253 lines
9.2 KiB
C++
253 lines
9.2 KiB
C++
/* Definitions for remote debugging interface for ROM monitors.
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Copyright 1990, 1991, 1992, 1996 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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include "serial.h"
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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) PARAMS ((char *name, int namelen,
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char *val, int vallen));
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void (*load_routine) PARAMS ((serial_t desc, char *file,
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int hashmark)); /* Download routine */
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int (*dumpregs) PARAMS ((void)); /* routine to dump all registers */
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int (*continue_hook) PARAMS ((void)); /* Emit the continue command */
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int (*wait_filter) PARAMS ((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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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 PARAMS ((char *args, struct monitor_ops * ops,
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int from_tty));
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extern void monitor_close PARAMS ((int quitting));
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extern char *monitor_supply_register PARAMS ((int regno, char *valstr));
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extern int monitor_expect PARAMS ((char *prompt, char *buf, int buflen));
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extern int monitor_expect_prompt PARAMS ((char *buf, int buflen));
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extern void monitor_printf
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PARAMS ((char *,...))
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ATTR_FORMAT (printf, 1, 2);
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extern void monitor_printf_noecho PARAMS ((char *,...))
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ATTR_FORMAT (printf, 1, 2);
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extern void monitor_write PARAMS ((char *buf, int buflen));
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extern int monitor_readchar PARAMS ((void));
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extern char *monitor_get_dev_name PARAMS ((void));
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extern void init_monitor_ops PARAMS ((struct target_ops *));
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extern int monitor_dump_reg_block PARAMS ((char *dump_cmd));
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extern void flush_monitor_dcache PARAMS ((void));
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