diff options
Diffstat (limited to 'pk/std/std_common.h')
| -rw-r--r-- | pk/std/std_common.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/pk/std/std_common.h b/pk/std/std_common.h index 3c8fda2d..38bc1621 100644 --- a/pk/std/std_common.h +++ b/pk/std/std_common.h @@ -26,14 +26,14 @@ /// Check for interrupts pending in the interrupt status register while the IRQ /// is computed. The IRQ is expected to be stored in r4. If no IRQ is /// pending then load the phantom irq # (EXTERNAL_IRQS). -/// Only the following registers have been saved off and can be used: -/// r3, r4, r5, r6, cr0, lr +/// +/// r1, r2, r3, and r13 must not be modified. All other registers may be used. /// .macro hwmacro_get_ext_irq _lvdg d5, STD_LCL_EISTR #load the 64bit interrupt status into d5 cntlzw r4, r5 - cmpwible r4, 31, external_irq_found #branch if irq is lt or eq to 31 + cmpwible r4, 31, call_external_irq_handler #branch if irq is lt or eq to 31 ## No IRQ pending in r5. Try r6. ## Note: irq # will be 64 (phantom irq) if no bits were set in either register |
