gdb/vax-tdep.c

   1 /* Print VAX instructions for GDB, the GNU debugger.
   2    Copyright 1986, 1989, 1991, 1992, 1995, 1996, 1998, 1999, 2000, 2002, 2003
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program 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 of the License, or
  10    (at your option) any later version.
  11
  12    This program 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 this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include "symtab.h"
  24 #include "opcode/vax.h"
  25 #include "gdbcore.h"
  26 #include "inferior.h"
  27 #include "regcache.h"
  28 #include "frame.h"
  29 #include "value.h"
  30 #include "arch-utils.h"
  31 #include "gdb_string.h"
  32 #include "osabi.h"
  33
  34 #include "vax-tdep.h"
  35
  36 static gdbarch_register_name_ftype vax_register_name;
  37 static gdbarch_register_byte_ftype vax_register_byte;
  38 static gdbarch_register_raw_size_ftype vax_register_raw_size;
  39 static gdbarch_register_virtual_size_ftype vax_register_virtual_size;
  40 static gdbarch_register_virtual_type_ftype vax_register_virtual_type;
  41
  42 static gdbarch_skip_prologue_ftype vax_skip_prologue;
  43 static gdbarch_frame_num_args_ftype vax_frame_num_args;
  44 static gdbarch_deprecated_frame_chain_ftype vax_frame_chain;
  45 static gdbarch_frame_args_address_ftype vax_frame_args_address;
  46 static gdbarch_frame_locals_address_ftype vax_frame_locals_address;
  47
  48 static gdbarch_deprecated_extract_return_value_ftype vax_extract_return_value;
  49 static gdbarch_deprecated_extract_struct_value_address_ftype
  50     vax_extract_struct_value_address;
  51
  52 static gdbarch_deprecated_push_dummy_frame_ftype vax_push_dummy_frame;
  53 static gdbarch_fix_call_dummy_ftype vax_fix_call_dummy;
  54
  55 /* Return 1 if P points to an invalid floating point value.
  56    LEN is the length in bytes -- not relevant on the Vax.  */
  57
  58 /* FIXME: cagney/2002-01-19: The macro below was originally defined in
  59    tm-vax.h and used in values.c.  Two problems.  Firstly this is a
  60    very non-portable and secondly it is wrong.  The VAX should be
  61    using floatformat and associated methods to identify and handle
  62    invalid floating-point values.  Adding to the poor target's woes
  63    there is no floatformat_vax_{f,d} and no TARGET_FLOAT_FORMAT
  64    et.al..  */
  65
  66 /* FIXME: cagney/2002-01-19: It turns out that the only thing that
  67    uses this macro is the vax disassembler code (so how old is this
  68    target?).  This target should instead be using the opcodes
  69    disassembler.  That allowing the macro to be eliminated.  */
  70
  71 #define INVALID_FLOAT(p, len) ((*(short *) p & 0xff80) == 0x8000)
  72
  73 /* Vax instructions are never longer than this.  */
  74 #define MAXLEN 62
  75
  76 /* Number of elements in the opcode table.  */
  77 #define NOPCODES (sizeof votstrs / sizeof votstrs[0])
  78
  79 static unsigned char *print_insn_arg ();
  80 \f
  81 static const char *
  82 vax_register_name (int regno)
  83 {
  84   static char *register_names[] =
  85   {
  86     "r0",  "r1",  "r2",  "r3", "r4", "r5", "r6", "r7",
  87     "r8",  "r9", "r10", "r11", "ap", "fp", "sp", "pc",
  88     "ps",
  89   };
  90
  91   if (regno < 0)
  92     return (NULL);
  93   if (regno >= (sizeof(register_names) / sizeof(*register_names)))
  94     return (NULL);
  95   return (register_names[regno]);
  96 }
  97
  98 static int
  99 vax_register_byte (int regno)
 100 {
 101   return (regno * 4);
 102 }
 103
 104 static int
 105 vax_register_raw_size (int regno)
 106 {
 107   return (4);
 108 }
 109
 110 static int
 111 vax_register_virtual_size (int regno)
 112 {
 113   return (4);
 114 }
 115
 116 static struct type *
 117 vax_register_virtual_type (int regno)
 118 {
 119   return (builtin_type_int);
 120 }
 121 \f
 122 static void
 123 vax_frame_init_saved_regs (struct frame_info *frame)
 124 {
 125   int regnum, regmask;
 126   CORE_ADDR next_addr;
 127
 128   if (get_frame_saved_regs (frame))
 129     return;
 130
 131   frame_saved_regs_zalloc (frame);
 132
 133   regmask = read_memory_integer (get_frame_base (frame) + 4, 4) >> 16;
 134
 135   next_addr = get_frame_base (frame) + 16;
 136
 137   /* regmask's low bit is for register 0, which is the first one
 138      what would be pushed.  */
 139   for (regnum = 0; regnum < VAX_AP_REGNUM; regnum++)
 140     {
 141       if (regmask & (1 << regnum))
 142         get_frame_saved_regs (frame)[regnum] = next_addr += 4;
 143     }
 144
 145   get_frame_saved_regs (frame)[SP_REGNUM] = next_addr + 4;
 146   if (regmask & (1 << DEPRECATED_FP_REGNUM))
 147     get_frame_saved_regs (frame)[SP_REGNUM] +=
 148       4 + (4 * read_memory_integer (next_addr + 4, 4));
 149
 150   get_frame_saved_regs (frame)[PC_REGNUM] = get_frame_base (frame) + 16;
 151   get_frame_saved_regs (frame)[DEPRECATED_FP_REGNUM] = get_frame_base (frame) + 12;
 152   get_frame_saved_regs (frame)[VAX_AP_REGNUM] = get_frame_base (frame) + 8;
 153   get_frame_saved_regs (frame)[PS_REGNUM] = get_frame_base (frame) + 4;
 154 }
 155
 156 /* Get saved user PC for sigtramp from sigcontext for BSD style sigtramp.  */
 157
 158 static CORE_ADDR
 159 vax_sigtramp_saved_pc (struct frame_info *frame)
 160 {
 161   CORE_ADDR sigcontext_addr;
 162   char *buf;
 163   int ptrbytes = TYPE_LENGTH (builtin_type_void_func_ptr);
 164   int sigcontext_offs = (2 * TARGET_INT_BIT) / TARGET_CHAR_BIT;
 165
 166   buf = alloca (ptrbytes);
 167   /* Get sigcontext address, it is the third parameter on the stack.  */
 168   if (get_next_frame (frame))
 169     sigcontext_addr = read_memory_typed_address
 170       (FRAME_ARGS_ADDRESS (get_next_frame (frame))
 171        + FRAME_ARGS_SKIP + sigcontext_offs,
 172        builtin_type_void_data_ptr);
 173   else
 174     sigcontext_addr = read_memory_typed_address
 175       (read_register (SP_REGNUM) + sigcontext_offs, builtin_type_void_data_ptr);
 176
 177   /* Don't cause a memory_error when accessing sigcontext in case the stack
 178      layout has changed or the stack is corrupt.  */
 179   target_read_memory (sigcontext_addr + SIGCONTEXT_PC_OFFSET, buf, ptrbytes);
 180   return extract_typed_address (buf, builtin_type_void_func_ptr);
 181 }
 182
 183 static CORE_ADDR
 184 vax_frame_saved_pc (struct frame_info *frame)
 185 {
 186   if ((get_frame_type (frame) == SIGTRAMP_FRAME))
 187     return (vax_sigtramp_saved_pc (frame)); /* XXXJRT */
 188
 189   return (read_memory_integer (get_frame_base (frame) + 16, 4));
 190 }
 191
 192 CORE_ADDR
 193 vax_frame_args_address_correct (struct frame_info *frame)
 194 {
 195   /* Cannot find the AP register value directly from the FP value.  Must
 196      find it saved in the frame called by this one, or in the AP register
 197      for the innermost frame.  However, there is no way to tell the
 198      difference between the innermost frame and a frame for which we
 199      just don't know the frame that it called (e.g. "info frame 0x7ffec789").
 200      For the sake of argument, suppose that the stack is somewhat trashed
 201      (which is one reason that "info frame" exists).  So, return 0 (indicating
 202      we don't know the address of the arglist) if we don't know what frame
 203      this frame calls.  */
 204   if (get_next_frame (frame))
 205     return (read_memory_integer (get_frame_base (get_next_frame (frame)) + 8, 4));
 206
 207   return (0);
 208 }
 209
 210 static CORE_ADDR
 211 vax_frame_args_address (struct frame_info *frame)
 212 {
 213   /* In most of GDB, getting the args address is too important to
 214      just say "I don't know".  This is sometimes wrong for functions
 215      that aren't on top of the stack, but c'est la vie.  */
 216   if (get_next_frame (frame))
 217     return (read_memory_integer (get_frame_base (get_next_frame (frame)) + 8, 4));
 218
 219   return (read_register (VAX_AP_REGNUM));
 220 }
 221
 222 static CORE_ADDR
 223 vax_frame_locals_address (struct frame_info *frame)
 224 {
 225   return (get_frame_base (frame));
 226 }
 227
 228 static int
 229 vax_frame_num_args (struct frame_info *fi)
 230 {
 231   return (0xff & read_memory_integer (FRAME_ARGS_ADDRESS (fi), 1));
 232 }
 233
 234 static CORE_ADDR
 235 vax_frame_chain (struct frame_info *frame)
 236 {
 237   /* In the case of the VAX, the frame's nominal address is the FP value,
 238      and 12 bytes later comes the saved previous FP value as a 4-byte word.  */
 239   if (inside_entry_file (get_frame_pc (frame)))
 240     return (0);
 241
 242   return (read_memory_integer (get_frame_base (frame) + 12, 4));
 243 }
 244 \f
 245 static void
 246 vax_push_dummy_frame (void)
 247 {
 248   CORE_ADDR sp = read_register (SP_REGNUM);
 249   int regnum;
 250
 251   sp = push_word (sp, 0);       /* arglist */
 252   for (regnum = 11; regnum >= 0; regnum--)
 253     sp = push_word (sp, read_register (regnum));
 254   sp = push_word (sp, read_register (PC_REGNUM));
 255   sp = push_word (sp, read_register (DEPRECATED_FP_REGNUM));
 256   sp = push_word (sp, read_register (VAX_AP_REGNUM));
 257   sp = push_word (sp, (read_register (PS_REGNUM) & 0xffef) + 0x2fff0000);
 258   sp = push_word (sp, 0);
 259   write_register (SP_REGNUM, sp);
 260   write_register (DEPRECATED_FP_REGNUM, sp);
 261   write_register (VAX_AP_REGNUM, sp + (17 * 4));
 262 }
 263
 264 static void
 265 vax_pop_frame (void)
 266 {
 267   CORE_ADDR fp = read_register (DEPRECATED_FP_REGNUM);
 268   int regnum;
 269   int regmask = read_memory_integer (fp + 4, 4);
 270
 271   write_register (PS_REGNUM,
 272                   (regmask & 0xffff)
 273                   | (read_register (PS_REGNUM) & 0xffff0000));
 274   write_register (PC_REGNUM, read_memory_integer (fp + 16, 4));
 275   write_register (DEPRECATED_FP_REGNUM, read_memory_integer (fp + 12, 4));
 276   write_register (VAX_AP_REGNUM, read_memory_integer (fp + 8, 4));
 277   fp += 16;
 278   for (regnum = 0; regnum < 12; regnum++)
 279     if (regmask & (0x10000 << regnum))
 280       write_register (regnum, read_memory_integer (fp += 4, 4));
 281   fp = fp + 4 + ((regmask >> 30) & 3);
 282   if (regmask & 0x20000000)
 283     {
 284       regnum = read_memory_integer (fp, 4);
 285       fp += (regnum + 1) * 4;
 286     }
 287   write_register (SP_REGNUM, fp);
 288   flush_cached_frames ();
 289 }
 290
 291 /* The VAX call dummy sequence:
 292
 293         calls #69, @#32323232
 294         bpt
 295
 296    It is 8 bytes long.  The address and argc are patched by
 297    vax_fix_call_dummy().  */
 298 static LONGEST vax_call_dummy_words[] = { 0x329f69fb, 0x03323232 };
 299 static int sizeof_vax_call_dummy_words = sizeof(vax_call_dummy_words);
 300
 301 static void
 302 vax_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs,
 303                     struct value **args, struct type *type, int gcc_p)
 304 {
 305   dummy[1] = nargs;
 306   store_unsigned_integer (dummy + 3, 4, fun);
 307 }
 308 \f
 309 static void
 310 vax_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
 311 {
 312   write_register (1, addr);
 313 }
 314
 315 static void
 316 vax_extract_return_value (struct type *valtype, char *regbuf, char *valbuf)
 317 {
 318   memcpy (valbuf, regbuf + REGISTER_BYTE (0), TYPE_LENGTH (valtype));
 319 }
 320
 321 static void
 322 vax_store_return_value (struct type *valtype, char *valbuf)
 323 {
 324   deprecated_write_register_bytes (0, valbuf, TYPE_LENGTH (valtype));
 325 }
 326
 327 static CORE_ADDR
 328 vax_extract_struct_value_address (char *regbuf)
 329 {
 330   return (extract_address (regbuf + REGISTER_BYTE (0), REGISTER_RAW_SIZE (0)));
 331 }
 332 \f
 333 static const unsigned char *
 334 vax_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
 335 {
 336   static const unsigned char vax_breakpoint[] = { 3 };
 337
 338   *lenptr = sizeof(vax_breakpoint);
 339   return (vax_breakpoint);
 340 }
 341 \f
 342 /* Advance PC across any function entry prologue instructions
 343    to reach some "real" code.  */
 344
 345 static CORE_ADDR
 346 vax_skip_prologue (CORE_ADDR pc)
 347 {
 348   register int op = (unsigned char) read_memory_integer (pc, 1);
 349   if (op == 0x11)
 350     pc += 2;                    /* skip brb */
 351   if (op == 0x31)
 352     pc += 3;                    /* skip brw */
 353   if (op == 0xC2
 354       && ((unsigned char) read_memory_integer (pc + 2, 1)) == 0x5E)
 355     pc += 3;                    /* skip subl2 */
 356   if (op == 0x9E
 357       && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xAE
 358       && ((unsigned char) read_memory_integer (pc + 3, 1)) == 0x5E)
 359     pc += 4;                    /* skip movab */
 360   if (op == 0x9E
 361       && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xCE
 362       && ((unsigned char) read_memory_integer (pc + 4, 1)) == 0x5E)
 363     pc += 5;                    /* skip movab */
 364   if (op == 0x9E
 365       && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xEE
 366       && ((unsigned char) read_memory_integer (pc + 6, 1)) == 0x5E)
 367     pc += 7;                    /* skip movab */
 368   return pc;
 369 }
 370
 371 static CORE_ADDR
 372 vax_saved_pc_after_call (struct frame_info *frame)
 373 {
 374   return (DEPRECATED_FRAME_SAVED_PC(frame));
 375 }
 376 \f
 377 /* Print the vax instruction at address MEMADDR in debugged memory,
 378    from disassembler info INFO.
 379    Returns length of the instruction, in bytes.  */
 380
 381 static int
 382 vax_print_insn (CORE_ADDR memaddr, disassemble_info *info)
 383 {
 384   unsigned char buffer[MAXLEN];
 385   register int i;
 386   register unsigned char *p;
 387   const char *d;
 388
 389   int status = (*info->read_memory_func) (memaddr, buffer, MAXLEN, info);
 390   if (status != 0)
 391     {
 392       (*info->memory_error_func) (status, memaddr, info);
 393       return -1;
 394     }
 395
 396   for (i = 0; i < NOPCODES; i++)
 397     if (votstrs[i].detail.code == buffer[0]
 398         || votstrs[i].detail.code == *(unsigned short *) buffer)
 399       break;
 400
 401   /* Handle undefined instructions.  */
 402   if (i == NOPCODES)
 403     {
 404       (*info->fprintf_func) (info->stream, "0%o", buffer[0]);
 405       return 1;
 406     }
 407
 408   (*info->fprintf_func) (info->stream, "%s", votstrs[i].name);
 409
 410   /* Point at first byte of argument data,
 411      and at descriptor for first argument.  */
 412   p = buffer + 1 + (votstrs[i].detail.code >= 0x100);
 413   d = votstrs[i].detail.args;
 414
 415   if (*d)
 416     (*info->fprintf_func) (info->stream, " ");
 417
 418   while (*d)
 419     {
 420       p = print_insn_arg (d, p, memaddr + (p - buffer), info);
 421       d += 2;
 422       if (*d)
 423         (*info->fprintf_func) (info->stream, ",");
 424     }
 425   return p - buffer;
 426 }
 427 \f
 428 static unsigned char *
 429 print_insn_arg (char *d, register char *p, CORE_ADDR addr,
 430                 disassemble_info *info)
 431 {
 432   register int regnum = *p & 0xf;
 433   float floatlitbuf;
 434
 435   if (*d == 'b')
 436     {
 437       if (d[1] == 'b')
 438         (*info->fprintf_func) (info->stream, "0x%x", addr + *p++ + 1);
 439       else
 440         {
 441           (*info->fprintf_func) (info->stream, "0x%x", addr + *(short *) p + 2);
 442           p += 2;
 443         }
 444     }
 445   else
 446     switch ((*p++ >> 4) & 0xf)
 447       {
 448       case 0:
 449       case 1:
 450       case 2:
 451       case 3:                   /* Literal mode */
 452         if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h')
 453           {
 454             *(int *) &floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4);
 455             (*info->fprintf_func) (info->stream, "$%f", floatlitbuf);
 456           }
 457         else
 458           (*info->fprintf_func) (info->stream, "$%d", p[-1] & 0x3f);
 459         break;
 460
 461       case 4:                   /* Indexed */
 462         p = (char *) print_insn_arg (d, p, addr + 1, info);
 463         (*info->fprintf_func) (info->stream, "[%s]", REGISTER_NAME (regnum));
 464         break;
 465
 466       case 5:                   /* Register */
 467         (*info->fprintf_func) (info->stream, REGISTER_NAME (regnum));
 468         break;
 469
 470       case 7:                   /* Autodecrement */
 471         (*info->fprintf_func) (info->stream, "-");
 472       case 6:                   /* Register deferred */
 473         (*info->fprintf_func) (info->stream, "(%s)", REGISTER_NAME (regnum));
 474         break;
 475
 476       case 9:                   /* Autoincrement deferred */
 477         (*info->fprintf_func) (info->stream, "@");
 478         if (regnum == PC_REGNUM)
 479           {
 480             (*info->fprintf_func) (info->stream, "#");
 481             info->target = *(long *) p;
 482             (*info->print_address_func) (info->target, info);
 483             p += 4;
 484             break;
 485           }
 486       case 8:                   /* Autoincrement */
 487         if (regnum == PC_REGNUM)
 488           {
 489             (*info->fprintf_func) (info->stream, "#");
 490             switch (d[1])
 491               {
 492               case 'b':
 493                 (*info->fprintf_func) (info->stream, "%d", *p++);
 494                 break;
 495
 496               case 'w':
 497                 (*info->fprintf_func) (info->stream, "%d", *(short *) p);
 498                 p += 2;
 499                 break;
 500
 501               case 'l':
 502                 (*info->fprintf_func) (info->stream, "%d", *(long *) p);
 503                 p += 4;
 504                 break;
 505
 506               case 'q':
 507                 (*info->fprintf_func) (info->stream, "0x%x%08x",
 508                                        ((long *) p)[1], ((long *) p)[0]);
 509                 p += 8;
 510                 break;
 511
 512               case 'o':
 513                 (*info->fprintf_func) (info->stream, "0x%x%08x%08x%08x",
 514                                        ((long *) p)[3], ((long *) p)[2],
 515                                        ((long *) p)[1], ((long *) p)[0]);
 516                 p += 16;
 517                 break;
 518
 519               case 'f':
 520                 if (INVALID_FLOAT (p, 4))
 521                   (*info->fprintf_func) (info->stream,
 522                                          "<<invalid float 0x%x>>",
 523                                          *(int *) p);
 524                 else
 525                   (*info->fprintf_func) (info->stream, "%f", *(float *) p);
 526                 p += 4;
 527                 break;
 528
 529               case 'd':
 530                 if (INVALID_FLOAT (p, 8))
 531                   (*info->fprintf_func) (info->stream,
 532                                          "<<invalid float 0x%x%08x>>",
 533                                          ((long *) p)[1], ((long *) p)[0]);
 534                 else
 535                   (*info->fprintf_func) (info->stream, "%f", *(double *) p);
 536                 p += 8;
 537                 break;
 538
 539               case 'g':
 540                 (*info->fprintf_func) (info->stream, "g-float");
 541                 p += 8;
 542                 break;
 543
 544               case 'h':
 545                 (*info->fprintf_func) (info->stream, "h-float");
 546                 p += 16;
 547                 break;
 548
 549               }
 550           }
 551         else
 552           (*info->fprintf_func) (info->stream, "(%s)+", REGISTER_NAME (regnum));
 553         break;
 554
 555       case 11:                  /* Byte displacement deferred */
 556         (*info->fprintf_func) (info->stream, "@");
 557       case 10:                  /* Byte displacement */
 558         if (regnum == PC_REGNUM)
 559           {
 560             info->target = addr + *p + 2;
 561             (*info->print_address_func) (info->target, info);
 562           }
 563         else
 564           (*info->fprintf_func) (info->stream, "%d(%s)", *p, REGISTER_NAME (regnum));
 565         p += 1;
 566         break;
 567
 568       case 13:                  /* Word displacement deferred */
 569         (*info->fprintf_func) (info->stream, "@");
 570       case 12:                  /* Word displacement */
 571         if (regnum == PC_REGNUM)
 572           {
 573             info->target = addr + *(short *) p + 3;
 574             (*info->print_address_func) (info->target, info);
 575           }
 576         else
 577           (*info->fprintf_func) (info->stream, "%d(%s)",
 578                                  *(short *) p, REGISTER_NAME (regnum));
 579         p += 2;
 580         break;
 581
 582       case 15:                  /* Long displacement deferred */
 583         (*info->fprintf_func) (info->stream, "@");
 584       case 14:                  /* Long displacement */
 585         if (regnum == PC_REGNUM)
 586           {
 587             info->target = addr + *(short *) p + 5;
 588             (*info->print_address_func) (info->target, info);
 589           }
 590         else
 591           (*info->fprintf_func) (info->stream, "%d(%s)",
 592                                  *(long *) p, REGISTER_NAME (regnum));
 593         p += 4;
 594       }
 595
 596   return (unsigned char *) p;
 597 }
 598 \f
 599 /* Initialize the current architecture based on INFO.  If possible, re-use an
 600    architecture from ARCHES, which is a list of architectures already created
 601    during this debugging session.
 602
 603    Called e.g. at program startup, when reading a core file, and when reading
 604    a binary file.  */
 605
 606 static struct gdbarch *
 607 vax_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 608 {
 609   struct gdbarch *gdbarch;
 610
 611   /* If there is already a candidate, use it.  */
 612   arches = gdbarch_list_lookup_by_info (arches, &info);
 613   if (arches != NULL)
 614     return arches->gdbarch;
 615
 616   gdbarch = gdbarch_alloc (&info, NULL);
 617
 618   /* NOTE: cagney/2002-12-06: This can be deleted when this arch is
 619      ready to unwind the PC first (see frame.c:get_prev_frame()).  */
 620   set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
 621
 622   /* Register info */
 623   set_gdbarch_num_regs (gdbarch, VAX_NUM_REGS);
 624   set_gdbarch_sp_regnum (gdbarch, VAX_SP_REGNUM);
 625   set_gdbarch_deprecated_fp_regnum (gdbarch, VAX_FP_REGNUM);
 626   set_gdbarch_pc_regnum (gdbarch, VAX_PC_REGNUM);
 627   set_gdbarch_ps_regnum (gdbarch, VAX_PS_REGNUM);
 628
 629   set_gdbarch_register_name (gdbarch, vax_register_name);
 630   set_gdbarch_register_size (gdbarch, VAX_REGISTER_SIZE);
 631   set_gdbarch_register_bytes (gdbarch, VAX_REGISTER_BYTES);
 632   set_gdbarch_register_byte (gdbarch, vax_register_byte);
 633   set_gdbarch_register_raw_size (gdbarch, vax_register_raw_size);
 634   set_gdbarch_deprecated_max_register_raw_size (gdbarch, VAX_MAX_REGISTER_RAW_SIZE);
 635   set_gdbarch_register_virtual_size (gdbarch, vax_register_virtual_size);
 636   set_gdbarch_deprecated_max_register_virtual_size (gdbarch,
 637                                          VAX_MAX_REGISTER_VIRTUAL_SIZE);
 638   set_gdbarch_register_virtual_type (gdbarch, vax_register_virtual_type);
 639
 640   /* Frame and stack info */
 641   set_gdbarch_skip_prologue (gdbarch, vax_skip_prologue);
 642   set_gdbarch_deprecated_saved_pc_after_call (gdbarch, vax_saved_pc_after_call);
 643
 644   set_gdbarch_frame_num_args (gdbarch, vax_frame_num_args);
 645   set_gdbarch_frameless_function_invocation (gdbarch,
 646                                    generic_frameless_function_invocation_not);
 647
 648   set_gdbarch_deprecated_frame_chain (gdbarch, vax_frame_chain);
 649   set_gdbarch_deprecated_frame_saved_pc (gdbarch, vax_frame_saved_pc);
 650
 651   set_gdbarch_frame_args_address (gdbarch, vax_frame_args_address);
 652   set_gdbarch_frame_locals_address (gdbarch, vax_frame_locals_address);
 653
 654   set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, vax_frame_init_saved_regs);
 655
 656   set_gdbarch_frame_args_skip (gdbarch, 4);
 657
 658   set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
 659
 660   /* Return value info */
 661   set_gdbarch_deprecated_store_struct_return (gdbarch, vax_store_struct_return);
 662   set_gdbarch_deprecated_extract_return_value (gdbarch, vax_extract_return_value);
 663   set_gdbarch_deprecated_store_return_value (gdbarch, vax_store_return_value);
 664   set_gdbarch_deprecated_extract_struct_value_address (gdbarch, vax_extract_struct_value_address);
 665
 666   /* Call dummy info */
 667   set_gdbarch_deprecated_push_dummy_frame (gdbarch, vax_push_dummy_frame);
 668   set_gdbarch_deprecated_pop_frame (gdbarch, vax_pop_frame);
 669   set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
 670   set_gdbarch_call_dummy_words (gdbarch, vax_call_dummy_words);
 671   set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof_vax_call_dummy_words);
 672   set_gdbarch_fix_call_dummy (gdbarch, vax_fix_call_dummy);
 673   set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 7);
 674   set_gdbarch_deprecated_use_generic_dummy_frames (gdbarch, 0);
 675   set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_on_stack);
 676
 677   /* Breakpoint info */
 678   set_gdbarch_breakpoint_from_pc (gdbarch, vax_breakpoint_from_pc);
 679   set_gdbarch_decr_pc_after_break (gdbarch, 0);
 680
 681   /* Misc info */
 682   set_gdbarch_function_start_offset (gdbarch, 2);
 683   set_gdbarch_believe_pcc_promotion (gdbarch, 1);
 684
 685   /* Should be using push_dummy_call.  */
 686   set_gdbarch_deprecated_dummy_write_sp (gdbarch, generic_target_write_sp);
 687
 688   /* Hook in ABI-specific overrides, if they have been registered.  */
 689   gdbarch_init_osabi (info, gdbarch);
 690
 691   return (gdbarch);
 692 }
 693
 694 void
 695 _initialize_vax_tdep (void)
 696 {
 697   gdbarch_register (bfd_arch_vax, vax_gdbarch_init, NULL);
 698
 699   deprecated_tm_print_insn = vax_print_insn;
 700 }