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