| 1 | /* Support for 32-bit SPARC NLM (NetWare Loadable Module) |
| 2 | Copyright (C) 1993 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | #include "bfd.h" |
| 21 | #include "sysdep.h" |
| 22 | #include "libbfd.h" |
| 23 | |
| 24 | #define ARCH_SIZE 32 |
| 25 | |
| 26 | #include "nlm/sparc32-ext.h" |
| 27 | #define Nlm_External_Fixed_Header Nlm32_sparc_External_Fixed_Header |
| 28 | |
| 29 | #include "libnlm.h" |
| 30 | |
| 31 | static boolean nlm_sparc_read_reloc |
| 32 | PARAMS ((bfd *, nlmNAME(symbol_type) *, asection **, arelent *)); |
| 33 | static boolean nlm_sparc_write_reloc |
| 34 | PARAMS ((bfd *, asection *, arelent *)); |
| 35 | static boolean nlm_sparc_mangle_relocs |
| 36 | PARAMS ((bfd *, asection *, PTR, bfd_vma, bfd_size_type)); |
| 37 | static boolean nlm_sparc_read_import |
| 38 | PARAMS ((bfd *, nlmNAME(symbol_type) *)); |
| 39 | static boolean nlm_sparc_write_import |
| 40 | PARAMS ((bfd *, asection *, arelent *)); |
| 41 | static boolean nlm_sparc_write_external |
| 42 | PARAMS ((bfd *, bfd_size_type, asymbol *, struct reloc_and_sec *)); |
| 43 | |
| 44 | enum reloc_type |
| 45 | { |
| 46 | R_SPARC_NONE = 0, |
| 47 | R_SPARC_8, R_SPARC_16, R_SPARC_32, |
| 48 | R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32, |
| 49 | R_SPARC_WDISP30, R_SPARC_WDISP22, |
| 50 | R_SPARC_HI22, R_SPARC_22, |
| 51 | R_SPARC_13, R_SPARC_LO10, |
| 52 | R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22, |
| 53 | R_SPARC_PC10, R_SPARC_PC22, |
| 54 | R_SPARC_WPLT30, |
| 55 | R_SPARC_COPY, |
| 56 | R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT, |
| 57 | R_SPARC_RELATIVE, |
| 58 | R_SPARC_UA32, |
| 59 | R_SPARC_max |
| 60 | }; |
| 61 | |
| 62 | #if 0 |
| 63 | static CONST char *CONST reloc_type_names[] = |
| 64 | { |
| 65 | "R_SPARC_NONE", |
| 66 | "R_SPARC_8", "R_SPARC_16", "R_SPARC_32", |
| 67 | "R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32", |
| 68 | "R_SPARC_WDISP30", "R_SPARC_WDISP22", |
| 69 | "R_SPARC_HI22", "R_SPARC_22", |
| 70 | "R_SPARC_13", "R_SPARC_LO10", |
| 71 | "R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22", |
| 72 | "R_SPARC_PC10", "R_SPARC_PC22", |
| 73 | "R_SPARC_WPLT30", |
| 74 | "R_SPARC_COPY", |
| 75 | "R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT", |
| 76 | "R_SPARC_RELATIVE", |
| 77 | "R_SPARC_UA32", |
| 78 | }; |
| 79 | #endif |
| 80 | |
| 81 | static reloc_howto_type nlm32_sparc_howto_table[] = |
| 82 | { |
| 83 | HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, 0,"R_SPARC_NONE", false,0,0x00000000,true), |
| 84 | HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,0,"R_SPARC_8", false,0,0x000000ff,true), |
| 85 | HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,0,"R_SPARC_16", false,0,0x0000ffff,true), |
| 86 | HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,0,"R_SPARC_32", false,0,0xffffffff,true), |
| 87 | HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, 0,"R_SPARC_DISP8", false,0,0x000000ff,true), |
| 88 | HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, 0,"R_SPARC_DISP16", false,0,0x0000ffff,true), |
| 89 | HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, 0,"R_SPARC_DISP32", false,0,0x00ffffff,true), |
| 90 | HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, 0,"R_SPARC_WDISP30", false,0,0x3fffffff,true), |
| 91 | HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, 0,"R_SPARC_WDISP22", false,0,0x003fffff,true), |
| 92 | HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, 0,"R_SPARC_HI22", false,0,0x003fffff,true), |
| 93 | HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,0,"R_SPARC_22", false,0,0x003fffff,true), |
| 94 | HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,0,"R_SPARC_13", false,0,0x00001fff,true), |
| 95 | HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, 0,"R_SPARC_LO10", false,0,0x000003ff,true), |
| 96 | HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_bitfield,0,"R_SPARC_GOT10", false,0,0x000003ff,true), |
| 97 | HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_bitfield,0,"R_SPARC_GOT13", false,0,0x00001fff,true), |
| 98 | HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_bitfield,0,"R_SPARC_GOT22", false,0,0x003fffff,true), |
| 99 | HOWTO(R_SPARC_PC10, 0,2,10,false,0,complain_overflow_bitfield,0,"R_SPARC_PC10", false,0,0x000003ff,true), |
| 100 | HOWTO(R_SPARC_PC22, 0,2,22,false,0,complain_overflow_bitfield,0,"R_SPARC_PC22", false,0,0x003fffff,true), |
| 101 | HOWTO(R_SPARC_WPLT30, 0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_WPLT30", false,0,0x00000000,true), |
| 102 | HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_COPY", false,0,0x00000000,true), |
| 103 | HOWTO(R_SPARC_GLOB_DAT,0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_GLOB_DAT",false,0,0x00000000,true), |
| 104 | HOWTO(R_SPARC_JMP_SLOT,0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_JMP_SLOT",false,0,0x00000000,true), |
| 105 | HOWTO(R_SPARC_RELATIVE,0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_RELATIVE",false,0,0x00000000,true), |
| 106 | HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_UA32", false,0,0x00000000,true), |
| 107 | }; |
| 108 | |
| 109 | /* Read a NetWare sparc reloc. */ |
| 110 | |
| 111 | struct nlm32_sparc_reloc_ext { |
| 112 | unsigned char offset[4]; |
| 113 | unsigned char addend[4]; |
| 114 | unsigned char type[1]; |
| 115 | unsigned char pad1[3]; |
| 116 | }; |
| 117 | |
| 118 | static boolean |
| 119 | nlm_sparc_read_reloc (abfd, sym, secp, rel) |
| 120 | bfd *abfd; |
| 121 | nlmNAME(symbol_type) *sym; |
| 122 | asection **secp; |
| 123 | arelent *rel; |
| 124 | { |
| 125 | bfd_vma val, addend; |
| 126 | int index; |
| 127 | unsigned int type; |
| 128 | struct nlm32_sparc_reloc_ext tmp_reloc; |
| 129 | asection *code_sec, *data_sec; |
| 130 | |
| 131 | if (bfd_read (&tmp_reloc, 12, 1, abfd) != 12) |
| 132 | return false; |
| 133 | |
| 134 | code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME); |
| 135 | data_sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); |
| 136 | |
| 137 | *secp = code_sec; |
| 138 | |
| 139 | val = bfd_get_32 (abfd, tmp_reloc.offset); |
| 140 | addend = bfd_get_32 (abfd, tmp_reloc.addend); |
| 141 | type = bfd_get_8 (abfd, tmp_reloc.type); |
| 142 | |
| 143 | rel->address = val; |
| 144 | rel->addend = addend; |
| 145 | rel->howto = NULL; |
| 146 | |
| 147 | for (index = 0; |
| 148 | index < sizeof(nlm32_sparc_howto_table) / sizeof(reloc_howto_type); |
| 149 | index++) |
| 150 | if (nlm32_sparc_howto_table[index].type == type) { |
| 151 | rel->howto = &nlm32_sparc_howto_table[index]; |
| 152 | break; |
| 153 | } |
| 154 | |
| 155 | #ifdef DEBUG |
| 156 | fprintf (stderr, "%s: address = %08lx, addend = %08lx, type = %d, howto = %08lx\n", |
| 157 | __FUNCTION__, rel->address, rel->addend, type, rel->howto); |
| 158 | #endif |
| 159 | return true; |
| 160 | |
| 161 | } |
| 162 | |
| 163 | /* Write a NetWare sparc reloc. */ |
| 164 | |
| 165 | static boolean |
| 166 | nlm_sparc_write_reloc (abfd, sec, rel) |
| 167 | bfd *abfd; |
| 168 | asection *sec; |
| 169 | arelent *rel; |
| 170 | { |
| 171 | bfd_vma val; |
| 172 | struct nlm32_sparc_reloc_ext tmp_reloc; |
| 173 | int index; |
| 174 | int type = -1; |
| 175 | reloc_howto_type *tmp; |
| 176 | |
| 177 | |
| 178 | for (index = 0; |
| 179 | index < sizeof (nlm32_sparc_howto_table) / sizeof(reloc_howto_type); |
| 180 | index++) { |
| 181 | tmp = &nlm32_sparc_howto_table[index]; |
| 182 | |
| 183 | if (tmp->rightshift == rel->howto->rightshift |
| 184 | && tmp->size == rel->howto->size |
| 185 | && tmp->bitsize == rel->howto->bitsize |
| 186 | && tmp->pc_relative == rel->howto->pc_relative |
| 187 | && tmp->bitpos == rel->howto->bitpos |
| 188 | && tmp->src_mask == rel->howto->src_mask |
| 189 | && tmp->dst_mask == rel->howto->dst_mask) { |
| 190 | type = tmp->type; |
| 191 | break; |
| 192 | } |
| 193 | } |
| 194 | if (type == -1) |
| 195 | abort(); |
| 196 | |
| 197 | /* |
| 198 | * Netware wants a list of relocs for each address. |
| 199 | * Format is: |
| 200 | * long offset |
| 201 | * long addend |
| 202 | * char type |
| 203 | * That should be it. |
| 204 | */ |
| 205 | |
| 206 | /* The value we write out is the offset into the appropriate |
| 207 | segment. This offset is the section vma, adjusted by the vma of |
| 208 | the lowest section in that segment, plus the address of the |
| 209 | relocation. */ |
| 210 | #if 0 |
| 211 | val = bfd_get_section_vma (abfd, (*rel->sym_ptr_ptr)->section) + rel->address; |
| 212 | #else |
| 213 | val = bfd_get_section_vma (abfd, sec) + rel->address; |
| 214 | #endif |
| 215 | |
| 216 | #ifdef DEBUG |
| 217 | fprintf (stderr, "%s: val = %08lx, addend = %08lx, type = %d\n", |
| 218 | __FUNCTION__, val, rel->addend, rel->howto->type); |
| 219 | #endif |
| 220 | bfd_put_32 (abfd, val, tmp_reloc.offset); |
| 221 | bfd_put_32 (abfd, rel->addend, tmp_reloc.addend); |
| 222 | bfd_put_8 (abfd, (short)(rel->howto->type), tmp_reloc.type); |
| 223 | |
| 224 | if (bfd_write (&tmp_reloc, 12, 1, abfd) != 12) |
| 225 | { |
| 226 | abort(); |
| 227 | } |
| 228 | |
| 229 | return true; |
| 230 | } |
| 231 | |
| 232 | /* Mangle relocs for SPARC NetWare. We can just use the standard |
| 233 | SPARC relocs. */ |
| 234 | |
| 235 | static boolean |
| 236 | nlm_sparc_mangle_relocs (abfd, sec, data, offset, count) |
| 237 | bfd *abfd; |
| 238 | asection *sec; |
| 239 | PTR data; |
| 240 | bfd_vma offset; |
| 241 | bfd_size_type count; |
| 242 | { |
| 243 | return true; |
| 244 | } |
| 245 | |
| 246 | /* Read a NetWare sparc import record */ |
| 247 | static boolean |
| 248 | nlm_sparc_read_import (abfd, sym) |
| 249 | bfd *abfd; |
| 250 | nlmNAME(symbol_type) *sym; |
| 251 | { |
| 252 | struct nlm_relent *nlm_relocs; /* relocation records for symbol */ |
| 253 | bfd_size_type rcount; /* number of relocs */ |
| 254 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* temporary 32-bit value */ |
| 255 | unsigned char symlength; /* length of symbol name */ |
| 256 | char *name; |
| 257 | |
| 258 | /* |
| 259 | * First, read in the number of relocation |
| 260 | * entries for this symbol |
| 261 | */ |
| 262 | if (bfd_read ((PTR) temp, 4, 1, abfd) != 4) |
| 263 | return false; |
| 264 | |
| 265 | rcount = bfd_get_32 (abfd, temp); |
| 266 | |
| 267 | /* |
| 268 | * Next, read in the length of the symbol |
| 269 | */ |
| 270 | |
| 271 | if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd) |
| 272 | != sizeof (symlength)) |
| 273 | return false; |
| 274 | sym -> symbol.the_bfd = abfd; |
| 275 | name = bfd_alloc (abfd, symlength + 1); |
| 276 | if (name == NULL) |
| 277 | { |
| 278 | bfd_set_error (bfd_error_no_memory); |
| 279 | return false; |
| 280 | } |
| 281 | |
| 282 | /* |
| 283 | * Then read in the symbol |
| 284 | */ |
| 285 | |
| 286 | if (bfd_read (name, symlength, 1, abfd) != symlength) |
| 287 | return false; |
| 288 | name[symlength] = '\0'; |
| 289 | sym -> symbol.name = name; |
| 290 | sym -> symbol.flags = 0; |
| 291 | sym -> symbol.value = 0; |
| 292 | sym -> symbol.section = &bfd_und_section; |
| 293 | |
| 294 | /* |
| 295 | * Next, start reading in the relocs. |
| 296 | */ |
| 297 | |
| 298 | nlm_relocs = ((struct nlm_relent *) |
| 299 | bfd_alloc (abfd, rcount * sizeof (struct nlm_relent))); |
| 300 | if (!nlm_relocs) |
| 301 | { |
| 302 | bfd_set_error (bfd_error_no_memory); |
| 303 | return false; |
| 304 | } |
| 305 | sym -> relocs = nlm_relocs; |
| 306 | sym -> rcnt = 0; |
| 307 | while (sym -> rcnt < rcount) |
| 308 | { |
| 309 | asection *section; |
| 310 | |
| 311 | if (nlm_sparc_read_reloc (abfd, sym, §ion, |
| 312 | &nlm_relocs -> reloc) |
| 313 | == false) |
| 314 | return false; |
| 315 | nlm_relocs -> section = section; |
| 316 | nlm_relocs++; |
| 317 | sym -> rcnt++; |
| 318 | } |
| 319 | return true; |
| 320 | } |
| 321 | |
| 322 | static boolean |
| 323 | nlm_sparc_write_import (abfd, sec, rel) |
| 324 | bfd *abfd; |
| 325 | asection *sec; |
| 326 | arelent *rel; |
| 327 | { |
| 328 | char temp[4]; |
| 329 | asection *code, *data, *bss, *symsec; |
| 330 | bfd_vma base; |
| 331 | |
| 332 | code = bfd_get_section_by_name (abfd, NLM_CODE_NAME); |
| 333 | data = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); |
| 334 | bss = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); |
| 335 | symsec = (*rel->sym_ptr_ptr)->section; |
| 336 | |
| 337 | if (symsec == code) { |
| 338 | base = 0; |
| 339 | } else if (symsec == data) { |
| 340 | base = bfd_section_size (abfd, code); |
| 341 | } else if (symsec == bss) { |
| 342 | base = bfd_section_size (abfd, code) + bfd_section_size (abfd, data); |
| 343 | } else |
| 344 | base = 0; |
| 345 | |
| 346 | #ifdef DEBUG |
| 347 | fprintf (stderr, "%s: <%x, 1>\n\t", |
| 348 | __FUNCTION__, base + (*rel->sym_ptr_ptr)->value); |
| 349 | #endif |
| 350 | bfd_put_32 (abfd, base + (*rel->sym_ptr_ptr)->value, temp); |
| 351 | bfd_write ((PTR)temp, 4, 1, abfd); |
| 352 | bfd_put_32 (abfd, 1, temp); |
| 353 | bfd_write ((PTR)temp, 4, 1, abfd); |
| 354 | if (nlm_sparc_write_reloc (abfd, sec, rel) == false) |
| 355 | return false; |
| 356 | return true; |
| 357 | } |
| 358 | |
| 359 | /* Write out an external reference. */ |
| 360 | |
| 361 | static boolean |
| 362 | nlm_sparc_write_external (abfd, count, sym, relocs) |
| 363 | bfd *abfd; |
| 364 | bfd_size_type count; |
| 365 | asymbol *sym; |
| 366 | struct reloc_and_sec *relocs; |
| 367 | { |
| 368 | int i; |
| 369 | bfd_byte len; |
| 370 | unsigned char temp[NLM_TARGET_LONG_SIZE]; |
| 371 | |
| 372 | bfd_put_32 (abfd, count, temp); |
| 373 | if (bfd_write (temp, sizeof(temp), 1, abfd) != sizeof (temp)) |
| 374 | return false; |
| 375 | |
| 376 | len = strlen (sym->name); |
| 377 | if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) != sizeof(bfd_byte)) |
| 378 | || bfd_write (sym->name, len, 1, abfd) != len) |
| 379 | return false; |
| 380 | |
| 381 | for (i = 0; i < count; i++) |
| 382 | { |
| 383 | if (nlm_sparc_write_reloc (abfd, relocs[i].sec, |
| 384 | relocs[i].rel) == false) |
| 385 | return false; |
| 386 | } |
| 387 | |
| 388 | return true; |
| 389 | } |
| 390 | |
| 391 | static boolean |
| 392 | nlm_sparc_write_export (abfd, sym, value) |
| 393 | bfd *abfd; |
| 394 | asymbol *sym; |
| 395 | bfd_vma value; |
| 396 | { |
| 397 | bfd_byte len; |
| 398 | bfd_byte temp[4]; |
| 399 | |
| 400 | #ifdef DEBUG |
| 401 | fprintf (stderr, "%s: <%x, %d, %s>\n", |
| 402 | __FUNCTION__, value, strlen (sym->name), sym->name); |
| 403 | #endif |
| 404 | bfd_put_32 (abfd, value, temp); |
| 405 | len = strlen (sym->name); |
| 406 | |
| 407 | if (bfd_write (temp, 4, 1, abfd) != 4 |
| 408 | || bfd_write (&len, 1, 1, abfd) != 1 |
| 409 | || bfd_write (sym->name, len, 1, abfd) != len) |
| 410 | return false; |
| 411 | |
| 412 | return true; |
| 413 | } |
| 414 | |
| 415 | #undef nlm_swap_fixed_header_in |
| 416 | #undef nlm_swap_fixed_header_out |
| 417 | |
| 418 | #include "nlmswap.h" |
| 419 | |
| 420 | static const struct nlm_backend_data nlm32_sparc_backend = |
| 421 | { |
| 422 | "NetWare SPARC Module \032", |
| 423 | sizeof (Nlm32_sparc_External_Fixed_Header), |
| 424 | 0, /* optional_prefix_size */ |
| 425 | bfd_arch_sparc, |
| 426 | 0, |
| 427 | false, |
| 428 | 0, /* backend_object_p */ |
| 429 | 0, /* write_prefix_func */ |
| 430 | nlm_sparc_read_reloc, |
| 431 | nlm_sparc_mangle_relocs, |
| 432 | nlm_sparc_read_import, |
| 433 | nlm_sparc_write_import, |
| 434 | 0, /* set_public_section */ |
| 435 | 0, /* get_public_offset */ |
| 436 | nlm_swap_fixed_header_in, |
| 437 | nlm_swap_fixed_header_out, |
| 438 | nlm_sparc_write_external, |
| 439 | nlm_sparc_write_export |
| 440 | }; |
| 441 | |
| 442 | #define TARGET_BIG_NAME "nlm32-sparc" |
| 443 | #define TARGET_BIG_SYM nlmNAME(sparc_vec) |
| 444 | #define TARGET_BACKEND_DATA &nlm32_sparc_backend |
| 445 | |
| 446 | #include "nlm-target.h" |