X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FAsmPrinter%2FDwarfException.h;h=e8867c0a323c1d7090331962baf4b7b23d0253c4;hb=4ceab42509518746afef0370e7aba230736a80f5;hp=a5944019d6708ff9136f62c3f8b6d5b30d61eb0f;hpb=eb9072195ca7d777a71194dcaaaa369d82f24f53;p=oota-llvm.git diff --git a/lib/CodeGen/AsmPrinter/DwarfException.h b/lib/CodeGen/AsmPrinter/DwarfException.h index a5944019d67..e8867c0a323 100644 --- a/lib/CodeGen/AsmPrinter/DwarfException.h +++ b/lib/CodeGen/AsmPrinter/DwarfException.h @@ -11,168 +11,76 @@ // //===----------------------------------------------------------------------===// -#ifndef DWARFEXCEPTION_H__ -#define DWARFEXCEPTION_H__ +#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H +#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H -#include "DIE.h" -#include "DwarfPrinter.h" +#include "EHStreamer.h" #include "llvm/CodeGen/AsmPrinter.h" -#include "llvm/ADT/DenseMap.h" -#include namespace llvm { +class MachineFunction; +class ARMTargetStreamer; -struct LandingPadInfo; -class MachineModuleInfo; -class TargetAsmInfo; -class Timer; -class raw_ostream; +class DwarfCFIException : public EHStreamer { + /// shouldEmitPersonality - Per-function flag to indicate if .cfi_personality + /// should be emitted. + bool shouldEmitPersonality; -//===----------------------------------------------------------------------===// -/// DwarfException - Emits Dwarf exception handling directives. -/// -class VISIBILITY_HIDDEN DwarfException : public Dwarf { - struct FunctionEHFrameInfo { - std::string FnName; - unsigned Number; - unsigned PersonalityIndex; - bool hasCalls; - bool hasLandingPads; - std::vector Moves; - const Function * function; - - FunctionEHFrameInfo(const std::string &FN, unsigned Num, unsigned P, - bool hC, bool hL, - const std::vector &M, - const Function *f): - FnName(FN), Number(Num), PersonalityIndex(P), - hasCalls(hC), hasLandingPads(hL), Moves(M), function (f) { } - }; - - std::vector EHFrames; - - /// shouldEmitTable - Per-function flag to indicate if EH tables should - /// be emitted. - bool shouldEmitTable; + /// 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; - - /// shouldEmitFrameModule - Per-module flag to indicate if frame moves - /// should be emitted. - bool shouldEmitMovesModule; - - /// ExceptionTimer - Timer for the Dwarf exception writer. - Timer *ExceptionTimer; - - /// EmitCommonEHFrame - Emit the common eh unwind frame. - /// - void EmitCommonEHFrame(const Function *Personality, unsigned Index); - - /// EmitEHFrame - Emit function exception frame information. - /// - void EmitEHFrame(const FunctionEHFrameInfo &EHFrameInfo); - - /// 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 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); - - /// PadLT - Order landing pads lexicographically by type id. - static bool PadLT(const LandingPadInfo *L, const LandingPadInfo *R); - - struct KeyInfo { - static inline unsigned getEmptyKey() { return -1U; } - static inline unsigned getTombstoneKey() { return -2U; } - static unsigned getHashValue(const unsigned &Key) { return Key; } - static bool isEqual(unsigned LHS, unsigned RHS) { return LHS == RHS; } - static bool isPod() { return true; } - }; - - /// ActionEntry - Structure describing an entry in the actions table. - struct ActionEntry { - int ValueForTypeID; // The value to write - may not be equal to the type id. - int NextAction; - struct ActionEntry *Previous; - }; - - /// PadRange - Structure holding a try-range and the associated landing pad. - struct PadRange { - // The index of the landing pad. - unsigned PadIndex; - // The index of the begin and end labels in the landing pad's label lists. - unsigned RangeIndex; - }; - - typedef DenseMap RangeMapType; - - /// CallSiteEntry - Structure describing an entry in the call-site table. - struct CallSiteEntry { - // The 'try-range' is BeginLabel .. EndLabel. - unsigned BeginLabel; // zero indicates the start of the function. - unsigned EndLabel; // zero indicates the end of the function. - // The landing pad starts at PadLabel. - unsigned PadLabel; // zero indicates that there is no landing pad. - unsigned Action; - }; - - void EmitExceptionTable(); + AsmPrinter::CFIMoveType moveTypeModule; public: //===--------------------------------------------------------------------===// // Main entry points. // - DwarfException(raw_ostream &OS, AsmPrinter *A, const TargetAsmInfo *T); - virtual ~DwarfException(); - - /// SetModuleInfo - Set machine module information when it's known that pass - /// manager has created it. Set by the target AsmPrinter. - void SetModuleInfo(MachineModuleInfo *mmi) { - MMI = mmi; - } + DwarfCFIException(AsmPrinter *A); + virtual ~DwarfCFIException(); - /// BeginModule - Emit all exception information that should come prior to the + /// endModule - Emit all exception information that should come after the /// content. - void BeginModule(Module *M) { - this->M = M; - } + void endModule() override; + + /// beginFunction - Gather pre-function exception information. Assumes being + /// emitted immediately after the function entry point. + void beginFunction(const MachineFunction *MF) override; + + /// endFunction - Gather and emit post-function exception information. + void endFunction(const MachineFunction *) override; +}; + +class ARMException : public EHStreamer { + void emitTypeInfos(unsigned TTypeEncoding) override; + ARMTargetStreamer &getTargetStreamer(); + + /// shouldEmitCFI - Per-function flag to indicate if frame CFI info + /// should be emitted. + bool shouldEmitCFI; + +public: + //===--------------------------------------------------------------------===// + // Main entry points. + // + ARMException(AsmPrinter *A); + virtual ~ARMException(); - /// EndModule - Emit all exception information that should come after the + /// endModule - Emit all exception information that should come after the /// content. - void EndModule(); + void endModule() override; - /// BeginFunction - Gather pre-function exception information. Assumes being + /// beginFunction - Gather pre-function exception information. Assumes being /// emitted immediately after the function entry point. - void BeginFunction(MachineFunction *MF); + void beginFunction(const MachineFunction *MF) override; - /// EndFunction - Gather and emit post-function exception information. - void EndFunction(); + /// endFunction - Gather and emit post-function exception information. + void endFunction(const MachineFunction *) override; }; - } // End of namespace llvm #endif