1*4882a593Smuzhiyun/* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun/* 3*4882a593Smuzhiyun * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc 4*4882a593Smuzhiyun * generic strncmp routine. 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun#include <linux/linkage.h> 8*4882a593Smuzhiyun#include <asm/export.h> 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun .text 11*4882a593SmuzhiyunENTRY(strncmp) 12*4882a593Smuzhiyun mov %o0, %g3 13*4882a593Smuzhiyun mov 0, %o3 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun cmp %o2, 3 16*4882a593Smuzhiyun ble 7f 17*4882a593Smuzhiyun mov 0, %g2 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun sra %o2, 2, %o4 20*4882a593Smuzhiyun ldub [%g3], %o3 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun0: 23*4882a593Smuzhiyun ldub [%o1], %g2 24*4882a593Smuzhiyun add %g3, 1, %g3 25*4882a593Smuzhiyun and %o3, 0xff, %o0 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun cmp %o0, 0 28*4882a593Smuzhiyun be 8f 29*4882a593Smuzhiyun add %o1, 1, %o1 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun cmp %o0, %g2 32*4882a593Smuzhiyun be,a 1f 33*4882a593Smuzhiyun ldub [%g3], %o3 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun retl 36*4882a593Smuzhiyun sub %o0, %g2, %o0 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun1: 39*4882a593Smuzhiyun ldub [%o1], %g2 40*4882a593Smuzhiyun add %g3,1, %g3 41*4882a593Smuzhiyun and %o3, 0xff, %o0 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun cmp %o0, 0 44*4882a593Smuzhiyun be 8f 45*4882a593Smuzhiyun add %o1, 1, %o1 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun cmp %o0, %g2 48*4882a593Smuzhiyun be,a 1f 49*4882a593Smuzhiyun ldub [%g3], %o3 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun retl 52*4882a593Smuzhiyun sub %o0, %g2, %o0 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun1: 55*4882a593Smuzhiyun ldub [%o1], %g2 56*4882a593Smuzhiyun add %g3, 1, %g3 57*4882a593Smuzhiyun and %o3, 0xff, %o0 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun cmp %o0, 0 60*4882a593Smuzhiyun be 8f 61*4882a593Smuzhiyun add %o1, 1, %o1 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun cmp %o0, %g2 64*4882a593Smuzhiyun be,a 1f 65*4882a593Smuzhiyun ldub [%g3], %o3 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun retl 68*4882a593Smuzhiyun sub %o0, %g2, %o0 69*4882a593Smuzhiyun 70*4882a593Smuzhiyun1: 71*4882a593Smuzhiyun ldub [%o1], %g2 72*4882a593Smuzhiyun add %g3, 1, %g3 73*4882a593Smuzhiyun and %o3, 0xff, %o0 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun cmp %o0, 0 76*4882a593Smuzhiyun be 8f 77*4882a593Smuzhiyun add %o1, 1, %o1 78*4882a593Smuzhiyun 79*4882a593Smuzhiyun cmp %o0, %g2 80*4882a593Smuzhiyun be 1f 81*4882a593Smuzhiyun add %o4, -1, %o4 82*4882a593Smuzhiyun 83*4882a593Smuzhiyun retl 84*4882a593Smuzhiyun sub %o0, %g2, %o0 85*4882a593Smuzhiyun 86*4882a593Smuzhiyun1: 87*4882a593Smuzhiyun 88*4882a593Smuzhiyun cmp %o4, 0 89*4882a593Smuzhiyun bg,a 0b 90*4882a593Smuzhiyun ldub [%g3], %o3 91*4882a593Smuzhiyun 92*4882a593Smuzhiyun b 7f 93*4882a593Smuzhiyun and %o2, 3, %o2 94*4882a593Smuzhiyun 95*4882a593Smuzhiyun9: 96*4882a593Smuzhiyun ldub [%o1], %g2 97*4882a593Smuzhiyun add %g3, 1, %g3 98*4882a593Smuzhiyun and %o3, 0xff, %o0 99*4882a593Smuzhiyun 100*4882a593Smuzhiyun cmp %o0, 0 101*4882a593Smuzhiyun be 8f 102*4882a593Smuzhiyun add %o1, 1, %o1 103*4882a593Smuzhiyun 104*4882a593Smuzhiyun cmp %o0, %g2 105*4882a593Smuzhiyun be 7f 106*4882a593Smuzhiyun add %o2, -1, %o2 107*4882a593Smuzhiyun 108*4882a593Smuzhiyun8: 109*4882a593Smuzhiyun retl 110*4882a593Smuzhiyun sub %o0, %g2, %o0 111*4882a593Smuzhiyun 112*4882a593Smuzhiyun7: 113*4882a593Smuzhiyun cmp %o2, 0 114*4882a593Smuzhiyun bg,a 9b 115*4882a593Smuzhiyun ldub [%g3], %o3 116*4882a593Smuzhiyun 117*4882a593Smuzhiyun and %g2, 0xff, %o0 118*4882a593Smuzhiyun retl 119*4882a593Smuzhiyun sub %o3, %o0, %o0 120*4882a593SmuzhiyunENDPROC(strncmp) 121*4882a593SmuzhiyunEXPORT_SYMBOL(strncmp) 122