diff options
Diffstat (limited to 'arch/xtensa/kernel/traps.c')
| -rw-r--r-- | arch/xtensa/kernel/traps.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c index 5caf2b64d43a..01e0111bf787 100644 --- a/arch/xtensa/kernel/traps.c +++ b/arch/xtensa/kernel/traps.c @@ -293,6 +293,17 @@ do_debug(struct pt_regs *regs) } +/* Set exception C handler - for temporary use when probing exceptions */ + +void * __init trap_set_handler(int cause, void *handler) +{ + unsigned long *entry = &exc_table[EXC_TABLE_DEFAULT / 4 + cause]; + void *previous = (void *)*entry; + *entry = (unsigned long)handler; + return previous; +} + + /* * Initialize dispatch tables. * @@ -397,7 +408,8 @@ static inline void spill_registers(void) "wsr a13, sar\n\t" "wsr a14, ps\n\t" :: "a" (&a0), "a" (&ps) - : "a2", "a3", "a4", "a7", "a11", "a12", "a13", "a14", "a15", "memory"); + : "a2", "a3", "a4", "a7", "a11", "a12", "a13", "a14", "a15", + "memory"); } void show_trace(struct task_struct *task, unsigned long *sp) @@ -452,7 +464,7 @@ void show_stack(struct task_struct *task, unsigned long *sp) if (!sp) sp = stack_pointer(task); - stack = sp; + stack = sp; printk("\nStack: "); @@ -523,5 +535,3 @@ void die(const char * str, struct pt_regs * regs, long err) do_exit(err); } - - |