Preliminary m68k pmdb support.

Currently, this works as well as gdb, i.e. breakpoints do not work. Will
be fixed soon, hopefully.

3 files changed, 120 insertions, 0 deletions

diff --git a/usr.bin/pmdb/arch/m68k/Makefile.inc b/usr.bin/pmdb/arch/m68k/Makefile.inc
new file mode 100644
index 00000000000..3c2ddd281f7
--- /dev/null
+++ b/usr.bin/pmdb/arch/m68k/Makefile.inc
@@ -0,0 +1,3 @@
+#	$OpenBSD: Makefile.inc,v 1.1 2003/05/30 19:32:53 miod Exp $
+
+SRCS+=	m68k.c
diff --git a/usr.bin/pmdb/arch/m68k/m68k.c b/usr.bin/pmdb/arch/m68k/m68k.c
new file mode 100644
index 00000000000..b502ce080c0
--- /dev/null
+++ b/usr.bin/pmdb/arch/m68k/m68k.c
@@ -0,0 +1,86 @@
+/*	$OpenBSD: m68k.c,v 1.1 2003/05/30 19:32:53 miod Exp $	*/
+/*
+ * Copyright (c) 2003, Miodrag Vallat.
+ * 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.
+ *
+ */
+
+#include <sys/param.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+#include <machine/frame.h>
+#include "pmdb.h"
+
+static const char *md_reg_names[] = {
+	"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7",
+	"%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%a7",
+	"%sr", "%pc"
+};
+
+struct md_def md_def = { md_reg_names, 18, 17 };
+
+void
+md_def_init(void)
+{
+	/* nothing to do */
+}
+
+int
+md_getframe(struct pstate *ps, int framenum, struct md_frame *fram)
+{
+	struct frame fr;
+	struct reg r;
+	int count;
+
+	if (process_getregs(ps, &r) != 0)
+		return (-1);
+
+	fr.f_regs[15] = r.r_regs[15];	/* a7 */
+	fr.f_pc = r.r_pc;
+	for (count = 0; count < framenum; count++) {
+		if (process_read(ps, fr.f_regs[15], &fr, sizeof(fr)) < 0)
+			return (-1);
+
+		if (fr.f_pc < 0x1000)
+			return (-1);
+	}
+
+	fram->pc = fr.f_pc;
+	fram->fp = fr.f_regs[15];
+
+	return (0);
+}
+
+int
+md_getregs(struct pstate *ps, reg *regs)
+{
+	struct reg r;
+
+	if (process_getregs(ps, &r) != 0)
+		return (-1);
+
+	memcpy(regs, &r, sizeof(r));
+
+	return (0);
+}
diff --git a/usr.bin/pmdb/arch/m68k/pmdb_machdep.h b/usr.bin/pmdb/arch/m68k/pmdb_machdep.h
new file mode 100644
index 00000000000..a7b358f0882
--- /dev/null
+++ b/usr.bin/pmdb/arch/m68k/pmdb_machdep.h
@@ -0,0 +1,31 @@
+/*	$OpenBSD: pmdb_machdep.h,v 1.1 2003/05/30 19:32:53 miod Exp $	*/
+/*
+ * Copyright (c) 2003, Miodrag Vallat.
+ * 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.
+ *
+ */
+
+#define BREAKPOINT		{ 0x4e, 0x4f }
+#define BREAKPOINT_LEN		2
+#define BREAKPOINT_DECR_PC	2