gas/config/tc-z8k.c

   1 /* tc-z8k.c -- Assemble code for the Zilog Z800n
   2    Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GAS, the GNU Assembler.
   6
   7    GAS is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 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 the Free
  19    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20    02111-1307, USA.  */
  21
  22 /* Written By Steve Chamberlain <sac@cygnus.com>.  */
  23
  24 #define DEFINE_TABLE
  25 #include <stdio.h>
  26
  27 #include "as.h"
  28 #include "bfd.h"
  29 #include "safe-ctype.h"
  30 #include "opcodes/z8k-opc.h"
  31
  32 const char comment_chars[] = "!";
  33 const char line_comment_chars[] = "#";
  34 const char line_separator_chars[] = ";";
  35
  36 extern int machine;
  37 extern int coff_flags;
  38 int segmented_mode;
  39 const int md_reloc_size;
  40
  41 /* This is non-zero if target was set from the command line.  */
  42 static int z8k_target_from_cmdline;
  43
  44 static void s_segm PARAMS ((int));
  45 static void even PARAMS ((int));
  46 static int tohex PARAMS ((int));
  47 static void sval PARAMS ((int));
  48
  49 static void
  50 s_segm (segm)
  51      int segm;
  52 {
  53   if (segm)
  54     {
  55   segmented_mode = 1;
  56   machine = bfd_mach_z8001;
  57   coff_flags = F_Z8001;
  58     }
  59   else
  60     {
  61   segmented_mode = 0;
  62   machine = bfd_mach_z8002;
  63   coff_flags = F_Z8002;
  64     }
  65 }
  66
  67 static void
  68 even (ignore)
  69      int ignore ATTRIBUTE_UNUSED;
  70 {
  71   frag_align (1, 0, 0);
  72   record_alignment (now_seg, 1);
  73 }
  74
  75 static int
  76 tohex (c)
  77      int c;
  78 {
  79   if (ISDIGIT (c))
  80     return c - '0';
  81   if (ISLOWER (c))
  82     return c - 'a' + 10;
  83   return c - 'A' + 10;
  84 }
  85
  86 static void
  87 sval (ignore)
  88      int ignore ATTRIBUTE_UNUSED;
  89 {
  90   SKIP_WHITESPACE ();
  91   if (*input_line_pointer == '\'')
  92     {
  93       int c;
  94       input_line_pointer++;
  95       c = *input_line_pointer++;
  96       while (c != '\'')
  97         {
  98           if (c == '%')
  99             {
 100               c = (tohex (input_line_pointer[0]) << 4)
 101                 | tohex (input_line_pointer[1]);
 102               input_line_pointer += 2;
 103             }
 104           FRAG_APPEND_1_CHAR (c);
 105           c = *input_line_pointer++;
 106         }
 107       demand_empty_rest_of_line ();
 108     }
 109 }
 110
 111 /* This table describes all the machine specific pseudo-ops the assembler
 112    has to support.  The fields are:
 113    pseudo-op name without dot
 114    function to call to execute this pseudo-op
 115    Integer arg to pass to the function
 116    */
 117
 118 const pseudo_typeS md_pseudo_table[] = {
 119   {"int"    , cons            , 2},
 120   {"data.b" , cons            , 1},
 121   {"data.w" , cons            , 2},
 122   {"data.l" , cons            , 4},
 123   {"form"   , listing_psize   , 0},
 124   {"heading", listing_title   , 0},
 125   {"import" , s_ignore        , 0},
 126   {"page"   , listing_eject   , 0},
 127   {"program", s_ignore        , 0},
 128   {"z8001"  , s_segm          , 1},
 129   {"z8002"  , s_segm          , 0},
 130
 131   {"segm"   , s_segm          , 1},
 132   {"unsegm" , s_segm          , 0},
 133   {"unseg"  , s_segm          , 0},
 134   {"name"   , s_app_file      , 0},
 135   {"global" , s_globl         , 0},
 136   {"wval"   , cons            , 2},
 137   {"lval"   , cons            , 4},
 138   {"bval"   , cons            , 1},
 139   {"sval"   , sval            , 0},
 140   {"rsect"  , obj_coff_section, 0},
 141   {"sect"   , obj_coff_section, 0},
 142   {"block"  , s_space         , 0},
 143   {"even"   , even            , 0},
 144   {0        , 0               , 0}
 145 };
 146
 147 const char EXP_CHARS[] = "eE";
 148
 149 /* Chars that mean this number is a floating point constant.
 150    As in 0f12.456
 151    or    0d1.2345e12  */
 152 const char FLT_CHARS[] = "rRsSfFdDxXpP";
 153
 154 /* Opcode mnemonics.  */
 155 static struct hash_control *opcode_hash_control;
 156
 157 void
 158 md_begin ()
 159 {
 160   const opcode_entry_type *opcode;
 161   int idx = -1;
 162
 163   opcode_hash_control = hash_new ();
 164
 165   for (opcode = z8k_table; opcode->name; opcode++)
 166     {
 167       /* Only enter unique codes into the table.  */
 168       if (idx != opcode->idx)
 169         hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
 170       idx = opcode->idx;
 171     }
 172
 173   /* Default to z8002.  */
 174   if (! z8k_target_from_cmdline)
 175     s_segm (0);
 176
 177   /* Insert the pseudo ops, too.  */
 178   for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
 179     {
 180       opcode_entry_type *fake_opcode;
 181       fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type));
 182       fake_opcode->name = md_pseudo_table[idx].poc_name;
 183       fake_opcode->func = (void *) (md_pseudo_table + idx);
 184       fake_opcode->opcode = 250;
 185       hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode);
 186     }
 187 }
 188
 189 struct z8k_exp {
 190   char *e_beg;
 191   char *e_end;
 192   expressionS e_exp;
 193 };
 194
 195 typedef struct z8k_op {
 196   /* CLASS_REG_xxx.  */
 197   int regsize;
 198
 199   /* 0 .. 15.  */
 200   unsigned int reg;
 201
 202   int mode;
 203
 204   /* Any other register associated with the mode.  */
 205   unsigned int x_reg;
 206
 207   /* Any expression.  */
 208   expressionS exp;
 209 } op_type;
 210
 211 static expressionS *da_operand;
 212 static expressionS *imm_operand;
 213
 214 int reg[16];
 215 int the_cc;
 216 int the_ctrl;
 217 int the_flags;
 218 int the_interrupt;
 219
 220 static char *whatreg PARAMS ((int *, char *));
 221 static char *parse_reg PARAMS ((char *, int *, unsigned int *));
 222 static char *parse_exp PARAMS ((char *, expressionS *));
 223 static char *checkfor PARAMS ((char *, char));
 224 static void regword PARAMS ((int, char *));
 225 static void regaddr PARAMS ((int, char *));
 226 static void get_ctrl_operand
 227   PARAMS ((char **, struct z8k_op *, unsigned int));
 228 static void get_flags_operand
 229   PARAMS ((char **, struct z8k_op *, unsigned int));
 230 static void get_interrupt_operand
 231   PARAMS ((char **, struct z8k_op *, unsigned int));
 232 static void get_cc_operand
 233   PARAMS ((char **, struct z8k_op *, unsigned int));
 234 static void get_operand
 235   PARAMS ((char **, struct z8k_op *, unsigned int));
 236 static char *get_operands
 237   PARAMS ((const opcode_entry_type *, char *, op_type *));
 238 static opcode_entry_type *get_specific
 239   PARAMS ((opcode_entry_type *, op_type *));
 240 static void newfix
 241   PARAMS ((int, int, int, expressionS *));
 242 static char *apply_fix
 243   PARAMS ((char *, int, expressionS *, int));
 244 static void build_bytes
 245   PARAMS ((opcode_entry_type *, struct z8k_op *));
 246
 247 static char *
 248 whatreg (reg, src)
 249      int *reg;
 250      char *src;
 251 {
 252   if (ISDIGIT (src[1]))
 253     {
 254       *reg = (src[0] - '0') * 10 + src[1] - '0';
 255       return src + 2;
 256     }
 257   else
 258     {
 259       *reg = (src[0] - '0');
 260       return src + 1;
 261     }
 262 }
 263
 264 /* Parse operands
 265
 266    rh0-rh7, rl0-rl7
 267    r0-r15
 268    rr0-rr14
 269    rq0--rq12
 270    WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
 271    r0l,r0h,..r7l,r7h
 272    @WREG
 273    @WREG+
 274    @-WREG
 275    #const
 276 */
 277
 278 /* Try to parse a reg name.  Return a pointer to the first character
 279    in SRC after the reg name.  */
 280
 281 static char *
 282 parse_reg (src, mode, reg)
 283      char *src;
 284      int *mode;
 285      unsigned int *reg;
 286 {
 287   char *res = 0;
 288   char regno;
 289
 290   if (src[0] == 's' && src[1] == 'p' && (src[2] == 0 || src[2] == ','))
 291     {
 292       if (segmented_mode)
 293         {
 294           *mode = CLASS_REG_LONG;
 295           *reg = 14;
 296         }
 297       else
 298         {
 299           *mode = CLASS_REG_WORD;
 300           *reg = 15;
 301         }
 302       return src + 2;
 303     }
 304   if (src[0] == 'r')
 305     {
 306       if (src[1] == 'r')
 307         {
 308           if (src[2] < '0' || src[2] > '9')
 309             return res;  /* Assume no register name but a label starting with 'rr'.  */
 310           *mode = CLASS_REG_LONG;
 311           res = whatreg (reg, src + 2);
 312           regno = *reg;
 313           if (regno > 14)
 314             as_bad (_("register rr%d out of range"), regno);
 315           if (regno & 1)
 316             as_bad (_("register rr%d does not exist"), regno);
 317         }
 318       else if (src[1] == 'h')
 319         {
 320           if (src[2] < '0' || src[2] > '9')
 321             return res;  /* Assume no register name but a label starting with 'rh'.  */
 322           *mode = CLASS_REG_BYTE;
 323           res = whatreg (reg, src + 2);
 324           regno = *reg;
 325           if (regno > 7)
 326             as_bad (_("register rh%d out of range"), regno);
 327         }
 328       else if (src[1] == 'l')
 329         {
 330           if (src[2] < '0' || src[2] > '9')
 331             return res;  /* Assume no register name but a label starting with 'rl'.  */
 332           *mode = CLASS_REG_BYTE;
 333           res = whatreg (reg, src + 2);
 334           regno = *reg;
 335           if (regno > 7)
 336             as_bad (_("register rl%d out of range"), regno);
 337           *reg += 8;
 338         }
 339       else if (src[1] == 'q')
 340         {
 341           if (src[2] < '0' || src[2] > '9')
 342             return res;  /* Assume no register name but a label starting with 'rq'.  */
 343           *mode = CLASS_REG_QUAD;
 344           res = whatreg (reg, src + 2);
 345           regno = *reg;
 346           if (regno > 12)
 347             as_bad (_("register rq%d out of range"), regno);
 348           if (regno & 3)
 349             as_bad (_("register rq%d does not exist"), regno);
 350         }
 351       else
 352         {
 353           if (src[1] < '0' || src[1] > '9')
 354             return res;  /* Assume no register name but a label starting with 'r'.  */
 355           *mode = CLASS_REG_WORD;
 356           res = whatreg (reg, src + 1);
 357           regno = *reg;
 358           if (regno > 15)
 359             as_bad (_("register r%d out of range"), regno);
 360         }
 361     }
 362   return res;
 363 }
 364
 365 static char *
 366 parse_exp (s, op)
 367      char *s;
 368      expressionS *op;
 369 {
 370   char *save = input_line_pointer;
 371   char *new;
 372
 373   input_line_pointer = s;
 374   expression (op);
 375   if (op->X_op == O_absent)
 376     as_bad (_("missing operand"));
 377   new = input_line_pointer;
 378   input_line_pointer = save;
 379   return new;
 380 }
 381
 382 /* The many forms of operand:
 383
 384    <rb>
 385    <r>
 386    <rr>
 387    <rq>
 388    @r
 389    #exp
 390    exp
 391    exp(r)
 392    r(#exp)
 393    r(r)
 394    */
 395
 396 static char *
 397 checkfor (ptr, what)
 398      char *ptr;
 399      char what;
 400 {
 401   if (*ptr == what)
 402     ptr++;
 403   else
 404     as_bad (_("expected %c"), what);
 405
 406   return ptr;
 407 }
 408
 409 /* Make sure the mode supplied is the size of a word.  */
 410
 411 static void
 412 regword (mode, string)
 413      int mode;
 414      char *string;
 415 {
 416   int ok;
 417
 418   ok = CLASS_REG_WORD;
 419   if (ok != mode)
 420     {
 421       as_bad (_("register is wrong size for a word %s"), string);
 422     }
 423 }
 424
 425 /* Make sure the mode supplied is the size of an address.  */
 426
 427 static void
 428 regaddr (mode, string)
 429      int mode;
 430      char *string;
 431 {
 432   int ok;
 433
 434   ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD;
 435   if (ok != mode)
 436     {
 437       as_bad (_("register is wrong size for address %s"), string);
 438     }
 439 }
 440
 441 struct ctrl_names {
 442   int value;
 443   char *name;
 444 };
 445
 446 struct ctrl_names ctrl_table[] = {
 447   { 0x2, "fcw" },
 448   { 0x3, "refresh" },
 449   { 0x4, "psapseg" },
 450   { 0x5, "psapoff" },
 451   { 0x5, "psap" },
 452   { 0x6, "nspseg" },
 453   { 0x7, "nspoff" },
 454   { 0x7, "nsp" },
 455   { 0  , 0 }
 456 };
 457
 458 static void
 459 get_ctrl_operand (ptr, mode, dst)
 460      char **ptr;
 461      struct z8k_op *mode;
 462      unsigned int dst ATTRIBUTE_UNUSED;
 463 {
 464   char *src = *ptr;
 465   int i;
 466
 467   while (*src == ' ')
 468     src++;
 469
 470   mode->mode = CLASS_CTRL;
 471   for (i = 0; ctrl_table[i].name; i++)
 472     {
 473       int j;
 474
 475       for (j = 0; ctrl_table[i].name[j]; j++)
 476         {
 477           if (ctrl_table[i].name[j] != src[j])
 478             goto fail;
 479         }
 480       the_ctrl = ctrl_table[i].value;
 481       *ptr = src + j;
 482       return;
 483     fail:
 484       ;
 485     }
 486   the_ctrl = 0;
 487   return;
 488 }
 489
 490 struct flag_names {
 491   int value;
 492   char *name;
 493
 494 };
 495
 496 struct flag_names flag_table[] = {
 497   { 0x1, "p" },
 498   { 0x1, "v" },
 499   { 0x2, "s" },
 500   { 0x4, "z" },
 501   { 0x8, "c" },
 502   { 0x0, "+" },
 503   { 0, 0 }
 504 };
 505
 506 static void
 507 get_flags_operand (ptr, mode, dst)
 508      char **ptr;
 509      struct z8k_op *mode;
 510      unsigned int dst ATTRIBUTE_UNUSED;
 511 {
 512   char *src = *ptr;
 513   int i;
 514   int j;
 515
 516   while (*src == ' ')
 517     src++;
 518
 519   mode->mode = CLASS_FLAGS;
 520   the_flags = 0;
 521   for (j = 0; j <= 9; j++)
 522     {
 523       if (!src[j])
 524         goto done;
 525       for (i = 0; flag_table[i].name; i++)
 526         {
 527           if (flag_table[i].name[0] == src[j])
 528             {
 529               the_flags = the_flags | flag_table[i].value;
 530               goto match;
 531             }
 532         }
 533       goto done;
 534     match:
 535       ;
 536     }
 537  done:
 538   *ptr = src + j;
 539   return;
 540 }
 541
 542 struct interrupt_names {
 543   int value;
 544   char *name;
 545
 546 };
 547
 548 struct interrupt_names intr_table[] = {
 549   { 0x1, "nvi" },
 550   { 0x2, "vi" },
 551   { 0x3, "both" },
 552   { 0x3, "all" },
 553   { 0, 0 }
 554 };
 555
 556 static void
 557 get_interrupt_operand (ptr, mode, dst)
 558      char **ptr;
 559      struct z8k_op *mode;
 560      unsigned int dst ATTRIBUTE_UNUSED;
 561 {
 562   char *src = *ptr;
 563   int i;
 564
 565   while (*src == ' ')
 566     src++;
 567
 568   mode->mode = CLASS_IMM;
 569   for (i = 0; intr_table[i].name; i++)
 570     {
 571       int j;
 572
 573       for (j = 0; intr_table[i].name[j]; j++)
 574         {
 575           if (intr_table[i].name[j] != src[j])
 576             goto fail;
 577         }
 578       the_interrupt = intr_table[i].value;
 579       *ptr = src + j;
 580       return;
 581     fail:
 582       ;
 583     }
 584   /* No interrupt type specified, opcode won't do anything.  */
 585   as_warn (_("opcode has no effect"));
 586   the_interrupt = 0x0;
 587   return;
 588 }
 589
 590 struct cc_names {
 591   int value;
 592   char *name;
 593 };
 594
 595 struct cc_names table[] = {
 596   { 0x0, "f" },
 597   { 0x1, "lt" },
 598   { 0x2, "le" },
 599   { 0x3, "ule" },
 600   { 0x4, "ov" },
 601   { 0x4, "pe" },
 602   { 0x5, "mi" },
 603   { 0x6, "eq" },
 604   { 0x6, "z" },
 605   { 0x7, "c" },
 606   { 0x7, "ult" },
 607   { 0x8, "t" },
 608   { 0x9, "ge" },
 609   { 0xa, "gt" },
 610   { 0xb, "ugt" },
 611   { 0xc, "nov" },
 612   { 0xc, "po" },
 613   { 0xd, "pl" },
 614   { 0xe, "ne" },
 615   { 0xe, "nz" },
 616   { 0xf, "nc" },
 617   { 0xf, "uge" },
 618   { 0  ,  0 }
 619 };
 620
 621 static void
 622 get_cc_operand (ptr, mode, dst)
 623      char **ptr;
 624      struct z8k_op *mode;
 625      unsigned int dst ATTRIBUTE_UNUSED;
 626 {
 627   char *src = *ptr;
 628   int i;
 629
 630   while (*src == ' ')
 631     src++;
 632
 633   mode->mode = CLASS_CC;
 634   for (i = 0; table[i].name; i++)
 635     {
 636       int j;
 637
 638       for (j = 0; table[i].name[j]; j++)
 639         {
 640           if (table[i].name[j] != src[j])
 641             goto fail;
 642         }
 643       the_cc = table[i].value;
 644       *ptr = src + j;
 645       return;
 646     fail:
 647       ;
 648     }
 649   the_cc = 0x8;
 650 }
 651
 652 static void
 653 get_operand (ptr, mode, dst)
 654      char **ptr;
 655      struct z8k_op *mode;
 656      unsigned int dst ATTRIBUTE_UNUSED;
 657 {
 658   char *src = *ptr;
 659   char *end;
 660
 661   mode->mode = 0;
 662
 663   while (*src == ' ')
 664     src++;
 665   if (*src == '#')
 666     {
 667       mode->mode = CLASS_IMM;
 668       imm_operand = &(mode->exp);
 669       src = parse_exp (src + 1, &(mode->exp));
 670     }
 671   else if (*src == '@')
 672     {
 673       mode->mode = CLASS_IR;
 674       src = parse_reg (src + 1, &mode->regsize, &mode->reg);
 675     }
 676   else
 677     {
 678       int regn;
 679
 680       end = parse_reg (src, &mode->mode, &regn);
 681
 682       if (end)
 683         {
 684           int nw, nr;
 685
 686           src = end;
 687           if (*src == '(')
 688             {
 689               src++;
 690               end = parse_reg (src, &nw, &nr);
 691               if (end)
 692                 {
 693                   /* Got Ra(Rb).  */
 694                   src = end;
 695
 696                   if (*src != ')')
 697                     as_bad (_("Missing ) in ra(rb)"));
 698                   else
 699                     src++;
 700
 701                   regaddr (mode->mode, "ra(rb) ra");
 702 #if 0
 703                   regword (mode->mode, "ra(rb) rb");
 704 #endif
 705                   mode->mode = CLASS_BX;
 706                   mode->reg = regn;
 707                   mode->x_reg = nr;
 708                   reg[ARG_RX] = nr;
 709                 }
 710               else
 711                 {
 712                   /* Got Ra(disp).  */
 713                   if (*src == '#')
 714                     src++;
 715                   src = parse_exp (src, &(mode->exp));
 716                   src = checkfor (src, ')');
 717                   mode->mode = CLASS_BA;
 718                   mode->reg = regn;
 719                   mode->x_reg = 0;
 720                   imm_operand = &(mode->exp);
 721                 }
 722             }
 723           else
 724             {
 725               mode->reg = regn;
 726               mode->x_reg = 0;
 727             }
 728         }
 729       else
 730         {
 731           /* No initial reg.  */
 732           src = parse_exp (src, &(mode->exp));
 733           if (*src == '(')
 734             {
 735               src++;
 736               end = parse_reg (src, &(mode->mode), &regn);
 737               regword (mode->mode, "addr(Ra) ra");
 738               mode->mode = CLASS_X;
 739               mode->reg = regn;
 740               mode->x_reg = 0;
 741               da_operand = &(mode->exp);
 742               src = checkfor (end, ')');
 743             }
 744           else
 745             {
 746               /* Just an address.  */
 747               mode->mode = CLASS_DA;
 748               mode->reg = 0;
 749               mode->x_reg = 0;
 750               da_operand = &(mode->exp);
 751             }
 752         }
 753     }
 754   *ptr = src;
 755 }
 756
 757 static char *
 758 get_operands (opcode, op_end, operand)
 759      const opcode_entry_type *opcode;
 760      char *op_end;
 761      op_type *operand;
 762 {
 763   char *ptr = op_end;
 764   char *savptr;
 765
 766   ptr++;
 767   switch (opcode->noperands)
 768     {
 769     case 0:
 770       operand[0].mode = 0;
 771       operand[1].mode = 0;
 772       break;
 773
 774     case 1:
 775       if (opcode->arg_info[0] == CLASS_CC)
 776         get_cc_operand (&ptr, operand + 0, 0);
 777
 778       else if (opcode->arg_info[0] == CLASS_FLAGS)
 779         get_flags_operand (&ptr, operand + 0, 0);
 780
 781       else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2)))
 782         get_interrupt_operand (&ptr, operand + 0, 0);
 783
 784       else
 785         get_operand (&ptr, operand + 0, 0);
 786
 787       operand[1].mode = 0;
 788       break;
 789
 790     case 2:
 791       savptr = ptr;
 792       if (opcode->arg_info[0] == CLASS_CC)
 793         get_cc_operand (&ptr, operand + 0, 0);
 794
 795       else if (opcode->arg_info[0] == CLASS_CTRL)
 796         {
 797           get_ctrl_operand (&ptr, operand + 0, 0);
 798
 799           if (the_ctrl == 0)
 800             {
 801               ptr = savptr;
 802               get_operand (&ptr, operand + 0, 0);
 803
 804               if (ptr == 0)
 805                 return NULL;
 806               if (*ptr == ',')
 807                 ptr++;
 808               get_ctrl_operand (&ptr, operand + 1, 1);
 809               return ptr;
 810             }
 811         }
 812       else
 813         get_operand (&ptr, operand + 0, 0);
 814
 815       if (ptr == 0)
 816         return NULL;
 817       if (*ptr == ',')
 818         ptr++;
 819       get_operand (&ptr, operand + 1, 1);
 820       break;
 821
 822     case 3:
 823       get_operand (&ptr, operand + 0, 0);
 824       if (*ptr == ',')
 825         ptr++;
 826       get_operand (&ptr, operand + 1, 1);
 827       if (*ptr == ',')
 828         ptr++;
 829       get_operand (&ptr, operand + 2, 2);
 830       break;
 831
 832     case 4:
 833       get_operand (&ptr, operand + 0, 0);
 834       if (*ptr == ',')
 835         ptr++;
 836       get_operand (&ptr, operand + 1, 1);
 837       if (*ptr == ',')
 838         ptr++;
 839       get_operand (&ptr, operand + 2, 2);
 840       if (*ptr == ',')
 841         ptr++;
 842       get_cc_operand (&ptr, operand + 3, 3);
 843       break;
 844
 845     default:
 846       abort ();
 847     }
 848
 849   return ptr;
 850 }
 851
 852 /* Passed a pointer to a list of opcodes which use different
 853    addressing modes.  Return the opcode which matches the opcodes
 854    provided.  */
 855
 856 static opcode_entry_type *
 857 get_specific (opcode, operands)
 858      opcode_entry_type *opcode;
 859      op_type *operands;
 860 {
 861   opcode_entry_type *this_try = opcode;
 862   int found = 0;
 863   unsigned int noperands = opcode->noperands;
 864
 865   int this_index = opcode->idx;
 866
 867   while (this_index == opcode->idx && !found)
 868     {
 869       unsigned int i;
 870
 871       this_try = opcode++;
 872       for (i = 0; i < noperands; i++)
 873         {
 874           unsigned int mode = operands[i].mode;
 875
 876           if (((mode & CLASS_MASK) == CLASS_IR) && ((this_try->arg_info[i] & CLASS_MASK) == CLASS_IRO))
 877             {
 878               mode = operands[i].mode = (operands[i].mode & ~CLASS_MASK) | CLASS_IRO;
 879             }
 880
 881           if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
 882             {
 883               /* It could be a pc rel operand, if this is a da mode
 884                  and we like disps, then insert it.  */
 885
 886               if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP)
 887                 {
 888                   /* This is the case.  */
 889                   operands[i].mode = CLASS_DISP;
 890                 }
 891               else if (mode == CLASS_BA && this_try->arg_info[i])
 892                 {
 893                   /* Can't think of a way to turn what we've been
 894                      given into something that's OK.  */
 895                   goto fail;
 896                 }
 897               else if (this_try->arg_info[i] & CLASS_PR)
 898                 {
 899                   if (mode == CLASS_REG_LONG && segmented_mode)
 900                     {
 901                       /* OK.  */
 902                     }
 903                   else if (mode == CLASS_REG_WORD && !segmented_mode)
 904                     {
 905                       /* OK.  */
 906                     }
 907                   else
 908                     goto fail;
 909                 }
 910               else
 911                 goto fail;
 912             }
 913           switch (mode & CLASS_MASK)
 914             {
 915             default:
 916               break;
 917             case CLASS_IRO:
 918               if (operands[i].regsize != CLASS_REG_WORD)
 919                 as_bad (_("invalid indirect register size"));
 920               reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
 921               break;
 922             case CLASS_IR:
 923               if ((segmented_mode && operands[i].regsize != CLASS_REG_LONG)
 924                   || (!segmented_mode && operands[i].regsize != CLASS_REG_WORD))
 925                 as_bad (_("invalid indirect register size"));
 926               reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
 927               break;
 928             case CLASS_X:
 929             case CLASS_BA:
 930             case CLASS_BX:
 931             case CLASS_DISP:
 932             case CLASS_REG:
 933             case CLASS_REG_WORD:
 934             case CLASS_REG_BYTE:
 935             case CLASS_REG_QUAD:
 936             case CLASS_REG_LONG:
 937             case CLASS_REGN0:
 938               reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
 939               break;
 940             }
 941         }
 942
 943       found = 1;
 944     fail:
 945       ;
 946     }
 947   if (found)
 948     return this_try;
 949   else
 950     return 0;
 951 }
 952
 953 #if 0 /* Not used.  */
 954 static void
 955 check_operand (operand, width, string)
 956      struct z8k_op *operand;
 957      unsigned int width;
 958      char *string;
 959 {
 960   if (operand->exp.X_add_symbol == 0
 961       && operand->exp.X_op_symbol == 0)
 962     {
 963
 964       /* No symbol involved, let's look at offset, it's dangerous if
 965          any of the high bits are not 0 or ff's, find out by oring or
 966          anding with the width and seeing if the answer is 0 or all
 967          fs.  */
 968       if ((operand->exp.X_add_number & ~width) != 0 &&
 969           (operand->exp.X_add_number | width) != (~0))
 970         {
 971           as_warn (_("operand %s0x%x out of range"),
 972                    string, operand->exp.X_add_number);
 973         }
 974     }
 975
 976 }
 977 #endif
 978
 979 static char buffer[20];
 980
 981 static void
 982 newfix (ptr, type, size, operand)
 983      int ptr;
 984      int type;
 985      int size;   /* nibbles.  */
 986      expressionS *operand;
 987 {
 988   if (operand->X_add_symbol
 989       || operand->X_op_symbol
 990       || operand->X_add_number)
 991     {
 992       fix_new_exp (frag_now,
 993                    ptr,
 994                    size / 2,
 995                    operand,
 996                    0,
 997                    type);
 998     }
 999 }
1000
1001 static char *
1002 apply_fix (ptr, type, operand, size)
1003      char *ptr;
1004      int type;
1005      expressionS *operand;
1006      int size;   /* nibbles.  */
1007 {
1008   long n = operand->X_add_number;
1009
1010   newfix ((ptr - buffer) / 2, type, size + 1, operand);
1011   switch (size)
1012     {
1013     case 8:                     /* 8 nibbles == 32 bits.  */
1014       *ptr++ = n >> 28;
1015       *ptr++ = n >> 24;
1016       *ptr++ = n >> 20;
1017       *ptr++ = n >> 16;
1018     case 4:                     /* 4 nibbles == 16 bits.  */
1019       *ptr++ = n >> 12;
1020       *ptr++ = n >> 8;
1021     case 2:
1022       *ptr++ = n >> 4;
1023     case 1:
1024       *ptr++ = n >> 0;
1025       break;
1026     }
1027   return ptr;
1028 }
1029
1030 /* Now we know what sort of opcodes it is.  Let's build the bytes.  */
1031
1032 #define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
1033
1034 static void
1035 build_bytes (this_try, operand)
1036      opcode_entry_type *this_try;
1037      struct z8k_op *operand ATTRIBUTE_UNUSED;
1038 {
1039   char *output_ptr = buffer;
1040   int c;
1041   int nibble;
1042   unsigned int *class_ptr;
1043
1044   frag_wane (frag_now);
1045   frag_new (0);
1046
1047   memset (buffer, 0, sizeof (buffer));
1048   class_ptr = this_try->byte_info;
1049
1050   for (nibble = 0; (c = *class_ptr++); nibble++)
1051     {
1052
1053       switch (c & CLASS_MASK)
1054         {
1055         default:
1056           abort ();
1057
1058         case CLASS_ADDRESS:
1059           /* Direct address, we don't cope with the SS mode right now.  */
1060           if (segmented_mode)
1061             {
1062               /* da_operand->X_add_number |= 0x80000000;  --  Now set at relocation time.  */
1063               output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8);
1064             }
1065           else
1066             {
1067               output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
1068             }
1069           da_operand = 0;
1070           break;
1071         case CLASS_DISP8:
1072           /* pc rel 8 bit  */
1073           output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2);
1074           da_operand = 0;
1075           break;
1076
1077         case CLASS_0DISP7:
1078           /* pc rel 7 bit  */
1079           *output_ptr = 0;
1080           output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
1081           da_operand = 0;
1082           break;
1083
1084         case CLASS_1DISP7:
1085           /* pc rel 7 bit  */
1086           *output_ptr = 0x80;
1087           output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
1088           output_ptr[-2] = 0x8;
1089           da_operand = 0;
1090           break;
1091
1092         case CLASS_BIT_1OR2:
1093           *output_ptr = c & 0xf;
1094           if (imm_operand)
1095             {
1096               if (imm_operand->X_add_number == 2)
1097                 *output_ptr |= 2;
1098               else if (imm_operand->X_add_number != 1)
1099                 as_bad (_("immediate must be 1 or 2"));
1100             }
1101           else
1102             as_bad (_("immediate 1 or 2 expected"));
1103           output_ptr++;
1104           break;
1105         case CLASS_CC:
1106           *output_ptr++ = the_cc;
1107           break;
1108         case CLASS_0CCC:
1109           *output_ptr++ = the_ctrl;
1110           break;
1111         case CLASS_1CCC:
1112           *output_ptr++ = the_ctrl | 0x8;
1113           break;
1114         case CLASS_00II:
1115           *output_ptr++ = (~the_interrupt & 0x3);
1116           break;
1117         case CLASS_01II:
1118           *output_ptr++ = (~the_interrupt & 0x3) | 0x4;
1119           break;
1120         case CLASS_FLAGS:
1121           *output_ptr++ = the_flags;
1122           break;
1123         case CLASS_IGNORE:
1124         case CLASS_BIT:
1125           *output_ptr++ = c & 0xf;
1126           break;
1127         case CLASS_REGN0:
1128           if (reg[c & 0xf] == 0)
1129             as_bad (_("can't use R0 here"));
1130           /* Fall through.  */
1131         case CLASS_REG:
1132         case CLASS_REG_BYTE:
1133         case CLASS_REG_WORD:
1134         case CLASS_REG_LONG:
1135         case CLASS_REG_QUAD:
1136           /* Insert bit mattern of right reg.  */
1137           *output_ptr++ = reg[c & 0xf];
1138           break;
1139         case CLASS_DISP:
1140           switch (c & ARG_MASK)
1141             {
1142             case ARG_DISP12:
1143               output_ptr = apply_fix (output_ptr, R_CALLR, da_operand, 4);
1144               break;
1145             case ARG_DISP16:
1146               output_ptr = apply_fix (output_ptr, R_REL16, da_operand, 4);
1147               break;
1148             default:
1149               output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
1150             }
1151           da_operand = 0;
1152           break;
1153
1154         case CLASS_IMM:
1155           {
1156             switch (c & ARG_MASK)
1157               {
1158               case ARG_NIM4:
1159                 if (imm_operand->X_add_number > 15)
1160                   {
1161                     as_bad (_("immediate value out of range"));
1162                   }
1163                 imm_operand->X_add_number = -imm_operand->X_add_number;
1164                 output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
1165                 break;
1166               /*case ARG_IMMNMINUS1: not used.  */
1167               case ARG_IMM4M1:
1168                 imm_operand->X_add_number--;
1169                 /* Drop through.  */
1170               case ARG_IMM4:
1171                 if (imm_operand->X_add_number > 15)
1172                   {
1173                     as_bad (_("immediate value out of range"));
1174                   }
1175                 output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
1176                 break;
1177               case ARG_NIM8:
1178                 imm_operand->X_add_number = -imm_operand->X_add_number;
1179                 /* Drop through.  */
1180               case ARG_IMM8:
1181                 output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2);
1182                 break;
1183               case ARG_IMM16:
1184                 output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4);
1185                 break;
1186               case ARG_IMM32:
1187                 output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8);
1188                 break;
1189               default:
1190                 abort ();
1191               }
1192           }
1193         }
1194     }
1195
1196   /* Copy from the nibble buffer into the frag.  */
1197   {
1198     int length = (output_ptr - buffer) / 2;
1199     char *src = buffer;
1200     char *fragp = frag_more (length);
1201
1202     while (src < output_ptr)
1203       {
1204         *fragp = (src[0] << 4) | src[1];
1205         src += 2;
1206         fragp++;
1207       }
1208   }
1209 }
1210
1211 /* This is the guts of the machine-dependent assembler.  STR points to a
1212    machine dependent instruction.  This function is supposed to emit
1213    the frags/bytes it assembles to.  */
1214
1215 void
1216 md_assemble (str)
1217      char *str;
1218 {
1219   char c;
1220   char *op_start;
1221   char *op_end;
1222   struct z8k_op operand[3];
1223   opcode_entry_type *opcode;
1224   opcode_entry_type *prev_opcode;
1225
1226   /* Drop leading whitespace.  */
1227   while (*str == ' ')
1228     str++;
1229
1230   /* Find the op code end.  */
1231   for (op_start = op_end = str;
1232        *op_end != 0 && *op_end != ' ';
1233        op_end++)
1234     ;
1235
1236   if (op_end == op_start)
1237     {
1238       as_bad (_("can't find opcode "));
1239     }
1240   c = *op_end;
1241
1242   *op_end = 0;
1243
1244   opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start);
1245
1246   if (opcode == NULL)
1247     {
1248       as_bad (_("unknown opcode"));
1249       return;
1250     }
1251
1252   if (opcode->opcode == 250)
1253     {
1254       pseudo_typeS *p;
1255       char oc;
1256       char *old = input_line_pointer;
1257       *op_end = c;
1258
1259       /* Was really a pseudo op.  */
1260
1261       input_line_pointer = op_end;
1262
1263       oc = *old;
1264       *old = '\n';
1265       while (*input_line_pointer == ' ')
1266         input_line_pointer++;
1267       p = (pseudo_typeS *) (opcode->func);
1268
1269       (p->poc_handler) (p->poc_val);
1270       input_line_pointer = old;
1271       *old = oc;
1272     }
1273   else
1274     {
1275       char *new_input_line_pointer;
1276
1277       new_input_line_pointer = get_operands (opcode, op_end, operand);
1278       if (new_input_line_pointer)
1279         input_line_pointer = new_input_line_pointer;
1280       prev_opcode = opcode; /* XXX is this used ?? */
1281
1282       opcode = get_specific (opcode, operand);
1283
1284       if (opcode == 0)
1285         {
1286           /* Couldn't find an opcode which matched the operands.  */
1287           char *where = frag_more (2);
1288
1289           where[0] = 0x0;
1290           where[1] = 0x0;
1291
1292           as_bad (_("Can't find opcode to match operands"));
1293           return;
1294         }
1295
1296       build_bytes (opcode, operand);
1297     }
1298 }
1299
1300 void
1301 tc_crawl_symbol_chain (headers)
1302      object_headers *headers ATTRIBUTE_UNUSED;
1303 {
1304   printf (_("call to tc_crawl_symbol_chain \n"));
1305 }
1306
1307 /* We have no need to default values of symbols.  */
1308
1309 symbolS *
1310 md_undefined_symbol (name)
1311      char *name ATTRIBUTE_UNUSED;
1312 {
1313   return 0;
1314 }
1315
1316 void
1317 tc_headers_hook (headers)
1318      object_headers *headers ATTRIBUTE_UNUSED;
1319 {
1320   printf (_("call to tc_headers_hook \n"));
1321 }
1322
1323 /* Various routines to kill one day.  */
1324 /* Equal to MAX_PRECISION in atof-ieee.c.  */
1325 #define MAX_LITTLENUMS 6
1326
1327 /* Turn a string in input_line_pointer into a floating point constant
1328    of type TYPE, and store the appropriate bytes in *LITP.  The number
1329    of LITTLENUMS emitted is stored in *SIZEP.  An error message is
1330    returned, or NULL on OK.  */
1331
1332 char *
1333 md_atof (type, litP, sizeP)
1334      char type;
1335      char *litP;
1336      int *sizeP;
1337 {
1338   int prec;
1339   LITTLENUM_TYPE words[MAX_LITTLENUMS];
1340   LITTLENUM_TYPE *wordP;
1341   char *t;
1342
1343   switch (type)
1344     {
1345     case 'f':
1346     case 'F':
1347     case 's':
1348     case 'S':
1349       prec = 2;
1350       break;
1351
1352     case 'd':
1353     case 'D':
1354     case 'r':
1355     case 'R':
1356       prec = 4;
1357       break;
1358
1359     case 'x':
1360     case 'X':
1361       prec = 6;
1362       break;
1363
1364     case 'p':
1365     case 'P':
1366       prec = 6;
1367       break;
1368
1369     default:
1370       *sizeP = 0;
1371       return _("Bad call to MD_ATOF()");
1372     }
1373   t = atof_ieee (input_line_pointer, type, words);
1374   if (t)
1375     input_line_pointer = t;
1376
1377   *sizeP = prec * sizeof (LITTLENUM_TYPE);
1378   for (wordP = words; prec--;)
1379     {
1380       md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
1381       litP += sizeof (LITTLENUM_TYPE);
1382     }
1383   return 0;
1384 }
1385 \f
1386 const char *md_shortopts = "z:";
1387
1388 struct option md_longopts[] =
1389   {
1390 #define OPTION_RELAX  (OPTION_MD_BASE)
1391     {"linkrelax", no_argument, NULL, OPTION_RELAX},
1392     {NULL, no_argument, NULL, 0}
1393   };
1394
1395 size_t md_longopts_size = sizeof (md_longopts);
1396
1397 int
1398 md_parse_option (c, arg)
1399      int c;
1400      char *arg;
1401 {
1402   switch (c)
1403     {
1404     case 'z':
1405       if (!strcmp (arg, "8001"))
1406         s_segm (1);
1407       else if (!strcmp (arg, "8002"))
1408         s_segm (0);
1409       else
1410         {
1411           as_bad (_("invalid architecture -z%s"), arg);
1412           return 0;
1413         }
1414       z8k_target_from_cmdline = 1;
1415       break;
1416
1417     case OPTION_RELAX:
1418       linkrelax = 1;
1419       break;
1420
1421     default:
1422       return 0;
1423     }
1424
1425   return 1;
1426 }
1427
1428 void
1429 md_show_usage (stream)
1430      FILE *stream;
1431 {
1432   fprintf (stream, _("\
1433  Z8K options:\n\
1434   -z8001                  generate segmented code\n\
1435   -z8002                  generate unsegmented code\n\
1436   -linkrelax              create linker relaxable code\n"));
1437 }
1438 \f
1439 void
1440 md_convert_frag (headers, seg, fragP)
1441      object_headers *headers ATTRIBUTE_UNUSED;
1442      segT seg ATTRIBUTE_UNUSED;
1443      fragS *fragP ATTRIBUTE_UNUSED;
1444 {
1445   printf (_("call to md_convert_frag\n"));
1446   abort ();
1447 }
1448
1449 valueT
1450 md_section_align (seg, size)
1451      segT seg;
1452      valueT size;
1453 {
1454   return ((size + (1 << section_alignment[(int) seg]) - 1)
1455           & (-1 << section_alignment[(int) seg]));
1456 }
1457
1458 void
1459 md_apply_fix3 (fixP, valP, segment)
1460      fixS * fixP;
1461      valueT * valP;
1462      segT segment ATTRIBUTE_UNUSED;
1463 {
1464   long val = * (long *) valP;
1465   char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
1466
1467   switch (fixP->fx_r_type)
1468     {
1469     case R_IMM4L:
1470       buf[0] = (buf[0] & 0xf0) | (val & 0xf);
1471       break;
1472
1473     case R_JR:
1474       val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
1475       if (val & 1)
1476         as_bad (_("cannot branch to odd address"));
1477       val /= 2;
1478       if (val > 127 || val < -128)
1479         as_bad (_("relative jump out of range"));
1480       *buf++ = val;
1481       fixP->fx_no_overflow = 1;
1482       break;
1483
1484     case R_DISP7:
1485       val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
1486       if (val & 1)
1487         as_bad (_("cannot branch to odd address"));
1488       val /= 2;
1489       if (val > 0 || val < -128)
1490         as_bad (_("relative jump out of range"));
1491       *buf = (*buf & 0x80) | (val & 0x7f);
1492       fixP->fx_no_overflow = 1;
1493       break;
1494
1495     case R_CALLR:
1496       if (val > 8191 || val < -8192)
1497         as_bad (_("relative call out of range"));
1498       val = -val;
1499       *buf = (*buf & 0xf0) | ((val >> 8) & 0xf);
1500       buf++;
1501       *buf++ = val & 0xff;
1502       break;
1503
1504     case R_IMM8:
1505       *buf++ = val;
1506       break;
1507
1508     case R_IMM16:
1509       *buf++ = (val >> 8);
1510       *buf++ = val;
1511       break;
1512
1513     case R_IMM32:
1514       *buf++ = (val >> 24);
1515       *buf++ = (val >> 16);
1516       *buf++ = (val >> 8);
1517       *buf++ = val;
1518       break;
1519
1520     case R_REL16:
1521       val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
1522       if (val > 32767 || val < -32768)
1523         as_bad (_("relative address out of range"));
1524       *buf++ = (val >> 8);
1525       *buf++ = val;
1526       fixP->fx_no_overflow = 1;
1527       break;
1528
1529 #if 0
1530     case R_DA | R_SEG:
1531       *buf++ = (val >> 16);
1532       *buf++ = 0x00;
1533       *buf++ = (val >> 8);
1534       *buf++ = val;
1535       break;
1536 #endif
1537
1538     case 0:
1539       md_number_to_chars (buf, val, fixP->fx_size);
1540       break;
1541
1542     default:
1543       printf(_("md_apply_fix3: unknown r_type 0x%x\n"), fixP->fx_r_type);
1544       abort ();
1545     }
1546
1547   if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
1548     fixP->fx_done = 1;
1549 }
1550
1551 int
1552 md_estimate_size_before_relax (fragP, segment_type)
1553      register fragS *fragP ATTRIBUTE_UNUSED;
1554      register segT segment_type ATTRIBUTE_UNUSED;
1555 {
1556   printf (_("call to md_estimate_size_before_relax\n"));
1557   abort ();
1558 }
1559
1560 /* Put number into target byte order.  */
1561
1562 void
1563 md_number_to_chars (ptr, use, nbytes)
1564      char *ptr;
1565      valueT use;
1566      int nbytes;
1567 {
1568   number_to_chars_bigendian (ptr, use, nbytes);
1569 }
1570
1571 long
1572 md_pcrel_from (fixP)
1573      fixS *fixP ATTRIBUTE_UNUSED;
1574 {
1575   abort ();
1576 }
1577
1578 void
1579 tc_coff_symbol_emit_hook (s)
1580      symbolS *s ATTRIBUTE_UNUSED;
1581 {
1582 }
1583
1584 void
1585 tc_reloc_mangle (fix_ptr, intr, base)
1586      fixS *fix_ptr;
1587      struct internal_reloc *intr;
1588      bfd_vma base;
1589
1590 {
1591   symbolS *symbol_ptr;
1592
1593   if (fix_ptr->fx_addsy
1594       && fix_ptr->fx_subsy)
1595     {
1596       symbolS *add = fix_ptr->fx_addsy;
1597       symbolS *sub = fix_ptr->fx_subsy;
1598
1599       if (S_GET_SEGMENT (add) != S_GET_SEGMENT (sub))
1600         as_bad (_("Can't subtract symbols in different sections %s %s"),
1601                 S_GET_NAME (add), S_GET_NAME (sub));
1602       else
1603         {
1604           int diff = S_GET_VALUE (add) - S_GET_VALUE (sub);
1605
1606           fix_ptr->fx_addsy = 0;
1607           fix_ptr->fx_subsy = 0;
1608           fix_ptr->fx_offset += diff;
1609         }
1610     }
1611   symbol_ptr = fix_ptr->fx_addsy;
1612
1613   /* If this relocation is attached to a symbol then it's ok
1614      to output it.  */
1615   if (fix_ptr->fx_r_type == 0)
1616     {
1617       /* cons likes to create reloc32's whatever the size of the reloc.  */
1618       switch (fix_ptr->fx_size)
1619         {
1620         case 2:
1621           intr->r_type = R_IMM16;
1622           break;
1623         case 1:
1624           intr->r_type = R_IMM8;
1625           break;
1626         case 4:
1627           intr->r_type = R_IMM32;
1628           break;
1629         default:
1630           abort ();
1631         }
1632     }
1633   else
1634     intr->r_type = fix_ptr->fx_r_type;
1635
1636   intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base;
1637   intr->r_offset = fix_ptr->fx_offset;
1638
1639   if (symbol_ptr)
1640     intr->r_symndx = symbol_ptr->sy_number;
1641   else
1642     intr->r_symndx = -1;
1643 }