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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gold/] [incremental-dump.cc] - Rev 292
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// 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; 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)) / 20; 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() != 1) { 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; }
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