RESOLVED FIXED74005
[SH4] Unaligned data access in YARR_JIT 
https://bugs.webkit.org/show_bug.cgi?id=74005
Summary [SH4] Unaligned data access in YARR_JIT
thouraya
Reported 2011-12-07 09:32:06 PST
Hi, In the function generatePatternCharacterOnce, there is a case when a word is loaded from the input string, but this data access is not aligned. Regards, Thouraya.
Attachments
patch to fix the issue (8.69 KB, patch)
2011-12-07 09:37 PST, thouraya 		no flags
DetailsFormatted DiffDiff
patch to fix the issue (11.31 KB, patch)
2011-12-07 09:59 PST, thouraya 		barraclough: review-
DetailsFormatted DiffDiff
fix issue (11.17 KB, patch)
2011-12-08 00:18 PST, thouraya 		no flags
DetailsFormatted DiffDiff
Show Obsolete (2) View All Add attachment proposed patch, testcase, etc.
thouraya
Comment 1 2011-12-07 09:37:27 PST
Created attachment 118219 [details] patch to fix the issue
WebKit Review Bot
Comment 2 2011-12-07 09:39:11 PST
Attachment 118219 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source..." exit_code: 1 Source/JavaScriptCore/assembler/MacroAssemblerSH4.h:174: Missing space before ( in if( [whitespace/parens] [5] Total errors found: 1 in 7 files If any of these errors are false positives, please file a bug against check-webkit-style.
thouraya
Comment 3 2011-12-07 09:59:01 PST
Created attachment 118224 [details] patch to fix the issue
Gavin Barraclough
Comment 4 2011-12-07 22:01:40 PST
Comment on attachment 118224 [details] patch to fix the issue 'WithUnalignedHalfBytes' doesn't really make a lot of sense - it's not misaligned to half a byte! Since there is only one misalignment of a 16 bit access, I think we should name this method load16Unaligned.
thouraya
Comment 5 2011-12-08 00:18:40 PST
Created attachment 118343 [details] fix issue
WebKit Review Bot
Comment 6 2011-12-08 15:17:10 PST
Comment on attachment 118343 [details] fix issue Clearing flags on attachment: 118343 Committed r102389: <http://trac.webkit.org/changeset/102389>
WebKit Review Bot
Comment 7 2011-12-08 15:17:14 PST
All reviewed patches have been landed. Closing bug.
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