1/* BFD back-end for Renesas H8/500 COFF binaries. 2 Copyright 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003 3 Free Software Foundation, Inc. 4 Contributed by Cygnus Support. 5 Written by Steve Chamberlain, <sac@cygnus.com>. 6 7 This file is part of BFD, the Binary File Descriptor library. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 22 23#include "bfd.h" 24#include "sysdep.h" 25#include "libbfd.h" 26#include "bfdlink.h" 27#include "coff/h8500.h" 28#include "coff/internal.h" 29#include "libcoff.h" 30 31static int coff_h8500_select_reloc PARAMS ((reloc_howto_type *)); 32static void rtype2howto PARAMS ((arelent *, struct internal_reloc *)); 33static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *)); 34static void extra_case PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *)); 35 36#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) 37 38static reloc_howto_type r_imm8 = 39HOWTO (R_H8500_IMM8, 0, 1, 8, FALSE, 0, 40 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, FALSE); 41 42static reloc_howto_type r_imm16 = 43HOWTO (R_H8500_IMM16, 0, 1, 16, FALSE, 0, 44 complain_overflow_bitfield, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff, FALSE); 45 46static reloc_howto_type r_imm24 = 47HOWTO (R_H8500_IMM24, 0, 1, 24, FALSE, 0, 48 complain_overflow_bitfield, 0, "r_imm24", TRUE, 0x00ffffff, 0x00ffffff, FALSE); 49 50static reloc_howto_type r_imm32 = 51HOWTO (R_H8500_IMM32, 0, 1, 32, FALSE, 0, 52 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff, FALSE); 53 54static reloc_howto_type r_high8 = 55HOWTO (R_H8500_HIGH8, 0, 1, 8, FALSE, 0, 56 complain_overflow_dont, 0, "r_high8", TRUE, 0x000000ff, 0x000000ff, FALSE); 57 58static reloc_howto_type r_low16 = 59HOWTO (R_H8500_LOW16, 0, 1, 16, FALSE, 0, 60 complain_overflow_dont, 0, "r_low16", TRUE, 0x0000ffff, 0x0000ffff, FALSE); 61 62static reloc_howto_type r_pcrel8 = 63HOWTO (R_H8500_PCREL8, 0, 1, 8, TRUE, 0, complain_overflow_signed, 0, "r_pcrel8", TRUE, 0, 0, TRUE); 64 65static reloc_howto_type r_pcrel16 = 66HOWTO (R_H8500_PCREL16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "r_pcrel16", TRUE, 0, 0, TRUE); 67 68static reloc_howto_type r_high16 = 69HOWTO (R_H8500_HIGH16, 0, 1, 8, FALSE, 0, 70 complain_overflow_dont, 0, "r_high16", TRUE, 0x000ffff, 0x0000ffff, FALSE); 71 72/* Turn a howto into a reloc number. */ 73 74static int 75coff_h8500_select_reloc (howto) 76 reloc_howto_type *howto; 77{ 78 return howto->type; 79} 80 81#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto) 82 83#define BADMAG(x) H8500BADMAG(x) 84#define H8500 1 /* Customize coffcode.h */ 85 86#define __A_MAGIC_SET__ 87 88/* Code to swap in the reloc. */ 89#define SWAP_IN_RELOC_OFFSET H_GET_32 90#define SWAP_OUT_RELOC_OFFSET H_PUT_32 91#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ 92 dst->r_stuff[0] = 'S'; \ 93 dst->r_stuff[1] = 'C'; 94 95/* Code to turn a r_type into a howto ptr, uses the above howto table. */ 96 97static void 98rtype2howto (internal, dst) 99 arelent * internal; 100 struct internal_reloc *dst; 101{ 102 switch (dst->r_type) 103 { 104 default: 105 abort (); 106 break; 107 case R_H8500_IMM8: 108 internal->howto = &r_imm8; 109 break; 110 case R_H8500_IMM16: 111 internal->howto = &r_imm16; 112 break; 113 case R_H8500_IMM24: 114 internal->howto = &r_imm24; 115 break; 116 case R_H8500_IMM32: 117 internal->howto = &r_imm32; 118 break; 119 case R_H8500_PCREL8: 120 internal->howto = &r_pcrel8; 121 break; 122 case R_H8500_PCREL16: 123 internal->howto = &r_pcrel16; 124 break; 125 case R_H8500_HIGH8: 126 internal->howto = &r_high8; 127 break; 128 case R_H8500_HIGH16: 129 internal->howto = &r_high16; 130 break; 131 case R_H8500_LOW16: 132 internal->howto = &r_low16; 133 break; 134 } 135} 136 137#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) 138 139/* Perform any necessary magic to the addend in a reloc entry. */ 140 141#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ 142 cache_ptr->addend = ext_reloc.r_offset; 143 144#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ 145 reloc_processing(relent, reloc, symbols, abfd, section) 146 147static void reloc_processing (relent, reloc, symbols, abfd, section) 148 arelent * relent; 149 struct internal_reloc *reloc; 150 asymbol ** symbols; 151 bfd * abfd; 152 asection * section; 153{ 154 relent->address = reloc->r_vaddr; 155 rtype2howto (relent, reloc); 156 157 if (reloc->r_symndx > 0) 158 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; 159 else 160 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 161 162 relent->addend = reloc->r_offset; 163 relent->address -= section->vma; 164} 165 166static void 167extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr) 168 bfd *in_abfd; 169 struct bfd_link_info *link_info; 170 struct bfd_link_order *link_order; 171 arelent *reloc; 172 bfd_byte *data; 173 unsigned int *src_ptr; 174 unsigned int *dst_ptr; 175{ 176 bfd_byte *d = data+*dst_ptr; 177 asection *input_section = link_order->u.indirect.section; 178 179 switch (reloc->howto->type) 180 { 181 case R_H8500_IMM8: 182 bfd_put_8 (in_abfd, 183 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 184 d); 185 (*dst_ptr) += 1; 186 (*src_ptr) += 1; 187 break; 188 189 case R_H8500_HIGH8: 190 bfd_put_8 (in_abfd, 191 (bfd_coff_reloc16_get_value (reloc, link_info, input_section) 192 >> 16), 193 d); 194 (*dst_ptr) += 1; 195 (*src_ptr) += 1; 196 break; 197 198 case R_H8500_IMM16: 199 bfd_put_16 (in_abfd, 200 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 201 d); 202 (*dst_ptr) += 2; 203 (*src_ptr) += 2; 204 break; 205 206 case R_H8500_LOW16: 207 bfd_put_16 (in_abfd, 208 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 209 d); 210 211 (*dst_ptr) += 2; 212 (*src_ptr) += 2; 213 break; 214 215 case R_H8500_HIGH16: 216 bfd_put_16 (in_abfd, 217 (bfd_coff_reloc16_get_value (reloc, link_info, input_section) 218 >> 16), 219 d); 220 221 (*dst_ptr) += 2; 222 (*src_ptr) += 2; 223 break; 224 225 case R_H8500_IMM24: 226 { 227 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); 228 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1); 229 v = (v & 0x00ffffff) | (o & 0xff00000); 230 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr -1); 231 (*dst_ptr) += 3; 232 (*src_ptr) += 3;; 233 } 234 break; 235 case R_H8500_IMM32: 236 { 237 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); 238 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr); 239 (*dst_ptr) += 4; 240 (*src_ptr) += 4;; 241 } 242 break; 243 244 case R_H8500_PCREL8: 245 { 246 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, 247 input_section); 248 bfd_vma dot = link_order->offset 249 + *dst_ptr 250 + link_order->u.indirect.section->output_section->vma; 251 int gap = dst - dot - 1; /* -1 since were in the odd byte of the 252 word and the pc's been incremented. */ 253 254 if (gap > 128 || gap < -128) 255 { 256 if (! ((*link_info->callbacks->reloc_overflow) 257 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), 258 reloc->howto->name, reloc->addend, input_section->owner, 259 input_section, reloc->address))) 260 abort (); 261 } 262 bfd_put_8 (in_abfd, gap, data + *dst_ptr); 263 (*dst_ptr)++; 264 (*src_ptr)++; 265 break; 266 } 267 case R_H8500_PCREL16: 268 { 269 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, 270 input_section); 271 bfd_vma dot = link_order->offset 272 + *dst_ptr 273 + link_order->u.indirect.section->output_section->vma; 274 int gap = dst - dot - 1; /* -1 since were in the odd byte of the 275 word and the pc's been incremented. */ 276 277 if (gap > 32767 || gap < -32768) 278 { 279 if (! ((*link_info->callbacks->reloc_overflow) 280 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), 281 reloc->howto->name, reloc->addend, input_section->owner, 282 input_section, reloc->address))) 283 abort (); 284 } 285 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr); 286 (*dst_ptr) += 2; 287 (*src_ptr) += 2; 288 break; 289 } 290 291 default: 292 abort (); 293 } 294} 295 296#define coff_reloc16_extra_cases extra_case 297 298#include "coffcode.h" 299 300#undef coff_bfd_get_relocated_section_contents 301#undef coff_bfd_relax_section 302#define coff_bfd_get_relocated_section_contents \ 303 bfd_coff_reloc16_get_relocated_section_contents 304#define coff_bfd_relax_section bfd_coff_reloc16_relax_section 305 306CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL, COFF_SWAP_TABLE) 307