diff options
| author | Marvin Borner | 2019-10-31 00:49:00 +0100 |
|---|---|---|
| committer | Marvin Borner | 2019-10-31 00:49:00 +0100 |
| commit | 7d5a9792e57b4088cce5cc97837eb04016b57a4d (patch) | |
| tree | 11eac7aa426f3cb597a3ebd2b08cef0d99e9c0cf /src/kernel/boot.asm | |
| parent | 91439462f5ad77eb128658229724c9a3660a2068 (diff) | |
Implemented basic syscalls and user mode
Doesn't completely work right now
Diffstat (limited to 'src/kernel/boot.asm')
| -rw-r--r-- | src/kernel/boot.asm | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/kernel/boot.asm b/src/kernel/boot.asm index fad05ff..8f24066 100644 --- a/src/kernel/boot.asm +++ b/src/kernel/boot.asm @@ -50,6 +50,25 @@ stublet: %include "src/kernel/interact.asm" +global switch_to_user +switch_to_user: + cli + mov ax,0x23 + mov ds,ax + mov es,ax + mov fs,ax + mov gs,ax + + mov eax,esp + push 0x23 + push eax + pushf + pop eax + or eax, 0x200 + push eax + push 0x1B + iret + ; Store the stack SECTION .bss resb 0x2000 ; Reserve 8KiB |