/* Generic BFD library interface and support routines.
- Copyright (C) 1990-2019 Free Software Foundation, Inc.
+ Copyright (C) 1990-2021 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
. {* A unique identifier of the BFD *}
. unsigned int id;
.
-. {* The format which belongs to the BFD. (object, core, etc.) *}
-. ENUM_BITFIELD (bfd_format) format : 3;
-.
-. {* The direction with which the BFD was opened. *}
-. ENUM_BITFIELD (bfd_direction) direction : 2;
-.
. {* Format_specific flags. *}
-. flagword flags : 20;
+. flagword flags;
.
. {* Values that may appear in the flags field of a BFD. These also
. appear in the object_flags field of the bfd_target structure, where
. {* Use the ELF STT_COMMON type in this BFD. *}
.#define BFD_USE_ELF_STT_COMMON 0x80000
.
+. {* Put pathnames into archives (non-POSIX). *}
+.#define BFD_ARCHIVE_FULL_PATH 0x100000
+.
. {* Flags bits to be saved in bfd_preserve_save. *}
.#define BFD_FLAGS_SAVED \
. (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
. | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \
. | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON)
.
+. {* The format which belongs to the BFD. (object, core, etc.) *}
+. ENUM_BITFIELD (bfd_format) format : 3;
+.
+. {* The direction with which the BFD was opened. *}
+. ENUM_BITFIELD (bfd_direction) direction : 2;
+.
. {* Is the file descriptor being cached? That is, can it be closed as
. needed, and re-opened when accessed later? *}
. unsigned int cacheable : 1;
. {* Set if this is a slim LTO object not loaded with a compiler plugin. *}
. unsigned int lto_slim_object : 1;
.
+. {* Do not attempt to modify this file. Set when detecting errors
+. that BFD is not prepared to handle for objcopy/strip. *}
+. unsigned int read_only : 1;
+.
. {* Set to dummy BFD created when claimed by a compiler plug-in
. library. *}
. bfd *plugin_dummy_bfd;
.
-. {* Currently my_archive is tested before adding origin to
-. anything. I believe that this can become always an add of
-. origin, with origin set to 0 for non archive files. *}
+. {* The offset of this bfd in the file, typically 0 if it is not
+. contained in an archive. *}
. ufile_ptr origin;
.
. {* The origin in the archive of the proxy entry. This will
.
. {* Symbol table for output BFD (with symcount entries).
. Also used by the linker to cache input BFD symbols. *}
-. struct bfd_symbol **outsymbols;
+. struct bfd_symbol **outsymbols;
.
. {* Used for input and output. *}
. unsigned int symcount;
. {* Pointer to structure which contains architecture information. *}
. const struct bfd_arch_info *arch_info;
.
+. {* Cached length of file for bfd_get_size. 0 until bfd_get_size is
+. called, 1 if stat returns an error or the file size is too large to
+. return in ufile_ptr. Both 0 and 1 should be treated as "unknown". *}
+. ufile_ptr size;
+.
. {* Stuff only useful for archives. *}
. void *arelt_data;
. struct bfd *my_archive; {* The containing archive BFD. *}
. const struct bfd_build_id *build_id;
.};
.
+.static inline const char *
+.bfd_get_filename (const bfd *abfd)
+.{
+. return abfd->filename;
+.}
+.
+.static inline bfd_boolean
+.bfd_get_cacheable (const bfd *abfd)
+.{
+. return abfd->cacheable;
+.}
+.
+.static inline enum bfd_format
+.bfd_get_format (const bfd *abfd)
+.{
+. return abfd->format;
+.}
+.
+.static inline flagword
+.bfd_get_file_flags (const bfd *abfd)
+.{
+. return abfd->flags;
+.}
+.
+.static inline bfd_vma
+.bfd_get_start_address (const bfd *abfd)
+.{
+. return abfd->start_address;
+.}
+.
+.static inline unsigned int
+.bfd_get_symcount (const bfd *abfd)
+.{
+. return abfd->symcount;
+.}
+.
+.static inline unsigned int
+.bfd_get_dynamic_symcount (const bfd *abfd)
+.{
+. return abfd->dynsymcount;
+.}
+.
+.static inline struct bfd_symbol **
+.bfd_get_outsymbols (const bfd *abfd)
+.{
+. return abfd->outsymbols;
+.}
+.
+.static inline unsigned int
+.bfd_count_sections (const bfd *abfd)
+.{
+. return abfd->section_count;
+.}
+.
+.static inline bfd_boolean
+.bfd_has_map (const bfd *abfd)
+.{
+. return abfd->has_armap;
+.}
+.
+.static inline bfd_boolean
+.bfd_is_thin_archive (const bfd *abfd)
+.{
+. return abfd->is_thin_archive;
+.}
+.
+.static inline void *
+.bfd_usrdata (const bfd *abfd)
+.{
+. return abfd->usrdata;
+.}
+.
.{* See note beside bfd_set_section_userdata. *}
.static inline bfd_boolean
.bfd_set_cacheable (bfd * abfd, bfd_boolean val)
. return TRUE;
.}
.
+.static inline void
+.bfd_set_thin_archive (bfd *abfd, bfd_boolean val)
+.{
+. abfd->is_thin_archive = val;
+.}
+.
+.static inline void
+.bfd_set_usrdata (bfd *abfd, void *val)
+.{
+. abfd->usrdata = val;
+.}
+.
+.static inline asection *
+.bfd_asymbol_section (const asymbol *sy)
+.{
+. return sy->section;
+.}
+.
+.static inline bfd_vma
+.bfd_asymbol_value (const asymbol *sy)
+.{
+. return sy->section->vma + sy->value;
+.}
+.
+.static inline const char *
+.bfd_asymbol_name (const asymbol *sy)
+.{
+. return sy->name;
+.}
+.
+.static inline struct bfd *
+.bfd_asymbol_bfd (const asymbol *sy)
+.{
+. return sy->the_bfd;
+.}
+.
+.static inline void
+.bfd_set_asymbol_name (asymbol *sy, const char *name)
+.{
+. sy->name = name;
+.}
+.
+.static inline bfd_size_type
+.bfd_get_section_limit_octets (const bfd *abfd, const asection *sec)
+.{
+. if (abfd->direction != write_direction && sec->rawsize != 0)
+. return sec->rawsize;
+. return sec->size;
+.}
+.
+.{* Find the address one past the end of SEC. *}
+.static inline bfd_size_type
+.bfd_get_section_limit (const bfd *abfd, const asection *sec)
+.{
+. return (bfd_get_section_limit_octets (abfd, sec)
+. / bfd_octets_per_byte (abfd, sec));
+.}
+.
+.{* Functions to handle insertion and deletion of a bfd's sections. These
+. only handle the list pointers, ie. do not adjust section_count,
+. target_index etc. *}
+.static inline void
+.bfd_section_list_remove (bfd *abfd, asection *s)
+.{
+. asection *next = s->next;
+. asection *prev = s->prev;
+. if (prev)
+. prev->next = next;
+. else
+. abfd->sections = next;
+. if (next)
+. next->prev = prev;
+. else
+. abfd->section_last = prev;
+.}
+.
+.static inline void
+.bfd_section_list_append (bfd *abfd, asection *s)
+.{
+. s->next = 0;
+. if (abfd->section_last)
+. {
+. s->prev = abfd->section_last;
+. abfd->section_last->next = s;
+. }
+. else
+. {
+. s->prev = 0;
+. abfd->sections = s;
+. }
+. abfd->section_last = s;
+.}
+.
+.static inline void
+.bfd_section_list_prepend (bfd *abfd, asection *s)
+.{
+. s->prev = 0;
+. if (abfd->sections)
+. {
+. s->next = abfd->sections;
+. abfd->sections->prev = s;
+. }
+. else
+. {
+. s->next = 0;
+. abfd->section_last = s;
+. }
+. abfd->sections = s;
+.}
+.
+.static inline void
+.bfd_section_list_insert_after (bfd *abfd, asection *a, asection *s)
+.{
+. asection *next = a->next;
+. s->next = next;
+. s->prev = a;
+. a->next = s;
+. if (next)
+. next->prev = s;
+. else
+. abfd->section_last = s;
+.}
+.
+.static inline void
+.bfd_section_list_insert_before (bfd *abfd, asection *b, asection *s)
+.{
+. asection *prev = b->prev;
+. s->prev = prev;
+. s->next = b;
+. b->prev = s;
+. if (prev)
+. prev->next = s;
+. else
+. abfd->sections = s;
+.}
+.
+.static inline bfd_boolean
+.bfd_section_removed_from_list (const bfd *abfd, const asection *s)
+.{
+. return s->next ? s->next->prev != s : abfd->section_last != s;
+.}
+.
*/
#include "sysdep.h"
. bfd_error_bad_value,
. bfd_error_file_truncated,
. bfd_error_file_too_big,
+. bfd_error_sorry,
. bfd_error_on_input,
. bfd_error_invalid_error_code
.}
N_("bad value"),
N_("file truncated"),
N_("file too big"),
+ N_("sorry, cannot handle this file"),
N_("error reading %s: %s"),
N_("#<invalid error code>")
};
char *buf;
const char *msg = bfd_errmsg (input_error);
- if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg)
- != -1)
+ if (asprintf (&buf, _(bfd_errmsgs [error_tag]),
+ bfd_get_filename (input_bfd), msg) != -1)
return buf;
/* Ick, what to do on out of memory? */
else if (abfd->my_archive
&& !bfd_is_thin_archive (abfd->my_archive))
result = fprintf (stream, "%s(%s)",
- abfd->my_archive->filename,
- abfd->filename);
+ bfd_get_filename (abfd->my_archive),
+ bfd_get_filename (abfd));
else
- result = fprintf (stream, "%s", abfd->filename);
+ result = fprintf (stream, "%s", bfd_get_filename (abfd));
}
else
PRINT_TYPE (void *, p);
. BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
.
.#define bfd_stat_arch_elt(abfd, stat) \
-. BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
+. BFD_SEND (abfd->my_archive ? abfd->my_archive : abfd, \
+. _bfd_stat_arch_elt, (abfd, stat))
.
.#define bfd_update_armap_timestamp(abfd) \
. BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
bfd_boolean flags_valid,
flagword flags,
bfd_boolean at_valid,
- bfd_vma at,
+ bfd_vma at, /* Bytes. */
bfd_boolean includes_filehdr,
bfd_boolean includes_phdrs,
unsigned int count,
asection **secs)
{
struct elf_segment_map *m, **pm;
- bfd_size_type amt;
+ size_t amt;
+ unsigned int opb = bfd_octets_per_byte (abfd, NULL);
if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
return TRUE;
m->p_type = type;
m->p_flags = flags;
- m->p_paddr = at;
+ m->p_paddr = at * opb;
m->p_flags_valid = flags_valid;
m->p_paddr_valid = at_valid;
m->includes_filehdr = includes_filehdr;
return 0;
}
-static void
-bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size,
- int offset, const bfd_target *orig_target)
-{
- if (target->flavour == bfd_target_elf_flavour)
- {
- const struct elf_backend_data *bed;
-
- bed = xvec_get_elf_backend_data (target);
- *((bfd_vma *) ((char *) bed + offset)) = size;
- }
-
- if (target->alternative_target
- && target->alternative_target != orig_target)
- bfd_elf_set_pagesize (target->alternative_target, size, offset,
- orig_target);
-}
-
-/*
-FUNCTION
- bfd_emul_set_maxpagesize
-
-SYNOPSIS
- void bfd_emul_set_maxpagesize (const char *, bfd_vma);
-
-DESCRIPTION
- For ELF, set the maximum page size for the emulation. It is
- a no-op for other formats.
-
-*/
-
-void
-bfd_emul_set_maxpagesize (const char *emul, bfd_vma size)
-{
- const bfd_target *target;
-
- target = bfd_find_target (emul, NULL);
- if (target)
- bfd_elf_set_pagesize (target, size,
- offsetof (struct elf_backend_data,
- maxpagesize), target);
-}
-
/*
FUNCTION
bfd_emul_get_commonpagesize
return 0;
}
-/*
-FUNCTION
- bfd_emul_set_commonpagesize
-
-SYNOPSIS
- void bfd_emul_set_commonpagesize (const char *, bfd_vma);
-
-DESCRIPTION
- For ELF, set the common page size for the emulation. It is
- a no-op for other formats.
-
-*/
-
-void
-bfd_emul_set_commonpagesize (const char *emul, bfd_vma size)
-{
- const bfd_target *target;
-
- target = bfd_find_target (emul, NULL);
- if (target)
- bfd_elf_set_pagesize (target, size,
- offsetof (struct elf_backend_data,
- commonpagesize), target);
-}
-
/*
FUNCTION
bfd_demangle
res = cplus_demangle (name, options);
- if (alloc != NULL)
- free (alloc);
+ free (alloc);
if (res == NULL)
{
bfd_update_compression_header (bfd *abfd, bfd_byte *contents,
asection *sec)
{
- if ((abfd->flags & BFD_COMPRESS) != 0)
+ if ((abfd->flags & BFD_COMPRESS) == 0)
+ abort ();
+
+ switch (bfd_get_flavour (abfd))
{
- if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ case bfd_target_elf_flavour:
+ if ((abfd->flags & BFD_COMPRESS_GABI) != 0)
{
- if ((abfd->flags & BFD_COMPRESS_GABI) != 0)
- {
- const struct elf_backend_data *bed
- = get_elf_backend_data (abfd);
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ struct bfd_elf_section_data * esd = elf_section_data (sec);
- /* Set the SHF_COMPRESSED bit. */
- elf_section_flags (sec) |= SHF_COMPRESSED;
+ /* Set the SHF_COMPRESSED bit. */
+ elf_section_flags (sec) |= SHF_COMPRESSED;
- if (bed->s->elfclass == ELFCLASS32)
- {
- Elf32_External_Chdr *echdr
- = (Elf32_External_Chdr *) contents;
- bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
- bfd_put_32 (abfd, sec->size, &echdr->ch_size);
- bfd_put_32 (abfd, 1 << sec->alignment_power,
- &echdr->ch_addralign);
- /* bfd_log2 (alignof (Elf32_Chdr)) */
- bfd_set_section_alignment (abfd, sec, 2);
- }
- else
- {
- Elf64_External_Chdr *echdr
- = (Elf64_External_Chdr *) contents;
- bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
- bfd_put_32 (abfd, 0, &echdr->ch_reserved);
- bfd_put_64 (abfd, sec->size, &echdr->ch_size);
- bfd_put_64 (abfd, 1 << sec->alignment_power,
- &echdr->ch_addralign);
- /* bfd_log2 (alignof (Elf64_Chdr)) */
- bfd_set_section_alignment (abfd, sec, 3);
- }
+ if (bed->s->elfclass == ELFCLASS32)
+ {
+ Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
+ bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
+ bfd_put_32 (abfd, sec->size, &echdr->ch_size);
+ bfd_put_32 (abfd, 1 << sec->alignment_power,
+ &echdr->ch_addralign);
+ /* bfd_log2 (alignof (Elf32_Chdr)) */
+ bfd_set_section_alignment (sec, 2);
+ esd->this_hdr.sh_addralign = 4;
}
else
{
- /* Clear the SHF_COMPRESSED bit. */
- elf_section_flags (sec) &= ~SHF_COMPRESSED;
-
- /* Write the zlib header. It should be "ZLIB" followed by
- the uncompressed section size, 8 bytes in big-endian
- order. */
- memcpy (contents, "ZLIB", 4);
- bfd_putb64 (sec->size, contents + 4);
- /* No way to keep the original alignment, just use 1 always. */
- bfd_set_section_alignment (abfd, sec, 0);
+ Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
+ bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
+ bfd_put_32 (abfd, 0, &echdr->ch_reserved);
+ bfd_put_64 (abfd, sec->size, &echdr->ch_size);
+ bfd_put_64 (abfd, 1 << sec->alignment_power,
+ &echdr->ch_addralign);
+ /* bfd_log2 (alignof (Elf64_Chdr)) */
+ bfd_set_section_alignment (sec, 3);
+ esd->this_hdr.sh_addralign = 8;
}
+ break;
}
+
+ /* Clear the SHF_COMPRESSED bit. */
+ elf_section_flags (sec) &= ~SHF_COMPRESSED;
+ /* Fall through. */
+
+ default:
+ /* Write the zlib header. It should be "ZLIB" followed by
+ the uncompressed section size, 8 bytes in big-endian
+ order. */
+ memcpy (contents, "ZLIB", 4);
+ bfd_putb64 (sec->size, contents + 4);
+ /* No way to keep the original alignment, just use 1 always. */
+ bfd_set_section_alignment (sec, 0);
+ break;
}
- else
- abort ();
}
/*
chdr.ch_addralign = bfd_get_64 (abfd, &echdr->ch_addralign);
}
if (chdr.ch_type == ELFCOMPRESS_ZLIB
- && chdr.ch_addralign == (1U << bfd_log2 (chdr.ch_addralign)))
+ && chdr.ch_addralign == (chdr.ch_addralign & -chdr.ch_addralign))
{
*uncompressed_size = chdr.ch_size;
*uncompressed_alignment_power = bfd_log2 (chdr.ch_addralign);
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return TRUE;
- /* Do nothing if ELF classes of input and output are the same. */
+ /* Do nothing if ELF classes of input and output are the same. */
if (get_elf_backend_data (ibfd)->s->elfclass
== get_elf_backend_data (obfd)->s->elfclass)
return TRUE;
if ((ibfd->flags & BFD_DECOMPRESS))
return TRUE;
- /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
+ /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
ihdr_size = bfd_get_compression_header_size (ibfd, isec);
if (ihdr_size == 0)
return TRUE;
+ /* PR 25221. Check for corrupt input sections. */
+ if (ihdr_size > bfd_get_section_limit (ibfd, isec))
+ /* FIXME: Issue a warning about a corrupt
+ compression header size field ? */
+ return FALSE;
+
contents = *ptr;
/* Convert the contents of the input SHF_COMPRESSED section to
use_memmove = FALSE;
}
+ else if (ihdr_size != sizeof (Elf64_External_Chdr))
+ {
+ /* FIXME: Issue a warning about a corrupt
+ compression header size field ? */
+ return FALSE;
+ }
else
{
Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
use_memmove = TRUE;
}
- size = bfd_get_section_size (isec) - ihdr_size + ohdr_size;
+ size = bfd_section_size (isec) - ihdr_size + ohdr_size;
if (!use_memmove)
{
contents = (bfd_byte *) bfd_malloc (size);
projects / thirdparty / binutils-gdb.git / blobdiff