+struct target_waitstatus;
+struct serial;
+
+/* This structure describes the strings necessary to give small command
+ sequences to the monitor, and parse the response.
+
+ CMD is the actual command typed at the monitor. Usually this has
+ embedded sequences ala printf, which are substituted with the
+ arguments appropriate to that type of command. Ie: to examine a
+ register, we substitute the register name for the first arg. To
+ modify memory, we substitute the memory location and the new
+ contents for the first and second args, etc...
+
+ RESP_DELIM used to home in on the response string, and is used to
+ disambiguate the answer within the pile of text returned by the
+ monitor. This should be a unique string that immediately precedes
+ the answer. Ie: if your monitor prints out `PC: 00000001= ' in
+ response to asking for the PC, you should use `: ' as the
+ RESP_DELIM. RESP_DELIM may be NULL if the res- ponse is going to
+ be ignored, or has no particular leading text.
+
+ TERM is the string that the monitor outputs to indicate that it is
+ idle, and waiting for input. This is usually a prompt of some
+ sort. In the previous example, it would be `= '. It is important
+ that TERM really means that the monitor is idle, otherwise GDB may
+ try to type at it when it isn't ready for input. This is a problem
+ because many monitors cannot deal with type-ahead. TERM may be
+ NULL if the normal prompt is output.
+
+ TERM_CMD is used to quit out of the subcommand mode and get back to
+ the main prompt. TERM_CMD may be NULL if it isn't necessary. It
+ will also be ignored if TERM is NULL. */
+
+struct memrw_cmd
+ {
+ char *cmdb; /* Command to send for byte read/write */
+ char *cmdw; /* Command for word (16 bit) read/write */
+ char *cmdl; /* Command for long (32 bit) read/write */
+ char *cmdll; /* Command for long long (64 bit) read/write */
+ char *resp_delim; /* String just prior to the desired value */
+ char *term; /* Terminating string to search for */
+ char *term_cmd; /* String to get out of sub-mode (if necessary) */
+ };
+
+struct regrw_cmd
+ {
+ char *cmd; /* Command to send for reg read/write */
+ char *resp_delim; /* String (actually a regexp if getmem) just
+ prior to the desired value */
+ char *term; /* Terminating string to search for */
+ char *term_cmd; /* String to get out of sub-mode (if necessary) */
+ };
+
+struct monitor_ops
+ {
+ int flags; /* See below */
+ char **init; /* List of init commands. NULL terminated. */
+ char *cont; /* continue command */
+ char *step; /* single step */
+ char *stop; /* Interrupt program string */
+ char *set_break; /* set a breakpoint. If NULL, monitor implementation
+ sets its own to_insert_breakpoint method. */
+ char *clr_break; /* clear a breakpoint */
+ char *clr_all_break; /* Clear all breakpoints */
+ char *fill; /* Memory fill cmd (addr len val) */
+ struct memrw_cmd setmem; /* set memory to a value */
+ struct memrw_cmd getmem; /* display memory */
+ struct regrw_cmd setreg; /* set a register */
+ struct regrw_cmd getreg; /* get a register */
+ /* Some commands can dump a bunch of registers
+ at once. This comes as a set of REG=VAL
+ pairs. This should be called for each pair
+ of registers that we can parse to supply
+ GDB with the value of a register. */
+ char *dump_registers; /* Command to dump all regs at once */
+ char *register_pattern; /* Pattern that picks out register from reg dump */
+ void (*supply_register) (struct regcache *regcache, char *name,
+ int namelen, char *val, int vallen);
+ void (*load_routine) (struct serial *desc, char *file,
+ int hashmark); /* Download routine */
+ int (*dumpregs) (struct regcache *); /* Dump all registers */
+ int (*continue_hook) (void); /* Emit the continue command */
+ int (*wait_filter) (char *buf, /* Maybe contains registers */
+ int bufmax,
+ int *response_length,
+ struct target_waitstatus * status);
+ char *load; /* load command */
+ char *loadresp; /* Response to load command */
+ char *prompt; /* monitor command prompt */
+ char *line_term; /* end-of-command delimitor */
+ char *cmd_end; /* optional command terminator */
+ struct target_ops *target; /* target operations */
+ int stopbits; /* number of stop bits */
+ char **regnames; /* array of register names in ascii */
+ /* deprecated: use regname instead */
+ const char *(*regname) (int index);
+ /* function for dynamic regname array */
+ int num_breakpoints; /* If set_break != NULL, number of supported
+ breakpoints */
+ int magic; /* Check value */
+ };
+
+/* The monitor ops magic number, used to detect if an ops structure doesn't
+ have the right number of entries filled in. */
+
+#define MONITOR_OPS_MAGIC 600925
+
+/* Flag definitions. */
+
+/* If set, then clear breakpoint command uses address, otherwise it
+ uses an index returned by the monitor. */
+
+#define MO_CLR_BREAK_USES_ADDR 0x1
+
+/* If set, then memory fill command uses STARTADDR, ENDADDR+1, VALUE
+ as args, else it uses STARTADDR, LENGTH, VALUE as args. */
+
+#define MO_FILL_USES_ADDR 0x2
+
+/* If set, then monitor doesn't automatically supply register dump
+ when coming back after a continue. */
+
+#define MO_NEED_REGDUMP_AFTER_CONT 0x4
+
+/* getmem needs start addr and end addr */
+
+#define MO_GETMEM_NEEDS_RANGE 0x8
+
+/* getmem can only read one loc at a time */
+
+#define MO_GETMEM_READ_SINGLE 0x10
+
+/* handle \r\n combinations */
+
+#define MO_HANDLE_NL 0x20
+
+/* don't expect echos in monitor_open */
+
+#define MO_NO_ECHO_ON_OPEN 0x40
+
+/* If set, send break to stop monitor */
+
+#define MO_SEND_BREAK_ON_STOP 0x80
+
+/* If set, target sends an ACK after each S-record */