1 /*
2 * Copyright (c) 2011, 2016, 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
41 // frequently used constants
42 // Allocate them with new so they are never destroyed (otherwise, a
43 // forced exit could destroy these objects while they are still in
44 // use).
45 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL);
46 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1);
47 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(0);
48 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1);
49 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2);
50 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location());
51
52 Method* getMethodFromHotSpotMethod(oop hotspot_method) {
53 assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity");
54 return CompilerToVM::asMethod(hotspot_method);
55 }
56
57 VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) {
58 if (location.is_null()) {
59 THROW_NULL(vmSymbols::java_lang_NullPointerException());
60 }
61
62 Handle reg = code_Location::reg(location);
63 jint offset = code_Location::offset(location);
64
65 if (reg.not_null()) {
66 // register
67 jint number = code_Register::number(reg);
68 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL);
69 if (offset % 4 == 0) {
70 return vmReg->next(offset / 4);
71 } else {
72 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset);
73 }
74 } else {
75 // stack slot
76 if (offset % 4 == 0) {
77 VMReg vmReg = VMRegImpl::stack2reg(offset / 4);
78 if (!OopMapValue::legal_vm_reg_name(vmReg)) {
79 // This restriction only applies to VMRegs that are used in OopMap but
80 // since that's the only use of VMRegs it's simplest to put this test
81 // here. This test should also be equivalent legal_vm_reg_name but JVMCI
82 // clients can use max_oop_map_stack_stack_offset to detect this problem
83 // directly. The asserts just ensure that the tests are in agreement.
84 assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg");
85 JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)",
86 offset, CompilerToVM::Data::max_oop_map_stack_offset());
87 }
88 assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg");
89 return vmReg;
90 } else {
91 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
92 }
93 }
94 }
95
96 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo
97 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) {
98 Handle reference_map = DebugInfo::referenceMap(debug_info);
99 if (reference_map.is_null()) {
100 THROW_NULL(vmSymbols::java_lang_NullPointerException());
101 }
102 if (!reference_map->is_a(HotSpotReferenceMap::klass())) {
103 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name());
104 }
105 if (HotSpotReferenceMap::maxRegisterSize(reference_map) > 16) {
106 _has_wide_vector = true;
107 }
108 OopMap* map = new OopMap(_total_frame_size, _parameter_count);
109 objArrayHandle objects = HotSpotReferenceMap::objects(reference_map);
110 objArrayHandle derivedBase = HotSpotReferenceMap::derivedBase(reference_map);
111 typeArrayHandle sizeInBytes = HotSpotReferenceMap::sizeInBytes(reference_map);
112 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
113 THROW_NULL(vmSymbols::java_lang_NullPointerException());
114 }
115 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) {
116 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length());
117 }
118 for (int i = 0; i < objects->length(); i++) {
119 Handle location = objects->obj_at(i);
120 Handle baseLocation = derivedBase->obj_at(i);
121 int bytes = sizeInBytes->int_at(i);
122
123 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL);
124 if (baseLocation.not_null()) {
125 // derived oop
126 #ifdef _LP64
127 if (bytes == 8) {
128 #else
129 if (bytes == 4) {
130 #endif
131 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL);
132 map->set_derived_oop(vmReg, baseReg);
133 } else {
134 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
135 }
136 #ifdef _LP64
137 } else if (bytes == 8) {
138 // wide oop
139 map->set_oop(vmReg);
140 } else if (bytes == 4) {
141 // narrow oop
142 map->set_narrowoop(vmReg);
143 #else
144 } else if (bytes == 4) {
145 map->set_oop(vmReg);
146 #endif
147 } else {
148 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
149 }
150 }
151
152 Handle callee_save_info = (oop) DebugInfo::calleeSaveInfo(debug_info);
153 if (callee_save_info.not_null()) {
154 objArrayHandle registers = RegisterSaveLayout::registers(callee_save_info);
155 typeArrayHandle slots = RegisterSaveLayout::slots(callee_save_info);
156 for (jint i = 0; i < slots->length(); i++) {
157 Handle jvmci_reg = registers->obj_at(i);
158 jint jvmci_reg_number = code_Register::number(jvmci_reg);
159 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
160 // HotSpot stack slots are 4 bytes
161 jint jvmci_slot = slots->int_at(i);
162 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
163 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
164 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
165 #ifdef _LP64
166 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
167 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
168 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
169 #endif
170 }
171 }
172 return map;
173 }
174
175 AOTOopRecorder::AOTOopRecorder(Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) {
176 _meta_strings = new GrowableArray<const char*>();
177 }
178
179 int AOTOopRecorder::nr_meta_strings() const {
180 return _meta_strings->length();
181 }
182
183 const char* AOTOopRecorder::meta_element(int pos) const {
184 return _meta_strings->at(pos);
185 }
186
187 int AOTOopRecorder::find_index(Metadata* h) {
188 int index = this->OopRecorder::find_index(h);
189
190 Klass* klass = NULL;
191 if (h->is_klass()) {
192 klass = (Klass*) h;
193 record_meta_string(klass->signature_name(), index);
194 } else if (h->is_method()) {
195 Method* method = (Method*) h;
196 // Need klass->signature_name() in method name
197 klass = method->method_holder();
198 const char* klass_name = klass->signature_name();
199 int klass_name_len = (int)strlen(klass_name);
200 Symbol* method_name = method->name();
201 Symbol* signature = method->signature();
202 int method_name_len = method_name->utf8_length();
203 int method_sign_len = signature->utf8_length();
204 int len = klass_name_len + 1 + method_name_len + method_sign_len;
205 char* dest = NEW_RESOURCE_ARRAY(char, len + 1);
206 strcpy(dest, klass_name);
207 dest[klass_name_len] = '.';
208 strcpy(&dest[klass_name_len + 1], method_name->as_C_string());
209 strcpy(&dest[klass_name_len + 1 + method_name_len], signature->as_C_string());
210 dest[len] = 0;
211 record_meta_string(dest, index);
212 }
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_string(const char* name, int index) {
227 assert(index > 0, "must be 1..n");
228 index -= 1; // reduce by one to convert to array index
229
230 if (index < _meta_strings->length()) {
231 assert(strcmp(name, _meta_strings->at(index)) == 0, "must match");
232 } else {
233 assert(index == _meta_strings->length(), "must be last");
234 _meta_strings->append(name);
235 }
236 }
237
238 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
239 /*
240 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
241 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
242 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
243 * base class (Metadata* or MetaspaceObj*).
244 */
245 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
246 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
247 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
248 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
249 int index = _oop_recorder->find_index(klass);
250 section->relocate(dest, metadata_Relocation::spec(index));
251 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
252 return klass;
253 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
254 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
255 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
256 int index = _oop_recorder->find_index(method);
257 section->relocate(dest, metadata_Relocation::spec(index));
258 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
259 return method;
260 } else {
261 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
262 }
263 }
264
265 #ifdef _LP64
266 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
267 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
268 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
269
270 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
271 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
272 }
273
274 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
275 int index = _oop_recorder->find_index(klass);
276 section->relocate(dest, metadata_Relocation::spec(index));
277 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
278 return Klass::encode_klass(klass);
279 }
280 #endif
281
282 Location::Type CodeInstaller::get_oop_type(Handle value) {
283 Handle valueKind = Value::valueKind(value);
284 Handle platformKind = ValueKind::platformKind(valueKind);
285
286 if (platformKind == word_kind()) {
287 return Location::oop;
288 } else {
289 return Location::narrowoop;
290 }
291 }
292
293 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
294 second = NULL;
295 if (value.is_null()) {
296 THROW_NULL(vmSymbols::java_lang_NullPointerException());
297 } else if (value == Value::ILLEGAL()) {
298 if (type != T_ILLEGAL) {
299 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
300 }
301 return _illegal_value;
302 } else if (value->is_a(RegisterValue::klass())) {
303 Handle reg = RegisterValue::reg(value);
304 jint number = code_Register::number(reg);
305 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL);
306 if (is_general_purpose_reg(hotspotRegister)) {
307 Location::Type locationType;
308 if (type == T_OBJECT) {
309 locationType = get_oop_type(value);
310 } else if (type == T_LONG) {
311 locationType = Location::lng;
312 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
313 locationType = Location::int_in_long;
314 } else {
315 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
316 }
317 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
318 if (type == T_LONG) {
319 second = value;
320 }
321 return value;
322 } else {
323 Location::Type locationType;
324 if (type == T_FLOAT) {
325 // this seems weird, but the same value is used in c1_LinearScan
326 locationType = Location::normal;
327 } else if (type == T_DOUBLE) {
328 locationType = Location::dbl;
329 } else {
330 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
331 }
332 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
333 if (type == T_DOUBLE) {
334 second = value;
335 }
336 return value;
337 }
338 } else if (value->is_a(StackSlot::klass())) {
339 jint offset = StackSlot::offset(value);
340 if (StackSlot::addFrameSize(value)) {
341 offset += _total_frame_size;
342 }
343
344 Location::Type locationType;
345 if (type == T_OBJECT) {
346 locationType = get_oop_type(value);
347 } else if (type == T_LONG) {
348 locationType = Location::lng;
349 } else if (type == T_DOUBLE) {
350 locationType = Location::dbl;
351 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
352 locationType = Location::normal;
353 } else {
354 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
355 }
356 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
357 if (type == T_DOUBLE || type == T_LONG) {
358 second = value;
359 }
360 return value;
361 } else if (value->is_a(JavaConstant::klass())) {
362 if (value->is_a(PrimitiveConstant::klass())) {
363 if (value->is_a(RawConstant::klass())) {
364 jlong prim = PrimitiveConstant::primitive(value);
365 return new ConstantLongValue(prim);
366 } else {
367 BasicType constantType = JVMCIRuntime::kindToBasicType(PrimitiveConstant::kind(value), CHECK_NULL);
368 if (type != constantType) {
369 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
370 }
371 if (type == T_INT || type == T_FLOAT) {
372 jint prim = (jint)PrimitiveConstant::primitive(value);
373 switch (prim) {
374 case -1: return _int_m1_scope_value;
375 case 0: return _int_0_scope_value;
376 case 1: return _int_1_scope_value;
377 case 2: return _int_2_scope_value;
378 default: return new ConstantIntValue(prim);
379 }
380 } else if (type == T_LONG || type == T_DOUBLE) {
381 jlong prim = PrimitiveConstant::primitive(value);
382 second = _int_1_scope_value;
383 return new ConstantLongValue(prim);
384 } else {
385 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
386 }
387 }
388 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) {
389 if (type == T_OBJECT) {
390 return _oop_null_scope_value;
391 } else {
392 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
393 }
394 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) {
395 if (type == T_OBJECT) {
396 oop obj = HotSpotObjectConstantImpl::object(value);
397 if (obj == NULL) {
398 JVMCI_ERROR_NULL("null value must be in NullConstant");
399 }
400 return new ConstantOopWriteValue(JNIHandles::make_local(obj));
401 } else {
402 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
403 }
404 }
405 } else if (value->is_a(VirtualObject::klass())) {
406 if (type == T_OBJECT) {
407 int id = VirtualObject::id(value);
408 if (0 <= id && id < objects->length()) {
409 ScopeValue* object = objects->at(id);
410 if (object != NULL) {
411 return object;
412 }
413 }
414 JVMCI_ERROR_NULL("unknown virtual object id %d", id);
415 } else {
416 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
417 }
418 }
419
420 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name())
421 }
422
423 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
424 Handle type = VirtualObject::type(value);
425 int id = VirtualObject::id(value);
426 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
427 Klass* klass = java_lang_Class::as_Klass(javaMirror);
428 bool isLongArray = klass == Universe::longArrayKlassObj();
429
430 objArrayHandle values = VirtualObject::values(value);
431 objArrayHandle slotKinds = VirtualObject::slotKinds(value);
432 for (jint i = 0; i < values->length(); i++) {
433 ScopeValue* cur_second = NULL;
434 Handle object = values->obj_at(i);
435 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), 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 ScopeValue* owner_value = get_scope_value(StackLockValue::owner(value), T_OBJECT, objects, second, CHECK_NULL);
462 assert(second == NULL, "monitor cannot occupy two stack slots");
463
464 ScopeValue* lock_data_value = get_scope_value(StackLockValue::slot(value), T_LONG, objects, second, CHECK_NULL);
465 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
466 assert(lock_data_value->is_location(), "invalid monitor location");
467 Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
468
469 bool eliminated = false;
470 if (StackLockValue::eliminated(value)) {
471 eliminated = true;
472 }
473
474 return new MonitorValue(owner_value, lock_data_loc, eliminated);
475 }
476
477 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) {
478 JavaThread* thread = JavaThread::current();
479 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
480 _oop_recorder = recorder;
481 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
482 objArrayHandle assumptions = HotSpotCompiledCode::assumptions(compiled_code);
483 if (!assumptions.is_null()) {
484 int length = assumptions->length();
485 for (int i = 0; i < length; ++i) {
486 Handle assumption = assumptions->obj_at(i);
487 if (!assumption.is_null()) {
488 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) {
489 assumption_NoFinalizableSubclass(assumption);
490 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) {
491 assumption_ConcreteSubtype(assumption);
492 } else if (assumption->klass() == Assumptions_LeafType::klass()) {
493 assumption_LeafType(assumption);
494 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) {
495 assumption_ConcreteMethod(assumption);
496 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) {
497 assumption_CallSiteTargetValue(assumption);
498 } else {
499 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name());
500 }
501 }
502 }
503 }
504 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
505 objArrayHandle methods = HotSpotCompiledCode::methods(compiled_code);
506 if (!methods.is_null()) {
507 int length = methods->length();
508 for (int i = 0; i < length; ++i) {
509 Handle method_handle = methods->obj_at(i);
510 methodHandle method = getMethodFromHotSpotMethod(method_handle());
511 _dependencies->assert_evol_method(method());
512 }
513 }
514 }
515 }
516
517 RelocBuffer::~RelocBuffer() {
518 if (_buffer != NULL) {
519 FREE_C_HEAP_ARRAY(char, _buffer);
520 }
521 }
522
523 address RelocBuffer::begin() const {
524 if (_buffer != NULL) {
525 return (address) _buffer;
526 }
527 return (address) _static_buffer;
528 }
529
530 void RelocBuffer::set_size(size_t bytes) {
531 assert(bytes <= _size, "can't grow in size!");
532 _size = bytes;
533 }
534
535 void RelocBuffer::ensure_size(size_t bytes) {
536 assert(_buffer == NULL, "can only be used once");
537 assert(_size == 0, "can only be used once");
538 if (bytes >= RelocBuffer::stack_size) {
539 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal);
540 }
541 _size = bytes;
542 }
543
544 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) {
545 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
546 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
547 AOTOopRecorder* recorder = new AOTOopRecorder(&_arena, true);
548 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
549
550 metadata.set_oop_recorder(recorder);
551
552 // Get instructions and constants CodeSections early because we need it.
553 _instructions = buffer.insts();
554 _constants = buffer.consts();
555
556 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
557 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK);
558 if (result != JVMCIEnv::ok) {
559 return result;
560 }
561
562 _debug_recorder->pcs_size(); // create the sentinel record
563
564 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
565
566 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
567 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
568 metadata.set_exception_table(&_exception_handler_table);
569
570 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
571
572 reloc_buffer->ensure_size(buffer.total_relocation_size());
573 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
574 reloc_buffer->set_size(size);
575 return JVMCIEnv::ok;
576 }
577
578 // constructor used to create a method
579 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) {
580 CodeBuffer buffer("JVMCI Compiler CodeBuffer");
581 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
582 OopRecorder* recorder = new OopRecorder(&_arena, true);
583 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
584
585 // Get instructions and constants CodeSections early because we need it.
586 _instructions = buffer.insts();
587 _constants = buffer.consts();
588
589 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
590 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK);
591 if (result != JVMCIEnv::ok) {
592 return result;
593 }
594
595 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
596
597 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
598 oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
599 char* name = strdup(java_lang_String::as_utf8_string(stubName));
600 cb = RuntimeStub::new_runtime_stub(name,
601 &buffer,
602 CodeOffsets::frame_never_safe,
603 stack_slots,
604 _debug_recorder->_oopmaps,
605 false);
606 result = JVMCIEnv::ok;
607 } else {
608 nmethod* nm = NULL;
609 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code));
610 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code);
611 jint id = HotSpotCompiledNmethod::id(compiled_code);
612 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE;
613 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code);
614 if (id == -1) {
615 // Make sure a valid compile_id is associated with every compile
616 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
617 }
618 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
619 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table,
620 compiler, _debug_recorder, _dependencies, env, id,
621 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log);
622 cb = nm->as_codeblob_or_null();
623 if (nm != NULL && env == NULL) {
624 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
625 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
626 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) {
627 nm->print_nmethod(printnmethods);
628 }
629 DirectivesStack::release(directive);
630 }
631 }
632
633 if (cb != NULL) {
634 // Make sure the pre-calculated constants section size was correct.
635 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
636 }
637 return result;
638 }
639
640 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) {
641 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
642 Handle hotspotJavaMethod = HotSpotCompiledNmethod::method(compiled_code);
643 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod());
644 _parameter_count = method->size_of_parameters();
645 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
646 } else {
647 // Must be a HotSpotCompiledRuntimeStub.
648 // Only used in OopMap constructor for non-product builds
649 _parameter_count = 0;
650 }
651 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code));
652
653 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code));
654 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code);
655 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code);
656
657 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code);
658 if (deoptRescueSlot == NULL) {
659 _orig_pc_offset = -1;
660 } else {
661 _orig_pc_offset = StackSlot::offset(deoptRescueSlot);
662 if (StackSlot::addFrameSize(deoptRescueSlot)) {
663 _orig_pc_offset += _total_frame_size;
664 }
665 if (_orig_pc_offset < 0) {
666 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
667 }
668 }
669
670 // Pre-calculate the constants section size. This is required for PC-relative addressing.
671 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code));
672 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) {
673 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code));
674 }
675 _constants_size = data_section()->length();
676
677 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code));
678
679 #ifndef PRODUCT
680 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code));
681 #endif
682
683 _next_call_type = INVOKE_INVALID;
684
685 _has_wide_vector = false;
686
687 oop arch = TargetDescription::arch(target);
688 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch));
689 }
690
691 int CodeInstaller::estimate_stubs_size(TRAPS) {
692 // Estimate the number of static and aot call stubs that might be emitted.
693 int static_call_stubs = 0;
694 int aot_call_stubs = 0;
695 objArrayOop sites = this->sites();
696 for (int i = 0; i < sites->length(); i++) {
697 oop site = sites->obj_at(i);
698 if (site != NULL) {
699 if (site->is_a(site_Mark::klass())) {
700 oop id_obj = site_Mark::id(site);
701 if (id_obj != NULL) {
702 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) {
703 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name());
704 }
705 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
706 if (id == INVOKESTATIC || id == INVOKESPECIAL) {
707 static_call_stubs++;
708 }
709 }
710 }
711 if (UseAOT && site->is_a(site_Call::klass())) {
712 oop target = site_Call::target(site);
713 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
714 if (!target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
715 // Add far aot trampolines.
716 aot_call_stubs++;
717 }
718 }
719 }
720 }
721 int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size();
722 #if INCLUDE_AOT
723 size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size();
724 #endif
725 return size;
726 }
727
728 // perform data and call relocation on the CodeBuffer
729 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, TRAPS) {
730 HandleMark hm;
731 objArrayHandle sites = this->sites();
732 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo));
733
734 // Allocate enough space in the stub section for the static call
735 // stubs. Stubs have extra relocs but they are managed by the stub
736 // section itself so they don't need to be accounted for in the
737 // locs_buffer above.
738 int stubs_size = estimate_stubs_size(CHECK_OK);
739 int total_size = round_to(_code_size, buffer.insts()->alignment()) + round_to(_constants_size, buffer.consts()->alignment()) + round_to(stubs_size, buffer.stubs()->alignment());
740
741 if (total_size > JVMCINMethodSizeLimit) {
742 return JVMCIEnv::code_too_large;
743 }
744
745 buffer.initialize(total_size, locs_buffer_size);
746 if (buffer.blob() == NULL) {
747 return JVMCIEnv::cache_full;
748 }
749 buffer.initialize_stubs_size(stubs_size);
750 buffer.initialize_consts_size(_constants_size);
751
752 _debug_recorder = new DebugInformationRecorder(_oop_recorder);
753 _debug_recorder->set_oopmaps(new OopMapSet());
754
755 buffer.initialize_oop_recorder(_oop_recorder);
756
757 // copy the constant data into the newly created CodeBuffer
758 address end_data = _constants->start() + _constants_size;
759 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size);
760 _constants->set_end(end_data);
761
762 // copy the code into the newly created CodeBuffer
763 address end_pc = _instructions->start() + _code_size;
764 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
765 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size);
766 _instructions->set_end(end_pc);
767
768 for (int i = 0; i < data_section_patches()->length(); i++) {
769 Handle patch = data_section_patches()->obj_at(i);
770 if (patch.is_null()) {
771 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
772 }
773 Handle reference = site_DataPatch::reference(patch);
774 if (reference.is_null()) {
775 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
776 }
777 if (!reference->is_a(site_ConstantReference::klass())) {
778 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
779 }
780 Handle constant = site_ConstantReference::constant(reference);
781 if (constant.is_null()) {
782 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
783 }
784 address dest = _constants->start() + site_Site::pcOffset(patch);
785 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
786 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
787 #ifdef _LP64
788 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK);
789 #else
790 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
791 #endif
792 } else {
793 *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK);
794 }
795 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
796 Handle obj = HotSpotObjectConstantImpl::object(constant);
797 jobject value = JNIHandles::make_local(obj());
798 int oop_index = _oop_recorder->find_index(value);
799
800 if (HotSpotObjectConstantImpl::compressed(constant)) {
801 #ifdef _LP64
802 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
803 #else
804 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
805 #endif
806 } else {
807 _constants->relocate(dest, oop_Relocation::spec(oop_index));
808 }
809 } else {
810 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
811 }
812 }
813 jint last_pc_offset = -1;
814 for (int i = 0; i < sites->length(); i++) {
815 Handle site = sites->obj_at(i);
816 if (site.is_null()) {
817 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
818 }
819
820 jint pc_offset = site_Site::pcOffset(site);
821
822 if (site->is_a(site_Call::klass())) {
823 TRACE_jvmci_4("call at %i", pc_offset);
824 site_Call(buffer, pc_offset, site, CHECK_OK);
825 } else if (site->is_a(site_Infopoint::klass())) {
826 // three reasons for infopoints denote actual safepoints
827 oop reason = site_Infopoint::reason(site);
828 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) {
829 TRACE_jvmci_4("safepoint at %i", pc_offset);
830 site_Safepoint(buffer, pc_offset, site, CHECK_OK);
831 if (_orig_pc_offset < 0) {
832 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
833 }
834 } else {
835 TRACE_jvmci_4("infopoint at %i", pc_offset);
836 site_Infopoint(buffer, pc_offset, site, CHECK_OK);
837 }
838 } else if (site->is_a(site_DataPatch::klass())) {
839 TRACE_jvmci_4("datapatch at %i", pc_offset);
840 site_DataPatch(buffer, pc_offset, site, CHECK_OK);
841 } else if (site->is_a(site_Mark::klass())) {
842 TRACE_jvmci_4("mark at %i", pc_offset);
843 site_Mark(buffer, pc_offset, site, CHECK_OK);
844 } else if (site->is_a(site_ExceptionHandler::klass())) {
845 TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
846 site_ExceptionHandler(pc_offset, site);
847 } else {
848 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name());
849 }
850 last_pc_offset = pc_offset;
851
852 if (SafepointSynchronize::do_call_back()) {
853 // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
854 ThreadToNativeFromVM ttnfv(JavaThread::current());
855 }
856 }
857
858 #ifndef PRODUCT
859 if (comments() != NULL) {
860 for (int i = 0; i < comments()->length(); i++) {
861 oop comment = comments()->obj_at(i);
862 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce");
863 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment);
864 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment));
865 buffer.block_comment(offset, text);
866 }
867 }
868 #endif
869 return JVMCIEnv::ok;
870 }
871
872 void CodeInstaller::assumption_NoFinalizableSubclass(Handle assumption) {
873 Handle receiverType_handle = Assumptions_NoFinalizableSubclass::receiverType(assumption());
874 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle));
875 _dependencies->assert_has_no_finalizable_subclasses(receiverType);
876 }
877
878 void CodeInstaller::assumption_ConcreteSubtype(Handle assumption) {
879 Handle context_handle = Assumptions_ConcreteSubtype::context(assumption());
880 Handle subtype_handle = Assumptions_ConcreteSubtype::subtype(assumption());
881 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
882 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle));
883
884 assert(context->is_abstract(), "");
885 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
886 }
887
888 void CodeInstaller::assumption_LeafType(Handle assumption) {
889 Handle context_handle = Assumptions_LeafType::context(assumption());
890 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
891
892 _dependencies->assert_leaf_type(context);
893 }
894
895 void CodeInstaller::assumption_ConcreteMethod(Handle assumption) {
896 Handle impl_handle = Assumptions_ConcreteMethod::impl(assumption());
897 Handle context_handle = Assumptions_ConcreteMethod::context(assumption());
898
899 methodHandle impl = getMethodFromHotSpotMethod(impl_handle());
900 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
901
902 _dependencies->assert_unique_concrete_method(context, impl());
903 }
904
905 void CodeInstaller::assumption_CallSiteTargetValue(Handle assumption) {
906 Handle callSite = Assumptions_CallSiteTargetValue::callSite(assumption());
907 Handle methodHandle = Assumptions_CallSiteTargetValue::methodHandle(assumption());
908
909 _dependencies->assert_call_site_target_value(callSite(), methodHandle());
910 }
911
912 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) {
913 jint handler_offset = site_ExceptionHandler::handlerPos(exc);
914
915 // Subtable header
916 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
917
918 // Subtable entry
919 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
920 }
921
922 // If deoptimization happens, the interpreter should reexecute these bytecodes.
923 // This function mainly helps the compilers to set up the reexecute bit.
924 static bool bytecode_should_reexecute(Bytecodes::Code code) {
925 switch (code) {
926 case Bytecodes::_invokedynamic:
927 case Bytecodes::_invokevirtual:
928 case Bytecodes::_invokeinterface:
929 case Bytecodes::_invokespecial:
930 case Bytecodes::_invokestatic:
931 return false;
932 default:
933 return true;
934 }
935 return true;
936 }
937
938 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) {
939 objArrayHandle virtualObjects = DebugInfo::virtualObjectMapping(debug_info);
940 if (virtualObjects.is_null()) {
941 return NULL;
942 }
943 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL);
944 // Create the unique ObjectValues
945 for (int i = 0; i < virtualObjects->length(); i++) {
946 Handle value = virtualObjects->obj_at(i);
947 int id = VirtualObject::id(value);
948 Handle type = VirtualObject::type(value);
949 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
950 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror)));
951 if (id < 0 || id >= objects->length()) {
952 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
953 }
954 if (objects->at(id) != NULL) {
955 JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
956 }
957 objects->at_put(id, sv);
958 }
959 // All the values which could be referenced by the VirtualObjects
960 // exist, so now describe all the VirtualObjects themselves.
961 for (int i = 0; i < virtualObjects->length(); i++) {
962 Handle value = virtualObjects->obj_at(i);
963 int id = VirtualObject::id(value);
964 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL);
965 }
966 _debug_recorder->dump_object_pool(objects);
967 return objects;
968 }
969
970 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, TRAPS) {
971 Handle position = DebugInfo::bytecodePosition(debug_info);
972 if (position.is_null()) {
973 // Stubs do not record scope info, just oop maps
974 return;
975 }
976
977 GrowableArray<ScopeValue*>* objectMapping;
978 if (scope_mode == CodeInstaller::FullFrame) {
979 objectMapping = record_virtual_objects(debug_info, CHECK);
980 } else {
981 objectMapping = NULL;
982 }
983 record_scope(pc_offset, position, scope_mode, objectMapping, CHECK);
984 }
985
986 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, TRAPS) {
987 Handle frame;
988 if (scope_mode == CodeInstaller::FullFrame) {
989 if (!position->is_a(BytecodeFrame::klass())) {
990 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
991 }
992 frame = position;
993 }
994 Handle caller_frame = BytecodePosition::caller(position);
995 if (caller_frame.not_null()) {
996 record_scope(pc_offset, caller_frame, scope_mode, objects, CHECK);
997 }
998
999 Handle hotspot_method = BytecodePosition::method(position);
1000 Method* method = getMethodFromHotSpotMethod(hotspot_method());
1001 jint bci = BytecodePosition::bci(position);
1002 if (bci == BytecodeFrame::BEFORE_BCI()) {
1003 bci = SynchronizationEntryBCI;
1004 }
1005
1006 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
1007
1008 bool reexecute = false;
1009 if (frame.not_null()) {
1010 if (bci == SynchronizationEntryBCI){
1011 reexecute = false;
1012 } else {
1013 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
1014 reexecute = bytecode_should_reexecute(code);
1015 if (frame.not_null()) {
1016 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE);
1017 }
1018 }
1019 }
1020
1021 DebugToken* locals_token = NULL;
1022 DebugToken* expressions_token = NULL;
1023 DebugToken* monitors_token = NULL;
1024 bool throw_exception = false;
1025
1026 if (frame.not_null()) {
1027 jint local_count = BytecodeFrame::numLocals(frame);
1028 jint expression_count = BytecodeFrame::numStack(frame);
1029 jint monitor_count = BytecodeFrame::numLocks(frame);
1030 objArrayHandle values = BytecodeFrame::values(frame);
1031 objArrayHandle slotKinds = BytecodeFrame::slotKinds(frame);
1032
1033 if (values.is_null() || slotKinds.is_null()) {
1034 THROW(vmSymbols::java_lang_NullPointerException());
1035 }
1036 if (local_count + expression_count + monitor_count != values->length()) {
1037 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count);
1038 }
1039 if (local_count + expression_count != slotKinds->length()) {
1040 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count);
1041 }
1042
1043 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
1044 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
1045 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
1046
1047 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length());
1048 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
1049
1050 for (jint i = 0; i < values->length(); i++) {
1051 ScopeValue* second = NULL;
1052 Handle value = values->obj_at(i);
1053 if (i < local_count) {
1054 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
1055 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1056 if (second != NULL) {
1057 locals->append(second);
1058 }
1059 locals->append(first);
1060 } else if (i < local_count + expression_count) {
1061 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
1062 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
1063 if (second != NULL) {
1064 expressions->append(second);
1065 }
1066 expressions->append(first);
1067 } else {
1068 MonitorValue *monitor = get_monitor_value(value, objects, CHECK);
1069 monitors->append(monitor);
1070 }
1071 if (second != NULL) {
1072 i++;
1073 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) {
1074 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
1075 }
1076 }
1077 }
1078
1079 locals_token = _debug_recorder->create_scope_values(locals);
1080 expressions_token = _debug_recorder->create_scope_values(expressions);
1081 monitors_token = _debug_recorder->create_monitor_values(monitors);
1082
1083 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE;
1084 }
1085
1086 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, false,
1087 locals_token, expressions_token, monitors_token);
1088 }
1089
1090 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1091 Handle debug_info = site_Infopoint::debugInfo(site);
1092 if (debug_info.is_null()) {
1093 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1094 }
1095
1096 // address instruction = _instructions->start() + pc_offset;
1097 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1098 OopMap *map = create_oop_map(debug_info, CHECK);
1099 _debug_recorder->add_safepoint(pc_offset, map);
1100 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1101 _debug_recorder->end_safepoint(pc_offset);
1102 }
1103
1104 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1105 Handle debug_info = site_Infopoint::debugInfo(site);
1106 if (debug_info.is_null()) {
1107 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1108 }
1109
1110 // We'd like to check that pc_offset is greater than the
1111 // last pc recorded with _debug_recorder (raising an exception if not)
1112 // but DebugInformationRecorder doesn't have sufficient public API.
1113
1114 _debug_recorder->add_non_safepoint(pc_offset);
1115 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK);
1116 _debug_recorder->end_non_safepoint(pc_offset);
1117 }
1118
1119 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1120 Handle target = site_Call::target(site);
1121 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
1122
1123 Handle hotspot_method; // JavaMethod
1124 Handle foreign_call;
1125
1126 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
1127 foreign_call = target;
1128 } else {
1129 hotspot_method = target;
1130 }
1131
1132 Handle debug_info = site_Call::debugInfo(site);
1133
1134 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type");
1135
1136 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1137 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK);
1138
1139 if (debug_info.not_null()) {
1140 OopMap *map = create_oop_map(debug_info, CHECK);
1141 _debug_recorder->add_safepoint(next_pc_offset, map);
1142 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1143 }
1144
1145 if (foreign_call.not_null()) {
1146 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call);
1147 if (_immutable_pic_compilation) {
1148 // Use fake short distance during PIC compilation.
1149 foreign_call_destination = (jlong)(_instructions->start() + pc_offset);
1150 }
1151 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK);
1152 } else { // method != NULL
1153 if (debug_info.is_null()) {
1154 JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1155 }
1156
1157 TRACE_jvmci_3("method call");
1158 CodeInstaller::pd_relocate_JavaMethod(hotspot_method, pc_offset, CHECK);
1159 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1160 // Need a static call stub for transitions from compiled to interpreted.
1161 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1162 }
1163 #if INCLUDE_AOT
1164 // Trampoline to far aot code.
1165 CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset);
1166 #endif
1167 }
1168
1169 _next_call_type = INVOKE_INVALID;
1170
1171 if (debug_info.not_null()) {
1172 _debug_recorder->end_safepoint(next_pc_offset);
1173 }
1174 }
1175
1176 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1177 Handle reference = site_DataPatch::reference(site);
1178 if (reference.is_null()) {
1179 THROW(vmSymbols::java_lang_NullPointerException());
1180 } else if (reference->is_a(site_ConstantReference::klass())) {
1181 Handle constant = site_ConstantReference::constant(reference);
1182 if (constant.is_null()) {
1183 THROW(vmSymbols::java_lang_NullPointerException());
1184 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
1185 if (!_immutable_pic_compilation) {
1186 // Do not patch during PIC compilation.
1187 pd_patch_OopConstant(pc_offset, constant, CHECK);
1188 }
1189 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
1190 if (!_immutable_pic_compilation) {
1191 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK);
1192 }
1193 } else if (constant->is_a(HotSpotSentinelConstant::klass())) {
1194 if (!_immutable_pic_compilation) {
1195 JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", constant->klass()->signature_name());
1196 }
1197 } else {
1198 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name());
1199 }
1200 } else if (reference->is_a(site_DataSectionReference::klass())) {
1201 int data_offset = site_DataSectionReference::offset(reference);
1202 if (0 <= data_offset && data_offset < _constants_size) {
1203 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK);
1204 } else {
1205 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1206 }
1207 } else {
1208 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name());
1209 }
1210 }
1211
1212 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1213 Handle id_obj = site_Mark::id(site);
1214
1215 if (id_obj.not_null()) {
1216 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) {
1217 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name());
1218 }
1219 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
1220
1221 address pc = _instructions->start() + pc_offset;
1222
1223 switch (id) {
1224 case UNVERIFIED_ENTRY:
1225 _offsets.set_value(CodeOffsets::Entry, pc_offset);
1226 break;
1227 case VERIFIED_ENTRY:
1228 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1229 break;
1230 case OSR_ENTRY:
1231 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1232 break;
1233 case EXCEPTION_HANDLER_ENTRY:
1234 _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1235 break;
1236 case DEOPT_HANDLER_ENTRY:
1237 _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1238 break;
1239 case INVOKEVIRTUAL:
1240 case INVOKEINTERFACE:
1241 case INLINE_INVOKE:
1242 case INVOKESTATIC:
1243 case INVOKESPECIAL:
1244 _next_call_type = (MarkId) id;
1245 _invoke_mark_pc = pc;
1246 break;
1247 case POLL_NEAR:
1248 case POLL_FAR:
1249 case POLL_RETURN_NEAR:
1250 case POLL_RETURN_FAR:
1251 pd_relocate_poll(pc, id, CHECK);
1252 break;
1253 case CARD_TABLE_SHIFT:
1254 case CARD_TABLE_ADDRESS:
1255 case HEAP_TOP_ADDRESS:
1256 case HEAP_END_ADDRESS:
1257 case NARROW_KLASS_BASE_ADDRESS:
1258 case CRC_TABLE_ADDRESS:
1259 case LOG_OF_HEAP_REGION_GRAIN_BYTES:
1260 break;
1261 default:
1262 JVMCI_ERROR("invalid mark id: %d", id);
1263 break;
1264 }
1265 }
1266 }
1267