mirror of
https://github.com/RPCS3/llvm-mirror.git
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Remove X86SharedAsmPrinter
llvm-svn: 52860
This commit is contained in:
Anton Korobeynikov
parent
dcc6a8314a
commit
adec555f96
@ -20,14 +20,16 @@
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#include "X86MachineFunctionInfo.h"
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#include "X86TargetMachine.h"
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#include "X86TargetAsmInfo.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/CallingConv.h"
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#include "llvm/CodeGen/MachineJumpTableInfo.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Module.h"
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#include "llvm/Type.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/CodeGen/MachineJumpTableInfo.h"
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#include "llvm/Support/Mangler.h"
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#include "llvm/Target/TargetAsmInfo.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/ADT/Statistic.h"
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using namespace llvm;
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STATISTIC(EmittedInsts, "Number of machine instrs printed");
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@ -46,6 +48,103 @@ static std::string getPICLabelString(unsigned FnNum,
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return label;
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}
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static X86MachineFunctionInfo calculateFunctionInfo(const Function *F,
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const TargetData *TD) {
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X86MachineFunctionInfo Info;
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uint64_t Size = 0;
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switch (F->getCallingConv()) {
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case CallingConv::X86_StdCall:
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Info.setDecorationStyle(StdCall);
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break;
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case CallingConv::X86_FastCall:
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Info.setDecorationStyle(FastCall);
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break;
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default:
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return Info;
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}
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unsigned argNum = 1;
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for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
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AI != AE; ++AI, ++argNum) {
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const Type* Ty = AI->getType();
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// 'Dereference' type in case of byval parameter attribute
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if (F->paramHasAttr(argNum, ParamAttr::ByVal))
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Ty = cast<PointerType>(Ty)->getElementType();
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// Size should be aligned to DWORD boundary
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Size += ((TD->getABITypeSize(Ty) + 3)/4)*4;
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}
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// We're not supporting tooooo huge arguments :)
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Info.setBytesToPopOnReturn((unsigned int)Size);
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return Info;
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}
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/// PrintUnmangledNameSafely - Print out the printable characters in the name.
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/// Don't print things like \n or \0.
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static void PrintUnmangledNameSafely(const Value *V, std::ostream &OS) {
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for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
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Name != E; ++Name)
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if (isprint(*Name))
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OS << *Name;
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}
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/// decorateName - Query FunctionInfoMap and use this information for various
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/// name decoration.
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void X86ATTAsmPrinter::decorateName(std::string &Name,
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const GlobalValue *GV) {
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const Function *F = dyn_cast<Function>(GV);
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if (!F) return;
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// We don't want to decorate non-stdcall or non-fastcall functions right now
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unsigned CC = F->getCallingConv();
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if (CC != CallingConv::X86_StdCall && CC != CallingConv::X86_FastCall)
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return;
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// Decorate names only when we're targeting Cygwin/Mingw32 targets
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if (!Subtarget->isTargetCygMing())
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return;
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FMFInfoMap::const_iterator info_item = FunctionInfoMap.find(F);
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const X86MachineFunctionInfo *Info;
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if (info_item == FunctionInfoMap.end()) {
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// Calculate apropriate function info and populate map
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FunctionInfoMap[F] = calculateFunctionInfo(F, TM.getTargetData());
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Info = &FunctionInfoMap[F];
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} else {
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Info = &info_item->second;
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}
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const FunctionType *FT = F->getFunctionType();
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switch (Info->getDecorationStyle()) {
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case None:
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break;
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case StdCall:
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// "Pure" variadic functions do not receive @0 suffix.
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if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
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(FT->getNumParams() == 1 && F->hasStructRetAttr()))
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Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
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break;
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case FastCall:
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// "Pure" variadic functions do not receive @0 suffix.
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if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
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(FT->getNumParams() == 1 && F->hasStructRetAttr()))
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Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
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if (Name[0] == '_') {
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Name[0] = '@';
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} else {
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Name = '@' + Name;
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}
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break;
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default:
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assert(0 && "Unsupported DecorationStyle");
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}
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}
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/// getSectionForFunction - Return the section that we should emit the
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/// specified function body into.
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std::string X86ATTAsmPrinter::getSectionForFunction(const Function &F) const {
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@ -94,7 +193,7 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
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if (CC == CallingConv::X86_StdCall || CC == CallingConv::X86_FastCall)
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FunctionInfoMap[F] = *MF.getInfo<X86MachineFunctionInfo>();
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X86SharedAsmPrinter::decorateName(CurrentFnName, F);
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decorateName(CurrentFnName, F);
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SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
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@ -298,7 +397,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
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bool isThreadLocal = GVar && GVar->isThreadLocal();
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std::string Name = Mang->getValueName(GV);
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X86SharedAsmPrinter::decorateName(Name, GV);
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decorateName(Name, GV);
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if (!isMemOp && !isCallOp)
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O << '$';
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@ -649,5 +748,329 @@ void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
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printInstruction(MI);
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}
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/// doInitialization
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bool X86ATTAsmPrinter::doInitialization(Module &M) {
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if (TAI->doesSupportDebugInformation()) {
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// Emit initial debug information.
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DW.BeginModule(&M);
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}
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bool Result = AsmPrinter::doInitialization(M);
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// Darwin wants symbols to be quoted if they have complex names.
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if (Subtarget->isTargetDarwin())
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Mang->setUseQuotes(true);
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return Result;
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}
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bool X86ATTAsmPrinter::doFinalization(Module &M) {
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// Note: this code is not shared by the Intel printer as it is too different
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// from how MASM does things. When making changes here don't forget to look
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// at X86IntelAsmPrinter::doFinalization().
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const TargetData *TD = TM.getTargetData();
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// Print out module-level global variables here.
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for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
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I != E; ++I) {
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if (!I->hasInitializer())
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continue; // External global require no code
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// Check to see if this is a special global used by LLVM, if so, emit it.
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if (EmitSpecialLLVMGlobal(I)) {
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if (Subtarget->isTargetDarwin() &&
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TM.getRelocationModel() == Reloc::Static) {
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if (I->getName() == "llvm.global_ctors")
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O << ".reference .constructors_used\n";
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else if (I->getName() == "llvm.global_dtors")
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O << ".reference .destructors_used\n";
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}
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continue;
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}
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std::string name = Mang->getValueName(I);
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Constant *C = I->getInitializer();
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const Type *Type = C->getType();
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unsigned Size = TD->getABITypeSize(Type);
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unsigned Align = TD->getPreferredAlignmentLog(I);
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if (I->hasHiddenVisibility()) {
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if (const char *Directive = TAI->getHiddenDirective())
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O << Directive << name << "\n";
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} else if (I->hasProtectedVisibility()) {
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if (const char *Directive = TAI->getProtectedDirective())
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O << Directive << name << "\n";
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}
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if (Subtarget->isTargetELF())
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O << "\t.type\t" << name << ",@object\n";
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if (C->isNullValue() && !I->hasSection()) {
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if (I->hasExternalLinkage()) {
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if (const char *Directive = TAI->getZeroFillDirective()) {
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O << "\t.globl " << name << "\n";
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O << Directive << "__DATA, __common, " << name << ", "
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<< Size << ", " << Align << "\n";
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continue;
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}
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}
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if (!I->isThreadLocal() &&
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(I->hasInternalLinkage() || I->hasWeakLinkage() ||
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I->hasLinkOnceLinkage() || I->hasCommonLinkage())) {
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if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
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if (!NoZerosInBSS && TAI->getBSSSection())
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SwitchToDataSection(TAI->getBSSSection(), I);
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else
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SwitchToDataSection(TAI->getDataSection(), I);
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if (TAI->getLCOMMDirective() != NULL) {
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if (I->hasInternalLinkage()) {
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O << TAI->getLCOMMDirective() << name << "," << Size;
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if (Subtarget->isTargetDarwin())
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O << "," << Align;
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} else if (Subtarget->isTargetDarwin() && !I->hasCommonLinkage()) {
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O << "\t.globl " << name << "\n"
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<< TAI->getWeakDefDirective() << name << "\n";
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SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
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EmitAlignment(Align, I);
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O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
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PrintUnmangledNameSafely(I, O);
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O << "\n";
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EmitGlobalConstant(C);
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continue;
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} else {
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O << TAI->getCOMMDirective() << name << "," << Size;
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// Leopard and above support aligned common symbols.
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if (Subtarget->getDarwinVers() >= 9)
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O << "," << Align;
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}
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} else {
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if (!Subtarget->isTargetCygMing()) {
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if (I->hasInternalLinkage())
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O << "\t.local\t" << name << "\n";
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}
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O << TAI->getCOMMDirective() << name << "," << Size;
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if (TAI->getCOMMDirectiveTakesAlignment())
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O << "," << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
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}
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O << "\t\t" << TAI->getCommentString() << " ";
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PrintUnmangledNameSafely(I, O);
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O << "\n";
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continue;
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}
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}
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switch (I->getLinkage()) {
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case GlobalValue::CommonLinkage:
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case GlobalValue::LinkOnceLinkage:
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case GlobalValue::WeakLinkage:
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if (Subtarget->isTargetDarwin()) {
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O << "\t.globl " << name << "\n"
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<< TAI->getWeakDefDirective() << name << "\n";
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if (!I->isConstant())
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SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
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else {
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const ArrayType *AT = dyn_cast<ArrayType>(Type);
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if (AT && AT->getElementType()==Type::Int8Ty)
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SwitchToDataSection("\t.section __TEXT,__const_coal,coalesced", I);
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else
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SwitchToDataSection("\t.section __DATA,__const_coal,coalesced", I);
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}
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} else if (Subtarget->isTargetCygMing()) {
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std::string SectionName(".section\t.data$linkonce." +
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name +
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",\"aw\"");
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SwitchToDataSection(SectionName.c_str(), I);
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O << "\t.globl\t" << name << "\n"
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<< "\t.linkonce same_size\n";
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} else {
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std::string SectionName("\t.section\t.llvm.linkonce.d." +
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name +
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",\"aw\",@progbits");
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SwitchToDataSection(SectionName.c_str(), I);
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O << "\t.weak\t" << name << "\n";
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}
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break;
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case GlobalValue::DLLExportLinkage:
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DLLExportedGVs.insert(Mang->makeNameProper(I->getName(),""));
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// FALL THROUGH
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case GlobalValue::AppendingLinkage:
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// FIXME: appending linkage variables should go into a section of
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// their name or something. For now, just emit them as external.
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case GlobalValue::ExternalLinkage:
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// If external or appending, declare as a global symbol
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O << "\t.globl " << name << "\n";
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// FALL THROUGH
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case GlobalValue::InternalLinkage: {
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if (I->isConstant()) {
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const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
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if (TAI->getCStringSection() && CVA && CVA->isCString()) {
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SwitchToDataSection(TAI->getCStringSection(), I);
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break;
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}
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}
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// FIXME: special handling for ".ctors" & ".dtors" sections
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if (I->hasSection() &&
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(I->getSection() == ".ctors" ||
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I->getSection() == ".dtors")) {
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std::string SectionName = ".section " + I->getSection();
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if (Subtarget->isTargetCygMing()) {
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SectionName += ",\"aw\"";
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} else {
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assert(!Subtarget->isTargetDarwin());
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SectionName += ",\"aw\",@progbits";
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}
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SwitchToDataSection(SectionName.c_str());
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} else if (I->hasSection() && Subtarget->isTargetDarwin()) {
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// Honor all section names on Darwin; ObjC uses this
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std::string SectionName = ".section " + I->getSection();
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SwitchToDataSection(SectionName.c_str());
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} else {
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if (C->isNullValue() && !NoZerosInBSS && TAI->getBSSSection())
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SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSBSSSection() :
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TAI->getBSSSection(), I);
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else if (!I->isConstant())
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SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSDataSection() :
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TAI->getDataSection(), I);
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else if (I->isThreadLocal())
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SwitchToDataSection(TAI->getTLSDataSection());
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else {
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// Read-only data.
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bool HasReloc = C->ContainsRelocations();
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if (HasReloc &&
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Subtarget->isTargetDarwin() &&
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TM.getRelocationModel() != Reloc::Static)
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SwitchToDataSection("\t.const_data\n");
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else if (!HasReloc && Size == 4 &&
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TAI->getFourByteConstantSection())
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SwitchToDataSection(TAI->getFourByteConstantSection(), I);
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else if (!HasReloc && Size == 8 &&
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TAI->getEightByteConstantSection())
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SwitchToDataSection(TAI->getEightByteConstantSection(), I);
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else if (!HasReloc && Size == 16 &&
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TAI->getSixteenByteConstantSection())
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SwitchToDataSection(TAI->getSixteenByteConstantSection(), I);
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else if (TAI->getReadOnlySection())
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SwitchToDataSection(TAI->getReadOnlySection(), I);
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else
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SwitchToDataSection(TAI->getDataSection(), I);
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}
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}
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break;
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}
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default:
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assert(0 && "Unknown linkage type!");
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}
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EmitAlignment(Align, I);
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O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
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PrintUnmangledNameSafely(I, O);
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O << "\n";
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if (TAI->hasDotTypeDotSizeDirective())
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O << "\t.size\t" << name << ", " << Size << "\n";
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// If the initializer is a extern weak symbol, remember to emit the weak
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// reference!
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if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
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if (GV->hasExternalWeakLinkage())
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ExtWeakSymbols.insert(GV);
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EmitGlobalConstant(C);
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}
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// Output linker support code for dllexported globals
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if (!DLLExportedGVs.empty()) {
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SwitchToDataSection(".section .drectve");
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}
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for (StringSet<>::iterator i = DLLExportedGVs.begin(),
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e = DLLExportedGVs.end();
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i != e; ++i) {
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O << "\t.ascii \" -export:" << i->getKeyData() << ",data\"\n";
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}
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if (!DLLExportedFns.empty()) {
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SwitchToDataSection(".section .drectve");
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}
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for (StringSet<>::iterator i = DLLExportedFns.begin(),
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e = DLLExportedFns.end();
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i != e; ++i) {
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O << "\t.ascii \" -export:" << i->getKeyData() << "\"\n";
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}
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if (Subtarget->isTargetDarwin()) {
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SwitchToDataSection("");
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// Output stubs for dynamically-linked functions
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unsigned j = 1;
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for (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
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i != e; ++i, ++j) {
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SwitchToDataSection("\t.section __IMPORT,__jump_table,symbol_stubs,"
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"self_modifying_code+pure_instructions,5", 0);
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std::string p = i->getKeyData();
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printSuffixedName(p, "$stub");
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O << ":\n";
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O << "\t.indirect_symbol " << p << "\n";
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O << "\thlt ; hlt ; hlt ; hlt ; hlt\n";
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}
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O << "\n";
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if (TAI->doesSupportExceptionHandling() && MMI && !Subtarget->is64Bit()) {
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// Add the (possibly multiple) personalities to the set of global values.
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// Only referenced functions get into the Personalities list.
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const std::vector<Function *>& Personalities = MMI->getPersonalities();
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for (std::vector<Function *>::const_iterator I = Personalities.begin(),
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E = Personalities.end(); I != E; ++I)
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if (*I) GVStubs.insert("_" + (*I)->getName());
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}
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// Output stubs for external and common global variables.
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if (!GVStubs.empty())
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SwitchToDataSection(
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"\t.section __IMPORT,__pointers,non_lazy_symbol_pointers");
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for (StringSet<>::iterator i = GVStubs.begin(), e = GVStubs.end();
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i != e; ++i) {
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std::string p = i->getKeyData();
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printSuffixedName(p, "$non_lazy_ptr");
|
||||
O << ":\n";
|
||||
O << "\t.indirect_symbol " << p << "\n";
|
||||
O << "\t.long\t0\n";
|
||||
}
|
||||
|
||||
// Emit final debug information.
|
||||
DW.EndModule();
|
||||
|
||||
// Funny Darwin hack: This flag tells the linker that no global symbols
|
||||
// contain code that falls through to other global symbols (e.g. the obvious
|
||||
// implementation of multiple entry points). If this doesn't occur, the
|
||||
// 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 (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
|
||||
i != e; ++i) {
|
||||
O << "\t.def\t " << i->getKeyData()
|
||||
<< ";\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();
|
||||
}
|
||||
|
||||
return AsmPrinter::doFinalization(M);
|
||||
}
|
||||
|
||||
// Include the auto-generated portion of the assembly writer.
|
||||
#include "X86GenAsmWriter.inc"
|
||||
|
||||
@ -14,21 +14,49 @@
|
||||
#ifndef X86ATTASMPRINTER_H
|
||||
#define X86ATTASMPRINTER_H
|
||||
|
||||
#include "X86AsmPrinter.h"
|
||||
#include "X86.h"
|
||||
#include "X86MachineFunctionInfo.h"
|
||||
#include "X86TargetMachine.h"
|
||||
#include "llvm/ADT/StringSet.h"
|
||||
#include "llvm/CodeGen/AsmPrinter.h"
|
||||
#include "llvm/CodeGen/DwarfWriter.h"
|
||||
#include "llvm/CodeGen/MachineModuleInfo.h"
|
||||
#include "llvm/CodeGen/ValueTypes.h"
|
||||
#include "llvm/Support/Compiler.h"
|
||||
|
||||
namespace llvm {
|
||||
|
||||
struct MachineJumpTableInfo;
|
||||
|
||||
struct VISIBILITY_HIDDEN X86ATTAsmPrinter : public X86SharedAsmPrinter {
|
||||
X86ATTAsmPrinter(std::ostream &O, X86TargetMachine &TM, const TargetAsmInfo *T)
|
||||
: X86SharedAsmPrinter(O, TM, T) { }
|
||||
|
||||
struct VISIBILITY_HIDDEN X86ATTAsmPrinter : public AsmPrinter {
|
||||
DwarfWriter DW;
|
||||
MachineModuleInfo *MMI;
|
||||
|
||||
const X86Subtarget *Subtarget;
|
||||
|
||||
X86ATTAsmPrinter(std::ostream &O, X86TargetMachine &TM,
|
||||
const TargetAsmInfo *T)
|
||||
: AsmPrinter(O, TM, T), DW(O, this, T), MMI(0) {
|
||||
Subtarget = &TM.getSubtarget<X86Subtarget>();
|
||||
}
|
||||
|
||||
virtual const char *getPassName() const {
|
||||
return "X86 AT&T-Style Assembly Printer";
|
||||
}
|
||||
|
||||
void getAnalysisUsage(AnalysisUsage &AU) const {
|
||||
AU.setPreservesAll();
|
||||
if (Subtarget->isTargetDarwin() ||
|
||||
Subtarget->isTargetELF() ||
|
||||
Subtarget->isTargetCygMing()) {
|
||||
AU.addRequired<MachineModuleInfo>();
|
||||
}
|
||||
AsmPrinter::getAnalysisUsage(AU);
|
||||
}
|
||||
|
||||
bool doInitialization(Module &M);
|
||||
bool doFinalization(Module &M);
|
||||
|
||||
/// printInstruction - This method is automatically generated by tablegen
|
||||
/// from the instruction set description. This method returns true if the
|
||||
/// machine instruction was sufficiently described to print it, otherwise it
|
||||
@ -68,13 +96,13 @@ struct VISIBILITY_HIDDEN X86ATTAsmPrinter : public X86SharedAsmPrinter {
|
||||
void printlea64_32mem(const MachineInstr *MI, unsigned OpNo) {
|
||||
printMemReference(MI, OpNo, "subreg64");
|
||||
}
|
||||
|
||||
|
||||
bool printAsmMRegister(const MachineOperand &MO, const char Mode);
|
||||
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
||||
unsigned AsmVariant, const char *ExtraCode);
|
||||
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
|
||||
unsigned AsmVariant, const char *ExtraCode);
|
||||
|
||||
|
||||
void printMachineInstruction(const MachineInstr *MI);
|
||||
void printSSECC(const MachineInstr *MI, unsigned Op);
|
||||
void printMemReference(const MachineInstr *MI, unsigned Op,
|
||||
@ -88,13 +116,35 @@ struct VISIBILITY_HIDDEN X86ATTAsmPrinter : public X86SharedAsmPrinter {
|
||||
void printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
|
||||
const MachineBasicBlock *MBB,
|
||||
unsigned uid) const;
|
||||
|
||||
|
||||
void printPICLabel(const MachineInstr *MI, unsigned Op);
|
||||
bool runOnMachineFunction(MachineFunction &F);
|
||||
|
||||
|
||||
/// getSectionForFunction - Return the section that we should emit the
|
||||
/// specified function body into.
|
||||
virtual std::string getSectionForFunction(const Function &F) const;
|
||||
|
||||
// Necessary for Darwin to print out the apprioriate types of linker stubs
|
||||
StringSet<> FnStubs, GVStubs, LinkOnceStubs;
|
||||
|
||||
// Necessary for dllexport support
|
||||
StringSet<> DLLExportedFns, DLLExportedGVs;
|
||||
|
||||
// We have to propagate some information about MachineFunction to
|
||||
// AsmPrinter. It's ok, when we're printing the function, since we have
|
||||
// access to MachineFunction and can get the appropriate MachineFunctionInfo.
|
||||
// Unfortunately, this is not possible when we're printing reference to
|
||||
// Function (e.g. calling it and so on). Even more, there is no way to get the
|
||||
// corresponding MachineFunctions: it can even be not created at all. That's
|
||||
// why we should use additional structure, when we're collecting all necessary
|
||||
// information.
|
||||
//
|
||||
// This structure is using e.g. for name decoration for stdcall & fastcall'ed
|
||||
// function, since we have to use arguments' size for decoration.
|
||||
typedef std::map<const Function*, X86MachineFunctionInfo> FMFInfoMap;
|
||||
FMFInfoMap FunctionInfoMap;
|
||||
|
||||
void decorateName(std::string& Name, const GlobalValue* GV);
|
||||
};
|
||||
|
||||
} // end namespace llvm
|
||||
|
||||
@ -14,446 +14,11 @@
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#include "X86AsmPrinter.h"
|
||||
#include "X86ATTAsmPrinter.h"
|
||||
#include "X86COFF.h"
|
||||
#include "X86IntelAsmPrinter.h"
|
||||
#include "X86MachineFunctionInfo.h"
|
||||
#include "X86Subtarget.h"
|
||||
#include "llvm/ADT/StringExtras.h"
|
||||
#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/TargetAsmInfo.h"
|
||||
#include "llvm/Target/TargetOptions.h"
|
||||
using namespace llvm;
|
||||
|
||||
static X86MachineFunctionInfo calculateFunctionInfo(const Function *F,
|
||||
const TargetData *TD) {
|
||||
X86MachineFunctionInfo Info;
|
||||
uint64_t Size = 0;
|
||||
|
||||
switch (F->getCallingConv()) {
|
||||
case CallingConv::X86_StdCall:
|
||||
Info.setDecorationStyle(StdCall);
|
||||
break;
|
||||
case CallingConv::X86_FastCall:
|
||||
Info.setDecorationStyle(FastCall);
|
||||
break;
|
||||
default:
|
||||
return Info;
|
||||
}
|
||||
|
||||
unsigned argNum = 1;
|
||||
for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
|
||||
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->getABITypeSize(Ty) + 3)/4)*4;
|
||||
}
|
||||
|
||||
// We're not supporting tooooo huge arguments :)
|
||||
Info.setBytesToPopOnReturn((unsigned int)Size);
|
||||
return Info;
|
||||
}
|
||||
|
||||
|
||||
/// decorateName - Query FunctionInfoMap and use this information for various
|
||||
/// name decoration.
|
||||
void X86SharedAsmPrinter::decorateName(std::string &Name,
|
||||
const GlobalValue *GV) {
|
||||
const Function *F = dyn_cast<Function>(GV);
|
||||
if (!F) return;
|
||||
|
||||
// We don't want to decorate non-stdcall or non-fastcall functions right now
|
||||
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 X86MachineFunctionInfo *Info;
|
||||
if (info_item == FunctionInfoMap.end()) {
|
||||
// Calculate apropriate function info and populate map
|
||||
FunctionInfoMap[F] = calculateFunctionInfo(F, TM.getTargetData());
|
||||
Info = &FunctionInfoMap[F];
|
||||
} else {
|
||||
Info = &info_item->second;
|
||||
}
|
||||
|
||||
const FunctionType *FT = F->getFunctionType();
|
||||
switch (Info->getDecorationStyle()) {
|
||||
case None:
|
||||
break;
|
||||
case StdCall:
|
||||
// "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:
|
||||
// "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] == '_') {
|
||||
Name[0] = '@';
|
||||
} else {
|
||||
Name = '@' + Name;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
assert(0 && "Unsupported DecorationStyle");
|
||||
}
|
||||
}
|
||||
|
||||
/// doInitialization
|
||||
bool X86SharedAsmPrinter::doInitialization(Module &M) {
|
||||
if (TAI->doesSupportDebugInformation()) {
|
||||
// Emit initial debug information.
|
||||
DW.BeginModule(&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) {
|
||||
// Note: this code is not shared by the Intel printer as it is too different
|
||||
// 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
|
||||
|
||||
// Check to see if this is a special global used by LLVM, if so, emit it.
|
||||
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();
|
||||
const Type *Type = C->getType();
|
||||
unsigned Size = TD->getABITypeSize(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 " << name << "\n";
|
||||
O << Directive << "__DATA, __common, " << name << ", "
|
||||
<< Size << ", " << Align << "\n";
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
if (!I->isThreadLocal() &&
|
||||
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
|
||||
I->hasLinkOnceLinkage() || I->hasCommonLinkage())) {
|
||||
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 << "," << Align;
|
||||
} 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())
|
||||
O << "\t.local\t" << name << "\n";
|
||||
}
|
||||
O << TAI->getCOMMDirective() << name << "," << Size;
|
||||
if (TAI->getCOMMDirectiveTakesAlignment())
|
||||
O << "," << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
|
||||
}
|
||||
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"
|
||||
<< 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\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 " << 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 {
|
||||
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(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;
|
||||
}
|
||||
default:
|
||||
assert(0 && "Unknown linkage type!");
|
||||
}
|
||||
|
||||
EmitAlignment(Align, I);
|
||||
O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
|
||||
PrintUnmangledNameSafely(I, O);
|
||||
O << "\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);
|
||||
}
|
||||
|
||||
// Output linker support code for dllexported globals
|
||||
if (!DLLExportedGVs.empty()) {
|
||||
SwitchToDataSection(".section .drectve");
|
||||
}
|
||||
|
||||
for (StringSet<>::iterator i = DLLExportedGVs.begin(),
|
||||
e = DLLExportedGVs.end();
|
||||
i != e; ++i) {
|
||||
O << "\t.ascii \" -export:" << i->getKeyData() << ",data\"\n";
|
||||
}
|
||||
|
||||
if (!DLLExportedFns.empty()) {
|
||||
SwitchToDataSection(".section .drectve");
|
||||
}
|
||||
|
||||
for (StringSet<>::iterator i = DLLExportedFns.begin(),
|
||||
e = DLLExportedFns.end();
|
||||
i != e; ++i) {
|
||||
O << "\t.ascii \" -export:" << i->getKeyData() << "\"\n";
|
||||
}
|
||||
|
||||
if (Subtarget->isTargetDarwin()) {
|
||||
SwitchToDataSection("");
|
||||
|
||||
// Output stubs for dynamically-linked functions
|
||||
unsigned j = 1;
|
||||
for (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
|
||||
i != e; ++i, ++j) {
|
||||
SwitchToDataSection("\t.section __IMPORT,__jump_table,symbol_stubs,"
|
||||
"self_modifying_code+pure_instructions,5", 0);
|
||||
std::string p = i->getKeyData();
|
||||
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.empty())
|
||||
SwitchToDataSection(
|
||||
"\t.section __IMPORT,__pointers,non_lazy_symbol_pointers");
|
||||
for (StringSet<>::iterator i = GVStubs.begin(), e = GVStubs.end();
|
||||
i != e; ++i) {
|
||||
std::string p = i->getKeyData();
|
||||
printSuffixedName(p, "$non_lazy_ptr");
|
||||
O << ":\n";
|
||||
O << "\t.indirect_symbol " << p << "\n";
|
||||
O << "\t.long\t0\n";
|
||||
}
|
||||
|
||||
// Emit final debug information.
|
||||
DW.EndModule();
|
||||
|
||||
// Funny Darwin hack: This flag tells the linker that no global symbols
|
||||
// contain code that falls through to other global symbols (e.g. the obvious
|
||||
// implementation of multiple entry points). If this doesn't occur, the
|
||||
// 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 (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
|
||||
i != e; ++i) {
|
||||
O << "\t.def\t " << i->getKeyData()
|
||||
<< ";\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();
|
||||
}
|
||||
|
||||
return AsmPrinter::doFinalization(M);
|
||||
}
|
||||
|
||||
/// createX86CodePrinterPass - Returns a pass that prints the X86 assembly code
|
||||
/// for a MachineFunction to the given output stream, using the given target
|
||||
/// machine description.
|
||||
|
||||
@ -1,80 +0,0 @@
|
||||
//===-- X86AsmPrinter.h - Convert X86 LLVM code to Intel assembly ---------===//
|
||||
//
|
||||
// The LLVM Compiler Infrastructure
|
||||
//
|
||||
// This file is distributed under the University of Illinois Open Source
|
||||
// License. See LICENSE.TXT for details.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
//
|
||||
// This file the shared super class printer that converts from our internal
|
||||
// representation of machine-dependent LLVM code to Intel and AT&T format
|
||||
// assembly language. This printer is the output mechanism used by `llc'.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#ifndef X86ASMPRINTER_H
|
||||
#define X86ASMPRINTER_H
|
||||
|
||||
#include "X86.h"
|
||||
#include "X86MachineFunctionInfo.h"
|
||||
#include "X86TargetMachine.h"
|
||||
#include "llvm/ADT/StringSet.h"
|
||||
#include "llvm/CodeGen/AsmPrinter.h"
|
||||
#include "llvm/CodeGen/DwarfWriter.h"
|
||||
#include "llvm/CodeGen/MachineModuleInfo.h"
|
||||
#include "llvm/Support/Compiler.h"
|
||||
|
||||
namespace llvm {
|
||||
|
||||
struct VISIBILITY_HIDDEN X86SharedAsmPrinter : public AsmPrinter {
|
||||
DwarfWriter DW;
|
||||
MachineModuleInfo *MMI;
|
||||
|
||||
X86SharedAsmPrinter(std::ostream &O, X86TargetMachine &TM,
|
||||
const TargetAsmInfo *T)
|
||||
: AsmPrinter(O, TM, T), DW(O, this, T), MMI(0) {
|
||||
Subtarget = &TM.getSubtarget<X86Subtarget>();
|
||||
}
|
||||
|
||||
// We have to propagate some information about MachineFunction to
|
||||
// AsmPrinter. It's ok, when we're printing the function, since we have
|
||||
// access to MachineFunction and can get the appropriate MachineFunctionInfo.
|
||||
// Unfortunately, this is not possible when we're printing reference to
|
||||
// Function (e.g. calling it and so on). Even more, there is no way to get the
|
||||
// corresponding MachineFunctions: it can even be not created at all. That's
|
||||
// why we should use additional structure, when we're collecting all necessary
|
||||
// information.
|
||||
//
|
||||
// This structure is using e.g. for name decoration for stdcall & fastcall'ed
|
||||
// function, since we have to use arguments' size for decoration.
|
||||
typedef std::map<const Function*, X86MachineFunctionInfo> FMFInfoMap;
|
||||
FMFInfoMap FunctionInfoMap;
|
||||
|
||||
void decorateName(std::string& Name, const GlobalValue* GV);
|
||||
|
||||
bool doInitialization(Module &M);
|
||||
bool doFinalization(Module &M);
|
||||
|
||||
void getAnalysisUsage(AnalysisUsage &AU) const {
|
||||
AU.setPreservesAll();
|
||||
if (Subtarget->isTargetDarwin() ||
|
||||
Subtarget->isTargetELF() ||
|
||||
Subtarget->isTargetCygMing()) {
|
||||
AU.addRequired<MachineModuleInfo>();
|
||||
}
|
||||
AsmPrinter::getAnalysisUsage(AU);
|
||||
}
|
||||
|
||||
const X86Subtarget *Subtarget;
|
||||
|
||||
// Necessary for Darwin to print out the apprioriate types of linker stubs
|
||||
StringSet<> FnStubs, GVStubs, LinkOnceStubs;
|
||||
|
||||
// Necessary for dllexport support
|
||||
StringSet<> DLLExportedFns, DLLExportedGVs;
|
||||
};
|
||||
|
||||
} // end namespace llvm
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user