diff options
Diffstat (limited to 'binutils-2.25/gold/incremental-dump.cc')
| -rw-r--r-- | binutils-2.25/gold/incremental-dump.cc | 518 |
1 files changed, 518 insertions, 0 deletions
diff --git a/binutils-2.25/gold/incremental-dump.cc b/binutils-2.25/gold/incremental-dump.cc new file mode 100644 index 00000000..53652655 --- /dev/null +++ b/binutils-2.25/gold/incremental-dump.cc @@ -0,0 +1,518 @@ +// incremental.cc -- incremental linking test/debug tool + +// Copyright 2009, 2010 Free Software Foundation, Inc. +// Written by Rafael Avila de Espindola <rafael.espindola@gmail.com> + +// This file is part of gold. + +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 3 of the License, or +// (at your option) any later version. + +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, +// MA 02110-1301, USA. + + +// This file is a (still incomplete) test/debug tool that should display +// all information available in the incremental linking sections in a +// format that is easy to read. +// Once the format is a bit more stable, this should probably be moved to +// readelf. Because of that, the use of gold's data structures and functions +// is just a short term convenience and not a design decision. + +#include "gold.h" + +#include <stdio.h> +#include <errno.h> +#include <time.h> + +#include "incremental.h" + +namespace gold +{ + class Output_file; +} + +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; + static const unsigned int global_sym_entry_size = + Incremental_inputs_reader<size, big_endian>::global_sym_entry_size; + + 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)) + / global_sym_entry_size); + return input_file; + } + } + gold_unreachable(); +} + +template<int size, bool big_endian> +static void +dump_incremental_inputs(const char* argv0, const char* filename, + Sized_incremental_binary<size, big_endian>* inc) +{ + 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; + + if (!inc->has_incremental_info()) + { + fprintf(stderr, "%s: %s: no .gnu_incremental_inputs section\n", argv0, + filename); + exit(1); + } + + // Create a reader object for the .gnu_incremental_inputs section. + + Incremental_inputs_reader<size, big_endian> + incremental_inputs(inc->inputs_reader()); + + if (incremental_inputs.version() != 2) + { + fprintf(stderr, "%s: %s: unknown incremental version %d\n", argv0, + filename, incremental_inputs.version()); + exit(1); + } + + const char* command_line = incremental_inputs.command_line(); + if (command_line == NULL) + { + fprintf(stderr, + "%s: %s: failed to get link command line\n", + argv0, filename); + exit(1); + } + printf("Link command line: %s\n", command_line); + + printf("\nInput files:\n"); + for (unsigned int i = 0; i < incremental_inputs.input_file_count(); ++i) + { + 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)); + + printf(" Serial Number: %d\n", input_file.arg_serial()); + printf(" In System Directory: %s\n", + input_file.is_in_system_directory() ? "true" : "false"); + + Incremental_input_type input_type = input_file.type(); + printf(" Type: "); + switch (input_type) + { + case INCREMENTAL_INPUT_OBJECT: + case INCREMENTAL_INPUT_ARCHIVE_MEMBER: + printf("%s\n", (input_type == INCREMENTAL_INPUT_OBJECT + ? "Object" : "Archive member")); + printf(" Input section count: %d\n", + input_file.get_input_section_count()); + printf(" Global symbol count: %d\n", + input_file.get_global_symbol_count()); + printf(" Local symbol offset: %d\n", + input_file.get_local_symbol_offset()); + printf(" Local symbol count: %d\n", + input_file.get_local_symbol_count()); + printf(" First dynamic reloc: %d\n", + input_file.get_first_dyn_reloc()); + printf(" Dynamic reloc count: %d\n", + input_file.get_dyn_reloc_count()); + printf(" COMDAT group count: %d\n", + input_file.get_comdat_group_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(" As needed: %s\n", + input_file.as_needed() ? "true" : "false"); + printf(" soname: %s\n", + input_file.get_soname()); + printf(" Symbol count: %d\n", + input_file.get_global_symbol_count()); + break; + case INCREMENTAL_INPUT_SCRIPT: + printf("Linker script\n"); + printf(" Object count: %d\n", input_file.get_object_count()); + break; + default: + fprintf(stderr, "%s: invalid file type for object %u: %d\n", + argv0, i, input_type); + exit(1); + } + } + + printf("\nInput sections:\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_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 + 1, + info.output_shndx, + static_cast<long long>(info.sh_offset), + static_cast<long long>(info.sh_size), + info.name); + } + + unsigned int ncomdat = input_file.get_comdat_group_count(); + for (unsigned int i = 0; i < ncomdat; ++i) + printf(" Comdat group: %s\n", + input_file.get_comdat_group_signature(i)); + } + + // Get a view of the .symtab section. + + elfcpp::Elf_file<size, big_endian, Incremental_binary> elf_file(inc); + + 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: 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)); + + // Get a view of the .strtab section. + + 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) + { + 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); + + // 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. + Incremental_symtab_reader<big_endian> isymtab(inc->symtab_reader()); + Incremental_relocs_reader<size, big_endian> irelocs(inc->relocs_reader()); + unsigned int sym_size = elfcpp::Elf_sizes<size>::sym_size; + unsigned int nsyms = symtab_location.data_size / sym_size; + unsigned int nglobals = isymtab.symbol_count(); + unsigned int first_global = nsyms - nglobals; + unsigned const char* sym_p; + + printf("\nGlobal symbols per input file:\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_OBJECT + && input_file.type() != INCREMENTAL_INPUT_ARCHIVE_MEMBER + && input_file.type() != INCREMENTAL_INPUT_SHARED_LIBRARY) + 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 %6s %8s %8s %8s %8s\n", + "outndx", "shndx", "offset", "chain", "#relocs", "rbase"); + if (input_file.type() == INCREMENTAL_INPUT_SHARED_LIBRARY) + { + for (unsigned int symndx = 0; symndx < nsyms; ++symndx) + { + bool is_def; + bool is_copy; + unsigned int output_symndx = + input_file.get_output_symbol_index(symndx, &is_def, &is_copy); + sym_p = symtab_view.data() + output_symndx * sym_size; + elfcpp::Sym<size, big_endian> sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = "<unknown>"; + printf(" %6d %6s %8s %8s %8s %8s %-5s %s\n", + output_symndx, + "", "", "", "", "", + is_copy ? "COPY" : (is_def ? "DEF" : "UNDEF"), + symname); + } + } + else + { + for (unsigned int symndx = 0; symndx < nsyms; ++symndx) + { + Incremental_global_symbol_reader<big_endian> info( + input_file.get_global_symbol_reader(symndx)); + unsigned int output_symndx = info.output_symndx(); + sym_p = symtab_view.data() + output_symndx * sym_size; + elfcpp::Sym<size, big_endian> sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = "<unknown>"; + printf(" %6d %6d %8d %8d %8d %8d %-5s %s\n", + output_symndx, + info.shndx() == -1U ? -1 : info.shndx(), + input_file.get_symbol_offset(symndx), + info.next_offset(), + info.reloc_count(), + info.reloc_offset(), + (info.shndx() == -1U + ? "BASE" + : info.shndx() == 0 ? "UNDEF" : "DEF"), + symname); + } + } + } + + sym_p = symtab_view.data() + first_global * sym_size; + 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) + { + unsigned int sym_ndx; + Entry_reader input_file = + find_input_containing_global<size, big_endian>(incremental_inputs, + offset, &sym_ndx); + Incremental_global_symbol_reader<big_endian> sym_info( + input_file.get_global_symbol_reader(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 %2d" + " 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; + } + + Incremental_got_plt_reader<big_endian> igot_plt(inc->got_plt_reader()); + unsigned int ngot = igot_plt.get_got_entry_count(); + unsigned int nplt = igot_plt.get_plt_entry_count(); + + printf("\nGOT entries:\n"); + for (unsigned int i = 0; i < ngot; ++i) + { + unsigned int got_type = igot_plt.get_got_type(i); + unsigned int got_symndx = igot_plt.get_got_symndx(i); + unsigned int got_input_index = igot_plt.get_got_input_index(i); + printf("[%d] type %02x, ", i, got_type & 0x7f); + if ((got_type & 0x7f) == 0x7f) + printf("reserved"); + else if (got_type & 0x80) + { + Entry_reader input_file = + incremental_inputs.input_file(got_input_index); + const char* objname = input_file.filename(); + printf("local: %s (%d)", objname, got_symndx); + } + else + { + sym_p = symtab_view.data() + got_symndx * sym_size; + elfcpp::Sym<size, big_endian> sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = "<unknown>"; + printf("global %s (%d)", symname, got_symndx); + } + printf("\n"); + } + + printf("\nPLT entries:\n"); + for (unsigned int i = 0; i < nplt; ++i) + { + unsigned int plt_desc = igot_plt.get_plt_desc(i); + printf("[%d] ", i); + sym_p = symtab_view.data() + plt_desc * sym_size; + elfcpp::Sym<size, big_endian> sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = "<unknown>"; + printf("%s (%d)\n", symname, plt_desc); + } + + 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 +main(int argc, char** argv) +{ + if (argc != 2) + { + fprintf(stderr, "Usage: %s <file>\n", argv[0]); + return 1; + } + const char* filename = argv[1]; + + Output_file* file = new Output_file(filename); + + bool t = file->open_base_file(NULL, false); + if (!t) + { + fprintf(stderr, "%s: open_base_file(%s): %s\n", argv[0], filename, + strerror(errno)); + return 1; + } + + Incremental_binary* inc = open_incremental_binary(file); + + if (inc == NULL) + { + fprintf(stderr, "%s: open_incremental_binary(%s): %s\n", argv[0], + filename, strerror(errno)); + return 1; + } + + switch (parameters->size_and_endianness()) + { +#ifdef HAVE_TARGET_32_LITTLE + case Parameters::TARGET_32_LITTLE: + dump_incremental_inputs<32, false>( + argv[0], filename, + static_cast<Sized_incremental_binary<32, false>*>(inc)); + break; +#endif +#ifdef HAVE_TARGET_32_BIG + case Parameters::TARGET_32_BIG: + dump_incremental_inputs<32, true>( + argv[0], filename, + static_cast<Sized_incremental_binary<32, true>*>(inc)); + break; +#endif +#ifdef HAVE_TARGET_64_LITTLE + case Parameters::TARGET_64_LITTLE: + dump_incremental_inputs<64, false>( + argv[0], filename, + static_cast<Sized_incremental_binary<64, false>*>(inc)); + break; +#endif +#ifdef HAVE_TARGET_64_BIG + case Parameters::TARGET_64_BIG: + dump_incremental_inputs<64, true>( + argv[0], filename, + static_cast<Sized_incremental_binary<64, true>*>(inc)); + break; +#endif + default: + gold_unreachable(); + } + + return 0; +} |