player/Project_App_Calendar/App_Src/main/global.c

#include "global.h"
#include "main_inc.h"



//<2F><>ȡ<EFBFBD>ͱ<EFBFBD><CDB1><EFBFBD>r9<72>Ĵ<EFBFBD><C4B4><EFBFBD>
void *get_r9(void);
void set_r9(void *r9);


//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȫ<EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
static void * const volatile g_r9;

//ָ<><D6B8>app<70><70><EFBFBD><EFBFBD>
static app_struct *g_me;


//<2F><>const<73><74><EFBFBD>ͱ<EFBFBD><CDB1><EFBFBD><EFBFBD><EFBFBD>ֵ
static void save_const(void *const_addr, u32 value)
{
    __asm__ volatile (
        "str %1, [%0]"
        :
        : "r" (const_addr), "r" (value)
        : "memory"
    );
}

void *get_r9(void)
{
    void *result;
    __asm__ volatile (
        "mov %0, r9"
        : "=r" (result)
        :
        :
    );
    return result;
}

void set_r9(void *r9_val)
{
    __asm__ volatile (
        "mov r9, %0"
        :
        : "r" (r9_val)
        : "r9"
    );
}


void *global_in(void)
{
	void *t=get_r9();
	set_r9(g_r9);
	return t;
}

void global_out(void *r9)
{
	set_r9(r9);
}


void global_init(app_struct *me)
{
	void *t=get_r9();

	//ʹ<>ú<EFBFBD><C3BA><EFBFBD>ǿ<EFBFBD>и<EFBFBD>ֵ
	save_const((void *)&g_r9,(u32)t);
	g_me=me;

	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṩ<EFBFBD><E1B9A9>ϵͳ<CFB5><CDB3><EFBFBD>ã<EFBFBD><C3A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD>app
	extern int __app_exit(void *);
	g_me->exit=__app_exit;

}

//app<70><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void global_run_start(void)
{
	if(g_me) g_me->run_state++;
}


//app<70><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void global_run_exit(void)
{
	if(g_me)
	{
		if(g_me->run_state) g_me->run_state--;
	}
}