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Add ability to follow dwo links to readelf/objdump.

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* dwarf.c (dwo_name, dwo_dir, dwo_id, dwo_id_len): New variables.
	(read_and_display_attr_value): Record dwo variables if requested.
	(display_augmentation_data): Rename to display_data and make
	generic.
	(load_dwo_file): New function.  Loads a separate dwarf object
	file.
	(load_separate_debug_file): Add reporting and loading of separate
	dwarf objet files.
	* readelf.c (process_section_headers): Add do_debug_links to list
	of flags requiring a debug dump.
	(display_debug_section): Tidy up code.
	* doc/debug.options.texi: Add note that dwo links will also be
	followed.
	* testsuite/binutils-all/debuglink.s: Tidy code.
	* testsuite/binutils-all/dwo.s: New test file.
	* testsuite/binutils-all/readelf.wk2: New file - expected output
	from readelf.
	* testsuite/binutils-all/readelf.exp: Run the new test.
This commit is contained in:
Nick Clifton 2017-11-21 13:12:04 +00:00
parent 0fc7642151
commit d85bf2ba86
8 changed files with 399 additions and 140 deletions
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59
binutils/readelf.c
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@ -6084,7 +6084,7 @@ process_section_headers (Filedata * filedata)
|| do_debug_lines || do_debug_pubnames || do_debug_pubtypes
|| do_debug_aranges || do_debug_frames || do_debug_macinfo
|| do_debug_str || do_debug_loc || do_debug_ranges
|| do_debug_addr || do_debug_cu_index)
|| do_debug_addr || do_debug_cu_index || do_debug_links)
&& (const_strneq (name, ".debug_")
|| const_strneq (name, ".zdebug_")))
{
@ -13658,40 +13658,43 @@ display_debug_section (int shndx, Elf_Internal_Shdr * section, Filedata * fileda
/* See if we know how to display the contents of this section. */
for (i = 0; i < max; i++)
if (streq (debug_displays[i].section.uncompressed_name, name)
|| (i == line && const_strneq (name, ".debug_line."))
|| streq (debug_displays[i].section.compressed_name, name))
{
struct dwarf_section * sec = &debug_displays [i].section;
int secondary = (section != find_section (filedata, name));
{
enum dwarf_section_display_enum id = (enum dwarf_section_display_enum) i;
struct dwarf_section_display * display = debug_displays + i;
struct dwarf_section * sec = & display->section;
if (secondary)
free_debug_section ((enum dwarf_section_display_enum) i);
if (streq (sec->uncompressed_name, name)
|| (id == line && const_strneq (name, ".debug_line."))
|| streq (sec->compressed_name, name))
{
bfd_boolean secondary = (section != find_section (filedata, name));
if (i == line && const_strneq (name, ".debug_line."))
sec->name = name;
else if (streq (sec->uncompressed_name, name))
sec->name = sec->uncompressed_name;
else
sec->name = sec->compressed_name;
if (secondary)
free_debug_section (id);
if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
section, filedata))
{
/* If this debug section is part of a CU/TU set in a .dwp file,
restrict load_debug_section to the sections in that set. */
section_subset = find_cu_tu_set (filedata, shndx);
if (i == line && const_strneq (name, ".debug_line."))
sec->name = name;
else if (streq (sec->uncompressed_name, name))
sec->name = sec->uncompressed_name;
else
sec->name = sec->compressed_name;
result &= debug_displays[i].display (sec, filedata);
if (load_specific_debug_section (id, section, filedata))
{
/* If this debug section is part of a CU/TU set in a .dwp file,
restrict load_debug_section to the sections in that set. */
section_subset = find_cu_tu_set (filedata, shndx);
section_subset = NULL;
result &= display->display (sec, filedata);
if (secondary || (i != info && i != abbrev))
free_debug_section ((enum dwarf_section_display_enum) i);
}
section_subset = NULL;
break;
}
if (secondary || (id != info && id != abbrev))
free_debug_section (id);
}
break;
}
}
if (i == max)
{