aboutsummaryrefslogtreecommitdiffstats
path: root/lib/DebugInfo/DWARFDebugLine.h
diff options
context:
space:
mode:
Diffstat (limited to 'lib/DebugInfo/DWARFDebugLine.h')
-rw-r--r--lib/DebugInfo/DWARFDebugLine.h238
1 files changed, 0 insertions, 238 deletions
diff --git a/lib/DebugInfo/DWARFDebugLine.h b/lib/DebugInfo/DWARFDebugLine.h
deleted file mode 100644
index 7a6f1bd..0000000
--- a/lib/DebugInfo/DWARFDebugLine.h
+++ /dev/null
@@ -1,238 +0,0 @@
-//===-- DWARFDebugLine.h ----------------------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_DEBUGINFO_DWARFDEBUGLINE_H
-#define LLVM_LIB_DEBUGINFO_DWARFDEBUGLINE_H
-
-#include "DWARFRelocMap.h"
-#include "llvm/DebugInfo/DIContext.h"
-#include "llvm/Support/DataExtractor.h"
-#include <map>
-#include <string>
-#include <vector>
-
-namespace llvm {
-
-class raw_ostream;
-
-class DWARFDebugLine {
-public:
- DWARFDebugLine(const RelocAddrMap* LineInfoRelocMap) : RelocMap(LineInfoRelocMap) {}
- struct FileNameEntry {
- FileNameEntry() : Name(nullptr), DirIdx(0), ModTime(0), Length(0) {}
-
- const char *Name;
- uint64_t DirIdx;
- uint64_t ModTime;
- uint64_t Length;
- };
-
- struct Prologue {
- Prologue();
-
- // The size in bytes of the statement information for this compilation unit
- // (not including the total_length field itself).
- uint32_t TotalLength;
- // Version identifier for the statement information format.
- uint16_t Version;
- // The number of bytes following the prologue_length field to the beginning
- // of the first byte of the statement program itself.
- uint32_t PrologueLength;
- // The size in bytes of the smallest target machine instruction. Statement
- // program opcodes that alter the address register first multiply their
- // operands by this value.
- uint8_t MinInstLength;
- // The maximum number of individual operations that may be encoded in an
- // instruction.
- uint8_t MaxOpsPerInst;
- // The initial value of theis_stmtregister.
- uint8_t DefaultIsStmt;
- // This parameter affects the meaning of the special opcodes. See below.
- int8_t LineBase;
- // This parameter affects the meaning of the special opcodes. See below.
- uint8_t LineRange;
- // The number assigned to the first special opcode.
- uint8_t OpcodeBase;
- std::vector<uint8_t> StandardOpcodeLengths;
- std::vector<const char*> IncludeDirectories;
- std::vector<FileNameEntry> FileNames;
-
- // Length of the prologue in bytes.
- uint32_t getLength() const {
- return PrologueLength + sizeof(TotalLength) + sizeof(Version) +
- sizeof(PrologueLength);
- }
- // Length of the line table data in bytes (not including the prologue).
- uint32_t getStatementTableLength() const {
- return TotalLength + sizeof(TotalLength) - getLength();
- }
- int32_t getMaxLineIncrementForSpecialOpcode() const {
- return LineBase + (int8_t)LineRange - 1;
- }
-
- void clear();
- void dump(raw_ostream &OS) const;
- bool parse(DataExtractor debug_line_data, uint32_t *offset_ptr);
- };
-
- // Standard .debug_line state machine structure.
- struct Row {
- explicit Row(bool default_is_stmt = false);
-
- /// Called after a row is appended to the matrix.
- void postAppend();
- void reset(bool default_is_stmt);
- void dump(raw_ostream &OS) const;
-
- static bool orderByAddress(const Row& LHS, const Row& RHS) {
- return LHS.Address < RHS.Address;
- }
-
- // The program-counter value corresponding to a machine instruction
- // generated by the compiler.
- uint64_t Address;
- // An unsigned integer indicating a source line number. Lines are numbered
- // beginning at 1. The compiler may emit the value 0 in cases where an
- // instruction cannot be attributed to any source line.
- uint32_t Line;
- // An unsigned integer indicating a column number within a source line.
- // Columns are numbered beginning at 1. The value 0 is reserved to indicate
- // that a statement begins at the 'left edge' of the line.
- uint16_t Column;
- // An unsigned integer indicating the identity of the source file
- // corresponding to a machine instruction.
- uint16_t File;
- // An unsigned integer whose value encodes the applicable instruction set
- // architecture for the current instruction.
- uint8_t Isa;
- // An unsigned integer representing the DWARF path discriminator value
- // for this location.
- uint32_t Discriminator;
- // A boolean indicating that the current instruction is the beginning of a
- // statement.
- uint8_t IsStmt:1,
- // A boolean indicating that the current instruction is the
- // beginning of a basic block.
- BasicBlock:1,
- // A boolean indicating that the current address is that of the
- // first byte after the end of a sequence of target machine
- // instructions.
- EndSequence:1,
- // A boolean indicating that the current address is one (of possibly
- // many) where execution should be suspended for an entry breakpoint
- // of a function.
- PrologueEnd:1,
- // A boolean indicating that the current address is one (of possibly
- // many) where execution should be suspended for an exit breakpoint
- // of a function.
- EpilogueBegin:1;
- };
-
- // Represents a series of contiguous machine instructions. Line table for each
- // compilation unit may consist of multiple sequences, which are not
- // guaranteed to be in the order of ascending instruction address.
- struct Sequence {
- // Sequence describes instructions at address range [LowPC, HighPC)
- // and is described by line table rows [FirstRowIndex, LastRowIndex).
- uint64_t LowPC;
- uint64_t HighPC;
- unsigned FirstRowIndex;
- unsigned LastRowIndex;
- bool Empty;
-
- Sequence();
- void reset();
-
- static bool orderByLowPC(const Sequence& LHS, const Sequence& RHS) {
- return LHS.LowPC < RHS.LowPC;
- }
- bool isValid() const {
- return !Empty && (LowPC < HighPC) && (FirstRowIndex < LastRowIndex);
- }
- bool containsPC(uint64_t pc) const {
- return (LowPC <= pc && pc < HighPC);
- }
- };
-
- struct LineTable {
- LineTable();
-
- void appendRow(const DWARFDebugLine::Row &R) {
- Rows.push_back(R);
- }
- void appendSequence(const DWARFDebugLine::Sequence &S) {
- Sequences.push_back(S);
- }
-
- // Returns the index of the row with file/line info for a given address,
- // or -1 if there is no such row.
- uint32_t lookupAddress(uint64_t address) const;
-
- bool lookupAddressRange(uint64_t address, uint64_t size,
- std::vector<uint32_t> &result) const;
-
- // Extracts filename by its index in filename table in prologue.
- // Returns true on success.
- bool getFileNameByIndex(uint64_t FileIndex, const char *CompDir,
- DILineInfoSpecifier::FileLineInfoKind Kind,
- std::string &Result) const;
-
- // Fills the Result argument with the file and line information
- // corresponding to Address. Returns true on success.
- bool getFileLineInfoForAddress(uint64_t Address, const char *CompDir,
- DILineInfoSpecifier::FileLineInfoKind Kind,
- DILineInfo &Result) const;
-
- void dump(raw_ostream &OS) const;
- void clear();
-
- /// Parse prologue and all rows.
- bool parse(DataExtractor debug_line_data, const RelocAddrMap *RMap,
- uint32_t *offset_ptr);
-
- struct Prologue Prologue;
- typedef std::vector<Row> RowVector;
- typedef RowVector::const_iterator RowIter;
- typedef std::vector<Sequence> SequenceVector;
- typedef SequenceVector::const_iterator SequenceIter;
- RowVector Rows;
- SequenceVector Sequences;
- };
-
- const LineTable *getLineTable(uint32_t offset) const;
- const LineTable *getOrParseLineTable(DataExtractor debug_line_data,
- uint32_t offset);
-
-private:
- struct ParsingState {
- ParsingState(struct LineTable *LT);
-
- void resetRowAndSequence();
- void appendRowToMatrix(uint32_t offset);
-
- // Line table we're currently parsing.
- struct LineTable *LineTable;
- // The row number that starts at zero for the prologue, and increases for
- // each row added to the matrix.
- unsigned RowNumber;
- struct Row Row;
- struct Sequence Sequence;
- };
-
- typedef std::map<uint32_t, LineTable> LineTableMapTy;
- typedef LineTableMapTy::iterator LineTableIter;
- typedef LineTableMapTy::const_iterator LineTableConstIter;
-
- const RelocAddrMap *RelocMap;
- LineTableMapTy LineTableMap;
-};
-
-}
-
-#endif