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
29 extern "C" {
30 #include <sys/mman.h>
31 }
32
33 #include "globals-vixl.h"
34 #include "aarch64/cpu-aarch64.h"
35
36 namespace 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
ExecuteMemory(byte * buffer,size_t size,int offset)46 void 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