-// 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 <rafael.espindola@gmail.com>
// This file is part of gold.
#include <stdio.h>
#include <errno.h>
+#include <time.h>
#include "incremental.h"
using namespace gold;
-int
-main(int argc, char** argv)
+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)
{
- if (argc != 2)
+ 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)
{
- fprintf(stderr, "Usage: %s <file>\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<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;
- 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<size, big_endian>
+ 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<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);
+ }
}
- 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<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));
+ }
- const Incremental_inputs_header_data* incremental_header =
- reinterpret_cast<const Incremental_inputs_header_data*> (p);
+ // Get a view of the .symtab section.
- const Incremental_inputs_entry_data* incremental_inputs =
- reinterpret_cast<const Incremental_inputs_entry_data*>
- (p + sizeof(Incremental_inputs_header_data));
+ elfcpp::Elf_file<size, big_endian, Incremental_binary> 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<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);
+ }
+ }
}
- 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<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_binary::View strtab_view(inc->view(strtab_location));
- p = strtab_view.data();
+ 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");
+ }
- 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<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: %s: failed to get link command line: %zu out of range\n",
- argv[0], filename,
- static_cast<size_t>(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<size_t>(input->filename_offset));
- return 1;
- }
- printf(" %s\n", objname);
- printf(" Timestamp sec = %llu\n",
- static_cast<unsigned long long>(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<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;
projects / deliverable / binutils-gdb.git / blobdiff