From fd86991bc5f1d0ff256b396fbb41f0125ed00c17 Mon Sep 17 00:00:00 2001 From: Nick Alcock Date: Sat, 3 Aug 2019 00:41:05 +0100 Subject: [PATCH] objdump: get CTF parent importing right The linker emits CTF into a single section named .ctf, which is a CTF archive where the default member (itself named ".ctf", or simply NULL) is the parent of all other members. Teach objdump to look for this by default, rather than only trying to do it if a specific CTF parent section was specified. (If no parent name is specified, we get the .ctf member from the same section as everything else, which matches what the linker generates.) binutils/ * objdump.c (dump_ctf): Use the default CTF archive member as the parent even when no parent section is specified. (dump_ctf_archive_member): Only import from the parent if this is not the default ".ctf" member. --- binutils/ChangeLog | 7 +++++++ binutils/doc/ctf.options.texi | 5 +++-- binutils/objdump.c | 35 +++++++++++++++++++++++------------ 3 files changed, 33 insertions(+), 14 deletions(-) diff --git a/binutils/ChangeLog b/binutils/ChangeLog index 3fba18e5cee..50eeb5cf4d0 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,3 +1,10 @@ +2019-08-03 Nick Alcock + + * objdump.c (dump_ctf): Use the default CTF archive member as the + parent even when no parent section is specified. + (dump_ctf_archive_member): Only import from the parent + if this is not the default ".ctf" member. + 2019-09-23 Nick Alcock * Makefile.am (LIBCTF): Mention the .la file. diff --git a/binutils/doc/ctf.options.texi b/binutils/doc/ctf.options.texi index cf0528044a5..bb9946a8008 100644 --- a/binutils/doc/ctf.options.texi +++ b/binutils/doc/ctf.options.texi @@ -10,5 +10,6 @@ contain many subsections, all of which are displayed in order. @item --ctf-parent=@var{section} -Specify the name of another section from which the CTF file can inherit -types. +Specify the name of another section from which the CTF dictionary can inherit +types. (If none is specified, we assume the CTF dictionary inherits types +from the default-named member of the archive contained within this section.) diff --git a/binutils/objdump.c b/binutils/objdump.c index d5a45ae5cb9..ae50d871082 100644 --- a/binutils/objdump.c +++ b/binutils/objdump.c @@ -3290,11 +3290,18 @@ dump_ctf_archive_member (ctf_file_t *ctf, const char *name, void *arg) /* Only print out the name of non-default-named archive members. The name .ctf appears everywhere, even for things that aren't - really archives, so printing it out is liable to be confusing. */ + really archives, so printing it out is liable to be confusing. + + The parent, if there is one, is the default-owned archive member: + avoid importing it into itself. (This does no harm, but looks + confusing.) */ + if (strcmp (name, ".ctf") != 0) - printf (_("\nCTF archive member: %s:\n"), sanitize_string (name)); + { + printf (_("\nCTF archive member: %s:\n"), sanitize_string (name)); + ctf_import (ctf, parent); + } - ctf_import (ctf, parent); for (i = 0, thing = things; *thing[0]; thing++, i++) { ctf_dump_state_t *s = NULL; @@ -3323,7 +3330,7 @@ dump_ctf_archive_member (ctf_file_t *ctf, const char *name, void *arg) static void dump_ctf (bfd *abfd, const char *sect_name, const char *parent_name) { - ctf_archive_t *ctfa, *parenta = NULL; + ctf_archive_t *ctfa, *parenta = NULL, *lookparent; bfd_byte *ctfdata, *parentdata = NULL; bfd_size_type ctfsize, parentsize; ctf_sect_t ctfsect; @@ -3356,14 +3363,18 @@ dump_ctf (bfd *abfd, const char *sect_name, const char *parent_name) bfd_fatal (bfd_get_filename (abfd)); } - /* Assume that the applicable parent archive member is the default one. - (This is what all known implementations are expected to do, if they - put CTFs and their parents in archives together.) */ - if ((parent = ctf_arc_open_by_name (parenta, NULL, &err)) == NULL) - { - non_fatal (_("CTF open failure: %s\n"), ctf_errmsg (err)); - bfd_fatal (bfd_get_filename (abfd)); - } + lookparent = parenta; + } + else + lookparent = ctfa; + + /* Assume that the applicable parent archive member is the default one. + (This is what all known implementations are expected to do, if they + put CTFs and their parents in archives together.) */ + if ((parent = ctf_arc_open_by_name (lookparent, NULL, &err)) == NULL) + { + non_fatal (_("CTF open failure: %s\n"), ctf_errmsg (err)); + bfd_fatal (bfd_get_filename (abfd)); } printf (_("Contents of CTF section %s:\n"), sanitize_string (sect_name)); -- 2.30.2