January 2014 - aarch64-port-dev

hg: aarch64-port/jdk8/hotspot: 3 new changesets
by aph＠redhat.com 17 Jan '14

17 Jan '14

Changeset: e11bc6e52e67 Author: aph Date: 2014-01-17 12:58 -0500 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/e11bc6e52e67 Back out 6496. ! src/cpu/aarch64/vm/stubGenerator_aarch64.cpp Changeset: ebe1eb322f48 Author: aph Date: 2014-01-17 13:00 -0500 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/ebe1eb322f48 Implement handler for unsafe access by returning directly just after the faulting insn. ! src/os_cpu/linux_aarch64/vm/os_linux_aarch64.cpp Changeset: 895bbf967b69 Author: aph Date: 2014-01-17 13:39 -0500 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/895bbf967b69 Merge

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Implement handler_for_unsafe_access()
by Andrew Haley 17 Jan '14

17 Jan '14

Something we missed before now. It won't work with the built-in simulator, but is fine with the model. Making it work with the built- in simulator would be very fiddly, so I'm not going to attempt it. Andrew. # HG changeset patch # User aph # Date 1389882889 18000 # Thu Jan 16 09:34:49 2014 -0500 # Node ID f930dd00af0bd1592cccfd47b1f79b85b3e6d48a # Parent c40a7ed7df16bf529d6cd1b281699c7c520eaea5 Implement handler_for_unsafe_access(). diff -r c40a7ed7df16 -r f930dd00af0b src/cpu/aarch64/vm/stubGenerator_aarch64.cpp --- a/src/cpu/aarch64/vm/stubGenerator_aarch64.cpp Fri Jan 10 11:31:09 2014 +0000 +++ b/src/cpu/aarch64/vm/stubGenerator_aarch64.cpp Thu Jan 16 09:34:49 2014 -0500 @@ -67,9 +67,20 @@ // Stub Code definitions -#if 0 -static address handle_unsafe_access() { Unimplemented(); return 0; } -#endif +static address handle_unsafe_access() { + JavaThread* thread = JavaThread::current(); + address pc = thread->saved_exception_pc(); + // pc is the instruction which we must emulate + // doing a no-op is fine: return garbage from the load + // therefore, compute npc + address npc = pc + NativeCall::instruction_size; + + // request an async exception + thread->set_pending_unsafe_access_error(); + + // return address of next instruction to execute + return npc; +} class StubGenerator: public StubCodeGenerator { private: @@ -693,15 +704,19 @@ // asynchronous UnknownError when an unsafe access gets a fault that // could not be reasonably prevented by the programmer. (Example: // SIGBUS/OBJERR.) + address generate_handler_for_unsafe_access() { + StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access"); + address start = __ pc(); - // NOTE: this is used by the signal handler code as a return address - // to re-enter Java execution so it needs an x86 prolog which will - // reenter the simulator executing the generated handler code. so - // the prolog needs to adjust the sim's restart pc to enter the - // generated code at the start position then return from native to - // simulated execution. + __ push(0x3fffffff, sp); // integer registers except lr & sp + BLOCK_COMMENT("call handle_unsafe_access"); + __ call_VM_leaf(CAST_FROM_FN_PTR(address, handle_unsafe_access)); + __ mov(lr, r0); + __ pop (0x3fffffff, sp); // integer registers except lr & sp + __ br(lr); - address generate_handler_for_unsafe_access() { return 0; } + return start; + } // Non-destructive plausibility checks for oops // @@ -893,7 +908,7 @@ __ mov(c_rarg0, start); __ mov(c_rarg1, scratch); __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), 2); - __ pop(0x3fffffff, sp); // integer registers except lr & sp } + __ pop(0x3fffffff, sp); // integer registers except lr & sp } break; case BarrierSet::CardTableModRef:

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hg: aarch64-port/jdk8/jdk: Set ARCH_DATA_MODEL=64 for AArch64.
by aph＠redhat.com 17 Jan '14

17 Jan '14

Changeset: 7ecf627b6625 Author: aph Date: 2014-01-17 13:09 -0500 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/jdk/rev/7ecf627b6625 Set ARCH_DATA_MODEL=64 for AArch64. ! make/common/shared/Platform.gmk

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hg: aarch64-port/jdk8/hotspot: 7 new changesets
by aph＠redhat.com 16 Jan '14

16 Jan '14

Changeset: 8ccf0e9d5070 Author: aph Date: 2014-01-10 19:30 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/8ccf0e9d5070 Reguard the stack when returning to a call stub. ! src/share/vm/runtime/sharedRuntime.cpp Changeset: 277edfed6a72 Author: aph Date: 2014-01-10 19:32 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/277edfed6a72 Properly restore frames when deoptimizing. When removing a frame in the deoptimization handler, be sure to restore LR anf FP. Ensure compiled native methods begin with a NOP. Notify simulator of deoptimization blobs. ! src/cpu/aarch64/vm/sharedRuntime_aarch64.cpp ! src/cpu/aarch64/vm/templateInterpreter_aarch64.cpp Changeset: 8bb5f543e43e Author: aph Date: 2014-01-13 10:29 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/8bb5f543e43e Back out 8ccf0e9d5070 ! src/share/vm/runtime/sharedRuntime.cpp Changeset: bac7fbbe3f90 Author: roland Date: 2014-01-08 09:49 +0100 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/bac7fbbe3f90 8029873: compiler/uncommontrap/TestStackBangRbp.java crashes with SIGSEGV Summary: May end up in uncommon trap blob/deopt blob with unguarded stack Reviewed-by: kvn, twisti ! src/share/vm/runtime/deoptimization.cpp ! src/share/vm/runtime/sharedRuntime.cpp + test/compiler/uncommontrap/StackOverflowGuardPagesOff.java Changeset: af35d2f7c14d Author: aph Date: 2014-01-13 11:56 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/af35d2f7c14d Comment change only ! src/share/vm/interpreter/interpreterRuntime.cpp Changeset: 35fe0e6b1e82 Author: aph Date: 2014-01-13 11:56 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/35fe0e6b1e82 Merge Changeset: ed3b90bb3e4c Author: aph Date: 2014-01-16 14:50 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/ed3b90bb3e4c Merge

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hg: aarch64-port/jdk8/hotspot: 3 new changesets
by aph＠redhat.com 16 Jan '14

16 Jan '14

Changeset: f930dd00af0b Author: aph Date: 2014-01-16 09:34 -0500 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/f930dd00af0b Implement handler_for_unsafe_access(). ! src/cpu/aarch64/vm/stubGenerator_aarch64.cpp Changeset: f003157aba15 Author: aph Date: 2014-01-16 09:35 -0500 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/f003157aba15 Enable TieredCompilation. ! src/cpu/aarch64/vm/c2_globals_aarch64.hpp Changeset: da3932d96d4d Author: aph Date: 2014-01-16 09:45 -0500 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/da3932d96d4d Merge

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Enable TieredCompilation
by Andrew Haley 16 Jan '14

16 Jan '14

This seems to be the best default. Andrew. # HG changeset patch # User aph # Date 1389882934 18000 # Thu Jan 16 09:35:34 2014 -0500 # Node ID f003157aba15fef05d04bf8b1e30d4c5280b383e # Parent f930dd00af0bd1592cccfd47b1f79b85b3e6d48a Enable TieredCompilation. diff -r f930dd00af0b -r f003157aba15 src/cpu/aarch64/vm/c2_globals_aarch64.hpp --- a/src/cpu/aarch64/vm/c2_globals_aarch64.hpp Thu Jan 16 09:34:49 2014 -0500 +++ b/src/cpu/aarch64/vm/c2_globals_aarch64.hpp Thu Jan 16 09:35:34 2014 -0500 @@ -46,7 +46,7 @@ #else define_pd_global(bool, ProfileInterpreter, true); #endif // CC_INTERP -define_pd_global(bool, TieredCompilation, false); +define_pd_global(bool, TieredCompilation, trueInTiered); define_pd_global(intx, CompileThreshold, 10000); define_pd_global(intx, BackEdgeThreshold, 100000);

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hg: aarch64-port/jdk8/hotspot: modified make files so they respond to JDK_MINOR_VERSION
by adinn＠redhat.com 15 Jan '14

15 Jan '14

Changeset: d36f681e097d Author: adinn Date: 2014-01-15 18:30 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/d36f681e097d modified make files so they respond to JDK_MINOR_VERSION JDK_MINOR_VERSION is automatically set to 7 by the JDK7 build system and 8 by the JDK8 built system. so we can use it to determine whether to insert -DTARGET_JDK_VERSION=7 into CFLAGS when compiling thehotspot tree. with this modification we can now replace the icedtea7 hotspot hg tree with the jdk8-aarch64 hotspot hg tree and build an x86 version of icedtea7. this is a preliminary step to being able to compile an aarch64 native Java release of JDK7 based on this hybrid tree. n.b. the setting of -DTARGET_JDK_VERSION=7 was moved from aarch64.make into vm.make so as to allow testing the x86 build. it ought to stay there so we can still retest this when we pull in new changes. ! make/linux/makefiles/aarch64.make ! make/linux/makefiles/vm.make

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TestStackBangRbp hangs
by Edward Nevill 13 Jan '14

13 Jan '14

Hi, The following test program causes openjdk to hang indefinitely requiring a kill -9 to stop the process. To replicate - compile the test program javac TestStackBangRbp.java - run it as follows java -Xcomp TestStackBangRbp Note that the problem occurs for both client and server and also occurs on both builtin sim and on the RTSM model. If you add java -Xcomp -XX:+PrintCompilation -XX:+TracePatching TestStackBangRbp the last few lines of the output look like 8291 368 b TestStackBangRbp::<clinit> (86 bytes) Deoptimizing because patch is needed 8302 368 TestStackBangRbp::<clinit> (86 bytes) made not entrant 8303 369 b TestStackBangRbp::main (38 bytes) 8341 370 b TestStackBangRbp::m1 (246 bytes) 8375 371 !b TestStackBangRbp::m2 (35 bytes) Deoptimizing because patch is needed 8463 371 ! TestStackBangRbp::m2 (35 bytes) made not entrant If I then add -XX:-DeoptimizeWhenPatching, IE java -Xcomp -XX:-DeoptimizeWhenPatching TestStackBangRbp The test passes. So it looks like a problem with stack overflow when deoptimizing (or having just deoptimized). Looks like fun:-). Ed. --- TestStackBangRbp.java --- /* * Copyright (c) 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test * @bug 8028308 * @summary rbp not restored when stack overflow is thrown from deopt/uncommon trap blobs * @run main/othervm -XX:-BackgroundCompilation -XX:CompileCommand=dontinline,TestStackBangRbp::m1 -XX:CompileCommand=exclude,TestStackBangRbp::m2 -Xss256K -XX:-UseOnStackReplacement TestStackBangRbp * */ public class TestStackBangRbp { static class UnloadedClass1 { } static class UnloadedClass2 { } static Object m1(boolean deopt) { long l0, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, l14, l15, l16, l17, l18, l19, l20, l21, l22, l23, l24, l25, l26, l27, l28, l29, l30, l31, l32, l33, l34, l35, l36, l37, l38, l39, l40, l41, l42, l43, l44, l45, l46, l47, l48, l49, l50, l51, l52, l53, l54, l55, l56, l57, l58, l59, l60, l61, l62, l63, l64, l65, l66, l67, l68, l69, l70, l71, l72, l73, l74, l75, l76, l77, l78, l79, l80, l81, l82, l83, l84, l85, l86, l87, l88, l89, l90, l91, l92, l93, l94, l95, l96, l97, l98, l99, l100, l101, l102, l103, l104, l105, l106, l107, l108, l109, l110, l111, l112, l113, l114, l115, l116, l117, l118, l119, l120, l121, l122, l123, l124, l125, l126, l127, l128, l129, l130, l131, l132, l133, l134, l135, l136, l137, l138, l139, l140, l141, l142, l143, l144, l145, l146, l147, l148, l149, l150, l151, l152, l153, l154, l155, l156, l157, l158, l159, l160, l161, l162, l163, l164, l165, l166, l167, l168, l169, l170, l171, l172, l173, l174, l175, l176, l177, l178, l179, l180, l181, l182, l183, l184, l185, l186, l187, l188, l189, l190, l191, l192, l193, l194, l195, l196, l197, l198, l199, l200, l201, l202, l203, l204, l205, l206, l207, l208, l209, l210, l211, l212, l213, l214, l215, l216, l217, l218, l219, l220, l221, l222, l223, l224, l225, l226, l227, l228, l229, l230, l231, l232, l233, l234, l235, l236, l237, l238, l239, l240, l241, l242, l243, l244, l245, l246, l247, l248, l249, l250, l251, l252, l253, l254, l255, l256, l257, l258, l259, l260, l261, l262, l263, l264, l265, l266, l267, l268, l269, l270, l271, l272, l273, l274, l275, l276, l277, l278, l279, l280, l281, l282, l283, l284, l285, l286, l287, l288, l289, l290, l291, l292, l293, l294, l295, l296, l297, l298, l299, l300, l301, l302, l303, l304, l305, l306, l307, l308, l309, l310, l311, l312, l313, l314, l315, l316, l317, l318, l319, l320, l321, l322, l323, l324, l325, l326, l327, l328, l329, l330, l331, l332, l333, l334, l335, l336, l337, l338, l339, l340, l341, l342, l343, l344, l345, l346, l347, l348, l349, l350, l351, l352, l353, l354, l355, l356, l357, l358, l359, l360, l361, l362, l363, l364, l365, l366, l367, l368, l369, l370, l371, l372, l373, l374, l375, l376, l377, l378, l379, l380, l381, l382, l383, l384, l385, l386, l387, l388, l389, l390, l391, l392, l393, l394, l395, l396, l397, l398, l399, l400, l401, l402, l403, l404, l405, l406, l407, l408, l409, l410, l411, l412, l413, l414, l415, l416, l417, l418, l419, l420, l421, l422, l423, l424, l425, l426, l427, l428, l429, l430, l431, l432, l433, l434, l435, l436, l437, l438, l439, l440, l441, l442, l443, l444, l445, l446, l447, l448, l449, l450, l451, l452, l453, l454, l455, l456, l457, l458, l459, l460, l461, l462, l463, l464, l465, l466, l467, l468, l469, l470, l471, l472, l473, l474, l475, l476, l477, l478, l479, l480, l481, l482, l483, l484, l485, l486, l487, l488, l489, l490, l491, l492, l493, l494, l495, l496, l497, l498, l499, l500, l501, l502, l503, l504, l505, l506, l507, l508, l509, l510, l511; long ll0, ll1, ll2, ll3, ll4, ll5, ll6, ll7, ll8, ll9, ll10, ll11, ll12, ll13, ll14, ll15, ll16, ll17, ll18, ll19, ll20, ll21, ll22, ll23, ll24, ll25, ll26, ll27, ll28, ll29, ll30, ll31, ll32, ll33, ll34, ll35, ll36, ll37, ll38, ll39, ll40, ll41, ll42, ll43, ll44, ll45, ll46, ll47, ll48, ll49, ll50, ll51, ll52, ll53, ll54, ll55, ll56, ll57, ll58, ll59, ll60, ll61, ll62, ll63, ll64, ll65, ll66, ll67, ll68, ll69, ll70, ll71, ll72, ll73, ll74, ll75, ll76, ll77, ll78, ll79, ll80, ll81, ll82, ll83, ll84, ll85, ll86, ll87, ll88, ll89, ll90, ll91, ll92, ll93, ll94, ll95, ll96, ll97, ll98, ll99, ll100, ll101, ll102, ll103, ll104, ll105, ll106, ll107, ll108, ll109, ll110, ll111, ll112, ll113, ll114, ll115, ll116, ll117, ll118, ll119, ll120, ll121, ll122, ll123, ll124, ll125, ll126, ll127, ll128, ll129, ll130, ll131, ll132, ll133, ll134, ll135, ll136, ll137, ll138, ll139, ll140, ll141, ll142, ll143, ll144, ll145, ll146, ll147, ll148, ll149, ll150, ll151, ll152, ll153, ll154, ll155, ll156, ll157, ll158, ll159, ll160, ll161, ll162, ll163, ll164, ll165, ll166, ll167, ll168, ll169, ll170, ll171, ll172, ll173, ll174, ll175, ll176, ll177, ll178, ll179, ll180, ll181, ll182, ll183, ll184, ll185, ll186, ll187, ll188, ll189, ll190, ll191, ll192, ll193, ll194, ll195, ll196, ll197, ll198, ll199, ll200, ll201, ll202, ll203, ll204, ll205, ll206, ll207, ll208, ll209, ll210, ll211, ll212, ll213, ll214, ll215, ll216, ll217, ll218, ll219, ll220, ll221, ll222, ll223, ll224, ll225, ll226, ll227, ll228, ll229, ll230, ll231, ll232, ll233, ll234, ll235, ll236, ll237, ll238, ll239, ll240, ll241, ll242, ll243, ll244, ll245, ll246, ll247, ll248, ll249, ll250, ll251, ll252, ll253, ll254, ll255, ll256, ll257, ll258, ll259, ll260, ll261, ll262, ll263, ll264, ll265, ll266, ll267, ll268, ll269, ll270, ll271, ll272, ll273, ll274, ll275, ll276, ll277, ll278, ll279, ll280, ll281, ll282, ll283, ll284, ll285, ll286, ll287, ll288, ll289, ll290, ll291, ll292, ll293, ll294, ll295, ll296, ll297, ll298, ll299, ll300, ll301, ll302, ll303, ll304, ll305, ll306, ll307, ll308, ll309, ll310, ll311, ll312, ll313, ll314, ll315, ll316, ll317, ll318, ll319, ll320, ll321, ll322, ll323, ll324, ll325, ll326, ll327, ll328, ll329, ll330, ll331, ll332, ll333, ll334, ll335, ll336, ll337, ll338, ll339, ll340, ll341, ll342, ll343, ll344, ll345, ll346, ll347, ll348, ll349, ll350, ll351, ll352, ll353, ll354, ll355, ll356, ll357, ll358, ll359, ll360, ll361, ll362, ll363, ll364, ll365, ll366, ll367, ll368, ll369, ll370, ll371, ll372, ll373, ll374, ll375, ll376, ll377, ll378, ll379, ll380, ll381, ll382, ll383, ll384, ll385, ll386, ll387, ll388, ll389, ll390, ll391, ll392, ll393, ll394, ll395, ll396, ll397, ll398, ll399, ll400, ll401, ll402, ll403, ll404, ll405, ll406, ll407, ll408, ll409, ll410, ll411, ll412, ll413, ll414, ll415, ll416, ll417, ll418, ll419, ll420, ll421, ll422, ll423, ll424, ll425, ll426, ll427, ll428, ll429, ll430, ll431, ll432, ll433, ll434, ll435, ll436, ll437, ll438, ll439, ll440, ll441, ll442, ll443, ll444, ll445, ll446, ll447, ll448, ll449, ll450, ll451, ll452, ll453, ll454, ll455, ll456, ll457, ll458, ll459, ll460, ll461, ll462, ll463, ll464, ll465, ll466, ll467, ll468, ll469, ll470, ll471, ll472, ll473, ll474, ll475, ll476, ll477, ll478, ll479, ll480, ll481, ll482, ll483, ll484, ll485, ll486, ll487, ll488, ll489, ll490, ll491, ll492, ll493, ll494, ll495, ll496, ll497, ll498, ll499, ll500, ll501, ll502, ll503, ll504, ll505, ll506, ll507, ll508, ll509, ll510, ll511; int i1 = TestStackBangRbp.i1; int i2 = TestStackBangRbp.i2; int i3 = TestStackBangRbp.i3; int i4 = TestStackBangRbp.i4; int i5 = TestStackBangRbp.i5; int i6 = TestStackBangRbp.i6; int i7 = TestStackBangRbp.i7; int i8 = TestStackBangRbp.i8; int i9 = TestStackBangRbp.i9; int i10 = TestStackBangRbp.i10; int i11 = TestStackBangRbp.i11; int i12 = TestStackBangRbp.i12; int i13 = TestStackBangRbp.i13; int i14 = TestStackBangRbp.i14; int i15 = TestStackBangRbp.i15; int i16 = TestStackBangRbp.i16; TestStackBangRbp.i1 = i1; TestStackBangRbp.i2 = i2; TestStackBangRbp.i3 = i3; TestStackBangRbp.i4 = i4; TestStackBangRbp.i5 = i5; TestStackBangRbp.i6 = i6; TestStackBangRbp.i7 = i7; TestStackBangRbp.i8 = i8; TestStackBangRbp.i9 = i9; TestStackBangRbp.i10 = i10; TestStackBangRbp.i11 = i11; TestStackBangRbp.i12 = i12; TestStackBangRbp.i13 = i13; TestStackBangRbp.i14 = i14; TestStackBangRbp.i15 = i15; TestStackBangRbp.i16 = i16; if (deopt) { // deoptimize with integer in rbp UnloadedClass1 res = new UnloadedClass1(); // forces deopt with c2 return res; } return null; } static boolean m2(boolean deopt) { // call m2 recursively until stack overflow. Then call m3 that // will call m1 and trigger and deopt in m1 while keeping a // lot of objects live in registers at the call to m1 long l0, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, l14, l15, l16, l17, l18, l19, l20, l21, l22, l23, l24, l25, l26, l27, l28, l29, l30, l31, l32, l33, l34, l35, l36, l37, l38, l39, l40, l41, l42, l43, l44, l45, l46, l47, l48, l49, l50, l51, l52, l53, l54, l55, l56, l57, l58, l59, l60, l61, l62, l63, l64, l65, l66, l67, l68, l69, l70, l71, l72, l73, l74, l75, l76, l77, l78, l79, l80, l81, l82, l83, l84, l85, l86, l87, l88, l89, l90, l91, l92, l93, l94, l95, l96, l97, l98, l99, l100, l101, l102, l103, l104, l105, l106, l107, l108, l109, l110, l111, l112, l113, l114, l115, l116, l117, l118, l119, l120, l121, l122, l123, l124, l125, l126, l127, l128, l129, l130, l131, l132, l133, l134, l135, l136, l137, l138, l139, l140, l141, l142, l143, l144, l145, l146, l147, l148, l149, l150, l151, l152, l153, l154, l155, l156, l157, l158, l159, l160, l161, l162, l163, l164, l165, l166, l167, l168, l169, l170, l171, l172, l173, l174, l175, l176, l177, l178, l179, l180, l181, l182, l183, l184, l185, l186, l187, l188, l189, l190, l191, l192, l193, l194, l195, l196, l197, l198, l199, l200, l201, l202, l203, l204, l205, l206, l207, l208, l209, l210, l211, l212, l213, l214, l215, l216, l217, l218, l219, l220, l221, l222, l223, l224, l225, l226, l227, l228, l229, l230, l231, l232, l233, l234, l235, l236, l237, l238, l239, l240, l241, l242, l243, l244, l245, l246, l247, l248, l249, l250, l251, l252, l253, l254, l255, l256, l257, l258, l259, l260, l261, l262, l263, l264, l265, l266, l267, l268, l269, l270, l271, l272, l273, l274, l275, l276, l277, l278, l279, l280, l281, l282, l283, l284, l285, l286, l287, l288, l289, l290, l291, l292, l293, l294, l295, l296, l297, l298, l299, l300, l301, l302, l303, l304, l305, l306, l307, l308, l309, l310, l311, l312, l313, l314, l315, l316, l317, l318, l319, l320, l321, l322, l323, l324, l325, l326, l327, l328, l329, l330, l331, l332, l333, l334, l335, l336, l337, l338, l339, l340, l341, l342, l343, l344, l345, l346, l347, l348, l349, l350, l351, l352, l353, l354, l355, l356, l357, l358, l359, l360, l361, l362, l363, l364, l365, l366, l367, l368, l369, l370, l371, l372, l373, l374, l375, l376, l377, l378, l379, l380, l381, l382, l383, l384, l385, l386, l387, l388, l389, l390, l391, l392, l393, l394, l395, l396, l397, l398, l399, l400, l401, l402, l403, l404, l405, l406, l407, l408, l409, l410, l411, l412, l413, l414, l415, l416, l417, l418, l419, l420, l421, l422, l423, l424, l425, l426, l427, l428, l429, l430, l431, l432, l433, l434, l435, l436, l437, l438, l439, l440, l441, l442, l443, l444, l445, l446, l447, l448, l449, l450, l451, l452, l453, l454, l455, l456, l457, l458, l459, l460, l461, l462, l463, l464, l465, l466, l467, l468, l469, l470, l471, l472, l473, l474, l475, l476, l477, l478, l479, l480, l481, l482, l483, l484, l485, l486, l487, l488, l489, l490, l491, l492, l493, l494, l495, l496, l497, l498, l499, l500, l501, l502, l503, l504, l505, l506, l507, l508, l509, l510, l511; boolean do_m3 = false; try { do_m3 = m2(deopt); } catch (StackOverflowError e) { return true; } if (do_m3) { m3(deopt); } return false; } static volatile Object o1 = new Object(); static volatile int i1 = 1; static volatile int i2 = 2; static volatile int i3 = 3; static volatile int i4 = 4; static volatile int i5 = 5; static volatile int i6 = 6; static volatile int i7 = 7; static volatile int i8 = 8; static volatile int i9 = 9; static volatile int i10 = 10; static volatile int i11 = 11; static volatile int i12 = 12; static volatile int i13 = 13; static volatile int i14 = 14; static volatile int i15 = 15; static volatile int i16 = 16; static void m3(boolean deopt) { Object o1 = TestStackBangRbp.o1; TestStackBangRbp.o1 = o1; try { m1(deopt); } catch (StackOverflowError e) { // deoptimize again. rbp holds an integer. It should have an object. UnloadedClass2 res = new UnloadedClass2(); // forces deopt with c2 } TestStackBangRbp.o1 = o1; } static public void main(String[] args) { // get m1 & m3 compiled for (int i = 0; i < 20000; i++) { m1(false); m3(false); } m2(true); System.out.println("TEST PASSED"); } } --- CUT HERE ---

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hg: aarch64-port/jdk8/hotspot: Add support for target JDK 7
by adinn＠redhat.com 10 Jan '14

10 Jan '14

Changeset: c40a7ed7df16 Author: adinn Date: 2014-01-10 11:31 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8/hotspot/rev/c40a7ed7df16 Add support for target JDK 7 add TARGET_JDK_VERSION=7 on the command line to build a version of libjvm.so which will support execution using JDK7 ! make/linux/makefiles/aarch64.make ! make/linux/makefiles/vm.make ! src/share/vm/prims/jvm.cpp ! src/share/vm/prims/jvm.h

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SPECjvm2008 xml.validation fails with -XX:+UseBiasedLocking
by Edward Nevill 08 Jan '14

08 Jan '14

Hi, Setup is as follows. On the RTSM model only. This failure is not repeatable with the builtin sim. /home/ed/images/j2sdk-client-slowdebug/bin/java -version ~/SPECjvm2008$ /home/ed/images/j2sdk-client-slowdebug/bin/java -version openjdk version "1.8.0-internal-debug" OpenJDK Runtime Environment (build 1.8.0-internal-debug-ed_2014_01_07_10_53-b00) OpenJDK 64-Bit Client VM (build 25.0-b59-debug, mixed mode) Command taskset 10 /home/ed/images/j2sdk-client-slowdebug/bin/java -XX:+UseBiasedLocking -jar SPECjvm2008.jar -bt 16 -ikv xml.validation produces the error # Internal Error (/home/ed/work/rc3/jdk8/hotspot/src/share/vm/runtime/synchronizer.cpp:1297), pid=14154, tid=546926752240 # assert(dmw->is_neutral()) failed: invariant The failure does not happen every time, but with taskset 10 and -bt 16 it seems fairly dependable (I have just run it 6 times in a row and it has failed every time). taskset 10 tells it to use a single core (ie. core 5) -bt 16 tells it to run the benchmark as 16 threads. The problem does not seem to occur without the taskset 10, ie. it seems to be running multi threaded single core that provokes it. The problem is more frequent the higher the -bt N value, but making it too high causes out of memory errors. Slowdebug seems to provoke the problem more than fastdebug, although this may just be my perception. All the best, Ed.

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