namespace internal {
-const int kPointerSize = sizeof(void*); // NOLINT
-const int kIntSize = sizeof(int); // NOLINT
+static const int kApiPointerSize = sizeof(void*); // NOLINT
+static const int kApiIntSize = sizeof(int); // NOLINT
// Tag information for HeapObject.
const int kHeapObjectTag = 1;
}
};
-const int kSmiShiftSize = SmiConstants<kPointerSize>::kSmiShiftSize;
-const int kSmiValueSize = SmiConstants<kPointerSize>::kSmiValueSize;
+const int kSmiShiftSize = SmiConstants<kApiPointerSize>::kSmiShiftSize;
+const int kSmiValueSize = SmiConstants<kApiPointerSize>::kSmiValueSize;
template <size_t ptr_size> struct InternalConstants;
// Internal constants for 32-bit systems.
template <> struct InternalConstants<4> {
- static const int kStringResourceOffset = 3 * kPointerSize;
+ static const int kStringResourceOffset = 3 * kApiPointerSize;
};
// Internal constants for 64-bit systems.
template <> struct InternalConstants<8> {
- static const int kStringResourceOffset = 3 * kPointerSize;
+ static const int kStringResourceOffset = 3 * kApiPointerSize;
};
/**
// These values match non-compiler-dependent values defined within
// the implementation of v8.
static const int kHeapObjectMapOffset = 0;
- static const int kMapInstanceTypeOffset = kPointerSize + kIntSize;
+ static const int kMapInstanceTypeOffset = kApiPointerSize + kApiIntSize;
static const int kStringResourceOffset =
- InternalConstants<kPointerSize>::kStringResourceOffset;
+ InternalConstants<kApiPointerSize>::kStringResourceOffset;
- static const int kProxyProxyOffset = kPointerSize;
- static const int kJSObjectHeaderSize = 3 * kPointerSize;
+ static const int kProxyProxyOffset = kApiPointerSize;
+ static const int kJSObjectHeaderSize = 3 * kApiPointerSize;
static const int kFullStringRepresentationMask = 0x07;
static const int kExternalTwoByteRepresentationTag = 0x02;
}
static inline int SmiValue(internal::Object* value) {
- return SmiConstants<kPointerSize>::SmiToInt(value);
+ return SmiConstants<kApiPointerSize>::SmiToInt(value);
}
static inline int GetInstanceType(internal::Object* obj) {
// If the object is a plain JSObject, which is the common case,
// we know where to find the internal fields and can return the
// value directly.
- int offset = I::kJSObjectHeaderSize + (internal::kPointerSize * index);
+ int offset = I::kJSObjectHeaderSize + (internal::kApiPointerSize * index);
O* value = I::ReadField<O*>(obj, offset);
O** result = HandleScope::CreateHandle(value);
return Local<Value>(reinterpret_cast<Value*>(result));
// If the object is a plain JSObject, which is the common case,
// we know where to find the internal fields and can return the
// value directly.
- int offset = I::kJSObjectHeaderSize + (internal::kPointerSize * index);
+ int offset = I::kJSObjectHeaderSize + (internal::kApiPointerSize * index);
O* value = I::ReadField<O*>(obj, offset);
return I::GetExternalPointer(value);
}
#include <stdlib.h>
-#include "v8.h"
+#include "../include/v8stdint.h"
+#include "globals.h"
+#include "checks.h"
+#include "allocation.h"
+#include "utils.h"
namespace v8 {
namespace internal {
-
void* Malloced::New(size_t size) {
ASSERT(NativeAllocationChecker::allocation_allowed());
void* result = malloc(size);
- if (result == NULL) V8::FatalProcessOutOfMemory("Malloced operator new");
+ if (result == NULL) {
+ v8::internal::FatalProcessOutOfMemory("Malloced operator new");
+ }
return result;
}
void Malloced::FatalProcessOutOfMemory() {
- V8::FatalProcessOutOfMemory("Out of memory");
+ v8::internal::FatalProcessOutOfMemory("Out of memory");
}
char* StrDup(const char* str) {
int length = StrLength(str);
char* result = NewArray<char>(length + 1);
- memcpy(result, str, length * kCharSize);
+ memcpy(result, str, length);
result[length] = '\0';
return result;
}
int length = StrLength(str);
if (n < length) length = n;
char* result = NewArray<char>(length + 1);
- memcpy(result, str, length * kCharSize);
+ memcpy(result, str, length);
result[length] = '\0';
return result;
}
}
ASSERT(free_list_.next_ != &free_list_);
ASSERT(free_list_.previous_ != &free_list_);
+
size = (size + kPointerSize - 1) & ~(kPointerSize - 1);
// Search for exact fit.
for (PreallocatedStorage* storage = free_list_.next_;
namespace v8 {
namespace internal {
+// Called when allocation routines fail to allocate.
+// This function should not return, but should terminate the current
+// processing.
+void FatalProcessOutOfMemory(const char* message);
// A class that controls whether allocation is allowed. This is for
// the C++ heap only!
}
-
static FatalErrorCallback& GetFatalErrorHandler() {
if (exception_behavior == NULL) {
exception_behavior = DefaultFatalErrorHandler;
}
+void i::FatalProcessOutOfMemory(const char* location) {
+ i::V8::FatalProcessOutOfMemory(location, false);
+}
+
// When V8 cannot allocated memory FatalProcessOutOfMemory is called.
// The default fatal error handler is called and execution is stopped.
#include <string.h>
-#include "../include/v8stdint.h"
-
extern "C" void V8_Fatal(const char* file, int line, const char* format, ...);
void API_Fatal(const char* location, const char* format, ...);
-// Copyright 2006-2009 the V8 project authors. All rights reserved.
+// Copyright 2010 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
const int kCharSize = sizeof(char); // NOLINT
const int kShortSize = sizeof(short); // NOLINT
+const int kIntSize = sizeof(int); // NOLINT
const int kDoubleSize = sizeof(double); // NOLINT
const int kIntptrSize = sizeof(intptr_t); // NOLINT
-// kIntSize and kPointerSize are defined in include/v8.h.
+const int kPointerSize = sizeof(void*); // NOLINT
#if V8_HOST_ARCH_64_BIT
const int kPointerSizeLog2 = 3;
const uintptr_t kUintptrAllBitsSet = 0xFFFFFFFFu;
#endif
-// Mask for the sign bit in a smi.
-const intptr_t kSmiSignMask = kIntptrSignBit;
-
-const int kObjectAlignmentBits = kPointerSizeLog2;
-const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits;
-const intptr_t kObjectAlignmentMask = kObjectAlignment - 1;
-
-// Desired alignment for pointers.
-const intptr_t kPointerAlignment = (1 << kPointerSizeLog2);
-const intptr_t kPointerAlignmentMask = kPointerAlignment - 1;
-
-// Desired alignment for maps.
-#if V8_HOST_ARCH_64_BIT
-const intptr_t kMapAlignmentBits = kObjectAlignmentBits;
-#else
-const intptr_t kMapAlignmentBits = kObjectAlignmentBits + 3;
-#endif
-const intptr_t kMapAlignment = (1 << kMapAlignmentBits);
-const intptr_t kMapAlignmentMask = kMapAlignment - 1;
-
-// Desired alignment for generated code is 32 bytes (to improve cache line
-// utilization).
-const int kCodeAlignmentBits = 5;
-const intptr_t kCodeAlignment = 1 << kCodeAlignmentBits;
-const intptr_t kCodeAlignmentMask = kCodeAlignment - 1;
-
-// Tag information for Failure.
-const int kFailureTag = 3;
-const int kFailureTagSize = 2;
-const intptr_t kFailureTagMask = (1 << kFailureTagSize) - 1;
-
-
const int kBitsPerByte = 8;
const int kBitsPerByteLog2 = 3;
const int kBitsPerPointer = kPointerSize * kBitsPerByte;
const int kBinary32MantissaBits = 23;
const int kBinary32ExponentShift = 23;
-// Zap-value: The value used for zapping dead objects.
-// Should be a recognizable hex value tagged as a heap object pointer.
-#ifdef V8_HOST_ARCH_64_BIT
-const Address kZapValue =
- reinterpret_cast<Address>(V8_UINT64_C(0xdeadbeedbeadbeed));
-const Address kHandleZapValue =
- reinterpret_cast<Address>(V8_UINT64_C(0x1baddead0baddead));
-const Address kFromSpaceZapValue =
- reinterpret_cast<Address>(V8_UINT64_C(0x1beefdad0beefdad));
-const uint64_t kDebugZapValue = 0xbadbaddbbadbaddb;
-#else
-const Address kZapValue = reinterpret_cast<Address>(0xdeadbeed);
-const Address kHandleZapValue = reinterpret_cast<Address>(0xbaddead);
-const Address kFromSpaceZapValue = reinterpret_cast<Address>(0xbeefdad);
-const uint32_t kDebugZapValue = 0xbadbaddb;
-#endif
-
-
-// Number of bits to represent the page size for paged spaces. The value of 13
-// gives 8K bytes per page.
-const int kPageSizeBits = 13;
-
-// On Intel architecture, cache line size is 64 bytes.
-// On ARM it may be less (32 bytes), but as far this constant is
-// used for aligning data, it doesn't hurt to align on a greater value.
-const int kProcessorCacheLineSize = 64;
-
-// Constants relevant to double precision floating point numbers.
-
-// Quiet NaNs have bits 51 to 62 set, possibly the sign bit, and no
-// other bits set.
-const uint64_t kQuietNaNMask = static_cast<uint64_t>(0xfff) << 51;
-// If looking only at the top 32 bits, the QNaN mask is bits 19 to 30.
-const uint32_t kQuietNaNHighBitsMask = 0xfff << (51 - 32);
-
-
-// -----------------------------------------------------------------------------
-// Forward declarations for frequently used classes
-// (sorted alphabetically)
-
-class AccessorInfo;
-class Allocation;
-class Arguments;
-class Assembler;
-class AssertNoAllocation;
-class BreakableStatement;
-class Code;
-class CodeGenerator;
-class CodeStub;
-class Context;
-class Debug;
-class Debugger;
-class DebugInfo;
-class Descriptor;
-class DescriptorArray;
-class Expression;
-class ExternalReference;
-class FixedArray;
-class FunctionEntry;
-class FunctionLiteral;
-class FunctionTemplateInfo;
-class NumberDictionary;
-class StringDictionary;
-class FreeStoreAllocationPolicy;
-template <typename T> class Handle;
-class Heap;
-class HeapObject;
-class IC;
-class InterceptorInfo;
-class IterationStatement;
-class JSArray;
-class JSFunction;
-class JSObject;
-class LargeObjectSpace;
-template <typename T, class P = FreeStoreAllocationPolicy> class List;
-class LookupResult;
-class MacroAssembler;
-class Map;
-class MapSpace;
-class MarkCompactCollector;
-class NewSpace;
-class NodeVisitor;
-class Object;
-class MaybeObject;
-class OldSpace;
-class Property;
-class Proxy;
-class RegExpNode;
-struct RegExpCompileData;
-class RegExpTree;
-class RegExpCompiler;
-class RegExpVisitor;
-class Scope;
-template<class Allocator = FreeStoreAllocationPolicy> class ScopeInfo;
-class SerializedScopeInfo;
-class Script;
-class Slot;
-class Smi;
-template <typename Config, class Allocator = FreeStoreAllocationPolicy>
- class SplayTree;
-class Statement;
-class String;
-class Struct;
-class SwitchStatement;
-class AstVisitor;
-class Variable;
-class VariableProxy;
-class RelocInfo;
-class Deserializer;
-class MessageLocation;
-class ObjectGroup;
-class TickSample;
-class VirtualMemory;
-class Mutex;
-
-typedef bool (*WeakSlotCallback)(Object** pointer);
-
-// -----------------------------------------------------------------------------
-// Miscellaneous
-
-// NOTE: SpaceIterator depends on AllocationSpace enumeration values being
-// consecutive.
-enum AllocationSpace {
- NEW_SPACE, // Semispaces collected with copying collector.
- OLD_POINTER_SPACE, // May contain pointers to new space.
- OLD_DATA_SPACE, // Must not have pointers to new space.
- CODE_SPACE, // No pointers to new space, marked executable.
- MAP_SPACE, // Only and all map objects.
- CELL_SPACE, // Only and all cell objects.
- LO_SPACE, // Promoted large objects.
-
- FIRST_SPACE = NEW_SPACE,
- LAST_SPACE = LO_SPACE,
- FIRST_PAGED_SPACE = OLD_POINTER_SPACE,
- LAST_PAGED_SPACE = CELL_SPACE
-};
-const int kSpaceTagSize = 3;
-const int kSpaceTagMask = (1 << kSpaceTagSize) - 1;
-
-
-// A flag that indicates whether objects should be pretenured when
-// allocated (allocated directly into the old generation) or not
-// (allocated in the young generation if the object size and type
-// allows).
-enum PretenureFlag { NOT_TENURED, TENURED };
-
-enum GarbageCollector { SCAVENGER, MARK_COMPACTOR };
-
-enum Executability { NOT_EXECUTABLE, EXECUTABLE };
-
-enum VisitMode { VISIT_ALL, VISIT_ALL_IN_SCAVENGE, VISIT_ONLY_STRONG };
-
-// Flag indicating whether code is built into the VM (one of the natives files).
-enum NativesFlag { NOT_NATIVES_CODE, NATIVES_CODE };
-
-
-// A CodeDesc describes a buffer holding instructions and relocation
-// information. The instructions start at the beginning of the buffer
-// and grow forward, the relocation information starts at the end of
-// the buffer and grows backward.
-//
-// |<--------------- buffer_size ---------------->|
-// |<-- instr_size -->| |<-- reloc_size -->|
-// +==================+========+==================+
-// | instructions | free | reloc info |
-// +==================+========+==================+
-// ^
-// |
-// buffer
-
-struct CodeDesc {
- byte* buffer;
- int buffer_size;
- int instr_size;
- int reloc_size;
- Assembler* origin;
-};
-
-
-// Callback function on object slots, used for iterating heap object slots in
-// HeapObjects, global pointers to heap objects, etc. The callback allows the
-// callback function to change the value of the slot.
-typedef void (*ObjectSlotCallback)(HeapObject** pointer);
-
-
-// Callback function used for iterating objects in heap spaces,
-// for example, scanning heap objects.
-typedef int (*HeapObjectCallback)(HeapObject* obj);
-
-
-// Callback function used for checking constraints when copying/relocating
-// objects. Returns true if an object can be copied/relocated from its
-// old_addr to a new_addr.
-typedef bool (*ConstraintCallback)(Address new_addr, Address old_addr);
-
-
-// Callback function on inline caches, used for iterating over inline caches
-// in compiled code.
-typedef void (*InlineCacheCallback)(Code* code, Address ic);
-
-
-// State for inline cache call sites. Aliased as IC::State.
-enum InlineCacheState {
- // Has never been executed.
- UNINITIALIZED,
- // Has been executed but monomorhic state has been delayed.
- PREMONOMORPHIC,
- // Has been executed and only one receiver type has been seen.
- MONOMORPHIC,
- // Like MONOMORPHIC but check failed due to prototype.
- MONOMORPHIC_PROTOTYPE_FAILURE,
- // Multiple receiver types have been seen.
- MEGAMORPHIC,
- // Special states for debug break or step in prepare stubs.
- DEBUG_BREAK,
- DEBUG_PREPARE_STEP_IN
-};
-
-
-enum InLoopFlag {
- NOT_IN_LOOP,
- IN_LOOP
-};
-
-
-enum CallFunctionFlags {
- NO_CALL_FUNCTION_FLAGS = 0,
- RECEIVER_MIGHT_BE_VALUE = 1 << 0 // Receiver might not be a JSObject.
-};
-
-
-enum InlineCacheHolderFlag {
- OWN_MAP, // For fast properties objects.
- PROTOTYPE_MAP // For slow properties objects (except GlobalObjects).
-};
-
-
-// Type of properties.
-// Order of properties is significant.
-// Must fit in the BitField PropertyDetails::TypeField.
-// A copy of this is in mirror-debugger.js.
-enum PropertyType {
- NORMAL = 0, // only in slow mode
- FIELD = 1, // only in fast mode
- CONSTANT_FUNCTION = 2, // only in fast mode
- CALLBACKS = 3,
- INTERCEPTOR = 4, // only in lookup results, not in descriptors.
- MAP_TRANSITION = 5, // only in fast mode
- CONSTANT_TRANSITION = 6, // only in fast mode
- NULL_DESCRIPTOR = 7, // only in fast mode
- // All properties before MAP_TRANSITION are real.
- FIRST_PHANTOM_PROPERTY_TYPE = MAP_TRANSITION,
- // There are no IC stubs for NULL_DESCRIPTORS. Therefore,
- // NULL_DESCRIPTOR can be used as the type flag for IC stubs for
- // nonexistent properties.
- NONEXISTENT = NULL_DESCRIPTOR
-};
-
-
-// Whether to remove map transitions and constant transitions from a
-// DescriptorArray.
-enum TransitionFlag {
- REMOVE_TRANSITIONS,
- KEEP_TRANSITIONS
-};
-
-
-// Union used for fast testing of specific double values.
-union DoubleRepresentation {
- double value;
- int64_t bits;
- DoubleRepresentation(double x) { value = x; }
-};
-
-
-// Union used for customized checking of the IEEE double types
-// inlined within v8 runtime, rather than going to the underlying
-// platform headers and libraries
-union IeeeDoubleLittleEndianArchType {
- double d;
- struct {
- unsigned int man_low :32;
- unsigned int man_high :20;
- unsigned int exp :11;
- unsigned int sign :1;
- } bits;
-};
-
-
-union IeeeDoubleBigEndianArchType {
- double d;
- struct {
- unsigned int sign :1;
- unsigned int exp :11;
- unsigned int man_high :20;
- unsigned int man_low :32;
- } bits;
-};
-
-
-// AccessorCallback
-struct AccessorDescriptor {
- MaybeObject* (*getter)(Object* object, void* data);
- MaybeObject* (*setter)(JSObject* object, Object* value, void* data);
- void* data;
-};
-
-
-// Logging and profiling.
-// A StateTag represents a possible state of the VM. When compiled with
-// ENABLE_VMSTATE_TRACKING, the logger maintains a stack of these.
-// Creating a VMState object enters a state by pushing on the stack, and
-// destroying a VMState object leaves a state by popping the current state
-// from the stack.
-
-#define STATE_TAG_LIST(V) \
- V(JS) \
- V(GC) \
- V(COMPILER) \
- V(OTHER) \
- V(EXTERNAL)
-
-enum StateTag {
-#define DEF_STATE_TAG(name) name,
- STATE_TAG_LIST(DEF_STATE_TAG)
-#undef DEF_STATE_TAG
- // Pseudo-types.
- state_tag_count
-};
-
-
-// -----------------------------------------------------------------------------
-// Macros
-
-// Testers for test.
-
-#define HAS_SMI_TAG(value) \
- ((reinterpret_cast<intptr_t>(value) & kSmiTagMask) == kSmiTag)
-
-#define HAS_FAILURE_TAG(value) \
- ((reinterpret_cast<intptr_t>(value) & kFailureTagMask) == kFailureTag)
-
-// OBJECT_POINTER_ALIGN returns the value aligned as a HeapObject pointer
-#define OBJECT_POINTER_ALIGN(value) \
- (((value) + kObjectAlignmentMask) & ~kObjectAlignmentMask)
-
-// POINTER_SIZE_ALIGN returns the value aligned as a pointer.
-#define POINTER_SIZE_ALIGN(value) \
- (((value) + kPointerAlignmentMask) & ~kPointerAlignmentMask)
-
-// MAP_POINTER_ALIGN returns the value aligned as a map pointer.
-#define MAP_POINTER_ALIGN(value) \
- (((value) + kMapAlignmentMask) & ~kMapAlignmentMask)
-
-// CODE_POINTER_ALIGN returns the value aligned as a generated code segment.
-#define CODE_POINTER_ALIGN(value) \
- (((value) + kCodeAlignmentMask) & ~kCodeAlignmentMask)
-
// The expression OFFSET_OF(type, field) computes the byte-offset
// of the specified field relative to the containing type. This
// corresponds to 'offsetof' (in stddef.h), except that it doesn't
DISALLOW_COPY_AND_ASSIGN(TypeName)
-// Support for tracking C++ memory allocation. Insert TRACK_MEMORY("Fisk")
-// inside a C++ class and new and delete will be overloaded so logging is
-// performed.
-// This file (globals.h) is included before log.h, so we use direct calls to
-// the Logger rather than the LOG macro.
-#ifdef DEBUG
-#define TRACK_MEMORY(name) \
- void* operator new(size_t size) { \
- void* result = ::operator new(size); \
- Logger::NewEvent(name, result, size); \
- return result; \
- } \
- void operator delete(void* object) { \
- Logger::DeleteEvent(name, object); \
- ::operator delete(object); \
- }
-#else
-#define TRACK_MEMORY(name)
-#endif
-
// Define used for helping GCC to make better inlining. Don't bother for debug
// builds. On GCC 3.4.5 using __attribute__((always_inline)) causes compilation
// errors in debug build.
#define MUST_USE_RESULT
#endif
+// -----------------------------------------------------------------------------
+// Forward declarations for frequently used classes
+// (sorted alphabetically)
-// Feature flags bit positions. They are mostly based on the CPUID spec.
-// (We assign CPUID itself to one of the currently reserved bits --
-// feel free to change this if needed.)
-// On X86/X64, values below 32 are bits in EDX, values above 32 are bits in ECX.
-enum CpuFeature { SSE4_1 = 32 + 19, // x86
- SSE3 = 32 + 0, // x86
- SSE2 = 26, // x86
- CMOV = 15, // x86
- RDTSC = 4, // x86
- CPUID = 10, // x86
- VFP3 = 1, // ARM
- ARMv7 = 2, // ARM
- SAHF = 0}; // x86
+class FreeStoreAllocationPolicy;
+template <typename T, class P = FreeStoreAllocationPolicy> class List;
} } // namespace v8::internal
DISALLOW_COPY_AND_ASSIGN(List);
};
-class FrameElement;
-
-// Add() is inlined, ResizeAdd() called by Add() is inlined except for
-// Lists of FrameElements, and ResizeAddInternal() is inlined in ResizeAdd().
-template <>
-void List<FrameElement,
- FreeStoreAllocationPolicy>::ResizeAdd(const FrameElement& element);
-
} } // namespace v8::internal
#endif // V8_LIST_H_
// Features shared by parsing and pre-parsing scanners.
+#include "../include/v8stdint.h"
#include "scanner-base.h"
namespace v8 {
#include <stdlib.h>
#include <string.h>
+#include "globals.h"
#include "checks.h"
+#include "allocation.h"
namespace v8 {
namespace internal {
// Basic includes
#include "../include/v8.h"
-#include "globals.h"
+#include "v8globals.h"
#include "checks.h"
#include "allocation.h"
#include "v8utils.h"
--- /dev/null
+// Copyright 2010 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_V8GLOBALS_H_
+#define V8_V8GLOBALS_H_
+
+#include "globals.h"
+
+namespace v8 {
+namespace internal {
+
+// This file contains constants and global declarations related to the
+// V8 system.
+
+// Mask for the sign bit in a smi.
+const intptr_t kSmiSignMask = kIntptrSignBit;
+
+const int kObjectAlignmentBits = kPointerSizeLog2;
+const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits;
+const intptr_t kObjectAlignmentMask = kObjectAlignment - 1;
+
+// Desired alignment for pointers.
+const intptr_t kPointerAlignment = (1 << kPointerSizeLog2);
+const intptr_t kPointerAlignmentMask = kPointerAlignment - 1;
+
+// Desired alignment for maps.
+#if V8_HOST_ARCH_64_BIT
+const intptr_t kMapAlignmentBits = kObjectAlignmentBits;
+#else
+const intptr_t kMapAlignmentBits = kObjectAlignmentBits + 3;
+#endif
+const intptr_t kMapAlignment = (1 << kMapAlignmentBits);
+const intptr_t kMapAlignmentMask = kMapAlignment - 1;
+
+// Desired alignment for generated code is 32 bytes (to improve cache line
+// utilization).
+const int kCodeAlignmentBits = 5;
+const intptr_t kCodeAlignment = 1 << kCodeAlignmentBits;
+const intptr_t kCodeAlignmentMask = kCodeAlignment - 1;
+
+// Tag information for Failure.
+const int kFailureTag = 3;
+const int kFailureTagSize = 2;
+const intptr_t kFailureTagMask = (1 << kFailureTagSize) - 1;
+
+
+// Zap-value: The value used for zapping dead objects.
+// Should be a recognizable hex value tagged as a heap object pointer.
+#ifdef V8_HOST_ARCH_64_BIT
+const Address kZapValue =
+ reinterpret_cast<Address>(V8_UINT64_C(0xdeadbeedbeadbeed));
+const Address kHandleZapValue =
+ reinterpret_cast<Address>(V8_UINT64_C(0x1baddead0baddead));
+const Address kFromSpaceZapValue =
+ reinterpret_cast<Address>(V8_UINT64_C(0x1beefdad0beefdad));
+const uint64_t kDebugZapValue = 0xbadbaddbbadbaddb;
+#else
+const Address kZapValue = reinterpret_cast<Address>(0xdeadbeed);
+const Address kHandleZapValue = reinterpret_cast<Address>(0xbaddead);
+const Address kFromSpaceZapValue = reinterpret_cast<Address>(0xbeefdad);
+const uint32_t kDebugZapValue = 0xbadbaddb;
+#endif
+
+
+// Number of bits to represent the page size for paged spaces. The value of 13
+// gives 8K bytes per page.
+const int kPageSizeBits = 13;
+
+// On Intel architecture, cache line size is 64 bytes.
+// On ARM it may be less (32 bytes), but as far this constant is
+// used for aligning data, it doesn't hurt to align on a greater value.
+const int kProcessorCacheLineSize = 64;
+
+// Constants relevant to double precision floating point numbers.
+
+// Quiet NaNs have bits 51 to 62 set, possibly the sign bit, and no
+// other bits set.
+const uint64_t kQuietNaNMask = static_cast<uint64_t>(0xfff) << 51;
+// If looking only at the top 32 bits, the QNaN mask is bits 19 to 30.
+const uint32_t kQuietNaNHighBitsMask = 0xfff << (51 - 32);
+
+
+// -----------------------------------------------------------------------------
+// Forward declarations for frequently used classes
+// (sorted alphabetically)
+
+class AccessorInfo;
+class Allocation;
+class Arguments;
+class Assembler;
+class AssertNoAllocation;
+class BreakableStatement;
+class Code;
+class CodeGenerator;
+class CodeStub;
+class Context;
+class Debug;
+class Debugger;
+class DebugInfo;
+class Descriptor;
+class DescriptorArray;
+class Expression;
+class ExternalReference;
+class FixedArray;
+class FunctionEntry;
+class FunctionLiteral;
+class FunctionTemplateInfo;
+class NumberDictionary;
+class StringDictionary;
+template <typename T> class Handle;
+class Heap;
+class HeapObject;
+class IC;
+class InterceptorInfo;
+class IterationStatement;
+class JSArray;
+class JSFunction;
+class JSObject;
+class LargeObjectSpace;
+class LookupResult;
+class MacroAssembler;
+class Map;
+class MapSpace;
+class MarkCompactCollector;
+class NewSpace;
+class NodeVisitor;
+class Object;
+class MaybeObject;
+class OldSpace;
+class Property;
+class Proxy;
+class RegExpNode;
+struct RegExpCompileData;
+class RegExpTree;
+class RegExpCompiler;
+class RegExpVisitor;
+class Scope;
+template<class Allocator = FreeStoreAllocationPolicy> class ScopeInfo;
+class SerializedScopeInfo;
+class Script;
+class Slot;
+class Smi;
+template <typename Config, class Allocator = FreeStoreAllocationPolicy>
+ class SplayTree;
+class Statement;
+class String;
+class Struct;
+class SwitchStatement;
+class AstVisitor;
+class Variable;
+class VariableProxy;
+class RelocInfo;
+class Deserializer;
+class MessageLocation;
+class ObjectGroup;
+class TickSample;
+class VirtualMemory;
+class Mutex;
+
+typedef bool (*WeakSlotCallback)(Object** pointer);
+
+// -----------------------------------------------------------------------------
+// Miscellaneous
+
+// NOTE: SpaceIterator depends on AllocationSpace enumeration values being
+// consecutive.
+enum AllocationSpace {
+ NEW_SPACE, // Semispaces collected with copying collector.
+ OLD_POINTER_SPACE, // May contain pointers to new space.
+ OLD_DATA_SPACE, // Must not have pointers to new space.
+ CODE_SPACE, // No pointers to new space, marked executable.
+ MAP_SPACE, // Only and all map objects.
+ CELL_SPACE, // Only and all cell objects.
+ LO_SPACE, // Promoted large objects.
+
+ FIRST_SPACE = NEW_SPACE,
+ LAST_SPACE = LO_SPACE,
+ FIRST_PAGED_SPACE = OLD_POINTER_SPACE,
+ LAST_PAGED_SPACE = CELL_SPACE
+};
+const int kSpaceTagSize = 3;
+const int kSpaceTagMask = (1 << kSpaceTagSize) - 1;
+
+
+// A flag that indicates whether objects should be pretenured when
+// allocated (allocated directly into the old generation) or not
+// (allocated in the young generation if the object size and type
+// allows).
+enum PretenureFlag { NOT_TENURED, TENURED };
+
+enum GarbageCollector { SCAVENGER, MARK_COMPACTOR };
+
+enum Executability { NOT_EXECUTABLE, EXECUTABLE };
+
+enum VisitMode { VISIT_ALL, VISIT_ALL_IN_SCAVENGE, VISIT_ONLY_STRONG };
+
+// Flag indicating whether code is built into the VM (one of the natives files).
+enum NativesFlag { NOT_NATIVES_CODE, NATIVES_CODE };
+
+
+// A CodeDesc describes a buffer holding instructions and relocation
+// information. The instructions start at the beginning of the buffer
+// and grow forward, the relocation information starts at the end of
+// the buffer and grows backward.
+//
+// |<--------------- buffer_size ---------------->|
+// |<-- instr_size -->| |<-- reloc_size -->|
+// +==================+========+==================+
+// | instructions | free | reloc info |
+// +==================+========+==================+
+// ^
+// |
+// buffer
+
+struct CodeDesc {
+ byte* buffer;
+ int buffer_size;
+ int instr_size;
+ int reloc_size;
+ Assembler* origin;
+};
+
+
+// Callback function on object slots, used for iterating heap object slots in
+// HeapObjects, global pointers to heap objects, etc. The callback allows the
+// callback function to change the value of the slot.
+typedef void (*ObjectSlotCallback)(HeapObject** pointer);
+
+
+// Callback function used for iterating objects in heap spaces,
+// for example, scanning heap objects.
+typedef int (*HeapObjectCallback)(HeapObject* obj);
+
+
+// Callback function used for checking constraints when copying/relocating
+// objects. Returns true if an object can be copied/relocated from its
+// old_addr to a new_addr.
+typedef bool (*ConstraintCallback)(Address new_addr, Address old_addr);
+
+
+// Callback function on inline caches, used for iterating over inline caches
+// in compiled code.
+typedef void (*InlineCacheCallback)(Code* code, Address ic);
+
+
+// State for inline cache call sites. Aliased as IC::State.
+enum InlineCacheState {
+ // Has never been executed.
+ UNINITIALIZED,
+ // Has been executed but monomorhic state has been delayed.
+ PREMONOMORPHIC,
+ // Has been executed and only one receiver type has been seen.
+ MONOMORPHIC,
+ // Like MONOMORPHIC but check failed due to prototype.
+ MONOMORPHIC_PROTOTYPE_FAILURE,
+ // Multiple receiver types have been seen.
+ MEGAMORPHIC,
+ // Special states for debug break or step in prepare stubs.
+ DEBUG_BREAK,
+ DEBUG_PREPARE_STEP_IN
+};
+
+
+enum InLoopFlag {
+ NOT_IN_LOOP,
+ IN_LOOP
+};
+
+
+enum CallFunctionFlags {
+ NO_CALL_FUNCTION_FLAGS = 0,
+ RECEIVER_MIGHT_BE_VALUE = 1 << 0 // Receiver might not be a JSObject.
+};
+
+
+enum InlineCacheHolderFlag {
+ OWN_MAP, // For fast properties objects.
+ PROTOTYPE_MAP // For slow properties objects (except GlobalObjects).
+};
+
+
+// Type of properties.
+// Order of properties is significant.
+// Must fit in the BitField PropertyDetails::TypeField.
+// A copy of this is in mirror-debugger.js.
+enum PropertyType {
+ NORMAL = 0, // only in slow mode
+ FIELD = 1, // only in fast mode
+ CONSTANT_FUNCTION = 2, // only in fast mode
+ CALLBACKS = 3,
+ INTERCEPTOR = 4, // only in lookup results, not in descriptors.
+ MAP_TRANSITION = 5, // only in fast mode
+ CONSTANT_TRANSITION = 6, // only in fast mode
+ NULL_DESCRIPTOR = 7, // only in fast mode
+ // All properties before MAP_TRANSITION are real.
+ FIRST_PHANTOM_PROPERTY_TYPE = MAP_TRANSITION,
+ // There are no IC stubs for NULL_DESCRIPTORS. Therefore,
+ // NULL_DESCRIPTOR can be used as the type flag for IC stubs for
+ // nonexistent properties.
+ NONEXISTENT = NULL_DESCRIPTOR
+};
+
+
+// Whether to remove map transitions and constant transitions from a
+// DescriptorArray.
+enum TransitionFlag {
+ REMOVE_TRANSITIONS,
+ KEEP_TRANSITIONS
+};
+
+
+// Union used for fast testing of specific double values.
+union DoubleRepresentation {
+ double value;
+ int64_t bits;
+ DoubleRepresentation(double x) { value = x; }
+};
+
+
+// Union used for customized checking of the IEEE double types
+// inlined within v8 runtime, rather than going to the underlying
+// platform headers and libraries
+union IeeeDoubleLittleEndianArchType {
+ double d;
+ struct {
+ unsigned int man_low :32;
+ unsigned int man_high :20;
+ unsigned int exp :11;
+ unsigned int sign :1;
+ } bits;
+};
+
+
+union IeeeDoubleBigEndianArchType {
+ double d;
+ struct {
+ unsigned int sign :1;
+ unsigned int exp :11;
+ unsigned int man_high :20;
+ unsigned int man_low :32;
+ } bits;
+};
+
+
+// AccessorCallback
+struct AccessorDescriptor {
+ MaybeObject* (*getter)(Object* object, void* data);
+ MaybeObject* (*setter)(JSObject* object, Object* value, void* data);
+ void* data;
+};
+
+
+// Logging and profiling.
+// A StateTag represents a possible state of the VM. When compiled with
+// ENABLE_VMSTATE_TRACKING, the logger maintains a stack of these.
+// Creating a VMState object enters a state by pushing on the stack, and
+// destroying a VMState object leaves a state by popping the current state
+// from the stack.
+
+#define STATE_TAG_LIST(V) \
+ V(JS) \
+ V(GC) \
+ V(COMPILER) \
+ V(OTHER) \
+ V(EXTERNAL)
+
+enum StateTag {
+#define DEF_STATE_TAG(name) name,
+ STATE_TAG_LIST(DEF_STATE_TAG)
+#undef DEF_STATE_TAG
+ // Pseudo-types.
+ state_tag_count
+};
+
+
+// -----------------------------------------------------------------------------
+// Macros
+
+// Testers for test.
+
+#define HAS_SMI_TAG(value) \
+ ((reinterpret_cast<intptr_t>(value) & kSmiTagMask) == kSmiTag)
+
+#define HAS_FAILURE_TAG(value) \
+ ((reinterpret_cast<intptr_t>(value) & kFailureTagMask) == kFailureTag)
+
+// OBJECT_POINTER_ALIGN returns the value aligned as a HeapObject pointer
+#define OBJECT_POINTER_ALIGN(value) \
+ (((value) + kObjectAlignmentMask) & ~kObjectAlignmentMask)
+
+// POINTER_SIZE_ALIGN returns the value aligned as a pointer.
+#define POINTER_SIZE_ALIGN(value) \
+ (((value) + kPointerAlignmentMask) & ~kPointerAlignmentMask)
+
+// MAP_POINTER_ALIGN returns the value aligned as a map pointer.
+#define MAP_POINTER_ALIGN(value) \
+ (((value) + kMapAlignmentMask) & ~kMapAlignmentMask)
+
+// CODE_POINTER_ALIGN returns the value aligned as a generated code segment.
+#define CODE_POINTER_ALIGN(value) \
+ (((value) + kCodeAlignmentMask) & ~kCodeAlignmentMask)
+
+// Support for tracking C++ memory allocation. Insert TRACK_MEMORY("Fisk")
+// inside a C++ class and new and delete will be overloaded so logging is
+// performed.
+// This file (globals.h) is included before log.h, so we use direct calls to
+// the Logger rather than the LOG macro.
+#ifdef DEBUG
+#define TRACK_MEMORY(name) \
+ void* operator new(size_t size) { \
+ void* result = ::operator new(size); \
+ Logger::NewEvent(name, result, size); \
+ return result; \
+ } \
+ void operator delete(void* object) { \
+ Logger::DeleteEvent(name, object); \
+ ::operator delete(object); \
+ }
+#else
+#define TRACK_MEMORY(name)
+#endif
+
+
+// Feature flags bit positions. They are mostly based on the CPUID spec.
+// (We assign CPUID itself to one of the currently reserved bits --
+// feel free to change this if needed.)
+// On X86/X64, values below 32 are bits in EDX, values above 32 are bits in ECX.
+enum CpuFeature { SSE4_1 = 32 + 19, // x86
+ SSE3 = 32 + 0, // x86
+ SSE2 = 26, // x86
+ CMOV = 15, // x86
+ RDTSC = 4, // x86
+ CPUID = 10, // x86
+ VFP3 = 1, // ARM
+ ARMv7 = 2, // ARM
+ SAHF = 0}; // x86
+
+} } // namespace v8::internal
+
+#endif // V8_V8GLOBALS_H_
#include "frame-element.h"
#include "macro-assembler.h"
+#include "list-inl.h"
+#include "utils.h"
+
#if V8_TARGET_ARCH_IA32
#include "ia32/virtual-frame-ia32.h"
#elif V8_TARGET_ARCH_X64
#error Unsupported target architecture.
#endif
+namespace v8 {
+namespace internal {
+
+// Add() on List is inlined, ResizeAdd() called by Add() is inlined except for
+// Lists of FrameElements, and ResizeAddInternal() is inlined in ResizeAdd().
+template <>
+void List<FrameElement,
+ FreeStoreAllocationPolicy>::ResizeAdd(const FrameElement& element);
+} } // namespace v8::internal
+
#endif // V8_VIRTUAL_FRAME_H_
projects / platform / upstream / v8.git / commitdiff