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Check for frame pointers we can handle (i.e. in kernel space). This prevents

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data faults when tracing proc0's context.
This commit is contained in:
pk 1996-04-04 23:25:35 +00:00
parent 1372d856d7
commit 8e427a346f
1 changed files with 8 additions and 6 deletions
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14
sys/arch/sparc/sparc/db_trace.c
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@ -1,4 +1,4 @@
/* $NetBSD: db_trace.c,v 1.7 1996/03/31 23:45:14 pk Exp $ */
/* $NetBSD: db_trace.c,v 1.8 1996/04/04 23:25:35 pk Exp $ */
/*
* Mach Operating System
@ -72,17 +72,19 @@ db_stack_trace_cmd(addr, have_addr, count, modif)
if (!INKERNEL(pc))
break;
/*
* Switch to frame that contains arguments
*/
frame = frame->fr_fp;
if (!INKERNEL(frame))
break;
db_find_sym_and_offset(pc, &name, &offset);
if (name == NULL)
name = "?";
db_printf("%s(", name);
/*
* Switch to frame that contains arguments
*/
frame = frame->fr_fp;
/*
* Print %i0..%i5, hope these still reflect the
* actual arguments somewhat...