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From Craig Silverstein: Templatize the Dwarf reader.

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This commit is contained in:
Ian Lance Taylor
2007-11-07 00:49:56 +00:00
parent a7a81c1d9d
commit e43872e995
3 changed files with 40 additions and 62 deletions
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26
gold/dwarf_reader.h
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@ -36,6 +36,7 @@ struct LineStateMachine;
// This class is used to read the line information from the debugging
// section of an object file.
template<int size, bool big_endian>
class Dwarf_line_info
{
public:
@ -49,20 +50,8 @@ class Dwarf_line_info
{ }
// Start processing line info, and populates the offset_map_.
template<int size, bool big_endian>
void
read_line_mappings()
{
while (buffer_ < buffer_end_)
{
const unsigned char* lineptr = buffer_;
lineptr = this->read_header_prolog<size, big_endian>(lineptr);
lineptr = this->read_header_tables(lineptr);
lineptr = this->read_lines(size, big_endian, lineptr);
buffer_ = lineptr;
}
finalize_line_number_map();
}
read_line_mappings();
// Given a section number and an offset, returns the associated
// file and line-number, as a string: "file:lineno". If unable
@ -74,7 +63,6 @@ class Dwarf_line_info
private:
// Reads the DWARF2/3 header for this line info. Each takes as input
// a starting buffer position, and returns the ending position.
template<int size, bool big_endian>
const unsigned char*
read_header_prolog(const unsigned char* lineptr);
@ -83,22 +71,16 @@ class Dwarf_line_info
// Reads the DWARF2/3 line information.
const unsigned char*
read_lines(int size, bool big_endian, const unsigned char* lineptr);
read_lines(const unsigned char* lineptr);
// Process a single line info opcode at START using the state
// machine at LSM. Return true if we should define a line using the
// current state of the line state machine. Place the length of the
// opcode in LEN.
bool
process_one_opcode(int size, bool big_endian,
const unsigned char* start,
process_one_opcode(const unsigned char* start,
struct LineStateMachine* lsm, size_t* len);
// Called after all line number have been read, to ready
// line_number_map_ for calls to addr2line().
void
finalize_line_number_map();
// A DWARF2/3 line info header. This is not the same size as in the
// actual file, as the one in the file may have a 32 bit or 64 bit
// lengths.