Mercurial > jdk8-mips64-public > hotspot / file revision
src/cpu/ppc/vm/globals_ppc.hpp@ec28f9c041ff
src/cpu/ppc/vm/globals_ppc.hpp
Fri, 02 Aug 2013 16:46:45 +0200
- author
- goetz
- date
- Fri, 02 Aug 2013 16:46:45 +0200
- changeset 6458
- ec28f9c041ff
- child 6473
- bd29f2c96a5f
- permissions
- -rw-r--r--
8019972: PPC64 (part 9): platform files for interpreter only VM.
Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs.
Reviewed-by: kvn
1 /*
2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2013 SAP AG. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
26 #ifndef CPU_PPC_VM_GLOBALS_PPC_HPP
27 #define CPU_PPC_VM_GLOBALS_PPC_HPP
29 #include "utilities/globalDefinitions.hpp"
30 #include "utilities/macros.hpp"
32 // Sets the default values for platform dependent flags used by the runtime system.
33 // (see globals.hpp)
35 define_pd_global(bool, ConvertSleepToYield, true);
36 define_pd_global(bool, ShareVtableStubs, false); // Improves performance markedly for mtrt and compress.
37 define_pd_global(bool, NeedsDeoptSuspend, false); // Only register window machines need this.
40 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks.
41 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast.
43 // Use large code-entry alignment.
44 define_pd_global(intx, CodeEntryAlignment, 128);
45 define_pd_global(intx, OptoLoopAlignment, 16);
46 define_pd_global(intx, InlineFrequencyCount, 100);
47 define_pd_global(intx, InlineSmallCode, 1500);
49 define_pd_global(intx, PreInflateSpin, 10);
51 // Flags for template interpreter.
52 define_pd_global(bool, RewriteBytecodes, true);
53 define_pd_global(bool, RewriteFrequentPairs, true);
55 define_pd_global(bool, UseMembar, false);
57 // GC Ergo Flags
58 define_pd_global(intx, CMSYoungGenPerWorker, 16*M); // Default max size of CMS young gen, per GC worker thread.
61 // Platform dependent flag handling: flags only defined on this platform.
62 #define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \
63 product(uintx, PowerArchitecturePPC64, 0, \
64 "CPU Version: x for PowerX. Currently recognizes Power5 to " \
65 "Power7. Default is 0. CPUs newer than Power7 will be " \
66 "recognized as Power7.") \
67 \
68 /* Reoptimize code-sequences of calls at runtime, e.g. replace an */ \
69 /* indirect call by a direct call. */ \
70 product(bool, ReoptimizeCallSequences, true, \
71 "Reoptimize code-sequences of calls at runtime.") \
72 \
73 product(bool, UseLoadInstructionsForStackBangingPPC64, false, \
74 "Use load instructions for stack banging.") \
75 \
76 /* special instructions */ \
77 \
78 product(bool, UseCountLeadingZerosInstructionsPPC64, true, \
79 "Use count leading zeros instructions.") \
80 \
81 product(bool, UseExtendedLoadAndReserveInstructionsPPC64, false, \
82 "Use extended versions of load-and-reserve instructions.") \
83 \
84 product(bool, UseRotateAndMaskInstructionsPPC64, true, \
85 "Use rotate and mask instructions.") \
86 \
87 product(bool, UseStaticBranchPredictionInCompareAndSwapPPC64, true, \
88 "Use static branch prediction hints in CAS operations.") \
89 \
90 /* Trap based checks. */ \
91 /* Trap based checks use the ppc trap instructions to check certain */ \
92 /* conditions. This instruction raises a SIGTRAP caught by the */ \
93 /* exception handler of the VM. */ \
94 product(bool, UseSIGTRAP, false, \
95 "Allow trap instructions that make use of SIGTRAP. Use this to " \
96 "switch off all optimizations requiring SIGTRAP.") \
97 product(bool, TrapBasedICMissChecks, true, \
98 "Raise and handle SIGTRAP if inline cache miss detected.") \
99 product(bool, TrapBasedNotEntrantChecks, true, \
100 "Raise and handle SIGTRAP if calling not entrant or zombie" \
101 " method.") \
102 product(bool, TrapBasedNullChecks, true, \
103 "Generate code for null checks that uses a cmp and trap " \
104 "instruction raising SIGTRAP. This is only used if an access to" \
105 "null (+offset) will not raise a SIGSEGV.") \
106 product(bool, TrapBasedRangeChecks, true, \
107 "Raise and handle SIGTRAP if array out of bounds check fails.") \
108 product(bool, TraceTraps, false, "Trace all traps the signal handler" \
109 "handles.") \
110 \
111 product(bool, ZapMemory, false, "Write 0x0101... to empty memory." \
112 " Use this to ease debugging.") \
116 #endif // CPU_PPC_VM_GLOBALS_PPC_HPP
