/*
?*?File??????:?cpuport.c
?*?This?file?is?part?of?RT-Thread?RTOS
?*?COPYRIGHT?（C）?2009?-?2011?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
?*?2011-06-15?????aozima???????the?first?version?for?lpc214x
?*?2013-03-29?????aozima???????Modify?the?interrupt?interface?implementations.
?*/

#include?
#include?
#include?“lpc214x.h“

#define?MAX_HANDLERS	32
#define?SVCMODE		????0x13

extern?rt_uint32_t?rt_interrupt_nest;

/*?exception?and?interrupt?handler?table?*/
struct?rt_irq_desc?irq_desc[MAX_HANDLERS];?

/**
?*?@addtogroup?LPC214x
?*/
/*@{*/

/**
?*?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）?	?=?（unsigned?long）tentry&0xFFFFFFFE;		/*?entry?point?*/
	*（--stk）?=?（unsigned?long）texit;		/*?lr?*/
	*（--stk）?=?0;							/*?r12?*/
	*（--stk）?=?0;							/*?r11?*/
	*（--stk）?=?0;							/*?r10?*/
	*（--stk）?=?0;							/*?r9?*/
	*（--stk）?=?0;							/*?r8?*/
	*（--stk）?=?0;							/*?r7?*/
	*（--stk）?=?0;							/*?r6?*/
	*（--stk）?=?0;							/*?r5?*/
	*（--stk）?=?0;							/*?r4?*/
	*（--stk）?=?0;							/*?r3?*/
	*（--stk）?=?0;							/*?r2?*/
	*（--stk）?=?0;							/*?r1?*/
	*（--stk）?=?（unsigned?long）parameter;	/*?r0?:?argument?*/

	/*?cpsr?*/
	if?（（rt_uint32_t）tentry?&?0x01）
		*（--stk）?=?SVCMODE?|?0x20;			/*?thumb?mode?*/
	else
		*（--stk）?=?SVCMODE;					/*?arm?mode???*/

	/*?return?task‘s?current?stack?address?*/
	return?（rt_uint8_t?*）stk;
}

/*?exception?and?interrupt?handler?table?*/
rt_uint32_t?rt_interrupt_from_thread?rt_interrupt_to_thread;
rt_uint32_t?rt_thread_switch_interrupt_flag;

void?rt_hw_interrupt_handler（int?vector?void?*param）
{
	rt_kprintf（“Unhandled?interrupt?%d?occured!!!\n“?vector）;
}

/**
?*?This?function?will?initialize?hardware?interrupt
?*/
void?rt_hw_interrupt_init（void）
{
	rt_base_t?index;
	rt_uint32_t?*vect_addr?*vect_ctl;

	/*?initialize?VIC*/
	VICIntEnClr?=?0xffffffff;//clear?int
	VICVectAddr?=?0;//清零向量地址寄存器
	/*?set?all?to?IRQ?*/
	VICIntSelect?=?0;//中斷選擇寄存器

????rt_memset（irq_desc?0x00?sizeof（irq_desc））;
	for?（index?=?0;?index?	{
????????irq_desc[index].handler?=?rt_hw_interrupt_handler;

		vect_addr?	=?（rt_uint32_t?*）（VIC_base_ADDR?+?0x100?+?（index?<		vect_ctl?	=?（rt_uint32_t?*）（VIC_base_ADDR?+?0x200?+?（index?<
		*vect_addr?	=?（rt_uint32_t）&irq_desc[index];
		*vect_ctl?	=?0xF;
	}

	/*?init?in

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????3099??2014-01-06?22:38??lpc213x\context_gcc.S

?????文件???????5170??2014-06-14?15:04??lpc213x\context_iar.S

?????文件???????5150??2014-06-13?11:28??lpc213x\cpuport.c

?????文件??????21596??2014-01-06?22:38??lpc213x\lpc214x.h

?????文件??????10191??2014-01-06?22:38??lpc213x\startup_gcc.S

?????文件???????5260??2014-06-14?16:26??lpc213x\start_iar.S

?????目錄??????????0??2014-06-20?13:18??lpc213x

-----------?---------??----------?-----??----

????????????????50466????????????????????7