mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-30 21:29:28 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112673 91177308-0d34-0410-b5e6-96231b3b80d8
157 lines
5.2 KiB
C++
157 lines
5.2 KiB
C++
//===- MCDwarf.h - Machine Code Dwarf support -------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains the declaration of the MCDwarfFile to support the dwarf
|
|
// .file directive.
|
|
// TODO: add the support needed for the .loc directive.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MC_MCDWARF_H
|
|
#define LLVM_MC_MCDWARF_H
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
class MCContext;
|
|
class MCSection;
|
|
class MCSymbol;
|
|
class raw_ostream;
|
|
|
|
/// MCDwarfFile - Instances of this class represent the name of the dwarf
|
|
/// .file directive and its associated dwarf file number in the MC file,
|
|
/// and MCDwarfFile's are created and unique'd by the MCContext class where
|
|
/// the file number for each is its index into the vector of DwarfFiles (note
|
|
/// index 0 is not used and not a valid dwarf file number).
|
|
class MCDwarfFile {
|
|
// Name - the base name of the file without its directory path.
|
|
// The StringRef references memory allocated in the MCContext.
|
|
StringRef Name;
|
|
|
|
// DirIndex - the index into the list of directory names for this file name.
|
|
unsigned DirIndex;
|
|
|
|
private: // MCContext creates and uniques these.
|
|
friend class MCContext;
|
|
MCDwarfFile(StringRef name, unsigned dirIndex)
|
|
: Name(name), DirIndex(dirIndex) {}
|
|
|
|
MCDwarfFile(const MCDwarfFile&); // DO NOT IMPLEMENT
|
|
void operator=(const MCDwarfFile&); // DO NOT IMPLEMENT
|
|
public:
|
|
/// getName - Get the base name of this MCDwarfFile.
|
|
StringRef getName() const { return Name; }
|
|
|
|
/// getDirIndex - Get the dirIndex of this MCDwarfFile.
|
|
unsigned getDirIndex() const { return DirIndex; }
|
|
|
|
|
|
/// print - Print the value to the stream \arg OS.
|
|
void print(raw_ostream &OS) const;
|
|
|
|
/// dump - Print the value to stderr.
|
|
void dump() const;
|
|
};
|
|
|
|
inline raw_ostream &operator<<(raw_ostream &OS, const MCDwarfFile &DwarfFile){
|
|
DwarfFile.print(OS);
|
|
return OS;
|
|
}
|
|
|
|
/// MCDwarfLoc - Instances of this class represent the information from a
|
|
/// dwarf .loc directive.
|
|
class MCDwarfLoc {
|
|
// FileNum - the file number.
|
|
unsigned FileNum;
|
|
// Line - the line number.
|
|
unsigned Line;
|
|
// Column - the column position.
|
|
unsigned Column;
|
|
// Flags (see #define's below)
|
|
unsigned Flags;
|
|
// Isa
|
|
unsigned Isa;
|
|
|
|
#define DWARF2_FLAG_IS_STMT (1 << 0)
|
|
#define DWARF2_FLAG_BASIC_BLOCK (1 << 1)
|
|
#define DWARF2_FLAG_PROLOGUE_END (1 << 2)
|
|
#define DWARF2_FLAG_EPILOGUE_BEGIN (1 << 3)
|
|
|
|
private: // MCContext manages these
|
|
friend class MCContext;
|
|
friend class MCLineEntry;
|
|
MCDwarfLoc(unsigned fileNum, unsigned line, unsigned column, unsigned flags,
|
|
unsigned isa)
|
|
: FileNum(fileNum), Line(line), Column(column), Flags(flags), Isa(isa) {}
|
|
|
|
// Allow the default copy constructor and assignment operator to be used
|
|
// for an MCDwarfLoc object.
|
|
|
|
public:
|
|
/// setFileNum - Set the FileNum of this MCDwarfLoc.
|
|
void setFileNum(unsigned fileNum) { FileNum = fileNum; }
|
|
|
|
/// setLine - Set the Line of this MCDwarfLoc.
|
|
void setLine(unsigned line) { Line = line; }
|
|
|
|
/// setColumn - Set the Column of this MCDwarfLoc.
|
|
void setColumn(unsigned column) { Column = column; }
|
|
|
|
/// setFlags - Set the Flags of this MCDwarfLoc.
|
|
void setFlags(unsigned flags) { Flags = flags; }
|
|
|
|
/// setIsa - Set the Isa of this MCDwarfLoc.
|
|
void setIsa(unsigned isa) { Isa = isa; }
|
|
};
|
|
|
|
/// MCLineEntry - Instances of this class represent the line information for
|
|
/// the dwarf line table entries. Which is created after a machine
|
|
/// instruction is assembled and uses an address from a temporary label
|
|
/// created at the current address in the current section and the info from
|
|
/// the last .loc directive seen as stored in the context.
|
|
class MCLineEntry : public MCDwarfLoc {
|
|
MCSymbol *Label;
|
|
|
|
private:
|
|
// Allow the default copy constructor and assignment operator to be used
|
|
// for an MCLineEntry object.
|
|
|
|
public:
|
|
// Constructor to create an MCLineEntry given a symbol and the dwarf loc.
|
|
MCLineEntry(MCSymbol *label, const MCDwarfLoc loc) : MCDwarfLoc(loc),
|
|
Label(label) {}
|
|
};
|
|
|
|
/// MCLineSection - Instances of this class represent the line information
|
|
/// for a section where machine instructions have been assembled after seeing
|
|
/// .loc directives. This is the information used to build the dwarf line
|
|
/// table for a section.
|
|
class MCLineSection {
|
|
std::vector<MCLineEntry> MCLineEntries;
|
|
|
|
private:
|
|
MCLineSection(const MCLineSection&); // DO NOT IMPLEMENT
|
|
void operator=(const MCLineSection&); // DO NOT IMPLEMENT
|
|
|
|
public:
|
|
// Constructor to create an MCLineSection with an empty MCLineEntries
|
|
// vector.
|
|
MCLineSection() {}
|
|
|
|
// addLineEntry - adds an entry to this MCLineSection's line entries
|
|
void addLineEntry(const MCLineEntry &LineEntry) {
|
|
MCLineEntries.push_back(LineEntry);
|
|
}
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|