpNo);
|
|
O << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
|
|
O << ", ";
|
|
printOperand(MI, OpNo+1);
|
|
}
|
|
|
|
void
|
|
printU18ImmOperand(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
unsigned int value = MI->getOperand(OpNo).getImm();
|
|
assert(value <= (1 << 19) - 1 && "Invalid u18 argument");
|
|
O << value;
|
|
}
|
|
|
|
void
|
|
printS10ImmOperand(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
short value = (short) (((int) MI->getOperand(OpNo).getImm() << 16)
|
|
>> 16);
|
|
assert((value >= -(1 << 9) && value <= (1 << 9) - 1)
|
|
&& "Invalid s10 argument");
|
|
O << value;
|
|
}
|
|
|
|
void
|
|
printU10ImmOperand(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
short value = (short) (((int) MI->getOperand(OpNo).getImm() << 16)
|
|
>> 16);
|
|
assert((value <= (1 << 10) - 1) && "Invalid u10 argument");
|
|
O << value;
|
|
}
|
|
|
|
void
|
|
printMemRegImmS10(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
const MachineOperand &MO = MI->getOperand(OpNo);
|
|
assert(MO.isImm() &&
|
|
"printMemRegImmS10 first operand is not immedate");
|
|
int64_t value = int64_t(MI->getOperand(OpNo).getImm());
|
|
assert((value >= -(1 << (9+4)) && value <= (1 << (9+4)) - 1)
|
|
&& "Invalid dform s10 offset argument");
|
|
O << value << "(";
|
|
printOperand(MI, OpNo+1);
|
|
O << ")";
|
|
}
|
|
|
|
void
|
|
printAddr256K(const MachineInstr *MI, unsigned OpNo)
|
|
{
|
|
/* Note: operand 1 is an offset or symbol name. */
|
|
if (MI->getOperand(OpNo).isImm()) {
|
|
printS16ImmOperand(MI, OpNo);
|
|
} else {
|
|
printOp(MI->getOperand(OpNo));
|
|
if (MI->getOperand(OpNo+1).isImm()) {
|
|
int displ = int(MI->getOperand(OpNo+1).getImm());
|
|
if (displ > 0)
|
|
O << "+" << displ;
|
|
else if (displ < 0)
|
|
O << displ;
|
|
}
|
|
}
|
|
}
|
|
|
|
void printCallOperand(const MachineInstr *MI, unsigned OpNo) {
|
|
printOp(MI->getOperand(OpNo));
|
|
}
|
|
|
|
void printPCRelativeOperand(const MachineInstr *MI, unsigned OpNo) {
|
|
printOp(MI->getOperand(OpNo));
|
|
O << "-.";
|
|
}
|
|
|
|
void printSymbolHi(const MachineInstr *MI, unsigned OpNo) {
|
|
if (MI->getOperand(OpNo).isImm()) {
|
|
printS16ImmOperand(MI, OpNo);
|
|
} else {
|
|
printOp(MI->getOperand(OpNo));
|
|
O << "@h";
|
|
}
|
|
}
|
|
|
|
void printSymbolLo(const MachineInstr *MI, unsigned OpNo) {
|
|
if (MI->getOperand(OpNo).isImm()) {
|
|
printS16ImmOperand(MI, OpNo);
|
|
} else {
|
|
printOp(MI->getOperand(OpNo));
|
|
O << "@l";
|
|
}
|
|
}
|
|
|
|
/// Print local store address
|
|
void printSymbolLSA(const MachineInstr *MI, unsigned OpNo) {
|
|
printOp(MI->getOperand(OpNo));
|
|
}
|
|
|
|
void printROTHNeg7Imm(const MachineInstr *MI, unsigned OpNo) {
|
|
if (MI->getOperand(OpNo).isImm()) {
|
|
int value = (int) MI->getOperand(OpNo).getImm();
|
|
assert((value >= 0 && value < 16)
|
|
&& "Invalid negated immediate rotate 7-bit argument");
|
|
O << -value;
|
|
} else {
|
|
assert(0 &&"Invalid/non-immediate rotate amount in printRotateNeg7Imm");
|
|
}
|
|
}
|
|
|
|
void printROTNeg7Imm(const MachineInstr *MI, unsigned OpNo) {
|
|
if (MI->getOperand(OpNo).isImm()) {
|
|
int value = (int) MI->getOperand(OpNo).getImm();
|
|
assert((value >= 0 && value < 32)
|
|
&& "Invalid negated immediate rotate 7-bit argument");
|
|
O << -value;
|
|
} else {
|
|
assert(0 &&"Invalid/non-immediate rotate amount in printRotateNeg7Imm");
|
|
}
|
|
}
|
|
|
|
virtual bool runOnMachineFunction(MachineFunction &F) = 0;
|
|
virtual bool doFinalization(Module &M) = 0;
|
|
};
|
|
|
|
/// LinuxAsmPrinter - SPU assembly printer, customized for Linux
|
|
struct VISIBILITY_HIDDEN LinuxAsmPrinter : public SPUAsmPrinter {
|
|
|
|
DwarfWriter DW;
|
|
MachineModuleInfo *MMI;
|
|
|
|
LinuxAsmPrinter(raw_ostream &O, SPUTargetMachine &TM,
|
|
const TargetAsmInfo *T) :
|
|
SPUAsmPrinter(O, TM, T),
|
|
DW(O, this, T),
|
|
MMI(0)
|
|
{ }
|
|
|
|
virtual const char *getPassName() const {
|
|
return "STI CBEA SPU Assembly Printer";
|
|
}
|
|
|
|
bool runOnMachineFunction(MachineFunction &F);
|
|
bool doInitialization(Module &M);
|
|
bool doFinalization(Module &M);
|
|
|
|
void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
AU.addRequired<MachineModuleInfo>();
|
|
SPUAsmPrinter::getAnalysisUsage(AU);
|
|
}
|
|
|
|
};
|
|
} // end of anonymous namespace
|
|
|
|
// Include the auto-generated portion of the assembly writer
|
|
#include "SPUGenAsmWriter.inc"
|
|
|
|
void SPUAsmPrinter::printOp(const MachineOperand &MO) {
|
|
switch (MO.getType()) {
|
|
case MachineOperand::MO_Immediate:
|
|
cerr << "printOp() does not handle immediate values\n";
|
|
abort();
|
|
return;
|
|
|
|
case MachineOperand::MO_MachineBasicBlock:
|
|
printBasicBlockLabel(MO.getMBB());
|
|
return;
|
|
case MachineOperand::MO_JumpTableIndex:
|
|
O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
|
|
<< '_' << MO.getIndex();
|
|
return;
|
|
case MachineOperand::MO_ConstantPoolIndex:
|
|
O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
|
|
<< '_' << MO.getIndex();
|
|
return;
|
|
case MachineOperand::MO_ExternalSymbol:
|
|
// Computing the address of an external symbol, not calling it.
|
|
if (TM.getRelocationModel() != Reloc::Static) {
|
|
std::string Name(TAI->getGlobalPrefix()); Name += MO.getSymbolName();
|
|
GVStubs.insert(Name);
|
|
O << "L" << Name << "$non_lazy_ptr";
|
|
return;
|
|
}
|
|
O << TAI->getGlobalPrefix() << MO.getSymbolName();
|
|
return;
|
|
case MachineOperand::MO_GlobalAddress: {
|
|
// Computing the address of a global symbol, not calling it.
|
|
GlobalValue *GV = MO.getGlobal();
|
|
std::string Name = Mang->getValueName(GV);
|
|
|
|
// External or weakly linked global variables need non-lazily-resolved
|
|
// stubs
|
|
if (TM.getRelocationModel() != Reloc::Static) {
|
|
if (((GV->isDeclaration() || GV->hasWeakLinkage() ||
|
|
GV->hasLinkOnceLinkage() || GV->hasCommonLinkage()))) {
|
|
GVStubs.insert(Name);
|
|
O << "L" << Name << "$non_lazy_ptr";
|
|
return;
|
|
}
|
|
}
|
|
O << Name;
|
|
|
|
if (GV->hasExternalWeakLinkage())
|
|
ExtWeakSymbols.insert(GV);
|
|
return;
|
|
}
|
|
|
|
default:
|
|
O << "<unknown operand type: " << MO.getType() << ">";
|
|
return;
|
|
}
|
|
}
|
|
|
|
/// PrintAsmOperand - Print out an operand for an inline asm expression.
|
|
///
|
|
bool SPUAsmPrinter::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.
|
|
case 'L': // Write second word of DImode reference.
|
|
// Verify that this operand has two consecutive registers.
|
|
if (!MI->getOperand(OpNo).isReg() ||
|
|
OpNo+1 == MI->getNumOperands() ||
|
|
!MI->getOperand(OpNo+1).isReg())
|
|
return true;
|
|
++OpNo; // Return the high-part.
|
|
break;
|
|
}
|
|
}
|
|
|
|
printOperand(MI, OpNo);
|
|
return false;
|
|
}
|
|
|
|
bool SPUAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
|
|
unsigned OpNo,
|
|
unsigned AsmVariant,
|
|
const char *ExtraCode) {
|
|
if (ExtraCode && ExtraCode[0])
|
|
return true; // Unknown modifier.
|
|
printMemRegReg(MI, OpNo);
|
|
return false;
|
|
}
|
|
|
|
/// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax
|
|
/// to the current output stream.
|
|
///
|
|
void SPUAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
|
|
++EmittedInsts;
|
|
printInstruction(MI);
|
|
}
|
|
|
|
/// runOnMachineFunction - This uses the printMachineInstruction()
|
|
/// method to print assembly for each instruction.
|
|
///
|
|
bool
|
|
LinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF)
|
|
{
|
|
SetupMachineFunction(MF);
|
|
O << "\n\n";
|
|
|
|
// Print out constants referenced by the function
|
|
EmitConstantPool(MF.getConstantPool());
|
|
|
|
// Print out labels for the function.
|
|
const Function *F = MF.getFunction();
|
|
|
|
SwitchToSection(TAI->SectionForGlobal(F));
|
|
EmitAlignment(3, F);
|
|
|
|
switch (F->getLinkage()) {
|
|
default: assert(0 && "Unknown linkage type!");
|
|
case Function::InternalLinkage: // Symbols default to internal.
|
|
break;
|
|
case Function::ExternalLinkage:
|
|
O << "\t.global\t" << CurrentFnName << "\n"
|
|
<< "\t.type\t" << CurrentFnName << ", @function\n";
|
|
break;
|
|
case Function::WeakLinkage:
|
|
case Function::LinkOnceLinkage:
|
|
O << "\t.global\t" << CurrentFnName << "\n";
|
|
O << "\t.weak_definition\t" << CurrentFnName << "\n";
|
|
break;
|
|
}
|
|
O << CurrentFnName << ":\n";
|
|
|
|
// Emit pre-function debug information.
|
|
DW.BeginFunction(&MF);
|
|
|
|
// 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.
|
|
if (I != MF.begin()) {
|
|
printBasicBlockLabel(I, true, true);
|
|
O << '\n';
|
|
}
|
|
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
|
|
II != E; ++II) {
|
|
// Print the assembly for the instruction.
|
|
printMachineInstruction(II);
|
|
}
|
|
}
|
|
|
|
O << "\t.size\t" << CurrentFnName << ",.-" << CurrentFnName << "\n";
|
|
|
|
// Print out jump tables referenced by the function.
|
|
EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
|
|
|
|
// Emit post-function debug information.
|
|
DW.EndFunction(&MF);
|
|
|
|
// We didn't modify anything.
|
|
return false;
|
|
}
|
|
|
|
|
|
bool LinuxAsmPrinter::doInitialization(Module &M) {
|
|
bool Result = AsmPrinter::doInitialization(M);
|
|
SwitchToTextSection("\t.text");
|
|
// Emit initial debug information.
|
|
DW.BeginModule(&M);
|
|
MMI = getAnalysisToUpdate<MachineModuleInfo>();
|
|
DW.SetModuleInfo(MMI);
|
|
return Result;
|
|
}
|
|
|
|
bool LinuxAsmPrinter::doFinalization(Module &M) {
|
|
const TargetData *TD = TM.getTargetData();
|
|
|
|
// Print out module-level global variables here.
|
|
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
|
|
I != E; ++I) {
|
|
if (!I->hasInitializer()) continue; // External global require no code
|
|
|
|
// Check to see if this is a special global used by LLVM, if so, emit it.
|
|
if (EmitSpecialLLVMGlobal(I))
|
|
continue;
|
|
|
|
std::string name = Mang->getValueName(I);
|
|
Constant *C = I->getInitializer();
|
|
unsigned Size = TD->getTypeStoreSize(C->getType());
|
|
unsigned Align = TD->getPreferredAlignmentLog(I);
|
|
|
|
if (C->isNullValue() && /* FIXME: Verify correct */
|
|
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
|
|
I->hasLinkOnceLinkage() || I->hasCommonLinkage() ||
|
|
(I->hasExternalLinkage() && !I->hasSection()))) {
|
|
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
|
|
if (I->hasExternalLinkage()) {
|
|
// External linkage globals -> .bss section
|
|
// FIXME: Want to set the global variable's section so that
|
|
// SwitchToDataSection emits the ".section" directive
|
|
SwitchToDataSection("\t.section\t.bss", I);
|
|
O << "\t.global\t" << name << '\n';
|
|
O << "\t.align\t" << Align << '\n';
|
|
O << "\t.type\t" << name << ", @object\n";
|
|
O << "\t.size\t" << name << ", " << Size << '\n';
|
|
O << name << ":\n";
|
|
O << "\t.zero\t" << Size;
|
|
} else if (I->hasInternalLinkage()) {
|
|
SwitchToDataSection("\t.data", I);
|
|
O << ".local " << name << "\n";
|
|
O << TAI->getCOMMDirective() << name << "," << Size << "," << Align << "\n";
|
|
} else {
|
|
SwitchToDataSection("\t.data", I);
|
|
O << ".comm " << name << "," << Size;
|
|
}
|
|
O << "\t\t# '" << I->getName() << "'\n";
|
|
} else {
|
|
switch (I->getLinkage()) {
|
|
case GlobalValue::LinkOnceLinkage:
|
|
case GlobalValue::WeakLinkage:
|
|
case GlobalValue::CommonLinkage:
|
|
O << "\t.global " << name << '\n'
|
|
<< "\t.weak_definition " << name << '\n';
|
|
SwitchToDataSection(".section __DATA,__datacoal_nt,coalesced", I);
|
|
break;
|
|
case GlobalValue::AppendingLinkage:
|
|
// FIXME: appending linkage variables should go into a section of
|
|
// their name or something. For now, just emit them as external.
|
|
case GlobalValue::ExternalLinkage:
|
|
// If external or appending, declare as a global symbol
|
|
O << "\t.global " << name << "\n";
|
|
// FALL THROUGH
|
|
case GlobalValue::InternalLinkage:
|
|
if (I->isConstant()) {
|
|
const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
|
|
if (TAI->getCStringSection() && CVA && CVA->isCString()) {
|
|
SwitchToDataSection("\t.cstring", I);
|
|
break;
|
|
}
|
|
}
|
|
|
|
SwitchToDataSection("\t.data", I);
|
|
break;
|
|
default:
|
|
cerr << "Unknown linkage type!";
|
|
abort();
|
|
}
|
|
|
|
EmitAlignment(Align, I);
|
|
O << name << ":\t\t\t\t# '" << I->getName() << "'\n";
|
|
|
|
// If the initializer is a extern weak symbol, remember to emit the weak
|
|
// reference!
|
|
if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
|
|
if (GV->hasExternalWeakLinkage())
|
|
ExtWeakSymbols.insert(GV);
|
|
|
|
EmitGlobalConstant(C);
|
|
O << '\n';
|
|
}
|
|
}
|
|
|
|
// Output stubs for dynamically-linked functions
|
|
if (TM.getRelocationModel() == Reloc::PIC_) {
|
|
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
|
|
i != e; ++i) {
|
|
SwitchToTextSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
|
|
"pure_instructions,32");
|
|
EmitAlignment(4);
|
|
O << "L" << *i << "$stub:\n";
|
|
O << "\t.indirect_symbol " << *i << "\n";
|
|
O << "\tmflr r0\n";
|
|
O << "\tbcl 20,31,L0$" << *i << "\n";
|
|
O << "L0$" << *i << ":\n";
|
|
O << "\tmflr r11\n";
|
|
O << "\taddis r11,r11,ha16(L" << *i << "$lazy_ptr-L0$" << *i << ")\n";
|
|
O << "\tmtlr r0\n";
|
|
O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n";
|
|
O << "\tmtctr r12\n";
|
|
O << "\tbctr\n";
|
|
SwitchToDataSection(".lazy_symbol_pointer");
|
|
O << "L" << *i << "$lazy_ptr:\n";
|
|
O << "\t.indirect_symbol " << *i << "\n";
|
|
O << "\t.long dyld_stub_binding_helper\n";
|
|
}
|
|
} else {
|
|
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
|
|
i != e; ++i) {
|
|
SwitchToTextSection(".section __TEXT,__symbol_stub1,symbol_stubs,"
|
|
"pure_instructions,16");
|
|
EmitAlignment(4);
|
|
O << "L" << *i << "$stub:\n";
|
|
O << "\t.indirect_symbol " << *i << "\n";
|
|
O << "\tlis r11,ha16(L" << *i << "$lazy_ptr)\n";
|
|
O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n";
|
|
O << "\tmtctr r12\n";
|
|
O << "\tbctr\n";
|
|
SwitchToDataSection(".lazy_symbol_pointer");
|
|
O << "L" << *i << "$lazy_ptr:\n";
|
|
O << "\t.indirect_symbol " << *i << "\n";
|
|
O << "\t.long dyld_stub_binding_helper\n";
|
|
}
|
|
}
|
|
|
|
O << "\n";
|
|
|
|
// Output stubs for external and common global variables.
|
|
if (GVStubs.begin() != GVStubs.end()) {
|
|
SwitchToDataSection(".non_lazy_symbol_pointer");
|
|
for (std::set<std::string>::iterator I = GVStubs.begin(),
|
|
E = GVStubs.end(); I != E; ++I) {
|
|
O << "L" << *I << "$non_lazy_ptr:\n";
|
|
O << "\t.indirect_symbol " << *I << "\n";
|
|
O << "\t.long\t0\n";
|
|
}
|
|
}
|
|
|
|
// Emit initial debug information.
|
|
DW.EndModule();
|
|
|
|
// Emit ident information
|
|
O << "\t.ident\t\"(llvm 2.2+) STI CBEA Cell SPU backend\"\n";
|
|
|
|
return AsmPrinter::doFinalization(M);
|
|
}
|
|
|
|
|
|
|
|
/// createSPUCodePrinterPass - Returns a pass that prints the Cell SPU
|
|
/// assembly code for a MachineFunction to the given output stream, in a format
|
|
/// that the Linux SPU assembler can deal with.
|
|
///
|
|
FunctionPass *llvm::createSPUAsmPrinterPass(raw_ostream &o,
|
|
SPUTargetMachine &tm) {
|
|
return new LinuxAsmPrinter(o, tm, tm.getTargetAsmInfo());
|
|
}
|
|
|