Introduce the GDB debugger backend for the new KDB framework. The

backend improves over the old GDB support in the following ways:
o  Unified implementation with minimal MD code.
o  A simple interface for devices to register themselves as debug
   ports, ala consoles.
o  Compression by using run-length encoding.
o  Implements GDB threading support.

1 files changed, 62 insertions, 0 deletions

diff --git a/sys/gdb/gdb.h b/sys/gdb/gdb.h
new file mode 100644
index 0000000..a7a5429
--- /dev/null
+++ b/sys/gdb/gdb.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2004 Marcel Moolenaar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _GDB_GDB_H_
+#define	_GDB_GDB_H_
+
+typedef int gdb_checkc_f(void);
+typedef int gdb_getc_f(void);
+typedef void gdb_init_f(void);
+typedef int gdb_probe_f(void);
+typedef void gdb_putc_f(int);
+typedef void gdb_term_f(void);
+
+struct gdb_dbgport {
+	const char	*gdb_name;
+	gdb_checkc_f	*gdb_checkc;
+	gdb_getc_f	*gdb_getc;
+	gdb_init_f	*gdb_init;
+	gdb_probe_f	*gdb_probe;
+	gdb_putc_f	*gdb_putc;
+	gdb_term_f	*gdb_term;
+	int		gdb_active;
+};
+
+#define	GDB_DBGPORT(name, probe, init, term, checkc, getc, putc)	\
+	static struct gdb_dbgport name##_gdb_dbgport = {		\
+		.gdb_name = #name,					\
+		.gdb_checkc = checkc,					\
+		.gdb_getc = getc,					\
+		.gdb_init = init,					\
+		.gdb_probe = probe,					\
+		.gdb_putc = putc,					\
+		.gdb_term = term					\
+	};								\
+	DATA_SET(gdb_dbgport_set, name##_gdb_dbgport)
+
+#endif /* !_GDB_GDB_H_ */