diff options
Diffstat (limited to 'gold/incremental-dump.cc')
| -rw-r--r-- | gold/incremental-dump.cc | 404 |
1 files changed, 321 insertions, 83 deletions
diff --git a/gold/incremental-dump.cc b/gold/incremental-dump.cc index e174b99..98555cd 100644 --- a/gold/incremental-dump.cc +++ b/gold/incremental-dump.cc @@ -1,6 +1,6 @@ -// inremental.cc -- incremental linking test/deubg tool +// incremental.cc -- incremental linking test/debug tool -// Copyright 2009 Free Software Foundation, Inc. +// Copyright 2009, 2010 Free Software Foundation, Inc. // Written by Rafael Avila de Espindola <rafael.espindola@gmail.com> // This file is part of gold. @@ -32,6 +32,7 @@ #include <stdio.h> #include <errno.h> +#include <time.h> #include "incremental.h" @@ -43,15 +44,51 @@ namespace gold using namespace gold; template<int size, bool big_endian> +static typename Incremental_inputs_reader<size, big_endian>:: + Incremental_input_entry_reader +find_input_containing_global( + Incremental_inputs_reader<size, big_endian>& incremental_inputs, + unsigned int offset, + unsigned int* symndx) +{ + typedef Incremental_inputs_reader<size, big_endian> Inputs_reader; + for (unsigned int i = 0; i < incremental_inputs.input_file_count(); ++i) + { + typename Inputs_reader::Incremental_input_entry_reader input_file = + incremental_inputs.input_file(i); + if (input_file.type() != INCREMENTAL_INPUT_OBJECT + && input_file.type() != INCREMENTAL_INPUT_ARCHIVE_MEMBER) + continue; + unsigned int nsyms = input_file.get_global_symbol_count(); + if (offset >= input_file.get_symbol_offset(0) + && offset < input_file.get_symbol_offset(nsyms)) + { + *symndx = (offset - input_file.get_symbol_offset(0)) / 16; + return input_file; + } + } + gold_unreachable(); +} + +template<int size, bool big_endian> static void -dump_incremental_inputs(const char* argv0, - const char* filename, Incremental_binary* inc) +dump_incremental_inputs(const char* argv0, const char* filename, + Incremental_binary* inc) { bool t; - unsigned int strtab_shndx; - Incremental_binary::Location location; - - t = inc->find_incremental_inputs_section(&location, &strtab_shndx); + unsigned int inputs_shndx; + unsigned int isymtab_shndx; + unsigned int irelocs_shndx; + unsigned int istrtab_shndx; + typedef Incremental_binary::Location Location; + typedef Incremental_binary::View View; + typedef Incremental_inputs_reader<size, big_endian> Inputs_reader; + typedef typename Inputs_reader::Incremental_input_entry_reader Entry_reader; + + // Find the .gnu_incremental_inputs, _symtab, _relocs, and _strtab sections. + + t = inc->find_incremental_inputs_sections(&inputs_shndx, &isymtab_shndx, + &irelocs_shndx, &istrtab_shndx); if (!t) { fprintf(stderr, "%s: %s: no .gnu_incremental_inputs section\n", argv0, @@ -59,105 +96,306 @@ dump_incremental_inputs(const char* argv0, exit (1); } - Incremental_binary::View inputs_view(inc->view(location)); - const unsigned char* p = inputs_view.data(); + elfcpp::Elf_file<size, big_endian, Incremental_binary> elf_file(inc); + + // Get a view of the .gnu_incremental_inputs section. + + Location inputs_location(elf_file.section_contents(inputs_shndx)); + View inputs_view(inc->view(inputs_location)); + + // Get the .gnu_incremental_strtab section as a string table. - Incremental_inputs_header<size, big_endian> incremental_header(p); + Location istrtab_location(elf_file.section_contents(istrtab_shndx)); + View istrtab_view(inc->view(istrtab_location)); + elfcpp::Elf_strtab istrtab(istrtab_view.data(), istrtab_location.data_size); - const unsigned char* incremental_inputs_base = - (p + sizeof(Incremental_inputs_header_data)); + // Create a reader object for the .gnu_incremental_inputs section. - if (incremental_header.get_version() != 1) + Incremental_inputs_reader<size, big_endian> + incremental_inputs(inputs_view.data(), istrtab); + + if (incremental_inputs.version() != 1) { fprintf(stderr, "%s: %s: unknown incremental version %d\n", argv0, - filename, incremental_header.get_version()); + filename, incremental_inputs.version()); exit(1); } - elfcpp::Elf_file<size, big_endian, Incremental_binary> elf_file(inc); - - if (elf_file.section_type(strtab_shndx) != elfcpp::SHT_STRTAB) + const char* command_line = incremental_inputs.command_line(); + if (command_line == NULL) { fprintf(stderr, - "%s: %s: invalid string table section %u (type %d != %d)\n", - argv0, filename, strtab_shndx, - elf_file.section_type(strtab_shndx), elfcpp::SHT_STRTAB); + "%s: %s: failed to get link command line\n", + argv0, filename); exit(1); } + printf("Link command line: %s\n", command_line); - Incremental_binary::Location - strtab_location(elf_file.section_contents(strtab_shndx)); + printf("\nInput files:\n"); + for (unsigned int i = 0; i < incremental_inputs.input_file_count(); ++i) + { + typedef Incremental_inputs_reader<size, big_endian> Inputs_reader; + typename Inputs_reader::Incremental_input_entry_reader input_file = + incremental_inputs.input_file(i); + + const char* objname = input_file.filename(); + if (objname == NULL) + { + fprintf(stderr,"%s: %s: failed to get file name for object %u\n", + argv0, filename, i); + exit(1); + } + printf("[%d] %s\n", i, objname); + + Timespec mtime = input_file.get_mtime(); + printf(" Timestamp: %llu.%09d %s", + static_cast<unsigned long long>(mtime.seconds), + mtime.nanoseconds, + ctime(&mtime.seconds)); + + Incremental_input_type input_type = input_file.type(); + printf(" Type: "); + switch (input_type) + { + case INCREMENTAL_INPUT_OBJECT: + { + printf("Object\n"); + printf(" Input section count: %d\n", + input_file.get_input_section_count()); + printf(" Symbol count: %d\n", + input_file.get_global_symbol_count()); + } + break; + case INCREMENTAL_INPUT_ARCHIVE_MEMBER: + { + printf("Archive member\n"); + printf(" Input section count: %d\n", + input_file.get_input_section_count()); + printf(" Symbol count: %d\n", + input_file.get_global_symbol_count()); + } + break; + case INCREMENTAL_INPUT_ARCHIVE: + { + printf("Archive\n"); + printf(" Member count: %d\n", input_file.get_member_count()); + printf(" Unused symbol count: %d\n", + input_file.get_unused_symbol_count()); + } + break; + case INCREMENTAL_INPUT_SHARED_LIBRARY: + { + printf("Shared library\n"); + printf(" Symbol count: %d\n", + input_file.get_global_symbol_count()); + } + break; + case INCREMENTAL_INPUT_SCRIPT: + printf("Linker script\n"); + break; + default: + fprintf(stderr, "%s: invalid file type for object %u: %d\n", + argv0, i, input_type); + exit(1); + } + } - Incremental_binary::View strtab_view(inc->view(strtab_location)); - p = strtab_view.data(); + printf("\nInput sections:\n"); + for (unsigned int i = 0; i < incremental_inputs.input_file_count(); ++i) + { + typedef Incremental_inputs_reader<size, big_endian> Inputs_reader; + typedef typename Inputs_reader::Incremental_input_entry_reader + Entry_reader; + + Entry_reader input_file(incremental_inputs.input_file(i)); + + if (input_file.type() != INCREMENTAL_INPUT_OBJECT + && input_file.type() != INCREMENTAL_INPUT_ARCHIVE_MEMBER) + continue; + + const char* objname = input_file.filename(); + if (objname == NULL) + { + fprintf(stderr,"%s: %s: failed to get file name for object %u\n", + argv0, filename, i); + exit(1); + } + + printf("[%d] %s\n", i, objname); + + printf(" %3s %6s %8s %8s %s\n", + "n", "outndx", "offset", "size", "name"); + unsigned int nsections = input_file.get_input_section_count(); + for (unsigned int shndx = 0; shndx < nsections; ++shndx) + { + typename Entry_reader::Input_section_info info( + input_file.get_input_section(shndx)); + printf(" %3d %6d %8lld %8lld %s\n", shndx, + info.output_shndx, + static_cast<long long>(info.sh_offset), + static_cast<long long>(info.sh_size), + info.name); + } + } - elfcpp::Elf_strtab strtab(strtab_view.data(), strtab_location.data_size); - const char* command_line; - elfcpp::Elf_Word command_line_offset = - incremental_header.get_command_line_offset(); - t = strtab.get_c_string(command_line_offset, &command_line); + printf("\nGlobal symbols per input file:\n"); + for (unsigned int i = 0; i < incremental_inputs.input_file_count(); ++i) + { + typedef Incremental_inputs_reader<size, big_endian> Inputs_reader; + typedef typename Inputs_reader::Incremental_input_entry_reader + Entry_reader; + + Entry_reader input_file(incremental_inputs.input_file(i)); + + if (input_file.type() != INCREMENTAL_INPUT_OBJECT + && input_file.type() != INCREMENTAL_INPUT_ARCHIVE_MEMBER) + continue; + + const char* objname = input_file.filename(); + if (objname == NULL) + { + fprintf(stderr,"%s: %s: failed to get file name for object %u\n", + argv0, filename, i); + exit(1); + } + + printf("[%d] %s\n", i, objname); + + unsigned int nsyms = input_file.get_global_symbol_count(); + if (nsyms > 0) + printf(" %6s %8s %8s %8s %8s\n", + "outndx", "offset", "chain", "#relocs", "rbase"); + for (unsigned int symndx = 0; symndx < nsyms; ++symndx) + { + typename Entry_reader::Global_symbol_info info( + input_file.get_global_symbol_info(symndx)); + printf(" %6d %8d %8d %8d %8d\n", + info.output_symndx, + input_file.get_symbol_offset(symndx), + info.next_offset, + info.reloc_count, + info.reloc_offset); + } + } - if (!t) + // Get a view of the .symtab section. + + unsigned int symtab_shndx = elf_file.find_section_by_type(elfcpp::SHT_SYMTAB); + if (symtab_shndx == elfcpp::SHN_UNDEF) // Not found. { - fprintf(stderr, - "%s: %s: failed to get link command line: %zu out of range\n", - argv0, filename, - static_cast<size_t>(command_line_offset)); - exit(1); + fprintf(stderr, "%s: %s: no symbol table section\n", argv0, filename); + exit (1); } + Location symtab_location(elf_file.section_contents(symtab_shndx)); + View symtab_view(inc->view(symtab_location)); - printf("Link command line: %s\n", command_line); + // Get a view of the .strtab section. - printf("Input files:\n"); - for (unsigned i = 0; i < incremental_header.get_input_file_count(); ++i) + unsigned int strtab_shndx = elf_file.section_link(symtab_shndx); + if (strtab_shndx == elfcpp::SHN_UNDEF + || strtab_shndx > elf_file.shnum() + || elf_file.section_type(strtab_shndx) != elfcpp::SHT_STRTAB) { - const unsigned char* input_p = incremental_inputs_base + - i * sizeof(Incremental_inputs_entry_data); - Incremental_inputs_entry<size, big_endian> input(input_p); - const char* objname; + fprintf(stderr, "%s: %s: no string table section\n", argv0, filename); + exit (1); + } + Location strtab_location(elf_file.section_contents(strtab_shndx)); + View strtab_view(inc->view(strtab_location)); + elfcpp::Elf_strtab strtab(strtab_view.data(), strtab_location.data_size); + + // Get a view of the .gnu_incremental_symtab section. - t = strtab.get_c_string(input.get_filename_offset(), &objname); - if (!t) + Location isymtab_location(elf_file.section_contents(isymtab_shndx)); + View isymtab_view(inc->view(isymtab_location)); + + // Get a view of the .gnu_incremental_relocs section. + + Location irelocs_location(elf_file.section_contents(irelocs_shndx)); + View irelocs_view(inc->view(irelocs_location)); + + // The .gnu_incremental_symtab section contains entries that parallel + // the global symbols of the main symbol table. The sh_info field + // of the main symbol table's section header tells us how many global + // symbols there are, but that count does not include any global + // symbols that were forced local during the link. Therefore, we + // use the size of the .gnu_incremental_symtab section to deduce + // the number of global symbols + forced-local symbols there are + // in the symbol table. + unsigned int sym_size = elfcpp::Elf_sizes<size>::sym_size; + unsigned int nsyms = symtab_location.data_size / sym_size; + unsigned int nglobals = isymtab_location.data_size / 4; + unsigned int first_global = nsyms - nglobals; + unsigned const char* sym_p = symtab_view.data() + first_global * sym_size; + unsigned const char* isym_p = isymtab_view.data(); + + Incremental_symtab_reader<big_endian> isymtab(isymtab_view.data()); + Incremental_relocs_reader<size, big_endian> irelocs(irelocs_view.data()); + + printf("\nGlobal symbol table:\n"); + for (unsigned int i = 0; i < nglobals; i++) + { + elfcpp::Sym<size, big_endian> sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = "<unknown>"; + printf("[%d] %s\n", first_global + i, symname); + unsigned int offset = isymtab.get_list_head(i); + while (offset > 0) { - fprintf(stderr,"%s: %s: failed to get file name for object %u:" - " %zu out of range\n", argv0, filename, i, - static_cast<size_t>(input.get_filename_offset())); - exit(1); - } - printf(" %s\n", objname); - printf(" Timestamp sec = %llu\n", - static_cast<unsigned long long>(input.get_timestamp_sec())); - printf(" Timestamp nsec = %d\n", input.get_timestamp_nsec()); - printf(" Type = "); - // TODO: print the data at input->data_offset once we have it. - elfcpp::Elf_Word input_type = input.get_input_type(); - switch (input_type) - { - case INCREMENTAL_INPUT_OBJECT: - printf("Object\n"); - break; - case INCREMENTAL_INPUT_ARCHIVE: - printf("Archive\n"); - break; - case INCREMENTAL_INPUT_SHARED_LIBRARY: - printf("Shared library\n"); - break; - case INCREMENTAL_INPUT_SCRIPT: - printf("Linker script\n"); - if (input.get_data_offset() != 0) - { - fprintf(stderr,"%s: %s: %u is a script but offset is not zero", - argv0, filename, i); - exit(1); - } - break; - case INCREMENTAL_INPUT_INVALID: - default: - fprintf(stderr, "%s: invalid file type for object %u: %d\n", - argv0, i, input_type); - exit(1); - } + unsigned int sym_ndx; + Entry_reader input_file = + find_input_containing_global<size, big_endian>(incremental_inputs, + offset, &sym_ndx); + typename Entry_reader::Global_symbol_info sym_info( + input_file.get_global_symbol_info(sym_ndx)); + printf(" %s (first reloc: %d, reloc count: %d)", + input_file.filename(), sym_info.reloc_offset, + sym_info.reloc_count); + if (sym_info.output_symndx != first_global + i) + printf(" ** wrong output symndx (%d) **", sym_info.output_symndx); + printf("\n"); + // Dump the relocations from this input file for this symbol. + unsigned int r_off = sym_info.reloc_offset; + for (unsigned int j = 0; j < sym_info.reloc_count; j++) + { + printf(" %4d relocation type %3d shndx %d" + " offset %016llx addend %016llx %s\n", + r_off, + irelocs.get_r_type(r_off), + irelocs.get_r_shndx(r_off), + static_cast<long long>(irelocs.get_r_offset(r_off)), + static_cast<long long>(irelocs.get_r_addend(r_off)), + symname); + r_off += irelocs.reloc_size; + } + offset = sym_info.next_offset; + } + sym_p += sym_size; + isym_p += 4; } + + printf("\nUnused archive symbols:\n"); + for (unsigned int i = 0; i < incremental_inputs.input_file_count(); ++i) + { + Entry_reader input_file(incremental_inputs.input_file(i)); + + if (input_file.type() != INCREMENTAL_INPUT_ARCHIVE) + continue; + + const char* objname = input_file.filename(); + if (objname == NULL) + { + fprintf(stderr,"%s: %s: failed to get file name for object %u\n", + argv0, filename, i); + exit(1); + } + + printf("[%d] %s\n", i, objname); + unsigned int nsyms = input_file.get_unused_symbol_count(); + for (unsigned int symndx = 0; symndx < nsyms; ++symndx) + printf(" %s\n", input_file.get_unused_symbol(symndx)); + } + } int |