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author | Richard Henderson <rth@redhat.com> | 1999-05-03 07:29:11 +0000 |
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committer | Richard Henderson <rth@redhat.com> | 1999-05-03 07:29:11 +0000 |
commit | 252b5132c753830d5fd56823373aed85f2a0db63 (patch) | |
tree | 1af963bfd8d3e55167b81def4207f175eaff3a56 /bfd/i386os9k.c | |
download | binutils-252b5132c753830d5fd56823373aed85f2a0db63.zip binutils-252b5132c753830d5fd56823373aed85f2a0db63.tar.gz binutils-252b5132c753830d5fd56823373aed85f2a0db63.tar.bz2 |
19990502 sourceware importbinu_ss_19990502
Diffstat (limited to 'bfd/i386os9k.c')
-rw-r--r-- | bfd/i386os9k.c | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/bfd/i386os9k.c b/bfd/i386os9k.c new file mode 100644 index 0000000..2a01f5b --- /dev/null +++ b/bfd/i386os9k.c @@ -0,0 +1,371 @@ +/* BFD back-end for os9000 i386 binaries. + Copyright 1990, 1991, 1992, 1993, 1994 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 *)); + +/* Swaps the information in an executable header taken from a raw byte + stream memory image, into the internal exec_header structure. */ +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 = bfd_h_get_16 (abfd, bytes->m_sync); + execp->a_syms = 0; + execp->a_entry = bfd_h_get_32 (abfd, bytes->m_exec); + execp->a_talign = 2; + execp->a_dalign = 2; + execp->a_balign = 2; + + dload = bfd_h_get_32 (abfd, bytes->m_idata); + execp->a_data = dload + 8; + + if (bfd_seek (abfd, (file_ptr) dload, SEEK_SET) != 0 + || (bfd_read (&dmemstart, sizeof (dmemstart), 1, abfd) + != sizeof (dmemstart)) + || (bfd_read (&dmemsize, sizeof (dmemsize), 1, abfd) + != sizeof (dmemsize))) + return false; + + execp->a_tload = 0; + execp->a_dload = bfd_h_get_32 (abfd, (unsigned char *) &dmemstart); + execp->a_text = dload - execp->a_tload; + execp->a_data = bfd_h_get_32 (abfd, (unsigned char *) &dmemsize); + execp->a_bss = bfd_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. */ + +PROTO (void, os9k_swap_exec_header_out, + (bfd * abfd, + struct internal_exec * execp, + struct mh_com * raw_bytes)); +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. */ + bfd_h_put_32 (abfd, execp->a_info, bytes->e_info); + bfd_h_put_32 (abfd, execp->a_text, bytes->e_text); + bfd_h_put_32 (abfd, execp->a_data, bytes->e_data); + bfd_h_put_32 (abfd, execp->a_bss, bytes->e_bss); + bfd_h_put_32 (abfd, execp->a_syms, bytes->e_syms); + bfd_h_put_32 (abfd, execp->a_entry, bytes->e_entry); + bfd_h_put_32 (abfd, execp->a_trsize, bytes->e_trsize); + bfd_h_put_32 (abfd, execp->a_drsize, bytes->e_drsize); + bfd_h_put_32 (abfd, execp->a_tload, bytes->e_tload); + bfd_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_read ((PTR) & exec_bytes, MHCOM_BYTES_SIZE, 1, abfd) + != MHCOM_BYTES_SIZE) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_wrong_format); + return 0; + } + + anexec.a_info = bfd_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 boolean +os9k_mkobject (abfd) + bfd *abfd; +{ + struct bout_data_struct *rawptr; + + rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct)); + 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 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_write ((PTR) & swapped_hdr, 1, 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 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 == false) + { /* 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_write ((PTR) location, 1, count, abfd) == count) ? true : false; + } + return true; +} +#endif /* 0 */ + +static int +os9k_sizeof_headers (ignore_abfd, ignore) + bfd *ignore_abfd; + boolean ignore; +{ + 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_link_hash_table_create _bfd_generic_link_hash_table_create +#define os9k_bfd_link_add_symbols _bfd_generic_link_add_symbols +#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), + + (PTR) 0, +}; |