void kernel_c(){
//init basic data&struct
heap_init();
proc_init();
init_fs();
mem_entity[0]='G';
mem_entity[1]='M';
mem_entity[2]='K';
mem_entity[3]='B';
k_screen_reset();
detect_cpu();
oprintf("detecting cpu...cpu identify:%s\n",cpu_string);
// oprintf("mm init..\nring0_pgdir:%x,ring0_pgtbl:%x,base_proc_pgdir:%x,addr_kernel_info:%x,pages:%x\n",RING0_PGDIR,RING0_PGTBL,BASE_PROC_PGDIR,ADDR_KERNEL_INFO,PAGES);
global_equal_map();
__asm__("mov $0x101000,%eax\t\n"
"mov %eax,%cr3\t\n"
"mov %cr0,%eax\t\n"
"or $0x80000000,%eax\t\n"
"mov %eax,%cr0\t\n"
);
oprintf("global page-mapping for kernel built..open MMU\n");
create_kernel_process((int)&idle,9,0xffff,"idle",0); //pid must =0
create_kernel_process((int)hs,2,0xffff,"hs",1);//hs的时间片要非常多，保证在下一轮时间片重置之前不会被挂起 ERR:pid must =1
create_kernel_process((int)fs_ext,4,10,"fs_ext",1);//pid must =2
create_kernel_process((int)mm,3,10,"mm",1);//ERR mm has great prio,because it shall run and prepare condition for other process
create_kernel_process((int)tty,5,10,"tty",1);
create_kernel_process((int)&p1,8,10,"p1",1);
// ofork(t1,9,15,"t1",1);
// ofork(t2,9,5,"t2",1);
// ofork((int)&p2,7,5,"p2",3);
oprintf("basic process ofork done..now open IRQ,proc-dispatch begin\n");
__asm__("sti");
while(1);//内核陷入死循环，等待第一次时钟中断
}
void tty(void){
oprintf("try to mount device1:partation:3:%s\n",mount("/mnt/",1,3)?"success":"failed");
int crt_start;
__asm__("cli");
loadbuf=kmalloc(SIZE_LOAD_BUF);
oprintf("tty running..welcome^.^\n");
buff=kmalloc(23);
for(int j=0;j<0;j++){
oprintf("j=%u,i will do open\n",j);
// int fd=open("/mnt/home/wws/dimg",0);
int fd=open("/mnt/short");
oprintf("fd:%u,inode:%u\n",fd,fd_table[fd].inode);
int newseek=lseek(fd,-2,2);
int r_bytes=read(fd,tmp,7);
oprintf("r_bytes:%u,newseek:%u\n",r_bytes,newseek);
// while(1);
}
while(1){
new_prompt:
reset_cmd_asciis();
memsetw((u16*)loadbuf,SIZE_LOAD_BUF/2,0);
oprintf("# ");
wait_input:
while(1){
unsigned ascii=getchar();
switch(ascii){
case 128://ctrl+l
k_screen_reset();
goto new_prompt;
case 129://ctrl+c
kill(front_pid);
oprintf("^C\n");
goto new_prompt;
case 130://ctrl+u
crt_start=get_start();
set_start(crt_start>=80?crt_start-80:crt_start);
goto wait_input;
case 131://ctrl+d
crt_start=get_start();
set_start(crt_start<(80*24*4-1)?crt_start+80:crt_start);
goto wait_input;
}
oprintf("%c",ascii);//oprintf函数有能力打印控制字符，但更多的ctrl，shift组合还要跟进
if(ascii=='\n'){//回车符执行命令
parse_cmd_asciis();
break;
}
//执行到这儿，说明是普通输入,写入cmd_asciis
write_cmd_asciis(ascii);
}
}
}
