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0001 /* NG4fls.S: SPARC optimized fls and __fls for T4 and above. 0002 * 0003 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 0004 */ 0005 0006 #include <linux/linkage.h> 0007 0008 #define LZCNT_O0_G2 \ 0009 .word 0x85b002e8 0010 0011 .text 0012 .register %g2, #scratch 0013 .register %g3, #scratch 0014 0015 ENTRY(NG4fls) 0016 LZCNT_O0_G2 !lzcnt %o0, %g2 0017 mov 64, %g3 0018 retl 0019 sub %g3, %g2, %o0 0020 ENDPROC(NG4fls) 0021 0022 ENTRY(__NG4fls) 0023 brz,pn %o0, 1f 0024 LZCNT_O0_G2 !lzcnt %o0, %g2 0025 mov 63, %g3 0026 sub %g3, %g2, %o0 0027 1: 0028 retl 0029 nop 0030 ENDPROC(__NG4fls)
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