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feat: add basic utilities and more system calls
1 | .text |
2 | |
3 | .globl plibc_init |
4 | .type plibc_init, @function |
5 | |
6 | plibc_init: |
7 | call get_errno_location |
8 | xorl %edi, %edi |
9 | movl %edi, (%rax) |
10 | ret |
11 | |
12 | .globl plibc_deinit |
13 | .type plibc_deinit, @function |
14 | |
15 | plibc_deinit: |
16 | ret |
17 | |
18 | .globl plibc_deinit_sfds |
19 | .type plibc_deinit_sfds, @function |
20 | |
21 | plibc_deinit_sfds: |
22 | push %rbp |
23 | mov %rsp, %rbp |
24 | call plibc_sfds_status |
25 | push %rax |
26 | mov $3, %rcx |
27 | .plibc_deinit_sfds.loop_start: |
28 | mov %rcx, %rdi |
29 | dec %rdi |
30 | mov -8(%rbp), %rax |
31 | movb (%rax, %rdi), %al |
32 | test %al, %al |
33 | jz .plibc_deinit_sfds.loop_repeat |
34 | push %rcx |
35 | call close |
36 | pop %rcx |
37 | .plibc_deinit_sfds.loop_repeat: |
38 | loop .plibc_deinit_sfds.loop_start |
39 | .plibc_deinit_sfds.loop_end: |
40 | mov %rbp, %rsp |
41 | pop %rbp |
42 | ret |
43 | |
44 | .section .note.GNU-stack,"",@progbits |
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