1// Copyright 2015 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//go:build (linux && (amd64 || arm64 || loong64)) || (freebsd && amd64)
6
7package cgo
8
9// Import "unsafe" because we use go:linkname.
10import _ "unsafe"
11
12// When using cgo, call the C library for mmap, so that we call into
13// any sanitizer interceptors. This supports using the memory
14// sanitizer with Go programs. The memory sanitizer only applies to
15// C/C++ code; this permits that code to see the Go code as normal
16// program addresses that have been initialized.
17
18// To support interceptors that look for both mmap and munmap,
19// also call the C library for munmap.
20
21//go:cgo_import_static x_cgo_mmap
22//go:linkname x_cgo_mmap x_cgo_mmap
23//go:linkname _cgo_mmap _cgo_mmap
24var x_cgo_mmap byte
25var _cgo_mmap = &x_cgo_mmap
26
27//go:cgo_import_static x_cgo_munmap
28//go:linkname x_cgo_munmap x_cgo_munmap
29//go:linkname _cgo_munmap _cgo_munmap
30var x_cgo_munmap byte
31var _cgo_munmap = &x_cgo_munmap
32