1// Copyright 2015, VIXL authors
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are met:
6//
7//   * Redistributions of source code must retain the above copyright notice,
8//     this list of conditions and the following disclaimer.
9//   * Redistributions in binary form must reproduce the above copyright notice,
10//     this list of conditions and the following disclaimer in the documentation
11//     and/or other materials provided with the distribution.
12//   * Neither the name of ARM Limited nor the names of its contributors may be
13//     used to endorse or promote products derived from this software without
14//     specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
17// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
20// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27#include "test-utils.h"
28
29extern "C" {
30#include <sys/mman.h>
31}
32
33#include "globals-vixl.h"
34#include "aarch64/cpu-aarch64.h"
35
36namespace vixl {
37
38// BSD uses `MAP_ANON` instead of the Linux `MAP_ANONYMOUS`. The `MAP_ANONYMOUS`
39// alias should generally be available, but is not always, so define it manually
40// if necessary.
41#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
42#define MAP_ANONYMOUS MAP_ANON
43#endif
44
45
46void ExecuteMemory(byte* buffer, size_t size, int offset) {
47  void (*test_function)(void);
48
49  VIXL_ASSERT((offset >= 0) && (static_cast<size_t>(offset) < size));
50  VIXL_STATIC_ASSERT(sizeof(buffer) == sizeof(test_function));
51  VIXL_STATIC_ASSERT(sizeof(uintptr_t) == sizeof(test_function));
52  uintptr_t entry_point = reinterpret_cast<uintptr_t>(buffer);
53  entry_point += offset;
54  memcpy(&test_function, &entry_point, sizeof(test_function));
55
56  USE(size);
57
58#if defined(__aarch64__) && defined(VIXL_INCLUDE_TARGET_AARCH64)
59  aarch64::CPU::EnsureIAndDCacheCoherency(buffer, size);
60#elif defined(__arm__) && \
61    (defined(VIXL_INCLUDE_TARGET_A32) || defined(VIXL_INCLUDE_TARGET_T32))
62  // TODO: Do not use __builtin___clear_cache and instead implement
63  // `CPU::EnsureIAndDCacheCoherency` for aarch32.
64  __builtin___clear_cache(buffer, reinterpret_cast<char*>(buffer) + size);
65#endif
66  test_function();
67}
68
69}  // namespace vixl
70