diff options
Diffstat (limited to 'pk/gpe/gpe_common.h')
| -rw-r--r-- | pk/gpe/gpe_common.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/pk/gpe/gpe_common.h b/pk/gpe/gpe_common.h index 05ec4464..043a4802 100644 --- a/pk/gpe/gpe_common.h +++ b/pk/gpe/gpe_common.h @@ -35,17 +35,20 @@ /// Check for interrupts pending in status register 0 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). +/// +/// r1, r2, r3, and r13 must not be modified. All other registers may be used. +/// .macro hwmacro_get_ext_irq - _lwzi %r3, %r3, GPE_GISR0(APPCFG_OCC_INSTANCE_ID) - cntlzw %r4, %r3 - cmpwible %r4, 31, external_irq_found #branch if irq is lt or eq to 31 + _lwzi %r5, %r5, GPE_GISR0(APPCFG_OCC_INSTANCE_ID) + cntlzw %r4, %r5 + cmpwible %r4, 31, call_external_irq_handler #branch if irq is lt or eq to 31 ## No IRQ pending in interrupt set 0. Try set 1. ## Note: irq # will be 64 (EXTERNAL_IRQS) if no bits were set in either register - _lwzi %r3, %r3, GPE_GISR1(APPCFG_OCC_INSTANCE_ID) - cntlzw %r4, %r3 + _lwzi %r6, %r6, GPE_GISR1(APPCFG_OCC_INSTANCE_ID) + cntlzw %r4, %r6 addi %r4, %r4, 32 .endm |
