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