From 43a123c1ae6613b3efeed291fa552ecd909d3acf Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:23:18 +0200 Subject: Adding upstream version 1.20.14. Signed-off-by: Daniel Baumann --- src/runtime/cgo/mmap.go | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 src/runtime/cgo/mmap.go (limited to 'src/runtime/cgo/mmap.go') diff --git a/src/runtime/cgo/mmap.go b/src/runtime/cgo/mmap.go new file mode 100644 index 0000000..2f7e83b --- /dev/null +++ b/src/runtime/cgo/mmap.go @@ -0,0 +1,31 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build (linux && amd64) || (linux && arm64) || (freebsd && amd64) + +package cgo + +// Import "unsafe" because we use go:linkname. +import _ "unsafe" + +// When using cgo, call the C library for mmap, so that we call into +// any sanitizer interceptors. This supports using the memory +// sanitizer with Go programs. The memory sanitizer only applies to +// C/C++ code; this permits that code to see the Go code as normal +// program addresses that have been initialized. + +// To support interceptors that look for both mmap and munmap, +// also call the C library for munmap. + +//go:cgo_import_static x_cgo_mmap +//go:linkname x_cgo_mmap x_cgo_mmap +//go:linkname _cgo_mmap _cgo_mmap +var x_cgo_mmap byte +var _cgo_mmap = &x_cgo_mmap + +//go:cgo_import_static x_cgo_munmap +//go:linkname x_cgo_munmap x_cgo_munmap +//go:linkname _cgo_munmap _cgo_munmap +var x_cgo_munmap byte +var _cgo_munmap = &x_cgo_munmap -- cgit v1.2.3