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(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_strings = new GrowableArray<const char*>();
179 }
180
181 int AOTOopRecorder::nr_meta_strings() const {
182 return _meta_strings->length();
183 }
184
185 const char* AOTOopRecorder::meta_element(int pos) const {
186 return _meta_strings->at(pos);
187 }
188
189 int AOTOopRecorder::find_index(Metadata* h) {
190 int index = this->OopRecorder::find_index(h);
191
192 Klass* klass = NULL;
193 if (h->is_klass()) {
194 klass = (Klass*) h;
195 record_meta_string(klass->signature_name(), index);
196 } else if (h->is_method()) {
197 Method* method = (Method*) h;
198 // Need klass->signature_name() in method name
199 klass = method->method_holder();
200 const char* klass_name = klass->signature_name();
201 int klass_name_len = (int)strlen(klass_name);
202 Symbol* method_name = method->name();
203 Symbol* signature = method->signature();
204 int method_name_len = method_name->utf8_length();
205 int method_sign_len = signature->utf8_length();
206 int len = klass_name_len + 1 + method_name_len + method_sign_len;
207 char* dest = NEW_RESOURCE_ARRAY(char, len + 1);
208 strcpy(dest, klass_name);
209 dest[klass_name_len] = '.';
210 strcpy(&dest[klass_name_len + 1], method_name->as_C_string());
211 strcpy(&dest[klass_name_len + 1 + method_name_len], signature->as_C_string());
212 dest[len] = 0;
213 record_meta_string(dest, index);
214 }
215
216 return index;
217 }
218
219 int AOTOopRecorder::find_index(jobject h) {
220 if (h == NULL) {
221 return 0;
222 }
223 oop javaMirror = JNIHandles::resolve(h);
224 Klass* klass = java_lang_Class::as_Klass(javaMirror);
225 return find_index(klass);
226 }
227
228 void AOTOopRecorder::record_meta_string(const char* name, int index) {
229 assert(index > 0, "must be 1..n");
230 index -= 1; // reduce by one to convert to array index
231
232 if (index < _meta_strings->length()) {
233 assert(strcmp(name, _meta_strings->at(index)) == 0, "must match");
234 } else {
235 assert(index == _meta_strings->length(), "must be last");
236 _meta_strings->append(name);
237 }
238 }
239
240 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
241 /*
242 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
243 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
244 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
245 * base class (Metadata* or MetaspaceObj*).
246 */
247 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
248 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
249 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
250 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
251 int index = _oop_recorder->find_index(klass);
252 section->relocate(dest, metadata_Relocation::spec(index));
253 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
254 return klass;
255 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
256 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
257 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
258 int index = _oop_recorder->find_index(method);
259 section->relocate(dest, metadata_Relocation::spec(index));
260 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
261 return method;
262 } else {
263 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
264 }
265 }
266
267 #ifdef _LP64
268 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
269 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
270 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
271
272 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
273 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
274 }
275
276 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
277 int index = _oop_recorder->find_index(klass);
278 section->relocate(dest, metadata_Relocation::spec(index));
279 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
280 return Klass::encode_klass(klass);
281 }
282 #endif
283
284 Location::Type CodeInstaller::get_oop_type(Thread* thread, Handle value) {
285 Handle valueKind(thread, Value::valueKind(value));
286 Handle platformKind(thread, ValueKind::platformKind(valueKind));
287
288 if (platformKind == word_kind()) {
289 return Location::oop;
290 } else {
291 return Location::narrowoop;
292 }
293 }
294
295 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
296 second = NULL;
297 if (value.is_null()) {
298 THROW_NULL(vmSymbols::java_lang_NullPointerException());
299 } else if (value == Value::ILLEGAL()) {
300 if (type != T_ILLEGAL) {
301 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
302 }
303 return _illegal_value;
304 } else if (value->is_a(RegisterValue::klass())) {
305 Handle reg(THREAD, RegisterValue::reg(value));
306 jint number = code_Register::number(reg);
307 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL);
308 if (is_general_purpose_reg(hotspotRegister)) {
309 Location::Type locationType;
310 if (type == T_OBJECT) {
311 locationType = get_oop_type(THREAD, value);
312 } else if (type == T_LONG) {
313 locationType = Location::lng;
314 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
315 locationType = Location::int_in_long;
316 } else {
317 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
318 }
319 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
320 if (type == T_LONG) {
321 second = value;
322 }
323 return value;
324 } else {
325 Location::Type locationType;
326 if (type == T_FLOAT) {
327 // this seems weird, but the same value is used in c1_LinearScan
328 locationType = Location::normal;
329 } else if (type == T_DOUBLE) {
330 locationType = Location::dbl;
331 } else {
332 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
333 }
334 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
335 if (type == T_DOUBLE) {
336 second = value;
337 }
338 return value;
339 }
340 } else if (value->is_a(StackSlot::klass())) {
341 jint offset = StackSlot::offset(value);
342 if (StackSlot::addFrameSize(value)) {
343 offset += _total_frame_size;
344 }
345
346 Location::Type locationType;
347 if (type == T_OBJECT) {
348 locationType = get_oop_type(THREAD, value);
349 } else if (type == T_LONG) {
350 locationType = Location::lng;
351 } else if (type == T_DOUBLE) {
352 locationType = Location::dbl;
353 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
354 locationType = Location::normal;
355 } else {
356 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
357 }
358 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
359 if (type == T_DOUBLE || type == T_LONG) {
360 second = value;
361 }
362 return value;
363 } else if (value->is_a(JavaConstant::klass())) {
364 if (value->is_a(PrimitiveConstant::klass())) {
365 if (value->is_a(RawConstant::klass())) {
366 jlong prim = PrimitiveConstant::primitive(value);
367 return new ConstantLongValue(prim);
368 } else {
369 Handle primitive_constant_kind(THREAD, PrimitiveConstant::kind(value));
370 BasicType constantType = JVMCIRuntime::kindToBasicType(primitive_constant_kind, CHECK_NULL);
371 if (type != constantType) {
372 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
373 }
374 if (type == T_INT || type == T_FLOAT) {
375 jint prim = (jint)PrimitiveConstant::primitive(value);
376 switch (prim) {
377 case -1: return _int_m1_scope_value;
378 case 0: return _int_0_scope_value;
379 case 1: return _int_1_scope_value;
380 case 2: return _int_2_scope_value;
381 default: return new ConstantIntValue(prim);
382 }
383 } else if (type == T_LONG || type == T_DOUBLE) {
384 jlong prim = PrimitiveConstant::primitive(value);
385 second = _int_1_scope_value;
386 return new ConstantLongValue(prim);
387 } else {
388 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
389 }
390 }
391 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) {
392 if (type == T_OBJECT) {
393 return _oop_null_scope_value;
394 } else {
395 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
396 }
397 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) {
398 if (type == T_OBJECT) {
399 oop obj = HotSpotObjectConstantImpl::object(value);
400 if (obj == NULL) {
401 JVMCI_ERROR_NULL("null value must be in NullConstant");
402 }
403 return new ConstantOopWriteValue(JNIHandles::make_local(obj));
404 } else {
405 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
406 }
407 }
408 } else if (value->is_a(VirtualObject::klass())) {
409 if (type == T_OBJECT) {
410 int id = VirtualObject::id(value);
411 if (0 <= id && id < objects->length()) {
412 ScopeValue* object = objects->at(id);
413 if (object != NULL) {
414 return object;
415 }
416 }
417 JVMCI_ERROR_NULL("unknown virtual object id %d", id);
418 } else {
419 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
420 }
421 }
422
423 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name())
424 }
425
426 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
427 // Might want a HandleMark here.
428 Handle type(THREAD, VirtualObject::type(value));
429 int id = VirtualObject::id(value);
430 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
431 Klass* klass = java_lang_Class::as_Klass(javaMirror);
432 bool isLongArray = klass == Universe::longArrayKlassObj();
433
434 objArrayHandle values(THREAD, VirtualObject::values(value));
435 objArrayHandle slotKinds(THREAD, VirtualObject::slotKinds(value));
436 for (jint i = 0; i < values->length(); i++) {
437 HandleMark hm(THREAD);
438 ScopeValue* cur_second = NULL;
439 Handle object(THREAD, values->obj_at(i));
440 Handle slot_kind (THREAD, slotKinds->obj_at(i));
441 BasicType type = JVMCIRuntime::kindToBasicType(slot_kind, CHECK);
442 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK);
443
444 if (isLongArray && cur_second == NULL) {
445 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
446 // add an int 0 constant
447 cur_second = _int_0_scope_value;
448 }
449
450 if (cur_second != NULL) {
451 sv->field_values()->append(cur_second);
452 }
453 assert(value != NULL, "missing value");
454 sv->field_values()->append(value);
455 }
456 }
457
458 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
459 if (value.is_null()) {
460 THROW_NULL(vmSymbols::java_lang_NullPointerException());
461 }
462 if (!value->is_a(StackLockValue::klass())) {
463 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name());
464 }
465
466 ScopeValue* second = NULL;
467 Handle stack_lock_owner(THREAD, StackLockValue::owner(value));
468 ScopeValue* owner_value = get_scope_value(stack_lock_owner, T_OBJECT, objects, second, CHECK_NULL);
469 assert(second == NULL, "monitor cannot occupy two stack slots");
470
471 Handle stack_lock_slot(THREAD, StackLockValue::slot(value));
472 ScopeValue* lock_data_value = get_scope_value(stack_lock_slot, T_LONG, objects, second, CHECK_NULL);
473 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
474 assert(lock_data_value->is_location(), "invalid monitor location");
475 Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
476
477 bool eliminated = false;
478 if (StackLockValue::eliminated(value)) {
479 eliminated = true;
480 }
481
482 return new MonitorValue(owner_value, lock_data_loc, eliminated);
483 }
484
485 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) {
486 JavaThread* thread = JavaThread::current();
487 assert(THREAD == thread, "");
488 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
489 _oop_recorder = recorder;
490 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
491 objArrayHandle assumptions(THREAD, HotSpotCompiledCode::assumptions(compiled_code));
492 if (!assumptions.is_null()) {
493 int length = assumptions->length();
494 for (int i = 0; i < length; ++i) {
495 Handle assumption(THREAD, assumptions->obj_at(i));
496 if (!assumption.is_null()) {
497 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) {
498 assumption_NoFinalizableSubclass(THREAD, assumption);
499 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) {
500 assumption_ConcreteSubtype(THREAD, assumption);
501 } else if (assumption->klass() == Assumptions_LeafType::klass()) {
502 assumption_LeafType(THREAD, assumption);
503 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) {
504 assumption_ConcreteMethod(THREAD, assumption);
505 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) {
506 assumption_CallSiteTargetValue(THREAD, assumption);
507 } else {
508 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name());
509 }
510 }
511 }
512 }
513 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
514 objArrayHandle methods(THREAD, HotSpotCompiledCode::methods(compiled_code));
515 if (!methods.is_null()) {
516 int length = methods->length();
517 for (int i = 0; i < length; ++i) {
518 Handle method_handle(THREAD, methods->obj_at(i));
519 methodHandle method = getMethodFromHotSpotMethod(method_handle());
520 _dependencies->assert_evol_method(method());
521 }
522 }
523 }
524 }
525
526 RelocBuffer::~RelocBuffer() {
527 if (_buffer != NULL) {
528 FREE_C_HEAP_ARRAY(char, _buffer);
529 }
530 }
531
532 address RelocBuffer::begin() const {
533 if (_buffer != NULL) {
534 return (address) _buffer;
535 }
536 return (address) _static_buffer;
537 }
538
539 void RelocBuffer::set_size(size_t bytes) {
540 assert(bytes <= _size, "can't grow in size!");
541 _size = bytes;
542 }
543
544 void RelocBuffer::ensure_size(size_t bytes) {
545 assert(_buffer == NULL, "can only be used once");
546 assert(_size == 0, "can only be used once");
547 if (bytes >= RelocBuffer::stack_size) {
548 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal);
549 }
550 _size = bytes;
551 }
552
553 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) {
554 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
555 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
556 AOTOopRecorder* recorder = new AOTOopRecorder(&_arena, true);
557 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
558
559 metadata.set_oop_recorder(recorder);
560
561 // Get instructions and constants CodeSections early because we need it.
562 _instructions = buffer.insts();
563 _constants = buffer.consts();
564
565 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
566 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, false, CHECK_OK);
567 if (result != JVMCIEnv::ok) {
568 return result;
569 }
570
571 _debug_recorder->pcs_size(); // create the sentinel record
572
573 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
574
575 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
576 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
577 metadata.set_exception_table(&_exception_handler_table);
578
579 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
580
581 reloc_buffer->ensure_size(buffer.total_relocation_size());
582 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
583 reloc_buffer->set_size(size);
584 return JVMCIEnv::ok;
585 }
586
587 // constructor used to create a method
588 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) {
589 CodeBuffer buffer("JVMCI Compiler CodeBuffer");
590 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
591 OopRecorder* recorder = new OopRecorder(&_arena, true);
592 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
593
594 // Get instructions and constants CodeSections early because we need it.
595 _instructions = buffer.insts();
596 _constants = buffer.consts();
597
598 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
599 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, true, CHECK_OK);
600 if (result != JVMCIEnv::ok) {
601 return result;
602 }
603
604 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
605
606 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
607 oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
608 char* name = strdup(java_lang_String::as_utf8_string(stubName));
609 cb = RuntimeStub::new_runtime_stub(name,
610 &buffer,
611 CodeOffsets::frame_never_safe,
612 stack_slots,
613 _debug_recorder->_oopmaps,
614 false);
615 result = JVMCIEnv::ok;
616 } else {
617 nmethod* nm = NULL;
618 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code));
619 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code);
620 jint id = HotSpotCompiledNmethod::id(compiled_code);
621 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE;
622 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code);
623 if (id == -1) {
624 // Make sure a valid compile_id is associated with every compile
625 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
626 }
627 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
628 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table,
629 compiler, _debug_recorder, _dependencies, env, id,
630 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log);
631 cb = nm->as_codeblob_or_null();
632 if (nm != NULL && env == NULL) {
633 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
634 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
635 if (!printnmethods && (PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers)) {
636 nm->print_nmethod(printnmethods);
637 }
638 DirectivesStack::release(directive);
639 }
640 }
641
642 if (cb != NULL) {
643 // Make sure the pre-calculated constants section size was correct.
644 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
645 }
646 return result;
647 }
648
649 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) {
650 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
651 Handle hotspotJavaMethod(THREAD, HotSpotCompiledNmethod::method(compiled_code));
652 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod());
653 _parameter_count = method->size_of_parameters();
654 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
655 } else {
656 // Must be a HotSpotCompiledRuntimeStub.
657 // Only used in OopMap constructor for non-product builds
658 _parameter_count = 0;
659 }
660 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code));
661
662 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code));
663 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code);
664 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code);
665
666 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code);
667 if (deoptRescueSlot == NULL) {
668 _orig_pc_offset = -1;
669 } else {
670 _orig_pc_offset = StackSlot::offset(deoptRescueSlot);
671 if (StackSlot::addFrameSize(deoptRescueSlot)) {
672 _orig_pc_offset += _total_frame_size;
673 }
674 if (_orig_pc_offset < 0) {
675 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
676 }
677 }
678
679 // Pre-calculate the constants section size. This is required for PC-relative addressing.
680 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code));
681 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) {
682 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code));
683 }
684 _constants_size = data_section()->length();
685
686 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code));
687
688 #ifndef PRODUCT
689 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code));
690 #endif
691
692 _next_call_type = INVOKE_INVALID;
693
694 _has_wide_vector = false;
695
696 oop arch = TargetDescription::arch(target);
697 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch));
698 }
699
700 int CodeInstaller::estimate_stubs_size(TRAPS) {
701 // Estimate the number of static and aot call stubs that might be emitted.
702 int static_call_stubs = 0;
703 int aot_call_stubs = 0;
704 objArrayOop sites = this->sites();
705 for (int i = 0; i < sites->length(); i++) {
706 oop site = sites->obj_at(i);
707 if (site != NULL) {
708 if (site->is_a(site_Mark::klass())) {
709 oop id_obj = site_Mark::id(site);
710 if (id_obj != NULL) {
711 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) {
712 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name());
713 }
714 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
715 if (id == INVOKESTATIC || id == INVOKESPECIAL) {
716 static_call_stubs++;
717 }
718 }
719 }
720 if (UseAOT && site->is_a(site_Call::klass())) {
721 oop target = site_Call::target(site);
722 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
723 if (!target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
724 // Add far aot trampolines.
725 aot_call_stubs++;
726 }
727 }
728 }
729 }
730 int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size();
731 #if INCLUDE_AOT
732 size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size();
733 #endif
734 return size;
735 }
736
737 // perform data and call relocation on the CodeBuffer
738 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, TRAPS) {
739 HandleMark hm;
740 objArrayHandle sites(THREAD, this->sites());
741 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo));
742
743 // Allocate enough space in the stub section for the static call
744 // stubs. Stubs have extra relocs but they are managed by the stub
745 // section itself so they don't need to be accounted for in the
746 // locs_buffer above.
747 int stubs_size = estimate_stubs_size(CHECK_OK);
748 int total_size = align_up(_code_size, buffer.insts()->alignment()) + align_up(_constants_size, buffer.consts()->alignment()) + align_up(stubs_size, buffer.stubs()->alignment());
749
750 if (check_size && total_size > JVMCINMethodSizeLimit) {
751 return JVMCIEnv::code_too_large;
752 }
753
754 buffer.initialize(total_size, locs_buffer_size);
755 if (buffer.blob() == NULL) {
756 return JVMCIEnv::cache_full;
757 }
758 buffer.initialize_stubs_size(stubs_size);
759 buffer.initialize_consts_size(_constants_size);
760
761 _debug_recorder = new DebugInformationRecorder(_oop_recorder);
762 _debug_recorder->set_oopmaps(new OopMapSet());
763
764 buffer.initialize_oop_recorder(_oop_recorder);
765
766 // copy the constant data into the newly created CodeBuffer
767 address end_data = _constants->start() + _constants_size;
768 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size);
769 _constants->set_end(end_data);
770
771 // copy the code into the newly created CodeBuffer
772 address end_pc = _instructions->start() + _code_size;
773 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
774 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size);
775 _instructions->set_end(end_pc);
776
777 for (int i = 0; i < data_section_patches()->length(); i++) {
778 HandleMark hm(THREAD);
779 Handle patch(THREAD, data_section_patches()->obj_at(i));
780 if (patch.is_null()) {
781 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
782 }
783 Handle reference(THREAD, site_DataPatch::reference(patch));
784 if (reference.is_null()) {
785 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
786 }
787 if (!reference->is_a(site_ConstantReference::klass())) {
788 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
789 }
790 Handle constant(THREAD, site_ConstantReference::constant(reference));
791 if (constant.is_null()) {
792 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
793 }
794 address dest = _constants->start() + site_Site::pcOffset(patch);
795 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
796 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
797 #ifdef _LP64
798 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK);
799 #else
800 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
801 #endif
802 } else {
803 *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK);
804 }
805 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
806 Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant));
807 jobject value = JNIHandles::make_local(obj());
808 int oop_index = _oop_recorder->find_index(value);
809
810 if (HotSpotObjectConstantImpl::compressed(constant)) {
811 #ifdef _LP64
812 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
813 #else
814 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
815 #endif
816 } else {
817 _constants->relocate(dest, oop_Relocation::spec(oop_index));
818 }
819 } else {
820 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
821 }
822 }
823 jint last_pc_offset = -1;
824 for (int i = 0; i < sites->length(); i++) {
825 HandleMark hm(THREAD);
826 Handle site(THREAD, sites->obj_at(i));
827 if (site.is_null()) {
828 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
829 }
830
831 jint pc_offset = site_Site::pcOffset(site);
832
833 if (site->is_a(site_Call::klass())) {
834 TRACE_jvmci_4("call at %i", pc_offset);
835 site_Call(buffer, pc_offset, site, CHECK_OK);
836 } else if (site->is_a(site_Infopoint::klass())) {
837 // three reasons for infopoints denote actual safepoints
838 oop reason = site_Infopoint::reason(site);
839 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) {
840 TRACE_jvmci_4("safepoint at %i", pc_offset);
841 site_Safepoint(buffer, pc_offset, site, CHECK_OK);
842 if (_orig_pc_offset < 0) {
843 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
844 }
845 } else {
846 TRACE_jvmci_4("infopoint at %i", pc_offset);
847 site_Infopoint(buffer, pc_offset, site, CHECK_OK);
848 }
849 } else if (site->is_a(site_DataPatch::klass())) {
850 TRACE_jvmci_4("datapatch at %i", pc_offset);
851 site_DataPatch(buffer, pc_offset, site, CHECK_OK);
852 } else if (site->is_a(site_Mark::klass())) {
853 TRACE_jvmci_4("mark at %i", pc_offset);
854 site_Mark(buffer, pc_offset, site, CHECK_OK);
855 } else if (site->is_a(site_ExceptionHandler::klass())) {
856 TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
857 site_ExceptionHandler(pc_offset, site);
858 } else {
859 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name());
860 }
861 last_pc_offset = pc_offset;
862
863 if (SafepointMechanism::poll()) {
864 // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
865 ThreadToNativeFromVM ttnfv(JavaThread::current());
866 }
867 }
868
869 #ifndef PRODUCT
870 if (comments() != NULL) {
871 for (int i = 0; i < comments()->length(); i++) {
872 oop comment = comments()->obj_at(i);
873 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce");
874 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment);
875 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment));
876 buffer.block_comment(offset, text);
877 }
878 }
879 #endif
880 return JVMCIEnv::ok;
881 }
882
883 void CodeInstaller::assumption_NoFinalizableSubclass(Thread* thread, Handle assumption) {
884 Handle receiverType_handle (thread, Assumptions_NoFinalizableSubclass::receiverType(assumption()));
885 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle));
886 _dependencies->assert_has_no_finalizable_subclasses(receiverType);
887 }
888
889 void CodeInstaller::assumption_ConcreteSubtype(Thread* thread, Handle assumption) {
890 Handle context_handle (thread, Assumptions_ConcreteSubtype::context(assumption()));
891 Handle subtype_handle (thread, Assumptions_ConcreteSubtype::subtype(assumption()));
892 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
893 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle));
894
895 assert(context->is_abstract(), "");
896 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
897 }
898
899 void CodeInstaller::assumption_LeafType(Thread* thread, Handle assumption) {
900 Handle context_handle (thread, Assumptions_LeafType::context(assumption()));
901 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
902
903 _dependencies->assert_leaf_type(context);
904 }
905
906 void CodeInstaller::assumption_ConcreteMethod(Thread* thread, Handle assumption) {
907 Handle impl_handle (thread, Assumptions_ConcreteMethod::impl(assumption()));
908 Handle context_handle (thread, Assumptions_ConcreteMethod::context(assumption()));
909
910 methodHandle impl = getMethodFromHotSpotMethod(impl_handle());
911 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
912
913 _dependencies->assert_unique_concrete_method(context, impl());
914 }
915
916 void CodeInstaller::assumption_CallSiteTargetValue(Thread* thread, Handle assumption) {
917 Handle callSite(thread, Assumptions_CallSiteTargetValue::callSite(assumption()));
918 Handle methodHandle(thread, Assumptions_CallSiteTargetValue::methodHandle(assumption()));
919
920 _dependencies->assert_call_site_target_value(callSite(), methodHandle());
921 }
922
923 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) {
924 jint handler_offset = site_ExceptionHandler::handlerPos(exc);
925
926 // Subtable header
927 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
928
929 // Subtable entry
930 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
931 }
932
933 // If deoptimization happens, the interpreter should reexecute these bytecodes.
934 // This function mainly helps the compilers to set up the reexecute bit.
935 static bool bytecode_should_reexecute(Bytecodes::Code code) {
936 switch (code) {
937 case Bytecodes::_invokedynamic:
938 case Bytecodes::_invokevirtual:
939 case Bytecodes::_invokeinterface:
940 case Bytecodes::_invokespecial:
941 case Bytecodes::_invokestatic:
942 return false;
943 default:
944 return true;
945 }
946 return true;
947 }
948
949 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) {
950 objArrayHandle virtualObjects(THREAD, DebugInfo::virtualObjectMapping(debug_info));
951 if (virtualObjects.is_null()) {
952 return NULL;
953 }
954 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL);
955 // Create the unique ObjectValues
956 for (int i = 0; i < virtualObjects->length(); i++) {
957 HandleMark hm(THREAD);
958 Handle value(THREAD, virtualObjects->obj_at(i));
959 int id = VirtualObject::id(value);
960 Handle type(THREAD, VirtualObject::type(value));
961 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
962 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror)));
963 if (id < 0 || id >= objects->length()) {
964 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
965 }
966 if (objects->at(id) != NULL) {
967 JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
968 }
969 objects->at_put(id, sv);
970 }
971 // All the values which could be referenced by the VirtualObjects
972 // exist, so now describe all the VirtualObjects themselves.
973 for (int i = 0; i < virtualObjects->length(); i++) {
974 HandleMark hm(THREAD);
975 Handle value(THREAD, virtualObjects->obj_at(i));
976 int id = VirtualObject::id(value);
977 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL);
978 }
979 _debug_recorder->dump_object_pool(objects);
980 return objects;
981 }
982
983 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, bool return_oop, TRAPS) {
984 Handle position(THREAD, DebugInfo::bytecodePosition(debug_info));
985 if (position.is_null()) {
986 // Stubs do not record scope info, just oop maps
987 return;
988 }
989
990 GrowableArray<ScopeValue*>* objectMapping;
991 if (scope_mode == CodeInstaller::FullFrame) {
992 objectMapping = record_virtual_objects(debug_info, CHECK);
993 } else {
994 objectMapping = NULL;
995 }
996 record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, CHECK);
997 }
998
999 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, TRAPS) {
1000 Handle frame;
1001 if (scope_mode == CodeInstaller::FullFrame) {
1002 if (!position->is_a(BytecodeFrame::klass())) {
1003 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
1004 }
1005 frame = position;
1006 }
1007 Handle caller_frame (THREAD, BytecodePosition::caller(position));
1008 if (caller_frame.not_null()) {
1009 record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, CHECK);
1010 }
1011
1012 Handle hotspot_method (THREAD, BytecodePosition::method(position));
1013 Method* method = getMethodFromHotSpotMethod(hotspot_method());
1014 jint bci = BytecodePosition::bci(position);
1015 if (bci == BytecodeFrame::BEFORE_BCI()) {
1016 bci = SynchronizationEntryBCI;
1017 }
1018
1019 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
1020
1021 bool reexecute = false;
1022 if (frame.not_null()) {
1023 if (bci == SynchronizationEntryBCI){
1024 reexecute = false;
1025 } else {
1026 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
1027 reexecute = bytecode_should_reexecute(code);
1028 if (frame.not_null()) {
1029 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE);
1030 }
1031 }
1032 }
1033
1034 DebugToken* locals_token = NULL;
1035 DebugToken* expressions_token = NULL;
1036 DebugToken* monitors_token = NULL;
1037 bool throw_exception = false;
1038
1039 if (frame.not_null()) {
1040 jint local_count = BytecodeFrame::numLocals(frame);
1041 jint expression_count = BytecodeFrame::numStack(frame);
1042 jint monitor_count = BytecodeFrame::numLocks(frame);
1043 objArrayHandle values(THREAD, BytecodeFrame::values(frame));
1044 objArrayHandle slotKinds(THREAD, BytecodeFrame::slotKinds(frame));
1045
1046 if (values.is_null() || slotKinds.is_null()) {
1047 THROW(vmSymbols::java_lang_NullPointerException());
1048 }
1049 if (local_count + expression_count + monitor_count != values->length()) {
1050 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count);
1051 }
1052 if (local_count + expression_count != slotKinds->length()) {
1053 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count);
1054 }
1055
1056 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
1057 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
1058 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
1059
1060 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length());
1061 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
1062
1063 for (jint i = 0; i < values->length(); i++) {
1064 HandleMark hm(THREAD);
1065 ScopeValue* second = NULL;
1066 Handle value(THREAD, values->obj_at(i));
1067 if (i < local_count) {
1068 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1069 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1070 if (second != NULL) {
1071 locals->append(second);
1072 }
1073 locals->append(first);
1074 } else if (i < local_count + expression_count) {
1075 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK);
1076 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1077 if (second != NULL) {
1078 expressions->append(second);
1079 }
1080 expressions->append(first);
1081 } else {
1082 MonitorValue *monitor = get_monitor_value(value, objects, CHECK);
1083 monitors->append(monitor);
1084 }
1085 if (second != NULL) {
1086 i++;
1087 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) {
1088 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
1089 }
1090 }
1091 }
1092
1093 locals_token = _debug_recorder->create_scope_values(locals);
1094 expressions_token = _debug_recorder->create_scope_values(expressions);
1095 monitors_token = _debug_recorder->create_monitor_values(monitors);
1096
1097 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE;
1098 }
1099
1100 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop,
1101 locals_token, expressions_token, monitors_token);
1102 }
1103
1104 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1105 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1106 if (debug_info.is_null()) {
1107 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1108 }
1109
1110 // address instruction = _instructions->start() + pc_offset;
1111 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1112 OopMap *map = create_oop_map(debug_info, CHECK);
1113 _debug_recorder->add_safepoint(pc_offset, map);
1114 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1115 _debug_recorder->end_safepoint(pc_offset);
1116 }
1117
1118 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1119 Handle debug_info (THREAD, site_Infopoint::debugInfo(site));
1120 if (debug_info.is_null()) {
1121 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1122 }
1123
1124 // We'd like to check that pc_offset is greater than the
1125 // last pc recorded with _debug_recorder (raising an exception if not)
1126 // but DebugInformationRecorder doesn't have sufficient public API.
1127
1128 _debug_recorder->add_non_safepoint(pc_offset);
1129 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK);
1130 _debug_recorder->end_non_safepoint(pc_offset);
1131 }
1132
1133 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1134 Handle target(THREAD, site_Call::target(site));
1135 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
1136
1137 Handle hotspot_method; // JavaMethod
1138 Handle foreign_call;
1139
1140 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
1141 foreign_call = target;
1142 } else {
1143 hotspot_method = target;
1144 }
1145
1146 Handle debug_info (THREAD, site_Call::debugInfo(site));
1147
1148 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type");
1149
1150 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1151 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK);
1152
1153 if (debug_info.not_null()) {
1154 OopMap *map = create_oop_map(debug_info, CHECK);
1155 _debug_recorder->add_safepoint(next_pc_offset, map);
1156
1157 bool return_oop = hotspot_method.not_null() && getMethodFromHotSpotMethod(hotspot_method())->is_returning_oop();
1158
1159 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, CHECK);
1160 }
1161
1162 if (foreign_call.not_null()) {
1163 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call);
1164 if (_immutable_pic_compilation) {
1165 // Use fake short distance during PIC compilation.
1166 foreign_call_destination = (jlong)(_instructions->start() + pc_offset);
1167 }
1168 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK);
1169 } else { // method != NULL
1170 if (debug_info.is_null()) {
1171 JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1172 }
1173
1174 TRACE_jvmci_3("method call");
1175 CodeInstaller::pd_relocate_JavaMethod(hotspot_method, pc_offset, CHECK);
1176 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1177 // Need a static call stub for transitions from compiled to interpreted.
1178 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1179 }
1180 #if INCLUDE_AOT
1181 // Trampoline to far aot code.
1182 CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset);
1183 #endif
1184 }
1185
1186 _next_call_type = INVOKE_INVALID;
1187
1188 if (debug_info.not_null()) {
1189 _debug_recorder->end_safepoint(next_pc_offset);
1190 }
1191 }
1192
1193 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1194 Handle reference(THREAD, site_DataPatch::reference(site));
1195 if (reference.is_null()) {
1196 THROW(vmSymbols::java_lang_NullPointerException());
1197 } else if (reference->is_a(site_ConstantReference::klass())) {
1198 Handle constant(THREAD, site_ConstantReference::constant(reference));
1199 if (constant.is_null()) {
1200 THROW(vmSymbols::java_lang_NullPointerException());
1201 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
1202 if (!_immutable_pic_compilation) {
1203 // Do not patch during PIC compilation.
1204 pd_patch_OopConstant(pc_offset, constant, CHECK);
1205 }
1206 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
1207 if (!_immutable_pic_compilation) {
1208 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK);
1209 }
1210 } else if (constant->is_a(HotSpotSentinelConstant::klass())) {
1211 if (!_immutable_pic_compilation) {
1212 JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", constant->klass()->signature_name());
1213 }
1214 } else {
1215 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name());
1216 }
1217 } else if (reference->is_a(site_DataSectionReference::klass())) {
1218 int data_offset = site_DataSectionReference::offset(reference);
1219 if (0 <= data_offset && data_offset < _constants_size) {
1220 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK);
1221 } else {
1222 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1223 }
1224 } else {
1225 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name());
1226 }
1227 }
1228
1229 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1230 Handle id_obj (THREAD, site_Mark::id(site));
1231
1232 if (id_obj.not_null()) {
1233 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) {
1234 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name());
1235 }
1236 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
1237
1238 address pc = _instructions->start() + pc_offset;
1239
1240 switch (id) {
1241 case UNVERIFIED_ENTRY:
1242 _offsets.set_value(CodeOffsets::Entry, pc_offset);
1243 break;
1244 case VERIFIED_ENTRY:
1245 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1246 break;
1247 case OSR_ENTRY:
1248 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1249 break;
1250 case EXCEPTION_HANDLER_ENTRY:
1251 _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1252 break;
1253 case DEOPT_HANDLER_ENTRY:
1254 _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1255 break;
1256 case INVOKEVIRTUAL:
1257 case INVOKEINTERFACE:
1258 case INLINE_INVOKE:
1259 case INVOKESTATIC:
1260 case INVOKESPECIAL:
1261 _next_call_type = (MarkId) id;
1262 _invoke_mark_pc = pc;
1263 break;
1264 case POLL_NEAR:
1265 case POLL_FAR:
1266 case POLL_RETURN_NEAR:
1267 case POLL_RETURN_FAR:
1268 pd_relocate_poll(pc, id, CHECK);
1269 break;
1270 case CARD_TABLE_SHIFT:
1271 case CARD_TABLE_ADDRESS:
1272 case HEAP_TOP_ADDRESS:
1273 case HEAP_END_ADDRESS:
1274 case NARROW_KLASS_BASE_ADDRESS:
1275 case NARROW_OOP_BASE_ADDRESS:
1276 case CRC_TABLE_ADDRESS:
1277 case LOG_OF_HEAP_REGION_GRAIN_BYTES:
1278 case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED:
1279 break;
1280 default:
1281 JVMCI_ERROR("invalid mark id: %d", id);
1282 break;
1283 }
1284 }
1285 }
1286