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,
  97                                    char *val, int vallen));
  98   void (*load_routine) PARAMS ((serial_t desc, char *file,
  99                                 int hashmark)); /* Download routine */
 100   int (*dumpregs) PARAMS((void)) ;    /* routine to dump all registers */
 101   int (*continue_hook) PARAMS((void)) ; /* Emit the continue command */
 102   int (*wait_filter) PARAMS((char * buf, /* Maybe contains registers */
 103                             int bufmax ,
 104                             int * response_length,
 105                             struct target_waitstatus * status)) ;
 106   char *load;                   /* load command */
 107   char *loadresp;               /* Response to load command */
 108   char *prompt;                 /* monitor command prompt */
 109   char *line_term;              /* end-of-command delimitor */
 110   char *cmd_end;                /* optional command terminator */
 111   struct target_ops *target;    /* target operations */
 112   int stopbits;                 /* number of stop bits */
 113   char **regnames;              /* array of register names in ascii */
 114   int magic;                    /* Check value */
 115 };
 116
 117 /* The monitor ops magic number, used to detect if an ops structure doesn't
 118    have the right number of entries filled in. */
 119
 120 #define MONITOR_OPS_MAGIC 600925
 121
 122 /* Flag definitions. */
 123
 124 /* If set, then clear breakpoint command uses address, otherwise it
 125    uses an index returned by the monitor.  */
 126
 127 #define MO_CLR_BREAK_USES_ADDR 0x1
 128
 129 /* If set, then memory fill command uses STARTADDR, ENDADDR+1, VALUE
 130    as args, else it uses STARTADDR, LENGTH, VALUE as args. */
 131
 132 #define MO_FILL_USES_ADDR 0x2
 133
 134 /* If set, then monitor doesn't automatically supply register dump
 135    when coming back after a continue.  */
 136
 137 #define MO_NEED_REGDUMP_AFTER_CONT 0x4
 138
 139 /* getmem needs start addr and end addr */
 140
 141 #define MO_GETMEM_NEEDS_RANGE 0x8
 142
 143 /* getmem can only read one loc at a time */
 144
 145 #define MO_GETMEM_READ_SINGLE 0x10
 146
 147 /* handle \r\n combinations */
 148
 149 #define MO_HANDLE_NL 0x20
 150
 151 /* don't expect echos in monitor_open */
 152
 153 #define MO_NO_ECHO_ON_OPEN 0x40
 154
 155 /* If set, send break to stop monitor */
 156
 157 #define MO_SEND_BREAK_ON_STOP 0x80
 158
 159 /* If set, target sends an ACK after each S-record */
 160
 161 #define MO_SREC_ACK 0x100
 162
 163 /* Allow 0x prefix on addresses retured from monitor */
 164
 165 #define MO_HEX_PREFIX 0x200
 166
 167 /* Some monitors require a different command when starting a program */
 168
 169 #define MO_RUN_FIRST_TIME 0x400
 170
 171 /* Don't expect echos when getting memory */
 172
 173 #define MO_NO_ECHO_ON_SETMEM 0x800
 174
 175 /* If set, then register store command expects value BEFORE regname */
 176
 177 #define MO_REGISTER_VALUE_FIRST 0x1000
 178
 179 /* If set, then the monitor displays registers as pairs.  */
 180
 181 #define MO_32_REGS_PAIRED 0x2000
 182
 183 /* If set, then register setting happens interactively.  */
 184
 185 #define MO_SETREG_INTERACTIVE 0x4000
 186
 187 /* If set, then memory setting happens interactively.  */
 188
 189 #define MO_SETMEM_INTERACTIVE 0x8000
 190
 191 /* If set, then memory dumps are always on 16-byte boundaries, even
 192    when less is desired.  */
 193
 194 #define MO_GETMEM_16_BOUNDARY 0x10000
 195
 196 /* If set, then the monitor numbers its breakpoints starting from 1.  */
 197
 198 #define MO_CLR_BREAK_1_BASED 0x20000
 199
 200 /* If set, then the monitor acks srecords with a plus sign.  */
 201
 202 #define MO_SREC_ACK_PLUS 0x40000
 203
 204 /* If set, then the monitor "acks" srecords with rotating lines.  */
 205
 206 #define MO_SREC_ACK_ROTATE 0x80000
 207
 208 /* If set, then remove useless address bits from memory addresses.  */
 209
 210 #define MO_ADDR_BITS_REMOVE 0x100000
 211
 212 /* If set, then display target program output if prefixed by ^O.  */
 213
 214 #define MO_PRINT_PROGRAM_OUTPUT 0x200000
 215
 216 /* Some dump bytes commands align the first data with the preceeding
 217 16 byte boundary. Some print blanks and start at the exactly the
 218 requested boundary. */
 219
 220 #define MO_EXACT_DUMPADDR 0x400000
 221
 222 /* Rather entering and exiting the write memory dialog for each word byte,
 223    we can save time by transferring the whole block without exiting
 224    the memory editing mode. You only need to worry about this
 225    if you are doing memory downloading.
 226    This engages a new write function registered with dcache.
 227    */
 228 #define MO_HAS_BLOCKWRITES 0x800000
 229
 230 #define SREC_SIZE 160
 231
 232 extern void monitor_open PARAMS ((char *args, struct monitor_ops *ops,
 233                                   int from_tty));
 234 extern void monitor_close PARAMS ((int quitting));
 235 extern char *monitor_supply_register PARAMS ((int regno, char *valstr));
 236 extern int monitor_expect PARAMS ((char *prompt, char *buf, int buflen));
 237 extern int monitor_expect_prompt PARAMS ((char *buf, int buflen));
 238 extern void monitor_printf PARAMS ((char *, ...))
 239      ATTR_FORMAT(printf, 1, 2);
 240 extern void monitor_printf_noecho PARAMS ((char *, ...))
 241      ATTR_FORMAT(printf, 1, 2);
 242 extern void monitor_write PARAMS ((char *buf, int buflen));
 243 extern int monitor_readchar PARAMS ((void));
 244 extern char *monitor_get_dev_name PARAMS ((void));
 245 extern void init_monitor_ops PARAMS ((struct target_ops *));
 246 extern int monitor_dump_reg_block PARAMS((char * dump_cmd)) ;
 247 extern void flush_monitor_dcache PARAMS ((void));