diff options
Diffstat (limited to 'boot/fake_syscall_entry.S')
| -rw-r--r-- | boot/fake_syscall_entry.S | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/boot/fake_syscall_entry.S b/boot/fake_syscall_entry.S index ff2428d..bc175c1 100644 --- a/boot/fake_syscall_entry.S +++ b/boot/fake_syscall_entry.S @@ -1,18 +1,27 @@ .section .text +.global fake_syscall_entry +.global fake_syscall_return + .extern fake_syscall_handler -.global fake_syscall_entry fake_syscall_entry: - hlt + hlt; -.global fake_syscall_return fake_syscall_return: cli +fake_syscall_swap: + mov %cs, %rax + pushq %rax + pushq %rdx + mov %ds, %rax + pushq %rax + sub $16, %rsp + sgdt (%rsp) + mov %rsp, (%rsi) mov %rdi, %rsp lgdt (%rsp) add $16, %rsp - movw (%rsp), %ds movw (%rsp), %es movw (%rsp), %fs |