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Don't try to trace back through proc_trampoline.

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This commit is contained in:
scw 2002-10-10 08:53:22 +00:00
parent a3d166c50b
commit bbb7b848b6
1 changed files with 11 additions and 6 deletions
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17
sys/arch/sh5/sh5/db_trace.c
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@ -1,4 +1,4 @@
/* $NetBSD: db_trace.c,v 1.6 2002/09/22 20:31:19 scw Exp $ */
/* $NetBSD: db_trace.c,v 1.7 2002/10/10 08:53:22 scw Exp $ */
/*
* Copyright 2002 Wasabi Systems, Inc.
@ -216,18 +216,23 @@ db_stack_trace_print(db_expr_t addr, int have_addr, db_expr_t count,
(*pr)("\n");
/*
* There really is no point trying to trace back
* through "idle". It has no valid "context" anyway.
* There really is no point trying to trace back through
* "idle" or "proc_trampoline". The former has no valid
* "context" anyway, and the latter is the first function
* called for each new process/kernel thread.
*/
if (strcmp(symp, "idle") == 0)
if (strcmp(symp, "idle") == 0 ||
strcmp(symp, ___STRING(_C_LABEL(proc_trampoline))) == 0) {
pc = fp = SH5_KSEG0_BASE;
break;
}
if (strcmp(symp, "Lsh5_event_sync") == 0 ||
strcmp(symp, "Ltrapagain") == 0 ||
strcmp(symp, "Ltrapepilogue") == 0 ||
strcmp(symp, "Ltrapexit") == 0) {
/*
* We're tracing back through a syncronous exception.
* We're tracing back through a synchronous exception.
* The previous PC and FP are available from the
* 'struct trapframe' saved on the stack.
*/
@ -250,7 +255,7 @@ db_stack_trace_print(db_expr_t addr, int have_addr, db_expr_t count,
if (strcmp(symp, "Lsh5_event_interrupt") == 0 ||
strcmp(symp, "Lintrexit") == 0) {
/*
* We're tracing back through an asyncronous
* We're tracing back through an asynchronous
* exception (hardware interrupt). The previous PC
* and FP are available from the 'struct intrframe'
* saved on the stack.