gdb/pyr-tdep.c

   1 /* Pyramid target-dependent code for GDB.
   2    Copyright (C) 1988, 1989, 1991 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 #include "param.h"
  21 #include "defs.h"
  22
  23 /*** Prettier register printing. ***/
  24
  25 /* Print registers in the same format as pyramid's dbx, adb, sdb.  */
  26 pyr_print_registers(reg_buf, regnum)
  27     long *reg_buf[];
  28 {
  29   register int regno;
  30   int usp, ksp;
  31   struct user u;
  32
  33   for (regno = 0; regno < 16; regno++) {
  34     printf/*_filtered*/ ("%6.6s: %8x  %6.6s: %8x  %6s: %8x  %6s: %8x\n",
  35                      reg_names[regno], reg_buf[regno],
  36                      reg_names[regno+16], reg_buf[regno+16],
  37                      reg_names[regno+32], reg_buf[regno+32],
  38                      reg_names[regno+48], reg_buf[regno+48]);
  39   }
  40   usp = ptrace (3, inferior_pid,
  41                       ((char *)&u.u_pcb.pcb_usp) -
  42                       ((char *)&u), 0);
  43   ksp = ptrace (3, inferior_pid,
  44                       ((char *)&u.u_pcb.pcb_ksp) -
  45                       ((char *)&u), 0);
  46   printf/*_filtered*/ ("\n%6.6s: %8x  %6.6s: %8x (%08x) %6.6s %8x\n",
  47                    reg_names[CSP_REGNUM],reg_buf[CSP_REGNUM],
  48                    reg_names[KSP_REGNUM], reg_buf[KSP_REGNUM], ksp,
  49                    "usp", usp);
  50 }
  51
  52 /* Print the register regnum, or all registers if regnum is -1.
  53    fpregs is currently ignored.  */
  54
  55 pyr_do_registers_info (regnum, fpregs)
  56     int regnum;
  57     int fpregs;
  58 {
  59   /* On a pyr, we know a virtual register can always fit in an long.
  60      Here (and elsewhere) we take advantage of that.  Yuk.  */
  61   long raw_regs[MAX_REGISTER_RAW_SIZE*NUM_REGS];
  62   register int i;
  63
  64   for (i = 0 ; i < 64 ; i++) {
  65     read_relative_register_raw_bytes(i, raw_regs+i);
  66   }
  67   if (regnum == -1)
  68     pyr_print_registers (raw_regs, regnum);
  69   else
  70     for (i = 0; i < NUM_REGS; i++)
  71       if (i == regnum) {
  72         long val = raw_regs[i];
  73
  74         fputs_filtered (reg_names[i], stdout);
  75         printf_filtered(":");
  76         print_spaces_filtered (6 - strlen (reg_names[i]), stdout);
  77         if (val == 0)
  78           printf_filtered ("0");
  79         else
  80           printf_filtered ("%s  %d", local_hex_string_custom(val,"08"), val);
  81         printf_filtered("\n");
  82       }
  83 }
  84 \f
  85 /*** Debugging editions of various macros from m-pyr.h ****/
  86
  87 CORE_ADDR frame_locals_address (frame)
  88     FRAME frame;
  89 {
  90   register int addr = find_saved_register (frame,CFP_REGNUM);
  91   register int result = read_memory_integer (addr, 4);
  92 #ifdef PYRAMID_CONTROL_FRAME_DEBUGGING
  93   fprintf (stderr,
  94            "\t[[..frame_locals:%8x, %s= %x @%x fcfp= %x foo= %x\n\t gr13=%x pr13=%x tr13=%x @%x]]\n",
  95            frame->frame,
  96            reg_names[CFP_REGNUM],
  97            result, addr,
  98            frame->frame_cfp, (CFP_REGNUM),
  99
 100
 101            read_register(13), read_register(29), read_register(61),
 102            find_saved_register(frame, 61));
 103 #endif /* PYRAMID_CONTROL_FRAME_DEBUGGING */
 104
 105   /* FIXME: I thought read_register (CFP_REGNUM) should be the right answer;
 106      or at least CFP_REGNUM relative to FRAME (ie, result).
 107      There seems to be a bug in the way the innermost frame is set up.  */
 108
 109     return ((frame->next) ? result: frame->frame_cfp);
 110 }
 111
 112 CORE_ADDR frame_args_addr (frame)
 113     FRAME frame;
 114 {
 115   register int addr = find_saved_register (frame,CFP_REGNUM);
 116   register int result = read_memory_integer (addr, 4);
 117
 118 #ifdef PYRAMID_CONTROL_FRAME_DEBUGGING
 119   fprintf (stderr,
 120            "\t[[..frame_args:%8x, %s= %x @%x fcfp= %x r_r= %x\n\t gr13=%x pr13=%x tr13=%x @%x]]\n",
 121            frame->frame,
 122            reg_names[CFP_REGNUM],
 123            result, addr,
 124            frame->frame_cfp, read_register(CFP_REGNUM),
 125
 126            read_register(13), read_register(29), read_register(61),
 127            find_saved_register(frame, 61));
 128 #endif /*  PYRAMID_CONTROL_FRAME_DEBUGGING */
 129
 130   /* FIXME: I thought read_register (CFP_REGNUM) should be the right answer;
 131      or at least CFP_REGNUM relative to FRAME (ie, result).
 132      There seems to be a bug in the way the innermost frame is set up.  */
 133     return ((frame->next) ? result: frame->frame_cfp);
 134 }