binutils-gdb/gdb/remote-hms.c

/* Remote debugging interface for Renesas HMS Monitor Version 1.0
   Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2007
   Free Software Foundation, Inc.
   Contributed by Cygnus Support.  Written by Steve Chamberlain
   (sac@cygnus.com).

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.  */

#include "defs.h"
#include "gdbcore.h"
#include "target.h"
#include "monitor.h"
#include "serial.h"
#include "regcache.h"

#define CCR_REGNUM 8

static void hms_open (char *args, int from_tty);
static void
hms_supply_register (char *regname, int regnamelen, char *val, int vallen)
{
  int regno;

  if (regnamelen != 2)
    return;
  if (regname[0] != 'P')
    return;
  /* We scan off all the registers in one go */

  val = monitor_supply_register (PC_REGNUM, val);
  /* Skip the ccr string */
  while (*val != '=' && *val)
    val++;

  val = monitor_supply_register (CCR_REGNUM, val + 1);

  /* Skip up to rest of regs */
  while (*val != '=' && *val)
    val++;

  for (regno = 0; regno < 7; regno++)
    {
      val = monitor_supply_register (regno, val + 1);
    }
}

/*
 * This array of registers needs to match the indexes used by GDB. The
 * whole reason this exists is because the various ROM monitors use
 * different names than GDB does, and don't support all the
 * registers either. So, typing "info reg sp" becomes a "r30".
 */

static char *hms_regnames[] =
{
  "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", "CCR", "PC", "", "", "", ""
};

/*
 * Define the monitor command strings. Since these are passed directly
 * through to a printf style function, we need can include formatting
 * strings. We also need a CR or LF on the end.
 */

static struct target_ops hms_ops;

static char *hms_inits[] =
{"\003",			/* Resets the prompt, and clears repeated cmds */
 NULL};

static struct monitor_ops hms_cmds;

static void
init_hms_cmds (void)
{
  hms_cmds.flags = MO_CLR_BREAK_USES_ADDR | MO_FILL_USES_ADDR | MO_GETMEM_NEEDS_RANGE;
  hms_cmds.init = hms_inits;	/* Init strings */
  hms_cmds.cont = "g\r";	/* continue command */
  hms_cmds.step = "s\r";	/* single step */
  hms_cmds.stop = "\003";	/* ^C interrupts the program */
  hms_cmds.set_break = "b %x\r";	/* set a breakpoint */
  hms_cmds.clr_break = "b - %x\r";	/* clear a breakpoint */
  hms_cmds.clr_all_break = "b -\r";	/* clear all breakpoints */
  hms_cmds.fill = "f %x %x %x\r";	/* fill (start end val) */
  hms_cmds.setmem.cmdb = "m.b %x=%x\r";		/* setmem.cmdb (addr, value) */
  hms_cmds.setmem.cmdw = "m.w %x=%x\r";		/* setmem.cmdw (addr, value) */
  hms_cmds.setmem.cmdl = NULL;	/* setmem.cmdl (addr, value) */
  hms_cmds.setmem.cmdll = NULL;	/* setmem.cmdll (addr, value) */
  hms_cmds.setmem.resp_delim = NULL;	/* setreg.resp_delim */
  hms_cmds.setmem.term = NULL;	/* setreg.term */
  hms_cmds.setmem.term_cmd = NULL;	/* setreg.term_cmd */
  hms_cmds.getmem.cmdb = "m.b %x %x\r";		/* getmem.cmdb (addr, addr) */
  hms_cmds.getmem.cmdw = "m.w %x %x\r";		/* getmem.cmdw (addr, addr) */
  hms_cmds.getmem.cmdl = NULL;	/* getmem.cmdl (addr, addr) */
  hms_cmds.getmem.cmdll = NULL;	/* getmem.cmdll (addr, addr) */
  hms_cmds.getmem.resp_delim = ": ";	/* getmem.resp_delim */
  hms_cmds.getmem.term = ">";	/* getmem.term */
  hms_cmds.getmem.term_cmd = "\003";	/* getmem.term_cmd */
  hms_cmds.setreg.cmd = "r %s=%x\r";	/* setreg.cmd (name, value) */
  hms_cmds.setreg.resp_delim = NULL;	/* setreg.resp_delim */
  hms_cmds.setreg.term = NULL;	/* setreg.term */
  hms_cmds.setreg.term_cmd = NULL;	/* setreg.term_cmd */
  hms_cmds.getreg.cmd = "r %s\r";	/* getreg.cmd (name) */
  hms_cmds.getreg.resp_delim = " (";	/* getreg.resp_delim */
  hms_cmds.getreg.term = ":";	/* getreg.term */
  hms_cmds.getreg.term_cmd = "\003";	/* getreg.term_cmd */
  hms_cmds.dump_registers = "r\r";	/* dump_registers */
  hms_cmds.register_pattern = "\\(\\w+\\)=\\([0-9a-fA-F]+\\)";	/* register_pattern */
  hms_cmds.supply_register = hms_supply_register;
  hms_cmds.load_routine = NULL;	/* load_routine (defaults to SRECs) */
  hms_cmds.load = "tl\r";	/* download command */
  hms_cmds.loadresp = NULL;	/* load response */
  hms_cmds.prompt = ">";	/* monitor command prompt */
  hms_cmds.line_term = "\r";	/* end-of-command delimitor */
  hms_cmds.cmd_end = NULL;	/* optional command terminator */
  hms_cmds.target = &hms_ops;	/* target operations */
  hms_cmds.stopbits = SERIAL_1_STOPBITS;	/* number of stop bits */
  hms_cmds.regnames = hms_regnames;	/* registers names */
  hms_cmds.magic = MONITOR_OPS_MAGIC;	/* magic */
}				/* init_hms-cmds */

static void
hms_open (char *args, int from_tty)
{
  monitor_open (args, &hms_cmds, from_tty);
}

int write_dos_tick_delay;

extern initialize_file_ftype _initialize_remote_hms; /* -Wmissing-prototypes */

void
_initialize_remote_hms (void)
{
  init_hms_cmds ();
  init_monitor_ops (&hms_ops);

  hms_ops.to_shortname = "hms";
  hms_ops.to_longname = "Renesas Microsystems H8/300 debug monitor";
  hms_ops.to_doc = "Debug via the HMS monitor.\n\
Specify the serial device it is connected to (e.g. /dev/ttya).";
  hms_ops.to_open = hms_open;
  /* By trial and error I've found that this delay doesn't break things */
  write_dos_tick_delay = 1;
  add_target (&hms_ops);
}