77 lines
3 KiB
C++
77 lines
3 KiB
C++
// Copyright 2015, VIXL authors
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of ARM Limited nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "test-utils.h"
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#include <string.h>
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extern "C" {
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#include <sys/mman.h>
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}
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#include "globals-vixl.h"
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#ifdef VIXL_INCLUDE_TARGET_AARCH64
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#include "aarch64/cpu-aarch64.h"
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#endif
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namespace vixl {
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// BSD uses `MAP_ANON` instead of the Linux `MAP_ANONYMOUS`. The `MAP_ANONYMOUS`
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// alias should generally be available, but is not always, so define it manually
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// if necessary.
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#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
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#define MAP_ANONYMOUS MAP_ANON
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#endif
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void ExecuteMemory(byte* buffer, size_t size, int byte_offset) {
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void (*test_function)(void);
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VIXL_ASSERT((byte_offset >= 0) && (static_cast<size_t>(byte_offset) < size));
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VIXL_STATIC_ASSERT(sizeof(buffer) == sizeof(test_function));
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VIXL_STATIC_ASSERT(sizeof(uintptr_t) == sizeof(test_function));
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uintptr_t entry_point = reinterpret_cast<uintptr_t>(buffer);
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entry_point += byte_offset;
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memcpy(&test_function, &entry_point, sizeof(test_function));
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USE(size);
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#if defined(__aarch64__) && defined(VIXL_INCLUDE_TARGET_AARCH64)
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aarch64::CPU::EnsureIAndDCacheCoherency(buffer, size);
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#elif defined(__arm__) && \
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(defined(VIXL_INCLUDE_TARGET_A32) || defined(VIXL_INCLUDE_TARGET_T32))
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// TODO: Do not use __builtin___clear_cache and instead implement
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// `CPU::EnsureIAndDCacheCoherency` for aarch32.
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__builtin___clear_cache(buffer, reinterpret_cast<char*>(buffer) + size);
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#else
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// This helper requires a native (non-Simulator) environment.
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VIXL_ABORT_WITH_MSG("Cannot ExecuteMemory(...): unsupported platform.");
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#endif
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test_function();
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}
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} // namespace vixl
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