112 lines
3.4 KiB
C
112 lines
3.4 KiB
C
/*
|
|
* File : cpu.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
|
|
* 2010-01-25 Bernard first version
|
|
* 2012-05-31 aozima Merge all of the C source code into cpuport.c
|
|
* 2012-08-17 aozima fixed bug: store r8 - r11.
|
|
*/
|
|
|
|
#include <rtthread.h>
|
|
|
|
struct exception_stack_frame
|
|
{
|
|
rt_uint32_t r0;
|
|
rt_uint32_t r1;
|
|
rt_uint32_t r2;
|
|
rt_uint32_t r3;
|
|
rt_uint32_t r12;
|
|
rt_uint32_t lr;
|
|
rt_uint32_t pc;
|
|
rt_uint32_t psr;
|
|
};
|
|
|
|
struct stack_frame
|
|
{
|
|
/* r4 ~ r7 low register */
|
|
rt_uint32_t r4;
|
|
rt_uint32_t r5;
|
|
rt_uint32_t r6;
|
|
rt_uint32_t r7;
|
|
|
|
/* r8 ~ r11 high register */
|
|
rt_uint32_t r8;
|
|
rt_uint32_t r9;
|
|
rt_uint32_t r10;
|
|
rt_uint32_t r11;
|
|
|
|
struct exception_stack_frame exception_stack_frame;
|
|
};
|
|
|
|
/* flag in interrupt handling */
|
|
rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
|
|
rt_uint32_t rt_thread_switch_interrupt_flag;
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
struct stack_frame * stack_frame;
|
|
rt_uint8_t * stk;
|
|
unsigned long i;
|
|
|
|
stk = stack_addr + sizeof(rt_uint32_t);
|
|
|
|
stk -= sizeof(struct stack_frame);
|
|
stack_frame = (struct stack_frame *)stk;
|
|
|
|
/* init all register */
|
|
for(i=0; i<sizeof(struct stack_frame)/sizeof(rt_uint32_t); i++)
|
|
{
|
|
((rt_uint32_t*)stack_frame)[i] = 0xdeadbeef;
|
|
}
|
|
|
|
stack_frame->exception_stack_frame.r0 = (unsigned long)parameter; /* r0 : argument */
|
|
stack_frame->exception_stack_frame.r1 = 0; /* r1 */
|
|
stack_frame->exception_stack_frame.r2 = 0; /* r2 */
|
|
stack_frame->exception_stack_frame.r3 = 0; /* r3 */
|
|
stack_frame->exception_stack_frame.r12 = 0; /* r12 */
|
|
stack_frame->exception_stack_frame.lr = (unsigned long)texit; /* lr */
|
|
stack_frame->exception_stack_frame.pc = (unsigned long)tentry; /* entry point, pc */
|
|
stack_frame->exception_stack_frame.psr = 0x01000000L; /* PSR */
|
|
|
|
/* return task's current stack address */
|
|
return stk;
|
|
}
|
|
|
|
extern long list_thread(void);
|
|
extern rt_thread_t rt_current_thread;
|
|
void rt_hw_hard_fault_exception(struct exception_stack_frame* contex)
|
|
{
|
|
rt_kprintf("psr: 0x%08x\n", contex->psr);
|
|
rt_kprintf(" pc: 0x%08x\n", contex->pc);
|
|
rt_kprintf(" lr: 0x%08x\n", contex->lr);
|
|
rt_kprintf("r12: 0x%08x\n", contex->r12);
|
|
rt_kprintf("r03: 0x%08x\n", contex->r3);
|
|
rt_kprintf("r02: 0x%08x\n", contex->r2);
|
|
rt_kprintf("r01: 0x%08x\n", contex->r1);
|
|
rt_kprintf("r00: 0x%08x\n", contex->r0);
|
|
|
|
rt_kprintf("hard fault on thread: %s\n", rt_current_thread->name);
|
|
#ifdef RT_USING_FINSH
|
|
list_thread();
|
|
#endif
|
|
while (1);
|
|
}
|