gas/config/tc-mn10300.c

   1 /* tc-mn10300.c -- Assembler code for the Matsushita 10300
   2
   3    Copyright (C) 1996 Free Software Foundation.
   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 2, 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, 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include <stdio.h>
  23 #include <ctype.h>
  24 #include "as.h"
  25 #include "subsegs.h"
  26 #include "opcode/mn10300.h"
  27 \f
  28 /* Structure to hold information about predefined registers.  */
  29 struct reg_name
  30 {
  31   const char *name;
  32   int value;
  33 };
  34
  35 /* Generic assembler global variables which must be defined by all targets. */
  36
  37 /* Characters which always start a comment. */
  38 const char comment_chars[] = "#";
  39
  40 /* Characters which start a comment at the beginning of a line.  */
  41 const char line_comment_chars[] = ";#";
  42
  43 /* Characters which may be used to separate multiple commands on a
  44    single line.  */
  45 const char line_separator_chars[] = ";";
  46
  47 /* Characters which are used to indicate an exponent in a floating
  48    point number.  */
  49 const char EXP_CHARS[] = "eE";
  50
  51 /* Characters which mean that a number is a floating point constant,
  52    as in 0d1.0.  */
  53 const char FLT_CHARS[] = "dD";
  54 \f
  55
  56 /* local functions */
  57 static unsigned long mn10300
  58   PARAMS ((unsigned long insn, const struct mn10300_operand *operand,
  59            offsetT val, char *file, unsigned int line));
  60 static int reg_name_search PARAMS ((const struct reg_name *, int, const char *));
  61 static boolean register_name PARAMS ((expressionS *expressionP));
  62 static boolean system_register_name PARAMS ((expressionS *expressionP));
  63 static boolean cc_name PARAMS ((expressionS *expressionP));
  64
  65
  66 /* fixups */
  67 #define MAX_INSN_FIXUPS (5)
  68 struct mn10300_fixup
  69 {
  70   expressionS exp;
  71   int opindex;
  72   bfd_reloc_code_real_type reloc;
  73 };
  74 struct mn10300_fixup fixups[MAX_INSN_FIXUPS];
  75 static int fc;
  76 \f
  77 const char *md_shortopts = "";
  78 struct option md_longopts[] = {
  79   {NULL, no_argument, NULL, 0}
  80 };
  81 size_t md_longopts_size = sizeof(md_longopts);
  82
  83 /* The target specific pseudo-ops which we support.  */
  84 const pseudo_typeS md_pseudo_table[] =
  85 {
  86   { NULL,       NULL,           0 }
  87 };
  88
  89 /* Opcode hash table.  */
  90 static struct hash_control *mn10300_hash;
  91
  92 /* This table is sorted. Suitable for searching by a binary search. */
  93 static const struct reg_name data_registers[] =
  94 {
  95   { "d0", 0 },
  96   { "d1", 1 },
  97   { "d2", 2 },
  98   { "d3", 3 },
  99 };
 100 #define DATA_REG_NAME_CNT       (sizeof(data_registers) / sizeof(struct reg_name))
 101
 102 static const struct reg_name address_registers[] =
 103 {
 104   { "a0", 0 },
 105   { "a1", 1 },
 106   { "a2", 2 },
 107   { "a3", 3 },
 108 };
 109 #define ADDRESS_REG_NAME_CNT    (sizeof(address_registers) / sizeof(struct reg_name))
 110
 111 static const struct reg_name other_registers[] =
 112 {
 113   { "mdr", 0 },
 114   { "psw", 0 },
 115   { "sp", 0 },
 116 };
 117 #define OTHER_REG_NAME_CNT      (sizeof(other_registers) / sizeof(struct reg_name))
 118
 119 /* reg_name_search does a binary search of the given register table
 120    to see if "name" is a valid regiter name.  Returns the register
 121    number from the array on success, or -1 on failure. */
 122
 123 static int
 124 reg_name_search (regs, regcount, name)
 125      const struct reg_name *regs;
 126      int regcount;
 127      const char *name;
 128 {
 129   int middle, low, high;
 130   int cmp;
 131
 132   low = 0;
 133   high = regcount - 1;
 134
 135   do
 136     {
 137       middle = (low + high) / 2;
 138       cmp = strcasecmp (name, regs[middle].name);
 139       if (cmp < 0)
 140         high = middle - 1;
 141       else if (cmp > 0)
 142         low = middle + 1;
 143       else
 144           return regs[middle].value;
 145     }
 146   while (low <= high);
 147   return -1;
 148 }
 149
 150
 151 /* Summary of register_name().
 152  *
 153  * in: Input_line_pointer points to 1st char of operand.
 154  *
 155  * out: A expressionS.
 156  *      The operand may have been a register: in this case, X_op == O_register,
 157  *      X_add_number is set to the register number, and truth is returned.
 158  *      Input_line_pointer->(next non-blank) char after operand, or is in
 159  *      its original state.
 160  */
 161 static boolean
 162 data_register_name (expressionP)
 163      expressionS *expressionP;
 164 {
 165   int reg_number;
 166   char *name;
 167   char *start;
 168   char c;
 169
 170   /* Find the spelling of the operand */
 171   start = name = input_line_pointer;
 172
 173   c = get_symbol_end ();
 174   reg_number = reg_name_search (data_registers, DATA_REG_NAME_CNT, name);
 175
 176   /* look to see if it's in the register table */
 177   if (reg_number >= 0)
 178     {
 179       expressionP->X_op = O_register;
 180       expressionP->X_add_number = reg_number;
 181
 182       /* make the rest nice */
 183       expressionP->X_add_symbol = NULL;
 184       expressionP->X_op_symbol = NULL;
 185       *input_line_pointer = c;  /* put back the delimiting char */
 186       return true;
 187     }
 188   else
 189     {
 190       /* reset the line as if we had not done anything */
 191       *input_line_pointer = c;   /* put back the delimiting char */
 192       input_line_pointer = start; /* reset input_line pointer */
 193       return false;
 194     }
 195 }
 196
 197 /* Summary of register_name().
 198  *
 199  * in: Input_line_pointer points to 1st char of operand.
 200  *
 201  * out: A expressionS.
 202  *      The operand may have been a register: in this case, X_op == O_register,
 203  *      X_add_number is set to the register number, and truth is returned.
 204  *      Input_line_pointer->(next non-blank) char after operand, or is in
 205  *      its original state.
 206  */
 207 static boolean
 208 address_register_name (expressionP)
 209      expressionS *expressionP;
 210 {
 211   int reg_number;
 212   char *name;
 213   char *start;
 214   char c;
 215
 216   /* Find the spelling of the operand */
 217   start = name = input_line_pointer;
 218
 219   c = get_symbol_end ();
 220   reg_number = reg_name_search (address_registers, ADDRESS_REG_NAME_CNT, name);
 221
 222   /* look to see if it's in the register table */
 223   if (reg_number >= 0)
 224     {
 225       expressionP->X_op = O_register;
 226       expressionP->X_add_number = reg_number;
 227
 228       /* make the rest nice */
 229       expressionP->X_add_symbol = NULL;
 230       expressionP->X_op_symbol = NULL;
 231       *input_line_pointer = c;  /* put back the delimiting char */
 232       return true;
 233     }
 234   else
 235     {
 236       /* reset the line as if we had not done anything */
 237       *input_line_pointer = c;   /* put back the delimiting char */
 238       input_line_pointer = start; /* reset input_line pointer */
 239       return false;
 240     }
 241 }
 242
 243 /* Summary of register_name().
 244  *
 245  * in: Input_line_pointer points to 1st char of operand.
 246  *
 247  * out: A expressionS.
 248  *      The operand may have been a register: in this case, X_op == O_register,
 249  *      X_add_number is set to the register number, and truth is returned.
 250  *      Input_line_pointer->(next non-blank) char after operand, or is in
 251  *      its original state.
 252  */
 253 static boolean
 254 other_register_name (expressionP)
 255      expressionS *expressionP;
 256 {
 257   int reg_number;
 258   char *name;
 259   char *start;
 260   char c;
 261
 262   /* Find the spelling of the operand */
 263   start = name = input_line_pointer;
 264
 265   c = get_symbol_end ();
 266   reg_number = reg_name_search (other_registers, OTHER_REG_NAME_CNT, name);
 267
 268   /* look to see if it's in the register table */
 269   if (reg_number >= 0)
 270     {
 271       expressionP->X_op = O_register;
 272       expressionP->X_add_number = reg_number;
 273
 274       /* make the rest nice */
 275       expressionP->X_add_symbol = NULL;
 276       expressionP->X_op_symbol = NULL;
 277       *input_line_pointer = c;  /* put back the delimiting char */
 278       return true;
 279     }
 280   else
 281     {
 282       /* reset the line as if we had not done anything */
 283       *input_line_pointer = c;   /* put back the delimiting char */
 284       input_line_pointer = start; /* reset input_line pointer */
 285       return false;
 286     }
 287 }
 288
 289 void
 290 md_show_usage (stream)
 291   FILE *stream;
 292 {
 293   fprintf(stream, "MN10300 options:\n\
 294 none yet\n");
 295 }
 296
 297 int
 298 md_parse_option (c, arg)
 299      int c;
 300      char *arg;
 301 {
 302   return 0;
 303 }
 304
 305 symbolS *
 306 md_undefined_symbol (name)
 307   char *name;
 308 {
 309   return 0;
 310 }
 311
 312 char *
 313 md_atof (type, litp, sizep)
 314   int type;
 315   char *litp;
 316   int *sizep;
 317 {
 318   int prec;
 319   LITTLENUM_TYPE words[4];
 320   char *t;
 321   int i;
 322
 323   switch (type)
 324     {
 325     case 'f':
 326       prec = 2;
 327       break;
 328
 329     case 'd':
 330       prec = 4;
 331       break;
 332
 333     default:
 334       *sizep = 0;
 335       return "bad call to md_atof";
 336     }
 337
 338   t = atof_ieee (input_line_pointer, type, words);
 339   if (t)
 340     input_line_pointer = t;
 341
 342   *sizep = prec * 2;
 343
 344   for (i = prec - 1; i >= 0; i--)
 345     {
 346       md_number_to_chars (litp, (valueT) words[i], 2);
 347       litp += 2;
 348     }
 349
 350   return NULL;
 351 }
 352
 353
 354 void
 355 md_convert_frag (abfd, sec, fragP)
 356   bfd *abfd;
 357   asection *sec;
 358   fragS *fragP;
 359 {
 360   /* printf ("call to md_convert_frag \n"); */
 361   abort ();
 362 }
 363
 364 valueT
 365 md_section_align (seg, addr)
 366      asection *seg;
 367      valueT addr;
 368 {
 369   int align = bfd_get_section_alignment (stdoutput, seg);
 370   return ((addr + (1 << align) - 1) & (-1 << align));
 371 }
 372
 373 void
 374 md_begin ()
 375 {
 376   char *prev_name = "";
 377   register const struct mn10300_opcode *op;
 378
 379   mn10300_hash = hash_new();
 380
 381   /* Insert unique names into hash table.  The MN10300 instruction set
 382      has many identical opcode names that have different opcodes based
 383      on the operands.  This hash table then provides a quick index to
 384      the first opcode with a particular name in the opcode table.  */
 385
 386   op     = mn10300_opcodes;
 387   while (op->name)
 388     {
 389       if (strcmp (prev_name, op->name))
 390         {
 391           prev_name = (char *) op->name;
 392           hash_insert (mn10300_hash, op->name, (char *) op);
 393         }
 394       op++;
 395     }
 396 }
 397
 398 void
 399 md_assemble (str)
 400      char *str;
 401 {
 402   char *s;
 403   struct mn10300_opcode *opcode;
 404   struct mn10300_opcode *next_opcode;
 405   const unsigned char *opindex_ptr;
 406   int next_opindex;
 407   unsigned long insn, extension, size;
 408   char *f;
 409   int i;
 410   int match;
 411   bfd_reloc_code_real_type reloc;
 412
 413   /* Get the opcode.  */
 414   for (s = str; *s != '\0' && ! isspace (*s); s++)
 415     ;
 416   if (*s != '\0')
 417     *s++ = '\0';
 418
 419   /* find the first opcode with the proper name */
 420   opcode = (struct mn10300_opcode *)hash_find (mn10300_hash, str);
 421   if (opcode == NULL)
 422     {
 423       as_bad ("Unrecognized opcode: `%s'", str);
 424       return;
 425     }
 426
 427   str = s;
 428   while (isspace (*str))
 429     ++str;
 430
 431   input_line_pointer = str;
 432
 433   for(;;)
 434     {
 435       const char *errmsg = NULL;
 436       int op_idx;
 437       char *hold;
 438       int extra_shift = 0;
 439
 440       fc = 0;
 441       match = 0;
 442       next_opindex = 0;
 443       insn = opcode->opcode;
 444       extension = 0;
 445       for (op_idx = 1, opindex_ptr = opcode->operands;
 446            *opindex_ptr != 0;
 447            opindex_ptr++, op_idx++)
 448         {
 449           const struct mn10300_operand *operand;
 450           expressionS ex;
 451
 452           if (next_opindex == 0)
 453             {
 454               operand = &mn10300_operands[*opindex_ptr];
 455             }
 456           else
 457             {
 458               operand = &mn10300_operands[next_opindex];
 459               next_opindex = 0;
 460             }
 461
 462           errmsg = NULL;
 463
 464           while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
 465             ++str;
 466
 467           /* Gather the operand. */
 468           hold = input_line_pointer;
 469           input_line_pointer = str;
 470
 471           if (operand->flags & MN10300_OPERAND_PAREN)
 472             {
 473               if (*input_line_pointer != ')' && *input_line_pointer != '(')
 474                 {
 475                   input_line_pointer = hold;
 476                   str = hold;
 477                   goto error;
 478                 }
 479               input_line_pointer++;
 480               goto keep_going;
 481             }
 482           /* See if we can match the operands.  */
 483           else if (operand->flags & MN10300_OPERAND_DREG)
 484             {
 485               if (!data_register_name (&ex))
 486                 {
 487                   input_line_pointer = hold;
 488                   str = hold;
 489                   goto error;
 490                 }
 491             }
 492           else if (operand->flags & MN10300_OPERAND_AREG)
 493             {
 494               if (!address_register_name (&ex))
 495                 {
 496                   input_line_pointer = hold;
 497                   str = hold;
 498                   goto error;
 499                 }
 500             }
 501           else if (operand->flags & MN10300_OPERAND_SP)
 502             {
 503               char *start = input_line_pointer;
 504               char c = get_symbol_end ();
 505
 506               if (strcmp (start, "sp") != 0)
 507                 {
 508                   *input_line_pointer = c;
 509                   input_line_pointer = hold;
 510                   str = hold;
 511                   goto error;
 512                 }
 513               *input_line_pointer = c;
 514               goto keep_going;
 515             }
 516           else if (operand->flags & MN10300_OPERAND_PSW)
 517             {
 518               char *start = input_line_pointer;
 519               char c = get_symbol_end ();
 520
 521               if (strcmp (start, "psw") != 0)
 522                 {
 523                   *input_line_pointer = c;
 524                   input_line_pointer = hold;
 525                   str = hold;
 526                   goto error;
 527                 }
 528               *input_line_pointer = c;
 529               goto keep_going;
 530             }
 531           else if (operand->flags & MN10300_OPERAND_MDR)
 532             {
 533               char *start = input_line_pointer;
 534               char c = get_symbol_end ();
 535
 536               if (strcmp (start, "mdr") != 0)
 537                 {
 538                   *input_line_pointer = c;
 539                   input_line_pointer = hold;
 540                   str = hold;
 541                   goto error;
 542                 }
 543               *input_line_pointer = c;
 544               goto keep_going;
 545             }
 546           else if (data_register_name (&ex))
 547             {
 548               input_line_pointer = hold;
 549               str = hold;
 550               goto error;
 551             }
 552           else if (address_register_name (&ex))
 553             {
 554               input_line_pointer = hold;
 555               str = hold;
 556               goto error;
 557             }
 558           else if (other_register_name (&ex))
 559             {
 560               input_line_pointer = hold;
 561               str = hold;
 562               goto error;
 563             }
 564           else if (*str == ')' || *str == '(')
 565             {
 566               input_line_pointer = hold;
 567               str = hold;
 568               goto error;
 569             }
 570           else
 571             {
 572               expression (&ex);
 573             }
 574
 575           switch (ex.X_op)
 576             {
 577             case O_illegal:
 578               errmsg = "illegal operand";
 579               goto error;
 580             case O_absent:
 581               errmsg = "missing operand";
 582               goto error;
 583             case O_register:
 584               if (operand->flags & (MN10300_OPERAND_DREG
 585                                     | MN10300_OPERAND_AREG) == 0)
 586                 {
 587                   input_line_pointer = hold;
 588                   str = hold;
 589                   goto error;
 590                 }
 591
 592               if (opcode->format == FMT_D1 || opcode->format == FMT_S1)
 593                 extra_shift = 8;
 594               else if (opcode->format == FMT_D2 || opcode->format == FMT_D4
 595                        || opcode->format == FMT_S2 || opcode->format == FMT_S4
 596                        || opcode->format == FMT_S6 || opcode->format == FMT_D5)
 597                 extra_shift = 16;
 598               else
 599                 extra_shift = 0;
 600
 601               mn10300_insert_operand (&insn, &extension, operand,
 602                                       ex.X_add_number, (char *) NULL,
 603                                       0, extra_shift);
 604
 605               break;
 606
 607             case O_constant:
 608               /* If this operand can be promoted, and it doesn't
 609                  fit into the allocated bitfield for this insn,
 610                  then promote it (ie this opcode does not match).  */
 611               if (operand->flags & MN10300_OPERAND_PROMOTE
 612                   && ! check_operand (insn, operand, ex.X_add_number))
 613                 {
 614                   input_line_pointer = hold;
 615                   str = hold;
 616                   goto error;
 617                 }
 618
 619               mn10300_insert_operand (&insn, &extension, operand,
 620                                       ex.X_add_number, (char *) NULL,
 621                                       0, 0);
 622               break;
 623
 624             default:
 625               /* If this operand can be promoted, then this opcode didn't
 626                  match since we can't know if it needed promotion!  */
 627               if (operand->flags & MN10300_OPERAND_PROMOTE)
 628                 {
 629                   input_line_pointer = hold;
 630                   str = hold;
 631                   goto error;
 632                 }
 633
 634               /* We need to generate a fixup for this expression.  */
 635               if (fc >= MAX_INSN_FIXUPS)
 636                 as_fatal ("too many fixups");
 637               fixups[fc].exp = ex;
 638               fixups[fc].opindex = *opindex_ptr;
 639               fixups[fc].reloc = BFD_RELOC_UNUSED;
 640               ++fc;
 641               break;
 642             }
 643
 644 keep_going:
 645           str = input_line_pointer;
 646           input_line_pointer = hold;
 647
 648           while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
 649             ++str;
 650
 651         }
 652
 653       /* Make sure we used all the operands!  */
 654       if (*str != ',')
 655         match = 1;
 656
 657     error:
 658       if (match == 0)
 659         {
 660           next_opcode = opcode + 1;
 661           if (next_opcode->opcode != 0 && !strcmp(next_opcode->name, opcode->name))
 662             {
 663               opcode = next_opcode;
 664               continue;
 665             }
 666
 667           as_bad ("%s", errmsg);
 668           return;
 669         }
 670       break;
 671     }
 672
 673   while (isspace (*str))
 674     ++str;
 675
 676   if (*str != '\0')
 677     as_bad ("junk at end of line: `%s'", str);
 678
 679   input_line_pointer = str;
 680
 681   /* Determine the size of the instruction.  */
 682   if (opcode->format == FMT_S0)
 683     size = 1;
 684
 685   if (opcode->format == FMT_S1 || opcode->format == FMT_D0)
 686     size = 2;
 687
 688   if (opcode->format == FMT_S2 || opcode->format == FMT_D1)
 689     size = 3;
 690
 691   if (opcode->format == FMT_S4)
 692     size = 5;
 693
 694   if (opcode->format == FMT_S6 || opcode->format == FMT_D5)
 695     size = 7;
 696
 697   if (opcode->format == FMT_D2)
 698     size = 4;
 699
 700   if (opcode->format == FMT_D4)
 701     size = 6;
 702
 703   /* Write out the instruction.  */
 704
 705   f = frag_more (size);
 706   number_to_chars_bigendian (f, insn, size > 4 ? 4 : size);
 707   if (size > 4)
 708     number_to_chars_bigendian (f + 4, extension, size - 4);
 709 }
 710
 711
 712 /* if while processing a fixup, a reloc really needs to be created */
 713 /* then it is done here */
 714
 715 arelent *
 716 tc_gen_reloc (seg, fixp)
 717      asection *seg;
 718      fixS *fixp;
 719 {
 720   arelent *reloc;
 721   reloc = (arelent *) bfd_alloc_by_size_t (stdoutput, sizeof (arelent));
 722   reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym;
 723   reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
 724   reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
 725   if (reloc->howto == (reloc_howto_type *) NULL)
 726     {
 727       as_bad_where (fixp->fx_file, fixp->fx_line,
 728                     "reloc %d not supported by object file format", (int)fixp->fx_r_type);
 729       return NULL;
 730     }
 731   reloc->addend = fixp->fx_addnumber;
 732   /*  printf("tc_gen_reloc: addr=%x  addend=%x\n", reloc->address, reloc->addend); */
 733   return reloc;
 734 }
 735
 736 int
 737 md_estimate_size_before_relax (fragp, seg)
 738      fragS *fragp;
 739      asection *seg;
 740 {
 741   return 0;
 742 }
 743
 744 long
 745 md_pcrel_from (fixp)
 746      fixS *fixp;
 747 {
 748   if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy))
 749     {
 750       /* The symbol is undefined.  Let the linker figure it out.  */
 751       return 0;
 752     }
 753   return fixp->fx_frag->fr_address + fixp->fx_where;
 754 }
 755
 756 int
 757 md_apply_fix3 (fixp, valuep, seg)
 758      fixS *fixp;
 759      valueT *valuep;
 760      segT seg;
 761 {
 762   valueT value;
 763   char *where;
 764
 765   fixp->fx_done = 1;
 766   return 0;
 767
 768   if (fixp->fx_addsy == (symbolS *) NULL)
 769     {
 770       value = *valuep;
 771       fixp->fx_done = 1;
 772     }
 773   else if (fixp->fx_pcrel)
 774     value = *valuep;
 775   else
 776     {
 777       value = fixp->fx_offset;
 778       if (fixp->fx_subsy != (symbolS *) NULL)
 779         {
 780           if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
 781             value -= S_GET_VALUE (fixp->fx_subsy);
 782           else
 783             {
 784               /* We don't actually support subtracting a symbol.  */
 785               as_bad_where (fixp->fx_file, fixp->fx_line,
 786                             "expression too complex");
 787             }
 788         }
 789     }
 790
 791   /* printf("md_apply_fix: value=0x%x  type=%d\n",  value, fixp->fx_r_type); */
 792
 793   if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
 794     {
 795       int opindex;
 796       const struct mn10300_operand *operand;
 797       char *where;
 798       unsigned long insn, extension;
 799
 800       opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
 801       operand = &mn10300_operands[opindex];
 802
 803       /* Fetch the instruction, insert the fully resolved operand
 804          value, and stuff the instruction back again.
 805
 806          Note the instruction has been stored in little endian
 807          format!  */
 808       where = fixp->fx_frag->fr_literal + fixp->fx_where;
 809
 810       insn = bfd_getl32((unsigned char *) where);
 811       extension = 0;
 812       mn10300_insert_operand (&insn, &extension, operand,
 813                               (offsetT) value, fixp->fx_file,
 814                               fixp->fx_line, 0);
 815       bfd_putl32((bfd_vma) insn, (unsigned char *) where);
 816
 817       if (fixp->fx_done)
 818         {
 819           /* Nothing else to do here. */
 820           return 1;
 821         }
 822
 823       /* Determine a BFD reloc value based on the operand information.
 824          We are only prepared to turn a few of the operands into relocs. */
 825
 826         {
 827           as_bad_where(fixp->fx_file, fixp->fx_line,
 828                        "unresolved expression that must be resolved");
 829           fixp->fx_done = 1;
 830           return 1;
 831         }
 832     }
 833   else if (fixp->fx_done)
 834     {
 835       /* We still have to insert the value into memory!  */
 836       where = fixp->fx_frag->fr_literal + fixp->fx_where;
 837       if (fixp->fx_size == 1)
 838         *where = value & 0xff;
 839       if (fixp->fx_size == 2)
 840         bfd_putl16(value & 0xffff, (unsigned char *) where);
 841       if (fixp->fx_size == 4)
 842         bfd_putl32(value, (unsigned char *) where);
 843     }
 844
 845   fixp->fx_addnumber = value;
 846   return 1;
 847 }
 848
 849 /* Insert an operand value into an instruction.  */
 850
 851 static void
 852 mn10300_insert_operand (insnp, extensionp, operand, val, file, line, shift)
 853      unsigned long *insnp;
 854      unsigned long *extensionp;
 855      const struct mn10300_operand *operand;
 856      offsetT val;
 857      char *file;
 858      unsigned int line;
 859      unsigned int shift;
 860 {
 861   if (operand->bits != 32)
 862     {
 863       long min, max;
 864       offsetT test;
 865
 866       if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
 867         {
 868           max = (1 << (operand->bits - 1)) - 1;
 869           min = - (1 << (operand->bits - 1));
 870         }
 871       else
 872         {
 873           max = (1 << operand->bits) - 1;
 874           min = 0;
 875         }
 876
 877       test = val;
 878
 879
 880       if (test < (offsetT) min || test > (offsetT) max)
 881         {
 882           const char *err =
 883             "operand out of range (%s not between %ld and %ld)";
 884           char buf[100];
 885
 886           sprint_value (buf, test);
 887           if (file == (char *) NULL)
 888             as_warn (err, buf, min, max);
 889           else
 890             as_warn_where (file, line, err, buf, min, max);
 891         }
 892     }
 893
 894   if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
 895     {
 896       *insnp |= (val >> 16) & 0xffff;
 897       *extensionp |= (val & 0xffff) << operand->shift;
 898     }
 899   else if ((operand->flags & MN10300_OPERAND_EXTENDED) == 0)
 900     {
 901       *insnp |= (((long) val & ((1 << operand->bits) - 1))
 902                  << (operand->shift + shift));
 903
 904       if ((operand->flags & MN10300_OPERAND_REPEATED) != 0)
 905         *insnp |= (((long) val & ((1 << operand->bits) - 1))
 906                    << (operand->shift + shift + 2));
 907     }
 908   else
 909     {
 910       *extensionp |= (((long) val & ((1 << operand->bits) - 1))
 911                       << (operand->shift + shift));
 912
 913       if ((operand->flags & MN10300_OPERAND_REPEATED) != 0)
 914         *extensionp |= (((long) val & ((1 << operand->bits) - 1))
 915                         << (operand->shift + shift + 2));
 916     }
 917 }
 918
 919 static unsigned long
 920 check_operand (insn, operand, val)
 921      unsigned long insn;
 922      const struct mn10300_operand *operand;
 923      offsetT val;
 924 {
 925   if (operand->bits != 32)
 926     {
 927       long min, max;
 928       offsetT test;
 929
 930       if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
 931         {
 932           max = (1 << (operand->bits - 1)) - 1;
 933           min = - (1 << (operand->bits - 1));
 934         }
 935       else
 936         {
 937           max = (1 << operand->bits) - 1;
 938           min = 0;
 939         }
 940
 941       test = val;
 942
 943
 944       if (test < (offsetT) min || test > (offsetT) max)
 945         return 0;
 946       else
 947         return 1;
 948     }
 949   return 1;
 950 }