-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathft_list_remove_if_bonus.s
88 lines (80 loc) · 1.95 KB
/
ft_list_remove_if_bonus.s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
# **************************************************************************** #
# #
# :::::::: #
# ft_list_remove_if_bonus.s :+: :+: #
# +:+ #
# By: ikole <ikole@student.codam.nl> +#+ #
# +#+ #
# Created: 2020/03/10 02:08:38 by ikole #+# #+# #
# Updated: 2020/03/10 02:08:40 by ikole ######## odam.nl #
# #
# **************************************************************************** #
global _ft_list_remove_if
extern _free
section .text
_ft_list_remove_if:
cmp rdi, 0
je return
cmp rdx, 0
je return
mov r8, [rdi] ; current pointer
mov r9, r8 ; previous pointer
jmp compare
next:
mov r9, r8
mov r8, [r8 + 8] ; move to next list element
cmp r8, 0
je return
compare:
push rdi
push rsi
push rdx
push r9
push r8
mov rdi, [r8]
call rdx ; compare args
pop r8
pop r9
pop rdx
pop rsi
pop rdi
cmp rax, 0 ; check result
jne next
delete:
cmp r8, [rdi]
je head_pointer
mov r10, [r8 + 8]
mov [r9 + 8], r10 ; set previous next pointer
mov qword[r8 + 8], 0
push rdi
push r8
push r9
push rdx
push rsi
mov rdi, r8
call _free ; free old list
pop rsi
pop rdx
pop r9
pop r8
pop rdi
mov r8, r9
jmp compare
head_pointer:
mov r10, [r8 + 8]
mov [rdi], r10 ; set previous next pointer
push rdi
push r8
push r9
push rdx
push rsi
mov rdi, r8
call _free ; free old list
pop rsi
pop rdx
pop r9
pop r8
pop rdi
jmp next
return:
ret