diff options
Diffstat (limited to 'binutils-2.17/bfd/i386lynx.c')
| -rw-r--r-- | binutils-2.17/bfd/i386lynx.c | 582 |
1 files changed, 0 insertions, 582 deletions
diff --git a/binutils-2.17/bfd/i386lynx.c b/binutils-2.17/bfd/i386lynx.c deleted file mode 100644 index 856c0fd2..00000000 --- a/binutils-2.17/bfd/i386lynx.c +++ /dev/null @@ -1,582 +0,0 @@ -/* BFD back-end for i386 a.out binaries under LynxOS. - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2001, 2002, - 2003 Free Software Foundation, Inc. - -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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ - -#define N_SHARED_LIB(x) 0 - -#define TEXT_START_ADDR 0 -#define TARGET_PAGE_SIZE 4096 -#define SEGMENT_SIZE TARGET_PAGE_SIZE -#define DEFAULT_ARCH bfd_arch_i386 - -/* Do not "beautify" the CONCAT* macro args. Traditional C will not - remove whitespace added here, and thus will fail to concatenate - the tokens. */ -#define MY(OP) CONCAT2 (i386lynx_aout_,OP) -#define TARGETNAME "a.out-i386-lynx" - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" - -#ifndef WRITE_HEADERS -#define WRITE_HEADERS(abfd, execp) \ - { \ - bfd_size_type text_size; /* dummy vars */ \ - file_ptr text_end; \ - if (adata(abfd).magic == undecided_magic) \ - NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); \ - \ - execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \ - execp->a_entry = bfd_get_start_address (abfd); \ - \ - execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \ - obj_reloc_entry_size (abfd)); \ - execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \ - obj_reloc_entry_size (abfd)); \ - NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \ - \ - if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \ - || bfd_bwrite ((PTR) &exec_bytes, (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(*execp)), SEEK_SET) \ - != 0) \ - return FALSE; \ - \ - if (! NAME(aout,write_syms) (abfd)) return FALSE; \ - \ - if (bfd_seek (abfd, (file_ptr) (N_TRELOFF(*execp)), SEEK_SET) \ - != 0) \ - return FALSE; \ - \ - if (!NAME(lynx,squirt_out_relocs) (abfd, obj_textsec (abfd))) \ - return FALSE; \ - if (bfd_seek (abfd, (file_ptr) (N_DRELOFF(*execp)), SEEK_SET) \ - != 0) \ - return 0; \ - \ - if (!NAME(lynx,squirt_out_relocs) (abfd, obj_datasec (abfd))) \ - return FALSE; \ - } \ - } -#endif - -#include "libaout.h" -#include "aout/aout64.h" - -void NAME (lynx,swap_std_reloc_out) - PARAMS ((bfd *, arelent *, struct reloc_std_external *)); -void NAME (lynx,swap_ext_reloc_out) - PARAMS ((bfd *, arelent *, struct reloc_ext_external *)); -void NAME (lynx,swap_ext_reloc_in) - PARAMS ((bfd *, struct reloc_ext_external *, arelent *, asymbol **, - bfd_size_type)); -void NAME (lynx,swap_std_reloc_in) - PARAMS ((bfd *, struct reloc_std_external *, arelent *, asymbol **, - bfd_size_type)); -bfd_boolean NAME (lynx,slurp_reloc_table) - PARAMS ((bfd *, sec_ptr, asymbol **)); -bfd_boolean NAME (lynx,squirt_out_relocs) - PARAMS ((bfd *, asection *)); -long NAME (lynx,canonicalize_reloc) - PARAMS ((bfd *, sec_ptr, arelent **, asymbol **)); - -#ifdef LYNX_CORE - -char *lynx_core_file_failing_command (); -int lynx_core_file_failing_signal (); -bfd_boolean lynx_core_file_matches_executable_p (); -const bfd_target *lynx_core_file_p (); - -#define MY_core_file_failing_command lynx_core_file_failing_command -#define MY_core_file_failing_signal lynx_core_file_failing_signal -#define MY_core_file_matches_executable_p lynx_core_file_matches_executable_p -#define MY_core_file_p lynx_core_file_p - -#endif /* LYNX_CORE */ - - -#define KEEPIT udata.i - -extern reloc_howto_type aout_32_ext_howto_table[]; -extern reloc_howto_type aout_32_std_howto_table[]; - -/* Standard reloc stuff */ -/* Output standard relocation information to a file in target byte order. */ - -void -NAME(lynx,swap_std_reloc_out) (abfd, g, natptr) - bfd *abfd; - arelent *g; - struct reloc_std_external *natptr; -{ - int r_index; - asymbol *sym = *(g->sym_ptr_ptr); - int r_extern; - unsigned int r_length; - int r_pcrel; - int r_baserel, r_jmptable, r_relative; - unsigned int r_addend; - asection *output_section = sym->section->output_section; - - PUT_WORD (abfd, g->address, natptr->r_address); - - r_length = g->howto->size; /* Size as a power of two */ - r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ - /* r_baserel, r_jmptable, r_relative??? FIXME-soon */ - r_baserel = 0; - r_jmptable = 0; - r_relative = 0; - - r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; - - /* name was clobbered by aout_write_syms to be symbol index */ - - /* If this relocation is relative to a symbol then set the - r_index to the symbols index, and the r_extern bit. - - Absolute symbols can come in in two ways, either as an offset - from the abs section, or as a symbol which has an abs value. - check for that here - */ - - - if (bfd_is_com_section (output_section) - || bfd_is_abs_section (output_section) - || bfd_is_und_section (output_section)) - { - if (bfd_abs_section_ptr->symbol == sym) - { - /* Whoops, looked like an abs symbol, but is really an offset - from the abs section */ - r_index = 0; - r_extern = 0; - } - else - { - /* Fill in symbol */ - r_extern = 1; - r_index = (*g->sym_ptr_ptr)->KEEPIT; - } - } - else - { - /* Just an ordinary section */ - r_extern = 0; - r_index = output_section->target_index; - } - - /* now the fun stuff */ - if (bfd_header_big_endian (abfd)) - { - natptr->r_index[0] = r_index >> 16; - natptr->r_index[1] = r_index >> 8; - natptr->r_index[2] = r_index; - natptr->r_type[0] = - (r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) - | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) - | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) - | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) - | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) - | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); - } - else - { - natptr->r_index[2] = r_index >> 16; - natptr->r_index[1] = r_index >> 8; - natptr->r_index[0] = r_index; - natptr->r_type[0] = - (r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) - | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) - | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) - | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) - | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) - | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); - } -} - - -/* Extended stuff */ -/* Output extended relocation information to a file in target byte order. */ - -void -NAME(lynx,swap_ext_reloc_out) (abfd, g, natptr) - bfd *abfd; - arelent *g; - register struct reloc_ext_external *natptr; -{ - int r_index; - int r_extern; - unsigned int r_type; - unsigned int r_addend; - asymbol *sym = *(g->sym_ptr_ptr); - asection *output_section = sym->section->output_section; - - PUT_WORD (abfd, g->address, natptr->r_address); - - r_type = (unsigned int) g->howto->type; - - r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; - - - /* If this relocation is relative to a symbol then set the - r_index to the symbols index, and the r_extern bit. - - Absolute symbols can come in in two ways, either as an offset - from the abs section, or as a symbol which has an abs value. - check for that here - */ - - if (bfd_is_com_section (output_section) - || bfd_is_abs_section (output_section) - || bfd_is_und_section (output_section)) - { - if (bfd_abs_section_ptr->symbol == sym) - { - /* Whoops, looked like an abs symbol, but is really an offset - from the abs section */ - r_index = 0; - r_extern = 0; - } - else - { - r_extern = 1; - r_index = (*g->sym_ptr_ptr)->KEEPIT; - } - } - else - { - /* Just an ordinary section */ - r_extern = 0; - r_index = output_section->target_index; - } - - - /* now the fun stuff */ - if (bfd_header_big_endian (abfd)) - { - natptr->r_index[0] = r_index >> 16; - natptr->r_index[1] = r_index >> 8; - natptr->r_index[2] = r_index; - natptr->r_type[0] = - (r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) - | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG); - } - else - { - natptr->r_index[2] = r_index >> 16; - natptr->r_index[1] = r_index >> 8; - natptr->r_index[0] = r_index; - natptr->r_type[0] = - (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) - | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); - } - - PUT_WORD (abfd, r_addend, natptr->r_addend); -} - -/* BFD deals internally with all things based from the section they're - in. so, something in 10 bytes into a text section with a base of - 50 would have a symbol (.text+10) and know .text vma was 50. - - Aout keeps all it's symbols based from zero, so the symbol would - contain 60. This macro subs the base of each section from the value - to give the true offset from the section */ - - -#define MOVE_ADDRESS(ad) \ - if (r_extern) { \ - /* undefined symbol */ \ - cache_ptr->sym_ptr_ptr = symbols + r_index; \ - cache_ptr->addend = ad; \ - } else { \ - /* defined, section relative. replace symbol with pointer to \ - symbol which points to section */ \ - switch (r_index) { \ - case N_TEXT: \ - case N_TEXT | N_EXT: \ - cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \ - cache_ptr->addend = ad - su->textsec->vma; \ - break; \ - case N_DATA: \ - case N_DATA | N_EXT: \ - cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \ - cache_ptr->addend = ad - su->datasec->vma; \ - break; \ - case N_BSS: \ - case N_BSS | N_EXT: \ - cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \ - cache_ptr->addend = ad - su->bsssec->vma; \ - break; \ - default: \ - case N_ABS: \ - case N_ABS | N_EXT: \ - cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ - cache_ptr->addend = ad; \ - break; \ - } \ - } \ - -void -NAME(lynx,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) - bfd *abfd; - struct reloc_ext_external *bytes; - arelent *cache_ptr; - asymbol **symbols; - bfd_size_type symcount ATTRIBUTE_UNUSED; -{ - int r_index; - int r_extern; - unsigned int r_type; - struct aoutdata *su = &(abfd->tdata.aout_data->a); - - cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); - - r_index = bytes->r_index[1]; - r_extern = (0 != (bytes->r_index[0] & RELOC_EXT_BITS_EXTERN_BIG)); - r_type = (bytes->r_index[0] & RELOC_EXT_BITS_TYPE_BIG) - >> RELOC_EXT_BITS_TYPE_SH_BIG; - - cache_ptr->howto = aout_32_ext_howto_table + r_type; - MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); -} - -void -NAME(lynx,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) - bfd *abfd; - struct reloc_std_external *bytes; - arelent *cache_ptr; - asymbol **symbols; - bfd_size_type symcount ATTRIBUTE_UNUSED; -{ - int r_index; - int r_extern; - unsigned int r_length; - int r_pcrel; - int r_baserel, r_jmptable, r_relative; - struct aoutdata *su = &(abfd->tdata.aout_data->a); - - cache_ptr->address = H_GET_32 (abfd, bytes->r_address); - - r_index = bytes->r_index[1]; - r_extern = (0 != (bytes->r_index[0] & RELOC_STD_BITS_EXTERN_BIG)); - r_pcrel = (0 != (bytes->r_index[0] & RELOC_STD_BITS_PCREL_BIG)); - r_baserel = (0 != (bytes->r_index[0] & RELOC_STD_BITS_BASEREL_BIG)); - r_jmptable = (0 != (bytes->r_index[0] & RELOC_STD_BITS_JMPTABLE_BIG)); - r_relative = (0 != (bytes->r_index[0] & RELOC_STD_BITS_RELATIVE_BIG)); - r_length = (bytes->r_index[0] & RELOC_STD_BITS_LENGTH_BIG) - >> RELOC_STD_BITS_LENGTH_SH_BIG; - - cache_ptr->howto = aout_32_std_howto_table + r_length + 4 * r_pcrel; - /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ - - MOVE_ADDRESS (0); -} - -/* Reloc hackery */ - -bfd_boolean -NAME(lynx,slurp_reloc_table) (abfd, asect, symbols) - bfd *abfd; - sec_ptr asect; - asymbol **symbols; -{ - bfd_size_type count; - bfd_size_type reloc_size; - PTR relocs; - arelent *reloc_cache; - size_t each_size; - - if (asect->relocation) - return TRUE; - - if (asect->flags & SEC_CONSTRUCTOR) - return TRUE; - - if (asect == obj_datasec (abfd)) - { - reloc_size = exec_hdr (abfd)->a_drsize; - goto doit; - } - - if (asect == obj_textsec (abfd)) - { - reloc_size = exec_hdr (abfd)->a_trsize; - goto doit; - } - - bfd_set_error (bfd_error_invalid_operation); - return FALSE; - -doit: - if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) - return FALSE; - each_size = obj_reloc_entry_size (abfd); - - count = reloc_size / each_size; - - - reloc_cache = (arelent *) bfd_zmalloc (count * sizeof (arelent)); - if (!reloc_cache && count != 0) - return FALSE; - - relocs = (PTR) bfd_alloc (abfd, reloc_size); - if (!relocs && reloc_size != 0) - { - free (reloc_cache); - return FALSE; - } - - if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) - { - bfd_release (abfd, relocs); - free (reloc_cache); - return FALSE; - } - - if (each_size == RELOC_EXT_SIZE) - { - register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; - unsigned int counter = 0; - arelent *cache_ptr = reloc_cache; - - for (; counter < count; counter++, rptr++, cache_ptr++) - { - NAME(lynx,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols, - (bfd_size_type) bfd_get_symcount (abfd)); - } - } - else - { - register struct reloc_std_external *rptr = (struct reloc_std_external *) relocs; - unsigned int counter = 0; - arelent *cache_ptr = reloc_cache; - - for (; counter < count; counter++, rptr++, cache_ptr++) - { - NAME(lynx,swap_std_reloc_in) (abfd, rptr, cache_ptr, symbols, - (bfd_size_type) bfd_get_symcount (abfd)); - } - - } - - bfd_release (abfd, relocs); - asect->relocation = reloc_cache; - asect->reloc_count = count; - return TRUE; -} - - - -/* Write out a relocation section into an object file. */ - -bfd_boolean -NAME(lynx,squirt_out_relocs) (abfd, section) - bfd *abfd; - asection *section; -{ - arelent **generic; - unsigned char *native, *natptr; - size_t each_size; - - unsigned int count = section->reloc_count; - bfd_size_type natsize; - - if (count == 0) - return TRUE; - - each_size = obj_reloc_entry_size (abfd); - natsize = count; - natsize *= each_size; - native = (unsigned char *) bfd_zalloc (abfd, natsize); - if (!native) - return FALSE; - - generic = section->orelocation; - - if (each_size == RELOC_EXT_SIZE) - { - for (natptr = native; - count != 0; - --count, natptr += each_size, ++generic) - NAME(lynx,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *) natptr); - } - else - { - for (natptr = native; - count != 0; - --count, natptr += each_size, ++generic) - NAME(lynx,swap_std_reloc_out) (abfd, *generic, (struct reloc_std_external *) natptr); - } - - if (bfd_bwrite ((PTR) native, natsize, abfd) != natsize) - { - bfd_release (abfd, native); - return FALSE; - } - bfd_release (abfd, native); - - return TRUE; -} - -/* This is stupid. This function should be a boolean predicate */ -long -NAME(lynx,canonicalize_reloc) (abfd, section, relptr, symbols) - bfd *abfd; - sec_ptr section; - arelent **relptr; - asymbol **symbols; -{ - arelent *tblptr = section->relocation; - unsigned int count; - - if (!(tblptr || NAME(lynx,slurp_reloc_table) (abfd, section, symbols))) - return -1; - - if (section->flags & SEC_CONSTRUCTOR) - { - arelent_chain *chain = section->constructor_chain; - for (count = 0; count < section->reloc_count; count++) - { - *relptr++ = &chain->relent; - chain = chain->next; - } - } - else - { - tblptr = section->relocation; - - for (count = 0; count++ < section->reloc_count;) - { - *relptr++ = tblptr++; - } - } - *relptr = 0; - - return section->reloc_count; -} - -#define MY_canonicalize_reloc NAME(lynx,canonicalize_reloc) - -#include "aout-target.h" |