1 //go:build !windows 2 // +build !windows 3 4 /** 5 * Copyright 2023 ByteDance Inc. 6 * 7 * Licensed under the Apache License, Version 2.0 (the "License"); 8 * you may not use this file except in compliance with the License. 9 * You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 */ 19 20 package loader 21 22 import ( 23 `syscall` 24 ) 25 26 const ( 27 _AP = syscall.MAP_ANON | syscall.MAP_PRIVATE 28 _RX = syscall.PROT_READ | syscall.PROT_EXEC 29 _RW = syscall.PROT_READ | syscall.PROT_WRITE 30 ) 31 32 33 func mmap(nb int) uintptr { 34 if m, _, e := syscall.RawSyscall6(syscall.SYS_MMAP, 0, uintptr(nb), _RW, _AP, 0, 0); e != 0 { 35 panic(e) 36 } else { 37 return m 38 } 39 } 40 41 func mprotect(p uintptr, nb int) { 42 if _, _, err := syscall.RawSyscall(syscall.SYS_MPROTECT, p, uintptr(nb), _RX); err != 0 { 43 panic(err) 44 } 45 } 46