gdb/tm-nindy960.h

   1 /* Parameters for Intel 960 running NINDY monitor, for GDB, the GNU debugger.
   2    Copyright (C) 1990-1991 Free Software Foundation, Inc.
   3    Contributed by Intel Corporation and Cygnus Support.
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 /*****************************************************************************
  22  * Definitions to target GDB to an i960 debugged over a serial line.
  23  ******************************************************************************/
  24
  25 #include "tm-i960.h"
  26
  27 /* Override the standard gdb prompt when compiled for this target.  */
  28
  29 #define DEFAULT_PROMPT  "(gdb960) "
  30
  31 /* Additional command line options accepted by nindy gdb's, for handling
  32    the remote-nindy.c interface.  These should really be target-specific
  33    rather than architecture-specific.  */
  34
  35 extern int nindy_old_protocol;  /* nonzero if old NINDY serial protocol */
  36 extern int nindy_initial_brk;   /* Send a BREAK to reset board first */
  37 extern char *nindy_ttyname;     /* Name of serial port to talk to nindy */
  38
  39 #define ADDITIONAL_OPTIONS \
  40         {"O", 0, &nindy_old_protocol, 1},       \
  41         {"brk", 0, &nindy_initial_brk, 1},      \
  42         {"r", 1, 0, 1004},  /* 1004 is magic cookie for ADDL_CASES */
  43
  44 #define ADDITIONAL_OPTION_CASES \
  45         case 1004:      /* -r option:  remote nindy auto-start */       \
  46           nindy_ttyname = optarg;       \
  47           break;
  48
  49 #define ADDITIONAL_OPTION_HELP \
  50         "\
  51   -O                Use old protocol to talk to a Nindy target\n\
  52   -brk              Send a break to a Nindy target to reset it.\n\
  53   -r SERIAL         Open remote Nindy session to SERIAL port.\n\
  54 "
  55
  56 /* If specified on the command line, open tty for talking to nindy,
  57    and download the executable file if one was specified.  */
  58
  59 #define ADDITIONAL_OPTION_HANDLER       \
  60         if (!setjmp (to_top_level) && nindy_ttyname) {          \
  61           nindy_open (nindy_ttyname, !batch);                   \
  62           if ( !setjmp(to_top_level) && execarg ) {             \
  63                 target_load (execarg, !batch);                  \
  64           }                                                     \
  65         }
  66
  67 /* If configured for i960 target, we take control before main loop
  68    and demand that we configure for a nindy target.  */
  69
  70 #define BEFORE_MAIN_LOOP_HOOK   \
  71   nindy_before_main_loop();
  72
  73 /* Address of end of stack space.
  74  *      This probably doesn't matter for nindy, because it's only used
  75  *      in manipulation of core files, which we don't support.
  76  */
  77
  78 #define STACK_END_ADDR (0xfe000000)
  79
  80 /* FRAME_CHAIN_VALID returns zero if the given frame is the outermost one
  81    and has no caller.  In that case, FRAME_CHAIN_COMBINE is not used.
  82
  83    On the i960, each various target system type defines FRAME_CHAIN_VALID,
  84    since it differs between NINDY and VxWorks, the two currently supported
  85    targets types.  */
  86
  87 #define FRAME_CHAIN_VALID(chain, thisframe) \
  88         nindy_frame_chain_valid (chain, thisframe)
  89
  90 extern int nindy_frame_chain_valid();           /* See nindy-tdep.c */
  91
  92 /* Sequence of bytes for breakpoint instruction */
  93
  94 #define BREAKPOINT {0x00, 0x3e, 0x00, 0x66}
  95
  96 /* Amount ip must be decremented by after a breakpoint.
  97  * This is often the number of bytes in BREAKPOINT but not always.
  98  */
  99
 100 #define DECR_PC_AFTER_BREAK 0
 101
 102 /* Not needed, because we don't support core files:
 103  *      #define KERNEL_U_ADDR
 104  *      #define REGISTER_U_ADDR(addr, blockend, regno)
 105  */