dart-lang/sdk
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity
Files
754239b077e0f18fa5a82b10c32404cc0aa482b8
sdk/runtime/vm/bootstrap_natives.h
T
Modestas Valauskas 754239b077 [core] Add trailingZeroBitCount and oneBitCount to int 
Adds two new getters to int for bit-counting: trailingZeroBitCount
(ctz) and oneBitCount (popcount). On native platforms they operate
on the full 64-bit two's-complement representation; on the web they
operate on the least-significant 32 bits.

Implementations:
- VM: unified C++ natives Integer_trailingZeroBitCount /
  Integer_oneBitCount on _IntegerImplementation, using
  Utils::CountTrailingZeros64 and Utils::CountOneBits64. The receiver
  may be _Smi or _Mint at runtime.
- dart2js / DDC: clz32-based ctz and a SWAR popcount.
- dart2wasm: inlined i64.ctz and i64.popcnt intrinsics.

leadingZeroBitCount (clz) is intentionally excluded from this CL: its
result depends on the platform integer width (e.g. 1.leadingZeroBitCount
is 31 on web, 63 on native), and the same value can be derived from
the existing bitLength getter when needed.

Asm intrinsification on native architectures is intentionally left for
a separate follow-up CL.

Work towards https://github.com/dart-lang/sdk/issues/6486 (this CL
covers popcount and ctz from the bit-twiddling list; clz, rotate,
reverse, and others remain).

Work towards https://github.com/dart-lang/sdk/issues/1053 (efficient
BitSet implementation).

Bug: https://github.com/dart-lang/sdk/issues/52673
Bug: https://github.com/dart-lang/sdk/issues/38346
TEST=tests/corelib/int_bit_count_test

Change-Id: I8a5cdb5c91360478f47bbd6b9c84ca1c477aa8c7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/498041
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
Reviewed-by: Stephen Adams <sra@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Auto-Submit: Modestas Valauskas <valauskasmodestas@gmail.com>
Reviewed-by: Lasse Nielsen <lrn@google.com>
2026-05-12 05:49:31 -07:00

422 lines
31 KiB
C++
Raw Blame History

// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#ifndef RUNTIME_VM_BOOTSTRAP_NATIVES_H_
#define RUNTIME_VM_BOOTSTRAP_NATIVES_H_
#include "vm/native_entry.h"
// bootstrap dart natives used in the core dart library.
namespace dart {
// List of bootstrap native entry points used in the core dart library.
// V(function_name, argument_count)
#define BOOTSTRAP_NATIVE_LIST(V) \
V(AsyncStarMoveNext_debuggerStepCheck, 1) \
V(DartAsync_fatal, 1) \
V(Object_equals, 2) \
V(Object_getHash, 1) \
V(Object_toString, 1) \
V(Object_runtimeType, 1) \
V(Object_haveSameRuntimeType, 2) \
V(Object_instanceOf, 4) \
V(Object_simpleInstanceOf, 2) \
V(Function_apply, 2) \
V(Closure_equals, 2) \
V(Closure_computeHash, 1) \
V(AbstractType_equality, 2) \
V(AbstractType_getHashCode, 1) \
V(AbstractType_toString, 1) \
V(Type_equality, 2) \
V(LibraryPrefix_isLoaded, 1) \
V(LibraryPrefix_setLoaded, 1) \
V(LibraryPrefix_loadingUnit, 1) \
V(LibraryPrefix_issueLoad, 1) \
V(Identical_comparison, 2) \
V(Integer_bitAndFromInteger, 2) \
V(Integer_bitOrFromInteger, 2) \
V(Integer_bitXorFromInteger, 2) \
V(Integer_addFromInteger, 2) \
V(Integer_subFromInteger, 2) \
V(Integer_mulFromInteger, 2) \
V(Integer_truncDivFromInteger, 2) \
V(Integer_moduloFromInteger, 2) \
V(Integer_greaterThanFromInteger, 2) \
V(Integer_equalToInteger, 2) \
V(Integer_fromEnvironment, 3) \
V(Integer_parse, 1) \
V(Integer_shlFromInteger, 2) \
V(Integer_shrFromInteger, 2) \
V(Integer_ushrFromInteger, 2) \
V(Bool_fromEnvironment, 3) \
V(Bool_hasEnvironment, 2) \
V(Capability_factory, 1) \
V(Capability_equals, 2) \
V(Capability_get_hashcode, 1) \
V(createConstMapFromMapOfDeeplyImmutables, 1) \
V(RawReceivePort_factory, 2) \
V(RawReceivePort_get_id, 1) \
V(RawReceivePort_closeInternal, 1) \
V(RawReceivePort_setActive, 2) \
V(RawReceivePort_getActive, 1) \
V(SendPort_get_id, 1) \
V(SendPort_get_hashcode, 1) \
V(SendPort_sendInternal_, 2) \
V(Smi_bitNegate, 1) \
V(Smi_bitLength, 1) \
V(Integer_trailingZeroBitCount, 1) \
V(Integer_oneBitCount, 1) \
V(SuspendState_instantiateClosureWithFutureTypeArgument, 2) \
V(Mint_bitNegate, 1) \
V(Mint_bitLength, 1) \
V(Developer_debugger, 2) \
V(Developer_getIsolateIdFromSendPort, 1) \
V(Developer_getObjectId, 1) \
V(Developer_getServerInfo, 1) \
V(Developer_getServiceMajorVersion, 0) \
V(Developer_getServiceMinorVersion, 0) \
V(Developer_inspect, 1) \
V(Developer_lookupExtension, 1) \
V(Developer_registerExtension, 2) \
V(Developer_log, 8) \
V(Developer_postEvent, 2) \
V(Developer_webServerControl, 3) \
V(Developer_NativeRuntime_buildId, 0) \
V(Developer_NativeRuntime_streamTimelineTo, 5) \
V(Developer_NativeRuntime_stopStreamingTimeline, 0) \
V(Developer_NativeRuntime_writeHeapSnapshotToFile, 1) \
V(Developer_reachability_barrier, 0) \
V(Double_getIsNegative, 1) \
V(Double_getIsInfinite, 1) \
V(Double_getIsNaN, 1) \
V(Double_add, 2) \
V(Double_sub, 2) \
V(Double_mul, 2) \
V(Double_div, 2) \
V(Double_greaterThanFromInteger, 2) \
V(Double_equalToInteger, 2) \
V(Double_greaterThan, 2) \
V(Double_equal, 2) \
V(Double_doubleFromInteger, 2) \
V(Double_parse, 3) \
V(Double_toString, 1) \
V(Double_toStringAsFixed, 2) \
V(Double_toStringAsExponential, 2) \
V(Double_toStringAsPrecision, 2) \
V(Double_flipSignBit, 1) \
V(RegExp_factory, 6) \
V(RegExp_getPattern, 1) \
V(RegExp_getIsMultiLine, 1) \
V(RegExp_getIsCaseSensitive, 1) \
V(RegExp_getIsUnicode, 1) \
V(RegExp_getIsDotAll, 1) \
V(RegExp_getGroupCount, 1) \
V(RegExp_getGroupNameMap, 1) \
V(RegExp_ExecuteMatch, 3) \
V(RegExp_ExecuteMatchSticky, 3) \
V(List_allocate, 2) \
V(List_setIndexed, 3) \
V(List_getLength, 1) \
V(List_slice, 4) \
V(ImmutableList_from, 4) \
V(StringBase_createFromCodePoints, 3) \
V(StringBase_substringUnchecked, 3) \
V(StringBase_joinReplaceAllResult, 4) \
V(StringBase_intern, 1) \
V(StringBuffer_createStringFromUint16Array, 3) \
V(OneByteString_substringUnchecked, 3) \
V(OneByteString_allocateFromOneByteList, 3) \
V(TwoByteString_allocateFromTwoByteList, 3) \
V(String_getHashCode, 1) \
V(String_getLength, 1) \
V(String_charAt, 2) \
V(String_concat, 2) \
V(String_fromEnvironment, 3) \
V(String_toLowerCase, 1) \
V(String_toUpperCase, 1) \
V(String_concatRange, 3) \
V(Random_initialSeed, 0) \
V(SecureRandom_getBytes, 1) \
V(DateTime_currentTimeMicros, 0) \
V(DateTime_timeZoneName, 1) \
V(DateTime_timeZoneOffsetInSeconds, 1) \
V(AssertionError_throwNew, 3) \
V(AssertionError_throwNewSource, 5) \
V(Error_throwWithStackTrace, 2) \
V(Error_trySetStackTrace, 2) \
V(StackTrace_current, 0) \
V(TypeError_throwNew, 4) \
V(Stopwatch_now, 0) \
V(Stopwatch_frequency, 0) \
V(Timeline_getNextTaskId, 0) \
V(Timeline_getTraceClock, 0) \
V(Timeline_reportTaskEvent, 5) \
V(MicrotaskMirrorQueue_onScheduleAsyncCallback, 0) \
V(MicrotaskMirrorQueue_onSchedulePriorityAsyncCallback, 0) \
V(MicrotaskMirrorQueue_onAsyncCallbackComplete, 2) \
V(TypedDataBase_length, 1) \
V(TypedDataBase_setClampedRange, 5) \
V(TypedData_GetFloat32, 2) \
V(TypedData_SetFloat32, 3) \
V(TypedData_GetFloat64, 2) \
V(TypedData_SetFloat64, 3) \
V(TypedData_GetFloat32x4, 2) \
V(TypedData_SetFloat32x4, 3) \
V(TypedData_GetInt32x4, 2) \
V(TypedData_SetInt32x4, 3) \
V(TypedData_GetFloat64x2, 2) \
V(TypedData_SetFloat64x2, 3) \
V(TypedDataView_offsetInBytes, 1) \
V(TypedDataView_typedData, 1) \
V(Float32x4_fromDoubles, 4) \
V(Float32x4_splat, 1) \
V(Float32x4_fromInt32x4Bits, 2) \
V(Float32x4_fromFloat64x2, 2) \
V(Float32x4_zero, 1) \
V(Float32x4_add, 2) \
V(Float32x4_negate, 1) \
V(Float32x4_sub, 2) \
V(Float32x4_mul, 2) \
V(Float32x4_div, 2) \
V(Float32x4_cmplt, 2) \
V(Float32x4_cmplte, 2) \
V(Float32x4_cmpgt, 2) \
V(Float32x4_cmpgte, 2) \
V(Float32x4_cmpequal, 2) \
V(Float32x4_cmpnequal, 2) \
V(Float32x4_scale, 2) \
V(Float32x4_abs, 1) \
V(Float32x4_clamp, 3) \
V(Float32x4_getX, 1) \
V(Float32x4_getY, 1) \
V(Float32x4_getZ, 1) \
V(Float32x4_getW, 1) \
V(Float32x4_getSignMask, 1) \
V(Float32x4_shuffle, 2) \
V(Float32x4_shuffleMix, 3) \
V(Float32x4_setX, 2) \
V(Float32x4_setY, 2) \
V(Float32x4_setZ, 2) \
V(Float32x4_setW, 2) \
V(Float32x4_min, 2) \
V(Float32x4_max, 2) \
V(Float32x4_sqrt, 1) \
V(Float32x4_reciprocal, 1) \
V(Float32x4_reciprocalSqrt, 1) \
V(Float64x2_fromDoubles, 2) \
V(Float64x2_splat, 1) \
V(Float64x2_zero, 1) \
V(Float64x2_fromFloat32x4, 2) \
V(Float64x2_add, 2) \
V(Float64x2_negate, 1) \
V(Float64x2_sub, 2) \
V(Float64x2_mul, 2) \
V(Float64x2_div, 2) \
V(Float64x2_scale, 2) \
V(Float64x2_abs, 1) \
V(Float64x2_clamp, 3) \
V(Float64x2_getX, 1) \
V(Float64x2_getY, 1) \
V(Float64x2_getSignMask, 1) \
V(Float64x2_setX, 2) \
V(Float64x2_setY, 2) \
V(Float64x2_min, 2) \
V(Float64x2_max, 2) \
V(Float64x2_sqrt, 1) \
V(Int32x4_fromInts, 4) \
V(Int32x4_fromBools, 4) \
V(Int32x4_fromFloat32x4Bits, 2) \
V(Int32x4_or, 2) \
V(Int32x4_and, 2) \
V(Int32x4_xor, 2) \
V(Int32x4_add, 2) \
V(Int32x4_sub, 2) \
V(Int32x4_getX, 1) \
V(Int32x4_getY, 1) \
V(Int32x4_getZ, 1) \
V(Int32x4_getW, 1) \
V(Int32x4_setX, 2) \
V(Int32x4_setY, 2) \
V(Int32x4_setZ, 2) \
V(Int32x4_setW, 2) \
V(Int32x4_getSignMask, 1) \
V(Int32x4_shuffle, 2) \
V(Int32x4_shuffleMix, 3) \
V(Int32x4_getFlagX, 1) \
V(Int32x4_getFlagY, 1) \
V(Int32x4_getFlagZ, 1) \
V(Int32x4_getFlagW, 1) \
V(Int32x4_setFlagX, 2) \
V(Int32x4_setFlagY, 2) \
V(Int32x4_setFlagZ, 2) \
V(Int32x4_setFlagW, 2) \
V(Int32x4_select, 3) \
V(Isolate_exit_, 2) \
V(Isolate_getCurrentRootUriStr, 0) \
V(Isolate_getDebugName, 1) \
V(Isolate_getPortAndCapabilitiesOfCurrentIsolate, 0) \
V(Isolate_sendOOB, 2) \
V(Isolate_spawnFunction, 10) \
V(Isolate_spawnUri, 12) \
V(GrowableList_allocate, 2) \
V(GrowableList_setIndexed, 3) \
V(GrowableList_getLength, 1) \
V(GrowableList_getCapacity, 1) \
V(GrowableList_setLength, 2) \
V(GrowableList_setData, 2) \
V(Internal_unsafeCast, 1) \
V(Internal_collectAllGarbage, 0) \
V(Internal_makeListFixedLength, 1) \
V(Internal_makeFixedListUnmodifiable, 1) \
V(Internal_extractTypeArguments, 2) \
V(Internal_prependTypeArguments, 4) \
V(Internal_instantiateClosure, 2) \
V(Internal_loadDynamicModule, 1) \
V(Internal_allocateOneByteString, 1) \
V(Internal_allocateTwoByteString, 1) \
V(Internal_writeIntoOneByteString, 3) \
V(Internal_writeIntoTwoByteString, 3) \
V(Internal_deoptimizeFunctionsOnStack, 0) \
V(Internal_allocateObjectInstructionsStart, 0) \
V(Internal_allocateObjectInstructionsEnd, 0) \
V(Internal_ensureDeeplyImmutable, 1) \
V(InvocationMirror_unpackTypeArguments, 2) \
V(NoSuchMethodError_existingMethodSignature, 3) \
V(ThreadLocal_allocateId, 0) \
V(ThreadLocal_clearValue, 1) \
V(ThreadLocal_getValue, 1) \
V(ThreadLocal_hasValue, 1) \
V(ThreadLocal_setValue, 2) \
V(Uri_isWindowsPlatform, 0) \
V(UserTag_new, 2) \
V(UserTag_label, 1) \
V(UserTag_makeCurrent, 1) \
V(VMService_SendIsolateServiceMessage, 2) \
V(VMService_SendRootServiceMessage, 1) \
V(VMService_OnStart, 0) \
V(VMService_OnExit, 0) \
V(VMService_OnServerAddressChange, 1) \
V(VMService_ListenStream, 2) \
V(VMService_CancelStream, 1) \
V(Ffi_createNativeCallableListener, 2) \
V(Ffi_createNativeCallableIsolateLocal, 3) \
V(Ffi_createNativeCallableIsolateGroupBound, 2) \
V(Ffi_deleteNativeCallable, 1) \
V(Ffi_deleteIsolateGroupNativeCallable, 1) \
V(Ffi_updateNativeCallableKeepIsolateAliveCounter, 1) \
V(Ffi_dl_open, 1) \
V(Ffi_dl_close, 1) \
V(Ffi_dl_lookup, 2) \
V(Ffi_dl_getHandle, 1) \
V(Ffi_dl_providesSymbol, 2) \
V(Ffi_dl_processLibrary, 0) \
V(Ffi_dl_executableLibrary, 0) \
V(Ffi_GetFfiNativeResolver, 0) \
V(Ffi_loadAbiSpecificInt, 2) \
V(Ffi_loadAbiSpecificIntAtIndex, 3) \
V(Ffi_storeAbiSpecificInt, 3) \
V(Ffi_storeAbiSpecificIntAtIndex, 4) \
V(DartApiDLInitializeData, 0) \
V(DartApiDLMajorVersion, 0) \
V(DartApiDLMinorVersion, 0) \
V(DartNativeApiFunctionPointer, 1) \
V(TransferableTypedData_factory, 2) \
V(TransferableTypedData_materialize, 1) \
V(Timer_postTimerEvent, 1)
// List of bootstrap native entry points used in the dart:mirror library.
#define MIRRORS_BOOTSTRAP_NATIVE_LIST(V) \
V(Mirrors_makeLocalClassMirror, 1) \
V(Mirrors_makeLocalTypeMirror, 1) \
V(Mirrors_instantiateGenericType, 2) \
V(Mirrors_mangleName, 2) \
V(MirrorReference_equals, 2) \
V(MirrorSystem_libraries, 0) \
V(MirrorSystem_isolate, 0) \
V(IsolateMirror_loadUri, 1) \
V(InstanceMirror_invoke, 5) \
V(InstanceMirror_invokeGetter, 3) \
V(InstanceMirror_invokeSetter, 4) \
V(InstanceMirror_computeType, 1) \
V(ClosureMirror_function, 1) \
V(TypeMirror_subtypeTest, 2) \
V(ClassMirror_libraryUri, 1) \
V(ClassMirror_supertype, 1) \
V(ClassMirror_supertype_instantiated, 1) \
V(ClassMirror_interfaces, 1) \
V(ClassMirror_interfaces_instantiated, 1) \
V(ClassMirror_mixin, 1) \
V(ClassMirror_mixin_instantiated, 2) \
V(ClassMirror_members, 3) \
V(ClassMirror_constructors, 3) \
V(LibraryMirror_members, 2) \
V(LibraryMirror_libraryDependencies, 2) \
V(ClassMirror_invoke, 5) \
V(ClassMirror_invokeGetter, 3) \
V(ClassMirror_invokeSetter, 4) \
V(ClassMirror_invokeConstructor, 5) \
V(ClassMirror_type_variables, 1) \
V(ClassMirror_type_arguments, 1) \
V(LibraryMirror_fromPrefix, 1) \
V(LibraryMirror_invoke, 5) \
V(LibraryMirror_invokeGetter, 3) \
V(LibraryMirror_invokeSetter, 4) \
V(TypeVariableMirror_owner, 1) \
V(TypeVariableMirror_upper_bound, 1) \
V(DeclarationMirror_location, 1) \
V(DeclarationMirror_metadata, 1) \
V(FunctionTypeMirror_call_method, 2) \
V(FunctionTypeMirror_parameters, 2) \
V(FunctionTypeMirror_return_type, 1) \
V(MethodMirror_owner, 2) \
V(MethodMirror_parameters, 2) \
V(MethodMirror_return_type, 2) \
V(MethodMirror_source, 1) \
V(ParameterMirror_type, 3) \
V(VariableMirror_type, 2)
#define BOOTSTRAP_FFI_NATIVE_LIST(V) \
V(ConditionVariable_Initialize, void, (Dart_Handle)) \
V(ConditionVariable_Notify, void, (Dart_Handle)) \
V(ConditionVariable_NotifyAll, void, (Dart_Handle)) \
V(ConditionVariable_Wait, void, (Dart_Handle, Dart_Handle, intptr_t)) \
V(FinalizerEntry_SetExternalSize, void, (Dart_Handle, intptr_t)) \
V(IsolateGroup_runSync, Dart_Handle, (Dart_Handle)) \
V(Mutex_Initialize, void, (Dart_Handle)) \
V(Mutex_RunLocked, Dart_Handle, (Dart_Handle, Dart_Handle)) \
V(Pointer_asTypedListFinalizerAllocateData, void*, ()) \
V(Pointer_asTypedListFinalizerCallbackPointer, void*, ())
class BootstrapNatives : public AllStatic {
public:
static Dart_NativeFunction Lookup(Dart_Handle name,
int argument_count,
bool* auto_setup_scope);
// For use with @Native.
static void* LookupFfiNative(const char* name, uintptr_t argument_count);
static const uint8_t* Symbol(Dart_NativeFunction nf);
#define DECLARE_BOOTSTRAP_NATIVE(name, ignored) \
static ObjectPtr DN_##name(Thread* thread, Zone* zone, \
NativeArguments* arguments);
BOOTSTRAP_NATIVE_LIST(DECLARE_BOOTSTRAP_NATIVE)
#if !defined(DART_PRECOMPILED_RUNTIME)
MIRRORS_BOOTSTRAP_NATIVE_LIST(DECLARE_BOOTSTRAP_NATIVE)
#endif
#undef DECLARE_BOOTSTRAP_NATIVE
#define DECLARE_BOOTSTRAP_FFI_NATIVE(name, return_type, argument_types) \
static return_type FN_##name argument_types;
BOOTSTRAP_FFI_NATIVE_LIST(DECLARE_BOOTSTRAP_FFI_NATIVE)
#undef DECLARE_BOOTSTRAP_FFI_NATIVE
};
} // namespace dart
#endif // RUNTIME_VM_BOOTSTRAP_NATIVES_H_
Reference in New Issue View Git Blame Copy Permalink