/*

 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

// no precompiled headers

#include "ci/ciUtilities.hpp"

#include "gc/shared/barrierSet.hpp"

#include "memory/oopFactory.hpp"

#include "oops/objArrayOop.inline.hpp"

#include "jvmci/jvmciRuntime.hpp"

#include "jvmci/jvmciCompilerToVM.hpp"

#include "jvmci/vmStructs_jvmci.hpp"

#include "runtime/flags/jvmFlag.hpp"

#include "runtime/handles.inline.hpp"

#include "runtime/sharedRuntime.hpp"

#include "utilities/resourceHash.hpp"

int CompilerToVM::Data::Klass_vtable_start_offset;

int CompilerToVM::Data::Klass_vtable_length_offset;

int CompilerToVM::Data::Method_extra_stack_entries;

address CompilerToVM::Data::SharedRuntime_ic_miss_stub;

address CompilerToVM::Data::SharedRuntime_handle_wrong_method_stub;

address CompilerToVM::Data::SharedRuntime_deopt_blob_unpack;

address CompilerToVM::Data::SharedRuntime_deopt_blob_uncommon_trap;

size_t CompilerToVM::Data::ThreadLocalAllocBuffer_alignment_reserve;

CollectedHeap* CompilerToVM::Data::Universe_collectedHeap;

int CompilerToVM::Data::Universe_base_vtable_size;

address CompilerToVM::Data::Universe_narrow_oop_base;

int CompilerToVM::Data::Universe_narrow_oop_shift;

address CompilerToVM::Data::Universe_narrow_klass_base;

int CompilerToVM::Data::Universe_narrow_klass_shift;

void* CompilerToVM::Data::Universe_non_oop_bits;

uintptr_t CompilerToVM::Data::Universe_verify_oop_mask;

uintptr_t CompilerToVM::Data::Universe_verify_oop_bits;

bool       CompilerToVM::Data::_supports_inline_contig_alloc;

HeapWord** CompilerToVM::Data::_heap_end_addr;

HeapWord* volatile* CompilerToVM::Data::_heap_top_addr;

int CompilerToVM::Data::_max_oop_map_stack_offset;

jbyte* CompilerToVM::Data::cardtable_start_address;

int CompilerToVM::Data::cardtable_shift;

int CompilerToVM::Data::vm_page_size;

int CompilerToVM::Data::sizeof_vtableEntry = sizeof(vtableEntry);

int CompilerToVM::Data::sizeof_ExceptionTableElement = sizeof(ExceptionTableElement);

int CompilerToVM::Data::sizeof_LocalVariableTableElement = sizeof(LocalVariableTableElement);

int CompilerToVM::Data::sizeof_ConstantPool = sizeof(ConstantPool);

int CompilerToVM::Data::sizeof_narrowKlass = sizeof(narrowKlass);

int CompilerToVM::Data::sizeof_arrayOopDesc = sizeof(arrayOopDesc);

int CompilerToVM::Data::sizeof_BasicLock = sizeof(BasicLock);

address CompilerToVM::Data::dsin;

address CompilerToVM::Data::dcos;

address CompilerToVM::Data::dtan;

address CompilerToVM::Data::dexp;

address CompilerToVM::Data::dlog;

address CompilerToVM::Data::dlog10;

address CompilerToVM::Data::dpow;

address CompilerToVM::Data::symbol_init;

address CompilerToVM::Data::symbol_clinit;

void CompilerToVM::Data::initialize(TRAPS) {

  Klass_vtable_start_offset = in_bytes(Klass::vtable_start_offset());

  Klass_vtable_length_offset = in_bytes(Klass::vtable_length_offset());

  Method_extra_stack_entries = Method::extra_stack_entries();

  SharedRuntime_ic_miss_stub = SharedRuntime::get_ic_miss_stub();

  SharedRuntime_handle_wrong_method_stub = SharedRuntime::get_handle_wrong_method_stub();

  SharedRuntime_deopt_blob_unpack = SharedRuntime::deopt_blob()->unpack();

  SharedRuntime_deopt_blob_uncommon_trap = SharedRuntime::deopt_blob()->uncommon_trap();

  ThreadLocalAllocBuffer_alignment_reserve = ThreadLocalAllocBuffer::alignment_reserve();

  Universe_collectedHeap = Universe::heap();

  Universe_base_vtable_size = Universe::base_vtable_size();

  Universe_narrow_oop_base = Universe::narrow_oop_base();

  Universe_narrow_oop_shift = Universe::narrow_oop_shift();

  Universe_narrow_klass_base = Universe::narrow_klass_base();

  Universe_narrow_klass_shift = Universe::narrow_klass_shift();

  Universe_non_oop_bits = Universe::non_oop_word();

  Universe_verify_oop_mask = Universe::verify_oop_mask();

  Universe_verify_oop_bits = Universe::verify_oop_bits();

  _supports_inline_contig_alloc = Universe::heap()->supports_inline_contig_alloc();

  _heap_end_addr = _supports_inline_contig_alloc ? Universe::heap()->end_addr() : (HeapWord**) -1;

  _heap_top_addr = _supports_inline_contig_alloc ? Universe::heap()->top_addr() : (HeapWord* volatile*) -1;

  _max_oop_map_stack_offset = (OopMapValue::register_mask - VMRegImpl::stack2reg(0)->value()) * VMRegImpl::stack_slot_size;

  int max_oop_map_stack_index = _max_oop_map_stack_offset / VMRegImpl::stack_slot_size;

  assert(OopMapValue::legal_vm_reg_name(VMRegImpl::stack2reg(max_oop_map_stack_index)), "should be valid");

  assert(!OopMapValue::legal_vm_reg_name(VMRegImpl::stack2reg(max_oop_map_stack_index + 1)), "should be invalid");

  symbol_init = (address) vmSymbols::object_initializer_name();

  symbol_clinit = (address) vmSymbols::class_initializer_name();

  BarrierSet* bs = BarrierSet::barrier_set();

  if (bs->is_a(BarrierSet::CardTableBarrierSet)) {

    jbyte* base = ci_card_table_address();

    assert(base != NULL, "unexpected byte_map_base");

    cardtable_start_address = base;

    cardtable_shift = CardTable::card_shift;

  } else {

    // No card mark barriers

    cardtable_start_address = 0;

    cardtable_shift = 0;

  }

  vm_page_size = os::vm_page_size();

#define SET_TRIGFUNC(name)                                      \

  if (StubRoutines::name() != NULL) {                           \

    name = StubRoutines::name();                                \

  } else {                                                      \

    name = CAST_FROM_FN_PTR(address, SharedRuntime::name);      \

  }

  SET_TRIGFUNC(dsin);

  SET_TRIGFUNC(dcos);

  SET_TRIGFUNC(dtan);

  SET_TRIGFUNC(dexp);

  SET_TRIGFUNC(dlog10);

  SET_TRIGFUNC(dlog);

  SET_TRIGFUNC(dpow);

#undef SET_TRIGFUNC

}

objArrayHandle CompilerToVM::initialize_intrinsics(TRAPS) {

  objArrayHandle vmIntrinsics = oopFactory::new_objArray_handle(VMIntrinsicMethod::klass(), (vmIntrinsics::ID_LIMIT - 1), CHECK_(objArrayHandle()));

  int index = 0;

  // The intrinsics for a class are usually adjacent to each other.

  // When they are, the string for the class name can be reused.

  vmSymbols::SID kls_sid = vmSymbols::NO_SID;

  Handle kls_str;

#define VM_SYMBOL_TO_STRING(s) \

  java_lang_String::create_from_symbol(vmSymbols::symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(s)), CHECK_(objArrayHandle()))

#define VM_INTRINSIC_INFO(id, kls, name, sig, ignore_fcode) {             \

    instanceHandle vmIntrinsicMethod = InstanceKlass::cast(VMIntrinsicMethod::klass())->allocate_instance_handle(CHECK_(objArrayHandle())); \

    vmSymbols::SID sid = vmSymbols::VM_SYMBOL_ENUM_NAME(kls);             \

    if (kls_sid != sid) {                                                 \

      kls_str = VM_SYMBOL_TO_STRING(kls);                                 \

      kls_sid = sid;                                                      \

    }                                                                     \

    Handle name_str = VM_SYMBOL_TO_STRING(name);                          \

    Handle sig_str = VM_SYMBOL_TO_STRING(sig);                            \

    VMIntrinsicMethod::set_declaringClass(vmIntrinsicMethod, kls_str());  \

    VMIntrinsicMethod::set_name(vmIntrinsicMethod, name_str());           \

    VMIntrinsicMethod::set_descriptor(vmIntrinsicMethod, sig_str());      \

    VMIntrinsicMethod::set_id(vmIntrinsicMethod, vmIntrinsics::id);       \

      vmIntrinsics->obj_at_put(index++, vmIntrinsicMethod());             \

  }

  VM_INTRINSICS_DO(VM_INTRINSIC_INFO, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE)

#undef VM_SYMBOL_TO_STRING

#undef VM_INTRINSIC_INFO

  assert(index == vmIntrinsics::ID_LIMIT - 1, "must be");

  return vmIntrinsics;

}

/**

 * The set of VM flags known to be used.

 */

#define PREDEFINED_CONFIG_FLAGS(do_bool_flag, do_intx_flag, do_uintx_flag) \

  do_intx_flag(AllocateInstancePrefetchLines)                              \

  do_intx_flag(AllocatePrefetchDistance)                                   \

  do_intx_flag(AllocatePrefetchInstr)                                      \

  do_intx_flag(AllocatePrefetchLines)                                      \

  do_intx_flag(AllocatePrefetchStepSize)                                   \

  do_intx_flag(AllocatePrefetchStyle)                                      \

  do_intx_flag(BciProfileWidth)                                            \

  do_bool_flag(BootstrapJVMCI)                                             \

  do_bool_flag(CITime)                                                     \

  do_bool_flag(CITimeEach)                                                 \

  do_uintx_flag(CodeCacheSegmentSize)                                      \

  do_intx_flag(CodeEntryAlignment)                                         \

  do_bool_flag(CompactFields)                                              \

  NOT_PRODUCT(do_intx_flag(CompileTheWorldStartAt))                        \

  NOT_PRODUCT(do_intx_flag(CompileTheWorldStopAt))                         \

  do_intx_flag(ContendedPaddingWidth)                                      \

  do_bool_flag(DontCompileHugeMethods)                                     \

  do_bool_flag(EagerJVMCI)                                                 \

  do_bool_flag(EnableContended)                                            \

  do_intx_flag(FieldsAllocationStyle)                                      \

  do_bool_flag(FoldStableValues)                                           \

  do_bool_flag(ForceUnreachable)                                           \

  do_intx_flag(HugeMethodLimit)                                            \

  do_bool_flag(Inline)                                                     \

  do_intx_flag(JVMCICounterSize)                                           \

  do_bool_flag(JVMCIPrintProperties)                                       \

  do_bool_flag(JVMCIUseFastLocking)                                        \

  do_intx_flag(MethodProfileWidth)                                         \

  do_intx_flag(ObjectAlignmentInBytes)                                     \

  do_bool_flag(PrintInlining)                                              \

  do_bool_flag(ReduceInitialCardMarks)                                     \

  do_bool_flag(RestrictContended)                                          \

  do_intx_flag(StackReservedPages)                                         \

  do_intx_flag(StackShadowPages)                                           \

  do_bool_flag(TLABStats)                                                  \

  do_uintx_flag(TLABWasteIncrement)                                        \

  do_intx_flag(TypeProfileWidth)                                           \

  do_bool_flag(UseAESIntrinsics)                                           \

  X86_ONLY(do_intx_flag(UseAVX))                                           \

  do_bool_flag(UseBiasedLocking)                                           \

  do_bool_flag(UseCRC32Intrinsics)                                         \

  do_bool_flag(UseCompressedClassPointers)                                 \

  do_bool_flag(UseCompressedOops)                                          \

  X86_ONLY(do_bool_flag(UseCountLeadingZerosInstruction))                  \

  X86_ONLY(do_bool_flag(UseCountTrailingZerosInstruction))                 \

  do_bool_flag(UseConcMarkSweepGC)                                         \

  do_bool_flag(UseG1GC)                                                    \

  do_bool_flag(UseParallelGC)                                              \

  do_bool_flag(UseParallelOldGC)                                           \

  do_bool_flag(UseSerialGC)                                                \

  do_bool_flag(UseZGC)                                                     \

  do_bool_flag(UseEpsilonGC)                                               \

  COMPILER2_PRESENT(do_bool_flag(UseMontgomeryMultiplyIntrinsic))          \

  COMPILER2_PRESENT(do_bool_flag(UseMontgomerySquareIntrinsic))            \

  COMPILER2_PRESENT(do_bool_flag(UseMulAddIntrinsic))                      \

  COMPILER2_PRESENT(do_bool_flag(UseMultiplyToLenIntrinsic))               \

  do_bool_flag(UsePopCountInstruction)                                     \

  do_bool_flag(UseSHA1Intrinsics)                                          \

  do_bool_flag(UseSHA256Intrinsics)                                        \

  do_bool_flag(UseSHA512Intrinsics)                                        \

  do_intx_flag(UseSSE)                                                     \

  COMPILER2_PRESENT(do_bool_flag(UseSquareToLenIntrinsic))                 \

  do_bool_flag(UseStackBanging)                                            \

  do_bool_flag(UseTLAB)                                                    \

  do_bool_flag(VerifyOops)                                                 \

#define BOXED_BOOLEAN(name, value) oop name = ((jboolean)(value) ? boxedTrue() : boxedFalse())

#define BOXED_DOUBLE(name, value) oop name; do { jvalue p; p.d = (jdouble) (value); name = java_lang_boxing_object::create(T_DOUBLE, &p, CHECK_NULL);} while(0)

#define BOXED_LONG(name, value) \

  oop name; \

  do { \

    jvalue p; p.j = (jlong) (value); \

    Handle* e = longs.get(p.j); \

    if (e == NULL) { \

      oop o = java_lang_boxing_object::create(T_LONG, &p, CHECK_NULL); \

      Handle h(THREAD, o); \

      longs.put(p.j, h); \

      name = h(); \

    } else { \

      name = (*e)(); \

    } \

  } while (0)

#define CSTRING_TO_JSTRING(name, value) \

  Handle name; \

  do { \

    if (value != NULL) { \

      Handle* e = strings.get(value); \

      if (e == NULL) { \

        Handle h = java_lang_String::create_from_str(value, CHECK_NULL); \

        strings.put(value, h); \

        name = h; \

      } else { \

        name = (*e); \

      } \

    } \

  } while (0)

jobjectArray readConfiguration0(JNIEnv *env, TRAPS) {

  ResourceMark rm;

  HandleMark hm;

  // Used to canonicalize Long and String values.

  ResourceHashtable<jlong, Handle> longs;

  ResourceHashtable<const char*, Handle, &CompilerToVM::cstring_hash, &CompilerToVM::cstring_equals> strings;

  jvalue prim;

  prim.z = true;  oop boxedTrueOop =  java_lang_boxing_object::create(T_BOOLEAN, &prim, CHECK_NULL);

  Handle boxedTrue(THREAD, boxedTrueOop);

  prim.z = false; oop boxedFalseOop = java_lang_boxing_object::create(T_BOOLEAN, &prim, CHECK_NULL);

  Handle boxedFalse(THREAD, boxedFalseOop);

  CompilerToVM::Data::initialize(CHECK_NULL);

  VMField::klass()->initialize(CHECK_NULL);

  VMFlag::klass()->initialize(CHECK_NULL);

  VMIntrinsicMethod::klass()->initialize(CHECK_NULL);

  int len = JVMCIVMStructs::localHotSpotVMStructs_count();

  objArrayHandle vmFields = oopFactory::new_objArray_handle(VMField::klass(), len, CHECK_NULL);

  for (int i = 0; i < len ; i++) {

    VMStructEntry vmField = JVMCIVMStructs::localHotSpotVMStructs[i];

    instanceHandle vmFieldObj = InstanceKlass::cast(VMField::klass())->allocate_instance_handle(CHECK_NULL);

    size_t name_buf_len = strlen(vmField.typeName) + strlen(vmField.fieldName) + 2 /* "::" */;

    char* name_buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, name_buf_len + 1);

    sprintf(name_buf, "%s::%s", vmField.typeName, vmField.fieldName);

    CSTRING_TO_JSTRING(name, name_buf);

    CSTRING_TO_JSTRING(type, vmField.typeString);

    VMField::set_name(vmFieldObj, name());

    VMField::set_type(vmFieldObj, type());

    VMField::set_offset(vmFieldObj, vmField.offset);

    VMField::set_address(vmFieldObj, (jlong) vmField.address);

    if (vmField.isStatic && vmField.typeString != NULL) {

      if (strcmp(vmField.typeString, "bool") == 0) {

        BOXED_BOOLEAN(box, *(jbyte*) vmField.address);

        VMField::set_value(vmFieldObj, box);

      } else if (strcmp(vmField.typeString, "int") == 0 ||

                 strcmp(vmField.typeString, "jint") == 0) {

        BOXED_LONG(box, *(jint*) vmField.address);

        VMField::set_value(vmFieldObj, box);

      } else if (strcmp(vmField.typeString, "uint64_t") == 0) {

        BOXED_LONG(box, *(uint64_t*) vmField.address);

        VMField::set_value(vmFieldObj, box);

      } else if (strcmp(vmField.typeString, "address") == 0 ||

                 strcmp(vmField.typeString, "intptr_t") == 0 ||

                 strcmp(vmField.typeString, "uintptr_t") == 0 ||

                 strcmp(vmField.typeString, "OopHandle") == 0 ||

                 strcmp(vmField.typeString, "size_t") == 0 ||

                 // All foo* types are addresses.

                 vmField.typeString[strlen(vmField.typeString) - 1] == '*') {

        BOXED_LONG(box, *((address*) vmField.address));

        VMField::set_value(vmFieldObj, box);

      } else {

        JVMCI_ERROR_NULL("VM field %s has unsupported type %s", name_buf, vmField.typeString);

      }

    }

    vmFields->obj_at_put(i, vmFieldObj());

  }

  int ints_len = JVMCIVMStructs::localHotSpotVMIntConstants_count();

  int longs_len = JVMCIVMStructs::localHotSpotVMLongConstants_count();

  len = ints_len + longs_len;

  objArrayHandle vmConstants = oopFactory::new_objArray_handle(SystemDictionary::Object_klass(), len * 2, CHECK_NULL);

  int insert = 0;

  for (int i = 0; i < ints_len ; i++) {

    VMIntConstantEntry c = JVMCIVMStructs::localHotSpotVMIntConstants[i];

    CSTRING_TO_JSTRING(name, c.name);

    BOXED_LONG(value, c.value);

    vmConstants->obj_at_put(insert++, name());

    vmConstants->obj_at_put(insert++, value);

  }

  for (int i = 0; i < longs_len ; i++) {

    VMLongConstantEntry c = JVMCIVMStructs::localHotSpotVMLongConstants[i];

    CSTRING_TO_JSTRING(name, c.name);

    BOXED_LONG(value, c.value);

    vmConstants->obj_at_put(insert++, name());

    vmConstants->obj_at_put(insert++, value);

  }

  assert(insert == len * 2, "must be");

  len = JVMCIVMStructs::localHotSpotVMAddresses_count();

  objArrayHandle vmAddresses = oopFactory::new_objArray_handle(SystemDictionary::Object_klass(), len * 2, CHECK_NULL);

  for (int i = 0; i < len ; i++) {

    VMAddressEntry a = JVMCIVMStructs::localHotSpotVMAddresses[i];

    CSTRING_TO_JSTRING(name, a.name);

    BOXED_LONG(value, a.value);

    vmAddresses->obj_at_put(i * 2, name());

    vmAddresses->obj_at_put(i * 2 + 1, value);

  }

#define COUNT_FLAG(ignore) +1

#ifdef ASSERT

#define CHECK_FLAG(type, name) { \

  JVMFlag* flag = JVMFlag::find_flag(#name, strlen(#name), /*allow_locked*/ true, /* return_flag */ true); \

  assert(flag != NULL, "No such flag named " #name); \

  assert(flag->is_##type(), "JVMFlag " #name " is not of type " #type); \

}

#else

#define CHECK_FLAG(type, name)

#endif

#define ADD_FLAG(type, name, convert) { \

  CHECK_FLAG(type, name) \

  instanceHandle vmFlagObj = InstanceKlass::cast(VMFlag::klass())->allocate_instance_handle(CHECK_NULL); \

  CSTRING_TO_JSTRING(fname, #name); \

  CSTRING_TO_JSTRING(ftype, #type); \

  VMFlag::set_name(vmFlagObj, fname()); \

  VMFlag::set_type(vmFlagObj, ftype()); \

  convert(value, name); \

  VMFlag::set_value(vmFlagObj, value); \

  vmFlags->obj_at_put(i++, vmFlagObj()); \

}

#define ADD_BOOL_FLAG(name)  ADD_FLAG(bool, name, BOXED_BOOLEAN)

#define ADD_INTX_FLAG(name)  ADD_FLAG(intx, name, BOXED_LONG)

#define ADD_UINTX_FLAG(name) ADD_FLAG(uintx, name, BOXED_LONG)

  len = 0 + PREDEFINED_CONFIG_FLAGS(COUNT_FLAG, COUNT_FLAG, COUNT_FLAG);

  objArrayHandle vmFlags = oopFactory::new_objArray_handle(VMFlag::klass(), len, CHECK_NULL);

  int i = 0;

  PREDEFINED_CONFIG_FLAGS(ADD_BOOL_FLAG, ADD_INTX_FLAG, ADD_UINTX_FLAG)

  objArrayHandle vmIntrinsics = CompilerToVM::initialize_intrinsics(CHECK_NULL);

  objArrayOop data = oopFactory::new_objArray(SystemDictionary::Object_klass(), 5, CHECK_NULL);

  data->obj_at_put(0, vmFields());

  data->obj_at_put(1, vmConstants());

  data->obj_at_put(2, vmAddresses());

  data->obj_at_put(3, vmFlags());

  data->obj_at_put(4, vmIntrinsics());

  return (jobjectArray) JNIHandles::make_local(THREAD, data);

#undef COUNT_FLAG

#undef ADD_FLAG

#undef ADD_BOOL_FLAG

#undef ADD_INTX_FLAG

#undef ADD_UINTX_FLAG

#undef CHECK_FLAG

}