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// 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.
// +build linux,amd64 linux,arm64
#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();
}
}
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