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convert macho stub emission to use SwitchToSection instead of

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textual sections.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78007 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-08-03 22:18:15 +00:00
parent 865aaf00ad
commit f61159b574
1 changed files with 49 additions and 33 deletions
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82
lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
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@ -1269,49 +1269,65 @@ void ARMAsmPrinter::PrintGlobalVariable(const GlobalVariable* GVar) {
bool ARMAsmPrinter::doFinalization(Module &M) {
if (Subtarget->isTargetDarwin()) {
SwitchToDataSection("");
// All darwin targets use mach-o.
TargetLoweringObjectFileMachO &TLOFMacho =
static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
O << '\n';
// Output stubs for dynamically-linked functions
for (StringMap<FnStubInfo>::iterator I = FnStubs.begin(), E = FnStubs.end();
I != E; ++I) {
const FnStubInfo &Info = I->second;
if (!FnStubs.empty()) {
const MCSection *StubSection;
if (TM.getRelocationModel() == Reloc::PIC_)
SwitchToTextSection(".section __TEXT,__picsymbolstub4,symbol_stubs,"
"none,16", 0);
StubSection = TLOFMacho.getMachOSection(".section __TEXT,__picsymbolstu"
"b4,symbol_stubs,none,16", true,
SectionKind::getText());
else
SwitchToTextSection(".section __TEXT,__symbol_stub4,symbol_stubs,"
"none,12", 0);
StubSection = TLOFMacho.getMachOSection(".section __TEXT,__symbol_stub4"
",symbol_stubs,none,12", true,
SectionKind::getText());
EmitAlignment(2);
O << "\t.code\t32\n";
const MCSection *LazySymbolPointerSection
= TLOFMacho.getMachOSection(".lazy_symbol_pointer", true,
SectionKind::getMetadata());
// Output stubs for dynamically-linked functions
for (StringMap<FnStubInfo>::iterator I = FnStubs.begin(),
E = FnStubs.end(); I != E; ++I) {
const FnStubInfo &Info = I->second;
SwitchToSection(StubSection);
EmitAlignment(2);
O << "\t.code\t32\n";
O << Info.Stub << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << '\n';
O << "\tldr ip, " << Info.SLP << '\n';
if (TM.getRelocationModel() == Reloc::PIC_) {
O << Info.SCV << ":\n";
O << "\tadd ip, pc, ip\n";
O << Info.Stub << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << '\n';
O << "\tldr ip, " << Info.SLP << '\n';
if (TM.getRelocationModel() == Reloc::PIC_) {
O << Info.SCV << ":\n";
O << "\tadd ip, pc, ip\n";
}
O << "\tldr pc, [ip, #0]\n";
O << Info.SLP << ":\n";
O << "\t.long\t" << Info.LazyPtr;
if (TM.getRelocationModel() == Reloc::PIC_)
O << "-(" << Info.SCV << "+8)";
O << '\n';
SwitchToSection(LazySymbolPointerSection);
O << Info.LazyPtr << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << "\n";
O << "\t.long\tdyld_stub_binding_helper\n";
}
O << "\tldr pc, [ip, #0]\n";
O << Info.SLP << ":\n";
O << "\t.long\t" << Info.LazyPtr;
if (TM.getRelocationModel() == Reloc::PIC_)
O << "-(" << Info.SCV << "+8)";
O << '\n';
SwitchToDataSection(".lazy_symbol_pointer", 0);
O << Info.LazyPtr << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << "\n";
O << "\t.long\tdyld_stub_binding_helper\n";
}
O << '\n';
// Output non-lazy-pointers for external and common global variables.
if (!GVNonLazyPtrs.empty()) {
SwitchToDataSection("\t.non_lazy_symbol_pointer", 0);
for (StringMap<std::string>::iterator I = GVNonLazyPtrs.begin(),
E = GVNonLazyPtrs.end(); I != E; ++I) {
SwitchToSection(TLOFMacho.getMachOSection(".non_lazy_symbol_pointer",
true,
SectionKind::getMetadata()));
for (StringMap<std::string>::iterator I = GVNonLazyPtrs.begin(),
E = GVNonLazyPtrs.end(); I != E; ++I) {
O << I->second << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << "\n";
O << "\t.long\t0\n";