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| author | Ada Christine <adachristine18@gmail.com> | 2025-01-31 00:48:54 +0000 |
|---|---|---|
| committer | Ada Christine <adachristine18@gmail.com> | 2025-01-31 00:48:54 +0000 |
| commit | 2fb3f208bd2e739a8968afb23d22e13b6660ca22 (patch) | |
| tree | 4bf02b06ed27c2726f675f752e064211df934323 /boot/fake_syscall_entry.S | |
| parent | 0d2ddecc9aeb232746b76b4eebdb1381053a8951 (diff) | |
spread around defs, x86 asm and bits libs
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 |