1 /*
2 * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef CPU_SPARC_VM_GLOBALS_SPARC_HPP
26 #define CPU_SPARC_VM_GLOBALS_SPARC_HPP
27
28 #include "utilities/globalDefinitions.hpp"
29 #include "utilities/macros.hpp"
30
31 // Sets the default values for platform dependent flags used by the runtime system.
32 // (see globals.hpp)
33
34 // For sparc we do not do call backs when a thread is in the interpreter, because the
35 // interpreter dispatch needs at least two instructions - first to load the dispatch address
36 // in a register, and second to jmp. The swapping of the dispatch table may occur _after_
37 // the load of the dispatch address and hence the jmp would still go to the location
38 // according to the prior table. So, we let the thread continue and let it block by itself.
39 define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second
40 define_pd_global(bool, ConvertSleepToYield, false); // do not convert sleep(0) to yield. Helps GUI
41 define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress
42 define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this
43
44 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
45 define_pd_global(bool, TrapBasedNullChecks, false); // Not needed on sparc.
46 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast
47
48 define_pd_global(intx, CodeEntryAlignment, 32);
49 // The default setting 16/16 seems to work best.
50 // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
51 define_pd_global(intx, OptoLoopAlignment, 16); // = 4*wordSize
52 define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC
53 define_pd_global(intx, InlineSmallCode, 1500);
54
55 #define DEFAULT_STACK_YELLOW_PAGES (2)
56 #define DEFAULT_STACK_RED_PAGES (1)
57 #define DEFAULT_STACK_RESERVED_PAGES (SOLARIS_ONLY(1) NOT_SOLARIS(0))
58
59 #ifdef _LP64
60 // Stack slots are 2X larger in LP64 than in the 32 bit VM.
|
1 /*
2 * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef CPU_SPARC_VM_GLOBALS_SPARC_HPP
26 #define CPU_SPARC_VM_GLOBALS_SPARC_HPP
27
28 #include "utilities/globalDefinitions.hpp"
29 #include "utilities/macros.hpp"
30
31 // Sets the default values for platform dependent flags used by the runtime system.
32 // (see globals.hpp)
33
34 // For sparc we do not do call backs when a thread is in the interpreter, because the
35 // interpreter dispatch needs at least two instructions - first to load the dispatch address
36 // in a register, and second to jmp. The swapping of the dispatch table may occur _after_
37 // the load of the dispatch address and hence the jmp would still go to the location
38 // according to the prior table. So, we let the thread continue and let it block by itself.
39 define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second
40 define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress
41 define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this
42
43 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
44 define_pd_global(bool, TrapBasedNullChecks, false); // Not needed on sparc.
45 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast
46
47 define_pd_global(intx, CodeEntryAlignment, 32);
48 // The default setting 16/16 seems to work best.
49 // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
50 define_pd_global(intx, OptoLoopAlignment, 16); // = 4*wordSize
51 define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC
52 define_pd_global(intx, InlineSmallCode, 1500);
53
54 #define DEFAULT_STACK_YELLOW_PAGES (2)
55 #define DEFAULT_STACK_RED_PAGES (1)
56 #define DEFAULT_STACK_RESERVED_PAGES (SOLARIS_ONLY(1) NOT_SOLARIS(0))
57
58 #ifdef _LP64
59 // Stack slots are 2X larger in LP64 than in the 32 bit VM.
|