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VirtualFileSystem class builds inside Kernel.

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This commit is contained in:
Andreas Kling 2018-10-17 11:40:58 +02:00
parent 9171521752
commit d2425495ca
8 changed files with 147 additions and 97 deletions
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172
Kernel/VGA.cpp
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@ -11,55 +11,50 @@ PRIVATE BYTE current_attr = 0x07;
PRIVATE volatile WORD soft_cursor;
PRIVATE void print_num( DWORD );
PRIVATE void print_hex( DWORD, BYTE fields );
static void printSignedNumber(int);
template<typename PutChFunc> static int printNumber(PutChFunc, char*&, DWORD);
template<typename PutChFunc> static int printHex(PutChFunc, char*&, DWORD, BYTE fields);
template<typename PutChFunc> static int printSignedNumber(PutChFunc, char*&, int);
PRIVATE void
putch( char ch )
static void vga_putch(char*, char ch)
{
WORD row;
switch( ch )
{
case '\n':
row = soft_cursor / 80;
if( row == 23 )
{
memcpy( vga_mem, vga_mem + 160, 160 * 23 );
memset( vga_mem + (160 * 23), 0, 160 );
soft_cursor = row * 80;
}
else
soft_cursor = (row + 1) * 80;
return;
default:
vga_mem[soft_cursor * 2] = ch;
vga_mem[soft_cursor * 2 + 1] = current_attr;
soft_cursor++;
switch (ch) {
case '\n':
row = soft_cursor / 80;
if (row == 23) {
memcpy( vga_mem, vga_mem + 160, 160 * 23 );
memset( vga_mem + (160 * 23), 0, 160 );
soft_cursor = row * 80;
} else {
soft_cursor = (row + 1) * 80;
}
return;
default:
vga_mem[soft_cursor * 2] = ch;
vga_mem[soft_cursor * 2 + 1] = current_attr;
++soft_cursor;
}
row = soft_cursor / 80;
if ((row >= 24 && current->handle() != IPC::Handle::PanelTask)) {
memcpy( vga_mem, vga_mem + 160, 160 * 23 );
memset( vga_mem + (160 * 23), 0, 160 );
memcpy(vga_mem, vga_mem + 160, 160 * 23);
memset(vga_mem + (160 * 23), 0, 160);
soft_cursor = 23 * 80;
}
}
PUBLIC void
kprintf( const char *fmt, ... )
template<typename PutChFunc>
int kprintfInternal(PutChFunc putch, char* buffer, const char*& fmt, char*& ap)
{
const char *p;
va_list ap;
soft_cursor = vga_get_cursor();
va_start( ap, fmt );
int ret = 0;
char* bufptr = buffer;
for( p = fmt; *p; ++p )
{
if( *p == '%' && *(p + 1) )
{
for (p = fmt; *p; ++p) {
if (*p == '%' && *(p + 1)) {
++p;
switch( *p )
{
@ -68,105 +63,136 @@ kprintf( const char *fmt, ... )
const char* sp = va_arg(ap, const char*);
//ASSERT(sp != nullptr);
if (!sp) {
putch('<');
putch('N');
putch('u');
putch('L');
putch('>');
putch(bufptr, '<');
putch(bufptr, 'N');
putch(bufptr, 'u');
putch(bufptr, 'L');
putch(bufptr, '>');
ret += 5;
} else {
for (; *sp; ++sp)
putch(*sp);
for (; *sp; ++sp) {
putch(bufptr, *sp);
++ret;
}
}
}
break;
case 'd':
printSignedNumber(va_arg(ap, int));
ret += printSignedNumber(putch, bufptr, va_arg(ap, int));
break;
case 'u':
print_num( va_arg( ap, DWORD ));
ret += printNumber(putch, bufptr, va_arg(ap, DWORD));
break;
case 'x':
print_hex( va_arg( ap, DWORD ), 8 );
ret += printHex(putch, bufptr, va_arg(ap, DWORD), 8);
break;
case 'b':
print_hex( va_arg( ap, int ), 2 );
ret += printHex(putch, bufptr, va_arg(ap, int), 2);
break;
case 'c':
putch( (char)va_arg( ap, int ));
putch(bufptr, (char)va_arg(ap, int));
++ret;
break;
case 'p':
putch( '0' );
putch( 'x' );
print_hex( va_arg( ap, DWORD ), 8 );
putch(bufptr, '0');
putch(bufptr, 'x');
ret += 2;
ret += printHex(putch, bufptr, va_arg(ap, DWORD), 8);
break;
}
}
else
{
putch( *p );
else {
putch(bufptr, *p);
++ret;
}
}
/* va_arg( ap, type ); */
va_end( ap );
vga_set_cursor( soft_cursor );
return ret;
}
PRIVATE void
print_hex( DWORD number, BYTE fields )
int kprintf(const char* fmt, ...)
{
va_list ap;
va_start(ap, fmt);
soft_cursor = vga_get_cursor();
int ret = kprintfInternal(vga_putch, nullptr, fmt, ap);
vga_set_cursor(soft_cursor);
va_end(ap);
return ret;
}
static void buffer_putch(char* bufptr, char ch)
{
*bufptr++ = ch;
}
int ksprintf(char* buffer, const char* fmt, ...)
{
va_list ap;
va_start(ap, fmt);
int ret = kprintfInternal(buffer_putch, buffer, fmt, ap);
va_end(ap);
return ret;
}
template<typename PutChFunc>
int printHex(PutChFunc putch, char*& bufptr, DWORD number, BYTE fields)
{
static const char h[] = {
'0','1','2','3','4','5','6','7',
'8','9','a','b','c','d','e','f'
};
int ret = 0;
BYTE shr_count = fields * 4;
while( shr_count )
{
while (shr_count) {
shr_count -= 4;
putch( h[(number >> shr_count) & 0x0F] );
putch(bufptr, h[(number >> shr_count) & 0x0F]);
++ret;
}
return ret;
}
PRIVATE void
print_num( DWORD number )
template<typename PutChFunc>
int printNumber(PutChFunc putch, char*& bufptr, DWORD number)
{
DWORD divisor = 1000000000;
char ch;
char padding = 1;
int ret = 0;
for( ;; )
{
for (;;) {
ch = '0' + (number / divisor);
number %= divisor;
if( ch != '0' )
if (ch != '0')
padding = 0;
if( !padding || divisor == 1 )
putch( ch );
if (!padding || divisor == 1) {
putch(bufptr, ch);
++ret;
}
if( divisor == 1 )
if (divisor == 1)
break;
divisor /= 10;
}
return ret;
}
static void printSignedNumber(int number)
template<typename PutChFunc>
static int printSignedNumber(PutChFunc putch, char*& bufptr, int number)
{
if (number < 0) {
putch('-');
print_num(0 - number);
} else {
print_num(number);
putch(bufptr, '-');
return printNumber(putch, bufptr, 0 - number) + 1;
}
return printNumber(putch, bufptr, number);
}
PUBLIC void