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convert arm/darwin stubs to use the mangler to synthesize all the names instead of

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doing it with printSuffixedName.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75741 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-07-15 04:41:01 +00:00
parent bb06129140
commit b1ccad3b0d
1 changed files with 66 additions and 47 deletions
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109
lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
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@ -75,9 +75,34 @@ namespace {
/// visibility that require non-lazy-pointers for indirect access.
StringMap<std::string> HiddenGVNonLazyPtrs;
struct FnStubInfo {
std::string Stub, LazyPtr, SLP, SCV;
FnStubInfo() {}
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);
SLP = Mang->getMangledName(GV, "$slp", true);
SCV = Mang->getMangledName(GV, "$scv", true);
}
void Init(const std::string &GV, Mangler *Mang) {
// Already initialized.
if (!Stub.empty()) return;
Stub = Mang->makeNameProper(GV+"$stub", true);
LazyPtr = Mang->makeNameProper(GV+"$lazy_ptr", true);
SLP = Mang->makeNameProper(GV+"$slp", true);
SCV = Mang->makeNameProper(GV+"$scv", true);
}
};
/// FnStubs - Keeps the set of external function GlobalAddresses that the
/// asm printer should generate stubs for.
StringSet<> FnStubs;
StringMap<FnStubInfo> FnStubs;
/// True if asm printer is printing a series of CONSTPOOL_ENTRY.
bool InCPMode;
@ -166,27 +191,23 @@ namespace {
HiddenGVNonLazyPtrs[SymName] = Name;
else
GVNonLazyPtrs[SymName] = Name;
O << Name;
} else if (ACPV->isStub()) {
//if (GV)
//Name = Mang->getMangledName(GV, "$stub", true);
//else
//Name = Mang->makeNameProper(ACPV->getSymbol()+"$stub", true);
if (GV)
Name = Mang->getMangledName(GV);
else
Name = Mang->makeNameProper(ACPV->getSymbol());
FnStubs.insert(Name);
printSuffixedName(Name, "$stub");
if (GV) {
FnStubInfo &FnInfo = FnStubs[Mang->getMangledName(GV)];
FnInfo.Init(GV, Mang);
Name = FnInfo.Stub;
} else {
FnStubInfo &FnInfo = FnStubs[Mang->makeNameProper(ACPV->getSymbol())];
FnInfo.Init(ACPV->getSymbol(), Mang);
Name = FnInfo.Stub;
}
} else {
if (GV)
Name = Mang->getMangledName(GV);
else
Name = Mang->makeNameProper(ACPV->getSymbol());
O << Name;
}
O << Name;
@ -345,13 +366,17 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
case MachineOperand::MO_GlobalAddress: {
bool isCallOp = Modifier && !strcmp(Modifier, "call");
GlobalValue *GV = MO.getGlobal();
std::string Name = Mang->getMangledName(GV);
std::string Name;
bool isExt = GV->isDeclaration() || GV->isWeakForLinker();
if (isExt && isCallOp && Subtarget->isTargetDarwin() &&
TM.getRelocationModel() != Reloc::Static) {
printSuffixedName(Name, "$stub");
FnStubs.insert(Name);
} else
FnStubInfo &FnInfo = FnStubs[Mang->getMangledName(GV)];
FnInfo.Init(GV, Mang);
Name = FnInfo.Stub;
} else {
Name = Mang->getMangledName(GV);
}
O << Name;
printOffset(MO.getOffset());
@ -363,12 +388,15 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
}
case MachineOperand::MO_ExternalSymbol: {
bool isCallOp = Modifier && !strcmp(Modifier, "call");
std::string Name = Mang->makeNameProper(MO.getSymbolName());
std::string Name;
if (isCallOp && Subtarget->isTargetDarwin() &&
TM.getRelocationModel() != Reloc::Static) {
printSuffixedName(Name, "$stub");
FnStubs.insert(Name);
FnStubInfo &FnInfo = FnStubs[Mang->makeNameProper(MO.getSymbolName())];
FnInfo.Init(MO.getSymbolName(), Mang);
Name = FnInfo.Stub;
} else
Name = Mang->makeNameProper(MO.getSymbolName());
O << Name;
if (isCallOp && Subtarget->isTargetELF() &&
TM.getRelocationModel() == Reloc::PIC_)
@ -1186,8 +1214,9 @@ bool ARMAsmPrinter::doFinalization(Module &M) {
O << '\n';
// Output stubs for dynamically-linked functions
for (StringSet<>::iterator I = FnStubs.begin(), E = FnStubs.end();
for (StringMap<FnStubInfo>::iterator I = FnStubs.begin(), E = FnStubs.end();
I != E; ++I) {
const FnStubInfo &Info = I->second;
if (TM.getRelocationModel() == Reloc::PIC_)
SwitchToTextSection(".section __TEXT,__picsymbolstub4,symbol_stubs,"
"none,16", 0);
@ -1198,33 +1227,23 @@ bool ARMAsmPrinter::doFinalization(Module &M) {
EmitAlignment(2);
O << "\t.code\t32\n";
const char *p = I->getKeyData();
printSuffixedName(p, "$stub");
O << ":\n";
O << "\t.indirect_symbol " << p << "\n";
O << "\tldr ip, ";
printSuffixedName(p, "$slp");
O << "\n";
O << Info.Stub << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << '\n';
O << "\tldr ip, " << Info.SLP << '\n';
if (TM.getRelocationModel() == Reloc::PIC_) {
printSuffixedName(p, "$scv");
O << ":\n";
O << Info.SCV << ":\n";
O << "\tadd ip, pc, ip\n";
}
O << "\tldr pc, [ip, #0]\n";
printSuffixedName(p, "$slp");
O << ":\n";
O << "\t.long\t";
printSuffixedName(p, "$lazy_ptr");
if (TM.getRelocationModel() == Reloc::PIC_) {
O << "-(";
printSuffixedName(p, "$scv");
O << "+8)\n";
} else
O << "\n";
O << Info.SLP << ":\n";
O << "\t.long\t" << Info.LazyPtr;
if (TM.getRelocationModel() == Reloc::PIC_)
O << "-(" << Info.SCV << "+8)";
O << '\n';
SwitchToDataSection(".lazy_symbol_pointer", 0);
printSuffixedName(p, "$lazy_ptr");
O << ":\n";
O << "\t.indirect_symbol " << p << "\n";
O << Info.LazyPtr << ":\n";
O << "\t.indirect_symbol " << I->getKeyData() << "\n";
O << "\t.long\tdyld_stub_binding_helper\n";
}
O << '\n';