| 1 | /* BFD back-end for Zilog Z800n COFF binaries. |
| 2 | Copyright 1992, 1993, 1994 Free Software Foundation, Inc. |
| 3 | Contributed by Cygnus Support. |
| 4 | Written by Steve Chamberlain, <sac@cygnus.com>. |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 21 | |
| 22 | #include "bfd.h" |
| 23 | #include "sysdep.h" |
| 24 | #include "obstack.h" |
| 25 | #include "libbfd.h" |
| 26 | #include "bfdlink.h" |
| 27 | #include "coff/z8k.h" |
| 28 | #include "coff/internal.h" |
| 29 | #include "libcoff.h" |
| 30 | |
| 31 | static reloc_howto_type r_imm32 = |
| 32 | HOWTO (R_IMM32, 0, 1, 32, false, 0, |
| 33 | complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, |
| 34 | 0xffffffff, false); |
| 35 | |
| 36 | static reloc_howto_type r_imm4l = |
| 37 | HOWTO (R_IMM4L, 0, 1, 4, false, 0, |
| 38 | complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false); |
| 39 | |
| 40 | static reloc_howto_type r_da = |
| 41 | HOWTO (R_IMM16, 0, 1, 16, false, 0, |
| 42 | complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff, |
| 43 | false); |
| 44 | |
| 45 | static reloc_howto_type r_imm8 = |
| 46 | HOWTO (R_IMM8, 0, 1, 8, false, 0, |
| 47 | complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, |
| 48 | false); |
| 49 | |
| 50 | static reloc_howto_type r_jr = |
| 51 | HOWTO (R_JR, 0, 1, 8, true, 0, complain_overflow_signed, 0, |
| 52 | "r_jr", true, 0, 0, true); |
| 53 | |
| 54 | /* Turn a howto into a reloc number */ |
| 55 | |
| 56 | static int |
| 57 | coff_z8k_select_reloc (howto) |
| 58 | reloc_howto_type *howto; |
| 59 | { |
| 60 | return howto->type; |
| 61 | } |
| 62 | |
| 63 | #define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto) |
| 64 | |
| 65 | |
| 66 | #define BADMAG(x) Z8KBADMAG(x) |
| 67 | #define Z8K 1 /* Customize coffcode.h */ |
| 68 | #define __A_MAGIC_SET__ |
| 69 | |
| 70 | |
| 71 | |
| 72 | /* Code to swap in the reloc */ |
| 73 | #define SWAP_IN_RELOC_OFFSET bfd_h_get_32 |
| 74 | #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32 |
| 75 | #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ |
| 76 | dst->r_stuff[0] = 'S'; \ |
| 77 | dst->r_stuff[1] = 'C'; |
| 78 | |
| 79 | /* Code to turn a r_type into a howto ptr, uses the above howto table |
| 80 | */ |
| 81 | |
| 82 | static void |
| 83 | rtype2howto (internal, dst) |
| 84 | arelent * internal; |
| 85 | struct internal_reloc *dst; |
| 86 | { |
| 87 | switch (dst->r_type) |
| 88 | { |
| 89 | default: |
| 90 | fprintf (stderr, "BAD 0x%x\n", dst->r_type); |
| 91 | case R_IMM8: |
| 92 | internal->howto = &r_imm8; |
| 93 | break; |
| 94 | case R_IMM16: |
| 95 | internal->howto = &r_da; |
| 96 | break; |
| 97 | case R_JR: |
| 98 | internal->howto = &r_jr; |
| 99 | break; |
| 100 | case R_IMM32: |
| 101 | internal->howto = &r_imm32; |
| 102 | break; |
| 103 | case R_IMM4L: |
| 104 | internal->howto = &r_imm4l; |
| 105 | break; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) |
| 110 | |
| 111 | |
| 112 | /* Perform any necessaru magic to the addend in a reloc entry */ |
| 113 | |
| 114 | |
| 115 | #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ |
| 116 | cache_ptr->addend = ext_reloc.r_offset; |
| 117 | |
| 118 | |
| 119 | #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ |
| 120 | reloc_processing(relent, reloc, symbols, abfd, section) |
| 121 | |
| 122 | static void |
| 123 | reloc_processing (relent, reloc, symbols, abfd, section) |
| 124 | arelent * relent; |
| 125 | struct internal_reloc *reloc; |
| 126 | asymbol ** symbols; |
| 127 | bfd * abfd; |
| 128 | asection * section; |
| 129 | { |
| 130 | relent->address = reloc->r_vaddr; |
| 131 | rtype2howto (relent, reloc); |
| 132 | |
| 133 | if (reloc->r_symndx > 0) |
| 134 | { |
| 135 | relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; |
| 136 | } |
| 137 | else |
| 138 | { |
| 139 | relent->sym_ptr_ptr = &(bfd_abs_symbol); |
| 140 | } |
| 141 | |
| 142 | |
| 143 | relent->addend = reloc->r_offset; |
| 144 | relent->address -= section->vma; |
| 145 | } |
| 146 | |
| 147 | static void |
| 148 | extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr) |
| 149 | bfd *in_abfd; |
| 150 | struct bfd_link_info *link_info; |
| 151 | struct bfd_link_order *link_order; |
| 152 | arelent *reloc; |
| 153 | bfd_byte *data; |
| 154 | unsigned int *src_ptr; |
| 155 | unsigned int *dst_ptr; |
| 156 | { |
| 157 | asection *input_section = link_order->u.indirect.section; |
| 158 | |
| 159 | switch (reloc->howto->type) |
| 160 | { |
| 161 | case R_IMM8: |
| 162 | bfd_put_8 (in_abfd, |
| 163 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), |
| 164 | data + *dst_ptr); |
| 165 | (*dst_ptr) += 1; |
| 166 | (*src_ptr) += 1; |
| 167 | break; |
| 168 | |
| 169 | case R_IMM32: |
| 170 | bfd_put_32 (in_abfd, |
| 171 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), |
| 172 | data + *dst_ptr); |
| 173 | (*dst_ptr) += 4; |
| 174 | (*src_ptr) += 4; |
| 175 | break; |
| 176 | |
| 177 | case R_IMM4L: |
| 178 | bfd_put_8 (in_abfd, |
| 179 | ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0) |
| 180 | | (0x0f |
| 181 | & bfd_coff_reloc16_get_value (reloc, link_info, |
| 182 | input_section))), |
| 183 | data + *dst_ptr); |
| 184 | (*dst_ptr) += 1; |
| 185 | (*src_ptr) += 1; |
| 186 | break; |
| 187 | |
| 188 | case R_IMM16: |
| 189 | bfd_put_16 (in_abfd, |
| 190 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), |
| 191 | data + *dst_ptr); |
| 192 | (*dst_ptr) += 2; |
| 193 | (*src_ptr) += 2; |
| 194 | break; |
| 195 | |
| 196 | case R_JR: |
| 197 | { |
| 198 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, |
| 199 | input_section); |
| 200 | bfd_vma dot = (link_order->offset |
| 201 | + *dst_ptr |
| 202 | + input_section->output_section->vma); |
| 203 | int gap = dst - dot - 1;/* -1 since were in the odd byte of the |
| 204 | word and the pc's been incremented */ |
| 205 | |
| 206 | if (gap & 1) |
| 207 | abort (); |
| 208 | gap /= 2; |
| 209 | if (gap > 128 || gap < -128) |
| 210 | { |
| 211 | if (! ((*link_info->callbacks->reloc_overflow) |
| 212 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), |
| 213 | reloc->howto->name, reloc->addend, input_section->owner, |
| 214 | input_section, reloc->address))) |
| 215 | abort (); |
| 216 | } |
| 217 | bfd_put_8 (in_abfd, gap, data + *dst_ptr); |
| 218 | (*dst_ptr)++; |
| 219 | (*src_ptr)++; |
| 220 | break; |
| 221 | } |
| 222 | default: |
| 223 | abort (); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | #define coff_reloc16_extra_cases extra_case |
| 228 | |
| 229 | #include "coffcode.h" |
| 230 | |
| 231 | |
| 232 | #undef coff_bfd_get_relocated_section_contents |
| 233 | #undef coff_bfd_relax_section |
| 234 | #define coff_bfd_get_relocated_section_contents \ |
| 235 | bfd_coff_reloc16_get_relocated_section_contents |
| 236 | #define coff_bfd_relax_section bfd_coff_reloc16_relax_section |
| 237 | |
| 238 | const bfd_target z8kcoff_vec = |
| 239 | { |
| 240 | "coff-z8k", /* name */ |
| 241 | bfd_target_coff_flavour, |
| 242 | true, /* data byte order is big */ |
| 243 | true, /* header byte order is big */ |
| 244 | |
| 245 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 246 | HAS_LINENO | HAS_DEBUG | |
| 247 | HAS_SYMS | HAS_LOCALS | WP_TEXT), |
| 248 | |
| 249 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 250 | '_', /* leading symbol underscore */ |
| 251 | '/', /* ar_pad_char */ |
| 252 | 15, /* ar_max_namelen */ |
| 253 | 1, /* minimum section alignment */ |
| 254 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 255 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 256 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ |
| 257 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 258 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 259 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ |
| 260 | |
| 261 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ |
| 262 | bfd_generic_archive_p, _bfd_dummy_target}, |
| 263 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ |
| 264 | bfd_false}, |
| 265 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ |
| 266 | _bfd_write_archive_contents, bfd_false}, |
| 267 | |
| 268 | BFD_JUMP_TABLE_GENERIC (coff), |
| 269 | BFD_JUMP_TABLE_COPY (coff), |
| 270 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 271 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
| 272 | BFD_JUMP_TABLE_SYMBOLS (coff), |
| 273 | BFD_JUMP_TABLE_RELOCS (coff), |
| 274 | BFD_JUMP_TABLE_WRITE (coff), |
| 275 | BFD_JUMP_TABLE_LINK (coff), |
| 276 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 277 | |
| 278 | COFF_SWAP_TABLE, |
| 279 | }; |