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 VMReg vmReg = VMRegImpl::stack2reg(offset / 4);
95 if (!OopMapValue::legal_vm_reg_name(vmReg)) {
96 // This restriction only applies to VMRegs that are used in OopMap but
97 // since that's the only use of VMRegs it's simplest to put this test
98 // here. This test should also be equivalent legal_vm_reg_name but JVMCI
99 // clients can use max_oop_map_stack_stack_offset to detect this problem
100 // directly. The asserts just ensure that the tests are in agreement.
101 assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg");
102 JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)",
103 offset, CompilerToVM::Data::max_oop_map_stack_offset());
104 }
105 assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg");
106 return vmReg;
107 } else {
108 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
109 }
110 }
111 }
112
113 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo
114 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) {
115 Handle reference_map = DebugInfo::referenceMap(debug_info);
116 if (reference_map.is_null()) {
117 THROW_NULL(vmSymbols::java_lang_NullPointerException());
118 }
119 if (!reference_map->is_a(HotSpotReferenceMap::klass())) {
120 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name());
121 }
122 if (HotSpotReferenceMap::maxRegisterSize(reference_map) > 16) {
123 _has_wide_vector = true;
124 }
125 OopMap* map = new OopMap(_total_frame_size, _parameter_count);
126 objArrayHandle objects = HotSpotReferenceMap::objects(reference_map);
127 objArrayHandle derivedBase = HotSpotReferenceMap::derivedBase(reference_map);
128 typeArrayHandle sizeInBytes = HotSpotReferenceMap::sizeInBytes(reference_map);
129 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
130 THROW_NULL(vmSymbols::java_lang_NullPointerException());
131 }
132 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) {
133 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length());
134 }
135 for (int i = 0; i < objects->length(); i++) {
136 Handle location = objects->obj_at(i);
137 Handle baseLocation = derivedBase->obj_at(i);
138 int bytes = sizeInBytes->int_at(i);
139
140 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL);
141 if (baseLocation.not_null()) {
142 // derived oop
143 #ifdef _LP64
144 if (bytes == 8) {
145 #else
146 if (bytes == 4) {
147 #endif
148 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL);
149 map->set_derived_oop(vmReg, baseReg);
150 } else {
151 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
152 }
153 #ifdef _LP64
154 } else if (bytes == 8) {
155 // wide oop
156 map->set_oop(vmReg);
157 } else if (bytes == 4) {
158 // narrow oop
159 map->set_narrowoop(vmReg);
160 #else
161 } else if (bytes == 4) {
162 map->set_oop(vmReg);
163 #endif
164 } else {
165 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
166 }
167 }
168
169 Handle callee_save_info = (oop) DebugInfo::calleeSaveInfo(debug_info);
170 if (callee_save_info.not_null()) {
171 objArrayHandle registers = RegisterSaveLayout::registers(callee_save_info);
172 typeArrayHandle slots = RegisterSaveLayout::slots(callee_save_info);
173 for (jint i = 0; i < slots->length(); i++) {
174 Handle jvmci_reg = registers->obj_at(i);
175 jint jvmci_reg_number = code_Register::number(jvmci_reg);
176 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
177 // HotSpot stack slots are 4 bytes
178 jint jvmci_slot = slots->int_at(i);
179 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
180 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
181 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
182 #ifdef _LP64
183 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
184 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
185 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
186 #endif
187 }
188 }
189 return map;
190 }
191
192 void* CodeInstaller::record_metadata_reference(Handle constant, TRAPS) {
193 /*
194 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
195 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
196 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
197 * base class (Metadata* or MetaspaceObj*).
198 */
199 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
200 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
201 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
202 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
203 int index = _oop_recorder->find_index(klass);
204 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
205 return klass;
206 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
207 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
208 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
209 int index = _oop_recorder->find_index(method);
210 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
211 return method;
212 } else {
213 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
214 }
215 }
216
217 #ifdef _LP64
218 narrowKlass CodeInstaller::record_narrow_metadata_reference(Handle constant, TRAPS) {
219 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
220 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
221
222 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
223 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
224 }
225
226 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
227 int index = _oop_recorder->find_index(klass);
228 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
229 return Klass::encode_klass(klass);
230 }
231 #endif
232
233 Location::Type CodeInstaller::get_oop_type(Handle value) {
234 Handle valueKind = Value::valueKind(value);
235 Handle platformKind = ValueKind::platformKind(valueKind);
236
237 if (platformKind == word_kind()) {
238 return Location::oop;
239 } else {
240 return Location::narrowoop;
241 }
242 }
243
244 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
245 second = NULL;
246 if (value.is_null()) {
247 THROW_NULL(vmSymbols::java_lang_NullPointerException());
248 } else if (value == Value::ILLEGAL()) {
249 if (type != T_ILLEGAL) {
250 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
251 }
252 return _illegal_value;
253 } else if (value->is_a(RegisterValue::klass())) {
254 Handle reg = RegisterValue::reg(value);
255 jint number = code_Register::number(reg);
256 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL);
257 if (is_general_purpose_reg(hotspotRegister)) {
258 Location::Type locationType;
259 if (type == T_OBJECT) {
260 locationType = get_oop_type(value);
261 } else if (type == T_LONG) {
262 locationType = Location::lng;
263 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
264 locationType = Location::int_in_long;
265 } else {
266 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
267 }
268 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
269 if (type == T_LONG) {
270 second = value;
271 }
272 return value;
273 } else {
274 Location::Type locationType;
275 if (type == T_FLOAT) {
276 // this seems weird, but the same value is used in c1_LinearScan
277 locationType = Location::normal;
278 } else if (type == T_DOUBLE) {
279 locationType = Location::dbl;
280 } else {
281 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
282 }
283 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
284 if (type == T_DOUBLE) {
285 second = value;
286 }
287 return value;
288 }
289 } else if (value->is_a(StackSlot::klass())) {
290 jint offset = StackSlot::offset(value);
291 if (StackSlot::addFrameSize(value)) {
292 offset += _total_frame_size;
293 }
294
295 Location::Type locationType;
296 if (type == T_OBJECT) {
297 locationType = get_oop_type(value);
298 } else if (type == T_LONG) {
299 locationType = Location::lng;
300 } else if (type == T_DOUBLE) {
301 locationType = Location::dbl;
302 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
303 locationType = Location::normal;
304 } else {
305 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
306 }
307 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
308 if (type == T_DOUBLE || type == T_LONG) {
309 second = value;
310 }
311 return value;
312 } else if (value->is_a(JavaConstant::klass())) {
313 if (value->is_a(PrimitiveConstant::klass())) {
314 if (value->is_a(RawConstant::klass())) {
315 jlong prim = PrimitiveConstant::primitive(value);
316 return new ConstantLongValue(prim);
317 } else {
318 BasicType constantType = JVMCIRuntime::kindToBasicType(PrimitiveConstant::kind(value), CHECK_NULL);
319 if (type != constantType) {
320 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
321 }
322 if (type == T_INT || type == T_FLOAT) {
323 jint prim = (jint)PrimitiveConstant::primitive(value);
324 switch (prim) {
325 case -1: return _int_m1_scope_value;
326 case 0: return _int_0_scope_value;
327 case 1: return _int_1_scope_value;
328 case 2: return _int_2_scope_value;
329 default: return new ConstantIntValue(prim);
330 }
331 } else if (type == T_LONG || type == T_DOUBLE) {
332 jlong prim = PrimitiveConstant::primitive(value);
333 second = _int_1_scope_value;
334 return new ConstantLongValue(prim);
335 } else {
336 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
337 }
338 }
339 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) {
340 if (type == T_OBJECT) {
341 return _oop_null_scope_value;
342 } else {
343 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
344 }
345 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) {
346 if (type == T_OBJECT) {
347 oop obj = HotSpotObjectConstantImpl::object(value);
348 if (obj == NULL) {
349 JVMCI_ERROR_NULL("null value must be in NullConstant");
350 }
351 return new ConstantOopWriteValue(JNIHandles::make_local(obj));
352 } else {
353 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
354 }
355 }
356 } else if (value->is_a(VirtualObject::klass())) {
357 if (type == T_OBJECT) {
358 int id = VirtualObject::id(value);
359 if (0 <= id && id < objects->length()) {
360 ScopeValue* object = objects->at(id);
361 if (object != NULL) {
362 return object;
363 }
364 }
365 JVMCI_ERROR_NULL("unknown virtual object id %d", id);
366 } else {
367 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
368 }
369 }
370
371 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name())
372 }
373
374 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
375 Handle type = VirtualObject::type(value);
376 int id = VirtualObject::id(value);
377 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
378 Klass* klass = java_lang_Class::as_Klass(javaMirror);
379 bool isLongArray = klass == Universe::longArrayKlassObj();
380
381 objArrayHandle values = VirtualObject::values(value);
382 objArrayHandle slotKinds = VirtualObject::slotKinds(value);
383 for (jint i = 0; i < values->length(); i++) {
384 ScopeValue* cur_second = NULL;
385 Handle object = values->obj_at(i);
386 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
387 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK);
388
389 if (isLongArray && cur_second == NULL) {
390 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
391 // add an int 0 constant
392 cur_second = _int_0_scope_value;
393 }
394
395 if (cur_second != NULL) {
396 sv->field_values()->append(cur_second);
397 }
398 assert(value != NULL, "missing value");
399 sv->field_values()->append(value);
400 }
401 }
402
403 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
404 if (value.is_null()) {
405 THROW_NULL(vmSymbols::java_lang_NullPointerException());
406 }
407 if (!value->is_a(StackLockValue::klass())) {
408 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name());
409 }
410
411 ScopeValue* second = NULL;
412 ScopeValue* owner_value = get_scope_value(StackLockValue::owner(value), T_OBJECT, objects, second, CHECK_NULL);
413 assert(second == NULL, "monitor cannot occupy two stack slots");
414
415 ScopeValue* lock_data_value = get_scope_value(StackLockValue::slot(value), T_LONG, objects, second, CHECK_NULL);
416 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
417 assert(lock_data_value->is_location(), "invalid monitor location");
418 Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
419
420 bool eliminated = false;
421 if (StackLockValue::eliminated(value)) {
422 eliminated = true;
423 }
424
425 return new MonitorValue(owner_value, lock_data_loc, eliminated);
426 }
427
428 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) {
429 JavaThread* thread = JavaThread::current();
430 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
431 _oop_recorder = recorder;
432 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
433 objArrayHandle assumptions = HotSpotCompiledCode::assumptions(compiled_code);
434 if (!assumptions.is_null()) {
435 int length = assumptions->length();
436 for (int i = 0; i < length; ++i) {
437 Handle assumption = assumptions->obj_at(i);
438 if (!assumption.is_null()) {
439 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) {
440 assumption_NoFinalizableSubclass(assumption);
441 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) {
442 assumption_ConcreteSubtype(assumption);
443 } else if (assumption->klass() == Assumptions_LeafType::klass()) {
444 assumption_LeafType(assumption);
445 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) {
446 assumption_ConcreteMethod(assumption);
447 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) {
448 assumption_CallSiteTargetValue(assumption);
449 } else {
450 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name());
451 }
452 }
453 }
454 }
455 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
456 objArrayHandle methods = HotSpotCompiledCode::methods(compiled_code);
457 if (!methods.is_null()) {
458 int length = methods->length();
459 for (int i = 0; i < length; ++i) {
460 Handle method_handle = methods->obj_at(i);
461 methodHandle method = getMethodFromHotSpotMethod(method_handle());
462 _dependencies->assert_evol_method(method());
463 }
464 }
465 }
466 }
467
468 RelocBuffer::~RelocBuffer() {
469 if (_buffer != NULL) {
470 FREE_C_HEAP_ARRAY(char, _buffer);
471 }
472 }
473
474 address RelocBuffer::begin() const {
475 if (_buffer != NULL) {
476 return (address) _buffer;
477 }
478 return (address) _static_buffer;
479 }
480
481 void RelocBuffer::set_size(size_t bytes) {
482 assert(bytes <= _size, "can't grow in size!");
483 _size = bytes;
484 }
485
486 void RelocBuffer::ensure_size(size_t bytes) {
487 assert(_buffer == NULL, "can only be used once");
488 assert(_size == 0, "can only be used once");
489 if (bytes >= RelocBuffer::stack_size) {
490 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal);
491 }
492 _size = bytes;
493 }
494
495 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) {
496 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
497 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
498 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), NULL, CHECK_OK);
499
500 // Get instructions and constants CodeSections early because we need it.
501 _instructions = buffer.insts();
502 _constants = buffer.consts();
503
504 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
505 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK);
506 if (result != JVMCIEnv::ok) {
507 return result;
508 }
509
510 _debug_recorder->pcs_size(); // create the sentinel record
511
512 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
513
514 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
515 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
516 metadata.set_exception_table(&_exception_handler_table);
517
518 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
519
520 reloc_buffer->ensure_size(buffer.total_relocation_size());
521 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
522 reloc_buffer->set_size(size);
523 return JVMCIEnv::ok;
524 }
525
526 // constructor used to create a method
527 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) {
528 CodeBuffer buffer("JVMCI Compiler CodeBuffer");
529 jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
530 OopRecorder* recorder = new OopRecorder(&_arena, true);
531 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
532
533 // Get instructions and constants CodeSections early because we need it.
534 _instructions = buffer.insts();
535 _constants = buffer.consts();
536
537 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
538 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK);
539 if (result != JVMCIEnv::ok) {
540 return result;
541 }
542
543 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
544
545 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
546 oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
547 char* name = strdup(java_lang_String::as_utf8_string(stubName));
548 cb = RuntimeStub::new_runtime_stub(name,
549 &buffer,
550 CodeOffsets::frame_never_safe,
551 stack_slots,
552 _debug_recorder->_oopmaps,
553 false);
554 result = JVMCIEnv::ok;
555 } else {
556 nmethod* nm = NULL;
557 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code));
558 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code);
559 jint id = HotSpotCompiledNmethod::id(compiled_code);
560 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE;
561 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code);
562 if (id == -1) {
563 // Make sure a valid compile_id is associated with every compile
564 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
565 }
566 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
567 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table,
568 compiler, _debug_recorder, _dependencies, env, id,
569 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log);
570 cb = nm;
571 if (nm != NULL && env == NULL) {
572 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
573 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
574 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) {
575 nm->print_nmethod(printnmethods);
576 }
577 DirectivesStack::release(directive);
578 }
579 }
580
581 if (cb != NULL) {
582 // Make sure the pre-calculated constants section size was correct.
583 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
584 }
585 return result;
586 }
587
588 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) {
589 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
590 Handle hotspotJavaMethod = HotSpotCompiledNmethod::method(compiled_code);
591 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod());
592 _parameter_count = method->size_of_parameters();
593 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
594 } else {
595 // Must be a HotSpotCompiledRuntimeStub.
596 // Only used in OopMap constructor for non-product builds
597 _parameter_count = 0;
598 }
599 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code));
600
601 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code));
602 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code);
603 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code);
604
605 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code);
606 if (deoptRescueSlot == NULL) {
607 _orig_pc_offset = -1;
608 } else {
609 _orig_pc_offset = StackSlot::offset(deoptRescueSlot);
610 if (StackSlot::addFrameSize(deoptRescueSlot)) {
611 _orig_pc_offset += _total_frame_size;
612 }
613 if (_orig_pc_offset < 0) {
614 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
615 }
616 }
617
618 // Pre-calculate the constants section size. This is required for PC-relative addressing.
619 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code));
620 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) {
621 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code));
622 }
623 _constants_size = data_section()->length();
624
625 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code));
626
627 #ifndef PRODUCT
628 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code));
629 #endif
630
631 _next_call_type = INVOKE_INVALID;
632
633 _has_wide_vector = false;
634
635 oop arch = TargetDescription::arch(target);
636 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch));
637 }
638
639 int CodeInstaller::estimate_stubs_size(TRAPS) {
640 // Estimate the number of static call stubs that might be emitted.
641 int static_call_stubs = 0;
642 objArrayOop sites = this->sites();
643 for (int i = 0; i < sites->length(); i++) {
644 oop site = sites->obj_at(i);
645 if (site != NULL && site->is_a(site_Mark::klass())) {
646 oop id_obj = site_Mark::id(site);
647 if (id_obj != NULL) {
648 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) {
649 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name());
650 }
651 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
652 if (id == INVOKESTATIC || id == INVOKESPECIAL) {
653 static_call_stubs++;
654 }
655 }
656 }
657 }
658 return static_call_stubs * CompiledStaticCall::to_interp_stub_size();
659 }
660
661 // perform data and call relocation on the CodeBuffer
662 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, TRAPS) {
663 HandleMark hm;
664 objArrayHandle sites = this->sites();
665 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo));
666
667 // Allocate enough space in the stub section for the static call
668 // stubs. Stubs have extra relocs but they are managed by the stub
669 // section itself so they don't need to be accounted for in the
670 // locs_buffer above.
671 int stubs_size = estimate_stubs_size(CHECK_OK);
672 int total_size = round_to(_code_size, buffer.insts()->alignment()) + round_to(_constants_size, buffer.consts()->alignment()) + round_to(stubs_size, buffer.stubs()->alignment());
673
674 if (total_size > JVMCINMethodSizeLimit) {
675 return JVMCIEnv::code_too_large;
676 }
677
678 buffer.initialize(total_size, locs_buffer_size);
679 if (buffer.blob() == NULL) {
680 return JVMCIEnv::cache_full;
681 }
682 buffer.initialize_stubs_size(stubs_size);
683 buffer.initialize_consts_size(_constants_size);
684
685 _debug_recorder = new DebugInformationRecorder(_oop_recorder);
686 _debug_recorder->set_oopmaps(new OopMapSet());
687
688 buffer.initialize_oop_recorder(_oop_recorder);
689
690 // copy the constant data into the newly created CodeBuffer
691 address end_data = _constants->start() + _constants_size;
692 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size);
693 _constants->set_end(end_data);
694
695 // copy the code into the newly created CodeBuffer
696 address end_pc = _instructions->start() + _code_size;
697 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
698 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size);
699 _instructions->set_end(end_pc);
700
701 for (int i = 0; i < data_section_patches()->length(); i++) {
702 Handle patch = data_section_patches()->obj_at(i);
703 if (patch.is_null()) {
704 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
705 }
706 Handle reference = site_DataPatch::reference(patch);
707 if (reference.is_null()) {
708 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
709 }
710 if (!reference->is_a(site_ConstantReference::klass())) {
711 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
712 }
713 Handle constant = site_ConstantReference::constant(reference);
714 if (constant.is_null()) {
715 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
716 }
717 address dest = _constants->start() + site_Site::pcOffset(patch);
718 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
719 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
720 #ifdef _LP64
721 *((narrowKlass*) dest) = record_narrow_metadata_reference(constant, CHECK_OK);
722 #else
723 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
724 #endif
725 } else {
726 *((void**) dest) = record_metadata_reference(constant, CHECK_OK);
727 }
728 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
729 Handle obj = HotSpotObjectConstantImpl::object(constant);
730 jobject value = JNIHandles::make_local(obj());
731 int oop_index = _oop_recorder->find_index(value);
732
733 if (HotSpotObjectConstantImpl::compressed(constant)) {
734 #ifdef _LP64
735 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
736 #else
737 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
738 #endif
739 } else {
740 _constants->relocate(dest, oop_Relocation::spec(oop_index));
741 }
742 } else {
743 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
744 }
745 }
746 jint last_pc_offset = -1;
747 for (int i = 0; i < sites->length(); i++) {
748 Handle site = sites->obj_at(i);
749 if (site.is_null()) {
750 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
751 }
752
753 jint pc_offset = site_Site::pcOffset(site);
754
755 if (site->is_a(site_Call::klass())) {
756 TRACE_jvmci_4("call at %i", pc_offset);
757 site_Call(buffer, pc_offset, site, CHECK_OK);
758 } else if (site->is_a(site_Infopoint::klass())) {
759 // three reasons for infopoints denote actual safepoints
760 oop reason = site_Infopoint::reason(site);
761 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) {
762 TRACE_jvmci_4("safepoint at %i", pc_offset);
763 site_Safepoint(buffer, pc_offset, site, CHECK_OK);
764 if (_orig_pc_offset < 0) {
765 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
766 }
767 } else {
768 TRACE_jvmci_4("infopoint at %i", pc_offset);
769 site_Infopoint(buffer, pc_offset, site, CHECK_OK);
770 }
771 } else if (site->is_a(site_DataPatch::klass())) {
772 TRACE_jvmci_4("datapatch at %i", pc_offset);
773 site_DataPatch(buffer, pc_offset, site, CHECK_OK);
774 } else if (site->is_a(site_Mark::klass())) {
775 TRACE_jvmci_4("mark at %i", pc_offset);
776 site_Mark(buffer, pc_offset, site, CHECK_OK);
777 } else if (site->is_a(site_ExceptionHandler::klass())) {
778 TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
779 site_ExceptionHandler(pc_offset, site);
780 } else {
781 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name());
782 }
783 last_pc_offset = pc_offset;
784
785 if (CodeInstallSafepointChecks && SafepointSynchronize::do_call_back()) {
786 // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
787 ThreadToNativeFromVM ttnfv(JavaThread::current());
788 }
789 }
790
791 #ifndef PRODUCT
792 if (comments() != NULL) {
793 for (int i = 0; i < comments()->length(); i++) {
794 oop comment = comments()->obj_at(i);
795 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce");
796 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment);
797 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment));
798 buffer.block_comment(offset, text);
799 }
800 }
801 #endif
802 return JVMCIEnv::ok;
803 }
804
805 void CodeInstaller::assumption_NoFinalizableSubclass(Handle assumption) {
806 Handle receiverType_handle = Assumptions_NoFinalizableSubclass::receiverType(assumption());
807 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle));
808 _dependencies->assert_has_no_finalizable_subclasses(receiverType);
809 }
810
811 void CodeInstaller::assumption_ConcreteSubtype(Handle assumption) {
812 Handle context_handle = Assumptions_ConcreteSubtype::context(assumption());
813 Handle subtype_handle = Assumptions_ConcreteSubtype::subtype(assumption());
814 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
815 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle));
816
817 assert(context->is_abstract(), "");
818 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
819 }
820
821 void CodeInstaller::assumption_LeafType(Handle assumption) {
822 Handle context_handle = Assumptions_LeafType::context(assumption());
823 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
824
825 _dependencies->assert_leaf_type(context);
826 }
827
828 void CodeInstaller::assumption_ConcreteMethod(Handle assumption) {
829 Handle impl_handle = Assumptions_ConcreteMethod::impl(assumption());
830 Handle context_handle = Assumptions_ConcreteMethod::context(assumption());
831
832 methodHandle impl = getMethodFromHotSpotMethod(impl_handle());
833 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
834
835 _dependencies->assert_unique_concrete_method(context, impl());
836 }
837
838 void CodeInstaller::assumption_CallSiteTargetValue(Handle assumption) {
839 Handle callSite = Assumptions_CallSiteTargetValue::callSite(assumption());
840 Handle methodHandle = Assumptions_CallSiteTargetValue::methodHandle(assumption());
841
842 _dependencies->assert_call_site_target_value(callSite(), methodHandle());
843 }
844
845 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) {
846 jint handler_offset = site_ExceptionHandler::handlerPos(exc);
847
848 // Subtable header
849 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
850
851 // Subtable entry
852 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
853 }
854
855 // If deoptimization happens, the interpreter should reexecute these bytecodes.
856 // This function mainly helps the compilers to set up the reexecute bit.
857 static bool bytecode_should_reexecute(Bytecodes::Code code) {
858 switch (code) {
859 case Bytecodes::_invokedynamic:
860 case Bytecodes::_invokevirtual:
861 case Bytecodes::_invokeinterface:
862 case Bytecodes::_invokespecial:
863 case Bytecodes::_invokestatic:
864 return false;
865 default:
866 return true;
867 }
868 return true;
869 }
870
871 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) {
872 objArrayHandle virtualObjects = DebugInfo::virtualObjectMapping(debug_info);
873 if (virtualObjects.is_null()) {
874 return NULL;
875 }
876 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL);
877 // Create the unique ObjectValues
878 for (int i = 0; i < virtualObjects->length(); i++) {
879 Handle value = virtualObjects->obj_at(i);
880 int id = VirtualObject::id(value);
881 Handle type = VirtualObject::type(value);
882 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
883 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror)));
884 if (id < 0 || id >= objects->length()) {
885 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
886 }
887 if (objects->at(id) != NULL) {
888 JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
889 }
890 objects->at_put(id, sv);
891 }
892 // All the values which could be referenced by the VirtualObjects
893 // exist, so now describe all the VirtualObjects themselves.
894 for (int i = 0; i < virtualObjects->length(); i++) {
895 Handle value = virtualObjects->obj_at(i);
896 int id = VirtualObject::id(value);
897 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL);
898 }
899 _debug_recorder->dump_object_pool(objects);
900 return objects;
901 }
902
903 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, TRAPS) {
904 Handle position = DebugInfo::bytecodePosition(debug_info);
905 if (position.is_null()) {
906 // Stubs do not record scope info, just oop maps
907 return;
908 }
909
910 GrowableArray<ScopeValue*>* objectMapping;
911 if (scope_mode == CodeInstaller::FullFrame) {
912 objectMapping = record_virtual_objects(debug_info, CHECK);
913 } else {
914 objectMapping = NULL;
915 }
916 record_scope(pc_offset, position, scope_mode, objectMapping, CHECK);
917 }
918
919 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, TRAPS) {
920 Handle frame;
921 if (scope_mode == CodeInstaller::FullFrame) {
922 if (!position->is_a(BytecodeFrame::klass())) {
923 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
924 }
925 frame = position;
926 }
927 Handle caller_frame = BytecodePosition::caller(position);
928 if (caller_frame.not_null()) {
929 record_scope(pc_offset, caller_frame, scope_mode, objects, CHECK);
930 }
931
932 Handle hotspot_method = BytecodePosition::method(position);
933 Method* method = getMethodFromHotSpotMethod(hotspot_method());
934 jint bci = BytecodePosition::bci(position);
935 if (bci == BytecodeFrame::BEFORE_BCI()) {
936 bci = SynchronizationEntryBCI;
937 }
938
939 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
940
941 bool reexecute = false;
942 if (frame.not_null()) {
943 if (bci == SynchronizationEntryBCI){
944 reexecute = false;
945 } else {
946 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
947 reexecute = bytecode_should_reexecute(code);
948 if (frame.not_null()) {
949 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE);
950 }
951 }
952 }
953
954 DebugToken* locals_token = NULL;
955 DebugToken* expressions_token = NULL;
956 DebugToken* monitors_token = NULL;
957 bool throw_exception = false;
958
959 if (frame.not_null()) {
960 jint local_count = BytecodeFrame::numLocals(frame);
961 jint expression_count = BytecodeFrame::numStack(frame);
962 jint monitor_count = BytecodeFrame::numLocks(frame);
963 objArrayHandle values = BytecodeFrame::values(frame);
964 objArrayHandle slotKinds = BytecodeFrame::slotKinds(frame);
965
966 if (values.is_null() || slotKinds.is_null()) {
967 THROW(vmSymbols::java_lang_NullPointerException());
968 }
969 if (local_count + expression_count + monitor_count != values->length()) {
970 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count);
971 }
972 if (local_count + expression_count != slotKinds->length()) {
973 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count);
974 }
975
976 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
977 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
978 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
979
980 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length());
981 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
982
983 for (jint i = 0; i < values->length(); i++) {
984 ScopeValue* second = NULL;
985 Handle value = values->obj_at(i);
986 if (i < local_count) {
987 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
988 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
989 if (second != NULL) {
990 locals->append(second);
991 }
992 locals->append(first);
993 } else if (i < local_count + expression_count) {
994 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
995 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
996 if (second != NULL) {
997 expressions->append(second);
998 }
999 expressions->append(first);
1000 } else {
1001 MonitorValue *monitor = get_monitor_value(value, objects, CHECK);
1002 monitors->append(monitor);
1003 }
1004 if (second != NULL) {
1005 i++;
1006 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) {
1007 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
1008 }
1009 }
1010 }
1011
1012 locals_token = _debug_recorder->create_scope_values(locals);
1013 expressions_token = _debug_recorder->create_scope_values(expressions);
1014 monitors_token = _debug_recorder->create_monitor_values(monitors);
1015
1016 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE;
1017 }
1018
1019 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, false,
1020 locals_token, expressions_token, monitors_token);
1021 }
1022
1023 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1024 Handle debug_info = site_Infopoint::debugInfo(site);
1025 if (debug_info.is_null()) {
1026 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1027 }
1028
1029 // address instruction = _instructions->start() + pc_offset;
1030 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1031 OopMap *map = create_oop_map(debug_info, CHECK);
1032 _debug_recorder->add_safepoint(pc_offset, map);
1033 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1034 _debug_recorder->end_safepoint(pc_offset);
1035 }
1036
1037 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1038 Handle debug_info = site_Infopoint::debugInfo(site);
1039 if (debug_info.is_null()) {
1040 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1041 }
1042
1043 // We'd like to check that pc_offset is greater than the
1044 // last pc recorded with _debug_recorder (raising an exception if not)
1045 // but DebugInformationRecorder doesn't have sufficient public API.
1046
1047 _debug_recorder->add_non_safepoint(pc_offset);
1048 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK);
1049 _debug_recorder->end_non_safepoint(pc_offset);
1050 }
1051
1052 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1053 Handle target = site_Call::target(site);
1054 InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
1055
1056 Handle hotspot_method; // JavaMethod
1057 Handle foreign_call;
1058
1059 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
1060 foreign_call = target;
1061 } else {
1062 hotspot_method = target;
1063 }
1064
1065 Handle debug_info = site_Call::debugInfo(site);
1066
1067 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type");
1068
1069 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1070 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK);
1071
1072 if (debug_info.not_null()) {
1073 OopMap *map = create_oop_map(debug_info, CHECK);
1074 _debug_recorder->add_safepoint(next_pc_offset, map);
1075 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1076 }
1077
1078 if (foreign_call.not_null()) {
1079 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call);
1080 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK);
1081 } else { // method != NULL
1082 if (debug_info.is_null()) {
1083 JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1084 }
1085
1086 TRACE_jvmci_3("method call");
1087 CodeInstaller::pd_relocate_JavaMethod(hotspot_method, pc_offset, CHECK);
1088 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1089 // Need a static call stub for transitions from compiled to interpreted.
1090 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1091 }
1092 }
1093
1094 _next_call_type = INVOKE_INVALID;
1095
1096 if (debug_info.not_null()) {
1097 _debug_recorder->end_safepoint(next_pc_offset);
1098 }
1099 }
1100
1101 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1102 Handle reference = site_DataPatch::reference(site);
1103 if (reference.is_null()) {
1104 THROW(vmSymbols::java_lang_NullPointerException());
1105 } else if (reference->is_a(site_ConstantReference::klass())) {
1106 Handle constant = site_ConstantReference::constant(reference);
1107 if (constant.is_null()) {
1108 THROW(vmSymbols::java_lang_NullPointerException());
1109 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
1110 pd_patch_OopConstant(pc_offset, constant, CHECK);
1111 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
1112 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK);
1113 } else {
1114 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name());
1115 }
1116 } else if (reference->is_a(site_DataSectionReference::klass())) {
1117 int data_offset = site_DataSectionReference::offset(reference);
1118 if (0 <= data_offset && data_offset < _constants_size) {
1119 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK);
1120 } else {
1121 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1122 }
1123 } else {
1124 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name());
1125 }
1126 }
1127
1128 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1129 Handle id_obj = site_Mark::id(site);
1130
1131 if (id_obj.not_null()) {
1132 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) {
1133 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name());
1134 }
1135 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
1136
1137 address pc = _instructions->start() + pc_offset;
1138
1139 switch (id) {
1140 case UNVERIFIED_ENTRY:
1141 _offsets.set_value(CodeOffsets::Entry, pc_offset);
1142 break;
1143 case VERIFIED_ENTRY:
1144 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1145 break;
1146 case OSR_ENTRY:
1147 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1148 break;
1149 case EXCEPTION_HANDLER_ENTRY:
1150 _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1151 break;
1152 case DEOPT_HANDLER_ENTRY:
1153 _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1154 break;
1155 case INVOKEVIRTUAL:
1156 case INVOKEINTERFACE:
1157 case INLINE_INVOKE:
1158 case INVOKESTATIC:
1159 case INVOKESPECIAL:
1160 _next_call_type = (MarkId) id;
1161 _invoke_mark_pc = pc;
1162 break;
1163 case POLL_NEAR:
1164 case POLL_FAR:
1165 case POLL_RETURN_NEAR:
1166 case POLL_RETURN_FAR:
1167 pd_relocate_poll(pc, id, CHECK);
1168 break;
1169 case CARD_TABLE_SHIFT:
1170 case CARD_TABLE_ADDRESS:
1171 case HEAP_TOP_ADDRESS:
1172 case HEAP_END_ADDRESS:
1173 case NARROW_KLASS_BASE_ADDRESS:
1174 case CRC_TABLE_ADDRESS:
1175 break;
1176 default:
1177 JVMCI_ERROR("invalid mark id: %d", id);
1178 break;
1179 }
1180 }
1181 }
1182