gdb/config/i960/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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 /*****************************************************************************
  22  * Definitions to target GDB to an i960 debugged over a serial line.
  23  ******************************************************************************/
  24
  25 #include "i960/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", no_argument, &nindy_old_protocol, 1},     \
  41         {"brk", no_argument, &nindy_initial_brk, 1},    \
  42         {"ser", required_argument, 0, 1004},  /* 1004 is magic cookie for ADDL_CASES */
  43
  44 #define ADDITIONAL_OPTION_CASES \
  45         case 1004:      /* -ser 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   -ser 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 (!SET_TOP_LEVEL () && nindy_ttyname) {               \
  61           nindy_open (nindy_ttyname, !batch);                   \
  62           if (!SET_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 extern void
  74 nindy_before_main_loop();               /* In remote-nindy.c */
  75
  76 /* FRAME_CHAIN_VALID returns zero if the given frame is the outermost one
  77    and has no caller.
  78
  79    On the i960, each various target system type defines FRAME_CHAIN_VALID,
  80    since it differs between NINDY and VxWorks, the two currently supported
  81    targets types.  */
  82
  83 #define FRAME_CHAIN_VALID(chain, thisframe) \
  84         nindy_frame_chain_valid (chain, thisframe)
  85
  86 extern int
  87 nindy_frame_chain_valid();              /* See nindy-tdep.c */
  88
  89 /* Sequence of bytes for breakpoint instruction */
  90
  91 #define BREAKPOINT {0x00, 0x3e, 0x00, 0x66}
  92
  93 /* Amount ip must be decremented by after a breakpoint.
  94  * This is often the number of bytes in BREAKPOINT but not always.
  95  */
  96
  97 #define DECR_PC_AFTER_BREAK 0