uint32_t a = (uint32_t) start; \
int i; \
\
- /* APSR */ \
- ARM_PUSH32(sp, 0); \
- \
- /* PRIMASK with interrupts enabled */ \
- ARM_PUSH32(sp, 0); \
- \
/* Return address (goes into LR) */ \
ARM_PUSH32(sp, a); \
\
while (i--) \
ARM_PUSH32(sp, 0); \
\
+ /* APSR */ \
+ ARM_PUSH32(sp, 0); \
+ \
+ /* PRIMASK with interrupts enabled */ \
+ ARM_PUSH32(sp, 0); \
+ \
task->sp = sp; \
} while (0);
#define ao_arch_save_regs() do { \
- uint32_t apsr; \
- uint32_t primask; \
+ /* Save general registers */ \
+ asm("push {r0-r12,lr}\n"); \
\
/* Save APSR */ \
- asm("mrs %0,apsr" : "=&r" (apsr)); \
- asm("push {%0}" : : "r" (apsr)); \
+ asm("mrs r0,apsr"); \
+ asm("push {r0}"); \
\
/* Save PRIMASK */ \
- asm("mrs %0,primask" : "=&r" (primask)); \
- asm("push {%0}" : : "r" (primask)); \
+ asm("mrs r0,primask"); \
+ asm("push {r0}"); \
\
- /* Save general registers */ \
- asm("push {r0-r12,lr}\n"); \
+ /* Enable interrupts */ \
+ sei(); \
} while (0)
#define ao_arch_save_stack() do { \
#define ao_arch_restore_stack() do { \
uint32_t sp; \
- uint32_t primask; \
- uint32_t apsr; \
sp = (uint32_t) ao_cur_task->sp; \
\
/* Switch stacks */ \
asm("mov sp, %0" : : "r" (sp) ); \
\
- /* Restore general registers */ \
- asm("pop {r0-r12,lr}\n"); \
- \
/* Restore PRIMASK */ \
- asm("pop {%0}" : "=&r" (primask) ); \
- asm("msr primask,%0" : : "r" (primask) ); \
+ asm("pop {r0}"); \
+ asm("msr primask,r0"); \
\
/* Restore APSR */ \
- asm("pop {%0}" : "=&r" (apsr) ); \
- asm("msr apsr,%0" : : "r" (apsr) ); \
+ asm("pop {r0}"); \
+ asm("msr apsr,r0"); \
+ \
+ /* Restore general registers */ \
+ asm("pop {r0-r12,lr}\n"); \
\
/* Return to calling function */ \
asm("bx lr"); \
void ao_lcd_font_string(char *s);
-#define USE_SERIAL_STDIN (USE_SERIAL_1_STDIN + USE_SERIAL_2_STDIN + USE_SERIAL_3_STDIN)
-
char
ao_serial1_getchar(void);