blob: 2d0991e5b03417c4993e118e6f424385d4ec54e1 (
plain) (
blame)
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
|
/* NG4fls.S: SPARC optimized fls and __fls for T4 and above.
*
* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
*/
#include <linux/linkage.h>
#define LZCNT_O0_G2 \
.word 0x85b002e8
.text
.register %g2, #scratch
.register %g3, #scratch
ENTRY(NG4fls)
LZCNT_O0_G2 !lzcnt %o0, %g2
mov 64, %g3
retl
sub %g3, %g2, %o0
ENDPROC(NG4fls)
ENTRY(__NG4fls)
brz,pn %o0, 1f
LZCNT_O0_G2 !lzcnt %o0, %g2
mov 63, %g3
sub %g3, %g2, %o0
1:
retl
nop
ENDPROC(__NG4fls)
|
