From 252b5132c753830d5fd56823373aed85f2a0db63 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Mon, 3 May 1999 07:29:11 +0000 Subject: 19990502 sourceware import --- bfd/aout-adobe.c | 527 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 527 insertions(+) create mode 100644 bfd/aout-adobe.c (limited to 'bfd/aout-adobe.c') diff --git a/bfd/aout-adobe.c b/bfd/aout-adobe.c new file mode 100644 index 0000000..2c11ffe --- /dev/null +++ b/bfd/aout-adobe.c @@ -0,0 +1,527 @@ +/* BFD back-end for a.out.adobe binaries. + Copyright 1990, 1991, 1992, 1993, 1994 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 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 "aout/adobe.h" + +#include "aout/stab_gnu.h" +#include "libaout.h" /* BFD a.out internal data structures */ + +extern const bfd_target a_out_adobe_vec; /* Forward decl */ + +static const bfd_target *aout_adobe_callback PARAMS ((bfd *)); + +extern boolean aout_32_slurp_symbol_table PARAMS ((bfd *abfd)); +extern boolean aout_32_write_syms PARAMS ((bfd *)); +static void aout_adobe_write_section PARAMS ((bfd *abfd, sec_ptr sect)); + +/* Swaps the information in an executable header taken from a raw byte + stream memory image, into the internal exec_header structure. */ + +void aout_adobe_swap_exec_header_in + PARAMS ((bfd *abfd, struct external_exec *raw_bytes, + struct internal_exec *execp)); + +void +aout_adobe_swap_exec_header_in (abfd, raw_bytes, execp) + bfd *abfd; + struct external_exec *raw_bytes; + struct internal_exec *execp; +{ + struct external_exec *bytes = (struct external_exec *)raw_bytes; + + /* Now fill in fields in the execp, from the bytes in the raw data. */ + execp->a_info = bfd_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. */ + +PROTO(void, aout_adobe_swap_exec_header_out, + (bfd *abfd, + struct internal_exec *execp, + struct external_exec *raw_bytes)); +void +aout_adobe_swap_exec_header_out (abfd, execp, raw_bytes) + bfd *abfd; + struct internal_exec *execp; + struct external_exec *raw_bytes; +{ + struct external_exec *bytes = (struct external_exec *)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); + 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); +} + + +static const bfd_target * +aout_adobe_object_p (abfd) + bfd *abfd; +{ + struct internal_exec anexec; + struct external_exec exec_bytes; + char *targ; + + if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) + != EXEC_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_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, a_out_adobe_vec.name)) + ; /* Just continue anyway, if specifically set to this format */ + else + { + bfd_set_error (bfd_error_wrong_format); + return 0; + } + } + + aout_adobe_swap_exec_header_in (abfd, &exec_bytes, &anexec); + return aout_32_some_aout_object_p (abfd, &anexec, aout_adobe_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 * +aout_adobe_callback (abfd) + 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, 0); + + /* 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 (;;) { + if (bfd_read ((PTR) ext, 1, sizeof (*ext), abfd) != sizeof (*ext)) { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_wrong_format); + return 0; + } + 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) + (_("%s: Unknown section type in a.out.adobe file: %x\n"), + bfd_get_filename (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 (abfd, section_name); + trynum = 0; + while (!sect) { + if (bfd_get_error () != bfd_error_no_error) + return 0; /* Some other error -- slide into the sunset */ + sprintf (try_again, "%s%d", section_name, ++trynum); + sect = bfd_make_section (abfd, try_again); + } + + /* Fix the name, if it is a sprintf'd name. */ + if (sect->name == try_again) { + newname = (char *) bfd_zalloc(abfd, strlen (sect->name)); + if (newname == NULL) + return 0; + strcpy (newname, sect->name); + sect->name = newname; + } + + /* Now set the section's attributes. */ + bfd_set_section_flags (abfd, sect, flags); + sect->_raw_size = ((ext->e_size[0] << 8) /* Assumed big-endian */ + | ext->e_size[1] << 8) + | ext->e_size[2]; + sect->_cooked_size = sect->_raw_size; + sect->vma = bfd_h_get_32 (abfd, ext->e_virtbase); + sect->filepos = bfd_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; + } + } +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; +} + +struct bout_data_struct { + struct aoutdata a; + struct internal_exec e; +}; + +static boolean +aout_adobe_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; + + 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 boolean +aout_adobe_write_object_contents (abfd) + bfd *abfd; +{ + struct external_exec swapped_hdr; + static struct external_segdesc sentinel[1]; /* Initialized to zero */ + asection *sect; + + 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->_raw_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->_raw_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->_raw_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); + + 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 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). */ + if (bfd_write ((PTR) sentinel, 1, sizeof (*sentinel), abfd) + != sizeof (*sentinel)) + 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 void +aout_adobe_write_section (abfd, sect) + bfd *abfd; + sec_ptr sect; +{ + /* FIXME XXX */ +} + +static boolean +aout_adobe_set_section_contents (abfd, section, location, offset, count) + bfd *abfd; + asection *section; + PTR location; + file_ptr offset; + bfd_size_type count; +{ + file_ptr section_start; + sec_ptr sect; + + if (abfd->output_has_begun == false) { /* set by bfd.c handler */ + + /* 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->_raw_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->_raw_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->_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; +} + +static boolean +aout_adobe_set_arch_mach (abfd, arch, machine) + 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 (ignore_abfd, ignore) + bfd *ignore_abfd; + boolean ignore; +{ + return sizeof(struct internal_exec); +} + + + + +/* Build the transfer vector for Adobe A.Out files. */ + +#define aout_32_close_and_cleanup aout_32_bfd_free_cached_info + +#define aout_32_bfd_make_debug_symbol \ + ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr) + +#define aout_32_bfd_reloc_type_lookup \ + ((reloc_howto_type *(*) \ + PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr) + +#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_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_final_link _bfd_generic_final_link +#define aout_32_bfd_link_split_section _bfd_generic_link_split_section + +const bfd_target a_out_adobe_vec = +{ + "a.out.adobe", /* name */ + bfd_target_aout_flavour, + BFD_ENDIAN_BIG, /* data byte order is unknown (big assumed) */ + BFD_ENDIAN_BIG, /* hdr 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 */ + + 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, /* hdrs */ + {_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), + + (PTR) 0 +}; -- cgit v1.1