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_saved_pc_after_call_ftype vax_saved_pc_after_call;
  44 static gdbarch_frame_num_args_ftype vax_frame_num_args;
  45 static gdbarch_deprecated_frame_chain_ftype vax_frame_chain;
  46 static gdbarch_frame_args_address_ftype vax_frame_args_address;
  47 static gdbarch_frame_locals_address_ftype vax_frame_locals_address;
  48
  49 static gdbarch_store_struct_return_ftype vax_store_struct_return;
  50 static gdbarch_deprecated_extract_return_value_ftype vax_extract_return_value;
  51 static gdbarch_deprecated_extract_struct_value_address_ftype
  52     vax_extract_struct_value_address;
  53
  54 static gdbarch_deprecated_push_dummy_frame_ftype vax_push_dummy_frame;
  55 static gdbarch_fix_call_dummy_ftype vax_fix_call_dummy;
  56
  57 /* Return 1 if P points to an invalid floating point value.
  58    LEN is the length in bytes -- not relevant on the Vax.  */
  59
  60 /* FIXME: cagney/2002-01-19: The macro below was originally defined in
  61    tm-vax.h and used in values.c.  Two problems.  Firstly this is a
  62    very non-portable and secondly it is wrong.  The VAX should be
  63    using floatformat and associated methods to identify and handle
  64    invalid floating-point values.  Adding to the poor target's woes
  65    there is no floatformat_vax_{f,d} and no TARGET_FLOAT_FORMAT
  66    et.al..  */
  67
  68 /* FIXME: cagney/2002-01-19: It turns out that the only thing that
  69    uses this macro is the vax disassembler code (so how old is this
  70    target?).  This target should instead be using the opcodes
  71    disassembler.  That allowing the macro to be eliminated.  */
  72
  73 #define INVALID_FLOAT(p, len) ((*(short *) p & 0xff80) == 0x8000)
  74
  75 /* Vax instructions are never longer than this.  */
  76 #define MAXLEN 62
  77
  78 /* Number of elements in the opcode table.  */
  79 #define NOPCODES (sizeof votstrs / sizeof votstrs[0])
  80
  81 static unsigned char *print_insn_arg ();
  82 \f
  83 static const char *
  84 vax_register_name (int regno)
  85 {
  86   static char *register_names[] =
  87   {
  88     "r0",  "r1",  "r2",  "r3", "r4", "r5", "r6", "r7",
  89     "r8",  "r9", "r10", "r11", "ap", "fp", "sp", "pc",
  90     "ps",
  91   };
  92
  93   if (regno < 0)
  94     return (NULL);
  95   if (regno >= (sizeof(register_names) / sizeof(*register_names)))
  96     return (NULL);
  97   return (register_names[regno]);
  98 }
  99
 100 static int
 101 vax_register_byte (int regno)
 102 {
 103   return (regno * 4);
 104 }
 105
 106 static int
 107 vax_register_raw_size (int regno)
 108 {
 109   return (4);
 110 }
 111
 112 static int
 113 vax_register_virtual_size (int regno)
 114 {
 115   return (4);
 116 }
 117
 118 static struct type *
 119 vax_register_virtual_type (int regno)
 120 {
 121   return (builtin_type_int);
 122 }
 123 \f
 124 static void
 125 vax_frame_init_saved_regs (struct frame_info *frame)
 126 {
 127   int regnum, regmask;
 128   CORE_ADDR next_addr;
 129
 130   if (get_frame_saved_regs (frame))
 131     return;
 132
 133   frame_saved_regs_zalloc (frame);
 134
 135   regmask = read_memory_integer (get_frame_base (frame) + 4, 4) >> 16;
 136
 137   next_addr = get_frame_base (frame) + 16;
 138
 139   /* regmask's low bit is for register 0, which is the first one
 140      what would be pushed.  */
 141   for (regnum = 0; regnum < VAX_AP_REGNUM; regnum++)
 142     {
 143       if (regmask & (1 << regnum))
 144         get_frame_saved_regs (frame)[regnum] = next_addr += 4;
 145     }
 146
 147   get_frame_saved_regs (frame)[SP_REGNUM] = next_addr + 4;
 148   if (regmask & (1 << FP_REGNUM))
 149     get_frame_saved_regs (frame)[SP_REGNUM] +=
 150       4 + (4 * read_memory_integer (next_addr + 4, 4));
 151
 152   get_frame_saved_regs (frame)[PC_REGNUM] = get_frame_base (frame) + 16;
 153   get_frame_saved_regs (frame)[FP_REGNUM] = get_frame_base (frame) + 12;
 154   get_frame_saved_regs (frame)[VAX_AP_REGNUM] = get_frame_base (frame) + 8;
 155   get_frame_saved_regs (frame)[PS_REGNUM] = get_frame_base (frame) + 4;
 156 }
 157
 158 /* Get saved user PC for sigtramp from sigcontext for BSD style sigtramp.  */
 159
 160 static CORE_ADDR
 161 vax_sigtramp_saved_pc (struct frame_info *frame)
 162 {
 163   CORE_ADDR sigcontext_addr;
 164   char *buf;
 165   int ptrbytes = TYPE_LENGTH (builtin_type_void_func_ptr);
 166   int sigcontext_offs = (2 * TARGET_INT_BIT) / TARGET_CHAR_BIT;
 167
 168   buf = alloca (ptrbytes);
 169   /* Get sigcontext address, it is the third parameter on the stack.  */
 170   if (get_next_frame (frame))
 171     sigcontext_addr = read_memory_typed_address
 172       (FRAME_ARGS_ADDRESS (get_next_frame (frame))
 173        + FRAME_ARGS_SKIP + sigcontext_offs,
 174        builtin_type_void_data_ptr);
 175   else
 176     sigcontext_addr = read_memory_typed_address
 177       (read_register (SP_REGNUM) + sigcontext_offs, builtin_type_void_data_ptr);
 178
 179   /* Don't cause a memory_error when accessing sigcontext in case the stack
 180      layout has changed or the stack is corrupt.  */
 181   target_read_memory (sigcontext_addr + SIGCONTEXT_PC_OFFSET, buf, ptrbytes);
 182   return extract_typed_address (buf, builtin_type_void_func_ptr);
 183 }
 184
 185 static CORE_ADDR
 186 vax_frame_saved_pc (struct frame_info *frame)
 187 {
 188   if ((get_frame_type (frame) == SIGTRAMP_FRAME))
 189     return (vax_sigtramp_saved_pc (frame)); /* XXXJRT */
 190
 191   return (read_memory_integer (get_frame_base (frame) + 16, 4));
 192 }
 193
 194 CORE_ADDR
 195 vax_frame_args_address_correct (struct frame_info *frame)
 196 {
 197   /* Cannot find the AP register value directly from the FP value.  Must
 198      find it saved in the frame called by this one, or in the AP register
 199      for the innermost frame.  However, there is no way to tell the
 200      difference between the innermost frame and a frame for which we
 201      just don't know the frame that it called (e.g. "info frame 0x7ffec789").
 202      For the sake of argument, suppose that the stack is somewhat trashed
 203      (which is one reason that "info frame" exists).  So, return 0 (indicating
 204      we don't know the address of the arglist) if we don't know what frame
 205      this frame calls.  */
 206   if (get_next_frame (frame))
 207     return (read_memory_integer (get_frame_base (get_next_frame (frame)) + 8, 4));
 208
 209   return (0);
 210 }
 211
 212 static CORE_ADDR
 213 vax_frame_args_address (struct frame_info *frame)
 214 {
 215   /* In most of GDB, getting the args address is too important to
 216      just say "I don't know".  This is sometimes wrong for functions
 217      that aren't on top of the stack, but c'est la vie.  */
 218   if (get_next_frame (frame))
 219     return (read_memory_integer (get_frame_base (get_next_frame (frame)) + 8, 4));
 220
 221   return (read_register (VAX_AP_REGNUM));
 222 }
 223
 224 static CORE_ADDR
 225 vax_frame_locals_address (struct frame_info *frame)
 226 {
 227   return (get_frame_base (frame));
 228 }
 229
 230 static int
 231 vax_frame_num_args (struct frame_info *fi)
 232 {
 233   return (0xff & read_memory_integer (FRAME_ARGS_ADDRESS (fi), 1));
 234 }
 235
 236 static CORE_ADDR
 237 vax_frame_chain (struct frame_info *frame)
 238 {
 239   /* In the case of the VAX, the frame's nominal address is the FP value,
 240      and 12 bytes later comes the saved previous FP value as a 4-byte word.  */
 241   if (inside_entry_file (get_frame_pc (frame)))
 242     return (0);
 243
 244   return (read_memory_integer (get_frame_base (frame) + 12, 4));
 245 }
 246 \f
 247 static void
 248 vax_push_dummy_frame (void)
 249 {
 250   CORE_ADDR sp = read_register (SP_REGNUM);
 251   int regnum;
 252
 253   sp = push_word (sp, 0);       /* arglist */
 254   for (regnum = 11; regnum >= 0; regnum--)
 255     sp = push_word (sp, read_register (regnum));
 256   sp = push_word (sp, read_register (PC_REGNUM));
 257   sp = push_word (sp, read_register (FP_REGNUM));
 258   sp = push_word (sp, read_register (VAX_AP_REGNUM));
 259   sp = push_word (sp, (read_register (PS_REGNUM) & 0xffef) + 0x2fff0000);
 260   sp = push_word (sp, 0);
 261   write_register (SP_REGNUM, sp);
 262   write_register (FP_REGNUM, sp);
 263   write_register (VAX_AP_REGNUM, sp + (17 * 4));
 264 }
 265
 266 static void
 267 vax_pop_frame (void)
 268 {
 269   CORE_ADDR fp = read_register (FP_REGNUM);
 270   int regnum;
 271   int regmask = read_memory_integer (fp + 4, 4);
 272
 273   write_register (PS_REGNUM,
 274                   (regmask & 0xffff)
 275                   | (read_register (PS_REGNUM) & 0xffff0000));
 276   write_register (PC_REGNUM, read_memory_integer (fp + 16, 4));
 277   write_register (FP_REGNUM, read_memory_integer (fp + 12, 4));
 278   write_register (VAX_AP_REGNUM, read_memory_integer (fp + 8, 4));
 279   fp += 16;
 280   for (regnum = 0; regnum < 12; regnum++)
 281     if (regmask & (0x10000 << regnum))
 282       write_register (regnum, read_memory_integer (fp += 4, 4));
 283   fp = fp + 4 + ((regmask >> 30) & 3);
 284   if (regmask & 0x20000000)
 285     {
 286       regnum = read_memory_integer (fp, 4);
 287       fp += (regnum + 1) * 4;
 288     }
 289   write_register (SP_REGNUM, fp);
 290   flush_cached_frames ();
 291 }
 292
 293 /* The VAX call dummy sequence:
 294
 295         calls #69, @#32323232
 296         bpt
 297
 298    It is 8 bytes long.  The address and argc are patched by
 299    vax_fix_call_dummy().  */
 300 static LONGEST vax_call_dummy_words[] = { 0x329f69fb, 0x03323232 };
 301 static int sizeof_vax_call_dummy_words = sizeof(vax_call_dummy_words);
 302
 303 static void
 304 vax_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs,
 305                     struct value **args, struct type *type, int gcc_p)
 306 {
 307   dummy[1] = nargs;
 308   store_unsigned_integer (dummy + 3, 4, fun);
 309 }
 310 \f
 311 static void
 312 vax_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
 313 {
 314   write_register (1, addr);
 315 }
 316
 317 static void
 318 vax_extract_return_value (struct type *valtype, char *regbuf, char *valbuf)
 319 {
 320   memcpy (valbuf, regbuf + REGISTER_BYTE (0), TYPE_LENGTH (valtype));
 321 }
 322
 323 static void
 324 vax_store_return_value (struct type *valtype, char *valbuf)
 325 {
 326   deprecated_write_register_bytes (0, valbuf, TYPE_LENGTH (valtype));
 327 }
 328
 329 static CORE_ADDR
 330 vax_extract_struct_value_address (char *regbuf)
 331 {
 332   return (extract_address (regbuf + REGISTER_BYTE (0), REGISTER_RAW_SIZE (0)));
 333 }
 334 \f
 335 static const unsigned char *
 336 vax_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
 337 {
 338   static const unsigned char vax_breakpoint[] = { 3 };
 339
 340   *lenptr = sizeof(vax_breakpoint);
 341   return (vax_breakpoint);
 342 }
 343 \f
 344 /* Advance PC across any function entry prologue instructions
 345    to reach some "real" code.  */
 346
 347 static CORE_ADDR
 348 vax_skip_prologue (CORE_ADDR pc)
 349 {
 350   register int op = (unsigned char) read_memory_integer (pc, 1);
 351   if (op == 0x11)
 352     pc += 2;                    /* skip brb */
 353   if (op == 0x31)
 354     pc += 3;                    /* skip brw */
 355   if (op == 0xC2
 356       && ((unsigned char) read_memory_integer (pc + 2, 1)) == 0x5E)
 357     pc += 3;                    /* skip subl2 */
 358   if (op == 0x9E
 359       && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xAE
 360       && ((unsigned char) read_memory_integer (pc + 3, 1)) == 0x5E)
 361     pc += 4;                    /* skip movab */
 362   if (op == 0x9E
 363       && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xCE
 364       && ((unsigned char) read_memory_integer (pc + 4, 1)) == 0x5E)
 365     pc += 5;                    /* skip movab */
 366   if (op == 0x9E
 367       && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xEE
 368       && ((unsigned char) read_memory_integer (pc + 6, 1)) == 0x5E)
 369     pc += 7;                    /* skip movab */
 370   return pc;
 371 }
 372
 373 static CORE_ADDR
 374 vax_saved_pc_after_call (struct frame_info *frame)
 375 {
 376   return (DEPRECATED_FRAME_SAVED_PC(frame));
 377 }
 378 \f
 379 /* Print the vax instruction at address MEMADDR in debugged memory,
 380    from disassembler info INFO.
 381    Returns length of the instruction, in bytes.  */
 382
 383 static int
 384 vax_print_insn (CORE_ADDR memaddr, disassemble_info *info)
 385 {
 386   unsigned char buffer[MAXLEN];
 387   register int i;
 388   register unsigned char *p;
 389   const char *d;
 390
 391   int status = (*info->read_memory_func) (memaddr, buffer, MAXLEN, info);
 392   if (status != 0)
 393     {
 394       (*info->memory_error_func) (status, memaddr, info);
 395       return -1;
 396     }
 397
 398   for (i = 0; i < NOPCODES; i++)
 399     if (votstrs[i].detail.code == buffer[0]
 400         || votstrs[i].detail.code == *(unsigned short *) buffer)
 401       break;
 402
 403   /* Handle undefined instructions.  */
 404   if (i == NOPCODES)
 405     {
 406       (*info->fprintf_func) (info->stream, "0%o", buffer[0]);
 407       return 1;
 408     }
 409
 410   (*info->fprintf_func) (info->stream, "%s", votstrs[i].name);
 411
 412   /* Point at first byte of argument data,
 413      and at descriptor for first argument.  */
 414   p = buffer + 1 + (votstrs[i].detail.code >= 0x100);
 415   d = votstrs[i].detail.args;
 416
 417   if (*d)
 418     (*info->fprintf_func) (info->stream, " ");
 419
 420   while (*d)
 421     {
 422       p = print_insn_arg (d, p, memaddr + (p - buffer), info);
 423       d += 2;
 424       if (*d)
 425         (*info->fprintf_func) (info->stream, ",");
 426     }
 427   return p - buffer;
 428 }
 429 \f
 430 static unsigned char *
 431 print_insn_arg (char *d, register char *p, CORE_ADDR addr,
 432                 disassemble_info *info)
 433 {
 434   register int regnum = *p & 0xf;
 435   float floatlitbuf;
 436
 437   if (*d == 'b')
 438     {
 439       if (d[1] == 'b')
 440         (*info->fprintf_func) (info->stream, "0x%x", addr + *p++ + 1);
 441       else
 442         {
 443           (*info->fprintf_func) (info->stream, "0x%x", addr + *(short *) p + 2);
 444           p += 2;
 445         }
 446     }
 447   else
 448     switch ((*p++ >> 4) & 0xf)
 449       {
 450       case 0:
 451       case 1:
 452       case 2:
 453       case 3:                   /* Literal mode */
 454         if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h')
 455           {
 456             *(int *) &floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4);
 457             (*info->fprintf_func) (info->stream, "$%f", floatlitbuf);
 458           }
 459         else
 460           (*info->fprintf_func) (info->stream, "$%d", p[-1] & 0x3f);
 461         break;
 462
 463       case 4:                   /* Indexed */
 464         p = (char *) print_insn_arg (d, p, addr + 1, info);
 465         (*info->fprintf_func) (info->stream, "[%s]", REGISTER_NAME (regnum));
 466         break;
 467
 468       case 5:                   /* Register */
 469         (*info->fprintf_func) (info->stream, REGISTER_NAME (regnum));
 470         break;
 471
 472       case 7:                   /* Autodecrement */
 473         (*info->fprintf_func) (info->stream, "-");
 474       case 6:                   /* Register deferred */
 475         (*info->fprintf_func) (info->stream, "(%s)", REGISTER_NAME (regnum));
 476         break;
 477
 478       case 9:                   /* Autoincrement deferred */
 479         (*info->fprintf_func) (info->stream, "@");
 480         if (regnum == PC_REGNUM)
 481           {
 482             (*info->fprintf_func) (info->stream, "#");
 483             info->target = *(long *) p;
 484             (*info->print_address_func) (info->target, info);
 485             p += 4;
 486             break;
 487           }
 488       case 8:                   /* Autoincrement */
 489         if (regnum == PC_REGNUM)
 490           {
 491             (*info->fprintf_func) (info->stream, "#");
 492             switch (d[1])
 493               {
 494               case 'b':
 495                 (*info->fprintf_func) (info->stream, "%d", *p++);
 496                 break;
 497
 498               case 'w':
 499                 (*info->fprintf_func) (info->stream, "%d", *(short *) p);
 500                 p += 2;
 501                 break;
 502
 503               case 'l':
 504                 (*info->fprintf_func) (info->stream, "%d", *(long *) p);
 505                 p += 4;
 506                 break;
 507
 508               case 'q':
 509                 (*info->fprintf_func) (info->stream, "0x%x%08x",
 510                                        ((long *) p)[1], ((long *) p)[0]);
 511                 p += 8;
 512                 break;
 513
 514               case 'o':
 515                 (*info->fprintf_func) (info->stream, "0x%x%08x%08x%08x",
 516                                        ((long *) p)[3], ((long *) p)[2],
 517                                        ((long *) p)[1], ((long *) p)[0]);
 518                 p += 16;
 519                 break;
 520
 521               case 'f':
 522                 if (INVALID_FLOAT (p, 4))
 523                   (*info->fprintf_func) (info->stream,
 524                                          "<<invalid float 0x%x>>",
 525                                          *(int *) p);
 526                 else
 527                   (*info->fprintf_func) (info->stream, "%f", *(float *) p);
 528                 p += 4;
 529                 break;
 530
 531               case 'd':
 532                 if (INVALID_FLOAT (p, 8))
 533                   (*info->fprintf_func) (info->stream,
 534                                          "<<invalid float 0x%x%08x>>",
 535                                          ((long *) p)[1], ((long *) p)[0]);
 536                 else
 537                   (*info->fprintf_func) (info->stream, "%f", *(double *) p);
 538                 p += 8;
 539                 break;
 540
 541               case 'g':
 542                 (*info->fprintf_func) (info->stream, "g-float");
 543                 p += 8;
 544                 break;
 545
 546               case 'h':
 547                 (*info->fprintf_func) (info->stream, "h-float");
 548                 p += 16;
 549                 break;
 550
 551               }
 552           }
 553         else
 554           (*info->fprintf_func) (info->stream, "(%s)+", REGISTER_NAME (regnum));
 555         break;
 556
 557       case 11:                  /* Byte displacement deferred */
 558         (*info->fprintf_func) (info->stream, "@");
 559       case 10:                  /* Byte displacement */
 560         if (regnum == PC_REGNUM)
 561           {
 562             info->target = addr + *p + 2;
 563             (*info->print_address_func) (info->target, info);
 564           }
 565         else
 566           (*info->fprintf_func) (info->stream, "%d(%s)", *p, REGISTER_NAME (regnum));
 567         p += 1;
 568         break;
 569
 570       case 13:                  /* Word displacement deferred */
 571         (*info->fprintf_func) (info->stream, "@");
 572       case 12:                  /* Word displacement */
 573         if (regnum == PC_REGNUM)
 574           {
 575             info->target = addr + *(short *) p + 3;
 576             (*info->print_address_func) (info->target, info);
 577           }
 578         else
 579           (*info->fprintf_func) (info->stream, "%d(%s)",
 580                                  *(short *) p, REGISTER_NAME (regnum));
 581         p += 2;
 582         break;
 583
 584       case 15:                  /* Long displacement deferred */
 585         (*info->fprintf_func) (info->stream, "@");
 586       case 14:                  /* Long displacement */
 587         if (regnum == PC_REGNUM)
 588           {
 589             info->target = addr + *(short *) p + 5;
 590             (*info->print_address_func) (info->target, info);
 591           }
 592         else
 593           (*info->fprintf_func) (info->stream, "%d(%s)",
 594                                  *(long *) p, REGISTER_NAME (regnum));
 595         p += 4;
 596       }
 597
 598   return (unsigned char *) p;
 599 }
 600 \f
 601 /* Initialize the current architecture based on INFO.  If possible, re-use an
 602    architecture from ARCHES, which is a list of architectures already created
 603    during this debugging session.
 604
 605    Called e.g. at program startup, when reading a core file, and when reading
 606    a binary file.  */
 607
 608 static struct gdbarch *
 609 vax_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 610 {
 611   struct gdbarch *gdbarch;
 612
 613   /* If there is already a candidate, use it.  */
 614   arches = gdbarch_list_lookup_by_info (arches, &info);
 615   if (arches != NULL)
 616     return arches->gdbarch;
 617
 618   gdbarch = gdbarch_alloc (&info, NULL);
 619
 620   /* NOTE: cagney/2002-12-06: This can be deleted when this arch is
 621      ready to unwind the PC first (see frame.c:get_prev_frame()).  */
 622   set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
 623
 624   /* Register info */
 625   set_gdbarch_num_regs (gdbarch, VAX_NUM_REGS);
 626   set_gdbarch_sp_regnum (gdbarch, VAX_SP_REGNUM);
 627   set_gdbarch_fp_regnum (gdbarch, VAX_FP_REGNUM);
 628   set_gdbarch_pc_regnum (gdbarch, VAX_PC_REGNUM);
 629   set_gdbarch_ps_regnum (gdbarch, VAX_PS_REGNUM);
 630
 631   set_gdbarch_register_name (gdbarch, vax_register_name);
 632   set_gdbarch_register_size (gdbarch, VAX_REGISTER_SIZE);
 633   set_gdbarch_register_bytes (gdbarch, VAX_REGISTER_BYTES);
 634   set_gdbarch_register_byte (gdbarch, vax_register_byte);
 635   set_gdbarch_register_raw_size (gdbarch, vax_register_raw_size);
 636   set_gdbarch_deprecated_max_register_raw_size (gdbarch, VAX_MAX_REGISTER_RAW_SIZE);
 637   set_gdbarch_register_virtual_size (gdbarch, vax_register_virtual_size);
 638   set_gdbarch_deprecated_max_register_virtual_size (gdbarch,
 639                                          VAX_MAX_REGISTER_VIRTUAL_SIZE);
 640   set_gdbarch_register_virtual_type (gdbarch, vax_register_virtual_type);
 641
 642   /* Frame and stack info */
 643   set_gdbarch_skip_prologue (gdbarch, vax_skip_prologue);
 644   set_gdbarch_saved_pc_after_call (gdbarch, vax_saved_pc_after_call);
 645
 646   set_gdbarch_frame_num_args (gdbarch, vax_frame_num_args);
 647   set_gdbarch_frameless_function_invocation (gdbarch,
 648                                    generic_frameless_function_invocation_not);
 649
 650   set_gdbarch_deprecated_frame_chain (gdbarch, vax_frame_chain);
 651   set_gdbarch_deprecated_frame_saved_pc (gdbarch, vax_frame_saved_pc);
 652
 653   set_gdbarch_frame_args_address (gdbarch, vax_frame_args_address);
 654   set_gdbarch_frame_locals_address (gdbarch, vax_frame_locals_address);
 655
 656   set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, vax_frame_init_saved_regs);
 657
 658   set_gdbarch_frame_args_skip (gdbarch, 4);
 659
 660   set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
 661
 662   /* Return value info */
 663   set_gdbarch_store_struct_return (gdbarch, vax_store_struct_return);
 664   set_gdbarch_deprecated_extract_return_value (gdbarch, vax_extract_return_value);
 665   set_gdbarch_deprecated_store_return_value (gdbarch, vax_store_return_value);
 666   set_gdbarch_deprecated_extract_struct_value_address (gdbarch, vax_extract_struct_value_address);
 667
 668   /* Call dummy info */
 669   set_gdbarch_deprecated_push_dummy_frame (gdbarch, vax_push_dummy_frame);
 670   set_gdbarch_deprecated_pop_frame (gdbarch, vax_pop_frame);
 671   set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
 672   set_gdbarch_call_dummy_p (gdbarch, 1);
 673   set_gdbarch_call_dummy_words (gdbarch, vax_call_dummy_words);
 674   set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof_vax_call_dummy_words);
 675   set_gdbarch_fix_call_dummy (gdbarch, vax_fix_call_dummy);
 676   set_gdbarch_call_dummy_start_offset (gdbarch, 0);
 677   set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
 678   set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 7);
 679   set_gdbarch_deprecated_use_generic_dummy_frames (gdbarch, 0);
 680   set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_on_stack);
 681
 682   /* Breakpoint info */
 683   set_gdbarch_breakpoint_from_pc (gdbarch, vax_breakpoint_from_pc);
 684   set_gdbarch_decr_pc_after_break (gdbarch, 0);
 685
 686   /* Misc info */
 687   set_gdbarch_function_start_offset (gdbarch, 2);
 688   set_gdbarch_believe_pcc_promotion (gdbarch, 1);
 689
 690   /* Hook in ABI-specific overrides, if they have been registered.  */
 691   gdbarch_init_osabi (info, gdbarch);
 692
 693   return (gdbarch);
 694 }
 695
 696 void
 697 _initialize_vax_tdep (void)
 698 {
 699   gdbarch_register (bfd_arch_vax, vax_gdbarch_init, NULL);
 700
 701   tm_print_insn = vax_print_insn;
 702 }