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