| /* |
| * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| // 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_<arch>.hpp |
| // ^ ^ |
| // | | |
| // implements implements |
| // | | |
| // | | |
| // stubRoutines.cpp stubRoutines_<arch>.cpp |
| // stubRoutines_<os_family>.cpp stubGenerator_<arch>.cpp |
| // stubRoutines_<os_arch>.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_<arch>.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_<arch>.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; |
| #include "incls/_stubRoutines_pd.hpp.incl" // machine-specific parts |
| |
| 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_ArithmeticException_entry; |
| static address _throw_NullPointerException_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; |
| 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; |
| |
| // 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; |
| 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; |
| |
| // these are recommended but optional: |
| static address _checkcast_arraycopy; |
| static address _unsafe_arraycopy; |
| static address _generic_arraycopy; |
| |
| public: |
| // Initialization/Testing |
| static void initialize1(); // must happen before universe::genesis |
| static void initialize2(); // must happen after universe::genesis |
| |
| static bool contains(address addr) { |
| return |
| (_code1 != NULL && _code1->blob_contains(addr)) || |
| (_code2 != NULL && _code2->blob_contains(addr)) ; |
| } |
| |
| // 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, |
| methodOopDesc* 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_ArithmeticException_entry() { return _throw_ArithmeticException_entry; } |
| static address throw_NullPointerException_entry() { return _throw_NullPointerException_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 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() { return _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() { return _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() { return _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() { return _arrayof_oop_disjoint_arraycopy; } |
| |
| static address checkcast_arraycopy() { return _checkcast_arraycopy; } |
| static address unsafe_arraycopy() { return _unsafe_arraycopy; } |
| static address generic_arraycopy() { return _generic_arraycopy; } |
| |
| // |
| // 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 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); |
| }; |
