binutils-gdb/gdb/abug-rom.c

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/* Remote debugging interface for ABug Rom monitor for GDB, the GNU debugger.
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Copyright 1995, 1996, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
Written by Rob Savoye of Cygnus Support
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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
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.
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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.
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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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "gdbcore.h"
#include "target.h"
#include "monitor.h"
#include "serial.h"
#include "regcache.h"
#include "m68k-tdep.h"
/* Prototypes for local functions. */
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static void abug_open (char *args, int from_tty);
static void
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abug_supply_register (char *regname, int regnamelen, char *val, int vallen)
{
int regno;
if (regnamelen != 2)
return;
switch (regname[0])
{
case 'S':
if (regname[1] != 'R')
return;
regno = PS_REGNUM;
break;
case 'P':
if (regname[1] != 'C')
return;
regno = PC_REGNUM;
break;
case 'D':
if (regname[1] < '0' || regname[1] > '7')
return;
regno = regname[1] - '0' + M68K_D0_REGNUM;
break;
case 'A':
if (regname[1] < '0' || regname[1] > '7')
return;
regno = regname[1] - '0' + M68K_A0_REGNUM;
break;
default:
return;
}
monitor_supply_register (regno, val);
}
/*
* 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 an "A7".
*/
static const char *
abug_regname (int index)
{
static char *regnames[] =
{
"D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
"A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
"PC",
};
if ((index >= (sizeof (regnames) / sizeof (regnames[0])))
|| (index < 0) || (index >= NUM_REGS))
return NULL;
else
return regnames[index];
}
/*
* 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 abug_ops;
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static char *abug_inits[] =
{"\r", NULL};
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static struct monitor_ops abug_cmds;
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static void
init_abug_cmds (void)
{
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abug_cmds.flags = MO_CLR_BREAK_USES_ADDR;
abug_cmds.init = abug_inits; /* Init strings */
abug_cmds.cont = "g\r"; /* continue command */
abug_cmds.step = "t\r"; /* single step */
abug_cmds.stop = NULL; /* interrupt command */
abug_cmds.set_break = "br %x\r"; /* set a breakpoint */
abug_cmds.clr_break = "nobr %x\r"; /* clear a breakpoint */
abug_cmds.clr_all_break = "nobr\r"; /* clear all breakpoints */
abug_cmds.fill = "bf %x:%x %x;b\r"; /* fill (start count val) */
abug_cmds.setmem.cmdb = "ms %x %02x\r"; /* setmem.cmdb (addr, value) */
abug_cmds.setmem.cmdw = "ms %x %04x\r"; /* setmem.cmdw (addr, value) */
abug_cmds.setmem.cmdl = "ms %x %08x\r"; /* setmem.cmdl (addr, value) */
abug_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */
abug_cmds.setmem.resp_delim = NULL; /* setreg.resp_delim */
abug_cmds.setmem.term = NULL; /* setreg.term */
abug_cmds.setmem.term_cmd = NULL; /* setreg.term_cmd */
abug_cmds.getmem.cmdb = "md %x:%x;b\r"; /* getmem.cmdb (addr, len) */
abug_cmds.getmem.cmdw = "md %x:%x;b\r"; /* getmem.cmdw (addr, len) */
abug_cmds.getmem.cmdl = "md %x:%x;b\r"; /* getmem.cmdl (addr, len) */
abug_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, len) */
abug_cmds.getmem.resp_delim = " "; /* getmem.resp_delim */
abug_cmds.getmem.term = NULL; /* getmem.term */
abug_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */
abug_cmds.setreg.cmd = "rm %s %x\r"; /* setreg.cmd (name, value) */
abug_cmds.setreg.resp_delim = "="; /* setreg.resp_delim */
abug_cmds.setreg.term = "? "; /* setreg.term */
abug_cmds.setreg.term_cmd = ".\r"; /* setreg.term_cmd */
abug_cmds.getreg.cmd = "rm %s\r"; /* getreg.cmd (name) */
abug_cmds.getreg.resp_delim = "="; /* getreg.resp_delim */
abug_cmds.getreg.term = "? "; /* getreg.term */
abug_cmds.getreg.term_cmd = ".\r"; /* getreg.term_cmd */
abug_cmds.dump_registers = "rd\r"; /* dump_registers */
abug_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)"; /* register_pattern */
abug_cmds.supply_register = abug_supply_register; /* supply_register */
abug_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */
abug_cmds.load = "lo 0\r"; /* download command */
abug_cmds.loadresp = "\n"; /* load response */
abug_cmds.prompt = "135Bug>"; /* monitor command prompt */
abug_cmds.line_term = "\r"; /* end-of-line terminator */
abug_cmds.cmd_end = NULL; /* optional command terminator */
abug_cmds.target = &abug_ops; /* target operations */
abug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */
abug_cmds.regnames = NULL; /* registers names */
abug_cmds.regname = abug_regname;
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abug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */
};
static void
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abug_open (char *args, int from_tty)
{
monitor_open (args, &abug_cmds, from_tty);
}
void
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_initialize_abug_rom (void)
{
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init_abug_cmds ();
init_monitor_ops (&abug_ops);
abug_ops.to_shortname = "abug";
abug_ops.to_longname = "ABug monitor";
abug_ops.to_doc = "Debug via the ABug monitor.\n\
Specify the serial device it is connected to (e.g. /dev/ttya).";
abug_ops.to_open = abug_open;
add_target (&abug_ops);
}