void user_process_1()
{
int v1=5;
while(1)
{
v1++;
sys_yieldto(p2);
}
}
void user_process_2()
{
int v2=-12;
while(1)
{
v2-=2;
sys_yieldto(p1);
}
}
void kmain( void )
{
sched_init();
p1=create_process((func_t*)&user_process_1);
p2=create_process((func_t*)&user_process_2);
__asm("cps 0x10"); // switch CPU to USER mode
// **********************************************************************
sys_yieldto(p1);
// this is now unreachable
PANIC();
}
void kmain( void )
{
sched_init();
/*Needed before managing different stacks
p1=&pcb1;
p2=&pcb2; //initialize p1 and p2//
//initialize lr for first time processus switch
p1->lrUser= (uint32_t) &user_process_1;
p2->lrUser= (uint32_t) &user_process_2;
*/
p1=create_process((func_t*) &user_process_1);
p2=create_process((func_t*) &user_process_2);
__asm("cps 0x10");//switch CPU to USER mode//
sys_yieldto(p1);
// this is now unreachable
PANIC();
}
