| 1 | /* This file is is generated by a shell script. DO NOT EDIT! */ |
| 2 | |
| 3 | /* Handle embedded relocs for MIPS. |
| 4 | Copyright 1994, 1997, 2000 Free Software Foundation, Inc. |
| 5 | Written by Ian Lance Taylor <ian@cygnus.com> based on generic.em. |
| 6 | |
| 7 | This file is part of GLD, the Gnu Linker. |
| 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | #define TARGET_IS_mipsidt |
| 24 | |
| 25 | #include "libiberty.h" |
| 26 | #include "bfd.h" |
| 27 | #include "sysdep.h" |
| 28 | #include "bfdlink.h" |
| 29 | |
| 30 | #include "ld.h" |
| 31 | #include "ldmain.h" |
| 32 | #include "ldmisc.h" |
| 33 | |
| 34 | #include "ldexp.h" |
| 35 | #include "ldlang.h" |
| 36 | #include "ldfile.h" |
| 37 | #include "ldemul.h" |
| 38 | |
| 39 | static void gldmipsidt_before_parse PARAMS ((void)); |
| 40 | static void gldmipsidt_after_open PARAMS ((void)); |
| 41 | static void check_sections PARAMS ((bfd *, asection *, PTR)); |
| 42 | static void gldmipsidt_after_allocation PARAMS ((void)); |
| 43 | static char *gldmipsidt_get_script PARAMS ((int *isfile)); |
| 44 | |
| 45 | static void |
| 46 | gldmipsidt_before_parse() |
| 47 | { |
| 48 | #ifndef TARGET_ /* I.e., if not generic. */ |
| 49 | ldfile_output_architecture = bfd_arch_mips; |
| 50 | #endif /* not TARGET_ */ |
| 51 | } |
| 52 | |
| 53 | /* This function is run after all the input files have been opened. |
| 54 | We create a .rel.sdata section for each input file with a non zero |
| 55 | .sdata section. The BFD backend will fill in these sections with |
| 56 | magic numbers which can be used to relocate the data section at run |
| 57 | time. This will only do the right thing if all the input files |
| 58 | have been compiled using -membedded-pic. */ |
| 59 | |
| 60 | static void |
| 61 | gldmipsidt_after_open () |
| 62 | { |
| 63 | bfd *abfd; |
| 64 | |
| 65 | if (! command_line.embedded_relocs |
| 66 | || link_info.relocateable) |
| 67 | return; |
| 68 | |
| 69 | for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) |
| 70 | { |
| 71 | asection *datasec; |
| 72 | |
| 73 | datasec = bfd_get_section_by_name (abfd, ".sdata"); |
| 74 | |
| 75 | /* Note that we assume that the reloc_count field has already |
| 76 | been set up. We could call bfd_get_reloc_upper_bound, but |
| 77 | that returns the size of a memory buffer rather than a reloc |
| 78 | count. We do not want to call bfd_canonicalize_reloc, |
| 79 | because although it would always work it would force us to |
| 80 | read in the relocs into BFD canonical form, which would waste |
| 81 | a significant amount of time and memory. */ |
| 82 | if (datasec != NULL && datasec->reloc_count > 0) |
| 83 | { |
| 84 | asection *relsec; |
| 85 | |
| 86 | relsec = bfd_make_section (abfd, ".rel.sdata"); |
| 87 | if (relsec == NULL |
| 88 | || ! bfd_set_section_flags (abfd, relsec, |
| 89 | (SEC_ALLOC |
| 90 | | SEC_LOAD |
| 91 | | SEC_HAS_CONTENTS |
| 92 | | SEC_IN_MEMORY)) |
| 93 | || ! bfd_set_section_alignment (abfd, relsec, 2) |
| 94 | || ! bfd_set_section_size (abfd, relsec, |
| 95 | datasec->reloc_count * 4)) |
| 96 | einfo (_("%F%B: can not create .rel.sdata section: %E\n")); |
| 97 | } |
| 98 | |
| 99 | /* Double check that all other data sections are empty, as is |
| 100 | required for embedded PIC code. */ |
| 101 | bfd_map_over_sections (abfd, check_sections, (PTR) datasec); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | /* Check that of the data sections, only the .sdata section has |
| 106 | relocs. This is called via bfd_map_over_sections. */ |
| 107 | |
| 108 | static void |
| 109 | check_sections (abfd, sec, sdatasec) |
| 110 | bfd *abfd; |
| 111 | asection *sec; |
| 112 | PTR sdatasec; |
| 113 | { |
| 114 | if ((bfd_get_section_flags (abfd, sec) & SEC_CODE) == 0 |
| 115 | && sec != (asection *) sdatasec |
| 116 | && sec->reloc_count != 0) |
| 117 | einfo (_("%F%X: section %s has relocs; can not use --embedded-relocs\n"), |
| 118 | abfd, bfd_get_section_name (abfd, sec)); |
| 119 | } |
| 120 | |
| 121 | /* This function is called after the section sizes and offsets have |
| 122 | been set. If we are generating embedded relocs, it calls a special |
| 123 | BFD backend routine to do the work. */ |
| 124 | |
| 125 | static void |
| 126 | gldmipsidt_after_allocation () |
| 127 | { |
| 128 | bfd *abfd; |
| 129 | |
| 130 | if (! command_line.embedded_relocs |
| 131 | || link_info.relocateable) |
| 132 | return; |
| 133 | |
| 134 | for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) |
| 135 | { |
| 136 | asection *datasec, *relsec; |
| 137 | char *errmsg; |
| 138 | |
| 139 | datasec = bfd_get_section_by_name (abfd, ".sdata"); |
| 140 | |
| 141 | if (datasec == NULL || datasec->reloc_count == 0) |
| 142 | continue; |
| 143 | |
| 144 | relsec = bfd_get_section_by_name (abfd, ".rel.sdata"); |
| 145 | ASSERT (relsec != NULL); |
| 146 | |
| 147 | if (! bfd_mips_ecoff_create_embedded_relocs (abfd, &link_info, |
| 148 | datasec, relsec, |
| 149 | &errmsg)) |
| 150 | { |
| 151 | if (errmsg == NULL) |
| 152 | einfo (_("%B%X: can not create runtime reloc information: %E\n"), |
| 153 | abfd); |
| 154 | else |
| 155 | einfo (_("%X%B: can not create runtime reloc information: %s\n"), |
| 156 | abfd, errmsg); |
| 157 | } |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | static char * |
| 162 | gldmipsidt_get_script(isfile) |
| 163 | int *isfile; |
| 164 | { |
| 165 | *isfile = 0; |
| 166 | |
| 167 | if (link_info.relocateable == true && config.build_constructors == true) |
| 168 | return |
| 169 | concat( |
| 170 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ |
| 171 | \"ecoff-littlemips\")\n\ |
| 172 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ |
| 173 | ENTRY(start)\n\ |
| 174 | SECTIONS\n\ |
| 175 | {\n\ |
| 176 | .text : {\n\ |
| 177 | ;\n\ |
| 178 | *(.init)\n\ |
| 179 | ;\n\ |
| 180 | *(.text)\n\ |
| 181 | *(.rel.sdata)\n\ |
| 182 | *(.fini)\n\ |
| 183 | ;\n\ |
| 184 | ;\n\ |
| 185 | }\n\ |
| 186 | "," .rdata : {\n\ |
| 187 | *(.rdata)\n\ |
| 188 | }\n\ |
| 189 | .data : {\n\ |
| 190 | *(.data)\n\ |
| 191 | CONSTRUCTORS\n\ |
| 192 | }\n\ |
| 193 | .lit8 : {\n\ |
| 194 | *(.lit8)\n\ |
| 195 | }\n\ |
| 196 | .lit4 : {\n\ |
| 197 | *(.lit4)\n\ |
| 198 | }\n\ |
| 199 | "," .sdata : {\n\ |
| 200 | *(.sdata)\n\ |
| 201 | }\n\ |
| 202 | .sbss : {\n\ |
| 203 | *(.sbss)\n\ |
| 204 | *(.scommon)\n\ |
| 205 | }\n\ |
| 206 | .bss : {\n\ |
| 207 | *(.bss)\n\ |
| 208 | *(COMMON)\n\ |
| 209 | }\n\ |
| 210 | }\n\n", NULL) |
| 211 | ; else if (link_info.relocateable == true) return |
| 212 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ |
| 213 | \"ecoff-littlemips\")\n\ |
| 214 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ |
| 215 | ENTRY(start)\n\ |
| 216 | SECTIONS\n\ |
| 217 | {\n\ |
| 218 | .text : {\n\ |
| 219 | ;\n\ |
| 220 | *(.init)\n\ |
| 221 | ;\n\ |
| 222 | *(.text)\n\ |
| 223 | *(.rel.sdata)\n\ |
| 224 | *(.fini)\n\ |
| 225 | ;\n\ |
| 226 | ;\n\ |
| 227 | }\n\ |
| 228 | .rdata : {\n\ |
| 229 | *(.rdata)\n\ |
| 230 | }\n\ |
| 231 | .data : {\n\ |
| 232 | *(.data)\n\ |
| 233 | }\n\ |
| 234 | .lit8 : {\n\ |
| 235 | *(.lit8)\n\ |
| 236 | }\n\ |
| 237 | .lit4 : {\n\ |
| 238 | *(.lit4)\n\ |
| 239 | }\n\ |
| 240 | .sdata : {\n\ |
| 241 | *(.sdata)\n\ |
| 242 | }\n\ |
| 243 | .sbss : {\n\ |
| 244 | *(.sbss)\n\ |
| 245 | *(.scommon)\n\ |
| 246 | }\n\ |
| 247 | .bss : {\n\ |
| 248 | *(.bss)\n\ |
| 249 | *(COMMON)\n\ |
| 250 | }\n\ |
| 251 | }\n\n" |
| 252 | ; else if (!config.text_read_only) return |
| 253 | concat( |
| 254 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ |
| 255 | \"ecoff-littlemips\")\n\ |
| 256 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ |
| 257 | ENTRY(start)\n\ |
| 258 | SECTIONS\n\ |
| 259 | {\n\ |
| 260 | . = 0xa0012000;\n\ |
| 261 | .text : {\n\ |
| 262 | _ftext = . ;\n\ |
| 263 | *(.init)\n\ |
| 264 | eprol = .;\n\ |
| 265 | *(.text)\n\ |
| 266 | PROVIDE (__runtime_reloc_start = .);\n\ |
| 267 | *(.rel.sdata)\n\ |
| 268 | PROVIDE (__runtime_reloc_stop = .);\n\ |
| 269 | *(.fini)\n\ |
| 270 | etext = .;\n\ |
| 271 | _etext = .;\n\ |
| 272 | "," }\n\ |
| 273 | . = .;\n\ |
| 274 | .rdata : {\n\ |
| 275 | *(.rdata)\n\ |
| 276 | }\n\ |
| 277 | _fdata = ALIGN(16);\n\ |
| 278 | .data : {\n\ |
| 279 | *(.data)\n\ |
| 280 | CONSTRUCTORS\n\ |
| 281 | }\n\ |
| 282 | _gp = ALIGN(16) + 0x8000;\n\ |
| 283 | .lit8 : {\n\ |
| 284 | *(.lit8)\n\ |
| 285 | }\n\ |
| 286 | .lit4 : {\n\ |
| 287 | *(.lit4)\n\ |
| 288 | }\n\ |
| 289 | .sdata : {\n\ |
| 290 | *(.sdata)\n\ |
| 291 | }\n\ |
| 292 | "," edata = .;\n\ |
| 293 | _edata = .;\n\ |
| 294 | _fbss = .;\n\ |
| 295 | .sbss : {\n\ |
| 296 | *(.sbss)\n\ |
| 297 | *(.scommon)\n\ |
| 298 | }\n\ |
| 299 | .bss : {\n\ |
| 300 | *(.bss)\n\ |
| 301 | *(COMMON)\n\ |
| 302 | }\n\ |
| 303 | end = .;\n\ |
| 304 | _end = .;\n\ |
| 305 | }\n\n" |
| 306 | , NULL) |
| 307 | ; else if (!config.magic_demand_paged) return |
| 308 | concat ( |
| 309 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ |
| 310 | \"ecoff-littlemips\")\n\ |
| 311 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ |
| 312 | ENTRY(start)\n\ |
| 313 | SECTIONS\n\ |
| 314 | {\n\ |
| 315 | . = 0xa0012000;\n\ |
| 316 | .text : {\n\ |
| 317 | _ftext = . ;\n\ |
| 318 | *(.init)\n\ |
| 319 | eprol = .;\n\ |
| 320 | *(.text)\n\ |
| 321 | PROVIDE (__runtime_reloc_start = .);\n\ |
| 322 | *(.rel.sdata)\n\ |
| 323 | PROVIDE (__runtime_reloc_stop = .);\n\ |
| 324 | *(.fini)\n\ |
| 325 | etext = .;\n\ |
| 326 | _etext = .;\n\ |
| 327 | "," }\n\ |
| 328 | . = .;\n\ |
| 329 | .rdata : {\n\ |
| 330 | *(.rdata)\n\ |
| 331 | }\n\ |
| 332 | _fdata = ALIGN(16);\n\ |
| 333 | .data : {\n\ |
| 334 | *(.data)\n\ |
| 335 | CONSTRUCTORS\n\ |
| 336 | }\n\ |
| 337 | _gp = ALIGN(16) + 0x8000;\n\ |
| 338 | .lit8 : {\n\ |
| 339 | *(.lit8)\n\ |
| 340 | "," }\n\ |
| 341 | .lit4 : {\n\ |
| 342 | *(.lit4)\n\ |
| 343 | }\n\ |
| 344 | .sdata : {\n\ |
| 345 | *(.sdata)\n\ |
| 346 | }\n\ |
| 347 | edata = .;\n\ |
| 348 | _edata = .;\n\ |
| 349 | _fbss = .;\n\ |
| 350 | .sbss : {\n\ |
| 351 | *(.sbss)\n\ |
| 352 | *(.scommon)\n\ |
| 353 | "," }\n\ |
| 354 | .bss : {\n\ |
| 355 | *(.bss)\n\ |
| 356 | *(COMMON)\n\ |
| 357 | }\n\ |
| 358 | end = .;\n\ |
| 359 | _end = .;\n\ |
| 360 | }\n\n" |
| 361 | , NULL) |
| 362 | ; else return |
| 363 | concat ( |
| 364 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ |
| 365 | \"ecoff-littlemips\")\n\ |
| 366 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ |
| 367 | ENTRY(start)\n\ |
| 368 | SECTIONS\n\ |
| 369 | {\n\ |
| 370 | . = 0xa0012000;\n\ |
| 371 | .text : {\n\ |
| 372 | _ftext = . ;\n\ |
| 373 | *(.init)\n\ |
| 374 | eprol = .;\n\ |
| 375 | *(.text)\n\ |
| 376 | PROVIDE (__runtime_reloc_start = .);\n\ |
| 377 | *(.rel.sdata)\n\ |
| 378 | PROVIDE (__runtime_reloc_stop = .);\n\ |
| 379 | *(.fini)\n\ |
| 380 | etext = .;\n\ |
| 381 | _etext = .;\n\ |
| 382 | "," }\n\ |
| 383 | . = .;\n\ |
| 384 | .rdata : {\n\ |
| 385 | *(.rdata)\n\ |
| 386 | }\n\ |
| 387 | _fdata = ALIGN(16);\n\ |
| 388 | .data : {\n\ |
| 389 | *(.data)\n\ |
| 390 | CONSTRUCTORS\n\ |
| 391 | }\n\ |
| 392 | _gp = ALIGN(16) + 0x8000;\n\ |
| 393 | .lit8 : {\n\ |
| 394 | *(.lit8)\n\ |
| 395 | }\n\ |
| 396 | .lit4 : {\n\ |
| 397 | *(.lit4)\n\ |
| 398 | "," }\n\ |
| 399 | .sdata : {\n\ |
| 400 | *(.sdata)\n\ |
| 401 | }\n\ |
| 402 | edata = .;\n\ |
| 403 | _edata = .;\n\ |
| 404 | _fbss = .;\n\ |
| 405 | .sbss : {\n\ |
| 406 | *(.sbss)\n\ |
| 407 | *(.scommon)\n\ |
| 408 | }\n\ |
| 409 | .bss : {\n\ |
| 410 | *(.bss)\n\ |
| 411 | *(COMMON)\n\ |
| 412 | }\n\ |
| 413 | end = .;\n\ |
| 414 | _end = .;\n\ |
| 415 | }\n\n" |
| 416 | , NULL) |
| 417 | ; } |
| 418 | |
| 419 | struct ld_emulation_xfer_struct ld_mipsidt_emulation = |
| 420 | { |
| 421 | gldmipsidt_before_parse, |
| 422 | syslib_default, |
| 423 | hll_default, |
| 424 | after_parse_default, |
| 425 | gldmipsidt_after_open, |
| 426 | gldmipsidt_after_allocation, |
| 427 | set_output_arch_default, |
| 428 | ldemul_default_target, |
| 429 | before_allocation_default, |
| 430 | gldmipsidt_get_script, |
| 431 | "mipsidt", |
| 432 | "ecoff-bigmips" |
| 433 | }; |