zra@google.com
974d4f1392
This allows us to remove selecting different versions of inline assembly depending on ABI, thumb, etc. in our code. R=regis@google.com Review URL: https://codereview.chromium.org//26543002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@28378 260f80e4-7a28-3924-810f-c04153c831b5
54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h"
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#if defined(TARGET_ARCH_ARM)
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#if defined(HOST_ARCH_ARM)
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#include <sys/syscall.h> /* NOLINT */
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#include <unistd.h> /* NOLINT */
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#endif
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#include "vm/cpu.h"
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namespace dart {
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void CPU::FlushICache(uword start, uword size) {
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#if defined(HOST_ARCH_ARM)
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// Nothing to do. Flushing no instructions.
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if (size == 0) {
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return;
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}
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// ARM recommends using the gcc intrinsic __clear_cache on Linux, and the
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// library call cacheflush from unistd.h on Android:
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// blogs.arm.com/software-enablement/141-caches-and-self-modifying-code/
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#if defined(__linux__) && !defined(ANDROID)
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extern void __clear_cache(char*, char*);
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char* beg = reinterpret_cast<char*>(start);
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char* end = reinterpret_cast<char*>(start + size);
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::__clear_cache(beg, end);
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#elif defined(ANDROID)
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cacheflush(start, start + size, 0);
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#else
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#error FlushICache only tested/supported on Linux and Android
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#endif
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#endif
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}
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const char* CPU::Id() {
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return
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#if !defined(HOST_ARCH_ARM)
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"sim"
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#endif // !defined(HOST_ARCH_ARM)
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"arm";
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}
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} // namespace dart
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#endif // defined TARGET_ARCH_ARM
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