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- /* 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)
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