/* BFD back-end for a.out.adobe binaries.
Copyright (C) 1990-2014 Free Software Foundation, Inc.
Written by Cygnus Support. Based on bout.c.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "aout/adobe.h"
#include "aout/stab_gnu.h"
#include "libaout.h" /* BFD a.out internal data structures. */
/* Forward decl. */
extern const bfd_target aout_adobe_vec;
/* Swaps the information in an executable header taken from a raw byte
stream memory image, into the internal exec_header structure. */
static void
aout_adobe_swap_exec_header_in (bfd *abfd,
struct external_exec *bytes,
struct internal_exec *execp)
{
/* Now fill in fields in the execp, from the bytes in the raw data. */
execp->a_info = H_GET_32 (abfd, bytes->e_info);
execp->a_text = GET_WORD (abfd, bytes->e_text);
execp->a_data = GET_WORD (abfd, bytes->e_data);
execp->a_bss = GET_WORD (abfd, bytes->e_bss);
execp->a_syms = GET_WORD (abfd, bytes->e_syms);
execp->a_entry = GET_WORD (abfd, bytes->e_entry);
execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
}
/* Swaps the information in an internal exec header structure into the
supplied buffer ready for writing to disk. */
static void
aout_adobe_swap_exec_header_out (bfd *abfd,
struct internal_exec *execp,
struct external_exec *bytes)
{
/* Now fill in fields in the raw data, from the fields in the exec
struct. */
H_PUT_32 (abfd, execp->a_info , bytes->e_info);
PUT_WORD (abfd, execp->a_text , bytes->e_text);
PUT_WORD (abfd, execp->a_data , bytes->e_data);
PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
}
/* Finish up the opening of a b.out file for reading. Fill in all the
fields that are not handled by common code. */
static const bfd_target *
aout_adobe_callback (bfd *abfd)
{
struct internal_exec *execp = exec_hdr (abfd);
asection *sect;
struct external_segdesc ext[1];
char *section_name;
char try_again[30]; /* Name and number. */
char *newname;
int trynum;
flagword flags;
/* Architecture and machine type -- unknown in this format. */
bfd_set_arch_mach (abfd, bfd_arch_unknown, 0L);
/* The positions of the string table and symbol table. */
obj_str_filepos (abfd) = N_STROFF (*execp);
obj_sym_filepos (abfd) = N_SYMOFF (*execp);
/* Suck up the section information from the file, one section at a time. */
for (;;)
{
bfd_size_type amt = sizeof (*ext);
if (bfd_bread ( ext, amt, abfd) != amt)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
return NULL;
}
switch (ext->e_type[0])
{
case N_TEXT:
section_name = ".text";
flags = SEC_CODE | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
break;
case N_DATA:
section_name = ".data";
flags = SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
break;
case N_BSS:
section_name = ".bss";
flags = SEC_DATA | SEC_HAS_CONTENTS;
break;
case 0:
goto no_more_sections;
default:
(*_bfd_error_handler)
(_("%B: Unknown section type in a.out.adobe file: %x\n"),
abfd, ext->e_type[0]);
goto no_more_sections;
}
/* First one is called ".text" or whatever; subsequent ones are
".text1", ".text2", ... */
bfd_set_error (bfd_error_no_error);
sect = bfd_make_section_with_flags (abfd, section_name, flags);
trynum = 0;
while (!sect)
{
if (bfd_get_error () != bfd_error_no_error)
/* Some other error -- slide into the sunset. */
return NULL;
sprintf (try_again, "%s%d", section_name, ++trynum);
sect = bfd_make_section_with_flags (abfd, try_again, flags);
}
/* Fix the name, if it is a sprintf'd name. */
if (sect->name == try_again)
{
amt = strlen (sect->name);
newname = bfd_zalloc (abfd, amt);
if (newname == NULL)
return NULL;
strcpy (newname, sect->name);
sect->name = newname;
}
/* Assumed big-endian. */
sect->size = ((ext->e_size[0] << 8)
| ext->e_size[1] << 8
| ext->e_size[2]);
sect->vma = H_GET_32 (abfd, ext->e_virtbase);
sect->filepos = H_GET_32 (abfd, ext->e_filebase);
/* FIXME XXX alignment? */
/* Set relocation information for first section of each type. */
if (trynum == 0)
switch (ext->e_type[0])
{
case N_TEXT:
sect->rel_filepos = N_TRELOFF (*execp);
sect->reloc_count = execp->a_trsize;
break;
case N_DATA:
sect->rel_filepos = N_DRELOFF (*execp);
sect->reloc_count = execp->a_drsize;
break;
default:
break;
}
}
no_more_sections:
adata (abfd).reloc_entry_size = sizeof (struct reloc_std_external);
adata (abfd).symbol_entry_size = sizeof (struct external_nlist);
adata (abfd).page_size = 1; /* Not applicable. */
adata (abfd).segment_size = 1; /* Not applicable. */
adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
return abfd->xvec;
}
static const bfd_target *
aout_adobe_object_p (bfd *abfd)
{
struct internal_exec anexec;
struct external_exec exec_bytes;
char *targ;
bfd_size_type amt = EXEC_BYTES_SIZE;
if (bfd_bread (& exec_bytes, amt, abfd) != amt)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
return NULL;
}
anexec.a_info = H_GET_32 (abfd, exec_bytes.e_info);
/* Normally we just compare for the magic number.
However, a bunch of Adobe tools aren't fixed up yet; they generate
files using ZMAGIC(!).
If the environment variable GNUTARGET is set to "a.out.adobe", we will
take just about any a.out file as an Adobe a.out file. FIXME! */
if (N_BADMAG (anexec))
{
targ = getenv ("GNUTARGET");
if (targ && !strcmp (targ, aout_adobe_vec.name))
/* Just continue anyway, if specifically set to this format. */
;
else
{
bfd_set_error (bfd_error_wrong_format);
return NULL;
}
}
aout_adobe_swap_exec_header_in (abfd, &exec_bytes, &anexec);
return aout_32_some_aout_object_p (abfd, &anexec, aout_adobe_callback);
}
struct bout_data_struct
{
struct aoutdata a;
struct internal_exec e;
};
static bfd_boolean
aout_adobe_mkobject (bfd *abfd)
{
struct bout_data_struct *rawptr;
bfd_size_type amt = sizeof (struct bout_data_struct);
rawptr = bfd_zalloc (abfd, amt);
if (rawptr == NULL)
return FALSE;
abfd->tdata.bout_data = rawptr;
exec_hdr (abfd) = &rawptr->e;
adata (abfd).reloc_entry_size = sizeof (struct reloc_std_external);
adata (abfd).symbol_entry_size = sizeof (struct external_nlist);
adata (abfd).page_size = 1; /* Not applicable. */
adata (abfd).segment_size = 1; /* Not applicable. */
adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
return TRUE;
}
static void
aout_adobe_write_section (bfd *abfd ATTRIBUTE_UNUSED,
sec_ptr sect ATTRIBUTE_UNUSED)
{
/* FIXME XXX. */
}
static bfd_boolean
aout_adobe_write_object_contents (bfd *abfd)
{
struct external_exec swapped_hdr;
static struct external_segdesc sentinel[1]; /* Initialized to zero. */
asection *sect;
bfd_size_type amt;
exec_hdr (abfd)->a_info = ZMAGIC;
/* Calculate text size as total of text sections, etc. */
exec_hdr (abfd)->a_text = 0;
exec_hdr (abfd)->a_data = 0;
exec_hdr (abfd)->a_bss = 0;
exec_hdr (abfd)->a_trsize = 0;
exec_hdr (abfd)->a_drsize = 0;
for (sect = abfd->sections; sect; sect = sect->next)
{
if (sect->flags & SEC_CODE)
{
exec_hdr (abfd)->a_text += sect->size;
exec_hdr (abfd)->a_trsize += sect->reloc_count *
sizeof (struct reloc_std_external);
}
else if (sect->flags & SEC_DATA)
{
exec_hdr (abfd)->a_data += sect->size;
exec_hdr (abfd)->a_drsize += sect->reloc_count *
sizeof (struct reloc_std_external);
}
else if (sect->flags & SEC_ALLOC && !(sect->flags & SEC_LOAD))
exec_hdr (abfd)->a_bss += sect->size;
}
exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd)
* sizeof (struct external_nlist);
exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
aout_adobe_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
amt = EXEC_BYTES_SIZE;
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
|| bfd_bwrite (& swapped_hdr, amt, abfd) != amt)
return FALSE;
/* Now write out the section information. Text first, data next, rest
afterward. */
for (sect = abfd->sections; sect; sect = sect->next)
if (sect->flags & SEC_CODE)
aout_adobe_write_section (abfd, sect);
for (sect = abfd->sections; sect; sect = sect->next)
if (sect->flags & SEC_DATA)
aout_adobe_write_section (abfd, sect);
for (sect = abfd->sections; sect; sect = sect->next)
if (!(sect->flags & (SEC_CODE | SEC_DATA)))
aout_adobe_write_section (abfd, sect);
/* Write final `sentinel` section header (with type of 0). */
amt = sizeof (*sentinel);
if (bfd_bwrite (sentinel, amt, abfd) != amt)
return FALSE;
/* Now write out reloc info, followed by syms and strings. */
if (bfd_get_symcount (abfd) != 0)
{
if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (*exec_hdr (abfd))), SEEK_SET)
!= 0)
return FALSE;
if (! aout_32_write_syms (abfd))
return FALSE;
if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*exec_hdr (abfd))), SEEK_SET)
!= 0)
return FALSE;
for (sect = abfd->sections; sect; sect = sect->next)
if (sect->flags & SEC_CODE)
if (!aout_32_squirt_out_relocs (abfd, sect))
return FALSE;
if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*exec_hdr (abfd))), SEEK_SET)
!= 0)
return FALSE;
for (sect = abfd->sections; sect; sect = sect->next)
if (sect->flags & SEC_DATA)
if (!aout_32_squirt_out_relocs (abfd, sect))
return FALSE;
}
return TRUE;
}
static bfd_boolean
aout_adobe_set_section_contents (bfd *abfd,
asection *section,
const void * location,
file_ptr offset,
bfd_size_type count)
{
file_ptr section_start;
sec_ptr sect;
/* Set by bfd.c handler. */
if (! abfd->output_has_begun)
{
/* Assign file offsets to sections. Text sections are first, and
are contiguous. Then data sections. Everything else at the end. */
section_start = N_TXTOFF (ignore<-->me);
for (sect = abfd->sections; sect; sect = sect->next)
{
if (sect->flags & SEC_CODE)
{
sect->filepos = section_start;
/* FIXME: Round to alignment. */
section_start += sect->size;
}
}
for (sect = abfd->sections; sect; sect = sect->next)
{
if (sect->flags & SEC_DATA)
{
sect->filepos = section_start;
/* FIXME: Round to alignment. */
section_start += sect->size;
}
}
for (sect = abfd->sections; sect; sect = sect->next)
{
if (sect->flags & SEC_HAS_CONTENTS &&
!(sect->flags & (SEC_CODE | SEC_DATA)))
{
sect->filepos = section_start;
/* FIXME: Round to alignment. */
section_start += sect->size;
}
}
}
/* Regardless, once we know what we're doing, we might as well get
going. */
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
return FALSE;
if (count == 0)
return TRUE;
return bfd_bwrite (location, count, abfd) == count;
}
static bfd_boolean
aout_adobe_set_arch_mach (bfd *abfd,
enum bfd_architecture arch,
unsigned long machine)
{
if (! bfd_default_set_arch_mach (abfd, arch, machine))
return FALSE;
if (arch == bfd_arch_unknown
|| arch == bfd_arch_m68k)
return TRUE;
return FALSE;
}
static int
aout_adobe_sizeof_headers (bfd *ignore_abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
return sizeof (struct internal_exec);
}
/* Build the transfer vector for Adobe A.Out files. */
#define aout_32_find_line _bfd_nosymbols_find_line
#define aout_32_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
#define aout_32_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
#define aout_32_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
#define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
#define aout_32_set_arch_mach aout_adobe_set_arch_mach
#define aout_32_set_section_contents aout_adobe_set_section_contents
#define aout_32_sizeof_headers aout_adobe_sizeof_headers
#define aout_32_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
#define aout_32_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
#define aout_32_bfd_relax_section bfd_generic_relax_section
#define aout_32_bfd_gc_sections bfd_generic_gc_sections
#define aout_32_bfd_lookup_section_flags bfd_generic_lookup_section_flags
#define aout_32_bfd_merge_sections bfd_generic_merge_sections
#define aout_32_bfd_is_group_section bfd_generic_is_group_section
#define aout_32_bfd_discard_group bfd_generic_discard_group
#define aout_32_section_already_linked _bfd_generic_section_already_linked
#define aout_32_bfd_define_common_symbol bfd_generic_define_common_symbol
#define aout_32_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
#define aout_32_bfd_link_add_symbols _bfd_generic_link_add_symbols
#define aout_32_bfd_link_just_syms _bfd_generic_link_just_syms
#define aout_32_bfd_copy_link_hash_symbol_type \
_bfd_generic_copy_link_hash_symbol_type
#define aout_32_bfd_final_link _bfd_generic_final_link
#define aout_32_bfd_link_split_section _bfd_generic_link_split_section
const bfd_target aout_adobe_vec =
{
"a.out.adobe", /* Name. */
bfd_target_aout_flavour,
BFD_ENDIAN_BIG, /* Data byte order is unknown (big assumed). */
BFD_ENDIAN_BIG, /* Header byte order is big. */
(HAS_RELOC | EXEC_P | /* Object flags. */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT ),
/* section flags */
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_DATA | SEC_RELOC),
'_', /* Symbol leading char. */
' ', /* AR_pad_char. */
16, /* AR_max_namelen. */
0, /* match priority. */
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */
{_bfd_dummy_target, aout_adobe_object_p, /* bfd_check_format. */
bfd_generic_archive_p, _bfd_dummy_target},
{bfd_false, aout_adobe_mkobject, /* bfd_set_format. */
_bfd_generic_mkarchive, bfd_false},
{bfd_false, aout_adobe_write_object_contents,/* bfd_write_contents. */
_bfd_write_archive_contents, bfd_false},
BFD_JUMP_TABLE_GENERIC (aout_32),
BFD_JUMP_TABLE_COPY (_bfd_generic),
BFD_JUMP_TABLE_CORE (_bfd_nocore),
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
BFD_JUMP_TABLE_SYMBOLS (aout_32),
BFD_JUMP_TABLE_RELOCS (aout_32),
BFD_JUMP_TABLE_WRITE (aout_32),
BFD_JUMP_TABLE_LINK (aout_32),
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
NULL,
NULL
};