/* * Copyright (c) 1997, 2015, 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. * */ #ifndef SHARE_VM_RUNTIME_STUBROUTINES_HPP #define SHARE_VM_RUNTIME_STUBROUTINES_HPP #include "code/codeBlob.hpp" #include "memory/allocation.hpp" #include "runtime/frame.hpp" #include "runtime/mutexLocker.hpp" #include "runtime/stubCodeGenerator.hpp" #include "utilities/top.hpp" #ifdef TARGET_ARCH_x86 # include "nativeInst_x86.hpp" #endif #ifdef TARGET_ARCH_sparc # include "nativeInst_sparc.hpp" #endif #ifdef TARGET_ARCH_zero # include "nativeInst_zero.hpp" #endif #ifdef TARGET_ARCH_arm # include "nativeInst_arm.hpp" #endif #ifdef TARGET_ARCH_ppc # include "nativeInst_ppc.hpp" #endif // StubRoutines provides entry points to assembly routines used by // compiled code and the run-time system. Platform-specific entry // points are defined in the platform-specific inner class. // // Class scheme: // // platform-independent platform-dependent // // stubRoutines.hpp <-- included -- stubRoutines_.hpp // ^ ^ // | | // implements implements // | | // | | // stubRoutines.cpp stubRoutines_.cpp // stubRoutines_.cpp stubGenerator_.cpp // stubRoutines_.cpp // // Note 1: The important thing is a clean decoupling between stub // entry points (interfacing to the whole vm; i.e., 1-to-n // relationship) and stub generators (interfacing only to // the entry points implementation; i.e., 1-to-1 relationship). // This significantly simplifies changes in the generator // structure since the rest of the vm is not affected. // // Note 2: stubGenerator_.cpp contains a minimal portion of // machine-independent code; namely the generator calls of // the generator functions that are used platform-independently. // However, it comes with the advantage of having a 1-file // implementation of the generator. It should be fairly easy // to change, should it become a problem later. // // Scheme for adding a new entry point: // // 1. determine if it's a platform-dependent or independent entry point // a) if platform independent: make subsequent changes in the independent files // b) if platform dependent: make subsequent changes in the dependent files // 2. add a private instance variable holding the entry point address // 3. add a public accessor function to the instance variable // 4. implement the corresponding generator function in the platform-dependent // stubGenerator_.cpp file and call the function in generate_all() of that file class StubRoutines: AllStatic { public: enum platform_independent_constants { max_size_of_parameters = 256 // max. parameter size supported by megamorphic lookups }; // Dependencies friend class StubGenerator; #if defined STUBROUTINES_MD_HPP # include STUBROUTINES_MD_HPP #elif defined TARGET_ARCH_MODEL_x86_32 # include "stubRoutines_x86_32.hpp" #elif defined TARGET_ARCH_MODEL_x86_64 # include "stubRoutines_x86_64.hpp" #elif defined TARGET_ARCH_MODEL_sparc # include "stubRoutines_sparc.hpp" #elif defined TARGET_ARCH_MODEL_zero # include "stubRoutines_zero.hpp" #elif defined TARGET_ARCH_MODEL_ppc_64 # include "stubRoutines_ppc_64.hpp" #endif static jint _verify_oop_count; static address _verify_oop_subroutine_entry; static address _call_stub_return_address; // the return PC, when returning to a call stub static address _call_stub_entry; static address _forward_exception_entry; static address _catch_exception_entry; static address _throw_AbstractMethodError_entry; static address _throw_IncompatibleClassChangeError_entry; static address _throw_NullPointerException_at_call_entry; static address _throw_StackOverflowError_entry; static address _handler_for_unsafe_access_entry; static address _atomic_xchg_entry; static address _atomic_xchg_ptr_entry; static address _atomic_store_entry; static address _atomic_store_ptr_entry; static address _atomic_cmpxchg_entry; static address _atomic_cmpxchg_ptr_entry; static address _atomic_cmpxchg_long_entry; static address _atomic_add_entry; static address _atomic_add_ptr_entry; static address _fence_entry; static address _d2i_wrapper; static address _d2l_wrapper; static jint _fpu_cntrl_wrd_std; static jint _fpu_cntrl_wrd_24; static jint _fpu_cntrl_wrd_64; static jint _fpu_cntrl_wrd_trunc; static jint _mxcsr_std; static jint _fpu_subnormal_bias1[3]; static jint _fpu_subnormal_bias2[3]; static BufferBlob* _code1; // code buffer for initial routines static BufferBlob* _code2; // code buffer for all other routines // Leaf routines which implement arraycopy and their addresses // arraycopy operands aligned on element type boundary static address _jbyte_arraycopy; static address _jshort_arraycopy; static address _jint_arraycopy; static address _jlong_arraycopy; static address _oop_arraycopy, _oop_arraycopy_uninit; static address _jbyte_disjoint_arraycopy; static address _jshort_disjoint_arraycopy; static address _jint_disjoint_arraycopy; static address _jlong_disjoint_arraycopy; static address _oop_disjoint_arraycopy, _oop_disjoint_arraycopy_uninit; // arraycopy operands aligned on zero'th element boundary // These are identical to the ones aligned aligned on an // element type boundary, except that they assume that both // source and destination are HeapWord aligned. static address _arrayof_jbyte_arraycopy; static address _arrayof_jshort_arraycopy; static address _arrayof_jint_arraycopy; static address _arrayof_jlong_arraycopy; static address _arrayof_oop_arraycopy, _arrayof_oop_arraycopy_uninit; static address _arrayof_jbyte_disjoint_arraycopy; static address _arrayof_jshort_disjoint_arraycopy; static address _arrayof_jint_disjoint_arraycopy; static address _arrayof_jlong_disjoint_arraycopy; static address _arrayof_oop_disjoint_arraycopy, _arrayof_oop_disjoint_arraycopy_uninit; // these are recommended but optional: static address _checkcast_arraycopy, _checkcast_arraycopy_uninit; static address _unsafe_arraycopy; static address _generic_arraycopy; static address _jbyte_fill; static address _jshort_fill; static address _jint_fill; static address _arrayof_jbyte_fill; static address _arrayof_jshort_fill; static address _arrayof_jint_fill; // zero heap space aligned to jlong (8 bytes) static address _zero_aligned_words; static address _aescrypt_encryptBlock; static address _aescrypt_decryptBlock; static address _cipherBlockChaining_encryptAESCrypt; static address _cipherBlockChaining_decryptAESCrypt; static address _sha1_implCompress; static address _sha1_implCompressMB; static address _sha256_implCompress; static address _sha256_implCompressMB; static address _sha512_implCompress; static address _sha512_implCompressMB; static address _updateBytesCRC32; static address _crc_table_adr; static address _multiplyToLen; static address _squareToLen; static address _mulAdd; static address _montgomeryMultiply; static address _montgomerySquare; // These are versions of the java.lang.Math methods which perform // the same operations as the intrinsic version. They are used for // constant folding in the compiler to ensure equivalence. If the // intrinsic version returns the same result as the strict version // then they can be set to the appropriate function from // SharedRuntime. static double (*_intrinsic_log)(double); static double (*_intrinsic_log10)(double); static double (*_intrinsic_exp)(double); static double (*_intrinsic_pow)(double, double); static double (*_intrinsic_sin)(double); static double (*_intrinsic_cos)(double); static double (*_intrinsic_tan)(double); // Safefetch stubs. static address _safefetch32_entry; static address _safefetch32_fault_pc; static address _safefetch32_continuation_pc; static address _safefetchN_entry; static address _safefetchN_fault_pc; static address _safefetchN_continuation_pc; public: // Initialization/Testing static void initialize1(); // must happen before universe::genesis static void initialize2(); // must happen after universe::genesis static bool is_stub_code(address addr) { return contains(addr); } static bool contains(address addr) { return (_code1 != NULL && _code1->blob_contains(addr)) || (_code2 != NULL && _code2->blob_contains(addr)) ; } static CodeBlob* code1() { return _code1; } static CodeBlob* code2() { return _code2; } // Debugging static jint verify_oop_count() { return _verify_oop_count; } static jint* verify_oop_count_addr() { return &_verify_oop_count; } // a subroutine for debugging the GC static address verify_oop_subroutine_entry_address() { return (address)&_verify_oop_subroutine_entry; } static address catch_exception_entry() { return _catch_exception_entry; } // Calls to Java typedef void (*CallStub)( address link, intptr_t* result, BasicType result_type, Method* method, address entry_point, intptr_t* parameters, int size_of_parameters, TRAPS ); static CallStub call_stub() { return CAST_TO_FN_PTR(CallStub, _call_stub_entry); } // Exceptions static address forward_exception_entry() { return _forward_exception_entry; } // Implicit exceptions static address throw_AbstractMethodError_entry() { return _throw_AbstractMethodError_entry; } static address throw_IncompatibleClassChangeError_entry(){ return _throw_IncompatibleClassChangeError_entry; } static address throw_NullPointerException_at_call_entry(){ return _throw_NullPointerException_at_call_entry; } static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; } // Exceptions during unsafe access - should throw Java exception rather // than crash. static address handler_for_unsafe_access() { return _handler_for_unsafe_access_entry; } static address atomic_xchg_entry() { return _atomic_xchg_entry; } static address atomic_xchg_ptr_entry() { return _atomic_xchg_ptr_entry; } static address atomic_store_entry() { return _atomic_store_entry; } static address atomic_store_ptr_entry() { return _atomic_store_ptr_entry; } static address atomic_cmpxchg_entry() { return _atomic_cmpxchg_entry; } static address atomic_cmpxchg_ptr_entry() { return _atomic_cmpxchg_ptr_entry; } static address atomic_cmpxchg_long_entry() { return _atomic_cmpxchg_long_entry; } static address atomic_add_entry() { return _atomic_add_entry; } static address atomic_add_ptr_entry() { return _atomic_add_ptr_entry; } static address fence_entry() { return _fence_entry; } static address d2i_wrapper() { return _d2i_wrapper; } static address d2l_wrapper() { return _d2l_wrapper; } static jint fpu_cntrl_wrd_std() { return _fpu_cntrl_wrd_std; } static address addr_fpu_cntrl_wrd_std() { return (address)&_fpu_cntrl_wrd_std; } static address addr_fpu_cntrl_wrd_24() { return (address)&_fpu_cntrl_wrd_24; } static address addr_fpu_cntrl_wrd_64() { return (address)&_fpu_cntrl_wrd_64; } static address addr_fpu_cntrl_wrd_trunc() { return (address)&_fpu_cntrl_wrd_trunc; } static address addr_mxcsr_std() { return (address)&_mxcsr_std; } static address addr_fpu_subnormal_bias1() { return (address)&_fpu_subnormal_bias1; } static address addr_fpu_subnormal_bias2() { return (address)&_fpu_subnormal_bias2; } static address select_arraycopy_function(BasicType t, bool aligned, bool disjoint, const char* &name, bool dest_uninitialized); static address jbyte_arraycopy() { return _jbyte_arraycopy; } static address jshort_arraycopy() { return _jshort_arraycopy; } static address jint_arraycopy() { return _jint_arraycopy; } static address jlong_arraycopy() { return _jlong_arraycopy; } static address oop_arraycopy(bool dest_uninitialized = false) { return dest_uninitialized ? _oop_arraycopy_uninit : _oop_arraycopy; } static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; } static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; } static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; } static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; } static address oop_disjoint_arraycopy(bool dest_uninitialized = false) { return dest_uninitialized ? _oop_disjoint_arraycopy_uninit : _oop_disjoint_arraycopy; } static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; } static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; } static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; } static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; } static address arrayof_oop_arraycopy(bool dest_uninitialized = false) { return dest_uninitialized ? _arrayof_oop_arraycopy_uninit : _arrayof_oop_arraycopy; } static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; } static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; } static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; } static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; } static address arrayof_oop_disjoint_arraycopy(bool dest_uninitialized = false) { return dest_uninitialized ? _arrayof_oop_disjoint_arraycopy_uninit : _arrayof_oop_disjoint_arraycopy; } static address checkcast_arraycopy(bool dest_uninitialized = false) { return dest_uninitialized ? _checkcast_arraycopy_uninit : _checkcast_arraycopy; } static address unsafe_arraycopy() { return _unsafe_arraycopy; } static address generic_arraycopy() { return _generic_arraycopy; } static address jbyte_fill() { return _jbyte_fill; } static address jshort_fill() { return _jshort_fill; } static address jint_fill() { return _jint_fill; } static address arrayof_jbyte_fill() { return _arrayof_jbyte_fill; } static address arrayof_jshort_fill() { return _arrayof_jshort_fill; } static address arrayof_jint_fill() { return _arrayof_jint_fill; } static address aescrypt_encryptBlock() { return _aescrypt_encryptBlock; } static address aescrypt_decryptBlock() { return _aescrypt_decryptBlock; } static address cipherBlockChaining_encryptAESCrypt() { return _cipherBlockChaining_encryptAESCrypt; } static address cipherBlockChaining_decryptAESCrypt() { return _cipherBlockChaining_decryptAESCrypt; } static address sha1_implCompress() { return _sha1_implCompress; } static address sha1_implCompressMB() { return _sha1_implCompressMB; } static address sha256_implCompress() { return _sha256_implCompress; } static address sha256_implCompressMB() { return _sha256_implCompressMB; } static address sha512_implCompress() { return _sha512_implCompress; } static address sha512_implCompressMB() { return _sha512_implCompressMB; } static address updateBytesCRC32() { return _updateBytesCRC32; } static address crc_table_addr() { return _crc_table_adr; } static address multiplyToLen() {return _multiplyToLen; } static address squareToLen() {return _squareToLen; } static address mulAdd() {return _mulAdd; } static address montgomeryMultiply() { return _montgomeryMultiply; } static address montgomerySquare() { return _montgomerySquare; } static address select_fill_function(BasicType t, bool aligned, const char* &name); static address zero_aligned_words() { return _zero_aligned_words; } static double intrinsic_log(double d) { assert(_intrinsic_log != NULL, "must be defined"); return _intrinsic_log(d); } static double intrinsic_log10(double d) { assert(_intrinsic_log != NULL, "must be defined"); return _intrinsic_log10(d); } static double intrinsic_exp(double d) { assert(_intrinsic_exp != NULL, "must be defined"); return _intrinsic_exp(d); } static double intrinsic_pow(double d, double d2) { assert(_intrinsic_pow != NULL, "must be defined"); return _intrinsic_pow(d, d2); } static double intrinsic_sin(double d) { assert(_intrinsic_sin != NULL, "must be defined"); return _intrinsic_sin(d); } static double intrinsic_cos(double d) { assert(_intrinsic_cos != NULL, "must be defined"); return _intrinsic_cos(d); } static double intrinsic_tan(double d) { assert(_intrinsic_tan != NULL, "must be defined"); return _intrinsic_tan(d); } // // Safefetch stub support // typedef int (*SafeFetch32Stub)(int* adr, int errValue); typedef intptr_t (*SafeFetchNStub) (intptr_t* adr, intptr_t errValue); static SafeFetch32Stub SafeFetch32_stub() { return CAST_TO_FN_PTR(SafeFetch32Stub, _safefetch32_entry); } static SafeFetchNStub SafeFetchN_stub() { return CAST_TO_FN_PTR(SafeFetchNStub, _safefetchN_entry); } static bool is_safefetch_fault(address pc) { return pc != NULL && (pc == _safefetch32_fault_pc || pc == _safefetchN_fault_pc); } static address continuation_for_safefetch_fault(address pc) { assert(_safefetch32_continuation_pc != NULL && _safefetchN_continuation_pc != NULL, "not initialized"); if (pc == _safefetch32_fault_pc) return _safefetch32_continuation_pc; if (pc == _safefetchN_fault_pc) return _safefetchN_continuation_pc; ShouldNotReachHere(); return NULL; } // // Default versions of the above arraycopy functions for platforms which do // not have specialized versions // static void jbyte_copy (jbyte* src, jbyte* dest, size_t count); static void jshort_copy (jshort* src, jshort* dest, size_t count); static void jint_copy (jint* src, jint* dest, size_t count); static void jlong_copy (jlong* src, jlong* dest, size_t count); static void oop_copy (oop* src, oop* dest, size_t count); static void oop_copy_uninit(oop* src, oop* dest, size_t count); static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count); static void arrayof_jshort_copy (HeapWord* src, HeapWord* dest, size_t count); static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count); static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count); static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count); static void arrayof_oop_copy_uninit(HeapWord* src, HeapWord* dest, size_t count); }; // Safefetch allows to load a value from a location that's not known // to be valid. If the load causes a fault, the error value is returned. inline int SafeFetch32(int* adr, int errValue) { assert(StubRoutines::SafeFetch32_stub(), "stub not yet generated"); return StubRoutines::SafeFetch32_stub()(adr, errValue); } inline intptr_t SafeFetchN(intptr_t* adr, intptr_t errValue) { assert(StubRoutines::SafeFetchN_stub(), "stub not yet generated"); return StubRoutines::SafeFetchN_stub()(adr, errValue); } #endif // SHARE_VM_RUNTIME_STUBROUTINES_HPP