diff options
Diffstat (limited to 'core/minute-ia/switch.S')
| -rw-r--r-- | core/minute-ia/switch.S | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/core/minute-ia/switch.S b/core/minute-ia/switch.S index de76421a57..9391c186e4 100644 --- a/core/minute-ia/switch.S +++ b/core/minute-ia/switch.S @@ -9,6 +9,12 @@ #include "registers.h" #include "task_defs.h" +#ifdef CONFIG_TASK_PROFILING +#define task_start_irq_handler_call call task_start_irq_handler +#else +#define task_start_irq_handler_call +#endif + .text .extern current_task @@ -57,7 +63,7 @@ default_int_handler: .endfunc # Switches from one task to another if ready. -# __schedule triggeres software interrupt ISH_TS_VECTOR, which is handled by +# __schedule triggers software interrupt ISH_TS_VECTOR, which is handled by # __switchto .align 4 .func __switchto @@ -71,10 +77,17 @@ __switchto: # triggering ISH_TS_VECTOR # # Push %ecx and %edx into stack to pass them as function parameters - # to switch_handler(desched, resched) - + # to switch_handler(desched, resched). After call, we clean up stack + # pointer. Note, we do this now before task_start_irq has a chance + # to clobber these caller-saved registers. push %ecx push %edx + + # We don't push anything on the stack for start irq since the + # parameter is unused. + task_start_irq_handler_call + + # Stack is already set up from previous pushes call switch_handler addl $0x8, %esp # Clean up stack |