jvmciCodeInstaller.cpp revision 11328:7b91a1088135 
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).
62ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL);
63ConstantIntValue*      CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1);
64ConstantIntValue*      CodeInstaller::_int_0_scope_value =  new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(0);
65ConstantIntValue*      CodeInstaller::_int_1_scope_value =  new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1);
66ConstantIntValue*      CodeInstaller::_int_2_scope_value =  new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2);
67LocationValue*         CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location());
68
69Method* getMethodFromHotSpotMethod(oop hotspot_method) {
70  assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity");
71  return CompilerToVM::asMethod(hotspot_method);
72}
73
74VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) {
75  if (location.is_null()) {
76    THROW_NULL(vmSymbols::java_lang_NullPointerException());
77  }
78
79  Handle reg = code_Location::reg(location);
80  jint offset = code_Location::offset(location);
81
82  if (reg.not_null()) {
83    // register
84    jint number = code_Register::number(reg);
85    VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL);
86    if (offset % 4 == 0) {
87      return vmReg->next(offset / 4);
88    } else {
89      JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset);
90    }
91  } else {
92    // stack slot
93    if (offset % 4 == 0) {
94      return VMRegImpl::stack2reg(offset / 4);
95    } else {
96      JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
97    }
98  }
99}
100
101// creates a HotSpot oop map out of the byte arrays provided by DebugInfo
102OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) {
103  Handle reference_map = DebugInfo::referenceMap(debug_info);
104  if (reference_map.is_null()) {
105    THROW_NULL(vmSymbols::java_lang_NullPointerException());
106  }
107  if (!reference_map->is_a(HotSpotReferenceMap::klass())) {
108    JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name());
109  }
110  if (HotSpotReferenceMap::maxRegisterSize(reference_map) > 16) {
111    _has_wide_vector = true;
112  }
113  OopMap* map = new OopMap(_total_frame_size, _parameter_count);
114  objArrayHandle objects = HotSpotReferenceMap::objects(reference_map);
115  objArrayHandle derivedBase = HotSpotReferenceMap::derivedBase(reference_map);
116  typeArrayHandle sizeInBytes = HotSpotReferenceMap::sizeInBytes(reference_map);
117  if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
118    THROW_NULL(vmSymbols::java_lang_NullPointerException());
119  }
120  if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) {
121    JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length());
122  }
123  for (int i = 0; i < objects->length(); i++) {
124    Handle location = objects->obj_at(i);
125    Handle baseLocation = derivedBase->obj_at(i);
126    int bytes = sizeInBytes->int_at(i);
127
128    VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL);
129    if (baseLocation.not_null()) {
130      // derived oop
131#ifdef _LP64
132      if (bytes == 8) {
133#else
134      if (bytes == 4) {
135#endif
136        VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL);
137        map->set_derived_oop(vmReg, baseReg);
138      } else {
139        JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
140      }
141#ifdef _LP64
142    } else if (bytes == 8) {
143      // wide oop
144      map->set_oop(vmReg);
145    } else if (bytes == 4) {
146      // narrow oop
147      map->set_narrowoop(vmReg);
148#else
149    } else if (bytes == 4) {
150      map->set_oop(vmReg);
151#endif
152    } else {
153      JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
154    }
155  }
156
157  Handle callee_save_info = (oop) DebugInfo::calleeSaveInfo(debug_info);
158  if (callee_save_info.not_null()) {
159    objArrayHandle registers = RegisterSaveLayout::registers(callee_save_info);
160    typeArrayHandle slots = RegisterSaveLayout::slots(callee_save_info);
161    for (jint i = 0; i < slots->length(); i++) {
162      Handle jvmci_reg = registers->obj_at(i);
163      jint jvmci_reg_number = code_Register::number(jvmci_reg);
164      VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
165      // HotSpot stack slots are 4 bytes
166      jint jvmci_slot = slots->int_at(i);
167      jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
168      VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
169      map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
170#ifdef _LP64
171      // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
172      VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
173      map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
174#endif
175    }
176  }
177  return map;
178}
179
180void* CodeInstaller::record_metadata_reference(Handle constant, TRAPS) {
181  /*
182   * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
183   * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
184   * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
185   * base class (Metadata* or MetaspaceObj*).
186   */
187  oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
188  if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
189    Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
190    assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
191    int index = _oop_recorder->find_index(klass);
192    TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
193    return klass;
194  } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
195    Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
196    assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
197    int index = _oop_recorder->find_index(method);
198    TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
199    return method;
200  } else {
201    JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
202  }
203}
204
205#ifdef _LP64
206narrowKlass CodeInstaller::record_narrow_metadata_reference(Handle constant, TRAPS) {
207  oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
208  assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
209
210  if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
211    JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
212  }
213
214  Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
215  int index = _oop_recorder->find_index(klass);
216  TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
217  return Klass::encode_klass(klass);
218}
219#endif
220
221Location::Type CodeInstaller::get_oop_type(Handle value) {
222  Handle valueKind = Value::valueKind(value);
223  Handle platformKind = ValueKind::platformKind(valueKind);
224
225  if (platformKind == word_kind()) {
226    return Location::oop;
227  } else {
228    return Location::narrowoop;
229  }
230}
231
232ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
233  second = NULL;
234  if (value.is_null()) {
235    THROW_NULL(vmSymbols::java_lang_NullPointerException());
236  } else if (value == Value::ILLEGAL()) {
237    if (type != T_ILLEGAL) {
238      JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
239    }
240    return _illegal_value;
241  } else if (value->is_a(RegisterValue::klass())) {
242    Handle reg = RegisterValue::reg(value);
243    jint number = code_Register::number(reg);
244    VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL);
245    if (is_general_purpose_reg(hotspotRegister)) {
246      Location::Type locationType;
247      if (type == T_OBJECT) {
248        locationType = get_oop_type(value);
249      } else if (type == T_LONG) {
250        locationType = Location::lng;
251      } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
252        locationType = Location::int_in_long;
253      } else {
254        JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
255      }
256      ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
257      if (type == T_LONG) {
258        second = value;
259      }
260      return value;
261    } else {
262      Location::Type locationType;
263      if (type == T_FLOAT) {
264        // this seems weird, but the same value is used in c1_LinearScan
265        locationType = Location::normal;
266      } else if (type == T_DOUBLE) {
267        locationType = Location::dbl;
268      } else {
269        JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
270      }
271      ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
272      if (type == T_DOUBLE) {
273        second = value;
274      }
275      return value;
276    }
277  } else if (value->is_a(StackSlot::klass())) {
278    jint offset = StackSlot::offset(value);
279    if (StackSlot::addFrameSize(value)) {
280      offset += _total_frame_size;
281    }
282
283    Location::Type locationType;
284    if (type == T_OBJECT) {
285      locationType = get_oop_type(value);
286    } else if (type == T_LONG) {
287      locationType = Location::lng;
288    } else if (type == T_DOUBLE) {
289      locationType = Location::dbl;
290    } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
291      locationType = Location::normal;
292    } else {
293      JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
294    }
295    ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
296    if (type == T_DOUBLE || type == T_LONG) {
297      second = value;
298    }
299    return value;
300  } else if (value->is_a(JavaConstant::klass())) {
301    if (value->is_a(PrimitiveConstant::klass())) {
302      if (value->is_a(RawConstant::klass())) {
303        jlong prim = PrimitiveConstant::primitive(value);
304        return new ConstantLongValue(prim);
305      } else {
306        BasicType constantType = JVMCIRuntime::kindToBasicType(PrimitiveConstant::kind(value), CHECK_NULL);
307        if (type != constantType) {
308          JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
309        }
310        if (type == T_INT || type == T_FLOAT) {
311          jint prim = (jint)PrimitiveConstant::primitive(value);
312          switch (prim) {
313            case -1: return _int_m1_scope_value;
314            case  0: return _int_0_scope_value;
315            case  1: return _int_1_scope_value;
316            case  2: return _int_2_scope_value;
317            default: return new ConstantIntValue(prim);
318          }
319        } else if (type == T_LONG || type == T_DOUBLE) {
320          jlong prim = PrimitiveConstant::primitive(value);
321          second = _int_1_scope_value;
322          return new ConstantLongValue(prim);
323        } else {
324          JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
325        }
326      }
327    } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) {
328      if (type == T_OBJECT) {
329        return _oop_null_scope_value;
330      } else {
331        JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
332      }
333    } else if (value->is_a(HotSpotObjectConstantImpl::klass())) {
334      if (type == T_OBJECT) {
335        oop obj = HotSpotObjectConstantImpl::object(value);
336        if (obj == NULL) {
337          JVMCI_ERROR_NULL("null value must be in NullConstant");
338        }
339        return new ConstantOopWriteValue(JNIHandles::make_local(obj));
340      } else {
341        JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
342      }
343    }
344  } else if (value->is_a(VirtualObject::klass())) {
345    if (type == T_OBJECT) {
346      int id = VirtualObject::id(value);
347      if (0 <= id && id < objects->length()) {
348        ScopeValue* object = objects->at(id);
349        if (object != NULL) {
350          return object;
351        }
352      }
353      JVMCI_ERROR_NULL("unknown virtual object id %d", id);
354    } else {
355      JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
356    }
357  }
358
359  JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name())
360}
361
362void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
363  Handle type = VirtualObject::type(value);
364  int id = VirtualObject::id(value);
365  oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
366  Klass* klass = java_lang_Class::as_Klass(javaMirror);
367  bool isLongArray = klass == Universe::longArrayKlassObj();
368
369  objArrayHandle values = VirtualObject::values(value);
370  objArrayHandle slotKinds = VirtualObject::slotKinds(value);
371  for (jint i = 0; i < values->length(); i++) {
372    ScopeValue* cur_second = NULL;
373    Handle object = values->obj_at(i);
374    BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
375    ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK);
376
377    if (isLongArray && cur_second == NULL) {
378      // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
379      // add an int 0 constant
380      cur_second = _int_0_scope_value;
381    }
382
383    if (cur_second != NULL) {
384      sv->field_values()->append(cur_second);
385    }
386    assert(value != NULL, "missing value");
387    sv->field_values()->append(value);
388  }
389}
390
391MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) {
392  if (value.is_null()) {
393    THROW_NULL(vmSymbols::java_lang_NullPointerException());
394  }
395  if (!value->is_a(StackLockValue::klass())) {
396    JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name());
397  }
398
399  ScopeValue* second = NULL;
400  ScopeValue* owner_value = get_scope_value(StackLockValue::owner(value), T_OBJECT, objects, second, CHECK_NULL);
401  assert(second == NULL, "monitor cannot occupy two stack slots");
402
403  ScopeValue* lock_data_value = get_scope_value(StackLockValue::slot(value), T_LONG, objects, second, CHECK_NULL);
404  assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
405  assert(lock_data_value->is_location(), "invalid monitor location");
406  Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
407
408  bool eliminated = false;
409  if (StackLockValue::eliminated(value)) {
410    eliminated = true;
411  }
412
413  return new MonitorValue(owner_value, lock_data_loc, eliminated);
414}
415
416void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) {
417  JavaThread* thread = JavaThread::current();
418  CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
419  _oop_recorder = recorder;
420  _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
421  objArrayHandle assumptions = HotSpotCompiledCode::assumptions(compiled_code);
422  if (!assumptions.is_null()) {
423    int length = assumptions->length();
424    for (int i = 0; i < length; ++i) {
425      Handle assumption = assumptions->obj_at(i);
426      if (!assumption.is_null()) {
427        if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) {
428          assumption_NoFinalizableSubclass(assumption);
429        } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) {
430          assumption_ConcreteSubtype(assumption);
431        } else if (assumption->klass() == Assumptions_LeafType::klass()) {
432          assumption_LeafType(assumption);
433        } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) {
434          assumption_ConcreteMethod(assumption);
435        } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) {
436          assumption_CallSiteTargetValue(assumption);
437        } else {
438          JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name());
439        }
440      }
441    }
442  }
443  if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
444    objArrayHandle methods = HotSpotCompiledCode::methods(compiled_code);
445    if (!methods.is_null()) {
446      int length = methods->length();
447      for (int i = 0; i < length; ++i) {
448        Handle method_handle = methods->obj_at(i);
449        methodHandle method = getMethodFromHotSpotMethod(method_handle());
450        _dependencies->assert_evol_method(method());
451      }
452    }
453  }
454}
455
456RelocBuffer::~RelocBuffer() {
457  if (_buffer != NULL) {
458    FREE_C_HEAP_ARRAY(char, _buffer);
459  }
460}
461
462address RelocBuffer::begin() const {
463  if (_buffer != NULL) {
464    return (address) _buffer;
465  }
466  return (address) _static_buffer;
467}
468
469void RelocBuffer::set_size(size_t bytes) {
470  assert(bytes <= _size, "can't grow in size!");
471  _size = bytes;
472}
473
474void RelocBuffer::ensure_size(size_t bytes) {
475  assert(_buffer == NULL, "can only be used once");
476  assert(_size == 0, "can only be used once");
477  if (bytes >= RelocBuffer::stack_size) {
478    _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal);
479  }
480  _size = bytes;
481}
482
483JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) {
484  CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
485  jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
486  initialize_dependencies(JNIHandles::resolve(compiled_code_obj), NULL, CHECK_OK);
487
488  // Get instructions and constants CodeSections early because we need it.
489  _instructions = buffer.insts();
490  _constants = buffer.consts();
491
492  initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
493  JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK);
494  if (result != JVMCIEnv::ok) {
495    return result;
496  }
497
498  _debug_recorder->pcs_size(); // create the sentinel record
499
500  assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
501
502  metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
503  metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
504  metadata.set_exception_table(&_exception_handler_table);
505
506  RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
507
508  reloc_buffer->ensure_size(buffer.total_relocation_size());
509  size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
510  reloc_buffer->set_size(size);
511  return JVMCIEnv::ok;
512}
513
514// constructor used to create a method
515JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) {
516  CodeBuffer buffer("JVMCI Compiler CodeBuffer");
517  jobject compiled_code_obj = JNIHandles::make_local(compiled_code());
518  OopRecorder* recorder = new OopRecorder(&_arena, true);
519  initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK);
520
521  // Get instructions and constants CodeSections early because we need it.
522  _instructions = buffer.insts();
523  _constants = buffer.consts();
524
525  initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK);
526  JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK);
527  if (result != JVMCIEnv::ok) {
528    return result;
529  }
530
531  int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
532
533  if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
534    oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
535    char* name = strdup(java_lang_String::as_utf8_string(stubName));
536    cb = RuntimeStub::new_runtime_stub(name,
537                                       &buffer,
538                                       CodeOffsets::frame_never_safe,
539                                       stack_slots,
540                                       _debug_recorder->_oopmaps,
541                                       false);
542    result = JVMCIEnv::ok;
543  } else {
544    nmethod* nm = NULL;
545    methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code));
546    jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code);
547    jint id = HotSpotCompiledNmethod::id(compiled_code);
548    bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE;
549    JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code);
550    if (id == -1) {
551      // Make sure a valid compile_id is associated with every compile
552      id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
553    }
554    result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
555                                       stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table,
556                                       compiler, _debug_recorder, _dependencies, env, id,
557                                       has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log);
558    cb = nm;
559    if (nm != NULL && env == NULL) {
560      DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
561      bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
562      if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) {
563        nm->print_nmethod(printnmethods);
564      }
565      DirectivesStack::release(directive);
566    }
567  }
568
569  if (cb != NULL) {
570    // Make sure the pre-calculated constants section size was correct.
571    guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
572  }
573  return result;
574}
575
576void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) {
577  if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
578    Handle hotspotJavaMethod = HotSpotCompiledNmethod::method(compiled_code);
579    methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod());
580    _parameter_count = method->size_of_parameters();
581    TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
582  } else {
583    // Must be a HotSpotCompiledRuntimeStub.
584    // Only used in OopMap constructor for non-product builds
585    _parameter_count = 0;
586  }
587  _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code));
588
589  _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code));
590  _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code);
591  _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code);
592
593  oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code);
594  if (deoptRescueSlot == NULL) {
595    _orig_pc_offset = -1;
596  } else {
597    _orig_pc_offset = StackSlot::offset(deoptRescueSlot);
598    if (StackSlot::addFrameSize(deoptRescueSlot)) {
599      _orig_pc_offset += _total_frame_size;
600    }
601    if (_orig_pc_offset < 0) {
602      JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
603    }
604  }
605
606  // Pre-calculate the constants section size.  This is required for PC-relative addressing.
607  _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code));
608  if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) {
609    JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code));
610  }
611  _constants_size = data_section()->length();
612
613  _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code));
614
615#ifndef PRODUCT
616  _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code));
617#endif
618
619  _next_call_type = INVOKE_INVALID;
620
621  _has_wide_vector = false;
622
623  oop arch = TargetDescription::arch(target);
624  _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch));
625}
626
627int CodeInstaller::estimate_stubs_size(TRAPS) {
628  // Estimate the number of static call stubs that might be emitted.
629  int static_call_stubs = 0;
630  objArrayOop sites = this->sites();
631  for (int i = 0; i < sites->length(); i++) {
632    oop site = sites->obj_at(i);
633    if (site != NULL && site->is_a(site_Mark::klass())) {
634      oop id_obj = site_Mark::id(site);
635      if (id_obj != NULL) {
636        if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) {
637          JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name());
638        }
639        jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
640        if (id == INVOKESTATIC || id == INVOKESPECIAL) {
641          static_call_stubs++;
642        }
643      }
644    }
645  }
646  return static_call_stubs * CompiledStaticCall::to_interp_stub_size();
647}
648
649// perform data and call relocation on the CodeBuffer
650JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, TRAPS) {
651  HandleMark hm;
652  objArrayHandle sites = this->sites();
653  int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo));
654
655  // Allocate enough space in the stub section for the static call
656  // stubs.  Stubs have extra relocs but they are managed by the stub
657  // section itself so they don't need to be accounted for in the
658  // locs_buffer above.
659  int stubs_size = estimate_stubs_size(CHECK_OK);
660  int total_size = round_to(_code_size, buffer.insts()->alignment()) + round_to(_constants_size, buffer.consts()->alignment()) + round_to(stubs_size, buffer.stubs()->alignment());
661
662  if (total_size > JVMCINMethodSizeLimit) {
663    return JVMCIEnv::code_too_large;
664  }
665
666  buffer.initialize(total_size, locs_buffer_size);
667  if (buffer.blob() == NULL) {
668    return JVMCIEnv::cache_full;
669  }
670  buffer.initialize_stubs_size(stubs_size);
671  buffer.initialize_consts_size(_constants_size);
672
673  _debug_recorder = new DebugInformationRecorder(_oop_recorder);
674  _debug_recorder->set_oopmaps(new OopMapSet());
675
676  buffer.initialize_oop_recorder(_oop_recorder);
677
678  // copy the constant data into the newly created CodeBuffer
679  address end_data = _constants->start() + _constants_size;
680  memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size);
681  _constants->set_end(end_data);
682
683  // copy the code into the newly created CodeBuffer
684  address end_pc = _instructions->start() + _code_size;
685  guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
686  memcpy(_instructions->start(), code()->base(T_BYTE), _code_size);
687  _instructions->set_end(end_pc);
688
689  for (int i = 0; i < data_section_patches()->length(); i++) {
690    Handle patch = data_section_patches()->obj_at(i);
691    if (patch.is_null()) {
692      THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
693    }
694    Handle reference = site_DataPatch::reference(patch);
695    if (reference.is_null()) {
696      THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
697    }
698    if (!reference->is_a(site_ConstantReference::klass())) {
699      JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
700    }
701    Handle constant = site_ConstantReference::constant(reference);
702    if (constant.is_null()) {
703      THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
704    }
705    address dest = _constants->start() + site_Site::pcOffset(patch);
706    if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
707      if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
708#ifdef _LP64
709        *((narrowKlass*) dest) = record_narrow_metadata_reference(constant, CHECK_OK);
710#else
711        JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
712#endif
713      } else {
714        *((void**) dest) = record_metadata_reference(constant, CHECK_OK);
715      }
716    } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
717      Handle obj = HotSpotObjectConstantImpl::object(constant);
718      jobject value = JNIHandles::make_local(obj());
719      int oop_index = _oop_recorder->find_index(value);
720
721      if (HotSpotObjectConstantImpl::compressed(constant)) {
722#ifdef _LP64
723        _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
724#else
725        JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
726#endif
727      } else {
728        _constants->relocate(dest, oop_Relocation::spec(oop_index));
729      }
730    } else {
731      JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
732    }
733  }
734  jint last_pc_offset = -1;
735  for (int i = 0; i < sites->length(); i++) {
736    Handle site = sites->obj_at(i);
737    if (site.is_null()) {
738      THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
739    }
740
741    jint pc_offset = site_Site::pcOffset(site);
742
743    if (site->is_a(site_Call::klass())) {
744      TRACE_jvmci_4("call at %i", pc_offset);
745      site_Call(buffer, pc_offset, site, CHECK_OK);
746    } else if (site->is_a(site_Infopoint::klass())) {
747      // three reasons for infopoints denote actual safepoints
748      oop reason = site_Infopoint::reason(site);
749      if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) {
750        TRACE_jvmci_4("safepoint at %i", pc_offset);
751        site_Safepoint(buffer, pc_offset, site, CHECK_OK);
752        if (_orig_pc_offset < 0) {
753          JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
754        }
755      } else {
756        TRACE_jvmci_4("infopoint at %i", pc_offset);
757        site_Infopoint(buffer, pc_offset, site, CHECK_OK);
758      }
759    } else if (site->is_a(site_DataPatch::klass())) {
760      TRACE_jvmci_4("datapatch at %i", pc_offset);
761      site_DataPatch(buffer, pc_offset, site, CHECK_OK);
762    } else if (site->is_a(site_Mark::klass())) {
763      TRACE_jvmci_4("mark at %i", pc_offset);
764      site_Mark(buffer, pc_offset, site, CHECK_OK);
765    } else if (site->is_a(site_ExceptionHandler::klass())) {
766      TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
767      site_ExceptionHandler(pc_offset, site);
768    } else {
769      JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name());
770    }
771    last_pc_offset = pc_offset;
772
773    if (CodeInstallSafepointChecks && SafepointSynchronize::do_call_back()) {
774      // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
775      ThreadToNativeFromVM ttnfv(JavaThread::current());
776    }
777  }
778
779#ifndef PRODUCT
780  if (comments() != NULL) {
781    for (int i = 0; i < comments()->length(); i++) {
782      oop comment = comments()->obj_at(i);
783      assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce");
784      jint offset = HotSpotCompiledCode_Comment::pcOffset(comment);
785      char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment));
786      buffer.block_comment(offset, text);
787    }
788  }
789#endif
790  return JVMCIEnv::ok;
791}
792
793void CodeInstaller::assumption_NoFinalizableSubclass(Handle assumption) {
794  Handle receiverType_handle = Assumptions_NoFinalizableSubclass::receiverType(assumption());
795  Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle));
796  _dependencies->assert_has_no_finalizable_subclasses(receiverType);
797}
798
799void CodeInstaller::assumption_ConcreteSubtype(Handle assumption) {
800  Handle context_handle = Assumptions_ConcreteSubtype::context(assumption());
801  Handle subtype_handle = Assumptions_ConcreteSubtype::subtype(assumption());
802  Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
803  Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle));
804
805  assert(context->is_abstract(), "");
806  _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
807}
808
809void CodeInstaller::assumption_LeafType(Handle assumption) {
810  Handle context_handle = Assumptions_LeafType::context(assumption());
811  Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
812
813  _dependencies->assert_leaf_type(context);
814}
815
816void CodeInstaller::assumption_ConcreteMethod(Handle assumption) {
817  Handle impl_handle = Assumptions_ConcreteMethod::impl(assumption());
818  Handle context_handle = Assumptions_ConcreteMethod::context(assumption());
819
820  methodHandle impl = getMethodFromHotSpotMethod(impl_handle());
821  Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle));
822
823  _dependencies->assert_unique_concrete_method(context, impl());
824}
825
826void CodeInstaller::assumption_CallSiteTargetValue(Handle assumption) {
827  Handle callSite = Assumptions_CallSiteTargetValue::callSite(assumption());
828  Handle methodHandle = Assumptions_CallSiteTargetValue::methodHandle(assumption());
829
830  _dependencies->assert_call_site_target_value(callSite(), methodHandle());
831}
832
833void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) {
834  jint handler_offset = site_ExceptionHandler::handlerPos(exc);
835
836  // Subtable header
837  _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
838
839  // Subtable entry
840  _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
841}
842
843// If deoptimization happens, the interpreter should reexecute these bytecodes.
844// This function mainly helps the compilers to set up the reexecute bit.
845static bool bytecode_should_reexecute(Bytecodes::Code code) {
846  switch (code) {
847    case Bytecodes::_invokedynamic:
848    case Bytecodes::_invokevirtual:
849    case Bytecodes::_invokeinterface:
850    case Bytecodes::_invokespecial:
851    case Bytecodes::_invokestatic:
852      return false;
853    default:
854      return true;
855    }
856  return true;
857}
858
859GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) {
860  objArrayHandle virtualObjects = DebugInfo::virtualObjectMapping(debug_info);
861  if (virtualObjects.is_null()) {
862    return NULL;
863  }
864  GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL);
865  // Create the unique ObjectValues
866  for (int i = 0; i < virtualObjects->length(); i++) {
867    Handle value = virtualObjects->obj_at(i);
868    int id = VirtualObject::id(value);
869    Handle type = VirtualObject::type(value);
870    oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type);
871    ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror)));
872    if (id < 0 || id >= objects->length()) {
873      JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
874    }
875    if (objects->at(id) != NULL) {
876      JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
877    }
878    objects->at_put(id, sv);
879  }
880  // All the values which could be referenced by the VirtualObjects
881  // exist, so now describe all the VirtualObjects themselves.
882  for (int i = 0; i < virtualObjects->length(); i++) {
883    Handle value = virtualObjects->obj_at(i);
884    int id = VirtualObject::id(value);
885    record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL);
886  }
887  _debug_recorder->dump_object_pool(objects);
888  return objects;
889}
890
891void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, TRAPS) {
892  Handle position = DebugInfo::bytecodePosition(debug_info);
893  if (position.is_null()) {
894    // Stubs do not record scope info, just oop maps
895    return;
896  }
897
898  GrowableArray<ScopeValue*>* objectMapping;
899  if (scope_mode == CodeInstaller::FullFrame) {
900    objectMapping = record_virtual_objects(debug_info, CHECK);
901  } else {
902    objectMapping = NULL;
903  }
904  record_scope(pc_offset, position, scope_mode, objectMapping, CHECK);
905}
906
907void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, TRAPS) {
908  Handle frame;
909  if (scope_mode == CodeInstaller::FullFrame) {
910    if (!position->is_a(BytecodeFrame::klass())) {
911      JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
912    }
913    frame = position;
914  }
915  Handle caller_frame = BytecodePosition::caller(position);
916  if (caller_frame.not_null()) {
917    record_scope(pc_offset, caller_frame, scope_mode, objects, CHECK);
918  }
919
920  Handle hotspot_method = BytecodePosition::method(position);
921  Method* method = getMethodFromHotSpotMethod(hotspot_method());
922  jint bci = BytecodePosition::bci(position);
923  if (bci == BytecodeFrame::BEFORE_BCI()) {
924    bci = SynchronizationEntryBCI;
925  }
926
927  TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
928
929  bool reexecute = false;
930  if (frame.not_null()) {
931    if (bci == SynchronizationEntryBCI){
932       reexecute = false;
933    } else {
934      Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
935      reexecute = bytecode_should_reexecute(code);
936      if (frame.not_null()) {
937        reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE);
938      }
939    }
940  }
941
942  DebugToken* locals_token = NULL;
943  DebugToken* expressions_token = NULL;
944  DebugToken* monitors_token = NULL;
945  bool throw_exception = false;
946
947  if (frame.not_null()) {
948    jint local_count = BytecodeFrame::numLocals(frame);
949    jint expression_count = BytecodeFrame::numStack(frame);
950    jint monitor_count = BytecodeFrame::numLocks(frame);
951    objArrayHandle values = BytecodeFrame::values(frame);
952    objArrayHandle slotKinds = BytecodeFrame::slotKinds(frame);
953
954    if (values.is_null() || slotKinds.is_null()) {
955      THROW(vmSymbols::java_lang_NullPointerException());
956    }
957    if (local_count + expression_count + monitor_count != values->length()) {
958      JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count);
959    }
960    if (local_count + expression_count != slotKinds->length()) {
961      JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count);
962    }
963
964    GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
965    GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
966    GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
967
968    TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length());
969    TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
970
971    for (jint i = 0; i < values->length(); i++) {
972      ScopeValue* second = NULL;
973      Handle value = values->obj_at(i);
974      if (i < local_count) {
975        BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
976        ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
977        if (second != NULL) {
978          locals->append(second);
979        }
980        locals->append(first);
981      } else if (i < local_count + expression_count) {
982        BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK);
983        ScopeValue* first = get_scope_value(value, type, objects, second, CHECK);
984        if (second != NULL) {
985          expressions->append(second);
986        }
987        expressions->append(first);
988      } else {
989        MonitorValue *monitor = get_monitor_value(value, objects, CHECK);
990        monitors->append(monitor);
991      }
992      if (second != NULL) {
993        i++;
994        if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) {
995          JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
996        }
997      }
998    }
999
1000    locals_token = _debug_recorder->create_scope_values(locals);
1001    expressions_token = _debug_recorder->create_scope_values(expressions);
1002    monitors_token = _debug_recorder->create_monitor_values(monitors);
1003
1004    throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE;
1005  }
1006
1007  _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, false,
1008                                  locals_token, expressions_token, monitors_token);
1009}
1010
1011void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1012  Handle debug_info = site_Infopoint::debugInfo(site);
1013  if (debug_info.is_null()) {
1014    JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1015  }
1016
1017  // address instruction = _instructions->start() + pc_offset;
1018  // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1019  OopMap *map = create_oop_map(debug_info, CHECK);
1020  _debug_recorder->add_safepoint(pc_offset, map);
1021  record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1022  _debug_recorder->end_safepoint(pc_offset);
1023}
1024
1025void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1026  Handle debug_info = site_Infopoint::debugInfo(site);
1027  if (debug_info.is_null()) {
1028    JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1029  }
1030
1031  // We'd like to check that pc_offset is greater than the
1032  // last pc recorded with _debug_recorder (raising an exception if not)
1033  // but DebugInformationRecorder doesn't have sufficient public API.
1034
1035  _debug_recorder->add_non_safepoint(pc_offset);
1036  record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK);
1037  _debug_recorder->end_non_safepoint(pc_offset);
1038}
1039
1040void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1041  Handle target = site_Call::target(site);
1042  InstanceKlass* target_klass = InstanceKlass::cast(target->klass());
1043
1044  Handle hotspot_method; // JavaMethod
1045  Handle foreign_call;
1046
1047  if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) {
1048    foreign_call = target;
1049  } else {
1050    hotspot_method = target;
1051  }
1052
1053  Handle debug_info = site_Call::debugInfo(site);
1054
1055  assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type");
1056
1057  NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1058  jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK);
1059
1060  if (debug_info.not_null()) {
1061    OopMap *map = create_oop_map(debug_info, CHECK);
1062    _debug_recorder->add_safepoint(next_pc_offset, map);
1063    record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, CHECK);
1064  }
1065
1066  if (foreign_call.not_null()) {
1067    jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call);
1068    CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK);
1069  } else { // method != NULL
1070    if (debug_info.is_null()) {
1071      JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1072    }
1073
1074    TRACE_jvmci_3("method call");
1075    CodeInstaller::pd_relocate_JavaMethod(hotspot_method, pc_offset, CHECK);
1076    if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1077      // Need a static call stub for transitions from compiled to interpreted.
1078      CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1079    }
1080  }
1081
1082  _next_call_type = INVOKE_INVALID;
1083
1084  if (debug_info.not_null()) {
1085    _debug_recorder->end_safepoint(next_pc_offset);
1086  }
1087}
1088
1089void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1090  Handle reference = site_DataPatch::reference(site);
1091  if (reference.is_null()) {
1092    THROW(vmSymbols::java_lang_NullPointerException());
1093  } else if (reference->is_a(site_ConstantReference::klass())) {
1094    Handle constant = site_ConstantReference::constant(reference);
1095    if (constant.is_null()) {
1096      THROW(vmSymbols::java_lang_NullPointerException());
1097    } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
1098      pd_patch_OopConstant(pc_offset, constant, CHECK);
1099    } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
1100      pd_patch_MetaspaceConstant(pc_offset, constant, CHECK);
1101    } else {
1102      JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name());
1103    }
1104  } else if (reference->is_a(site_DataSectionReference::klass())) {
1105    int data_offset = site_DataSectionReference::offset(reference);
1106    if (0 <= data_offset && data_offset < _constants_size) {
1107      pd_patch_DataSectionReference(pc_offset, data_offset, CHECK);
1108    } else {
1109      JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1110    }
1111  } else {
1112    JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name());
1113  }
1114}
1115
1116void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) {
1117  Handle id_obj = site_Mark::id(site);
1118
1119  if (id_obj.not_null()) {
1120    if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) {
1121      JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name());
1122    }
1123    jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT));
1124
1125    address pc = _instructions->start() + pc_offset;
1126
1127    switch (id) {
1128      case UNVERIFIED_ENTRY:
1129        _offsets.set_value(CodeOffsets::Entry, pc_offset);
1130        break;
1131      case VERIFIED_ENTRY:
1132        _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1133        break;
1134      case OSR_ENTRY:
1135        _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1136        break;
1137      case EXCEPTION_HANDLER_ENTRY:
1138        _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1139        break;
1140      case DEOPT_HANDLER_ENTRY:
1141        _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1142        break;
1143      case INVOKEVIRTUAL:
1144      case INVOKEINTERFACE:
1145      case INLINE_INVOKE:
1146      case INVOKESTATIC:
1147      case INVOKESPECIAL:
1148        _next_call_type = (MarkId) id;
1149        _invoke_mark_pc = pc;
1150        break;
1151      case POLL_NEAR:
1152      case POLL_FAR:
1153      case POLL_RETURN_NEAR:
1154      case POLL_RETURN_FAR:
1155        pd_relocate_poll(pc, id, CHECK);
1156        break;
1157      case CARD_TABLE_SHIFT:
1158      case CARD_TABLE_ADDRESS:
1159      case HEAP_TOP_ADDRESS:
1160      case HEAP_END_ADDRESS:
1161      case NARROW_KLASS_BASE_ADDRESS:
1162      case CRC_TABLE_ADDRESS:
1163        break;
1164      default:
1165        JVMCI_ERROR("invalid mark id: %d", id);
1166        break;
1167    }
1168  }
1169}
1170
1171