179 lines
6.1 KiB
C
179 lines
6.1 KiB
C
/* Remote debugging interface to dBUG ROM monitor for GDB, the GNU debugger.
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Copyright (C) 1996, 1998, 1999, 2000, 2001, 2007, 2008
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Free Software Foundation, Inc.
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Written by Stan Shebs 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
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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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/* dBUG is a monitor supplied on various Motorola boards, including
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m68k, ColdFire, and PowerPC-based designs. The code here assumes
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the ColdFire, and (as of 9/25/96) has only been tested with a
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ColdFire IDP board. */
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#include "defs.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "monitor.h"
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#include "serial.h"
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#include "regcache.h"
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#include "m68k-tdep.h"
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static void dbug_open (char *args, int from_tty);
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static void
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dbug_supply_register (struct regcache *regcache, char *regname,
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int regnamelen, char *val, int vallen)
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{
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int regno;
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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if (regnamelen != 2)
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return;
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switch (regname[0])
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{
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case 'S':
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if (regname[1] != 'R')
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return;
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regno = gdbarch_ps_regnum (gdbarch);
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break;
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case 'P':
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if (regname[1] != 'C')
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return;
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regno = gdbarch_pc_regnum (gdbarch);
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break;
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case 'D':
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if (regname[1] < '0' || regname[1] > '7')
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return;
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regno = regname[1] - '0' + M68K_D0_REGNUM;
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break;
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case 'A':
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if (regname[1] < '0' || regname[1] > '7')
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return;
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regno = regname[1] - '0' + M68K_A0_REGNUM;
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break;
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default:
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return;
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}
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monitor_supply_register (regcache, regno, val);
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}
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/* This array of registers needs to match the indexes used by GDB. The
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whole reason this exists is because the various ROM monitors use
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different names than GDB does, and don't support all the registers
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either. So, typing "info reg sp" becomes an "A7". */
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static const char *
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dbug_regname (int index)
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{
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static char *regnames[] =
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{
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"D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
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"A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
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"SR", "PC"
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/* no float registers */
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};
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if ((index >= (sizeof (regnames) / sizeof (regnames[0])))
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|| (index < 0) || (index >= gdbarch_num_regs (current_gdbarch)))
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return NULL;
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else
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return regnames[index];
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}
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static struct target_ops dbug_ops;
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static struct monitor_ops dbug_cmds;
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static char *dbug_inits[] =
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{"\r", NULL};
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static void
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init_dbug_cmds (void)
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{
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dbug_cmds.flags = MO_CLR_BREAK_USES_ADDR | MO_GETMEM_NEEDS_RANGE | MO_FILL_USES_ADDR;
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dbug_cmds.init = dbug_inits; /* Init strings */
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dbug_cmds.cont = "go\r"; /* continue command */
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dbug_cmds.step = "trace\r"; /* single step */
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dbug_cmds.stop = NULL; /* interrupt command */
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dbug_cmds.set_break = "br %x\r"; /* set a breakpoint */
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dbug_cmds.clr_break = "br -r %x\r"; /* clear a breakpoint */
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dbug_cmds.clr_all_break = "br -r\r"; /* clear all breakpoints */
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dbug_cmds.fill = "bf.b %x %x %x\r"; /* fill (start end val) */
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dbug_cmds.setmem.cmdb = "mm.b %x %x\r"; /* setmem.cmdb (addr, value) */
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dbug_cmds.setmem.cmdw = "mm.w %x %x\r"; /* setmem.cmdw (addr, value) */
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dbug_cmds.setmem.cmdl = "mm.l %x %x\r"; /* setmem.cmdl (addr, value) */
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dbug_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */
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dbug_cmds.setmem.resp_delim = NULL; /* setmem.resp_delim */
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dbug_cmds.setmem.term = NULL; /* setmem.term */
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dbug_cmds.setmem.term_cmd = NULL; /* setmem.term_cmd */
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dbug_cmds.getmem.cmdb = "md.b %x %x\r"; /* getmem.cmdb (addr, addr2) */
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dbug_cmds.getmem.cmdw = "md.w %x %x\r"; /* getmem.cmdw (addr, addr2) */
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dbug_cmds.getmem.cmdl = "md.l %x %x\r"; /* getmem.cmdl (addr, addr2) */
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dbug_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, addr2) */
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dbug_cmds.getmem.resp_delim = ":"; /* getmem.resp_delim */
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dbug_cmds.getmem.term = NULL; /* getmem.term */
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dbug_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */
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dbug_cmds.setreg.cmd = "rm %s %x\r"; /* setreg.cmd (name, value) */
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dbug_cmds.setreg.resp_delim = NULL; /* setreg.resp_delim */
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dbug_cmds.setreg.term = NULL; /* setreg.term */
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dbug_cmds.setreg.term_cmd = NULL; /* setreg.term_cmd */
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dbug_cmds.getreg.cmd = "rd %s\r"; /* getreg.cmd (name) */
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dbug_cmds.getreg.resp_delim = ":"; /* getreg.resp_delim */
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dbug_cmds.getreg.term = NULL; /* getreg.term */
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dbug_cmds.getreg.term_cmd = NULL; /* getreg.term_cmd */
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dbug_cmds.dump_registers = "rd\r"; /* dump_registers */
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dbug_cmds.register_pattern = "\\(\\w+\\) +:\\([0-9a-fA-F]+\\b\\)"; /* register_pattern */
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dbug_cmds.supply_register = dbug_supply_register;
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dbug_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */
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dbug_cmds.load = "dl\r"; /* download command */
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dbug_cmds.loadresp = "\n"; /* load response */
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dbug_cmds.prompt = "dBUG>"; /* monitor command prompt */
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dbug_cmds.line_term = "\r"; /* end-of-line terminator */
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dbug_cmds.cmd_end = NULL; /* optional command terminator */
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dbug_cmds.target = &dbug_ops; /* target operations */
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dbug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */
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dbug_cmds.regnames = NULL; /* registers names */
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dbug_cmds.regname = dbug_regname;
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dbug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */
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} /* init_debug_ops */
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static void
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dbug_open (char *args, int from_tty)
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{
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monitor_open (args, &dbug_cmds, from_tty);
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}
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extern initialize_file_ftype _initialize_dbug_rom; /* -Wmissing-prototypes */
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void
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_initialize_dbug_rom (void)
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{
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init_dbug_cmds ();
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init_monitor_ops (&dbug_ops);
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dbug_ops.to_shortname = "dbug";
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dbug_ops.to_longname = "dBUG monitor";
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dbug_ops.to_doc = "Debug via the dBUG monitor.\n\
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Specify the serial device it is connected to (e.g. /dev/ttya).";
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dbug_ops.to_open = dbug_open;
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add_target (&dbug_ops);
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}
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