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Preserve a few more bfd fields in check_format_matches

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AOUT and COFF targets set symcount and start_address in their object_p
functions.  If these are used anywhere then it would pay to save and
restore them so that a successful match gets the values expected
rather than that for a later unsuccessful target match.

	* format.c (struct bfd_preserve): Move some fields.  Add
	symcount, read_only and start_address.
	(bfd_preserve_save): Save..
	(bfd_preserve_restore): ..and restore..
	(bfd_reinit): ..and zero new fields.
This commit is contained in:
Alan Modra
2023-04-13 15:03:16 +09:30
parent 5d1fefd3b3
commit 24a6c5ae36
1 changed files with 14 additions and 2 deletions
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16
bfd/format.c
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@@ -102,13 +102,16 @@ struct bfd_preserve
const struct bfd_iovec *iovec;
void *iostream;
const struct bfd_arch_info *arch_info;
const struct bfd_build_id *build_id;
bfd_cleanup cleanup;
struct bfd_section *sections;
struct bfd_section *section_last;
unsigned int section_count;
unsigned int section_id;
unsigned int symcount;
bool read_only;
bfd_vma start_address;
struct bfd_hash_table section_htab;
const struct bfd_build_id *build_id;
bfd_cleanup cleanup;
};
/* When testing an object for compatibility with a particular target
@@ -133,6 +136,9 @@ bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve,
preserve->section_last = abfd->section_last;
preserve->section_count = abfd->section_count;
preserve->section_id = _bfd_section_id;
preserve->symcount = abfd->symcount;
preserve->read_only = abfd->read_only;
preserve->start_address = abfd->start_address;
preserve->section_htab = abfd->section_htab;
preserve->marker = bfd_alloc (abfd, 1);
preserve->build_id = abfd->build_id;
@@ -183,6 +189,9 @@ bfd_reinit (bfd *abfd, unsigned int section_id,
abfd->tdata.any = NULL;
abfd->arch_info = &bfd_default_arch_struct;
io_reinit (abfd, preserve);
abfd->symcount = 0;
abfd->read_only = 0;
abfd->start_address = 0;
abfd->build_id = NULL;
bfd_section_list_clear (abfd);
}
@@ -202,6 +211,9 @@ bfd_preserve_restore (bfd *abfd, struct bfd_preserve *preserve)
abfd->section_last = preserve->section_last;
abfd->section_count = preserve->section_count;
_bfd_section_id = preserve->section_id;
abfd->symcount = preserve->symcount;
abfd->read_only = preserve->read_only;
abfd->start_address = preserve->start_address;
abfd->build_id = preserve->build_id;
/* bfd_release frees all memory more recently bfd_alloc'd than