//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/CallingConv.h"
#include "llvm/Constants.h"
#include "llvm/Module.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/ParameterAttributes.h"
#include "llvm/Type.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Target/TargetOptions.h"
using namespace llvm;
-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()) {
return Info;
}
+ unsigned argNum = 1;
for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
- AI != AE; ++AI)
+ AI != AE; ++AI, ++argNum) {
+ const Type* Ty = AI->getType();
+
+ // 'Dereference' type in case of byval parameter attribute
+ if (F->paramHasAttr(argNum, ParamAttr::ByVal))
+ Ty = cast<PointerType>(Ty)->getElementType();
+
// Size should be aligned to DWORD boundary
- Size += ((TD->getTypeSize(AI->getType()) + 3)/4)*4;
-
+ Size += ((TD->getABITypeSize(Ty) + 3)/4)*4;
+ }
+
// We're not supporting tooooo huge arguments :)
Info.setBytesToPopOnReturn((unsigned int)Size);
return Info;
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 && F->hasStructRetAttr()))
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 && F->hasStructRetAttr()))
Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
if (Name[0] == '_') {
/// doInitialization
bool X86SharedAsmPrinter::doInitialization(Module &M) {
- if (Subtarget->isTargetELF() ||
- Subtarget->isTargetCygMing() ||
- Subtarget->isTargetDarwin()) {
+ 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;
+}
+
+/// PrintUnmangledNameSafely - Print out the printable characters in the name.
+/// Don't print things like \n or \0.
+static void PrintUnmangledNameSafely(const Value *V, std::ostream &OS) {
+ for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
+ Name != E; ++Name)
+ if (isprint(*Name))
+ OS << *Name;
}
bool X86SharedAsmPrinter::doFinalization(Module &M) {
std::string name = Mang->getValueName(I);
Constant *C = I->getInitializer();
const Type *Type = C->getType();
- unsigned Size = TD->getTypeSize(Type);
+ unsigned Size = TD->getABITypeSize(Type);
unsigned Align = TD->getPreferredAlignmentLog(I);
- if (I->hasHiddenVisibility())
+ 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 " << name << ",@object\n";
+ O << "\t.type\t" << name << ",@object\n";
- if (C->isNullValue()) {
+ if (C->isNullValue() && !I->hasSection()) {
if (I->hasExternalLinkage()) {
if (const char *Directive = TAI->getZeroFillDirective()) {
- O << "\t.globl\t" << name << "\n";
- O << Directive << "__DATA__, __common, " << name << ", "
+ O << "\t.globl " << name << "\n";
+ O << Directive << "__DATA, __common, " << name << ", "
<< Size << ", " << Align << "\n";
continue;
}
}
- if (!I->hasSection() &&
+ if (!I->isThreadLocal() &&
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasLinkOnceLinkage())) {
+ I->hasLinkOnceLinkage() || I->hasCommonLinkage())) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
if (!NoZerosInBSS && TAI->getBSSSection())
SwitchToDataSection(TAI->getBSSSection(), I);
O << TAI->getLCOMMDirective() << name << "," << Size;
if (Subtarget->isTargetDarwin())
O << "," << Align;
- } else
+ } else if (Subtarget->isTargetDarwin() && !I->hasCommonLinkage()) {
+ O << "\t.globl " << name << "\n"
+ << TAI->getWeakDefDirective() << name << "\n";
+ SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
+ EmitAlignment(Align, I);
+ O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
+ PrintUnmangledNameSafely(I, O);
+ O << "\n";
+ EmitGlobalConstant(C);
+ continue;
+ } else {
O << TAI->getCOMMDirective() << name << "," << Size;
+
+ // Leopard and above support aligned common symbols.
+ if (Subtarget->getDarwinVers() >= 9)
+ O << "," << Align;
+ }
} else {
if (!Subtarget->isTargetCygMing()) {
if (I->hasInternalLinkage())
if (TAI->getCOMMDirectiveTakesAlignment())
O << "," << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
}
- O << "\t\t" << TAI->getCommentString() << " " << I->getName() << "\n";
+ O << "\t\t" << TAI->getCommentString() << " ";
+ PrintUnmangledNameSafely(I, O);
+ O << "\n";
continue;
}
}
switch (I->getLinkage()) {
+ case GlobalValue::CommonLinkage:
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);
+ << TAI->getWeakDefDirective() << name << "\n";
+ if (!I->isConstant())
+ SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
+ else {
+ const ArrayType *AT = dyn_cast<ArrayType>(Type);
+ if (AT && AT->getElementType()==Type::Int8Ty)
+ SwitchToDataSection("\t.section __TEXT,__const_coal,coalesced", I);
+ else
+ SwitchToDataSection("\t.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 " << name << "\n"
+ 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 " << name << "\n";
+ O << "\t.weak\t" << name << "\n";
}
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::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 " << name << "\n";
assert(!Subtarget->isTargetDarwin());
SectionName += ",\"aw\",@progbits";
}
-
+ SwitchToDataSection(SectionName.c_str());
+ } else if (I->hasSection() && Subtarget->isTargetDarwin()) {
+ // Honor all section names on Darwin; ObjC uses this
+ std::string SectionName = ".section " + I->getSection();
SwitchToDataSection(SectionName.c_str());
} else {
if (C->isNullValue() && !NoZerosInBSS && TAI->getBSSSection())
- SwitchToDataSection(TAI->getBSSSection(), I);
+ SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSBSSSection() :
+ TAI->getBSSSection(), I);
else if (!I->isConstant())
- SwitchToDataSection(TAI->getDataSection(), I);
+ SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSDataSection() :
+ TAI->getDataSection(), I);
+ else if (I->isThreadLocal())
+ SwitchToDataSection(TAI->getTLSDataSection());
else {
// Read-only data.
bool HasReloc = C->ContainsRelocations();
}
EmitAlignment(Align, I);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " " << I->getName()
- << "\n";
+ O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
+ PrintUnmangledNameSafely(I, O);
+ O << "\n";
if (TAI->hasDotTypeDotSizeDirective())
- O << "\t.size " << name << ", " << Size << "\n";
+ 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))
ExtWeakSymbols.insert(GV);
EmitGlobalConstant(C);
- O << '\n';
}
// Output linker support code for dllexported globals
- if (DLLExportedGVs.begin() != DLLExportedGVs.end()) {
+ if (!DLLExportedGVs.empty()) {
SwitchToDataSection(".section .drectve");
}
O << "\t.ascii \" -export:" << *i << ",data\"\n";
}
- if (DLLExportedFns.begin() != DLLExportedFns.end()) {
+ if (!DLLExportedFns.empty()) {
SwitchToDataSection(".section .drectve");
}
unsigned j = 1;
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
i != e; ++i, ++j) {
- SwitchToDataSection(".section __IMPORT,__jump_table,symbol_stubs,"
+ SwitchToDataSection("\t.section __IMPORT,__jump_table,symbol_stubs,"
"self_modifying_code+pure_instructions,5", 0);
- O << "L" << *i << "$stub:\n";
- O << "\t.indirect_symbol " << *i << "\n";
+ std::string p = *i;
+ printSuffixedName(p, "$stub");
+ O << ":\n";
+ O << "\t.indirect_symbol " << p << "\n";
O << "\thlt ; hlt ; hlt ; hlt ; hlt\n";
}
O << "\n";
+ if (TAI->doesSupportExceptionHandling() && MMI && !Subtarget->is64Bit()) {
+ // Add the (possibly multiple) personalities to the set of global values.
+ // Only referenced functions get into the Personalities list.
+ const std::vector<Function *>& Personalities = MMI->getPersonalities();
+
+ for (std::vector<Function *>::const_iterator I = Personalities.begin(),
+ E = Personalities.end(); I != E; ++I)
+ if (*I) GVStubs.insert("_" + (*I)->getName());
+ }
+
// Output stubs for external and common global variables.
- if (GVStubs.begin() != GVStubs.end())
+ if (!GVStubs.empty())
SwitchToDataSection(
- ".section __IMPORT,__pointers,non_lazy_symbol_pointers");
+ "\t.section __IMPORT,__pointers,non_lazy_symbol_pointers");
for (std::set<std::string>::iterator i = GVStubs.begin(), e = GVStubs.end();
i != e; ++i) {
- O << "L" << *i << "$non_lazy_ptr:\n";
- O << "\t.indirect_symbol " << *i << "\n";
+ std::string p = *i;
+ printSuffixedName(p, "$non_lazy_ptr");
+ O << ":\n";
+ O << "\t.indirect_symbol " << p << "\n";
O << "\t.long\t0\n";
}
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