1 /*
2 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #include "precompiled.hpp"
25 #include "asm/register.hpp"
26 #include "classfile/vmSymbols.hpp"
27 #include "code/compiledIC.hpp"
28 #include "code/vmreg.inline.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "compiler/disassembler.hpp"
31 #include "jvmci/jvmciEnv.hpp"
32 #include "jvmci/jvmciCompiler.hpp"
33 #include "jvmci/jvmciCodeInstaller.hpp"
34 #include "jvmci/jvmciJavaClasses.hpp"
35 #include "jvmci/jvmciCompilerToVM.hpp"
36 #include "jvmci/jvmciRuntime.hpp"
37 #include "memory/allocation.inline.hpp"
38 #include "oops/arrayOop.inline.hpp"
39 #include "oops/oop.inline.hpp"
40 #include "oops/objArrayOop.inline.hpp"
41 #include "oops/typeArrayOop.inline.hpp"
42 #include "runtime/interfaceSupport.inline.hpp"
43 #include "runtime/javaCalls.hpp"
44 #include "runtime/jniHandles.inline.hpp"
45 #include "runtime/safepointMechanism.inline.hpp"
46 #include "utilities/align.hpp"
47
48 // frequently used constants
49 // Allocate them with new so they are never destroyed (otherwise, a
50 // forced exit could destroy these objects while they are still in
51 // use).
52 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL);
53 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1);
54 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue((jint)0);
55 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1);
56 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2);
57 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location());
58
59 Method* getMethodFromHotSpotMethod(oop hotspot_method) {
60 assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity");
61 return CompilerToVM::asMethod(hotspot_method);
62 }
63
64 VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) {
65 if (location.is_null()) {
66 THROW_NULL(vmSymbols::java_lang_NullPointerException());
67 }
68
69 Handle reg(THREAD, code_Location::reg(location));
70 jint offset = code_Location::offset(location);
71
72 if (reg.not_null()) {
73 // register
74 jint number = code_Register::number(reg);
75 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL);
76 if (offset % 4 == 0) {
77 return vmReg->next(offset / 4);
78 } else {
79 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset);
80 }
81 } else {
82 // stack slot
83 if (offset % 4 == 0) {
84 VMReg vmReg = VMRegImpl::stack2reg(offset / 4);
85 if (!OopMapValue::legal_vm_reg_name(vmReg)) {
86 // This restriction only applies to VMRegs that are used in OopMap but
87 // since that's the only use of VMRegs it's simplest to put this test
88 // here. This test should also be equivalent legal_vm_reg_name but JVMCI
89 // clients can use max_oop_map_stack_stack_offset to detect this problem
90 // directly. The asserts just ensure that the tests are in agreement.
91 assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg");
92 JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)",
93 offset, CompilerToVM::Data::max_oop_map_stack_offset());
94 }
95 assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg");
96 return vmReg;
97 } else {
98 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
99 }
100 }
101 }
102
103 objArrayOop CodeInstaller::sites() {
104 return (objArrayOop) JNIHandles::resolve(_sites_handle);
105 }
106
107 arrayOop CodeInstaller::code() {
108 return (arrayOop) JNIHandles::resolve(_code_handle);
109 }
110
111 arrayOop CodeInstaller::data_section() {
112 return (arrayOop) JNIHandles::resolve(_data_section_handle);
113 }
114
115 objArrayOop CodeInstaller::data_section_patches() {
116 return (objArrayOop) JNIHandles::resolve(_data_section_patches_handle);
117 }
118
119 #ifndef PRODUCT
120 objArrayOop CodeInstaller::comments() {
121 return (objArrayOop) JNIHandles::resolve(_comments_handle);
122 }
123 #endif
124
125 oop CodeInstaller::word_kind() {
126 return JNIHandles::resolve(_word_kind_handle);
127 }
128
129 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo
130 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) {
131 Handle reference_map(THREAD, DebugInfo::referenceMap(debug_info));
132 if (reference_map.is_null()) {
133 THROW_NULL(vmSymbols::java_lang_NullPointerException());
134 }
135 if (!reference_map->is_a(HotSpotReferenceMap::klass())) {
136 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name());
137 }
138 if (!_has_wide_vector && SharedRuntime::is_wide_vector(HotSpotReferenceMap::maxRegisterSize(reference_map))) {
139 if (SharedRuntime::polling_page_vectors_safepoint_handler_blob() == NULL) {
140 JVMCI_ERROR_NULL("JVMCI is producing code using vectors larger than the runtime supports");
141 }
142 _has_wide_vector = true;
143 }
144 OopMap* map = new OopMap(_total_frame_size, _parameter_count);
145 objArrayHandle objects(THREAD, HotSpotReferenceMap::objects(reference_map));
146 objArrayHandle derivedBase(THREAD, HotSpotReferenceMap::derivedBase(reference_map));
147 typeArrayHandle sizeInBytes(THREAD, HotSpotReferenceMap::sizeInBytes(reference_map));
148 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
149 THROW_NULL(vmSymbols::java_lang_NullPointerException());
150 }
151 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) {
152 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length());
153 }
154 for (int i = 0; i < objects->length(); i++) {
155 Handle location(THREAD, objects->obj_at(i));
156 Handle baseLocation(THREAD, derivedBase->obj_at(i));
157 int bytes = sizeInBytes->int_at(i);
158
159 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL);
160 if (baseLocation.not_null()) {
161 // derived oop
162 #ifdef _LP64
163 if (bytes == 8) {
164 #else
165 if (bytes == 4) {
166 #endif
167 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL);
168 map->set_derived_oop(vmReg, baseReg);
169 } else {
170 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
171 }
172 #ifdef _LP64
173 } else if (bytes == 8) {
174 // wide oop
175 map->set_oop(vmReg);
176 } else if (bytes == 4) {
177 // narrow oop
178 map->set_narrowoop(vmReg);
179 #else
180 } else if (bytes == 4) {
181 map->set_oop(vmReg);
182 #endif
183 } else {
184 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
185 }
186 }
187
188 Handle callee_save_info(THREAD, (oop) DebugInfo::calleeSaveInfo(debug_info));
189 if (callee_save_info.not_null()) {
190 objArrayHandle registers(THREAD, RegisterSaveLayout::registers(callee_save_info));
191 typeArrayHandle slots(THREAD, RegisterSaveLayout::slots(callee_save_info));
192 for (jint i = 0; i < slots->length(); i++) {
193 Handle jvmci_reg (THREAD, registers->obj_at(i));
194 jint jvmci_reg_number = code_Register::number(jvmci_reg);
195 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
196 // HotSpot stack slots are 4 bytes
197 jint jvmci_slot = slots->int_at(i);
198 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
199 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
200 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
201 #ifdef _LP64
202 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
203 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
204 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
205 #endif
206 }
207 }
208 return map;
209 }
210
211 AOTOopRecorder::AOTOopRecorder(Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) {
212 _meta_refs = new GrowableArray<jobject>();
213 }
214
215 int AOTOopRecorder::nr_meta_refs() const {
216 return _meta_refs->length();
217 }
218
219 jobject AOTOopRecorder::meta_element(int pos) const {
220 return _meta_refs->at(pos);
221 }
222
223 int AOTOopRecorder::find_index(Metadata* h) {
224 JavaThread* THREAD = JavaThread::current();
225 int oldCount = metadata_count();
226 int index = this->OopRecorder::find_index(h);
227 int newCount = metadata_count();
228
229 if (oldCount == newCount) {
230 // found a match
231 return index;
232 }
233
234 vmassert(index + 1 == newCount, "must be last");
235
236 Klass* klass = NULL;
237 oop result = NULL;
238 if (h->is_klass()) {
239 klass = (Klass*) h;
240 result = CompilerToVM::get_jvmci_type(klass, CATCH);
241 } else if (h->is_method()) {
242 Method* method = (Method*) h;
243 methodHandle mh(method);
244 result = CompilerToVM::get_jvmci_method(method, CATCH);
245 }
246 jobject ref = JNIHandles::make_local(THREAD, result);
247 record_meta_ref(ref, index);
248
249 return index;
250 }
251
252 int AOTOopRecorder::find_index(jobject h) {
253 if (h == NULL) {
254 return 0;
255 }
256 oop javaMirror = JNIHandles::resolve(h);
257 Klass* klass = java_lang_Class::as_Klass(javaMirror);
258 return find_index(klass);
259 }
260
261 void AOTOopRecorder::record_meta_ref(jobject o, int index) {
262 assert(index > 0, "must be 1..n");
263 index -= 1; // reduce by one to convert to array index
264
265 assert(index == _meta_refs->length(), "must be last");
266 _meta_refs->append(o);
267 }
268
269 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
270 /*
271 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
272 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
273 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
274 * base class (Metadata* or MetaspaceObj*).
275 */
276 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
277 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
278 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
279 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
280 int index = _oop_recorder->find_index(klass);
281 section->relocate(dest, metadata_Relocation::spec(index));
282 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
283 return klass;
284 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
285 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
286 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
287 int index = _oop_recorder->find_index(method);
288 section->relocate(dest, metadata_Relocation::spec(index));
289 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
290 return method;
291 } else {
292 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
293 }
294 }
295
296 #ifdef _LP64
297 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
298 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
299 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
300
301 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
302 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
303 }
304
305 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
306 int index = _oop_recorder->find_index(klass);
307 section->relocate(dest, metadata_Relocation::spec(index));
308 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
309 return Klass::encode_klass(klass);
310 }
311 #endif
312
313 Location::Type CodeInstaller::get_oop_type(Thread* thread, Handle value) {
314 Handle valueKind(thread, Value::valueKind(value));
315 Handle platformKind(thread, ValueKind::platformKind(valueKind));
316
317 if (platformKind == word_kind()) {
318 return Location::oop;
319 } else {
320 return Location::narrowoop;
321 }
322 }
323
324 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
325 second = NULL;
326 if (value.is_null()) {
327 THROW_NULL(vmSymbols::java_lang_NullPointerException());
328 } else if (value == Value::ILLEGAL()) {
329 if (type != T_ILLEGAL) {
330 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
331 }
332 return _illegal_value;
333 } else if (value->is_a(RegisterValue::klass())) {
334 Handle reg(THREAD, RegisterValue::reg(value));
335 jint number = code_Register::number(reg);
336 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL);
337 if (is_general_purpose_reg(hotspotRegister)) {
338 Location::Type locationType;
339 if (type == T_OBJECT) {
340 locationType = get_oop_type(THREAD, value);
341 } else if (type == T_LONG) {
342 locationType = Location::lng;
343 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
344 locationType = Location::int_in_long;
345 } else {
346 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
347 }
348 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
349 if (type == T_LONG) {
350 second = value;
351 }
352 return value;
353 } else {
354 Location::Type locationType;
355 if (type == T_FLOAT) {
356 // this seems weird, but the same value is used in c1_LinearScan
357 locationType = Location::normal;
358 } else if (type == T_DOUBLE) {
359 locationType = Location::dbl;
360 } else {
361 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
362 }
363 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
364 if (type == T_DOUBLE) {
365 second = value;
366 }
367 return value;
368 }
369 } else if (value->is_a(StackSlot::klass())) {
370 jint offset = StackSlot::offset(value);
371 if (StackSlot::addFrameSize(value)) {
372 offset += _total_frame_size;
373 }
374
375 Location::Type locationType;
376 if (type == T_OBJECT) {
377 locationType = get_oop_type(THREAD, value);
378 } else if (type == T_LONG) {
379 locationType = Location::lng;
380 } else if (type == T_DOUBLE) {
381 locationType = Location::dbl;
382 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
383 locationType = Location::normal;
384 } else {
385 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
386 }
387 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
388 if (type == T_DOUBLE || type == T_LONG) {
389 second = value;
390 }
391 return value;
392 } else if (value->is_a(JavaConstant::klass())) {
393 if (value->is_a(PrimitiveConstant::klass())) {
394 if (value->is_a(RawConstant::klass())) {
395 jlong prim = PrimitiveConstant::primitive(value);
396 return new ConstantLongValue(prim);
397 } else {
398 Handle primitive_constant_kind(THREAD, PrimitiveConstant::kind(value));
399 BasicType constantType = JVMCIRuntime::kindToBasicType(primitive_constant_kind, CHECK_NULL);
400 if (type != constantType) {
401 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
402 }
403 if (type == T_INT || type == T_FLOAT) {
404 jint prim = (jint)PrimitiveConstant::primitive(value);
405 switch (prim) {
406 case -1: return _int_m1_scope_value;
407 case 0: return _int_0_scope_value;
408 case 1: return _int_1_scope_value;
409 case 2: return _int_2_scope_value;
410 default: return new ConstantIntValue(prim);
411 }
412 } else if (type == T_LONG || type == T_DOUBLE) {
413 jlong prim = PrimitiveConstant::primitive(value);
414 second = _int_1_scope_value;
415 return new ConstantLongValue(prim);
416 } else {
417 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
418 }
419 }
420 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) {
421 if (type == T_OBJECT) {
422 return _oop_null_scope_value;
423 } else {
424 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
425 }
426 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) {
427 if (type == T_OBJECT) {
428 oop obj = HotSpotObjectConstantImpl::object(value);
429 if (obj == NULL) {
430 JVMCI_ERROR_NULL("null value must be in NullConstant");
431 }
432 return new ConstantOopWriteValue(JNIHandles::make_local(obj));
433 } else {
434 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
435 }
436 }
437 } else if (value->is_a(VirtualObject::klass())) {
438 if (type == T_OBJECT) {
439 int id = VirtualObject::id(value);
440 if (0 <= id && id < objects->length()) {
441 ScopeValue* object = objects->at(id);
442 if (object != NULL) {
443 return object;
444 }
445 }
446 JVMCI_ERROR_NULL("unknown virtual object id %d", id);
447 } else {
448 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
449 }
450 }
451
452 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name())
453 }
454
455 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
456 // Might want a HandleMark here.
457 Handle type(THREAD, VirtualObject::type(value));
458 int id = VirtualObject::id(value);
459 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
460 Klass* klass = java_lang_Class::as_Klass(javaMirror);
461 bool isLongArray = klass == Universe::longArrayKlassObj();
462
463 objArrayHandle values(THREAD, VirtualObject::values(value));
464 objArrayHandle slotKinds(THREAD, VirtualObject::slotKinds(value));
465 for (jint i = 0; i < values->length(); i++) {
466 HandleMark hm(THREAD);
467 ScopeValue* cur_second = NULL;
468 Handle object(THREAD, values->obj_at(i));
469 Handle slot_kind (THREAD, slotKinds->obj_at(i));
470 BasicType type = JVMCIRuntime::kindToBasicType(slot_kind, CHECK);
471 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK);
472
473 if (isLongArray && cur_second == NULL) {
474 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
475 // add an int 0 constant
476 cur_second = _int_0_scope_value;
477 }
478
479 if (cur_second != NULL) {
480 sv->field_values()->append(cur_second);
481 }
482 assert(value != NULL, "missing value");
483 sv->field_values()->append(value);
484 }
485 }
486
487 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
488 if (value.is_null()) {
489 THROW_NULL(vmSymbols::java_lang_NullPointerException());
490 }
491 if (!value->is_a(StackLockValue::klass())) {
492 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name());
493 }
494
495 ScopeValue* second = NULL;
496 Handle stack_lock_owner(THREAD, StackLockValue::owner(value));
497 ScopeValue* owner_value = get_scope_value(stack_lock_owner, T_OBJECT, objects, second, CHECK_NULL);
498 assert(second == NULL, "monitor cannot occupy two stack slots");
499
500 Handle stack_lock_slot(THREAD, StackLockValue::slot(value));
501 ScopeValue* lock_data_value = get_scope_value(stack_lock_slot, T_LONG, objects, second, CHECK_NULL);
502 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
503 assert(lock_data_value->is_location(), "invalid monitor location");
504 Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
505
506 bool eliminated = false;
507 if (StackLockValue::eliminated(value)) {
508 eliminated = true;
509 }
510
511 return new MonitorValue(owner_value, lock_data_loc, eliminated);
512 }
513
514 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) {
515 JavaThread* thread = JavaThread::current();
516 assert(THREAD == thread, "");
517 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
518 _oop_recorder = recorder;
519 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
520 objArrayHandle assumptions(THREAD, HotSpotCompiledCode::assumptions(compiled_code));
521 if (!assumptions.is_null()) {
522 int length = assumptions->length();
523 for (int i = 0; i < length; ++i) {
524 Handle assumption(THREAD, assumptions->obj_at(i));
525 if (!assumption.is_null()) {
526 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) {
527 assumption_NoFinalizableSubclass(THREAD, assumption);
528 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) {
529 assumption_ConcreteSubtype(THREAD, assumption);
530 } else if (assumption->klass() == Assumptions_LeafType::klass()) {
531 assumption_LeafType(THREAD, assumption);
532 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) {
533 assumption_ConcreteMethod(THREAD, assumption);
534 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) {
535 assumption_CallSiteTargetValue(THREAD, assumption);
536 } else {
537 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name());
538 }
539 }
540 }
541 }
542 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
543 objArrayHandle methods(THREAD, HotSpotCompiledCode::methods(compiled_code));
544 if (!methods.is_null()) {
545 int length = methods->length();
546 for (int i = 0; i < length; ++i) {
547 Handle method_handle(THREAD, methods->obj_at(i));
548 methodHandle method = getMethodFromHotSpotMethod(method_handle());
549 _dependencies->assert_evol_method(method());
550 }
551 }
552 }
553 }
554
555 RelocBuffer::~RelocBuffer() {
556 if (_buffer != NULL) {
557 FREE_C_HEAP_ARRAY(char, _buffer);
558 }
559 }
560
561 address RelocBuffer::begin() const {
562 if (_buffer != NULL) {
563 return (address) _buffer;
564 }
565 return (address) _static_buffer;
566 }
567
568 void RelocBuffer::set_size(size_t bytes) {
569 assert(bytes <= _size, "can't grow in size!");
570 _size = bytes;
571 }
572
573 void RelocBuffer::ensure_size(size_t bytes) {
574 assert(_buffer == NULL, "can only be used once");
575 assert(_size == 0, "can only be used once");
576 if (bytes >= RelocBuffer::stack_size) {
577 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal);
578 }
579 _size = bytes;
580 }
581
582 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) {
583 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
584 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
585 AOTOopRecorder* recorder = new AOTOopRecorder(&_arena, true);
586 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
587
588 metadata.set_oop_recorder(recorder);
589
590 // Get instructions and constants CodeSections early because we need it.
591 _instructions = buffer.insts();
592 _constants = buffer.consts();
593
594 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
595 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, false, CHECK_OK);
596 if (result != JVMCIEnv::ok) {
597 return result;
598 }
599
600 _debug_recorder->pcs_size(); // create the sentinel record
601
602 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
603
604 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
605 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
606 metadata.set_exception_table(&_exception_handler_table);
607
608 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
609
610 reloc_buffer->ensure_size(buffer.total_relocation_size());
611 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
612 reloc_buffer->set_size(size);
613 return JVMCIEnv::ok;
614 }
615
616 // constructor used to create a method
617 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) {
618 CodeBuffer buffer("JVMCI Compiler CodeBuffer");
619 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
620 OopRecorder* recorder = new OopRecorder(&_arena, true);
621 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
622
623 // Get instructions and constants CodeSections early because we need it.
624 _instructions = buffer.insts();
625 _constants = buffer.consts();
626
627 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
628 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, true, CHECK_OK);
629 if (result != JVMCIEnv::ok) {
630 return result;
631 }
632
633 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
634
635 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
636 oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
637 if (oopDesc::is_null(stubName)) {
638 JVMCI_ERROR_OK("stub should have a name");
639 }
640 char* name = strdup(java_lang_String::as_utf8_string(stubName));
641 cb = RuntimeStub::new_runtime_stub(name,
642 &buffer,
643 CodeOffsets::frame_never_safe,
644 stack_slots,
645 _debug_recorder->_oopmaps,
646 false);
647 result = JVMCIEnv::ok;
648 } else {
649 nmethod* nm = NULL;
650 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code));
651 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code);
652 jint id = HotSpotCompiledNmethod::id(compiled_code);
653 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE;
654 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code);
655 if (id == -1) {
656 // Make sure a valid compile_id is associated with every compile
657 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
658 }
659 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
660 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table,
661 compiler, _debug_recorder, _dependencies, env, id,
662 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log);
663 cb = nm->as_codeblob_or_null();
664 if (nm != NULL && env == NULL) {
665 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
666 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
667 if (!printnmethods && (PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers)) {
668 nm->print_nmethod(printnmethods);
669 }
670 DirectivesStack::release(directive);
671 }
672 }
673
674 if (cb != NULL) {
675 // Make sure the pre-calculated constants section size was correct.
676 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
677 }
678 return result;
679 }
680
681 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) {
682 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
683 Handle hotspotJavaMethod(THREAD, HotSpotCompiledNmethod::method(compiled_code));
684 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod());
685 _parameter_count = method->size_of_parameters();
686 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
687 } else {
688 // Must be a HotSpotCompiledRuntimeStub.
689 // Only used in OopMap constructor for non-product builds
690 _parameter_count = 0;
691 }
692 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code));
693
694 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code));
695 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code);
696 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code);
697
698 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code);
699 if (deoptRescueSlot == NULL) {
700 _orig_pc_offset = -1;
701 } else {
702 _orig_pc_offset = StackSlot::offset(deoptRescueSlot);
703 if (StackSlot::addFrameSize(deoptRescueSlot)) {
704 _orig_pc_offset += _total_frame_size;
705 }
706 if (_orig_pc_offset < 0) {
707 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
708 }
709 }
710
711 // Pre-calculate the constants section size. This is required for PC-relative addressing.
712 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code));
713 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) {
714 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code));
715 }
716 _constants_size = data_section()->length();
717
718 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code));
719
720 #ifndef PRODUCT
721 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code));
722 #endif
723
724 _next_call_type = INVOKE_INVALID;
725
726 _has_wide_vector = false;
727
728 oop arch = TargetDescription::arch(target);
729 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch));
730 }
731
732 int CodeInstaller::estimate_stubs_size(TRAPS) {
733 // Estimate the number of static and aot call stubs that might be emitted.
734 int static_call_stubs = 0;
735 int aot_call_stubs = 0;
736 int trampoline_stubs = 0;
737 objArrayOop sites = this->sites();
738 for (int i = 0; i < sites->length(); i++) {
739 oop site = sites->obj_at(i);
740 if (site != NULL) {
741 if (site->is_a(site_Mark::klass())) {
742 oop id_obj = site_Mark::id(site);
743 if (id_obj != NULL) {
744 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) {
745 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name());
746 }
747 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
748 switch (id) {
749 case INVOKEINTERFACE:
750 case INVOKEVIRTUAL:
751 trampoline_stubs++;
752 break;
753 case INVOKESTATIC:
754 case INVOKESPECIAL:
755 static_call_stubs++;
756 trampoline_stubs++;
757 break;
758 default:
759 break;
760 }
761 }
762 }
763 if (UseAOT && site->is_a(site_Call::klass())) {
764 oop target = site_Call::target(site);
765 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
766 if (!target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
767 // Add far aot trampolines.
768 aot_call_stubs++;
769 }
770 }
771 }
772 }
773 int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size();
774 size += trampoline_stubs * CompiledStaticCall::to_trampoline_stub_size();
775 #if INCLUDE_AOT
776 size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size();
777 #endif
778 return size;
779 }
780
781 // perform data and call relocation on the CodeBuffer
782 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, TRAPS) {
783 HandleMark hm;
784 objArrayHandle sites(THREAD, this->sites());
785 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo));
786
787 // Allocate enough space in the stub section for the static call
788 // stubs. Stubs have extra relocs but they are managed by the stub
789 // section itself so they don't need to be accounted for in the
790 // locs_buffer above.
791 int stubs_size = estimate_stubs_size(CHECK_OK);
792 int total_size = align_up(_code_size, buffer.insts()->alignment()) + align_up(_constants_size, buffer.consts()->alignment()) + align_up(stubs_size, buffer.stubs()->alignment());
793
794 if (check_size && total_size > JVMCINMethodSizeLimit) {
795 return JVMCIEnv::code_too_large;
796 }
797
798 buffer.initialize(total_size, locs_buffer_size);
799 if (buffer.blob() == NULL) {
800 return JVMCIEnv::cache_full;
801 }
802 buffer.initialize_stubs_size(stubs_size);
803 buffer.initialize_consts_size(_constants_size);
804
805 _debug_recorder = new DebugInformationRecorder(_oop_recorder);
806 _debug_recorder->set_oopmaps(new OopMapSet());
807
808 buffer.initialize_oop_recorder(_oop_recorder);
809
810 // copy the constant data into the newly created CodeBuffer
811 address end_data = _constants->start() + _constants_size;
812 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size);
813 _constants->set_end(end_data);
814
815 // copy the code into the newly created CodeBuffer
816 address end_pc = _instructions->start() + _code_size;
817 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
818 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size);
819 _instructions->set_end(end_pc);
820
821 for (int i = 0; i < data_section_patches()->length(); i++) {
822 HandleMark hm(THREAD);
823 Handle patch(THREAD, data_section_patches()->obj_at(i));
824 if (patch.is_null()) {
825 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
826 }
827 Handle reference(THREAD, site_DataPatch::reference(patch));
828 if (reference.is_null()) {
829 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
830 }
831 if (!reference->is_a(site_ConstantReference::klass())) {
832 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
833 }
834 Handle constant(THREAD, site_ConstantReference::constant(reference));
835 if (constant.is_null()) {
836 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
837 }
838 address dest = _constants->start() + site_Site::pcOffset(patch);
839 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
840 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
841 #ifdef _LP64
842 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK);
843 #else
844 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
845 #endif
846 } else {
847 *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK);
848 }
849 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
850 Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant));
851 jobject value = JNIHandles::make_local(obj());
852 int oop_index = _oop_recorder->find_index(value);
853
854 if (HotSpotObjectConstantImpl::compressed(constant)) {
855 #ifdef _LP64
856 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
857 #else
858 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
859 #endif
860 } else {
861 _constants->relocate(dest, oop_Relocation::spec(oop_index));
862 }
863 } else {
864 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
865 }
866 }
867 jint last_pc_offset = -1;
868 for (int i = 0; i < sites->length(); i++) {
869 HandleMark hm(THREAD);
870 Handle site(THREAD, sites->obj_at(i));
871 if (site.is_null()) {
872 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
873 }
874
875 jint pc_offset = site_Site::pcOffset(site);
876
877 if (site->is_a(site_Call::klass())) {
878 TRACE_jvmci_4("call at %i", pc_offset);
879 site_Call(buffer, pc_offset, site, CHECK_OK);
880 } else if (site->is_a(site_Infopoint::klass())) {
881 // three reasons for infopoints denote actual safepoints
882 oop reason = site_Infopoint::reason(site);
883 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) {
884 TRACE_jvmci_4("safepoint at %i", pc_offset);
885 site_Safepoint(buffer, pc_offset, site, CHECK_OK);
886 if (_orig_pc_offset < 0) {
887 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
888 }
889 } else {
890 TRACE_jvmci_4("infopoint at %i", pc_offset);
891 site_Infopoint(buffer, pc_offset, site, CHECK_OK);
892 }
893 } else if (site->is_a(site_DataPatch::klass())) {
894 TRACE_jvmci_4("datapatch at %i", pc_offset);
895 site_DataPatch(buffer, pc_offset, site, CHECK_OK);
896 } else if (site->is_a(site_Mark::klass())) {
897 TRACE_jvmci_4("mark at %i", pc_offset);
898 site_Mark(buffer, pc_offset, site, CHECK_OK);
899 } else if (site->is_a(site_ExceptionHandler::klass())) {
900 TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
901 site_ExceptionHandler(pc_offset, site);
902 } else {
903 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name());
904 }
905 last_pc_offset = pc_offset;
906
907 JavaThread* thread = JavaThread::current();
908 if (SafepointMechanism::poll(thread)) {
909 // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
910 ThreadToNativeFromVM ttnfv(thread);
911 }
912 }
913
914 #ifndef PRODUCT
915 if (comments() != NULL) {
916 for (int i = 0; i < comments()->length(); i++) {
917 oop comment = comments()->obj_at(i);
918 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce");
919 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment);
920 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment));
921 buffer.block_comment(offset, text);
922 }
923 }
924 #endif
925 return JVMCIEnv::ok;
926 }
927
928 void CodeInstaller::assumption_NoFinalizableSubclass(Thread* thread, Handle assumption) {
929 Handle receiverType_handle (thread, Assumptions_NoFinalizableSubclass::receiverType(assumption()));
930 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle));
931 _dependencies->assert_has_no_finalizable_subclasses(receiverType);
932 }
933
934 void CodeInstaller::assumption_ConcreteSubtype(Thread* thread, Handle assumption) {
935 Handle context_handle (thread, Assumptions_ConcreteSubtype::context(assumption()));
936 Handle subtype_handle (thread, Assumptions_ConcreteSubtype::subtype(assumption()));
937 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
938 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle));
939
940 assert(context->is_abstract(), "");
941 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
942 }
943
944 void CodeInstaller::assumption_LeafType(Thread* thread, Handle assumption) {
945 Handle context_handle (thread, Assumptions_LeafType::context(assumption()));
946 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
947
948 _dependencies->assert_leaf_type(context);
949 }
950
951 void CodeInstaller::assumption_ConcreteMethod(Thread* thread, Handle assumption) {
952 Handle impl_handle (thread, Assumptions_ConcreteMethod::impl(assumption()));
953 Handle context_handle (thread, Assumptions_ConcreteMethod::context(assumption()));
954
955 methodHandle impl = getMethodFromHotSpotMethod(impl_handle());
956 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
957
958 _dependencies->assert_unique_concrete_method(context, impl());
959 }
960
961 void CodeInstaller::assumption_CallSiteTargetValue(Thread* thread, Handle assumption) {
962 Handle callSite(thread, Assumptions_CallSiteTargetValue::callSite(assumption()));
963 Handle methodHandle(thread, Assumptions_CallSiteTargetValue::methodHandle(assumption()));
964
965 _dependencies->assert_call_site_target_value(callSite(), methodHandle());
966 }
967
968 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) {
969 jint handler_offset = site_ExceptionHandler::handlerPos(exc);
970
971 // Subtable header
972 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
973
974 // Subtable entry
975 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
976 }
977
978 // If deoptimization happens, the interpreter should reexecute these bytecodes.
979 // This function mainly helps the compilers to set up the reexecute bit.
980 static bool bytecode_should_reexecute(Bytecodes::Code code) {
981 switch (code) {
982 case Bytecodes::_invokedynamic:
983 case Bytecodes::_invokevirtual:
984 case Bytecodes::_invokeinterface:
985 case Bytecodes::_invokespecial:
986 case Bytecodes::_invokestatic:
987 return false;
988 default:
989 return true;
990 }
991 return true;
992 }
993
994 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) {
995 objArrayHandle virtualObjects(THREAD, DebugInfo::virtualObjectMapping(debug_info));
996 if (virtualObjects.is_null()) {
997 return NULL;
998 }
999 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL);
1000 // Create the unique ObjectValues
1001 for (int i = 0; i < virtualObjects->length(); i++) {
1002 HandleMark hm(THREAD);
1003 Handle value(THREAD, virtualObjects->obj_at(i));
1004 int id = VirtualObject::id(value);
1005 Handle type(THREAD, VirtualObject::type(value));
1006 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
1007 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror)));
1008 if (id < 0 || id >= objects->length()) {
1009 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
1010 }
1011 if (objects->at(id) != NULL) {
1012 JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
1013 }
1014 objects->at_put(id, sv);
1015 }
1016 // All the values which could be referenced by the VirtualObjects
1017 // exist, so now describe all the VirtualObjects themselves.
1018 for (int i = 0; i < virtualObjects->length(); i++) {
1019 HandleMark hm(THREAD);
1020 Handle value(THREAD, virtualObjects->obj_at(i));
1021 int id = VirtualObject::id(value);
1022 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL);
1023 }
1024 _debug_recorder->dump_object_pool(objects);
1025 return objects;
1026 }
1027
1028 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, bool return_oop, TRAPS) {
1029 Handle position(THREAD, DebugInfo::bytecodePosition(debug_info));
1030 if (position.is_null()) {
1031 // Stubs do not record scope info, just oop maps
1032 return;
1033 }
1034
1035 GrowableArray<ScopeValue*>* objectMapping;
1036 if (scope_mode == CodeInstaller::FullFrame) {
1037 objectMapping = record_virtual_objects(debug_info, CHECK);
1038 } else {
1039 objectMapping = NULL;
1040 }
1041 record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, CHECK);
1042 }
1043
1044 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, TRAPS) {
1045 Handle frame;
1046 if (scope_mode == CodeInstaller::FullFrame) {
1047 if (!position->is_a(BytecodeFrame::klass())) {
1048 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
1049 }
1050 frame = position;
1051 }
1052 Handle caller_frame (THREAD, BytecodePosition::caller(position));
1053 if (caller_frame.not_null()) {
1054 record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, CHECK);
1055 }
1056
1057 Handle hotspot_method (THREAD, BytecodePosition::method(position));
1058 Method* method = getMethodFromHotSpotMethod(hotspot_method());
1059 jint bci = BytecodePosition::bci(position);
1060 if (bci == BytecodeFrame::BEFORE_BCI()) {
1061 bci = SynchronizationEntryBCI;
1062 }
1063
1064 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
1065
1066 bool reexecute = false;
1067 if (frame.not_null()) {
1068 if (bci == SynchronizationEntryBCI){
1069 reexecute = false;
1070 } else {
1071 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
1072 reexecute = bytecode_should_reexecute(code);
1073 if (frame.not_null()) {
1074 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE);
1075 }
1076 }
1077 }
1078
1079 DebugToken* locals_token = NULL;
1080 DebugToken* expressions_token = NULL;
1081 DebugToken* monitors_token = NULL;
1082 bool throw_exception = false;
1083
1084 if (frame.not_null()) {
1085 jint local_count = BytecodeFrame::numLocals(frame);
1086 jint expression_count = BytecodeFrame::numStack(frame);
1087 jint monitor_count = BytecodeFrame::numLocks(frame);
1088 objArrayHandle values(THREAD, BytecodeFrame::values(frame));
1089 objArrayHandle slotKinds(THREAD, BytecodeFrame::slotKinds(frame));
1090
1091 if (values.is_null() || slotKinds.is_null()) {
1092 THROW(vmSymbols::java_lang_NullPointerException());
1093 }
1094 if (local_count + expression_count + monitor_count != values->length()) {
1095 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count);
1096 }
1097 if (local_count + expression_count != slotKinds->length()) {
1098 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count);
1099 }
1100
1101 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
1102 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
1103 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
1104
1105 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length());
1106 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
1107
1108 for (jint i = 0; i < values->length(); i++) {
1109 HandleMark hm(THREAD);
1110 ScopeValue* second = NULL;
1111 Handle value(THREAD, values->obj_at(i));
1112 if (i < local_count) {
1113 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1114 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1115 if (second != NULL) {
1116 locals->append(second);
1117 }
1118 locals->append(first);
1119 } else if (i < local_count + expression_count) {
1120 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1121 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1122 if (second != NULL) {
1123 expressions->append(second);
1124 }
1125 expressions->append(first);
1126 } else {
1127 MonitorValue *monitor = get_monitor_value(value, objects, CHECK);
1128 monitors->append(monitor);
1129 }
1130 if (second != NULL) {
1131 i++;
1132 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) {
1133 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
1134 }
1135 }
1136 }
1137
1138 locals_token = _debug_recorder->create_scope_values(locals);
1139 expressions_token = _debug_recorder->create_scope_values(expressions);
1140 monitors_token = _debug_recorder->create_monitor_values(monitors);
1141
1142 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE;
1143 }
1144
1145 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop,
1146 locals_token, expressions_token, monitors_token);
1147 }
1148
1149 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1150 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1151 if (debug_info.is_null()) {
1152 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1153 }
1154
1155 // address instruction = _instructions->start() + pc_offset;
1156 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1157 OopMap *map = create_oop_map(debug_info, CHECK);
1158 _debug_recorder->add_safepoint(pc_offset, map);
1159 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1160 _debug_recorder->end_safepoint(pc_offset);
1161 }
1162
1163 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1164 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1165 if (debug_info.is_null()) {
1166 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1167 }
1168
1169 // We'd like to check that pc_offset is greater than the
1170 // last pc recorded with _debug_recorder (raising an exception if not)
1171 // but DebugInformationRecorder doesn't have sufficient public API.
1172
1173 _debug_recorder->add_non_safepoint(pc_offset);
1174 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK);
1175 _debug_recorder->end_non_safepoint(pc_offset);
1176 }
1177
1178 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1179 Handle target(THREAD, site_Call::target(site));
1180 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
1181
1182 Handle hotspot_method; // JavaMethod
1183 Handle foreign_call;
1184
1185 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
1186 foreign_call = target;
1187 } else {
1188 hotspot_method = target;
1189 }
1190
1191 Handle debug_info (THREAD, site_Call::debugInfo(site));
1192
1193 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type");
1194
1195 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1196 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK);
1197
1198 if (debug_info.not_null()) {
1199 OopMap *map = create_oop_map(debug_info, CHECK);
1200 _debug_recorder->add_safepoint(next_pc_offset, map);
1201
1202 bool return_oop = hotspot_method.not_null() && getMethodFromHotSpotMethod(hotspot_method())->is_returning_oop();
1203
1204 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, CHECK);
1205 }
1206
1207 if (foreign_call.not_null()) {
1208 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call);
1209 if (_immutable_pic_compilation) {
1210 // Use fake short distance during PIC compilation.
1211 foreign_call_destination = (jlong)(_instructions->start() + pc_offset);
1212 }
1213 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK);
1214 } else { // method != NULL
1215 if (debug_info.is_null()) {
1216 JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1217 }
1218
1219 TRACE_jvmci_3("method call");
1220 CodeInstaller::pd_relocate_JavaMethod(buffer, hotspot_method, pc_offset, CHECK);
1221 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1222 // Need a static call stub for transitions from compiled to interpreted.
1223 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1224 }
1225 #if INCLUDE_AOT
1226 // Trampoline to far aot code.
1227 CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset);
1228 #endif
1229 }
1230
1231 _next_call_type = INVOKE_INVALID;
1232
1233 if (debug_info.not_null()) {
1234 _debug_recorder->end_safepoint(next_pc_offset);
1235 }
1236 }
1237
1238 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1239 Handle reference(THREAD, site_DataPatch::reference(site));
1240 if (reference.is_null()) {
1241 THROW(vmSymbols::java_lang_NullPointerException());
1242 } else if (reference->is_a(site_ConstantReference::klass())) {
1243 Handle constant(THREAD, site_ConstantReference::constant(reference));
1244 if (constant.is_null()) {
1245 THROW(vmSymbols::java_lang_NullPointerException());
1246 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
1247 if (!_immutable_pic_compilation) {
1248 // Do not patch during PIC compilation.
1249 pd_patch_OopConstant(pc_offset, constant, CHECK);
1250 }
1251 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
1252 if (!_immutable_pic_compilation) {
1253 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK);
1254 }
1255 } else if (constant->is_a(HotSpotSentinelConstant::klass())) {
1256 if (!_immutable_pic_compilation) {
1257 JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", constant->klass()->signature_name());
1258 }
1259 } else {
1260 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name());
1261 }
1262 } else if (reference->is_a(site_DataSectionReference::klass())) {
1263 int data_offset = site_DataSectionReference::offset(reference);
1264 if (0 <= data_offset && data_offset < _constants_size) {
1265 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK);
1266 } else {
1267 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1268 }
1269 } else {
1270 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name());
1271 }
1272 }
1273
1274 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1275 Handle id_obj (THREAD, site_Mark::id(site));
1276
1277 if (id_obj.not_null()) {
1278 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) {
1279 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name());
1280 }
1281 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
1282
1283 address pc = _instructions->start() + pc_offset;
1284
1285 switch (id) {
1286 case UNVERIFIED_ENTRY:
1287 _offsets.set_value(CodeOffsets::Entry, pc_offset);
1288 break;
1289 case VERIFIED_ENTRY:
1290 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1291 break;
1292 case OSR_ENTRY:
1293 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1294 break;
1295 case EXCEPTION_HANDLER_ENTRY:
1296 _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1297 break;
1298 case DEOPT_HANDLER_ENTRY:
1299 _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1300 break;
1301 case INVOKEVIRTUAL:
1302 case INVOKEINTERFACE:
1303 case INLINE_INVOKE:
1304 case INVOKESTATIC:
1305 case INVOKESPECIAL:
1306 _next_call_type = (MarkId) id;
1307 _invoke_mark_pc = pc;
1308 break;
1309 case POLL_NEAR:
1310 case POLL_FAR:
1311 case POLL_RETURN_NEAR:
1312 case POLL_RETURN_FAR:
1313 pd_relocate_poll(pc, id, CHECK);
1314 break;
1315 case CARD_TABLE_SHIFT:
1316 case CARD_TABLE_ADDRESS:
1317 case HEAP_TOP_ADDRESS:
1318 case HEAP_END_ADDRESS:
1319 case NARROW_KLASS_BASE_ADDRESS:
1320 case NARROW_OOP_BASE_ADDRESS:
1321 case CRC_TABLE_ADDRESS:
1322 case LOG_OF_HEAP_REGION_GRAIN_BYTES:
1323 case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED:
1324 break;
1325 default:
1326 JVMCI_ERROR("invalid mark id: %d", id);
1327 break;
1328 }
1329 }
1330 }