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