&& (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3));
}
+struct bfd_preserve
+{
+ const struct bfd_arch_info *arch_info;
+ struct elf_obj_tdata *tdata;
+ struct bfd_hash_table section_htab;
+ struct sec *sections;
+ struct sec **section_tail;
+ unsigned int section_count;
+};
+
/* Check to see if the file associated with ABFD matches the target vector
that ABFD points to.
Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
Elf_External_Shdr x_shdr; /* Section header table entry, external form */
Elf_Internal_Shdr i_shdr;
- Elf_Internal_Shdr *i_shdrp = NULL; /* Section header table, internal form */
+ Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */
unsigned int shindex;
char *shstrtab; /* Internal copy of section header stringtab */
struct elf_backend_data *ebd;
- struct elf_obj_tdata *preserved_tdata = elf_tdata (abfd);
- struct sec *preserved_sections = abfd->sections;
- unsigned int preserved_section_count = abfd->section_count;
- enum bfd_architecture previous_arch = bfd_get_arch (abfd);
- unsigned long previous_mach = bfd_get_mach (abfd);
+ struct bfd_preserve preserve;
struct elf_obj_tdata *new_tdata = NULL;
asection *s;
bfd_size_type amt;
- /* Clear section information, since there might be a recognized bfd that
- we now check if we can replace, and we don't want to append to it. */
- abfd->sections = NULL;
- abfd->section_count = 0;
+ preserve.arch_info = abfd->arch_info;
/* Read in the ELF header in external format. */
new_tdata = (struct elf_obj_tdata *) bfd_zalloc (abfd, amt);
if (new_tdata == NULL)
goto got_no_match;
+ preserve.tdata = elf_tdata (abfd);
elf_tdata (abfd) = new_tdata;
+ /* Clear section information, since there might be a recognized bfd that
+ we now check if we can replace, and we don't want to append to it. */
+ preserve.sections = abfd->sections;
+ preserve.section_tail = abfd->section_tail;
+ preserve.section_count = abfd->section_count;
+ preserve.section_htab = abfd->section_htab;
+ abfd->sections = NULL;
+ abfd->section_tail = &abfd->sections;
+ abfd->section_count = 0;
+ if (!bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc))
+ goto got_no_match;
+
/* Now that we know the byte order, swap in the rest of the header */
i_ehdrp = elf_elfheader (abfd);
elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
}
for ( ; shindex < num_sec; shindex++)
elf_elfsections (abfd)[shindex] = shdrp++;
- }
- /* Read in the rest of the section header table and convert it to
- internal form. */
- for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++)
- {
- if (bfd_bread ((PTR) & x_shdr, (bfd_size_type) sizeof x_shdr, abfd)
- != sizeof (x_shdr))
- goto got_no_match;
- elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
-
- /* If the section is loaded, but not page aligned, clear
- D_PAGED. */
- if (i_shdrp[shindex].sh_size != 0
- && (i_shdrp[shindex].sh_flags & SHF_ALLOC) != 0
- && i_shdrp[shindex].sh_type != SHT_NOBITS
- && (((i_shdrp[shindex].sh_addr - i_shdrp[shindex].sh_offset)
- % ebd->maxpagesize)
- != 0))
- abfd->flags &= ~D_PAGED;
+ /* Read in the rest of the section header table and convert it
+ to internal form. */
+ for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++)
+ {
+ if (bfd_bread ((PTR) & x_shdr, (bfd_size_type) sizeof x_shdr, abfd)
+ != sizeof (x_shdr))
+ goto got_no_match;
+ elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
+
+ /* If the section is loaded, but not page aligned, clear
+ D_PAGED. */
+ if (i_shdrp[shindex].sh_size != 0
+ && (i_shdrp[shindex].sh_flags & SHF_ALLOC) != 0
+ && i_shdrp[shindex].sh_type != SHT_NOBITS
+ && (((i_shdrp[shindex].sh_addr - i_shdrp[shindex].sh_offset)
+ % ebd->maxpagesize)
+ != 0))
+ abfd->flags &= ~D_PAGED;
+ }
}
+
if (i_ehdrp->e_shstrndx)
{
if (! bfd_section_from_shdr (abfd, i_ehdrp->e_shstrndx))
}
}
+ /* It would be nice to be able to free more memory here, eg. old
+ elf_elfsections, old tdata, but that's not possible since these
+ blocks are sitting inside obj_alloc'd memory. */
+ bfd_hash_table_free (&preserve.section_htab);
return (abfd->xvec);
got_wrong_format_error:
target-specific elf_backend_object_p function. Note that saving the
whole bfd here and restoring it would be even worse; the first thing
you notice is that the cached bfd file position gets out of sync. */
- bfd_default_set_arch_mach (abfd, previous_arch, previous_mach);
bfd_set_error (bfd_error_wrong_format);
+
got_no_match:
+ abfd->arch_info = preserve.arch_info;
if (new_tdata != NULL)
- bfd_release (abfd, new_tdata);
- elf_tdata (abfd) = preserved_tdata;
- abfd->sections = preserved_sections;
- abfd->section_count = preserved_section_count;
- return (NULL);
+ {
+ /* bfd_release frees all memory more recently bfd_alloc'd than
+ its arg, as well as its arg. */
+ bfd_release (abfd, new_tdata);
+ elf_tdata (abfd) = preserve.tdata;
+ abfd->section_htab = preserve.section_htab;
+ abfd->sections = preserve.sections;
+ abfd->section_tail = preserve.section_tail;
+ abfd->section_count = preserve.section_count;
+ }
+ return NULL;
}
\f
/* ELF .o/exec file writing */
{
Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
- Elf_Internal_Phdr *i_phdrp = NULL; /* Elf program header, internal form */
+ Elf_Internal_Phdr *i_phdrp; /* Elf program header, internal form */
unsigned int phindex;
struct elf_backend_data *ebd;
- struct elf_obj_tdata *preserved_tdata = elf_tdata (abfd);
- struct sec *preserved_sections = abfd->sections;
- unsigned int preserved_section_count = abfd->section_count;
- enum bfd_architecture previous_arch = bfd_get_arch (abfd);
- unsigned long previous_mach = bfd_get_mach (abfd);
+ struct bfd_preserve preserve;
struct elf_obj_tdata *new_tdata = NULL;
bfd_size_type amt;
- /* Clear section information, since there might be a recognized bfd that
- we now check if we can replace, and we don't want to append to it. */
- abfd->sections = NULL;
- abfd->section_count = 0;
+ preserve.arch_info = abfd->arch_info;
/* Read in the ELF header in external format. */
if (bfd_bread ((PTR) &x_ehdr, (bfd_size_type) sizeof (x_ehdr), abfd)
new_tdata = (struct elf_obj_tdata *) bfd_zalloc (abfd, amt);
if (new_tdata == NULL)
return NULL;
+ preserve.tdata = elf_tdata (abfd);
elf_tdata (abfd) = new_tdata;
+ /* Clear section information, since there might be a recognized bfd that
+ we now check if we can replace, and we don't want to append to it. */
+ preserve.sections = abfd->sections;
+ preserve.section_tail = abfd->section_tail;
+ preserve.section_count = abfd->section_count;
+ preserve.section_htab = abfd->section_htab;
+ abfd->sections = NULL;
+ abfd->section_tail = &abfd->sections;
+ abfd->section_count = 0;
+ if (!bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc))
+ goto fail;
+
/* Swap in the rest of the header, now that we have the byte order. */
i_ehdrp = elf_elfheader (abfd);
elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
goto wrong;
}
+ bfd_hash_table_free (&preserve.section_htab);
return abfd->xvec;
wrong:
target-specific elf_backend_object_p function. Note that saving the
whole bfd here and restoring it would be even worse; the first thing
you notice is that the cached bfd file position gets out of sync. */
- bfd_default_set_arch_mach (abfd, previous_arch, previous_mach);
bfd_set_error (bfd_error_wrong_format);
+
fail:
- if (i_phdrp != NULL)
- bfd_release (abfd, i_phdrp);
+ abfd->arch_info = preserve.arch_info;
if (new_tdata != NULL)
- bfd_release (abfd, new_tdata);
- elf_tdata (abfd) = preserved_tdata;
- abfd->sections = preserved_sections;
- abfd->section_count = preserved_section_count;
+ {
+ /* bfd_release frees all memory more recently bfd_alloc'd than
+ its arg, as well as its arg. */
+ bfd_release (abfd, new_tdata);
+ elf_tdata (abfd) = preserve.tdata;
+ abfd->section_htab = preserve.section_htab;
+ abfd->sections = preserve.sections;
+ abfd->section_tail = preserve.section_tail;
+ abfd->section_count = preserve.section_count;
+ }
return NULL;
}
projects / external / binutils.git / commitdiff