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Began work FAT32 drivers in KBOOT

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Tom-on
2025-01-10 11:30:24 +01:00
parent 23ab5d7bfb
commit 295e3d9c18
8 changed files with 220 additions and 27 deletions
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boot/stage2/stdio.c
+8 -6
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@@ -8,9 +8,7 @@ static uint32_t xpos;
static uint32_t ypos;
static uint8_t attr;
void setAttr(uint8_t newattr) {
attr = newattr;
}
void setAttr(uint8_t newattr) { attr = newattr; }
void setCursor(uint32_t row, uint32_t col) {
xpos = col;
@@ -98,7 +96,6 @@ int vsnprintf(void* buf, size_t len, char* fmt, va_list args) {
char pad = ' ';
int width = 0;
// TODO: padding
if (*fmt == '0') pad = '0';
while (*fmt >= '0' && *fmt <= '9') {
width *= 10;
@@ -110,14 +107,19 @@ int vsnprintf(void* buf, size_t len, char* fmt, va_list args) {
switch (*fmt++) {
case 'd': s = itoa(va_arg(args, int), 10); goto string;
case 'x': s = itoa(va_arg(args, int), 16); goto string;
case 's': s = va_arg(args, char*);
string: while (*s != '\0' && pos < len - 1) str[pos++] = *s++; break;
case 's': s = va_arg(args, char*); goto string;
case 'c': if (pos < len - 1) str[pos++] = va_arg(args, char); break;
case '%': if (pos < len - 1) str[pos++] = '%'; break;
default:
if (pos < len - 1) str[pos++] = '%';
if (pos < len - 1) str[pos++] = *(fmt - 1);
break;
string:
width -= strlen(s) - 1;
if (width < 0) width = 0;
while (width-- && pos < len - 1) str[pos++] = pad;
while (*s && pos < len - 1) str[pos++] = *s++;
break;
}
}