void FBLinear8::RevRect(int x1,int y1,int x2,int y2) {
assert( x1 >= 0 && x1 < Width() && y1 >=0 && y1 < Height());
assert( x2 >= 0 && x2 < Width() && y2 >=0 && y2 < Height());
assert(x1 <= x2 && y1 <= y2);
__u8* dest = (__u8*)mpBuf + mNextLine * y1 + x1;
int height = y2 - y1 + 1;
int width = x2 - x1 + 1;
int cnt;
__u8* dest8;
__u16* dest16;
__u32 *dest32;
for(; height--; dest += mNextLine) {
dest32 = (__u32*)dest;
for (cnt = width/4; cnt--;) {
fb_writel(fb_readl(dest32) ^ 0x0f0f0f0f, dest32++);
}
if (width & 2) {
dest16 = (__u16*)dest32;
fb_writew(fb_readw(dest16) ^ 0x0f0f, dest16++);
dest32 = (__u32*)dest16;
}
if (width & 1) {
dest8 = (__u8*)dest32;
fb_writeb(fb_readb(dest8) ^ 0x0f, dest8);
}
}
}
static inline unsigned long copy_from_user16(void *to, const void *from,
unsigned long n)
{
u16 *dst = (u16 *) to;
u16 *src = (u16 *) from;
while (n > 1) {
u16 v;
if (__get_user(v, src))
return n;
fb_writew(v, dst);
src++, dst++;
n -= 2;
}
if (n) {
u8 v;
if (__get_user(v, ((u8 *) src)))
return n;
fb_writeb(v, dst);
}
return 0;
}
void FBLinear8::DrawChar(int x,int y,int fg,int bg,struct CharBitMap* pFont) {
__u32 eorx,fgx,bgx;
fgx = fg;
bgx = bg;
fgx |= (fgx << 8);
fgx |= (fgx << 16);
bgx |= (bgx << 8);
bgx |= (bgx << 16);
eorx = fgx ^ bgx;
__u8* dest = ((__u8*)mpBuf + mNextLine * y + x);
__u32* dest32;
__u16* tmp_half;
char* cdat = pFont->pBuf;
int rows, cnt;
for (rows = mBlockHeight; rows-- ; dest += mNextLine) {
dest32 = (__u32*)dest;
for (cnt = (pFont->w)/8; cnt--;) {
fb_writel((nibbletab_cfb8[*cdat >> 4] & eorx) ^ bgx, dest32++);
fb_writel((nibbletab_cfb8[*cdat & 0xf] & eorx) ^ bgx, dest32++);
cdat++;
}
if (pFont->isMulti8)
continue;
if (pFont->w & 4) {
fb_writel((nibbletab_cfb8[*cdat >> 4] & eorx) ^ bgx, dest32++);
}
if (pFont->w & 2) {
fb_writew((nibbletab_cfb8[*cdat & 0xc] & eorx) ^ bgx, dest32);
tmp_half = (__u16*) dest32;
dest32 = (__u32*) ++tmp_half;
}
if (pFont->w & 1) {
fb_writeb((*cdat & 2) ? fg : bg, (__u8*)dest32);
}
cdat++;
}