| 1 | /* tc-frv.c -- Assembler for the Fujitsu FRV. |
| 2 | Copyright 2002, 2003, 2004, 2005, 2006, 2007 |
| 3 | Free Software Foundation. Inc. |
| 4 | |
| 5 | This file is part of GAS, the GNU Assembler. |
| 6 | |
| 7 | GAS 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 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GAS 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 GAS; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "as.h" |
| 23 | #include "subsegs.h" |
| 24 | #include "symcat.h" |
| 25 | #include "opcodes/frv-desc.h" |
| 26 | #include "opcodes/frv-opc.h" |
| 27 | #include "cgen.h" |
| 28 | #include "libbfd.h" |
| 29 | #include "elf/common.h" |
| 30 | #include "elf/frv.h" |
| 31 | |
| 32 | /* Structure to hold all of the different components describing |
| 33 | an individual instruction. */ |
| 34 | typedef struct |
| 35 | { |
| 36 | const CGEN_INSN * insn; |
| 37 | const CGEN_INSN * orig_insn; |
| 38 | CGEN_FIELDS fields; |
| 39 | #if CGEN_INT_INSN_P |
| 40 | CGEN_INSN_INT buffer [1]; |
| 41 | #define INSN_VALUE(buf) (*(buf)) |
| 42 | #else |
| 43 | unsigned char buffer [CGEN_MAX_INSN_SIZE]; |
| 44 | #define INSN_VALUE(buf) (buf) |
| 45 | #endif |
| 46 | char * addr; |
| 47 | fragS * frag; |
| 48 | int num_fixups; |
| 49 | fixS * fixups [GAS_CGEN_MAX_FIXUPS]; |
| 50 | int indices [MAX_OPERAND_INSTANCES]; |
| 51 | } |
| 52 | frv_insn; |
| 53 | |
| 54 | enum vliw_insn_type |
| 55 | { |
| 56 | VLIW_GENERIC_TYPE, /* Don't care about this insn. */ |
| 57 | VLIW_BRANCH_TYPE, /* A Branch. */ |
| 58 | VLIW_LABEL_TYPE, /* A Label. */ |
| 59 | VLIW_NOP_TYPE, /* A NOP. */ |
| 60 | VLIW_BRANCH_HAS_NOPS /* A Branch that requires NOPS. */ |
| 61 | }; |
| 62 | |
| 63 | /* We're going to use these in the fr_subtype field to mark |
| 64 | whether to keep inserted nops. */ |
| 65 | |
| 66 | #define NOP_KEEP 1 /* Keep these NOPS. */ |
| 67 | #define NOP_DELETE 2 /* Delete these NOPS. */ |
| 68 | |
| 69 | #define DO_COUNT TRUE |
| 70 | #define DONT_COUNT FALSE |
| 71 | |
| 72 | /* A list of insns within a VLIW insn. */ |
| 73 | struct vliw_insn_list |
| 74 | { |
| 75 | /* The type of this insn. */ |
| 76 | enum vliw_insn_type type; |
| 77 | |
| 78 | /* The corresponding gas insn information. */ |
| 79 | const CGEN_INSN *insn; |
| 80 | |
| 81 | /* For branches and labels, the symbol that is referenced. */ |
| 82 | symbolS *sym; |
| 83 | |
| 84 | /* For branches, the frag containing the single nop that was generated. */ |
| 85 | fragS *snop_frag; |
| 86 | |
| 87 | /* For branches, the frag containing the double nop that was generated. */ |
| 88 | fragS *dnop_frag; |
| 89 | |
| 90 | /* Pointer to raw data for this insn. */ |
| 91 | char *address; |
| 92 | |
| 93 | /* Next insn in list. */ |
| 94 | struct vliw_insn_list *next; |
| 95 | }; |
| 96 | |
| 97 | static struct vliw_insn_list single_nop_insn = { |
| 98 | VLIW_NOP_TYPE, NULL, NULL, NULL, NULL, NULL, NULL }; |
| 99 | |
| 100 | static struct vliw_insn_list double_nop_insn = { |
| 101 | VLIW_NOP_TYPE, NULL, NULL, NULL, NULL, NULL, NULL }; |
| 102 | |
| 103 | struct vliw_chain |
| 104 | { |
| 105 | int num; |
| 106 | int insn_count; |
| 107 | struct vliw_insn_list *insn_list; |
| 108 | struct vliw_chain *next; |
| 109 | }; |
| 110 | |
| 111 | static struct vliw_chain *vliw_chain_top; |
| 112 | static struct vliw_chain *current_vliw_chain; |
| 113 | static struct vliw_chain *previous_vliw_chain; |
| 114 | static struct vliw_insn_list *current_vliw_insn; |
| 115 | |
| 116 | const char comment_chars[] = ";"; |
| 117 | const char line_comment_chars[] = "#"; |
| 118 | const char line_separator_chars[] = "!"; |
| 119 | const char EXP_CHARS[] = "eE"; |
| 120 | const char FLT_CHARS[] = "dD"; |
| 121 | |
| 122 | static FRV_VLIW vliw; |
| 123 | |
| 124 | /* Default machine */ |
| 125 | |
| 126 | #ifdef DEFAULT_CPU_FRV |
| 127 | #define DEFAULT_MACHINE bfd_mach_frv |
| 128 | #define DEFAULT_FLAGS EF_FRV_CPU_GENERIC |
| 129 | |
| 130 | #else |
| 131 | #ifdef DEFAULT_CPU_FR300 |
| 132 | #define DEFAULT_MACHINE bfd_mach_fr300 |
| 133 | #define DEFAULT_FLAGS EF_FRV_CPU_FR300 |
| 134 | |
| 135 | #else |
| 136 | #ifdef DEFAULT_CPU_SIMPLE |
| 137 | #define DEFAULT_MACHINE bfd_mach_frvsimple |
| 138 | #define DEFAULT_FLAGS EF_FRV_CPU_SIMPLE |
| 139 | |
| 140 | #else |
| 141 | #ifdef DEFAULT_CPU_TOMCAT |
| 142 | #define DEFAULT_MACHINE bfd_mach_frvtomcat |
| 143 | #define DEFAULT_FLAGS EF_FRV_CPU_TOMCAT |
| 144 | |
| 145 | #else |
| 146 | #ifdef DEFAULT_CPU_FR400 |
| 147 | #define DEFAULT_MACHINE bfd_mach_fr400 |
| 148 | #define DEFAULT_FLAGS EF_FRV_CPU_FR400 |
| 149 | |
| 150 | #else |
| 151 | #ifdef DEFAULT_CPU_FR550 |
| 152 | #define DEFAULT_MACHINE bfd_mach_fr550 |
| 153 | #define DEFAULT_FLAGS EF_FRV_CPU_FR550 |
| 154 | |
| 155 | #else |
| 156 | #define DEFAULT_MACHINE bfd_mach_fr500 |
| 157 | #define DEFAULT_FLAGS EF_FRV_CPU_FR500 |
| 158 | #endif |
| 159 | #endif |
| 160 | #endif |
| 161 | #endif |
| 162 | #endif |
| 163 | #endif |
| 164 | |
| 165 | #ifdef TE_LINUX |
| 166 | # define DEFAULT_FDPIC EF_FRV_FDPIC |
| 167 | #else |
| 168 | # define DEFAULT_FDPIC 0 |
| 169 | #endif |
| 170 | |
| 171 | static unsigned long frv_mach = bfd_mach_frv; |
| 172 | static bfd_boolean fr400_audio; |
| 173 | |
| 174 | /* Flags to set in the elf header */ |
| 175 | static flagword frv_flags = DEFAULT_FLAGS | DEFAULT_FDPIC; |
| 176 | |
| 177 | static int frv_user_set_flags_p = 0; |
| 178 | static int frv_pic_p = 0; |
| 179 | static const char *frv_pic_flag = DEFAULT_FDPIC ? "-mfdpic" : (const char *)0; |
| 180 | |
| 181 | /* Print tomcat-specific debugging info. */ |
| 182 | static int tomcat_debug = 0; |
| 183 | |
| 184 | /* Tomcat-specific NOP statistics. */ |
| 185 | static int tomcat_stats = 0; |
| 186 | static int tomcat_doubles = 0; |
| 187 | static int tomcat_singles = 0; |
| 188 | |
| 189 | /* Forward reference to static functions */ |
| 190 | static void frv_set_flags PARAMS ((int)); |
| 191 | static void frv_pic_ptr PARAMS ((int)); |
| 192 | static void frv_frob_file_section PARAMS ((bfd *, asection *, PTR)); |
| 193 | |
| 194 | /* The target specific pseudo-ops which we support. */ |
| 195 | const pseudo_typeS md_pseudo_table[] = |
| 196 | { |
| 197 | { "eflags", frv_set_flags, 0 }, |
| 198 | { "word", cons, 4 }, |
| 199 | { "picptr", frv_pic_ptr, 4 }, |
| 200 | { NULL, NULL, 0 } |
| 201 | }; |
| 202 | |
| 203 | \f |
| 204 | #define FRV_SHORTOPTS "G:" |
| 205 | const char * md_shortopts = FRV_SHORTOPTS; |
| 206 | |
| 207 | #define OPTION_GPR_32 (OPTION_MD_BASE) |
| 208 | #define OPTION_GPR_64 (OPTION_MD_BASE + 1) |
| 209 | #define OPTION_FPR_32 (OPTION_MD_BASE + 2) |
| 210 | #define OPTION_FPR_64 (OPTION_MD_BASE + 3) |
| 211 | #define OPTION_SOFT_FLOAT (OPTION_MD_BASE + 4) |
| 212 | #define OPTION_DWORD_YES (OPTION_MD_BASE + 5) |
| 213 | #define OPTION_DWORD_NO (OPTION_MD_BASE + 6) |
| 214 | #define OPTION_DOUBLE (OPTION_MD_BASE + 7) |
| 215 | #define OPTION_NO_DOUBLE (OPTION_MD_BASE + 8) |
| 216 | #define OPTION_MEDIA (OPTION_MD_BASE + 9) |
| 217 | #define OPTION_NO_MEDIA (OPTION_MD_BASE + 10) |
| 218 | #define OPTION_CPU (OPTION_MD_BASE + 11) |
| 219 | #define OPTION_PIC (OPTION_MD_BASE + 12) |
| 220 | #define OPTION_BIGPIC (OPTION_MD_BASE + 13) |
| 221 | #define OPTION_LIBPIC (OPTION_MD_BASE + 14) |
| 222 | #define OPTION_MULADD (OPTION_MD_BASE + 15) |
| 223 | #define OPTION_NO_MULADD (OPTION_MD_BASE + 16) |
| 224 | #define OPTION_TOMCAT_DEBUG (OPTION_MD_BASE + 17) |
| 225 | #define OPTION_TOMCAT_STATS (OPTION_MD_BASE + 18) |
| 226 | #define OPTION_PACK (OPTION_MD_BASE + 19) |
| 227 | #define OPTION_NO_PACK (OPTION_MD_BASE + 20) |
| 228 | #define OPTION_FDPIC (OPTION_MD_BASE + 21) |
| 229 | #define OPTION_NOPIC (OPTION_MD_BASE + 22) |
| 230 | |
| 231 | struct option md_longopts[] = |
| 232 | { |
| 233 | { "mgpr-32", no_argument, NULL, OPTION_GPR_32 }, |
| 234 | { "mgpr-64", no_argument, NULL, OPTION_GPR_64 }, |
| 235 | { "mfpr-32", no_argument, NULL, OPTION_FPR_32 }, |
| 236 | { "mfpr-64", no_argument, NULL, OPTION_FPR_64 }, |
| 237 | { "mhard-float", no_argument, NULL, OPTION_FPR_64 }, |
| 238 | { "msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT }, |
| 239 | { "mdword", no_argument, NULL, OPTION_DWORD_YES }, |
| 240 | { "mno-dword", no_argument, NULL, OPTION_DWORD_NO }, |
| 241 | { "mdouble", no_argument, NULL, OPTION_DOUBLE }, |
| 242 | { "mno-double", no_argument, NULL, OPTION_NO_DOUBLE }, |
| 243 | { "mmedia", no_argument, NULL, OPTION_MEDIA }, |
| 244 | { "mno-media", no_argument, NULL, OPTION_NO_MEDIA }, |
| 245 | { "mcpu", required_argument, NULL, OPTION_CPU }, |
| 246 | { "mpic", no_argument, NULL, OPTION_PIC }, |
| 247 | { "mPIC", no_argument, NULL, OPTION_BIGPIC }, |
| 248 | { "mlibrary-pic", no_argument, NULL, OPTION_LIBPIC }, |
| 249 | { "mmuladd", no_argument, NULL, OPTION_MULADD }, |
| 250 | { "mno-muladd", no_argument, NULL, OPTION_NO_MULADD }, |
| 251 | { "mtomcat-debug", no_argument, NULL, OPTION_TOMCAT_DEBUG }, |
| 252 | { "mtomcat-stats", no_argument, NULL, OPTION_TOMCAT_STATS }, |
| 253 | { "mpack", no_argument, NULL, OPTION_PACK }, |
| 254 | { "mno-pack", no_argument, NULL, OPTION_NO_PACK }, |
| 255 | { "mfdpic", no_argument, NULL, OPTION_FDPIC }, |
| 256 | { "mnopic", no_argument, NULL, OPTION_NOPIC }, |
| 257 | { NULL, no_argument, NULL, 0 }, |
| 258 | }; |
| 259 | |
| 260 | size_t md_longopts_size = sizeof (md_longopts); |
| 261 | |
| 262 | /* What value to give to bfd_set_gp_size. */ |
| 263 | static int g_switch_value = 8; |
| 264 | |
| 265 | int |
| 266 | md_parse_option (c, arg) |
| 267 | int c; |
| 268 | char * arg; |
| 269 | { |
| 270 | switch (c) |
| 271 | { |
| 272 | default: |
| 273 | return 0; |
| 274 | |
| 275 | case 'G': |
| 276 | g_switch_value = atoi (arg); |
| 277 | if (! g_switch_value) |
| 278 | frv_flags |= EF_FRV_G0; |
| 279 | break; |
| 280 | |
| 281 | case OPTION_GPR_32: |
| 282 | frv_flags = (frv_flags & ~EF_FRV_GPR_MASK) | EF_FRV_GPR_32; |
| 283 | break; |
| 284 | |
| 285 | case OPTION_GPR_64: |
| 286 | frv_flags = (frv_flags & ~EF_FRV_GPR_MASK) | EF_FRV_GPR_64; |
| 287 | break; |
| 288 | |
| 289 | case OPTION_FPR_32: |
| 290 | frv_flags = (frv_flags & ~EF_FRV_FPR_MASK) | EF_FRV_FPR_32; |
| 291 | break; |
| 292 | |
| 293 | case OPTION_FPR_64: |
| 294 | frv_flags = (frv_flags & ~EF_FRV_FPR_MASK) | EF_FRV_FPR_64; |
| 295 | break; |
| 296 | |
| 297 | case OPTION_SOFT_FLOAT: |
| 298 | frv_flags = (frv_flags & ~EF_FRV_FPR_MASK) | EF_FRV_FPR_NONE; |
| 299 | break; |
| 300 | |
| 301 | case OPTION_DWORD_YES: |
| 302 | frv_flags = (frv_flags & ~EF_FRV_DWORD_MASK) | EF_FRV_DWORD_YES; |
| 303 | break; |
| 304 | |
| 305 | case OPTION_DWORD_NO: |
| 306 | frv_flags = (frv_flags & ~EF_FRV_DWORD_MASK) | EF_FRV_DWORD_NO; |
| 307 | break; |
| 308 | |
| 309 | case OPTION_DOUBLE: |
| 310 | frv_flags |= EF_FRV_DOUBLE; |
| 311 | break; |
| 312 | |
| 313 | case OPTION_NO_DOUBLE: |
| 314 | frv_flags &= ~EF_FRV_DOUBLE; |
| 315 | break; |
| 316 | |
| 317 | case OPTION_MEDIA: |
| 318 | frv_flags |= EF_FRV_MEDIA; |
| 319 | break; |
| 320 | |
| 321 | case OPTION_NO_MEDIA: |
| 322 | frv_flags &= ~EF_FRV_MEDIA; |
| 323 | break; |
| 324 | |
| 325 | case OPTION_MULADD: |
| 326 | frv_flags |= EF_FRV_MULADD; |
| 327 | break; |
| 328 | |
| 329 | case OPTION_NO_MULADD: |
| 330 | frv_flags &= ~EF_FRV_MULADD; |
| 331 | break; |
| 332 | |
| 333 | case OPTION_PACK: |
| 334 | frv_flags &= ~EF_FRV_NOPACK; |
| 335 | break; |
| 336 | |
| 337 | case OPTION_NO_PACK: |
| 338 | frv_flags |= EF_FRV_NOPACK; |
| 339 | break; |
| 340 | |
| 341 | case OPTION_CPU: |
| 342 | { |
| 343 | char *p; |
| 344 | int cpu_flags = EF_FRV_CPU_GENERIC; |
| 345 | |
| 346 | /* Identify the processor type */ |
| 347 | p = arg; |
| 348 | if (strcmp (p, "frv") == 0) |
| 349 | { |
| 350 | cpu_flags = EF_FRV_CPU_GENERIC; |
| 351 | frv_mach = bfd_mach_frv; |
| 352 | } |
| 353 | |
| 354 | else if (strcmp (p, "fr500") == 0) |
| 355 | { |
| 356 | cpu_flags = EF_FRV_CPU_FR500; |
| 357 | frv_mach = bfd_mach_fr500; |
| 358 | } |
| 359 | |
| 360 | else if (strcmp (p, "fr550") == 0) |
| 361 | { |
| 362 | cpu_flags = EF_FRV_CPU_FR550; |
| 363 | frv_mach = bfd_mach_fr550; |
| 364 | } |
| 365 | |
| 366 | else if (strcmp (p, "fr450") == 0) |
| 367 | { |
| 368 | cpu_flags = EF_FRV_CPU_FR450; |
| 369 | frv_mach = bfd_mach_fr450; |
| 370 | } |
| 371 | |
| 372 | else if (strcmp (p, "fr405") == 0) |
| 373 | { |
| 374 | cpu_flags = EF_FRV_CPU_FR405; |
| 375 | frv_mach = bfd_mach_fr400; |
| 376 | fr400_audio = TRUE; |
| 377 | } |
| 378 | |
| 379 | else if (strcmp (p, "fr400") == 0) |
| 380 | { |
| 381 | cpu_flags = EF_FRV_CPU_FR400; |
| 382 | frv_mach = bfd_mach_fr400; |
| 383 | fr400_audio = FALSE; |
| 384 | } |
| 385 | |
| 386 | else if (strcmp (p, "fr300") == 0) |
| 387 | { |
| 388 | cpu_flags = EF_FRV_CPU_FR300; |
| 389 | frv_mach = bfd_mach_fr300; |
| 390 | } |
| 391 | |
| 392 | else if (strcmp (p, "simple") == 0) |
| 393 | { |
| 394 | cpu_flags = EF_FRV_CPU_SIMPLE; |
| 395 | frv_mach = bfd_mach_frvsimple; |
| 396 | frv_flags |= EF_FRV_NOPACK; |
| 397 | } |
| 398 | |
| 399 | else if (strcmp (p, "tomcat") == 0) |
| 400 | { |
| 401 | cpu_flags = EF_FRV_CPU_TOMCAT; |
| 402 | frv_mach = bfd_mach_frvtomcat; |
| 403 | } |
| 404 | |
| 405 | else |
| 406 | { |
| 407 | as_fatal (_("Unknown cpu -mcpu=%s"), arg); |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | frv_flags = (frv_flags & ~EF_FRV_CPU_MASK) | cpu_flags; |
| 412 | } |
| 413 | break; |
| 414 | |
| 415 | case OPTION_PIC: |
| 416 | frv_flags |= EF_FRV_PIC; |
| 417 | frv_pic_p = 1; |
| 418 | frv_pic_flag = "-fpic"; |
| 419 | break; |
| 420 | |
| 421 | case OPTION_BIGPIC: |
| 422 | frv_flags |= EF_FRV_BIGPIC; |
| 423 | frv_pic_p = 1; |
| 424 | frv_pic_flag = "-fPIC"; |
| 425 | break; |
| 426 | |
| 427 | case OPTION_LIBPIC: |
| 428 | frv_flags |= (EF_FRV_LIBPIC | EF_FRV_G0); |
| 429 | frv_pic_p = 1; |
| 430 | frv_pic_flag = "-mlibrary-pic"; |
| 431 | g_switch_value = 0; |
| 432 | break; |
| 433 | |
| 434 | case OPTION_FDPIC: |
| 435 | frv_flags |= EF_FRV_FDPIC; |
| 436 | frv_pic_flag = "-mfdpic"; |
| 437 | break; |
| 438 | |
| 439 | case OPTION_NOPIC: |
| 440 | frv_flags &= ~(EF_FRV_FDPIC | EF_FRV_PIC |
| 441 | | EF_FRV_BIGPIC | EF_FRV_LIBPIC); |
| 442 | frv_pic_flag = 0; |
| 443 | break; |
| 444 | |
| 445 | case OPTION_TOMCAT_DEBUG: |
| 446 | tomcat_debug = 1; |
| 447 | break; |
| 448 | |
| 449 | case OPTION_TOMCAT_STATS: |
| 450 | tomcat_stats = 1; |
| 451 | break; |
| 452 | } |
| 453 | |
| 454 | return 1; |
| 455 | } |
| 456 | |
| 457 | void |
| 458 | md_show_usage (FILE * stream) |
| 459 | { |
| 460 | fprintf (stream, _("FRV specific command line options:\n")); |
| 461 | fprintf (stream, _("-G n Put data <= n bytes in the small data area\n")); |
| 462 | fprintf (stream, _("-mgpr-32 Mark generated file as only using 32 GPRs\n")); |
| 463 | fprintf (stream, _("-mgpr-64 Mark generated file as using all 64 GPRs\n")); |
| 464 | fprintf (stream, _("-mfpr-32 Mark generated file as only using 32 FPRs\n")); |
| 465 | fprintf (stream, _("-mfpr-64 Mark generated file as using all 64 FPRs\n")); |
| 466 | fprintf (stream, _("-msoft-float Mark generated file as using software FP\n")); |
| 467 | fprintf (stream, _("-mdword Mark generated file as using a 8-byte stack alignment\n")); |
| 468 | fprintf (stream, _("-mno-dword Mark generated file as using a 4-byte stack alignment\n")); |
| 469 | fprintf (stream, _("-mdouble Mark generated file as using double precision FP insns\n")); |
| 470 | fprintf (stream, _("-mmedia Mark generated file as using media insns\n")); |
| 471 | fprintf (stream, _("-mmuladd Mark generated file as using multiply add/subtract insns\n")); |
| 472 | fprintf (stream, _("-mpack Allow instructions to be packed\n")); |
| 473 | fprintf (stream, _("-mno-pack Do not allow instructions to be packed\n")); |
| 474 | fprintf (stream, _("-mpic Mark generated file as using small position independent code\n")); |
| 475 | fprintf (stream, _("-mPIC Mark generated file as using large position independent code\n")); |
| 476 | fprintf (stream, _("-mlibrary-pic Mark generated file as using position indepedent code for libraries\n")); |
| 477 | fprintf (stream, _("-mfdpic Assemble for the FDPIC ABI\n")); |
| 478 | fprintf (stream, _("-mnopic Disable -mpic, -mPIC, -mlibrary-pic and -mfdpic\n")); |
| 479 | fprintf (stream, _("-mcpu={fr500|fr550|fr400|fr405|fr450|fr300|frv|simple|tomcat}\n")); |
| 480 | fprintf (stream, _(" Record the cpu type\n")); |
| 481 | fprintf (stream, _("-mtomcat-stats Print out stats for tomcat workarounds\n")); |
| 482 | fprintf (stream, _("-mtomcat-debug Debug tomcat workarounds\n")); |
| 483 | } |
| 484 | |
| 485 | \f |
| 486 | void |
| 487 | md_begin () |
| 488 | { |
| 489 | /* Initialize the `cgen' interface. */ |
| 490 | |
| 491 | /* Set the machine number and endian. */ |
| 492 | gas_cgen_cpu_desc = frv_cgen_cpu_open (CGEN_CPU_OPEN_MACHS, 0, |
| 493 | CGEN_CPU_OPEN_ENDIAN, |
| 494 | CGEN_ENDIAN_BIG, |
| 495 | CGEN_CPU_OPEN_END); |
| 496 | frv_cgen_init_asm (gas_cgen_cpu_desc); |
| 497 | |
| 498 | /* This is a callback from cgen to gas to parse operands. */ |
| 499 | cgen_set_parse_operand_fn (gas_cgen_cpu_desc, gas_cgen_parse_operand); |
| 500 | |
| 501 | /* Set the ELF flags if desired. */ |
| 502 | if (frv_flags) |
| 503 | bfd_set_private_flags (stdoutput, frv_flags); |
| 504 | |
| 505 | /* Set the machine type */ |
| 506 | bfd_default_set_arch_mach (stdoutput, bfd_arch_frv, frv_mach); |
| 507 | |
| 508 | /* Set up gp size so we can put local common items in .sbss */ |
| 509 | bfd_set_gp_size (stdoutput, g_switch_value); |
| 510 | |
| 511 | frv_vliw_reset (& vliw, frv_mach, frv_flags); |
| 512 | } |
| 513 | |
| 514 | bfd_boolean |
| 515 | frv_md_fdpic_enabled (void) |
| 516 | { |
| 517 | return (frv_flags & EF_FRV_FDPIC) != 0; |
| 518 | } |
| 519 | |
| 520 | int chain_num = 0; |
| 521 | |
| 522 | struct vliw_insn_list *frv_insert_vliw_insn PARAMS ((bfd_boolean)); |
| 523 | |
| 524 | struct vliw_insn_list * |
| 525 | frv_insert_vliw_insn (count) |
| 526 | bfd_boolean count; |
| 527 | { |
| 528 | struct vliw_insn_list *vliw_insn_list_entry; |
| 529 | struct vliw_chain *vliw_chain_entry; |
| 530 | |
| 531 | if (current_vliw_chain == NULL) |
| 532 | { |
| 533 | vliw_chain_entry = (struct vliw_chain *) xmalloc (sizeof (struct vliw_chain)); |
| 534 | vliw_chain_entry->insn_count = 0; |
| 535 | vliw_chain_entry->insn_list = NULL; |
| 536 | vliw_chain_entry->next = NULL; |
| 537 | vliw_chain_entry->num = chain_num++; |
| 538 | |
| 539 | if (!vliw_chain_top) |
| 540 | vliw_chain_top = vliw_chain_entry; |
| 541 | current_vliw_chain = vliw_chain_entry; |
| 542 | if (previous_vliw_chain) |
| 543 | previous_vliw_chain->next = vliw_chain_entry; |
| 544 | } |
| 545 | |
| 546 | vliw_insn_list_entry = (struct vliw_insn_list *) xmalloc (sizeof (struct vliw_insn_list)); |
| 547 | vliw_insn_list_entry->type = VLIW_GENERIC_TYPE; |
| 548 | vliw_insn_list_entry->insn = NULL; |
| 549 | vliw_insn_list_entry->sym = NULL; |
| 550 | vliw_insn_list_entry->snop_frag = NULL; |
| 551 | vliw_insn_list_entry->dnop_frag = NULL; |
| 552 | vliw_insn_list_entry->next = NULL; |
| 553 | |
| 554 | if (count) |
| 555 | current_vliw_chain->insn_count++; |
| 556 | |
| 557 | if (current_vliw_insn) |
| 558 | current_vliw_insn->next = vliw_insn_list_entry; |
| 559 | current_vliw_insn = vliw_insn_list_entry; |
| 560 | |
| 561 | if (!current_vliw_chain->insn_list) |
| 562 | current_vliw_chain->insn_list = current_vliw_insn; |
| 563 | |
| 564 | return vliw_insn_list_entry; |
| 565 | } |
| 566 | |
| 567 | /* Identify the following cases: |
| 568 | |
| 569 | 1) A VLIW insn that contains both a branch and the branch destination. |
| 570 | This requires the insertion of two vliw instructions before the |
| 571 | branch. The first consists of two nops. The second consists of |
| 572 | a single nop. |
| 573 | |
| 574 | 2) A single instruction VLIW insn which is the destination of a branch |
| 575 | that is in the next VLIW insn. This requires the insertion of a vliw |
| 576 | insn containing two nops before the branch. |
| 577 | |
| 578 | 3) A double instruction VLIW insn which contains the destination of a |
| 579 | branch that is in the next VLIW insn. This requires the insertion of |
| 580 | a VLIW insn containing a single nop before the branch. |
| 581 | |
| 582 | 4) A single instruction VLIW insn which contains branch destination (x), |
| 583 | followed by a single instruction VLIW insn which does not contain |
| 584 | the branch to (x), followed by a VLIW insn which does contain the branch |
| 585 | to (x). This requires the insertion of a VLIW insn containing a single |
| 586 | nop before the VLIW instruction containing the branch. |
| 587 | |
| 588 | */ |
| 589 | #define FRV_IS_NOP(insn) (insn.buffer[0] == FRV_NOP_PACK || insn.buffer[0] == FRV_NOP_NOPACK) |
| 590 | #define FRV_NOP_PACK 0x00880000 /* ori.p gr0,0,gr0 */ |
| 591 | #define FRV_NOP_NOPACK 0x80880000 /* ori gr0,0,gr0 */ |
| 592 | |
| 593 | /* Check a vliw insn for an insn of type containing the sym passed in label_sym. */ |
| 594 | |
| 595 | static struct vliw_insn_list *frv_find_in_vliw |
| 596 | PARAMS ((enum vliw_insn_type, struct vliw_chain *, symbolS *)); |
| 597 | |
| 598 | static struct vliw_insn_list * |
| 599 | frv_find_in_vliw (vliw_insn_type, this_chain, label_sym) |
| 600 | enum vliw_insn_type vliw_insn_type; |
| 601 | struct vliw_chain *this_chain; |
| 602 | symbolS *label_sym; |
| 603 | { |
| 604 | |
| 605 | struct vliw_insn_list *the_insn; |
| 606 | |
| 607 | if (!this_chain) |
| 608 | return NULL; |
| 609 | |
| 610 | for (the_insn = this_chain->insn_list; the_insn; the_insn = the_insn->next) |
| 611 | { |
| 612 | if (the_insn->type == vliw_insn_type |
| 613 | && the_insn->sym == label_sym) |
| 614 | return the_insn; |
| 615 | } |
| 616 | |
| 617 | return NULL; |
| 618 | } |
| 619 | |
| 620 | enum vliw_nop_type |
| 621 | { |
| 622 | /* A Vliw insn containing a single nop insn. */ |
| 623 | VLIW_SINGLE_NOP, |
| 624 | |
| 625 | /* A Vliw insn containing two nop insns. */ |
| 626 | VLIW_DOUBLE_NOP, |
| 627 | |
| 628 | /* Two vliw insns. The first containing two nop insns. |
| 629 | The second contain a single nop insn. */ |
| 630 | VLIW_DOUBLE_THEN_SINGLE_NOP |
| 631 | }; |
| 632 | |
| 633 | static void frv_debug_tomcat PARAMS ((struct vliw_chain *)); |
| 634 | |
| 635 | static void |
| 636 | frv_debug_tomcat (start_chain) |
| 637 | struct vliw_chain *start_chain; |
| 638 | { |
| 639 | struct vliw_chain *this_chain; |
| 640 | struct vliw_insn_list *this_insn; |
| 641 | int i = 1; |
| 642 | |
| 643 | for (this_chain = start_chain; this_chain; this_chain = this_chain->next, i++) |
| 644 | { |
| 645 | fprintf (stderr, "\nVliw Insn #%d, #insns: %d\n", i, this_chain->insn_count); |
| 646 | |
| 647 | for (this_insn = this_chain->insn_list; this_insn; this_insn = this_insn->next) |
| 648 | { |
| 649 | if (this_insn->type == VLIW_LABEL_TYPE) |
| 650 | fprintf (stderr, "Label Value: %p\n", this_insn->sym); |
| 651 | else if (this_insn->type == VLIW_BRANCH_TYPE) |
| 652 | fprintf (stderr, "%s to %p\n", this_insn->insn->base->name, this_insn->sym); |
| 653 | else if (this_insn->type == VLIW_BRANCH_HAS_NOPS) |
| 654 | fprintf (stderr, "nop'd %s to %p\n", this_insn->insn->base->name, this_insn->sym); |
| 655 | else if (this_insn->type == VLIW_NOP_TYPE) |
| 656 | fprintf (stderr, "Nop\n"); |
| 657 | else |
| 658 | fprintf (stderr, " %s\n", this_insn->insn->base->name); |
| 659 | } |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | static void frv_adjust_vliw_count PARAMS ((struct vliw_chain *)); |
| 664 | |
| 665 | static void |
| 666 | frv_adjust_vliw_count (this_chain) |
| 667 | struct vliw_chain *this_chain; |
| 668 | { |
| 669 | struct vliw_insn_list *this_insn; |
| 670 | |
| 671 | this_chain->insn_count = 0; |
| 672 | |
| 673 | for (this_insn = this_chain->insn_list; |
| 674 | this_insn; |
| 675 | this_insn = this_insn->next) |
| 676 | { |
| 677 | if (this_insn->type != VLIW_LABEL_TYPE) |
| 678 | this_chain->insn_count++; |
| 679 | } |
| 680 | |
| 681 | } |
| 682 | |
| 683 | /* Insert the desired nop combination in the vliw chain before insert_before_insn. |
| 684 | Rechain the vliw insn. */ |
| 685 | |
| 686 | static struct vliw_chain *frv_tomcat_shuffle |
| 687 | PARAMS ((enum vliw_nop_type, struct vliw_chain *, struct vliw_insn_list *)); |
| 688 | |
| 689 | static struct vliw_chain * |
| 690 | frv_tomcat_shuffle (this_nop_type, vliw_to_split, insert_before_insn) |
| 691 | enum vliw_nop_type this_nop_type; |
| 692 | struct vliw_chain *vliw_to_split; |
| 693 | struct vliw_insn_list *insert_before_insn; |
| 694 | { |
| 695 | |
| 696 | bfd_boolean pack_prev = FALSE; |
| 697 | struct vliw_chain *return_me = NULL; |
| 698 | struct vliw_insn_list *prev_insn = NULL; |
| 699 | struct vliw_insn_list *curr_insn = vliw_to_split->insn_list; |
| 700 | |
| 701 | struct vliw_chain *double_nop = (struct vliw_chain *) xmalloc (sizeof (struct vliw_chain)); |
| 702 | struct vliw_chain *single_nop = (struct vliw_chain *) xmalloc (sizeof (struct vliw_chain)); |
| 703 | struct vliw_chain *second_part = (struct vliw_chain *) xmalloc (sizeof (struct vliw_chain)); |
| 704 | struct vliw_chain *curr_vliw = vliw_chain_top; |
| 705 | struct vliw_chain *prev_vliw = NULL; |
| 706 | |
| 707 | while (curr_insn && curr_insn != insert_before_insn) |
| 708 | { |
| 709 | /* We can't set the packing bit on a label. If we have the case |
| 710 | label 1: |
| 711 | label 2: |
| 712 | label 3: |
| 713 | branch that needs nops |
| 714 | Then don't set pack bit later. */ |
| 715 | |
| 716 | if (curr_insn->type != VLIW_LABEL_TYPE) |
| 717 | pack_prev = TRUE; |
| 718 | prev_insn = curr_insn; |
| 719 | curr_insn = curr_insn->next; |
| 720 | } |
| 721 | |
| 722 | while (curr_vliw && curr_vliw != vliw_to_split) |
| 723 | { |
| 724 | prev_vliw = curr_vliw; |
| 725 | curr_vliw = curr_vliw->next; |
| 726 | } |
| 727 | |
| 728 | switch (this_nop_type) |
| 729 | { |
| 730 | case VLIW_SINGLE_NOP: |
| 731 | if (!prev_insn) |
| 732 | { |
| 733 | /* Branch is first, Insert the NOP prior to this vliw insn. */ |
| 734 | if (prev_vliw) |
| 735 | prev_vliw->next = single_nop; |
| 736 | else |
| 737 | vliw_chain_top = single_nop; |
| 738 | single_nop->next = vliw_to_split; |
| 739 | vliw_to_split->insn_list->type = VLIW_BRANCH_HAS_NOPS; |
| 740 | return_me = vliw_to_split; |
| 741 | } |
| 742 | else |
| 743 | { |
| 744 | /* Set the packing bit on the previous insn. */ |
| 745 | if (pack_prev) |
| 746 | { |
| 747 | char *buffer = prev_insn->address; |
| 748 | buffer[0] |= 0x80; |
| 749 | } |
| 750 | /* The branch is in the middle. Split this vliw insn into first |
| 751 | and second parts. Insert the NOP inbetween. */ |
| 752 | |
| 753 | second_part->insn_list = insert_before_insn; |
| 754 | second_part->insn_list->type = VLIW_BRANCH_HAS_NOPS; |
| 755 | second_part->next = vliw_to_split->next; |
| 756 | frv_adjust_vliw_count (second_part); |
| 757 | |
| 758 | single_nop->next = second_part; |
| 759 | |
| 760 | vliw_to_split->next = single_nop; |
| 761 | prev_insn->next = NULL; |
| 762 | |
| 763 | return_me = second_part; |
| 764 | frv_adjust_vliw_count (vliw_to_split); |
| 765 | } |
| 766 | break; |
| 767 | |
| 768 | case VLIW_DOUBLE_NOP: |
| 769 | if (!prev_insn) |
| 770 | { |
| 771 | /* Branch is first, Insert the NOP prior to this vliw insn. */ |
| 772 | if (prev_vliw) |
| 773 | prev_vliw->next = double_nop; |
| 774 | else |
| 775 | vliw_chain_top = double_nop; |
| 776 | |
| 777 | double_nop->next = vliw_to_split; |
| 778 | return_me = vliw_to_split; |
| 779 | vliw_to_split->insn_list->type = VLIW_BRANCH_HAS_NOPS; |
| 780 | } |
| 781 | else |
| 782 | { |
| 783 | /* Set the packing bit on the previous insn. */ |
| 784 | if (pack_prev) |
| 785 | { |
| 786 | char *buffer = prev_insn->address; |
| 787 | buffer[0] |= 0x80; |
| 788 | } |
| 789 | |
| 790 | /* The branch is in the middle. Split this vliw insn into first |
| 791 | and second parts. Insert the NOP inbetween. */ |
| 792 | second_part->insn_list = insert_before_insn; |
| 793 | second_part->insn_list->type = VLIW_BRANCH_HAS_NOPS; |
| 794 | second_part->next = vliw_to_split->next; |
| 795 | frv_adjust_vliw_count (second_part); |
| 796 | |
| 797 | double_nop->next = second_part; |
| 798 | |
| 799 | vliw_to_split->next = single_nop; |
| 800 | prev_insn->next = NULL; |
| 801 | frv_adjust_vliw_count (vliw_to_split); |
| 802 | |
| 803 | return_me = second_part; |
| 804 | } |
| 805 | break; |
| 806 | |
| 807 | case VLIW_DOUBLE_THEN_SINGLE_NOP: |
| 808 | double_nop->next = single_nop; |
| 809 | double_nop->insn_count = 2; |
| 810 | double_nop->insn_list = &double_nop_insn; |
| 811 | single_nop->insn_count = 1; |
| 812 | single_nop->insn_list = &single_nop_insn; |
| 813 | |
| 814 | if (!prev_insn) |
| 815 | { |
| 816 | /* The branch is the first insn in this vliw. Don't split the vliw. Insert |
| 817 | the nops prior to this vliw. */ |
| 818 | if (prev_vliw) |
| 819 | prev_vliw->next = double_nop; |
| 820 | else |
| 821 | vliw_chain_top = double_nop; |
| 822 | |
| 823 | single_nop->next = vliw_to_split; |
| 824 | return_me = vliw_to_split; |
| 825 | vliw_to_split->insn_list->type = VLIW_BRANCH_HAS_NOPS; |
| 826 | } |
| 827 | else |
| 828 | { |
| 829 | /* Set the packing bit on the previous insn. */ |
| 830 | if (pack_prev) |
| 831 | { |
| 832 | char *buffer = prev_insn->address; |
| 833 | buffer[0] |= 0x80; |
| 834 | } |
| 835 | |
| 836 | /* The branch is in the middle of this vliw insn. Split into first and |
| 837 | second parts. Insert the nop vliws in between. */ |
| 838 | second_part->insn_list = insert_before_insn; |
| 839 | second_part->insn_list->type = VLIW_BRANCH_HAS_NOPS; |
| 840 | second_part->next = vliw_to_split->next; |
| 841 | frv_adjust_vliw_count (second_part); |
| 842 | |
| 843 | single_nop->next = second_part; |
| 844 | |
| 845 | vliw_to_split->next = double_nop; |
| 846 | prev_insn->next = NULL; |
| 847 | frv_adjust_vliw_count (vliw_to_split); |
| 848 | |
| 849 | return_me = second_part; |
| 850 | } |
| 851 | break; |
| 852 | } |
| 853 | |
| 854 | return return_me; |
| 855 | } |
| 856 | |
| 857 | static void frv_tomcat_analyze_vliw_chains PARAMS ((void)); |
| 858 | |
| 859 | static void |
| 860 | frv_tomcat_analyze_vliw_chains () |
| 861 | { |
| 862 | struct vliw_chain *vliw1 = NULL; |
| 863 | struct vliw_chain *vliw2 = NULL; |
| 864 | struct vliw_chain *vliw3 = NULL; |
| 865 | |
| 866 | struct vliw_insn_list *this_insn = NULL; |
| 867 | struct vliw_insn_list *temp_insn = NULL; |
| 868 | |
| 869 | /* We potentially need to look at three VLIW insns to determine if the |
| 870 | workaround is required. Set them up. Ignore existing nops during analysis. */ |
| 871 | |
| 872 | #define FRV_SET_VLIW_WINDOW(VLIW1, VLIW2, VLIW3) \ |
| 873 | if (VLIW1 && VLIW1->next) \ |
| 874 | VLIW2 = VLIW1->next; \ |
| 875 | else \ |
| 876 | VLIW2 = NULL; \ |
| 877 | if (VLIW2 && VLIW2->next) \ |
| 878 | VLIW3 = VLIW2->next; \ |
| 879 | else \ |
| 880 | VLIW3 = NULL |
| 881 | |
| 882 | vliw1 = vliw_chain_top; |
| 883 | |
| 884 | workaround_top: |
| 885 | |
| 886 | FRV_SET_VLIW_WINDOW (vliw1, vliw2, vliw3); |
| 887 | |
| 888 | if (!vliw1) |
| 889 | return; |
| 890 | |
| 891 | if (vliw1->insn_count == 1) |
| 892 | { |
| 893 | /* check vliw1 for a label. */ |
| 894 | if (vliw1->insn_list->type == VLIW_LABEL_TYPE) |
| 895 | { |
| 896 | temp_insn = frv_find_in_vliw (VLIW_BRANCH_TYPE, vliw2, vliw1->insn_list->sym); |
| 897 | if (temp_insn) |
| 898 | { |
| 899 | vliw1 = frv_tomcat_shuffle (VLIW_DOUBLE_NOP, vliw2, vliw1->insn_list); |
| 900 | temp_insn->dnop_frag->fr_subtype = NOP_KEEP; |
| 901 | vliw1 = vliw1->next; |
| 902 | if (tomcat_stats) |
| 903 | tomcat_doubles++; |
| 904 | goto workaround_top; |
| 905 | } |
| 906 | else if (vliw2 |
| 907 | && vliw2->insn_count == 1 |
| 908 | && (temp_insn = frv_find_in_vliw (VLIW_BRANCH_TYPE, vliw3, vliw1->insn_list->sym)) != NULL) |
| 909 | { |
| 910 | temp_insn->snop_frag->fr_subtype = NOP_KEEP; |
| 911 | vliw1 = frv_tomcat_shuffle (VLIW_SINGLE_NOP, vliw3, vliw3->insn_list); |
| 912 | if (tomcat_stats) |
| 913 | tomcat_singles++; |
| 914 | goto workaround_top; |
| 915 | } |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | if (vliw1->insn_count == 2) |
| 920 | { |
| 921 | struct vliw_insn_list *this_insn; |
| 922 | |
| 923 | /* check vliw1 for a label. */ |
| 924 | for (this_insn = vliw1->insn_list; this_insn; this_insn = this_insn->next) |
| 925 | { |
| 926 | if (this_insn->type == VLIW_LABEL_TYPE) |
| 927 | { |
| 928 | if ((temp_insn = frv_find_in_vliw (VLIW_BRANCH_TYPE, vliw2, this_insn->sym)) != NULL) |
| 929 | { |
| 930 | temp_insn->snop_frag->fr_subtype = NOP_KEEP; |
| 931 | vliw1 = frv_tomcat_shuffle (VLIW_SINGLE_NOP, vliw2, this_insn); |
| 932 | if (tomcat_stats) |
| 933 | tomcat_singles++; |
| 934 | } |
| 935 | else |
| 936 | vliw1 = vliw1->next; |
| 937 | goto workaround_top; |
| 938 | } |
| 939 | } |
| 940 | } |
| 941 | /* Examine each insn in this VLIW. Look for the workaround criteria. */ |
| 942 | for (this_insn = vliw1->insn_list; this_insn; this_insn = this_insn->next) |
| 943 | { |
| 944 | /* Don't look at labels or nops. */ |
| 945 | while (this_insn |
| 946 | && (this_insn->type == VLIW_LABEL_TYPE |
| 947 | || this_insn->type == VLIW_NOP_TYPE |
| 948 | || this_insn->type == VLIW_BRANCH_HAS_NOPS)) |
| 949 | this_insn = this_insn->next; |
| 950 | |
| 951 | if (!this_insn) |
| 952 | { |
| 953 | vliw1 = vliw2; |
| 954 | goto workaround_top; |
| 955 | } |
| 956 | |
| 957 | if (frv_is_branch_insn (this_insn->insn)) |
| 958 | { |
| 959 | if ((temp_insn = frv_find_in_vliw (VLIW_LABEL_TYPE, vliw1, this_insn->sym)) != NULL) |
| 960 | { |
| 961 | /* Insert [nop/nop] [nop] before branch. */ |
| 962 | this_insn->snop_frag->fr_subtype = NOP_KEEP; |
| 963 | this_insn->dnop_frag->fr_subtype = NOP_KEEP; |
| 964 | vliw1 = frv_tomcat_shuffle (VLIW_DOUBLE_THEN_SINGLE_NOP, vliw1, this_insn); |
| 965 | goto workaround_top; |
| 966 | } |
| 967 | } |
| 968 | |
| 969 | |
| 970 | } |
| 971 | /* This vliw insn checks out okay. Take a look at the next one. */ |
| 972 | vliw1 = vliw1->next; |
| 973 | goto workaround_top; |
| 974 | } |
| 975 | |
| 976 | void |
| 977 | frv_tomcat_workaround () |
| 978 | { |
| 979 | if (frv_mach != bfd_mach_frvtomcat) |
| 980 | return; |
| 981 | |
| 982 | if (tomcat_debug) |
| 983 | frv_debug_tomcat (vliw_chain_top); |
| 984 | |
| 985 | frv_tomcat_analyze_vliw_chains (); |
| 986 | |
| 987 | if (tomcat_stats) |
| 988 | { |
| 989 | fprintf (stderr, "Inserted %d Single Nops\n", tomcat_singles); |
| 990 | fprintf (stderr, "Inserted %d Double Nops\n", tomcat_doubles); |
| 991 | } |
| 992 | } |
| 993 | |
| 994 | static int |
| 995 | fr550_check_insn_acc_range (frv_insn *insn, int low, int hi) |
| 996 | { |
| 997 | int acc; |
| 998 | switch (CGEN_INSN_NUM (insn->insn)) |
| 999 | { |
| 1000 | case FRV_INSN_MADDACCS: |
| 1001 | case FRV_INSN_MSUBACCS: |
| 1002 | case FRV_INSN_MDADDACCS: |
| 1003 | case FRV_INSN_MDSUBACCS: |
| 1004 | case FRV_INSN_MASACCS: |
| 1005 | case FRV_INSN_MDASACCS: |
| 1006 | acc = insn->fields.f_ACC40Si; |
| 1007 | if (acc < low || acc > hi) |
| 1008 | return 1; /* out of range */ |
| 1009 | acc = insn->fields.f_ACC40Sk; |
| 1010 | if (acc < low || acc > hi) |
| 1011 | return 1; /* out of range */ |
| 1012 | break; |
| 1013 | case FRV_INSN_MMULHS: |
| 1014 | case FRV_INSN_MMULHU: |
| 1015 | case FRV_INSN_MMULXHS: |
| 1016 | case FRV_INSN_MMULXHU: |
| 1017 | case FRV_INSN_CMMULHS: |
| 1018 | case FRV_INSN_CMMULHU: |
| 1019 | case FRV_INSN_MQMULHS: |
| 1020 | case FRV_INSN_MQMULHU: |
| 1021 | case FRV_INSN_MQMULXHS: |
| 1022 | case FRV_INSN_MQMULXHU: |
| 1023 | case FRV_INSN_CMQMULHS: |
| 1024 | case FRV_INSN_CMQMULHU: |
| 1025 | case FRV_INSN_MMACHS: |
| 1026 | case FRV_INSN_MMRDHS: |
| 1027 | case FRV_INSN_CMMACHS: |
| 1028 | case FRV_INSN_MQMACHS: |
| 1029 | case FRV_INSN_CMQMACHS: |
| 1030 | case FRV_INSN_MQXMACHS: |
| 1031 | case FRV_INSN_MQXMACXHS: |
| 1032 | case FRV_INSN_MQMACXHS: |
| 1033 | case FRV_INSN_MCPXRS: |
| 1034 | case FRV_INSN_MCPXIS: |
| 1035 | case FRV_INSN_CMCPXRS: |
| 1036 | case FRV_INSN_CMCPXIS: |
| 1037 | case FRV_INSN_MQCPXRS: |
| 1038 | case FRV_INSN_MQCPXIS: |
| 1039 | acc = insn->fields.f_ACC40Sk; |
| 1040 | if (acc < low || acc > hi) |
| 1041 | return 1; /* out of range */ |
| 1042 | break; |
| 1043 | case FRV_INSN_MMACHU: |
| 1044 | case FRV_INSN_MMRDHU: |
| 1045 | case FRV_INSN_CMMACHU: |
| 1046 | case FRV_INSN_MQMACHU: |
| 1047 | case FRV_INSN_CMQMACHU: |
| 1048 | case FRV_INSN_MCPXRU: |
| 1049 | case FRV_INSN_MCPXIU: |
| 1050 | case FRV_INSN_CMCPXRU: |
| 1051 | case FRV_INSN_CMCPXIU: |
| 1052 | case FRV_INSN_MQCPXRU: |
| 1053 | case FRV_INSN_MQCPXIU: |
| 1054 | acc = insn->fields.f_ACC40Uk; |
| 1055 | if (acc < low || acc > hi) |
| 1056 | return 1; /* out of range */ |
| 1057 | break; |
| 1058 | default: |
| 1059 | break; |
| 1060 | } |
| 1061 | return 0; /* all is ok */ |
| 1062 | } |
| 1063 | |
| 1064 | static int |
| 1065 | fr550_check_acc_range (FRV_VLIW *vliw, frv_insn *insn) |
| 1066 | { |
| 1067 | switch ((*vliw->current_vliw)[vliw->next_slot - 1]) |
| 1068 | { |
| 1069 | case UNIT_FM0: |
| 1070 | case UNIT_FM2: |
| 1071 | return fr550_check_insn_acc_range (insn, 0, 3); |
| 1072 | case UNIT_FM1: |
| 1073 | case UNIT_FM3: |
| 1074 | return fr550_check_insn_acc_range (insn, 4, 7); |
| 1075 | default: |
| 1076 | break; |
| 1077 | } |
| 1078 | return 0; /* all is ok */ |
| 1079 | } |
| 1080 | |
| 1081 | /* Return true if the target implements instruction INSN. */ |
| 1082 | |
| 1083 | static bfd_boolean |
| 1084 | target_implements_insn_p (const CGEN_INSN *insn) |
| 1085 | { |
| 1086 | switch (frv_mach) |
| 1087 | { |
| 1088 | default: |
| 1089 | /* bfd_mach_frv or generic. */ |
| 1090 | return TRUE; |
| 1091 | |
| 1092 | case bfd_mach_fr300: |
| 1093 | case bfd_mach_frvsimple: |
| 1094 | return CGEN_INSN_MACH_HAS_P (insn, MACH_SIMPLE); |
| 1095 | |
| 1096 | case bfd_mach_fr400: |
| 1097 | return ((fr400_audio || !CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_AUDIO)) |
| 1098 | && CGEN_INSN_MACH_HAS_P (insn, MACH_FR400)); |
| 1099 | |
| 1100 | case bfd_mach_fr450: |
| 1101 | return CGEN_INSN_MACH_HAS_P (insn, MACH_FR450); |
| 1102 | |
| 1103 | case bfd_mach_fr500: |
| 1104 | return CGEN_INSN_MACH_HAS_P (insn, MACH_FR500); |
| 1105 | |
| 1106 | case bfd_mach_fr550: |
| 1107 | return CGEN_INSN_MACH_HAS_P (insn, MACH_FR550); |
| 1108 | } |
| 1109 | } |
| 1110 | |
| 1111 | void |
| 1112 | md_assemble (str) |
| 1113 | char * str; |
| 1114 | { |
| 1115 | frv_insn insn; |
| 1116 | char *errmsg; |
| 1117 | int packing_constraint; |
| 1118 | finished_insnS finished_insn; |
| 1119 | fragS *double_nop_frag = NULL; |
| 1120 | fragS *single_nop_frag = NULL; |
| 1121 | struct vliw_insn_list *vliw_insn_list_entry = NULL; |
| 1122 | |
| 1123 | /* Initialize GAS's cgen interface for a new instruction. */ |
| 1124 | gas_cgen_init_parse (); |
| 1125 | |
| 1126 | memset (&insn, 0, sizeof (insn)); |
| 1127 | |
| 1128 | insn.insn = frv_cgen_assemble_insn |
| 1129 | (gas_cgen_cpu_desc, str, & insn.fields, insn.buffer, &errmsg); |
| 1130 | |
| 1131 | if (!insn.insn) |
| 1132 | { |
| 1133 | as_bad (errmsg); |
| 1134 | return; |
| 1135 | } |
| 1136 | |
| 1137 | /* If the cpu is tomcat, then we need to insert nops to workaround |
| 1138 | hardware limitations. We need to keep track of each vliw unit |
| 1139 | and examine the length of the unit and the individual insns |
| 1140 | within the unit to determine the number and location of the |
| 1141 | required nops. */ |
| 1142 | if (frv_mach == bfd_mach_frvtomcat) |
| 1143 | { |
| 1144 | /* If we've just finished a VLIW insn OR this is a branch, |
| 1145 | then start up a new frag. Fill it with nops. We will get rid |
| 1146 | of those that are not required after we've seen all of the |
| 1147 | instructions but before we start resolving fixups. */ |
| 1148 | if ( !FRV_IS_NOP (insn) |
| 1149 | && (frv_is_branch_insn (insn.insn) || insn.fields.f_pack)) |
| 1150 | { |
| 1151 | char *buffer; |
| 1152 | |
| 1153 | frag_wane (frag_now); |
| 1154 | frag_new (0); |
| 1155 | double_nop_frag = frag_now; |
| 1156 | buffer = frag_var (rs_machine_dependent, 8, 8, NOP_DELETE, NULL, 0, 0); |
| 1157 | md_number_to_chars (buffer, FRV_NOP_PACK, 4); |
| 1158 | md_number_to_chars (buffer+4, FRV_NOP_NOPACK, 4); |
| 1159 | |
| 1160 | frag_wane (frag_now); |
| 1161 | frag_new (0); |
| 1162 | single_nop_frag = frag_now; |
| 1163 | buffer = frag_var (rs_machine_dependent, 4, 4, NOP_DELETE, NULL, 0, 0); |
| 1164 | md_number_to_chars (buffer, FRV_NOP_NOPACK, 4); |
| 1165 | } |
| 1166 | |
| 1167 | vliw_insn_list_entry = frv_insert_vliw_insn (DO_COUNT); |
| 1168 | vliw_insn_list_entry->insn = insn.insn; |
| 1169 | if (frv_is_branch_insn (insn.insn)) |
| 1170 | vliw_insn_list_entry->type = VLIW_BRANCH_TYPE; |
| 1171 | |
| 1172 | if ( !FRV_IS_NOP (insn) |
| 1173 | && (frv_is_branch_insn (insn.insn) || insn.fields.f_pack)) |
| 1174 | { |
| 1175 | vliw_insn_list_entry->snop_frag = single_nop_frag; |
| 1176 | vliw_insn_list_entry->dnop_frag = double_nop_frag; |
| 1177 | } |
| 1178 | } |
| 1179 | |
| 1180 | /* Make sure that this insn does not violate the VLIW packing constraints. */ |
| 1181 | /* -mno-pack disallows any packing whatsoever. */ |
| 1182 | if (frv_flags & EF_FRV_NOPACK) |
| 1183 | { |
| 1184 | if (! insn.fields.f_pack) |
| 1185 | { |
| 1186 | as_bad (_("VLIW packing used for -mno-pack")); |
| 1187 | return; |
| 1188 | } |
| 1189 | } |
| 1190 | /* -mcpu=FRV is an idealized FR-V implementation that supports all of the |
| 1191 | instructions, don't do vliw checking. */ |
| 1192 | else if (frv_mach != bfd_mach_frv) |
| 1193 | { |
| 1194 | if (!target_implements_insn_p (insn.insn)) |
| 1195 | { |
| 1196 | as_bad (_("Instruction not supported by this architecture")); |
| 1197 | return; |
| 1198 | } |
| 1199 | packing_constraint = frv_vliw_add_insn (& vliw, insn.insn); |
| 1200 | if (frv_mach == bfd_mach_fr550 && ! packing_constraint) |
| 1201 | packing_constraint = fr550_check_acc_range (& vliw, & insn); |
| 1202 | if (insn.fields.f_pack) |
| 1203 | frv_vliw_reset (& vliw, frv_mach, frv_flags); |
| 1204 | if (packing_constraint) |
| 1205 | { |
| 1206 | as_bad (_("VLIW packing constraint violation")); |
| 1207 | return; |
| 1208 | } |
| 1209 | } |
| 1210 | |
| 1211 | /* Doesn't really matter what we pass for RELAX_P here. */ |
| 1212 | gas_cgen_finish_insn (insn.insn, insn.buffer, |
| 1213 | CGEN_FIELDS_BITSIZE (& insn.fields), 1, &finished_insn); |
| 1214 | |
| 1215 | |
| 1216 | /* If the cpu is tomcat, then we need to insert nops to workaround |
| 1217 | hardware limitations. We need to keep track of each vliw unit |
| 1218 | and examine the length of the unit and the individual insns |
| 1219 | within the unit to determine the number and location of the |
| 1220 | required nops. */ |
| 1221 | if (frv_mach == bfd_mach_frvtomcat) |
| 1222 | { |
| 1223 | if (vliw_insn_list_entry) |
| 1224 | vliw_insn_list_entry->address = finished_insn.addr; |
| 1225 | else |
| 1226 | abort(); |
| 1227 | |
| 1228 | if (insn.fields.f_pack) |
| 1229 | { |
| 1230 | /* We've completed a VLIW insn. */ |
| 1231 | previous_vliw_chain = current_vliw_chain; |
| 1232 | current_vliw_chain = NULL; |
| 1233 | current_vliw_insn = NULL; |
| 1234 | } |
| 1235 | } |
| 1236 | } |
| 1237 | |
| 1238 | /* The syntax in the manual says constants begin with '#'. |
| 1239 | We just ignore it. */ |
| 1240 | |
| 1241 | void |
| 1242 | md_operand (expressionP) |
| 1243 | expressionS * expressionP; |
| 1244 | { |
| 1245 | if (* input_line_pointer == '#') |
| 1246 | { |
| 1247 | input_line_pointer ++; |
| 1248 | expression (expressionP); |
| 1249 | } |
| 1250 | } |
| 1251 | |
| 1252 | valueT |
| 1253 | md_section_align (segment, size) |
| 1254 | segT segment; |
| 1255 | valueT size; |
| 1256 | { |
| 1257 | int align = bfd_get_section_alignment (stdoutput, segment); |
| 1258 | return ((size + (1 << align) - 1) & (-1 << align)); |
| 1259 | } |
| 1260 | |
| 1261 | symbolS * |
| 1262 | md_undefined_symbol (name) |
| 1263 | char * name ATTRIBUTE_UNUSED; |
| 1264 | { |
| 1265 | return 0; |
| 1266 | } |
| 1267 | \f |
| 1268 | /* Interface to relax_segment. */ |
| 1269 | |
| 1270 | /* FIXME: Build table by hand, get it working, then machine generate. */ |
| 1271 | const relax_typeS md_relax_table[] = |
| 1272 | { |
| 1273 | {1, 1, 0, 0}, |
| 1274 | {511 - 2 - 2, -512 - 2 + 2, 0, 2 }, |
| 1275 | {0x2000000 - 1 - 2, -0x2000000 - 2, 2, 0 }, |
| 1276 | {0x2000000 - 1 - 2, -0x2000000 - 2, 4, 0 } |
| 1277 | }; |
| 1278 | |
| 1279 | long |
| 1280 | frv_relax_frag (fragP, stretch) |
| 1281 | fragS *fragP ATTRIBUTE_UNUSED; |
| 1282 | long stretch ATTRIBUTE_UNUSED; |
| 1283 | { |
| 1284 | return 0; |
| 1285 | } |
| 1286 | |
| 1287 | /* Return an initial guess of the length by which a fragment must grow to |
| 1288 | hold a branch to reach its destination. |
| 1289 | Also updates fr_type/fr_subtype as necessary. |
| 1290 | |
| 1291 | Called just before doing relaxation. |
| 1292 | Any symbol that is now undefined will not become defined. |
| 1293 | The guess for fr_var is ACTUALLY the growth beyond fr_fix. |
| 1294 | Whatever we do to grow fr_fix or fr_var contributes to our returned value. |
| 1295 | Although it may not be explicit in the frag, pretend fr_var starts with a |
| 1296 | 0 value. */ |
| 1297 | |
| 1298 | int |
| 1299 | md_estimate_size_before_relax (fragP, segment) |
| 1300 | fragS * fragP; |
| 1301 | segT segment ATTRIBUTE_UNUSED; |
| 1302 | { |
| 1303 | switch (fragP->fr_subtype) |
| 1304 | { |
| 1305 | case NOP_KEEP: |
| 1306 | return fragP->fr_var; |
| 1307 | |
| 1308 | default: |
| 1309 | case NOP_DELETE: |
| 1310 | return 0; |
| 1311 | } |
| 1312 | } |
| 1313 | |
| 1314 | /* *fragP has been relaxed to its final size, and now needs to have |
| 1315 | the bytes inside it modified to conform to the new size. |
| 1316 | |
| 1317 | Called after relaxation is finished. |
| 1318 | fragP->fr_type == rs_machine_dependent. |
| 1319 | fragP->fr_subtype is the subtype of what the address relaxed to. */ |
| 1320 | |
| 1321 | void |
| 1322 | md_convert_frag (abfd, sec, fragP) |
| 1323 | bfd * abfd ATTRIBUTE_UNUSED; |
| 1324 | segT sec ATTRIBUTE_UNUSED; |
| 1325 | fragS * fragP; |
| 1326 | { |
| 1327 | switch (fragP->fr_subtype) |
| 1328 | { |
| 1329 | default: |
| 1330 | case NOP_DELETE: |
| 1331 | return; |
| 1332 | |
| 1333 | case NOP_KEEP: |
| 1334 | fragP->fr_fix = fragP->fr_var; |
| 1335 | fragP->fr_var = 0; |
| 1336 | return; |
| 1337 | } |
| 1338 | } |
| 1339 | \f |
| 1340 | /* Functions concerning relocs. */ |
| 1341 | |
| 1342 | /* The location from which a PC relative jump should be calculated, |
| 1343 | given a PC relative reloc. */ |
| 1344 | |
| 1345 | long |
| 1346 | md_pcrel_from_section (fixP, sec) |
| 1347 | fixS * fixP; |
| 1348 | segT sec; |
| 1349 | { |
| 1350 | if (TC_FORCE_RELOCATION (fixP) |
| 1351 | || (fixP->fx_addsy != (symbolS *) NULL |
| 1352 | && S_GET_SEGMENT (fixP->fx_addsy) != sec)) |
| 1353 | { |
| 1354 | /* If we can't adjust this relocation, or if it references a |
| 1355 | local symbol in a different section (which |
| 1356 | TC_FORCE_RELOCATION can't check), let the linker figure it |
| 1357 | out. */ |
| 1358 | return 0; |
| 1359 | } |
| 1360 | |
| 1361 | return (fixP->fx_frag->fr_address + fixP->fx_where) & ~1; |
| 1362 | } |
| 1363 | |
| 1364 | /* Return the bfd reloc type for OPERAND of INSN at fixup FIXP. |
| 1365 | Returns BFD_RELOC_NONE if no reloc type can be found. |
| 1366 | *FIXP may be modified if desired. */ |
| 1367 | |
| 1368 | bfd_reloc_code_real_type |
| 1369 | md_cgen_lookup_reloc (insn, operand, fixP) |
| 1370 | const CGEN_INSN * insn ATTRIBUTE_UNUSED; |
| 1371 | const CGEN_OPERAND * operand; |
| 1372 | fixS * fixP; |
| 1373 | { |
| 1374 | switch (operand->type) |
| 1375 | { |
| 1376 | case FRV_OPERAND_LABEL16: |
| 1377 | fixP->fx_pcrel = TRUE; |
| 1378 | return BFD_RELOC_FRV_LABEL16; |
| 1379 | |
| 1380 | case FRV_OPERAND_LABEL24: |
| 1381 | fixP->fx_pcrel = TRUE; |
| 1382 | |
| 1383 | if (fixP->fx_cgen.opinfo != 0) |
| 1384 | return fixP->fx_cgen.opinfo; |
| 1385 | |
| 1386 | return BFD_RELOC_FRV_LABEL24; |
| 1387 | |
| 1388 | case FRV_OPERAND_UHI16: |
| 1389 | case FRV_OPERAND_ULO16: |
| 1390 | case FRV_OPERAND_SLO16: |
| 1391 | case FRV_OPERAND_CALLANN: |
| 1392 | case FRV_OPERAND_LDANN: |
| 1393 | case FRV_OPERAND_LDDANN: |
| 1394 | /* The relocation type should be recorded in opinfo */ |
| 1395 | if (fixP->fx_cgen.opinfo != 0) |
| 1396 | return fixP->fx_cgen.opinfo; |
| 1397 | break; |
| 1398 | |
| 1399 | case FRV_OPERAND_D12: |
| 1400 | case FRV_OPERAND_S12: |
| 1401 | if (fixP->fx_cgen.opinfo != 0) |
| 1402 | return fixP->fx_cgen.opinfo; |
| 1403 | |
| 1404 | return BFD_RELOC_FRV_GPREL12; |
| 1405 | |
| 1406 | case FRV_OPERAND_U12: |
| 1407 | return BFD_RELOC_FRV_GPRELU12; |
| 1408 | |
| 1409 | default: |
| 1410 | break; |
| 1411 | } |
| 1412 | return BFD_RELOC_NONE; |
| 1413 | } |
| 1414 | |
| 1415 | |
| 1416 | /* See whether we need to force a relocation into the output file. |
| 1417 | This is used to force out switch and PC relative relocations when |
| 1418 | relaxing. */ |
| 1419 | |
| 1420 | int |
| 1421 | frv_force_relocation (fix) |
| 1422 | fixS * fix; |
| 1423 | { |
| 1424 | switch (fix->fx_r_type < BFD_RELOC_UNUSED |
| 1425 | ? (int) fix->fx_r_type |
| 1426 | : fix->fx_cgen.opinfo) |
| 1427 | { |
| 1428 | case BFD_RELOC_FRV_GPREL12: |
| 1429 | case BFD_RELOC_FRV_GPRELU12: |
| 1430 | case BFD_RELOC_FRV_GPREL32: |
| 1431 | case BFD_RELOC_FRV_GPRELHI: |
| 1432 | case BFD_RELOC_FRV_GPRELLO: |
| 1433 | case BFD_RELOC_FRV_GOT12: |
| 1434 | case BFD_RELOC_FRV_GOTHI: |
| 1435 | case BFD_RELOC_FRV_GOTLO: |
| 1436 | case BFD_RELOC_FRV_FUNCDESC_VALUE: |
| 1437 | case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: |
| 1438 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: |
| 1439 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: |
| 1440 | case BFD_RELOC_FRV_GOTOFF12: |
| 1441 | case BFD_RELOC_FRV_GOTOFFHI: |
| 1442 | case BFD_RELOC_FRV_GOTOFFLO: |
| 1443 | case BFD_RELOC_FRV_GETTLSOFF: |
| 1444 | case BFD_RELOC_FRV_TLSDESC_VALUE: |
| 1445 | case BFD_RELOC_FRV_GOTTLSDESC12: |
| 1446 | case BFD_RELOC_FRV_GOTTLSDESCHI: |
| 1447 | case BFD_RELOC_FRV_GOTTLSDESCLO: |
| 1448 | case BFD_RELOC_FRV_TLSMOFF12: |
| 1449 | case BFD_RELOC_FRV_TLSMOFFHI: |
| 1450 | case BFD_RELOC_FRV_TLSMOFFLO: |
| 1451 | case BFD_RELOC_FRV_GOTTLSOFF12: |
| 1452 | case BFD_RELOC_FRV_GOTTLSOFFHI: |
| 1453 | case BFD_RELOC_FRV_GOTTLSOFFLO: |
| 1454 | case BFD_RELOC_FRV_TLSOFF: |
| 1455 | case BFD_RELOC_FRV_TLSDESC_RELAX: |
| 1456 | case BFD_RELOC_FRV_GETTLSOFF_RELAX: |
| 1457 | case BFD_RELOC_FRV_TLSOFF_RELAX: |
| 1458 | return 1; |
| 1459 | |
| 1460 | default: |
| 1461 | break; |
| 1462 | } |
| 1463 | |
| 1464 | return generic_force_reloc (fix); |
| 1465 | } |
| 1466 | |
| 1467 | /* Apply a fixup that could be resolved within the assembler. */ |
| 1468 | |
| 1469 | void |
| 1470 | md_apply_fix (fixP, valP, seg) |
| 1471 | fixS * fixP; |
| 1472 | valueT * valP; |
| 1473 | segT seg; |
| 1474 | { |
| 1475 | if (fixP->fx_addsy == 0) |
| 1476 | switch (fixP->fx_cgen.opinfo) |
| 1477 | { |
| 1478 | case BFD_RELOC_FRV_HI16: |
| 1479 | *valP >>= 16; |
| 1480 | /* Fall through. */ |
| 1481 | case BFD_RELOC_FRV_LO16: |
| 1482 | *valP &= 0xffff; |
| 1483 | break; |
| 1484 | |
| 1485 | /* We need relocations for these, even if their symbols reduce |
| 1486 | to constants. */ |
| 1487 | case BFD_RELOC_FRV_GPREL12: |
| 1488 | case BFD_RELOC_FRV_GPRELU12: |
| 1489 | case BFD_RELOC_FRV_GPREL32: |
| 1490 | case BFD_RELOC_FRV_GPRELHI: |
| 1491 | case BFD_RELOC_FRV_GPRELLO: |
| 1492 | case BFD_RELOC_FRV_GOT12: |
| 1493 | case BFD_RELOC_FRV_GOTHI: |
| 1494 | case BFD_RELOC_FRV_GOTLO: |
| 1495 | case BFD_RELOC_FRV_FUNCDESC_VALUE: |
| 1496 | case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: |
| 1497 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: |
| 1498 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: |
| 1499 | case BFD_RELOC_FRV_GOTOFF12: |
| 1500 | case BFD_RELOC_FRV_GOTOFFHI: |
| 1501 | case BFD_RELOC_FRV_GOTOFFLO: |
| 1502 | case BFD_RELOC_FRV_GETTLSOFF: |
| 1503 | case BFD_RELOC_FRV_TLSDESC_VALUE: |
| 1504 | case BFD_RELOC_FRV_GOTTLSDESC12: |
| 1505 | case BFD_RELOC_FRV_GOTTLSDESCHI: |
| 1506 | case BFD_RELOC_FRV_GOTTLSDESCLO: |
| 1507 | case BFD_RELOC_FRV_TLSMOFF12: |
| 1508 | case BFD_RELOC_FRV_TLSMOFFHI: |
| 1509 | case BFD_RELOC_FRV_TLSMOFFLO: |
| 1510 | case BFD_RELOC_FRV_GOTTLSOFF12: |
| 1511 | case BFD_RELOC_FRV_GOTTLSOFFHI: |
| 1512 | case BFD_RELOC_FRV_GOTTLSOFFLO: |
| 1513 | case BFD_RELOC_FRV_TLSOFF: |
| 1514 | case BFD_RELOC_FRV_TLSDESC_RELAX: |
| 1515 | case BFD_RELOC_FRV_GETTLSOFF_RELAX: |
| 1516 | case BFD_RELOC_FRV_TLSOFF_RELAX: |
| 1517 | fixP->fx_addsy = expr_build_uconstant (0); |
| 1518 | break; |
| 1519 | } |
| 1520 | else |
| 1521 | switch (fixP->fx_cgen.opinfo) |
| 1522 | { |
| 1523 | case BFD_RELOC_FRV_GETTLSOFF: |
| 1524 | case BFD_RELOC_FRV_TLSDESC_VALUE: |
| 1525 | case BFD_RELOC_FRV_GOTTLSDESC12: |
| 1526 | case BFD_RELOC_FRV_GOTTLSDESCHI: |
| 1527 | case BFD_RELOC_FRV_GOTTLSDESCLO: |
| 1528 | case BFD_RELOC_FRV_TLSMOFF12: |
| 1529 | case BFD_RELOC_FRV_TLSMOFFHI: |
| 1530 | case BFD_RELOC_FRV_TLSMOFFLO: |
| 1531 | case BFD_RELOC_FRV_GOTTLSOFF12: |
| 1532 | case BFD_RELOC_FRV_GOTTLSOFFHI: |
| 1533 | case BFD_RELOC_FRV_GOTTLSOFFLO: |
| 1534 | case BFD_RELOC_FRV_TLSOFF: |
| 1535 | case BFD_RELOC_FRV_TLSDESC_RELAX: |
| 1536 | case BFD_RELOC_FRV_GETTLSOFF_RELAX: |
| 1537 | case BFD_RELOC_FRV_TLSOFF_RELAX: |
| 1538 | /* Mark TLS symbols as such. */ |
| 1539 | if (S_GET_SEGMENT (fixP->fx_addsy) != absolute_section) |
| 1540 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
| 1541 | break; |
| 1542 | } |
| 1543 | |
| 1544 | gas_cgen_md_apply_fix (fixP, valP, seg); |
| 1545 | return; |
| 1546 | } |
| 1547 | |
| 1548 | \f |
| 1549 | /* Write a value out to the object file, using the appropriate endianness. */ |
| 1550 | |
| 1551 | void |
| 1552 | frv_md_number_to_chars (buf, val, n) |
| 1553 | char * buf; |
| 1554 | valueT val; |
| 1555 | int n; |
| 1556 | { |
| 1557 | number_to_chars_bigendian (buf, val, n); |
| 1558 | } |
| 1559 | |
| 1560 | char * |
| 1561 | md_atof (int type, char * litP, int * sizeP) |
| 1562 | { |
| 1563 | return ieee_md_atof (type, litP, sizeP, TRUE); |
| 1564 | } |
| 1565 | |
| 1566 | bfd_boolean |
| 1567 | frv_fix_adjustable (fixP) |
| 1568 | fixS * fixP; |
| 1569 | { |
| 1570 | bfd_reloc_code_real_type reloc_type; |
| 1571 | |
| 1572 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) |
| 1573 | { |
| 1574 | const CGEN_INSN *insn = NULL; |
| 1575 | int opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; |
| 1576 | const CGEN_OPERAND *operand = cgen_operand_lookup_by_num(gas_cgen_cpu_desc, opindex); |
| 1577 | reloc_type = md_cgen_lookup_reloc (insn, operand, fixP); |
| 1578 | } |
| 1579 | else |
| 1580 | reloc_type = fixP->fx_r_type; |
| 1581 | |
| 1582 | /* We need the symbol name for the VTABLE entries */ |
| 1583 | if ( reloc_type == BFD_RELOC_VTABLE_INHERIT |
| 1584 | || reloc_type == BFD_RELOC_VTABLE_ENTRY |
| 1585 | || reloc_type == BFD_RELOC_FRV_GPREL12 |
| 1586 | || reloc_type == BFD_RELOC_FRV_GPRELU12) |
| 1587 | return 0; |
| 1588 | |
| 1589 | return 1; |
| 1590 | } |
| 1591 | |
| 1592 | /* Allow user to set flags bits. */ |
| 1593 | void |
| 1594 | frv_set_flags (arg) |
| 1595 | int arg ATTRIBUTE_UNUSED; |
| 1596 | { |
| 1597 | flagword new_flags = get_absolute_expression (); |
| 1598 | flagword new_mask = ~ (flagword)0; |
| 1599 | |
| 1600 | frv_user_set_flags_p = 1; |
| 1601 | if (*input_line_pointer == ',') |
| 1602 | { |
| 1603 | ++input_line_pointer; |
| 1604 | new_mask = get_absolute_expression (); |
| 1605 | } |
| 1606 | |
| 1607 | frv_flags = (frv_flags & ~new_mask) | (new_flags & new_mask); |
| 1608 | bfd_set_private_flags (stdoutput, frv_flags); |
| 1609 | } |
| 1610 | |
| 1611 | /* Frv specific function to handle 4 byte initializations for pointers that are |
| 1612 | considered 'safe' for use with pic support. Until frv_frob_file{,_section} |
| 1613 | is run, we encode it a BFD_RELOC_CTOR, and it is turned back into a normal |
| 1614 | BFD_RELOC_32 at that time. */ |
| 1615 | |
| 1616 | void |
| 1617 | frv_pic_ptr (nbytes) |
| 1618 | int nbytes; |
| 1619 | { |
| 1620 | expressionS exp; |
| 1621 | char *p; |
| 1622 | |
| 1623 | if (nbytes != 4) |
| 1624 | abort (); |
| 1625 | |
| 1626 | #ifdef md_flush_pending_output |
| 1627 | md_flush_pending_output (); |
| 1628 | #endif |
| 1629 | |
| 1630 | if (is_it_end_of_statement ()) |
| 1631 | { |
| 1632 | demand_empty_rest_of_line (); |
| 1633 | return; |
| 1634 | } |
| 1635 | |
| 1636 | #ifdef md_cons_align |
| 1637 | md_cons_align (nbytes); |
| 1638 | #endif |
| 1639 | |
| 1640 | do |
| 1641 | { |
| 1642 | bfd_reloc_code_real_type reloc_type = BFD_RELOC_CTOR; |
| 1643 | |
| 1644 | if (strncasecmp (input_line_pointer, "funcdesc(", 9) == 0) |
| 1645 | { |
| 1646 | input_line_pointer += 9; |
| 1647 | expression (&exp); |
| 1648 | if (*input_line_pointer == ')') |
| 1649 | input_line_pointer++; |
| 1650 | else |
| 1651 | as_bad (_("missing ')'")); |
| 1652 | reloc_type = BFD_RELOC_FRV_FUNCDESC; |
| 1653 | } |
| 1654 | else if (strncasecmp (input_line_pointer, "tlsmoff(", 8) == 0) |
| 1655 | { |
| 1656 | input_line_pointer += 8; |
| 1657 | expression (&exp); |
| 1658 | if (*input_line_pointer == ')') |
| 1659 | input_line_pointer++; |
| 1660 | else |
| 1661 | as_bad (_("missing ')'")); |
| 1662 | reloc_type = BFD_RELOC_FRV_TLSMOFF; |
| 1663 | } |
| 1664 | else |
| 1665 | expression (&exp); |
| 1666 | |
| 1667 | p = frag_more (4); |
| 1668 | memset (p, 0, 4); |
| 1669 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &exp, 0, |
| 1670 | reloc_type); |
| 1671 | } |
| 1672 | while (*input_line_pointer++ == ','); |
| 1673 | |
| 1674 | input_line_pointer--; /* Put terminator back into stream. */ |
| 1675 | demand_empty_rest_of_line (); |
| 1676 | } |
| 1677 | |
| 1678 | \f |
| 1679 | |
| 1680 | #ifdef DEBUG |
| 1681 | #define DPRINTF1(A) fprintf (stderr, A) |
| 1682 | #define DPRINTF2(A,B) fprintf (stderr, A, B) |
| 1683 | #define DPRINTF3(A,B,C) fprintf (stderr, A, B, C) |
| 1684 | |
| 1685 | #else |
| 1686 | #define DPRINTF1(A) |
| 1687 | #define DPRINTF2(A,B) |
| 1688 | #define DPRINTF3(A,B,C) |
| 1689 | #endif |
| 1690 | |
| 1691 | /* Go through a the sections looking for relocations that are problematical for |
| 1692 | pic. If not pic, just note that this object can't be linked with pic. If |
| 1693 | it is pic, see if it needs to be marked so that it will be fixed up, or if |
| 1694 | not possible, issue an error. */ |
| 1695 | |
| 1696 | static void |
| 1697 | frv_frob_file_section (abfd, sec, ptr) |
| 1698 | bfd *abfd; |
| 1699 | asection *sec; |
| 1700 | PTR ptr ATTRIBUTE_UNUSED; |
| 1701 | { |
| 1702 | segment_info_type *seginfo = seg_info (sec); |
| 1703 | fixS *fixp; |
| 1704 | CGEN_CPU_DESC cd = gas_cgen_cpu_desc; |
| 1705 | flagword flags = bfd_get_section_flags (abfd, sec); |
| 1706 | |
| 1707 | /* Skip relocations in known sections (.ctors, .dtors, and .gcc_except_table) |
| 1708 | since we can fix those up by hand. */ |
| 1709 | int known_section_p = (sec->name |
| 1710 | && sec->name[0] == '.' |
| 1711 | && ((sec->name[1] == 'c' |
| 1712 | && strcmp (sec->name, ".ctor") == 0) |
| 1713 | || (sec->name[1] == 'd' |
| 1714 | && strcmp (sec->name, ".dtor") == 0) |
| 1715 | || (sec->name[1] == 'g' |
| 1716 | && strcmp (sec->name, ".gcc_except_table") == 0))); |
| 1717 | |
| 1718 | DPRINTF3 ("\nFrv section %s%s\n", sec->name, (known_section_p) ? ", known section" : ""); |
| 1719 | if ((flags & SEC_ALLOC) == 0) |
| 1720 | { |
| 1721 | DPRINTF1 ("\tSkipping non-loaded section\n"); |
| 1722 | return; |
| 1723 | } |
| 1724 | |
| 1725 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) |
| 1726 | { |
| 1727 | symbolS *s = fixp->fx_addsy; |
| 1728 | bfd_reloc_code_real_type reloc; |
| 1729 | int non_pic_p; |
| 1730 | int opindex; |
| 1731 | const CGEN_OPERAND *operand; |
| 1732 | const CGEN_INSN *insn = fixp->fx_cgen.insn; |
| 1733 | |
| 1734 | if (fixp->fx_done) |
| 1735 | { |
| 1736 | DPRINTF1 ("\tSkipping reloc that has already been done\n"); |
| 1737 | continue; |
| 1738 | } |
| 1739 | |
| 1740 | if (fixp->fx_pcrel) |
| 1741 | { |
| 1742 | DPRINTF1 ("\tSkipping reloc that is PC relative\n"); |
| 1743 | continue; |
| 1744 | } |
| 1745 | |
| 1746 | if (! s) |
| 1747 | { |
| 1748 | DPRINTF1 ("\tSkipping reloc without symbol\n"); |
| 1749 | continue; |
| 1750 | } |
| 1751 | |
| 1752 | if (fixp->fx_r_type < BFD_RELOC_UNUSED) |
| 1753 | { |
| 1754 | opindex = -1; |
| 1755 | reloc = fixp->fx_r_type; |
| 1756 | } |
| 1757 | else |
| 1758 | { |
| 1759 | opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED; |
| 1760 | operand = cgen_operand_lookup_by_num (cd, opindex); |
| 1761 | reloc = md_cgen_lookup_reloc (insn, operand, fixp); |
| 1762 | } |
| 1763 | |
| 1764 | DPRINTF3 ("\treloc %s\t%s", bfd_get_reloc_code_name (reloc), S_GET_NAME (s)); |
| 1765 | |
| 1766 | non_pic_p = 0; |
| 1767 | switch (reloc) |
| 1768 | { |
| 1769 | default: |
| 1770 | break; |
| 1771 | |
| 1772 | case BFD_RELOC_32: |
| 1773 | /* Skip relocations in known sections (.ctors, .dtors, and |
| 1774 | .gcc_except_table) since we can fix those up by hand. Also |
| 1775 | skip forward references to constants. Also skip a difference |
| 1776 | of two symbols, which still uses the BFD_RELOC_32 at this |
| 1777 | point. */ |
| 1778 | if (! known_section_p |
| 1779 | && S_GET_SEGMENT (s) != absolute_section |
| 1780 | && !fixp->fx_subsy |
| 1781 | && (flags & (SEC_READONLY | SEC_CODE)) == 0) |
| 1782 | { |
| 1783 | non_pic_p = 1; |
| 1784 | } |
| 1785 | break; |
| 1786 | |
| 1787 | /* FIXME -- should determine if any of the GP relocation really uses |
| 1788 | gr16 (which is not pic safe) or not. Right now, assume if we |
| 1789 | aren't being compiled with -mpic, the usage is non pic safe, but |
| 1790 | is safe with -mpic. */ |
| 1791 | case BFD_RELOC_FRV_GPREL12: |
| 1792 | case BFD_RELOC_FRV_GPRELU12: |
| 1793 | case BFD_RELOC_FRV_GPREL32: |
| 1794 | case BFD_RELOC_FRV_GPRELHI: |
| 1795 | case BFD_RELOC_FRV_GPRELLO: |
| 1796 | non_pic_p = ! frv_pic_p; |
| 1797 | break; |
| 1798 | |
| 1799 | case BFD_RELOC_FRV_LO16: |
| 1800 | case BFD_RELOC_FRV_HI16: |
| 1801 | if (S_GET_SEGMENT (s) != absolute_section) |
| 1802 | non_pic_p = 1; |
| 1803 | break; |
| 1804 | |
| 1805 | case BFD_RELOC_VTABLE_INHERIT: |
| 1806 | case BFD_RELOC_VTABLE_ENTRY: |
| 1807 | non_pic_p = 1; |
| 1808 | break; |
| 1809 | |
| 1810 | /* If this is a blessed BFD_RELOC_32, convert it back to the normal |
| 1811 | relocation. */ |
| 1812 | case BFD_RELOC_CTOR: |
| 1813 | fixp->fx_r_type = BFD_RELOC_32; |
| 1814 | break; |
| 1815 | } |
| 1816 | |
| 1817 | if (non_pic_p) |
| 1818 | { |
| 1819 | DPRINTF1 (" (Non-pic relocation)\n"); |
| 1820 | if (frv_pic_p) |
| 1821 | as_warn_where (fixp->fx_file, fixp->fx_line, |
| 1822 | _("Relocation %s is not safe for %s"), |
| 1823 | bfd_get_reloc_code_name (reloc), frv_pic_flag); |
| 1824 | |
| 1825 | else if ((frv_flags & EF_FRV_NON_PIC_RELOCS) == 0) |
| 1826 | { |
| 1827 | frv_flags |= EF_FRV_NON_PIC_RELOCS; |
| 1828 | bfd_set_private_flags (abfd, frv_flags); |
| 1829 | } |
| 1830 | } |
| 1831 | #ifdef DEBUG |
| 1832 | else |
| 1833 | DPRINTF1 ("\n"); |
| 1834 | #endif |
| 1835 | } |
| 1836 | } |
| 1837 | |
| 1838 | /* After all of the symbols have been adjusted, go over the file looking |
| 1839 | for any relocations that pic won't support. */ |
| 1840 | |
| 1841 | void |
| 1842 | frv_frob_file () |
| 1843 | { |
| 1844 | bfd_map_over_sections (stdoutput, frv_frob_file_section, (PTR)0); |
| 1845 | } |
| 1846 | |
| 1847 | void |
| 1848 | frv_frob_label (this_label) |
| 1849 | symbolS *this_label; |
| 1850 | { |
| 1851 | struct vliw_insn_list *vliw_insn_list_entry; |
| 1852 | |
| 1853 | if (frv_mach != bfd_mach_frvtomcat) |
| 1854 | return; |
| 1855 | |
| 1856 | if (now_seg != text_section) |
| 1857 | return; |
| 1858 | |
| 1859 | vliw_insn_list_entry = frv_insert_vliw_insn(DONT_COUNT); |
| 1860 | vliw_insn_list_entry->type = VLIW_LABEL_TYPE; |
| 1861 | vliw_insn_list_entry->sym = this_label; |
| 1862 | } |
| 1863 | |
| 1864 | fixS * |
| 1865 | frv_cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp) |
| 1866 | fragS * frag; |
| 1867 | int where; |
| 1868 | const CGEN_INSN * insn; |
| 1869 | int length; |
| 1870 | const CGEN_OPERAND * operand; |
| 1871 | int opinfo; |
| 1872 | expressionS * exp; |
| 1873 | { |
| 1874 | fixS * fixP = gas_cgen_record_fixup_exp (frag, where, insn, length, |
| 1875 | operand, opinfo, exp); |
| 1876 | |
| 1877 | if (frv_mach == bfd_mach_frvtomcat |
| 1878 | && current_vliw_insn |
| 1879 | && current_vliw_insn->type == VLIW_BRANCH_TYPE |
| 1880 | && exp != NULL) |
| 1881 | current_vliw_insn->sym = exp->X_add_symbol; |
| 1882 | |
| 1883 | return fixP; |
| 1884 | } |