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port rt-thread to NEC V850E

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@779 bbd45198-f89e-11dd-88c7-29a3b14d5316
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dzzxzz
2010-06-29 02:33:54 +00:00
parent 4ca5596c9c
commit b2f78b2e77
40 changed files with 12535 additions and 0 deletions
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libcpu/v850/stack.c
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/*
* File : stack.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2009, 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://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2010-06-29 lgnq the first version
*
* For : NEC V850E
* Toolchain : IAR Embedded Workbench for V850 v3.71
*/
#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; /* Load stack pointer */
*(--stk) = (rt_uint32_t) 0x23232323; /* r23 */
*(--stk) = (rt_uint32_t) 0x24242424; /* r24 */
*(--stk) = (rt_uint32_t) 0x25252525; /* r25 */
*(--stk) = (rt_uint32_t) 0x26262626; /* r26 */
*(--stk) = (rt_uint32_t) 0x27272727; /* r27 */
*(--stk) = (rt_uint32_t) 0x28282828; /* r28 */
*(--stk) = (rt_uint32_t) 0x29292929; /* r29 */
*(--stk) = (rt_uint32_t) 0x30303030; /* r30 */
*(--stk) = (rt_uint32_t) 0x31313131; /* r31 */
*(--stk) = (rt_uint32_t) 0x00000000; /* Task PSW = Interrupts enabled */
*(--stk) = (rt_uint32_t) tentry; /* Task's PC */
*(--stk) = (rt_uint32_t) 0x16161616; /* r16 */
*(--stk) = (rt_uint32_t) 0x15151515; /* r15 */
*(--stk) = (rt_uint32_t) 0x14141414; /* r14 */
*(--stk) = (rt_uint32_t) 0x13131313; /* r13 */
*(--stk) = (rt_uint32_t) 0x12121212; /* r12 */
*(--stk) = (rt_uint32_t) 0x11111111; /* r11 */
*(--stk) = (rt_uint32_t) 0x10101010; /* r10 */
*(--stk) = (rt_uint32_t) 0x09090909; /* r9 */
*(--stk) = (rt_uint32_t) 0x08080808; /* r8 */
*(--stk) = (rt_uint32_t) 0x07070707; /* r7 */
*(--stk) = (rt_uint32_t) 0x06060606; /* r6 */
*(--stk) = (rt_uint32_t) 0x05050505; /* r5 */
*(--stk) = (rt_uint32_t) 0x02020202; /* r2 */
*(--stk) = (rt_uint32_t) parameter; /* r1 */
return ((rt_uint8_t *)stk);
}