82 lines
3.3 KiB
C
82 lines
3.3 KiB
C
/*
|
|
* File : stack.c
|
|
* This file is part of RT-Thread RTOS
|
|
* COPYRIGHT (C) 2006, RT-Thread Development Team
|
|
*
|
|
* 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; 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
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2017-07-31 zhangjun copy from mini2440
|
|
*/
|
|
#include <rtthread.h>
|
|
|
|
/**
|
|
* This function will initialize thread stack
|
|
*
|
|
* @param tentry the entry of thread
|
|
* @param parameter the parameter of entry
|
|
* @param stack_addr the beginning stack address
|
|
* @param texit the function will be called when thread exit
|
|
*
|
|
* @return stack address
|
|
*/
|
|
rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
|
|
rt_uint8_t *stack_addr, void *texit)
|
|
{
|
|
rt_uint32_t *stk;
|
|
|
|
//stk = (rt_uint32_t*)stack_addr;
|
|
stack_addr += sizeof(rt_uint32_t);
|
|
stack_addr = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)stack_addr, 8);
|
|
stk = (rt_uint32_t *)stack_addr;
|
|
|
|
*(--stk) = (rt_uint32_t)tentry; /* entry point */
|
|
*(--stk) = (rt_uint32_t)texit; /* ra */
|
|
*(--stk) = (rt_uint32_t)parameter; /* a0 */
|
|
*(--stk) = 0xffffffff; /* a1 */
|
|
*(--stk) = 0xffffffff; /* a2 */
|
|
*(--stk) = 0xffffffff; /* a3 */
|
|
*(--stk) = 0xffffffff; /* a4 */
|
|
*(--stk) = 0xffffffff; /* a5 */
|
|
*(--stk) = 0xffffffff; /* a6 */
|
|
*(--stk) = 0xffffffff; /* a7 */
|
|
*(--stk) = 0xffffffff; /* s0/fp */
|
|
*(--stk) = 0xffffffff; /* s1 */
|
|
*(--stk) = 0xffffffff; /* s2 */
|
|
*(--stk) = 0xffffffff; /* s3 */
|
|
*(--stk) = 0xffffffff; /* s4 */
|
|
*(--stk) = 0xffffffff; /* s5 */
|
|
*(--stk) = 0xffffffff; /* s6 */
|
|
*(--stk) = 0xffffffff; /* s7 */
|
|
*(--stk) = 0xffffffff; /* s8 */
|
|
*(--stk) = 0xffffffff; /* s9 */
|
|
*(--stk) = 0xffffffff; /* s10*/
|
|
*(--stk) = 0xffffffff; /* s11*/
|
|
*(--stk) = 0xffffffff; /* t0 */
|
|
*(--stk) = 0xffffffff; /* t1 */
|
|
*(--stk) = 0xffffffff; /* t2 */
|
|
*(--stk) = 0xffffffff; /* t3 */
|
|
*(--stk) = 0xffffffff; /* t4 */
|
|
*(--stk) = 0xffffffff; /* t5 */
|
|
*(--stk) = 0xffffffff; /* t6 */
|
|
*(--stk) = 0xffffffff; /* tp */
|
|
*(--stk) = 0xffffffff; /* gp */
|
|
*(--stk) = 0x880; /* mie */
|
|
// *(--stk) = (rt_uint32_t)parameter; /* r0 : argument */
|
|
/* return task's current stack address */
|
|
return (rt_uint8_t *)stk;
|
|
}
|