*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
#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;
extern __xdata struct ao_task *__data ao_cur_task;
extern __data uint8_t ao_task_minimize_latency; /* Reduce IRQ latency */
+#ifndef HAS_ARCH_VALIDATE_CUR_STACK
+#define ao_validate_cur_stack()
+#endif
+
/*
ao_task.c
*/