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 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
