1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2006-2008 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// This module contains the architecture-specific code. This make the rest of 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// the code less dependent on differences between different processor 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// architecture. 31a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// The classes have the same definition for all architectures. The 32a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// implementation for a particular architecture is put in cpu_<arch>.cc. 33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// The build system then uses the implementation for the target architecture. 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifndef V8_CPU_H_ 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define V8_CPU_H_ 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 39257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch#include "allocation.h" 40257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// ---------------------------------------------------------------------------- 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// CPU 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// This class has static methods for the architecture specific functions. Add 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// methods here to cope with differences between the supported architectures. 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// For each architecture the file cpu_<arch>.cc contains the implementation of 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// these functions. 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockclass CPU : public AllStatic { 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block public: 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Initializes the cpu architecture support. Called once at VM startup. 563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch static void SetUp(); 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 588b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch static bool SupportsCrankshaft(); 598b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Flush instruction cache. 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static void FlushICache(void* start, size_t size); 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Try to activate a system level debugger. 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block static void DebugBreak(); 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // V8_CPU_H_ 70