| /* 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) |
| (_("%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 (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 |
| }; |