74023 2011-12-07 13:31:22 -0800 Compare and Swap should be enabled on ARMv7 2011-12-07 18:09:49 -0800 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) All All RESOLVED FIXED P2 Normal --- 1 fpizlo webkit-unassigned oldest_to_newest 516874 0 fpizlo 2011-12-07 13:31:22 -0800 And PARALLEL_GC should be enabled, as well. 516875 1 118263 fpizlo 2011-12-07 13:33:38 -0800 Created attachment 118263 the patch 516877 2 118265 fpizlo 2011-12-07 13:35:10 -0800 Created attachment 118265 the patch Removed accidental debug goop in build-jsc. 516917 3 118265 ggaren 2011-12-07 14:23:19 -0800 Comment on attachment 118265 the patch View in context: https://bugs.webkit.org/attachment.cgi?id=118265&action=review > Source/JavaScriptCore/wtf/Atomics.h:140 > + "strex %1, %4, %0\n\t" I think you need to test and branch after strex to see if your strex succeeded, no? http://www.doulos.com/knowhow/arm/Hints_and_Tips/Implementing_Semaphores/ 516926 4 fpizlo 2011-12-07 14:30:59 -0800 (In reply to comment #3) > (From update of attachment 118265 [details]) > View in context: https://bugs.webkit.org/attachment.cgi?id=118265&action=review > > > Source/JavaScriptCore/wtf/Atomics.h:140 > > + "strex %1, %4, %0\n\t" > > I think you need to test and branch after strex to see if your strex succeeded, no? http://www.doulos.com/knowhow/arm/Hints_and_Tips/Implementing_Semaphores/ weakCompareAndSwap returns a boolean that tells you if the strex succeeded. So the inline asm doesn't need to branch. 516989 5 118265 ggaren 2011-12-07 16:35:14 -0800 Comment on attachment 118265 the patch r=me 517063 6 fpizlo 2011-12-07 18:09:40 -0800 Landed in http://trac.webkit.org/changeset/102295 517064 7 118265 fpizlo 2011-12-07 18:09:49 -0800 Comment on attachment 118265 the patch Clearing flags. 118263 2011-12-07 13:33:38 -0800 2011-12-07 13:35:10 -0800 the patch armcas_patch_1.diff text/plain 4579 fpizlo SW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKPT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQotLS0gU291 cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwkocmV2aXNpb24gMTAyMjY5KQorKysgU291cmNl L0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDE3IEBA CisyMDExLTEyLTA3ICBGaWxpcCBQaXpsbyAgPGZwaXpsb0BhcHBsZS5jb20+CisKKyAgICAgICAg Q29tcGFyZSBhbmQgU3dhcCBzaG91bGQgYmUgZW5hYmxlZCBvbiBBUk12NworICAgICAgICBodHRw czovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9NzQwMjMKKworICAgICAgICBSZXZp 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