From bfa27cc5d72e061a96efbb461864d40bc8089ec2 Mon Sep 17 00:00:00 2001 From: Rafael Espindola Date: Thu, 28 Apr 2011 16:09:09 +0000 Subject: [PATCH] Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it when converting the symbol passed to .cfi_personality into bytes is the file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130400 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/MC/MCAsmInfo.h | 7 +++++++ include/llvm/MC/MCAsmInfoDarwin.h | 3 +++ lib/MC/MCAsmInfo.cpp | 8 ++++++++ lib/MC/MCAsmInfoDarwin.cpp | 13 +++++++++++++ lib/MC/MCDwarf.cpp | 15 ++++++++++++++- lib/Target/X86/X86MCAsmInfo.cpp | 16 ++++++++++++++++ lib/Target/X86/X86MCAsmInfo.h | 7 +++++++ lib/Target/X86/X86TargetMachine.cpp | 8 ++++++-- 8 files changed, 74 insertions(+), 3 deletions(-) diff --git a/include/llvm/MC/MCAsmInfo.h b/include/llvm/MC/MCAsmInfo.h index 70ad2313010..0ea9d01f680 100644 --- a/include/llvm/MC/MCAsmInfo.h +++ b/include/llvm/MC/MCAsmInfo.h @@ -20,7 +20,10 @@ #include namespace llvm { + class MCExpr; class MCSection; + class MCStreamer; + class MCSymbol; class MCContext; /// MCAsmInfo - This class is intended to be used as a base class for asm @@ -321,6 +324,10 @@ namespace llvm { return 0; } + virtual const MCExpr * + getExprForPersonalitySymbol(const MCSymbol *Sym, + MCStreamer &Streamer) const; + bool usesSunStyleELFSectionSwitchSyntax() const { return SunStyleELFSectionSwitchSyntax; } diff --git a/include/llvm/MC/MCAsmInfoDarwin.h b/include/llvm/MC/MCAsmInfoDarwin.h index c85aa3da957..143f205665b 100644 --- a/include/llvm/MC/MCAsmInfoDarwin.h +++ b/include/llvm/MC/MCAsmInfoDarwin.h @@ -25,6 +25,9 @@ namespace llvm { struct MCAsmInfoDarwin : public MCAsmInfo { explicit MCAsmInfoDarwin(); + virtual const MCExpr * + getExprForPersonalitySymbol(const MCSymbol *Sym, + MCStreamer &Streamer) const; }; } diff --git a/lib/MC/MCAsmInfo.cpp b/lib/MC/MCAsmInfo.cpp index 116c007a451..873802ae980 100644 --- a/lib/MC/MCAsmInfo.cpp +++ b/lib/MC/MCAsmInfo.cpp @@ -13,6 +13,8 @@ //===----------------------------------------------------------------------===// #include "llvm/MC/MCAsmInfo.h" +#include "llvm/MC/MCExpr.h" +#include "llvm/MC/MCStreamer.h" #include "llvm/Support/DataTypes.h" #include #include @@ -106,3 +108,9 @@ unsigned MCAsmInfo::getSLEB128Size(int Value) { } while (IsMore); return Size; } + +const MCExpr * +MCAsmInfo::getExprForPersonalitySymbol(const MCSymbol *Sym, + MCStreamer &Streamer) const { + return MCSymbolRefExpr::Create(Sym, Streamer.getContext()); +} diff --git a/lib/MC/MCAsmInfoDarwin.cpp b/lib/MC/MCAsmInfoDarwin.cpp index 526ad0da42a..04862fae161 100644 --- a/lib/MC/MCAsmInfoDarwin.cpp +++ b/lib/MC/MCAsmInfoDarwin.cpp @@ -13,6 +13,9 @@ //===----------------------------------------------------------------------===// #include "llvm/MC/MCAsmInfoDarwin.h" +#include "llvm/MC/MCContext.h" +#include "llvm/MC/MCExpr.h" +#include "llvm/MC/MCStreamer.h" using namespace llvm; MCAsmInfoDarwin::MCAsmInfoDarwin() { @@ -57,3 +60,13 @@ MCAsmInfoDarwin::MCAsmInfoDarwin() { DwarfUsesLabelOffsetForRanges = false; } +const MCExpr * +MCAsmInfoDarwin::getExprForPersonalitySymbol(const MCSymbol *Sym, + MCStreamer &Streamer) const { + MCContext &Context = Streamer.getContext(); + const MCExpr *Res = MCSymbolRefExpr::Create(Sym, Context); + MCSymbol *PCSym = Context.CreateTempSymbol(); + Streamer.EmitLabel(PCSym); + const MCExpr *PC = MCSymbolRefExpr::Create(PCSym, Context); + return MCBinaryExpr::CreateSub(Res, PC, Context); +} diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp index 974bcba7c7e..d677d0c3b61 100644 --- a/lib/MC/MCDwarf.cpp +++ b/lib/MC/MCDwarf.cpp @@ -480,6 +480,19 @@ static void EmitSymbol(MCStreamer &streamer, const MCSymbol &symbol, } } +static void EmitPersonality(MCStreamer &streamer, const MCSymbol &symbol, + unsigned symbolEncoding) { + MCContext &context = streamer.getContext(); + const MCAsmInfo &asmInfo = context.getAsmInfo(); + const MCExpr *v = asmInfo.getExprForPersonalitySymbol(&symbol, streamer); + unsigned size = getSizeForEncoding(streamer, symbolEncoding); + unsigned application = symbolEncoding & 0x70; + if (isa(v) && application == dwarf::DW_EH_PE_pcrel) + streamer.EmitPCRelValue(v, size); + else + streamer.EmitValue(v, size); +} + static const MachineLocation TranslateMachineLocation( const TargetAsmInfo &AsmInfo, const MachineLocation &Loc) { @@ -681,7 +694,7 @@ const MCSymbol &FrameEmitterImpl::EmitCIE(MCStreamer &streamer, // Personality Encoding streamer.EmitIntValue(personalityEncoding, 1); // Personality - EmitSymbol(streamer, *personality, personalityEncoding); + EmitPersonality(streamer, *personality, personalityEncoding); } if (lsda) { // LSDA Encoding diff --git a/lib/Target/X86/X86MCAsmInfo.cpp b/lib/Target/X86/X86MCAsmInfo.cpp index 62951897724..23ce3e6c8e2 100644 --- a/lib/Target/X86/X86MCAsmInfo.cpp +++ b/lib/Target/X86/X86MCAsmInfo.cpp @@ -15,7 +15,9 @@ #include "X86TargetMachine.h" #include "llvm/ADT/Triple.h" #include "llvm/MC/MCContext.h" +#include "llvm/MC/MCExpr.h" #include "llvm/MC/MCSectionELF.h" +#include "llvm/MC/MCStreamer.h" #include "llvm/Support/CommandLine.h" #include "llvm/Support/ELF.h" using namespace llvm; @@ -72,6 +74,20 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &Triple) { ExceptionsType = ExceptionHandling::DwarfTable; } +const MCExpr * +X86_64MCAsmInfoDarwin::getExprForPersonalitySymbol(const MCSymbol *Sym, + MCStreamer &Streamer) const { + MCContext &Context = Streamer.getContext(); + const MCExpr *Res = + MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_GOTPCREL, Context); + const MCExpr *Four = MCConstantExpr::Create(4, Context); + return MCBinaryExpr::CreateAdd(Res, Four, Context); +} + +X86_64MCAsmInfoDarwin::X86_64MCAsmInfoDarwin(const Triple &Triple) + : X86MCAsmInfoDarwin(Triple) { +} + X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) { AsmTransCBE = x86_asm_table; AssemblerDialect = AsmWriterFlavor; diff --git a/lib/Target/X86/X86MCAsmInfo.h b/lib/Target/X86/X86MCAsmInfo.h index 581522567d0..942797840d5 100644 --- a/lib/Target/X86/X86MCAsmInfo.h +++ b/lib/Target/X86/X86MCAsmInfo.h @@ -25,6 +25,13 @@ namespace llvm { explicit X86MCAsmInfoDarwin(const Triple &Triple); }; + struct X86_64MCAsmInfoDarwin : public X86MCAsmInfoDarwin { + explicit X86_64MCAsmInfoDarwin(const Triple &Triple); + virtual const MCExpr * + getExprForPersonalitySymbol(const MCSymbol *Sym, + MCStreamer &Streamer) const; + }; + struct X86ELFMCAsmInfo : public MCAsmInfo { explicit X86ELFMCAsmInfo(const Triple &Triple); virtual const MCSection *getNonexecutableStackSection(MCContext &Ctx) const; diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp index c63da0f9591..74833291dc7 100644 --- a/lib/Target/X86/X86TargetMachine.cpp +++ b/lib/Target/X86/X86TargetMachine.cpp @@ -27,8 +27,12 @@ using namespace llvm; static MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) { Triple TheTriple(TT); - if (TheTriple.isOSDarwin() || TheTriple.getEnvironment() == Triple::MachO) - return new X86MCAsmInfoDarwin(TheTriple); + if (TheTriple.isOSDarwin() || TheTriple.getEnvironment() == Triple::MachO) { + if (TheTriple.getArch() == Triple::x86_64) + return new X86_64MCAsmInfoDarwin(TheTriple); + else + return new X86MCAsmInfoDarwin(TheTriple); + } if (TheTriple.isOSWindows()) return new X86MCAsmInfoCOFF(TheTriple); -- 2.34.1