1 /* BFD back-end for Renesas H8/500 COFF binaries. 2 Copyright (C) 1993-2016 Free Software Foundation, Inc. 3 Contributed by Cygnus Support. 4 Written by Steve Chamberlain, <sac (at) 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 3 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., 51 Franklin Street - Fifth Floor, Boston, 21 MA 02110-1301, USA. */ 22 23 #include "sysdep.h" 24 #include "bfd.h" 25 #include "libbfd.h" 26 #include "bfdlink.h" 27 #include "coff/h8500.h" 28 #include "coff/internal.h" 29 #include "libcoff.h" 30 31 32 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) 33 34 static reloc_howto_type r_imm8 = 35 HOWTO (R_H8500_IMM8, 0, 1, 8, FALSE, 0, 36 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, FALSE); 37 38 static reloc_howto_type r_imm16 = 39 HOWTO (R_H8500_IMM16, 0, 1, 16, FALSE, 0, 40 complain_overflow_bitfield, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff, FALSE); 41 42 static reloc_howto_type r_imm24 = 43 HOWTO (R_H8500_IMM24, 0, 1, 24, FALSE, 0, 44 complain_overflow_bitfield, 0, "r_imm24", TRUE, 0x00ffffff, 0x00ffffff, FALSE); 45 46 static reloc_howto_type r_imm32 = 47 HOWTO (R_H8500_IMM32, 0, 1, 32, FALSE, 0, 48 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff, FALSE); 49 50 static reloc_howto_type r_high8 = 51 HOWTO (R_H8500_HIGH8, 0, 1, 8, FALSE, 0, 52 complain_overflow_dont, 0, "r_high8", TRUE, 0x000000ff, 0x000000ff, FALSE); 53 54 static reloc_howto_type r_low16 = 55 HOWTO (R_H8500_LOW16, 0, 1, 16, FALSE, 0, 56 complain_overflow_dont, 0, "r_low16", TRUE, 0x0000ffff, 0x0000ffff, FALSE); 57 58 static reloc_howto_type r_pcrel8 = 59 HOWTO (R_H8500_PCREL8, 0, 1, 8, TRUE, 0, complain_overflow_signed, 0, "r_pcrel8", TRUE, 0, 0, TRUE); 60 61 static reloc_howto_type r_pcrel16 = 62 HOWTO (R_H8500_PCREL16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "r_pcrel16", TRUE, 0, 0, TRUE); 63 64 static reloc_howto_type r_high16 = 65 HOWTO (R_H8500_HIGH16, 0, 1, 8, FALSE, 0, 66 complain_overflow_dont, 0, "r_high16", TRUE, 0x000ffff, 0x0000ffff, FALSE); 67 68 /* Turn a howto into a reloc number. */ 70 71 static int 72 coff_h8500_select_reloc (reloc_howto_type *howto) 73 { 74 return howto->type; 75 } 76 77 #define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto) 78 79 #define BADMAG(x) H8500BADMAG(x) 80 #define H8500 1 /* Customize coffcode.h */ 81 82 #define __A_MAGIC_SET__ 83 84 /* Code to swap in the reloc. */ 85 #define SWAP_IN_RELOC_OFFSET H_GET_32 86 #define SWAP_OUT_RELOC_OFFSET H_PUT_32 87 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ 88 dst->r_stuff[0] = 'S'; \ 89 dst->r_stuff[1] = 'C'; 90 91 /* Code to turn a r_type into a howto ptr, uses the above howto table. */ 92 93 static void 94 rtype2howto (arelent * internal, struct internal_reloc *dst) 95 { 96 switch (dst->r_type) 97 { 98 default: 99 internal->howto = NULL; 100 break; 101 case R_H8500_IMM8: 102 internal->howto = &r_imm8; 103 break; 104 case R_H8500_IMM16: 105 internal->howto = &r_imm16; 106 break; 107 case R_H8500_IMM24: 108 internal->howto = &r_imm24; 109 break; 110 case R_H8500_IMM32: 111 internal->howto = &r_imm32; 112 break; 113 case R_H8500_PCREL8: 114 internal->howto = &r_pcrel8; 115 break; 116 case R_H8500_PCREL16: 117 internal->howto = &r_pcrel16; 118 break; 119 case R_H8500_HIGH8: 120 internal->howto = &r_high8; 121 break; 122 case R_H8500_HIGH16: 123 internal->howto = &r_high16; 124 break; 125 case R_H8500_LOW16: 126 internal->howto = &r_low16; 127 break; 128 } 129 } 130 131 #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) 132 133 /* Perform any necessary magic to the addend in a reloc entry. */ 134 135 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ 136 cache_ptr->addend = ext_reloc.r_offset; 137 138 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ 139 reloc_processing(relent, reloc, symbols, abfd, section) 140 141 static void 142 reloc_processing (arelent * relent, 143 struct internal_reloc *reloc, 144 asymbol ** symbols, 145 bfd * abfd, 146 asection * section) 147 { 148 relent->address = reloc->r_vaddr; 149 rtype2howto (relent, reloc); 150 151 if (reloc->r_symndx > 0) 152 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; 153 else 154 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 155 156 relent->addend = reloc->r_offset; 157 relent->address -= section->vma; 158 } 159 160 static void 161 extra_case (bfd *in_abfd, 162 struct bfd_link_info *link_info, 163 struct bfd_link_order *link_order, 164 arelent *reloc, 165 bfd_byte *data, 166 unsigned int *src_ptr, 167 unsigned int *dst_ptr) 168 { 169 bfd_byte *d = data+*dst_ptr; 170 asection *input_section = link_order->u.indirect.section; 171 172 switch (reloc->howto->type) 173 { 174 case R_H8500_IMM8: 175 bfd_put_8 (in_abfd, 176 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 177 d); 178 (*dst_ptr) += 1; 179 (*src_ptr) += 1; 180 break; 181 182 case R_H8500_HIGH8: 183 bfd_put_8 (in_abfd, 184 (bfd_coff_reloc16_get_value (reloc, link_info, input_section) 185 >> 16), 186 d); 187 (*dst_ptr) += 1; 188 (*src_ptr) += 1; 189 break; 190 191 case R_H8500_IMM16: 192 bfd_put_16 (in_abfd, 193 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 194 d); 195 (*dst_ptr) += 2; 196 (*src_ptr) += 2; 197 break; 198 199 case R_H8500_LOW16: 200 bfd_put_16 (in_abfd, 201 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 202 d); 203 204 (*dst_ptr) += 2; 205 (*src_ptr) += 2; 206 break; 207 208 case R_H8500_HIGH16: 209 bfd_put_16 (in_abfd, 210 (bfd_coff_reloc16_get_value (reloc, link_info, input_section) 211 >> 16), 212 d); 213 214 (*dst_ptr) += 2; 215 (*src_ptr) += 2; 216 break; 217 218 case R_H8500_IMM24: 219 { 220 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); 221 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1); 222 v = (v & 0x00ffffff) | (o & 0xff00000); 223 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr -1); 224 (*dst_ptr) += 3; 225 (*src_ptr) += 3; 226 } 227 break; 228 case R_H8500_IMM32: 229 { 230 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); 231 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr); 232 (*dst_ptr) += 4; 233 (*src_ptr) += 4; 234 } 235 break; 236 237 case R_H8500_PCREL8: 238 { 239 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, 240 input_section); 241 bfd_vma dot = (*dst_ptr 242 + input_section->output_offset 243 + input_section->output_section->vma); 244 int gap = dst - dot - 1; /* -1 since were in the odd byte of the 245 word and the pc's been incremented. */ 246 247 if (gap > 128 || gap < -128) 248 (*link_info->callbacks->reloc_overflow) 249 (link_info, NULL, bfd_asymbol_name (*reloc->sym_ptr_ptr), 250 reloc->howto->name, reloc->addend, input_section->owner, 251 input_section, reloc->address); 252 253 bfd_put_8 (in_abfd, gap, data + *dst_ptr); 254 (*dst_ptr)++; 255 (*src_ptr)++; 256 break; 257 } 258 case R_H8500_PCREL16: 259 { 260 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, 261 input_section); 262 bfd_vma dot = (*dst_ptr 263 + input_section->output_offset 264 + input_section->output_section->vma); 265 int gap = dst - dot - 1; /* -1 since were in the odd byte of the 266 word and the pc's been incremented. */ 267 268 if (gap > 32767 || gap < -32768) 269 (*link_info->callbacks->reloc_overflow) 270 (link_info, NULL, bfd_asymbol_name (*reloc->sym_ptr_ptr), 271 reloc->howto->name, reloc->addend, input_section->owner, 272 input_section, reloc->address); 273 274 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr); 275 (*dst_ptr) += 2; 276 (*src_ptr) += 2; 277 break; 278 } 279 280 default: 281 abort (); 282 } 283 } 284 285 #define coff_reloc16_extra_cases extra_case 286 287 #ifndef bfd_pe_print_pdata 288 #define bfd_pe_print_pdata NULL 289 #endif 290 291 #include "coffcode.h" 292 293 #undef coff_bfd_get_relocated_section_contents 294 #undef coff_bfd_relax_section 295 #define coff_bfd_get_relocated_section_contents \ 296 bfd_coff_reloc16_get_relocated_section_contents 297 #define coff_bfd_relax_section bfd_coff_reloc16_relax_section 298 299 CREATE_BIG_COFF_TARGET_VEC (h8500_coff_vec, "coff-h8500", 0, 0, '_', NULL, COFF_SWAP_TABLE) 300
