// 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 || loong64 || 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();

}

}