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 "runtime/sharedRuntime.hpp"
47 #include "utilities/align.hpp"
48
49 // frequently used constants
50 // Allocate them with new so they are never destroyed (otherwise, a
51 // forced exit could destroy these objects while they are still in
52 // use).
53 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL);
54 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1);
55 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue((jint)0);
56 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1);
57 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2);
58 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location());
59
60 Method* getMethodFromHotSpotMethod(oop hotspot_method) {
61 assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity");
62 return CompilerToVM::asMethod(hotspot_method);
63 }
64
65 VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) {
66 if (location.is_null()) {
67 THROW_NULL(vmSymbols::java_lang_NullPointerException());
68 }
69
70 Handle reg(THREAD, code_Location::reg(location));
71 jint offset = code_Location::offset(location);
72
73 if (reg.not_null()) {
74 // register
75 jint number = code_Register::number(reg);
76 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL);
77 if (offset % 4 == 0) {
78 return vmReg->next(offset / 4);
79 } else {
80 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset);
81 }
82 } else {
83 // stack slot
84 if (offset % 4 == 0) {
85 VMReg vmReg = VMRegImpl::stack2reg(offset / 4);
86 if (!OopMapValue::legal_vm_reg_name(vmReg)) {
87 // This restriction only applies to VMRegs that are used in OopMap but
88 // since that's the only use of VMRegs it's simplest to put this test
89 // here. This test should also be equivalent legal_vm_reg_name but JVMCI
90 // clients can use max_oop_map_stack_stack_offset to detect this problem
91 // directly. The asserts just ensure that the tests are in agreement.
92 assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg");
93 JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)",
94 offset, CompilerToVM::Data::max_oop_map_stack_offset());
95 }
96 assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg");
97 return vmReg;
98 } else {
99 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
100 }
101 }
102 }
103
104 objArrayOop CodeInstaller::sites() {
105 return (objArrayOop) JNIHandles::resolve(_sites_handle);
106 }
107
108 arrayOop CodeInstaller::code() {
109 return (arrayOop) JNIHandles::resolve(_code_handle);
110 }
111
112 arrayOop CodeInstaller::data_section() {
113 return (arrayOop) JNIHandles::resolve(_data_section_handle);
114 }
115
116 objArrayOop CodeInstaller::data_section_patches() {
117 return (objArrayOop) JNIHandles::resolve(_data_section_patches_handle);
118 }
119
120 #ifndef PRODUCT
121 objArrayOop CodeInstaller::comments() {
122 return (objArrayOop) JNIHandles::resolve(_comments_handle);
123 }
124 #endif
125
126 oop CodeInstaller::word_kind() {
127 return JNIHandles::resolve(_word_kind_handle);
128 }
129
130 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo
131 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) {
132 Handle reference_map(THREAD, DebugInfo::referenceMap(debug_info));
133 if (reference_map.is_null()) {
134 THROW_NULL(vmSymbols::java_lang_NullPointerException());
135 }
136 if (!reference_map->is_a(HotSpotReferenceMap::klass())) {
137 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name());
138 }
139 if (!_has_wide_vector && SharedRuntime::is_wide_vector(HotSpotReferenceMap::maxRegisterSize(reference_map))) {
140 if (SharedRuntime::polling_page_vectors_safepoint_handler_blob() == NULL) {
141 JVMCI_ERROR_NULL("JVMCI is producing code using vectors larger than the runtime supports");
142 }
143 _has_wide_vector = true;
144 }
145 OopMap* map = new OopMap(_total_frame_size, _parameter_count);
146 objArrayHandle objects(THREAD, HotSpotReferenceMap::objects(reference_map));
147 objArrayHandle derivedBase(THREAD, HotSpotReferenceMap::derivedBase(reference_map));
148 typeArrayHandle sizeInBytes(THREAD, HotSpotReferenceMap::sizeInBytes(reference_map));
149 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
150 THROW_NULL(vmSymbols::java_lang_NullPointerException());
151 }
152 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) {
153 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length());
154 }
155 for (int i = 0; i < objects->length(); i++) {
156 Handle location(THREAD, objects->obj_at(i));
157 Handle baseLocation(THREAD, derivedBase->obj_at(i));
158 int bytes = sizeInBytes->int_at(i);
159
160 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL);
161 if (baseLocation.not_null()) {
162 // derived oop
163 #ifdef _LP64
164 if (bytes == 8) {
165 #else
166 if (bytes == 4) {
167 #endif
168 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL);
169 map->set_derived_oop(vmReg, baseReg);
170 } else {
171 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
172 }
173 #ifdef _LP64
174 } else if (bytes == 8) {
175 // wide oop
176 map->set_oop(vmReg);
177 } else if (bytes == 4) {
178 // narrow oop
179 map->set_narrowoop(vmReg);
180 #else
181 } else if (bytes == 4) {
182 map->set_oop(vmReg);
183 #endif
184 } else {
185 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
186 }
187 }
188
189 Handle callee_save_info(THREAD, (oop) DebugInfo::calleeSaveInfo(debug_info));
190 if (callee_save_info.not_null()) {
191 objArrayHandle registers(THREAD, RegisterSaveLayout::registers(callee_save_info));
192 typeArrayHandle slots(THREAD, RegisterSaveLayout::slots(callee_save_info));
193 for (jint i = 0; i < slots->length(); i++) {
194 Handle jvmci_reg (THREAD, registers->obj_at(i));
195 jint jvmci_reg_number = code_Register::number(jvmci_reg);
196 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
197 // HotSpot stack slots are 4 bytes
198 jint jvmci_slot = slots->int_at(i);
199 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
200 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
201 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
202 #ifdef _LP64
203 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
204 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
205 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
206 #endif
207 }
208 }
209 return map;
210 }
211
212 AOTOopRecorder::AOTOopRecorder(Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) {
213 _meta_refs = new GrowableArray<jobject>();
214 }
215
216 int AOTOopRecorder::nr_meta_refs() const {
217 return _meta_refs->length();
218 }
219
220 jobject AOTOopRecorder::meta_element(int pos) const {
221 return _meta_refs->at(pos);
222 }
223
224 int AOTOopRecorder::find_index(Metadata* h) {
225 JavaThread* THREAD = JavaThread::current();
226 int oldCount = metadata_count();
227 int index = this->OopRecorder::find_index(h);
228 int newCount = metadata_count();
229
230 if (oldCount == newCount) {
231 // found a match
232 return index;
233 }
234
235 vmassert(index + 1 == newCount, "must be last");
236
237 JVMCIKlassHandle klass(THREAD);
238 oop result = NULL;
239 guarantee(h != NULL,
240 "If DebugInformationRecorder::describe_scope passes NULL oldCount == newCount must hold.");
241 if (h->is_klass()) {
242 klass = (Klass*) h;
243 result = CompilerToVM::get_jvmci_type(klass, CATCH);
244 } else if (h->is_method()) {
245 Method* method = (Method*) h;
246 methodHandle mh(method);
247 result = CompilerToVM::get_jvmci_method(method, CATCH);
248 }
249 jobject ref = JNIHandles::make_local(THREAD, result);
250 record_meta_ref(ref, index);
251
252 return index;
253 }
254
255 int AOTOopRecorder::find_index(jobject h) {
256 if (h == NULL) {
257 return 0;
258 }
259 oop javaMirror = JNIHandles::resolve(h);
260 Klass* klass = java_lang_Class::as_Klass(javaMirror);
261 return find_index(klass);
262 }
263
264 void AOTOopRecorder::record_meta_ref(jobject o, int index) {
265 assert(index > 0, "must be 1..n");
266 index -= 1; // reduce by one to convert to array index
267
268 assert(index == _meta_refs->length(), "must be last");
269 _meta_refs->append(o);
270 }
271
272 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
273 /*
274 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
275 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
276 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
277 * base class (Metadata* or MetaspaceObj*).
278 */
279 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
280 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
281 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
282 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
283 int index = _oop_recorder->find_index(klass);
284 section->relocate(dest, metadata_Relocation::spec(index));
285 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
286 return klass;
287 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
288 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
289 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
290 int index = _oop_recorder->find_index(method);
291 section->relocate(dest, metadata_Relocation::spec(index));
292 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
293 return method;
294 } else {
295 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
296 }
297 }
298
299 #ifdef _LP64
300 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
301 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
302 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
303
304 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
305 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
306 }
307
308 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
309 int index = _oop_recorder->find_index(klass);
310 section->relocate(dest, metadata_Relocation::spec(index));
311 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
312 return Klass::encode_klass(klass);
313 }
314 #endif
315
316 Location::Type CodeInstaller::get_oop_type(Thread* thread, Handle value) {
317 Handle valueKind(thread, Value::valueKind(value));
318 Handle platformKind(thread, ValueKind::platformKind(valueKind));
319
320 if (platformKind == word_kind()) {
321 return Location::oop;
322 } else {
323 return Location::narrowoop;
324 }
325 }
326
327 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
328 second = NULL;
329 if (value.is_null()) {
330 THROW_NULL(vmSymbols::java_lang_NullPointerException());
331 } else if (value == Value::ILLEGAL()) {
332 if (type != T_ILLEGAL) {
333 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
334 }
335 return _illegal_value;
336 } else if (value->is_a(RegisterValue::klass())) {
337 Handle reg(THREAD, RegisterValue::reg(value));
338 jint number = code_Register::number(reg);
339 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL);
340 if (is_general_purpose_reg(hotspotRegister)) {
341 Location::Type locationType;
342 if (type == T_OBJECT) {
343 locationType = get_oop_type(THREAD, value);
344 } else if (type == T_LONG) {
345 locationType = Location::lng;
346 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
347 locationType = Location::int_in_long;
348 } else {
349 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
350 }
351 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
352 if (type == T_LONG) {
353 second = value;
354 }
355 return value;
356 } else {
357 Location::Type locationType;
358 if (type == T_FLOAT) {
359 // this seems weird, but the same value is used in c1_LinearScan
360 locationType = Location::normal;
361 } else if (type == T_DOUBLE) {
362 locationType = Location::dbl;
363 } else {
364 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
365 }
366 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
367 if (type == T_DOUBLE) {
368 second = value;
369 }
370 return value;
371 }
372 } else if (value->is_a(StackSlot::klass())) {
373 jint offset = StackSlot::offset(value);
374 if (StackSlot::addFrameSize(value)) {
375 offset += _total_frame_size;
376 }
377
378 Location::Type locationType;
379 if (type == T_OBJECT) {
380 locationType = get_oop_type(THREAD, value);
381 } else if (type == T_LONG) {
382 locationType = Location::lng;
383 } else if (type == T_DOUBLE) {
384 locationType = Location::dbl;
385 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
386 locationType = Location::normal;
387 } else {
388 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
389 }
390 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
391 if (type == T_DOUBLE || type == T_LONG) {
392 second = value;
393 }
394 return value;
395 } else if (value->is_a(JavaConstant::klass())) {
396 if (value->is_a(PrimitiveConstant::klass())) {
397 if (value->is_a(RawConstant::klass())) {
398 jlong prim = PrimitiveConstant::primitive(value);
399 return new ConstantLongValue(prim);
400 } else {
401 Handle primitive_constant_kind(THREAD, PrimitiveConstant::kind(value));
402 BasicType constantType = JVMCIRuntime::kindToBasicType(primitive_constant_kind, CHECK_NULL);
403 if (type != constantType) {
404 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
405 }
406 if (type == T_INT || type == T_FLOAT) {
407 jint prim = (jint)PrimitiveConstant::primitive(value);
408 switch (prim) {
409 case -1: return _int_m1_scope_value;
410 case 0: return _int_0_scope_value;
411 case 1: return _int_1_scope_value;
412 case 2: return _int_2_scope_value;
413 default: return new ConstantIntValue(prim);
414 }
415 } else if (type == T_LONG || type == T_DOUBLE) {
416 jlong prim = PrimitiveConstant::primitive(value);
417 second = _int_1_scope_value;
418 return new ConstantLongValue(prim);
419 } else {
420 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
421 }
422 }
423 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) {
424 if (type == T_OBJECT) {
425 return _oop_null_scope_value;
426 } else {
427 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
428 }
429 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) {
430 if (type == T_OBJECT) {
431 oop obj = HotSpotObjectConstantImpl::object(value);
432 if (obj == NULL) {
433 JVMCI_ERROR_NULL("null value must be in NullConstant");
434 }
435 return new ConstantOopWriteValue(JNIHandles::make_local(obj));
436 } else {
437 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
438 }
439 }
440 } else if (value->is_a(VirtualObject::klass())) {
441 if (type == T_OBJECT) {
442 int id = VirtualObject::id(value);
443 if (0 <= id && id < objects->length()) {
444 ScopeValue* object = objects->at(id);
445 if (object != NULL) {
446 return object;
447 }
448 }
449 JVMCI_ERROR_NULL("unknown virtual object id %d", id);
450 } else {
451 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
452 }
453 }
454
455 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name())
456 }
457
458 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
459 // Might want a HandleMark here.
460 Handle type(THREAD, VirtualObject::type(value));
461 int id = VirtualObject::id(value);
462 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
463 Klass* klass = java_lang_Class::as_Klass(javaMirror);
464 bool isLongArray = klass == Universe::longArrayKlassObj();
465
466 objArrayHandle values(THREAD, VirtualObject::values(value));
467 objArrayHandle slotKinds(THREAD, VirtualObject::slotKinds(value));
468 for (jint i = 0; i < values->length(); i++) {
469 HandleMark hm(THREAD);
470 ScopeValue* cur_second = NULL;
471 Handle object(THREAD, values->obj_at(i));
472 Handle slot_kind (THREAD, slotKinds->obj_at(i));
473 BasicType type = JVMCIRuntime::kindToBasicType(slot_kind, CHECK);
474 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK);
475
476 if (isLongArray && cur_second == NULL) {
477 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
478 // add an int 0 constant
479 cur_second = _int_0_scope_value;
480 }
481
482 if (cur_second != NULL) {
483 sv->field_values()->append(cur_second);
484 }
485 assert(value != NULL, "missing value");
486 sv->field_values()->append(value);
487 }
488 }
489
490 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
491 if (value.is_null()) {
492 THROW_NULL(vmSymbols::java_lang_NullPointerException());
493 }
494 if (!value->is_a(StackLockValue::klass())) {
495 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name());
496 }
497
498 ScopeValue* second = NULL;
499 Handle stack_lock_owner(THREAD, StackLockValue::owner(value));
500 ScopeValue* owner_value = get_scope_value(stack_lock_owner, T_OBJECT, objects, second, CHECK_NULL);
501 assert(second == NULL, "monitor cannot occupy two stack slots");
502
503 Handle stack_lock_slot(THREAD, StackLockValue::slot(value));
504 ScopeValue* lock_data_value = get_scope_value(stack_lock_slot, T_LONG, objects, second, CHECK_NULL);
505 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
506 assert(lock_data_value->is_location(), "invalid monitor location");
507 Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
508
509 bool eliminated = false;
510 if (StackLockValue::eliminated(value)) {
511 eliminated = true;
512 }
513
514 return new MonitorValue(owner_value, lock_data_loc, eliminated);
515 }
516
517 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) {
518 JavaThread* thread = JavaThread::current();
519 assert(THREAD == thread, "");
520 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
521 _oop_recorder = recorder;
522 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
523 objArrayHandle assumptions(THREAD, HotSpotCompiledCode::assumptions(compiled_code));
524 if (!assumptions.is_null()) {
525 int length = assumptions->length();
526 for (int i = 0; i < length; ++i) {
527 Handle assumption(THREAD, assumptions->obj_at(i));
528 if (!assumption.is_null()) {
529 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) {
530 assumption_NoFinalizableSubclass(THREAD, assumption);
531 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) {
532 assumption_ConcreteSubtype(THREAD, assumption);
533 } else if (assumption->klass() == Assumptions_LeafType::klass()) {
534 assumption_LeafType(THREAD, assumption);
535 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) {
536 assumption_ConcreteMethod(THREAD, assumption);
537 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) {
538 assumption_CallSiteTargetValue(THREAD, assumption);
539 } else {
540 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name());
541 }
542 }
543 }
544 }
545 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
546 objArrayHandle methods(THREAD, HotSpotCompiledCode::methods(compiled_code));
547 if (!methods.is_null()) {
548 int length = methods->length();
549 for (int i = 0; i < length; ++i) {
550 Handle method_handle(THREAD, methods->obj_at(i));
551 methodHandle method = getMethodFromHotSpotMethod(method_handle());
552 _dependencies->assert_evol_method(method());
553 }
554 }
555 }
556 }
557
558 RelocBuffer::~RelocBuffer() {
559 if (_buffer != NULL) {
560 FREE_C_HEAP_ARRAY(char, _buffer);
561 }
562 }
563
564 address RelocBuffer::begin() const {
565 if (_buffer != NULL) {
566 return (address) _buffer;
567 }
568 return (address) _static_buffer;
569 }
570
571 void RelocBuffer::set_size(size_t bytes) {
572 assert(bytes <= _size, "can't grow in size!");
573 _size = bytes;
574 }
575
576 void RelocBuffer::ensure_size(size_t bytes) {
577 assert(_buffer == NULL, "can only be used once");
578 assert(_size == 0, "can only be used once");
579 if (bytes >= RelocBuffer::stack_size) {
580 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal);
581 }
582 _size = bytes;
583 }
584
585 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) {
586 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
587 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
588 AOTOopRecorder* recorder = new AOTOopRecorder(&_arena, true);
589 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
590
591 metadata.set_oop_recorder(recorder);
592
593 // Get instructions and constants CodeSections early because we need it.
594 _instructions = buffer.insts();
595 _constants = buffer.consts();
596 #if INCLUDE_AOT
597 buffer.set_immutable_PIC(_immutable_pic_compilation);
598 #endif
599
600 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
601 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, false, CHECK_OK);
602 if (result != JVMCIEnv::ok) {
603 return result;
604 }
605
606 _debug_recorder->pcs_size(); // create the sentinel record
607
608 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
609
610 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
611 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
612 metadata.set_exception_table(&_exception_handler_table);
613
614 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
615
616 reloc_buffer->ensure_size(buffer.total_relocation_size());
617 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
618 reloc_buffer->set_size(size);
619 return JVMCIEnv::ok;
620 }
621
622 // constructor used to create a method
623 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) {
624 CodeBuffer buffer("JVMCI Compiler CodeBuffer");
625 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
626 OopRecorder* recorder = new OopRecorder(&_arena, true);
627 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
628
629 // Get instructions and constants CodeSections early because we need it.
630 _instructions = buffer.insts();
631 _constants = buffer.consts();
632 #if INCLUDE_AOT
633 buffer.set_immutable_PIC(_immutable_pic_compilation);
634 #endif
635
636 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
637 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, true, CHECK_OK);
638 if (result != JVMCIEnv::ok) {
639 return result;
640 }
641
642 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
643
644 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
645 oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
646 if (stubName == NULL) {
647 JVMCI_ERROR_OK("stub should have a name");
648 }
649 char* name = strdup(java_lang_String::as_utf8_string(stubName));
650 cb = RuntimeStub::new_runtime_stub(name,
651 &buffer,
652 CodeOffsets::frame_never_safe,
653 stack_slots,
654 _debug_recorder->_oopmaps,
655 false);
656 result = JVMCIEnv::ok;
657 } else {
658 nmethod* nm = NULL;
659 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code));
660 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code);
661 jint id = HotSpotCompiledNmethod::id(compiled_code);
662 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE;
663 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code);
664 if (id == -1) {
665 // Make sure a valid compile_id is associated with every compile
666 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
667 }
668 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
669 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table,
670 compiler, _debug_recorder, _dependencies, env, id,
671 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log);
672 cb = nm->as_codeblob_or_null();
673 if (nm != NULL && env == NULL) {
674 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
675 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
676 if (!printnmethods && (PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers)) {
677 nm->print_nmethod(printnmethods);
678 }
679 DirectivesStack::release(directive);
680 }
681 }
682
683 if (cb != NULL) {
684 // Make sure the pre-calculated constants section size was correct.
685 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
686 }
687 return result;
688 }
689
690 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) {
691 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
692 Handle hotspotJavaMethod(THREAD, HotSpotCompiledNmethod::method(compiled_code));
693 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod());
694 _parameter_count = method->size_of_parameters();
695 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
696 } else {
697 // Must be a HotSpotCompiledRuntimeStub.
698 // Only used in OopMap constructor for non-product builds
699 _parameter_count = 0;
700 }
701 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code));
702
703 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code));
704 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code);
705 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code);
706
707 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code);
708 if (deoptRescueSlot == NULL) {
709 _orig_pc_offset = -1;
710 } else {
711 _orig_pc_offset = StackSlot::offset(deoptRescueSlot);
712 if (StackSlot::addFrameSize(deoptRescueSlot)) {
713 _orig_pc_offset += _total_frame_size;
714 }
715 if (_orig_pc_offset < 0) {
716 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
717 }
718 }
719
720 // Pre-calculate the constants section size. This is required for PC-relative addressing.
721 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code));
722 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) {
723 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code));
724 }
725 _constants_size = data_section()->length();
726
727 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code));
728
729 #ifndef PRODUCT
730 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code));
731 #endif
732
733 _next_call_type = INVOKE_INVALID;
734
735 _has_wide_vector = false;
736
737 oop arch = TargetDescription::arch(target);
738 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch));
739 }
740
741 int CodeInstaller::estimate_stubs_size(TRAPS) {
742 // Estimate the number of static and aot call stubs that might be emitted.
743 int static_call_stubs = 0;
744 int aot_call_stubs = 0;
745 int trampoline_stubs = 0;
746 objArrayOop sites = this->sites();
747 for (int i = 0; i < sites->length(); i++) {
748 oop site = sites->obj_at(i);
749 if (site != NULL) {
750 if (site->is_a(site_Mark::klass())) {
751 oop id_obj = site_Mark::id(site);
752 if (id_obj != NULL) {
753 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) {
754 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name());
755 }
756 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
757 switch (id) {
758 case INVOKEINTERFACE:
759 case INVOKEVIRTUAL:
760 trampoline_stubs++;
761 break;
762 case INVOKESTATIC:
763 case INVOKESPECIAL:
764 static_call_stubs++;
765 trampoline_stubs++;
766 break;
767 default:
768 break;
769 }
770 }
771 }
772 if (UseAOT && site->is_a(site_Call::klass())) {
773 oop target = site_Call::target(site);
774 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
775 if (!target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
776 // Add far aot trampolines.
777 aot_call_stubs++;
778 }
779 }
780 }
781 }
782 int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size();
783 size += trampoline_stubs * CompiledStaticCall::to_trampoline_stub_size();
784 #if INCLUDE_AOT
785 size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size();
786 #endif
787 return size;
788 }
789
790 // perform data and call relocation on the CodeBuffer
791 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, TRAPS) {
792 HandleMark hm;
793 objArrayHandle sites(THREAD, this->sites());
794 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo));
795
796 // Allocate enough space in the stub section for the static call
797 // stubs. Stubs have extra relocs but they are managed by the stub
798 // section itself so they don't need to be accounted for in the
799 // locs_buffer above.
800 int stubs_size = estimate_stubs_size(CHECK_OK);
801 int total_size = align_up(_code_size, buffer.insts()->alignment()) + align_up(_constants_size, buffer.consts()->alignment()) + align_up(stubs_size, buffer.stubs()->alignment());
802
803 if (check_size && total_size > JVMCINMethodSizeLimit) {
804 return JVMCIEnv::code_too_large;
805 }
806
807 buffer.initialize(total_size, locs_buffer_size);
808 if (buffer.blob() == NULL) {
809 return JVMCIEnv::cache_full;
810 }
811 buffer.initialize_stubs_size(stubs_size);
812 buffer.initialize_consts_size(_constants_size);
813
814 _debug_recorder = new DebugInformationRecorder(_oop_recorder);
815 _debug_recorder->set_oopmaps(new OopMapSet());
816
817 buffer.initialize_oop_recorder(_oop_recorder);
818
819 // copy the constant data into the newly created CodeBuffer
820 address end_data = _constants->start() + _constants_size;
821 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size);
822 _constants->set_end(end_data);
823
824 // copy the code into the newly created CodeBuffer
825 address end_pc = _instructions->start() + _code_size;
826 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
827 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size);
828 _instructions->set_end(end_pc);
829
830 for (int i = 0; i < data_section_patches()->length(); i++) {
831 HandleMark hm(THREAD);
832 Handle patch(THREAD, data_section_patches()->obj_at(i));
833 if (patch.is_null()) {
834 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
835 }
836 Handle reference(THREAD, site_DataPatch::reference(patch));
837 if (reference.is_null()) {
838 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
839 }
840 if (!reference->is_a(site_ConstantReference::klass())) {
841 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
842 }
843 Handle constant(THREAD, site_ConstantReference::constant(reference));
844 if (constant.is_null()) {
845 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
846 }
847 address dest = _constants->start() + site_Site::pcOffset(patch);
848 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
849 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
850 #ifdef _LP64
851 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK);
852 #else
853 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
854 #endif
855 } else {
856 *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK);
857 }
858 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
859 Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant));
860 jobject value = JNIHandles::make_local(obj());
861 int oop_index = _oop_recorder->find_index(value);
862
863 if (HotSpotObjectConstantImpl::compressed(constant)) {
864 #ifdef _LP64
865 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
866 #else
867 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
868 #endif
869 } else {
870 _constants->relocate(dest, oop_Relocation::spec(oop_index));
871 }
872 } else {
873 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
874 }
875 }
876 jint last_pc_offset = -1;
877 for (int i = 0; i < sites->length(); i++) {
878 HandleMark hm(THREAD);
879 Handle site(THREAD, sites->obj_at(i));
880 if (site.is_null()) {
881 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
882 }
883
884 jint pc_offset = site_Site::pcOffset(site);
885
886 if (site->is_a(site_Call::klass())) {
887 TRACE_jvmci_4("call at %i", pc_offset);
888 site_Call(buffer, pc_offset, site, CHECK_OK);
889 } else if (site->is_a(site_Infopoint::klass())) {
890 // three reasons for infopoints denote actual safepoints
891 oop reason = site_Infopoint::reason(site);
892 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) {
893 TRACE_jvmci_4("safepoint at %i", pc_offset);
894 site_Safepoint(buffer, pc_offset, site, CHECK_OK);
895 if (_orig_pc_offset < 0) {
896 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
897 }
898 } else {
899 TRACE_jvmci_4("infopoint at %i", pc_offset);
900 site_Infopoint(buffer, pc_offset, site, CHECK_OK);
901 }
902 } else if (site->is_a(site_DataPatch::klass())) {
903 TRACE_jvmci_4("datapatch at %i", pc_offset);
904 site_DataPatch(buffer, pc_offset, site, CHECK_OK);
905 } else if (site->is_a(site_Mark::klass())) {
906 TRACE_jvmci_4("mark at %i", pc_offset);
907 site_Mark(buffer, pc_offset, site, CHECK_OK);
908 } else if (site->is_a(site_ExceptionHandler::klass())) {
909 TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
910 site_ExceptionHandler(pc_offset, site);
911 } else {
912 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name());
913 }
914 last_pc_offset = pc_offset;
915
916 JavaThread* thread = JavaThread::current();
917 if (SafepointMechanism::poll(thread)) {
918 // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
919 ThreadToNativeFromVM ttnfv(thread);
920 }
921 }
922
923 #ifndef PRODUCT
924 if (comments() != NULL) {
925 for (int i = 0; i < comments()->length(); i++) {
926 oop comment = comments()->obj_at(i);
927 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce");
928 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment);
929 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment));
930 buffer.block_comment(offset, text);
931 }
932 }
933 #endif
934 return JVMCIEnv::ok;
935 }
936
937 void CodeInstaller::assumption_NoFinalizableSubclass(Thread* thread, Handle assumption) {
938 Handle receiverType_handle (thread, Assumptions_NoFinalizableSubclass::receiverType(assumption()));
939 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle));
940 _dependencies->assert_has_no_finalizable_subclasses(receiverType);
941 }
942
943 void CodeInstaller::assumption_ConcreteSubtype(Thread* thread, Handle assumption) {
944 Handle context_handle (thread, Assumptions_ConcreteSubtype::context(assumption()));
945 Handle subtype_handle (thread, Assumptions_ConcreteSubtype::subtype(assumption()));
946 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
947 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle));
948
949 assert(context->is_abstract(), "");
950 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
951 }
952
953 void CodeInstaller::assumption_LeafType(Thread* thread, Handle assumption) {
954 Handle context_handle (thread, Assumptions_LeafType::context(assumption()));
955 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
956
957 _dependencies->assert_leaf_type(context);
958 }
959
960 void CodeInstaller::assumption_ConcreteMethod(Thread* thread, Handle assumption) {
961 Handle impl_handle (thread, Assumptions_ConcreteMethod::impl(assumption()));
962 Handle context_handle (thread, Assumptions_ConcreteMethod::context(assumption()));
963
964 methodHandle impl = getMethodFromHotSpotMethod(impl_handle());
965 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
966
967 _dependencies->assert_unique_concrete_method(context, impl());
968 }
969
970 void CodeInstaller::assumption_CallSiteTargetValue(Thread* thread, Handle assumption) {
971 Handle callSite(thread, HotSpotObjectConstantImpl::object(Assumptions_CallSiteTargetValue::callSite(assumption())));
972 Handle methodHandle(thread, HotSpotObjectConstantImpl::object(Assumptions_CallSiteTargetValue::methodHandle(assumption())));
973
974 _dependencies->assert_call_site_target_value(callSite(), methodHandle());
975 }
976
977 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) {
978 jint handler_offset = site_ExceptionHandler::handlerPos(exc);
979
980 // Subtable header
981 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
982
983 // Subtable entry
984 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
985 }
986
987 // If deoptimization happens, the interpreter should reexecute these bytecodes.
988 // This function mainly helps the compilers to set up the reexecute bit.
989 static bool bytecode_should_reexecute(Bytecodes::Code code) {
990 switch (code) {
991 case Bytecodes::_invokedynamic:
992 case Bytecodes::_invokevirtual:
993 case Bytecodes::_invokeinterface:
994 case Bytecodes::_invokespecial:
995 case Bytecodes::_invokestatic:
996 return false;
997 default:
998 return true;
999 }
1000 return true;
1001 }
1002
1003 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) {
1004 objArrayHandle virtualObjects(THREAD, DebugInfo::virtualObjectMapping(debug_info));
1005 if (virtualObjects.is_null()) {
1006 return NULL;
1007 }
1008 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL);
1009 // Create the unique ObjectValues
1010 for (int i = 0; i < virtualObjects->length(); i++) {
1011 HandleMark hm(THREAD);
1012 Handle value(THREAD, virtualObjects->obj_at(i));
1013 int id = VirtualObject::id(value);
1014 Handle type(THREAD, VirtualObject::type(value));
1015 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
1016 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror)));
1017 if (id < 0 || id >= objects->length()) {
1018 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
1019 }
1020 if (objects->at(id) != NULL) {
1021 JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
1022 }
1023 objects->at_put(id, sv);
1024 }
1025 // All the values which could be referenced by the VirtualObjects
1026 // exist, so now describe all the VirtualObjects themselves.
1027 for (int i = 0; i < virtualObjects->length(); i++) {
1028 HandleMark hm(THREAD);
1029 Handle value(THREAD, virtualObjects->obj_at(i));
1030 int id = VirtualObject::id(value);
1031 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL);
1032 }
1033 _debug_recorder->dump_object_pool(objects);
1034 return objects;
1035 }
1036
1037 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, bool return_oop, TRAPS) {
1038 Handle position(THREAD, DebugInfo::bytecodePosition(debug_info));
1039 if (position.is_null()) {
1040 // Stubs do not record scope info, just oop maps
1041 return;
1042 }
1043
1044 GrowableArray<ScopeValue*>* objectMapping;
1045 if (scope_mode == CodeInstaller::FullFrame) {
1046 objectMapping = record_virtual_objects(debug_info, CHECK);
1047 } else {
1048 objectMapping = NULL;
1049 }
1050 record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, CHECK);
1051 }
1052
1053 int CodeInstaller::map_jvmci_bci(int bci) {
1054 if (bci < 0) {
1055 if (bci == BytecodeFrame::BEFORE_BCI()) {
1056 return BeforeBci;
1057 } else if (bci == BytecodeFrame::AFTER_BCI()) {
1058 return AfterBci;
1059 } else if (bci == BytecodeFrame::UNWIND_BCI()) {
1060 return UnwindBci;
1061 } else if (bci == BytecodeFrame::AFTER_EXCEPTION_BCI()) {
1062 return AfterExceptionBci;
1063 } else if (bci == BytecodeFrame::UNKNOWN_BCI()) {
1064 return UnknownBci;
1065 } else if (bci == BytecodeFrame::INVALID_FRAMESTATE_BCI()) {
1066 return InvalidFrameStateBci;
1067 }
1068 ShouldNotReachHere();
1069 }
1070 return bci;
1071 }
1072
1073 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, TRAPS) {
1074 Handle frame;
1075 if (scope_mode == CodeInstaller::FullFrame) {
1076 if (!position->is_a(BytecodeFrame::klass())) {
1077 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
1078 }
1079 frame = position;
1080 }
1081 Handle caller_frame (THREAD, BytecodePosition::caller(position));
1082 if (caller_frame.not_null()) {
1083 record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, CHECK);
1084 }
1085
1086 Handle hotspot_method (THREAD, BytecodePosition::method(position));
1087 Method* method = getMethodFromHotSpotMethod(hotspot_method());
1088 jint bci = map_jvmci_bci(BytecodePosition::bci(position));
1089
1090 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
1091
1092 bool reexecute = false;
1093 if (frame.not_null()) {
1094 if (bci < 0) {
1095 reexecute = false;
1096 } else {
1097 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
1098 reexecute = bytecode_should_reexecute(code);
1099 if (frame.not_null()) {
1100 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE);
1101 }
1102 }
1103 }
1104
1105 DebugToken* locals_token = NULL;
1106 DebugToken* expressions_token = NULL;
1107 DebugToken* monitors_token = NULL;
1108 bool throw_exception = false;
1109
1110 if (frame.not_null()) {
1111 jint local_count = BytecodeFrame::numLocals(frame);
1112 jint expression_count = BytecodeFrame::numStack(frame);
1113 jint monitor_count = BytecodeFrame::numLocks(frame);
1114 objArrayHandle values(THREAD, BytecodeFrame::values(frame));
1115 objArrayHandle slotKinds(THREAD, BytecodeFrame::slotKinds(frame));
1116
1117 if (values.is_null() || slotKinds.is_null()) {
1118 THROW(vmSymbols::java_lang_NullPointerException());
1119 }
1120 if (local_count + expression_count + monitor_count != values->length()) {
1121 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count);
1122 }
1123 if (local_count + expression_count != slotKinds->length()) {
1124 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count);
1125 }
1126
1127 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
1128 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
1129 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
1130
1131 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length());
1132 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
1133
1134 for (jint i = 0; i < values->length(); i++) {
1135 HandleMark hm(THREAD);
1136 ScopeValue* second = NULL;
1137 Handle value(THREAD, values->obj_at(i));
1138 if (i < local_count) {
1139 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1140 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1141 if (second != NULL) {
1142 locals->append(second);
1143 }
1144 locals->append(first);
1145 } else if (i < local_count + expression_count) {
1146 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1147 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1148 if (second != NULL) {
1149 expressions->append(second);
1150 }
1151 expressions->append(first);
1152 } else {
1153 MonitorValue *monitor = get_monitor_value(value, objects, CHECK);
1154 monitors->append(monitor);
1155 }
1156 if (second != NULL) {
1157 i++;
1158 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) {
1159 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
1160 }
1161 }
1162 }
1163
1164 locals_token = _debug_recorder->create_scope_values(locals);
1165 expressions_token = _debug_recorder->create_scope_values(expressions);
1166 monitors_token = _debug_recorder->create_monitor_values(monitors);
1167
1168 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE;
1169 }
1170
1171 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop, false,
1172 locals_token, expressions_token, monitors_token);
1173 }
1174
1175 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1176 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1177 if (debug_info.is_null()) {
1178 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1179 }
1180
1181 // address instruction = _instructions->start() + pc_offset;
1182 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1183 OopMap *map = create_oop_map(debug_info, CHECK);
1184 _debug_recorder->add_safepoint(pc_offset, map);
1185 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1186 _debug_recorder->end_safepoint(pc_offset);
1187 }
1188
1189 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1190 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1191 if (debug_info.is_null()) {
1192 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1193 }
1194
1195 // We'd like to check that pc_offset is greater than the
1196 // last pc recorded with _debug_recorder (raising an exception if not)
1197 // but DebugInformationRecorder doesn't have sufficient public API.
1198
1199 _debug_recorder->add_non_safepoint(pc_offset);
1200 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK);
1201 _debug_recorder->end_non_safepoint(pc_offset);
1202 }
1203
1204 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1205 Handle target(THREAD, site_Call::target(site));
1206 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
1207
1208 Handle hotspot_method; // JavaMethod
1209 Handle foreign_call;
1210
1211 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
1212 foreign_call = target;
1213 } else {
1214 hotspot_method = target;
1215 }
1216
1217 Handle debug_info (THREAD, site_Call::debugInfo(site));
1218
1219 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type");
1220
1221 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1222 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK);
1223
1224 if (debug_info.not_null()) {
1225 OopMap *map = create_oop_map(debug_info, CHECK);
1226 _debug_recorder->add_safepoint(next_pc_offset, map);
1227
1228 bool return_oop = hotspot_method.not_null() && getMethodFromHotSpotMethod(hotspot_method())->may_return_oop();
1229
1230 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, CHECK);
1231 }
1232
1233 if (foreign_call.not_null()) {
1234 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call);
1235 if (_immutable_pic_compilation) {
1236 // Use fake short distance during PIC compilation.
1237 foreign_call_destination = (jlong)(_instructions->start() + pc_offset);
1238 }
1239 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK);
1240 } else { // method != NULL
1241 if (debug_info.is_null()) {
1242 JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1243 }
1244
1245 TRACE_jvmci_3("method call");
1246 CodeInstaller::pd_relocate_JavaMethod(buffer, hotspot_method, pc_offset, CHECK);
1247 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1248 // Need a static call stub for transitions from compiled to interpreted.
1249 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1250 }
1251 #if INCLUDE_AOT
1252 // Trampoline to far aot code.
1253 CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset);
1254 #endif
1255 }
1256
1257 _next_call_type = INVOKE_INVALID;
1258
1259 if (debug_info.not_null()) {
1260 _debug_recorder->end_safepoint(next_pc_offset);
1261 }
1262 }
1263
1264 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1265 Handle reference(THREAD, site_DataPatch::reference(site));
1266 if (reference.is_null()) {
1267 THROW(vmSymbols::java_lang_NullPointerException());
1268 } else if (reference->is_a(site_ConstantReference::klass())) {
1269 Handle constant(THREAD, site_ConstantReference::constant(reference));
1270 if (constant.is_null()) {
1271 THROW(vmSymbols::java_lang_NullPointerException());
1272 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
1273 if (!_immutable_pic_compilation) {
1274 // Do not patch during PIC compilation.
1275 pd_patch_OopConstant(pc_offset, constant, CHECK);
1276 }
1277 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
1278 if (!_immutable_pic_compilation) {
1279 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK);
1280 }
1281 } else if (constant->is_a(HotSpotSentinelConstant::klass())) {
1282 if (!_immutable_pic_compilation) {
1283 JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", constant->klass()->signature_name());
1284 }
1285 } else {
1286 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name());
1287 }
1288 } else if (reference->is_a(site_DataSectionReference::klass())) {
1289 int data_offset = site_DataSectionReference::offset(reference);
1290 if (0 <= data_offset && data_offset < _constants_size) {
1291 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK);
1292 } else {
1293 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1294 }
1295 } else {
1296 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name());
1297 }
1298 }
1299
1300 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1301 Handle id_obj (THREAD, site_Mark::id(site));
1302
1303 if (id_obj.not_null()) {
1304 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) {
1305 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name());
1306 }
1307 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
1308
1309 address pc = _instructions->start() + pc_offset;
1310
1311 switch (id) {
1312 case UNVERIFIED_ENTRY:
1313 _offsets.set_value(CodeOffsets::Entry, pc_offset);
1314 break;
1315 case VERIFIED_ENTRY:
1316 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1317 _offsets.set_value(CodeOffsets::Verified_Value_Entry, pc_offset);
1318 break;
1319 case OSR_ENTRY:
1320 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1321 break;
1322 case EXCEPTION_HANDLER_ENTRY:
1323 _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1324 break;
1325 case DEOPT_HANDLER_ENTRY:
1326 _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1327 break;
1328 case INVOKEVIRTUAL:
1329 case INVOKEINTERFACE:
1330 case INLINE_INVOKE:
1331 case INVOKESTATIC:
1332 case INVOKESPECIAL:
1333 _next_call_type = (MarkId) id;
1334 _invoke_mark_pc = pc;
1335 break;
1336 case POLL_NEAR:
1337 case POLL_FAR:
1338 case POLL_RETURN_NEAR:
1339 case POLL_RETURN_FAR:
1340 pd_relocate_poll(pc, id, CHECK);
1341 break;
1342 case CARD_TABLE_SHIFT:
1343 case CARD_TABLE_ADDRESS:
1344 case HEAP_TOP_ADDRESS:
1345 case HEAP_END_ADDRESS:
1346 case NARROW_KLASS_BASE_ADDRESS:
1347 case NARROW_OOP_BASE_ADDRESS:
1348 case CRC_TABLE_ADDRESS:
1349 case LOG_OF_HEAP_REGION_GRAIN_BYTES:
1350 case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED:
1351 break;
1352 default:
1353 JVMCI_ERROR("invalid mark id: %d", id);
1354 break;
1355 }
1356 }
1357 }