gbdk-2020 | GameBoy Development Kit |
| download: https://git.y1.nz/archives/gbdk.tar.gz | |
| README | Files | Log | Refs | LICENSE |
gbdk-lib/libc/asm/sm83/shift.s
1 .module shift
2
3 .area _HOME
4
5 ;;
6 __rrulong_rrx_s::
7 ld hl,#2
8 add hl,sp
9
10 ld a,(hl+)
11 ld e, a
12 ld a,(hl+)
13 ld d, a
14 ld a,(hl+)
15 ld c, a
16 ld a,(hl+)
17 ld b, a
18 ld a,(hl)
19
20 ld l,c
21 ld h,b
22 1$:
23 or a,a
24 ret z
25
26 rr h
27 rr l
28 rr d
29 rr e
30
31 dec a
32 jp 1$
33
34 __rrslong_rrx_s::
35 ld hl,#2
36 add hl,sp
37
38 ld a,(hl+)
39 ld e, a
40 ld a,(hl+)
41 ld d, a
42 ld a,(hl+)
43 ld c, a
44 ld a,(hl+)
45 ld b, a
46 ld a,(hl)
47
48 ld l,c
49 ld h,b
50 1$:
51 or a,a
52 ret z
53
54 sra h
55 rr l
56 rr d
57 rr e
58
59 dec a
60 jp 1$
61
62 __rlslong_rrx_s::
63 __rlulong_rrx_s::
64 ld hl,#2
65 add hl,sp
66
67 ld a,(hl+)
68 ld e, a
69 ld a,(hl+)
70 ld d, a
71 ld a,(hl+)
72 ld c, a
73 ld a,(hl+)
74 ld b, a
75 ld a,(hl)
76
77 ld l,c
78 ld h,b
79 1$:
80 or a,a
81 ret z
82
83 rl e
84 rl d
85 rl l
86 rl h
87
88 dec a
89 jp 1$
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