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 "utilities/align.hpp"
41
42 // frequently used constants
43 // Allocate them with new so they are never destroyed (otherwise, a
44 // forced exit could destroy these objects while they are still in
45 // use).
46 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL);
47 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1);
48 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(0);
49 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1);
50 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2);
51 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location());
52
53 Method* getMethodFromHotSpotMethod(oop hotspot_method) {
54 assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity");
55 return CompilerToVM::asMethod(hotspot_method);
56 }
57
58 VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) {
59 if (location.is_null()) {
60 THROW_NULL(vmSymbols::java_lang_NullPointerException());
61 }
62
63 Handle reg(THREAD, code_Location::reg(location));
64 jint offset = code_Location::offset(location);
65
66 if (reg.not_null()) {
67 // register
68 jint number = code_Register::number(reg);
69 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL);
70 if (offset % 4 == 0) {
71 return vmReg->next(offset / 4);
72 } else {
73 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset);
74 }
75 } else {
76 // stack slot
77 if (offset % 4 == 0) {
78 VMReg vmReg = VMRegImpl::stack2reg(offset / 4);
79 if (!OopMapValue::legal_vm_reg_name(vmReg)) {
80 // This restriction only applies to VMRegs that are used in OopMap but
81 // since that's the only use of VMRegs it's simplest to put this test
82 // here. This test should also be equivalent legal_vm_reg_name but JVMCI
83 // clients can use max_oop_map_stack_stack_offset to detect this problem
84 // directly. The asserts just ensure that the tests are in agreement.
85 assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg");
86 JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)",
87 offset, CompilerToVM::Data::max_oop_map_stack_offset());
88 }
89 assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg");
90 return vmReg;
91 } else {
92 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
93 }
94 }
95 }
96
97 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo
98 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) {
99 Handle reference_map(THREAD, DebugInfo::referenceMap(debug_info));
100 if (reference_map.is_null()) {
101 THROW_NULL(vmSymbols::java_lang_NullPointerException());
102 }
103 if (!reference_map->is_a(HotSpotReferenceMap::klass())) {
104 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name());
105 }
106 if (HotSpotReferenceMap::maxRegisterSize(reference_map) > 16) {
107 _has_wide_vector = true;
108 }
109 OopMap* map = new OopMap(_total_frame_size, _parameter_count);
110 objArrayHandle objects(THREAD, HotSpotReferenceMap::objects(reference_map));
111 objArrayHandle derivedBase(THREAD, HotSpotReferenceMap::derivedBase(reference_map));
112 typeArrayHandle sizeInBytes(THREAD, HotSpotReferenceMap::sizeInBytes(reference_map));
113 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
114 THROW_NULL(vmSymbols::java_lang_NullPointerException());
115 }
116 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) {
117 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length());
118 }
119 for (int i = 0; i < objects->length(); i++) {
120 Handle location(THREAD, objects->obj_at(i));
121 Handle baseLocation(THREAD, derivedBase->obj_at(i));
122 int bytes = sizeInBytes->int_at(i);
123
124 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL);
125 if (baseLocation.not_null()) {
126 // derived oop
127 #ifdef _LP64
128 if (bytes == 8) {
129 #else
130 if (bytes == 4) {
131 #endif
132 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL);
133 map->set_derived_oop(vmReg, baseReg);
134 } else {
135 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
136 }
137 #ifdef _LP64
138 } else if (bytes == 8) {
139 // wide oop
140 map->set_oop(vmReg);
141 } else if (bytes == 4) {
142 // narrow oop
143 map->set_narrowoop(vmReg);
144 #else
145 } else if (bytes == 4) {
146 map->set_oop(vmReg);
147 #endif
148 } else {
149 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
150 }
151 }
152
153 Handle callee_save_info(THREAD, (oop) DebugInfo::calleeSaveInfo(debug_info));
154 if (callee_save_info.not_null()) {
155 objArrayHandle registers(THREAD, RegisterSaveLayout::registers(callee_save_info));
156 typeArrayHandle slots(THREAD, RegisterSaveLayout::slots(callee_save_info));
157 for (jint i = 0; i < slots->length(); i++) {
158 Handle jvmci_reg (THREAD, registers->obj_at(i));
159 jint jvmci_reg_number = code_Register::number(jvmci_reg);
160 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
161 // HotSpot stack slots are 4 bytes
162 jint jvmci_slot = slots->int_at(i);
163 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
164 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
165 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
166 #ifdef _LP64
167 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
168 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
169 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
170 #endif
171 }
172 }
173 return map;
174 }
175
176 AOTOopRecorder::AOTOopRecorder(Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) {
177 _meta_strings = new GrowableArray<const char*>();
178 }
179
180 int AOTOopRecorder::nr_meta_strings() const {
181 return _meta_strings->length();
182 }
183
184 const char* AOTOopRecorder::meta_element(int pos) const {
185 return _meta_strings->at(pos);
186 }
187
188 int AOTOopRecorder::find_index(Metadata* h) {
189 int index = this->OopRecorder::find_index(h);
190
191 Klass* klass = NULL;
192 if (h->is_klass()) {
193 klass = (Klass*) h;
194 record_meta_string(klass->signature_name(), index);
195 } else if (h->is_method()) {
196 Method* method = (Method*) h;
197 // Need klass->signature_name() in method name
198 klass = method->method_holder();
199 const char* klass_name = klass->signature_name();
200 int klass_name_len = (int)strlen(klass_name);
201 Symbol* method_name = method->name();
202 Symbol* signature = method->signature();
203 int method_name_len = method_name->utf8_length();
204 int method_sign_len = signature->utf8_length();
205 int len = klass_name_len + 1 + method_name_len + method_sign_len;
206 char* dest = NEW_RESOURCE_ARRAY(char, len + 1);
207 strcpy(dest, klass_name);
208 dest[klass_name_len] = '.';
209 strcpy(&dest[klass_name_len + 1], method_name->as_C_string());
210 strcpy(&dest[klass_name_len + 1 + method_name_len], signature->as_C_string());
211 dest[len] = 0;
212 record_meta_string(dest, index);
213 }
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_string(const char* name, int index) {
228 assert(index > 0, "must be 1..n");
229 index -= 1; // reduce by one to convert to array index
230
231 if (index < _meta_strings->length()) {
232 assert(strcmp(name, _meta_strings->at(index)) == 0, "must match");
233 } else {
234 assert(index == _meta_strings->length(), "must be last");
235 _meta_strings->append(name);
236 }
237 }
238
239 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
240 /*
241 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
242 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
243 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
244 * base class (Metadata* or MetaspaceObj*).
245 */
246 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
247 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
248 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
249 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
250 int index = _oop_recorder->find_index(klass);
251 section->relocate(dest, metadata_Relocation::spec(index));
252 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
253 return klass;
254 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
255 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
256 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
257 int index = _oop_recorder->find_index(method);
258 section->relocate(dest, metadata_Relocation::spec(index));
259 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
260 return method;
261 } else {
262 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
263 }
264 }
265
266 #ifdef _LP64
267 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
268 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
269 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
270
271 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
272 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
273 }
274
275 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
276 int index = _oop_recorder->find_index(klass);
277 section->relocate(dest, metadata_Relocation::spec(index));
278 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
279 return Klass::encode_klass(klass);
280 }
281 #endif
282
283 Location::Type CodeInstaller::get_oop_type(Thread* thread, Handle value) {
284 Handle valueKind(thread, Value::valueKind(value));
285 Handle platformKind(thread, ValueKind::platformKind(valueKind));
286
287 if (platformKind == word_kind()) {
288 return Location::oop;
289 } else {
290 return Location::narrowoop;
291 }
292 }
293
294 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
295 second = NULL;
296 if (value.is_null()) {
297 THROW_NULL(vmSymbols::java_lang_NullPointerException());
298 } else if (value == Value::ILLEGAL()) {
299 if (type != T_ILLEGAL) {
300 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
301 }
302 return _illegal_value;
303 } else if (value->is_a(RegisterValue::klass())) {
304 Handle reg(THREAD, RegisterValue::reg(value));
305 jint number = code_Register::number(reg);
306 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL);
307 if (is_general_purpose_reg(hotspotRegister)) {
308 Location::Type locationType;
309 if (type == T_OBJECT) {
310 locationType = get_oop_type(THREAD, value);
311 } else if (type == T_LONG) {
312 locationType = Location::lng;
313 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
314 locationType = Location::int_in_long;
315 } else {
316 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
317 }
318 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
319 if (type == T_LONG) {
320 second = value;
321 }
322 return value;
323 } else {
324 Location::Type locationType;
325 if (type == T_FLOAT) {
326 // this seems weird, but the same value is used in c1_LinearScan
327 locationType = Location::normal;
328 } else if (type == T_DOUBLE) {
329 locationType = Location::dbl;
330 } else {
331 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
332 }
333 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
334 if (type == T_DOUBLE) {
335 second = value;
336 }
337 return value;
338 }
339 } else if (value->is_a(StackSlot::klass())) {
340 jint offset = StackSlot::offset(value);
341 if (StackSlot::addFrameSize(value)) {
342 offset += _total_frame_size;
343 }
344
345 Location::Type locationType;
346 if (type == T_OBJECT) {
347 locationType = get_oop_type(THREAD, value);
348 } else if (type == T_LONG) {
349 locationType = Location::lng;
350 } else if (type == T_DOUBLE) {
351 locationType = Location::dbl;
352 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
353 locationType = Location::normal;
354 } else {
355 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
356 }
357 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
358 if (type == T_DOUBLE || type == T_LONG) {
359 second = value;
360 }
361 return value;
362 } else if (value->is_a(JavaConstant::klass())) {
363 if (value->is_a(PrimitiveConstant::klass())) {
364 if (value->is_a(RawConstant::klass())) {
365 jlong prim = PrimitiveConstant::primitive(value);
366 return new ConstantLongValue(prim);
367 } else {
368 Handle primitive_constant_kind(THREAD, PrimitiveConstant::kind(value));
369 BasicType constantType = JVMCIRuntime::kindToBasicType(primitive_constant_kind, CHECK_NULL);
370 if (type != constantType) {
371 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
372 }
373 if (type == T_INT || type == T_FLOAT) {
374 jint prim = (jint)PrimitiveConstant::primitive(value);
375 switch (prim) {
376 case -1: return _int_m1_scope_value;
377 case 0: return _int_0_scope_value;
378 case 1: return _int_1_scope_value;
379 case 2: return _int_2_scope_value;
380 default: return new ConstantIntValue(prim);
381 }
382 } else if (type == T_LONG || type == T_DOUBLE) {
383 jlong prim = PrimitiveConstant::primitive(value);
384 second = _int_1_scope_value;
385 return new ConstantLongValue(prim);
386 } else {
387 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
388 }
389 }
390 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) {
391 if (type == T_OBJECT) {
392 return _oop_null_scope_value;
393 } else {
394 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
395 }
396 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) {
397 if (type == T_OBJECT) {
398 oop obj = HotSpotObjectConstantImpl::object(value);
399 if (obj == NULL) {
400 JVMCI_ERROR_NULL("null value must be in NullConstant");
401 }
402 return new ConstantOopWriteValue(JNIHandles::make_local(obj));
403 } else {
404 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
405 }
406 }
407 } else if (value->is_a(VirtualObject::klass())) {
408 if (type == T_OBJECT) {
409 int id = VirtualObject::id(value);
410 if (0 <= id && id < objects->length()) {
411 ScopeValue* object = objects->at(id);
412 if (object != NULL) {
413 return object;
414 }
415 }
416 JVMCI_ERROR_NULL("unknown virtual object id %d", id);
417 } else {
418 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
419 }
420 }
421
422 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name())
423 }
424
425 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
426 // Might want a HandleMark here.
427 Handle type(THREAD, VirtualObject::type(value));
428 int id = VirtualObject::id(value);
429 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
430 Klass* klass = java_lang_Class::as_Klass(javaMirror);
431 bool isLongArray = klass == Universe::longArrayKlassObj();
432
433 objArrayHandle values(THREAD, VirtualObject::values(value));
434 objArrayHandle slotKinds(THREAD, VirtualObject::slotKinds(value));
435 for (jint i = 0; i < values->length(); i++) {
436 HandleMark hm(THREAD);
437 ScopeValue* cur_second = NULL;
438 Handle object(THREAD, values->obj_at(i));
439 Handle slot_kind (THREAD, slotKinds->obj_at(i));
440 BasicType type = JVMCIRuntime::kindToBasicType(slot_kind, CHECK);
441 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK);
442
443 if (isLongArray && cur_second == NULL) {
444 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
445 // add an int 0 constant
446 cur_second = _int_0_scope_value;
447 }
448
449 if (cur_second != NULL) {
450 sv->field_values()->append(cur_second);
451 }
452 assert(value != NULL, "missing value");
453 sv->field_values()->append(value);
454 }
455 }
456
457 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
458 if (value.is_null()) {
459 THROW_NULL(vmSymbols::java_lang_NullPointerException());
460 }
461 if (!value->is_a(StackLockValue::klass())) {
462 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name());
463 }
464
465 ScopeValue* second = NULL;
466 Handle stack_lock_owner(THREAD, StackLockValue::owner(value));
467 ScopeValue* owner_value = get_scope_value(stack_lock_owner, T_OBJECT, objects, second, CHECK_NULL);
468 assert(second == NULL, "monitor cannot occupy two stack slots");
469
470 Handle stack_lock_slot(THREAD, StackLockValue::slot(value));
471 ScopeValue* lock_data_value = get_scope_value(stack_lock_slot, T_LONG, objects, second, CHECK_NULL);
472 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
473 assert(lock_data_value->is_location(), "invalid monitor location");
474 Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
475
476 bool eliminated = false;
477 if (StackLockValue::eliminated(value)) {
478 eliminated = true;
479 }
480
481 return new MonitorValue(owner_value, lock_data_loc, eliminated);
482 }
483
484 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) {
485 JavaThread* thread = JavaThread::current();
486 assert(THREAD == thread, "");
487 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
488 _oop_recorder = recorder;
489 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
490 objArrayHandle assumptions(THREAD, HotSpotCompiledCode::assumptions(compiled_code));
491 if (!assumptions.is_null()) {
492 int length = assumptions->length();
493 for (int i = 0; i < length; ++i) {
494 Handle assumption(THREAD, assumptions->obj_at(i));
495 if (!assumption.is_null()) {
496 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) {
497 assumption_NoFinalizableSubclass(THREAD, assumption);
498 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) {
499 assumption_ConcreteSubtype(THREAD, assumption);
500 } else if (assumption->klass() == Assumptions_LeafType::klass()) {
501 assumption_LeafType(THREAD, assumption);
502 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) {
503 assumption_ConcreteMethod(THREAD, assumption);
504 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) {
505 assumption_CallSiteTargetValue(THREAD, assumption);
506 } else {
507 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name());
508 }
509 }
510 }
511 }
512 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
513 objArrayHandle methods(THREAD, HotSpotCompiledCode::methods(compiled_code));
514 if (!methods.is_null()) {
515 int length = methods->length();
516 for (int i = 0; i < length; ++i) {
517 Handle method_handle(THREAD, methods->obj_at(i));
518 methodHandle method = getMethodFromHotSpotMethod(method_handle());
519 _dependencies->assert_evol_method(method());
520 }
521 }
522 }
523 }
524
525 RelocBuffer::~RelocBuffer() {
526 if (_buffer != NULL) {
527 FREE_C_HEAP_ARRAY(char, _buffer);
528 }
529 }
530
531 address RelocBuffer::begin() const {
532 if (_buffer != NULL) {
533 return (address) _buffer;
534 }
535 return (address) _static_buffer;
536 }
537
538 void RelocBuffer::set_size(size_t bytes) {
539 assert(bytes <= _size, "can't grow in size!");
540 _size = bytes;
541 }
542
543 void RelocBuffer::ensure_size(size_t bytes) {
544 assert(_buffer == NULL, "can only be used once");
545 assert(_size == 0, "can only be used once");
546 if (bytes >= RelocBuffer::stack_size) {
547 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal);
548 }
549 _size = bytes;
550 }
551
552 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) {
553 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
554 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
555 AOTOopRecorder* recorder = new AOTOopRecorder(&_arena, true);
556 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
557
558 metadata.set_oop_recorder(recorder);
559
560 // Get instructions and constants CodeSections early because we need it.
561 _instructions = buffer.insts();
562 _constants = buffer.consts();
563
564 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
565 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, false, CHECK_OK);
566 if (result != JVMCIEnv::ok) {
567 return result;
568 }
569
570 _debug_recorder->pcs_size(); // create the sentinel record
571
572 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
573
574 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
575 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
576 metadata.set_exception_table(&_exception_handler_table);
577
578 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
579
580 reloc_buffer->ensure_size(buffer.total_relocation_size());
581 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
582 reloc_buffer->set_size(size);
583 return JVMCIEnv::ok;
584 }
585
586 // constructor used to create a method
587 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) {
588 CodeBuffer buffer("JVMCI Compiler CodeBuffer");
589 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
590 OopRecorder* recorder = new OopRecorder(&_arena, true);
591 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
592
593 // Get instructions and constants CodeSections early because we need it.
594 _instructions = buffer.insts();
595 _constants = buffer.consts();
596
597 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
598 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, true, CHECK_OK);
599 if (result != JVMCIEnv::ok) {
600 return result;
601 }
602
603 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
604
605 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
606 oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
607 char* name = strdup(java_lang_String::as_utf8_string(stubName));
608 cb = RuntimeStub::new_runtime_stub(name,
609 &buffer,
610 CodeOffsets::frame_never_safe,
611 stack_slots,
612 _debug_recorder->_oopmaps,
613 false);
614 result = JVMCIEnv::ok;
615 } else {
616 nmethod* nm = NULL;
617 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code));
618 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code);
619 jint id = HotSpotCompiledNmethod::id(compiled_code);
620 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE;
621 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code);
622 if (id == -1) {
623 // Make sure a valid compile_id is associated with every compile
624 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
625 }
626 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
627 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table,
628 compiler, _debug_recorder, _dependencies, env, id,
629 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log);
630 cb = nm->as_codeblob_or_null();
631 if (nm != NULL && env == NULL) {
632 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
633 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
634 if (!printnmethods && (PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers)) {
635 nm->print_nmethod(printnmethods);
636 }
637 DirectivesStack::release(directive);
638 }
639 }
640
641 if (cb != NULL) {
642 // Make sure the pre-calculated constants section size was correct.
643 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
644 }
645 return result;
646 }
647
648 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) {
649 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
650 Handle hotspotJavaMethod(THREAD, HotSpotCompiledNmethod::method(compiled_code));
651 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod());
652 _parameter_count = method->size_of_parameters();
653 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
654 } else {
655 // Must be a HotSpotCompiledRuntimeStub.
656 // Only used in OopMap constructor for non-product builds
657 _parameter_count = 0;
658 }
659 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code));
660
661 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code));
662 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code);
663 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code);
664
665 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code);
666 if (deoptRescueSlot == NULL) {
667 _orig_pc_offset = -1;
668 } else {
669 _orig_pc_offset = StackSlot::offset(deoptRescueSlot);
670 if (StackSlot::addFrameSize(deoptRescueSlot)) {
671 _orig_pc_offset += _total_frame_size;
672 }
673 if (_orig_pc_offset < 0) {
674 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
675 }
676 }
677
678 // Pre-calculate the constants section size. This is required for PC-relative addressing.
679 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code));
680 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) {
681 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code));
682 }
683 _constants_size = data_section()->length();
684
685 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code));
686
687 #ifndef PRODUCT
688 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code));
689 #endif
690
691 _next_call_type = INVOKE_INVALID;
692
693 _has_wide_vector = false;
694
695 oop arch = TargetDescription::arch(target);
696 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch));
697 }
698
699 int CodeInstaller::estimate_stubs_size(TRAPS) {
700 // Estimate the number of static and aot call stubs that might be emitted.
701 int static_call_stubs = 0;
702 int aot_call_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 if (id == INVOKESTATIC || id == INVOKESPECIAL) {
715 static_call_stubs++;
716 }
717 }
718 }
719 if (UseAOT && site->is_a(site_Call::klass())) {
720 oop target = site_Call::target(site);
721 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
722 if (!target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
723 // Add far aot trampolines.
724 aot_call_stubs++;
725 }
726 }
727 }
728 }
729 int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size();
730 #if INCLUDE_AOT
731 size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size();
732 #endif
733 return size;
734 }
735
736 // perform data and call relocation on the CodeBuffer
737 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, TRAPS) {
738 HandleMark hm;
739 objArrayHandle sites(THREAD, this->sites());
740 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo));
741
742 // Allocate enough space in the stub section for the static call
743 // stubs. Stubs have extra relocs but they are managed by the stub
744 // section itself so they don't need to be accounted for in the
745 // locs_buffer above.
746 int stubs_size = estimate_stubs_size(CHECK_OK);
747 int total_size = align_up(_code_size, buffer.insts()->alignment()) + align_up(_constants_size, buffer.consts()->alignment()) + align_up(stubs_size, buffer.stubs()->alignment());
748
749 if (check_size && total_size > JVMCINMethodSizeLimit) {
750 return JVMCIEnv::code_too_large;
751 }
752
753 buffer.initialize(total_size, locs_buffer_size);
754 if (buffer.blob() == NULL) {
755 return JVMCIEnv::cache_full;
756 }
757 buffer.initialize_stubs_size(stubs_size);
758 buffer.initialize_consts_size(_constants_size);
759
760 _debug_recorder = new DebugInformationRecorder(_oop_recorder);
761 _debug_recorder->set_oopmaps(new OopMapSet());
762
763 buffer.initialize_oop_recorder(_oop_recorder);
764
765 // copy the constant data into the newly created CodeBuffer
766 address end_data = _constants->start() + _constants_size;
767 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size);
768 _constants->set_end(end_data);
769
770 // copy the code into the newly created CodeBuffer
771 address end_pc = _instructions->start() + _code_size;
772 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
773 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size);
774 _instructions->set_end(end_pc);
775
776 for (int i = 0; i < data_section_patches()->length(); i++) {
777 HandleMark hm(THREAD);
778 Handle patch(THREAD, data_section_patches()->obj_at(i));
779 if (patch.is_null()) {
780 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
781 }
782 Handle reference(THREAD, site_DataPatch::reference(patch));
783 if (reference.is_null()) {
784 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
785 }
786 if (!reference->is_a(site_ConstantReference::klass())) {
787 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
788 }
789 Handle constant(THREAD, site_ConstantReference::constant(reference));
790 if (constant.is_null()) {
791 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
792 }
793 address dest = _constants->start() + site_Site::pcOffset(patch);
794 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
795 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
796 #ifdef _LP64
797 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK);
798 #else
799 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
800 #endif
801 } else {
802 *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK);
803 }
804 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
805 Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant));
806 jobject value = JNIHandles::make_local(obj());
807 int oop_index = _oop_recorder->find_index(value);
808
809 if (HotSpotObjectConstantImpl::compressed(constant)) {
810 #ifdef _LP64
811 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
812 #else
813 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
814 #endif
815 } else {
816 _constants->relocate(dest, oop_Relocation::spec(oop_index));
817 }
818 } else {
819 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
820 }
821 }
822 jint last_pc_offset = -1;
823 for (int i = 0; i < sites->length(); i++) {
824 HandleMark hm(THREAD);
825 Handle site(THREAD, sites->obj_at(i));
826 if (site.is_null()) {
827 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
828 }
829
830 jint pc_offset = site_Site::pcOffset(site);
831
832 if (site->is_a(site_Call::klass())) {
833 TRACE_jvmci_4("call at %i", pc_offset);
834 site_Call(buffer, pc_offset, site, CHECK_OK);
835 } else if (site->is_a(site_Infopoint::klass())) {
836 // three reasons for infopoints denote actual safepoints
837 oop reason = site_Infopoint::reason(site);
838 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) {
839 TRACE_jvmci_4("safepoint at %i", pc_offset);
840 site_Safepoint(buffer, pc_offset, site, CHECK_OK);
841 if (_orig_pc_offset < 0) {
842 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
843 }
844 } else {
845 TRACE_jvmci_4("infopoint at %i", pc_offset);
846 site_Infopoint(buffer, pc_offset, site, CHECK_OK);
847 }
848 } else if (site->is_a(site_DataPatch::klass())) {
849 TRACE_jvmci_4("datapatch at %i", pc_offset);
850 site_DataPatch(buffer, pc_offset, site, CHECK_OK);
851 } else if (site->is_a(site_Mark::klass())) {
852 TRACE_jvmci_4("mark at %i", pc_offset);
853 site_Mark(buffer, pc_offset, site, CHECK_OK);
854 } else if (site->is_a(site_ExceptionHandler::klass())) {
855 TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
856 site_ExceptionHandler(pc_offset, site);
857 } else {
858 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name());
859 }
860 last_pc_offset = pc_offset;
861
862 if (SafepointSynchronize::do_call_back()) {
863 // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
864 ThreadToNativeFromVM ttnfv(JavaThread::current());
865 }
866 }
867
868 #ifndef PRODUCT
869 if (comments() != NULL) {
870 for (int i = 0; i < comments()->length(); i++) {
871 oop comment = comments()->obj_at(i);
872 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce");
873 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment);
874 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment));
875 buffer.block_comment(offset, text);
876 }
877 }
878 #endif
879 return JVMCIEnv::ok;
880 }
881
882 void CodeInstaller::assumption_NoFinalizableSubclass(Thread* thread, Handle assumption) {
883 Handle receiverType_handle (thread, Assumptions_NoFinalizableSubclass::receiverType(assumption()));
884 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle));
885 _dependencies->assert_has_no_finalizable_subclasses(receiverType);
886 }
887
888 void CodeInstaller::assumption_ConcreteSubtype(Thread* thread, Handle assumption) {
889 Handle context_handle (thread, Assumptions_ConcreteSubtype::context(assumption()));
890 Handle subtype_handle (thread, Assumptions_ConcreteSubtype::subtype(assumption()));
891 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
892 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle));
893
894 assert(context->is_abstract(), "");
895 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
896 }
897
898 void CodeInstaller::assumption_LeafType(Thread* thread, Handle assumption) {
899 Handle context_handle (thread, Assumptions_LeafType::context(assumption()));
900 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
901
902 _dependencies->assert_leaf_type(context);
903 }
904
905 void CodeInstaller::assumption_ConcreteMethod(Thread* thread, Handle assumption) {
906 Handle impl_handle (thread, Assumptions_ConcreteMethod::impl(assumption()));
907 Handle context_handle (thread, Assumptions_ConcreteMethod::context(assumption()));
908
909 methodHandle impl = getMethodFromHotSpotMethod(impl_handle());
910 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
911
912 _dependencies->assert_unique_concrete_method(context, impl());
913 }
914
915 void CodeInstaller::assumption_CallSiteTargetValue(Thread* thread, Handle assumption) {
916 Handle callSite(thread, Assumptions_CallSiteTargetValue::callSite(assumption()));
917 Handle methodHandle(thread, Assumptions_CallSiteTargetValue::methodHandle(assumption()));
918
919 _dependencies->assert_call_site_target_value(callSite(), methodHandle());
920 }
921
922 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) {
923 jint handler_offset = site_ExceptionHandler::handlerPos(exc);
924
925 // Subtable header
926 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
927
928 // Subtable entry
929 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
930 }
931
932 // If deoptimization happens, the interpreter should reexecute these bytecodes.
933 // This function mainly helps the compilers to set up the reexecute bit.
934 static bool bytecode_should_reexecute(Bytecodes::Code code) {
935 switch (code) {
936 case Bytecodes::_invokedynamic:
937 case Bytecodes::_invokevirtual:
938 case Bytecodes::_invokeinterface:
939 case Bytecodes::_invokespecial:
940 case Bytecodes::_invokestatic:
941 return false;
942 default:
943 return true;
944 }
945 return true;
946 }
947
948 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) {
949 objArrayHandle virtualObjects(THREAD, DebugInfo::virtualObjectMapping(debug_info));
950 if (virtualObjects.is_null()) {
951 return NULL;
952 }
953 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL);
954 // Create the unique ObjectValues
955 for (int i = 0; i < virtualObjects->length(); i++) {
956 HandleMark hm(THREAD);
957 Handle value(THREAD, virtualObjects->obj_at(i));
958 int id = VirtualObject::id(value);
959 Handle type(THREAD, VirtualObject::type(value));
960 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
961 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror)));
962 if (id < 0 || id >= objects->length()) {
963 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
964 }
965 if (objects->at(id) != NULL) {
966 JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
967 }
968 objects->at_put(id, sv);
969 }
970 // All the values which could be referenced by the VirtualObjects
971 // exist, so now describe all the VirtualObjects themselves.
972 for (int i = 0; i < virtualObjects->length(); i++) {
973 HandleMark hm(THREAD);
974 Handle value(THREAD, virtualObjects->obj_at(i));
975 int id = VirtualObject::id(value);
976 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL);
977 }
978 _debug_recorder->dump_object_pool(objects);
979 return objects;
980 }
981
982 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, bool return_oop, TRAPS) {
983 Handle position(THREAD, DebugInfo::bytecodePosition(debug_info));
984 if (position.is_null()) {
985 // Stubs do not record scope info, just oop maps
986 return;
987 }
988
989 GrowableArray<ScopeValue*>* objectMapping;
990 if (scope_mode == CodeInstaller::FullFrame) {
991 objectMapping = record_virtual_objects(debug_info, CHECK);
992 } else {
993 objectMapping = NULL;
994 }
995 record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, CHECK);
996 }
997
998 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, TRAPS) {
999 Handle frame;
1000 if (scope_mode == CodeInstaller::FullFrame) {
1001 if (!position->is_a(BytecodeFrame::klass())) {
1002 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
1003 }
1004 frame = position;
1005 }
1006 Handle caller_frame (THREAD, BytecodePosition::caller(position));
1007 if (caller_frame.not_null()) {
1008 record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, CHECK);
1009 }
1010
1011 Handle hotspot_method (THREAD, BytecodePosition::method(position));
1012 Method* method = getMethodFromHotSpotMethod(hotspot_method());
1013 jint bci = BytecodePosition::bci(position);
1014 if (bci == BytecodeFrame::BEFORE_BCI()) {
1015 bci = SynchronizationEntryBCI;
1016 }
1017
1018 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
1019
1020 bool reexecute = false;
1021 if (frame.not_null()) {
1022 if (bci == SynchronizationEntryBCI){
1023 reexecute = false;
1024 } else {
1025 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
1026 reexecute = bytecode_should_reexecute(code);
1027 if (frame.not_null()) {
1028 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE);
1029 }
1030 }
1031 }
1032
1033 DebugToken* locals_token = NULL;
1034 DebugToken* expressions_token = NULL;
1035 DebugToken* monitors_token = NULL;
1036 bool throw_exception = false;
1037
1038 if (frame.not_null()) {
1039 jint local_count = BytecodeFrame::numLocals(frame);
1040 jint expression_count = BytecodeFrame::numStack(frame);
1041 jint monitor_count = BytecodeFrame::numLocks(frame);
1042 objArrayHandle values(THREAD, BytecodeFrame::values(frame));
1043 objArrayHandle slotKinds(THREAD, BytecodeFrame::slotKinds(frame));
1044
1045 if (values.is_null() || slotKinds.is_null()) {
1046 THROW(vmSymbols::java_lang_NullPointerException());
1047 }
1048 if (local_count + expression_count + monitor_count != values->length()) {
1049 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count);
1050 }
1051 if (local_count + expression_count != slotKinds->length()) {
1052 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count);
1053 }
1054
1055 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
1056 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
1057 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
1058
1059 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length());
1060 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
1061
1062 for (jint i = 0; i < values->length(); i++) {
1063 HandleMark hm(THREAD);
1064 ScopeValue* second = NULL;
1065 Handle value(THREAD, values->obj_at(i));
1066 if (i < local_count) {
1067 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1068 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1069 if (second != NULL) {
1070 locals->append(second);
1071 }
1072 locals->append(first);
1073 } else if (i < local_count + expression_count) {
1074 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1075 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1076 if (second != NULL) {
1077 expressions->append(second);
1078 }
1079 expressions->append(first);
1080 } else {
1081 MonitorValue *monitor = get_monitor_value(value, objects, CHECK);
1082 monitors->append(monitor);
1083 }
1084 if (second != NULL) {
1085 i++;
1086 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) {
1087 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
1088 }
1089 }
1090 }
1091
1092 locals_token = _debug_recorder->create_scope_values(locals);
1093 expressions_token = _debug_recorder->create_scope_values(expressions);
1094 monitors_token = _debug_recorder->create_monitor_values(monitors);
1095
1096 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE;
1097 }
1098
1099 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop,
1100 locals_token, expressions_token, monitors_token);
1101 }
1102
1103 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1104 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1105 if (debug_info.is_null()) {
1106 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1107 }
1108
1109 // address instruction = _instructions->start() + pc_offset;
1110 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1111 OopMap *map = create_oop_map(debug_info, CHECK);
1112 _debug_recorder->add_safepoint(pc_offset, map);
1113 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1114 _debug_recorder->end_safepoint(pc_offset);
1115 }
1116
1117 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1118 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1119 if (debug_info.is_null()) {
1120 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1121 }
1122
1123 // We'd like to check that pc_offset is greater than the
1124 // last pc recorded with _debug_recorder (raising an exception if not)
1125 // but DebugInformationRecorder doesn't have sufficient public API.
1126
1127 _debug_recorder->add_non_safepoint(pc_offset);
1128 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK);
1129 _debug_recorder->end_non_safepoint(pc_offset);
1130 }
1131
1132 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1133 Handle target(THREAD, site_Call::target(site));
1134 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
1135
1136 Handle hotspot_method; // JavaMethod
1137 Handle foreign_call;
1138
1139 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
1140 foreign_call = target;
1141 } else {
1142 hotspot_method = target;
1143 }
1144
1145 Handle debug_info (THREAD, site_Call::debugInfo(site));
1146
1147 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type");
1148
1149 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1150 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK);
1151
1152 if (debug_info.not_null()) {
1153 OopMap *map = create_oop_map(debug_info, CHECK);
1154 _debug_recorder->add_safepoint(next_pc_offset, map);
1155
1156 bool return_oop = hotspot_method.not_null() && getMethodFromHotSpotMethod(hotspot_method())->is_returning_oop();
1157
1158 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, CHECK);
1159 }
1160
1161 if (foreign_call.not_null()) {
1162 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call);
1163 if (_immutable_pic_compilation) {
1164 // Use fake short distance during PIC compilation.
1165 foreign_call_destination = (jlong)(_instructions->start() + pc_offset);
1166 }
1167 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK);
1168 } else { // method != NULL
1169 if (debug_info.is_null()) {
1170 JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1171 }
1172
1173 TRACE_jvmci_3("method call");
1174 CodeInstaller::pd_relocate_JavaMethod(hotspot_method, pc_offset, CHECK);
1175 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1176 // Need a static call stub for transitions from compiled to interpreted.
1177 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1178 }
1179 #if INCLUDE_AOT
1180 // Trampoline to far aot code.
1181 CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset);
1182 #endif
1183 }
1184
1185 _next_call_type = INVOKE_INVALID;
1186
1187 if (debug_info.not_null()) {
1188 _debug_recorder->end_safepoint(next_pc_offset);
1189 }
1190 }
1191
1192 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1193 Handle reference(THREAD, site_DataPatch::reference(site));
1194 if (reference.is_null()) {
1195 THROW(vmSymbols::java_lang_NullPointerException());
1196 } else if (reference->is_a(site_ConstantReference::klass())) {
1197 Handle constant(THREAD, site_ConstantReference::constant(reference));
1198 if (constant.is_null()) {
1199 THROW(vmSymbols::java_lang_NullPointerException());
1200 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
1201 if (!_immutable_pic_compilation) {
1202 // Do not patch during PIC compilation.
1203 pd_patch_OopConstant(pc_offset, constant, CHECK);
1204 }
1205 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
1206 if (!_immutable_pic_compilation) {
1207 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK);
1208 }
1209 } else if (constant->is_a(HotSpotSentinelConstant::klass())) {
1210 if (!_immutable_pic_compilation) {
1211 JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", constant->klass()->signature_name());
1212 }
1213 } else {
1214 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name());
1215 }
1216 } else if (reference->is_a(site_DataSectionReference::klass())) {
1217 int data_offset = site_DataSectionReference::offset(reference);
1218 if (0 <= data_offset && data_offset < _constants_size) {
1219 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK);
1220 } else {
1221 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1222 }
1223 } else {
1224 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name());
1225 }
1226 }
1227
1228 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1229 Handle id_obj (THREAD, site_Mark::id(site));
1230
1231 if (id_obj.not_null()) {
1232 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) {
1233 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name());
1234 }
1235 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
1236
1237 address pc = _instructions->start() + pc_offset;
1238
1239 switch (id) {
1240 case UNVERIFIED_ENTRY:
1241 _offsets.set_value(CodeOffsets::Entry, pc_offset);
1242 break;
1243 case VERIFIED_ENTRY:
1244 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1245 break;
1246 case OSR_ENTRY:
1247 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1248 break;
1249 case EXCEPTION_HANDLER_ENTRY:
1250 _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1251 break;
1252 case DEOPT_HANDLER_ENTRY:
1253 _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1254 break;
1255 case INVOKEVIRTUAL:
1256 case INVOKEINTERFACE:
1257 case INLINE_INVOKE:
1258 case INVOKESTATIC:
1259 case INVOKESPECIAL:
1260 _next_call_type = (MarkId) id;
1261 _invoke_mark_pc = pc;
1262 break;
1263 case POLL_NEAR:
1264 case POLL_FAR:
1265 case POLL_RETURN_NEAR:
1266 case POLL_RETURN_FAR:
1267 pd_relocate_poll(pc, id, CHECK);
1268 break;
1269 case CARD_TABLE_SHIFT:
1270 case CARD_TABLE_ADDRESS:
1271 case HEAP_TOP_ADDRESS:
1272 case HEAP_END_ADDRESS:
1273 case NARROW_KLASS_BASE_ADDRESS:
1274 case NARROW_OOP_BASE_ADDRESS:
1275 case CRC_TABLE_ADDRESS:
1276 case LOG_OF_HEAP_REGION_GRAIN_BYTES:
1277 case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED:
1278 break;
1279 default:
1280 JVMCI_ERROR("invalid mark id: %d", id);
1281 break;
1282 }
1283 }
1284 }
1285