gdb/monitor.h

   1 /* Definitions for remote debugging interface for ROM monitors.
   2     Copyright 1990, 1991, 1992, 1996 Free Software Foundation, Inc.
   3     Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
   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 #include "serial.h"
  23
  24 /* This structure describes the strings necessary to give small command
  25    sequences to the monitor, and parse the response.
  26
  27    CMD is the actual command typed at the monitor.  Usually this has
  28    embedded sequences ala printf, which are substituted with the
  29    arguments appropriate to that type of command.  Ie: to examine a
  30    register, we substitute the register name for the first arg.  To
  31    modify memory, we substitute the memory location and the new
  32    contents for the first and second args, etc...
  33
  34    RESP_DELIM used to home in on the response string, and is used to
  35    disambiguate the answer within the pile of text returned by the
  36    monitor.  This should be a unique string that immediately precedes
  37    the answer.  Ie: if your monitor prints out `PC: 00000001= ' in
  38    response to asking for the PC, you should use `: ' as the
  39    RESP_DELIM.  RESP_DELIM may be NULL if the res- ponse is going to
  40    be ignored, or has no particular leading text.
  41
  42    TERM is the string that the monitor outputs to indicate that it is
  43    idle, and waiting for input.  This is usually a prompt of some
  44    sort.  In the previous example, it would be `= '.  It is important
  45    that TERM really means that the monitor is idle, otherwise GDB may
  46    try to type at it when it isn't ready for input.  This is a problem
  47    because many monitors cannot deal with type-ahead.  TERM may be
  48    NULL if the normal prompt is output.
  49
  50    TERM_CMD is used to quit out of the subcommand mode and get back to
  51    the main prompt.  TERM_CMD may be NULL if it isn't necessary.  It
  52    will also be ignored if TERM is NULL.  */
  53
  54 struct memrw_cmd
  55 {
  56   char *cmdb;                   /* Command to send for byte read/write */
  57   char *cmdw;                   /* Command for word (16 bit) read/write */
  58   char *cmdl;                   /* Command for long (32 bit) read/write */
  59   char *cmdll;                  /* Command for long long (64 bit) read/write */
  60   char *resp_delim;             /* String just prior to the desired value */
  61   char *term;                   /* Terminating string to search for */
  62   char *term_cmd;               /* String to get out of sub-mode (if necessary) */
  63 };
  64
  65 struct regrw_cmd
  66 {
  67   char *cmd;                    /* Command to send for reg read/write */
  68   char *resp_delim;             /* String (actually a regexp if getmem) just
  69                                    prior to the desired value */
  70   char *term;                   /* Terminating string to search for */
  71   char *term_cmd;               /* String to get out of sub-mode (if necessary) */
  72 };
  73
  74 struct monitor_ops
  75 {
  76   int flags;                    /* See below */
  77   char **init;                  /* List of init commands.  NULL terminated. */
  78   char *cont;                   /* continue command */
  79   char *step;                   /* single step */
  80   char *stop;                   /* Interrupt program string */
  81   char *set_break;              /* set a breakpoint */
  82   char *clr_break;              /* clear a breakpoint */
  83   char *clr_all_break;          /* Clear all breakpoints */
  84   char *fill;                   /* Memory fill cmd (addr len val) */
  85   struct memrw_cmd setmem;      /* set memory to a value */
  86   struct memrw_cmd getmem;      /* display memory */
  87   struct regrw_cmd setreg;      /* set a register */
  88   struct regrw_cmd getreg;      /* get a register */
  89                                 /* Some commands can dump a bunch of registers
  90                                    at once.  This comes as a set of REG=VAL
  91                                    pairs.  This should be called for each pair
  92                                    of registers that we can parse to supply
  93                                    GDB with the value of a register.  */
  94   char *dump_registers;         /* Command to dump all regs at once */
  95   char *register_pattern;       /* Pattern that picks out register from reg dump */
  96   void (*supply_register) PARAMS ((char *name, int namelen, char *val, int vallen));
  97   void (*load_routine) PARAMS ((serial_t desc, char *file, int hashmark)); /* Download routine */
  98   char *load;                   /* load command */
  99   char *loadresp;               /* Response to load command */
 100   char *prompt;                 /* monitor command prompt */
 101   char *line_term;              /* end-of-command delimitor */
 102   char *cmd_end;                /* optional command terminator */
 103   struct target_ops *target;    /* target operations */
 104   int stopbits;                 /* number of stop bits */
 105   char **regnames;              /* array of register names in ascii */
 106   int magic;                    /* Check value */
 107 };
 108
 109 /* The monitor ops magic number, used to detect if an ops structure doesn't
 110    have the right number of entries filled in. */
 111
 112 #define MONITOR_OPS_MAGIC 600925
 113
 114 /* Flag definitions. */
 115
 116 /* If set, then clear breakpoint command uses address, otherwise it
 117    uses an index returned by the monitor.  */
 118
 119 #define MO_CLR_BREAK_USES_ADDR 0x1
 120
 121 /* If set, then memory fill command uses STARTADDR, ENDADDR+1, VALUE
 122    as args, else it uses STARTADDR, LENGTH, VALUE as args. */
 123
 124 #define MO_FILL_USES_ADDR 0x2
 125
 126 /* If set, then monitor doesn't automatically supply register dump
 127    when coming back after a continue.  */
 128
 129 #define MO_NEED_REGDUMP_AFTER_CONT 0x4
 130
 131 /* getmem needs start addr and end addr */
 132
 133 #define MO_GETMEM_NEEDS_RANGE 0x8
 134
 135 /* getmem can only read one loc at a time */
 136
 137 #define MO_GETMEM_READ_SINGLE 0x10
 138
 139 /* handle \r\n combinations */
 140
 141 #define MO_HANDLE_NL 0x20
 142
 143 /* don't expect echos in monitor_open */
 144
 145 #define MO_NO_ECHO_ON_OPEN 0x40
 146
 147 /* If set, send break to stop monitor */
 148
 149 #define MO_SEND_BREAK_ON_STOP 0x80
 150
 151 /* If set, target sends an ACK after each S-record */
 152
 153 #define MO_SREC_ACK 0x100
 154
 155 /* Allow 0x prefix on addresses retured from monitor */
 156
 157 #define MO_HEX_PREFIX 0x200
 158
 159 /* Some monitors require a different command when starting a program */
 160
 161 #define MO_RUN_FIRST_TIME 0x400
 162
 163 /* Don't expect echos when getting memory */
 164
 165 #define MO_NO_ECHO_ON_SETMEM 0x800
 166
 167 #define SREC_SIZE 160
 168
 169 extern void monitor_open PARAMS ((char *args, struct monitor_ops *ops,
 170                                   int from_tty));
 171 extern void monitor_close PARAMS ((int quitting));
 172 extern char *monitor_supply_register PARAMS ((int regno, char *valstr));
 173 extern int monitor_expect PARAMS ((char *prompt, char *buf, int buflen));
 174 extern int monitor_expect_prompt PARAMS ((char *buf, int buflen));
 175 extern void monitor_printf PARAMS ((char *, ...))
 176      ATTR_FORMAT(printf, 1, 2);
 177 extern void monitor_printf_noecho PARAMS ((char *, ...))
 178      ATTR_FORMAT(printf, 1, 2);
 179 extern void init_monitor_ops PARAMS ((struct target_ops *));