| 1 | /* tc-microblaze.c -- Assemble code for Xilinx MicroBlaze |
| 2 | |
| 3 | Copyright (C) 2009-2017 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 the Free |
| 19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 20 | 02110-1301, USA. */ |
| 21 | |
| 22 | #include "as.h" |
| 23 | #include <stdio.h> |
| 24 | #include "bfd.h" |
| 25 | #include "subsegs.h" |
| 26 | #define DEFINE_TABLE |
| 27 | #include "../opcodes/microblaze-opc.h" |
| 28 | #include "../opcodes/microblaze-opcm.h" |
| 29 | #include "safe-ctype.h" |
| 30 | #include <string.h> |
| 31 | #include <dwarf2dbg.h> |
| 32 | #include "aout/stab_gnu.h" |
| 33 | |
| 34 | #ifndef streq |
| 35 | #define streq(a,b) (strcmp (a, b) == 0) |
| 36 | #endif |
| 37 | |
| 38 | #define OPTION_EB (OPTION_MD_BASE + 0) |
| 39 | #define OPTION_EL (OPTION_MD_BASE + 1) |
| 40 | |
| 41 | void microblaze_generate_symbol (char *sym); |
| 42 | static bfd_boolean check_spl_reg (unsigned *); |
| 43 | |
| 44 | /* Several places in this file insert raw instructions into the |
| 45 | object. They should generate the instruction |
| 46 | and then use these four macros to crack the instruction value into |
| 47 | the appropriate byte values. */ |
| 48 | #define INST_BYTE0(x) (target_big_endian ? (((x) >> 24) & 0xFF) : ((x) & 0xFF)) |
| 49 | #define INST_BYTE1(x) (target_big_endian ? (((x) >> 16) & 0xFF) : (((x) >> 8) & 0xFF)) |
| 50 | #define INST_BYTE2(x) (target_big_endian ? (((x) >> 8) & 0xFF) : (((x) >> 16) & 0xFF)) |
| 51 | #define INST_BYTE3(x) (target_big_endian ? ((x) & 0xFF) : (((x) >> 24) & 0xFF)) |
| 52 | |
| 53 | /* This array holds the chars that always start a comment. If the |
| 54 | pre-processor is disabled, these aren't very useful. */ |
| 55 | const char comment_chars[] = "#"; |
| 56 | |
| 57 | const char line_separator_chars[] = ";"; |
| 58 | |
| 59 | /* This array holds the chars that only start a comment at the beginning of |
| 60 | a line. */ |
| 61 | const char line_comment_chars[] = "#"; |
| 62 | |
| 63 | const int md_reloc_size = 8; /* Size of relocation record. */ |
| 64 | |
| 65 | /* Chars that can be used to separate mant |
| 66 | from exp in floating point numbers. */ |
| 67 | const char EXP_CHARS[] = "eE"; |
| 68 | |
| 69 | /* Chars that mean this number is a floating point constant |
| 70 | As in 0f12.456 |
| 71 | or 0d1.2345e12. */ |
| 72 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
| 73 | |
| 74 | /* INST_PC_OFFSET and INST_NO_OFFSET are 0 and 1. */ |
| 75 | #define UNDEFINED_PC_OFFSET 2 |
| 76 | #define DEFINED_ABS_SEGMENT 3 |
| 77 | #define DEFINED_PC_OFFSET 4 |
| 78 | #define DEFINED_RO_SEGMENT 5 |
| 79 | #define DEFINED_RW_SEGMENT 6 |
| 80 | #define LARGE_DEFINED_PC_OFFSET 7 |
| 81 | #define GOT_OFFSET 8 |
| 82 | #define PLT_OFFSET 9 |
| 83 | #define GOTOFF_OFFSET 10 |
| 84 | #define TLSGD_OFFSET 11 |
| 85 | #define TLSLD_OFFSET 12 |
| 86 | #define TLSDTPMOD_OFFSET 13 |
| 87 | #define TLSDTPREL_OFFSET 14 |
| 88 | #define TLSGOTTPREL_OFFSET 15 |
| 89 | #define TLSTPREL_OFFSET 16 |
| 90 | |
| 91 | /* Initialize the relax table. */ |
| 92 | const relax_typeS md_relax_table[] = |
| 93 | { |
| 94 | { 1, 1, 0, 0 }, /* 0: Unused. */ |
| 95 | { 1, 1, 0, 0 }, /* 1: Unused. */ |
| 96 | { 1, 1, 0, 0 }, /* 2: Unused. */ |
| 97 | { 1, 1, 0, 0 }, /* 3: Unused. */ |
| 98 | { 32767, -32768, INST_WORD_SIZE, LARGE_DEFINED_PC_OFFSET }, /* 4: DEFINED_PC_OFFSET. */ |
| 99 | { 1, 1, 0, 0 }, /* 5: Unused. */ |
| 100 | { 1, 1, 0, 0 }, /* 6: Unused. */ |
| 101 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*2, 0 }, /* 7: LARGE_DEFINED_PC_OFFSET. */ |
| 102 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*2, 0 }, /* 8: GOT_OFFSET. */ |
| 103 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*2, 0 }, /* 9: PLT_OFFSET. */ |
| 104 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*2, 0 }, /* 10: GOTOFF_OFFSET. */ |
| 105 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*2, 0 }, /* 11: TLSGD_OFFSET. */ |
| 106 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*2, 0 }, /* 12: TLSLD_OFFSET. */ |
| 107 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*1, 0 }, /* 13: TLSDTPMOD_OFFSET. */ |
| 108 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*2, 0 }, /* 14: TLSDTPREL_OFFSET. */ |
| 109 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*2, 0 }, /* 15: TLSGOTTPREL_OFFSET. */ |
| 110 | { 0x7fffffff, 0x80000000, INST_WORD_SIZE*2, 0 } /* 16: TLSTPREL_OFFSET. */ |
| 111 | }; |
| 112 | |
| 113 | static struct hash_control * opcode_hash_control; /* Opcode mnemonics. */ |
| 114 | |
| 115 | static segT sbss_segment = 0; /* Small bss section. */ |
| 116 | static segT sbss2_segment = 0; /* Section not used. */ |
| 117 | static segT sdata_segment = 0; /* Small data section. */ |
| 118 | static segT sdata2_segment = 0; /* Small read-only section. */ |
| 119 | static segT rodata_segment = 0; /* read-only section. */ |
| 120 | |
| 121 | /* Generate a symbol for stabs information. */ |
| 122 | |
| 123 | void |
| 124 | microblaze_generate_symbol (char *sym) |
| 125 | { |
| 126 | #define MICROBLAZE_FAKE_LABEL_NAME "XL0\001" |
| 127 | static int microblaze_label_count; |
| 128 | sprintf (sym, "%sL%d", MICROBLAZE_FAKE_LABEL_NAME, microblaze_label_count); |
| 129 | ++microblaze_label_count; |
| 130 | } |
| 131 | |
| 132 | /* Handle the section changing pseudo-ops. */ |
| 133 | |
| 134 | static void |
| 135 | microblaze_s_text (int ignore ATTRIBUTE_UNUSED) |
| 136 | { |
| 137 | #ifdef OBJ_ELF |
| 138 | obj_elf_text (ignore); |
| 139 | #else |
| 140 | s_text (ignore); |
| 141 | #endif |
| 142 | } |
| 143 | |
| 144 | static void |
| 145 | microblaze_s_data (int ignore ATTRIBUTE_UNUSED) |
| 146 | { |
| 147 | #ifdef OBJ_ELF |
| 148 | obj_elf_change_section (".data", SHT_PROGBITS, SHF_ALLOC+SHF_WRITE, 0, 0, 0, 0); |
| 149 | #else |
| 150 | s_data (ignore); |
| 151 | #endif |
| 152 | } |
| 153 | |
| 154 | /* Things in the .sdata segment are always considered to be in the small data section. */ |
| 155 | |
| 156 | static void |
| 157 | microblaze_s_sdata (int ignore ATTRIBUTE_UNUSED) |
| 158 | { |
| 159 | #ifdef OBJ_ELF |
| 160 | obj_elf_change_section (".sdata", SHT_PROGBITS, SHF_ALLOC+SHF_WRITE, 0, 0, 0, 0); |
| 161 | #else |
| 162 | s_data (ignore); |
| 163 | #endif |
| 164 | } |
| 165 | |
| 166 | /* Pseudo op to make file scope bss items. */ |
| 167 | |
| 168 | static void |
| 169 | microblaze_s_lcomm (int xxx ATTRIBUTE_UNUSED) |
| 170 | { |
| 171 | char *name; |
| 172 | char c; |
| 173 | char *p; |
| 174 | offsetT size; |
| 175 | symbolS *symbolP; |
| 176 | offsetT align; |
| 177 | char *pfrag; |
| 178 | int align2; |
| 179 | segT current_seg = now_seg; |
| 180 | subsegT current_subseg = now_subseg; |
| 181 | |
| 182 | c = get_symbol_name (&name); |
| 183 | |
| 184 | /* Just after name is now '\0'. */ |
| 185 | p = input_line_pointer; |
| 186 | (void) restore_line_pointer (c); |
| 187 | SKIP_WHITESPACE (); |
| 188 | if (*input_line_pointer != ',') |
| 189 | { |
| 190 | as_bad (_("Expected comma after symbol-name: rest of line ignored.")); |
| 191 | ignore_rest_of_line (); |
| 192 | return; |
| 193 | } |
| 194 | |
| 195 | input_line_pointer++; /* skip ',' */ |
| 196 | if ((size = get_absolute_expression ()) < 0) |
| 197 | { |
| 198 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size); |
| 199 | ignore_rest_of_line (); |
| 200 | return; |
| 201 | } |
| 202 | |
| 203 | /* The third argument to .lcomm is the alignment. */ |
| 204 | if (*input_line_pointer != ',') |
| 205 | align = 8; |
| 206 | else |
| 207 | { |
| 208 | ++input_line_pointer; |
| 209 | align = get_absolute_expression (); |
| 210 | if (align <= 0) |
| 211 | { |
| 212 | as_warn (_("ignoring bad alignment")); |
| 213 | align = 8; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | *p = 0; |
| 218 | symbolP = symbol_find_or_make (name); |
| 219 | *p = c; |
| 220 | |
| 221 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) |
| 222 | { |
| 223 | as_bad (_("Ignoring attempt to re-define symbol `%s'."), |
| 224 | S_GET_NAME (symbolP)); |
| 225 | ignore_rest_of_line (); |
| 226 | return; |
| 227 | } |
| 228 | |
| 229 | if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size) |
| 230 | { |
| 231 | as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."), |
| 232 | S_GET_NAME (symbolP), |
| 233 | (long) S_GET_VALUE (symbolP), |
| 234 | (long) size); |
| 235 | |
| 236 | ignore_rest_of_line (); |
| 237 | return; |
| 238 | } |
| 239 | |
| 240 | /* Allocate_bss. */ |
| 241 | if (align) |
| 242 | { |
| 243 | /* Convert to a power of 2 alignment. */ |
| 244 | for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2); |
| 245 | if (align != 1) |
| 246 | { |
| 247 | as_bad (_("Common alignment not a power of 2")); |
| 248 | ignore_rest_of_line (); |
| 249 | return; |
| 250 | } |
| 251 | } |
| 252 | else |
| 253 | align2 = 0; |
| 254 | |
| 255 | record_alignment (current_seg, align2); |
| 256 | subseg_set (current_seg, current_subseg); |
| 257 | if (align2) |
| 258 | frag_align (align2, 0, 0); |
| 259 | if (S_GET_SEGMENT (symbolP) == current_seg) |
| 260 | symbol_get_frag (symbolP)->fr_symbol = 0; |
| 261 | symbol_set_frag (symbolP, frag_now); |
| 262 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size, |
| 263 | (char *) 0); |
| 264 | *pfrag = 0; |
| 265 | S_SET_SIZE (symbolP, size); |
| 266 | S_SET_SEGMENT (symbolP, current_seg); |
| 267 | subseg_set (current_seg, current_subseg); |
| 268 | demand_empty_rest_of_line (); |
| 269 | } |
| 270 | |
| 271 | static void |
| 272 | microblaze_s_rdata (int localvar) |
| 273 | { |
| 274 | #ifdef OBJ_ELF |
| 275 | if (localvar == 0) |
| 276 | { |
| 277 | /* rodata. */ |
| 278 | obj_elf_change_section (".rodata", SHT_PROGBITS, SHF_ALLOC, 0, 0, 0, 0); |
| 279 | if (rodata_segment == 0) |
| 280 | rodata_segment = subseg_new (".rodata", 0); |
| 281 | } |
| 282 | else |
| 283 | { |
| 284 | /* 1 .sdata2. */ |
| 285 | obj_elf_change_section (".sdata2", SHT_PROGBITS, SHF_ALLOC, 0, 0, 0, 0); |
| 286 | } |
| 287 | #else |
| 288 | s_data (ignore); |
| 289 | #endif |
| 290 | } |
| 291 | |
| 292 | static void |
| 293 | microblaze_s_bss (int localvar) |
| 294 | { |
| 295 | #ifdef OBJ_ELF |
| 296 | if (localvar == 0) /* bss. */ |
| 297 | obj_elf_change_section (".bss", SHT_NOBITS, SHF_ALLOC+SHF_WRITE, 0, 0, 0, 0); |
| 298 | else if (localvar == 1) |
| 299 | { |
| 300 | /* sbss. */ |
| 301 | obj_elf_change_section (".sbss", SHT_NOBITS, SHF_ALLOC+SHF_WRITE, 0, 0, 0, 0); |
| 302 | if (sbss_segment == 0) |
| 303 | sbss_segment = subseg_new (".sbss", 0); |
| 304 | } |
| 305 | #else |
| 306 | s_data (ignore); |
| 307 | #endif |
| 308 | } |
| 309 | |
| 310 | /* endp_p is always 1 as this func is called only for .end <funcname> |
| 311 | This func consumes the <funcname> and calls regular processing |
| 312 | s_func(1) with arg 1 (1 for end). */ |
| 313 | |
| 314 | static void |
| 315 | microblaze_s_func (int end_p ATTRIBUTE_UNUSED) |
| 316 | { |
| 317 | char *name; |
| 318 | restore_line_pointer (get_symbol_name (&name)); |
| 319 | s_func (1); |
| 320 | } |
| 321 | |
| 322 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. */ |
| 323 | |
| 324 | static void |
| 325 | microblaze_s_weakext (int ignore ATTRIBUTE_UNUSED) |
| 326 | { |
| 327 | char *name; |
| 328 | int c; |
| 329 | symbolS *symbolP; |
| 330 | expressionS exp; |
| 331 | |
| 332 | c = get_symbol_name (&name); |
| 333 | symbolP = symbol_find_or_make (name); |
| 334 | S_SET_WEAK (symbolP); |
| 335 | (void) restore_line_pointer (c); |
| 336 | |
| 337 | SKIP_WHITESPACE (); |
| 338 | |
| 339 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
| 340 | { |
| 341 | if (S_IS_DEFINED (symbolP)) |
| 342 | { |
| 343 | as_bad ("Ignoring attempt to redefine symbol `%s'.", |
| 344 | S_GET_NAME (symbolP)); |
| 345 | ignore_rest_of_line (); |
| 346 | return; |
| 347 | } |
| 348 | |
| 349 | if (*input_line_pointer == ',') |
| 350 | { |
| 351 | ++input_line_pointer; |
| 352 | SKIP_WHITESPACE (); |
| 353 | } |
| 354 | |
| 355 | expression (&exp); |
| 356 | if (exp.X_op != O_symbol) |
| 357 | { |
| 358 | as_bad ("bad .weakext directive"); |
| 359 | ignore_rest_of_line (); |
| 360 | return; |
| 361 | } |
| 362 | symbol_set_value_expression (symbolP, &exp); |
| 363 | } |
| 364 | |
| 365 | demand_empty_rest_of_line (); |
| 366 | } |
| 367 | |
| 368 | /* This table describes all the machine specific pseudo-ops the assembler |
| 369 | has to support. The fields are: |
| 370 | Pseudo-op name without dot |
| 371 | Function to call to execute this pseudo-op |
| 372 | Integer arg to pass to the function. */ |
| 373 | /* If the pseudo-op is not found in this table, it searches in the obj-elf.c, |
| 374 | and then in the read.c table. */ |
| 375 | const pseudo_typeS md_pseudo_table[] = |
| 376 | { |
| 377 | {"lcomm", microblaze_s_lcomm, 1}, |
| 378 | {"data", microblaze_s_data, 0}, |
| 379 | {"data8", cons, 1}, /* Same as byte. */ |
| 380 | {"data16", cons, 2}, /* Same as hword. */ |
| 381 | {"data32", cons, 4}, /* Same as word. */ |
| 382 | {"ent", s_func, 0}, /* Treat ent as function entry point. */ |
| 383 | {"end", microblaze_s_func, 1}, /* Treat end as function end point. */ |
| 384 | {"gpword", s_rva, 4}, /* gpword label => store resolved label address in data section. */ |
| 385 | {"weakext", microblaze_s_weakext, 0}, |
| 386 | {"rodata", microblaze_s_rdata, 0}, |
| 387 | {"sdata2", microblaze_s_rdata, 1}, |
| 388 | {"sdata", microblaze_s_sdata, 0}, |
| 389 | {"bss", microblaze_s_bss, 0}, |
| 390 | {"sbss", microblaze_s_bss, 1}, |
| 391 | {"text", microblaze_s_text, 0}, |
| 392 | {"word", cons, 4}, |
| 393 | {"frame", s_ignore, 0}, |
| 394 | {"mask", s_ignore, 0}, /* Emitted by gcc. */ |
| 395 | {NULL, NULL, 0} |
| 396 | }; |
| 397 | |
| 398 | /* This function is called once, at assembler startup time. This should |
| 399 | set up all the tables, etc that the MD part of the assembler needs. */ |
| 400 | |
| 401 | void |
| 402 | md_begin (void) |
| 403 | { |
| 404 | struct op_code_struct * opcode; |
| 405 | |
| 406 | opcode_hash_control = hash_new (); |
| 407 | |
| 408 | /* Insert unique names into hash table. */ |
| 409 | for (opcode = opcodes; opcode->name; opcode ++) |
| 410 | hash_insert (opcode_hash_control, opcode->name, (char *) opcode); |
| 411 | } |
| 412 | |
| 413 | /* Try to parse a reg name. */ |
| 414 | |
| 415 | static char * |
| 416 | parse_reg (char * s, unsigned * reg) |
| 417 | { |
| 418 | unsigned tmpreg = 0; |
| 419 | |
| 420 | /* Strip leading whitespace. */ |
| 421 | while (ISSPACE (* s)) |
| 422 | ++ s; |
| 423 | |
| 424 | if (strncasecmp (s, "rpc", 3) == 0) |
| 425 | { |
| 426 | *reg = REG_PC; |
| 427 | return s + 3; |
| 428 | } |
| 429 | else if (strncasecmp (s, "rmsr", 4) == 0) |
| 430 | { |
| 431 | *reg = REG_MSR; |
| 432 | return s + 4; |
| 433 | } |
| 434 | else if (strncasecmp (s, "rear", 4) == 0) |
| 435 | { |
| 436 | *reg = REG_EAR; |
| 437 | return s + 4; |
| 438 | } |
| 439 | else if (strncasecmp (s, "resr", 4) == 0) |
| 440 | { |
| 441 | *reg = REG_ESR; |
| 442 | return s + 4; |
| 443 | } |
| 444 | else if (strncasecmp (s, "rfsr", 4) == 0) |
| 445 | { |
| 446 | *reg = REG_FSR; |
| 447 | return s + 4; |
| 448 | } |
| 449 | else if (strncasecmp (s, "rbtr", 4) == 0) |
| 450 | { |
| 451 | *reg = REG_BTR; |
| 452 | return s + 4; |
| 453 | } |
| 454 | else if (strncasecmp (s, "redr", 4) == 0) |
| 455 | { |
| 456 | *reg = REG_EDR; |
| 457 | return s + 4; |
| 458 | } |
| 459 | /* MMU registers start. */ |
| 460 | else if (strncasecmp (s, "rpid", 4) == 0) |
| 461 | { |
| 462 | *reg = REG_PID; |
| 463 | return s + 4; |
| 464 | } |
| 465 | else if (strncasecmp (s, "rzpr", 4) == 0) |
| 466 | { |
| 467 | *reg = REG_ZPR; |
| 468 | return s + 4; |
| 469 | } |
| 470 | else if (strncasecmp (s, "rtlbx", 5) == 0) |
| 471 | { |
| 472 | *reg = REG_TLBX; |
| 473 | return s + 5; |
| 474 | } |
| 475 | else if (strncasecmp (s, "rtlblo", 6) == 0) |
| 476 | { |
| 477 | *reg = REG_TLBLO; |
| 478 | return s + 6; |
| 479 | } |
| 480 | else if (strncasecmp (s, "rtlbhi", 6) == 0) |
| 481 | { |
| 482 | *reg = REG_TLBHI; |
| 483 | return s + 6; |
| 484 | } |
| 485 | else if (strncasecmp (s, "rtlbsx", 6) == 0) |
| 486 | { |
| 487 | *reg = REG_TLBSX; |
| 488 | return s + 6; |
| 489 | } |
| 490 | /* MMU registers end. */ |
| 491 | else if (strncasecmp (s, "rpvr", 4) == 0) |
| 492 | { |
| 493 | if (ISDIGIT (s[4]) && ISDIGIT (s[5])) |
| 494 | { |
| 495 | tmpreg = (s[4]-'0')*10 + s[5] - '0'; |
| 496 | s += 6; |
| 497 | } |
| 498 | |
| 499 | else if (ISDIGIT (s[4])) |
| 500 | { |
| 501 | tmpreg = s[4] - '0'; |
| 502 | s += 5; |
| 503 | } |
| 504 | else |
| 505 | as_bad (_("register expected, but saw '%.6s'"), s); |
| 506 | if ((int) tmpreg >= MIN_PVR_REGNUM && tmpreg <= MAX_PVR_REGNUM) |
| 507 | *reg = REG_PVR + tmpreg; |
| 508 | else |
| 509 | { |
| 510 | as_bad (_("Invalid register number at '%.6s'"), s); |
| 511 | *reg = REG_PVR; |
| 512 | } |
| 513 | return s; |
| 514 | } |
| 515 | else if (strncasecmp (s, "rsp", 3) == 0) |
| 516 | { |
| 517 | *reg = REG_SP; |
| 518 | return s + 3; |
| 519 | } |
| 520 | else if (strncasecmp (s, "rfsl", 4) == 0) |
| 521 | { |
| 522 | if (ISDIGIT (s[4]) && ISDIGIT (s[5])) |
| 523 | { |
| 524 | tmpreg = (s[4] - '0') * 10 + s[5] - '0'; |
| 525 | s += 6; |
| 526 | } |
| 527 | else if (ISDIGIT (s[4])) |
| 528 | { |
| 529 | tmpreg = s[4] - '0'; |
| 530 | s += 5; |
| 531 | } |
| 532 | else |
| 533 | as_bad (_("register expected, but saw '%.6s'"), s); |
| 534 | |
| 535 | if ((int) tmpreg >= MIN_REGNUM && tmpreg <= MAX_REGNUM) |
| 536 | *reg = tmpreg; |
| 537 | else |
| 538 | { |
| 539 | as_bad (_("Invalid register number at '%.6s'"), s); |
| 540 | *reg = 0; |
| 541 | } |
| 542 | return s; |
| 543 | } |
| 544 | /* Stack protection registers. */ |
| 545 | else if (strncasecmp (s, "rshr", 4) == 0) |
| 546 | { |
| 547 | *reg = REG_SHR; |
| 548 | return s + 4; |
| 549 | } |
| 550 | else if (strncasecmp (s, "rslr", 4) == 0) |
| 551 | { |
| 552 | *reg = REG_SLR; |
| 553 | return s + 4; |
| 554 | } |
| 555 | else |
| 556 | { |
| 557 | if (TOLOWER (s[0]) == 'r') |
| 558 | { |
| 559 | if (ISDIGIT (s[1]) && ISDIGIT (s[2])) |
| 560 | { |
| 561 | tmpreg = (s[1] - '0') * 10 + s[2] - '0'; |
| 562 | s += 3; |
| 563 | } |
| 564 | else if (ISDIGIT (s[1])) |
| 565 | { |
| 566 | tmpreg = s[1] - '0'; |
| 567 | s += 2; |
| 568 | } |
| 569 | else |
| 570 | as_bad (_("register expected, but saw '%.6s'"), s); |
| 571 | |
| 572 | if ((int)tmpreg >= MIN_REGNUM && tmpreg <= MAX_REGNUM) |
| 573 | *reg = tmpreg; |
| 574 | else |
| 575 | { |
| 576 | as_bad (_("Invalid register number at '%.6s'"), s); |
| 577 | *reg = 0; |
| 578 | } |
| 579 | return s; |
| 580 | } |
| 581 | } |
| 582 | as_bad (_("register expected, but saw '%.6s'"), s); |
| 583 | *reg = 0; |
| 584 | return s; |
| 585 | } |
| 586 | |
| 587 | static char * |
| 588 | parse_exp (char *s, expressionS *e) |
| 589 | { |
| 590 | char *save; |
| 591 | char *new_pointer; |
| 592 | |
| 593 | /* Skip whitespace. */ |
| 594 | while (ISSPACE (* s)) |
| 595 | ++ s; |
| 596 | |
| 597 | save = input_line_pointer; |
| 598 | input_line_pointer = s; |
| 599 | |
| 600 | expression (e); |
| 601 | |
| 602 | if (e->X_op == O_absent) |
| 603 | as_fatal (_("missing operand")); |
| 604 | |
| 605 | new_pointer = input_line_pointer; |
| 606 | input_line_pointer = save; |
| 607 | |
| 608 | return new_pointer; |
| 609 | } |
| 610 | |
| 611 | /* Symbol modifiers (@GOT, @PLT, @GOTOFF). */ |
| 612 | #define IMM_NONE 0 |
| 613 | #define IMM_GOT 1 |
| 614 | #define IMM_PLT 2 |
| 615 | #define IMM_GOTOFF 3 |
| 616 | #define IMM_TLSGD 4 |
| 617 | #define IMM_TLSLD 5 |
| 618 | #define IMM_TLSDTPMOD 6 |
| 619 | #define IMM_TLSDTPREL 7 |
| 620 | #define IMM_TLSTPREL 8 |
| 621 | #define IMM_MAX 9 |
| 622 | |
| 623 | struct imm_type { |
| 624 | const char *isuffix; /* Suffix String */ |
| 625 | int itype; /* Suffix Type */ |
| 626 | int otype; /* Offset Type */ |
| 627 | }; |
| 628 | |
| 629 | /* These are NOT in assending order of type, GOTOFF is ahead to make |
| 630 | sure @GOTOFF does not get matched with @GOT */ |
| 631 | static struct imm_type imm_types[] = { |
| 632 | { "NONE", IMM_NONE , 0 }, |
| 633 | { "GOTOFF", IMM_GOTOFF , GOTOFF_OFFSET }, |
| 634 | { "GOT", IMM_GOT , GOT_OFFSET }, |
| 635 | { "PLT", IMM_PLT , PLT_OFFSET }, |
| 636 | { "TLSGD", IMM_TLSGD , TLSGD_OFFSET }, |
| 637 | { "TLSLDM", IMM_TLSLD, TLSLD_OFFSET }, |
| 638 | { "TLSDTPMOD", IMM_TLSDTPMOD, TLSDTPMOD_OFFSET }, |
| 639 | { "TLSDTPREL", IMM_TLSDTPREL, TLSDTPREL_OFFSET }, |
| 640 | { "TLSTPREL", IMM_TLSTPREL, TLSTPREL_OFFSET } |
| 641 | }; |
| 642 | |
| 643 | static int |
| 644 | match_imm (const char *s, int *ilen) |
| 645 | { |
| 646 | int i; |
| 647 | int slen; |
| 648 | |
| 649 | /* Check for matching suffix */ |
| 650 | for (i = 1; i < IMM_MAX; i++) |
| 651 | { |
| 652 | slen = strlen (imm_types[i].isuffix); |
| 653 | |
| 654 | if (strncmp (imm_types[i].isuffix, s, slen) == 0) |
| 655 | { |
| 656 | *ilen = slen; |
| 657 | return imm_types[i].itype; |
| 658 | } |
| 659 | } /* for */ |
| 660 | *ilen = 0; |
| 661 | return 0; |
| 662 | } |
| 663 | |
| 664 | static int |
| 665 | get_imm_otype (int itype) |
| 666 | { |
| 667 | int i, otype; |
| 668 | |
| 669 | otype = 0; |
| 670 | /* Check for matching itype */ |
| 671 | for (i = 1; i < IMM_MAX; i++) |
| 672 | { |
| 673 | if (imm_types[i].itype == itype) |
| 674 | { |
| 675 | otype = imm_types[i].otype; |
| 676 | break; |
| 677 | } |
| 678 | } |
| 679 | return otype; |
| 680 | } |
| 681 | |
| 682 | static symbolS * GOT_symbol; |
| 683 | |
| 684 | #define GOT_SYMBOL_NAME "_GLOBAL_OFFSET_TABLE_" |
| 685 | |
| 686 | static char * |
| 687 | parse_imm (char * s, expressionS * e, offsetT min, offsetT max) |
| 688 | { |
| 689 | char *new_pointer; |
| 690 | char *atp; |
| 691 | int itype, ilen; |
| 692 | |
| 693 | ilen = 0; |
| 694 | |
| 695 | /* Find the start of "@GOT" or "@PLT" suffix (if any) */ |
| 696 | for (atp = s; *atp != '@'; atp++) |
| 697 | if (is_end_of_line[(unsigned char) *atp]) |
| 698 | break; |
| 699 | |
| 700 | if (*atp == '@') |
| 701 | { |
| 702 | itype = match_imm (atp + 1, &ilen); |
| 703 | if (itype != 0) |
| 704 | { |
| 705 | *atp = 0; |
| 706 | e->X_md = itype; |
| 707 | } |
| 708 | else |
| 709 | { |
| 710 | atp = NULL; |
| 711 | e->X_md = 0; |
| 712 | ilen = 0; |
| 713 | } |
| 714 | *atp = 0; |
| 715 | } |
| 716 | else |
| 717 | { |
| 718 | atp = NULL; |
| 719 | e->X_md = 0; |
| 720 | } |
| 721 | |
| 722 | if (atp && !GOT_symbol) |
| 723 | { |
| 724 | GOT_symbol = symbol_find_or_make (GOT_SYMBOL_NAME); |
| 725 | } |
| 726 | |
| 727 | new_pointer = parse_exp (s, e); |
| 728 | |
| 729 | if (!GOT_symbol && ! strncmp (s, GOT_SYMBOL_NAME, 20)) |
| 730 | { |
| 731 | GOT_symbol = symbol_find_or_make (GOT_SYMBOL_NAME); |
| 732 | } |
| 733 | |
| 734 | if (e->X_op == O_absent) |
| 735 | ; /* An error message has already been emitted. */ |
| 736 | else if ((e->X_op != O_constant && e->X_op != O_symbol) ) |
| 737 | as_fatal (_("operand must be a constant or a label")); |
| 738 | else if (e->X_op == O_constant) |
| 739 | { |
| 740 | /* Special case: sign extend negative 32-bit values to offsetT size. */ |
| 741 | if ((e->X_add_number >> 31) == 1) |
| 742 | e->X_add_number |= -((addressT) (1U << 31)); |
| 743 | |
| 744 | if (e->X_add_number < min || e->X_add_number > max) |
| 745 | { |
| 746 | as_fatal (_("operand must be absolute in range %lx..%lx, not %lx"), |
| 747 | (long) min, (long) max, (long) e->X_add_number); |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | if (atp) |
| 752 | { |
| 753 | *atp = '@'; /* restore back (needed?) */ |
| 754 | if (new_pointer >= atp) |
| 755 | new_pointer += ilen + 1; /* sizeof (imm_suffix) + 1 for '@' */ |
| 756 | } |
| 757 | return new_pointer; |
| 758 | } |
| 759 | |
| 760 | static char * |
| 761 | check_got (int * got_type, int * got_len) |
| 762 | { |
| 763 | char *new_pointer; |
| 764 | char *atp; |
| 765 | char *past_got; |
| 766 | int first, second; |
| 767 | char *tmpbuf; |
| 768 | |
| 769 | /* Find the start of "@GOT" or "@PLT" suffix (if any). */ |
| 770 | for (atp = input_line_pointer; *atp != '@'; atp++) |
| 771 | if (is_end_of_line[(unsigned char) *atp]) |
| 772 | return NULL; |
| 773 | |
| 774 | if (strncmp (atp + 1, "GOTOFF", 5) == 0) |
| 775 | { |
| 776 | *got_len = 6; |
| 777 | *got_type = IMM_GOTOFF; |
| 778 | } |
| 779 | else if (strncmp (atp + 1, "GOT", 3) == 0) |
| 780 | { |
| 781 | *got_len = 3; |
| 782 | *got_type = IMM_GOT; |
| 783 | } |
| 784 | else if (strncmp (atp + 1, "PLT", 3) == 0) |
| 785 | { |
| 786 | *got_len = 3; |
| 787 | *got_type = IMM_PLT; |
| 788 | } |
| 789 | else |
| 790 | return NULL; |
| 791 | |
| 792 | if (!GOT_symbol) |
| 793 | GOT_symbol = symbol_find_or_make (GOT_SYMBOL_NAME); |
| 794 | |
| 795 | first = atp - input_line_pointer; |
| 796 | |
| 797 | past_got = atp + *got_len + 1; |
| 798 | for (new_pointer = past_got; !is_end_of_line[(unsigned char) *new_pointer++];) |
| 799 | ; |
| 800 | second = new_pointer - past_got; |
| 801 | /* One extra byte for ' ' and one for NUL. */ |
| 802 | tmpbuf = XNEWVEC (char, first + second + 2); |
| 803 | memcpy (tmpbuf, input_line_pointer, first); |
| 804 | tmpbuf[first] = ' '; /* @GOTOFF is replaced with a single space. */ |
| 805 | memcpy (tmpbuf + first + 1, past_got, second); |
| 806 | tmpbuf[first + second + 1] = '\0'; |
| 807 | |
| 808 | return tmpbuf; |
| 809 | } |
| 810 | |
| 811 | extern bfd_reloc_code_real_type |
| 812 | parse_cons_expression_microblaze (expressionS *exp, int size) |
| 813 | { |
| 814 | if (size == 4) |
| 815 | { |
| 816 | /* Handle @GOTOFF et.al. */ |
| 817 | char *save, *gotfree_copy; |
| 818 | int got_len, got_type; |
| 819 | |
| 820 | save = input_line_pointer; |
| 821 | gotfree_copy = check_got (& got_type, & got_len); |
| 822 | if (gotfree_copy) |
| 823 | input_line_pointer = gotfree_copy; |
| 824 | |
| 825 | expression (exp); |
| 826 | |
| 827 | if (gotfree_copy) |
| 828 | { |
| 829 | exp->X_md = got_type; |
| 830 | input_line_pointer = save + (input_line_pointer - gotfree_copy) |
| 831 | + got_len; |
| 832 | free (gotfree_copy); |
| 833 | } |
| 834 | } |
| 835 | else |
| 836 | expression (exp); |
| 837 | return BFD_RELOC_NONE; |
| 838 | } |
| 839 | |
| 840 | /* This is the guts of the machine-dependent assembler. STR points to a |
| 841 | machine dependent instruction. This function is supposed to emit |
| 842 | the frags/bytes it assembles to. */ |
| 843 | |
| 844 | static const char * str_microblaze_ro_anchor = "RO"; |
| 845 | static const char * str_microblaze_rw_anchor = "RW"; |
| 846 | |
| 847 | static bfd_boolean |
| 848 | check_spl_reg (unsigned * reg) |
| 849 | { |
| 850 | if ((*reg == REG_MSR) || (*reg == REG_PC) |
| 851 | || (*reg == REG_EAR) || (*reg == REG_ESR) |
| 852 | || (*reg == REG_FSR) || (*reg == REG_BTR) || (*reg == REG_EDR) |
| 853 | || (*reg == REG_PID) || (*reg == REG_ZPR) |
| 854 | || (*reg == REG_TLBX) || (*reg == REG_TLBLO) |
| 855 | || (*reg == REG_TLBHI) || (*reg == REG_TLBSX) |
| 856 | || (*reg == REG_SHR) || (*reg == REG_SLR) |
| 857 | || (*reg >= REG_PVR+MIN_PVR_REGNUM && *reg <= REG_PVR+MAX_PVR_REGNUM)) |
| 858 | return TRUE; |
| 859 | |
| 860 | return FALSE; |
| 861 | } |
| 862 | |
| 863 | /* Here we decide which fixups can be adjusted to make them relative to |
| 864 | the beginning of the section instead of the symbol. Basically we need |
| 865 | to make sure that the dynamic relocations are done correctly, so in |
| 866 | some cases we force the original symbol to be used. */ |
| 867 | |
| 868 | int |
| 869 | tc_microblaze_fix_adjustable (struct fix *fixP) |
| 870 | { |
| 871 | if (GOT_symbol && fixP->fx_subsy == GOT_symbol) |
| 872 | return 0; |
| 873 | |
| 874 | if (fixP->fx_r_type == BFD_RELOC_MICROBLAZE_64_GOTOFF |
| 875 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_32_GOTOFF |
| 876 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_64_GOT |
| 877 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_64_PLT |
| 878 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_64_TLSGD |
| 879 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_64_TLSLD |
| 880 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_32_TLSDTPMOD |
| 881 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_32_TLSDTPREL |
| 882 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_64_TLSDTPREL |
| 883 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_64_TLSGOTTPREL |
| 884 | || fixP->fx_r_type == BFD_RELOC_MICROBLAZE_64_TLSTPREL) |
| 885 | return 0; |
| 886 | |
| 887 | return 1; |
| 888 | } |
| 889 | |
| 890 | void |
| 891 | md_assemble (char * str) |
| 892 | { |
| 893 | char * op_start; |
| 894 | char * op_end; |
| 895 | struct op_code_struct * opcode, *opcode1; |
| 896 | char * output = NULL; |
| 897 | int nlen = 0; |
| 898 | int i; |
| 899 | unsigned long inst, inst1; |
| 900 | unsigned reg1; |
| 901 | unsigned reg2; |
| 902 | unsigned reg3; |
| 903 | unsigned isize; |
| 904 | unsigned int immed, temp; |
| 905 | expressionS exp; |
| 906 | char name[20]; |
| 907 | |
| 908 | /* Drop leading whitespace. */ |
| 909 | while (ISSPACE (* str)) |
| 910 | str ++; |
| 911 | |
| 912 | /* Find the op code end. */ |
| 913 | for (op_start = op_end = str; |
| 914 | *op_end && !is_end_of_line[(unsigned char) *op_end] && *op_end != ' '; |
| 915 | op_end++) |
| 916 | { |
| 917 | name[nlen] = op_start[nlen]; |
| 918 | nlen++; |
| 919 | if (nlen == sizeof (name) - 1) |
| 920 | break; |
| 921 | } |
| 922 | |
| 923 | name [nlen] = 0; |
| 924 | |
| 925 | if (nlen == 0) |
| 926 | { |
| 927 | as_bad (_("can't find opcode ")); |
| 928 | return; |
| 929 | } |
| 930 | |
| 931 | opcode = (struct op_code_struct *) hash_find (opcode_hash_control, name); |
| 932 | if (opcode == NULL) |
| 933 | { |
| 934 | as_bad (_("unknown opcode \"%s\""), name); |
| 935 | return; |
| 936 | } |
| 937 | |
| 938 | inst = opcode->bit_sequence; |
| 939 | isize = 4; |
| 940 | |
| 941 | switch (opcode->inst_type) |
| 942 | { |
| 943 | case INST_TYPE_RD_R1_R2: |
| 944 | if (strcmp (op_end, "")) |
| 945 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 946 | else |
| 947 | { |
| 948 | as_fatal (_("Error in statement syntax")); |
| 949 | reg1 = 0; |
| 950 | } |
| 951 | if (strcmp (op_end, "")) |
| 952 | op_end = parse_reg (op_end + 1, ®2); /* Get r1. */ |
| 953 | else |
| 954 | { |
| 955 | as_fatal (_("Error in statement syntax")); |
| 956 | reg2 = 0; |
| 957 | } |
| 958 | if (strcmp (op_end, "")) |
| 959 | op_end = parse_reg (op_end + 1, ®3); /* Get r2. */ |
| 960 | else |
| 961 | { |
| 962 | as_fatal (_("Error in statement syntax")); |
| 963 | reg3 = 0; |
| 964 | } |
| 965 | |
| 966 | /* Check for spl registers. */ |
| 967 | if (check_spl_reg (& reg1)) |
| 968 | as_fatal (_("Cannot use special register with this instruction")); |
| 969 | if (check_spl_reg (& reg2)) |
| 970 | as_fatal (_("Cannot use special register with this instruction")); |
| 971 | if (check_spl_reg (& reg3)) |
| 972 | as_fatal (_("Cannot use special register with this instruction")); |
| 973 | |
| 974 | if (streq (name, "sub")) |
| 975 | { |
| 976 | /* sub rd, r1, r2 becomes rsub rd, r2, r1. */ |
| 977 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 978 | inst |= (reg3 << RA_LOW) & RA_MASK; |
| 979 | inst |= (reg2 << RB_LOW) & RB_MASK; |
| 980 | } |
| 981 | else |
| 982 | { |
| 983 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 984 | inst |= (reg2 << RA_LOW) & RA_MASK; |
| 985 | inst |= (reg3 << RB_LOW) & RB_MASK; |
| 986 | } |
| 987 | output = frag_more (isize); |
| 988 | break; |
| 989 | |
| 990 | case INST_TYPE_RD_R1_IMM: |
| 991 | if (strcmp (op_end, "")) |
| 992 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 993 | else |
| 994 | { |
| 995 | as_fatal (_("Error in statement syntax")); |
| 996 | reg1 = 0; |
| 997 | } |
| 998 | if (strcmp (op_end, "")) |
| 999 | op_end = parse_reg (op_end + 1, ®2); /* Get r1. */ |
| 1000 | else |
| 1001 | { |
| 1002 | as_fatal (_("Error in statement syntax")); |
| 1003 | reg2 = 0; |
| 1004 | } |
| 1005 | if (strcmp (op_end, "")) |
| 1006 | op_end = parse_imm (op_end + 1, & exp, MIN_IMM, MAX_IMM); |
| 1007 | else |
| 1008 | as_fatal (_("Error in statement syntax")); |
| 1009 | |
| 1010 | /* Check for spl registers. */ |
| 1011 | if (check_spl_reg (& reg1)) |
| 1012 | as_fatal (_("Cannot use special register with this instruction")); |
| 1013 | if (check_spl_reg (& reg2)) |
| 1014 | as_fatal (_("Cannot use special register with this instruction")); |
| 1015 | |
| 1016 | if (exp.X_op != O_constant) |
| 1017 | { |
| 1018 | const char *opc; |
| 1019 | relax_substateT subtype; |
| 1020 | |
| 1021 | if (streq (name, "lmi")) |
| 1022 | as_fatal (_("lmi pseudo instruction should not use a label in imm field")); |
| 1023 | else if (streq (name, "smi")) |
| 1024 | as_fatal (_("smi pseudo instruction should not use a label in imm field")); |
| 1025 | |
| 1026 | if (reg2 == REG_ROSDP) |
| 1027 | opc = str_microblaze_ro_anchor; |
| 1028 | else if (reg2 == REG_RWSDP) |
| 1029 | opc = str_microblaze_rw_anchor; |
| 1030 | else |
| 1031 | opc = NULL; |
| 1032 | if (exp.X_md != 0) |
| 1033 | subtype = get_imm_otype(exp.X_md); |
| 1034 | else |
| 1035 | subtype = opcode->inst_offset_type; |
| 1036 | |
| 1037 | output = frag_var (rs_machine_dependent, |
| 1038 | isize * 2, /* maxm of 2 words. */ |
| 1039 | isize, /* minm of 1 word. */ |
| 1040 | subtype, /* PC-relative or not. */ |
| 1041 | exp.X_add_symbol, |
| 1042 | exp.X_add_number, |
| 1043 | (char *) opc); |
| 1044 | immed = 0; |
| 1045 | } |
| 1046 | else |
| 1047 | { |
| 1048 | output = frag_more (isize); |
| 1049 | immed = exp.X_add_number; |
| 1050 | } |
| 1051 | |
| 1052 | if (streq (name, "lmi") || streq (name, "smi")) |
| 1053 | { |
| 1054 | /* Load/store 32-d consecutive registers. Used on exit/entry |
| 1055 | to subroutines to save and restore registers to stack. |
| 1056 | Generate 32-d insts. */ |
| 1057 | int count; |
| 1058 | |
| 1059 | count = 32 - reg1; |
| 1060 | if (streq (name, "lmi")) |
| 1061 | opcode = (struct op_code_struct *) hash_find (opcode_hash_control, "lwi"); |
| 1062 | else |
| 1063 | opcode = (struct op_code_struct *) hash_find (opcode_hash_control, "swi"); |
| 1064 | if (opcode == NULL) |
| 1065 | { |
| 1066 | as_bad (_("unknown opcode \"%s\""), "lwi"); |
| 1067 | return; |
| 1068 | } |
| 1069 | inst = opcode->bit_sequence; |
| 1070 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1071 | inst |= (reg2 << RA_LOW) & RA_MASK; |
| 1072 | inst |= (immed << IMM_LOW) & IMM_MASK; |
| 1073 | |
| 1074 | for (i = 0; i < count - 1; i++) |
| 1075 | { |
| 1076 | output[0] = INST_BYTE0 (inst); |
| 1077 | output[1] = INST_BYTE1 (inst); |
| 1078 | output[2] = INST_BYTE2 (inst); |
| 1079 | output[3] = INST_BYTE3 (inst); |
| 1080 | output = frag_more (isize); |
| 1081 | immed = immed + 4; |
| 1082 | reg1++; |
| 1083 | inst = opcode->bit_sequence; |
| 1084 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1085 | inst |= (reg2 << RA_LOW) & RA_MASK; |
| 1086 | inst |= (immed << IMM_LOW) & IMM_MASK; |
| 1087 | } |
| 1088 | } |
| 1089 | else |
| 1090 | { |
| 1091 | temp = immed & 0xFFFF8000; |
| 1092 | if ((temp != 0) && (temp != 0xFFFF8000)) |
| 1093 | { |
| 1094 | /* Needs an immediate inst. */ |
| 1095 | opcode1 = (struct op_code_struct *) hash_find (opcode_hash_control, "imm"); |
| 1096 | if (opcode1 == NULL) |
| 1097 | { |
| 1098 | as_bad (_("unknown opcode \"%s\""), "imm"); |
| 1099 | return; |
| 1100 | } |
| 1101 | |
| 1102 | inst1 = opcode1->bit_sequence; |
| 1103 | inst1 |= ((immed & 0xFFFF0000) >> 16) & IMM_MASK; |
| 1104 | output[0] = INST_BYTE0 (inst1); |
| 1105 | output[1] = INST_BYTE1 (inst1); |
| 1106 | output[2] = INST_BYTE2 (inst1); |
| 1107 | output[3] = INST_BYTE3 (inst1); |
| 1108 | output = frag_more (isize); |
| 1109 | } |
| 1110 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1111 | inst |= (reg2 << RA_LOW) & RA_MASK; |
| 1112 | inst |= (immed << IMM_LOW) & IMM_MASK; |
| 1113 | } |
| 1114 | break; |
| 1115 | |
| 1116 | case INST_TYPE_RD_R1_IMM5: |
| 1117 | if (strcmp (op_end, "")) |
| 1118 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 1119 | else |
| 1120 | { |
| 1121 | as_fatal (_("Error in statement syntax")); |
| 1122 | reg1 = 0; |
| 1123 | } |
| 1124 | if (strcmp (op_end, "")) |
| 1125 | op_end = parse_reg (op_end + 1, ®2); /* Get r1. */ |
| 1126 | else |
| 1127 | { |
| 1128 | as_fatal (_("Error in statement syntax")); |
| 1129 | reg2 = 0; |
| 1130 | } |
| 1131 | if (strcmp (op_end, "")) |
| 1132 | op_end = parse_imm (op_end + 1, & exp, MIN_IMM, MAX_IMM); |
| 1133 | else |
| 1134 | as_fatal (_("Error in statement syntax")); |
| 1135 | |
| 1136 | /* Check for spl registers. */ |
| 1137 | if (check_spl_reg (®1)) |
| 1138 | as_fatal (_("Cannot use special register with this instruction")); |
| 1139 | if (check_spl_reg (®2)) |
| 1140 | as_fatal (_("Cannot use special register with this instruction")); |
| 1141 | |
| 1142 | if (exp.X_op != O_constant) |
| 1143 | as_warn (_("Symbol used as immediate for shift instruction")); |
| 1144 | else |
| 1145 | { |
| 1146 | output = frag_more (isize); |
| 1147 | immed = exp.X_add_number; |
| 1148 | } |
| 1149 | |
| 1150 | if (immed != (immed % 32)) |
| 1151 | { |
| 1152 | as_warn (_("Shift value > 32. using <value %% 32>")); |
| 1153 | immed = immed % 32; |
| 1154 | } |
| 1155 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1156 | inst |= (reg2 << RA_LOW) & RA_MASK; |
| 1157 | inst |= (immed << IMM_LOW) & IMM5_MASK; |
| 1158 | break; |
| 1159 | |
| 1160 | case INST_TYPE_R1_R2: |
| 1161 | if (strcmp (op_end, "")) |
| 1162 | op_end = parse_reg (op_end + 1, ®1); /* Get r1. */ |
| 1163 | else |
| 1164 | { |
| 1165 | as_fatal (_("Error in statement syntax")); |
| 1166 | reg1 = 0; |
| 1167 | } |
| 1168 | if (strcmp (op_end, "")) |
| 1169 | op_end = parse_reg (op_end + 1, ®2); /* Get r2. */ |
| 1170 | else |
| 1171 | { |
| 1172 | as_fatal (_("Error in statement syntax")); |
| 1173 | reg2 = 0; |
| 1174 | } |
| 1175 | |
| 1176 | /* Check for spl registers. */ |
| 1177 | if (check_spl_reg (& reg1)) |
| 1178 | as_fatal (_("Cannot use special register with this instruction")); |
| 1179 | if (check_spl_reg (& reg2)) |
| 1180 | as_fatal (_("Cannot use special register with this instruction")); |
| 1181 | |
| 1182 | inst |= (reg1 << RA_LOW) & RA_MASK; |
| 1183 | inst |= (reg2 << RB_LOW) & RB_MASK; |
| 1184 | output = frag_more (isize); |
| 1185 | break; |
| 1186 | |
| 1187 | case INST_TYPE_RD_R1: |
| 1188 | if (strcmp (op_end, "")) |
| 1189 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 1190 | else |
| 1191 | { |
| 1192 | as_fatal (_("Error in statement syntax")); |
| 1193 | reg1 = 0; |
| 1194 | } |
| 1195 | if (strcmp (op_end, "")) |
| 1196 | op_end = parse_reg (op_end + 1, ®2); /* Get r1. */ |
| 1197 | else |
| 1198 | { |
| 1199 | as_fatal (_("Error in statement syntax")); |
| 1200 | reg2 =0; |
| 1201 | } |
| 1202 | |
| 1203 | /* Check for spl registers. */ |
| 1204 | if (check_spl_reg (®1)) |
| 1205 | as_fatal (_("Cannot use special register with this instruction")); |
| 1206 | if (check_spl_reg (®2)) |
| 1207 | as_fatal (_("Cannot use special register with this instruction")); |
| 1208 | |
| 1209 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1210 | inst |= (reg2 << RA_LOW) & RA_MASK; |
| 1211 | output = frag_more (isize); |
| 1212 | break; |
| 1213 | |
| 1214 | case INST_TYPE_RD_RFSL: |
| 1215 | if (strcmp (op_end, "")) |
| 1216 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 1217 | else |
| 1218 | { |
| 1219 | as_fatal (_("Error in statement syntax")); |
| 1220 | reg1 = 0; |
| 1221 | } |
| 1222 | if (strcmp (op_end, "")) |
| 1223 | op_end = parse_reg (op_end + 1, &immed); /* Get rfslN. */ |
| 1224 | else |
| 1225 | { |
| 1226 | as_fatal (_("Error in statement syntax")); |
| 1227 | immed = 0; |
| 1228 | } |
| 1229 | |
| 1230 | /* Check for spl registers. */ |
| 1231 | if (check_spl_reg (®1)) |
| 1232 | as_fatal (_("Cannot use special register with this instruction")); |
| 1233 | |
| 1234 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1235 | inst |= (immed << IMM_LOW) & RFSL_MASK; |
| 1236 | output = frag_more (isize); |
| 1237 | break; |
| 1238 | |
| 1239 | case INST_TYPE_RD_IMM15: |
| 1240 | if (strcmp (op_end, "")) |
| 1241 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 1242 | else |
| 1243 | { |
| 1244 | as_fatal (_("Error in statement syntax")); |
| 1245 | reg1 = 0; |
| 1246 | } |
| 1247 | |
| 1248 | if (strcmp (op_end, "")) |
| 1249 | op_end = parse_imm (op_end + 1, & exp, MIN_IMM15, MAX_IMM15); |
| 1250 | else |
| 1251 | as_fatal (_("Error in statement syntax")); |
| 1252 | |
| 1253 | /* Check for spl registers. */ |
| 1254 | if (check_spl_reg (®1)) |
| 1255 | as_fatal (_("Cannot use special register with this instruction")); |
| 1256 | |
| 1257 | if (exp.X_op != O_constant) |
| 1258 | as_fatal (_("Symbol used as immediate value for msrset/msrclr instructions")); |
| 1259 | else |
| 1260 | { |
| 1261 | output = frag_more (isize); |
| 1262 | immed = exp.X_add_number; |
| 1263 | } |
| 1264 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1265 | inst |= (immed << IMM_LOW) & IMM15_MASK; |
| 1266 | break; |
| 1267 | |
| 1268 | case INST_TYPE_R1_RFSL: |
| 1269 | if (strcmp (op_end, "")) |
| 1270 | op_end = parse_reg (op_end + 1, ®1); /* Get r1. */ |
| 1271 | else |
| 1272 | { |
| 1273 | as_fatal (_("Error in statement syntax")); |
| 1274 | reg1 = 0; |
| 1275 | } |
| 1276 | if (strcmp (op_end, "")) |
| 1277 | op_end = parse_reg (op_end + 1, &immed); /* Get rfslN. */ |
| 1278 | else |
| 1279 | { |
| 1280 | as_fatal (_("Error in statement syntax")); |
| 1281 | immed = 0; |
| 1282 | } |
| 1283 | |
| 1284 | /* Check for spl registers. */ |
| 1285 | if (check_spl_reg (®1)) |
| 1286 | as_fatal (_("Cannot use special register with this instruction")); |
| 1287 | |
| 1288 | inst |= (reg1 << RA_LOW) & RA_MASK; |
| 1289 | inst |= (immed << IMM_LOW) & RFSL_MASK; |
| 1290 | output = frag_more (isize); |
| 1291 | break; |
| 1292 | |
| 1293 | case INST_TYPE_RFSL: |
| 1294 | if (strcmp (op_end, "")) |
| 1295 | op_end = parse_reg (op_end + 1, &immed); /* Get rfslN. */ |
| 1296 | else |
| 1297 | { |
| 1298 | as_fatal (_("Error in statement syntax")); |
| 1299 | immed = 0; |
| 1300 | } |
| 1301 | inst |= (immed << IMM_LOW) & RFSL_MASK; |
| 1302 | output = frag_more (isize); |
| 1303 | break; |
| 1304 | |
| 1305 | case INST_TYPE_R1: |
| 1306 | if (strcmp (op_end, "")) |
| 1307 | op_end = parse_reg (op_end + 1, ®1); /* Get r1. */ |
| 1308 | else |
| 1309 | { |
| 1310 | as_fatal (_("Error in statement syntax")); |
| 1311 | reg1 = 0; |
| 1312 | } |
| 1313 | |
| 1314 | /* Check for spl registers. */ |
| 1315 | if (check_spl_reg (®1)) |
| 1316 | as_fatal (_("Cannot use special register with this instruction")); |
| 1317 | |
| 1318 | inst |= (reg1 << RA_LOW) & RA_MASK; |
| 1319 | output = frag_more (isize); |
| 1320 | break; |
| 1321 | |
| 1322 | /* For tuqula insn...:) */ |
| 1323 | case INST_TYPE_RD: |
| 1324 | if (strcmp (op_end, "")) |
| 1325 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 1326 | else |
| 1327 | { |
| 1328 | as_fatal (_("Error in statement syntax")); |
| 1329 | reg1 = 0; |
| 1330 | } |
| 1331 | |
| 1332 | /* Check for spl registers. */ |
| 1333 | if (check_spl_reg (®1)) |
| 1334 | as_fatal (_("Cannot use special register with this instruction")); |
| 1335 | |
| 1336 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1337 | output = frag_more (isize); |
| 1338 | break; |
| 1339 | |
| 1340 | case INST_TYPE_RD_SPECIAL: |
| 1341 | if (strcmp (op_end, "")) |
| 1342 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 1343 | else |
| 1344 | { |
| 1345 | as_fatal (_("Error in statement syntax")); |
| 1346 | reg1 = 0; |
| 1347 | } |
| 1348 | if (strcmp (op_end, "")) |
| 1349 | op_end = parse_reg (op_end + 1, ®2); /* Get r1. */ |
| 1350 | else |
| 1351 | { |
| 1352 | as_fatal (_("Error in statement syntax")); |
| 1353 | reg2 = 0; |
| 1354 | } |
| 1355 | |
| 1356 | if (reg2 == REG_MSR) |
| 1357 | immed = opcode->immval_mask | REG_MSR_MASK; |
| 1358 | else if (reg2 == REG_PC) |
| 1359 | immed = opcode->immval_mask | REG_PC_MASK; |
| 1360 | else if (reg2 == REG_EAR) |
| 1361 | immed = opcode->immval_mask | REG_EAR_MASK; |
| 1362 | else if (reg2 == REG_ESR) |
| 1363 | immed = opcode->immval_mask | REG_ESR_MASK; |
| 1364 | else if (reg2 == REG_FSR) |
| 1365 | immed = opcode->immval_mask | REG_FSR_MASK; |
| 1366 | else if (reg2 == REG_BTR) |
| 1367 | immed = opcode->immval_mask | REG_BTR_MASK; |
| 1368 | else if (reg2 == REG_EDR) |
| 1369 | immed = opcode->immval_mask | REG_EDR_MASK; |
| 1370 | else if (reg2 == REG_PID) |
| 1371 | immed = opcode->immval_mask | REG_PID_MASK; |
| 1372 | else if (reg2 == REG_ZPR) |
| 1373 | immed = opcode->immval_mask | REG_ZPR_MASK; |
| 1374 | else if (reg2 == REG_TLBX) |
| 1375 | immed = opcode->immval_mask | REG_TLBX_MASK; |
| 1376 | else if (reg2 == REG_TLBLO) |
| 1377 | immed = opcode->immval_mask | REG_TLBLO_MASK; |
| 1378 | else if (reg2 == REG_TLBHI) |
| 1379 | immed = opcode->immval_mask | REG_TLBHI_MASK; |
| 1380 | else if (reg2 == REG_SHR) |
| 1381 | immed = opcode->immval_mask | REG_SHR_MASK; |
| 1382 | else if (reg2 == REG_SLR) |
| 1383 | immed = opcode->immval_mask | REG_SLR_MASK; |
| 1384 | else if (reg2 >= (REG_PVR+MIN_PVR_REGNUM) && reg2 <= (REG_PVR+MAX_PVR_REGNUM)) |
| 1385 | immed = opcode->immval_mask | REG_PVR_MASK | reg2; |
| 1386 | else |
| 1387 | as_fatal (_("invalid value for special purpose register")); |
| 1388 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1389 | inst |= (immed << IMM_LOW) & IMM_MASK; |
| 1390 | output = frag_more (isize); |
| 1391 | break; |
| 1392 | |
| 1393 | case INST_TYPE_SPECIAL_R1: |
| 1394 | if (strcmp (op_end, "")) |
| 1395 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 1396 | else |
| 1397 | { |
| 1398 | as_fatal (_("Error in statement syntax")); |
| 1399 | reg1 = 0; |
| 1400 | } |
| 1401 | if (strcmp (op_end, "")) |
| 1402 | op_end = parse_reg (op_end + 1, ®2); /* Get r1. */ |
| 1403 | else |
| 1404 | { |
| 1405 | as_fatal (_("Error in statement syntax")); |
| 1406 | reg2 = 0; |
| 1407 | } |
| 1408 | |
| 1409 | if (reg1 == REG_MSR) |
| 1410 | immed = opcode->immval_mask | REG_MSR_MASK; |
| 1411 | else if (reg1 == REG_PC) |
| 1412 | immed = opcode->immval_mask | REG_PC_MASK; |
| 1413 | else if (reg1 == REG_EAR) |
| 1414 | immed = opcode->immval_mask | REG_EAR_MASK; |
| 1415 | else if (reg1 == REG_ESR) |
| 1416 | immed = opcode->immval_mask | REG_ESR_MASK; |
| 1417 | else if (reg1 == REG_FSR) |
| 1418 | immed = opcode->immval_mask | REG_FSR_MASK; |
| 1419 | else if (reg1 == REG_BTR) |
| 1420 | immed = opcode->immval_mask | REG_BTR_MASK; |
| 1421 | else if (reg1 == REG_EDR) |
| 1422 | immed = opcode->immval_mask | REG_EDR_MASK; |
| 1423 | else if (reg1 == REG_PID) |
| 1424 | immed = opcode->immval_mask | REG_PID_MASK; |
| 1425 | else if (reg1 == REG_ZPR) |
| 1426 | immed = opcode->immval_mask | REG_ZPR_MASK; |
| 1427 | else if (reg1 == REG_TLBX) |
| 1428 | immed = opcode->immval_mask | REG_TLBX_MASK; |
| 1429 | else if (reg1 == REG_TLBLO) |
| 1430 | immed = opcode->immval_mask | REG_TLBLO_MASK; |
| 1431 | else if (reg1 == REG_TLBHI) |
| 1432 | immed = opcode->immval_mask | REG_TLBHI_MASK; |
| 1433 | else if (reg1 == REG_TLBSX) |
| 1434 | immed = opcode->immval_mask | REG_TLBSX_MASK; |
| 1435 | else if (reg1 == REG_SHR) |
| 1436 | immed = opcode->immval_mask | REG_SHR_MASK; |
| 1437 | else if (reg1 == REG_SLR) |
| 1438 | immed = opcode->immval_mask | REG_SLR_MASK; |
| 1439 | else |
| 1440 | as_fatal (_("invalid value for special purpose register")); |
| 1441 | inst |= (reg2 << RA_LOW) & RA_MASK; |
| 1442 | inst |= (immed << IMM_LOW) & IMM_MASK; |
| 1443 | output = frag_more (isize); |
| 1444 | break; |
| 1445 | |
| 1446 | case INST_TYPE_R1_R2_SPECIAL: |
| 1447 | if (strcmp (op_end, "")) |
| 1448 | op_end = parse_reg (op_end + 1, ®1); /* Get r1. */ |
| 1449 | else |
| 1450 | { |
| 1451 | as_fatal (_("Error in statement syntax")); |
| 1452 | reg1 = 0; |
| 1453 | } |
| 1454 | if (strcmp (op_end, "")) |
| 1455 | op_end = parse_reg (op_end + 1, ®2); /* Get r2. */ |
| 1456 | else |
| 1457 | { |
| 1458 | as_fatal (_("Error in statement syntax")); |
| 1459 | reg2 =0; |
| 1460 | } |
| 1461 | |
| 1462 | /* Check for spl registers. */ |
| 1463 | if (check_spl_reg (®1)) |
| 1464 | as_fatal (_("Cannot use special register with this instruction")); |
| 1465 | if (check_spl_reg (®2)) |
| 1466 | as_fatal (_("Cannot use special register with this instruction")); |
| 1467 | |
| 1468 | /* insn wic ra, rb => wic ra, ra, rb. */ |
| 1469 | inst |= (reg1 << RA_LOW) & RA_MASK; |
| 1470 | inst |= (reg2 << RB_LOW) & RB_MASK; |
| 1471 | |
| 1472 | output = frag_more (isize); |
| 1473 | break; |
| 1474 | |
| 1475 | case INST_TYPE_RD_R2: |
| 1476 | if (strcmp (op_end, "")) |
| 1477 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 1478 | else |
| 1479 | { |
| 1480 | as_fatal (_("Error in statement syntax")); |
| 1481 | reg1 = 0; |
| 1482 | } |
| 1483 | if (strcmp (op_end, "")) |
| 1484 | op_end = parse_reg (op_end + 1, ®2); /* Get r2. */ |
| 1485 | else |
| 1486 | { |
| 1487 | as_fatal (_("Error in statement syntax")); |
| 1488 | reg2 = 0; |
| 1489 | } |
| 1490 | |
| 1491 | /* Check for spl registers. */ |
| 1492 | if (check_spl_reg (®1)) |
| 1493 | as_fatal (_("Cannot use special register with this instruction")); |
| 1494 | if (check_spl_reg (®2)) |
| 1495 | as_fatal (_("Cannot use special register with this instruction")); |
| 1496 | |
| 1497 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1498 | inst |= (reg2 << RB_LOW) & RB_MASK; |
| 1499 | output = frag_more (isize); |
| 1500 | break; |
| 1501 | |
| 1502 | case INST_TYPE_R1_IMM: |
| 1503 | if (strcmp (op_end, "")) |
| 1504 | op_end = parse_reg (op_end + 1, ®1); /* Get r1. */ |
| 1505 | else |
| 1506 | { |
| 1507 | as_fatal (_("Error in statement syntax")); |
| 1508 | reg1 = 0; |
| 1509 | } |
| 1510 | if (strcmp (op_end, "")) |
| 1511 | op_end = parse_imm (op_end + 1, & exp, MIN_IMM, MAX_IMM); |
| 1512 | else |
| 1513 | as_fatal (_("Error in statement syntax")); |
| 1514 | |
| 1515 | /* Check for spl registers. */ |
| 1516 | if (check_spl_reg (®1)) |
| 1517 | as_fatal (_("Cannot use special register with this instruction")); |
| 1518 | |
| 1519 | if (exp.X_op != O_constant) |
| 1520 | { |
| 1521 | char *opc = NULL; |
| 1522 | relax_substateT subtype; |
| 1523 | |
| 1524 | if (exp.X_md != 0) |
| 1525 | subtype = get_imm_otype(exp.X_md); |
| 1526 | else |
| 1527 | subtype = opcode->inst_offset_type; |
| 1528 | |
| 1529 | output = frag_var (rs_machine_dependent, |
| 1530 | isize * 2, /* maxm of 2 words. */ |
| 1531 | isize, /* minm of 1 word. */ |
| 1532 | subtype, /* PC-relative or not. */ |
| 1533 | exp.X_add_symbol, |
| 1534 | exp.X_add_number, |
| 1535 | opc); |
| 1536 | immed = 0; |
| 1537 | } |
| 1538 | else |
| 1539 | { |
| 1540 | output = frag_more (isize); |
| 1541 | immed = exp.X_add_number; |
| 1542 | } |
| 1543 | |
| 1544 | temp = immed & 0xFFFF8000; |
| 1545 | if ((temp != 0) && (temp != 0xFFFF8000)) |
| 1546 | { |
| 1547 | /* Needs an immediate inst. */ |
| 1548 | opcode1 = (struct op_code_struct *) hash_find (opcode_hash_control, "imm"); |
| 1549 | if (opcode1 == NULL) |
| 1550 | { |
| 1551 | as_bad (_("unknown opcode \"%s\""), "imm"); |
| 1552 | return; |
| 1553 | } |
| 1554 | |
| 1555 | inst1 = opcode1->bit_sequence; |
| 1556 | inst1 |= ((immed & 0xFFFF0000) >> 16) & IMM_MASK; |
| 1557 | output[0] = INST_BYTE0 (inst1); |
| 1558 | output[1] = INST_BYTE1 (inst1); |
| 1559 | output[2] = INST_BYTE2 (inst1); |
| 1560 | output[3] = INST_BYTE3 (inst1); |
| 1561 | output = frag_more (isize); |
| 1562 | } |
| 1563 | |
| 1564 | inst |= (reg1 << RA_LOW) & RA_MASK; |
| 1565 | inst |= (immed << IMM_LOW) & IMM_MASK; |
| 1566 | break; |
| 1567 | |
| 1568 | case INST_TYPE_RD_IMM: |
| 1569 | if (strcmp (op_end, "")) |
| 1570 | op_end = parse_reg (op_end + 1, ®1); /* Get rd. */ |
| 1571 | else |
| 1572 | { |
| 1573 | as_fatal (_("Error in statement syntax")); |
| 1574 | reg1 = 0; |
| 1575 | } |
| 1576 | if (strcmp (op_end, "")) |
| 1577 | op_end = parse_imm (op_end + 1, & exp, MIN_IMM, MAX_IMM); |
| 1578 | else |
| 1579 | as_fatal (_("Error in statement syntax")); |
| 1580 | |
| 1581 | /* Check for spl registers. */ |
| 1582 | if (check_spl_reg (®1)) |
| 1583 | as_fatal (_("Cannot use special register with this instruction")); |
| 1584 | |
| 1585 | if (exp.X_op != O_constant) |
| 1586 | { |
| 1587 | char *opc = NULL; |
| 1588 | relax_substateT subtype; |
| 1589 | |
| 1590 | if (exp.X_md != 0) |
| 1591 | subtype = get_imm_otype(exp.X_md); |
| 1592 | else |
| 1593 | subtype = opcode->inst_offset_type; |
| 1594 | |
| 1595 | output = frag_var (rs_machine_dependent, |
| 1596 | isize * 2, /* maxm of 2 words. */ |
| 1597 | isize, /* minm of 1 word. */ |
| 1598 | subtype, /* PC-relative or not. */ |
| 1599 | exp.X_add_symbol, |
| 1600 | exp.X_add_number, |
| 1601 | opc); |
| 1602 | immed = 0; |
| 1603 | } |
| 1604 | else |
| 1605 | { |
| 1606 | output = frag_more (isize); |
| 1607 | immed = exp.X_add_number; |
| 1608 | } |
| 1609 | |
| 1610 | temp = immed & 0xFFFF8000; |
| 1611 | if ((temp != 0) && (temp != 0xFFFF8000)) |
| 1612 | { |
| 1613 | /* Needs an immediate inst. */ |
| 1614 | opcode1 = (struct op_code_struct *) hash_find (opcode_hash_control, "imm"); |
| 1615 | if (opcode1 == NULL) |
| 1616 | { |
| 1617 | as_bad (_("unknown opcode \"%s\""), "imm"); |
| 1618 | return; |
| 1619 | } |
| 1620 | |
| 1621 | inst1 = opcode1->bit_sequence; |
| 1622 | inst1 |= ((immed & 0xFFFF0000) >> 16) & IMM_MASK; |
| 1623 | output[0] = INST_BYTE0 (inst1); |
| 1624 | output[1] = INST_BYTE1 (inst1); |
| 1625 | output[2] = INST_BYTE2 (inst1); |
| 1626 | output[3] = INST_BYTE3 (inst1); |
| 1627 | output = frag_more (isize); |
| 1628 | } |
| 1629 | |
| 1630 | inst |= (reg1 << RD_LOW) & RD_MASK; |
| 1631 | inst |= (immed << IMM_LOW) & IMM_MASK; |
| 1632 | break; |
| 1633 | |
| 1634 | case INST_TYPE_R2: |
| 1635 | if (strcmp (op_end, "")) |
| 1636 | op_end = parse_reg (op_end + 1, ®2); /* Get r2. */ |
| 1637 | else |
| 1638 | { |
| 1639 | as_fatal (_("Error in statement syntax")); |
| 1640 | reg2 = 0; |
| 1641 | } |
| 1642 | |
| 1643 | /* Check for spl registers. */ |
| 1644 | if (check_spl_reg (®2)) |
| 1645 | as_fatal (_("Cannot use special register with this instruction")); |
| 1646 | |
| 1647 | inst |= (reg2 << RB_LOW) & RB_MASK; |
| 1648 | output = frag_more (isize); |
| 1649 | break; |
| 1650 | |
| 1651 | case INST_TYPE_IMM: |
| 1652 | if (streq (name, "imm")) |
| 1653 | as_fatal (_("An IMM instruction should not be present in the .s file")); |
| 1654 | |
| 1655 | op_end = parse_imm (op_end + 1, & exp, MIN_IMM, MAX_IMM); |
| 1656 | |
| 1657 | if (exp.X_op != O_constant) |
| 1658 | { |
| 1659 | char *opc = NULL; |
| 1660 | relax_substateT subtype; |
| 1661 | |
| 1662 | if (exp.X_md != 0) |
| 1663 | subtype = get_imm_otype(exp.X_md); |
| 1664 | else |
| 1665 | subtype = opcode->inst_offset_type; |
| 1666 | |
| 1667 | output = frag_var (rs_machine_dependent, |
| 1668 | isize * 2, /* maxm of 2 words. */ |
| 1669 | isize, /* minm of 1 word. */ |
| 1670 | subtype, /* PC-relative or not. */ |
| 1671 | exp.X_add_symbol, |
| 1672 | exp.X_add_number, |
| 1673 | opc); |
| 1674 | immed = 0; |
| 1675 | } |
| 1676 | else |
| 1677 | { |
| 1678 | output = frag_more (isize); |
| 1679 | immed = exp.X_add_number; |
| 1680 | } |
| 1681 | |
| 1682 | |
| 1683 | temp = immed & 0xFFFF8000; |
| 1684 | if ((temp != 0) && (temp != 0xFFFF8000)) |
| 1685 | { |
| 1686 | /* Needs an immediate inst. */ |
| 1687 | opcode1 = (struct op_code_struct *) hash_find (opcode_hash_control, "imm"); |
| 1688 | if (opcode1 == NULL) |
| 1689 | { |
| 1690 | as_bad (_("unknown opcode \"%s\""), "imm"); |
| 1691 | return; |
| 1692 | } |
| 1693 | |
| 1694 | inst1 = opcode1->bit_sequence; |
| 1695 | inst1 |= ((immed & 0xFFFF0000) >> 16) & IMM_MASK; |
| 1696 | output[0] = INST_BYTE0 (inst1); |
| 1697 | output[1] = INST_BYTE1 (inst1); |
| 1698 | output[2] = INST_BYTE2 (inst1); |
| 1699 | output[3] = INST_BYTE3 (inst1); |
| 1700 | output = frag_more (isize); |
| 1701 | } |
| 1702 | inst |= (immed << IMM_LOW) & IMM_MASK; |
| 1703 | break; |
| 1704 | |
| 1705 | case INST_TYPE_NONE: |
| 1706 | output = frag_more (isize); |
| 1707 | break; |
| 1708 | |
| 1709 | case INST_TYPE_IMM5: |
| 1710 | if (strcmp(op_end, "")) |
| 1711 | op_end = parse_imm (op_end + 1, & exp, MIN_IMM5, MAX_IMM5); |
| 1712 | else |
| 1713 | as_fatal(_("Error in statement syntax")); |
| 1714 | if (exp.X_op != O_constant) { |
| 1715 | as_warn(_("Symbol used as immediate for mbar instruction")); |
| 1716 | } else { |
| 1717 | output = frag_more (isize); |
| 1718 | immed = exp.X_add_number; |
| 1719 | } |
| 1720 | if (immed != (immed % 32)) { |
| 1721 | as_warn(_("Immediate value for mbar > 32. using <value %% 32>")); |
| 1722 | immed = immed % 32; |
| 1723 | } |
| 1724 | inst |= (immed << IMM_MBAR); |
| 1725 | break; |
| 1726 | |
| 1727 | default: |
| 1728 | as_fatal (_("unimplemented opcode \"%s\""), name); |
| 1729 | } |
| 1730 | |
| 1731 | /* Drop whitespace after all the operands have been parsed. */ |
| 1732 | while (ISSPACE (* op_end)) |
| 1733 | op_end ++; |
| 1734 | |
| 1735 | /* Give warning message if the insn has more operands than required. */ |
| 1736 | if (strcmp (op_end, opcode->name) && strcmp (op_end, "")) |
| 1737 | as_warn (_("ignoring operands: %s "), op_end); |
| 1738 | |
| 1739 | output[0] = INST_BYTE0 (inst); |
| 1740 | output[1] = INST_BYTE1 (inst); |
| 1741 | output[2] = INST_BYTE2 (inst); |
| 1742 | output[3] = INST_BYTE3 (inst); |
| 1743 | |
| 1744 | #ifdef OBJ_ELF |
| 1745 | dwarf2_emit_insn (4); |
| 1746 | #endif |
| 1747 | } |
| 1748 | |
| 1749 | symbolS * |
| 1750 | md_undefined_symbol (char * name ATTRIBUTE_UNUSED) |
| 1751 | { |
| 1752 | return NULL; |
| 1753 | } |
| 1754 | |
| 1755 | /* Various routines to kill one day. */ |
| 1756 | /* Equal to MAX_PRECISION in atof-ieee.c */ |
| 1757 | #define MAX_LITTLENUMS 6 |
| 1758 | |
| 1759 | /* Turn a string in input_line_pointer into a floating point constant of type |
| 1760 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS |
| 1761 | emitted is stored in *sizeP. An error message is returned, or NULL on OK.*/ |
| 1762 | const char * |
| 1763 | md_atof (int type, char * litP, int * sizeP) |
| 1764 | { |
| 1765 | int prec; |
| 1766 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; |
| 1767 | int i; |
| 1768 | char * t; |
| 1769 | |
| 1770 | switch (type) |
| 1771 | { |
| 1772 | case 'f': |
| 1773 | case 'F': |
| 1774 | case 's': |
| 1775 | case 'S': |
| 1776 | prec = 2; |
| 1777 | break; |
| 1778 | |
| 1779 | case 'd': |
| 1780 | case 'D': |
| 1781 | case 'r': |
| 1782 | case 'R': |
| 1783 | prec = 4; |
| 1784 | break; |
| 1785 | |
| 1786 | case 'x': |
| 1787 | case 'X': |
| 1788 | prec = 6; |
| 1789 | break; |
| 1790 | |
| 1791 | case 'p': |
| 1792 | case 'P': |
| 1793 | prec = 6; |
| 1794 | break; |
| 1795 | |
| 1796 | default: |
| 1797 | *sizeP = 0; |
| 1798 | return _("Bad call to MD_NTOF()"); |
| 1799 | } |
| 1800 | |
| 1801 | t = atof_ieee (input_line_pointer, type, words); |
| 1802 | |
| 1803 | if (t) |
| 1804 | input_line_pointer = t; |
| 1805 | |
| 1806 | *sizeP = prec * sizeof (LITTLENUM_TYPE); |
| 1807 | |
| 1808 | if (! target_big_endian) |
| 1809 | { |
| 1810 | for (i = prec - 1; i >= 0; i--) |
| 1811 | { |
| 1812 | md_number_to_chars (litP, (valueT) words[i], |
| 1813 | sizeof (LITTLENUM_TYPE)); |
| 1814 | litP += sizeof (LITTLENUM_TYPE); |
| 1815 | } |
| 1816 | } |
| 1817 | else |
| 1818 | for (i = 0; i < prec; i++) |
| 1819 | { |
| 1820 | md_number_to_chars (litP, (valueT) words[i], |
| 1821 | sizeof (LITTLENUM_TYPE)); |
| 1822 | litP += sizeof (LITTLENUM_TYPE); |
| 1823 | } |
| 1824 | |
| 1825 | return NULL; |
| 1826 | } |
| 1827 | \f |
| 1828 | const char * md_shortopts = ""; |
| 1829 | |
| 1830 | struct option md_longopts[] = |
| 1831 | { |
| 1832 | {"EB", no_argument, NULL, OPTION_EB}, |
| 1833 | {"EL", no_argument, NULL, OPTION_EL}, |
| 1834 | { NULL, no_argument, NULL, 0} |
| 1835 | }; |
| 1836 | |
| 1837 | size_t md_longopts_size = sizeof (md_longopts); |
| 1838 | |
| 1839 | int md_short_jump_size; |
| 1840 | |
| 1841 | void |
| 1842 | md_create_short_jump (char * ptr ATTRIBUTE_UNUSED, |
| 1843 | addressT from_Nddr ATTRIBUTE_UNUSED, |
| 1844 | addressT to_Nddr ATTRIBUTE_UNUSED, |
| 1845 | fragS * frag ATTRIBUTE_UNUSED, |
| 1846 | symbolS * to_symbol ATTRIBUTE_UNUSED) |
| 1847 | { |
| 1848 | as_fatal (_("failed sanity check: short_jump")); |
| 1849 | } |
| 1850 | |
| 1851 | void |
| 1852 | md_create_long_jump (char * ptr ATTRIBUTE_UNUSED, |
| 1853 | addressT from_Nddr ATTRIBUTE_UNUSED, |
| 1854 | addressT to_Nddr ATTRIBUTE_UNUSED, |
| 1855 | fragS * frag ATTRIBUTE_UNUSED, |
| 1856 | symbolS * to_symbol ATTRIBUTE_UNUSED) |
| 1857 | { |
| 1858 | as_fatal (_("failed sanity check: long_jump")); |
| 1859 | } |
| 1860 | |
| 1861 | /* Called after relaxing, change the frags so they know how big they are. */ |
| 1862 | |
| 1863 | void |
| 1864 | md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED, |
| 1865 | segT sec ATTRIBUTE_UNUSED, |
| 1866 | fragS * fragP) |
| 1867 | { |
| 1868 | fixS *fixP; |
| 1869 | |
| 1870 | switch (fragP->fr_subtype) |
| 1871 | { |
| 1872 | case UNDEFINED_PC_OFFSET: |
| 1873 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1874 | fragP->fr_offset, TRUE, BFD_RELOC_64_PCREL); |
| 1875 | fragP->fr_fix += INST_WORD_SIZE * 2; |
| 1876 | fragP->fr_var = 0; |
| 1877 | break; |
| 1878 | case DEFINED_ABS_SEGMENT: |
| 1879 | if (fragP->fr_symbol == GOT_symbol) |
| 1880 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1881 | fragP->fr_offset, TRUE, BFD_RELOC_MICROBLAZE_64_GOTPC); |
| 1882 | else |
| 1883 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1884 | fragP->fr_offset, FALSE, BFD_RELOC_64); |
| 1885 | fragP->fr_fix += INST_WORD_SIZE * 2; |
| 1886 | fragP->fr_var = 0; |
| 1887 | break; |
| 1888 | case DEFINED_RO_SEGMENT: |
| 1889 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE, fragP->fr_symbol, |
| 1890 | fragP->fr_offset, FALSE, BFD_RELOC_MICROBLAZE_32_ROSDA); |
| 1891 | fragP->fr_fix += INST_WORD_SIZE; |
| 1892 | fragP->fr_var = 0; |
| 1893 | break; |
| 1894 | case DEFINED_RW_SEGMENT: |
| 1895 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE, fragP->fr_symbol, |
| 1896 | fragP->fr_offset, FALSE, BFD_RELOC_MICROBLAZE_32_RWSDA); |
| 1897 | fragP->fr_fix += INST_WORD_SIZE; |
| 1898 | fragP->fr_var = 0; |
| 1899 | break; |
| 1900 | case DEFINED_PC_OFFSET: |
| 1901 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE, fragP->fr_symbol, |
| 1902 | fragP->fr_offset, TRUE, BFD_RELOC_MICROBLAZE_32_LO_PCREL); |
| 1903 | fragP->fr_fix += INST_WORD_SIZE; |
| 1904 | fragP->fr_var = 0; |
| 1905 | break; |
| 1906 | case LARGE_DEFINED_PC_OFFSET: |
| 1907 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1908 | fragP->fr_offset, TRUE, BFD_RELOC_64_PCREL); |
| 1909 | fragP->fr_fix += INST_WORD_SIZE * 2; |
| 1910 | fragP->fr_var = 0; |
| 1911 | break; |
| 1912 | case GOT_OFFSET: |
| 1913 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1914 | fragP->fr_offset, FALSE, BFD_RELOC_MICROBLAZE_64_GOT); |
| 1915 | fragP->fr_fix += INST_WORD_SIZE * 2; |
| 1916 | fragP->fr_var = 0; |
| 1917 | break; |
| 1918 | case PLT_OFFSET: |
| 1919 | fixP = fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1920 | fragP->fr_offset, TRUE, BFD_RELOC_MICROBLAZE_64_PLT); |
| 1921 | /* fixP->fx_plt = 1; */ |
| 1922 | (void) fixP; |
| 1923 | fragP->fr_fix += INST_WORD_SIZE * 2; |
| 1924 | fragP->fr_var = 0; |
| 1925 | break; |
| 1926 | case GOTOFF_OFFSET: |
| 1927 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1928 | fragP->fr_offset, FALSE, BFD_RELOC_MICROBLAZE_64_GOTOFF); |
| 1929 | fragP->fr_fix += INST_WORD_SIZE * 2; |
| 1930 | fragP->fr_var = 0; |
| 1931 | break; |
| 1932 | case TLSGD_OFFSET: |
| 1933 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1934 | fragP->fr_offset, FALSE, BFD_RELOC_MICROBLAZE_64_TLSGD); |
| 1935 | fragP->fr_fix += INST_WORD_SIZE * 2; |
| 1936 | fragP->fr_var = 0; |
| 1937 | break; |
| 1938 | case TLSLD_OFFSET: |
| 1939 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1940 | fragP->fr_offset, FALSE, BFD_RELOC_MICROBLAZE_64_TLSLD); |
| 1941 | fragP->fr_fix += INST_WORD_SIZE * 2; |
| 1942 | fragP->fr_var = 0; |
| 1943 | break; |
| 1944 | case TLSDTPREL_OFFSET: |
| 1945 | fix_new (fragP, fragP->fr_fix, INST_WORD_SIZE * 2, fragP->fr_symbol, |
| 1946 | fragP->fr_offset, FALSE, BFD_RELOC_MICROBLAZE_64_TLSDTPREL); |
| 1947 | fragP->fr_fix += INST_WORD_SIZE * 2; |
| 1948 | fragP->fr_var = 0; |
| 1949 | break; |
| 1950 | |
| 1951 | default: |
| 1952 | abort (); |
| 1953 | } |
| 1954 | } |
| 1955 | |
| 1956 | /* Applies the desired value to the specified location. |
| 1957 | Also sets up addends for 'rela' type relocations. */ |
| 1958 | void |
| 1959 | md_apply_fix (fixS * fixP, |
| 1960 | valueT * valp, |
| 1961 | segT segment) |
| 1962 | { |
| 1963 | char * buf = fixP->fx_where + fixP->fx_frag->fr_literal; |
| 1964 | const char * file = fixP->fx_file ? fixP->fx_file : _("unknown"); |
| 1965 | const char * symname; |
| 1966 | /* Note: use offsetT because it is signed, valueT is unsigned. */ |
| 1967 | offsetT val = (offsetT) * valp; |
| 1968 | int i; |
| 1969 | struct op_code_struct * opcode1; |
| 1970 | unsigned long inst1; |
| 1971 | |
| 1972 | symname = fixP->fx_addsy ? S_GET_NAME (fixP->fx_addsy) : _("<unknown>"); |
| 1973 | |
| 1974 | /* fixP->fx_offset is supposed to be set up correctly for all |
| 1975 | symbol relocations. */ |
| 1976 | if (fixP->fx_addsy == NULL) |
| 1977 | { |
| 1978 | if (!fixP->fx_pcrel) |
| 1979 | fixP->fx_offset = val; /* Absolute relocation. */ |
| 1980 | else |
| 1981 | fprintf (stderr, "NULL symbol PC-relative relocation? offset = %08x, val = %08x\n", |
| 1982 | (unsigned int) fixP->fx_offset, (unsigned int) val); |
| 1983 | } |
| 1984 | |
| 1985 | /* If we aren't adjusting this fixup to be against the section |
| 1986 | symbol, we need to adjust the value. */ |
| 1987 | if (fixP->fx_addsy != NULL) |
| 1988 | { |
| 1989 | if (S_IS_WEAK (fixP->fx_addsy) |
| 1990 | || (symbol_used_in_reloc_p (fixP->fx_addsy) |
| 1991 | && (((bfd_get_section_flags (stdoutput, |
| 1992 | S_GET_SEGMENT (fixP->fx_addsy)) |
| 1993 | & SEC_LINK_ONCE) != 0) |
| 1994 | || !strncmp (segment_name (S_GET_SEGMENT (fixP->fx_addsy)), |
| 1995 | ".gnu.linkonce", |
| 1996 | sizeof (".gnu.linkonce") - 1)))) |
| 1997 | { |
| 1998 | val -= S_GET_VALUE (fixP->fx_addsy); |
| 1999 | if (val != 0 && ! fixP->fx_pcrel) |
| 2000 | { |
| 2001 | /* In this case, the bfd_install_relocation routine will |
| 2002 | incorrectly add the symbol value back in. We just want |
| 2003 | the addend to appear in the object file. |
| 2004 | FIXME: If this makes VALUE zero, we're toast. */ |
| 2005 | val -= S_GET_VALUE (fixP->fx_addsy); |
| 2006 | } |
| 2007 | } |
| 2008 | } |
| 2009 | |
| 2010 | /* If the fix is relative to a symbol which is not defined, or not |
| 2011 | in the same segment as the fix, we cannot resolve it here. */ |
| 2012 | /* fixP->fx_addsy is NULL if valp contains the entire relocation. */ |
| 2013 | if (fixP->fx_addsy != NULL |
| 2014 | && (!S_IS_DEFINED (fixP->fx_addsy) |
| 2015 | || (S_GET_SEGMENT (fixP->fx_addsy) != segment))) |
| 2016 | { |
| 2017 | fixP->fx_done = 0; |
| 2018 | #ifdef OBJ_ELF |
| 2019 | /* For ELF we can just return and let the reloc that will be generated |
| 2020 | take care of everything. For COFF we still have to insert 'val' |
| 2021 | into the insn since the addend field will be ignored. */ |
| 2022 | /* return; */ |
| 2023 | #endif |
| 2024 | } |
| 2025 | /* All fixups in the text section must be handled in the linker. */ |
| 2026 | else if (segment->flags & SEC_CODE) |
| 2027 | fixP->fx_done = 0; |
| 2028 | else if (!fixP->fx_pcrel && fixP->fx_addsy != NULL) |
| 2029 | fixP->fx_done = 0; |
| 2030 | else |
| 2031 | fixP->fx_done = 1; |
| 2032 | |
| 2033 | switch (fixP->fx_r_type) |
| 2034 | { |
| 2035 | case BFD_RELOC_MICROBLAZE_32_LO: |
| 2036 | case BFD_RELOC_MICROBLAZE_32_LO_PCREL: |
| 2037 | if (target_big_endian) |
| 2038 | { |
| 2039 | buf[2] |= ((val >> 8) & 0xff); |
| 2040 | buf[3] |= (val & 0xff); |
| 2041 | } |
| 2042 | else |
| 2043 | { |
| 2044 | buf[1] |= ((val >> 8) & 0xff); |
| 2045 | buf[0] |= (val & 0xff); |
| 2046 | } |
| 2047 | break; |
| 2048 | case BFD_RELOC_MICROBLAZE_32_ROSDA: |
| 2049 | case BFD_RELOC_MICROBLAZE_32_RWSDA: |
| 2050 | /* Don't do anything if the symbol is not defined. */ |
| 2051 | if (fixP->fx_addsy == NULL || S_IS_DEFINED (fixP->fx_addsy)) |
| 2052 | { |
| 2053 | if (((val & 0xFFFF8000) != 0) && ((val & 0xFFFF8000) != 0xFFFF8000)) |
| 2054 | as_bad_where (file, fixP->fx_line, |
| 2055 | _("pcrel for branch to %s too far (0x%x)"), |
| 2056 | symname, (int) val); |
| 2057 | if (target_big_endian) |
| 2058 | { |
| 2059 | buf[2] |= ((val >> 8) & 0xff); |
| 2060 | buf[3] |= (val & 0xff); |
| 2061 | } |
| 2062 | else |
| 2063 | { |
| 2064 | buf[1] |= ((val >> 8) & 0xff); |
| 2065 | buf[0] |= (val & 0xff); |
| 2066 | } |
| 2067 | } |
| 2068 | break; |
| 2069 | case BFD_RELOC_32: |
| 2070 | case BFD_RELOC_RVA: |
| 2071 | case BFD_RELOC_32_PCREL: |
| 2072 | case BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM: |
| 2073 | /* Don't do anything if the symbol is not defined. */ |
| 2074 | if (fixP->fx_addsy == NULL || S_IS_DEFINED (fixP->fx_addsy)) |
| 2075 | { |
| 2076 | if (target_big_endian) |
| 2077 | { |
| 2078 | buf[0] |= ((val >> 24) & 0xff); |
| 2079 | buf[1] |= ((val >> 16) & 0xff); |
| 2080 | buf[2] |= ((val >> 8) & 0xff); |
| 2081 | buf[3] |= (val & 0xff); |
| 2082 | } |
| 2083 | else |
| 2084 | { |
| 2085 | buf[3] |= ((val >> 24) & 0xff); |
| 2086 | buf[2] |= ((val >> 16) & 0xff); |
| 2087 | buf[1] |= ((val >> 8) & 0xff); |
| 2088 | buf[0] |= (val & 0xff); |
| 2089 | } |
| 2090 | } |
| 2091 | break; |
| 2092 | case BFD_RELOC_64_PCREL: |
| 2093 | case BFD_RELOC_64: |
| 2094 | /* Add an imm instruction. First save the current instruction. */ |
| 2095 | for (i = 0; i < INST_WORD_SIZE; i++) |
| 2096 | buf[i + INST_WORD_SIZE] = buf[i]; |
| 2097 | |
| 2098 | /* Generate the imm instruction. */ |
| 2099 | opcode1 = (struct op_code_struct *) hash_find (opcode_hash_control, "imm"); |
| 2100 | if (opcode1 == NULL) |
| 2101 | { |
| 2102 | as_bad (_("unknown opcode \"%s\""), "imm"); |
| 2103 | return; |
| 2104 | } |
| 2105 | |
| 2106 | inst1 = opcode1->bit_sequence; |
| 2107 | if (fixP->fx_addsy == NULL || S_IS_DEFINED (fixP->fx_addsy)) |
| 2108 | inst1 |= ((val & 0xFFFF0000) >> 16) & IMM_MASK; |
| 2109 | |
| 2110 | buf[0] = INST_BYTE0 (inst1); |
| 2111 | buf[1] = INST_BYTE1 (inst1); |
| 2112 | buf[2] = INST_BYTE2 (inst1); |
| 2113 | buf[3] = INST_BYTE3 (inst1); |
| 2114 | |
| 2115 | /* Add the value only if the symbol is defined. */ |
| 2116 | if (fixP->fx_addsy == NULL || S_IS_DEFINED (fixP->fx_addsy)) |
| 2117 | { |
| 2118 | if (target_big_endian) |
| 2119 | { |
| 2120 | buf[6] |= ((val >> 8) & 0xff); |
| 2121 | buf[7] |= (val & 0xff); |
| 2122 | } |
| 2123 | else |
| 2124 | { |
| 2125 | buf[5] |= ((val >> 8) & 0xff); |
| 2126 | buf[4] |= (val & 0xff); |
| 2127 | } |
| 2128 | } |
| 2129 | break; |
| 2130 | |
| 2131 | case BFD_RELOC_MICROBLAZE_64_TLSDTPREL: |
| 2132 | case BFD_RELOC_MICROBLAZE_64_TLSGD: |
| 2133 | case BFD_RELOC_MICROBLAZE_64_TLSLD: |
| 2134 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
| 2135 | /* Fall through. */ |
| 2136 | |
| 2137 | case BFD_RELOC_MICROBLAZE_64_GOTPC: |
| 2138 | case BFD_RELOC_MICROBLAZE_64_GOT: |
| 2139 | case BFD_RELOC_MICROBLAZE_64_PLT: |
| 2140 | case BFD_RELOC_MICROBLAZE_64_GOTOFF: |
| 2141 | /* Add an imm instruction. First save the current instruction. */ |
| 2142 | for (i = 0; i < INST_WORD_SIZE; i++) |
| 2143 | buf[i + INST_WORD_SIZE] = buf[i]; |
| 2144 | |
| 2145 | /* Generate the imm instruction. */ |
| 2146 | opcode1 = (struct op_code_struct *) hash_find (opcode_hash_control, "imm"); |
| 2147 | if (opcode1 == NULL) |
| 2148 | { |
| 2149 | as_bad (_("unknown opcode \"%s\""), "imm"); |
| 2150 | return; |
| 2151 | } |
| 2152 | |
| 2153 | inst1 = opcode1->bit_sequence; |
| 2154 | |
| 2155 | /* We can fixup call to a defined non-global address |
| 2156 | within the same section only. */ |
| 2157 | buf[0] = INST_BYTE0 (inst1); |
| 2158 | buf[1] = INST_BYTE1 (inst1); |
| 2159 | buf[2] = INST_BYTE2 (inst1); |
| 2160 | buf[3] = INST_BYTE3 (inst1); |
| 2161 | return; |
| 2162 | |
| 2163 | default: |
| 2164 | break; |
| 2165 | } |
| 2166 | |
| 2167 | if (fixP->fx_addsy == NULL) |
| 2168 | { |
| 2169 | /* This fixup has been resolved. Create a reloc in case the linker |
| 2170 | moves code around due to relaxing. */ |
| 2171 | if (fixP->fx_r_type == BFD_RELOC_64_PCREL) |
| 2172 | fixP->fx_r_type = BFD_RELOC_MICROBLAZE_64_NONE; |
| 2173 | else |
| 2174 | fixP->fx_r_type = BFD_RELOC_NONE; |
| 2175 | fixP->fx_addsy = section_symbol (absolute_section); |
| 2176 | } |
| 2177 | return; |
| 2178 | } |
| 2179 | |
| 2180 | void |
| 2181 | md_operand (expressionS * expressionP) |
| 2182 | { |
| 2183 | /* Ignore leading hash symbol, if present. */ |
| 2184 | if (*input_line_pointer == '#') |
| 2185 | { |
| 2186 | input_line_pointer ++; |
| 2187 | expression (expressionP); |
| 2188 | } |
| 2189 | } |
| 2190 | |
| 2191 | /* Called just before address relaxation, return the length |
| 2192 | by which a fragment must grow to reach it's destination. */ |
| 2193 | |
| 2194 | int |
| 2195 | md_estimate_size_before_relax (fragS * fragP, |
| 2196 | segT segment_type) |
| 2197 | { |
| 2198 | sbss_segment = bfd_get_section_by_name (stdoutput, ".sbss"); |
| 2199 | sbss2_segment = bfd_get_section_by_name (stdoutput, ".sbss2"); |
| 2200 | sdata_segment = bfd_get_section_by_name (stdoutput, ".sdata"); |
| 2201 | sdata2_segment = bfd_get_section_by_name (stdoutput, ".sdata2"); |
| 2202 | |
| 2203 | switch (fragP->fr_subtype) |
| 2204 | { |
| 2205 | case INST_PC_OFFSET: |
| 2206 | /* Used to be a PC-relative branch. */ |
| 2207 | if (!fragP->fr_symbol) |
| 2208 | { |
| 2209 | /* We know the abs value: Should never happen. */ |
| 2210 | as_bad (_("Absolute PC-relative value in relaxation code. Assembler error.....")); |
| 2211 | abort (); |
| 2212 | } |
| 2213 | else if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type && |
| 2214 | !S_IS_WEAK (fragP->fr_symbol)) |
| 2215 | { |
| 2216 | fragP->fr_subtype = DEFINED_PC_OFFSET; |
| 2217 | /* Don't know now whether we need an imm instruction. */ |
| 2218 | fragP->fr_var = INST_WORD_SIZE; |
| 2219 | } |
| 2220 | else if (S_IS_DEFINED (fragP->fr_symbol) |
| 2221 | && (((S_GET_SEGMENT (fragP->fr_symbol))->flags & SEC_CODE) == 0)) |
| 2222 | { |
| 2223 | /* Cannot have a PC-relative branch to a diff segment. */ |
| 2224 | as_bad (_("PC relative branch to label %s which is not in the instruction space"), |
| 2225 | S_GET_NAME (fragP->fr_symbol)); |
| 2226 | fragP->fr_subtype = UNDEFINED_PC_OFFSET; |
| 2227 | fragP->fr_var = INST_WORD_SIZE*2; |
| 2228 | } |
| 2229 | else |
| 2230 | { |
| 2231 | fragP->fr_subtype = UNDEFINED_PC_OFFSET; |
| 2232 | fragP->fr_var = INST_WORD_SIZE*2; |
| 2233 | } |
| 2234 | break; |
| 2235 | |
| 2236 | case INST_NO_OFFSET: |
| 2237 | /* Used to be a reference to somewhere which was unknown. */ |
| 2238 | if (fragP->fr_symbol) |
| 2239 | { |
| 2240 | if (fragP->fr_opcode == NULL) |
| 2241 | { |
| 2242 | /* Used as an absolute value. */ |
| 2243 | fragP->fr_subtype = DEFINED_ABS_SEGMENT; |
| 2244 | /* Variable part does not change. */ |
| 2245 | fragP->fr_var = INST_WORD_SIZE*2; |
| 2246 | } |
| 2247 | else if (streq (fragP->fr_opcode, str_microblaze_ro_anchor)) |
| 2248 | { |
| 2249 | /* It is accessed using the small data read only anchor. */ |
| 2250 | if ((S_GET_SEGMENT (fragP->fr_symbol) == bfd_com_section_ptr) |
| 2251 | || (S_GET_SEGMENT (fragP->fr_symbol) == sdata2_segment) |
| 2252 | || (S_GET_SEGMENT (fragP->fr_symbol) == sbss2_segment) |
| 2253 | || (! S_IS_DEFINED (fragP->fr_symbol))) |
| 2254 | { |
| 2255 | fragP->fr_subtype = DEFINED_RO_SEGMENT; |
| 2256 | fragP->fr_var = INST_WORD_SIZE; |
| 2257 | } |
| 2258 | else |
| 2259 | { |
| 2260 | /* Variable not in small data read only segment accessed |
| 2261 | using small data read only anchor. */ |
| 2262 | const char *file = fragP->fr_file ? fragP->fr_file : _("unknown"); |
| 2263 | |
| 2264 | as_bad_where (file, fragP->fr_line, |
| 2265 | _("Variable is accessed using small data read " |
| 2266 | "only anchor, but it is not in the small data " |
| 2267 | "read only section")); |
| 2268 | fragP->fr_subtype = DEFINED_RO_SEGMENT; |
| 2269 | fragP->fr_var = INST_WORD_SIZE; |
| 2270 | } |
| 2271 | } |
| 2272 | else if (streq (fragP->fr_opcode, str_microblaze_rw_anchor)) |
| 2273 | { |
| 2274 | if ((S_GET_SEGMENT (fragP->fr_symbol) == bfd_com_section_ptr) |
| 2275 | || (S_GET_SEGMENT (fragP->fr_symbol) == sdata_segment) |
| 2276 | || (S_GET_SEGMENT (fragP->fr_symbol) == sbss_segment) |
| 2277 | || (!S_IS_DEFINED (fragP->fr_symbol))) |
| 2278 | { |
| 2279 | /* It is accessed using the small data read write anchor. */ |
| 2280 | fragP->fr_subtype = DEFINED_RW_SEGMENT; |
| 2281 | fragP->fr_var = INST_WORD_SIZE; |
| 2282 | } |
| 2283 | else |
| 2284 | { |
| 2285 | const char *file = fragP->fr_file ? fragP->fr_file : _("unknown"); |
| 2286 | |
| 2287 | as_bad_where (file, fragP->fr_line, |
| 2288 | _("Variable is accessed using small data read " |
| 2289 | "write anchor, but it is not in the small data " |
| 2290 | "read write section")); |
| 2291 | fragP->fr_subtype = DEFINED_RW_SEGMENT; |
| 2292 | fragP->fr_var = INST_WORD_SIZE; |
| 2293 | } |
| 2294 | } |
| 2295 | else |
| 2296 | { |
| 2297 | as_bad (_("Incorrect fr_opcode value in frag. Internal error.....")); |
| 2298 | abort (); |
| 2299 | } |
| 2300 | } |
| 2301 | else |
| 2302 | { |
| 2303 | /* We know the abs value: Should never happen. */ |
| 2304 | as_bad (_("Absolute value in relaxation code. Assembler error.....")); |
| 2305 | abort (); |
| 2306 | } |
| 2307 | break; |
| 2308 | |
| 2309 | case UNDEFINED_PC_OFFSET: |
| 2310 | case LARGE_DEFINED_PC_OFFSET: |
| 2311 | case DEFINED_ABS_SEGMENT: |
| 2312 | case GOT_OFFSET: |
| 2313 | case PLT_OFFSET: |
| 2314 | case GOTOFF_OFFSET: |
| 2315 | case TLSGD_OFFSET: |
| 2316 | case TLSLD_OFFSET: |
| 2317 | case TLSTPREL_OFFSET: |
| 2318 | case TLSDTPREL_OFFSET: |
| 2319 | fragP->fr_var = INST_WORD_SIZE*2; |
| 2320 | break; |
| 2321 | case DEFINED_RO_SEGMENT: |
| 2322 | case DEFINED_RW_SEGMENT: |
| 2323 | case DEFINED_PC_OFFSET: |
| 2324 | case TLSDTPMOD_OFFSET: |
| 2325 | fragP->fr_var = INST_WORD_SIZE; |
| 2326 | break; |
| 2327 | default: |
| 2328 | abort (); |
| 2329 | } |
| 2330 | |
| 2331 | return fragP->fr_var; |
| 2332 | } |
| 2333 | |
| 2334 | /* Put number into target byte order. */ |
| 2335 | |
| 2336 | void |
| 2337 | md_number_to_chars (char * ptr, valueT use, int nbytes) |
| 2338 | { |
| 2339 | if (target_big_endian) |
| 2340 | number_to_chars_bigendian (ptr, use, nbytes); |
| 2341 | else |
| 2342 | number_to_chars_littleendian (ptr, use, nbytes); |
| 2343 | } |
| 2344 | |
| 2345 | /* Round up a section size to the appropriate boundary. */ |
| 2346 | |
| 2347 | valueT |
| 2348 | md_section_align (segT segment ATTRIBUTE_UNUSED, valueT size) |
| 2349 | { |
| 2350 | return size; /* Byte alignment is fine. */ |
| 2351 | } |
| 2352 | |
| 2353 | |
| 2354 | /* The location from which a PC relative jump should be calculated, |
| 2355 | given a PC relative reloc. */ |
| 2356 | |
| 2357 | long |
| 2358 | md_pcrel_from_section (fixS * fixp, segT sec ATTRIBUTE_UNUSED) |
| 2359 | { |
| 2360 | #ifdef OBJ_ELF |
| 2361 | /* If the symbol is undefined or defined in another section |
| 2362 | we leave the add number alone for the linker to fix it later. |
| 2363 | Only account for the PC pre-bump (No PC-pre-bump on the Microblaze). */ |
| 2364 | |
| 2365 | if (fixp->fx_addsy != (symbolS *) NULL |
| 2366 | && (!S_IS_DEFINED (fixp->fx_addsy) |
| 2367 | || (S_GET_SEGMENT (fixp->fx_addsy) != sec))) |
| 2368 | return 0; |
| 2369 | else |
| 2370 | { |
| 2371 | /* The case where we are going to resolve things... */ |
| 2372 | if (fixp->fx_r_type == BFD_RELOC_64_PCREL) |
| 2373 | return fixp->fx_where + fixp->fx_frag->fr_address + INST_WORD_SIZE; |
| 2374 | else |
| 2375 | return fixp->fx_where + fixp->fx_frag->fr_address; |
| 2376 | } |
| 2377 | #endif |
| 2378 | } |
| 2379 | |
| 2380 | |
| 2381 | #define F(SZ,PCREL) (((SZ) << 1) + (PCREL)) |
| 2382 | #define MAP(SZ,PCREL,TYPE) case F (SZ, PCREL): code = (TYPE); break |
| 2383 | |
| 2384 | arelent * |
| 2385 | tc_gen_reloc (asection * section ATTRIBUTE_UNUSED, fixS * fixp) |
| 2386 | { |
| 2387 | arelent * rel; |
| 2388 | bfd_reloc_code_real_type code; |
| 2389 | |
| 2390 | switch (fixp->fx_r_type) |
| 2391 | { |
| 2392 | case BFD_RELOC_NONE: |
| 2393 | case BFD_RELOC_MICROBLAZE_64_NONE: |
| 2394 | case BFD_RELOC_32: |
| 2395 | case BFD_RELOC_MICROBLAZE_32_LO: |
| 2396 | case BFD_RELOC_MICROBLAZE_32_LO_PCREL: |
| 2397 | case BFD_RELOC_RVA: |
| 2398 | case BFD_RELOC_64: |
| 2399 | case BFD_RELOC_64_PCREL: |
| 2400 | case BFD_RELOC_MICROBLAZE_32_ROSDA: |
| 2401 | case BFD_RELOC_MICROBLAZE_32_RWSDA: |
| 2402 | case BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM: |
| 2403 | case BFD_RELOC_MICROBLAZE_64_GOTPC: |
| 2404 | case BFD_RELOC_MICROBLAZE_64_GOT: |
| 2405 | case BFD_RELOC_MICROBLAZE_64_PLT: |
| 2406 | case BFD_RELOC_MICROBLAZE_64_GOTOFF: |
| 2407 | case BFD_RELOC_MICROBLAZE_32_GOTOFF: |
| 2408 | case BFD_RELOC_MICROBLAZE_64_TLSGD: |
| 2409 | case BFD_RELOC_MICROBLAZE_64_TLSLD: |
| 2410 | case BFD_RELOC_MICROBLAZE_32_TLSDTPMOD: |
| 2411 | case BFD_RELOC_MICROBLAZE_32_TLSDTPREL: |
| 2412 | case BFD_RELOC_MICROBLAZE_64_TLSDTPREL: |
| 2413 | case BFD_RELOC_MICROBLAZE_64_TLSGOTTPREL: |
| 2414 | case BFD_RELOC_MICROBLAZE_64_TLSTPREL: |
| 2415 | code = fixp->fx_r_type; |
| 2416 | break; |
| 2417 | |
| 2418 | default: |
| 2419 | switch (F (fixp->fx_size, fixp->fx_pcrel)) |
| 2420 | { |
| 2421 | MAP (1, 0, BFD_RELOC_8); |
| 2422 | MAP (2, 0, BFD_RELOC_16); |
| 2423 | MAP (4, 0, BFD_RELOC_32); |
| 2424 | MAP (1, 1, BFD_RELOC_8_PCREL); |
| 2425 | MAP (2, 1, BFD_RELOC_16_PCREL); |
| 2426 | MAP (4, 1, BFD_RELOC_32_PCREL); |
| 2427 | default: |
| 2428 | code = fixp->fx_r_type; |
| 2429 | as_bad (_("Can not do %d byte %srelocation"), |
| 2430 | fixp->fx_size, |
| 2431 | fixp->fx_pcrel ? _("pc-relative") : ""); |
| 2432 | } |
| 2433 | break; |
| 2434 | } |
| 2435 | |
| 2436 | rel = XNEW (arelent); |
| 2437 | rel->sym_ptr_ptr = XNEW (asymbol *); |
| 2438 | |
| 2439 | if (code == BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM) |
| 2440 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); |
| 2441 | else |
| 2442 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 2443 | |
| 2444 | rel->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2445 | /* Always pass the addend along! */ |
| 2446 | rel->addend = fixp->fx_offset; |
| 2447 | rel->howto = bfd_reloc_type_lookup (stdoutput, code); |
| 2448 | |
| 2449 | if (rel->howto == NULL) |
| 2450 | { |
| 2451 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 2452 | _("Cannot represent relocation type %s"), |
| 2453 | bfd_get_reloc_code_name (code)); |
| 2454 | |
| 2455 | /* Set howto to a garbage value so that we can keep going. */ |
| 2456 | rel->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); |
| 2457 | gas_assert (rel->howto != NULL); |
| 2458 | } |
| 2459 | return rel; |
| 2460 | } |
| 2461 | |
| 2462 | int |
| 2463 | md_parse_option (int c, const char * arg ATTRIBUTE_UNUSED) |
| 2464 | { |
| 2465 | switch (c) |
| 2466 | { |
| 2467 | case OPTION_EB: |
| 2468 | target_big_endian = 1; |
| 2469 | break; |
| 2470 | case OPTION_EL: |
| 2471 | target_big_endian = 0; |
| 2472 | break; |
| 2473 | default: |
| 2474 | return 0; |
| 2475 | } |
| 2476 | return 1; |
| 2477 | } |
| 2478 | |
| 2479 | void |
| 2480 | md_show_usage (FILE * stream ATTRIBUTE_UNUSED) |
| 2481 | { |
| 2482 | /* fprintf(stream, _("\ |
| 2483 | MicroBlaze options:\n\ |
| 2484 | -noSmall Data in the comm and data sections do not go into the small data section\n")); */ |
| 2485 | } |
| 2486 | |
| 2487 | |
| 2488 | /* Create a fixup for a cons expression. If parse_cons_expression_microblaze |
| 2489 | found a machine specific op in an expression, |
| 2490 | then we create relocs accordingly. */ |
| 2491 | |
| 2492 | void |
| 2493 | cons_fix_new_microblaze (fragS * frag, |
| 2494 | int where, |
| 2495 | int size, |
| 2496 | expressionS *exp, |
| 2497 | bfd_reloc_code_real_type r) |
| 2498 | { |
| 2499 | if ((exp->X_op == O_subtract) && (exp->X_add_symbol) && |
| 2500 | (exp->X_op_symbol) && (now_seg != absolute_section) && (size == 4) |
| 2501 | && (!S_IS_LOCAL (exp->X_op_symbol))) |
| 2502 | r = BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM; |
| 2503 | else if (exp->X_md == IMM_GOTOFF && exp->X_op == O_symbol_rva) |
| 2504 | { |
| 2505 | exp->X_op = O_symbol; |
| 2506 | r = BFD_RELOC_MICROBLAZE_32_GOTOFF; |
| 2507 | } |
| 2508 | else |
| 2509 | { |
| 2510 | switch (size) |
| 2511 | { |
| 2512 | case 1: |
| 2513 | r = BFD_RELOC_8; |
| 2514 | break; |
| 2515 | case 2: |
| 2516 | r = BFD_RELOC_16; |
| 2517 | break; |
| 2518 | case 4: |
| 2519 | r = BFD_RELOC_32; |
| 2520 | break; |
| 2521 | case 8: |
| 2522 | r = BFD_RELOC_64; |
| 2523 | break; |
| 2524 | default: |
| 2525 | as_bad (_("unsupported BFD relocation size %u"), size); |
| 2526 | r = BFD_RELOC_32; |
| 2527 | break; |
| 2528 | } |
| 2529 | } |
| 2530 | fix_new_exp (frag, where, size, exp, 0, r); |
| 2531 | } |