#define HAS_TASK_INFO 1
#endif
+/* arm stacks must be 32-bit aligned */
+#ifdef __arm__
+#define AO_STACK_ALIGNMENT __attribute__ ((aligned(4)))
+#endif
+#ifdef SDCC
+#define AO_STACK_ALIGNMENT
+#endif
+#ifdef __AVR__
+#define AO_STACK_ALIGNMENT
+#endif
+
/* An AltOS task */
struct ao_task {
__xdata void *wchan; /* current wait channel (NULL if running) */
struct ao_list queue;
struct ao_list alarm_queue;
#endif
- uint8_t stack[AO_STACK_SIZE]; /* saved stack */
+ uint8_t stack[AO_STACK_SIZE] AO_STACK_ALIGNMENT; /* saved stack */
#if HAS_SAMPLE_PROFILE
uint32_t ticks;
uint32_t yields;