/* BFD back-end for a.out.adobe binaries.

Copyright (C) 1990-2016 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

/* xgettext:c-format */

(_("%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

};

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,

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 (0);

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_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string

#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

#define aout_32_bfd_link_check_relocs _bfd_generic_link_check_relocs

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

};