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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
commit | ccd992355df7192993c666236047820244914598 (patch) | |
tree | f00fea65147227b7743083c6148396f74cd66935 /src/runtime/cgo/gcc_mmap.c | |
parent | Initial commit. (diff) | |
download | golang-1.21-ccd992355df7192993c666236047820244914598.tar.xz golang-1.21-ccd992355df7192993c666236047820244914598.zip |
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/cgo/gcc_mmap.c')
-rw-r--r-- | src/runtime/cgo/gcc_mmap.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/runtime/cgo/gcc_mmap.c b/src/runtime/cgo/gcc_mmap.c new file mode 100644 index 0000000..1fbd5e8 --- /dev/null +++ b/src/runtime/cgo/gcc_mmap.c @@ -0,0 +1,39 @@ +// 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 || arm64 || ppc64le)) || (freebsd && amd64) + +#include <errno.h> +#include <stdint.h> +#include <stdlib.h> +#include <sys/mman.h> + +#include "libcgo.h" + +uintptr_t +x_cgo_mmap(void *addr, uintptr_t length, int32_t prot, int32_t flags, int32_t fd, uint32_t offset) { + void *p; + + _cgo_tsan_acquire(); + p = mmap(addr, length, prot, flags, fd, offset); + _cgo_tsan_release(); + if (p == MAP_FAILED) { + /* This is what the Go code expects on failure. */ + return (uintptr_t)errno; + } + return (uintptr_t)p; +} + +void +x_cgo_munmap(void *addr, uintptr_t length) { + int r; + + _cgo_tsan_acquire(); + r = munmap(addr, length); + _cgo_tsan_release(); + if (r < 0) { + /* The Go runtime is not prepared for munmap to fail. */ + abort(); + } +} |