1/* BFD back-end for Renesas H8/500 COFF binaries. 2 Copyright (C) 1993-2017 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 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 34static reloc_howto_type r_imm8 = 35HOWTO (R_H8500_IMM8, 0, 1, 8, FALSE, 0, 36 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, FALSE); 37 38static reloc_howto_type r_imm16 = 39HOWTO (R_H8500_IMM16, 0, 1, 16, FALSE, 0, 40 complain_overflow_bitfield, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff, FALSE); 41 42static reloc_howto_type r_imm24 = 43HOWTO (R_H8500_IMM24, 0, 1, 24, FALSE, 0, 44 complain_overflow_bitfield, 0, "r_imm24", TRUE, 0x00ffffff, 0x00ffffff, FALSE); 45 46static reloc_howto_type r_imm32 = 47HOWTO (R_H8500_IMM32, 0, 1, 32, FALSE, 0, 48 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff, FALSE); 49 50static reloc_howto_type r_high8 = 51HOWTO (R_H8500_HIGH8, 0, 1, 8, FALSE, 0, 52 complain_overflow_dont, 0, "r_high8", TRUE, 0x000000ff, 0x000000ff, FALSE); 53 54static reloc_howto_type r_low16 = 55HOWTO (R_H8500_LOW16, 0, 1, 16, FALSE, 0, 56 complain_overflow_dont, 0, "r_low16", TRUE, 0x0000ffff, 0x0000ffff, FALSE); 57 58static reloc_howto_type r_pcrel8 = 59HOWTO (R_H8500_PCREL8, 0, 1, 8, TRUE, 0, complain_overflow_signed, 0, "r_pcrel8", TRUE, 0, 0, TRUE); 60 61static reloc_howto_type r_pcrel16 = 62HOWTO (R_H8500_PCREL16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "r_pcrel16", TRUE, 0, 0, TRUE); 63 64static reloc_howto_type r_high16 = 65HOWTO (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. */ 69 70static int 71coff_h8500_select_reloc (reloc_howto_type *howto) 72{ 73 return howto->type; 74} 75 76#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto) 77 78#define BADMAG(x) H8500BADMAG(x) 79#define H8500 1 /* Customize coffcode.h */ 80 81#define __A_MAGIC_SET__ 82 83/* Code to swap in the reloc. */ 84#define SWAP_IN_RELOC_OFFSET H_GET_32 85#define SWAP_OUT_RELOC_OFFSET H_PUT_32 86#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ 87 dst->r_stuff[0] = 'S'; \ 88 dst->r_stuff[1] = 'C'; 89 90/* Code to turn a r_type into a howto ptr, uses the above howto table. */ 91 92static void 93rtype2howto (arelent * internal, struct internal_reloc *dst) 94{ 95 switch (dst->r_type) 96 { 97 default: 98 internal->howto = NULL; 99 break; 100 case R_H8500_IMM8: 101 internal->howto = &r_imm8; 102 break; 103 case R_H8500_IMM16: 104 internal->howto = &r_imm16; 105 break; 106 case R_H8500_IMM24: 107 internal->howto = &r_imm24; 108 break; 109 case R_H8500_IMM32: 110 internal->howto = &r_imm32; 111 break; 112 case R_H8500_PCREL8: 113 internal->howto = &r_pcrel8; 114 break; 115 case R_H8500_PCREL16: 116 internal->howto = &r_pcrel16; 117 break; 118 case R_H8500_HIGH8: 119 internal->howto = &r_high8; 120 break; 121 case R_H8500_HIGH16: 122 internal->howto = &r_high16; 123 break; 124 case R_H8500_LOW16: 125 internal->howto = &r_low16; 126 break; 127 } 128} 129 130#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) 131 132/* Perform any necessary magic to the addend in a reloc entry. */ 133 134#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ 135 cache_ptr->addend = ext_reloc.r_offset; 136 137#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ 138 reloc_processing(relent, reloc, symbols, abfd, section) 139 140static void 141reloc_processing (arelent * relent, 142 struct internal_reloc *reloc, 143 asymbol ** symbols, 144 bfd * abfd, 145 asection * section) 146{ 147 relent->address = reloc->r_vaddr; 148 rtype2howto (relent, reloc); 149 150 if (reloc->r_symndx > 0) 151 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; 152 else 153 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 154 155 relent->addend = reloc->r_offset; 156 relent->address -= section->vma; 157} 158 159static void 160extra_case (bfd *in_abfd, 161 struct bfd_link_info *link_info, 162 struct bfd_link_order *link_order, 163 arelent *reloc, 164 bfd_byte *data, 165 unsigned int *src_ptr, 166 unsigned int *dst_ptr) 167{ 168 bfd_byte *d = data+*dst_ptr; 169 asection *input_section = link_order->u.indirect.section; 170 171 switch (reloc->howto->type) 172 { 173 case R_H8500_IMM8: 174 bfd_put_8 (in_abfd, 175 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 176 d); 177 (*dst_ptr) += 1; 178 (*src_ptr) += 1; 179 break; 180 181 case R_H8500_HIGH8: 182 bfd_put_8 (in_abfd, 183 (bfd_coff_reloc16_get_value (reloc, link_info, input_section) 184 >> 16), 185 d); 186 (*dst_ptr) += 1; 187 (*src_ptr) += 1; 188 break; 189 190 case R_H8500_IMM16: 191 bfd_put_16 (in_abfd, 192 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 193 d); 194 (*dst_ptr) += 2; 195 (*src_ptr) += 2; 196 break; 197 198 case R_H8500_LOW16: 199 bfd_put_16 (in_abfd, 200 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 201 d); 202 203 (*dst_ptr) += 2; 204 (*src_ptr) += 2; 205 break; 206 207 case R_H8500_HIGH16: 208 bfd_put_16 (in_abfd, 209 (bfd_coff_reloc16_get_value (reloc, link_info, input_section) 210 >> 16), 211 d); 212 213 (*dst_ptr) += 2; 214 (*src_ptr) += 2; 215 break; 216 217 case R_H8500_IMM24: 218 { 219 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); 220 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1); 221 v = (v & 0x00ffffff) | (o & 0xff00000); 222 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr -1); 223 (*dst_ptr) += 3; 224 (*src_ptr) += 3; 225 } 226 break; 227 case R_H8500_IMM32: 228 { 229 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); 230 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr); 231 (*dst_ptr) += 4; 232 (*src_ptr) += 4; 233 } 234 break; 235 236 case R_H8500_PCREL8: 237 { 238 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, 239 input_section); 240 bfd_vma dot = (*dst_ptr 241 + input_section->output_offset 242 + input_section->output_section->vma); 243 int gap = dst - dot - 1; /* -1 since were in the odd byte of the 244 word and the pc's been incremented. */ 245 246 if (gap > 128 || gap < -128) 247 (*link_info->callbacks->reloc_overflow) 248 (link_info, NULL, bfd_asymbol_name (*reloc->sym_ptr_ptr), 249 reloc->howto->name, reloc->addend, input_section->owner, 250 input_section, reloc->address); 251 252 bfd_put_8 (in_abfd, gap, data + *dst_ptr); 253 (*dst_ptr)++; 254 (*src_ptr)++; 255 break; 256 } 257 case R_H8500_PCREL16: 258 { 259 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, 260 input_section); 261 bfd_vma dot = (*dst_ptr 262 + input_section->output_offset 263 + input_section->output_section->vma); 264 int gap = dst - dot - 1; /* -1 since were in the odd byte of the 265 word and the pc's been incremented. */ 266 267 if (gap > 32767 || gap < -32768) 268 (*link_info->callbacks->reloc_overflow) 269 (link_info, NULL, bfd_asymbol_name (*reloc->sym_ptr_ptr), 270 reloc->howto->name, reloc->addend, input_section->owner, 271 input_section, reloc->address); 272 273 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr); 274 (*dst_ptr) += 2; 275 (*src_ptr) += 2; 276 break; 277 } 278 279 default: 280 abort (); 281 } 282} 283 284#define coff_reloc16_extra_cases extra_case 285 286#ifndef bfd_pe_print_pdata 287#define bfd_pe_print_pdata NULL 288#endif 289 290#include "coffcode.h" 291 292#undef coff_bfd_get_relocated_section_contents 293#undef coff_bfd_relax_section 294#define coff_bfd_get_relocated_section_contents \ 295 bfd_coff_reloc16_get_relocated_section_contents 296#define coff_bfd_relax_section bfd_coff_reloc16_relax_section 297 298CREATE_BIG_COFF_TARGET_VEC (h8500_coff_vec, "coff-h8500", 0, 0, '_', NULL, COFF_SWAP_TABLE) 299