X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FAsmPrinter%2FDwarfException.h;h=15751615b7a4237e3981c7419320176aa6b7cd0f;hb=6a2f9b91379140c36a11ade6c0673bd7490eba32;hp=06b1de62fbd5e0063a3d3a45a3a2b700af65a220;hpb=b5e16af9ea04cc1f94ca631104e5e6be96546aa1;p=oota-llvm.git diff --git a/lib/CodeGen/AsmPrinter/DwarfException.h b/lib/CodeGen/AsmPrinter/DwarfException.h index 06b1de62fbd..15751615b7a 100644 --- a/lib/CodeGen/AsmPrinter/DwarfException.h +++ b/lib/CodeGen/AsmPrinter/DwarfException.h @@ -15,6 +15,7 @@ #define LLVM_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H #include "llvm/ADT/DenseMap.h" +#include "llvm/CodeGen/AsmPrinter.h" #include namespace llvm { @@ -22,13 +23,13 @@ namespace llvm { template class SmallVectorImpl; struct LandingPadInfo; class MachineModuleInfo; -class MachineMove; class MachineInstr; class MachineFunction; class MCAsmInfo; class MCExpr; class MCSymbol; class Function; +class ARMTargetStreamer; class AsmPrinter; //===----------------------------------------------------------------------===// @@ -42,26 +43,6 @@ protected: /// MMI - Collected machine module information. MachineModuleInfo *MMI; - /// EmitExceptionTable - Emit landing pads and actions. - /// - /// The general organization of the table is complex, but the basic concepts - /// are easy. First there is a header which describes the location and - /// organization of the three components that follow. - /// 1. The landing pad site information describes the range of code covered - /// by the try. In our case it's an accumulation of the ranges covered - /// by the invokes in the try. There is also a reference to the landing - /// pad that handles the exception once processed. Finally an index into - /// the actions table. - /// 2. The action table, in our case, is composed of pairs of type ids - /// and next action offset. Starting with the action index from the - /// landing pad site, each type Id is checked for a match to the current - /// exception. If it matches then the exception and type id are passed - /// on to the landing pad. Otherwise the next action is looked up. This - /// chain is terminated with a next action of zero. If no type id is - /// found the frame is unwound and handling continues. - /// 3. Type id table contains references to all the C++ typeinfo for all - /// catches in the function. This tables is reversed indexed base 1. - /// SharedTypeIds - How many leading type ids two landing pads have in common. static unsigned SharedTypeIds(const LandingPadInfo *L, const LandingPadInfo *R); @@ -118,8 +99,30 @@ protected: const RangeMapType &PadMap, const SmallVectorImpl &LPs, const SmallVectorImpl &FirstActions); + + /// EmitExceptionTable - Emit landing pads and actions. + /// + /// The general organization of the table is complex, but the basic concepts + /// are easy. First there is a header which describes the location and + /// organization of the three components that follow. + /// 1. The landing pad site information describes the range of code covered + /// by the try. In our case it's an accumulation of the ranges covered + /// by the invokes in the try. There is also a reference to the landing + /// pad that handles the exception once processed. Finally an index into + /// the actions table. + /// 2. The action table, in our case, is composed of pairs of type ids + /// and next action offset. Starting with the action index from the + /// landing pad site, each type Id is checked for a match to the current + /// exception. If it matches then the exception and type id are passed + /// on to the landing pad. Otherwise the next action is looked up. This + /// chain is terminated with a next action of zero. If no type id is + /// found the frame is unwound and handling continues. + /// 3. Type id table contains references to all the C++ typeinfo for all + /// catches in the function. This tables is reversed indexed base 1. void EmitExceptionTable(); + virtual void EmitTypeInfos(unsigned TTypeEncoding); + public: //===--------------------------------------------------------------------===// // Main entry points. @@ -140,17 +143,20 @@ public: }; class DwarfCFIException : public DwarfException { - /// shouldEmitTable - Per-function flag to indicate if EH tables should - /// be emitted. - bool shouldEmitTable; + /// shouldEmitPersonality - Per-function flag to indicate if .cfi_personality + /// should be emitted. + bool shouldEmitPersonality; + + /// shouldEmitLSDA - Per-function flag to indicate if .cfi_lsda + /// should be emitted. + bool shouldEmitLSDA; /// shouldEmitMoves - Per-function flag to indicate if frame moves info /// should be emitted. bool shouldEmitMoves; - /// shouldEmitTableModule - Per-module flag to indicate if EH tables - /// should be emitted. - bool shouldEmitTableModule; + AsmPrinter::CFIMoveType moveTypeModule; + public: //===--------------------------------------------------------------------===// // Main entry points. @@ -170,60 +176,16 @@ public: virtual void EndFunction(); }; -class DwarfTableException : public DwarfException { - /// shouldEmitTable - Per-function flag to indicate if EH tables should - /// be emitted. - bool shouldEmitTable; - - /// shouldEmitMoves - Per-function flag to indicate if frame moves info - /// should be emitted. - bool shouldEmitMoves; - - /// shouldEmitTableModule - Per-module flag to indicate if EH tables - /// should be emitted. - bool shouldEmitTableModule; - - /// shouldEmitMovesModule - Per-module flag to indicate if frame moves - /// should be emitted. - bool shouldEmitMovesModule; - - struct FunctionEHFrameInfo { - MCSymbol *FunctionEHSym; // L_foo.eh - unsigned Number; - unsigned PersonalityIndex; - bool adjustsStack; - bool hasLandingPads; - std::vector Moves; - const Function *function; - - FunctionEHFrameInfo(MCSymbol *EHSym, unsigned Num, unsigned P, - bool hC, bool hL, - const std::vector &M, - const Function *f): - FunctionEHSym(EHSym), Number(Num), PersonalityIndex(P), - adjustsStack(hC), hasLandingPads(hL), Moves(M), function (f) { } - }; - - std::vector EHFrames; - - /// UsesLSDA - Indicates whether an FDE that uses the CIE at the given index - /// uses an LSDA. If so, then we need to encode that information in the CIE's - /// augmentation. - DenseMap UsesLSDA; - - /// EmitCIE - Emit a Common Information Entry (CIE). This holds information - /// that is shared among many Frame Description Entries. There is at least - /// one CIE in every non-empty .debug_frame section. - void EmitCIE(const Function *Personality, unsigned Index); +class ARMException : public DwarfException { + void EmitTypeInfos(unsigned TTypeEncoding); + ARMTargetStreamer &getTargetStreamer(); - /// EmitFDE - Emit the Frame Description Entry (FDE) for the function. - void EmitFDE(const FunctionEHFrameInfo &EHFrameInfo); public: //===--------------------------------------------------------------------===// // Main entry points. // - DwarfTableException(AsmPrinter *A); - virtual ~DwarfTableException(); + ARMException(AsmPrinter *A); + virtual ~ARMException(); /// EndModule - Emit all exception information that should come after the /// content. @@ -237,25 +199,25 @@ public: virtual void EndFunction(); }; +class Win64Exception : public DwarfException { + /// shouldEmitPersonality - Per-function flag to indicate if personality + /// info should be emitted. + bool shouldEmitPersonality; -class ARMException : public DwarfException { - /// shouldEmitTable - Per-function flag to indicate if EH tables should - /// be emitted. - bool shouldEmitTable; + /// shouldEmitLSDA - Per-function flag to indicate if the LSDA + /// should be emitted. + bool shouldEmitLSDA; /// shouldEmitMoves - Per-function flag to indicate if frame moves info /// should be emitted. bool shouldEmitMoves; - /// shouldEmitTableModule - Per-module flag to indicate if EH tables - /// should be emitted. - bool shouldEmitTableModule; public: //===--------------------------------------------------------------------===// // Main entry points. // - ARMException(AsmPrinter *A); - virtual ~ARMException(); + Win64Exception(AsmPrinter *A); + virtual ~Win64Exception(); /// EndModule - Emit all exception information that should come after the /// content.