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
89
|
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL )
.section ".note.GNU-stack", "", %progbits
.text
.arm
/**
* Logical shift left
*
* @v r1:r0 Value to shift
* @v r2 Shift amount
* @ret r1:r0 Shifted value
*/
.section ".text.__aeabi_llsl", "ax", %progbits
.globl __aeabi_llsl
.type __aeabi_llsl, %function
__aeabi_llsl:
/* r3 = ( shift - 32 ) */
subs r3, r2, #32
/* If shift >= 32, then
* high = ( low << ( shift - 32 ) )
*/
movpl r1, r0, lsl r3
/* If shift < 32, then
* high = ( ( high << shift ) | ( low >> ( 32 - shift ) ) )
*/
movmi r1, r1, lsl r2
rsbmi r3, r2, #32
orrmi r1, r1, r0, lsr r3
/* low = ( low << shift ) */
mov r0, r0, lsl r2
bx lr
.size __aeabi_llsl, . - __aeabi_llsl
/**
* Logical shift right
*
* @v r1:r0 Value to shift
* @v r2 Shift amount
* @ret r1:r0 Shifted value
*/
.section ".text.__aeabi_llsr", "ax", %progbits
.globl __aeabi_llsr
.type __aeabi_llsr, %function
__aeabi_llsr:
/* r3 = ( shift - 32 ) */
subs r3, r2, #32
/* If shift >= 32, then
* low = ( high >> ( shift - 32 ) )
*/
movpl r0, r1, lsr r3
/* If shift < 32, then
* low = ( ( low >> shift ) | ( high << ( 32 - shift ) ) )
*/
movmi r0, r0, lsr r2
rsbmi r3, r2, #32
orrmi r0, r0, r1, lsl r3
/* high = ( high >> shift ) */
mov r1, r1, lsr r2
bx lr
.size __aeabi_llsr, . - __aeabi_llsr
/**
* Arithmetic shift right
*
* @v r1:r0 Value to shift
* @v r2 Shift amount
* @ret r1:r0 Shifted value
*/
.section ".text.__aeabi_lasr", "ax", %progbits
.globl __aeabi_lasr
.type __aeabi_lasr, %function
__aeabi_lasr:
/* r3 = ( shift - 32 ) */
subs r3, r2, #32
/* If shift >= 32, then
* low = ( high >> ( shift - 32 ) )
*/
movpl r0, r1, asr r3
/* If shift < 32, then
* low = ( ( low >> shift ) | ( high << ( 32 - shift ) ) )
*/
movmi r0, r0, lsr r2
rsbmi r3, r2, #32
orrmi r0, r0, r1, lsl r3
/* high = ( high >> shift ) */
mov r1, r1, asr r2
bx lr
.size __aeabi_lasr, . - __aeabi_lasr
|
