diff options
| author | Anton Kling <anton@kling.gg> | 2023-10-30 22:12:14 +0100 |
|---|---|---|
| committer | Anton Kling <anton@kling.gg> | 2023-10-31 00:18:38 +0100 |
| commit | 8a9208612eec8ddae4c418485d848ecfa0613699 (patch) | |
| tree | 2f4b29200c2f0c19ae52f45bdb9b38a41b356e30 /kernel/signal.s | |
| parent | ca76600acc8bf7a02346efa5bd8f17072210ec01 (diff) | |
Meta: Move kernel and userland to their own folders.
This is to allow both the kernel and the userland to share certain
header files and to make the folder structure a bit more clear.
Diffstat (limited to 'kernel/signal.s')
| -rw-r--r-- | kernel/signal.s | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/signal.s b/kernel/signal.s new file mode 100644 index 0000000..38604a4 --- /dev/null +++ b/kernel/signal.s @@ -0,0 +1,18 @@ +.intel_syntax noprefix +.global jump_signal_handler +jump_signal_handler: + mov ebx, [esp+8] + mov ecx, [esp+4] + mov ax, (4 * 8) | 3 # ring 3 data with bottom 2 bits set for ring 3 + mov ds, ax + mov es, ax + mov fs, ax + mov gs, ax # SS is handled by iret + + mov eax, ebx + push (4 * 8) | 3 # data selector + push eax + pushf + push (3 * 8) | 3 + push ecx + iret |