gdb/pyr-tdep.c

   1 /* Low level interface to ptrace, for GDB when running under Unix.
   2    Copyright (C) 1988, 1989 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 /*** Prettier register printing. ***/
  21
  22 /* Print registers in the same format as pyramid's dbx, adb, sdb.  */
  23 pyr_print_registers(reg_buf, regnum)
  24     long *reg_buf[];
  25 {
  26   register int regno;
  27   int usp, ksp;
  28   struct user u;
  29
  30   for (regno = 0; regno < 16; regno++) {
  31     printf/*_filtered*/ ("%6.6s: %8x  %6.6s: %8x  %6s: %8x  %6s: %8x\n",
  32                      reg_names[regno], reg_buf[regno],
  33                      reg_names[regno+16], reg_buf[regno+16],
  34                      reg_names[regno+32], reg_buf[regno+32],
  35                      reg_names[regno+48], reg_buf[regno+48]);
  36   }
  37   usp = ptrace (3, inferior_pid,
  38                       ((char *)&u.u_pcb.pcb_usp) -
  39                       ((char *)&u), 0);
  40   ksp = ptrace (3, inferior_pid,
  41                       ((char *)&u.u_pcb.pcb_ksp) -
  42                       ((char *)&u), 0);
  43   printf/*_filtered*/ ("\n%6.6s: %8x  %6.6s: %8x (%08x) %6.6s %8x\n",
  44                    reg_names[CSP_REGNUM],reg_buf[CSP_REGNUM],
  45                    reg_names[KSP_REGNUM], reg_buf[KSP_REGNUM], ksp,
  46                    "usp", usp);
  47 }
  48
  49 /* Print the register regnum, or all registers if regnum is -1.
  50    fpregs is currently ignored.  */
  51
  52 pyr_do_registers_info (regnum, fpregs)
  53     int regnum;
  54     int fpregs;
  55 {
  56   /* On a pyr, we know a virtual register can always fit in an long.
  57      Here (and elsewhere) we take advantage of that.  Yuk.  */
  58   long raw_regs[MAX_REGISTER_RAW_SIZE*NUM_REGS];
  59   register int i;
  60
  61   for (i = 0 ; i < 64 ; i++) {
  62     read_relative_register_raw_bytes(i, raw_regs+i);
  63   }
  64   if (regnum == -1)
  65     pyr_print_registers (raw_regs, regnum);
  66   else
  67     for (i = 0; i < NUM_REGS; i++)
  68       if (i == regnum) {
  69         long val = raw_regs[i];
  70
  71         fputs_filtered (reg_names[i], stdout);
  72         printf_filtered(":");
  73         print_spaces_filtered (6 - strlen (reg_names[i]), stdout);
  74         if (val == 0)
  75           printf_filtered ("0");
  76         else
  77           printf_filtered ("0x%08x  %d", val, val);
  78         printf_filtered("\n");
  79       }
  80 }
  81 \f
  82 /*** Debugging editions of various macros from m-pyr.h ****/
  83
  84 CORE_ADDR frame_locals_address (frame)
  85     FRAME frame;
  86 {
  87   register int addr = find_saved_register (frame,CFP_REGNUM);
  88   register int result = read_memory_integer (addr, 4);
  89 #ifdef PYRAMID_CONTROL_FRAME_DEBUGGING
  90   fprintf (stderr,
  91            "\t[[..frame_locals:%8x, %s= %x @%x fcfp= %x foo= %x\n\t gr13=%x pr13=%x tr13=%x @%x]]\n",
  92            frame->frame,
  93            reg_names[CFP_REGNUM],
  94            result, addr,
  95            frame->frame_cfp, (CFP_REGNUM),
  96
  97
  98            read_register(13), read_register(29), read_register(61),
  99            find_saved_register(frame, 61));
 100 #endif /* PYRAMID_CONTROL_FRAME_DEBUGGING */
 101
 102   /* FIXME: I thought read_register (CFP_REGNUM) should be the right answer;
 103      or at least CFP_REGNUM relative to FRAME (ie, result).
 104      There seems to be a bug in the way the innermost frame is set up.  */
 105
 106     return ((frame->next) ? result: frame->frame_cfp);
 107 }
 108
 109 CORE_ADDR frame_args_addr (frame)
 110     FRAME frame;
 111 {
 112   register int addr = find_saved_register (frame,CFP_REGNUM);
 113   register int result = read_memory_integer (addr, 4);
 114
 115 #ifdef PYRAMID_CONTROL_FRAME_DEBUGGING
 116   fprintf (stderr,
 117            "\t[[..frame_args:%8x, %s= %x @%x fcfp= %x r_r= %x\n\t gr13=%x pr13=%x tr13=%x @%x]]\n",
 118            frame->frame,
 119            reg_names[CFP_REGNUM],
 120            result, addr,
 121            frame->frame_cfp, read_register(CFP_REGNUM),
 122
 123            read_register(13), read_register(29), read_register(61),
 124            find_saved_register(frame, 61));
 125 #endif /*  PYRAMID_CONTROL_FRAME_DEBUGGING */
 126
 127   /* FIXME: I thought read_register (CFP_REGNUM) should be the right answer;
 128      or at least CFP_REGNUM relative to FRAME (ie, result).
 129      There seems to be a bug in the way the innermost frame is set up.  */
 130     return ((frame->next) ? result: frame->frame_cfp);
 131 }