| 1 | /* Support for 32-bit SPARC NLM (NetWare Loadable Module) |
| 2 | Copyright (C) 1993-2018 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include "bfd.h" |
| 23 | #include "libbfd.h" |
| 24 | |
| 25 | #define ARCH_SIZE 32 |
| 26 | |
| 27 | #include "nlm/sparc32-ext.h" |
| 28 | #define Nlm_External_Fixed_Header Nlm32_sparc_External_Fixed_Header |
| 29 | |
| 30 | #include "libnlm.h" |
| 31 | |
| 32 | enum reloc_type |
| 33 | { |
| 34 | R_SPARC_NONE = 0, |
| 35 | R_SPARC_8, R_SPARC_16, R_SPARC_32, |
| 36 | R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32, |
| 37 | R_SPARC_WDISP30, R_SPARC_WDISP22, |
| 38 | R_SPARC_HI22, R_SPARC_22, |
| 39 | R_SPARC_13, R_SPARC_LO10, |
| 40 | R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22, |
| 41 | R_SPARC_PC10, R_SPARC_PC22, |
| 42 | R_SPARC_WPLT30, |
| 43 | R_SPARC_COPY, |
| 44 | R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT, |
| 45 | R_SPARC_RELATIVE, |
| 46 | R_SPARC_UA32, |
| 47 | R_SPARC_max |
| 48 | }; |
| 49 | |
| 50 | static reloc_howto_type nlm32_sparc_howto_table[] = |
| 51 | { |
| 52 | HOWTO (R_SPARC_NONE, 0,3, 0,FALSE,0,complain_overflow_dont, 0,"R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 53 | HOWTO (R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_8", FALSE,0,0x000000ff,TRUE), |
| 54 | HOWTO (R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_16", FALSE,0,0x0000ffff,TRUE), |
| 55 | HOWTO (R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_32", FALSE,0,0xffffffff,TRUE), |
| 56 | HOWTO (R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), |
| 57 | HOWTO (R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), |
| 58 | HOWTO (R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_DISP32", FALSE,0,0x00ffffff,TRUE), |
| 59 | HOWTO (R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), |
| 60 | HOWTO (R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), |
| 61 | HOWTO (R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, 0,"R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), |
| 62 | HOWTO (R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_22", FALSE,0,0x003fffff,TRUE), |
| 63 | HOWTO (R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_13", FALSE,0,0x00001fff,TRUE), |
| 64 | HOWTO (R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, 0,"R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), |
| 65 | HOWTO (R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), |
| 66 | HOWTO (R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), |
| 67 | HOWTO (R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), |
| 68 | HOWTO (R_SPARC_PC10, 0,2,10,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), |
| 69 | HOWTO (R_SPARC_PC22, 0,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), |
| 70 | HOWTO (R_SPARC_WPLT30, 0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_WPLT30", FALSE,0,0x00000000,TRUE), |
| 71 | HOWTO (R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_COPY", FALSE,0,0x00000000,TRUE), |
| 72 | HOWTO (R_SPARC_GLOB_DAT,0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE), |
| 73 | HOWTO (R_SPARC_JMP_SLOT,0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE), |
| 74 | HOWTO (R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), |
| 75 | HOWTO (R_SPARC_UA32, 0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_UA32", FALSE,0,0x00000000,TRUE), |
| 76 | }; |
| 77 | |
| 78 | /* Read a NetWare sparc reloc. */ |
| 79 | |
| 80 | struct nlm32_sparc_reloc_ext |
| 81 | { |
| 82 | unsigned char offset[4]; |
| 83 | unsigned char addend[4]; |
| 84 | unsigned char type[1]; |
| 85 | unsigned char pad1[3]; |
| 86 | }; |
| 87 | |
| 88 | static bfd_boolean |
| 89 | nlm_sparc_read_reloc (bfd *abfd, |
| 90 | nlmNAME (symbol_type) *sym ATTRIBUTE_UNUSED, |
| 91 | asection **secp, |
| 92 | arelent *rel) |
| 93 | { |
| 94 | bfd_vma val, addend; |
| 95 | unsigned int howto_index; |
| 96 | unsigned int type; |
| 97 | struct nlm32_sparc_reloc_ext tmp_reloc; |
| 98 | asection *code_sec; |
| 99 | |
| 100 | if (bfd_bread (&tmp_reloc, (bfd_size_type) 12, abfd) != 12) |
| 101 | return FALSE; |
| 102 | |
| 103 | code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME); |
| 104 | *secp = code_sec; |
| 105 | |
| 106 | val = bfd_get_32 (abfd, tmp_reloc.offset); |
| 107 | addend = bfd_get_32 (abfd, tmp_reloc.addend); |
| 108 | type = bfd_get_8 (abfd, tmp_reloc.type); |
| 109 | |
| 110 | rel->address = val; |
| 111 | rel->addend = addend; |
| 112 | rel->howto = NULL; |
| 113 | |
| 114 | for (howto_index = 0; |
| 115 | howto_index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type); |
| 116 | howto_index++) |
| 117 | if (nlm32_sparc_howto_table[howto_index].type == type) |
| 118 | { |
| 119 | rel->howto = &nlm32_sparc_howto_table[howto_index]; |
| 120 | break; |
| 121 | } |
| 122 | |
| 123 | #ifdef DEBUG |
| 124 | fprintf (stderr, "%s: address = %08lx, addend = %08lx, type = %u, howto = %p\n", |
| 125 | __FUNCTION__, (unsigned long) rel->address, |
| 126 | (unsigned long) rel->addend, type, rel->howto); |
| 127 | #endif |
| 128 | return TRUE; |
| 129 | |
| 130 | } |
| 131 | |
| 132 | /* Write a NetWare sparc reloc. */ |
| 133 | |
| 134 | static bfd_boolean |
| 135 | nlm_sparc_write_reloc (bfd * abfd, asection * sec, arelent * rel) |
| 136 | { |
| 137 | bfd_vma val; |
| 138 | struct nlm32_sparc_reloc_ext tmp_reloc; |
| 139 | unsigned int howto_index; |
| 140 | int type = -1; |
| 141 | reloc_howto_type *tmp; |
| 142 | |
| 143 | for (howto_index = 0; |
| 144 | howto_index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type); |
| 145 | howto_index++) |
| 146 | { |
| 147 | tmp = &nlm32_sparc_howto_table[howto_index]; |
| 148 | |
| 149 | if (tmp->rightshift == rel->howto->rightshift |
| 150 | && tmp->size == rel->howto->size |
| 151 | && tmp->bitsize == rel->howto->bitsize |
| 152 | && tmp->pc_relative == rel->howto->pc_relative |
| 153 | && tmp->bitpos == rel->howto->bitpos |
| 154 | && tmp->src_mask == rel->howto->src_mask |
| 155 | && tmp->dst_mask == rel->howto->dst_mask) |
| 156 | { |
| 157 | type = tmp->type; |
| 158 | break; |
| 159 | } |
| 160 | } |
| 161 | if (type == -1) |
| 162 | abort (); |
| 163 | |
| 164 | /* Netware wants a list of relocs for each address. |
| 165 | Format is: |
| 166 | long offset |
| 167 | long addend |
| 168 | char type |
| 169 | That should be it. */ |
| 170 | |
| 171 | /* The value we write out is the offset into the appropriate |
| 172 | segment. This offset is the section vma, adjusted by the vma of |
| 173 | the lowest section in that segment, plus the address of the |
| 174 | relocation. */ |
| 175 | val = bfd_get_section_vma (abfd, sec) + rel->address; |
| 176 | |
| 177 | #ifdef DEBUG |
| 178 | fprintf (stderr, "%s: val = %08lx, addend = %08lx, type = %u\n", |
| 179 | __FUNCTION__, (unsigned long) val, (unsigned long) rel->addend, |
| 180 | rel->howto->type); |
| 181 | #endif |
| 182 | bfd_put_32 (abfd, val, tmp_reloc.offset); |
| 183 | bfd_put_32 (abfd, rel->addend, tmp_reloc.addend); |
| 184 | bfd_put_8 (abfd, (short) (rel->howto->type), tmp_reloc.type); |
| 185 | |
| 186 | if (bfd_bwrite (&tmp_reloc, (bfd_size_type) 12, abfd) != 12) |
| 187 | return FALSE; |
| 188 | |
| 189 | return TRUE; |
| 190 | } |
| 191 | |
| 192 | /* Mangle relocs for SPARC NetWare. We can just use the standard |
| 193 | SPARC relocs. */ |
| 194 | |
| 195 | static bfd_boolean |
| 196 | nlm_sparc_mangle_relocs (bfd *abfd ATTRIBUTE_UNUSED, |
| 197 | asection *sec ATTRIBUTE_UNUSED, |
| 198 | const void * data ATTRIBUTE_UNUSED, |
| 199 | bfd_vma offset ATTRIBUTE_UNUSED, |
| 200 | bfd_size_type count ATTRIBUTE_UNUSED) |
| 201 | { |
| 202 | return TRUE; |
| 203 | } |
| 204 | |
| 205 | /* Read a NetWare sparc import record. */ |
| 206 | |
| 207 | static bfd_boolean |
| 208 | nlm_sparc_read_import (bfd *abfd, nlmNAME (symbol_type) *sym) |
| 209 | { |
| 210 | struct nlm_relent *nlm_relocs; /* Relocation records for symbol. */ |
| 211 | bfd_size_type rcount; /* Number of relocs. */ |
| 212 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Temporary 32-bit value. */ |
| 213 | unsigned char symlength; /* Length of symbol name. */ |
| 214 | char *name; |
| 215 | |
| 216 | /* First, read in the number of relocation |
| 217 | entries for this symbol. */ |
| 218 | if (bfd_bread (temp, (bfd_size_type) 4, abfd) != 4) |
| 219 | return FALSE; |
| 220 | |
| 221 | rcount = bfd_get_32 (abfd, temp); |
| 222 | |
| 223 | /* Next, read in the length of the symbol. */ |
| 224 | if (bfd_bread (& symlength, (bfd_size_type) sizeof (symlength), abfd) |
| 225 | != sizeof (symlength)) |
| 226 | return FALSE; |
| 227 | sym -> symbol.the_bfd = abfd; |
| 228 | name = bfd_alloc (abfd, (bfd_size_type) symlength + 1); |
| 229 | if (name == NULL) |
| 230 | return FALSE; |
| 231 | |
| 232 | /* Then read in the symbol. */ |
| 233 | if (bfd_bread (name, (bfd_size_type) symlength, abfd) != symlength) |
| 234 | return FALSE; |
| 235 | name[symlength] = '\0'; |
| 236 | sym -> symbol.name = name; |
| 237 | sym -> symbol.flags = 0; |
| 238 | sym -> symbol.value = 0; |
| 239 | sym -> symbol.section = bfd_und_section_ptr; |
| 240 | |
| 241 | /* Next, start reading in the relocs. */ |
| 242 | nlm_relocs = bfd_alloc (abfd, rcount * sizeof (struct nlm_relent)); |
| 243 | if (!nlm_relocs) |
| 244 | return FALSE; |
| 245 | sym -> relocs = nlm_relocs; |
| 246 | sym -> rcnt = 0; |
| 247 | while (sym -> rcnt < rcount) |
| 248 | { |
| 249 | asection *section; |
| 250 | |
| 251 | if (! nlm_sparc_read_reloc (abfd, sym, §ion, &nlm_relocs -> reloc)) |
| 252 | return FALSE; |
| 253 | nlm_relocs -> section = section; |
| 254 | nlm_relocs++; |
| 255 | sym -> rcnt++; |
| 256 | } |
| 257 | |
| 258 | return TRUE; |
| 259 | } |
| 260 | |
| 261 | static bfd_boolean |
| 262 | nlm_sparc_write_import (bfd * abfd, asection * sec, arelent * rel) |
| 263 | { |
| 264 | char temp[4]; |
| 265 | asection *code, *data, *bss, *symsec; |
| 266 | bfd_vma base; |
| 267 | |
| 268 | code = bfd_get_section_by_name (abfd, NLM_CODE_NAME); |
| 269 | data = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); |
| 270 | bss = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); |
| 271 | symsec = (*rel->sym_ptr_ptr)->section; |
| 272 | |
| 273 | if (symsec == code) |
| 274 | base = 0; |
| 275 | else if (symsec == data) |
| 276 | base = code->size; |
| 277 | else if (symsec == bss) |
| 278 | base = code->size + data->size; |
| 279 | else |
| 280 | base = 0; |
| 281 | |
| 282 | #ifdef DEBUG |
| 283 | fprintf (stderr, "%s: <%lx, 1>\n\t", |
| 284 | __FUNCTION__, (unsigned long) (base + (*rel->sym_ptr_ptr)->value)); |
| 285 | #endif |
| 286 | bfd_put_32 (abfd, base + (*rel->sym_ptr_ptr)->value, temp); |
| 287 | if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4) |
| 288 | return FALSE; |
| 289 | bfd_put_32 (abfd, (bfd_vma) 1, temp); |
| 290 | if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4) |
| 291 | return FALSE; |
| 292 | if (! nlm_sparc_write_reloc (abfd, sec, rel)) |
| 293 | return FALSE; |
| 294 | return TRUE; |
| 295 | } |
| 296 | |
| 297 | /* Write out an external reference. */ |
| 298 | |
| 299 | static bfd_boolean |
| 300 | nlm_sparc_write_external (bfd *abfd, |
| 301 | bfd_size_type count, |
| 302 | asymbol *sym, |
| 303 | struct reloc_and_sec *relocs) |
| 304 | { |
| 305 | unsigned int i; |
| 306 | bfd_byte len; |
| 307 | unsigned char temp[NLM_TARGET_LONG_SIZE]; |
| 308 | |
| 309 | bfd_put_32 (abfd, count, temp); |
| 310 | if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd) != sizeof (temp)) |
| 311 | return FALSE; |
| 312 | |
| 313 | len = strlen (sym->name); |
| 314 | if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd) |
| 315 | != sizeof (bfd_byte)) |
| 316 | || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len) |
| 317 | return FALSE; |
| 318 | |
| 319 | for (i = 0; i < count; i++) |
| 320 | if (! nlm_sparc_write_reloc (abfd, relocs[i].sec, relocs[i].rel)) |
| 321 | return FALSE; |
| 322 | |
| 323 | return TRUE; |
| 324 | } |
| 325 | |
| 326 | static bfd_boolean |
| 327 | nlm_sparc_write_export (bfd * abfd, asymbol * sym, bfd_vma value) |
| 328 | { |
| 329 | bfd_byte len; |
| 330 | bfd_byte temp[4]; |
| 331 | |
| 332 | #ifdef DEBUG |
| 333 | fprintf (stderr, "%s: <%lx, %u, %s>\n", |
| 334 | __FUNCTION__, (unsigned long) value, strlen (sym->name), sym->name); |
| 335 | #endif |
| 336 | bfd_put_32 (abfd, value, temp); |
| 337 | len = strlen (sym->name); |
| 338 | |
| 339 | if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4 |
| 340 | || bfd_bwrite (&len, (bfd_size_type) 1, abfd) != 1 |
| 341 | || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len) |
| 342 | return FALSE; |
| 343 | |
| 344 | return TRUE; |
| 345 | } |
| 346 | |
| 347 | #undef nlm_swap_fixed_header_in |
| 348 | #undef nlm_swap_fixed_header_out |
| 349 | |
| 350 | #include "nlmswap.h" |
| 351 | |
| 352 | static const struct nlm_backend_data nlm32_sparc_backend = |
| 353 | { |
| 354 | "NetWare SPARC Module \032", |
| 355 | sizeof (Nlm32_sparc_External_Fixed_Header), |
| 356 | 0, /* Optional_prefix_size. */ |
| 357 | bfd_arch_sparc, |
| 358 | 0, |
| 359 | FALSE, |
| 360 | 0, /* Backend_object_p. */ |
| 361 | 0, /* Write_prefix_func. */ |
| 362 | nlm_sparc_read_reloc, |
| 363 | nlm_sparc_mangle_relocs, |
| 364 | nlm_sparc_read_import, |
| 365 | nlm_sparc_write_import, |
| 366 | 0, /* Set_public_section. */ |
| 367 | 0, /* Get_public_offset. */ |
| 368 | nlm_swap_fixed_header_in, |
| 369 | nlm_swap_fixed_header_out, |
| 370 | nlm_sparc_write_external, |
| 371 | nlm_sparc_write_export |
| 372 | }; |
| 373 | |
| 374 | #define TARGET_BIG_NAME "nlm32-sparc" |
| 375 | #define TARGET_BIG_SYM sparc_nlm32_vec |
| 376 | #define TARGET_BACKEND_DATA & nlm32_sparc_backend |
| 377 | |
| 378 | #include "nlm-target.h" |