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properly use MCSymbol to print the strings aquired from getNameWithPrefix.

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llvm-svn: 93332
This commit is contained in:
Chris Lattner 2010-01-13 19:00:57 +00:00
parent 5db856d384
commit 6b0af1d420
1 changed files with 64 additions and 25 deletions
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89
lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
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@ -32,6 +32,7 @@
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
@ -58,33 +59,55 @@ namespace {
class PPCAsmPrinter : public AsmPrinter {
protected:
struct FnStubInfo {
std::string Stub, LazyPtr, AnonSymbol;
std::string StubName, LazyPtrName, AnonSymbolName;
MCSymbol *StubSym, *LazyPtrSym, *AnonSymbolSym;
FnStubInfo() {}
FnStubInfo() {
StubSym = LazyPtrSym = AnonSymbolSym = 0;
}
void Init(const GlobalValue *GV, Mangler *Mang) {
// Already initialized.
if (!Stub.empty()) return;
Stub = Mang->getMangledName(GV, "$stub", true);
LazyPtr = Mang->getMangledName(GV, "$lazy_ptr", true);
AnonSymbol = Mang->getMangledName(GV, "$stub$tmp", true);
if (!StubName.empty()) return;
StubName = Mang->getMangledName(GV, "$stub", true);
LazyPtrName = Mang->getMangledName(GV, "$lazy_ptr", true);
AnonSymbolName = Mang->getMangledName(GV, "$stub$tmp", true);
}
void Init(StringRef GVName, Mangler *Mang) {
void Init(StringRef GVName, Mangler *Mang, MCContext &Ctx) {
assert(!GVName.empty());
if (!Stub.empty()) return; // Already initialized.
if (StubSym != 0) return; // Already initialized.
// Get the names for the external symbol name.
SmallString<128> TmpStr;
Mang->getNameWithPrefix(TmpStr, GVName + "$stub", Mangler::Private);
Stub = TmpStr.str();
StubSym = Ctx.GetOrCreateSymbol(TmpStr.str());
TmpStr.clear();
Mang->getNameWithPrefix(TmpStr, GVName + "$lazy_ptr", Mangler::Private);
LazyPtr = TmpStr.str();
LazyPtrSym = Ctx.GetOrCreateSymbol(TmpStr.str());
TmpStr.clear();
Mang->getNameWithPrefix(TmpStr, GVName + "$stub$tmp", Mangler::Private);
AnonSymbol = TmpStr.str();
AnonSymbolSym = Ctx.GetOrCreateSymbol(TmpStr.str());
}
void printStub(raw_ostream &OS, const MCAsmInfo *MAI) const {
if (StubSym)
StubSym->print(OS, MAI);
else
OS << StubName;
}
void printLazyPtr(raw_ostream &OS, const MCAsmInfo *MAI) const {
if (LazyPtrSym)
LazyPtrSym->print(OS, MAI);
else
OS << LazyPtrName;
}
void printAnonSymbol(raw_ostream &OS, const MCAsmInfo *MAI) const {
if (AnonSymbolSym)
AnonSymbolSym->print(OS, MAI);
else
OS << AnonSymbolName;
}
};
@ -232,7 +255,7 @@ namespace {
// Dynamically-resolved functions need a stub for the function.
FnStubInfo &FnInfo = FnStubs[Mang->getMangledName(GV)];
FnInfo.Init(GV, Mang);
O << FnInfo.Stub;
FnInfo.printStub(O, MAI);
return;
}
}
@ -240,8 +263,8 @@ namespace {
SmallString<128> MangledName;
Mang->getNameWithPrefix(MangledName, MO.getSymbolName());
FnStubInfo &FnInfo = FnStubs[MangledName.str()];
FnInfo.Init(MO.getSymbolName(), Mang);
O << FnInfo.Stub;
FnInfo.Init(MO.getSymbolName(), Mang, OutContext);
FnInfo.printStub(O, MAI);
return;
}
}
@ -1046,27 +1069,38 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
MCSectionMachO::S_SYMBOL_STUBS |
MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
32, SectionKind::getText());
for (StringMap<FnStubInfo>::iterator I = FnStubs.begin(), E = FnStubs.end();
for (StringMap<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";
Info.printStub(O, MAI);
O << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << '\n';
O << "\tmflr r0\n";
O << "\tbcl 20,31," << Info.AnonSymbol << '\n';
O << Info.AnonSymbol << ":\n";
O << "\tbcl 20,31,";
Info.printAnonSymbol(O, MAI);
O << '\n';
Info.printAnonSymbol(O, MAI);
O << ":\n";
O << "\tmflr r11\n";
O << "\taddis r11,r11,ha16(" << Info.LazyPtr << "-" << Info.AnonSymbol;
O << "\taddis r11,r11,ha16(";
Info.printLazyPtr(O, MAI);
O << '-';
Info.printAnonSymbol(O, MAI);
O << ")\n";
O << "\tmtlr r0\n";
O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(";
O << Info.LazyPtr << "-" << Info.AnonSymbol << ")(r11)\n";
Info.printLazyPtr(O, MAI);
O << '-';
Info.printAnonSymbol(O, MAI);
O << ")(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
OutStreamer.SwitchSection(LSPSection);
O << Info.LazyPtr << ":\n";
Info.printLazyPtr(O, MAI);
O << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << '\n';
O << (isPPC64 ? "\t.quad" : "\t.long") << " dyld_stub_binding_helper\n";
}
@ -1082,15 +1116,20 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
OutStreamer.SwitchSection(StubSection);
EmitAlignment(4);
const FnStubInfo &Info = I->second;
O << Info.Stub << ":\n";
Info.printStub(O, MAI);
O << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << '\n';
O << "\tlis r11,ha16(" << Info.LazyPtr << ")\n";
O << "\tlis r11,ha16(";
Info.printLazyPtr(O, MAI);
O << ")\n";
O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(";
O << Info.LazyPtr << ")(r11)\n";
Info.printLazyPtr(O, MAI);
O << ")(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
OutStreamer.SwitchSection(LSPSection);
O << Info.LazyPtr << ":\n";
Info.printLazyPtr(O, MAI);
O << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << '\n';
O << (isPPC64 ? "\t.quad" : "\t.long") << " dyld_stub_binding_helper\n";
}