| 1 | /* BFD back-end for TMS320C30 coff binaries. |
| 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2007 |
| 3 | Free Software Foundation, Inc. |
| 4 | Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au) |
| 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 2 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, MA |
| 21 | 02110-1301, USA. */ |
| 22 | |
| 23 | #include "bfd.h" |
| 24 | #include "sysdep.h" |
| 25 | #include "libbfd.h" |
| 26 | #include "bfdlink.h" |
| 27 | #include "coff/tic30.h" |
| 28 | #include "coff/internal.h" |
| 29 | #include "libcoff.h" |
| 30 | |
| 31 | static int coff_tic30_select_reloc PARAMS ((reloc_howto_type *)); |
| 32 | static void rtype2howto PARAMS ((arelent *, struct internal_reloc *)); |
| 33 | static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *)); |
| 34 | |
| 35 | reloc_howto_type * tic30_coff_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 36 | |
| 37 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) |
| 38 | |
| 39 | reloc_howto_type tic30_coff_howto_table[] = |
| 40 | { |
| 41 | HOWTO (R_TIC30_ABS16, 2, 1, 16, FALSE, 0, 0, NULL, |
| 42 | "16", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE), |
| 43 | HOWTO (R_TIC30_ABS24, 2, 2, 24, FALSE, 8, complain_overflow_bitfield, NULL, |
| 44 | "24", FALSE, 0xFFFFFF00, 0xFFFFFF00, FALSE), |
| 45 | HOWTO (R_TIC30_LDP, 18, 0, 24, FALSE, 0, complain_overflow_bitfield, NULL, |
| 46 | "LDP", FALSE, 0x00FF0000, 0x000000FF, FALSE), |
| 47 | HOWTO (R_TIC30_ABS32, 2, 2, 32, FALSE, 0, complain_overflow_bitfield, NULL, |
| 48 | "32", FALSE, 0xFFFFFFFF, 0xFFFFFFFF, FALSE), |
| 49 | HOWTO (R_TIC30_PC16, 2, 1, 16, TRUE, 0, complain_overflow_signed, NULL, |
| 50 | "PCREL", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE), |
| 51 | EMPTY_HOWTO (-1) |
| 52 | }; |
| 53 | |
| 54 | #ifndef coff_bfd_reloc_type_lookup |
| 55 | #define coff_bfd_reloc_type_lookup tic30_coff_reloc_type_lookup |
| 56 | #define coff_bfd_reloc_name_lookup tic30_coff_reloc_name_lookup |
| 57 | |
| 58 | /* For the case statement use the code values used in tc_gen_reloc to |
| 59 | map to the howto table entries that match those in both the aout |
| 60 | and coff implementations. */ |
| 61 | |
| 62 | reloc_howto_type * |
| 63 | tic30_coff_reloc_type_lookup (abfd, code) |
| 64 | bfd *abfd ATTRIBUTE_UNUSED; |
| 65 | bfd_reloc_code_real_type code; |
| 66 | { |
| 67 | switch (code) |
| 68 | { |
| 69 | case BFD_RELOC_8: |
| 70 | case BFD_RELOC_TIC30_LDP: |
| 71 | return &tic30_coff_howto_table[2]; |
| 72 | case BFD_RELOC_16: |
| 73 | return &tic30_coff_howto_table[0]; |
| 74 | case BFD_RELOC_24: |
| 75 | return &tic30_coff_howto_table[1]; |
| 76 | case BFD_RELOC_16_PCREL: |
| 77 | return &tic30_coff_howto_table[4]; |
| 78 | case BFD_RELOC_32: |
| 79 | return &tic30_coff_howto_table[3]; |
| 80 | default: |
| 81 | return (reloc_howto_type *) NULL; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | static reloc_howto_type * |
| 86 | tic30_coff_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 87 | const char *r_name) |
| 88 | { |
| 89 | unsigned int i; |
| 90 | |
| 91 | for (i = 0; |
| 92 | i < (sizeof (tic30_coff_howto_table) |
| 93 | / sizeof (tic30_coff_howto_table[0])); |
| 94 | i++) |
| 95 | if (tic30_coff_howto_table[i].name != NULL |
| 96 | && strcasecmp (tic30_coff_howto_table[i].name, r_name) == 0) |
| 97 | return &tic30_coff_howto_table[i]; |
| 98 | |
| 99 | return NULL; |
| 100 | } |
| 101 | |
| 102 | #endif |
| 103 | |
| 104 | /* Turn a howto into a reloc number. */ |
| 105 | |
| 106 | static int |
| 107 | coff_tic30_select_reloc (howto) |
| 108 | reloc_howto_type *howto; |
| 109 | { |
| 110 | return howto->type; |
| 111 | } |
| 112 | |
| 113 | #define SELECT_RELOC(x,howto) x.r_type = coff_tic30_select_reloc(howto) |
| 114 | |
| 115 | #define BADMAG(x) TIC30BADMAG(x) |
| 116 | #define TIC30 1 /* Customize coffcode.h */ |
| 117 | #define __A_MAGIC_SET__ |
| 118 | |
| 119 | /* Code to swap in the reloc */ |
| 120 | #define SWAP_IN_RELOC_OFFSET H_GET_32 |
| 121 | #define SWAP_OUT_RELOC_OFFSET H_PUT_32 |
| 122 | #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) dst->r_stuff[0] = 'S'; \ |
| 123 | dst->r_stuff[1] = 'C'; |
| 124 | |
| 125 | /* Code to turn a r_type into a howto ptr, uses the above howto table. */ |
| 126 | |
| 127 | static void |
| 128 | rtype2howto (internal, dst) |
| 129 | arelent *internal; |
| 130 | struct internal_reloc *dst; |
| 131 | { |
| 132 | switch (dst->r_type) |
| 133 | { |
| 134 | case R_TIC30_ABS16: |
| 135 | internal->howto = &tic30_coff_howto_table[0]; |
| 136 | break; |
| 137 | case R_TIC30_ABS24: |
| 138 | internal->howto = &tic30_coff_howto_table[1]; |
| 139 | break; |
| 140 | case R_TIC30_ABS32: |
| 141 | internal->howto = &tic30_coff_howto_table[3]; |
| 142 | break; |
| 143 | case R_TIC30_LDP: |
| 144 | internal->howto = &tic30_coff_howto_table[2]; |
| 145 | break; |
| 146 | case R_TIC30_PC16: |
| 147 | internal->howto = &tic30_coff_howto_table[4]; |
| 148 | break; |
| 149 | default: |
| 150 | abort (); |
| 151 | break; |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry) |
| 156 | |
| 157 | /* Perform any necessary magic to the addend in a reloc entry */ |
| 158 | |
| 159 | #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ |
| 160 | cache_ptr->addend = ext_reloc.r_offset; |
| 161 | |
| 162 | #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ |
| 163 | reloc_processing(relent, reloc, symbols, abfd, section) |
| 164 | |
| 165 | static void |
| 166 | reloc_processing (relent, reloc, symbols, abfd, section) |
| 167 | arelent *relent; |
| 168 | struct internal_reloc *reloc; |
| 169 | asymbol **symbols; |
| 170 | bfd *abfd; |
| 171 | asection *section; |
| 172 | { |
| 173 | relent->address = reloc->r_vaddr; |
| 174 | rtype2howto (relent, reloc); |
| 175 | |
| 176 | if (reloc->r_symndx > 0) |
| 177 | relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; |
| 178 | else |
| 179 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 180 | |
| 181 | relent->addend = reloc->r_offset; |
| 182 | relent->address -= section->vma; |
| 183 | } |
| 184 | |
| 185 | #include "coffcode.h" |
| 186 | |
| 187 | const bfd_target tic30_coff_vec = |
| 188 | { |
| 189 | "coff-tic30", /* name */ |
| 190 | bfd_target_coff_flavour, |
| 191 | BFD_ENDIAN_BIG, /* data byte order is big */ |
| 192 | BFD_ENDIAN_LITTLE, /* header byte order is little */ |
| 193 | |
| 194 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 195 | HAS_LINENO | HAS_DEBUG | |
| 196 | HAS_SYMS | HAS_LOCALS | WP_TEXT), |
| 197 | |
| 198 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 199 | '_', /* leading symbol underscore */ |
| 200 | '/', /* ar_pad_char */ |
| 201 | 15, /* ar_max_namelen */ |
| 202 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 203 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 204 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ |
| 205 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 206 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 207 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ |
| 208 | |
| 209 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ |
| 210 | bfd_generic_archive_p, _bfd_dummy_target}, |
| 211 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ |
| 212 | bfd_false}, |
| 213 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ |
| 214 | _bfd_write_archive_contents, bfd_false}, |
| 215 | |
| 216 | BFD_JUMP_TABLE_GENERIC (coff), |
| 217 | BFD_JUMP_TABLE_COPY (coff), |
| 218 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 219 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
| 220 | BFD_JUMP_TABLE_SYMBOLS (coff), |
| 221 | BFD_JUMP_TABLE_RELOCS (coff), |
| 222 | BFD_JUMP_TABLE_WRITE (coff), |
| 223 | BFD_JUMP_TABLE_LINK (coff), |
| 224 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 225 | |
| 226 | NULL, |
| 227 | |
| 228 | COFF_SWAP_TABLE |
| 229 | }; |