2018-06-05 11:33:49 +08:00
|
|
|
/*
|
2021-03-24 15:46:51 +08:00
|
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
2018-06-05 11:33:49 +08:00
|
|
|
*
|
2021-03-24 15:46:51 +08:00
|
|
|
* SPDX-License-Identifier: Apache-2.0
|
2018-06-05 11:33:49 +08:00
|
|
|
*
|
|
|
|
|
* Change Logs:
|
|
|
|
|
* Date Author Notes
|
|
|
|
|
* 2017-01-01 Urey first version
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include <rtthread.h>
|
|
|
|
|
|
|
|
|
|
rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter, rt_uint8_t *stack_addr, void *texit)
|
|
|
|
|
{
|
|
|
|
|
rt_uint32_t *stk = (rt_uint32_t *)stack_addr;
|
|
|
|
|
|
|
|
|
|
stk = (rt_uint32_t *)(stack_addr + sizeof(rt_uint32_t));
|
|
|
|
|
stk = (rt_uint32_t *)RT_ALIGN_DOWN((rt_uint32_t)stk, 8);
|
|
|
|
|
|
|
|
|
|
*(--stk) = (rt_uint32_t)tentry; /* Entry Point */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x80000150L; /* PSR */
|
|
|
|
|
*(--stk) = (rt_uint32_t)texit; /* R15 (LR) (init value will cause fault if ever used) */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x13131313L; /* R13 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x12121212L; /* R12 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x11111111L; /* R11 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x10101010L; /* R10 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x09090909L; /* R9 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x08080808L; /* R8 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x07070707L; /* R7 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x06060606L; /* R6 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x05050505L; /* R5 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x04040404L; /* R4 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x03030303L; /* R3 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x02020202L; /* R2 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)0x01010101L; /* R1 */
|
|
|
|
|
*(--stk) = (rt_uint32_t)parameter; /* R0 : argument */
|
|
|
|
|
|
|
|
|
|
/* return task's current stack address */
|
|
|
|
|
return (rt_uint8_t *)stk;
|
|
|
|
|
}
|
|
|
|
|
|
