Fri, 29 Apr 2011 11:15:30 -0700
Merge
duke@435 | 1 | /* |
trims@1907 | 2 | * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef CPU_SPARC_VM_STUBROUTINES_SPARC_HPP |
stefank@2314 | 26 | #define CPU_SPARC_VM_STUBROUTINES_SPARC_HPP |
stefank@2314 | 27 | |
duke@435 | 28 | // This file holds the platform specific parts of the StubRoutines |
duke@435 | 29 | // definition. See stubRoutines.hpp for a description on how to |
duke@435 | 30 | // extend it. |
duke@435 | 31 | |
duke@435 | 32 | |
duke@435 | 33 | // So unfortunately c2 will call with a pc from a frame object |
duke@435 | 34 | // (already adjusted) and a raw pc (unadjusted), so we need to check both. |
duke@435 | 35 | // It didn't use to be like this before adapter removal. |
duke@435 | 36 | static bool returns_to_call_stub(address return_pc) { |
duke@435 | 37 | return ((return_pc + frame::pc_return_offset) == _call_stub_return_address) || |
duke@435 | 38 | (return_pc == _call_stub_return_address ); |
duke@435 | 39 | } |
duke@435 | 40 | |
duke@435 | 41 | enum /* platform_dependent_constants */ { |
duke@435 | 42 | // %%%%%%%% May be able to shrink this a lot |
twisti@1734 | 43 | code_size1 = 20000, // simply increase if too small (assembler will crash if too small) |
twisti@1734 | 44 | code_size2 = 20000 // simply increase if too small (assembler will crash if too small) |
twisti@1734 | 45 | }; |
twisti@1734 | 46 | |
twisti@1734 | 47 | // MethodHandles adapters |
twisti@1734 | 48 | enum method_handles_platform_dependent_constants { |
twisti@2201 | 49 | method_handles_adapters_code_size = 15000 |
duke@435 | 50 | }; |
duke@435 | 51 | |
duke@435 | 52 | class Sparc { |
duke@435 | 53 | friend class StubGenerator; |
duke@435 | 54 | |
duke@435 | 55 | public: |
duke@435 | 56 | enum { nof_instance_allocators = 10 }; |
duke@435 | 57 | |
duke@435 | 58 | // allocator lock values |
duke@435 | 59 | enum { |
duke@435 | 60 | unlocked = 0, |
duke@435 | 61 | locked = 1 |
duke@435 | 62 | }; |
duke@435 | 63 | |
duke@435 | 64 | enum { |
duke@435 | 65 | v8_oop_lock_ignore_bits = 2, |
duke@435 | 66 | v8_oop_lock_bits = 4, |
duke@435 | 67 | nof_v8_oop_lock_cache_entries = 1 << (v8_oop_lock_bits+v8_oop_lock_ignore_bits), |
duke@435 | 68 | v8_oop_lock_mask = right_n_bits(v8_oop_lock_bits), |
duke@435 | 69 | v8_oop_lock_mask_in_place = v8_oop_lock_mask << v8_oop_lock_ignore_bits |
duke@435 | 70 | }; |
duke@435 | 71 | |
duke@435 | 72 | static int _v8_oop_lock_cache[nof_v8_oop_lock_cache_entries]; |
duke@435 | 73 | |
duke@435 | 74 | private: |
duke@435 | 75 | static address _test_stop_entry; |
duke@435 | 76 | static address _stop_subroutine_entry; |
duke@435 | 77 | static address _flush_callers_register_windows_entry; |
duke@435 | 78 | |
duke@435 | 79 | static int _atomic_memory_operation_lock; |
duke@435 | 80 | |
duke@435 | 81 | static address _partial_subtype_check; |
duke@435 | 82 | |
duke@435 | 83 | public: |
duke@435 | 84 | // %%% global lock for everyone who needs to use atomic_compare_and_exchange |
duke@435 | 85 | // %%% or atomic_increment -- should probably use more locks for more |
duke@435 | 86 | // %%% scalability-- for instance one for each eden space or group of |
duke@435 | 87 | |
duke@435 | 88 | // address of the lock for atomic_compare_and_exchange |
duke@435 | 89 | static int* atomic_memory_operation_lock_addr() { return &_atomic_memory_operation_lock; } |
duke@435 | 90 | |
duke@435 | 91 | // accessor and mutator for _atomic_memory_operation_lock |
duke@435 | 92 | static int atomic_memory_operation_lock() { return _atomic_memory_operation_lock; } |
duke@435 | 93 | static void set_atomic_memory_operation_lock(int value) { _atomic_memory_operation_lock = value; } |
duke@435 | 94 | |
duke@435 | 95 | // test assembler stop routine by setting registers |
duke@435 | 96 | static void (*test_stop_entry()) () { return CAST_TO_FN_PTR(void (*)(void), _test_stop_entry); } |
duke@435 | 97 | |
duke@435 | 98 | // a subroutine for debugging assembler code |
duke@435 | 99 | static address stop_subroutine_entry_address() { return (address)&_stop_subroutine_entry; } |
duke@435 | 100 | |
duke@435 | 101 | // flushes (all but current) register window |
duke@435 | 102 | static intptr_t* (*flush_callers_register_windows_func())() { return CAST_TO_FN_PTR(intptr_t* (*)(void), _flush_callers_register_windows_entry); } |
duke@435 | 103 | |
duke@435 | 104 | static address partial_subtype_check() { return _partial_subtype_check; } |
duke@435 | 105 | }; |
stefank@2314 | 106 | |
stefank@2314 | 107 | #endif // CPU_SPARC_VM_STUBROUTINES_SPARC_HPP |