1 /*
2 * Copyright (c) 2011, 2017, 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 "oops/oop.inline.hpp"
38 #include "oops/objArrayOop.inline.hpp"
39 #include "runtime/javaCalls.hpp"
40 #include "runtime/safepointMechanism.inline.hpp"
41 #include "utilities/align.hpp"
42
43 // frequently used constants
44 // Allocate them with new so they are never destroyed (otherwise, a
45 // forced exit could destroy these objects while they are still in
46 // use).
47 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL);
48 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1);
49 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue((jint)0);
50 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1);
51 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2);
52 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location());
53
54 Method* getMethodFromHotSpotMethod(oop hotspot_method) {
55 assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity");
56 return CompilerToVM::asMethod(hotspot_method);
57 }
58
59 VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) {
60 if (location.is_null()) {
61 THROW_NULL(vmSymbols::java_lang_NullPointerException());
62 }
63
64 Handle reg(THREAD, code_Location::reg(location));
65 jint offset = code_Location::offset(location);
66
67 if (reg.not_null()) {
68 // register
69 jint number = code_Register::number(reg);
70 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL);
71 if (offset % 4 == 0) {
72 return vmReg->next(offset / 4);
73 } else {
74 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset);
75 }
76 } else {
77 // stack slot
78 if (offset % 4 == 0) {
79 VMReg vmReg = VMRegImpl::stack2reg(offset / 4);
80 if (!OopMapValue::legal_vm_reg_name(vmReg)) {
81 // This restriction only applies to VMRegs that are used in OopMap but
82 // since that's the only use of VMRegs it's simplest to put this test
83 // here. This test should also be equivalent legal_vm_reg_name but JVMCI
84 // clients can use max_oop_map_stack_stack_offset to detect this problem
85 // directly. The asserts just ensure that the tests are in agreement.
86 assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg");
87 JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)",
88 offset, CompilerToVM::Data::max_oop_map_stack_offset());
89 }
90 assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg");
91 return vmReg;
92 } else {
93 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
94 }
95 }
96 }
97
98 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo
99 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) {
100 Handle reference_map(THREAD, DebugInfo::referenceMap(debug_info));
101 if (reference_map.is_null()) {
102 THROW_NULL(vmSymbols::java_lang_NullPointerException());
103 }
104 if (!reference_map->is_a(HotSpotReferenceMap::klass())) {
105 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name());
106 }
107 if (HotSpotReferenceMap::maxRegisterSize(reference_map) > 16) {
108 _has_wide_vector = true;
109 }
110 OopMap* map = new OopMap(_total_frame_size, _parameter_count);
111 objArrayHandle objects(THREAD, HotSpotReferenceMap::objects(reference_map));
112 objArrayHandle derivedBase(THREAD, HotSpotReferenceMap::derivedBase(reference_map));
113 typeArrayHandle sizeInBytes(THREAD, HotSpotReferenceMap::sizeInBytes(reference_map));
114 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
115 THROW_NULL(vmSymbols::java_lang_NullPointerException());
116 }
117 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) {
118 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length());
119 }
120 for (int i = 0; i < objects->length(); i++) {
121 Handle location(THREAD, objects->obj_at(i));
122 Handle baseLocation(THREAD, derivedBase->obj_at(i));
123 int bytes = sizeInBytes->int_at(i);
124
125 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL);
126 if (baseLocation.not_null()) {
127 // derived oop
128 #ifdef _LP64
129 if (bytes == 8) {
130 #else
131 if (bytes == 4) {
132 #endif
133 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL);
134 map->set_derived_oop(vmReg, baseReg);
135 } else {
136 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
137 }
138 #ifdef _LP64
139 } else if (bytes == 8) {
140 // wide oop
141 map->set_oop(vmReg);
142 } else if (bytes == 4) {
143 // narrow oop
144 map->set_narrowoop(vmReg);
145 #else
146 } else if (bytes == 4) {
147 map->set_oop(vmReg);
148 #endif
149 } else {
150 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
151 }
152 }
153
154 Handle callee_save_info(THREAD, (oop) DebugInfo::calleeSaveInfo(debug_info));
155 if (callee_save_info.not_null()) {
156 objArrayHandle registers(THREAD, RegisterSaveLayout::registers(callee_save_info));
157 typeArrayHandle slots(THREAD, RegisterSaveLayout::slots(callee_save_info));
158 for (jint i = 0; i < slots->length(); i++) {
159 Handle jvmci_reg (THREAD, registers->obj_at(i));
160 jint jvmci_reg_number = code_Register::number(jvmci_reg);
161 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
162 // HotSpot stack slots are 4 bytes
163 jint jvmci_slot = slots->int_at(i);
164 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
165 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
166 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
167 #ifdef _LP64
168 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
169 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
170 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
171 #endif
172 }
173 }
174 return map;
175 }
176
177 AOTOopRecorder::AOTOopRecorder(Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) {
178 _meta_refs = new GrowableArray<jobject>();
179 }
180
181 int AOTOopRecorder::nr_meta_refs() const {
182 return _meta_refs->length();
183 }
184
185 jobject AOTOopRecorder::meta_element(int pos) const {
186 return _meta_refs->at(pos);
187 }
188
189 int AOTOopRecorder::find_index(Metadata* h) {
190 JavaThread* THREAD = JavaThread::current();
191 int oldCount = metadata_count();
192 int index = this->OopRecorder::find_index(h);
193 int newCount = metadata_count();
194
195 if (oldCount == newCount) {
196 // found a match
197 return index;
198 }
199
200 vmassert(index + 1 == newCount, "must be last");
201
202 Klass* klass = NULL;
203 oop result = NULL;
204 if (h->is_klass()) {
205 klass = (Klass*) h;
206 result = CompilerToVM::get_jvmci_type(klass, CATCH);
207 } else if (h->is_method()) {
208 Method* method = (Method*) h;
209 methodHandle mh(method);
210 result = CompilerToVM::get_jvmci_method(method, CATCH);
211 }
212 jobject ref = JNIHandles::make_local(THREAD, result);
213 record_meta_ref(ref, index);
214
215 return index;
216 }
217
218 int AOTOopRecorder::find_index(jobject h) {
219 if (h == NULL) {
220 return 0;
221 }
222 oop javaMirror = JNIHandles::resolve(h);
223 Klass* klass = java_lang_Class::as_Klass(javaMirror);
224 return find_index(klass);
225 }
226
227 void AOTOopRecorder::record_meta_ref(jobject o, int index) {
228 assert(index > 0, "must be 1..n");
229 index -= 1; // reduce by one to convert to array index
230
231 assert(index == _meta_refs->length(), "must be last");
232 _meta_refs->append(o);
233 }
234
235 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
236 /*
237 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
238 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
239 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
240 * base class (Metadata* or MetaspaceObj*).
241 */
242 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
243 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
244 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
245 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
246 int index = _oop_recorder->find_index(klass);
247 section->relocate(dest, metadata_Relocation::spec(index));
248 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
249 return klass;
250 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
251 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
252 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
253 int index = _oop_recorder->find_index(method);
254 section->relocate(dest, metadata_Relocation::spec(index));
255 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
256 return method;
257 } else {
258 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
259 }
260 }
261
262 #ifdef _LP64
263 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
264 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
265 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
266
267 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
268 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
269 }
270
271 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
272 int index = _oop_recorder->find_index(klass);
273 section->relocate(dest, metadata_Relocation::spec(index));
274 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
275 return Klass::encode_klass(klass);
276 }
277 #endif
278
279 Location::Type CodeInstaller::get_oop_type(Thread* thread, Handle value) {
280 Handle valueKind(thread, Value::valueKind(value));
281 Handle platformKind(thread, ValueKind::platformKind(valueKind));
282
283 if (platformKind == word_kind()) {
284 return Location::oop;
285 } else {
286 return Location::narrowoop;
287 }
288 }
289
290 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
291 second = NULL;
292 if (value.is_null()) {
293 THROW_NULL(vmSymbols::java_lang_NullPointerException());
294 } else if (value == Value::ILLEGAL()) {
295 if (type != T_ILLEGAL) {
296 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
297 }
298 return _illegal_value;
299 } else if (value->is_a(RegisterValue::klass())) {
300 Handle reg(THREAD, RegisterValue::reg(value));
301 jint number = code_Register::number(reg);
302 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL);
303 if (is_general_purpose_reg(hotspotRegister)) {
304 Location::Type locationType;
305 if (type == T_OBJECT) {
306 locationType = get_oop_type(THREAD, value);
307 } else if (type == T_LONG) {
308 locationType = Location::lng;
309 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
310 locationType = Location::int_in_long;
311 } else {
312 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
313 }
314 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
315 if (type == T_LONG) {
316 second = value;
317 }
318 return value;
319 } else {
320 Location::Type locationType;
321 if (type == T_FLOAT) {
322 // this seems weird, but the same value is used in c1_LinearScan
323 locationType = Location::normal;
324 } else if (type == T_DOUBLE) {
325 locationType = Location::dbl;
326 } else {
327 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
328 }
329 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
330 if (type == T_DOUBLE) {
331 second = value;
332 }
333 return value;
334 }
335 } else if (value->is_a(StackSlot::klass())) {
336 jint offset = StackSlot::offset(value);
337 if (StackSlot::addFrameSize(value)) {
338 offset += _total_frame_size;
339 }
340
341 Location::Type locationType;
342 if (type == T_OBJECT) {
343 locationType = get_oop_type(THREAD, value);
344 } else if (type == T_LONG) {
345 locationType = Location::lng;
346 } else if (type == T_DOUBLE) {
347 locationType = Location::dbl;
348 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
349 locationType = Location::normal;
350 } else {
351 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
352 }
353 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
354 if (type == T_DOUBLE || type == T_LONG) {
355 second = value;
356 }
357 return value;
358 } else if (value->is_a(JavaConstant::klass())) {
359 if (value->is_a(PrimitiveConstant::klass())) {
360 if (value->is_a(RawConstant::klass())) {
361 jlong prim = PrimitiveConstant::primitive(value);
362 return new ConstantLongValue(prim);
363 } else {
364 Handle primitive_constant_kind(THREAD, PrimitiveConstant::kind(value));
365 BasicType constantType = JVMCIRuntime::kindToBasicType(primitive_constant_kind, CHECK_NULL);
366 if (type != constantType) {
367 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
368 }
369 if (type == T_INT || type == T_FLOAT) {
370 jint prim = (jint)PrimitiveConstant::primitive(value);
371 switch (prim) {
372 case -1: return _int_m1_scope_value;
373 case 0: return _int_0_scope_value;
374 case 1: return _int_1_scope_value;
375 case 2: return _int_2_scope_value;
376 default: return new ConstantIntValue(prim);
377 }
378 } else if (type == T_LONG || type == T_DOUBLE) {
379 jlong prim = PrimitiveConstant::primitive(value);
380 second = _int_1_scope_value;
381 return new ConstantLongValue(prim);
382 } else {
383 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
384 }
385 }
386 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) {
387 if (type == T_OBJECT) {
388 return _oop_null_scope_value;
389 } else {
390 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
391 }
392 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) {
393 if (type == T_OBJECT) {
394 oop obj = HotSpotObjectConstantImpl::object(value);
395 if (obj == NULL) {
396 JVMCI_ERROR_NULL("null value must be in NullConstant");
397 }
398 return new ConstantOopWriteValue(JNIHandles::make_local(obj));
399 } else {
400 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
401 }
402 }
403 } else if (value->is_a(VirtualObject::klass())) {
404 if (type == T_OBJECT) {
405 int id = VirtualObject::id(value);
406 if (0 <= id && id < objects->length()) {
407 ScopeValue* object = objects->at(id);
408 if (object != NULL) {
409 return object;
410 }
411 }
412 JVMCI_ERROR_NULL("unknown virtual object id %d", id);
413 } else {
414 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
415 }
416 }
417
418 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name())
419 }
420
421 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
422 // Might want a HandleMark here.
423 Handle type(THREAD, VirtualObject::type(value));
424 int id = VirtualObject::id(value);
425 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
426 Klass* klass = java_lang_Class::as_Klass(javaMirror);
427 bool isLongArray = klass == Universe::longArrayKlassObj();
428
429 objArrayHandle values(THREAD, VirtualObject::values(value));
430 objArrayHandle slotKinds(THREAD, VirtualObject::slotKinds(value));
431 for (jint i = 0; i < values->length(); i++) {
432 HandleMark hm(THREAD);
433 ScopeValue* cur_second = NULL;
434 Handle object(THREAD, values->obj_at(i));
435 Handle slot_kind (THREAD, slotKinds->obj_at(i));
436 BasicType type = JVMCIRuntime::kindToBasicType(slot_kind, CHECK);
437 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK);
438
439 if (isLongArray && cur_second == NULL) {
440 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
441 // add an int 0 constant
442 cur_second = _int_0_scope_value;
443 }
444
445 if (cur_second != NULL) {
446 sv->field_values()->append(cur_second);
447 }
448 assert(value != NULL, "missing value");
449 sv->field_values()->append(value);
450 }
451 }
452
453 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
454 if (value.is_null()) {
455 THROW_NULL(vmSymbols::java_lang_NullPointerException());
456 }
457 if (!value->is_a(StackLockValue::klass())) {
458 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name());
459 }
460
461 ScopeValue* second = NULL;
462 Handle stack_lock_owner(THREAD, StackLockValue::owner(value));
463 ScopeValue* owner_value = get_scope_value(stack_lock_owner, T_OBJECT, objects, second, CHECK_NULL);
464 assert(second == NULL, "monitor cannot occupy two stack slots");
465
466 Handle stack_lock_slot(THREAD, StackLockValue::slot(value));
467 ScopeValue* lock_data_value = get_scope_value(stack_lock_slot, T_LONG, objects, second, CHECK_NULL);
468 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
469 assert(lock_data_value->is_location(), "invalid monitor location");
470 Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
471
472 bool eliminated = false;
473 if (StackLockValue::eliminated(value)) {
474 eliminated = true;
475 }
476
477 return new MonitorValue(owner_value, lock_data_loc, eliminated);
478 }
479
480 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) {
481 JavaThread* thread = JavaThread::current();
482 assert(THREAD == thread, "");
483 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
484 _oop_recorder = recorder;
485 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
486 objArrayHandle assumptions(THREAD, HotSpotCompiledCode::assumptions(compiled_code));
487 if (!assumptions.is_null()) {
488 int length = assumptions->length();
489 for (int i = 0; i < length; ++i) {
490 Handle assumption(THREAD, assumptions->obj_at(i));
491 if (!assumption.is_null()) {
492 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) {
493 assumption_NoFinalizableSubclass(THREAD, assumption);
494 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) {
495 assumption_ConcreteSubtype(THREAD, assumption);
496 } else if (assumption->klass() == Assumptions_LeafType::klass()) {
497 assumption_LeafType(THREAD, assumption);
498 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) {
499 assumption_ConcreteMethod(THREAD, assumption);
500 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) {
501 assumption_CallSiteTargetValue(THREAD, assumption);
502 } else {
503 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name());
504 }
505 }
506 }
507 }
508 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
509 objArrayHandle methods(THREAD, HotSpotCompiledCode::methods(compiled_code));
510 if (!methods.is_null()) {
511 int length = methods->length();
512 for (int i = 0; i < length; ++i) {
513 Handle method_handle(THREAD, methods->obj_at(i));
514 methodHandle method = getMethodFromHotSpotMethod(method_handle());
515 _dependencies->assert_evol_method(method());
516 }
517 }
518 }
519 }
520
521 RelocBuffer::~RelocBuffer() {
522 if (_buffer != NULL) {
523 FREE_C_HEAP_ARRAY(char, _buffer);
524 }
525 }
526
527 address RelocBuffer::begin() const {
528 if (_buffer != NULL) {
529 return (address) _buffer;
530 }
531 return (address) _static_buffer;
532 }
533
534 void RelocBuffer::set_size(size_t bytes) {
535 assert(bytes <= _size, "can't grow in size!");
536 _size = bytes;
537 }
538
539 void RelocBuffer::ensure_size(size_t bytes) {
540 assert(_buffer == NULL, "can only be used once");
541 assert(_size == 0, "can only be used once");
542 if (bytes >= RelocBuffer::stack_size) {
543 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal);
544 }
545 _size = bytes;
546 }
547
548 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) {
549 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
550 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
551 AOTOopRecorder* recorder = new AOTOopRecorder(&_arena, true);
552 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
553
554 metadata.set_oop_recorder(recorder);
555
556 // Get instructions and constants CodeSections early because we need it.
557 _instructions = buffer.insts();
558 _constants = buffer.consts();
559
560 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
561 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, false, CHECK_OK);
562 if (result != JVMCIEnv::ok) {
563 return result;
564 }
565
566 _debug_recorder->pcs_size(); // create the sentinel record
567
568 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
569
570 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
571 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
572 metadata.set_exception_table(&_exception_handler_table);
573
574 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
575
576 reloc_buffer->ensure_size(buffer.total_relocation_size());
577 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
578 reloc_buffer->set_size(size);
579 return JVMCIEnv::ok;
580 }
581
582 // constructor used to create a method
583 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) {
584 CodeBuffer buffer("JVMCI Compiler CodeBuffer");
585 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
586 OopRecorder* recorder = new OopRecorder(&_arena, true);
587 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
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, true, CHECK_OK);
595 if (result != JVMCIEnv::ok) {
596 return result;
597 }
598
599 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
600
601 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
602 oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
603 if (oopDesc::is_null(stubName)) {
604 JVMCI_ERROR_OK("stub should have a name");
605 }
606 char* name = strdup(java_lang_String::as_utf8_string(stubName));
607 cb = RuntimeStub::new_runtime_stub(name,
608 &buffer,
609 CodeOffsets::frame_never_safe,
610 stack_slots,
611 _debug_recorder->_oopmaps,
612 false);
613 result = JVMCIEnv::ok;
614 } else {
615 nmethod* nm = NULL;
616 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code));
617 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code);
618 jint id = HotSpotCompiledNmethod::id(compiled_code);
619 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE;
620 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code);
621 if (id == -1) {
622 // Make sure a valid compile_id is associated with every compile
623 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
624 }
625 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
626 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table,
627 compiler, _debug_recorder, _dependencies, env, id,
628 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log);
629 cb = nm->as_codeblob_or_null();
630 if (nm != NULL && env == NULL) {
631 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
632 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
633 if (!printnmethods && (PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers)) {
634 nm->print_nmethod(printnmethods);
635 }
636 DirectivesStack::release(directive);
637 }
638 }
639
640 if (cb != NULL) {
641 // Make sure the pre-calculated constants section size was correct.
642 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
643 }
644 return result;
645 }
646
647 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) {
648 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
649 Handle hotspotJavaMethod(THREAD, HotSpotCompiledNmethod::method(compiled_code));
650 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod());
651 _parameter_count = method->size_of_parameters();
652 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
653 } else {
654 // Must be a HotSpotCompiledRuntimeStub.
655 // Only used in OopMap constructor for non-product builds
656 _parameter_count = 0;
657 }
658 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code));
659
660 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code));
661 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code);
662 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code);
663
664 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code);
665 if (deoptRescueSlot == NULL) {
666 _orig_pc_offset = -1;
667 } else {
668 _orig_pc_offset = StackSlot::offset(deoptRescueSlot);
669 if (StackSlot::addFrameSize(deoptRescueSlot)) {
670 _orig_pc_offset += _total_frame_size;
671 }
672 if (_orig_pc_offset < 0) {
673 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
674 }
675 }
676
677 // Pre-calculate the constants section size. This is required for PC-relative addressing.
678 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code));
679 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) {
680 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code));
681 }
682 _constants_size = data_section()->length();
683
684 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code));
685
686 #ifndef PRODUCT
687 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code));
688 #endif
689
690 _next_call_type = INVOKE_INVALID;
691
692 _has_wide_vector = false;
693
694 oop arch = TargetDescription::arch(target);
695 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch));
696 }
697
698 int CodeInstaller::estimate_stubs_size(TRAPS) {
699 // Estimate the number of static and aot call stubs that might be emitted.
700 int static_call_stubs = 0;
701 int aot_call_stubs = 0;
702 int trampoline_stubs = 0;
703 objArrayOop sites = this->sites();
704 for (int i = 0; i < sites->length(); i++) {
705 oop site = sites->obj_at(i);
706 if (site != NULL) {
707 if (site->is_a(site_Mark::klass())) {
708 oop id_obj = site_Mark::id(site);
709 if (id_obj != NULL) {
710 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) {
711 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name());
712 }
713 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
714 switch (id) {
715 case INVOKEINTERFACE:
716 case INVOKEVIRTUAL:
717 trampoline_stubs++;
718 break;
719 case INVOKESTATIC:
720 case INVOKESPECIAL:
721 static_call_stubs++;
722 trampoline_stubs++;
723 break;
724 default:
725 break;
726 }
727 }
728 }
729 if (UseAOT && site->is_a(site_Call::klass())) {
730 oop target = site_Call::target(site);
731 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
732 if (!target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
733 // Add far aot trampolines.
734 aot_call_stubs++;
735 }
736 }
737 }
738 }
739 int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size();
740 size += trampoline_stubs * CompiledStaticCall::to_trampoline_stub_size();
741 #if INCLUDE_AOT
742 size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size();
743 #endif
744 return size;
745 }
746
747 // perform data and call relocation on the CodeBuffer
748 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, TRAPS) {
749 HandleMark hm;
750 objArrayHandle sites(THREAD, this->sites());
751 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo));
752
753 // Allocate enough space in the stub section for the static call
754 // stubs. Stubs have extra relocs but they are managed by the stub
755 // section itself so they don't need to be accounted for in the
756 // locs_buffer above.
757 int stubs_size = estimate_stubs_size(CHECK_OK);
758 int total_size = align_up(_code_size, buffer.insts()->alignment()) + align_up(_constants_size, buffer.consts()->alignment()) + align_up(stubs_size, buffer.stubs()->alignment());
759
760 if (check_size && total_size > JVMCINMethodSizeLimit) {
761 return JVMCIEnv::code_too_large;
762 }
763
764 buffer.initialize(total_size, locs_buffer_size);
765 if (buffer.blob() == NULL) {
766 return JVMCIEnv::cache_full;
767 }
768 buffer.initialize_stubs_size(stubs_size);
769 buffer.initialize_consts_size(_constants_size);
770
771 _debug_recorder = new DebugInformationRecorder(_oop_recorder);
772 _debug_recorder->set_oopmaps(new OopMapSet());
773
774 buffer.initialize_oop_recorder(_oop_recorder);
775
776 // copy the constant data into the newly created CodeBuffer
777 address end_data = _constants->start() + _constants_size;
778 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size);
779 _constants->set_end(end_data);
780
781 // copy the code into the newly created CodeBuffer
782 address end_pc = _instructions->start() + _code_size;
783 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
784 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size);
785 _instructions->set_end(end_pc);
786
787 for (int i = 0; i < data_section_patches()->length(); i++) {
788 HandleMark hm(THREAD);
789 Handle patch(THREAD, data_section_patches()->obj_at(i));
790 if (patch.is_null()) {
791 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
792 }
793 Handle reference(THREAD, site_DataPatch::reference(patch));
794 if (reference.is_null()) {
795 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
796 }
797 if (!reference->is_a(site_ConstantReference::klass())) {
798 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
799 }
800 Handle constant(THREAD, site_ConstantReference::constant(reference));
801 if (constant.is_null()) {
802 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
803 }
804 address dest = _constants->start() + site_Site::pcOffset(patch);
805 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
806 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
807 #ifdef _LP64
808 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK);
809 #else
810 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
811 #endif
812 } else {
813 *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK);
814 }
815 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
816 Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant));
817 jobject value = JNIHandles::make_local(obj());
818 int oop_index = _oop_recorder->find_index(value);
819
820 if (HotSpotObjectConstantImpl::compressed(constant)) {
821 #ifdef _LP64
822 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
823 #else
824 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
825 #endif
826 } else {
827 _constants->relocate(dest, oop_Relocation::spec(oop_index));
828 }
829 } else {
830 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
831 }
832 }
833 jint last_pc_offset = -1;
834 for (int i = 0; i < sites->length(); i++) {
835 HandleMark hm(THREAD);
836 Handle site(THREAD, sites->obj_at(i));
837 if (site.is_null()) {
838 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
839 }
840
841 jint pc_offset = site_Site::pcOffset(site);
842
843 if (site->is_a(site_Call::klass())) {
844 TRACE_jvmci_4("call at %i", pc_offset);
845 site_Call(buffer, pc_offset, site, CHECK_OK);
846 } else if (site->is_a(site_Infopoint::klass())) {
847 // three reasons for infopoints denote actual safepoints
848 oop reason = site_Infopoint::reason(site);
849 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) {
850 TRACE_jvmci_4("safepoint at %i", pc_offset);
851 site_Safepoint(buffer, pc_offset, site, CHECK_OK);
852 if (_orig_pc_offset < 0) {
853 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
854 }
855 } else {
856 TRACE_jvmci_4("infopoint at %i", pc_offset);
857 site_Infopoint(buffer, pc_offset, site, CHECK_OK);
858 }
859 } else if (site->is_a(site_DataPatch::klass())) {
860 TRACE_jvmci_4("datapatch at %i", pc_offset);
861 site_DataPatch(buffer, pc_offset, site, CHECK_OK);
862 } else if (site->is_a(site_Mark::klass())) {
863 TRACE_jvmci_4("mark at %i", pc_offset);
864 site_Mark(buffer, pc_offset, site, CHECK_OK);
865 } else if (site->is_a(site_ExceptionHandler::klass())) {
866 TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
867 site_ExceptionHandler(pc_offset, site);
868 } else {
869 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name());
870 }
871 last_pc_offset = pc_offset;
872
873 JavaThread* thread = JavaThread::current();
874 if (SafepointMechanism::poll(thread)) {
875 // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
876 ThreadToNativeFromVM ttnfv(thread);
877 }
878 }
879
880 #ifndef PRODUCT
881 if (comments() != NULL) {
882 for (int i = 0; i < comments()->length(); i++) {
883 oop comment = comments()->obj_at(i);
884 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce");
885 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment);
886 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment));
887 buffer.block_comment(offset, text);
888 }
889 }
890 #endif
891 return JVMCIEnv::ok;
892 }
893
894 void CodeInstaller::assumption_NoFinalizableSubclass(Thread* thread, Handle assumption) {
895 Handle receiverType_handle (thread, Assumptions_NoFinalizableSubclass::receiverType(assumption()));
896 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle));
897 _dependencies->assert_has_no_finalizable_subclasses(receiverType);
898 }
899
900 void CodeInstaller::assumption_ConcreteSubtype(Thread* thread, Handle assumption) {
901 Handle context_handle (thread, Assumptions_ConcreteSubtype::context(assumption()));
902 Handle subtype_handle (thread, Assumptions_ConcreteSubtype::subtype(assumption()));
903 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
904 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle));
905
906 assert(context->is_abstract(), "");
907 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
908 }
909
910 void CodeInstaller::assumption_LeafType(Thread* thread, Handle assumption) {
911 Handle context_handle (thread, Assumptions_LeafType::context(assumption()));
912 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
913
914 _dependencies->assert_leaf_type(context);
915 }
916
917 void CodeInstaller::assumption_ConcreteMethod(Thread* thread, Handle assumption) {
918 Handle impl_handle (thread, Assumptions_ConcreteMethod::impl(assumption()));
919 Handle context_handle (thread, Assumptions_ConcreteMethod::context(assumption()));
920
921 methodHandle impl = getMethodFromHotSpotMethod(impl_handle());
922 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
923
924 _dependencies->assert_unique_concrete_method(context, impl());
925 }
926
927 void CodeInstaller::assumption_CallSiteTargetValue(Thread* thread, Handle assumption) {
928 Handle callSite(thread, Assumptions_CallSiteTargetValue::callSite(assumption()));
929 Handle methodHandle(thread, Assumptions_CallSiteTargetValue::methodHandle(assumption()));
930
931 _dependencies->assert_call_site_target_value(callSite(), methodHandle());
932 }
933
934 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) {
935 jint handler_offset = site_ExceptionHandler::handlerPos(exc);
936
937 // Subtable header
938 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
939
940 // Subtable entry
941 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
942 }
943
944 // If deoptimization happens, the interpreter should reexecute these bytecodes.
945 // This function mainly helps the compilers to set up the reexecute bit.
946 static bool bytecode_should_reexecute(Bytecodes::Code code) {
947 switch (code) {
948 case Bytecodes::_invokedynamic:
949 case Bytecodes::_invokevirtual:
950 case Bytecodes::_invokeinterface:
951 case Bytecodes::_invokespecial:
952 case Bytecodes::_invokestatic:
953 return false;
954 default:
955 return true;
956 }
957 return true;
958 }
959
960 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) {
961 objArrayHandle virtualObjects(THREAD, DebugInfo::virtualObjectMapping(debug_info));
962 if (virtualObjects.is_null()) {
963 return NULL;
964 }
965 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL);
966 // Create the unique ObjectValues
967 for (int i = 0; i < virtualObjects->length(); i++) {
968 HandleMark hm(THREAD);
969 Handle value(THREAD, virtualObjects->obj_at(i));
970 int id = VirtualObject::id(value);
971 Handle type(THREAD, VirtualObject::type(value));
972 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
973 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror)));
974 if (id < 0 || id >= objects->length()) {
975 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
976 }
977 if (objects->at(id) != NULL) {
978 JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
979 }
980 objects->at_put(id, sv);
981 }
982 // All the values which could be referenced by the VirtualObjects
983 // exist, so now describe all the VirtualObjects themselves.
984 for (int i = 0; i < virtualObjects->length(); i++) {
985 HandleMark hm(THREAD);
986 Handle value(THREAD, virtualObjects->obj_at(i));
987 int id = VirtualObject::id(value);
988 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL);
989 }
990 _debug_recorder->dump_object_pool(objects);
991 return objects;
992 }
993
994 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, bool return_oop, TRAPS) {
995 Handle position(THREAD, DebugInfo::bytecodePosition(debug_info));
996 if (position.is_null()) {
997 // Stubs do not record scope info, just oop maps
998 return;
999 }
1000
1001 GrowableArray<ScopeValue*>* objectMapping;
1002 if (scope_mode == CodeInstaller::FullFrame) {
1003 objectMapping = record_virtual_objects(debug_info, CHECK);
1004 } else {
1005 objectMapping = NULL;
1006 }
1007 record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, CHECK);
1008 }
1009
1010 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, TRAPS) {
1011 Handle frame;
1012 if (scope_mode == CodeInstaller::FullFrame) {
1013 if (!position->is_a(BytecodeFrame::klass())) {
1014 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
1015 }
1016 frame = position;
1017 }
1018 Handle caller_frame (THREAD, BytecodePosition::caller(position));
1019 if (caller_frame.not_null()) {
1020 record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, CHECK);
1021 }
1022
1023 Handle hotspot_method (THREAD, BytecodePosition::method(position));
1024 Method* method = getMethodFromHotSpotMethod(hotspot_method());
1025 jint bci = BytecodePosition::bci(position);
1026 if (bci == BytecodeFrame::BEFORE_BCI()) {
1027 bci = SynchronizationEntryBCI;
1028 }
1029
1030 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
1031
1032 bool reexecute = false;
1033 if (frame.not_null()) {
1034 if (bci == SynchronizationEntryBCI){
1035 reexecute = false;
1036 } else {
1037 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
1038 reexecute = bytecode_should_reexecute(code);
1039 if (frame.not_null()) {
1040 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE);
1041 }
1042 }
1043 }
1044
1045 DebugToken* locals_token = NULL;
1046 DebugToken* expressions_token = NULL;
1047 DebugToken* monitors_token = NULL;
1048 bool throw_exception = false;
1049
1050 if (frame.not_null()) {
1051 jint local_count = BytecodeFrame::numLocals(frame);
1052 jint expression_count = BytecodeFrame::numStack(frame);
1053 jint monitor_count = BytecodeFrame::numLocks(frame);
1054 objArrayHandle values(THREAD, BytecodeFrame::values(frame));
1055 objArrayHandle slotKinds(THREAD, BytecodeFrame::slotKinds(frame));
1056
1057 if (values.is_null() || slotKinds.is_null()) {
1058 THROW(vmSymbols::java_lang_NullPointerException());
1059 }
1060 if (local_count + expression_count + monitor_count != values->length()) {
1061 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count);
1062 }
1063 if (local_count + expression_count != slotKinds->length()) {
1064 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count);
1065 }
1066
1067 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
1068 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
1069 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
1070
1071 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length());
1072 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
1073
1074 for (jint i = 0; i < values->length(); i++) {
1075 HandleMark hm(THREAD);
1076 ScopeValue* second = NULL;
1077 Handle value(THREAD, values->obj_at(i));
1078 if (i < local_count) {
1079 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1080 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1081 if (second != NULL) {
1082 locals->append(second);
1083 }
1084 locals->append(first);
1085 } else if (i < local_count + expression_count) {
1086 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1087 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1088 if (second != NULL) {
1089 expressions->append(second);
1090 }
1091 expressions->append(first);
1092 } else {
1093 MonitorValue *monitor = get_monitor_value(value, objects, CHECK);
1094 monitors->append(monitor);
1095 }
1096 if (second != NULL) {
1097 i++;
1098 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) {
1099 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
1100 }
1101 }
1102 }
1103
1104 locals_token = _debug_recorder->create_scope_values(locals);
1105 expressions_token = _debug_recorder->create_scope_values(expressions);
1106 monitors_token = _debug_recorder->create_monitor_values(monitors);
1107
1108 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE;
1109 }
1110
1111 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop,
1112 locals_token, expressions_token, monitors_token);
1113 }
1114
1115 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1116 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1117 if (debug_info.is_null()) {
1118 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1119 }
1120
1121 // address instruction = _instructions->start() + pc_offset;
1122 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1123 OopMap *map = create_oop_map(debug_info, CHECK);
1124 _debug_recorder->add_safepoint(pc_offset, map);
1125 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1126 _debug_recorder->end_safepoint(pc_offset);
1127 }
1128
1129 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1130 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1131 if (debug_info.is_null()) {
1132 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1133 }
1134
1135 // We'd like to check that pc_offset is greater than the
1136 // last pc recorded with _debug_recorder (raising an exception if not)
1137 // but DebugInformationRecorder doesn't have sufficient public API.
1138
1139 _debug_recorder->add_non_safepoint(pc_offset);
1140 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK);
1141 _debug_recorder->end_non_safepoint(pc_offset);
1142 }
1143
1144 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1145 Handle target(THREAD, site_Call::target(site));
1146 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
1147
1148 Handle hotspot_method; // JavaMethod
1149 Handle foreign_call;
1150
1151 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
1152 foreign_call = target;
1153 } else {
1154 hotspot_method = target;
1155 }
1156
1157 Handle debug_info (THREAD, site_Call::debugInfo(site));
1158
1159 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type");
1160
1161 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1162 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK);
1163
1164 if (debug_info.not_null()) {
1165 OopMap *map = create_oop_map(debug_info, CHECK);
1166 _debug_recorder->add_safepoint(next_pc_offset, map);
1167
1168 bool return_oop = hotspot_method.not_null() && getMethodFromHotSpotMethod(hotspot_method())->is_returning_oop();
1169
1170 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, CHECK);
1171 }
1172
1173 if (foreign_call.not_null()) {
1174 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call);
1175 if (_immutable_pic_compilation) {
1176 // Use fake short distance during PIC compilation.
1177 foreign_call_destination = (jlong)(_instructions->start() + pc_offset);
1178 }
1179 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK);
1180 } else { // method != NULL
1181 if (debug_info.is_null()) {
1182 JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1183 }
1184
1185 TRACE_jvmci_3("method call");
1186 CodeInstaller::pd_relocate_JavaMethod(buffer, hotspot_method, pc_offset, CHECK);
1187 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1188 // Need a static call stub for transitions from compiled to interpreted.
1189 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1190 }
1191 #if INCLUDE_AOT
1192 // Trampoline to far aot code.
1193 CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset);
1194 #endif
1195 }
1196
1197 _next_call_type = INVOKE_INVALID;
1198
1199 if (debug_info.not_null()) {
1200 _debug_recorder->end_safepoint(next_pc_offset);
1201 }
1202 }
1203
1204 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1205 Handle reference(THREAD, site_DataPatch::reference(site));
1206 if (reference.is_null()) {
1207 THROW(vmSymbols::java_lang_NullPointerException());
1208 } else if (reference->is_a(site_ConstantReference::klass())) {
1209 Handle constant(THREAD, site_ConstantReference::constant(reference));
1210 if (constant.is_null()) {
1211 THROW(vmSymbols::java_lang_NullPointerException());
1212 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
1213 if (!_immutable_pic_compilation) {
1214 // Do not patch during PIC compilation.
1215 pd_patch_OopConstant(pc_offset, constant, CHECK);
1216 }
1217 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
1218 if (!_immutable_pic_compilation) {
1219 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK);
1220 }
1221 } else if (constant->is_a(HotSpotSentinelConstant::klass())) {
1222 if (!_immutable_pic_compilation) {
1223 JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", constant->klass()->signature_name());
1224 }
1225 } else {
1226 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name());
1227 }
1228 } else if (reference->is_a(site_DataSectionReference::klass())) {
1229 int data_offset = site_DataSectionReference::offset(reference);
1230 if (0 <= data_offset && data_offset < _constants_size) {
1231 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK);
1232 } else {
1233 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1234 }
1235 } else {
1236 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name());
1237 }
1238 }
1239
1240 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1241 Handle id_obj (THREAD, site_Mark::id(site));
1242
1243 if (id_obj.not_null()) {
1244 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) {
1245 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name());
1246 }
1247 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
1248
1249 address pc = _instructions->start() + pc_offset;
1250
1251 switch (id) {
1252 case UNVERIFIED_ENTRY:
1253 _offsets.set_value(CodeOffsets::Entry, pc_offset);
1254 break;
1255 case VERIFIED_ENTRY:
1256 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1257 break;
1258 case OSR_ENTRY:
1259 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1260 break;
1261 case EXCEPTION_HANDLER_ENTRY:
1262 _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1263 break;
1264 case DEOPT_HANDLER_ENTRY:
1265 _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1266 break;
1267 case INVOKEVIRTUAL:
1268 case INVOKEINTERFACE:
1269 case INLINE_INVOKE:
1270 case INVOKESTATIC:
1271 case INVOKESPECIAL:
1272 _next_call_type = (MarkId) id;
1273 _invoke_mark_pc = pc;
1274 break;
1275 case POLL_NEAR:
1276 case POLL_FAR:
1277 case POLL_RETURN_NEAR:
1278 case POLL_RETURN_FAR:
1279 pd_relocate_poll(pc, id, CHECK);
1280 break;
1281 case CARD_TABLE_SHIFT:
1282 case CARD_TABLE_ADDRESS:
1283 case HEAP_TOP_ADDRESS:
1284 case HEAP_END_ADDRESS:
1285 case NARROW_KLASS_BASE_ADDRESS:
1286 case NARROW_OOP_BASE_ADDRESS:
1287 case CRC_TABLE_ADDRESS:
1288 case LOG_OF_HEAP_REGION_GRAIN_BYTES:
1289 case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED:
1290 break;
1291 default:
1292 JVMCI_ERROR("invalid mark id: %d", id);
1293 break;
1294 }
1295 }
1296 }