| /* BFD back-end for os9000 i386 binaries. |
| Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2001, 2002 |
| Free Software Foundation, Inc. |
| Written by Cygnus Support. |
| |
| 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| #include "bfdlink.h" |
| #include "libaout.h" /* BFD a.out internal data structures */ |
| #include "os9k.h" |
| |
| static const bfd_target * os9k_callback |
| PARAMS ((bfd *)); |
| static const bfd_target * os9k_object_p |
| PARAMS ((bfd *)); |
| static int os9k_sizeof_headers |
| PARAMS ((bfd *, bfd_boolean)); |
| bfd_boolean os9k_swap_exec_header_in |
| PARAMS ((bfd *, mh_com *, struct internal_exec *)); |
| |
| /* Swaps the information in an executable header taken from a raw byte |
| stream memory image, into the internal exec_header structure. */ |
| bfd_boolean |
| os9k_swap_exec_header_in (abfd, raw_bytes, execp) |
| bfd *abfd; |
| mh_com *raw_bytes; |
| struct internal_exec *execp; |
| { |
| mh_com *bytes = (mh_com *) raw_bytes; |
| unsigned int dload, dmemsize, dmemstart; |
| |
| /* Now fill in fields in the execp, from the bytes in the raw data. */ |
| execp->a_info = H_GET_16 (abfd, bytes->m_sync); |
| execp->a_syms = 0; |
| execp->a_entry = H_GET_32 (abfd, bytes->m_exec); |
| execp->a_talign = 2; |
| execp->a_dalign = 2; |
| execp->a_balign = 2; |
| |
| dload = H_GET_32 (abfd, bytes->m_idata); |
| execp->a_data = dload + 8; |
| |
| if (bfd_seek (abfd, (file_ptr) dload, SEEK_SET) != 0 |
| || (bfd_bread (&dmemstart, (bfd_size_type) sizeof (dmemstart), abfd) |
| != sizeof (dmemstart)) |
| || (bfd_bread (&dmemsize, (bfd_size_type) sizeof (dmemsize), abfd) |
| != sizeof (dmemsize))) |
| return FALSE; |
| |
| execp->a_tload = 0; |
| execp->a_dload = H_GET_32 (abfd, (unsigned char *) &dmemstart); |
| execp->a_text = dload - execp->a_tload; |
| execp->a_data = H_GET_32 (abfd, (unsigned char *) &dmemsize); |
| execp->a_bss = H_GET_32 (abfd, bytes->m_data) - execp->a_data; |
| |
| execp->a_trsize = 0; |
| execp->a_drsize = 0; |
| |
| return TRUE; |
| } |
| |
| #if 0 |
| /* Swaps the information in an internal exec header structure into the |
| supplied buffer ready for writing to disk. */ |
| |
| void os9k_swap_exec_header_out |
| PARAMS ((bfd *, struct internal_exec *, struct mh_com *)); |
| |
| void |
| os9k_swap_exec_header_out (abfd, execp, raw_bytes) |
| bfd *abfd; |
| struct internal_exec *execp; |
| mh_com *raw_bytes; |
| { |
| mh_com *bytes = (mh_com *) raw_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); |
| H_PUT_32 (abfd, execp->a_text, bytes->e_text); |
| H_PUT_32 (abfd, execp->a_data, bytes->e_data); |
| H_PUT_32 (abfd, execp->a_bss, bytes->e_bss); |
| H_PUT_32 (abfd, execp->a_syms, bytes->e_syms); |
| H_PUT_32 (abfd, execp->a_entry, bytes->e_entry); |
| H_PUT_32 (abfd, execp->a_trsize, bytes->e_trsize); |
| H_PUT_32 (abfd, execp->a_drsize, bytes->e_drsize); |
| H_PUT_32 (abfd, execp->a_tload, bytes->e_tload); |
| H_PUT_32 (abfd, execp->a_dload, bytes->e_dload); |
| bytes->e_talign[0] = execp->a_talign; |
| bytes->e_dalign[0] = execp->a_dalign; |
| bytes->e_balign[0] = execp->a_balign; |
| bytes->e_relaxable[0] = execp->a_relaxable; |
| } |
| |
| #endif /* 0 */ |
| |
| static const bfd_target * |
| os9k_object_p (abfd) |
| bfd *abfd; |
| { |
| struct internal_exec anexec; |
| mh_com exec_bytes; |
| |
| if (bfd_bread ((PTR) &exec_bytes, (bfd_size_type) MHCOM_BYTES_SIZE, abfd) |
| != MHCOM_BYTES_SIZE) |
| { |
| if (bfd_get_error () != bfd_error_system_call) |
| bfd_set_error (bfd_error_wrong_format); |
| return 0; |
| } |
| |
| anexec.a_info = H_GET_16 (abfd, exec_bytes.m_sync); |
| if (N_BADMAG (anexec)) |
| { |
| bfd_set_error (bfd_error_wrong_format); |
| return 0; |
| } |
| |
| if (! os9k_swap_exec_header_in (abfd, &exec_bytes, &anexec)) |
| { |
| if (bfd_get_error () != bfd_error_system_call) |
| bfd_set_error (bfd_error_wrong_format); |
| return NULL; |
| } |
| return aout_32_some_aout_object_p (abfd, &anexec, os9k_callback); |
| } |
| |
| |
| /* 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 * |
| os9k_callback (abfd) |
| bfd *abfd; |
| { |
| struct internal_exec *execp = exec_hdr (abfd); |
| unsigned long bss_start; |
| |
| /* Architecture and machine type. */ |
| bfd_set_arch_mach (abfd, bfd_arch_i386, 0); |
| |
| /* The positions of the string table and symbol table. */ |
| obj_str_filepos (abfd) = 0; |
| obj_sym_filepos (abfd) = 0; |
| |
| /* The alignments of the sections. */ |
| obj_textsec (abfd)->alignment_power = execp->a_talign; |
| obj_datasec (abfd)->alignment_power = execp->a_dalign; |
| obj_bsssec (abfd)->alignment_power = execp->a_balign; |
| |
| /* The starting addresses of the sections. */ |
| obj_textsec (abfd)->vma = execp->a_tload; |
| obj_datasec (abfd)->vma = execp->a_dload; |
| |
| /* And reload the sizes, since the aout module zaps them. */ |
| obj_textsec (abfd)->_raw_size = execp->a_text; |
| |
| bss_start = execp->a_dload + execp->a_data; /* BSS = end of data section. */ |
| obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign); |
| |
| /* The file positions of the sections. */ |
| obj_textsec (abfd)->filepos = execp->a_entry; |
| obj_datasec (abfd)->filepos = execp->a_dload; |
| |
| /* The file positions of the relocation info *** |
| obj_textsec (abfd)->rel_filepos = N_TROFF(*execp); |
| obj_datasec (abfd)->rel_filepos = N_DROFF(*execp); */ |
| |
| adata (abfd).page_size = 1; /* Not applicable. */ |
| adata (abfd).segment_size = 1;/* Not applicable. */ |
| adata (abfd).exec_bytes_size = MHCOM_BYTES_SIZE; |
| |
| return abfd->xvec; |
| } |
| |
| #if 0 |
| struct bout_data_struct |
| { |
| struct aoutdata a; |
| struct internal_exec e; |
| }; |
| |
| static bfd_boolean |
| os9k_mkobject (abfd) |
| bfd *abfd; |
| { |
| struct bout_data_struct *rawptr; |
| bfd_size_type amt = sizeof (struct bout_data_struct); |
| |
| rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, amt); |
| if (rawptr == NULL) |
| return FALSE; |
| |
| abfd->tdata.bout_data = rawptr; |
| exec_hdr (abfd) = &rawptr->e; |
| |
| obj_textsec (abfd) = (asection *) NULL; |
| obj_datasec (abfd) = (asection *) NULL; |
| obj_bsssec (abfd) = (asection *) NULL; |
| |
| return TRUE; |
| } |
| |
| static bfd_boolean |
| os9k_write_object_contents (abfd) |
| bfd *abfd; |
| { |
| struct external_exec swapped_hdr; |
| |
| if (! aout_32_make_sections (abfd)) |
| return FALSE; |
| |
| exec_hdr (abfd)->a_info = BMAGIC; |
| |
| exec_hdr (abfd)->a_text = obj_textsec (abfd)->_raw_size; |
| exec_hdr (abfd)->a_data = obj_datasec (abfd)->_raw_size; |
| exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->_raw_size; |
| exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist); |
| exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
| exec_hdr (abfd)->a_trsize = ((obj_textsec (abfd)->reloc_count) * |
| sizeof (struct relocation_info)); |
| exec_hdr (abfd)->a_drsize = ((obj_datasec (abfd)->reloc_count) * |
| sizeof (struct relocation_info)); |
| |
| exec_hdr (abfd)->a_talign = obj_textsec (abfd)->alignment_power; |
| exec_hdr (abfd)->a_dalign = obj_datasec (abfd)->alignment_power; |
| exec_hdr (abfd)->a_balign = obj_bsssec (abfd)->alignment_power; |
| |
| exec_hdr (abfd)->a_tload = obj_textsec (abfd)->vma; |
| exec_hdr (abfd)->a_dload = obj_datasec (abfd)->vma; |
| |
| bout_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr); |
| |
| if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 |
| || bfd_bwrite ((PTR) & swapped_hdr, (bfd_size_type) EXEC_BYTES_SIZE, |
| abfd) != EXEC_BYTES_SIZE) |
| 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_TROFF (*exec_hdr (abfd))), SEEK_SET) |
| != 0) |
| return FALSE; |
| |
| if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd))) |
| return FALSE; |
| if (bfd_seek (abfd, (file_ptr) (N_DROFF (*exec_hdr (abfd))), SEEK_SET) |
| != 0) |
| return FALSE; |
| |
| if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd))) |
| return FALSE; |
| } |
| return TRUE; |
| } |
| |
| static bfd_boolean |
| os9k_set_section_contents (abfd, section, location, offset, count) |
| bfd *abfd; |
| sec_ptr section; |
| unsigned char *location; |
| file_ptr offset; |
| int count; |
| { |
| |
| if (! abfd->output_has_begun) |
| { /* set by bfd.c handler */ |
| if (! aout_32_make_sections (abfd)) |
| return FALSE; |
| |
| obj_textsec (abfd)->filepos = sizeof (struct internal_exec); |
| obj_datasec (abfd)->filepos = obj_textsec (abfd)->filepos |
| + obj_textsec (abfd)->_raw_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 bfd_bwrite ((PTR) location, (bfd_size_type) count, abfd) == count; |
| |
| return TRUE; |
| } |
| #endif /* 0 */ |
| |
| static int |
| os9k_sizeof_headers (ignore_abfd, ignore) |
| bfd *ignore_abfd ATTRIBUTE_UNUSED; |
| bfd_boolean ignore ATTRIBUTE_UNUSED; |
| { |
| return sizeof (struct internal_exec); |
| } |
| |
| |
| |
| #define aout_32_close_and_cleanup aout_32_bfd_free_cached_info |
| |
| #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_get_section_contents_in_window \ |
| _bfd_generic_get_section_contents_in_window |
| |
| #define os9k_bfd_get_relocated_section_contents \ |
| bfd_generic_get_relocated_section_contents |
| #define os9k_bfd_relax_section bfd_generic_relax_section |
| #define os9k_bfd_gc_sections bfd_generic_gc_sections |
| #define os9k_bfd_merge_sections bfd_generic_merge_sections |
| #define os9k_bfd_discard_group bfd_generic_discard_group |
| #define os9k_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| #define os9k_bfd_link_hash_table_free _bfd_generic_link_hash_table_free |
| #define os9k_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| #define os9k_bfd_link_just_syms _bfd_generic_link_just_syms |
| #define os9k_bfd_final_link _bfd_generic_final_link |
| #define os9k_bfd_link_split_section _bfd_generic_link_split_section |
| |
| const bfd_target i386os9k_vec = |
| { |
| "i386os9k", /* name */ |
| bfd_target_os9k_flavour, |
| BFD_ENDIAN_LITTLE, /* data byte order is little */ |
| BFD_ENDIAN_LITTLE, /* hdr byte order is little */ |
| (HAS_RELOC | EXEC_P | WP_TEXT), /* object flags */ |
| (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */ |
| 0, /* symbol leading char */ |
| ' ', /* ar_pad_char */ |
| 16, /* ar_max_namelen */ |
| |
| bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ |
| bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ |
| {_bfd_dummy_target, os9k_object_p, /* bfd_check_format */ |
| bfd_generic_archive_p, _bfd_dummy_target}, |
| {bfd_false, bfd_false, /* bfd_set_format */ |
| _bfd_generic_mkarchive, bfd_false}, |
| {bfd_false, bfd_false, /* 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 (os9k), |
| BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| |
| NULL, |
| |
| (PTR) 0, |
| }; |