1 /* BFD back-end for TMS320C30 coff binaries. 2 Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. 3 Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au) 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 20 02110-1301, USA. */ 21 22 #include "bfd.h" 23 #include "sysdep.h" 24 #include "libbfd.h" 25 #include "bfdlink.h" 26 #include "coff/tic30.h" 27 #include "coff/internal.h" 28 #include "libcoff.h" 29 30 static int coff_tic30_select_reloc PARAMS ((reloc_howto_type *)); 31 static void rtype2howto PARAMS ((arelent *, struct internal_reloc *)); 32 static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *)); 33 34 reloc_howto_type * tic30_coff_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type)); 35 36 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) 37 38 reloc_howto_type tic30_coff_howto_table[] = 39 { 40 HOWTO (R_TIC30_ABS16, 2, 1, 16, FALSE, 0, 0, NULL, 41 "16", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE), 42 HOWTO (R_TIC30_ABS24, 2, 2, 24, FALSE, 8, complain_overflow_bitfield, NULL, 43 "24", FALSE, 0xFFFFFF00, 0xFFFFFF00, FALSE), 44 HOWTO (R_TIC30_LDP, 18, 0, 24, FALSE, 0, complain_overflow_bitfield, NULL, 45 "LDP", FALSE, 0x00FF0000, 0x000000FF, FALSE), 46 HOWTO (R_TIC30_ABS32, 2, 2, 32, FALSE, 0, complain_overflow_bitfield, NULL, 47 "32", FALSE, 0xFFFFFFFF, 0xFFFFFFFF, FALSE), 48 HOWTO (R_TIC30_PC16, 2, 1, 16, TRUE, 0, complain_overflow_signed, NULL, 49 "PCREL", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE), 50 EMPTY_HOWTO (-1) 51 }; 52 53 #ifndef coff_bfd_reloc_type_lookup 54 #define coff_bfd_reloc_type_lookup tic30_coff_reloc_type_lookup 55 56 /* For the case statement use the code values used in tc_gen_reloc to 57 map to the howto table entries that match those in both the aout 58 and coff implementations. */ 59 60 reloc_howto_type * 61 tic30_coff_reloc_type_lookup (abfd, code) 62 bfd *abfd ATTRIBUTE_UNUSED; 63 bfd_reloc_code_real_type code; 64 { 65 switch (code) 66 { 67 case BFD_RELOC_8: 68 case BFD_RELOC_TIC30_LDP: 69 return &tic30_coff_howto_table[2]; 70 case BFD_RELOC_16: 71 return &tic30_coff_howto_table[0]; 72 case BFD_RELOC_24: 73 return &tic30_coff_howto_table[1]; 74 case BFD_RELOC_16_PCREL: 75 return &tic30_coff_howto_table[4]; 76 case BFD_RELOC_32: 77 return &tic30_coff_howto_table[3]; 78 default: 79 return (reloc_howto_type *) NULL; 80 } 81 } 82 83 #endif 84 85 /* Turn a howto into a reloc number. */ 86 87 static int 88 coff_tic30_select_reloc (howto) 89 reloc_howto_type *howto; 90 { 91 return howto->type; 92 } 93 94 #define SELECT_RELOC(x,howto) x.r_type = coff_tic30_select_reloc(howto) 95 96 #define BADMAG(x) TIC30BADMAG(x) 97 #define TIC30 1 /* Customize coffcode.h */ 98 #define __A_MAGIC_SET__ 99 100 /* Code to swap in the reloc */ 101 #define SWAP_IN_RELOC_OFFSET H_GET_32 102 #define SWAP_OUT_RELOC_OFFSET H_PUT_32 103 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) dst->r_stuff[0] = 'S'; \ 104 dst->r_stuff[1] = 'C'; 105 106 /* Code to turn a r_type into a howto ptr, uses the above howto table. */ 107 108 static void 109 rtype2howto (internal, dst) 110 arelent *internal; 111 struct internal_reloc *dst; 112 { 113 switch (dst->r_type) 114 { 115 case R_TIC30_ABS16: 116 internal->howto = &tic30_coff_howto_table[0]; 117 break; 118 case R_TIC30_ABS24: 119 internal->howto = &tic30_coff_howto_table[1]; 120 break; 121 case R_TIC30_ABS32: 122 internal->howto = &tic30_coff_howto_table[3]; 123 break; 124 case R_TIC30_LDP: 125 internal->howto = &tic30_coff_howto_table[2]; 126 break; 127 case R_TIC30_PC16: 128 internal->howto = &tic30_coff_howto_table[4]; 129 break; 130 default: 131 abort (); 132 break; 133 } 134 } 135 136 #define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry) 137 138 /* Perform any necessary magic to the addend in a reloc entry */ 139 140 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ 141 cache_ptr->addend = ext_reloc.r_offset; 142 143 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ 144 reloc_processing(relent, reloc, symbols, abfd, section) 145 146 static void 147 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 } 165 166 #include "coffcode.h" 167 168 const bfd_target tic30_coff_vec = 169 { 170 "coff-tic30", /* name */ 171 bfd_target_coff_flavour, 172 BFD_ENDIAN_BIG, /* data byte order is big */ 173 BFD_ENDIAN_LITTLE, /* header byte order is little */ 174 175 (HAS_RELOC | EXEC_P | /* object flags */ 176 HAS_LINENO | HAS_DEBUG | 177 HAS_SYMS | HAS_LOCALS | WP_TEXT), 178 179 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 180 '_', /* leading symbol underscore */ 181 '/', /* ar_pad_char */ 182 15, /* ar_max_namelen */ 183 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 184 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 185 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ 186 bfd_getl64, bfd_getl_signed_64, bfd_putl64, 187 bfd_getl32, bfd_getl_signed_32, bfd_putl32, 188 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ 189 190 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ 191 bfd_generic_archive_p, _bfd_dummy_target}, 192 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ 193 bfd_false}, 194 {bfd_false, coff_write_object_contents, /* bfd_write_contents */ 195 _bfd_write_archive_contents, bfd_false}, 196 197 BFD_JUMP_TABLE_GENERIC (coff), 198 BFD_JUMP_TABLE_COPY (coff), 199 BFD_JUMP_TABLE_CORE (_bfd_nocore), 200 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), 201 BFD_JUMP_TABLE_SYMBOLS (coff), 202 BFD_JUMP_TABLE_RELOCS (coff), 203 BFD_JUMP_TABLE_WRITE (coff), 204 BFD_JUMP_TABLE_LINK (coff), 205 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 206 207 NULL, 208 209 COFF_SWAP_TABLE 210 }; 211