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, 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
 439       fc = 0;
 440       match = 0;
 441       next_opindex = 0;
 442       insn = opcode->opcode;
 443       for (op_idx = 1, opindex_ptr = opcode->operands;
 444            *opindex_ptr != 0;
 445            opindex_ptr++, op_idx++)
 446         {
 447           const struct mn10300_operand *operand;
 448           expressionS ex;
 449
 450           if (next_opindex == 0)
 451             {
 452               operand = &mn10300_operands[*opindex_ptr];
 453             }
 454           else
 455             {
 456               operand = &mn10300_operands[next_opindex];
 457               next_opindex = 0;
 458             }
 459
 460           errmsg = NULL;
 461
 462           while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
 463             ++str;
 464
 465           /* Gather the operand. */
 466           hold = input_line_pointer;
 467           input_line_pointer = str;
 468
 469           if (operand->flags & MN10300_OPERAND_PAREN)
 470             {
 471               if (*input_line_pointer != ')' && *input_line_pointer != '(')
 472                 {
 473                   input_line_pointer = hold;
 474                   str = hold;
 475                   goto error;
 476                 }
 477               input_line_pointer++;
 478               goto keep_going;
 479             }
 480           /* See if we can match the operands.  */
 481           else if (operand->flags & MN10300_OPERAND_DREG)
 482             {
 483               if (!data_register_name (&ex))
 484                 {
 485                   input_line_pointer = hold;
 486                   str = hold;
 487                   goto error;
 488                 }
 489             }
 490           else if (operand->flags & MN10300_OPERAND_AREG)
 491             {
 492               if (!address_register_name (&ex))
 493                 {
 494                   input_line_pointer = hold;
 495                   str = hold;
 496                   goto error;
 497                 }
 498             }
 499           else if (operand->flags & MN10300_OPERAND_SP)
 500             {
 501               char *start = input_line_pointer;
 502               char c = get_symbol_end ();
 503
 504               if (strcmp (start, "sp") != 0)
 505                 {
 506                   *input_line_pointer = c;
 507                   input_line_pointer = hold;
 508                   str = hold;
 509                   goto error;
 510                 }
 511               *input_line_pointer = c;
 512               goto keep_going;
 513             }
 514           else if (operand->flags & MN10300_OPERAND_PSW)
 515             {
 516               char *start = input_line_pointer;
 517               char c = get_symbol_end ();
 518
 519               if (strcmp (start, "psw") != 0)
 520                 {
 521                   *input_line_pointer = c;
 522                   input_line_pointer = hold;
 523                   str = hold;
 524                   goto error;
 525                 }
 526               *input_line_pointer = c;
 527               goto keep_going;
 528             }
 529           else if (operand->flags & MN10300_OPERAND_MDR)
 530             {
 531               char *start = input_line_pointer;
 532               char c = get_symbol_end ();
 533
 534               if (strcmp (start, "mdr") != 0)
 535                 {
 536                   *input_line_pointer = c;
 537                   input_line_pointer = hold;
 538                   str = hold;
 539                   goto error;
 540                 }
 541               *input_line_pointer = c;
 542               goto keep_going;
 543             }
 544           else if (data_register_name (&ex))
 545             {
 546               input_line_pointer = hold;
 547               str = hold;
 548               goto error;
 549             }
 550           else if (address_register_name (&ex))
 551             {
 552               input_line_pointer = hold;
 553               str = hold;
 554               goto error;
 555             }
 556           else if (other_register_name (&ex))
 557             {
 558               input_line_pointer = hold;
 559               str = hold;
 560               goto error;
 561             }
 562           else if (*str == ')' || *str == '(')
 563             {
 564               input_line_pointer = hold;
 565               str = hold;
 566               goto error;
 567             }
 568           else
 569             {
 570               expression (&ex);
 571             }
 572
 573           switch (ex.X_op)
 574             {
 575             case O_illegal:
 576               errmsg = "illegal operand";
 577               goto error;
 578             case O_absent:
 579               errmsg = "missing operand";
 580               goto error;
 581             case O_register:
 582               if (operand->flags & (MN10300_OPERAND_DREG
 583                                     | MN10300_OPERAND_AREG) == 0)
 584                 {
 585                   input_line_pointer = hold;
 586                   str = hold;
 587                   goto error;
 588                 }
 589
 590               insn = mn10300_insert_operand (insn, operand, ex.X_add_number,
 591                                           (char *) NULL, 0);
 592               break;
 593
 594             case O_constant:
 595               /* If this operand can be promoted, and it doesn't
 596                  fit into the allocated bitfield for this insn,
 597                  then promote it (ie this opcode does not match).  */
 598               if (operand->flags & MN10300_OPERAND_PROMOTE
 599                   && ! check_operand (insn, operand, ex.X_add_number))
 600                 {
 601                   input_line_pointer = hold;
 602                   str = hold;
 603                   goto error;
 604                 }
 605
 606               insn = mn10300_insert_operand (insn, operand, ex.X_add_number,
 607                                           (char *) NULL, 0);
 608               break;
 609
 610             default:
 611               /* If this operand can be promoted, then this opcode didn't
 612                  match since we can't know if it needed promotion!  */
 613               if (operand->flags & MN10300_OPERAND_PROMOTE)
 614                 {
 615                   input_line_pointer = hold;
 616                   str = hold;
 617                   goto error;
 618                 }
 619
 620               /* We need to generate a fixup for this expression.  */
 621               if (fc >= MAX_INSN_FIXUPS)
 622                 as_fatal ("too many fixups");
 623               fixups[fc].exp = ex;
 624               fixups[fc].opindex = *opindex_ptr;
 625               fixups[fc].reloc = BFD_RELOC_UNUSED;
 626               ++fc;
 627               break;
 628             }
 629
 630 keep_going:
 631           str = input_line_pointer;
 632           input_line_pointer = hold;
 633
 634           while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
 635             ++str;
 636
 637         }
 638
 639       /* Make sure we used all the operands!  */
 640       if (*str != ',')
 641         match = 1;
 642
 643     error:
 644       if (match == 0)
 645         {
 646           next_opcode = opcode + 1;
 647           if (next_opcode->opcode != 0 && !strcmp(next_opcode->name, opcode->name))
 648             {
 649               opcode = next_opcode;
 650               continue;
 651             }
 652
 653           as_bad ("%s", errmsg);
 654           return;
 655         }
 656       break;
 657     }
 658
 659   while (isspace (*str))
 660     ++str;
 661
 662   if (*str != '\0')
 663     as_bad ("junk at end of line: `%s'", str);
 664
 665   input_line_pointer = str;
 666
 667   /* XXX */
 668   if (opcode->format == 1)
 669     size = 1;
 670
 671   if (opcode->format == 2 || opcode->format == 6)
 672     size = 2;
 673
 674   if (opcode->format == 3 || opcode->format == 7)
 675     size = 3;
 676
 677   if (opcode->format == 4)
 678     size = 5;
 679
 680   if (opcode->format == 5)
 681     size = 7;
 682
 683   if (opcode->format == 8)
 684     size = 4;
 685
 686   if (opcode->format == 9)
 687     size = 6;
 688
 689   if (opcode->format == 10)
 690     size = 8;
 691
 692
 693   /* Write out the instruction.  */
 694
 695   f = frag_more (size);
 696   if (size > 4)
 697     size = 4;
 698   md_number_to_chars (f, insn, size);
 699 }
 700
 701
 702 /* if while processing a fixup, a reloc really needs to be created */
 703 /* then it is done here */
 704
 705 arelent *
 706 tc_gen_reloc (seg, fixp)
 707      asection *seg;
 708      fixS *fixp;
 709 {
 710   arelent *reloc;
 711   reloc = (arelent *) bfd_alloc_by_size_t (stdoutput, sizeof (arelent));
 712   reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym;
 713   reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
 714   reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
 715   if (reloc->howto == (reloc_howto_type *) NULL)
 716     {
 717       as_bad_where (fixp->fx_file, fixp->fx_line,
 718                     "reloc %d not supported by object file format", (int)fixp->fx_r_type);
 719       return NULL;
 720     }
 721   reloc->addend = fixp->fx_addnumber;
 722   /*  printf("tc_gen_reloc: addr=%x  addend=%x\n", reloc->address, reloc->addend); */
 723   return reloc;
 724 }
 725
 726 int
 727 md_estimate_size_before_relax (fragp, seg)
 728      fragS *fragp;
 729      asection *seg;
 730 {
 731   return 0;
 732 }
 733
 734 long
 735 md_pcrel_from (fixp)
 736      fixS *fixp;
 737 {
 738   if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy))
 739     {
 740       /* The symbol is undefined.  Let the linker figure it out.  */
 741       return 0;
 742     }
 743   return fixp->fx_frag->fr_address + fixp->fx_where;
 744 }
 745
 746 int
 747 md_apply_fix3 (fixp, valuep, seg)
 748      fixS *fixp;
 749      valueT *valuep;
 750      segT seg;
 751 {
 752   valueT value;
 753   char *where;
 754
 755   fixp->fx_done = 1;
 756   return 0;
 757
 758   if (fixp->fx_addsy == (symbolS *) NULL)
 759     {
 760       value = *valuep;
 761       fixp->fx_done = 1;
 762     }
 763   else if (fixp->fx_pcrel)
 764     value = *valuep;
 765   else
 766     {
 767       value = fixp->fx_offset;
 768       if (fixp->fx_subsy != (symbolS *) NULL)
 769         {
 770           if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
 771             value -= S_GET_VALUE (fixp->fx_subsy);
 772           else
 773             {
 774               /* We don't actually support subtracting a symbol.  */
 775               as_bad_where (fixp->fx_file, fixp->fx_line,
 776                             "expression too complex");
 777             }
 778         }
 779     }
 780
 781   /* printf("md_apply_fix: value=0x%x  type=%d\n",  value, fixp->fx_r_type); */
 782
 783   if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
 784     {
 785       int opindex;
 786       const struct mn10300_operand *operand;
 787       char *where;
 788       unsigned long insn;
 789
 790       opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
 791       operand = &mn10300_operands[opindex];
 792
 793       /* Fetch the instruction, insert the fully resolved operand
 794          value, and stuff the instruction back again.
 795
 796          Note the instruction has been stored in little endian
 797          format!  */
 798       where = fixp->fx_frag->fr_literal + fixp->fx_where;
 799
 800       insn = bfd_getl32((unsigned char *) where);
 801       insn = mn10300_insert_operand (insn, operand, (offsetT) value,
 802                                   fixp->fx_file, fixp->fx_line);
 803       bfd_putl32((bfd_vma) insn, (unsigned char *) where);
 804
 805       if (fixp->fx_done)
 806         {
 807           /* Nothing else to do here. */
 808           return 1;
 809         }
 810
 811       /* Determine a BFD reloc value based on the operand information.
 812          We are only prepared to turn a few of the operands into relocs. */
 813
 814         {
 815           as_bad_where(fixp->fx_file, fixp->fx_line,
 816                        "unresolved expression that must be resolved");
 817           fixp->fx_done = 1;
 818           return 1;
 819         }
 820     }
 821   else if (fixp->fx_done)
 822     {
 823       /* We still have to insert the value into memory!  */
 824       where = fixp->fx_frag->fr_literal + fixp->fx_where;
 825       if (fixp->fx_size == 1)
 826         *where = value & 0xff;
 827       if (fixp->fx_size == 2)
 828         bfd_putl16(value & 0xffff, (unsigned char *) where);
 829       if (fixp->fx_size == 4)
 830         bfd_putl32(value, (unsigned char *) where);
 831     }
 832
 833   fixp->fx_addnumber = value;
 834   return 1;
 835 }
 836
 837 /* Insert an operand value into an instruction.  */
 838
 839 static unsigned long
 840 mn10300_insert_operand (insn, operand, val, file, line)
 841      unsigned long insn;
 842      const struct mn10300_operand *operand;
 843      offsetT val;
 844      char *file;
 845      unsigned int line;
 846 {
 847   if (operand->bits != 32)
 848     {
 849       long min, max;
 850       offsetT test;
 851
 852       if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
 853         {
 854           max = (1 << (operand->bits - 1)) - 1;
 855           min = - (1 << (operand->bits - 1));
 856         }
 857       else
 858         {
 859           max = (1 << operand->bits) - 1;
 860           min = 0;
 861         }
 862
 863       test = val;
 864
 865
 866       if (test < (offsetT) min || test > (offsetT) max)
 867         {
 868           const char *err =
 869             "operand out of range (%s not between %ld and %ld)";
 870           char buf[100];
 871
 872           sprint_value (buf, test);
 873           if (file == (char *) NULL)
 874             as_warn (err, buf, min, max);
 875           else
 876             as_warn_where (file, line, err, buf, min, max);
 877         }
 878     }
 879
 880   insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
 881   return insn;
 882 }
 883
 884 static unsigned long
 885 check_operand (insn, operand, val)
 886      unsigned long insn;
 887      const struct mn10300_operand *operand;
 888      offsetT val;
 889 {
 890   if (operand->bits != 32)
 891     {
 892       long min, max;
 893       offsetT test;
 894
 895       if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
 896         {
 897           max = (1 << (operand->bits - 1)) - 1;
 898           min = - (1 << (operand->bits - 1));
 899         }
 900       else
 901         {
 902           max = (1 << operand->bits) - 1;
 903           min = 0;
 904         }
 905
 906       test = val;
 907
 908
 909       if (test < (offsetT) min || test > (offsetT) max)
 910         return 0;
 911       else
 912         return 1;
 913     }
 914   return 1;
 915 }