1 // Copyright 2013 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // Routines that are implemented in assembly in asm_{amd64,386,arm,arm64,ppc64x,s390x}.s 6 // These routines have corresponding stubs in stubs_asm.go. 7 8 // +build mips64 mips64le 9 10 package runtime 11 12 import _ "unsafe" // for go:linkname 13 14 func cmpstring(s1, s2 string) int { 15 l := len(s1) 16 if len(s2) < l { 17 l = len(s2) 18 } 19 for i := 0; i < l; i++ { 20 c1, c2 := s1[i], s2[i] 21 if c1 < c2 { 22 return -1 23 } 24 if c1 > c2 { 25 return +1 26 } 27 } 28 if len(s1) < len(s2) { 29 return -1 30 } 31 if len(s1) > len(s2) { 32 return +1 33 } 34 return 0 35 } 36 37 //go:linkname bytes_Compare bytes.Compare 38 func bytes_Compare(s1, s2 []byte) int { 39 l := len(s1) 40 if len(s2) < l { 41 l = len(s2) 42 } 43 if l == 0 || &s1[0] == &s2[0] { 44 goto samebytes 45 } 46 for i := 0; i < l; i++ { 47 c1, c2 := s1[i], s2[i] 48 if c1 < c2 { 49 return -1 50 } 51 if c1 > c2 { 52 return +1 53 } 54 } 55 samebytes: 56 if len(s1) < len(s2) { 57 return -1 58 } 59 if len(s1) > len(s2) { 60 return +1 61 } 62 return 0 63 } 64
