Copyright. Backtrace for non-optimized code from Theo. Will get replaced

son enough.

1 files changed, 52 insertions, 18 deletions

diff --git a/sys/arch/alpha/alpha/db_trace.c b/sys/arch/alpha/alpha/db_trace.c
index 86996a3cc71..0873eb30872 100644
--- a/sys/arch/alpha/alpha/db_trace.c
+++ b/sys/arch/alpha/alpha/db_trace.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: db_trace.c,v 1.1 1997/07/06 16:31:14 niklas Exp $	*/
+/*	$OpenBSD: db_trace.c,v 1.2 1997/07/08 20:33:40 niklas Exp $	*/
 
 /*
  * Copyright (c) 1997 Niklas Hallqvist.  All rights reserverd.
@@ -13,23 +13,20 @@
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
+ *	This product includes software developed by Niklas Hallqvist.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ * 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/types.h>
@@ -37,8 +34,18 @@
 
 #include <machine/db_machdep.h>
 
+#include <ddb/db_access.h>
+#include <ddb/db_command.h>
+#include <ddb/db_output.h>
+#include <ddb/db_sym.h>
+#include <ddb/db_variables.h>
+#include <ddb/db_extern.h>
 #include <ddb/db_interface.h>
 
+/*
+ * XXX This is not yet functional on optimized code.
+ * However it might be useful for you if you turn off debugging.
+ */
 void
 db_stack_trace_cmd(addr, have_addr, count, modif)
 	db_expr_t       addr;
@@ -46,5 +53,32 @@ db_stack_trace_cmd(addr, have_addr, count, modif)
 	db_expr_t       count;
 	char            *modif;
 {
-	printf("trace not implemented yet\n");
+	u_long		*frame;
+	int		i;
+	db_addr_t	pc;
+
+	if (count == -1)
+		count = 65535;
+
+	if (!have_addr)
+		frame = (u_long *)ddb_regs.tf_regs[FRAME_SP];
+	else
+		frame = (u_long *)addr;
+
+	while (count--) {
+		db_printf("frame %p: \n", frame);
+		pc = frame[0];
+		db_printf("%lx(", pc);
+
+		/*
+		 * Print first possible arguments... like 6 of 'em.
+		 */
+		for (i = 0; i < 6; i++)
+			db_printf("%lx, ", frame[2+i]);
+		db_printf(") at ");
+		db_printsym(pc, DB_STGY_PROC);
+		db_printf("\n");
+
+		frame = (u_long *)frame[1];
+	}
 }