1*4882a593Smuzhiyun/* NG4fls.S: SPARC optimized fls and __fls for T4 and above. 2*4882a593Smuzhiyun * 3*4882a593Smuzhiyun * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun#include <linux/linkage.h> 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun#define LZCNT_O0_G2 \ 9*4882a593Smuzhiyun .word 0x85b002e8 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun .text 12*4882a593Smuzhiyun .register %g2, #scratch 13*4882a593Smuzhiyun .register %g3, #scratch 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunENTRY(NG4fls) 16*4882a593Smuzhiyun LZCNT_O0_G2 !lzcnt %o0, %g2 17*4882a593Smuzhiyun mov 64, %g3 18*4882a593Smuzhiyun retl 19*4882a593Smuzhiyun sub %g3, %g2, %o0 20*4882a593SmuzhiyunENDPROC(NG4fls) 21*4882a593Smuzhiyun 22*4882a593SmuzhiyunENTRY(__NG4fls) 23*4882a593Smuzhiyun brz,pn %o0, 1f 24*4882a593Smuzhiyun LZCNT_O0_G2 !lzcnt %o0, %g2 25*4882a593Smuzhiyun mov 63, %g3 26*4882a593Smuzhiyun sub %g3, %g2, %o0 27*4882a593Smuzhiyun1: 28*4882a593Smuzhiyun retl 29*4882a593Smuzhiyun nop 30*4882a593SmuzhiyunENDPROC(__NG4fls) 31