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GCC_except_table label but before the Lexception, which the FDE references. This causes problems as the FDE does not point to the start of an LSDA chunk. Use an unnormalized uleb128 for the call-site table length that includes the padding. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97078 91177308-0d34-0410-b5e6-96231b3b80d8
178 lines
5.9 KiB
C++
178 lines
5.9 KiB
C++
//===--- lib/CodeGen/DwarfPrinter.h - Dwarf Printer -------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Emit general DWARF directives.
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//
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//===----------------------------------------------------------------------===//
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#ifndef CODEGEN_ASMPRINTER_DWARFPRINTER_H__
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#define CODEGEN_ASMPRINTER_DWARFPRINTER_H__
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#include "DwarfLabel.h"
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#include "llvm/CodeGen/MachineLocation.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/FormattedStream.h"
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#include <vector>
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namespace llvm {
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class AsmPrinter;
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class MachineFunction;
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class MachineModuleInfo;
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class Module;
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class MCAsmInfo;
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class TargetData;
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class TargetRegisterInfo;
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class GlobalValue;
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class MCSymbol;
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class Twine;
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class DwarfPrinter {
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protected:
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~DwarfPrinter() {}
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//===-------------------------------------------------------------==---===//
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// Core attributes used by the DWARF printer.
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//
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/// O - Stream to .s file.
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raw_ostream &O;
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/// Asm - Target of Dwarf emission.
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AsmPrinter *Asm;
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/// MAI - Target asm information.
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const MCAsmInfo *MAI;
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/// TD - Target data.
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const TargetData *TD;
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/// RI - Register Information.
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const TargetRegisterInfo *RI;
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/// M - Current module.
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Module *M;
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/// MF - Current machine function.
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const MachineFunction *MF;
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/// MMI - Collected machine module information.
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MachineModuleInfo *MMI;
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/// SubprogramCount - The running count of functions being compiled.
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unsigned SubprogramCount;
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/// Flavor - A unique string indicating what dwarf producer this is, used to
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/// unique labels.
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const char * const Flavor;
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/// SetCounter - A unique number for each '.set' directive.
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unsigned SetCounter;
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DwarfPrinter(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T,
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const char *flavor);
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public:
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//===------------------------------------------------------------------===//
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// Accessors.
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//
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const AsmPrinter *getAsm() const { return Asm; }
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MachineModuleInfo *getMMI() const { return MMI; }
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const MCAsmInfo *getMCAsmInfo() const { return MAI; }
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const TargetData *getTargetData() const { return TD; }
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/// SizeOfEncodedValue - Return the size of the encoding in bytes.
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unsigned SizeOfEncodedValue(unsigned Encoding) const;
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void PrintRelDirective(unsigned Encoding) const;
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void PrintRelDirective(bool Force32Bit = false,
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bool isInSection = false) const;
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/// EOL - Print a newline character to asm stream. If a comment is present
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/// then it will be printed first. Comments should not contain '\n'.
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void EOL(const Twine &Comment) const;
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/// EmitEncodingByte - Emit a .byte 42 directive that corresponds to an
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/// encoding. If verbose assembly output is enabled, we output comments
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/// describing the encoding. Desc is a string saying what the encoding is
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/// specifying (e.g. "LSDA").
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void EmitEncodingByte(unsigned Val, const char *Desc);
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/// EmitCFAByte - Emit a .byte 42 directive for a DW_CFA_xxx value.
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void EmitCFAByte(unsigned Val);
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/// EmitSLEB128 - emit the specified signed leb128 value.
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void EmitSLEB128(int Value, const char *Desc) const;
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/// EmitULEB128 - emit the specified unsigned leb128 value.
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void EmitULEB128(unsigned Value, const char *Desc = 0,
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unsigned PadTo = 0) const;
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/// PrintLabelName - Print label name in form used by Dwarf writer.
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///
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void PrintLabelName(const DWLabel &Label) const {
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PrintLabelName(Label.getTag(), Label.getNumber());
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}
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void PrintLabelName(const char *Tag, unsigned Number) const;
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void PrintLabelName(const char *Tag, unsigned Number,
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const char *Suffix) const;
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/// EmitLabel - Emit location label for internal use by Dwarf.
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///
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void EmitLabel(const DWLabel &Label) const {
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EmitLabel(Label.getTag(), Label.getNumber());
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}
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void EmitLabel(const char *Tag, unsigned Number) const;
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/// EmitReference - Emit a reference to a label.
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///
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void EmitReference(const DWLabel &Label, bool IsPCRelative = false,
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bool Force32Bit = false) const {
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EmitReference(Label.getTag(), Label.getNumber(),
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IsPCRelative, Force32Bit);
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}
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void EmitReference(const char *Tag, unsigned Number,
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bool IsPCRelative = false,
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bool Force32Bit = false) const;
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void EmitReference(const std::string &Name, bool IsPCRelative = false,
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bool Force32Bit = false) const;
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void EmitReference(const MCSymbol *Sym, bool IsPCRelative = false,
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bool Force32Bit = false) const;
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void EmitReference(const char *Tag, unsigned Number, unsigned Encoding) const;
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void EmitReference(const MCSymbol *Sym, unsigned Encoding) const;
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void EmitReference(const GlobalValue *GV, unsigned Encoding) const;
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/// EmitDifference - Emit the difference between two labels.
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void EmitDifference(const DWLabel &LabelHi, const DWLabel &LabelLo,
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bool IsSmall = false) {
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EmitDifference(LabelHi.getTag(), LabelHi.getNumber(),
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LabelLo.getTag(), LabelLo.getNumber(),
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IsSmall);
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}
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void EmitDifference(const char *TagHi, unsigned NumberHi,
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const char *TagLo, unsigned NumberLo,
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bool IsSmall = false);
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void EmitSectionOffset(const char* Label, const char* Section,
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unsigned LabelNumber, unsigned SectionNumber,
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bool IsSmall = false, bool isEH = false,
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bool useSet = true);
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/// EmitFrameMoves - Emit frame instructions to describe the layout of the
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/// frame.
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void EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
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const std::vector<MachineMove> &Moves, bool isEH);
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};
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} // end llvm namespace
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#endif
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