gdb/m88k-nat.c

   1 // OBSOLETE /* Native-dependent Motorola 88xxx support for GDB, the GNU Debugger.
   2 // OBSOLETE    Copyright 1988, 1990, 1991, 1992, 1993, 1995, 1999, 2000, 2001
   3 // OBSOLETE    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 "regcache.h"
  26 // OBSOLETE
  27 // OBSOLETE #include <sys/types.h>
  28 // OBSOLETE #include <sys/param.h>
  29 // OBSOLETE #include <sys/dir.h>
  30 // OBSOLETE #include <signal.h>
  31 // OBSOLETE #include "gdbcore.h"
  32 // OBSOLETE #include <sys/user.h>
  33 // OBSOLETE
  34 // OBSOLETE #ifndef USER                        /* added to support BCS ptrace_user */
  35 // OBSOLETE #define USER ptrace_user
  36 // OBSOLETE #endif
  37 // OBSOLETE #include <sys/ioctl.h>
  38 // OBSOLETE #include <fcntl.h>
  39 // OBSOLETE #include <sys/file.h>
  40 // OBSOLETE #include "gdb_stat.h"
  41 // OBSOLETE
  42 // OBSOLETE #include "symtab.h"
  43 // OBSOLETE #include "setjmp.h"
  44 // OBSOLETE #include "value.h"
  45 // OBSOLETE
  46 // OBSOLETE #ifdef DELTA88
  47 // OBSOLETE #include <sys/ptrace.h>
  48 // OBSOLETE
  49 // OBSOLETE /* define offsets to the pc instruction offsets in ptrace_user struct */
  50 // OBSOLETE #define SXIP_OFFSET ((char *)&u.pt_sigframe.sig_sxip - (char *)&u)
  51 // OBSOLETE #define SNIP_OFFSET ((char *)&u.pt_sigframe.sig_snip - (char *)&u)
  52 // OBSOLETE #define SFIP_OFFSET ((char *)&u.pt_sigframe.sig_sfip - (char *)&u)
  53 // OBSOLETE #else
  54 // OBSOLETE /* define offsets to the pc instruction offsets in ptrace_user struct */
  55 // OBSOLETE #define SXIP_OFFSET ((char *)&u.pt_sigframe.dg_sigframe.sc_sxip - (char *)&u)
  56 // OBSOLETE #define SNIP_OFFSET ((char *)&u.pt_sigframe.dg_sigframe.sc_snip - (char *)&u)
  57 // OBSOLETE #define SFIP_OFFSET ((char *)&u.pt_sigframe.dg_sigframe.sc_sfip - (char *)&u)
  58 // OBSOLETE #endif
  59 // OBSOLETE
  60 // OBSOLETE extern int have_symbol_file_p ();
  61 // OBSOLETE
  62 // OBSOLETE extern jmp_buf stack_jmp;
  63 // OBSOLETE
  64 // OBSOLETE extern int errno;
  65 // OBSOLETE
  66 // OBSOLETE void
  67 // OBSOLETE fetch_inferior_registers (int regno)
  68 // OBSOLETE {
  69 // OBSOLETE   register unsigned int regaddr;
  70 // OBSOLETE   char buf[MAX_REGISTER_RAW_SIZE];
  71 // OBSOLETE   register int i;
  72 // OBSOLETE
  73 // OBSOLETE   struct USER u;
  74 // OBSOLETE   unsigned int offset;
  75 // OBSOLETE
  76 // OBSOLETE   offset = (char *) &u.pt_r0 - (char *) &u;
  77 // OBSOLETE   regaddr = offset;         /* byte offset to r0; */
  78 // OBSOLETE
  79 // OBSOLETE /*  offset = ptrace (3, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) offset, 0) - KERNEL_U_ADDR; */
  80 // OBSOLETE   for (regno = 0; regno < NUM_REGS; regno++)
  81 // OBSOLETE     {
  82 // OBSOLETE       /*regaddr = register_addr (regno, offset); */
  83 // OBSOLETE       /* 88k enhancement  */
  84 // OBSOLETE
  85 // OBSOLETE       for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
  86 // OBSOLETE     {
  87 // OBSOLETE       *(int *) &buf[i] = ptrace (3, PIDGET (inferior_ptid),
  88 // OBSOLETE                                  (PTRACE_ARG3_TYPE) regaddr, 0);
  89 // OBSOLETE       regaddr += sizeof (int);
  90 // OBSOLETE     }
  91 // OBSOLETE       supply_register (regno, buf);
  92 // OBSOLETE     }
  93 // OBSOLETE   /* now load up registers 36 - 38; special pc registers */
  94 // OBSOLETE   *(int *) &buf[0] = ptrace (3, PIDGET (inferior_ptid),
  95 // OBSOLETE                          (PTRACE_ARG3_TYPE) SXIP_OFFSET, 0);
  96 // OBSOLETE   supply_register (SXIP_REGNUM, buf);
  97 // OBSOLETE   *(int *) &buf[0] = ptrace (3, PIDGET (inferior_ptid),
  98 // OBSOLETE                          (PTRACE_ARG3_TYPE) SNIP_OFFSET, 0);
  99 // OBSOLETE   supply_register (SNIP_REGNUM, buf);
 100 // OBSOLETE   *(int *) &buf[0] = ptrace (3, PIDGET (inferior_ptid),
 101 // OBSOLETE                          (PTRACE_ARG3_TYPE) SFIP_OFFSET, 0);
 102 // OBSOLETE   supply_register (SFIP_REGNUM, buf);
 103 // OBSOLETE }
 104 // OBSOLETE
 105 // OBSOLETE /* Store our register values back into the inferior.
 106 // OBSOLETE    If REGNO is -1, do this for all registers.
 107 // OBSOLETE    Otherwise, REGNO specifies which register (so we can save time).  */
 108 // OBSOLETE
 109 // OBSOLETE void
 110 // OBSOLETE store_inferior_registers (int regno)
 111 // OBSOLETE {
 112 // OBSOLETE   register unsigned int regaddr;
 113 // OBSOLETE   char buf[80];
 114 // OBSOLETE
 115 // OBSOLETE   struct USER u;
 116 // OBSOLETE
 117 // OBSOLETE   unsigned int offset = (char *) &u.pt_r0 - (char *) &u;
 118 // OBSOLETE
 119 // OBSOLETE   regaddr = offset;
 120 // OBSOLETE
 121 // OBSOLETE   /* Don't try to deal with EXIP_REGNUM or ENIP_REGNUM, because I think either
 122 // OBSOLETE      svr3 doesn't run on an 88110, or the kernel isolates the different (not
 123 // OBSOLETE      completely sure this is true, but seems to be.  */
 124 // OBSOLETE   if (regno >= 0)
 125 // OBSOLETE     {
 126 // OBSOLETE       /*      regaddr = register_addr (regno, offset); */
 127 // OBSOLETE       if (regno < PC_REGNUM)
 128 // OBSOLETE     {
 129 // OBSOLETE       regaddr = offset + regno * sizeof (int);
 130 // OBSOLETE       errno = 0;
 131 // OBSOLETE       ptrace (6, PIDGET (inferior_ptid),
 132 // OBSOLETE               (PTRACE_ARG3_TYPE) regaddr, read_register (regno));
 133 // OBSOLETE       if (errno != 0)
 134 // OBSOLETE         {
 135 // OBSOLETE           sprintf (buf, "writing register number %d", regno);
 136 // OBSOLETE           perror_with_name (buf);
 137 // OBSOLETE         }
 138 // OBSOLETE     }
 139 // OBSOLETE       else if (regno == SXIP_REGNUM)
 140 // OBSOLETE     ptrace (6, PIDGET (inferior_ptid),
 141 // OBSOLETE             (PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (regno));
 142 // OBSOLETE       else if (regno == SNIP_REGNUM)
 143 // OBSOLETE     ptrace (6, PIDGET (inferior_ptid),
 144 // OBSOLETE             (PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (regno));
 145 // OBSOLETE       else if (regno == SFIP_REGNUM)
 146 // OBSOLETE     ptrace (6, PIDGET (inferior_ptid),
 147 // OBSOLETE             (PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (regno));
 148 // OBSOLETE       else
 149 // OBSOLETE     printf_unfiltered ("Bad register number for store_inferior routine\n");
 150 // OBSOLETE     }
 151 // OBSOLETE   else
 152 // OBSOLETE     {
 153 // OBSOLETE       for (regno = 0; regno < PC_REGNUM; regno++)
 154 // OBSOLETE     {
 155 // OBSOLETE       /*      regaddr = register_addr (regno, offset); */
 156 // OBSOLETE       errno = 0;
 157 // OBSOLETE       regaddr = offset + regno * sizeof (int);
 158 // OBSOLETE       ptrace (6, PIDGET (inferior_ptid),
 159 // OBSOLETE               (PTRACE_ARG3_TYPE) regaddr, read_register (regno));
 160 // OBSOLETE       if (errno != 0)
 161 // OBSOLETE         {
 162 // OBSOLETE           sprintf (buf, "writing register number %d", regno);
 163 // OBSOLETE           perror_with_name (buf);
 164 // OBSOLETE         }
 165 // OBSOLETE     }
 166 // OBSOLETE       ptrace (6, PIDGET (inferior_ptid),
 167 // OBSOLETE           (PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (SXIP_REGNUM));
 168 // OBSOLETE       ptrace (6, PIDGET (inferior_ptid),
 169 // OBSOLETE           (PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (SNIP_REGNUM));
 170 // OBSOLETE       ptrace (6, PIDGET (inferior_ptid),
 171 // OBSOLETE           (PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (SFIP_REGNUM));
 172 // OBSOLETE     }
 173 // OBSOLETE }
 174 // OBSOLETE
 175 // OBSOLETE
 176 // OBSOLETE /* blockend is the address of the end of the user structure */
 177 // OBSOLETE m88k_register_u_addr (int blockend, int regnum)
 178 // OBSOLETE {
 179 // OBSOLETE   struct USER u;
 180 // OBSOLETE   int ustart = blockend - sizeof (struct USER);
 181 // OBSOLETE   switch (regnum)
 182 // OBSOLETE     {
 183 // OBSOLETE     case 0:
 184 // OBSOLETE     case 1:
 185 // OBSOLETE     case 2:
 186 // OBSOLETE     case 3:
 187 // OBSOLETE     case 4:
 188 // OBSOLETE     case 5:
 189 // OBSOLETE     case 6:
 190 // OBSOLETE     case 7:
 191 // OBSOLETE     case 8:
 192 // OBSOLETE     case 9:
 193 // OBSOLETE     case 10:
 194 // OBSOLETE     case 11:
 195 // OBSOLETE     case 12:
 196 // OBSOLETE     case 13:
 197 // OBSOLETE     case 14:
 198 // OBSOLETE     case 15:
 199 // OBSOLETE     case 16:
 200 // OBSOLETE     case 17:
 201 // OBSOLETE     case 18:
 202 // OBSOLETE     case 19:
 203 // OBSOLETE     case 20:
 204 // OBSOLETE     case 21:
 205 // OBSOLETE     case 22:
 206 // OBSOLETE     case 23:
 207 // OBSOLETE     case 24:
 208 // OBSOLETE     case 25:
 209 // OBSOLETE     case 26:
 210 // OBSOLETE     case 27:
 211 // OBSOLETE     case 28:
 212 // OBSOLETE     case 29:
 213 // OBSOLETE     case 30:
 214 // OBSOLETE     case 31:
 215 // OBSOLETE       return (ustart + ((int) &u.pt_r0 - (int) &u) + REGISTER_SIZE * regnum);
 216 // OBSOLETE     case PSR_REGNUM:
 217 // OBSOLETE       return (ustart + ((int) &u.pt_psr - (int) &u));
 218 // OBSOLETE     case FPSR_REGNUM:
 219 // OBSOLETE       return (ustart + ((int) &u.pt_fpsr - (int) &u));
 220 // OBSOLETE     case FPCR_REGNUM:
 221 // OBSOLETE       return (ustart + ((int) &u.pt_fpcr - (int) &u));
 222 // OBSOLETE     case SXIP_REGNUM:
 223 // OBSOLETE       return (ustart + SXIP_OFFSET);
 224 // OBSOLETE     case SNIP_REGNUM:
 225 // OBSOLETE       return (ustart + SNIP_OFFSET);
 226 // OBSOLETE     case SFIP_REGNUM:
 227 // OBSOLETE       return (ustart + SFIP_OFFSET);
 228 // OBSOLETE     default:
 229 // OBSOLETE       if (regnum < NUM_REGS)
 230 // OBSOLETE     /* The register is one of those which is not defined...
 231 // OBSOLETE        give it zero */
 232 // OBSOLETE     return (ustart + ((int) &u.pt_r0 - (int) &u));
 233 // OBSOLETE       else
 234 // OBSOLETE     return (blockend + REGISTER_SIZE * regnum);
 235 // OBSOLETE     }
 236 // OBSOLETE }
 237 // OBSOLETE
 238 // OBSOLETE #ifdef USE_PROC_FS
 239 // OBSOLETE
 240 // OBSOLETE #include <sys/procfs.h>
 241 // OBSOLETE
 242 // OBSOLETE /* Prototypes for supply_gregset etc. */
 243 // OBSOLETE #include "gregset.h"
 244 // OBSOLETE
 245 // OBSOLETE /*  Given a pointer to a general register set in /proc format (gregset_t *),
 246 // OBSOLETE    unpack the register contents and supply them as gdb's idea of the current
 247 // OBSOLETE    register values. */
 248 // OBSOLETE
 249 // OBSOLETE void
 250 // OBSOLETE supply_gregset (gregset_t *gregsetp)
 251 // OBSOLETE {
 252 // OBSOLETE   register int regi;
 253 // OBSOLETE   register greg_t *regp = (greg_t *) gregsetp;
 254 // OBSOLETE
 255 // OBSOLETE   for (regi = 0; regi <= SP_REGNUM; regi++)
 256 // OBSOLETE     supply_register (regi, (char *) (regp + regi));
 257 // OBSOLETE
 258 // OBSOLETE   supply_register (SXIP_REGNUM, (char *) (regp + R_XIP));
 259 // OBSOLETE   supply_register (SNIP_REGNUM, (char *) (regp + R_NIP));
 260 // OBSOLETE   supply_register (SFIP_REGNUM, (char *) (regp + R_FIP));
 261 // OBSOLETE   supply_register (PSR_REGNUM, (char *) (regp + R_PSR));
 262 // OBSOLETE   supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR));
 263 // OBSOLETE   supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR));
 264 // OBSOLETE }
 265 // OBSOLETE
 266 // OBSOLETE void
 267 // OBSOLETE fill_gregset (gregset_t *gregsetp, int regno)
 268 // OBSOLETE {
 269 // OBSOLETE   int regi;
 270 // OBSOLETE   register greg_t *regp = (greg_t *) gregsetp;
 271 // OBSOLETE
 272 // OBSOLETE   for (regi = 0; regi <= R_R31; regi++)
 273 // OBSOLETE     if ((regno == -1) || (regno == regi))
 274 // OBSOLETE       *(regp + regi) = *(int *) &registers[REGISTER_BYTE (regi)];
 275 // OBSOLETE
 276 // OBSOLETE   if ((regno == -1) || (regno == SXIP_REGNUM))
 277 // OBSOLETE     *(regp + R_XIP) = *(int *) &registers[REGISTER_BYTE (SXIP_REGNUM)];
 278 // OBSOLETE   if ((regno == -1) || (regno == SNIP_REGNUM))
 279 // OBSOLETE     *(regp + R_NIP) = *(int *) &registers[REGISTER_BYTE (SNIP_REGNUM)];
 280 // OBSOLETE   if ((regno == -1) || (regno == SFIP_REGNUM))
 281 // OBSOLETE     *(regp + R_FIP) = *(int *) &registers[REGISTER_BYTE (SFIP_REGNUM)];
 282 // OBSOLETE   if ((regno == -1) || (regno == PSR_REGNUM))
 283 // OBSOLETE     *(regp + R_PSR) = *(int *) &registers[REGISTER_BYTE (PSR_REGNUM)];
 284 // OBSOLETE   if ((regno == -1) || (regno == FPSR_REGNUM))
 285 // OBSOLETE     *(regp + R_FPSR) = *(int *) &registers[REGISTER_BYTE (FPSR_REGNUM)];
 286 // OBSOLETE   if ((regno == -1) || (regno == FPCR_REGNUM))
 287 // OBSOLETE     *(regp + R_FPCR) = *(int *) &registers[REGISTER_BYTE (FPCR_REGNUM)];
 288 // OBSOLETE }
 289 // OBSOLETE
 290 // OBSOLETE #endif /* USE_PROC_FS */