1 /*
2 * Copyright (c) 2011, 2019, 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 "jvmci/jvmciCodeInstaller.hpp"
28 #include "jvmci/jvmciCompilerToVM.hpp"
29 #include "jvmci/jvmciRuntime.hpp"
30 #include "memory/universe.hpp"
31 #include "oops/compressedOops.inline.hpp"
32 #include "runtime/interfaceSupport.inline.hpp"
33 #include "runtime/jniHandles.inline.hpp"
34 #include "runtime/sharedRuntime.hpp"
35 #include "utilities/align.hpp"
36
37 // frequently used constants
38 // Allocate them with new so they are never destroyed (otherwise, a
39 // forced exit could destroy these objects while they are still in
40 // use).
41 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtJVMCI) ConstantOopWriteValue(NULL);
42 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtJVMCI) ConstantIntValue(-1);
43 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtJVMCI) ConstantIntValue((jint)0);
44 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtJVMCI) ConstantIntValue(1);
45 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtJVMCI) ConstantIntValue(2);
46 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtJVMCI) LocationValue(Location());
47
48 VMReg CodeInstaller::getVMRegFromLocation(JVMCIObject location, int total_frame_size, JVMCI_TRAPS) {
49 if (location.is_null()) {
50 JVMCI_THROW_NULL(NullPointerException);
51 }
52
53 JVMCIObject reg = jvmci_env()->get_code_Location_reg(location);
54 jint offset = jvmci_env()->get_code_Location_offset(location);
55
56 if (reg.is_non_null()) {
57 // register
58 jint number = jvmci_env()->get_code_Register_number(reg);
59 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, JVMCI_CHECK_NULL);
60 if (offset % 4 == 0) {
61 return vmReg->next(offset / 4);
62 } else {
63 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset);
64 }
65 } else {
66 // stack slot
67 if (offset % 4 == 0) {
68 VMReg vmReg = VMRegImpl::stack2reg(offset / 4);
69 if (!OopMapValue::legal_vm_reg_name(vmReg)) {
70 // This restriction only applies to VMRegs that are used in OopMap but
71 // since that's the only use of VMRegs it's simplest to put this test
72 // here. This test should also be equivalent legal_vm_reg_name but JVMCI
73 // clients can use max_oop_map_stack_stack_offset to detect this problem
74 // directly. The asserts just ensure that the tests are in agreement.
75 assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg");
76 JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)",
77 offset, CompilerToVM::Data::max_oop_map_stack_offset());
78 }
79 assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg");
80 return vmReg;
81 } else {
82 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
83 }
84 }
85 }
86
87 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo
88 OopMap* CodeInstaller::create_oop_map(JVMCIObject debug_info, JVMCI_TRAPS) {
89 JVMCIObject reference_map = jvmci_env()->get_DebugInfo_referenceMap(debug_info);
90 if (reference_map.is_null()) {
91 JVMCI_THROW_NULL(NullPointerException);
92 }
93 if (!jvmci_env()->isa_HotSpotReferenceMap(reference_map)) {
94 JVMCI_ERROR_NULL("unknown reference map: %s", jvmci_env()->klass_name(reference_map));
95 }
96 if (!_has_wide_vector && SharedRuntime::is_wide_vector(jvmci_env()->get_HotSpotReferenceMap_maxRegisterSize(reference_map))) {
97 if (SharedRuntime::polling_page_vectors_safepoint_handler_blob() == NULL) {
98 JVMCI_ERROR_NULL("JVMCI is producing code using vectors larger than the runtime supports");
99 }
100 _has_wide_vector = true;
101 }
102 OopMap* map = new OopMap(_total_frame_size, _parameter_count);
103 JVMCIObjectArray objects = jvmci_env()->get_HotSpotReferenceMap_objects(reference_map);
104 JVMCIObjectArray derivedBase = jvmci_env()->get_HotSpotReferenceMap_derivedBase(reference_map);
105 JVMCIPrimitiveArray sizeInBytes = jvmci_env()->get_HotSpotReferenceMap_sizeInBytes(reference_map);
106 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
107 JVMCI_THROW_NULL(NullPointerException);
108 }
109 if (JVMCIENV->get_length(objects) != JVMCIENV->get_length(derivedBase) || JVMCIENV->get_length(objects) != JVMCIENV->get_length(sizeInBytes)) {
110 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", JVMCIENV->get_length(objects), JVMCIENV->get_length(derivedBase), JVMCIENV->get_length(sizeInBytes));
111 }
112 for (int i = 0; i < JVMCIENV->get_length(objects); i++) {
113 JVMCIObject location = JVMCIENV->get_object_at(objects, i);
114 JVMCIObject baseLocation = JVMCIENV->get_object_at(derivedBase, i);
115 jint bytes = JVMCIENV->get_int_at(sizeInBytes, i);
116
117 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, JVMCI_CHECK_NULL);
118 if (baseLocation.is_non_null()) {
119 // derived oop
120 #ifdef _LP64
121 if (bytes == 8) {
122 #else
123 if (bytes == 4) {
124 #endif
125 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, JVMCI_CHECK_NULL);
126 map->set_derived_oop(vmReg, baseReg);
127 } else {
128 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
129 }
130 #ifdef _LP64
131 } else if (bytes == 8) {
132 // wide oop
133 map->set_oop(vmReg);
134 } else if (bytes == 4) {
135 // narrow oop
136 map->set_narrowoop(vmReg);
137 #else
138 } else if (bytes == 4) {
139 map->set_oop(vmReg);
140 #endif
141 } else {
142 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
143 }
144 }
145
146 JVMCIObject callee_save_info = jvmci_env()->get_DebugInfo_calleeSaveInfo(debug_info);
147 if (callee_save_info.is_non_null()) {
148 JVMCIObjectArray registers = jvmci_env()->get_RegisterSaveLayout_registers(callee_save_info);
149 JVMCIPrimitiveArray slots = jvmci_env()->get_RegisterSaveLayout_slots(callee_save_info);
150 for (jint i = 0; i < JVMCIENV->get_length(slots); i++) {
151 JVMCIObject jvmci_reg = JVMCIENV->get_object_at(registers, i);
152 jint jvmci_reg_number = jvmci_env()->get_code_Register_number(jvmci_reg);
153 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, JVMCI_CHECK_NULL);
154 // HotSpot stack slots are 4 bytes
155 jint jvmci_slot = JVMCIENV->get_int_at(slots, i);
156 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
157 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
158 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
159 #ifdef _LP64
160 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
161 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
162 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
163 #endif
164 }
165 }
166 return map;
167 }
168
169 #if INCLUDE_AOT
170 AOTOopRecorder::AOTOopRecorder(CodeInstaller* code_inst, Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) {
171 _code_inst = code_inst;
172 _meta_refs = new GrowableArray<jobject>();
173 }
174
175 int AOTOopRecorder::nr_meta_refs() const {
176 return _meta_refs->length();
177 }
178
179 jobject AOTOopRecorder::meta_element(int pos) const {
180 return _meta_refs->at(pos);
181 }
182
183 int AOTOopRecorder::find_index(Metadata* h) {
184 JavaThread* THREAD = JavaThread::current();
185 JVMCIEnv* JVMCIENV = _code_inst->jvmci_env();
186 int oldCount = metadata_count();
187 int index = this->OopRecorder::find_index(h);
188 int newCount = metadata_count();
189
190 if (oldCount == newCount) {
191 // found a match
192 return index;
193 }
194
195 vmassert(index + 1 == newCount, "must be last");
196
197 JVMCIKlassHandle klass(THREAD);
198 JVMCIObject result;
199 guarantee(h != NULL,
200 "If DebugInformationRecorder::describe_scope passes NULL oldCount == newCount must hold.");
201 if (h->is_klass()) {
202 klass = (Klass*) h;
203 result = JVMCIENV->get_jvmci_type(klass, JVMCI_CATCH);
204 } else if (h->is_method()) {
205 Method* method = (Method*) h;
206 methodHandle mh(method);
207 result = JVMCIENV->get_jvmci_method(method, JVMCI_CATCH);
208 }
209 jobject ref = JVMCIENV->get_jobject(result);
210 record_meta_ref(ref, index);
211
212 return index;
213 }
214
215 int AOTOopRecorder::find_index(jobject h) {
216 if (h == NULL) {
217 return 0;
218 }
219 oop javaMirror = JNIHandles::resolve(h);
220 Klass* klass = java_lang_Class::as_Klass(javaMirror);
221 return find_index(klass);
222 }
223
224 void AOTOopRecorder::record_meta_ref(jobject o, int index) {
225 assert(index > 0, "must be 1..n");
226 index -= 1; // reduce by one to convert to array index
227
228 assert(index == _meta_refs->length(), "must be last");
229 _meta_refs->append(o);
230 }
231 #endif // INCLUDE_AOT
232
233 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, JVMCIObject constant, JVMCI_TRAPS) {
234 /*
235 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
236 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
237 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
238 * base class (Metadata* or MetaspaceObj*).
239 */
240 JVMCIObject obj = jvmci_env()->get_HotSpotMetaspaceConstantImpl_metaspaceObject(constant);
241 if (jvmci_env()->isa_HotSpotResolvedObjectTypeImpl(obj)) {
242 Klass* klass = JVMCIENV->asKlass(obj);
243 assert(!jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
244 int index = _oop_recorder->find_index(klass);
245 section->relocate(dest, metadata_Relocation::spec(index));
246 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
247 return klass;
248 } else if (jvmci_env()->isa_HotSpotResolvedJavaMethodImpl(obj)) {
249 Method* method = jvmci_env()->asMethod(obj);
250 assert(!jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
251 int index = _oop_recorder->find_index(method);
252 section->relocate(dest, metadata_Relocation::spec(index));
253 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
254 return method;
255 } else {
256 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", jvmci_env()->klass_name(obj));
257 }
258 }
259
260 #ifdef _LP64
261 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, JVMCIObject constant, JVMCI_TRAPS) {
262 JVMCIObject obj = jvmci_env()->get_HotSpotMetaspaceConstantImpl_metaspaceObject(constant);
263 assert(jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant), "unexpected uncompressed pointer");
264
265 if (!jvmci_env()->isa_HotSpotResolvedObjectTypeImpl(obj)) {
266 JVMCI_ERROR_0("unexpected compressed pointer of type %s", jvmci_env()->klass_name(obj));
267 }
268
269 Klass* klass = JVMCIENV->asKlass(obj);
270 int index = _oop_recorder->find_index(klass);
271 section->relocate(dest, metadata_Relocation::spec(index));
272 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
273 return CompressedKlassPointers::encode(klass);
274 }
275 #endif
276
277 Location::Type CodeInstaller::get_oop_type(JVMCIObject value) {
278 JVMCIObject valueKind = jvmci_env()->get_Value_valueKind(value);
279 JVMCIObject platformKind = jvmci_env()->get_ValueKind_platformKind(valueKind);
280
281 if (jvmci_env()->equals(platformKind, word_kind())) {
282 return Location::oop;
283 } else {
284 return Location::narrowoop;
285 }
286 }
287
288 ScopeValue* CodeInstaller::get_scope_value(JVMCIObject value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, JVMCI_TRAPS) {
289 second = NULL;
290 if (value.is_null()) {
291 JVMCI_THROW_NULL(NullPointerException);
292 } else if (JVMCIENV->equals(value, jvmci_env()->get_Value_ILLEGAL())) {
293 if (type != T_ILLEGAL) {
294 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
295 }
296 return _illegal_value;
297 } else if (jvmci_env()->isa_RegisterValue(value)) {
298 JVMCIObject reg = jvmci_env()->get_RegisterValue_reg(value);
299 jint number = jvmci_env()->get_code_Register_number(reg);
300 VMReg hotspotRegister = get_hotspot_reg(number, JVMCI_CHECK_NULL);
301 if (is_general_purpose_reg(hotspotRegister)) {
302 Location::Type locationType;
303 if (type == T_OBJECT) {
304 locationType = get_oop_type(value);
305 } else if (type == T_LONG) {
306 locationType = Location::lng;
307 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
308 locationType = Location::int_in_long;
309 } else {
310 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
311 }
312 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
313 if (type == T_LONG) {
314 second = value;
315 }
316 return value;
317 } else {
318 Location::Type locationType;
319 if (type == T_FLOAT) {
320 // this seems weird, but the same value is used in c1_LinearScan
321 locationType = Location::normal;
322 } else if (type == T_DOUBLE) {
323 locationType = Location::dbl;
324 } else {
325 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
326 }
327 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
328 if (type == T_DOUBLE) {
329 second = value;
330 }
331 return value;
332 }
333 } else if (jvmci_env()->isa_StackSlot(value)) {
334 jint offset = jvmci_env()->get_StackSlot_offset(value);
335 if (jvmci_env()->get_StackSlot_addFrameSize(value)) {
336 offset += _total_frame_size;
337 }
338
339 Location::Type locationType;
340 if (type == T_OBJECT) {
341 locationType = get_oop_type(value);
342 } else if (type == T_LONG) {
343 locationType = Location::lng;
344 } else if (type == T_DOUBLE) {
345 locationType = Location::dbl;
346 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
347 locationType = Location::normal;
348 } else {
349 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
350 }
351 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
352 if (type == T_DOUBLE || type == T_LONG) {
353 second = value;
354 }
355 return value;
356 } else if (jvmci_env()->isa_JavaConstant(value)) {
357 if (jvmci_env()->isa_PrimitiveConstant(value)) {
358 if (jvmci_env()->isa_RawConstant(value)) {
359 jlong prim = jvmci_env()->get_PrimitiveConstant_primitive(value);
360 return new ConstantLongValue(prim);
361 } else {
362 BasicType constantType = jvmci_env()->kindToBasicType(jvmci_env()->get_PrimitiveConstant_kind(value), JVMCI_CHECK_NULL);
363 if (type != constantType) {
364 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
365 }
366 if (type == T_INT || type == T_FLOAT) {
367 jint prim = (jint)jvmci_env()->get_PrimitiveConstant_primitive(value);
368 switch (prim) {
369 case -1: return _int_m1_scope_value;
370 case 0: return _int_0_scope_value;
371 case 1: return _int_1_scope_value;
372 case 2: return _int_2_scope_value;
373 default: return new ConstantIntValue(prim);
374 }
375 } else if (type == T_LONG || type == T_DOUBLE) {
376 jlong prim = jvmci_env()->get_PrimitiveConstant_primitive(value);
377 second = _int_1_scope_value;
378 return new ConstantLongValue(prim);
379 } else {
380 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
381 }
382 }
383 } else if (jvmci_env()->isa_NullConstant(value) || jvmci_env()->isa_HotSpotCompressedNullConstant(value)) {
384 if (type == T_OBJECT) {
385 return _oop_null_scope_value;
386 } else {
387 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
388 }
389 } else if (jvmci_env()->isa_HotSpotObjectConstantImpl(value)) {
390 if (type == T_OBJECT) {
391 Handle obj = jvmci_env()->asConstant(value, JVMCI_CHECK_NULL);
392 if (obj == NULL) {
393 JVMCI_ERROR_NULL("null value must be in NullConstant");
394 }
395 return new ConstantOopWriteValue(JNIHandles::make_local(obj()));
396 } else {
397 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
398 }
399 }
400 } else if (jvmci_env()->isa_VirtualObject(value)) {
401 if (type == T_OBJECT) {
402 int id = jvmci_env()->get_VirtualObject_id(value);
403 if (0 <= id && id < objects->length()) {
404 ScopeValue* object = objects->at(id);
405 if (object != NULL) {
406 return object;
407 }
408 }
409 JVMCI_ERROR_NULL("unknown virtual object id %d", id);
410 } else {
411 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
412 }
413 }
414
415 JVMCI_ERROR_NULL("unexpected value in scope: %s", jvmci_env()->klass_name(value))
416 }
417
418 void CodeInstaller::record_object_value(ObjectValue* sv, JVMCIObject value, GrowableArray<ScopeValue*>* objects, JVMCI_TRAPS) {
419 JVMCIObject type = jvmci_env()->get_VirtualObject_type(value);
420 int id = jvmci_env()->get_VirtualObject_id(value);
421 Klass* klass = JVMCIENV->asKlass(type);
422 bool isLongArray = klass == Universe::longArrayKlassObj();
423
424 JVMCIObjectArray values = jvmci_env()->get_VirtualObject_values(value);
425 JVMCIObjectArray slotKinds = jvmci_env()->get_VirtualObject_slotKinds(value);
426 for (jint i = 0; i < JVMCIENV->get_length(values); i++) {
427 ScopeValue* cur_second = NULL;
428 JVMCIObject object = JVMCIENV->get_object_at(values, i);
429 BasicType type = jvmci_env()->kindToBasicType(JVMCIENV->get_object_at(slotKinds, i), JVMCI_CHECK);
430 ScopeValue* value = get_scope_value(object, type, objects, cur_second, JVMCI_CHECK);
431
432 if (isLongArray && cur_second == NULL) {
433 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
434 // add an int 0 constant
435 cur_second = _int_0_scope_value;
436 }
437
438 if (cur_second != NULL) {
439 sv->field_values()->append(cur_second);
440 }
441 assert(value != NULL, "missing value");
442 sv->field_values()->append(value);
443 }
444 }
445
446 MonitorValue* CodeInstaller::get_monitor_value(JVMCIObject value, GrowableArray<ScopeValue*>* objects, JVMCI_TRAPS) {
447 if (value.is_null()) {
448 JVMCI_THROW_NULL(NullPointerException);
449 }
450 if (!jvmci_env()->isa_StackLockValue(value)) {
451 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", jvmci_env()->klass_name(value));
452 }
453
454 ScopeValue* second = NULL;
455 ScopeValue* owner_value = get_scope_value(jvmci_env()->get_StackLockValue_owner(value), T_OBJECT, objects, second, JVMCI_CHECK_NULL);
456 assert(second == NULL, "monitor cannot occupy two stack slots");
457
458 ScopeValue* lock_data_value = get_scope_value(jvmci_env()->get_StackLockValue_slot(value), T_LONG, objects, second, JVMCI_CHECK_NULL);
459 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
460 assert(lock_data_value->is_location(), "invalid monitor location");
461 Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
462
463 bool eliminated = false;
464 if (jvmci_env()->get_StackLockValue_eliminated(value)) {
465 eliminated = true;
466 }
467
468 return new MonitorValue(owner_value, lock_data_loc, eliminated);
469 }
470
471 void CodeInstaller::initialize_dependencies(JVMCIObject compiled_code, OopRecorder* oop_recorder, JVMCI_TRAPS) {
472 JavaThread* thread = JavaThread::current();
473 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
474 _oop_recorder = oop_recorder;
475 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
476 JVMCIObjectArray assumptions = jvmci_env()->get_HotSpotCompiledCode_assumptions(compiled_code);
477 if (assumptions.is_non_null()) {
478 int length = JVMCIENV->get_length(assumptions);
479 for (int i = 0; i < length; ++i) {
480 JVMCIObject assumption = JVMCIENV->get_object_at(assumptions, i);
481 if (assumption.is_non_null()) {
482 if (jvmci_env()->isa_Assumptions_NoFinalizableSubclass(assumption)) {
483 assumption_NoFinalizableSubclass(assumption);
484 } else if (jvmci_env()->isa_Assumptions_ConcreteSubtype(assumption)) {
485 assumption_ConcreteSubtype(assumption);
486 } else if (jvmci_env()->isa_Assumptions_LeafType(assumption)) {
487 assumption_LeafType(assumption);
488 } else if (jvmci_env()->isa_Assumptions_ConcreteMethod(assumption)) {
489 assumption_ConcreteMethod(assumption);
490 } else if (jvmci_env()->isa_Assumptions_CallSiteTargetValue(assumption)) {
491 assumption_CallSiteTargetValue(assumption, JVMCI_CHECK);
492 } else {
493 JVMCI_ERROR("unexpected Assumption subclass %s", jvmci_env()->klass_name(assumption));
494 }
495 }
496 }
497 }
498 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
499 JVMCIObjectArray methods = jvmci_env()->get_HotSpotCompiledCode_methods(compiled_code);
500 if (methods.is_non_null()) {
501 int length = JVMCIENV->get_length(methods);
502 for (int i = 0; i < length; ++i) {
503 JVMCIObject method_handle = JVMCIENV->get_object_at(methods, i);
504 methodHandle method = jvmci_env()->asMethod(method_handle);
505 _dependencies->assert_evol_method(method());
506 }
507 }
508 }
509 }
510
511 #if INCLUDE_AOT
512 RelocBuffer::~RelocBuffer() {
513 if (_buffer != NULL) {
514 FREE_C_HEAP_ARRAY(char, _buffer);
515 }
516 }
517
518 address RelocBuffer::begin() const {
519 if (_buffer != NULL) {
520 return (address) _buffer;
521 }
522 return (address) _static_buffer;
523 }
524
525 void RelocBuffer::set_size(size_t bytes) {
526 assert(bytes <= _size, "can't grow in size!");
527 _size = bytes;
528 }
529
530 void RelocBuffer::ensure_size(size_t bytes) {
531 assert(_buffer == NULL, "can only be used once");
532 assert(_size == 0, "can only be used once");
533 if (bytes >= RelocBuffer::stack_size) {
534 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtJVMCI);
535 }
536 _size = bytes;
537 }
538
539 JVMCI::CodeInstallResult CodeInstaller::gather_metadata(JVMCIObject target, JVMCIObject compiled_code, CodeMetadata& metadata, JVMCI_TRAPS) {
540 assert(JVMCIENV->is_hotspot(), "AOT code is executed only in HotSpot mode");
541 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
542 AOTOopRecorder* recorder = new AOTOopRecorder(this, &_arena, true);
543 initialize_dependencies(compiled_code, recorder, JVMCI_CHECK_OK);
544
545 metadata.set_oop_recorder(recorder);
546
547 // Get instructions and constants CodeSections early because we need it.
548 _instructions = buffer.insts();
549 _constants = buffer.consts();
550 buffer.set_immutable_PIC(_immutable_pic_compilation);
551
552 initialize_fields(target, compiled_code, JVMCI_CHECK_OK);
553 JVMCI::CodeInstallResult result = initialize_buffer(buffer, false, JVMCI_CHECK_OK);
554 if (result != JVMCI::ok) {
555 return result;
556 }
557
558 _debug_recorder->pcs_size(); // create the sentinel record
559
560 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
561
562 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
563 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
564 metadata.set_exception_table(&_exception_handler_table);
565 metadata.set_implicit_exception_table(&_implicit_exception_table);
566
567 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
568
569 reloc_buffer->ensure_size(buffer.total_relocation_size());
570 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
571 reloc_buffer->set_size(size);
572 return JVMCI::ok;
573 }
574 #endif // INCLUDE_AOT
575
576 // constructor used to create a method
577 JVMCI::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler,
578 JVMCIObject target,
579 JVMCIObject compiled_code,
580 CodeBlob*& cb,
581 JVMCIObject installed_code,
582 FailedSpeculation** failed_speculations,
583 char* speculations,
584 int speculations_len,
585 JVMCI_TRAPS) {
586
587 CodeBuffer buffer("JVMCI Compiler CodeBuffer");
588 OopRecorder* recorder = new OopRecorder(&_arena, true);
589 initialize_dependencies(compiled_code, recorder, JVMCI_CHECK_OK);
590
591 // Get instructions and constants CodeSections early because we need it.
592 _instructions = buffer.insts();
593 _constants = buffer.consts();
594 #if INCLUDE_AOT
595 buffer.set_immutable_PIC(_immutable_pic_compilation);
596 #endif
597
598 initialize_fields(target, compiled_code, JVMCI_CHECK_OK);
599 JVMCI::CodeInstallResult result = initialize_buffer(buffer, true, JVMCI_CHECK_OK);
600 if (result != JVMCI::ok) {
601 return result;
602 }
603
604 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
605
606 if (!jvmci_env()->isa_HotSpotCompiledNmethod(compiled_code)) {
607 JVMCIObject stubName = jvmci_env()->get_HotSpotCompiledCode_name(compiled_code);
608 if (stubName.is_null()) {
609 JVMCI_ERROR_OK("stub should have a name");
610 }
611 char* name = strdup(jvmci_env()->as_utf8_string(stubName));
612 cb = RuntimeStub::new_runtime_stub(name,
613 &buffer,
614 CodeOffsets::frame_never_safe,
615 stack_slots,
616 _debug_recorder->_oopmaps,
617 false);
618 result = JVMCI::ok;
619 } else {
620 JVMCICompileState* compile_state = (JVMCICompileState*) (address) jvmci_env()->get_HotSpotCompiledNmethod_compileState(compiled_code);
621 if (compile_state != NULL) {
622 jvmci_env()->set_compile_state(compile_state);
623 }
624
625 methodHandle method = jvmci_env()->asMethod(jvmci_env()->get_HotSpotCompiledNmethod_method(compiled_code));
626 jint entry_bci = jvmci_env()->get_HotSpotCompiledNmethod_entryBCI(compiled_code);
627 bool has_unsafe_access = jvmci_env()->get_HotSpotCompiledNmethod_hasUnsafeAccess(compiled_code) == JNI_TRUE;
628 jint id = jvmci_env()->get_HotSpotCompiledNmethod_id(compiled_code);
629 if (id == -1) {
630 // Make sure a valid compile_id is associated with every compile
631 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
632 jvmci_env()->set_HotSpotCompiledNmethod_id(compiled_code, id);
633 }
634 if (!jvmci_env()->isa_HotSpotNmethod(installed_code)) {
635 JVMCI_THROW_MSG_(IllegalArgumentException, "InstalledCode object must be a HotSpotNmethod when installing a HotSpotCompiledNmethod", JVMCI::ok);
636 }
637
638 JVMCIObject mirror = installed_code;
639 nmethod* nm = NULL;
640 result = runtime()->register_method(jvmci_env(), method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
641 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table, &_implicit_exception_table,
642 compiler, _debug_recorder, _dependencies, id,
643 has_unsafe_access, _has_wide_vector, compiled_code, mirror,
644 failed_speculations, speculations, speculations_len);
645 cb = nm->as_codeblob_or_null();
646 if (nm != NULL && compile_state == NULL) {
647 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
648 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
649 if (!printnmethods && (PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers)) {
650 nm->print_nmethod(printnmethods);
651 }
652 DirectivesStack::release(directive);
653 }
654 }
655
656 if (cb != NULL) {
657 // Make sure the pre-calculated constants section size was correct.
658 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
659 }
660 return result;
661 }
662
663 void CodeInstaller::initialize_fields(JVMCIObject target, JVMCIObject compiled_code, JVMCI_TRAPS) {
664 if (jvmci_env()->isa_HotSpotCompiledNmethod(compiled_code)) {
665 JVMCIObject hotspotJavaMethod = jvmci_env()->get_HotSpotCompiledNmethod_method(compiled_code);
666 methodHandle method = jvmci_env()->asMethod(hotspotJavaMethod);
667 _parameter_count = method->size_of_parameters();
668 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
669 } else {
670 // Must be a HotSpotCompiledRuntimeStub.
671 // Only used in OopMap constructor for non-product builds
672 _parameter_count = 0;
673 }
674 _sites_handle = jvmci_env()->get_HotSpotCompiledCode_sites(compiled_code);
675
676 _code_handle = jvmci_env()->get_HotSpotCompiledCode_targetCode(compiled_code);
677 _code_size = jvmci_env()->get_HotSpotCompiledCode_targetCodeSize(compiled_code);
678 _total_frame_size = jvmci_env()->get_HotSpotCompiledCode_totalFrameSize(compiled_code);
679
680 JVMCIObject deoptRescueSlot = jvmci_env()->get_HotSpotCompiledCode_deoptRescueSlot(compiled_code);
681 if (deoptRescueSlot.is_null()) {
682 _orig_pc_offset = -1;
683 } else {
684 _orig_pc_offset = jvmci_env()->get_StackSlot_offset(deoptRescueSlot);
685 if (jvmci_env()->get_StackSlot_addFrameSize(deoptRescueSlot)) {
686 _orig_pc_offset += _total_frame_size;
687 }
688 if (_orig_pc_offset < 0) {
689 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
690 }
691 }
692
693 // Pre-calculate the constants section size. This is required for PC-relative addressing.
694 _data_section_handle = jvmci_env()->get_HotSpotCompiledCode_dataSection(compiled_code);
695 if ((_constants->alignment() % jvmci_env()->get_HotSpotCompiledCode_dataSectionAlignment(compiled_code)) != 0) {
696 JVMCI_ERROR("invalid data section alignment: %d", jvmci_env()->get_HotSpotCompiledCode_dataSectionAlignment(compiled_code));
697 }
698 _constants_size = JVMCIENV->get_length(data_section());
699
700 _data_section_patches_handle = jvmci_env()->get_HotSpotCompiledCode_dataSectionPatches(compiled_code);
701
702 #ifndef PRODUCT
703 _comments_handle = jvmci_env()->get_HotSpotCompiledCode_comments(compiled_code);
704 #endif
705
706 _next_call_type = INVOKE_INVALID;
707
708 _has_wide_vector = false;
709
710 JVMCIObject arch = jvmci_env()->get_TargetDescription_arch(target);
711 _word_kind_handle = jvmci_env()->get_Architecture_wordKind(arch);
712 }
713
714 int CodeInstaller::estimate_stubs_size(JVMCI_TRAPS) {
715 // Estimate the number of static and aot call stubs that might be emitted.
716 int static_call_stubs = 0;
717 int aot_call_stubs = 0;
718 int trampoline_stubs = 0;
719 JVMCIObjectArray sites = this->sites();
720 for (int i = 0; i < JVMCIENV->get_length(sites); i++) {
721 JVMCIObject site = JVMCIENV->get_object_at(sites, i);
722 if (!site.is_null()) {
723 if (jvmci_env()->isa_site_Mark(site)) {
724 JVMCIObject id_obj = jvmci_env()->get_site_Mark_id(site);
725 if (id_obj.is_non_null()) {
726 if (!jvmci_env()->is_boxing_object(T_INT, id_obj)) {
727 JVMCI_ERROR_0("expected Integer id, got %s", jvmci_env()->klass_name(id_obj));
728 }
729 jint id = jvmci_env()->get_boxed_value(T_INT, id_obj).i;
730 switch (id) {
731 case INVOKEINTERFACE:
732 case INVOKEVIRTUAL:
733 trampoline_stubs++;
734 break;
735 case INVOKESTATIC:
736 case INVOKESPECIAL:
737 static_call_stubs++;
738 trampoline_stubs++;
739 break;
740 default:
741 break;
742 }
743 }
744 }
745 #if INCLUDE_AOT
746 if (UseAOT && jvmci_env()->isa_site_Call(site)) {
747 JVMCIObject target = jvmci_env()-> get_site_Call_target(site);
748 if (!jvmci_env()->isa_HotSpotForeignCallTarget(target)) {
749 // Add far aot trampolines.
750 aot_call_stubs++;
751 }
752 }
753 #endif
754 }
755 }
756 int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size();
757 size += trampoline_stubs * CompiledStaticCall::to_trampoline_stub_size();
758 #if INCLUDE_AOT
759 size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size();
760 #endif
761 return size;
762 }
763
764 // perform data and call relocation on the CodeBuffer
765 JVMCI::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, JVMCI_TRAPS) {
766 HandleMark hm;
767 JVMCIObjectArray sites = this->sites();
768 int locs_buffer_size = JVMCIENV->get_length(sites) * (relocInfo::length_limit + sizeof(relocInfo));
769
770 // Allocate enough space in the stub section for the static call
771 // stubs. Stubs have extra relocs but they are managed by the stub
772 // section itself so they don't need to be accounted for in the
773 // locs_buffer above.
774 int stubs_size = estimate_stubs_size(JVMCI_CHECK_OK);
775 int total_size = align_up(_code_size, buffer.insts()->alignment()) + align_up(_constants_size, buffer.consts()->alignment()) + align_up(stubs_size, buffer.stubs()->alignment());
776
777 if (check_size && total_size > JVMCINMethodSizeLimit) {
778 return JVMCI::code_too_large;
779 }
780
781 buffer.initialize(total_size, locs_buffer_size);
782 if (buffer.blob() == NULL) {
783 return JVMCI::cache_full;
784 }
785 buffer.initialize_stubs_size(stubs_size);
786 buffer.initialize_consts_size(_constants_size);
787
788 _debug_recorder = new DebugInformationRecorder(_oop_recorder);
789 _debug_recorder->set_oopmaps(new OopMapSet());
790
791 buffer.initialize_oop_recorder(_oop_recorder);
792
793 // copy the constant data into the newly created CodeBuffer
794 address end_data = _constants->start() + _constants_size;
795 JVMCIENV->copy_bytes_to(data_section(), (jbyte*) _constants->start(), 0, _constants_size);
796 _constants->set_end(end_data);
797
798 // copy the code into the newly created CodeBuffer
799 address end_pc = _instructions->start() + _code_size;
800 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
801 JVMCIENV->copy_bytes_to(code(), (jbyte*) _instructions->start(), 0, _code_size);
802 _instructions->set_end(end_pc);
803
804 for (int i = 0; i < JVMCIENV->get_length(data_section_patches()); i++) {
805 // HandleMark hm(THREAD);
806 JVMCIObject patch = JVMCIENV->get_object_at(data_section_patches(), i);
807 if (patch.is_null()) {
808 JVMCI_THROW_(NullPointerException, JVMCI::ok);
809 }
810 JVMCIObject reference = jvmci_env()->get_site_DataPatch_reference(patch);
811 if (reference.is_null()) {
812 JVMCI_THROW_(NullPointerException, JVMCI::ok);
813 }
814 if (!jvmci_env()->isa_site_ConstantReference(reference)) {
815 JVMCI_ERROR_OK("invalid patch in data section: %s", jvmci_env()->klass_name(reference));
816 }
817 JVMCIObject constant = jvmci_env()->get_site_ConstantReference_constant(reference);
818 if (constant.is_null()) {
819 JVMCI_THROW_(NullPointerException, JVMCI::ok);
820 }
821 address dest = _constants->start() + jvmci_env()->get_site_Site_pcOffset(patch);
822 if (jvmci_env()->isa_HotSpotMetaspaceConstantImpl(constant)) {
823 if (jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant)) {
824 #ifdef _LP64
825 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, JVMCI_CHECK_OK);
826 #else
827 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
828 #endif
829 } else {
830 *((void**) dest) = record_metadata_reference(_constants, dest, constant, JVMCI_CHECK_OK);
831 }
832 } else if (jvmci_env()->isa_HotSpotObjectConstantImpl(constant)) {
833 Handle obj = jvmci_env()->asConstant(constant, JVMCI_CHECK_OK);
834 jobject value = JNIHandles::make_local(obj());
835 int oop_index = _oop_recorder->find_index(value);
836
837 if (jvmci_env()->get_HotSpotObjectConstantImpl_compressed(constant)) {
838 #ifdef _LP64
839 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
840 #else
841 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
842 #endif
843 } else {
844 _constants->relocate(dest, oop_Relocation::spec(oop_index));
845 }
846 } else {
847 JVMCI_ERROR_OK("invalid constant in data section: %s", jvmci_env()->klass_name(constant));
848 }
849 }
850 jint last_pc_offset = -1;
851 for (int i = 0; i < JVMCIENV->get_length(sites); i++) {
852 // HandleMark hm(THREAD);
853 JVMCIObject site = JVMCIENV->get_object_at(sites, i);
854 if (site.is_null()) {
855 JVMCI_THROW_(NullPointerException, JVMCI::ok);
856 }
857
858 jint pc_offset = jvmci_env()->get_site_Site_pcOffset(site);
859
860 if (jvmci_env()->isa_site_Call(site)) {
861 TRACE_jvmci_4("call at %i", pc_offset);
862 site_Call(buffer, pc_offset, site, JVMCI_CHECK_OK);
863 } else if (jvmci_env()->isa_site_Infopoint(site)) {
864 // three reasons for infopoints denote actual safepoints
865 JVMCIObject reason = jvmci_env()->get_site_Infopoint_reason(site);
866 if (JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_SAFEPOINT()) ||
867 JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_CALL()) ||
868 JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_IMPLICIT_EXCEPTION())) {
869 TRACE_jvmci_4("safepoint at %i", pc_offset);
870 site_Safepoint(buffer, pc_offset, site, JVMCI_CHECK_OK);
871 if (_orig_pc_offset < 0) {
872 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
873 }
874 if (JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_IMPLICIT_EXCEPTION())) {
875 TRACE_jvmci_4("implicit exception at %i", pc_offset);
876 _implicit_exception_table.add_deoptimize(pc_offset);
877 }
878 } else {
879 TRACE_jvmci_4("infopoint at %i", pc_offset);
880 site_Infopoint(buffer, pc_offset, site, JVMCI_CHECK_OK);
881 }
882 } else if (jvmci_env()->isa_site_DataPatch(site)) {
883 TRACE_jvmci_4("datapatch at %i", pc_offset);
884 site_DataPatch(buffer, pc_offset, site, JVMCI_CHECK_OK);
885 } else if (jvmci_env()->isa_site_Mark(site)) {
886 TRACE_jvmci_4("mark at %i", pc_offset);
887 site_Mark(buffer, pc_offset, site, JVMCI_CHECK_OK);
888 } else if (jvmci_env()->isa_site_ExceptionHandler(site)) {
889 TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
890 site_ExceptionHandler(pc_offset, site);
891 } else {
892 JVMCI_ERROR_OK("unexpected site subclass: %s", jvmci_env()->klass_name(site));
893 }
894 last_pc_offset = pc_offset;
895
896 JavaThread* thread = JavaThread::current();
897 if (SafepointMechanism::should_block(thread)) {
898 // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
899 ThreadToNativeFromVM ttnfv(thread);
900 }
901 }
902
903 #ifndef PRODUCT
904 if (comments().is_non_null()) {
905 for (int i = 0; i < JVMCIENV->get_length(comments()); i++) {
906 JVMCIObject comment = JVMCIENV->get_object_at(comments(), i);
907 assert(jvmci_env()->isa_HotSpotCompiledCode_Comment(comment), "cce");
908 jint offset = jvmci_env()->get_HotSpotCompiledCode_Comment_pcOffset(comment);
909 const char* text = jvmci_env()->as_utf8_string(jvmci_env()->get_HotSpotCompiledCode_Comment_text(comment));
910 buffer.block_comment(offset, text);
911 }
912 }
913 #endif
914 return JVMCI::ok;
915 }
916
917 void CodeInstaller::assumption_NoFinalizableSubclass(JVMCIObject assumption) {
918 JVMCIObject receiverType_handle = jvmci_env()->get_Assumptions_NoFinalizableSubclass_receiverType(assumption);
919 Klass* receiverType = jvmci_env()->asKlass(receiverType_handle);
920 _dependencies->assert_has_no_finalizable_subclasses(receiverType);
921 }
922
923 void CodeInstaller::assumption_ConcreteSubtype(JVMCIObject assumption) {
924 JVMCIObject context_handle = jvmci_env()->get_Assumptions_ConcreteSubtype_context(assumption);
925 JVMCIObject subtype_handle = jvmci_env()->get_Assumptions_ConcreteSubtype_subtype(assumption);
926 Klass* context = jvmci_env()->asKlass(context_handle);
927 Klass* subtype = jvmci_env()->asKlass(subtype_handle);
928
929 assert(context->is_abstract(), "");
930 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
931 }
932
933 void CodeInstaller::assumption_LeafType(JVMCIObject assumption) {
934 JVMCIObject context_handle = jvmci_env()->get_Assumptions_LeafType_context(assumption);
935 Klass* context = jvmci_env()->asKlass(context_handle);
936
937 _dependencies->assert_leaf_type(context);
938 }
939
940 void CodeInstaller::assumption_ConcreteMethod(JVMCIObject assumption) {
941 JVMCIObject impl_handle = jvmci_env()->get_Assumptions_ConcreteMethod_impl(assumption);
942 JVMCIObject context_handle = jvmci_env()->get_Assumptions_ConcreteMethod_context(assumption);
943
944 methodHandle impl = jvmci_env()->asMethod(impl_handle);
945 Klass* context = jvmci_env()->asKlass(context_handle);
946
947 _dependencies->assert_unique_concrete_method(context, impl());
948 }
949
950 void CodeInstaller::assumption_CallSiteTargetValue(JVMCIObject assumption, JVMCI_TRAPS) {
951 JVMCIObject callSiteConstant = jvmci_env()->get_Assumptions_CallSiteTargetValue_callSite(assumption);
952 Handle callSite = jvmci_env()->asConstant(callSiteConstant, JVMCI_CHECK);
953 JVMCIObject methodConstant = jvmci_env()->get_Assumptions_CallSiteTargetValue_methodHandle(assumption);
954 Handle methodHandle = jvmci_env()->asConstant(methodConstant, JVMCI_CHECK);
955 _dependencies->assert_call_site_target_value(callSite(), methodHandle());
956 }
957
958 void CodeInstaller::site_ExceptionHandler(jint pc_offset, JVMCIObject exc) {
959 jint handler_offset = jvmci_env()->get_site_ExceptionHandler_handlerPos(exc);
960
961 // Subtable header
962 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
963
964 // Subtable entry
965 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
966 }
967
968 // If deoptimization happens, the interpreter should reexecute these bytecodes.
969 // This function mainly helps the compilers to set up the reexecute bit.
970 static bool bytecode_should_reexecute(Bytecodes::Code code) {
971 switch (code) {
972 case Bytecodes::_invokedynamic:
973 case Bytecodes::_invokevirtual:
974 case Bytecodes::_invokeinterface:
975 case Bytecodes::_invokespecial:
976 case Bytecodes::_invokestatic:
977 return false;
978 default:
979 return true;
980 }
981 return true;
982 }
983
984 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(JVMCIObject debug_info, JVMCI_TRAPS) {
985 JVMCIObjectArray virtualObjects = jvmci_env()->get_DebugInfo_virtualObjectMapping(debug_info);
986 if (virtualObjects.is_null()) {
987 return NULL;
988 }
989 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(JVMCIENV->get_length(virtualObjects), JVMCIENV->get_length(virtualObjects), NULL);
990 // Create the unique ObjectValues
991 for (int i = 0; i < JVMCIENV->get_length(virtualObjects); i++) {
992 // HandleMark hm(THREAD);
993 JVMCIObject value = JVMCIENV->get_object_at(virtualObjects, i);
994 int id = jvmci_env()->get_VirtualObject_id(value);
995 JVMCIObject type = jvmci_env()->get_VirtualObject_type(value);
996 bool is_auto_box = jvmci_env()->get_VirtualObject_isAutoBox(value);
997 Klass* klass = jvmci_env()->asKlass(type);
998 oop javaMirror = klass->java_mirror();
999 ScopeValue *klass_sv = new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror));
1000 ObjectValue* sv = is_auto_box ? new AutoBoxObjectValue(id, klass_sv) : new ObjectValue(id, klass_sv);
1001 if (id < 0 || id >= objects->length()) {
1002 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
1003 }
1004 if (objects->at(id) != NULL) {
1005 JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
1006 }
1007 objects->at_put(id, sv);
1008 }
1009 // All the values which could be referenced by the VirtualObjects
1010 // exist, so now describe all the VirtualObjects themselves.
1011 for (int i = 0; i < JVMCIENV->get_length(virtualObjects); i++) {
1012 // HandleMark hm(THREAD);
1013 JVMCIObject value = JVMCIENV->get_object_at(virtualObjects, i);
1014 int id = jvmci_env()->get_VirtualObject_id(value);
1015 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, JVMCI_CHECK_NULL);
1016 }
1017 _debug_recorder->dump_object_pool(objects);
1018 return objects;
1019 }
1020
1021 void CodeInstaller::record_scope(jint pc_offset, JVMCIObject debug_info, ScopeMode scope_mode, bool return_oop, JVMCI_TRAPS) {
1022 JVMCIObject position = jvmci_env()->get_DebugInfo_bytecodePosition(debug_info);
1023 if (position.is_null()) {
1024 // Stubs do not record scope info, just oop maps
1025 return;
1026 }
1027
1028 GrowableArray<ScopeValue*>* objectMapping;
1029 if (scope_mode == CodeInstaller::FullFrame) {
1030 objectMapping = record_virtual_objects(debug_info, JVMCI_CHECK);
1031 } else {
1032 objectMapping = NULL;
1033 }
1034 record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, JVMCI_CHECK);
1035 }
1036
1037 int CodeInstaller::map_jvmci_bci(int bci) {
1038 if (bci < 0) {
1039 if (bci == jvmci_env()->get_BytecodeFrame_BEFORE_BCI()) {
1040 return BeforeBci;
1041 } else if (bci == jvmci_env()->get_BytecodeFrame_AFTER_BCI()) {
1042 return AfterBci;
1043 } else if (bci == jvmci_env()->get_BytecodeFrame_UNWIND_BCI()) {
1044 return UnwindBci;
1045 } else if (bci == jvmci_env()->get_BytecodeFrame_AFTER_EXCEPTION_BCI()) {
1046 return AfterExceptionBci;
1047 } else if (bci == jvmci_env()->get_BytecodeFrame_UNKNOWN_BCI()) {
1048 return UnknownBci;
1049 } else if (bci == jvmci_env()->get_BytecodeFrame_INVALID_FRAMESTATE_BCI()) {
1050 return InvalidFrameStateBci;
1051 }
1052 ShouldNotReachHere();
1053 }
1054 return bci;
1055 }
1056
1057 void CodeInstaller::record_scope(jint pc_offset, JVMCIObject position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, JVMCI_TRAPS) {
1058 JVMCIObject frame;
1059 if (scope_mode == CodeInstaller::FullFrame) {
1060 if (!jvmci_env()->isa_BytecodeFrame(position)) {
1061 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
1062 }
1063 frame = position;
1064 }
1065 JVMCIObject caller_frame = jvmci_env()->get_BytecodePosition_caller(position);
1066 if (caller_frame.is_non_null()) {
1067 record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, JVMCI_CHECK);
1068 }
1069
1070 JVMCIObject hotspot_method = jvmci_env()->get_BytecodePosition_method(position);
1071 Method* method = jvmci_env()->asMethod(hotspot_method);
1072 jint bci = map_jvmci_bci(jvmci_env()->get_BytecodePosition_bci(position));
1073 if (bci == jvmci_env()->get_BytecodeFrame_BEFORE_BCI()) {
1074 bci = SynchronizationEntryBCI;
1075 }
1076
1077 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
1078
1079 bool reexecute = false;
1080 if (frame.is_non_null()) {
1081 if (bci < 0){
1082 reexecute = false;
1083 } else {
1084 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
1085 reexecute = bytecode_should_reexecute(code);
1086 if (frame.is_non_null()) {
1087 reexecute = (jvmci_env()->get_BytecodeFrame_duringCall(frame) == JNI_FALSE);
1088 }
1089 }
1090 }
1091
1092 DebugToken* locals_token = NULL;
1093 DebugToken* expressions_token = NULL;
1094 DebugToken* monitors_token = NULL;
1095 bool throw_exception = false;
1096
1097 if (frame.is_non_null()) {
1098 jint local_count = jvmci_env()->get_BytecodeFrame_numLocals(frame);
1099 jint expression_count = jvmci_env()->get_BytecodeFrame_numStack(frame);
1100 jint monitor_count = jvmci_env()->get_BytecodeFrame_numLocks(frame);
1101 JVMCIObjectArray values = jvmci_env()->get_BytecodeFrame_values(frame);
1102 JVMCIObjectArray slotKinds = jvmci_env()->get_BytecodeFrame_slotKinds(frame);
1103
1104 if (values.is_null() || slotKinds.is_null()) {
1105 JVMCI_THROW(NullPointerException);
1106 }
1107 if (local_count + expression_count + monitor_count != JVMCIENV->get_length(values)) {
1108 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", JVMCIENV->get_length(values), local_count, expression_count, monitor_count);
1109 }
1110 if (local_count + expression_count != JVMCIENV->get_length(slotKinds)) {
1111 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", JVMCIENV->get_length(slotKinds), local_count, expression_count);
1112 }
1113
1114 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
1115 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
1116 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
1117
1118 TRACE_jvmci_2("Scope at bci %d with %d values", bci, JVMCIENV->get_length(values));
1119 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
1120
1121 for (jint i = 0; i < JVMCIENV->get_length(values); i++) {
1122 // HandleMark hm(THREAD);
1123 ScopeValue* second = NULL;
1124 JVMCIObject value = JVMCIENV->get_object_at(values, i);
1125 if (i < local_count) {
1126 BasicType type = jvmci_env()->kindToBasicType(JVMCIENV->get_object_at(slotKinds, i), JVMCI_CHECK);
1127 ScopeValue* first = get_scope_value(value, type, objects, second, JVMCI_CHECK);
1128 if (second != NULL) {
1129 locals->append(second);
1130 }
1131 locals->append(first);
1132 } else if (i < local_count + expression_count) {
1133 BasicType type = jvmci_env()->kindToBasicType(JVMCIENV->get_object_at(slotKinds, i), JVMCI_CHECK);
1134 ScopeValue* first = get_scope_value(value, type, objects, second, JVMCI_CHECK);
1135 if (second != NULL) {
1136 expressions->append(second);
1137 }
1138 expressions->append(first);
1139 } else {
1140 MonitorValue *monitor = get_monitor_value(value, objects, JVMCI_CHECK);
1141 monitors->append(monitor);
1142 }
1143 if (second != NULL) {
1144 i++;
1145 if (i >= JVMCIENV->get_length(values) || !JVMCIENV->equals(JVMCIENV->get_object_at(values, i), jvmci_env()->get_Value_ILLEGAL())) {
1146 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
1147 }
1148 }
1149 }
1150
1151 locals_token = _debug_recorder->create_scope_values(locals);
1152 expressions_token = _debug_recorder->create_scope_values(expressions);
1153 monitors_token = _debug_recorder->create_monitor_values(monitors);
1154
1155 throw_exception = jvmci_env()->get_BytecodeFrame_rethrowException(frame) == JNI_TRUE;
1156 }
1157
1158 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop,
1159 locals_token, expressions_token, monitors_token);
1160 }
1161
1162 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1163 JVMCIObject debug_info = jvmci_env()->get_site_Infopoint_debugInfo(site);
1164 if (debug_info.is_null()) {
1165 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1166 }
1167
1168 // address instruction = _instructions->start() + pc_offset;
1169 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1170 OopMap *map = create_oop_map(debug_info, JVMCI_CHECK);
1171 _debug_recorder->add_safepoint(pc_offset, map);
1172 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, JVMCI_CHECK);
1173 _debug_recorder->end_safepoint(pc_offset);
1174 }
1175
1176 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1177 JVMCIObject debug_info = jvmci_env()->get_site_Infopoint_debugInfo(site);
1178 if (debug_info.is_null()) {
1179 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1180 }
1181
1182 // We'd like to check that pc_offset is greater than the
1183 // last pc recorded with _debug_recorder (raising an exception if not)
1184 // but DebugInformationRecorder doesn't have sufficient public API.
1185
1186 _debug_recorder->add_non_safepoint(pc_offset);
1187 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, JVMCI_CHECK);
1188 _debug_recorder->end_non_safepoint(pc_offset);
1189 }
1190
1191 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1192 JVMCIObject target = jvmci_env()->get_site_Call_target(site);
1193 JVMCIObject hotspot_method; // JavaMethod
1194 JVMCIObject foreign_call;
1195
1196 if (jvmci_env()->isa_HotSpotForeignCallTarget(target)) {
1197 foreign_call = target;
1198 } else {
1199 hotspot_method = target;
1200 }
1201
1202 JVMCIObject debug_info = jvmci_env()->get_site_Infopoint_debugInfo(site);
1203
1204 assert(hotspot_method.is_non_null() ^ foreign_call.is_non_null(), "Call site needs exactly one type");
1205
1206 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1207 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, JVMCI_CHECK);
1208
1209 if (debug_info.is_non_null()) {
1210 OopMap *map = create_oop_map(debug_info, JVMCI_CHECK);
1211 _debug_recorder->add_safepoint(next_pc_offset, map);
1212
1213 bool return_oop = hotspot_method.is_non_null() && jvmci_env()->asMethod(hotspot_method)->is_returning_oop();
1214
1215 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, JVMCI_CHECK);
1216 }
1217
1218 if (foreign_call.is_non_null()) {
1219 jlong foreign_call_destination = jvmci_env()->get_HotSpotForeignCallTarget_address(foreign_call);
1220 if (_immutable_pic_compilation) {
1221 // Use fake short distance during PIC compilation.
1222 foreign_call_destination = (jlong)(_instructions->start() + pc_offset);
1223 }
1224 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, JVMCI_CHECK);
1225 } else { // method != NULL
1226 if (debug_info.is_null()) {
1227 JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1228 }
1229
1230 TRACE_jvmci_3("method call");
1231 CodeInstaller::pd_relocate_JavaMethod(buffer, hotspot_method, pc_offset, JVMCI_CHECK);
1232 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1233 // Need a static call stub for transitions from compiled to interpreted.
1234 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1235 }
1236 #if INCLUDE_AOT
1237 // Trampoline to far aot code.
1238 CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset);
1239 #endif
1240 }
1241
1242 _next_call_type = INVOKE_INVALID;
1243
1244 if (debug_info.is_non_null()) {
1245 _debug_recorder->end_safepoint(next_pc_offset);
1246 }
1247 }
1248
1249 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1250 JVMCIObject reference = jvmci_env()->get_site_DataPatch_reference(site);
1251 if (reference.is_null()) {
1252 JVMCI_THROW(NullPointerException);
1253 } else if (jvmci_env()->isa_site_ConstantReference(reference)) {
1254 JVMCIObject constant = jvmci_env()->get_site_ConstantReference_constant(reference);
1255 if (constant.is_null()) {
1256 JVMCI_THROW(NullPointerException);
1257 } else if (jvmci_env()->isa_DirectHotSpotObjectConstantImpl(constant)) {
1258 if (!JVMCIENV->is_hotspot()) {
1259 JVMCIObject string = JVMCIENV->call_HotSpotJVMCIRuntime_callToString(constant, JVMCI_CHECK);
1260 const char* to_string = JVMCIENV->as_utf8_string(string);
1261 JVMCI_THROW_MSG(IllegalArgumentException, err_msg("Direct object constant reached the backend: %s", to_string));
1262 }
1263 if (!_immutable_pic_compilation) {
1264 // Do not patch during PIC compilation.
1265 pd_patch_OopConstant(pc_offset, constant, JVMCI_CHECK);
1266 }
1267 } else if (jvmci_env()->isa_IndirectHotSpotObjectConstantImpl(constant)) {
1268 if (!_immutable_pic_compilation) {
1269 // Do not patch during PIC compilation.
1270 pd_patch_OopConstant(pc_offset, constant, JVMCI_CHECK);
1271 }
1272 } else if (jvmci_env()->isa_HotSpotMetaspaceConstantImpl(constant)) {
1273 if (!_immutable_pic_compilation) {
1274 pd_patch_MetaspaceConstant(pc_offset, constant, JVMCI_CHECK);
1275 }
1276 #if INCLUDE_AOT
1277 } else if (jvmci_env()->isa_HotSpotSentinelConstant(constant)) {
1278 if (!_immutable_pic_compilation) {
1279 JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", jvmci_env()->klass_name(constant));
1280 }
1281 #endif
1282 } else {
1283 JVMCI_ERROR("unknown constant type in data patch: %s", jvmci_env()->klass_name(constant));
1284 }
1285 } else if (jvmci_env()->isa_site_DataSectionReference(reference)) {
1286 int data_offset = jvmci_env()->get_site_DataSectionReference_offset(reference);
1287 if (0 <= data_offset && data_offset < _constants_size) {
1288 pd_patch_DataSectionReference(pc_offset, data_offset, JVMCI_CHECK);
1289 } else {
1290 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1291 }
1292 } else {
1293 JVMCI_ERROR("unknown data patch type: %s", jvmci_env()->klass_name(reference));
1294 }
1295 }
1296
1297 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1298 JVMCIObject id_obj = jvmci_env()->get_site_Mark_id(site);
1299
1300 if (id_obj.is_non_null()) {
1301 if (!jvmci_env()->is_boxing_object(T_INT, id_obj)) {
1302 JVMCI_ERROR("expected Integer id, got %s", jvmci_env()->klass_name(id_obj));
1303 }
1304 jint id = jvmci_env()->get_boxed_value(T_INT, id_obj).i;
1305
1306 address pc = _instructions->start() + pc_offset;
1307
1308 switch (id) {
1309 case UNVERIFIED_ENTRY:
1310 _offsets.set_value(CodeOffsets::Entry, pc_offset);
1311 break;
1312 case VERIFIED_ENTRY:
1313 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1314 break;
1315 case OSR_ENTRY:
1316 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1317 break;
1318 case EXCEPTION_HANDLER_ENTRY:
1319 _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1320 break;
1321 case DEOPT_HANDLER_ENTRY:
1322 _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1323 break;
1324 case INVOKEVIRTUAL:
1325 case INVOKEINTERFACE:
1326 case INLINE_INVOKE:
1327 case INVOKESTATIC:
1328 case INVOKESPECIAL:
1329 _next_call_type = (MarkId) id;
1330 _invoke_mark_pc = pc;
1331 break;
1332 case POLL_NEAR:
1333 case POLL_FAR:
1334 case POLL_RETURN_NEAR:
1335 case POLL_RETURN_FAR:
1336 pd_relocate_poll(pc, id, JVMCI_CHECK);
1337 break;
1338 case CARD_TABLE_SHIFT:
1339 case CARD_TABLE_ADDRESS:
1340 case HEAP_TOP_ADDRESS:
1341 case HEAP_END_ADDRESS:
1342 case NARROW_KLASS_BASE_ADDRESS:
1343 case NARROW_OOP_BASE_ADDRESS:
1344 case CRC_TABLE_ADDRESS:
1345 case LOG_OF_HEAP_REGION_GRAIN_BYTES:
1346 case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED:
1347 break;
1348 default:
1349 JVMCI_ERROR("invalid mark id: %d", id);
1350 break;
1351 }
1352 }
1353 }