diff options
Diffstat (limited to 'src/init')
| -rw-r--r-- | src/init/linker.ld | 1 | ||||
| -rw-r--r-- | src/init/main.c | 4 | ||||
| -rw-r--r-- | src/init/syscall.s | 9 |
3 files changed, 14 insertions, 0 deletions
diff --git a/src/init/linker.ld b/src/init/linker.ld index 9f3f4b5..a59308d 100644 --- a/src/init/linker.ld +++ b/src/init/linker.ld @@ -6,6 +6,7 @@ SECTIONS . = 2M; .text BLOCK(4K) : ALIGN(4K) { + *(.text.startup) *(.text) } .rodata BLOCK(4K) : ALIGN(4K) diff --git a/src/init/main.c b/src/init/main.c index ce1600c..cb3fa1d 100644 --- a/src/init/main.c +++ b/src/init/main.c @@ -1,6 +1,10 @@ #include <stdint.h> +void _syscall(); + int main() { + _syscall(); + // change the colors of VGA text // doesn't require a lot of code, but still shows that it's working uint8_t *vga = (void*) 0xB8000; diff --git a/src/init/syscall.s b/src/init/syscall.s new file mode 100644 index 0000000..ebd9d0e --- /dev/null +++ b/src/init/syscall.s @@ -0,0 +1,9 @@ +.section .text +.global _syscall +.type _syscall, @function +_syscall: + mov %esp, %ecx + mov $_syscall_ret, %edx + sysenter +_syscall_ret: + ret |