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From Craig Silverstein: Support debug info for shared libraries.

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This commit is contained in:
Ian Lance Taylor
2007-11-13 01:26:27 +00:00
parent f4c43811f7
commit af674d1d6c
2 changed files with 110 additions and 50 deletions
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24
gold/dwarf_reader.h
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@ -90,6 +90,10 @@ class Dwarf_line_info
process_one_opcode(const unsigned char* start,
struct LineStateMachine* lsm, size_t* len);
// Some parts of processing differ depending on whether the input
// was a .o file or not.
bool input_is_relobj();
// If we saw anything amiss while parsing, we set this to false.
// Then addr2line will always fail (rather than return possibly-
// corrupt data).
@ -123,15 +127,20 @@ class Dwarf_line_info
// This is used to figure out what section to apply a relocation to.
const unsigned char* symtab_buffer_;
const unsigned char* symtab_buffer_end_;
off_t symtab_buffer_size_;
// Holds the directories and files as we see them.
std::vector<std::string> directories_;
// Holds the directories and files as we see them. We have an array
// of directory-lists, one for each .o file we're reading (usually
// there will just be one, but there may be more if input is a .so).
std::vector<std::vector<std::string> > directories_;
// The first part is an index into directories_, the second the filename.
std::vector< std::pair<int, std::string> > files_;
std::vector<std::vector< std::pair<int, std::string> > > files_;
// A map from offset of the relocation target to the shndx and
// addend for the relocation.
// An index into the current directories_ and files_ vectors.
int current_header_index_;
// A sorted map from offset of the relocation target to the shndx
// and addend for the relocation.
typedef std::map<typename elfcpp::Elf_types<size>::Elf_Addr,
std::pair<unsigned int,
typename elfcpp::Elf_types<size>::Elf_Swxword> >
@ -143,8 +152,9 @@ class Dwarf_line_info
struct Offset_to_lineno_entry
{
off_t offset;
int header_num; // which file-list to use (i.e. which .o file are we in)
int file_num; // a pointer into files_
int line_num;
int line_num; // the line number in the source file
// Offsets are unique within a section, so that's a sufficient sort key.
bool operator<(const Offset_to_lineno_entry& that) const
{ return this->offset < that.offset; }