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authorRob Savoye <rob@cygnus>1996-05-09 18:39:15 +0000
committerRob Savoye <rob@cygnus>1996-05-09 18:39:15 +0000
commit7574859fbaf7386f6bfcd99538774451eab3ec7a (patch)
tree04659e94458fe8628714e99ac2ebc8e7645b99fb /gdb/abug-rom.c
parent01d8a35928602b9262b571e82bc5c2a8d2fbcbb3 (diff)
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* abug-rom.c: Config file for the older style ABug monitor thatg
runs on the mvme13x boards. * config/m68k/monitor.mt: Add abug support for m68k croos debugging.
Diffstat (limited to 'gdb/abug-rom.c')
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diff --git a/gdb/abug-rom.c b/gdb/abug-rom.c
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+/* Remote debugging interface for ABug Rom monitor for GDB, the GNU debugger.
+ Copyright 1995, 1996 Free Software Foundation, Inc.
+
+ Written by Rob Savoye of Cygnus Support
+
+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., 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"
+
+static void abug_open PARAMS ((char *args, int from_tty));
+
+static void
+abug_supply_register (regname, regnamelen, val, vallen)
+ 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' + D0_REGNUM;
+ break;
+ case 'A':
+ if (regname[1] < '0' || regname[1] > '7')
+ return;
+ regno = regname[1] - '0' + 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 char *abug_regnames[NUM_REGS] =
+{
+ "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
+ "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
+ "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 abug_ops;
+
+static char *abug_inits[] = {"\r", NULL};
+
+static struct monitor_ops abug_cmds =
+{
+ MO_CLR_BREAK_USES_ADDR,
+ abug_inits, /* Init strings */
+ "g\r", /* continue command */
+ "t\r", /* single step */
+ NULL, /* interrupt command */
+ "br %x\r", /* set a breakpoint */
+ "nobr %x\r", /* clear a breakpoint */
+ "nobr\r", /* clear all breakpoints */
+ "bf %x:%x %x;b\r", /* fill (start count val) */
+ {
+ "ms %x %02x\r", /* setmem.cmdb (addr, value) */
+ "ms %x %04x\r", /* setmem.cmdw (addr, value) */
+ "ms %x %08x\r", /* setmem.cmdl (addr, value) */
+ NULL, /* setmem.cmdll (addr, value) */
+ NULL, /* setreg.resp_delim */
+ NULL, /* setreg.term */
+ NULL, /* setreg.term_cmd */
+ },
+ {
+ "md %x:%x;b\r", /* getmem.cmdb (addr, len) */
+ "md %x:%x;b\r", /* getmem.cmdw (addr, len) */
+ "md %x:%x;b\r", /* getmem.cmdl (addr, len) */
+ NULL, /* getmem.cmdll (addr, len) */
+ " ", /* getmem.resp_delim */
+ NULL, /* getmem.term */
+ NULL, /* getmem.term_cmd */
+ },
+ {
+ "rm %s %x\r", /* setreg.cmd (name, value) */
+ "=", /* setreg.resp_delim */
+ "? ", /* setreg.term */
+ ".\r" /* setreg.term_cmd */
+ },
+ {
+ "rm %s\r", /* getreg.cmd (name) */
+ "=", /* getreg.resp_delim */
+ "? ", /* getreg.term */
+ ".\r" /* getreg.term_cmd */
+ },
+ "rd\r", /* dump_registers */
+ "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)", /* register_pattern */
+ abug_supply_register, /* supply_register */
+ NULL, /* load_routine (defaults to SRECs) */
+ "lo 0\r", /* download command */
+ "\n", /* load response */
+ "135Bug>", /* monitor command prompt */
+ "\r", /* end-of-line terminator */
+ NULL, /* optional command terminator */
+ &abug_ops, /* target operations */
+ SERIAL_1_STOPBITS, /* number of stop bits */
+ abug_regnames, /* registers names */
+ MONITOR_OPS_MAGIC /* magic */
+ };
+
+static void
+abug_open(args, from_tty)
+ char *args;
+ int from_tty;
+{
+ monitor_open (args, &abug_cmds, from_tty);
+}
+
+void
+_initialize_abug_rom ()
+{
+ 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);
+}