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// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/runtime/runtime.h"
#include "src/base/hashmap.h"
#include "src/contexts.h"
#include "src/handles-inl.h"
#include "src/heap/heap.h"
#include "src/isolate.h"
#include "src/objects-inl.h"
#include "src/reloc-info.h"
#include "src/runtime/runtime-utils.h"
namespace v8 {
namespace internal {
// Header of runtime functions.
#define F(name, number_of_args, result_size) \
Object* Runtime_##name(int args_length, Object** args_object, \
Isolate* isolate);
FOR_EACH_INTRINSIC_RETURN_OBJECT(F)
#undef F
#define P(name, number_of_args, result_size) \
ObjectPair Runtime_##name(int args_length, Object** args_object, \
Isolate* isolate);
FOR_EACH_INTRINSIC_RETURN_PAIR(P)
#undef P
#define F(name, number_of_args, result_size) \
{ \
Runtime::k##name, Runtime::RUNTIME, #name, FUNCTION_ADDR(Runtime_##name), \
number_of_args, result_size \
} \
,
#define I(name, number_of_args, result_size) \
{ \
Runtime::kInline##name, Runtime::INLINE, "_" #name, \
FUNCTION_ADDR(Runtime_##name), number_of_args, result_size \
} \
,
static const Runtime::Function kIntrinsicFunctions[] = {
FOR_EACH_INTRINSIC(F) FOR_EACH_INLINE_INTRINSIC(I)};
#undef I
#undef F
namespace {
V8_DECLARE_ONCE(initialize_function_name_map_once);
static const base::CustomMatcherHashMap* kRuntimeFunctionNameMap;
struct IntrinsicFunctionIdentifier {
IntrinsicFunctionIdentifier(const unsigned char* data, const int length)
: data_(data), length_(length) {}
static bool Match(void* key1, void* key2) {
const IntrinsicFunctionIdentifier* lhs =
static_cast<IntrinsicFunctionIdentifier*>(key1);
const IntrinsicFunctionIdentifier* rhs =
static_cast<IntrinsicFunctionIdentifier*>(key2);
if (lhs->length_ != rhs->length_) return false;
return CompareCharsUnsigned(reinterpret_cast<const uint8_t*>(lhs->data_),
reinterpret_cast<const uint8_t*>(rhs->data_),
rhs->length_) == 0;
}
uint32_t Hash() {
return StringHasher::HashSequentialString<uint8_t>(
data_, length_, v8::internal::kZeroHashSeed);
}
const unsigned char* data_;
const int length_;
};
void InitializeIntrinsicFunctionNames() {
base::CustomMatcherHashMap* function_name_map =
new base::CustomMatcherHashMap(IntrinsicFunctionIdentifier::Match);
for (size_t i = 0; i < arraysize(kIntrinsicFunctions); ++i) {
const Runtime::Function* function = &kIntrinsicFunctions[i];
IntrinsicFunctionIdentifier* identifier = new IntrinsicFunctionIdentifier(
reinterpret_cast<const unsigned char*>(function->name),
static_cast<int>(strlen(function->name)));
base::HashMap::Entry* entry =
function_name_map->InsertNew(identifier, identifier->Hash());
entry->value = const_cast<Runtime::Function*>(function);
}
kRuntimeFunctionNameMap = function_name_map;
}
} // namespace
bool Runtime::NeedsExactContext(FunctionId id) {
switch (id) {
case Runtime::kAddPrivateField:
case Runtime::kCopyDataProperties:
case Runtime::kCreateDataProperty:
case Runtime::kCreatePrivateFieldSymbol:
case Runtime::kReThrow:
case Runtime::kThrow:
case Runtime::kThrowApplyNonFunction:
case Runtime::kThrowCalledNonCallable:
case Runtime::kThrowConstAssignError:
case Runtime::kThrowConstructorNonCallableError:
case Runtime::kThrowConstructedNonConstructable:
case Runtime::kThrowConstructorReturnedNonObject:
case Runtime::kThrowInvalidStringLength:
case Runtime::kThrowInvalidTypedArrayAlignment:
case Runtime::kThrowIteratorError:
case Runtime::kThrowIteratorResultNotAnObject:
case Runtime::kThrowNotConstructor:
case Runtime::kThrowRangeError:
case Runtime::kThrowReferenceError:
case Runtime::kThrowStackOverflow:
case Runtime::kThrowStaticPrototypeError:
case Runtime::kThrowSuperAlreadyCalledError:
case Runtime::kThrowSuperNotCalled:
case Runtime::kThrowSymbolAsyncIteratorInvalid:
case Runtime::kThrowSymbolIteratorInvalid:
case Runtime::kThrowThrowMethodMissing:
case Runtime::kThrowTypeError:
case Runtime::kThrowUnsupportedSuperError:
case Runtime::kThrowWasmError:
case Runtime::kThrowWasmStackOverflow:
return false;
default:
return true;
}
}
bool Runtime::IsNonReturning(FunctionId id) {
switch (id) {
case Runtime::kThrowUnsupportedSuperError:
case Runtime::kThrowConstructorNonCallableError:
case Runtime::kThrowStaticPrototypeError:
case Runtime::kThrowSuperAlreadyCalledError:
case Runtime::kThrowSuperNotCalled:
case Runtime::kReThrow:
case Runtime::kThrow:
case Runtime::kThrowApplyNonFunction:
case Runtime::kThrowCalledNonCallable:
case Runtime::kThrowConstructedNonConstructable:
case Runtime::kThrowConstructorReturnedNonObject:
case Runtime::kThrowInvalidStringLength:
case Runtime::kThrowInvalidTypedArrayAlignment:
case Runtime::kThrowIteratorError:
case Runtime::kThrowIteratorResultNotAnObject:
case Runtime::kThrowThrowMethodMissing:
case Runtime::kThrowSymbolIteratorInvalid:
case Runtime::kThrowNotConstructor:
case Runtime::kThrowRangeError:
case Runtime::kThrowReferenceError:
case Runtime::kThrowStackOverflow:
case Runtime::kThrowSymbolAsyncIteratorInvalid:
case Runtime::kThrowTypeError:
case Runtime::kThrowConstAssignError:
case Runtime::kThrowWasmError:
case Runtime::kThrowWasmStackOverflow:
return true;
default:
return false;
}
}
const Runtime::Function* Runtime::FunctionForName(const unsigned char* name,
int length) {
base::CallOnce(&initialize_function_name_map_once,
&InitializeIntrinsicFunctionNames);
IntrinsicFunctionIdentifier identifier(name, length);
base::HashMap::Entry* entry =
kRuntimeFunctionNameMap->Lookup(&identifier, identifier.Hash());
if (entry) {
return reinterpret_cast<Function*>(entry->value);
}
return nullptr;
}
const Runtime::Function* Runtime::FunctionForEntry(Address entry) {
for (size_t i = 0; i < arraysize(kIntrinsicFunctions); ++i) {
if (entry == kIntrinsicFunctions[i].entry) {
return &(kIntrinsicFunctions[i]);
}
}
return nullptr;
}
const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
return &(kIntrinsicFunctions[static_cast<int>(id)]);
}
const Runtime::Function* Runtime::RuntimeFunctionTable(Isolate* isolate) {
#ifdef USE_SIMULATOR
// When running with the simulator we need to provide a table which has
// redirected runtime entry addresses.
if (!isolate->runtime_state()->redirected_intrinsic_functions()) {
size_t function_count = arraysize(kIntrinsicFunctions);
Function* redirected_functions = new Function[function_count];
memcpy(redirected_functions, kIntrinsicFunctions,
sizeof(kIntrinsicFunctions));
for (size_t i = 0; i < function_count; i++) {
ExternalReference redirected_entry =
ExternalReference::Create(static_cast<Runtime::FunctionId>(i));
redirected_functions[i].entry = redirected_entry.address();
}
isolate->runtime_state()->set_redirected_intrinsic_functions(
redirected_functions);
}
return isolate->runtime_state()->redirected_intrinsic_functions();
#else
return kIntrinsicFunctions;
#endif
}
std::ostream& operator<<(std::ostream& os, Runtime::FunctionId id) {
return os << Runtime::FunctionForId(id)->name;
}
} // namespace internal
} // namespace v8
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