From 26c8af5f01dfb91f709cc2ba07fb650949aae13e Mon Sep 17 00:00:00 2001 From: Olaf Hering Date: Fri, 8 Sep 2006 16:29:21 +0200 Subject: [POWERPC] print backtrace when entering xmon xmon does not print a backtrace per default. This is bad on systems with USB keyboard, the most needed info about the crash is lost. print a backtrace during the very first xmon entry. Booting with xmon=nobt disables the autobacktrace functionality. Signed-off-by: Olaf Hering Signed-off-by: Paul Mackerras --- arch/powerpc/xmon/xmon.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/powerpc/xmon') diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 179b10ced8c..8adad1444a5 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -137,10 +137,14 @@ static void bootcmds(void); static void proccall(void); void dump_segments(void); static void symbol_lookup(void); +static void xmon_show_stack(unsigned long sp, unsigned long lr, + unsigned long pc); static void xmon_print_symbol(unsigned long address, const char *mid, const char *after); static const char *getvecname(unsigned long vec); +int xmon_no_auto_backtrace; + extern int print_insn_powerpc(unsigned long, unsigned long, int); extern void xmon_enter(void); @@ -736,6 +740,12 @@ cmds(struct pt_regs *excp) last_cmd = NULL; xmon_regs = excp; + + if (!xmon_no_auto_backtrace) { + xmon_no_auto_backtrace = 1; + xmon_show_stack(excp->gpr[1], excp->link, excp->nip); + } + for(;;) { #ifdef CONFIG_SMP printf("%x:", smp_processor_id()); -- cgit v1.2.3