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1 330 jeremybenn
/* Definitions for remote debugging interface for ROM monitors.
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   Copyright (C) 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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   2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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   Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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#ifndef MONITOR_H
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#define MONITOR_H
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struct target_waitstatus;
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struct serial;
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/* This structure describes the strings necessary to give small command
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   sequences to the monitor, and parse the response.
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   CMD is the actual command typed at the monitor.  Usually this has
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   embedded sequences ala printf, which are substituted with the
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   arguments appropriate to that type of command.  Ie: to examine a
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   register, we substitute the register name for the first arg.  To
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   modify memory, we substitute the memory location and the new
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   contents for the first and second args, etc...
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   RESP_DELIM used to home in on the response string, and is used to
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   disambiguate the answer within the pile of text returned by the
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   monitor.  This should be a unique string that immediately precedes
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   the answer.  Ie: if your monitor prints out `PC: 00000001= ' in
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   response to asking for the PC, you should use `: ' as the
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   RESP_DELIM.  RESP_DELIM may be NULL if the res- ponse is going to
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   be ignored, or has no particular leading text.
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   TERM is the string that the monitor outputs to indicate that it is
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   idle, and waiting for input.  This is usually a prompt of some
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   sort.  In the previous example, it would be `= '.  It is important
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   that TERM really means that the monitor is idle, otherwise GDB may
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   try to type at it when it isn't ready for input.  This is a problem
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   because many monitors cannot deal with type-ahead.  TERM may be
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   NULL if the normal prompt is output.
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   TERM_CMD is used to quit out of the subcommand mode and get back to
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   the main prompt.  TERM_CMD may be NULL if it isn't necessary.  It
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   will also be ignored if TERM is NULL.  */
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struct memrw_cmd
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  {
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    char *cmdb;                 /* Command to send for byte read/write */
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    char *cmdw;                 /* Command for word (16 bit) read/write */
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    char *cmdl;                 /* Command for long (32 bit) read/write */
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    char *cmdll;                /* Command for long long (64 bit) read/write */
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    char *resp_delim;           /* String just prior to the desired value */
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    char *term;                 /* Terminating string to search for */
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    char *term_cmd;             /* String to get out of sub-mode (if necessary) */
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  };
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struct regrw_cmd
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  {
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    char *cmd;                  /* Command to send for reg read/write */
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    char *resp_delim;           /* String (actually a regexp if getmem) just
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                                   prior to the desired value */
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    char *term;                 /* Terminating string to search for */
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    char *term_cmd;             /* String to get out of sub-mode (if necessary) */
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  };
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struct monitor_ops
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  {
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    int flags;                  /* See below */
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    char **init;                /* List of init commands.  NULL terminated. */
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    char *cont;                 /* continue command */
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    char *step;                 /* single step */
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    char *stop;                 /* Interrupt program string */
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    char *set_break;            /* set a breakpoint. If NULL, monitor implementation
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                                   sets its own to_insert_breakpoint method. */
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    char *clr_break;            /* clear a breakpoint */
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    char *clr_all_break;        /* Clear all breakpoints */
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    char *fill;                 /* Memory fill cmd (addr len val) */
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    struct memrw_cmd setmem;    /* set memory to a value */
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    struct memrw_cmd getmem;    /* display memory */
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    struct regrw_cmd setreg;    /* set a register */
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    struct regrw_cmd getreg;    /* get a register */
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    /* Some commands can dump a bunch of registers
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       at once.  This comes as a set of REG=VAL
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       pairs.  This should be called for each pair
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       of registers that we can parse to supply
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       GDB with the value of a register.  */
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    char *dump_registers;       /* Command to dump all regs at once */
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    char *register_pattern;     /* Pattern that picks out register from reg dump */
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    void (*supply_register) (struct regcache *regcache, char *name,
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                             int namelen, char *val, int vallen);
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    void (*load_routine) (struct serial *desc, char *file,
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                          int hashmark);        /* Download routine */
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    int (*dumpregs) (struct regcache *);        /* Dump all registers */
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    int (*continue_hook) (void);        /* Emit the continue command */
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    int (*wait_filter) (char *buf,      /* Maybe contains registers */
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                        int bufmax,
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                        int *response_length,
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                        struct target_waitstatus * status);
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    char *load;                 /* load command */
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    char *loadresp;             /* Response to load command */
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    char *prompt;               /* monitor command prompt */
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    char *line_term;            /* end-of-command delimitor */
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    char *cmd_end;              /* optional command terminator */
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    struct target_ops *target;  /* target operations */
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    int stopbits;               /* number of stop bits */
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    char **regnames;            /* array of register names in ascii */
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                                /* deprecated: use regname instead */
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    const char *(*regname) (int index);
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                                /* function for dynamic regname array */
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    int num_breakpoints;        /* If set_break != NULL, number of supported
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                                   breakpoints */
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    int magic;                  /* Check value */
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  };
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/* The monitor ops magic number, used to detect if an ops structure doesn't
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   have the right number of entries filled in. */
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#define MONITOR_OPS_MAGIC 600925
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/* Flag definitions. */
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/* If set, then clear breakpoint command uses address, otherwise it
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   uses an index returned by the monitor.  */
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#define MO_CLR_BREAK_USES_ADDR 0x1
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/* If set, then memory fill command uses STARTADDR, ENDADDR+1, VALUE
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   as args, else it uses STARTADDR, LENGTH, VALUE as args. */
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#define MO_FILL_USES_ADDR 0x2
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/* If set, then monitor doesn't automatically supply register dump
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   when coming back after a continue.  */
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#define MO_NEED_REGDUMP_AFTER_CONT 0x4
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/* getmem needs start addr and end addr */
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#define MO_GETMEM_NEEDS_RANGE 0x8
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/* getmem can only read one loc at a time */
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#define MO_GETMEM_READ_SINGLE 0x10
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/* handle \r\n combinations */
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#define MO_HANDLE_NL 0x20
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/* don't expect echos in monitor_open */
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#define MO_NO_ECHO_ON_OPEN 0x40
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/* If set, send break to stop monitor */
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#define MO_SEND_BREAK_ON_STOP 0x80
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/* If set, target sends an ACK after each S-record */
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#define MO_SREC_ACK 0x100
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/* Allow 0x prefix on addresses retured from monitor */
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#define MO_HEX_PREFIX 0x200
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/* Some monitors require a different command when starting a program */
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#define MO_RUN_FIRST_TIME 0x400
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/* Don't expect echos when getting memory */
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#define MO_NO_ECHO_ON_SETMEM 0x800
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/* If set, then register store command expects value BEFORE regname */
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#define MO_REGISTER_VALUE_FIRST 0x1000
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/* If set, then the monitor displays registers as pairs.  */
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#define MO_32_REGS_PAIRED 0x2000
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/* If set, then register setting happens interactively.  */
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#define MO_SETREG_INTERACTIVE 0x4000
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/* If set, then memory setting happens interactively.  */
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#define MO_SETMEM_INTERACTIVE 0x8000
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/* If set, then memory dumps are always on 16-byte boundaries, even
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   when less is desired.  */
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#define MO_GETMEM_16_BOUNDARY 0x10000
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/* If set, then the monitor numbers its breakpoints starting from 1.  */
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#define MO_CLR_BREAK_1_BASED 0x20000
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/* If set, then the monitor acks srecords with a plus sign.  */
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#define MO_SREC_ACK_PLUS 0x40000
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/* If set, then the monitor "acks" srecords with rotating lines.  */
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#define MO_SREC_ACK_ROTATE 0x80000
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/* If set, then remove useless address bits from memory addresses.  */
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#define MO_ADDR_BITS_REMOVE 0x100000
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/* If set, then display target program output if prefixed by ^O.  */
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#define MO_PRINT_PROGRAM_OUTPUT 0x200000
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/* Some dump bytes commands align the first data with the preceeding
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   16 byte boundary. Some print blanks and start at the exactly the
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   requested boundary. */
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#define MO_EXACT_DUMPADDR 0x400000
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/* Rather entering and exiting the write memory dialog for each word byte,
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   we can save time by transferring the whole block without exiting
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   the memory editing mode. You only need to worry about this
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   if you are doing memory downloading.
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   This engages a new write function registered with dcache.
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 */
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#define MO_HAS_BLOCKWRITES 0x800000
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#define SREC_SIZE 160
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extern void monitor_open (char *args, struct monitor_ops *ops, int from_tty);
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extern void monitor_close (int quitting);
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extern char *monitor_supply_register (struct regcache *regcache,
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                                      int regno, char *valstr);
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extern int monitor_expect (char *prompt, char *buf, int buflen);
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extern int monitor_expect_prompt (char *buf, int buflen);
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/* Note: The variable argument functions monitor_printf and
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   monitor_printf_noecho vararg do not take take standard format style
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   arguments.  Instead they take custom formats interpretered directly
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   by monitor_vsprintf.  */
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extern void monitor_printf (char *, ...);
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extern void monitor_printf_noecho (char *, ...);
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extern void monitor_write (char *buf, int buflen);
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extern int monitor_readchar (void);
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extern char *monitor_get_dev_name (void);
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extern void init_monitor_ops (struct target_ops *);
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extern int monitor_dump_reg_block (struct regcache *regcache, char *dump_cmd);
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#endif

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