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split function stub printing out to its own function, 

no functionality change.

llvm-svn: 94030
This commit is contained in:
Chris Lattner 2010-01-20 21:19:44 +00:00
parent 1ff4794cbb
commit 2f7c279257
1 changed files with 58 additions and 46 deletions
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104
llvm/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
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@ -390,6 +390,8 @@ namespace {
bool doFinalization(Module &M);
void EmitStartOfAsmFile(Module &M);
void EmitFunctionStubs();
void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<MachineModuleInfo>();
@ -842,31 +844,25 @@ void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) {
OutStreamer.SwitchSection(getObjFileLowering().getTextSection());
}
bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
const TargetData *TD = TM.getTargetData();
bool isPPC64 = TD->getPointerSizeInBits() == 64;
// Darwin/PPC always uses mach-o.
void PPCDarwinAsmPrinter::EmitFunctionStubs() {
bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64;
TargetLoweringObjectFileMachO &TLOFMacho =
static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
MachineModuleInfoMachO &MMIMacho =
MMI->getObjFileInfo<MachineModuleInfoMachO>();
const MCSection *LSPSection = 0;
if (!FnStubs.empty()) // .lazy_symbol_pointer
LSPSection = TLOFMacho.getLazySymbolPointerSection();
// .lazy_symbol_pointer
const MCSection *LSPSection = TLOFMacho.getLazySymbolPointerSection();
// Output stubs for dynamically-linked functions
if (TM.getRelocationModel() == Reloc::PIC_ && !FnStubs.empty()) {
if (TM.getRelocationModel() == Reloc::PIC_) {
const MCSection *StubSection =
TLOFMacho.getMachOSection("__TEXT", "__picsymbolstub1",
MCSectionMachO::S_SYMBOL_STUBS |
MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
32, SectionKind::getText());
TLOFMacho.getMachOSection("__TEXT", "__picsymbolstub1",
MCSectionMachO::S_SYMBOL_STUBS |
MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
32, SectionKind::getText());
// FIXME: This is emitting in nondeterminstic order!
for (DenseMap<const MCSymbol*, FnStubInfo>::iterator I =
FnStubs.begin(), E = FnStubs.end(); I != E; ++I) {
FnStubs.begin(), E = FnStubs.end(); I != E; ++I) {
OutStreamer.SwitchSection(StubSection);
EmitAlignment(4);
const FnStubInfo &Info = I->second;
@ -877,10 +873,10 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
O << *Info.AnonSymbol << ":\n";
O << "\tmflr r11\n";
O << "\taddis r11,r11,ha16(" << *Info.LazyPtr << '-' << *Info.AnonSymbol
<< ")\n";
<< ")\n";
O << "\tmtlr r0\n";
O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(" << *Info.LazyPtr
<< '-' << *Info.AnonSymbol << ")(r11)\n";
<< '-' << *Info.AnonSymbol << ")(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
@ -889,34 +885,50 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
O << "\t.indirect_symbol " << *I->first << '\n';
O << (isPPC64 ? "\t.quad" : "\t.long") << " dyld_stub_binding_helper\n";
}
} else if (!FnStubs.empty()) {
const MCSection *StubSection =
TLOFMacho.getMachOSection("__TEXT","__symbol_stub1",
MCSectionMachO::S_SYMBOL_STUBS |
MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
16, SectionKind::getText());
// FIXME: This is emitting in nondeterminstic order!
for (DenseMap<const MCSymbol*, FnStubInfo>::iterator I = FnStubs.begin(),
E = FnStubs.end(); I != E; ++I) {
OutStreamer.SwitchSection(StubSection);
EmitAlignment(4);
const FnStubInfo &Info = I->second;
O << *Info.Stub << ":\n";
O << "\t.indirect_symbol " << *I->first << '\n';
O << "\tlis r11,ha16(" << *Info.LazyPtr << ")\n";
O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(" << *Info.LazyPtr
<< ")(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
OutStreamer.SwitchSection(LSPSection);
O << *Info.LazyPtr << ":\n";
O << "\t.indirect_symbol " << *I->first << '\n';
O << (isPPC64 ? "\t.quad" : "\t.long") << " dyld_stub_binding_helper\n";
}
O << '\n';
return;
}
const MCSection *StubSection =
TLOFMacho.getMachOSection("__TEXT","__symbol_stub1",
MCSectionMachO::S_SYMBOL_STUBS |
MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
16, SectionKind::getText());
// FIXME: This is emitting in nondeterminstic order!
for (DenseMap<const MCSymbol*, FnStubInfo>::iterator I = FnStubs.begin(),
E = FnStubs.end(); I != E; ++I) {
OutStreamer.SwitchSection(StubSection);
EmitAlignment(4);
const FnStubInfo &Info = I->second;
O << *Info.Stub << ":\n";
O << "\t.indirect_symbol " << *I->first << '\n';
O << "\tlis r11,ha16(" << *Info.LazyPtr << ")\n";
O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(" << *Info.LazyPtr
<< ")(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
OutStreamer.SwitchSection(LSPSection);
O << *Info.LazyPtr << ":\n";
O << "\t.indirect_symbol " << *I->first << '\n';
O << (isPPC64 ? "\t.quad" : "\t.long") << " dyld_stub_binding_helper\n";
}
O << '\n';
}
bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64;
// Darwin/PPC always uses mach-o.
TargetLoweringObjectFileMachO &TLOFMacho =
static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
MachineModuleInfoMachO &MMIMacho =
MMI->getObjFileInfo<MachineModuleInfoMachO>();
if (!FnStubs.empty())
EmitFunctionStubs();
if (MAI->doesSupportExceptionHandling() && MMI) {
// Add the (possibly multiple) personalities to the set of global values.