634fb9152c
Added support for more precise break points when debugging and stepping. To achieve that additional nop instructions are inserted where breaking would otherwise be impossible. The number of nop instructions inserted are sufficient to make place for patching with a call to a debug break code stub. On Intel that is 5 nop's for 32-bit and 13 for 64-bit. Om ARM 3 nop instructions (12 bytes) are required. In order to avoid inserting nop's in to many places a simple ast checker have been added to check whether there are breakable code in a statement or expression. If it is possible to break in an expression no additional break enabeling code is inserted. Added break locations to the true and false part of a conditional expression. Added stepping tests to cover more constructs. These changes are only in the full compiler. Changed the default value for the option --debugger in teh d8 shell from true to false. The reason for this is that with --debugger turned on the full compiler will be used for all code in when running d8, which can be unexpeceted. Review URL: http://codereview.chromium.org/2693002 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4820 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
263 lines
12 KiB
C++
263 lines
12 KiB
C++
// Copyright 2006-2008 the V8 project authors. All rights reserved.
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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
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (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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#ifndef V8_BUILTINS_H_
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#define V8_BUILTINS_H_
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namespace v8 {
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namespace internal {
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// Specifies extra arguments required by a C++ builtin.
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enum BuiltinExtraArguments {
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NO_EXTRA_ARGUMENTS = 0,
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NEEDS_CALLED_FUNCTION = 1
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};
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// Define list of builtins implemented in C++.
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#define BUILTIN_LIST_C(V) \
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V(Illegal, NO_EXTRA_ARGUMENTS) \
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\
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V(EmptyFunction, NO_EXTRA_ARGUMENTS) \
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\
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V(ArrayCodeGeneric, NO_EXTRA_ARGUMENTS) \
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\
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V(ArrayPush, NO_EXTRA_ARGUMENTS) \
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V(ArrayPop, NO_EXTRA_ARGUMENTS) \
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V(ArrayShift, NO_EXTRA_ARGUMENTS) \
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V(ArrayUnshift, NO_EXTRA_ARGUMENTS) \
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V(ArraySlice, NO_EXTRA_ARGUMENTS) \
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V(ArraySplice, NO_EXTRA_ARGUMENTS) \
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V(ArrayConcat, NO_EXTRA_ARGUMENTS) \
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\
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V(HandleApiCall, NEEDS_CALLED_FUNCTION) \
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V(FastHandleApiCall, NO_EXTRA_ARGUMENTS) \
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V(HandleApiCallConstruct, NEEDS_CALLED_FUNCTION) \
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V(HandleApiCallAsFunction, NO_EXTRA_ARGUMENTS) \
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V(HandleApiCallAsConstructor, NO_EXTRA_ARGUMENTS)
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// Define list of builtins implemented in assembly.
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#define BUILTIN_LIST_A(V) \
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V(ArgumentsAdaptorTrampoline, BUILTIN, UNINITIALIZED) \
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V(JSConstructCall, BUILTIN, UNINITIALIZED) \
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V(JSConstructStubGeneric, BUILTIN, UNINITIALIZED) \
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V(JSConstructStubApi, BUILTIN, UNINITIALIZED) \
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V(JSEntryTrampoline, BUILTIN, UNINITIALIZED) \
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V(JSConstructEntryTrampoline, BUILTIN, UNINITIALIZED) \
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\
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V(LoadIC_Miss, BUILTIN, UNINITIALIZED) \
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V(KeyedLoadIC_Miss, BUILTIN, UNINITIALIZED) \
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V(StoreIC_Miss, BUILTIN, UNINITIALIZED) \
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V(KeyedStoreIC_Miss, BUILTIN, UNINITIALIZED) \
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\
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V(LoadIC_Initialize, LOAD_IC, UNINITIALIZED) \
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V(LoadIC_PreMonomorphic, LOAD_IC, PREMONOMORPHIC) \
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V(LoadIC_Normal, LOAD_IC, MONOMORPHIC) \
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V(LoadIC_ArrayLength, LOAD_IC, MONOMORPHIC) \
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V(LoadIC_StringLength, LOAD_IC, MONOMORPHIC) \
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V(LoadIC_FunctionPrototype, LOAD_IC, MONOMORPHIC) \
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V(LoadIC_Megamorphic, LOAD_IC, MEGAMORPHIC) \
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\
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V(KeyedLoadIC_Initialize, KEYED_LOAD_IC, UNINITIALIZED) \
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V(KeyedLoadIC_PreMonomorphic, KEYED_LOAD_IC, PREMONOMORPHIC) \
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V(KeyedLoadIC_Generic, KEYED_LOAD_IC, MEGAMORPHIC) \
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V(KeyedLoadIC_String, KEYED_LOAD_IC, MEGAMORPHIC) \
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V(KeyedLoadIC_ExternalByteArray, KEYED_LOAD_IC, MEGAMORPHIC) \
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V(KeyedLoadIC_ExternalUnsignedByteArray, KEYED_LOAD_IC, MEGAMORPHIC) \
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V(KeyedLoadIC_ExternalShortArray, KEYED_LOAD_IC, MEGAMORPHIC) \
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V(KeyedLoadIC_ExternalUnsignedShortArray, KEYED_LOAD_IC, MEGAMORPHIC) \
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V(KeyedLoadIC_ExternalIntArray, KEYED_LOAD_IC, MEGAMORPHIC) \
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V(KeyedLoadIC_ExternalUnsignedIntArray, KEYED_LOAD_IC, MEGAMORPHIC) \
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V(KeyedLoadIC_ExternalFloatArray, KEYED_LOAD_IC, MEGAMORPHIC) \
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V(KeyedLoadIC_IndexedInterceptor, KEYED_LOAD_IC, MEGAMORPHIC) \
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\
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V(StoreIC_Initialize, STORE_IC, UNINITIALIZED) \
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V(StoreIC_ArrayLength, STORE_IC, MONOMORPHIC) \
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V(StoreIC_Megamorphic, STORE_IC, MEGAMORPHIC) \
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\
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V(KeyedStoreIC_Initialize, KEYED_STORE_IC, UNINITIALIZED) \
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V(KeyedStoreIC_Generic, KEYED_STORE_IC, MEGAMORPHIC) \
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V(KeyedStoreIC_ExternalByteArray, KEYED_STORE_IC, MEGAMORPHIC) \
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V(KeyedStoreIC_ExternalUnsignedByteArray, KEYED_STORE_IC, MEGAMORPHIC) \
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V(KeyedStoreIC_ExternalShortArray, KEYED_STORE_IC, MEGAMORPHIC) \
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V(KeyedStoreIC_ExternalUnsignedShortArray, KEYED_STORE_IC, MEGAMORPHIC) \
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V(KeyedStoreIC_ExternalIntArray, KEYED_STORE_IC, MEGAMORPHIC) \
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V(KeyedStoreIC_ExternalUnsignedIntArray, KEYED_STORE_IC, MEGAMORPHIC) \
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V(KeyedStoreIC_ExternalFloatArray, KEYED_STORE_IC, MEGAMORPHIC) \
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\
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/* Uses KeyedLoadIC_Initialize; must be after in list. */ \
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V(FunctionCall, BUILTIN, UNINITIALIZED) \
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V(FunctionApply, BUILTIN, UNINITIALIZED) \
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\
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V(ArrayCode, BUILTIN, UNINITIALIZED) \
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V(ArrayConstructCode, BUILTIN, UNINITIALIZED)
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#ifdef ENABLE_DEBUGGER_SUPPORT
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// Define list of builtins used by the debugger implemented in assembly.
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#define BUILTIN_LIST_DEBUG_A(V) \
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V(Return_DebugBreak, BUILTIN, DEBUG_BREAK) \
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V(ConstructCall_DebugBreak, BUILTIN, DEBUG_BREAK) \
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V(StubNoRegisters_DebugBreak, BUILTIN, DEBUG_BREAK) \
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V(LoadIC_DebugBreak, LOAD_IC, DEBUG_BREAK) \
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V(KeyedLoadIC_DebugBreak, KEYED_LOAD_IC, DEBUG_BREAK) \
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V(StoreIC_DebugBreak, STORE_IC, DEBUG_BREAK) \
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V(KeyedStoreIC_DebugBreak, KEYED_STORE_IC, DEBUG_BREAK) \
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V(Slot_DebugBreak, BUILTIN, DEBUG_BREAK) \
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V(PlainReturn_LiveEdit, BUILTIN, DEBUG_BREAK) \
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V(FrameDropper_LiveEdit, BUILTIN, DEBUG_BREAK)
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#else
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#define BUILTIN_LIST_DEBUG_A(V)
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#endif
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// Define list of builtins implemented in JavaScript.
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#define BUILTINS_LIST_JS(V) \
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V(EQUALS, 1) \
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V(STRICT_EQUALS, 1) \
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V(COMPARE, 2) \
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V(ADD, 1) \
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V(SUB, 1) \
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V(MUL, 1) \
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V(DIV, 1) \
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V(MOD, 1) \
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V(BIT_OR, 1) \
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V(BIT_AND, 1) \
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V(BIT_XOR, 1) \
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V(UNARY_MINUS, 0) \
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V(BIT_NOT, 0) \
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V(SHL, 1) \
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V(SAR, 1) \
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V(SHR, 1) \
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V(DELETE, 1) \
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V(IN, 1) \
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V(INSTANCE_OF, 1) \
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V(GET_KEYS, 0) \
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V(FILTER_KEY, 1) \
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V(CALL_NON_FUNCTION, 0) \
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V(CALL_NON_FUNCTION_AS_CONSTRUCTOR, 0) \
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V(TO_OBJECT, 0) \
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V(TO_NUMBER, 0) \
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V(TO_STRING, 0) \
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V(STRING_ADD_LEFT, 1) \
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V(STRING_ADD_RIGHT, 1) \
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V(APPLY_PREPARE, 1) \
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V(APPLY_OVERFLOW, 1)
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class ObjectVisitor;
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class Builtins : public AllStatic {
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public:
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// Generate all builtin code objects. Should be called once during
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// VM initialization.
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static void Setup(bool create_heap_objects);
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static void TearDown();
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// Garbage collection support.
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static void IterateBuiltins(ObjectVisitor* v);
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// Disassembler support.
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static const char* Lookup(byte* pc);
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enum Name {
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#define DEF_ENUM_C(name, ignore) name,
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#define DEF_ENUM_A(name, kind, state) name,
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BUILTIN_LIST_C(DEF_ENUM_C)
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BUILTIN_LIST_A(DEF_ENUM_A)
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BUILTIN_LIST_DEBUG_A(DEF_ENUM_A)
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#undef DEF_ENUM_C
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#undef DEF_ENUM_A
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builtin_count
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};
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enum CFunctionId {
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#define DEF_ENUM_C(name, ignore) c_##name,
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BUILTIN_LIST_C(DEF_ENUM_C)
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#undef DEF_ENUM_C
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cfunction_count
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};
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enum JavaScript {
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#define DEF_ENUM(name, ignore) name,
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BUILTINS_LIST_JS(DEF_ENUM)
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#undef DEF_ENUM
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id_count
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};
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static Code* builtin(Name name) {
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// Code::cast cannot be used here since we access builtins
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// during the marking phase of mark sweep. See IC::Clear.
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return reinterpret_cast<Code*>(builtins_[name]);
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}
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static Address builtin_address(Name name) {
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return reinterpret_cast<Address>(&builtins_[name]);
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}
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static Address c_function_address(CFunctionId id) {
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return c_functions_[id];
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}
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static const char* GetName(JavaScript id) { return javascript_names_[id]; }
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static int GetArgumentsCount(JavaScript id) { return javascript_argc_[id]; }
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static Handle<Code> GetCode(JavaScript id, bool* resolved);
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static int NumberOfJavaScriptBuiltins() { return id_count; }
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private:
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// The external C++ functions called from the code.
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static Address c_functions_[cfunction_count];
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// Note: These are always Code objects, but to conform with
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// IterateBuiltins() above which assumes Object**'s for the callback
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// function f, we use an Object* array here.
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static Object* builtins_[builtin_count];
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static const char* names_[builtin_count];
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static const char* javascript_names_[id_count];
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static int javascript_argc_[id_count];
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static void Generate_Adaptor(MacroAssembler* masm,
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CFunctionId id,
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BuiltinExtraArguments extra_args);
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static void Generate_JSConstructCall(MacroAssembler* masm);
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static void Generate_JSConstructStubGeneric(MacroAssembler* masm);
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static void Generate_JSConstructStubApi(MacroAssembler* masm);
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static void Generate_JSEntryTrampoline(MacroAssembler* masm);
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static void Generate_JSConstructEntryTrampoline(MacroAssembler* masm);
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static void Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm);
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static void Generate_FunctionCall(MacroAssembler* masm);
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static void Generate_FunctionApply(MacroAssembler* masm);
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static void Generate_ArrayCode(MacroAssembler* masm);
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static void Generate_ArrayConstructCode(MacroAssembler* masm);
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};
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} } // namespace v8::internal
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#endif // V8_BUILTINS_H_
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