X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FDwarfWriter.cpp;h=d1f195d55672aea08c5dd8b0aa5c6ee699a628d2;hb=ee888132754c709de8d2e2c5ef85531a15ed44f2;hp=e6ed8f0bffa544f8539db64daf6bcfa3bd06bd0a;hpb=9fda5be36bf5554c93f0dba8cfaed0b27369ae71;p=oota-llvm.git diff --git a/lib/CodeGen/DwarfWriter.cpp b/lib/CodeGen/DwarfWriter.cpp index e6ed8f0bffa..d1f195d5567 100644 --- a/lib/CodeGen/DwarfWriter.cpp +++ b/lib/CodeGen/DwarfWriter.cpp @@ -968,7 +968,7 @@ public: /// EmitFrameMoves - Emit frame instructions to describe the layout of the /// frame. void EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID, - const std::vector &Moves) { + const std::vector &Moves, bool isEH) { int stackGrowth = Asm->TM.getFrameInfo()->getStackGrowthDirection() == TargetFrameInfo::StackGrowsUp ? @@ -1010,7 +1010,7 @@ public: } else { Asm->EmitInt8(DW_CFA_def_cfa); Asm->EOL("DW_CFA_def_cfa"); - Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Src.getRegister())); + Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Src.getRegister(), isEH)); Asm->EOL("Register"); } @@ -1026,13 +1026,13 @@ public: if (Dst.isRegister()) { Asm->EmitInt8(DW_CFA_def_cfa_register); Asm->EOL("DW_CFA_def_cfa_register"); - Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Dst.getRegister())); + Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Dst.getRegister(), isEH)); Asm->EOL("Register"); } else { assert(0 && "Machine move no supported yet."); } } else { - unsigned Reg = RI->getDwarfRegNum(Src.getRegister()); + unsigned Reg = RI->getDwarfRegNum(Src.getRegister(), isEH); int Offset = Dst.getOffset() / stackGrowth; if (Offset < 0) { @@ -1340,7 +1340,7 @@ private: /// provided. void AddAddress(DIE *Die, unsigned Attribute, const MachineLocation &Location) { - unsigned Reg = RI->getDwarfRegNum(Location.getRegister()); + unsigned Reg = RI->getDwarfRegNum(Location.getRegister(), false); DIEBlock *Block = new DIEBlock(); if (Location.isRegister()) { @@ -1971,19 +1971,6 @@ private: if (didInitial) return; didInitial = true; - // Print out .file directives to specify files for .loc directives. - if (TAI->hasDotLocAndDotFile()) { - const UniqueVector &SourceFiles = MMI->getSourceFiles(); - const UniqueVector &Directories = MMI->getDirectories(); - for (unsigned i = 1, e = SourceFiles.size(); i <= e; ++i) { - sys::Path FullPath(Directories[SourceFiles[i].getDirectoryID()]); - bool AppendOk = FullPath.appendComponent(SourceFiles[i].getName()); - assert(AppendOk && "Could not append filename to directory!"); - Asm->EmitFile(i, FullPath.toString()); - Asm->EOL(); - } - } - // Dwarf sections base addresses. if (TAI->doesDwarfRequireFrameSection()) { Asm->SwitchToDataSection(TAI->getDwarfFrameSection()); @@ -2383,13 +2370,13 @@ private: Asm->EOL("CIE Code Alignment Factor"); Asm->EmitSLEB128Bytes(stackGrowth); Asm->EOL("CIE Data Alignment Factor"); - Asm->EmitInt8(RI->getDwarfRegNum(RI->getRARegister())); + Asm->EmitInt8(RI->getDwarfRegNum(RI->getRARegister(), false)); Asm->EOL("CIE RA Column"); std::vector Moves; RI->getInitialFrameState(Moves); - EmitFrameMoves(NULL, 0, Moves); + EmitFrameMoves(NULL, 0, Moves, false); Asm->EmitAlignment(2); EmitLabel("debug_frame_common_end", 0); @@ -2422,7 +2409,7 @@ private: "func_begin", DebugFrameInfo.Number); Asm->EOL("FDE address range"); - EmitFrameMoves("func_begin", DebugFrameInfo.Number, DebugFrameInfo.Moves); + EmitFrameMoves("func_begin", DebugFrameInfo.Number, DebugFrameInfo.Moves, false); Asm->EmitAlignment(2); EmitLabel("debug_frame_end", DebugFrameInfo.Number); @@ -2626,9 +2613,6 @@ public: MMI = mmi; shouldEmit = true; - // Emit initial sections - EmitInitial(); - // Create all the compile unit DIEs. ConstructCompileUnitDIEs(); @@ -2640,6 +2624,23 @@ public: // Prime section data. SectionMap.insert(TAI->getTextSection()); + + // Print out .file directives to specify files for .loc directives. These + // are printed out early so that they precede any .loc directives. + if (TAI->hasDotLocAndDotFile()) { + const UniqueVector &SourceFiles = MMI->getSourceFiles(); + const UniqueVector &Directories = MMI->getDirectories(); + for (unsigned i = 1, e = SourceFiles.size(); i <= e; ++i) { + sys::Path FullPath(Directories[SourceFiles[i].getDirectoryID()]); + bool AppendOk = FullPath.appendComponent(SourceFiles[i].getName()); + assert(AppendOk && "Could not append filename to directory!"); + Asm->EmitFile(i, FullPath.toString()); + Asm->EOL(); + } + } + + // Emit initial sections + EmitInitial(); } } @@ -2763,12 +2764,15 @@ private: bool hasCalls; bool hasLandingPads; std::vector Moves; + Function::LinkageTypes linkage; FunctionEHFrameInfo(const std::string &FN, unsigned Num, unsigned P, bool hC, bool hL, - const std::vector &M): + const std::vector &M, + Function::LinkageTypes l): FnName(FN), Number(Num), PersonalityIndex(P), - hasCalls(hC), hasLandingPads(hL), Moves(M) { } + hasCalls(hC), hasLandingPads(hL), Moves(M), + linkage(l) { } }; std::vector EHFrames; @@ -2816,7 +2820,7 @@ private: Asm->EOL("CIE Code Alignment Factor"); Asm->EmitSLEB128Bytes(stackGrowth); Asm->EOL("CIE Data Alignment Factor"); - Asm->EmitInt8(RI->getDwarfRegNum(RI->getRARegister())); + Asm->EmitInt8(RI->getDwarfRegNum(RI->getRARegister(), true)); Asm->EOL("CIE RA Column"); // If there is a personality, we need to indicate the functions location. @@ -2852,7 +2856,7 @@ private: // Indicate locations of general callee saved registers in frame. std::vector Moves; RI->getInitialFrameState(Moves); - EmitFrameMoves(NULL, 0, Moves); + EmitFrameMoves(NULL, 0, Moves, true); Asm->EmitAlignment(2); EmitLabel("eh_frame_common_end", Index); @@ -2866,15 +2870,25 @@ private: Asm->SwitchToTextSection(TAI->getDwarfEHFrameSection()); // Externally visible entry into the functions eh frame info. - if (const char *GlobalDirective = TAI->getGlobalDirective()) - O << GlobalDirective << EHFrameInfo.FnName << "\n"; - + // If the corresponding function is static, this should not be + // externally visible. + if (EHFrameInfo.linkage != Function::InternalLinkage) { + if (const char *GlobalEHDirective = TAI->getGlobalEHDirective()) + O << GlobalEHDirective << EHFrameInfo.FnName << "\n"; + } + // If there are no calls then you can't unwind. if (!EHFrameInfo.hasCalls) { O << EHFrameInfo.FnName << " = 0\n"; } else { O << EHFrameInfo.FnName << ":\n"; - + + // If corresponding function is weak definition, this should be too. + if ((EHFrameInfo.linkage == Function::WeakLinkage || + EHFrameInfo.linkage == Function::LinkOnceLinkage) && + TAI->getWeakDefDirective()) + O << TAI->getWeakDefDirective() << EHFrameInfo.FnName << "\n"; + // EH frame header. EmitDifference("eh_frame_end", EHFrameInfo.Number, "eh_frame_begin", EHFrameInfo.Number, true); @@ -2914,7 +2928,7 @@ private: // Indicate locations of function specific callee saved registers in // frame. - EmitFrameMoves("eh_func_begin", EHFrameInfo.Number, EHFrameInfo.Moves); + EmitFrameMoves("eh_func_begin", EHFrameInfo.Number, EHFrameInfo.Moves, true); Asm->EmitAlignment(2); EmitLabel("eh_frame_end", EHFrameInfo.Number); @@ -3361,7 +3375,8 @@ public: MMI->getPersonalityIndex(), MF->getFrameInfo()->hasCalls(), !MMI->getLandingPads().empty(), - MMI->getFrameMoves())); + MMI->getFrameMoves(), + MF->getFunction()->getLinkage())); } };