1/* BFD back-end for Renesas H8/500 COFF binaries. 2 Copyright 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003, 2004, 3 2005, 2007, 2008 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 3 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., 51 Franklin Street - Fifth Floor, Boston, 22 MA 02110-1301, USA. */ 23 24#include "sysdep.h" 25#include "bfd.h" 26#include "libbfd.h" 27#include "bfdlink.h" 28#include "coff/h8500.h" 29#include "coff/internal.h" 30#include "libcoff.h" 31 32static int coff_h8500_select_reloc PARAMS ((reloc_howto_type *)); 33static void rtype2howto PARAMS ((arelent *, struct internal_reloc *)); 34static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *)); 35static void extra_case PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *)); 36 37#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) 38 39static reloc_howto_type r_imm8 = 40HOWTO (R_H8500_IMM8, 0, 1, 8, FALSE, 0, 41 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, FALSE); 42 43static reloc_howto_type r_imm16 = 44HOWTO (R_H8500_IMM16, 0, 1, 16, FALSE, 0, 45 complain_overflow_bitfield, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff, FALSE); 46 47static reloc_howto_type r_imm24 = 48HOWTO (R_H8500_IMM24, 0, 1, 24, FALSE, 0, 49 complain_overflow_bitfield, 0, "r_imm24", TRUE, 0x00ffffff, 0x00ffffff, FALSE); 50 51static reloc_howto_type r_imm32 = 52HOWTO (R_H8500_IMM32, 0, 1, 32, FALSE, 0, 53 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff, FALSE); 54 55static reloc_howto_type r_high8 = 56HOWTO (R_H8500_HIGH8, 0, 1, 8, FALSE, 0, 57 complain_overflow_dont, 0, "r_high8", TRUE, 0x000000ff, 0x000000ff, FALSE); 58 59static reloc_howto_type r_low16 = 60HOWTO (R_H8500_LOW16, 0, 1, 16, FALSE, 0, 61 complain_overflow_dont, 0, "r_low16", TRUE, 0x0000ffff, 0x0000ffff, FALSE); 62 63static reloc_howto_type r_pcrel8 = 64HOWTO (R_H8500_PCREL8, 0, 1, 8, TRUE, 0, complain_overflow_signed, 0, "r_pcrel8", TRUE, 0, 0, TRUE); 65 66static reloc_howto_type r_pcrel16 = 67HOWTO (R_H8500_PCREL16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "r_pcrel16", TRUE, 0, 0, TRUE); 68 69static reloc_howto_type r_high16 = 70HOWTO (R_H8500_HIGH16, 0, 1, 8, FALSE, 0, 71 complain_overflow_dont, 0, "r_high16", TRUE, 0x000ffff, 0x0000ffff, FALSE); 72 73/* Turn a howto into a reloc number. */ 74 75static int 76coff_h8500_select_reloc (howto) 77 reloc_howto_type *howto; 78{ 79 return howto->type; 80} 81 82#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto) 83 84#define BADMAG(x) H8500BADMAG(x) 85#define H8500 1 /* Customize coffcode.h */ 86 87#define __A_MAGIC_SET__ 88 89/* Code to swap in the reloc. */ 90#define SWAP_IN_RELOC_OFFSET H_GET_32 91#define SWAP_OUT_RELOC_OFFSET H_PUT_32 92#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ 93 dst->r_stuff[0] = 'S'; \ 94 dst->r_stuff[1] = 'C'; 95 96/* Code to turn a r_type into a howto ptr, uses the above howto table. */ 97 98static void 99rtype2howto (internal, dst) 100 arelent * internal; 101 struct internal_reloc *dst; 102{ 103 switch (dst->r_type) 104 { 105 default: 106 abort (); 107 break; 108 case R_H8500_IMM8: 109 internal->howto = &r_imm8; 110 break; 111 case R_H8500_IMM16: 112 internal->howto = &r_imm16; 113 break; 114 case R_H8500_IMM24: 115 internal->howto = &r_imm24; 116 break; 117 case R_H8500_IMM32: 118 internal->howto = &r_imm32; 119 break; 120 case R_H8500_PCREL8: 121 internal->howto = &r_pcrel8; 122 break; 123 case R_H8500_PCREL16: 124 internal->howto = &r_pcrel16; 125 break; 126 case R_H8500_HIGH8: 127 internal->howto = &r_high8; 128 break; 129 case R_H8500_HIGH16: 130 internal->howto = &r_high16; 131 break; 132 case R_H8500_LOW16: 133 internal->howto = &r_low16; 134 break; 135 } 136} 137 138#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) 139 140/* Perform any necessary magic to the addend in a reloc entry. */ 141 142#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ 143 cache_ptr->addend = ext_reloc.r_offset; 144 145#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ 146 reloc_processing(relent, reloc, symbols, abfd, section) 147 148static void reloc_processing (relent, reloc, symbols, abfd, section) 149 arelent * relent; 150 struct internal_reloc *reloc; 151 asymbol ** symbols; 152 bfd * abfd; 153 asection * section; 154{ 155 relent->address = reloc->r_vaddr; 156 rtype2howto (relent, reloc); 157 158 if (reloc->r_symndx > 0) 159 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; 160 else 161 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 162 163 relent->addend = reloc->r_offset; 164 relent->address -= section->vma; 165} 166 167static void 168extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr) 169 bfd *in_abfd; 170 struct bfd_link_info *link_info; 171 struct bfd_link_order *link_order; 172 arelent *reloc; 173 bfd_byte *data; 174 unsigned int *src_ptr; 175 unsigned int *dst_ptr; 176{ 177 bfd_byte *d = data+*dst_ptr; 178 asection *input_section = link_order->u.indirect.section; 179 180 switch (reloc->howto->type) 181 { 182 case R_H8500_IMM8: 183 bfd_put_8 (in_abfd, 184 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 185 d); 186 (*dst_ptr) += 1; 187 (*src_ptr) += 1; 188 break; 189 190 case R_H8500_HIGH8: 191 bfd_put_8 (in_abfd, 192 (bfd_coff_reloc16_get_value (reloc, link_info, input_section) 193 >> 16), 194 d); 195 (*dst_ptr) += 1; 196 (*src_ptr) += 1; 197 break; 198 199 case R_H8500_IMM16: 200 bfd_put_16 (in_abfd, 201 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 202 d); 203 (*dst_ptr) += 2; 204 (*src_ptr) += 2; 205 break; 206 207 case R_H8500_LOW16: 208 bfd_put_16 (in_abfd, 209 bfd_coff_reloc16_get_value (reloc, link_info, input_section), 210 d); 211 212 (*dst_ptr) += 2; 213 (*src_ptr) += 2; 214 break; 215 216 case R_H8500_HIGH16: 217 bfd_put_16 (in_abfd, 218 (bfd_coff_reloc16_get_value (reloc, link_info, input_section) 219 >> 16), 220 d); 221 222 (*dst_ptr) += 2; 223 (*src_ptr) += 2; 224 break; 225 226 case R_H8500_IMM24: 227 { 228 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); 229 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1); 230 v = (v & 0x00ffffff) | (o & 0xff00000); 231 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr -1); 232 (*dst_ptr) += 3; 233 (*src_ptr) += 3;; 234 } 235 break; 236 case R_H8500_IMM32: 237 { 238 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); 239 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr); 240 (*dst_ptr) += 4; 241 (*src_ptr) += 4;; 242 } 243 break; 244 245 case R_H8500_PCREL8: 246 { 247 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, 248 input_section); 249 bfd_vma dot = (*dst_ptr 250 + input_section->output_offset 251 + input_section->output_section->vma); 252 int gap = dst - dot - 1; /* -1 since were in the odd byte of the 253 word and the pc's been incremented. */ 254 255 if (gap > 128 || gap < -128) 256 { 257 if (! ((*link_info->callbacks->reloc_overflow) 258 (link_info, NULL, 259 bfd_asymbol_name (*reloc->sym_ptr_ptr), 260 reloc->howto->name, reloc->addend, input_section->owner, 261 input_section, reloc->address))) 262 abort (); 263 } 264 bfd_put_8 (in_abfd, gap, data + *dst_ptr); 265 (*dst_ptr)++; 266 (*src_ptr)++; 267 break; 268 } 269 case R_H8500_PCREL16: 270 { 271 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, 272 input_section); 273 bfd_vma dot = (*dst_ptr 274 + input_section->output_offset 275 + input_section->output_section->vma); 276 int gap = dst - dot - 1; /* -1 since were in the odd byte of the 277 word and the pc's been incremented. */ 278 279 if (gap > 32767 || gap < -32768) 280 { 281 if (! ((*link_info->callbacks->reloc_overflow) 282 (link_info, NULL, 283 bfd_asymbol_name (*reloc->sym_ptr_ptr), 284 reloc->howto->name, reloc->addend, input_section->owner, 285 input_section, reloc->address))) 286 abort (); 287 } 288 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr); 289 (*dst_ptr) += 2; 290 (*src_ptr) += 2; 291 break; 292 } 293 294 default: 295 abort (); 296 } 297} 298 299#define coff_reloc16_extra_cases extra_case 300 301#ifndef bfd_pe_print_pdata 302#define bfd_pe_print_pdata NULL 303#endif 304 305#include "coffcode.h" 306 307#undef coff_bfd_get_relocated_section_contents 308#undef coff_bfd_relax_section 309#define coff_bfd_get_relocated_section_contents \ 310 bfd_coff_reloc16_get_relocated_section_contents 311#define coff_bfd_relax_section bfd_coff_reloc16_relax_section 312 313CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL, COFF_SWAP_TABLE) 314