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 GDB 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 1, or (at your option)
   9 any later version.
  10
  11 GDB 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 GDB; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 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
  51 pyr_do_registers_info (regnum)
  52     int regnum;
  53 {
  54   /* On a pyr, we know a virtual register can always fit in an long.
  55      Here (and elsewhere) we take advantage of that.  Yuk.  */
  56   long raw_regs[MAX_REGISTER_RAW_SIZE*NUM_REGS];
  57   register int i;
  58
  59   for (i = 0 ; i < 64 ; i++) {
  60     read_relative_register_raw_bytes(i, raw_regs+i);
  61   }
  62   if (regnum == -1)
  63     pyr_print_registers (raw_regs, regnum);
  64   else
  65     for (i = 0; i < NUM_REGS; i++)
  66       if (i == regnum) {
  67         long val = raw_regs[i];
  68
  69         fputs_filtered (reg_names[i], stdout);
  70         printf_filtered(":");
  71         print_spaces_filtered (6 - strlen (reg_names[i]), stdout);
  72         if (val == 0)
  73           printf_filtered ("0");
  74         else
  75           printf_filtered ("0x%08x  %d", val, val);
  76         printf_filtered("\n");
  77       }
  78 }
  79 \f
  80 /*** Debugging editions of various macros from m-pyr.h ****/
  81
  82 CORE_ADDR frame_locals_address (frame)
  83     FRAME frame;
  84 {
  85   register int addr = find_saved_register (frame,CFP_REGNUM);
  86   register int result = read_memory_integer (addr, 4);
  87 #ifdef PYRAMID_CONTROL_FRAME_DEBUGGING
  88   fprintf (stderr,
  89            "\t[[..frame_locals:%8x, %s= %x @%x fcfp= %x foo= %x\n\t gr13=%x pr13=%x tr13=%x @%x]]\n",
  90            frame->frame,
  91            reg_names[CFP_REGNUM],
  92            result, addr,
  93            frame->frame_cfp, (CFP_REGNUM),
  94
  95
  96            read_register(13), read_register(29), read_register(61),
  97            find_saved_register(frame, 61));
  98 #endif /* PYRAMID_CONTROL_FRAME_DEBUGGING */
  99
 100   /* FIXME: I thought read_register (CFP_REGNUM) should be the right answer;
 101      or at least CFP_REGNUM relative to FRAME (ie, result).
 102      There seems to be a bug in the way the innermost frame is set up.  */
 103
 104     return ((frame->next) ? result: frame->frame_cfp);
 105 }
 106
 107 CORE_ADDR frame_args_addr (frame)
 108     FRAME frame;
 109 {
 110   register int addr = find_saved_register (frame,CFP_REGNUM);
 111   register int result = read_memory_integer (addr, 4);
 112
 113 #ifdef PYRAMID_CONTROL_FRAME_DEBUGGING
 114   fprintf (stderr,
 115            "\t[[..frame_args:%8x, %s= %x @%x fcfp= %x r_r= %x\n\t gr13=%x pr13=%x tr13=%x @%x]]\n",
 116            frame->frame,
 117            reg_names[CFP_REGNUM],
 118            result, addr,
 119            frame->frame_cfp, read_register(CFP_REGNUM),
 120
 121            read_register(13), read_register(29), read_register(61),
 122            find_saved_register(frame, 61));
 123 #endif /*  PYRAMID_CONTROL_FRAME_DEBUGGING */
 124
 125   /* FIXME: I thought read_register (CFP_REGNUM) should be the right answer;
 126      or at least CFP_REGNUM relative to FRAME (ie, result).
 127      There seems to be a bug in the way the innermost frame is set up.  */
 128     return ((frame->next) ? result: frame->frame_cfp);
 129 }