gdb/i386aix-nat.c

   1 // OBSOLETE /* Intel 386 native support.
   2 // OBSOLETE    Copyright 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999,
   3 // OBSOLETE    2000, 2001 Free Software Foundation, Inc.
   4 // OBSOLETE
   5 // OBSOLETE    This file is part of GDB.
   6 // OBSOLETE
   7 // OBSOLETE    This program is free software; you can redistribute it and/or modify
   8 // OBSOLETE    it under the terms of the GNU General Public License as published by
   9 // OBSOLETE    the Free Software Foundation; either version 2 of the License, or
  10 // OBSOLETE    (at your option) any later version.
  11 // OBSOLETE
  12 // OBSOLETE    This program is distributed in the hope that it will be useful,
  13 // OBSOLETE    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // OBSOLETE    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // OBSOLETE    GNU General Public License for more details.
  16 // OBSOLETE
  17 // OBSOLETE    You should have received a copy of the GNU General Public License
  18 // OBSOLETE    along with this program; if not, write to the Free Software
  19 // OBSOLETE    Foundation, Inc., 59 Temple Place - Suite 330,
  20 // OBSOLETE    Boston, MA 02111-1307, USA.  */
  21 // OBSOLETE
  22 // OBSOLETE #include "defs.h"
  23 // OBSOLETE #include "frame.h"
  24 // OBSOLETE #include "inferior.h"
  25 // OBSOLETE #include "language.h"
  26 // OBSOLETE #include "gdbcore.h"
  27 // OBSOLETE #include "regcache.h"
  28 // OBSOLETE
  29 // OBSOLETE #ifdef USG
  30 // OBSOLETE #include <sys/types.h>
  31 // OBSOLETE #endif
  32 // OBSOLETE
  33 // OBSOLETE #include <sys/param.h>
  34 // OBSOLETE #include <sys/dir.h>
  35 // OBSOLETE #include <signal.h>
  36 // OBSOLETE #include <sys/user.h>
  37 // OBSOLETE #include <sys/ioctl.h>
  38 // OBSOLETE #include <fcntl.h>
  39 // OBSOLETE
  40 // OBSOLETE #include <sys/file.h>
  41 // OBSOLETE #include "gdb_stat.h"
  42 // OBSOLETE
  43 // OBSOLETE #include <stddef.h>
  44 // OBSOLETE #include <sys/ptrace.h>
  45 // OBSOLETE
  46 // OBSOLETE /* Does AIX define this in <errno.h>?  */
  47 // OBSOLETE extern int errno;
  48 // OBSOLETE
  49 // OBSOLETE #ifdef HAVE_SYS_REG_H
  50 // OBSOLETE #include <sys/reg.h>
  51 // OBSOLETE #endif
  52 // OBSOLETE
  53 // OBSOLETE #include "floatformat.h"
  54 // OBSOLETE
  55 // OBSOLETE #include "target.h"
  56 // OBSOLETE
  57 // OBSOLETE static void fetch_core_registers (char *, unsigned, int, CORE_ADDR);
  58 // OBSOLETE \f
  59 // OBSOLETE
  60 // OBSOLETE /* this table must line up with REGISTER_NAMES in tm-i386v.h */
  61 // OBSOLETE /* symbols like 'EAX' come from <sys/reg.h> */
  62 // OBSOLETE static int regmap[] =
  63 // OBSOLETE {
  64 // OBSOLETE   EAX, ECX, EDX, EBX,
  65 // OBSOLETE   USP, EBP, ESI, EDI,
  66 // OBSOLETE   EIP, EFL, CS, SS,
  67 // OBSOLETE   DS, ES, FS, GS,
  68 // OBSOLETE };
  69 // OBSOLETE
  70 // OBSOLETE /* blockend is the value of u.u_ar0, and points to the
  71 // OBSOLETE  * place where GS is stored
  72 // OBSOLETE  */
  73 // OBSOLETE
  74 // OBSOLETE int
  75 // OBSOLETE i386_register_u_addr (int blockend, int regnum)
  76 // OBSOLETE {
  77 // OBSOLETE #if 0
  78 // OBSOLETE   /* this will be needed if fp registers are reinstated */
  79 // OBSOLETE   /* for now, you can look at them with 'info float'
  80 // OBSOLETE    * sys5 wont let you change them with ptrace anyway
  81 // OBSOLETE    */
  82 // OBSOLETE   if (regnum >= FP0_REGNUM && regnum <= FP7_REGNUM)
  83 // OBSOLETE     {
  84 // OBSOLETE       int ubase, fpstate;
  85 // OBSOLETE       struct user u;
  86 // OBSOLETE       ubase = blockend + 4 * (SS + 1) - KSTKSZ;
  87 // OBSOLETE       fpstate = ubase + ((char *) &u.u_fpstate - (char *) &u);
  88 // OBSOLETE       return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM));
  89 // OBSOLETE     }
  90 // OBSOLETE   else
  91 // OBSOLETE #endif
  92 // OBSOLETE     return (blockend + 4 * regmap[regnum]);
  93 // OBSOLETE
  94 // OBSOLETE }
  95 // OBSOLETE
  96 // OBSOLETE /* The code below only work on the aix ps/2 (i386-ibm-aix) -
  97 // OBSOLETE  * mtranle@paris - Sat Apr 11 10:34:12 1992
  98 // OBSOLETE  */
  99 // OBSOLETE
 100 // OBSOLETE struct env387
 101 // OBSOLETE {
 102 // OBSOLETE   unsigned short control;
 103 // OBSOLETE   unsigned short r0;
 104 // OBSOLETE   unsigned short status;
 105 // OBSOLETE   unsigned short r1;
 106 // OBSOLETE   unsigned short tag;
 107 // OBSOLETE   unsigned short r2;
 108 // OBSOLETE   unsigned long eip;
 109 // OBSOLETE   unsigned short code_seg;
 110 // OBSOLETE   unsigned short opcode;
 111 // OBSOLETE   unsigned long operand;
 112 // OBSOLETE   unsigned short operand_seg;
 113 // OBSOLETE   unsigned short r3;
 114 // OBSOLETE   unsigned char regs[8][10];
 115 // OBSOLETE };
 116 // OBSOLETE
 117 // OBSOLETE static
 118 // OBSOLETE print_387_status (unsigned short status, struct env387 *ep)
 119 // OBSOLETE {
 120 // OBSOLETE   int i;
 121 // OBSOLETE   int bothstatus;
 122 // OBSOLETE   int top;
 123 // OBSOLETE   int fpreg;
 124 // OBSOLETE   unsigned char *p;
 125 // OBSOLETE
 126 // OBSOLETE   bothstatus = ((status != 0) && (ep->status != 0));
 127 // OBSOLETE   if (status != 0)
 128 // OBSOLETE     {
 129 // OBSOLETE       if (bothstatus)
 130 // OBSOLETE     printf_unfiltered ("u: ");
 131 // OBSOLETE       print_387_status_word (status);
 132 // OBSOLETE     }
 133 // OBSOLETE
 134 // OBSOLETE   if (ep->status != 0)
 135 // OBSOLETE     {
 136 // OBSOLETE       if (bothstatus)
 137 // OBSOLETE     printf_unfiltered ("e: ");
 138 // OBSOLETE       print_387_status_word (ep->status);
 139 // OBSOLETE     }
 140 // OBSOLETE
 141 // OBSOLETE   print_387_control_word (ep->control);
 142 // OBSOLETE   printf_unfiltered ("last exception: ");
 143 // OBSOLETE   printf_unfiltered ("opcode %s; ", local_hex_string (ep->opcode));
 144 // OBSOLETE   printf_unfiltered ("pc %s:", local_hex_string (ep->code_seg));
 145 // OBSOLETE   printf_unfiltered ("%s; ", local_hex_string (ep->eip));
 146 // OBSOLETE   printf_unfiltered ("operand %s", local_hex_string (ep->operand_seg));
 147 // OBSOLETE   printf_unfiltered (":%s\n", local_hex_string (ep->operand));
 148 // OBSOLETE
 149 // OBSOLETE   top = ((ep->status >> 11) & 7);
 150 // OBSOLETE
 151 // OBSOLETE   printf_unfiltered ("regno  tag  msb              lsb  value\n");
 152 // OBSOLETE   for (fpreg = 7; fpreg >= 0; fpreg--)
 153 // OBSOLETE     {
 154 // OBSOLETE       double val;
 155 // OBSOLETE
 156 // OBSOLETE       printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : "  ", fpreg);
 157 // OBSOLETE
 158 // OBSOLETE       switch ((ep->tag >> ((7 - fpreg) * 2)) & 3)
 159 // OBSOLETE     {
 160 // OBSOLETE     case 0:
 161 // OBSOLETE       printf_unfiltered ("valid ");
 162 // OBSOLETE       break;
 163 // OBSOLETE     case 1:
 164 // OBSOLETE       printf_unfiltered ("zero  ");
 165 // OBSOLETE       break;
 166 // OBSOLETE     case 2:
 167 // OBSOLETE       printf_unfiltered ("trap  ");
 168 // OBSOLETE       break;
 169 // OBSOLETE     case 3:
 170 // OBSOLETE       printf_unfiltered ("empty ");
 171 // OBSOLETE       break;
 172 // OBSOLETE     }
 173 // OBSOLETE       for (i = 9; i >= 0; i--)
 174 // OBSOLETE     printf_unfiltered ("%02x", ep->regs[fpreg][i]);
 175 // OBSOLETE
 176 // OBSOLETE       i387_to_double ((char *) ep->regs[fpreg], (char *) &val);
 177 // OBSOLETE       printf_unfiltered ("  %#g\n", val);
 178 // OBSOLETE     }
 179 // OBSOLETE }
 180 // OBSOLETE
 181 // OBSOLETE static struct env387 core_env387;
 182 // OBSOLETE
 183 // OBSOLETE void
 184 // OBSOLETE i386_float_info (void)
 185 // OBSOLETE {
 186 // OBSOLETE   struct env387 fps;
 187 // OBSOLETE   int fpsaved = 0;
 188 // OBSOLETE   /* We need to reverse the order of the registers.  Apparently AIX stores
 189 // OBSOLETE      the highest-numbered ones first.  */
 190 // OBSOLETE   struct env387 fps_fixed;
 191 // OBSOLETE   int i;
 192 // OBSOLETE
 193 // OBSOLETE   if (! ptid_equal (inferior_ptid, null_ptid))
 194 // OBSOLETE     {
 195 // OBSOLETE       char buf[10];
 196 // OBSOLETE       unsigned short status;
 197 // OBSOLETE
 198 // OBSOLETE       ptrace (PT_READ_FPR, PIDGET (inferior_ptid), buf,
 199 // OBSOLETE               offsetof (struct env387, status));
 200 // OBSOLETE       memcpy (&status, buf, sizeof (status));
 201 // OBSOLETE       fpsaved = status;
 202 // OBSOLETE     }
 203 // OBSOLETE   else
 204 // OBSOLETE     {
 205 // OBSOLETE       if ((fpsaved = core_env387.status) != 0)
 206 // OBSOLETE     memcpy (&fps, &core_env387, sizeof (fps));
 207 // OBSOLETE     }
 208 // OBSOLETE
 209 // OBSOLETE   if (fpsaved == 0)
 210 // OBSOLETE     {
 211 // OBSOLETE       printf_unfiltered ("no floating point status saved\n");
 212 // OBSOLETE       return;
 213 // OBSOLETE     }
 214 // OBSOLETE
 215 // OBSOLETE   if (! ptid_equal (inferior_ptid, null_ptid))
 216 // OBSOLETE     {
 217 // OBSOLETE       int offset;
 218 // OBSOLETE       for (offset = 0; offset < sizeof (fps); offset += 10)
 219 // OBSOLETE     {
 220 // OBSOLETE       char buf[10];
 221 // OBSOLETE       ptrace (PT_READ_FPR, PIDGET (inferior_ptid), buf, offset);
 222 // OBSOLETE       memcpy ((char *) &fps.control + offset, buf,
 223 // OBSOLETE               MIN (10, sizeof (fps) - offset));
 224 // OBSOLETE     }
 225 // OBSOLETE     }
 226 // OBSOLETE   fps_fixed = fps;
 227 // OBSOLETE   for (i = 0; i < 8; ++i)
 228 // OBSOLETE     memcpy (fps_fixed.regs[i], fps.regs[7 - i], 10);
 229 // OBSOLETE   print_387_status (0, &fps_fixed);
 230 // OBSOLETE }
 231 // OBSOLETE
 232 // OBSOLETE /* Fetch one register.  */
 233 // OBSOLETE static void
 234 // OBSOLETE fetch_register (int regno)
 235 // OBSOLETE {
 236 // OBSOLETE   char buf[MAX_REGISTER_RAW_SIZE];
 237 // OBSOLETE   if (regno < FP0_REGNUM)
 238 // OBSOLETE     *(int *) buf = ptrace (PT_READ_GPR, PIDGET (inferior_ptid),
 239 // OBSOLETE                        PT_REG (regmap[regno]), 0, 0);
 240 // OBSOLETE   else
 241 // OBSOLETE     ptrace (PT_READ_FPR, PIDGET (inferior_ptid), buf,
 242 // OBSOLETE         (regno - FP0_REGNUM) * 10 + offsetof (struct env387, regs));
 243 // OBSOLETE   supply_register (regno, buf);
 244 // OBSOLETE }
 245 // OBSOLETE
 246 // OBSOLETE void
 247 // OBSOLETE fetch_inferior_registers (int regno)
 248 // OBSOLETE {
 249 // OBSOLETE   if (regno < 0)
 250 // OBSOLETE     for (regno = 0; regno < NUM_REGS; regno++)
 251 // OBSOLETE       fetch_register (regno);
 252 // OBSOLETE   else
 253 // OBSOLETE     fetch_register (regno);
 254 // OBSOLETE }
 255 // OBSOLETE
 256 // OBSOLETE /* store one register */
 257 // OBSOLETE static void
 258 // OBSOLETE store_register (int regno)
 259 // OBSOLETE {
 260 // OBSOLETE   char buf[80];
 261 // OBSOLETE   errno = 0;
 262 // OBSOLETE   if (regno < FP0_REGNUM)
 263 // OBSOLETE     ptrace (PT_WRITE_GPR, PIDGET (inferior_ptid), PT_REG (regmap[regno]),
 264 // OBSOLETE         *(int *) &registers[REGISTER_BYTE (regno)], 0);
 265 // OBSOLETE   else
 266 // OBSOLETE     ptrace (PT_WRITE_FPR, PIDGET (inferior_ptid),
 267 // OBSOLETE             &registers[REGISTER_BYTE (regno)],
 268 // OBSOLETE         (regno - FP0_REGNUM) * 10 + offsetof (struct env387, regs));
 269 // OBSOLETE
 270 // OBSOLETE   if (errno != 0)
 271 // OBSOLETE     {
 272 // OBSOLETE       sprintf (buf, "writing register number %d", regno);
 273 // OBSOLETE       perror_with_name (buf);
 274 // OBSOLETE     }
 275 // OBSOLETE }
 276 // OBSOLETE
 277 // OBSOLETE /* Store our register values back into the inferior.
 278 // OBSOLETE    If REGNO is -1, do this for all registers.
 279 // OBSOLETE    Otherwise, REGNO specifies which register (so we can save time).  */
 280 // OBSOLETE void
 281 // OBSOLETE store_inferior_registers (int regno)
 282 // OBSOLETE {
 283 // OBSOLETE   if (regno < 0)
 284 // OBSOLETE     for (regno = 0; regno < NUM_REGS; regno++)
 285 // OBSOLETE       store_register (regno);
 286 // OBSOLETE   else
 287 // OBSOLETE     store_register (regno);
 288 // OBSOLETE }
 289 // OBSOLETE
 290 // OBSOLETE #ifndef CD_AX                       /* defined in sys/i386/coredump.h */
 291 // OBSOLETE #define CD_AX       0
 292 // OBSOLETE #define CD_BX       1
 293 // OBSOLETE #define CD_CX       2
 294 // OBSOLETE #define CD_DX       3
 295 // OBSOLETE #define CD_SI       4
 296 // OBSOLETE #define CD_DI       5
 297 // OBSOLETE #define CD_BP       6
 298 // OBSOLETE #define CD_SP       7
 299 // OBSOLETE #define CD_FL       8
 300 // OBSOLETE #define CD_IP       9
 301 // OBSOLETE #define CD_CS       10
 302 // OBSOLETE #define CD_DS       11
 303 // OBSOLETE #define CD_ES       12
 304 // OBSOLETE #define CD_FS       13
 305 // OBSOLETE #define CD_GS       14
 306 // OBSOLETE #define CD_SS       15
 307 // OBSOLETE #endif
 308 // OBSOLETE
 309 // OBSOLETE /*
 310 // OBSOLETE  * The order here in core_regmap[] has to be the same as in
 311 // OBSOLETE  * regmap[] above.
 312 // OBSOLETE  */
 313 // OBSOLETE static int core_regmap[] =
 314 // OBSOLETE {
 315 // OBSOLETE   CD_AX, CD_CX, CD_DX, CD_BX,
 316 // OBSOLETE   CD_SP, CD_BP, CD_SI, CD_DI,
 317 // OBSOLETE   CD_IP, CD_FL, CD_CS, CD_SS,
 318 // OBSOLETE   CD_DS, CD_ES, CD_FS, CD_GS,
 319 // OBSOLETE };
 320 // OBSOLETE
 321 // OBSOLETE /* Provide registers to GDB from a core file.
 322 // OBSOLETE
 323 // OBSOLETE    CORE_REG_SECT points to an array of bytes, which were obtained from
 324 // OBSOLETE    a core file which BFD thinks might contain register contents.
 325 // OBSOLETE    CORE_REG_SIZE is its size.
 326 // OBSOLETE
 327 // OBSOLETE    WHICH says which register set corelow suspects this is:
 328 // OBSOLETE      0 --- the general-purpose register set
 329 // OBSOLETE      2 --- the floating-point register set
 330 // OBSOLETE
 331 // OBSOLETE    REG_ADDR isn't used.  */
 332 // OBSOLETE
 333 // OBSOLETE static void
 334 // OBSOLETE fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
 335 // OBSOLETE                   int which, CORE_ADDR reg_addr)
 336 // OBSOLETE {
 337 // OBSOLETE
 338 // OBSOLETE   if (which == 0)
 339 // OBSOLETE     {
 340 // OBSOLETE       /* Integer registers */
 341 // OBSOLETE
 342 // OBSOLETE #define cd_regs(n) ((int *)core_reg_sect)[n]
 343 // OBSOLETE #define regs(n) *((int *) &registers[REGISTER_BYTE (n)])
 344 // OBSOLETE
 345 // OBSOLETE       int i;
 346 // OBSOLETE       for (i = 0; i < FP0_REGNUM; i++)
 347 // OBSOLETE     regs (i) = cd_regs (core_regmap[i]);
 348 // OBSOLETE     }
 349 // OBSOLETE   else if (which == 2)
 350 // OBSOLETE     {
 351 // OBSOLETE       /* Floating point registers */
 352 // OBSOLETE
 353 // OBSOLETE       if (core_reg_size >= sizeof (core_env387))
 354 // OBSOLETE     memcpy (&core_env387, core_reg_sect, core_reg_size);
 355 // OBSOLETE       else
 356 // OBSOLETE     fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n");
 357 // OBSOLETE     }
 358 // OBSOLETE }
 359 // OBSOLETE \f
 360 // OBSOLETE
 361 // OBSOLETE /* Register that we are able to handle i386aix core file formats.
 362 // OBSOLETE    FIXME: is this really bfd_target_unknown_flavour? */
 363 // OBSOLETE
 364 // OBSOLETE static struct core_fns i386aix_core_fns =
 365 // OBSOLETE {
 366 // OBSOLETE   bfd_target_unknown_flavour,               /* core_flavour */
 367 // OBSOLETE   default_check_format,                     /* check_format */
 368 // OBSOLETE   default_core_sniffer,                     /* core_sniffer */
 369 // OBSOLETE   fetch_core_registers,                     /* core_read_registers */
 370 // OBSOLETE   NULL                                      /* next */
 371 // OBSOLETE };
 372 // OBSOLETE
 373 // OBSOLETE void
 374 // OBSOLETE _initialize_core_i386aix (void)
 375 // OBSOLETE {
 376 // OBSOLETE   add_core_fns (&i386aix_core_fns);
 377 // OBSOLETE }