#include "X86AsmPrinter.h"
#include "X86ATTAsmPrinter.h"
+#include "X86COFF.h"
#include "X86IntelAsmPrinter.h"
#include "X86MachineFunctionInfo.h"
#include "X86Subtarget.h"
#include "llvm/CallingConv.h"
#include "llvm/Constants.h"
#include "llvm/Module.h"
+#include "llvm/DerivedTypes.h"
#include "llvm/Type.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Target/TargetAsmInfo.h"
-
+#include "llvm/Target/TargetOptions.h"
using namespace llvm;
-Statistic<> llvm::EmittedInsts("asm-printer",
- "Number of machine instrs printed");
-
-static X86FunctionInfo calculateFunctionInfo(const Function *F,
- const TargetData *TD) {
- X86FunctionInfo Info;
+static X86MachineFunctionInfo calculateFunctionInfo(const Function *F,
+ const TargetData *TD) {
+ X86MachineFunctionInfo Info;
uint64_t Size = 0;
switch (F->getCallingConv()) {
for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
AI != AE; ++AI)
- Size += TD->getTypeSize(AI->getType());
-
+ // Size should be aligned to DWORD boundary
+ Size += ((TD->getTypeSize(AI->getType()) + 3)/4)*4;
+
// We're not supporting tooooo huge arguments :)
Info.setBytesToPopOnReturn((unsigned int)Size);
return Info;
unsigned CC = F->getCallingConv();
if (CC != CallingConv::X86_StdCall && CC != CallingConv::X86_FastCall)
return;
+
+ // Decorate names only when we're targeting Cygwin/Mingw32 targets
+ if (!Subtarget->isTargetCygMing())
+ return;
FMFInfoMap::const_iterator info_item = FunctionInfoMap.find(F);
- const X86FunctionInfo *Info;
+ const X86MachineFunctionInfo *Info;
if (info_item == FunctionInfoMap.end()) {
// Calculate apropriate function info and populate map
FunctionInfoMap[F] = calculateFunctionInfo(F, TM.getTargetData());
} else {
Info = &info_item->second;
}
-
+
+ const FunctionType *FT = F->getFunctionType();
switch (Info->getDecorationStyle()) {
case None:
break;
case StdCall:
- if (!F->isVarArg()) // Variadic functions do not receive @0 suffix.
+ // "Pure" variadic functions do not receive @0 suffix.
+ if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
+ (FT->getNumParams() == 1 && FT->isStructReturn()))
Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
break;
case FastCall:
- if (!F->isVarArg()) // Variadic functions do not receive @0 suffix.
+ // "Pure" variadic functions do not receive @0 suffix.
+ if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
+ (FT->getNumParams() == 1 && FT->isStructReturn()))
Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
if (Name[0] == '_') {
/// doInitialization
bool X86SharedAsmPrinter::doInitialization(Module &M) {
- if (Subtarget->isTargetDarwin()) {
- const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
- if (!Subtarget->is64Bit())
- X86PICStyle = PICStyle::Stub;
-
+ if (TAI->doesSupportDebugInformation()) {
// Emit initial debug information.
DW.BeginModule(&M);
}
- return AsmPrinter::doInitialization(M);
+ bool Result = AsmPrinter::doInitialization(M);
+
+ // Darwin wants symbols to be quoted if they have complex names.
+ if (Subtarget->isTargetDarwin())
+ Mang->setUseQuotes(true);
+
+ return Result;
}
bool X86SharedAsmPrinter::doFinalization(Module &M) {
// from how MASM does things. When making changes here don't forget to look
// at X86IntelAsmPrinter::doFinalization().
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
+ 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))
+ if (EmitSpecialLLVMGlobal(I)) {
+ if (Subtarget->isTargetDarwin() &&
+ TM.getRelocationModel() == Reloc::Static) {
+ if (I->getName() == "llvm.global_ctors")
+ O << ".reference .constructors_used\n";
+ else if (I->getName() == "llvm.global_dtors")
+ O << ".reference .destructors_used\n";
+ }
continue;
+ }
std::string name = Mang->getValueName(I);
Constant *C = I->getInitializer();
- unsigned Size = TD->getTypeSize(C->getType());
- unsigned Align = getPreferredAlignmentLog(I);
-
- if (C->isNullValue() && /* FIXME: Verify correct */
- (I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasLinkOnceLinkage() ||
- (Subtarget->isTargetDarwin() &&
- I->hasExternalLinkage() && !I->hasSection()))) {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
+ const Type *Type = C->getType();
+ unsigned Size = TD->getTypeSize(Type);
+ unsigned Align = TD->getPreferredAlignmentLog(I);
+
+ if (I->hasHiddenVisibility()) {
+ if (const char *Directive = TAI->getHiddenDirective())
+ O << Directive << name << "\n";
+ } else if (I->hasProtectedVisibility()) {
+ if (const char *Directive = TAI->getProtectedDirective())
+ O << Directive << name << "\n";
+ }
+
+ if (Subtarget->isTargetELF())
+ O << "\t.type\t" << name << ",@object\n";
+
+ if (C->isNullValue() && !I->hasSection()) {
if (I->hasExternalLinkage()) {
+ if (const char *Directive = TAI->getZeroFillDirective()) {
O << "\t.globl\t" << name << "\n";
- O << "\t.zerofill __DATA__, __common, " << name << ", "
- << Size << ", " << Align;
- } else {
- SwitchToDataSection(TAI->getDataSection(), I);
+ O << Directive << "__DATA__, __common, " << name << ", "
+ << Size << ", " << Align << "\n";
+ continue;
+ }
+ }
+
+ if (!I->isThreadLocal() &&
+ (I->hasInternalLinkage() || I->hasWeakLinkage() ||
+ I->hasLinkOnceLinkage())) {
+ if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
+ if (!NoZerosInBSS && TAI->getBSSSection())
+ SwitchToDataSection(TAI->getBSSSection(), I);
+ else
+ SwitchToDataSection(TAI->getDataSection(), I);
if (TAI->getLCOMMDirective() != NULL) {
if (I->hasInternalLinkage()) {
O << TAI->getLCOMMDirective() << name << "," << Size;
if (Subtarget->isTargetDarwin())
- O << "," << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
+ O << "," << Align;
} else
O << TAI->getCOMMDirective() << name << "," << Size;
} else {
- if (!Subtarget->isTargetCygwin()) {
+ if (!Subtarget->isTargetCygMing()) {
if (I->hasInternalLinkage())
O << "\t.local\t" << name << "\n";
}
if (TAI->getCOMMDirectiveTakesAlignment())
O << "," << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
}
+ O << "\t\t" << TAI->getCommentString() << " " << I->getName() << "\n";
+ continue;
}
- O << "\t\t" << TAI->getCommentString() << " " << I->getName() << "\n";
- } else {
- switch (I->getLinkage()) {
- case GlobalValue::LinkOnceLinkage:
- case GlobalValue::WeakLinkage:
- if (Subtarget->isTargetDarwin()) {
- O << "\t.globl " << name << "\n"
- << "\t.weak_definition " << name << "\n";
- SwitchToDataSection(".section __DATA,__const_coal,coalesced", I);
- } else if (Subtarget->isTargetCygwin()) {
- O << "\t.section\t.llvm.linkonce.d." << name << ",\"aw\"\n"
- << "\t.weak " << name << "\n";
+ }
+
+ switch (I->getLinkage()) {
+ case GlobalValue::LinkOnceLinkage:
+ case GlobalValue::WeakLinkage:
+ if (Subtarget->isTargetDarwin()) {
+ O << "\t.globl\t" << name << "\n"
+ << "\t.weak_definition " << name << "\n";
+ SwitchToDataSection(".section __DATA,__const_coal,coalesced", I);
+ } else if (Subtarget->isTargetCygMing()) {
+ std::string SectionName(".section\t.data$linkonce." +
+ name +
+ ",\"aw\"");
+ SwitchToDataSection(SectionName.c_str(), I);
+ O << "\t.globl\t" << name << "\n"
+ << "\t.linkonce same_size\n";
+ } else {
+ std::string SectionName("\t.section\t.llvm.linkonce.d." +
+ name +
+ ",\"aw\",@progbits");
+ SwitchToDataSection(SectionName.c_str(), I);
+ O << "\t.weak\t" << name << "\n";
+ }
+ break;
+ case GlobalValue::DLLExportLinkage:
+ DLLExportedGVs.insert(Mang->makeNameProper(I->getName(),""));
+ // FALL THROUGH
+ 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.globl\t" << name << "\n";
+ // FALL THROUGH
+ case GlobalValue::InternalLinkage: {
+ if (I->isConstant()) {
+ const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
+ if (TAI->getCStringSection() && CVA && CVA->isCString()) {
+ SwitchToDataSection(TAI->getCStringSection(), I);
+ break;
+ }
+ }
+ // FIXME: special handling for ".ctors" & ".dtors" sections
+ if (I->hasSection() &&
+ (I->getSection() == ".ctors" ||
+ I->getSection() == ".dtors")) {
+ std::string SectionName = ".section " + I->getSection();
+
+ if (Subtarget->isTargetCygMing()) {
+ SectionName += ",\"aw\"";
} else {
- O << "\t.section\t.llvm.linkonce.d." << name << ",\"aw\",@progbits\n"
- << "\t.weak " << name << "\n";
+ assert(!Subtarget->isTargetDarwin());
+ SectionName += ",\"aw\",@progbits";
+ }
+
+ SwitchToDataSection(SectionName.c_str());
+ } else {
+ if (C->isNullValue() && !NoZerosInBSS && TAI->getBSSSection())
+ SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSBSSSection() :
+ TAI->getBSSSection(), I);
+ else if (!I->isConstant())
+ SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSDataSection() :
+ TAI->getDataSection(), I);
+ else if (I->isThreadLocal())
+ SwitchToDataSection(TAI->getTLSDataSection());
+ else {
+ // Read-only data.
+ bool HasReloc = C->ContainsRelocations();
+ if (HasReloc &&
+ Subtarget->isTargetDarwin() &&
+ TM.getRelocationModel() != Reloc::Static)
+ SwitchToDataSection("\t.const_data\n");
+ else if (!HasReloc && Size == 4 &&
+ TAI->getFourByteConstantSection())
+ SwitchToDataSection(TAI->getFourByteConstantSection(), I);
+ else if (!HasReloc && Size == 8 &&
+ TAI->getEightByteConstantSection())
+ SwitchToDataSection(TAI->getEightByteConstantSection(), I);
+ else if (!HasReloc && Size == 16 &&
+ TAI->getSixteenByteConstantSection())
+ SwitchToDataSection(TAI->getSixteenByteConstantSection(), I);
+ else if (TAI->getReadOnlySection())
+ SwitchToDataSection(TAI->getReadOnlySection(), I);
+ else
+ SwitchToDataSection(TAI->getDataSection(), 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::DLLExportLinkage:
- DLLExportedGVs.insert(Mang->makeNameProper(I->getName(),""));
- // FALL THROUGH
- case GlobalValue::ExternalLinkage:
- // If external or appending, declare as a global symbol
- O << "\t.globl " << name << "\n";
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- SwitchToDataSection(TAI->getDataSection(), I);
- break;
- default:
- assert(0 && "Unknown linkage type!");
}
+
+ break;
+ }
+ default:
+ assert(0 && "Unknown linkage type!");
+ }
- EmitAlignment(Align, I);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " " << I->getName()
- << "\n";
- if (TAI->hasDotTypeDotSizeDirective())
- O << "\t.size " << name << ", " << Size << "\n";
+ EmitAlignment(Align, I);
+ O << name << ":\t\t\t\t" << TAI->getCommentString() << " " << I->getName()
+ << "\n";
+ if (TAI->hasDotTypeDotSizeDirective())
+ O << "\t.size\t" << name << ", " << Size << "\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';
- }
+ EmitGlobalConstant(C);
}
// Output linker support code for dllexported globals
- if (DLLExportedGVs.begin() != DLLExportedGVs.end()) {
- SwitchToDataSection(".section .drectve", 0);
+ if (!DLLExportedGVs.empty()) {
+ SwitchToDataSection(".section .drectve");
}
for (std::set<std::string>::iterator i = DLLExportedGVs.begin(),
O << "\t.ascii \" -export:" << *i << ",data\"\n";
}
- if (DLLExportedFns.begin() != DLLExportedFns.end()) {
- SwitchToDataSection(".section .drectve", 0);
+ if (!DLLExportedFns.empty()) {
+ SwitchToDataSection(".section .drectve");
}
for (std::set<std::string>::iterator i = DLLExportedFns.begin(),
i != e; ++i) {
O << "\t.ascii \" -export:" << *i << "\"\n";
}
-
+
if (Subtarget->isTargetDarwin()) {
- SwitchToDataSection("", 0);
+ SwitchToDataSection("");
// Output stubs for dynamically-linked functions
unsigned j = 1;
O << "\n";
+ if (ExceptionHandling && TAI->doesSupportExceptionHandling() && MMI) {
+ // Add the (possibly multiple) personalities to the set of global values.
+ const std::vector<Function *>& Personalities = MMI->getPersonalities();
+
+ for (std::vector<Function *>::const_iterator I = Personalities.begin(),
+ E = Personalities.end(); I != E; ++I)
+ if (*I) GVStubs.insert("_" + (*I)->getName());
+ }
+
// Output stubs for external and common global variables.
- if (GVStubs.begin() != GVStubs.end())
+ if (!GVStubs.empty())
SwitchToDataSection(
- ".section __IMPORT,__pointers,non_lazy_symbol_pointers", 0);
+ ".section __IMPORT,__pointers,non_lazy_symbol_pointers");
for (std::set<std::string>::iterator i = GVStubs.begin(), e = GVStubs.end();
i != e; ++i) {
O << "L" << *i << "$non_lazy_ptr:\n";
O << "\t.long\t0\n";
}
- // Emit initial debug information.
+ // Emit final debug information.
DW.EndModule();
// Funny Darwin hack: This flag tells the linker that no global symbols
// linker can safely perform dead code stripping. Since LLVM never
// generates code that does this, it is always safe to set.
O << "\t.subsections_via_symbols\n";
+ } else if (Subtarget->isTargetCygMing()) {
+ // Emit type information for external functions
+ for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ i != e; ++i) {
+ O << "\t.def\t " << *i
+ << ";\t.scl\t" << COFF::C_EXT
+ << ";\t.type\t" << (COFF::DT_FCN << COFF::N_BTSHFT)
+ << ";\t.endef\n";
+ }
+
+ // Emit final debug information.
+ DW.EndModule();
+ } else if (Subtarget->isTargetELF()) {
+ // Emit final debug information.
+ DW.EndModule();
}
- AsmPrinter::doFinalization(M);
- return false; // success
+ return AsmPrinter::doFinalization(M);
}
/// createX86CodePrinterPass - Returns a pass that prints the X86 assembly code
projects / oota-llvm.git / blobdiff