X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;ds=sidebyside;f=gold%2Fincremental-dump.cc;h=1b561ae9680ffd62fdf7efd61010e17aaf254129;hb=0c0adcc52478ebb707ed780173e18262df6eab7e;hp=daaee8a994bd7bab102d4065c5e5c655253eb5f5;hpb=954c3e2ed11aef28b763804473b949320c83db7d;p=deliverable%2Fbinutils-gdb.git diff --git a/gold/incremental-dump.cc b/gold/incremental-dump.cc index daaee8a994..1b561ae968 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 (C) 2009-2020 Free Software Foundation, Inc. // Written by Rafael Avila de Espindola // This file is part of gold. @@ -32,6 +32,7 @@ #include #include +#include #include "incremental.h" @@ -42,137 +43,475 @@ namespace gold using namespace gold; -int -main(int argc, char** argv) +template +static typename Incremental_inputs_reader:: + Incremental_input_entry_reader +find_input_containing_global( + Incremental_inputs_reader& incremental_inputs, + unsigned int offset, + unsigned int* symndx) { - if (argc != 2) + typedef Incremental_inputs_reader Inputs_reader; + static const unsigned int global_sym_entry_size = + Incremental_inputs_reader::global_sym_entry_size; + + for (unsigned int i = 0; i < incremental_inputs.input_file_count(); ++i) { - fprintf(stderr, "Usage: %s \n", argv[0]); - return 1; + 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; + } } - const char* filename = argv[1]; + gold_unreachable(); +} - Output_file* file = new Output_file(filename); +template +static void +dump_incremental_inputs(const char* argv0, const char* filename, + Sized_incremental_binary* inc) +{ + typedef Incremental_binary::Location Location; + typedef Incremental_binary::View View; + typedef Incremental_inputs_reader Inputs_reader; + typedef typename Inputs_reader::Incremental_input_entry_reader Entry_reader; - bool t = file->open_for_modification(); - if (!t) + if (!inc->has_incremental_info()) { - fprintf(stderr, "%s: open_for_modification(%s): %s\n", argv[0], filename, - strerror(errno)); - return 1; + fprintf(stderr, "%s: %s: no .gnu_incremental_inputs section\n", argv0, + filename); + exit(1); } - Incremental_binary* inc = open_incremental_binary(file); + // Create a reader object for the .gnu_incremental_inputs section. - if (inc == NULL) + Incremental_inputs_reader + incremental_inputs(inc->inputs_reader()); + + if (incremental_inputs.version() != 2) { - fprintf(stderr, "%s: open_incremental_binary(%s): %s\n", argv[0], - filename, strerror(errno)); - return 1; + fprintf(stderr, "%s: %s: unknown incremental version %d\n", argv0, + filename, incremental_inputs.version()); + exit(1); } - unsigned int strtab_shndx; - Incremental_binary::Location location; + 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); - t = inc->find_incremental_inputs_section(&location, &strtab_shndx); - if (!t) + printf("\nInput files:\n"); + for (unsigned int i = 0; i < incremental_inputs.input_file_count(); ++i) { - fprintf(stderr, "%s: %s: no .gnu_incremental_inputs section\n", argv[0], - filename); - return 1; + 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(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); + } } - Incremental_binary::View inputs_view(inc->view(location)); - const unsigned char *p = inputs_view.data(); + 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(info.sh_offset), + static_cast(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)); + } - const Incremental_inputs_header_data* incremental_header = - reinterpret_cast (p); + // Get a view of the .symtab section. - const Incremental_inputs_entry_data* incremental_inputs = - reinterpret_cast - (p + sizeof(Incremental_inputs_header_data)); + elfcpp::Elf_file elf_file(inc); - if (incremental_header->version != 1) + 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: unknown incremental version %d\n", argv[0], - filename, incremental_header->version); - return 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)); - elfcpp::Elf_file<64, false, Incremental_binary> elf_file(inc); + // Get a view of the .strtab section. - if (elf_file.section_type(strtab_shndx) != elfcpp::SHT_STRTAB) + 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: invalid string table section %u (type %d != %d)\n", - argv[0], filename, strtab_shndx, - elf_file.section_type(strtab_shndx), elfcpp::SHT_STRTAB); - return 1; + 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 isymtab(inc->symtab_reader()); + Incremental_relocs_reader irelocs(inc->relocs_reader()); + unsigned int sym_size = elfcpp::Elf_sizes::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 sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = ""; + 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 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 sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = ""; + 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); + } + } } - Incremental_binary::Location - strtab_location(elf_file.section_contents(strtab_shndx)); + sym_p = symtab_view.data() + first_global * sym_size; + printf("\nGlobal symbol table:\n"); + for (unsigned int i = 0; i < nglobals; i++) + { + elfcpp::Sym sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = ""; + 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(incremental_inputs, + offset, &sym_ndx); + Incremental_global_symbol_reader 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(irelocs.get_r_offset(r_off)), + static_cast(irelocs.get_r_addend(r_off)), + symname); + r_off += irelocs.reloc_size; + } + offset = sym_info.next_offset(); + } + sym_p += sym_size; + } - Incremental_binary::View strtab_view(inc->view(strtab_location)); - p = strtab_view.data(); + Incremental_got_plt_reader 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 sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = ""; + printf("global %s (%d)", symname, got_symndx); + } + printf("\n"); + } - elfcpp::Elf_strtab strtab(strtab_view.data(), strtab_location.data_size); - const char* command_line; - t = strtab.get_c_string(incremental_header->command_line_offset, - &command_line); + 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 sym(sym_p); + const char* symname; + if (!strtab.get_c_string(sym.get_st_name(), &symname)) + symname = ""; + 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 \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: %s: failed to get link command line: %zu out of range\n", - argv[0], filename, - static_cast(incremental_header->command_line_offset)); + fprintf(stderr, "%s: open_base_file(%s): %s\n", argv[0], filename, + strerror(errno)); return 1; } - printf("Link command line: %s\n", command_line); + Incremental_binary* inc = open_incremental_binary(file); - printf("Input files:\n"); - for (unsigned i = 0; i < incremental_header->input_file_count; ++i) + if (inc == NULL) { - const Incremental_inputs_entry_data* input = - &incremental_inputs[i]; - const char *objname; + fprintf(stderr, "%s: open_incremental_binary(%s): %s\n", argv[0], + filename, strerror(errno)); + return 1; + } - t = strtab.get_c_string(input->filename_offset, &objname); - if (!t) - { - fprintf(stderr,"%s: %s: failed to get file name for object %u:" - " %zu out of range\n", argv[0], filename, i, - static_cast(input->filename_offset)); - return 1; - } - printf(" %s\n", objname); - printf(" Timestamp sec = %llu\n", - static_cast(input->timestamp_sec)); - printf(" Timestamp nsec = %d\n", input->timestamp_nsec); - printf(" Type = "); - // TODO: print the data at input->data_offset once we have it. - switch (input->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"); - break; - case INCREMENTAL_INPUT_INVALID: - default: - fprintf(stderr, "%s: invalid file type for object %u: %d\n", - argv[0], i, input->input_type); - 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*>(inc)); + break; +#endif +#ifdef HAVE_TARGET_32_BIG + case Parameters::TARGET_32_BIG: + dump_incremental_inputs<32, true>( + argv[0], filename, + static_cast*>(inc)); + break; +#endif +#ifdef HAVE_TARGET_64_LITTLE + case Parameters::TARGET_64_LITTLE: + dump_incremental_inputs<64, false>( + argv[0], filename, + static_cast*>(inc)); + break; +#endif +#ifdef HAVE_TARGET_64_BIG + case Parameters::TARGET_64_BIG: + dump_incremental_inputs<64, true>( + argv[0], filename, + static_cast*>(inc)); + break; +#endif + default: + gold_unreachable(); } return 0;