[src/chs-ubc2]: src/sys/arch/sparc/sparc from the trunk: add "trace/t <pid>".

[chs <chs%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3a66a2bfed97
branches:  chs-ubc2
changeset: 471387:3a66a2bfed97
user:      chs <chs%NetBSD.org@localhost>
date:      Sun Jul 04 06:46:16 1999 +0000

description:
from the trunk:  add "trace/t <pid>".

diffstat:

 sys/arch/sparc/sparc/db_trace.c |  38 ++++++++++++++++++++++++++++++--------
 1 files changed, 30 insertions(+), 8 deletions(-)

diffs (67 lines):

diff -r f3747449a761 -r 3a66a2bfed97 sys/arch/sparc/sparc/db_trace.c
--- a/sys/arch/sparc/sparc/db_trace.c   Sun Jul 04 04:41:10 1999 +0000
+++ b/sys/arch/sparc/sparc/db_trace.c   Sun Jul 04 06:46:16 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: db_trace.c,v 1.10.6.2.2.1 1999/06/21 01:01:47 thorpej Exp $ */
+/*     $NetBSD: db_trace.c,v 1.10.6.2.2.2 1999/07/04 06:46:16 chs Exp $ */
 
 /*
  * Mach Operating System
@@ -28,6 +28,7 @@
 
 #include <sys/param.h>
 #include <sys/proc.h>
+#include <sys/user.h>
 #include <machine/db_machdep.h>
 
 #include <ddb/db_access.h>
@@ -46,12 +47,14 @@
 {
        struct frame    *frame;
        boolean_t       kernel_only = TRUE;
+       boolean_t       trace_thread = FALSE;
+       char            c, *cp = modif;
 
-       {
-               register char c, *cp = modif;
-               while ((c = *cp++) != 0)
-                       if (c == 'u')
-                               kernel_only = FALSE;
+       while ((c = *cp++) != 0) {
+               if (c == 't')
+                       trace_thread = TRUE;
+               if (c == 'u')
+                       kernel_only = FALSE;
        }
 
        if (count == -1)
@@ -59,8 +62,27 @@
 
        if (!have_addr)
                frame = (struct frame *)DDB_TF->tf_out[6];
-       else
-               frame = (struct frame *)addr;
+       else {
+               if (trace_thread) {
+                       struct proc *p;
+                       struct user *u;
+                       db_printf ("trace: pid %d ", (int)addr);
+                       p = pfind(addr);
+                       if (p == NULL) {
+                               db_printf("not found\n");
+                               return;
+                       }       
+                       if ((p->p_flag & P_INMEM) == 0) {
+                               db_printf("swapped out\n");
+                               return;
+                       }
+                       u = p->p_addr;
+                       frame = (struct frame *)u->u_pcb.pcb_sp;
+                       db_printf("at %p\n", frame);
+               } else {
+                       frame = (struct frame *)addr;
+               }
+       }
 
        while (count--) {
                int             i;