72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/*
|
|
* File : stack.c
|
|
* This file is part of RT-Thread RTOS
|
|
* COPYRIGHT (C) 2006, RT-Thread Development Team
|
|
*
|
|
* The license and distribution terms for this file may be
|
|
* found in the file LICENSE in this distribution or at
|
|
* http://openlab.rt-thread.com/license/LICENSE
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2011-12-17 nl1031 first implementation for MicroBlaze.
|
|
*
|
|
*/
|
|
#include <rtthread.h>
|
|
extern void *_SDA_BASE_;
|
|
extern void *_SDA2_BASE_;
|
|
|
|
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
unsigned long *stk;
|
|
|
|
stk = (unsigned long *)stack_addr;
|
|
stk--;
|
|
stk--;
|
|
*stk-- = 0; /* r31 */
|
|
*stk-- = 0; /* r30 */
|
|
*stk-- = 0; /* r29 */
|
|
*stk-- = 0; /* r28 */
|
|
*stk-- = 0; /* r27 */
|
|
*stk-- = 0; /* r26 */
|
|
*stk-- = 0; /* r25 */
|
|
*stk-- = 0; /* r24 */
|
|
*stk-- = 0; /* r23 */
|
|
*stk-- = 0; /* r22 */
|
|
*stk-- = 0; /* r21 */
|
|
*stk-- = 0; /* r20 */
|
|
*stk-- = 0; /* r19 */
|
|
*stk-- = 0; /* r18 */
|
|
*stk-- = 0; /* r17 */
|
|
*stk-- = (unsigned long)texit - 8; /* r15 = task return address*/
|
|
*stk-- = (unsigned long)tentry; /* r14 = entry address*/
|
|
*stk-- = (unsigned long)&_SDA_BASE_; /* r13 */
|
|
*stk-- = 0; /* r12 */
|
|
*stk-- = 0; /* r11 */
|
|
*stk-- = 0; /* r10 */
|
|
*stk-- = 0; /* r09 */
|
|
*stk-- = 0; /* r08 */
|
|
*stk-- = 0; /* r07 */
|
|
*stk-- = 0; /* r06 */
|
|
*stk-- = (unsigned long) parameter; /* r05 */
|
|
*stk-- = 0; /* r04 */
|
|
*stk-- = 0; /* r03 */
|
|
*stk-- = (unsigned long)&_SDA2_BASE_; /* r02 */
|
|
*stk = 2; /* enable interrupt */
|
|
return (rt_uint8_t *)stk;
|
|
}
|
|
|