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 "code/compiledIC.hpp"
26 #include "compiler/compileBroker.hpp"
27 #include "compiler/disassembler.hpp"
28 #include "oops/oop.inline.hpp"
29 #include "oops/objArrayOop.inline.hpp"
30 #include "runtime/javaCalls.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 "asm/register.hpp"
38 #include "classfile/vmSymbols.hpp"
39 #include "code/vmreg.hpp"
40
41 #ifdef TARGET_ARCH_x86
42 # include "vmreg_x86.inline.hpp"
43 #endif
44 #ifdef TARGET_ARCH_sparc
45 # include "vmreg_sparc.inline.hpp"
46 #endif
47 #ifdef TARGET_ARCH_zero
48 # include "vmreg_zero.inline.hpp"
49 #endif
50 #ifdef TARGET_ARCH_arm
51 # include "vmreg_arm.inline.hpp"
52 #endif
53 #ifdef TARGET_ARCH_ppc
54 # include "vmreg_ppc.inline.hpp"
55 #endif
56
57
58 // frequently used constants
59 // Allocate them with new so they are never destroyed (otherwise, a
60 // forced exit could destroy these objects while they are still in
61 // use).
62 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL);
63 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1);
64 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(0);
65 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1);
66 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2);
67 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location());
68
69 Method* getMethodFromHotSpotMethod(oop hotspot_method) {
70 assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity");
71 return CompilerToVM::asMethod(hotspot_method);
72 }
73
74 VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) {
75 if (location.is_null()) {
76 THROW_NULL(vmSymbols::java_lang_NullPointerException());
77 }
78
79 Handle reg = code_Location::reg(location);
80 jint offset = code_Location::offset(location);
81
82 if (reg.not_null()) {
83 // register
84 jint number = code_Register::number(reg);
85 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL);
86 if (offset % 4 == 0) {
87 return vmReg->next(offset / 4);
88 } else {
89 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset);
90 }
91 } else {
92 // stack slot
93 if (offset % 4 == 0) {
94 return VMRegImpl::stack2reg(offset / 4);
95 } else {
96 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
97 }
98 }
99 }
100
101 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo
102 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) {
103 Handle reference_map = DebugInfo::referenceMap(debug_info);
104 if (reference_map.is_null()) {
105 THROW_NULL(vmSymbols::java_lang_NullPointerException());
106 }
107 if (!reference_map->is_a(HotSpotReferenceMap::klass())) {
108 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name());
109 }
110 if (HotSpotReferenceMap::maxRegisterSize(reference_map) > 16) {
111 _has_wide_vector = true;
112 }
113 OopMap* map = new OopMap(_total_frame_size, _parameter_count);
114 objArrayHandle objects = HotSpotReferenceMap::objects(reference_map);
115 objArrayHandle derivedBase = HotSpotReferenceMap::derivedBase(reference_map);
116 typeArrayHandle sizeInBytes = HotSpotReferenceMap::sizeInBytes(reference_map);
117 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
118 THROW_NULL(vmSymbols::java_lang_NullPointerException());
119 }
120 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) {
121 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length());
122 }
123 for (int i = 0; i < objects->length(); i++) {
124 Handle location = objects->obj_at(i);
125 Handle baseLocation = derivedBase->obj_at(i);
126 int bytes = sizeInBytes->int_at(i);
127
128 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL);
129 if (baseLocation.not_null()) {
130 // derived oop
131 #ifdef _LP64
132 if (bytes == 8) {
133 #else
134 if (bytes == 4) {
135 #endif
136 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL);
137 map->set_derived_oop(vmReg, baseReg);
138 } else {
139 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
140 }
141 #ifdef _LP64
142 } else if (bytes == 8) {
143 // wide oop
144 map->set_oop(vmReg);
145 } else if (bytes == 4) {
146 // narrow oop
147 map->set_narrowoop(vmReg);
148 #else
149 } else if (bytes == 4) {
150 map->set_oop(vmReg);
151 #endif
152 } else {
153 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
154 }
155 }
156
157 Handle callee_save_info = (oop) DebugInfo::calleeSaveInfo(debug_info);
158 if (callee_save_info.not_null()) {
159 objArrayHandle registers = RegisterSaveLayout::registers(callee_save_info);
160 typeArrayHandle slots = RegisterSaveLayout::slots(callee_save_info);
161 for (jint i = 0; i < slots->length(); i++) {
162 Handle jvmci_reg = registers->obj_at(i);
163 jint jvmci_reg_number = code_Register::number(jvmci_reg);
164 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
165 // HotSpot stack slots are 4 bytes
166 jint jvmci_slot = slots->int_at(i);
167 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
168 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
169 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
170 #ifdef _LP64
171 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
172 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
173 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
174 #endif
175 }
176 }
177 return map;
178 }
179
180 void* CodeInstaller::record_metadata_reference(Handle constant, TRAPS) {
181 /*
182 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
183 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
184 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
185 * base class (Metadata* or MetaspaceObj*).
186 */
187 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
188 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
189 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
190 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
191 int index = _oop_recorder->find_index(klass);
192 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
193 return klass;
194 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
195 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
196 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
197 int index = _oop_recorder->find_index(method);
198 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
199 return method;
200 } else {
201 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
202 }
203 }
204
205 #ifdef _LP64
206 narrowKlass CodeInstaller::record_narrow_metadata_reference(Handle constant, TRAPS) {
207 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
208 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
209
210 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
211 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
212 }
213
214 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
215 int index = _oop_recorder->find_index(klass);
216 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
217 return Klass::encode_klass(klass);
218 }
219 #endif
220
221 Location::Type CodeInstaller::get_oop_type(Handle value) {
222 Handle lirKind = Value::lirKind(value);
223 Handle platformKind = LIRKind::platformKind(lirKind);
224 assert(LIRKind::referenceMask(lirKind) == 1, "unexpected referenceMask");
225
226 if (platformKind == word_kind()) {
227 return Location::oop;
228 } else {
229 return Location::narrowoop;
230 }
231 }
232
233 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
234 second = NULL;
235 if (value.is_null()) {
236 THROW_NULL(vmSymbols::java_lang_NullPointerException());
237 } else if (value == Value::ILLEGAL()) {
238 if (type != T_ILLEGAL) {
239 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
240 }
241 return _illegal_value;
242 } else if (value->is_a(RegisterValue::klass())) {
243 Handle reg = RegisterValue::reg(value);
244 jint number = code_Register::number(reg);
245 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL);
246 if (is_general_purpose_reg(hotspotRegister)) {
247 Location::Type locationType;
248 if (type == T_OBJECT) {
249 locationType = get_oop_type(value);
250 } else if (type == T_LONG) {
251 locationType = Location::lng;
252 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
253 locationType = Location::int_in_long;
254 } else {
255 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
256 }
257 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
258 if (type == T_LONG) {
259 second = value;
260 }
261 return value;
262 } else {
263 Location::Type locationType;
264 if (type == T_FLOAT) {
265 // this seems weird, but the same value is used in c1_LinearScan
266 locationType = Location::normal;
267 } else if (type == T_DOUBLE) {
268 locationType = Location::dbl;
269 } else {
270 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
271 }
272 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
273 if (type == T_DOUBLE) {
274 second = value;
275 }
276 return value;
277 }
278 } else if (value->is_a(StackSlot::klass())) {
279 jint offset = StackSlot::offset(value);
280 if (StackSlot::addFrameSize(value)) {
281 offset += _total_frame_size;
282 }
283
284 Location::Type locationType;
285 if (type == T_OBJECT) {
286 locationType = get_oop_type(value);
287 } else if (type == T_LONG) {
288 locationType = Location::lng;
289 } else if (type == T_DOUBLE) {
290 locationType = Location::dbl;
291 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
292 locationType = Location::normal;
293 } else {
294 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
295 }
296 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
297 if (type == T_DOUBLE || type == T_LONG) {
298 second = value;
299 }
300 return value;
301 } else if (value->is_a(JavaConstant::klass())) {
302 if (value->is_a(PrimitiveConstant::klass())) {
303 if (value->is_a(RawConstant::klass())) {
304 jlong prim = PrimitiveConstant::primitive(value);
305 return new ConstantLongValue(prim);
306 } else {
307 BasicType constantType = JVMCIRuntime::kindToBasicType(PrimitiveConstant::kind(value), CHECK_NULL);
308 if (type != constantType) {
309 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
310 }
311 if (type == T_INT || type == T_FLOAT) {
312 jint prim = (jint)PrimitiveConstant::primitive(value);
313 switch (prim) {
314 case -1: return _int_m1_scope_value;
315 case 0: return _int_0_scope_value;
316 case 1: return _int_1_scope_value;
317 case 2: return _int_2_scope_value;
318 default: return new ConstantIntValue(prim);
319 }
320 } else if (type == T_LONG || type == T_DOUBLE) {
321 jlong prim = PrimitiveConstant::primitive(value);
322 second = _int_1_scope_value;
323 return new ConstantLongValue(prim);
324 } else {
325 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
326 }
327 }
328 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) {
329 if (type == T_OBJECT) {
330 return _oop_null_scope_value;
331 } else {
332 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
333 }
334 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) {
335 if (type == T_OBJECT) {
336 oop obj = HotSpotObjectConstantImpl::object(value);
337 if (obj == NULL) {
338 JVMCI_ERROR_NULL("null value must be in NullConstant");
339 }
340 return new ConstantOopWriteValue(JNIHandles::make_local(obj));
341 } else {
342 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
343 }
344 }
345 } else if (value->is_a(VirtualObject::klass())) {
346 if (type == T_OBJECT) {
347 int id = VirtualObject::id(value);
348 if (0 <= id && id < objects->length()) {
349 ScopeValue* object = objects->at(id);
350 if (object != NULL) {
351 return object;
352 }
353 }
354 JVMCI_ERROR_NULL("unknown virtual object id %d", id);
355 } else {
356 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
357 }
358 }
359
360 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name())
361 }
362
363 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
364 Handle type = VirtualObject::type(value);
365 int id = VirtualObject::id(value);
366 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
367 Klass* klass = java_lang_Class::as_Klass(javaMirror);
368 bool isLongArray = klass == Universe::longArrayKlassObj();
369
370 objArrayHandle values = VirtualObject::values(value);
371 objArrayHandle slotKinds = VirtualObject::slotKinds(value);
372 for (jint i = 0; i < values->length(); i++) {
373 ScopeValue* cur_second = NULL;
374 Handle object = values->obj_at(i);
375 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
376 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK);
377
378 if (isLongArray && cur_second == NULL) {
379 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
380 // add an int 0 constant
381 cur_second = _int_0_scope_value;
382 }
383
384 if (cur_second != NULL) {
385 sv->field_values()->append(cur_second);
386 }
387 assert(value != NULL, "missing value");
388 sv->field_values()->append(value);
389 }
390 }
391
392 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
393 if (value.is_null()) {
394 THROW_NULL(vmSymbols::java_lang_NullPointerException());
395 }
396 if (!value->is_a(StackLockValue::klass())) {
397 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name());
398 }
399
400 ScopeValue* second = NULL;
401 ScopeValue* owner_value = get_scope_value(StackLockValue::owner(value), T_OBJECT, objects, second, CHECK_NULL);
402 assert(second == NULL, "monitor cannot occupy two stack slots");
403
404 ScopeValue* lock_data_value = get_scope_value(StackLockValue::slot(value), T_LONG, objects, second, CHECK_NULL);
405 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
406 assert(lock_data_value->is_location(), "invalid monitor location");
407 Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
408
409 bool eliminated = false;
410 if (StackLockValue::eliminated(value)) {
411 eliminated = true;
412 }
413
414 return new MonitorValue(owner_value, lock_data_loc, eliminated);
415 }
416
417 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) {
418 JavaThread* thread = JavaThread::current();
419 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
420 _oop_recorder = recorder;
421 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
422 objArrayHandle assumptions = HotSpotCompiledCode::assumptions(compiled_code);
423 if (!assumptions.is_null()) {
424 int length = assumptions->length();
425 for (int i = 0; i < length; ++i) {
426 Handle assumption = assumptions->obj_at(i);
427 if (!assumption.is_null()) {
428 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) {
429 assumption_NoFinalizableSubclass(assumption);
430 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) {
431 assumption_ConcreteSubtype(assumption);
432 } else if (assumption->klass() == Assumptions_LeafType::klass()) {
433 assumption_LeafType(assumption);
434 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) {
435 assumption_ConcreteMethod(assumption);
436 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) {
437 assumption_CallSiteTargetValue(assumption);
438 } else {
439 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name());
440 }
441 }
442 }
443 }
444 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
445 objArrayHandle methods = HotSpotCompiledCode::methods(compiled_code);
446 if (!methods.is_null()) {
447 int length = methods->length();
448 for (int i = 0; i < length; ++i) {
449 Handle method_handle = methods->obj_at(i);
450 methodHandle method = getMethodFromHotSpotMethod(method_handle());
451 _dependencies->assert_evol_method(method());
452 }
453 }
454 }
455 }
456
457 RelocBuffer::~RelocBuffer() {
458 if (_buffer != NULL) {
459 FREE_C_HEAP_ARRAY(char, _buffer);
460 }
461 }
462
463 address RelocBuffer::begin() const {
464 if (_buffer != NULL) {
465 return (address) _buffer;
466 }
467 return (address) _static_buffer;
468 }
469
470 void RelocBuffer::set_size(size_t bytes) {
471 assert(bytes <= _size, "can't grow in size!");
472 _size = bytes;
473 }
474
475 void RelocBuffer::ensure_size(size_t bytes) {
476 assert(_buffer == NULL, "can only be used once");
477 assert(_size == 0, "can only be used once");
478 if (bytes >= RelocBuffer::stack_size) {
479 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal);
480 }
481 _size = bytes;
482 }
483
484 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) {
485 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
486 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
487 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), NULL, CHECK_OK);
488
489 // Get instructions and constants CodeSections early because we need it.
490 _instructions = buffer.insts();
491 _constants = buffer.consts();
492
493 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
494 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK);
495 if (result != JVMCIEnv::ok) {
496 return result;
497 }
498
499 _debug_recorder->pcs_size(); // ehm, create the sentinel record
500
501 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
502
503 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
504 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
505 metadata.set_exception_table(&_exception_handler_table);
506
507 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
508
509 reloc_buffer->ensure_size(buffer.total_relocation_size());
510 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
511 reloc_buffer->set_size(size);
512 return JVMCIEnv::ok;
513 }
514
515 // constructor used to create a method
516 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) {
517 CodeBuffer buffer("JVMCI Compiler CodeBuffer");
518 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
519 OopRecorder* recorder = new OopRecorder(&_arena, true);
520 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
521
522 // Get instructions and constants CodeSections early because we need it.
523 _instructions = buffer.insts();
524 _constants = buffer.consts();
525
526 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
527 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK);
528 if (result != JVMCIEnv::ok) {
529 return result;
530 }
531
532 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
533
534 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
535 oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
536 char* name = strdup(java_lang_String::as_utf8_string(stubName));
537 cb = RuntimeStub::new_runtime_stub(name,
538 &buffer,
539 CodeOffsets::frame_never_safe,
540 stack_slots,
541 _debug_recorder->_oopmaps,
542 false);
543 result = JVMCIEnv::ok;
544 } else {
545 nmethod* nm = NULL;
546 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code));
547 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code);
548 jint id = HotSpotCompiledNmethod::id(compiled_code);
549 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE;
550 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code);
551 if (id == -1) {
552 // Make sure a valid compile_id is associated with every compile
553 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
554 }
555 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
556 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table,
557 compiler, _debug_recorder, _dependencies, env, id,
558 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log);
559 cb = nm;
560 if (nm != NULL && env == NULL) {
561 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
562 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
563 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) {
564 nm->print_nmethod(printnmethods);
565 }
566 DirectivesStack::release(directive);
567 }
568 }
569
570 if (cb != NULL) {
571 // Make sure the pre-calculated constants section size was correct.
572 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
573 }
574 return result;
575 }
576
577 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) {
578 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
579 Handle hotspotJavaMethod = HotSpotCompiledNmethod::method(compiled_code);
580 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod());
581 _parameter_count = method->size_of_parameters();
582 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
583 } else {
584 // Must be a HotSpotCompiledRuntimeStub.
585 // Only used in OopMap constructor for non-product builds
586 _parameter_count = 0;
587 }
588 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code));
589
590 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code));
591 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code);
592 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code);
593
594 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code);
595 if (deoptRescueSlot == NULL) {
596 _orig_pc_offset = -1;
597 } else {
598 _orig_pc_offset = StackSlot::offset(deoptRescueSlot);
599 if (StackSlot::addFrameSize(deoptRescueSlot)) {
600 _orig_pc_offset += _total_frame_size;
601 }
602 if (_orig_pc_offset < 0) {
603 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
604 }
605 }
606
607 // Pre-calculate the constants section size. This is required for PC-relative addressing.
608 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code));
609 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) {
610 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code));
611 }
612 _constants_size = data_section()->length();
613
614 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code));
615
616 #ifndef PRODUCT
617 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code));
618 #endif
619
620 _next_call_type = INVOKE_INVALID;
621
622 _has_wide_vector = false;
623
624 oop arch = TargetDescription::arch(target);
625 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch));
626 }
627
628 int CodeInstaller::estimate_stubs_size(TRAPS) {
629 // Estimate the number of static call stubs that might be emitted.
630 int static_call_stubs = 0;
631 objArrayOop sites = this->sites();
632 for (int i = 0; i < sites->length(); i++) {
633 oop site = sites->obj_at(i);
634 if (site != NULL && site->is_a(site_Mark::klass())) {
635 oop id_obj = site_Mark::id(site);
636 if (id_obj != NULL) {
637 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) {
638 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name());
639 }
640 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
641 if (id == INVOKESTATIC || id == INVOKESPECIAL) {
642 static_call_stubs++;
643 }
644 }
645 }
646 }
647 return static_call_stubs * CompiledStaticCall::to_interp_stub_size();
648 }
649
650 // perform data and call relocation on the CodeBuffer
651 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, TRAPS) {
652 HandleMark hm;
653 objArrayHandle sites = this->sites();
654 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo));
655
656 // Allocate enough space in the stub section for the static call
657 // stubs. Stubs have extra relocs but they are managed by the stub
658 // section itself so they don't need to be accounted for in the
659 // locs_buffer above.
660 int stubs_size = estimate_stubs_size(CHECK_OK);
661 int total_size = round_to(_code_size, buffer.insts()->alignment()) + round_to(_constants_size, buffer.consts()->alignment()) + round_to(stubs_size, buffer.stubs()->alignment());
662
663 if (total_size > JVMCINMethodSizeLimit) {
664 return JVMCIEnv::code_too_large;
665 }
666
667 buffer.initialize(total_size, locs_buffer_size);
668 if (buffer.blob() == NULL) {
669 return JVMCIEnv::cache_full;
670 }
671 buffer.initialize_stubs_size(stubs_size);
672 buffer.initialize_consts_size(_constants_size);
673
674 _debug_recorder = new DebugInformationRecorder(_oop_recorder);
675 _debug_recorder->set_oopmaps(new OopMapSet());
676
677 buffer.initialize_oop_recorder(_oop_recorder);
678
679 // copy the constant data into the newly created CodeBuffer
680 address end_data = _constants->start() + _constants_size;
681 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size);
682 _constants->set_end(end_data);
683
684 // copy the code into the newly created CodeBuffer
685 address end_pc = _instructions->start() + _code_size;
686 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
687 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size);
688 _instructions->set_end(end_pc);
689
690 for (int i = 0; i < data_section_patches()->length(); i++) {
691 Handle patch = data_section_patches()->obj_at(i);
692 if (patch.is_null()) {
693 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
694 }
695 Handle reference = site_DataPatch::reference(patch);
696 if (reference.is_null()) {
697 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
698 }
699 if (!reference->is_a(site_ConstantReference::klass())) {
700 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
701 }
702 Handle constant = site_ConstantReference::constant(reference);
703 if (constant.is_null()) {
704 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
705 }
706 address dest = _constants->start() + site_Site::pcOffset(patch);
707 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
708 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
709 #ifdef _LP64
710 *((narrowKlass*) dest) = record_narrow_metadata_reference(constant, CHECK_OK);
711 #else
712 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
713 #endif
714 } else {
715 *((void**) dest) = record_metadata_reference(constant, CHECK_OK);
716 }
717 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
718 Handle obj = HotSpotObjectConstantImpl::object(constant);
719 jobject value = JNIHandles::make_local(obj());
720 int oop_index = _oop_recorder->find_index(value);
721
722 if (HotSpotObjectConstantImpl::compressed(constant)) {
723 #ifdef _LP64
724 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
725 #else
726 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
727 #endif
728 } else {
729 _constants->relocate(dest, oop_Relocation::spec(oop_index));
730 }
731 } else {
732 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
733 }
734 }
735 jint last_pc_offset = -1;
736 for (int i = 0; i < sites->length(); i++) {
737 Handle site = sites->obj_at(i);
738 if (site.is_null()) {
739 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
740 }
741
742 jint pc_offset = site_Site::pcOffset(site);
743
744 if (site->is_a(site_Call::klass())) {
745 TRACE_jvmci_4("call at %i", pc_offset);
746 site_Call(buffer, pc_offset, site, CHECK_OK);
747 } else if (site->is_a(site_Infopoint::klass())) {
748 // three reasons for infopoints denote actual safepoints
749 oop reason = site_Infopoint::reason(site);
750 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) {
751 TRACE_jvmci_4("safepoint at %i", pc_offset);
752 site_Safepoint(buffer, pc_offset, site, CHECK_OK);
753 if (_orig_pc_offset < 0) {
754 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
755 }
756 } else {
757 TRACE_jvmci_4("infopoint at %i", pc_offset);
758 site_Infopoint(buffer, pc_offset, site, CHECK_OK);
759 }
760 } else if (site->is_a(site_DataPatch::klass())) {
761 TRACE_jvmci_4("datapatch at %i", pc_offset);
762 site_DataPatch(buffer, pc_offset, site, CHECK_OK);
763 } else if (site->is_a(site_Mark::klass())) {
764 TRACE_jvmci_4("mark at %i", pc_offset);
765 site_Mark(buffer, pc_offset, site, CHECK_OK);
766 } else if (site->is_a(site_ExceptionHandler::klass())) {
767 TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
768 site_ExceptionHandler(pc_offset, site);
769 } else {
770 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name());
771 }
772 last_pc_offset = pc_offset;
773
774 if (CodeInstallSafepointChecks && SafepointSynchronize::do_call_back()) {
775 // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
776 ThreadToNativeFromVM ttnfv(JavaThread::current());
777 }
778 }
779
780 #ifndef PRODUCT
781 if (comments() != NULL) {
782 for (int i = 0; i < comments()->length(); i++) {
783 oop comment = comments()->obj_at(i);
784 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce");
785 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment);
786 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment));
787 buffer.block_comment(offset, text);
788 }
789 }
790 #endif
791 return JVMCIEnv::ok;
792 }
793
794 void CodeInstaller::assumption_NoFinalizableSubclass(Handle assumption) {
795 Handle receiverType_handle = Assumptions_NoFinalizableSubclass::receiverType(assumption());
796 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle));
797 _dependencies->assert_has_no_finalizable_subclasses(receiverType);
798 }
799
800 void CodeInstaller::assumption_ConcreteSubtype(Handle assumption) {
801 Handle context_handle = Assumptions_ConcreteSubtype::context(assumption());
802 Handle subtype_handle = Assumptions_ConcreteSubtype::subtype(assumption());
803 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
804 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle));
805
806 assert(context->is_abstract(), "");
807 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
808 }
809
810 void CodeInstaller::assumption_LeafType(Handle assumption) {
811 Handle context_handle = Assumptions_LeafType::context(assumption());
812 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
813
814 _dependencies->assert_leaf_type(context);
815 }
816
817 void CodeInstaller::assumption_ConcreteMethod(Handle assumption) {
818 Handle impl_handle = Assumptions_ConcreteMethod::impl(assumption());
819 Handle context_handle = Assumptions_ConcreteMethod::context(assumption());
820
821 methodHandle impl = getMethodFromHotSpotMethod(impl_handle());
822 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
823
824 _dependencies->assert_unique_concrete_method(context, impl());
825 }
826
827 void CodeInstaller::assumption_CallSiteTargetValue(Handle assumption) {
828 Handle callSite = Assumptions_CallSiteTargetValue::callSite(assumption());
829 Handle methodHandle = Assumptions_CallSiteTargetValue::methodHandle(assumption());
830
831 _dependencies->assert_call_site_target_value(callSite(), methodHandle());
832 }
833
834 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) {
835 jint handler_offset = site_ExceptionHandler::handlerPos(exc);
836
837 // Subtable header
838 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
839
840 // Subtable entry
841 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
842 }
843
844 // If deoptimization happens, the interpreter should reexecute these bytecodes.
845 // This function mainly helps the compilers to set up the reexecute bit.
846 static bool bytecode_should_reexecute(Bytecodes::Code code) {
847 switch (code) {
848 case Bytecodes::_invokedynamic:
849 case Bytecodes::_invokevirtual:
850 case Bytecodes::_invokeinterface:
851 case Bytecodes::_invokespecial:
852 case Bytecodes::_invokestatic:
853 return false;
854 default:
855 return true;
856 }
857 return true;
858 }
859
860 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) {
861 objArrayHandle virtualObjects = DebugInfo::virtualObjectMapping(debug_info);
862 if (virtualObjects.is_null()) {
863 return NULL;
864 }
865 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL);
866 // Create the unique ObjectValues
867 for (int i = 0; i < virtualObjects->length(); i++) {
868 Handle value = virtualObjects->obj_at(i);
869 int id = VirtualObject::id(value);
870 Handle type = VirtualObject::type(value);
871 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
872 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror)));
873 if (id < 0 || id >= objects->length()) {
874 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
875 }
876 if (objects->at(id) != NULL) {
877 JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
878 }
879 objects->at_put(id, sv);
880 }
881 // All the values which could be referenced by the VirtualObjects
882 // exist, so now describe all the VirtualObjects themselves.
883 for (int i = 0; i < virtualObjects->length(); i++) {
884 Handle value = virtualObjects->obj_at(i);
885 int id = VirtualObject::id(value);
886 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL);
887 }
888 _debug_recorder->dump_object_pool(objects);
889 return objects;
890 }
891
892 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, TRAPS) {
893 Handle position = DebugInfo::bytecodePosition(debug_info);
894 if (position.is_null()) {
895 // Stubs do not record scope info, just oop maps
896 return;
897 }
898
899 GrowableArray<ScopeValue*>* objectMapping;
900 if (scope_mode == CodeInstaller::FullFrame) {
901 objectMapping = record_virtual_objects(debug_info, CHECK);
902 } else {
903 objectMapping = NULL;
904 }
905 record_scope(pc_offset, position, scope_mode, objectMapping, CHECK);
906 }
907
908 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, TRAPS) {
909 Handle frame;
910 if (scope_mode == CodeInstaller::FullFrame) {
911 if (!position->is_a(BytecodeFrame::klass())) {
912 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
913 }
914 frame = position;
915 }
916 Handle caller_frame = BytecodePosition::caller(position);
917 if (caller_frame.not_null()) {
918 record_scope(pc_offset, caller_frame, scope_mode, objects, CHECK);
919 }
920
921 Handle hotspot_method = BytecodePosition::method(position);
922 Method* method = getMethodFromHotSpotMethod(hotspot_method());
923 jint bci = BytecodePosition::bci(position);
924 if (bci == BytecodeFrame::BEFORE_BCI()) {
925 bci = SynchronizationEntryBCI;
926 }
927
928 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
929
930 bool reexecute = false;
931 if (frame.not_null()) {
932 if (bci == SynchronizationEntryBCI){
933 reexecute = false;
934 } else {
935 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
936 reexecute = bytecode_should_reexecute(code);
937 if (frame.not_null()) {
938 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE);
939 }
940 }
941 }
942
943 DebugToken* locals_token = NULL;
944 DebugToken* expressions_token = NULL;
945 DebugToken* monitors_token = NULL;
946 bool throw_exception = false;
947
948 if (frame.not_null()) {
949 jint local_count = BytecodeFrame::numLocals(frame);
950 jint expression_count = BytecodeFrame::numStack(frame);
951 jint monitor_count = BytecodeFrame::numLocks(frame);
952 objArrayHandle values = BytecodeFrame::values(frame);
953 objArrayHandle slotKinds = BytecodeFrame::slotKinds(frame);
954
955 if (values.is_null() || slotKinds.is_null()) {
956 THROW(vmSymbols::java_lang_NullPointerException());
957 }
958 if (local_count + expression_count + monitor_count != values->length()) {
959 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count);
960 }
961 if (local_count + expression_count != slotKinds->length()) {
962 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count);
963 }
964
965 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
966 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
967 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
968
969 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length());
970 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
971
972 for (jint i = 0; i < values->length(); i++) {
973 ScopeValue* second = NULL;
974 Handle value = values->obj_at(i);
975 if (i < local_count) {
976 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
977 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
978 if (second != NULL) {
979 locals->append(second);
980 }
981 locals->append(first);
982 } else if (i < local_count + expression_count) {
983 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
984 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
985 if (second != NULL) {
986 expressions->append(second);
987 }
988 expressions->append(first);
989 } else {
990 MonitorValue *monitor = get_monitor_value(value, objects, CHECK);
991 monitors->append(monitor);
992 }
993 if (second != NULL) {
994 i++;
995 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) {
996 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
997 }
998 }
999 }
1000
1001 locals_token = _debug_recorder->create_scope_values(locals);
1002 expressions_token = _debug_recorder->create_scope_values(expressions);
1003 monitors_token = _debug_recorder->create_monitor_values(monitors);
1004
1005 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE;
1006 }
1007
1008 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, false,
1009 locals_token, expressions_token, monitors_token);
1010 }
1011
1012 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1013 Handle debug_info = site_Infopoint::debugInfo(site);
1014 if (debug_info.is_null()) {
1015 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1016 }
1017
1018 // address instruction = _instructions->start() + pc_offset;
1019 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1020 OopMap *map = create_oop_map(debug_info, CHECK);
1021 _debug_recorder->add_safepoint(pc_offset, map);
1022 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1023 _debug_recorder->end_safepoint(pc_offset);
1024 }
1025
1026 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1027 Handle debug_info = site_Infopoint::debugInfo(site);
1028 if (debug_info.is_null()) {
1029 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1030 }
1031
1032 // We'd like to check that pc_offset is greater than the
1033 // last pc recorded with _debug_recorder (raising an exception if not)
1034 // but DebugInformationRecorder doesn't have sufficient public API.
1035
1036 _debug_recorder->add_non_safepoint(pc_offset);
1037 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK);
1038 _debug_recorder->end_non_safepoint(pc_offset);
1039 }
1040
1041 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1042 Handle target = site_Call::target(site);
1043 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
1044
1045 Handle hotspot_method; // JavaMethod
1046 Handle foreign_call;
1047
1048 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
1049 foreign_call = target;
1050 } else {
1051 hotspot_method = target;
1052 }
1053
1054 Handle debug_info = site_Call::debugInfo(site);
1055
1056 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type");
1057
1058 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1059 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK);
1060
1061 if (debug_info.not_null()) {
1062 OopMap *map = create_oop_map(debug_info, CHECK);
1063 _debug_recorder->add_safepoint(next_pc_offset, map);
1064 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1065 }
1066
1067 if (foreign_call.not_null()) {
1068 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call);
1069 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK);
1070 } else { // method != NULL
1071 if (debug_info.is_null()) {
1072 JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1073 }
1074
1075 TRACE_jvmci_3("method call");
1076 CodeInstaller::pd_relocate_JavaMethod(hotspot_method, pc_offset, CHECK);
1077 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1078 // Need a static call stub for transitions from compiled to interpreted.
1079 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1080 }
1081 }
1082
1083 _next_call_type = INVOKE_INVALID;
1084
1085 if (debug_info.not_null()) {
1086 _debug_recorder->end_safepoint(next_pc_offset);
1087 }
1088 }
1089
1090 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1091 Handle reference = site_DataPatch::reference(site);
1092 if (reference.is_null()) {
1093 THROW(vmSymbols::java_lang_NullPointerException());
1094 } else if (reference->is_a(site_ConstantReference::klass())) {
1095 Handle constant = site_ConstantReference::constant(reference);
1096 if (constant.is_null()) {
1097 THROW(vmSymbols::java_lang_NullPointerException());
1098 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
1099 pd_patch_OopConstant(pc_offset, constant, CHECK);
1100 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
1101 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK);
1102 } else {
1103 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name());
1104 }
1105 } else if (reference->is_a(site_DataSectionReference::klass())) {
1106 int data_offset = site_DataSectionReference::offset(reference);
1107 if (0 <= data_offset && data_offset < _constants_size) {
1108 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK);
1109 } else {
1110 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1111 }
1112 } else {
1113 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name());
1114 }
1115 }
1116
1117 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1118 Handle id_obj = site_Mark::id(site);
1119
1120 if (id_obj.not_null()) {
1121 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) {
1122 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name());
1123 }
1124 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
1125
1126 address pc = _instructions->start() + pc_offset;
1127
1128 switch (id) {
1129 case UNVERIFIED_ENTRY:
1130 _offsets.set_value(CodeOffsets::Entry, pc_offset);
1131 break;
1132 case VERIFIED_ENTRY:
1133 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1134 break;
1135 case OSR_ENTRY:
1136 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1137 break;
1138 case EXCEPTION_HANDLER_ENTRY:
1139 _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1140 break;
1141 case DEOPT_HANDLER_ENTRY:
1142 _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1143 break;
1144 case INVOKEVIRTUAL:
1145 case INVOKEINTERFACE:
1146 case INLINE_INVOKE:
1147 case INVOKESTATIC:
1148 case INVOKESPECIAL:
1149 _next_call_type = (MarkId) id;
1150 _invoke_mark_pc = pc;
1151 break;
1152 case POLL_NEAR:
1153 case POLL_FAR:
1154 case POLL_RETURN_NEAR:
1155 case POLL_RETURN_FAR:
1156 pd_relocate_poll(pc, id, CHECK);
1157 break;
1158 case CARD_TABLE_SHIFT:
1159 case CARD_TABLE_ADDRESS:
1160 case HEAP_TOP_ADDRESS:
1161 case HEAP_END_ADDRESS:
1162 case NARROW_KLASS_BASE_ADDRESS:
1163 case CRC_TABLE_ADDRESS:
1164 break;
1165 default:
1166 JVMCI_ERROR("invalid mark id: %d", id);
1167 break;
1168 }
1169 }
1170 }
1171