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-rw-r--r--gdb/NEWS4
-rw-r--r--gdb/dbug-rom.c169
2 files changed, 173 insertions, 0 deletions
diff --git a/gdb/NEWS b/gdb/NEWS
index c6c3841..7647fe8 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -7,6 +7,10 @@
Alpha Linux alpha-*-linux*
+* New targets
+
+M68K with dBUG monitor m68*-*-{aout,coff,elf}
+
*** Changes in GDB-4.16:
* New native configurations
diff --git a/gdb/dbug-rom.c b/gdb/dbug-rom.c
new file mode 100644
index 0000000..bffecc7
--- /dev/null
+++ b/gdb/dbug-rom.c
@@ -0,0 +1,169 @@
+/* Remote debugging interface to dBUG ROM monitor for GDB, the GNU debugger.
+ Copyright 1996 Free Software Foundation, Inc.
+
+ Written by Stan Shebs 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. */
+
+/* dBUG is a monitor supplied on various Motorola boards, including
+ m68k, ColdFire, and PowerPC-based designs. The code here assumes
+ the ColdFire, and (as of 9/25/96) has only been tested with a
+ ColdFire IDP board. */
+
+#include "defs.h"
+#include "gdbcore.h"
+#include "target.h"
+#include "monitor.h"
+#include "serial.h"
+
+static void dbug_open PARAMS ((char *args, int from_tty));
+
+static void
+dbug_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 *dbug_regnames[NUM_REGS] =
+{
+ "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
+ "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
+ "SR", "PC"
+ /* no float registers */
+};
+
+static struct target_ops dbug_ops;
+
+static char *dbug_inits[] = {"\r", NULL};
+
+static struct monitor_ops dbug_cmds =
+{
+ MO_CLR_BREAK_USES_ADDR | MO_GETMEM_NEEDS_RANGE | MO_FILL_USES_ADDR,
+ dbug_inits, /* Init strings */
+ "go\r", /* continue command */
+ "step\r", /* single step */
+ NULL, /* interrupt command */
+ "br %x\r", /* set a breakpoint */
+ "br -c %x\r", /* clear a breakpoint */
+ "br -c\r", /* clear all breakpoints */
+ "bf.b %x %x %x", /* fill (start end val) */
+ {
+ "mm.b %x %x\r", /* setmem.cmdb (addr, value) */
+ "mm.w %x %x\r", /* setmem.cmdw (addr, value) */
+ "mm.l %x %x\r", /* setmem.cmdl (addr, value) */
+ NULL, /* setmem.cmdll (addr, value) */
+ NULL, /* setmem.resp_delim */
+ NULL, /* setmem.term */
+ NULL /* setmem.term_cmd */
+ },
+ {
+ "md.b %x %x\r", /* getmem.cmdb (addr, addr2) */
+ "md.w %x %x\r", /* getmem.cmdw (addr, addr2) */
+ "md.l %x %x\r", /* getmem.cmdl (addr, addr2) */
+ NULL, /* getmem.cmdll (addr, addr2) */
+ ":", /* getmem.resp_delim */
+ NULL, /* getmem.term */
+ NULL /* getmem.term_cmd */
+ },
+ {
+ "rm %s %x\r", /* setreg.cmd (name, value) */
+ NULL, /* setreg.resp_delim */
+ NULL, /* setreg.term */
+ NULL /* setreg.term_cmd */
+ },
+ {
+ "rd %s\r", /* getreg.cmd (name) */
+ ":", /* getreg.resp_delim */
+ NULL, /* getreg.term */
+ NULL /* getreg.term_cmd */
+ },
+ "rd\r", /* dump_registers */
+ "\\(\\w+\\) +:\\([0-9a-fA-F]+\\b\\)", /* register_pattern */
+ dbug_supply_register, /* supply_register */
+ NULL, /* load_routine (defaults to SRECs) */
+ "dl\r", /* download command */
+ "\n", /* load response */
+ "dBUG>", /* monitor command prompt */
+ "\r", /* end-of-line terminator */
+ NULL, /* optional command terminator */
+ &dbug_ops, /* target operations */
+ SERIAL_1_STOPBITS, /* number of stop bits */
+ dbug_regnames, /* registers names */
+ MONITOR_OPS_MAGIC /* magic */
+ };
+
+static void
+dbug_open(args, from_tty)
+ char *args;
+ int from_tty;
+{
+ monitor_open (args, &dbug_cmds, from_tty);
+}
+
+void
+_initialize_dbug_rom ()
+{
+ init_monitor_ops (&dbug_ops);
+
+ dbug_ops.to_shortname = "dbug";
+ dbug_ops.to_longname = "dBUG monitor";
+ dbug_ops.to_doc = "Debug via the dBUG monitor.\n\
+Specify the serial device it is connected to (e.g. /dev/ttya).";
+ dbug_ops.to_open = dbug_open;
+
+ add_target (&dbug_ops);
+}