diff options
Diffstat (limited to 'src/kernel')
-rw-r--r-- | src/kernel/link.ld | 15 | ||||
-rw-r--r-- | src/kernel/main.c | 7 | ||||
-rw-r--r-- | src/kernel/vga.c | 14 | ||||
-rw-r--r-- | src/kernel/vga.h | 3 |
4 files changed, 39 insertions, 0 deletions
diff --git a/src/kernel/link.ld b/src/kernel/link.ld new file mode 100644 index 0000000..1fcff40 --- /dev/null +++ b/src/kernel/link.ld @@ -0,0 +1,15 @@ +OUTPUT_FORMAT(binary) +OUTPUT_ARCH(i386) + +SECTIONS { + . = 0x00030000; + .entry : { + */main.o(.text) + } + .bin : { + *(.text) + *(.rodata) + *(.data) + *(.bss) + } +}
\ No newline at end of file diff --git a/src/kernel/main.c b/src/kernel/main.c new file mode 100644 index 0000000..1a8b2f4 --- /dev/null +++ b/src/kernel/main.c @@ -0,0 +1,7 @@ +#include <stdint.h> +#include "vga.h" + +void main() { + while (1) + vga_printsz("Hello! "); +}
\ No newline at end of file diff --git a/src/kernel/vga.c b/src/kernel/vga.c new file mode 100644 index 0000000..d0170c0 --- /dev/null +++ b/src/kernel/vga.c @@ -0,0 +1,14 @@ +#include <stdint.h> + +#define VGA_START (uint16_t *)0x000b8000 +#define VGA_END (VGA_START + 80 * 25) +uint16_t *cursor = VGA_START; +uint16_t color = 0x1f00; + +void vga_printsz(uint8_t *sz) { + while (*sz) { + *(cursor++) = color | *(sz++); + if (cursor == VGA_END) + cursor = VGA_START; + } +}
\ No newline at end of file diff --git a/src/kernel/vga.h b/src/kernel/vga.h new file mode 100644 index 0000000..47ac1fb --- /dev/null +++ b/src/kernel/vga.h @@ -0,0 +1,3 @@ +#include <stdint.h> + +void vga_printsz(uint8_t *sz);
\ No newline at end of file |