while (--stack_len); \
}
-#define ao_arch_isr_stack() \
- /* Empty the stack; might as well let interrupts have the whole thing */ \
- (SP = AO_STACK_START - 1)
+/* Empty the stack; might as well let interrupts have the whole thing */
+#define ao_arch_isr_stack() (SP = AO_STACK_START - 1)
-#define ao_arch_cpu_idle() (PCON = PCON_IDLE)
+/* Idle the CPU, waking when an interrupt occurs */
+#define ao_arch_cpu_idle() (PCON = PCON_IDLE)
+#define ao_arch_block_interrupts() __asm clr _EA __endasm
+#define ao_arch_release_interrupts() __asm setb _EA __endasm
#define ao_arch_restore_stack() { \
uint8_t stack_len; \
0098$: \
SETB _EA \
0099$: \
- /* Finally pop off the ACC, which was the first register saved. */ \
+ /* Finally restore ACC, which was the first register saved. */ \
pop ACC \
ret \
__endasm; \