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Sebastien Hertz8ece0502013-08-07 11:26:41 +02001/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_INTERPRETER_INTERPRETER_COMMON_H_
18#define ART_RUNTIME_INTERPRETER_INTERPRETER_COMMON_H_
19
20#include "interpreter.h"
21
22#include <math.h>
23
Ian Rogerscf7f1912014-10-22 22:06:39 -070024#include <iostream>
Ian Rogersc7dd2952014-10-21 23:31:19 -070025#include <sstream>
26
Mathieu Chartierc7853442015-03-27 14:35:38 -070027#include "art_field-inl.h"
Mathieu Chartiere401d142015-04-22 13:56:20 -070028#include "art_method-inl.h"
Sebastien Hertz8ece0502013-08-07 11:26:41 +020029#include "base/logging.h"
Andreas Gampe794ad762015-02-23 08:12:24 -080030#include "base/macros.h"
Sebastien Hertz8ece0502013-08-07 11:26:41 +020031#include "class_linker-inl.h"
32#include "common_throws.h"
33#include "dex_file-inl.h"
34#include "dex_instruction-inl.h"
Mingyao Yang98d1cc82014-05-15 17:02:16 -070035#include "entrypoints/entrypoint_utils-inl.h"
Mathieu Chartier0cd81352014-05-22 16:48:55 -070036#include "handle_scope-inl.h"
Igor Murashkin6918bf12015-09-27 19:19:06 -070037#include "lambda/art_lambda_method.h"
Igor Murashkine2facc52015-07-10 13:49:08 -070038#include "lambda/box_table.h"
Igor Murashkin6918bf12015-09-27 19:19:06 -070039#include "lambda/closure.h"
40#include "lambda/closure_builder-inl.h"
41#include "lambda/leaking_allocator.h"
42#include "lambda/shorty_field_type.h"
Sebastien Hertz8ece0502013-08-07 11:26:41 +020043#include "mirror/class-inl.h"
Igor Murashkin2ee54e22015-06-18 10:05:11 -070044#include "mirror/method.h"
Sebastien Hertz8ece0502013-08-07 11:26:41 +020045#include "mirror/object-inl.h"
46#include "mirror/object_array-inl.h"
Douglas Leung4965c022014-06-11 11:41:11 -070047#include "mirror/string-inl.h"
Andreas Gampe03ec9302015-08-27 17:41:47 -070048#include "stack.h"
Sebastien Hertz8ece0502013-08-07 11:26:41 +020049#include "thread.h"
50#include "well_known_classes.h"
51
Mathieu Chartiere401d142015-04-22 13:56:20 -070052using ::art::ArtMethod;
Sebastien Hertz8ece0502013-08-07 11:26:41 +020053using ::art::mirror::Array;
54using ::art::mirror::BooleanArray;
55using ::art::mirror::ByteArray;
56using ::art::mirror::CharArray;
57using ::art::mirror::Class;
58using ::art::mirror::ClassLoader;
59using ::art::mirror::IntArray;
60using ::art::mirror::LongArray;
61using ::art::mirror::Object;
62using ::art::mirror::ObjectArray;
63using ::art::mirror::ShortArray;
64using ::art::mirror::String;
65using ::art::mirror::Throwable;
66
67namespace art {
68namespace interpreter {
69
70// External references to both interpreter implementations.
71
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +010072template<bool do_access_check, bool transaction_active>
Ian Rogerse94652f2014-12-02 11:13:19 -080073extern JValue ExecuteSwitchImpl(Thread* self, const DexFile::CodeItem* code_item,
Sebastien Hertzc6714852013-09-30 16:42:32 +020074 ShadowFrame& shadow_frame, JValue result_register);
Sebastien Hertz8ece0502013-08-07 11:26:41 +020075
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +010076template<bool do_access_check, bool transaction_active>
Ian Rogerse94652f2014-12-02 11:13:19 -080077extern JValue ExecuteGotoImpl(Thread* self, const DexFile::CodeItem* code_item,
Sebastien Hertzc6714852013-09-30 16:42:32 +020078 ShadowFrame& shadow_frame, JValue result_register);
Sebastien Hertz8ece0502013-08-07 11:26:41 +020079
Nicolas Geoffray0aa50ce2015-03-10 11:03:29 +000080void ThrowNullPointerExceptionFromInterpreter()
Mathieu Chartier90443472015-07-16 20:32:27 -070081 SHARED_REQUIRES(Locks::mutator_lock_);
Sebastien Hertzda843e12014-05-28 19:28:31 +020082
Andreas Gampe03ec9302015-08-27 17:41:47 -070083template <bool kMonitorCounting>
84static inline void DoMonitorEnter(Thread* self,
85 ShadowFrame* frame,
Mathieu Chartier2d096c92015-10-12 16:18:20 -070086 Object* ref)
87 NO_THREAD_SAFETY_ANALYSIS
88 REQUIRES(!Roles::uninterruptible_) {
89 StackHandleScope<1> hs(self);
90 Handle<Object> h_ref(hs.NewHandle(ref));
91 h_ref->MonitorEnter(self);
92 frame->GetLockCountData().AddMonitor<kMonitorCounting>(self, h_ref.Get());
Sebastien Hertz8ece0502013-08-07 11:26:41 +020093}
94
Andreas Gampe03ec9302015-08-27 17:41:47 -070095template <bool kMonitorCounting>
96static inline void DoMonitorExit(Thread* self,
97 ShadowFrame* frame,
Mathieu Chartier2d096c92015-10-12 16:18:20 -070098 Object* ref)
99 NO_THREAD_SAFETY_ANALYSIS
100 REQUIRES(!Roles::uninterruptible_) {
101 StackHandleScope<1> hs(self);
102 Handle<Object> h_ref(hs.NewHandle(ref));
103 h_ref->MonitorExit(self);
104 frame->GetLockCountData().RemoveMonitorOrThrow<kMonitorCounting>(self, h_ref.Get());
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200105}
106
Sebastien Hertz45b15972015-04-03 16:07:05 +0200107void AbortTransactionF(Thread* self, const char* fmt, ...)
108 __attribute__((__format__(__printf__, 2, 3)))
Mathieu Chartier90443472015-07-16 20:32:27 -0700109 SHARED_REQUIRES(Locks::mutator_lock_);
Sebastien Hertz45b15972015-04-03 16:07:05 +0200110
111void AbortTransactionV(Thread* self, const char* fmt, va_list args)
Mathieu Chartier90443472015-07-16 20:32:27 -0700112 SHARED_REQUIRES(Locks::mutator_lock_);
Mathieu Chartierb2c7ead2014-04-29 11:13:16 -0700113
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100114void RecordArrayElementsInTransaction(mirror::Array* array, int32_t count)
Mathieu Chartier90443472015-07-16 20:32:27 -0700115 SHARED_REQUIRES(Locks::mutator_lock_);
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100116
Sebastien Hertzc6714852013-09-30 16:42:32 +0200117// Invokes the given method. This is part of the invocation support and is used by DoInvoke and
118// DoInvokeVirtualQuick functions.
119// Returns true on success, otherwise throws an exception and returns false.
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200120template<bool is_range, bool do_assignability_check>
Ian Rogerse94652f2014-12-02 11:13:19 -0800121bool DoCall(ArtMethod* called_method, Thread* self, ShadowFrame& shadow_frame,
Sebastien Hertzc6714852013-09-30 16:42:32 +0200122 const Instruction* inst, uint16_t inst_data, JValue* result);
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200123
Igor Murashkin158f35c2015-06-10 15:55:30 -0700124// Invokes the given lambda closure. This is part of the invocation support and is used by
125// DoLambdaInvoke functions.
126// Returns true on success, otherwise throws an exception and returns false.
127template<bool is_range, bool do_assignability_check>
128bool DoLambdaCall(ArtMethod* called_method, Thread* self, ShadowFrame& shadow_frame,
129 const Instruction* inst, uint16_t inst_data, JValue* result);
130
131// Validates that the art method corresponding to a lambda method target
132// is semantically valid:
133//
134// Must be ACC_STATIC and ACC_LAMBDA. Must be a concrete managed implementation
135// (i.e. not native, not proxy, not abstract, ...).
136//
137// If the validation fails, return false and raise an exception.
138static inline bool IsValidLambdaTargetOrThrow(ArtMethod* called_method)
Mathieu Chartier90443472015-07-16 20:32:27 -0700139 SHARED_REQUIRES(Locks::mutator_lock_) {
Igor Murashkin158f35c2015-06-10 15:55:30 -0700140 bool success = false;
141
142 if (UNLIKELY(called_method == nullptr)) {
143 // The shadow frame should already be pushed, so we don't need to update it.
144 } else if (UNLIKELY(called_method->IsAbstract())) {
145 ThrowAbstractMethodError(called_method);
146 // TODO(iam): Also handle the case when the method is non-static, what error do we throw?
147 // TODO(iam): Also make sure that ACC_LAMBDA is set.
148 } else if (UNLIKELY(called_method->GetCodeItem() == nullptr)) {
149 // Method could be native, proxy method, etc. Lambda targets have to be concrete impls,
150 // so don't allow this.
151 } else {
152 success = true;
153 }
154
155 return success;
156}
157
Igor Murashkin6918bf12015-09-27 19:19:06 -0700158// Write out the 'Closure*' into vreg and vreg+1, as if it was a jlong.
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700159static inline void WriteLambdaClosureIntoVRegs(ShadowFrame& shadow_frame,
Igor Murashkin30c475a2015-10-06 13:59:43 -0700160 const lambda::Closure& lambda_closure,
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700161 uint32_t vreg) {
162 // Split the method into a lo and hi 32 bits so we can encode them into 2 virtual registers.
Igor Murashkin30c475a2015-10-06 13:59:43 -0700163 uint32_t closure_lo = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(&lambda_closure));
164 uint32_t closure_hi = static_cast<uint32_t>(reinterpret_cast<uint64_t>(&lambda_closure)
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700165 >> BitSizeOf<uint32_t>());
166 // Use uint64_t instead of uintptr_t to allow shifting past the max on 32-bit.
167 static_assert(sizeof(uint64_t) >= sizeof(uintptr_t), "Impossible");
168
Igor Murashkin6918bf12015-09-27 19:19:06 -0700169 DCHECK_NE(closure_lo | closure_hi, 0u);
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700170
Igor Murashkin6918bf12015-09-27 19:19:06 -0700171 shadow_frame.SetVReg(vreg, closure_lo);
172 shadow_frame.SetVReg(vreg + 1, closure_hi);
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700173}
174
Igor Murashkin158f35c2015-06-10 15:55:30 -0700175// Handles create-lambda instructions.
176// Returns true on success, otherwise throws an exception and returns false.
177// (Exceptions are thrown by creating a new exception and then being put in the thread TLS)
178//
Igor Murashkin6918bf12015-09-27 19:19:06 -0700179// The closure must be allocated big enough to hold the data, and should not be
180// pre-initialized. It is initialized with the actual captured variables as a side-effect,
181// although this should be unimportant to the caller since this function also handles storing it to
182// the ShadowFrame.
183//
Igor Murashkin158f35c2015-06-10 15:55:30 -0700184// As a work-in-progress implementation, this shoves the ArtMethod object corresponding
185// to the target dex method index into the target register vA and vA + 1.
186template<bool do_access_check>
Igor Murashkin6918bf12015-09-27 19:19:06 -0700187static inline bool DoCreateLambda(Thread* self,
188 const Instruction* inst,
189 /*inout*/ShadowFrame& shadow_frame,
190 /*inout*/lambda::ClosureBuilder* closure_builder,
191 /*inout*/lambda::Closure* uninitialized_closure) {
192 DCHECK(closure_builder != nullptr);
193 DCHECK(uninitialized_closure != nullptr);
194 DCHECK_ALIGNED(uninitialized_closure, alignof(lambda::Closure));
195
Igor Murashkin30c475a2015-10-06 13:59:43 -0700196 using lambda::ArtLambdaMethod;
197 using lambda::LeakingAllocator;
198
Igor Murashkin158f35c2015-06-10 15:55:30 -0700199 /*
200 * create-lambda is opcode 0x21c
201 * - vA is the target register where the closure will be stored into
202 * (also stores into vA + 1)
203 * - vB is the method index which will be the target for a later invoke-lambda
204 */
205 const uint32_t method_idx = inst->VRegB_21c();
206 mirror::Object* receiver = nullptr; // Always static. (see 'kStatic')
207 ArtMethod* sf_method = shadow_frame.GetMethod();
208 ArtMethod* const called_method = FindMethodFromCode<kStatic, do_access_check>(
Andreas Gampe3a357142015-08-07 17:20:11 -0700209 method_idx, &receiver, sf_method, self);
Igor Murashkin158f35c2015-06-10 15:55:30 -0700210
Igor Murashkin6918bf12015-09-27 19:19:06 -0700211 uint32_t vreg_dest_closure = inst->VRegA_21c();
Igor Murashkin158f35c2015-06-10 15:55:30 -0700212
213 if (UNLIKELY(!IsValidLambdaTargetOrThrow(called_method))) {
214 CHECK(self->IsExceptionPending());
Igor Murashkin6918bf12015-09-27 19:19:06 -0700215 shadow_frame.SetVReg(vreg_dest_closure, 0u);
216 shadow_frame.SetVReg(vreg_dest_closure + 1, 0u);
Igor Murashkin158f35c2015-06-10 15:55:30 -0700217 return false;
218 }
219
Igor Murashkin30c475a2015-10-06 13:59:43 -0700220 ArtLambdaMethod* initialized_lambda_method;
Igor Murashkin6918bf12015-09-27 19:19:06 -0700221 // Initialize the ArtLambdaMethod with the right data.
222 {
Igor Murashkin30c475a2015-10-06 13:59:43 -0700223 // Allocate enough memory to store a well-aligned ArtLambdaMethod.
224 // This is not the final type yet since the data starts out uninitialized.
225 LeakingAllocator::AlignedMemoryStorage<ArtLambdaMethod>* uninitialized_lambda_method =
226 LeakingAllocator::AllocateMemory<ArtLambdaMethod>(self);
Igor Murashkin6918bf12015-09-27 19:19:06 -0700227
228 std::string captured_variables_shorty = closure_builder->GetCapturedVariableShortyTypes();
229 std::string captured_variables_long_type_desc;
230
231 // Synthesize a long type descriptor from the short one.
232 for (char shorty : captured_variables_shorty) {
233 lambda::ShortyFieldType shorty_field_type(shorty);
234 if (shorty_field_type.IsObject()) {
235 // Not the true type, but good enough until we implement verifier support.
236 captured_variables_long_type_desc += "Ljava/lang/Object;";
237 UNIMPLEMENTED(FATAL) << "create-lambda with an object captured variable";
238 } else if (shorty_field_type.IsLambda()) {
239 // Not the true type, but good enough until we implement verifier support.
240 captured_variables_long_type_desc += "Ljava/lang/Runnable;";
241 UNIMPLEMENTED(FATAL) << "create-lambda with a lambda captured variable";
242 } else {
243 // The primitive types have the same length shorty or not, so this is always correct.
244 DCHECK(shorty_field_type.IsPrimitive());
245 captured_variables_long_type_desc += shorty_field_type;
246 }
247 }
248
249 // Copy strings to dynamically allocated storage. This leaks, but that's ok. Fix it later.
250 // TODO: Strings need to come from the DexFile, so they won't need their own allocations.
Igor Murashkin30c475a2015-10-06 13:59:43 -0700251 char* captured_variables_type_desc = LeakingAllocator::MakeFlexibleInstance<char>(
Igor Murashkin6918bf12015-09-27 19:19:06 -0700252 self,
253 captured_variables_long_type_desc.size() + 1);
254 strcpy(captured_variables_type_desc, captured_variables_long_type_desc.c_str());
Igor Murashkin30c475a2015-10-06 13:59:43 -0700255 char* captured_variables_shorty_copy = LeakingAllocator::MakeFlexibleInstance<char>(
Igor Murashkin6918bf12015-09-27 19:19:06 -0700256 self,
257 captured_variables_shorty.size() + 1);
258 strcpy(captured_variables_shorty_copy, captured_variables_shorty.c_str());
259
Igor Murashkin30c475a2015-10-06 13:59:43 -0700260 // After initialization, the object at the storage is well-typed. Use strong type going forward.
261 initialized_lambda_method =
262 new (uninitialized_lambda_method) ArtLambdaMethod(called_method,
263 captured_variables_type_desc,
264 captured_variables_shorty_copy,
265 true); // innate lambda
Igor Murashkin6918bf12015-09-27 19:19:06 -0700266 }
267
268 // Write all the closure captured variables and the closure header into the closure.
Igor Murashkin30c475a2015-10-06 13:59:43 -0700269 lambda::Closure* initialized_closure =
270 closure_builder->CreateInPlace(uninitialized_closure, initialized_lambda_method);
Igor Murashkin6918bf12015-09-27 19:19:06 -0700271
Igor Murashkin30c475a2015-10-06 13:59:43 -0700272 WriteLambdaClosureIntoVRegs(/*inout*/shadow_frame, *initialized_closure, vreg_dest_closure);
Igor Murashkin158f35c2015-06-10 15:55:30 -0700273 return true;
274}
275
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700276// Reads out the 'ArtMethod*' stored inside of vreg and vreg+1
277//
278// Validates that the art method points to a valid lambda function, otherwise throws
279// an exception and returns null.
280// (Exceptions are thrown by creating a new exception and then being put in the thread TLS)
Igor Murashkin6918bf12015-09-27 19:19:06 -0700281static inline lambda::Closure* ReadLambdaClosureFromVRegsOrThrow(ShadowFrame& shadow_frame,
282 uint32_t vreg)
Mathieu Chartier90443472015-07-16 20:32:27 -0700283 SHARED_REQUIRES(Locks::mutator_lock_) {
Igor Murashkin6918bf12015-09-27 19:19:06 -0700284 // Lambda closures take up a consecutive pair of 2 virtual registers.
285 // On 32-bit the high bits are always 0.
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700286 uint32_t vc_value_lo = shadow_frame.GetVReg(vreg);
287 uint32_t vc_value_hi = shadow_frame.GetVReg(vreg + 1);
288
289 uint64_t vc_value_ptr = (static_cast<uint64_t>(vc_value_hi) << BitSizeOf<uint32_t>())
290 | vc_value_lo;
291
292 // Use uint64_t instead of uintptr_t to allow left-shifting past the max on 32-bit.
293 static_assert(sizeof(uint64_t) >= sizeof(uintptr_t), "Impossible");
Igor Murashkin6918bf12015-09-27 19:19:06 -0700294 lambda::Closure* const lambda_closure = reinterpret_cast<lambda::Closure*>(vc_value_ptr);
295 DCHECK_ALIGNED(lambda_closure, alignof(lambda::Closure));
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700296
297 // Guard against the user passing a null closure, which is odd but (sadly) semantically valid.
Igor Murashkin6918bf12015-09-27 19:19:06 -0700298 if (UNLIKELY(lambda_closure == nullptr)) {
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700299 ThrowNullPointerExceptionFromInterpreter();
300 return nullptr;
Igor Murashkin6918bf12015-09-27 19:19:06 -0700301 } else if (UNLIKELY(!IsValidLambdaTargetOrThrow(lambda_closure->GetTargetMethod()))) {
302 // Sanity check against data corruption.
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700303 return nullptr;
304 }
305
Igor Murashkin6918bf12015-09-27 19:19:06 -0700306 return lambda_closure;
307}
308
309// Forward declaration for lock annotations. See below for documentation.
310template <bool do_access_check>
311static inline const char* GetStringDataByDexStringIndexOrThrow(ShadowFrame& shadow_frame,
312 uint32_t string_idx)
313 SHARED_REQUIRES(Locks::mutator_lock_);
314
315// Find the c-string data corresponding to a dex file's string index.
316// Otherwise, returns null if not found and throws a VerifyError.
317//
318// Note that with do_access_check=false, we never return null because the verifier
319// must guard against invalid string indices.
320// (Exceptions are thrown by creating a new exception and then being put in the thread TLS)
321template <bool do_access_check>
322static inline const char* GetStringDataByDexStringIndexOrThrow(ShadowFrame& shadow_frame,
323 uint32_t string_idx) {
324 ArtMethod* method = shadow_frame.GetMethod();
325 const DexFile* dex_file = method->GetDexFile();
326
327 mirror::Class* declaring_class = method->GetDeclaringClass();
328 if (!do_access_check) {
329 // MethodVerifier refuses methods with string_idx out of bounds.
330 DCHECK_LT(string_idx, declaring_class->GetDexCache()->NumStrings());
331 } else {
332 // Access checks enabled: perform string index bounds ourselves.
333 if (string_idx >= dex_file->GetHeader().string_ids_size_) {
334 ThrowVerifyError(declaring_class, "String index '%" PRIu32 "' out of bounds",
335 string_idx);
336 return nullptr;
337 }
338 }
339
340 const char* type_string = dex_file->StringDataByIdx(string_idx);
341
342 if (UNLIKELY(type_string == nullptr)) {
343 CHECK_EQ(false, do_access_check)
344 << " verifier should've caught invalid string index " << string_idx;
345 CHECK_EQ(true, do_access_check)
346 << " string idx size check should've caught invalid string index " << string_idx;
347 }
348
349 return type_string;
350}
351
352// Handles capture-variable instructions.
353// Returns true on success, otherwise throws an exception and returns false.
354// (Exceptions are thrown by creating a new exception and then being put in the thread TLS)
355template<bool do_access_check>
356static inline bool DoCaptureVariable(Thread* self,
357 const Instruction* inst,
358 /*inout*/ShadowFrame& shadow_frame,
359 /*inout*/lambda::ClosureBuilder* closure_builder) {
360 DCHECK(closure_builder != nullptr);
361 using lambda::ShortyFieldType;
362 /*
363 * capture-variable is opcode 0xf6, fmt 0x21c
364 * - vA is the source register of the variable that will be captured
365 * - vB is the string ID of the variable's type that will be captured
366 */
367 const uint32_t source_vreg = inst->VRegA_21c();
368 const uint32_t string_idx = inst->VRegB_21c();
369 // TODO: this should be a proper [type id] instead of a [string ID] pointing to a type.
370
371 const char* type_string = GetStringDataByDexStringIndexOrThrow<do_access_check>(shadow_frame,
372 string_idx);
373 if (UNLIKELY(type_string == nullptr)) {
374 CHECK(self->IsExceptionPending());
375 return false;
376 }
377
378 char type_first_letter = type_string[0];
379 ShortyFieldType shorty_type;
380 if (do_access_check &&
381 UNLIKELY(!ShortyFieldType::MaybeCreate(type_first_letter, /*out*/&shorty_type))) { // NOLINT: [whitespace/comma] [3]
382 ThrowVerifyError(shadow_frame.GetMethod()->GetDeclaringClass(),
383 "capture-variable vB must be a valid type");
384 return false;
385 } else {
386 // Already verified that the type is valid.
387 shorty_type = ShortyFieldType(type_first_letter);
388 }
389
390 const size_t captured_variable_count = closure_builder->GetCaptureCount();
391
392 // Note: types are specified explicitly so that the closure is packed tightly.
393 switch (shorty_type) {
394 case ShortyFieldType::kBoolean: {
395 uint32_t primitive_narrow_value = shadow_frame.GetVReg(source_vreg);
396 closure_builder->CaptureVariablePrimitive<bool>(primitive_narrow_value);
397 break;
398 }
399 case ShortyFieldType::kByte: {
400 uint32_t primitive_narrow_value = shadow_frame.GetVReg(source_vreg);
401 closure_builder->CaptureVariablePrimitive<int8_t>(primitive_narrow_value);
402 break;
403 }
404 case ShortyFieldType::kChar: {
405 uint32_t primitive_narrow_value = shadow_frame.GetVReg(source_vreg);
406 closure_builder->CaptureVariablePrimitive<uint16_t>(primitive_narrow_value);
407 break;
408 }
409 case ShortyFieldType::kShort: {
410 uint32_t primitive_narrow_value = shadow_frame.GetVReg(source_vreg);
411 closure_builder->CaptureVariablePrimitive<int16_t>(primitive_narrow_value);
412 break;
413 }
414 case ShortyFieldType::kInt: {
415 uint32_t primitive_narrow_value = shadow_frame.GetVReg(source_vreg);
416 closure_builder->CaptureVariablePrimitive<int32_t>(primitive_narrow_value);
417 break;
418 }
419 case ShortyFieldType::kDouble: {
420 closure_builder->CaptureVariablePrimitive(shadow_frame.GetVRegDouble(source_vreg));
421 break;
422 }
423 case ShortyFieldType::kFloat: {
424 closure_builder->CaptureVariablePrimitive(shadow_frame.GetVRegFloat(source_vreg));
425 break;
426 }
427 case ShortyFieldType::kLambda: {
428 UNIMPLEMENTED(FATAL) << " capture-variable with type kLambda";
429 // TODO: Capturing lambdas recursively will be done at a later time.
430 UNREACHABLE();
431 }
432 case ShortyFieldType::kLong: {
433 closure_builder->CaptureVariablePrimitive(shadow_frame.GetVRegLong(source_vreg));
434 break;
435 }
436 case ShortyFieldType::kObject: {
437 closure_builder->CaptureVariableObject(shadow_frame.GetVRegReference(source_vreg));
438 UNIMPLEMENTED(FATAL) << " capture-variable with type kObject";
439 // TODO: finish implementing this. disabled for now since we can't track lambda refs for GC.
440 UNREACHABLE();
441 }
442
443 default:
444 LOG(FATAL) << "Invalid shorty type value " << shorty_type;
445 UNREACHABLE();
446 }
447
448 DCHECK_EQ(captured_variable_count + 1, closure_builder->GetCaptureCount());
449
450 return true;
451}
452
453// Handles capture-variable instructions.
454// Returns true on success, otherwise throws an exception and returns false.
455// (Exceptions are thrown by creating a new exception and then being put in the thread TLS)
456template<bool do_access_check>
457static inline bool DoLiberateVariable(Thread* self,
458 const Instruction* inst,
459 size_t captured_variable_index,
460 /*inout*/ShadowFrame& shadow_frame) {
461 using lambda::ShortyFieldType;
462 /*
463 * liberate-variable is opcode 0xf7, fmt 0x22c
464 * - vA is the destination register
465 * - vB is the register with the lambda closure in it
466 * - vC is the string ID which needs to be a valid field type descriptor
467 */
468
469 const uint32_t dest_vreg = inst->VRegA_22c();
470 const uint32_t closure_vreg = inst->VRegB_22c();
471 const uint32_t string_idx = inst->VRegC_22c();
472 // TODO: this should be a proper [type id] instead of a [string ID] pointing to a type.
473
474
475 // Synthesize a long type descriptor from a shorty type descriptor list.
476 // TODO: Fix the dex encoding to contain the long and short type descriptors.
477 const char* type_string = GetStringDataByDexStringIndexOrThrow<do_access_check>(shadow_frame,
478 string_idx);
479 if (UNLIKELY(do_access_check && type_string == nullptr)) {
480 CHECK(self->IsExceptionPending());
481 shadow_frame.SetVReg(dest_vreg, 0);
482 return false;
483 }
484
485 char type_first_letter = type_string[0];
486 ShortyFieldType shorty_type;
487 if (do_access_check &&
488 UNLIKELY(!ShortyFieldType::MaybeCreate(type_first_letter, /*out*/&shorty_type))) { // NOLINT: [whitespace/comma] [3]
489 ThrowVerifyError(shadow_frame.GetMethod()->GetDeclaringClass(),
490 "liberate-variable vC must be a valid type");
491 shadow_frame.SetVReg(dest_vreg, 0);
492 return false;
493 } else {
494 // Already verified that the type is valid.
495 shorty_type = ShortyFieldType(type_first_letter);
496 }
497
498 // Check for closure being null *after* the type check.
499 // This way we can access the type info in case we fail later, to know how many vregs to clear.
500 const lambda::Closure* lambda_closure =
501 ReadLambdaClosureFromVRegsOrThrow(/*inout*/shadow_frame, closure_vreg);
502
503 // Failed lambda target runtime check, an exception was raised.
504 if (UNLIKELY(lambda_closure == nullptr)) {
505 CHECK(self->IsExceptionPending());
506
507 // Clear the destination vreg(s) to be safe.
508 shadow_frame.SetVReg(dest_vreg, 0);
509 if (shorty_type.IsPrimitiveWide() || shorty_type.IsLambda()) {
510 shadow_frame.SetVReg(dest_vreg + 1, 0);
511 }
512 return false;
513 }
514
515 if (do_access_check &&
516 UNLIKELY(captured_variable_index >= lambda_closure->GetNumberOfCapturedVariables())) {
517 ThrowVerifyError(shadow_frame.GetMethod()->GetDeclaringClass(),
518 "liberate-variable captured variable index %zu out of bounds",
519 lambda_closure->GetNumberOfCapturedVariables());
520 // Clear the destination vreg(s) to be safe.
521 shadow_frame.SetVReg(dest_vreg, 0);
522 if (shorty_type.IsPrimitiveWide() || shorty_type.IsLambda()) {
523 shadow_frame.SetVReg(dest_vreg + 1, 0);
524 }
525 return false;
526 }
527
528 // Verify that the runtime type of the captured-variable matches the requested dex type.
529 if (do_access_check) {
530 ShortyFieldType actual_type = lambda_closure->GetCapturedShortyType(captured_variable_index);
531 if (actual_type != shorty_type) {
532 ThrowVerifyError(shadow_frame.GetMethod()->GetDeclaringClass(),
533 "cannot liberate-variable of runtime type '%c' to dex type '%c'",
534 static_cast<char>(actual_type),
535 static_cast<char>(shorty_type));
536
537 shadow_frame.SetVReg(dest_vreg, 0);
538 if (shorty_type.IsPrimitiveWide() || shorty_type.IsLambda()) {
539 shadow_frame.SetVReg(dest_vreg + 1, 0);
540 }
541 return false;
542 }
543
544 if (actual_type.IsLambda() || actual_type.IsObject()) {
545 UNIMPLEMENTED(FATAL) << "liberate-variable type checks needs to "
546 << "parse full type descriptor for objects and lambdas";
547 }
548 }
549
550 // Unpack the captured variable from the closure into the correct type, then save it to the vreg.
551 if (shorty_type.IsPrimitiveNarrow()) {
552 uint32_t primitive_narrow_value =
553 lambda_closure->GetCapturedPrimitiveNarrow(captured_variable_index);
554 shadow_frame.SetVReg(dest_vreg, primitive_narrow_value);
555 } else if (shorty_type.IsPrimitiveWide()) {
556 uint64_t primitive_wide_value =
557 lambda_closure->GetCapturedPrimitiveWide(captured_variable_index);
558 shadow_frame.SetVRegLong(dest_vreg, static_cast<int64_t>(primitive_wide_value));
559 } else if (shorty_type.IsObject()) {
560 mirror::Object* unpacked_object =
561 lambda_closure->GetCapturedObject(captured_variable_index);
562 shadow_frame.SetVRegReference(dest_vreg, unpacked_object);
563
564 UNIMPLEMENTED(FATAL) << "liberate-variable cannot unpack objects yet";
565 } else if (shorty_type.IsLambda()) {
566 UNIMPLEMENTED(FATAL) << "liberate-variable cannot unpack lambdas yet";
567 } else {
568 LOG(FATAL) << "unreachable";
569 UNREACHABLE();
570 }
571
572 return true;
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700573}
574
Igor Murashkin158f35c2015-06-10 15:55:30 -0700575template<bool do_access_check>
576static inline bool DoInvokeLambda(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst,
577 uint16_t inst_data, JValue* result) {
578 /*
579 * invoke-lambda is opcode 0x25
580 *
581 * - vC is the closure register (both vC and vC + 1 will be used to store the closure).
582 * - vB is the number of additional registers up to |{vD,vE,vF,vG}| (4)
583 * - the rest of the registers are always var-args
584 *
585 * - reading var-args for 0x25 gets us vD,vE,vF,vG (but not vB)
586 */
Igor Murashkin6918bf12015-09-27 19:19:06 -0700587 uint32_t vreg_closure = inst->VRegC_25x();
588 const lambda::Closure* lambda_closure =
589 ReadLambdaClosureFromVRegsOrThrow(shadow_frame, vreg_closure);
Igor Murashkin158f35c2015-06-10 15:55:30 -0700590
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700591 // Failed lambda target runtime check, an exception was raised.
Igor Murashkin6918bf12015-09-27 19:19:06 -0700592 if (UNLIKELY(lambda_closure == nullptr)) {
Igor Murashkin158f35c2015-06-10 15:55:30 -0700593 CHECK(self->IsExceptionPending());
594 result->SetJ(0);
595 return false;
Igor Murashkin158f35c2015-06-10 15:55:30 -0700596 }
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700597
Igor Murashkin6918bf12015-09-27 19:19:06 -0700598 ArtMethod* const called_method = lambda_closure->GetTargetMethod();
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700599 // Invoke a non-range lambda
600 return DoLambdaCall<false, do_access_check>(called_method, self, shadow_frame, inst, inst_data,
601 result);
Igor Murashkin158f35c2015-06-10 15:55:30 -0700602}
603
Igor Murashkin6918bf12015-09-27 19:19:06 -0700604// Handles invoke-XXX/range instructions (other than invoke-lambda[-range]).
Sebastien Hertzc6714852013-09-30 16:42:32 +0200605// Returns true on success, otherwise throws an exception and returns false.
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200606template<InvokeType type, bool is_range, bool do_access_check>
607static inline bool DoInvoke(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst,
608 uint16_t inst_data, JValue* result) {
609 const uint32_t method_idx = (is_range) ? inst->VRegB_3rc() : inst->VRegB_35c();
610 const uint32_t vregC = (is_range) ? inst->VRegC_3rc() : inst->VRegC_35c();
Mathieu Chartiere861ebd2013-10-09 15:01:21 -0700611 Object* receiver = (type == kStatic) ? nullptr : shadow_frame.GetVRegReference(vregC);
Mathieu Chartiere401d142015-04-22 13:56:20 -0700612 ArtMethod* sf_method = shadow_frame.GetMethod();
Ian Rogerse94652f2014-12-02 11:13:19 -0800613 ArtMethod* const called_method = FindMethodFromCode<type, do_access_check>(
Andreas Gampe3a357142015-08-07 17:20:11 -0700614 method_idx, &receiver, sf_method, self);
Mathieu Chartier0cd81352014-05-22 16:48:55 -0700615 // The shadow frame should already be pushed, so we don't need to update it.
Ian Rogerse94652f2014-12-02 11:13:19 -0800616 if (UNLIKELY(called_method == nullptr)) {
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200617 CHECK(self->IsExceptionPending());
618 result->SetJ(0);
619 return false;
Ian Rogerse94652f2014-12-02 11:13:19 -0800620 } else if (UNLIKELY(called_method->IsAbstract())) {
621 ThrowAbstractMethodError(called_method);
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200622 result->SetJ(0);
623 return false;
624 } else {
Nicolas Geoffray5550ca82015-08-21 18:38:30 +0100625 if (type == kVirtual || type == kInterface) {
626 instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
627 if (UNLIKELY(instrumentation->HasInvokeVirtualOrInterfaceListeners())) {
628 instrumentation->InvokeVirtualOrInterface(
629 self, receiver, sf_method, shadow_frame.GetDexPC(), called_method);
630 }
631 }
Ian Rogerse94652f2014-12-02 11:13:19 -0800632 return DoCall<is_range, do_access_check>(called_method, self, shadow_frame, inst, inst_data,
633 result);
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200634 }
635}
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200636
Sebastien Hertzc6714852013-09-30 16:42:32 +0200637// Handles invoke-virtual-quick and invoke-virtual-quick-range instructions.
638// Returns true on success, otherwise throws an exception and returns false.
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200639template<bool is_range>
640static inline bool DoInvokeVirtualQuick(Thread* self, ShadowFrame& shadow_frame,
641 const Instruction* inst, uint16_t inst_data,
642 JValue* result) {
643 const uint32_t vregC = (is_range) ? inst->VRegC_3rc() : inst->VRegC_35c();
644 Object* const receiver = shadow_frame.GetVRegReference(vregC);
Sebastien Hertzd4beb6b2013-10-02 17:07:20 +0200645 if (UNLIKELY(receiver == nullptr)) {
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200646 // We lost the reference to the method index so we cannot get a more
647 // precised exception message.
Nicolas Geoffray0aa50ce2015-03-10 11:03:29 +0000648 ThrowNullPointerExceptionFromDexPC();
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200649 return false;
650 }
651 const uint32_t vtable_idx = (is_range) ? inst->VRegB_3rc() : inst->VRegB_35c();
Mingyao Yang2cdbad72014-07-16 10:44:41 -0700652 CHECK(receiver->GetClass()->ShouldHaveEmbeddedImtAndVTable());
Mathieu Chartiere401d142015-04-22 13:56:20 -0700653 ArtMethod* const called_method = receiver->GetClass()->GetEmbeddedVTableEntry(
654 vtable_idx, sizeof(void*));
Ian Rogerse94652f2014-12-02 11:13:19 -0800655 if (UNLIKELY(called_method == nullptr)) {
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200656 CHECK(self->IsExceptionPending());
657 result->SetJ(0);
658 return false;
Ian Rogerse94652f2014-12-02 11:13:19 -0800659 } else if (UNLIKELY(called_method->IsAbstract())) {
660 ThrowAbstractMethodError(called_method);
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200661 result->SetJ(0);
662 return false;
663 } else {
Nicolas Geoffray5550ca82015-08-21 18:38:30 +0100664 instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
665 if (UNLIKELY(instrumentation->HasInvokeVirtualOrInterfaceListeners())) {
666 instrumentation->InvokeVirtualOrInterface(
667 self, receiver, shadow_frame.GetMethod(), shadow_frame.GetDexPC(), called_method);
668 }
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200669 // No need to check since we've been quickened.
Ian Rogerse94652f2014-12-02 11:13:19 -0800670 return DoCall<is_range, false>(called_method, self, shadow_frame, inst, inst_data, result);
Sebastien Hertzc61124b2013-09-10 11:44:19 +0200671 }
672}
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200673
Sebastien Hertzc6714852013-09-30 16:42:32 +0200674// Handles iget-XXX and sget-XXX instructions.
675// Returns true on success, otherwise throws an exception and returns false.
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200676template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check>
Ian Rogers54874942014-06-10 16:31:03 -0700677bool DoFieldGet(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst,
Mathieu Chartier90443472015-07-16 20:32:27 -0700678 uint16_t inst_data) SHARED_REQUIRES(Locks::mutator_lock_);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200679
Sebastien Hertzc6714852013-09-30 16:42:32 +0200680// Handles iget-quick, iget-wide-quick and iget-object-quick instructions.
681// Returns true on success, otherwise throws an exception and returns false.
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200682template<Primitive::Type field_type>
Ian Rogers54874942014-06-10 16:31:03 -0700683bool DoIGetQuick(ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data)
Mathieu Chartier90443472015-07-16 20:32:27 -0700684 SHARED_REQUIRES(Locks::mutator_lock_);
Sebastien Hertz479fc1e2014-04-04 17:51:34 +0200685
Sebastien Hertzc6714852013-09-30 16:42:32 +0200686// Handles iput-XXX and sput-XXX instructions.
687// Returns true on success, otherwise throws an exception and returns false.
Ian Rogers54874942014-06-10 16:31:03 -0700688template<FindFieldType find_type, Primitive::Type field_type, bool do_access_check,
689 bool transaction_active>
690bool DoFieldPut(Thread* self, const ShadowFrame& shadow_frame, const Instruction* inst,
Mathieu Chartier90443472015-07-16 20:32:27 -0700691 uint16_t inst_data) SHARED_REQUIRES(Locks::mutator_lock_);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200692
Sebastien Hertzc6714852013-09-30 16:42:32 +0200693// Handles iput-quick, iput-wide-quick and iput-object-quick instructions.
694// Returns true on success, otherwise throws an exception and returns false.
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100695template<Primitive::Type field_type, bool transaction_active>
Ian Rogers54874942014-06-10 16:31:03 -0700696bool DoIPutQuick(const ShadowFrame& shadow_frame, const Instruction* inst, uint16_t inst_data)
Mathieu Chartier90443472015-07-16 20:32:27 -0700697 SHARED_REQUIRES(Locks::mutator_lock_);
Ian Rogers54874942014-06-10 16:31:03 -0700698
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200699
Sebastien Hertzc6714852013-09-30 16:42:32 +0200700// Handles string resolution for const-string and const-string-jumbo instructions. Also ensures the
701// java.lang.String class is initialized.
Ian Rogers6786a582014-10-28 12:49:06 -0700702static inline String* ResolveString(Thread* self, ShadowFrame& shadow_frame, uint32_t string_idx)
Mathieu Chartier90443472015-07-16 20:32:27 -0700703 SHARED_REQUIRES(Locks::mutator_lock_) {
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200704 Class* java_lang_string_class = String::GetJavaLangString();
705 if (UNLIKELY(!java_lang_string_class->IsInitialized())) {
706 ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
Mathieu Chartiereb8167a2014-05-07 15:43:14 -0700707 StackHandleScope<1> hs(self);
708 Handle<mirror::Class> h_class(hs.NewHandle(java_lang_string_class));
Ian Rogers7b078e82014-09-10 14:44:24 -0700709 if (UNLIKELY(!class_linker->EnsureInitialized(self, h_class, true, true))) {
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200710 DCHECK(self->IsExceptionPending());
Mathieu Chartierc528dba2013-11-26 12:00:11 -0800711 return nullptr;
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200712 }
713 }
Mathieu Chartiere401d142015-04-22 13:56:20 -0700714 ArtMethod* method = shadow_frame.GetMethod();
Mathieu Chartiereace4582014-11-24 18:29:54 -0800715 mirror::Class* declaring_class = method->GetDeclaringClass();
Vladimir Marko05792b92015-08-03 11:56:49 +0100716 // MethodVerifier refuses methods with string_idx out of bounds.
717 DCHECK_LT(string_idx, declaring_class->GetDexCache()->NumStrings());
718 mirror::String* s = declaring_class->GetDexCacheStrings()[string_idx].Read();
Ian Rogers6786a582014-10-28 12:49:06 -0700719 if (UNLIKELY(s == nullptr)) {
720 StackHandleScope<1> hs(self);
Mathieu Chartiereace4582014-11-24 18:29:54 -0800721 Handle<mirror::DexCache> dex_cache(hs.NewHandle(declaring_class->GetDexCache()));
Ian Rogers6786a582014-10-28 12:49:06 -0700722 s = Runtime::Current()->GetClassLinker()->ResolveString(*method->GetDexFile(), string_idx,
723 dex_cache);
724 }
725 return s;
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200726}
727
Sebastien Hertzc6714852013-09-30 16:42:32 +0200728// Handles div-int, div-int/2addr, div-int/li16 and div-int/lit8 instructions.
729// Returns true on success, otherwise throws a java.lang.ArithmeticException and return false.
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200730static inline bool DoIntDivide(ShadowFrame& shadow_frame, size_t result_reg,
731 int32_t dividend, int32_t divisor)
Mathieu Chartier90443472015-07-16 20:32:27 -0700732 SHARED_REQUIRES(Locks::mutator_lock_) {
Ian Rogersf72a11d2014-10-30 15:41:08 -0700733 constexpr int32_t kMinInt = std::numeric_limits<int32_t>::min();
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200734 if (UNLIKELY(divisor == 0)) {
735 ThrowArithmeticExceptionDivideByZero();
736 return false;
737 }
738 if (UNLIKELY(dividend == kMinInt && divisor == -1)) {
739 shadow_frame.SetVReg(result_reg, kMinInt);
740 } else {
741 shadow_frame.SetVReg(result_reg, dividend / divisor);
742 }
743 return true;
744}
745
Sebastien Hertzc6714852013-09-30 16:42:32 +0200746// Handles rem-int, rem-int/2addr, rem-int/li16 and rem-int/lit8 instructions.
747// Returns true on success, otherwise throws a java.lang.ArithmeticException and return false.
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200748static inline bool DoIntRemainder(ShadowFrame& shadow_frame, size_t result_reg,
749 int32_t dividend, int32_t divisor)
Mathieu Chartier90443472015-07-16 20:32:27 -0700750 SHARED_REQUIRES(Locks::mutator_lock_) {
Ian Rogersf72a11d2014-10-30 15:41:08 -0700751 constexpr int32_t kMinInt = std::numeric_limits<int32_t>::min();
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200752 if (UNLIKELY(divisor == 0)) {
753 ThrowArithmeticExceptionDivideByZero();
754 return false;
755 }
756 if (UNLIKELY(dividend == kMinInt && divisor == -1)) {
757 shadow_frame.SetVReg(result_reg, 0);
758 } else {
759 shadow_frame.SetVReg(result_reg, dividend % divisor);
760 }
761 return true;
762}
763
Sebastien Hertzc6714852013-09-30 16:42:32 +0200764// Handles div-long and div-long-2addr instructions.
765// Returns true on success, otherwise throws a java.lang.ArithmeticException and return false.
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200766static inline bool DoLongDivide(ShadowFrame& shadow_frame, size_t result_reg,
767 int64_t dividend, int64_t divisor)
Mathieu Chartier90443472015-07-16 20:32:27 -0700768 SHARED_REQUIRES(Locks::mutator_lock_) {
Ian Rogers2e2deeb2013-09-23 11:58:57 -0700769 const int64_t kMinLong = std::numeric_limits<int64_t>::min();
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200770 if (UNLIKELY(divisor == 0)) {
771 ThrowArithmeticExceptionDivideByZero();
772 return false;
773 }
774 if (UNLIKELY(dividend == kMinLong && divisor == -1)) {
775 shadow_frame.SetVRegLong(result_reg, kMinLong);
776 } else {
777 shadow_frame.SetVRegLong(result_reg, dividend / divisor);
778 }
779 return true;
780}
781
Sebastien Hertzc6714852013-09-30 16:42:32 +0200782// Handles rem-long and rem-long-2addr instructions.
783// Returns true on success, otherwise throws a java.lang.ArithmeticException and return false.
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200784static inline bool DoLongRemainder(ShadowFrame& shadow_frame, size_t result_reg,
785 int64_t dividend, int64_t divisor)
Mathieu Chartier90443472015-07-16 20:32:27 -0700786 SHARED_REQUIRES(Locks::mutator_lock_) {
Ian Rogers2e2deeb2013-09-23 11:58:57 -0700787 const int64_t kMinLong = std::numeric_limits<int64_t>::min();
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200788 if (UNLIKELY(divisor == 0)) {
789 ThrowArithmeticExceptionDivideByZero();
790 return false;
791 }
792 if (UNLIKELY(dividend == kMinLong && divisor == -1)) {
793 shadow_frame.SetVRegLong(result_reg, 0);
794 } else {
795 shadow_frame.SetVRegLong(result_reg, dividend % divisor);
796 }
797 return true;
798}
799
Sebastien Hertzc6714852013-09-30 16:42:32 +0200800// Handles filled-new-array and filled-new-array-range instructions.
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200801// Returns true on success, otherwise throws an exception and returns false.
Sebastien Hertzd2fe10a2014-01-15 10:20:56 +0100802template <bool is_range, bool do_access_check, bool transaction_active>
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200803bool DoFilledNewArray(const Instruction* inst, const ShadowFrame& shadow_frame,
Sebastien Hertzc6714852013-09-30 16:42:32 +0200804 Thread* self, JValue* result);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200805
Sebastien Hertzc6714852013-09-30 16:42:32 +0200806// Handles packed-switch instruction.
807// Returns the branch offset to the next instruction to execute.
Sebastien Hertz3b588e02013-09-11 14:33:18 +0200808static inline int32_t DoPackedSwitch(const Instruction* inst, const ShadowFrame& shadow_frame,
809 uint16_t inst_data)
Mathieu Chartier90443472015-07-16 20:32:27 -0700810 SHARED_REQUIRES(Locks::mutator_lock_) {
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200811 DCHECK(inst->Opcode() == Instruction::PACKED_SWITCH);
812 const uint16_t* switch_data = reinterpret_cast<const uint16_t*>(inst) + inst->VRegB_31t();
Sebastien Hertz3b588e02013-09-11 14:33:18 +0200813 int32_t test_val = shadow_frame.GetVReg(inst->VRegA_31t(inst_data));
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200814 DCHECK_EQ(switch_data[0], static_cast<uint16_t>(Instruction::kPackedSwitchSignature));
815 uint16_t size = switch_data[1];
David Brazdil2ef645b2015-06-17 18:20:52 +0100816 if (size == 0) {
817 // Empty packed switch, move forward by 3 (size of PACKED_SWITCH).
818 return 3;
819 }
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200820 const int32_t* keys = reinterpret_cast<const int32_t*>(&switch_data[2]);
Roland Levillain14d90572015-07-16 10:52:26 +0100821 DCHECK_ALIGNED(keys, 4);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200822 int32_t first_key = keys[0];
823 const int32_t* targets = reinterpret_cast<const int32_t*>(&switch_data[4]);
Roland Levillain14d90572015-07-16 10:52:26 +0100824 DCHECK_ALIGNED(targets, 4);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200825 int32_t index = test_val - first_key;
826 if (index >= 0 && index < size) {
827 return targets[index];
828 } else {
829 // No corresponding value: move forward by 3 (size of PACKED_SWITCH).
830 return 3;
831 }
832}
833
Sebastien Hertzc6714852013-09-30 16:42:32 +0200834// Handles sparse-switch instruction.
835// Returns the branch offset to the next instruction to execute.
Sebastien Hertz3b588e02013-09-11 14:33:18 +0200836static inline int32_t DoSparseSwitch(const Instruction* inst, const ShadowFrame& shadow_frame,
837 uint16_t inst_data)
Mathieu Chartier90443472015-07-16 20:32:27 -0700838 SHARED_REQUIRES(Locks::mutator_lock_) {
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200839 DCHECK(inst->Opcode() == Instruction::SPARSE_SWITCH);
840 const uint16_t* switch_data = reinterpret_cast<const uint16_t*>(inst) + inst->VRegB_31t();
Sebastien Hertz3b588e02013-09-11 14:33:18 +0200841 int32_t test_val = shadow_frame.GetVReg(inst->VRegA_31t(inst_data));
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200842 DCHECK_EQ(switch_data[0], static_cast<uint16_t>(Instruction::kSparseSwitchSignature));
843 uint16_t size = switch_data[1];
Jeff Hao935e01a2015-03-20 19:44:35 -0700844 // Return length of SPARSE_SWITCH if size is 0.
845 if (size == 0) {
846 return 3;
847 }
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200848 const int32_t* keys = reinterpret_cast<const int32_t*>(&switch_data[2]);
Roland Levillain14d90572015-07-16 10:52:26 +0100849 DCHECK_ALIGNED(keys, 4);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200850 const int32_t* entries = keys + size;
Roland Levillain14d90572015-07-16 10:52:26 +0100851 DCHECK_ALIGNED(entries, 4);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200852 int lo = 0;
853 int hi = size - 1;
854 while (lo <= hi) {
855 int mid = (lo + hi) / 2;
856 int32_t foundVal = keys[mid];
857 if (test_val < foundVal) {
858 hi = mid - 1;
859 } else if (test_val > foundVal) {
860 lo = mid + 1;
861 } else {
862 return entries[mid];
863 }
864 }
865 // No corresponding value: move forward by 3 (size of SPARSE_SWITCH).
866 return 3;
867}
868
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700869template <bool _do_check>
870static inline bool DoBoxLambda(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst,
Mathieu Chartier90443472015-07-16 20:32:27 -0700871 uint16_t inst_data) SHARED_REQUIRES(Locks::mutator_lock_) {
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700872 /*
873 * box-lambda vA, vB /// opcode 0xf8, format 22x
874 * - vA is the target register where the Object representation of the closure will be stored into
875 * - vB is a closure (made by create-lambda)
876 * (also reads vB + 1)
877 */
878 uint32_t vreg_target_object = inst->VRegA_22x(inst_data);
879 uint32_t vreg_source_closure = inst->VRegB_22x();
880
Igor Murashkin6918bf12015-09-27 19:19:06 -0700881 lambda::Closure* lambda_closure = ReadLambdaClosureFromVRegsOrThrow(shadow_frame,
882 vreg_source_closure);
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700883
884 // Failed lambda target runtime check, an exception was raised.
Igor Murashkin6918bf12015-09-27 19:19:06 -0700885 if (UNLIKELY(lambda_closure == nullptr)) {
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700886 CHECK(self->IsExceptionPending());
887 return false;
888 }
889
Igor Murashkine2facc52015-07-10 13:49:08 -0700890 mirror::Object* closure_as_object =
Igor Murashkin6918bf12015-09-27 19:19:06 -0700891 Runtime::Current()->GetLambdaBoxTable()->BoxLambda(lambda_closure);
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700892
Igor Murashkine2facc52015-07-10 13:49:08 -0700893 // Failed to box the lambda, an exception was raised.
894 if (UNLIKELY(closure_as_object == nullptr)) {
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700895 CHECK(self->IsExceptionPending());
896 return false;
897 }
898
Igor Murashkine2facc52015-07-10 13:49:08 -0700899 shadow_frame.SetVRegReference(vreg_target_object, closure_as_object);
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700900 return true;
901}
902
Mathieu Chartier90443472015-07-16 20:32:27 -0700903template <bool _do_check> SHARED_REQUIRES(Locks::mutator_lock_)
Igor Murashkine2facc52015-07-10 13:49:08 -0700904static inline bool DoUnboxLambda(Thread* self,
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700905 ShadowFrame& shadow_frame,
906 const Instruction* inst,
907 uint16_t inst_data) {
908 /*
909 * unbox-lambda vA, vB, [type id] /// opcode 0xf9, format 22c
910 * - vA is the target register where the closure will be written into
911 * (also writes vA + 1)
912 * - vB is the Object representation of the closure (made by box-lambda)
913 */
914 uint32_t vreg_target_closure = inst->VRegA_22c(inst_data);
915 uint32_t vreg_source_object = inst->VRegB_22c();
916
917 // Raise NullPointerException if object is null
918 mirror::Object* boxed_closure_object = shadow_frame.GetVRegReference(vreg_source_object);
919 if (UNLIKELY(boxed_closure_object == nullptr)) {
920 ThrowNullPointerExceptionFromInterpreter();
921 return false;
922 }
923
Igor Murashkin6918bf12015-09-27 19:19:06 -0700924 lambda::Closure* unboxed_closure = nullptr;
Igor Murashkine2facc52015-07-10 13:49:08 -0700925 // Raise an exception if unboxing fails.
926 if (!Runtime::Current()->GetLambdaBoxTable()->UnboxLambda(boxed_closure_object,
Igor Murashkin6918bf12015-09-27 19:19:06 -0700927 /*out*/&unboxed_closure)) {
Igor Murashkine2facc52015-07-10 13:49:08 -0700928 CHECK(self->IsExceptionPending());
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700929 return false;
930 }
931
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700932 DCHECK(unboxed_closure != nullptr);
Igor Murashkin30c475a2015-10-06 13:59:43 -0700933 WriteLambdaClosureIntoVRegs(/*inout*/shadow_frame, *unboxed_closure, vreg_target_closure);
Igor Murashkin2ee54e22015-06-18 10:05:11 -0700934 return true;
935}
936
Ian Rogers54874942014-06-10 16:31:03 -0700937uint32_t FindNextInstructionFollowingException(Thread* self, ShadowFrame& shadow_frame,
Sebastien Hertz9f102032014-05-23 08:59:42 +0200938 uint32_t dex_pc, const instrumentation::Instrumentation* instrumentation)
Mathieu Chartier90443472015-07-16 20:32:27 -0700939 SHARED_REQUIRES(Locks::mutator_lock_);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200940
Andreas Gampe794ad762015-02-23 08:12:24 -0800941NO_RETURN void UnexpectedOpcode(const Instruction* inst, const ShadowFrame& shadow_frame)
942 __attribute__((cold))
Mathieu Chartier90443472015-07-16 20:32:27 -0700943 SHARED_REQUIRES(Locks::mutator_lock_);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200944
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200945static inline void TraceExecution(const ShadowFrame& shadow_frame, const Instruction* inst,
Ian Rogerse94652f2014-12-02 11:13:19 -0800946 const uint32_t dex_pc)
Mathieu Chartier90443472015-07-16 20:32:27 -0700947 SHARED_REQUIRES(Locks::mutator_lock_) {
Mathieu Chartiere861ebd2013-10-09 15:01:21 -0700948 constexpr bool kTracing = false;
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200949 if (kTracing) {
950#define TRACE_LOG std::cerr
Mathieu Chartiere861ebd2013-10-09 15:01:21 -0700951 std::ostringstream oss;
952 oss << PrettyMethod(shadow_frame.GetMethod())
953 << StringPrintf("\n0x%x: ", dex_pc)
Ian Rogerse94652f2014-12-02 11:13:19 -0800954 << inst->DumpString(shadow_frame.GetMethod()->GetDexFile()) << "\n";
Ian Rogersef7d42f2014-01-06 12:55:46 -0800955 for (uint32_t i = 0; i < shadow_frame.NumberOfVRegs(); ++i) {
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200956 uint32_t raw_value = shadow_frame.GetVReg(i);
957 Object* ref_value = shadow_frame.GetVRegReference(i);
Ian Rogersef7d42f2014-01-06 12:55:46 -0800958 oss << StringPrintf(" vreg%u=0x%08X", i, raw_value);
Mathieu Chartier2cebb242015-04-21 16:50:40 -0700959 if (ref_value != nullptr) {
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200960 if (ref_value->GetClass()->IsStringClass() &&
Jeff Hao848f70a2014-01-15 13:49:50 -0800961 ref_value->AsString()->GetValue() != nullptr) {
Mathieu Chartiere861ebd2013-10-09 15:01:21 -0700962 oss << "/java.lang.String \"" << ref_value->AsString()->ToModifiedUtf8() << "\"";
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200963 } else {
Mathieu Chartiere861ebd2013-10-09 15:01:21 -0700964 oss << "/" << PrettyTypeOf(ref_value);
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200965 }
966 }
967 }
Mathieu Chartiere861ebd2013-10-09 15:01:21 -0700968 TRACE_LOG << oss.str() << "\n";
Sebastien Hertz8ece0502013-08-07 11:26:41 +0200969#undef TRACE_LOG
970 }
971}
972
Sebastien Hertz1eda2262013-09-09 16:53:14 +0200973static inline bool IsBackwardBranch(int32_t branch_offset) {
974 return branch_offset <= 0;
975}
976
Sebastien Hertzc6714852013-09-30 16:42:32 +0200977// Explicitly instantiate all DoInvoke functions.
Bernhard Rosenkränzer46053622013-12-12 02:15:52 +0100978#define EXPLICIT_DO_INVOKE_TEMPLATE_DECL(_type, _is_range, _do_check) \
Mathieu Chartier90443472015-07-16 20:32:27 -0700979 template SHARED_REQUIRES(Locks::mutator_lock_) \
Bernhard Rosenkränzer46053622013-12-12 02:15:52 +0100980 bool DoInvoke<_type, _is_range, _do_check>(Thread* self, ShadowFrame& shadow_frame, \
981 const Instruction* inst, uint16_t inst_data, \
982 JValue* result)
Sebastien Hertzc6714852013-09-30 16:42:32 +0200983
984#define EXPLICIT_DO_INVOKE_ALL_TEMPLATE_DECL(_type) \
985 EXPLICIT_DO_INVOKE_TEMPLATE_DECL(_type, false, false); \
986 EXPLICIT_DO_INVOKE_TEMPLATE_DECL(_type, false, true); \
987 EXPLICIT_DO_INVOKE_TEMPLATE_DECL(_type, true, false); \
988 EXPLICIT_DO_INVOKE_TEMPLATE_DECL(_type, true, true);
989
Andreas Gampec8ccf682014-09-29 20:07:43 -0700990EXPLICIT_DO_INVOKE_ALL_TEMPLATE_DECL(kStatic) // invoke-static/range.
991EXPLICIT_DO_INVOKE_ALL_TEMPLATE_DECL(kDirect) // invoke-direct/range.
992EXPLICIT_DO_INVOKE_ALL_TEMPLATE_DECL(kVirtual) // invoke-virtual/range.
993EXPLICIT_DO_INVOKE_ALL_TEMPLATE_DECL(kSuper) // invoke-super/range.
994EXPLICIT_DO_INVOKE_ALL_TEMPLATE_DECL(kInterface) // invoke-interface/range.
Sebastien Hertzc6714852013-09-30 16:42:32 +0200995#undef EXPLICIT_DO_INVOKE_ALL_TEMPLATE_DECL
996#undef EXPLICIT_DO_INVOKE_TEMPLATE_DECL
997
Sebastien Hertzc6714852013-09-30 16:42:32 +0200998// Explicitly instantiate all DoInvokeVirtualQuick functions.
Bernhard Rosenkränzer46053622013-12-12 02:15:52 +0100999#define EXPLICIT_DO_INVOKE_VIRTUAL_QUICK_TEMPLATE_DECL(_is_range) \
Mathieu Chartier90443472015-07-16 20:32:27 -07001000 template SHARED_REQUIRES(Locks::mutator_lock_) \
Bernhard Rosenkränzer46053622013-12-12 02:15:52 +01001001 bool DoInvokeVirtualQuick<_is_range>(Thread* self, ShadowFrame& shadow_frame, \
1002 const Instruction* inst, uint16_t inst_data, \
1003 JValue* result)
Sebastien Hertzc6714852013-09-30 16:42:32 +02001004
1005EXPLICIT_DO_INVOKE_VIRTUAL_QUICK_TEMPLATE_DECL(false); // invoke-virtual-quick.
1006EXPLICIT_DO_INVOKE_VIRTUAL_QUICK_TEMPLATE_DECL(true); // invoke-virtual-quick-range.
1007#undef EXPLICIT_INSTANTIATION_DO_INVOKE_VIRTUAL_QUICK
1008
Igor Murashkin158f35c2015-06-10 15:55:30 -07001009// Explicitly instantiate all DoCreateLambda functions.
Igor Murashkin6918bf12015-09-27 19:19:06 -07001010#define EXPLICIT_DO_CREATE_LAMBDA_DECL(_do_check) \
1011template SHARED_REQUIRES(Locks::mutator_lock_) \
1012bool DoCreateLambda<_do_check>(Thread* self, \
1013 const Instruction* inst, \
1014 /*inout*/ShadowFrame& shadow_frame, \
1015 /*inout*/lambda::ClosureBuilder* closure_builder, \
1016 /*inout*/lambda::Closure* uninitialized_closure);
Igor Murashkin158f35c2015-06-10 15:55:30 -07001017
1018EXPLICIT_DO_CREATE_LAMBDA_DECL(false); // create-lambda
1019EXPLICIT_DO_CREATE_LAMBDA_DECL(true); // create-lambda
1020#undef EXPLICIT_DO_CREATE_LAMBDA_DECL
1021
1022// Explicitly instantiate all DoInvokeLambda functions.
1023#define EXPLICIT_DO_INVOKE_LAMBDA_DECL(_do_check) \
Mathieu Chartier90443472015-07-16 20:32:27 -07001024template SHARED_REQUIRES(Locks::mutator_lock_) \
Igor Murashkin158f35c2015-06-10 15:55:30 -07001025bool DoInvokeLambda<_do_check>(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst, \
1026 uint16_t inst_data, JValue* result);
1027
1028EXPLICIT_DO_INVOKE_LAMBDA_DECL(false); // invoke-lambda
1029EXPLICIT_DO_INVOKE_LAMBDA_DECL(true); // invoke-lambda
1030#undef EXPLICIT_DO_INVOKE_LAMBDA_DECL
1031
Igor Murashkin2ee54e22015-06-18 10:05:11 -07001032// Explicitly instantiate all DoBoxLambda functions.
1033#define EXPLICIT_DO_BOX_LAMBDA_DECL(_do_check) \
Mathieu Chartier90443472015-07-16 20:32:27 -07001034template SHARED_REQUIRES(Locks::mutator_lock_) \
Igor Murashkin2ee54e22015-06-18 10:05:11 -07001035bool DoBoxLambda<_do_check>(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst, \
1036 uint16_t inst_data);
1037
1038EXPLICIT_DO_BOX_LAMBDA_DECL(false); // box-lambda
1039EXPLICIT_DO_BOX_LAMBDA_DECL(true); // box-lambda
1040#undef EXPLICIT_DO_BOX_LAMBDA_DECL
1041
1042// Explicitly instantiate all DoUnBoxLambda functions.
1043#define EXPLICIT_DO_UNBOX_LAMBDA_DECL(_do_check) \
Mathieu Chartier90443472015-07-16 20:32:27 -07001044template SHARED_REQUIRES(Locks::mutator_lock_) \
Igor Murashkin2ee54e22015-06-18 10:05:11 -07001045bool DoUnboxLambda<_do_check>(Thread* self, ShadowFrame& shadow_frame, const Instruction* inst, \
1046 uint16_t inst_data);
1047
1048EXPLICIT_DO_UNBOX_LAMBDA_DECL(false); // unbox-lambda
1049EXPLICIT_DO_UNBOX_LAMBDA_DECL(true); // unbox-lambda
1050#undef EXPLICIT_DO_BOX_LAMBDA_DECL
1051
Igor Murashkin6918bf12015-09-27 19:19:06 -07001052// Explicitly instantiate all DoCaptureVariable functions.
1053#define EXPLICIT_DO_CAPTURE_VARIABLE_DECL(_do_check) \
1054template SHARED_REQUIRES(Locks::mutator_lock_) \
1055bool DoCaptureVariable<_do_check>(Thread* self, \
1056 const Instruction* inst, \
1057 ShadowFrame& shadow_frame, \
1058 lambda::ClosureBuilder* closure_builder);
Sebastien Hertzc6714852013-09-30 16:42:32 +02001059
Igor Murashkin6918bf12015-09-27 19:19:06 -07001060EXPLICIT_DO_CAPTURE_VARIABLE_DECL(false); // capture-variable
1061EXPLICIT_DO_CAPTURE_VARIABLE_DECL(true); // capture-variable
1062#undef EXPLICIT_DO_CREATE_LAMBDA_DECL
1063
1064// Explicitly instantiate all DoLiberateVariable functions.
1065#define EXPLICIT_DO_LIBERATE_VARIABLE_DECL(_do_check) \
1066template SHARED_REQUIRES(Locks::mutator_lock_) \
1067bool DoLiberateVariable<_do_check>(Thread* self, \
1068 const Instruction* inst, \
1069 size_t captured_variable_index, \
1070 ShadowFrame& shadow_frame); \
1071
1072EXPLICIT_DO_LIBERATE_VARIABLE_DECL(false); // liberate-variable
1073EXPLICIT_DO_LIBERATE_VARIABLE_DECL(true); // liberate-variable
1074#undef EXPLICIT_DO_LIBERATE_LAMBDA_DECL
Sebastien Hertz8ece0502013-08-07 11:26:41 +02001075} // namespace interpreter
1076} // namespace art
1077
1078#endif // ART_RUNTIME_INTERPRETER_INTERPRETER_COMMON_H_