* 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.

1 files changed, 171 insertions, 0 deletions

diff --git a/gdb/abug-rom.c b/gdb/abug-rom.c
new file mode 100644
index 0000000..4c02b96
--- /dev/null
+++ b/gdb/abug-rom.c
@@ -0,0 +1,171 @@
+/* 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);
+}