Mercurial > jdk8-mips64-public > hotspot / annotate
src/cpu/ppc/vm/vm_version_ppc.hpp@41b780b43b74 (annotated)
src/cpu/ppc/vm/vm_version_ppc.hpp
Wed, 27 Nov 2013 16:16:21 -0800
- author
- goetz
- date
- Wed, 27 Nov 2013 16:16:21 -0800
- changeset 6490
- 41b780b43b74
- parent 6458
- ec28f9c041ff
- child 6515
- 71a71b0bc844
- permissions
- -rw-r--r--
8029015: PPC64 (part 216): opto: trap based null and range checks
Summary: On PPC64 use tdi instruction that does a compare and raises SIGTRAP for NULL and range checks.
Reviewed-by: kvn
| goetz@6458 | 1 | /* |
| goetz@6458 | 2 | * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| goetz@6458 | 3 | * Copyright 2012, 2013 SAP AG. All rights reserved. |
| goetz@6458 | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| goetz@6458 | 5 | * |
| goetz@6458 | 6 | * This code is free software; you can redistribute it and/or modify it |
| goetz@6458 | 7 | * under the terms of the GNU General Public License version 2 only, as |
| goetz@6458 | 8 | * published by the Free Software Foundation. |
| goetz@6458 | 9 | * |
| goetz@6458 | 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| goetz@6458 | 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| goetz@6458 | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| goetz@6458 | 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| goetz@6458 | 14 | * accompanied this code). |
| goetz@6458 | 15 | * |
| goetz@6458 | 16 | * You should have received a copy of the GNU General Public License version |
| goetz@6458 | 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| goetz@6458 | 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| goetz@6458 | 19 | * |
| goetz@6458 | 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| goetz@6458 | 21 | * or visit www.oracle.com if you need additional information or have any |
| goetz@6458 | 22 | * questions. |
| goetz@6458 | 23 | * |
| goetz@6458 | 24 | */ |
| goetz@6458 | 25 | |
| goetz@6458 | 26 | #ifndef CPU_PPC_VM_VM_VERSION_PPC_HPP |
| goetz@6458 | 27 | #define CPU_PPC_VM_VM_VERSION_PPC_HPP |
| goetz@6458 | 28 | |
| goetz@6458 | 29 | #include "runtime/globals_extension.hpp" |
| goetz@6458 | 30 | #include "runtime/vm_version.hpp" |
| goetz@6458 | 31 | |
| goetz@6458 | 32 | class VM_Version: public Abstract_VM_Version { |
| goetz@6458 | 33 | protected: |
| goetz@6458 | 34 | enum Feature_Flag { |
| goetz@6458 | 35 | fsqrt, |
| goetz@6458 | 36 | isel, |
| goetz@6458 | 37 | lxarxeh, |
| goetz@6458 | 38 | cmpb, |
| goetz@6458 | 39 | popcntb, |
| goetz@6458 | 40 | popcntw, |
| goetz@6458 | 41 | fcfids, |
| goetz@6458 | 42 | vand, |
| goetz@6458 | 43 | dcba, |
| goetz@6458 | 44 | num_features // last entry to count features |
| goetz@6458 | 45 | }; |
| goetz@6458 | 46 | enum Feature_Flag_Set { |
| goetz@6458 | 47 | unknown_m = 0, |
| goetz@6458 | 48 | fsqrt_m = (1 << fsqrt ), |
| goetz@6458 | 49 | isel_m = (1 << isel ), |
| goetz@6458 | 50 | lxarxeh_m = (1 << lxarxeh), |
| goetz@6458 | 51 | cmpb_m = (1 << cmpb ), |
| goetz@6458 | 52 | popcntb_m = (1 << popcntb), |
| goetz@6458 | 53 | popcntw_m = (1 << popcntw), |
| goetz@6458 | 54 | fcfids_m = (1 << fcfids ), |
| goetz@6458 | 55 | vand_m = (1 << vand ), |
| goetz@6458 | 56 | dcba_m = (1 << dcba ), |
| goetz@6458 | 57 | all_features_m = -1 |
| goetz@6458 | 58 | }; |
| goetz@6458 | 59 | static int _features; |
| goetz@6458 | 60 | static int _measured_cache_line_size; |
| goetz@6458 | 61 | static const char* _features_str; |
| goetz@6458 | 62 | static bool _is_determine_features_test_running; |
| goetz@6458 | 63 | |
| goetz@6458 | 64 | static void print_features(); |
| goetz@6458 | 65 | static void determine_features(); // also measures cache line size |
| goetz@6458 | 66 | static void determine_section_size(); |
| goetz@6458 | 67 | static void power6_micro_bench(); |
| goetz@6458 | 68 | public: |
| goetz@6458 | 69 | // Initialization |
| goetz@6458 | 70 | static void initialize(); |
| goetz@6458 | 71 | |
| goetz@6458 | 72 | static bool is_determine_features_test_running() { return _is_determine_features_test_running; } |
| goetz@6458 | 73 | // CPU instruction support |
| goetz@6458 | 74 | static bool has_fsqrt() { return (_features & fsqrt_m) != 0; } |
| goetz@6458 | 75 | static bool has_isel() { return (_features & isel_m) != 0; } |
| goetz@6458 | 76 | static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; } |
| goetz@6458 | 77 | static bool has_cmpb() { return (_features & cmpb_m) != 0; } |
| goetz@6458 | 78 | static bool has_popcntb() { return (_features & popcntb_m) != 0; } |
| goetz@6458 | 79 | static bool has_popcntw() { return (_features & popcntw_m) != 0; } |
| goetz@6458 | 80 | static bool has_fcfids() { return (_features & fcfids_m) != 0; } |
| goetz@6458 | 81 | static bool has_vand() { return (_features & vand_m) != 0; } |
| goetz@6458 | 82 | static bool has_dcba() { return (_features & dcba_m) != 0; } |
| goetz@6458 | 83 | |
| goetz@6458 | 84 | static const char* cpu_features() { return _features_str; } |
| goetz@6458 | 85 | |
| goetz@6458 | 86 | static int get_cache_line_size() { return _measured_cache_line_size; } |
| goetz@6458 | 87 | |
| goetz@6458 | 88 | // Assembler testing |
| goetz@6458 | 89 | static void allow_all(); |
| goetz@6458 | 90 | static void revert(); |
| goetz@6458 | 91 | }; |
| goetz@6458 | 92 | |
| goetz@6458 | 93 | #endif // CPU_PPC_VM_VM_VERSION_PPC_HPP |
