void
debug_putc (const char c)
{
static uint16_t* buff = (uint16_t*)0xB8000;
switch (c) {
case '\t':
{
memsetw(buff, 0x4E00, 4);
buff += 4;
break;
}
case '\n':
{
size_t len = 80 - (((size_t)buff-0xB8000)/2 + 80) % 80;
memsetw(buff, 0x4E00, len);
buff += len;
break;
}
default:
*buff++ = (uint16_t)(0x4E00 | c);
break;
}
if ((size_t)buff >= 0xB8000+(80*25*2)) {
buff = (uint16_t*)0xB8000;
}
}
void ff_mpeg4_clean_buffers(MpegEncContext *s)
{
int c_wrap, c_xy, l_wrap, l_xy;
l_wrap= s->b8_stride;
l_xy= (2*s->mb_y-1)*l_wrap + s->mb_x*2 - 1;
c_wrap= s->mb_stride;
c_xy= (s->mb_y-1)*c_wrap + s->mb_x - 1;
#if 0
/* clean DC */
memsetw(s->dc_val[0] + l_xy, 1024, l_wrap*2+1);
memsetw(s->dc_val[1] + c_xy, 1024, c_wrap+1);
memsetw(s->dc_val[2] + c_xy, 1024, c_wrap+1);
#endif
/* clean AC */
memset(s->ac_val[0] + l_xy, 0, (l_wrap*2+1)*16*sizeof(int16_t));
memset(s->ac_val[1] + c_xy, 0, (c_wrap +1)*16*sizeof(int16_t));
memset(s->ac_val[2] + c_xy, 0, (c_wrap +1)*16*sizeof(int16_t));
/* clean MV */
// we can't clear the MVs as they might be needed by a b frame
// memset(s->motion_val + l_xy, 0, (l_wrap*2+1)*2*sizeof(int16_t));
// memset(s->motion_val, 0, 2*sizeof(int16_t)*(2 + s->mb_width*2)*(2 + s->mb_height*2));
s->last_mv[0][0][0]=
s->last_mv[0][0][1]=
s->last_mv[1][0][0]=
s->last_mv[1][0][1]= 0;
}
// clears the screen
void clear()
{
memsetw(video_mem, blank, 80*25);
// reset cursor location
cursor_x = cursor_y = 0;
move_cursor(cursor_y, cursor_x);
}
void *
memset(void *v, int c, size_t _n)
{
char *p;
size_t n0;
size_t n = _n;
if (n == 0) return NULL; // zra: complain here?
p = v;
while (n > 0 && ((uintptr_t)p & (sizeof(long)-1)))
{
*p++ = c;
n--;
}
if (n >= sizeof(long))
{
n0 = n / sizeof(long) * sizeof(long);
memsetw((long*)p, c, n0);
n -= n0;
p += n0;
}
while (n > 0)
{
*p++ = c;
n--;
}
return v;
}
// clear everything including scrollback
void cls(void) {
memsetw(&buffer, blank, BUFFER_SIZE);
clear_screen();
buf_csr = &buffer;
view_offset = &buffer;
move_csr();
}
quiet ()
{
register short vce;
for (vce = 0; vce < 12; vce++) /* for each voice ... */
sendval (vce, 2, 0); /* ... set level = 0 */
memsetw (seqflag, 0, 16); /* stop the sequences */
memsetw (seqtime, 0, 16); /* ... */
memsetw (trstate, 0, 16); /* reset the triggers */
seqdupd = 0xFFFF; /* request display update */
stmproc (NULL_DEF); /* trigger the blank definer */
}
void fork()
{
struct Task* task = malloc(sizeof(struct Task));
if(!task)
panic("Task alloc failed!");
memcpy(task, current_task, sizeof(struct Task));
task->segment = task_seg;
task_seg += 0x1000;
farmemcpy(0x0000, 0x0000, 0x8000, task->segment, current_task->segment);
farmemcpy(0x8000, 0x8000, 0x8000, task->segment, current_task->segment);
memsetw(task->stack, 0, KERNEL_STACK_WORDS);
/* create a kernel stack for returning to userspace */
task->stack[KERNEL_STACK_WORDS - 1] = &kernel_exit; /* return address */
task->stack[KERNEL_STACK_WORDS - 2] = 0x0000; /* bp */
task->stack[KERNEL_STACK_WORDS - 3] = 0x0000; /* ax */
task->stack[KERNEL_STACK_WORDS - 4] = 0x0000; /* si */
task->stack[KERNEL_STACK_WORDS - 5] = 0x0000; /* di */
task->kernel_sp = &task->stack[KERNEL_STACK_WORDS - 5];
task->stack_top = &task->stack[KERNEL_STACK_WORDS - 1];
pokew(task->segment, task->user_sp + 18, task->segment);
pokew(task->segment, task->user_sp + 12, 0);
task->next = task_list;
task_list = task;
return;
}
void SimpleConsole::ScrollUp()
{
memcpyw( buffer, buffer+width, width*(height-1) );
memsetw( buffer + width *( height - 1 ), charStyle , width );
memcpyw( video, buffer, width * height );
cursorY --;
}
/* Clears the screen */
void cls()
{
uint16_t blank;
int i;
/* Again, we need the 'short' that will be used to
* represent a space with color */
blank = 0x20 | (attrib << 8);
/* set background color of status line */
for (i=0; i < screen_w; i++)
*((uint8_t*)(textmemptr + i)+1) = attrib_status;
/* Sets the entire screen to spaces in our current
* color */
/* skip first line (used as status monitor) */
for(i = 1; i < screen_h; i++)
memsetw (textmemptr + i * screen_w, blank, screen_w);
/* Update out virtual cursor, and then move the
* hardware cursor */
csr_x = 0;
csr_y = 0;
# if !defined(EARLY) && SCROLLBACK_BUF_SIZE
buf_x = 0;
buf_y++;
if (buf_y > SCROLLBACK_BUF_SIZE) {
buf_y = 0;
printf("Scrollback overflow!\n");
}
# endif
move_csr();
}
/**
* Scrolls up the screen
*/
void scroll()
{
unsigned blank, temp;
// Blank
blank = 0x20 | (attribute << 8);
/*
* We scroll by moving ALL the video
* memory a row higher and filling the last row
* with blanks
*/
if(cursor_y >= 25)
{
temp = cursor_y - 25 + 1;
// Move the current text chunck back by a line.
// (By the way the x2 is because memcpy copies bytes and we need shorts)
memcpy(videomem, videomem + temp * width_of_screen, (height_of_screen - temp) * width_of_screen * 2);
// Set the last line to blank
memsetw(videomem + (height_of_screen - temp) * width_of_screen, blank, width_of_screen);
cursor_y = height_of_screen - 1;
}
}
void SimpleConsole::ClearScreen()
{
memsetw( buffer, charStyle, width * height );
RefreshBuffer();
cursorX = 0;
cursorY = 0;
MoveCursor();
}
/* scroll up one line. */
void scroll(void) {
if(py >= 25) {
uint pos = py-25+1;
memcpy(vgamem, &vgamem[pos][0], (25-pos)*80*sizeof(struct vchar));
memsetw(&vgamem[25-pos][0], VC_BLANK, 80);
py = 25-1;
}
}
int
nb_name_encode(struct nb_name *np, u_char *dst)
{
u_char *name, *plen;
u_char *cp = dst;
int i, lblen;
*cp++ = NB_ENCNAMELEN;
name = np->nn_name;
if (name[0] == '*' && name[1] == 0) {
*(u_short*)cp = NBENCODE('*');
memsetw(cp + 2, NB_NAMELEN - 1, NBENCODE(' '));
cp += NB_ENCNAMELEN;
} else {
for (i = 0; *name && i < NB_NAMELEN - 1; i++, cp += 2, name++)
*(u_short*)cp = NBENCODE(toupper(*name));
i = NB_NAMELEN - i - 1;
if (i > 0) {
memsetw(cp, i, NBENCODE(' '));
cp += i * 2;
}
*(u_short*)cp = NBENCODE(np->nn_type);
cp += 2;
}
*cp = 0;
if (np->nn_scope == NULL)
return nb_encname_len(dst);
plen = cp++;
lblen = 0;
for (name = np->nn_scope; ; name++) {
if (*name == '.' || *name == 0) {
*plen = lblen;
plen = cp++;
*plen = 0;
if (*name == 0)
break;
} else {
if (lblen < NB_MAXLABLEN) {
*cp++ = *name;
lblen++;
}
}
}
return nb_encname_len(dst);
}
/**
* Allocate a block of memory.
* Fill it with zeroes.
*/
void *mem_alloc (mem_pool_t *m, size_t required)
{
void *p;
p = mem_alloc_dirty (m, required);
if (p && required > 0)
memsetw (p, 0, required);
return p;
}
static void scroll() {
if (cursor_y >= 25) {
memcpy((uint8_t*)video_memory,
(uint8_t*)&video_memory[80], 2 * 80 * 24);
memsetw(&video_memory[80 * 24],
MAKE_CHAR(' ', c_back, c_back), 80);
cursor_y = 24;
}
}
// Clears the console
void cls() {
unsigned blank = attrib | ' ';
for(int i = 0; i < CRT_SIZE; ++i)
memsetw(crt.buf, blank, CRT_SIZE);
crt.pos = 0;
update_cursor();
}
void clear(){
uint16_t blank = 0x20 | (terminal_color << 8);
memsetw(video_memory, blank, VGA_COLS*VGA_ROWS);
terminal_row = 0;
terminal_column = 0;
update_cursor();
}
// scrolls the text one line upwards if necessary
static inline void scroll()
{
if (cursor_y >= 25) {
memmoved(video_mem, video_mem+80, 80*24/2);
memsetw(video_mem+80*24, blank, 80); // fill the last row with blank
cursor_y = 24;
}
}
long
scinit ()
{
register long i, *cp;
se1_cnt = 0L; /* fragments */
size1 = E_NULL;
se2_cnt = 0L;
size2 = E_NULL;
se3_cnt = 0L;
size3 = E_NULL;
se_chg = TRUE;
frags = 0L;
spcount = (long) MAX_SE; /* storage pool */
pspool = spool;
cp = spool;
for (i = spcount; i-- > 0;)
*cp++ = 0L;
for (i = 0; i < N_SCORES; i++) /* score names */
memcpy (scname[i], "{ empty score }", 16);
memsetw (scores, 0, 2 * N_SCORES); /* score list */
memsetw (hplist, 0, 2 * N_SCORES * N_TYPES); /* header lists */
memsetw (seclist, 0, 2 * N_SCORES * N_SECTS); /* section lists */
memset (stimes, 0, 12 * N_SCORES * N_SECTS); /* section times */
t_cur = t_ctr = 0L; /* times */
t_bak = t_cur - TO_BAK;
t_fwd = t_cur + TO_FWD;
p_bak = E_NULL; /* pointers */
p_cur = E_NULL;
p_ctr = E_NULL;
p_fwd = E_NULL;
scp = E_NULL;
curscor = 0; /* current score */
cursect = 0; /* current section */
return (evleft ());
}
static void _exicc vh_vio_fillrect(EXI_DATA, u32t col, u32t line, u32t width, u32t height, char ch, u16t color) {
instance_void(vd);
if (!width || !height) return;
if (!ch) ch = ' ';
// alloc dynamic buffer
u16t *vb = new u16t[width*height];
memsetw(vb, color<<8|ch, width*height);
vh_vio_writebuf(data, 0, col, line, width, height, vb, width<<1);
delete vb;
}
void cls()
{
unsigned short i;
for(i=1;i<25;i++)
{
memsetw(pVidmem + i*gs_cons_cols,gs_win_blank,gs_cons_cols);
}
cursorx = 0;
cursory = 1;
set_cursor();
}
void cls(void) {
unsigned blank;
int i;
blank = 0x20 | (attrib << 8);
for (i = 0; i < 25; i++)
memsetw(((unsigned short *) txtMemPtr) + i * 80, blank, 80);
csr_x = 0;
csr_y = 0;
move_csr();
}
void clear()
{
unsigned blank_space = 0x20 | (attrib << 8);
for (int i = 0; i < 25; i++)
{
memsetw(textptr + i * 80, blank_space, 80);
}
csr_x = 0;
csr_y = 0;
move_cursor();
}
void scroll()
{
/* Scroll the screen up one line if needed */
if(cursory >= 25)
{
memcpy(pVidmem + gs_cons_cols,pVidmem + (gs_cons_cols << 1),80*24*2);
/* Blank out the last line */
memsetw(pVidmem + ((24) * gs_cons_cols), gs_win_blank, 80);
cursory = 24;
}
}
void scroll(void){
unsigned blank= 0x20 |(attrib << 8); //Space character, black background
if(csr_y>=25){
//after 25 lines we must scroll the screen
// memcpy(textmemptr,textmemptr+(csr_y-25+1)*80,(25-csr_y-25+1)*80*2);
memcpy(textmemptr,textmemptr+80,24*80*2);
memsetw(textmemptr+(25-(csr_y-25+1))*80,blank,80);
// csr_y=25-1;
csr_y=24;
};
};
void scroll(void) {
unsigned blank, temp;
blank = 0x20 | (attrib << 8);
if (csr_y >= 25) {
temp = csr_y - 25 + 1;
memcpyw(txtMemPtr, txtMemPtr + temp * 80, (25 - temp) * 80 * 2);
memsetw(((unsigned short *) txtMemPtr) + (25 - temp) * 80, blank, 80);
csr_y = 25 - 1;
}
}
void scroll(void)
{
unsigned blank, temp;
blank = 0x20 | (attrib << 8);
if(csr_y >= 25)
{
temp = csr_y - 25 + 1;
memcpy (textmemptr, textmemptr + temp * 80, (25 - temp) * 80 * 2);
memsetw (textmemptr + (25 - temp) * 80, blank, 80);
csr_y = 25 - 1;
}
}
void scroll(){
uint16_t blank = 0x20 | (terminal_color << 8);
size_t shift = 0;
if(terminal_row >= VGA_ROWS){
shift = terminal_row - VGA_ROWS + 1;
memcpy((uint8_t*)video_memory, (uint8_t*)(video_memory + (shift * VGA_COLS)), (VGA_ROWS - shift) * VGA_COLS * 2);
memsetw(video_memory + (VGA_ROWS - shift) * VGA_COLS, blank, VGA_COLS);
terminal_row = VGA_ROWS - 1;
}
}
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);
}
}
}
void scroll()
{
unsigned blank_space = 0x20 | (attrib << 8);
unsigned temp;
if (csr_y >= 25)
{
temp = csr_y - 25 + 1;
//memsetw(textptr + i * 80, blank_space, 80);
memcpy(textptr, textptr + temp * 80, (25 - temp) * 80 * 2);
memsetw(textptr + (25 - temp) * 80, blank_space, 80);
csr_y = 25 - 1;
}
}