40 lines
916 B
C
40 lines
916 B
C
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build (linux && (amd64 || arm64 || loong64 || ppc64le)) || (freebsd && amd64)
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#include "libcgo.h"
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uintptr_t
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x_cgo_mmap(void *addr, uintptr_t length, int32_t prot, int32_t flags, int32_t fd, uint32_t offset) {
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void *p;
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_cgo_tsan_acquire();
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p = mmap(addr, length, prot, flags, fd, offset);
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_cgo_tsan_release();
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if (p == MAP_FAILED) {
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/* This is what the Go code expects on failure. */
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return (uintptr_t)errno;
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}
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return (uintptr_t)p;
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}
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void
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x_cgo_munmap(void *addr, uintptr_t length) {
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int r;
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_cgo_tsan_acquire();
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r = munmap(addr, length);
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_cgo_tsan_release();
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if (r < 0) {
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/* The Go runtime is not prepared for munmap to fail. */
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abort();
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}
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}
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