#ifndef LLVM_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H
#define LLVM_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H
-#include "DIE.h"
-#include "DwarfPrinter.h"
-#include "llvm/CodeGen/AsmPrinter.h"
+#include "AsmPrinterHandler.h"
#include "llvm/ADT/DenseMap.h"
-#include <string>
+#include "llvm/CodeGen/AsmPrinter.h"
+#include <vector>
namespace llvm {
+template <typename T> class SmallVectorImpl;
struct LandingPadInfo;
class MachineModuleInfo;
+class MachineInstr;
+class MachineFunction;
class MCAsmInfo;
-class Timer;
-class raw_ostream;
+class MCExpr;
+class MCSymbol;
+class Function;
+class ARMTargetStreamer;
+class AsmPrinter;
//===----------------------------------------------------------------------===//
/// 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<MachineMove> Moves;
- const Function * function;
-
- FunctionEHFrameInfo(const std::string &FN, unsigned Num, unsigned P,
- bool hC, bool hL,
- const std::vector<MachineMove> &M,
- const Function *f):
- FnName(FN), Number(Num), PersonalityIndex(P),
- hasCalls(hC), hasLandingPads(hL), Moves(M), function (f) { }
- };
-
- std::vector<FunctionEHFrameInfo> 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<unsigned, bool> UsesLSDA;
-
- /// 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;
-
- /// shouldEmitFrameModule - Per-module flag to indicate if frame moves
- /// should be emitted.
- bool shouldEmitMovesModule;
+class DwarfException : public AsmPrinterHandler {
+protected:
+ /// Asm - Target of Dwarf emission.
+ AsmPrinter *Asm;
- /// ExceptionTimer - Timer for the Dwarf exception writer.
- Timer *ExceptionTimer;
-
- /// SizeOfEncodedValue - Return the size of the encoding in bytes.
- unsigned SizeOfEncodedValue(unsigned Encoding);
-
- /// 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);
-
- /// EmitFDE - Emit the Frame Description Entry (FDE) for the function.
- void EmitFDE(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.
+ /// MMI - Collected machine module information.
+ MachineModuleInfo *MMI;
/// SharedTypeIds - How many leading type ids two landing pads have in common.
static unsigned SharedTypeIds(const LandingPadInfo *L,
/// 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; }
- };
-
/// PadRange - Structure holding a try-range and the associated landing pad.
struct PadRange {
// The index of the landing pad.
unsigned RangeIndex;
};
- typedef DenseMap<unsigned, PadRange, KeyInfo> RangeMapType;
+ typedef DenseMap<MCSymbol *, PadRange> RangeMapType;
/// 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;
+ unsigned Previous;
};
/// 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.
+ MCSymbol *BeginLabel; // zero indicates the start of the function.
+ MCSymbol *EndLabel; // zero indicates the end of the function.
// The landing pad starts at PadLabel.
- unsigned PadLabel; // zero indicates that there is no landing pad.
+ MCSymbol *PadLabel; // zero indicates that there is no landing pad.
unsigned Action;
};
const RangeMapType &PadMap,
const SmallVectorImpl<const LandingPadInfo *> &LPs,
const SmallVectorImpl<unsigned> &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.
//
- DwarfException(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T);
+ DwarfException(AsmPrinter *A);
virtual ~DwarfException();
- /// BeginModule - Emit all exception information that should come prior to the
+ /// endModule - Emit all exception information that should come after the
+ /// content.
+ virtual void endModule();
+
+ /// beginFunction - Gather pre-function exception information. Assumes being
+ /// emitted immediately after the function entry point.
+ virtual void beginFunction(const MachineFunction *MF);
+
+ /// endFunction - Gather and emit post-function exception information.
+ virtual void endFunction(const MachineFunction *);
+
+ // We don't need these.
+ virtual void setSymbolSize(const MCSymbol *Sym, uint64_t Size) {}
+ virtual void beginInstruction(const MachineInstr *MI) {}
+ virtual void endInstruction() {}
+};
+
+class DwarfCFIException : public DwarfException {
+ /// 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;
+
+ AsmPrinter::CFIMoveType moveTypeModule;
+
+public:
+ //===--------------------------------------------------------------------===//
+ // Main entry points.
+ //
+ DwarfCFIException(AsmPrinter *A);
+ virtual ~DwarfCFIException();
+
+ /// endModule - Emit all exception information that should come after the
+ /// content.
+ virtual void endModule();
+
+ /// beginFunction - Gather pre-function exception information. Assumes being
+ /// emitted immediately after the function entry point.
+ virtual void beginFunction(const MachineFunction *MF);
+
+ /// endFunction - Gather and emit post-function exception information.
+ virtual void endFunction(const MachineFunction *);
+};
+
+class ARMException : public DwarfException {
+ void EmitTypeInfos(unsigned TTypeEncoding);
+ 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
/// content.
- void BeginModule(Module *m, MachineModuleInfo *mmi) {
- this->M = m;
- this->MMI = mmi;
- }
+ virtual void endModule();
+
+ /// beginFunction - Gather pre-function exception information. Assumes being
+ /// emitted immediately after the function entry point.
+ virtual void beginFunction(const MachineFunction *MF);
+
+ /// endFunction - Gather and emit post-function exception information.
+ virtual void endFunction(const MachineFunction *);
+};
+
+class Win64Exception : public DwarfException {
+ /// shouldEmitPersonality - Per-function flag to indicate if personality
+ /// info should be emitted.
+ bool shouldEmitPersonality;
+
+ /// 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;
+
+public:
+ //===--------------------------------------------------------------------===//
+ // Main entry points.
+ //
+ Win64Exception(AsmPrinter *A);
+ virtual ~Win64Exception();
- /// EndModule - Emit all exception information that should come after the
+ /// endModule - Emit all exception information that should come after the
/// content.
- void EndModule();
+ virtual void endModule();
- /// 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);
+ virtual void beginFunction(const MachineFunction *MF);
- /// EndFunction - Gather and emit post-function exception information.
- void EndFunction();
+ /// endFunction - Gather and emit post-function exception information.
+ virtual void endFunction(const MachineFunction *);
};
} // End of namespace llvm
projects / oota-llvm.git / blobdiff