diff options
Diffstat (limited to 'cpukit/score/cpu/lm32/irq.c')
| -rw-r--r-- | cpukit/score/cpu/lm32/irq.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/cpukit/score/cpu/lm32/irq.c b/cpukit/score/cpu/lm32/irq.c index 3eb723d3d8..6580405513 100644 --- a/cpukit/score/cpu/lm32/irq.c +++ b/cpukit/score/cpu/lm32/irq.c @@ -28,11 +28,14 @@ unsigned long *_old_stack_ptr; #endif +unsigned long *_exception_stack_frame; + register unsigned long *stack_ptr asm("sp"); void __ISR_Handler(uint32_t vector, CPU_Interrupt_frame *ifr) { register uint32_t level; + _exception_stack_frame = NULL; /* Interrupts are disabled upon entry to this Handler */ @@ -77,7 +80,15 @@ void __ISR_Handler(uint32_t vector, CPU_Interrupt_frame *ifr) if ( _Context_Switch_necessary || _ISR_Signals_to_thread_executing ) { _ISR_Signals_to_thread_executing = FALSE; + + /* save off our stack frame so the context switcher can get to it */ + _exception_stack_frame = ifr; + _Thread_Dispatch(); + + /* and make sure its clear in case we didn't dispatch. if we did, its + * already cleared */ + _exception_stack_frame = NULL; } } |