diff options
Diffstat (limited to 'bfd/aout-arm.c')
| -rw-r--r-- | bfd/aout-arm.c | 546 |
1 files changed, 0 insertions, 546 deletions
diff --git a/bfd/aout-arm.c b/bfd/aout-arm.c deleted file mode 100644 index beb900beaa1..00000000000 --- a/bfd/aout-arm.c +++ /dev/null @@ -1,546 +0,0 @@ -/* BFD back-end for raw ARM a.out binaries. - Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc. - Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org) - -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. */ - - -#define N_TXTADDR(x) \ - ((N_MAGIC(x) == NMAGIC) ? 0x8000 : \ - (N_MAGIC(x) != ZMAGIC) ? 0 : \ - (N_SHARED_LIB(x)) ? ((x).a_entry & ~(TARGET_PAGE_SIZE - 1)) : \ - TEXT_START_ADDR) - -#define TEXT_START_ADDR 0x8000 -#define TARGET_PAGE_SIZE 0x8000 -#define SEGMENT_SIZE TARGET_PAGE_SIZE -#define DEFAULT_ARCH bfd_arch_arm - -#define MY(OP) CAT(aoutarm_,OP) -#define N_BADMAG(x) ((((x).a_info & ~007200) != ZMAGIC) && \ - (((x).a_info & ~006000) != OMAGIC) && \ - ((x).a_info != NMAGIC)) -#define N_MAGIC(x) ((x).a_info & ~07200) - -#include "bfd.h" -#include "sysdep.h" - -#define MYARM(OP) CAT(aoutarm_,OP) -reloc_howto_type *MYARM(bfd_reloc_type_lookup) - PARAMS((bfd *, bfd_reloc_code_real_type)); -static boolean MYARM(write_object_contents) PARAMS((bfd *)); - -/* Avoid multiple defininitions from aoutx if supporting standarad a.out - as well as our own. */ -#define NAME(x,y) CAT3(aoutarm,_32_,y) - -#define MY_bfd_reloc_type_lookup aoutarm_bfd_reloc_type_lookup - -#include "libaout.h" -#include "aout/aout64.h" - -static bfd_reloc_status_type -MY(fix_pcrel_26_done) PARAMS ((bfd *, arelent *, asymbol *, PTR, - asection *, bfd *, char **)); - -static bfd_reloc_status_type -MY(fix_pcrel_26) PARAMS ((bfd *, arelent *, asymbol *, PTR, - asection *, bfd *, char **)); -static void MY(swap_std_reloc_in) PARAMS ((bfd *, struct reloc_std_external *, - arelent *, asymbol **, - bfd_size_type)); -void MY(swap_std_reloc_out) PARAMS ((bfd *, arelent *, - struct reloc_std_external *)); - -reloc_howto_type MY(howto_table)[] = -{ - /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask - pcdone */ - HOWTO (0, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "8", true, - 0x000000ff, 0x000000ff, false), - HOWTO (1, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "16", true, - 0x0000ffff, 0x0000ffff, false), - HOWTO (2, 0, 2, 32, false, 0, complain_overflow_bitfield, 0, "32", true, - 0xffffffff, 0xffffffff, false), - HOWTO (3, 2, 2, 26, true, 0, complain_overflow_signed, MY(fix_pcrel_26), - "ARM26", true, 0x00ffffff, 0x00ffffff, true), - HOWTO (4, 0, 0, 8, true, 0, complain_overflow_signed, 0, "DISP8", true, - 0x000000ff, 0x000000ff, true), - HOWTO (5, 0, 1, 16, true, 0, complain_overflow_signed, 0, "DISP16", true, - 0x0000ffff, 0x0000ffff, true), - HOWTO (6, 0, 2, 32, true, 0, complain_overflow_signed, 0, "DISP32", true, - 0xffffffff, 0xffffffff, true), - HOWTO (7, 2, 2, 26, false, 0, complain_overflow_signed, - MY(fix_pcrel_26_done), "ARM26D", true, 0x0, 0x0, - false), - {-1}, - HOWTO (9, 0, -1, 16, false, 0, complain_overflow_bitfield, 0, "NEG16", true, - 0x0000ffff, 0x0000ffff, false), - HOWTO (10, 0, -2, 32, false, 0, complain_overflow_bitfield, 0, "NEG32", true, - 0xffffffff, 0xffffffff, false) -}; - -#define RELOC_ARM_BITS_NEG_BIG ((unsigned int) 0x08) -#define RELOC_ARM_BITS_NEG_LITTLE ((unsigned int) 0x10) - -reloc_howto_type * -MY(reloc_howto)(abfd, rel, r_index, r_extern, r_pcrel) - bfd *abfd; - struct reloc_std_external *rel; - int *r_index; - int *r_extern; - int *r_pcrel; -{ - unsigned int r_length; - unsigned int r_pcrel_done; - unsigned int r_neg; - int index; - - *r_pcrel = 0; - if (bfd_header_big_endian (abfd)) - { - *r_index = ((rel->r_index[0] << 16) - | (rel->r_index[1] << 8) - | rel->r_index[2]); - *r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); - r_pcrel_done = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); - r_neg = (0 != (rel->r_type[0] & RELOC_ARM_BITS_NEG_BIG)); - r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) - >> RELOC_STD_BITS_LENGTH_SH_BIG); - } - else - { - *r_index = ((rel->r_index[2] << 16) - | (rel->r_index[1] << 8) - | rel->r_index[0]); - *r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); - r_pcrel_done = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); - r_neg = (0 != (rel->r_type[0] & RELOC_ARM_BITS_NEG_LITTLE)); - r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) - >> RELOC_STD_BITS_LENGTH_SH_LITTLE); - } - index = r_length + 4 * r_pcrel_done + 8 * r_neg; - if (index == 3) - *r_pcrel = 1; - - return MY(howto_table) + index; -} - -#define MY_reloc_howto(BFD, REL, IN, EX, PC) \ - MY(reloc_howto) (BFD, REL, &IN, &EX, &PC) - -void -MY(put_reloc)(abfd, r_extern, r_index, value, howto, reloc) - bfd *abfd; - int r_extern; - int r_index; - long value; - reloc_howto_type *howto; - struct reloc_std_external *reloc; -{ - unsigned int r_length; - int r_pcrel; - int r_neg; - - PUT_WORD (abfd, value, reloc->r_address); - r_length = howto->size ; /* Size as a power of two */ - - /* Special case for branch relocations. */ - if (howto->type == 3 || howto->type == 7) - r_length = 3; - - r_pcrel = howto->type & 4; /* PC Relative done? */ - r_neg = howto->type & 8; /* Negative relocation */ - if (bfd_header_big_endian (abfd)) - { - reloc->r_index[0] = r_index >> 16; - reloc->r_index[1] = r_index >> 8; - reloc->r_index[2] = r_index; - reloc->r_type[0] = - ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) - | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) - | (r_neg ? RELOC_ARM_BITS_NEG_BIG : 0) - | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); - } - else - { - reloc->r_index[2] = r_index >> 16; - reloc->r_index[1] = r_index >> 8; - reloc->r_index[0] = r_index; - reloc->r_type[0] = - ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) - | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) - | (r_neg ? RELOC_ARM_BITS_NEG_LITTLE : 0) - | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); - } -} - -#define MY_put_reloc(BFD, EXT, IDX, VAL, HOWTO, RELOC) \ - MY(put_reloc)(BFD, EXT, IDX, VAL, HOWTO, RELOC) - -void -MY(relocatable_reloc)(howto, abfd, reloc, amount, r_addr) - reloc_howto_type *howto; - bfd *abfd; - struct reloc_std_external *reloc; - bfd_vma *amount; - bfd_vma r_addr; -{ - if (howto->type == 3) - { - if (reloc->r_type[0] - & (bfd_header_big_endian (abfd) - ? RELOC_STD_BITS_EXTERN_BIG : RELOC_STD_BITS_EXTERN_LITTLE)) - { - /* The reloc is still external, so don't modify anything. */ - *amount = 0; - } - else - { - *amount -= r_addr; - /* Change the r_pcrel value -- on the ARM, this bit is set once the - relocation is done. */ - if (bfd_header_big_endian (abfd)) - reloc->r_type[0] |= RELOC_STD_BITS_PCREL_BIG; - else - reloc->r_type[0] |= RELOC_STD_BITS_PCREL_LITTLE; - } - } - else if (howto->type == 7) - *amount = 0; -} - -#define MY_relocatable_reloc(HOW, BFD, REL, AMOUNT, ADDR) \ - MY(relocatable_reloc)(HOW, BFD, REL, &(AMOUNT), ADDR) - -static bfd_reloc_status_type -MY(fix_pcrel_26_done) (abfd, reloc_entry, symbol, data, input_section, - output_bfd, error_message) - bfd *abfd; - arelent *reloc_entry; - asymbol *symbol; - PTR data; - asection *input_section; - bfd *output_bfd; - char **error_message; -{ - /* This is dead simple at present. */ - return bfd_reloc_ok; -} - -static bfd_reloc_status_type -MY(fix_pcrel_26) (abfd, reloc_entry, symbol, data, input_section, - output_bfd, error_message) - bfd *abfd; - arelent *reloc_entry; - asymbol *symbol; - PTR data; - asection *input_section; - bfd *output_bfd; - char **error_message; -{ - bfd_vma relocation; - bfd_size_type addr = reloc_entry->address; - long target = bfd_get_32 (abfd, (bfd_byte *) data + addr); - bfd_reloc_status_type flag = bfd_reloc_ok; - - /* If this is an undefined symbol, return error */ - if (symbol->section == &bfd_und_section - && (symbol->flags & BSF_WEAK) == 0) - return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined; - - /* If the sections are different, and we are doing a partial relocation, - just ignore it for now. */ - if (symbol->section->name != input_section->name - && output_bfd != (bfd *)NULL) - return bfd_reloc_ok; - - relocation = (target & 0x00ffffff) << 2; - relocation = (relocation ^ 0x02000000) - 0x02000000; /* Sign extend */ - relocation += symbol->value; - relocation += symbol->section->output_section->vma; - relocation += symbol->section->output_offset; - relocation += reloc_entry->addend; - relocation -= input_section->output_section->vma; - relocation -= input_section->output_offset; - relocation -= addr; - if (relocation & 3) - return bfd_reloc_overflow; - - /* Check for overflow */ - if (relocation & 0x02000000) - { - if ((relocation & ~ (bfd_vma) 0x03ffffff) != ~ (bfd_vma) 0x03ffffff) - flag = bfd_reloc_overflow; - } - else if (relocation & ~0x03ffffff) - flag = bfd_reloc_overflow; - - target &= ~0x00ffffff; - target |= (relocation >> 2) & 0x00ffffff; - bfd_put_32 (abfd, target, (bfd_byte *) data + addr); - - /* Now the ARM magic... Change the reloc type so that it is marked as done. - Strictly this is only necessary if we are doing a partial relocation. */ - reloc_entry->howto = &MY(howto_table)[7]; - - return flag; -} - -reloc_howto_type * -MY(bfd_reloc_type_lookup)(abfd,code) - bfd *abfd; - bfd_reloc_code_real_type code; -{ -#define ASTD(i,j) case i: return &MY(howto_table)[j] - if (code == BFD_RELOC_CTOR) - switch (bfd_get_arch_info (abfd)->bits_per_address) - { - case 32: - code = BFD_RELOC_32; - break; - default: return (CONST struct reloc_howto_struct *) 0; - } - - switch (code) - { - ASTD (BFD_RELOC_16, 1); - ASTD (BFD_RELOC_32, 2); - ASTD (BFD_RELOC_ARM_PCREL_BRANCH, 3); - ASTD (BFD_RELOC_8_PCREL, 4); - ASTD (BFD_RELOC_16_PCREL, 5); - ASTD (BFD_RELOC_32_PCREL, 6); - default: return (CONST struct reloc_howto_struct *) 0; - } -} - -#define MY_swap_std_reloc_in MY(swap_std_reloc_in) -#define MY_swap_std_reloc_out MY(swap_std_reloc_out) -#define MY_get_section_contents _bfd_generic_get_section_contents -/* #define MY_bfd_link_hash_table_create _bfd_generic_link_hash_table_create */ -/* #define MY_bfd_link_add_symbols _bfd_generic_link_add_symbols */ -/* #define MY_bfd_final_link _bfd_generic_final_link */ - -#include "aoutx.h" - -static void -MY_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; -{ - int r_index; - int r_extern; - int r_pcrel; - struct aoutdata *su = &(abfd->tdata.aout_data->a); - - cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); - - cache_ptr->howto = MY_reloc_howto (abfd, bytes, r_index, r_extern, r_pcrel); - - MOVE_ADDRESS (0); -} - -void -MY_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; - int r_length; - int r_pcrel; - int r_neg = 0; /* Negative relocs use the BASEREL bit. */ - 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 */ - if (r_length < 0) - { - r_length = -r_length; - r_neg = 1; - } - - r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ - - /* For RISC iX, in pc-relative relocs the r_pcrel bit means that the - relocation has been done already (Only for the 26-bit one I think)???!!! - */ - - if (g->howto->type == 3) - { - r_length = 3; - r_pcrel = 0; - } - else if (g->howto->type == 7) - { - r_length = 3; - r_pcrel = 1; - } - - -#if 0 - /* For a standard reloc, the addend is in the object file. */ - r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; -#endif - - /* 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) - || output_section == &bfd_abs_section - || output_section == &bfd_und_section) - { - if (bfd_abs_section.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_neg ? RELOC_ARM_BITS_NEG_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_neg ? RELOC_ARM_BITS_NEG_LITTLE: 0) - | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); - } -} - -#define MY_BFD_TARGET - -#include "aout-target.h" - -const bfd_target aout_arm_little_vec = -{ - "a.out-arm-little", /* name */ - bfd_target_aout_flavour, - BFD_ENDIAN_LITTLE, /* target byte order (little) */ - BFD_ENDIAN_LITTLE, /* target headers byte order (little) */ - (HAS_RELOC | EXEC_P | /* object flags */ - HAS_LINENO | HAS_DEBUG | - HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), - (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), - MY_symbol_leading_char, - AR_PAD_CHAR, /* ar_pad_char */ - 15, /* 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, MY_object_p, /* bfd_check_format */ - bfd_generic_archive_p, MY_core_file_p}, - {bfd_false, MY_mkobject, /* bfd_set_format */ - _bfd_generic_mkarchive, bfd_false}, - {bfd_false, MY_write_object_contents, /* bfd_write_contents */ - _bfd_write_archive_contents, bfd_false}, - - BFD_JUMP_TABLE_GENERIC (MY), - BFD_JUMP_TABLE_COPY (MY), - BFD_JUMP_TABLE_CORE (MY), - BFD_JUMP_TABLE_ARCHIVE (MY), - BFD_JUMP_TABLE_SYMBOLS (MY), - BFD_JUMP_TABLE_RELOCS (MY), - BFD_JUMP_TABLE_WRITE (MY), - BFD_JUMP_TABLE_LINK (MY), - BFD_JUMP_TABLE_DYNAMIC (MY), - - (PTR) MY_backend_data, -}; - -const bfd_target aout_arm_big_vec = -{ - "a.out-arm-big", /* name */ - bfd_target_aout_flavour, - BFD_ENDIAN_BIG, /* target byte order (big) */ - BFD_ENDIAN_BIG, /* target headers byte order (big) */ - (HAS_RELOC | EXEC_P | /* object flags */ - HAS_LINENO | HAS_DEBUG | - HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), - (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), - MY_symbol_leading_char, - AR_PAD_CHAR, /* ar_pad_char */ - 15, /* 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, MY_object_p, /* bfd_check_format */ - bfd_generic_archive_p, MY_core_file_p}, - {bfd_false, MY_mkobject, /* bfd_set_format */ - _bfd_generic_mkarchive, bfd_false}, - {bfd_false, MY_write_object_contents, /* bfd_write_contents */ - _bfd_write_archive_contents, bfd_false}, - - BFD_JUMP_TABLE_GENERIC (MY), - BFD_JUMP_TABLE_COPY (MY), - BFD_JUMP_TABLE_CORE (MY), - BFD_JUMP_TABLE_ARCHIVE (MY), - BFD_JUMP_TABLE_SYMBOLS (MY), - BFD_JUMP_TABLE_RELOCS (MY), - BFD_JUMP_TABLE_WRITE (MY), - BFD_JUMP_TABLE_LINK (MY), - BFD_JUMP_TABLE_DYNAMIC (MY), - - (PTR) MY_backend_data, -}; |