Bug 124492 – [MIPS] Offlineasm failures.

• Status: RESOLVED
• Resolution: FIXED
• Component: JavaScriptCore

[Balazs Kilvady]

Following errors appeared on the current master:
/tmp/ccbjRHBi.s:817: Error: opcode not supported on this processor: mips2 (mips2) `movz $v1,$t8,$t7'
/tmp/ccbjRHBi.s:881: Error: opcode not supported on this processor: mips2 (mips2) `movn $v0,$t7,$t8'

[Balazs Kilvady]

Sorry, flash alarm. Only problem with the config of our buildbot.

[Dmitry Shachnev]

This still happens when building QtWebKit 5.2 (based on WebKit 538.1) on Debian GNU/Linux:

g++ -c -Wall -Wextra -Wreturn-type -fno-strict-aliasing -Wchar-subscripts -Wformat-security -Wreturn-type -Wno-unused-parameter -Wno-sign-compare -Wno-switch -Wno-switch-enum -Wundef -Wmissing-noreturn -Winit-self -g -O2 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -fno-stack-protector -Wno-c++0x-compat -O3 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -std=c++0x -pthread -fno-exceptions -D_REENTRANT -MD -DQT_NO_XKB -DBUILDING_QT__=1 -DNDEBUG -DENABLE_3D_RENDERING=1 -DENABLE_BLOB=1 -DENABLE_CANVAS_PATH=1 -DENABLE_CHANNEL_MESSAGING=1 -DENABLE_CSS_BOX_DECORATION_BREAK=1 -DENABLE_CSS_COMPOSITING=1 -DENABLE_CSS_EXCLUSIONS=1 -DENABLE_CSS_FILTERS=1 -DENABLE_CSS_IMAGE_SET=1 -DENABLE_CSS_REGIONS=1 -DENABLE_CSS_SHAPES=1 -DENABLE_CSS_STICKY_POSITION=1 -DENABLE_CSS_TRANSFORMS_ANIMATIONS_UNPREFIXED=1 -DENABLE_DATALIST_ELEMENT=1 -DENABLE_DETAILS_ELEMENT=1 -DENABLE_FAST_MOBILE_SCROLLING=1 -DENABLE_FILTERS=1 -DENABLE_FTPDIR=1 -DENABLE_FULLSCREEN_API=1 -DENABLE_GESTURE_EVENTS=1 -DENABLE_ICONDATABASE=1 -DENABLE_IFRAME_SEAMLESS=1 -DENABLE_INPUT_TYPE_COLOR=1 -DENABLE_INSPECTOR=1 -DENABLE_INSPECTOR_SERVER=1 -DENABLE_JAVASCRIPT_DEBUGGER=1 -DENABLE_LEGACY_NOTIFICATIONS=1 -DENABLE_LEGACY_VIEWPORT_ADAPTION=1 -DENABLE_LEGACY_VENDOR_PREFIXES=1 -DENABLE_LEGACY_WEB_AUDIO=1 -DENABLE_LINK_PREFETCH=1 -DENABLE_METER_ELEMENT=1 -DENABLE_MHTML=1 -DENABLE_NOTIFICATIONS=1 -DENABLE_PAGE_VISIBILITY_API=1 -DENABLE_PROGRESS_ELEMENT=1 -DENABLE_RESOLUTION_MEDIA_QUERY=1 -DENABLE_REQUEST_ANIMATION_FRAME=1 -DENABLE_SHARED_WORKERS=1 -DENABLE_SMOOTH_SCROLLING=1 -DENABLE_SQL_DATABASE=1 -DENABLE_SUBPIXEL_LAYOUT=1 -DENABLE_SVG=1 -DENABLE_SVG_FONTS=1 -DENABLE_TOUCH_ADJUSTMENT=1 -DENABLE_TOUCH_EVENTS=1 -DENABLE_VIEW_MODE_CSS_MEDIA=1 -DENABLE_WEB_SOCKETS=1 -DENABLE_WEB_TIMING=1 -DENABLE_WORKERS=1 -DENABLE_XHR_TIMEOUT=1 -DWTF_USE_TILED_BACKING_STORE=1 -DWTF_USE_CROSS_PLATFORM_CONTEXT_MENUS=1 -DHAVE_QTQUICK=1 -DHAVE_QTPRINTSUPPORT=1 -DHAVE_QSTYLE=1 -DHAVE_QTTESTLIB=1 -DWTF_USE_LIBXML2=1 -DENABLE_XSLT=1 -DWTF_USE_ZLIB=1 -DWTF_USE_WEBP=1 -DWTF_USE_LIBJPEG=1 -DWTF_USE_LIBPNG=1 -DHAVE_XCOMPOSITE=1 -DHAVE_XRENDER=1 -DHAVE_GLX=1 -DHAVE_FONTCONFIG=1 -DENABLE_NETSCAPE_PLUGIN_API=1 -DWTF_USE_PLUGIN_BACKEND_XLIB=1 -DPLUGIN_ARCHITECTURE_X11=1 -DENABLE_PLUGIN_PROCESS=1 -DWTF_USE_3D_GRAPHICS=1 -DENABLE_WEBGL=1 -DENABLE_CSS_SHADERS=1 -DENABLE_VIDEO=1 -DWTF_USE_GSTREAMER=1 -DWTF_USE_GSTREAMER010=1 -DWTF_USE_NATIVE_FULLSCREEN_VIDEO=1 -DHAVE_SQLITE3=1 -DENABLE_GAMEPAD=1 -DWTF_USE_GRAPHICS_SURFACE=1 -DWTF_USE_GLX=1 -DENABLE_TOUCH_SLIDER=1 -DWTF_USE_GLIB=1 -DHAVE_QTTESTSUPPORT=1 -DENABLE_ACCELERATED_2D_CANVAS=0 -DENABLE_BATTERY_STATUS=0 -DENABLE_CANVAS_PROXY=0 -DENABLE_CSP_NEXT=0 -DENABLE_CSS_GRID_LAYOUT=0 -DENABLE_CSS_HIERARCHIES=0 -DENABLE_CSS_IMAGE_ORIENTATION=0 -DENABLE_CSS_IMAGE_RESOLUTION=0 -DENABLE_CSS_VARIABLES=0 -DENABLE_CSS3_CONDITIONAL_RULES=0 -DENABLE_CSS3_TEXT=0 -DENABLE_CSS3_TEXT_LINE_BREAK=0 -DENABLE_DASHBOARD_SUPPORT=0 -DENABLE_DATAGRID=0 -DENABLE_DATA_TRANSFER_ITEMS=0 -DENABLE_DEVICE_ORIENTATION=0 -DENABLE_DIRECTORY_UPLOAD=0 -DENABLE_DOWNLOAD_ATTRIBUTE=0 -DENABLE_FILE_SYSTEM=0 -DENABLE_FONT_LOAD_EVENTS=0 -DENABLE_GEOLOCATION=0 -DENABLE_HIGH_DPI_CANVAS=0 -DENABLE_INDEXED_DATABASE=0 -DENABLE_INPUT_SPEECH=0 -DENABLE_INPUT_TYPE_DATE=0 -DENABLE_INPUT_TYPE_DATETIME_INCOMPLETE=0 -DENABLE_INPUT_TYPE_DATETIMELOCAL=0 -DENABLE_INPUT_TYPE_MONTH=0 -DENABLE_INPUT_TYPE_TIME=0 -DENABLE_INPUT_TYPE_WEEK=0 -DENABLE_LEGACY_CSS_VENDOR_PREFIXES=0 -DENABLE_MATHML=0 -DENABLE_MEDIA_SOURCE=0 -DENABLE_MEDIA_STATISTICS=0 -DENABLE_MEDIA_STREAM=0 -DENABLE_MICRODATA=0 -DENABLE_MOUSE_CURSOR_SCALE=0 -DENABLE_NAVIGATOR_CONTENT_UTILS=0 -DENABLE_NETWORK_INFO=0 -DENABLE_NOSNIFF=0 -DENABLE_ORIENTATION_EVENTS=0 -DENABLE_PROXIMITY_EVENTS=0 -DENABLE_QUOTA=0 -DENABLE_RESOURCE_TIMING=0 -DENABLE_SCRIPTED_SPEECH=0 -DENABLE_SECCOMP_FILTERS=0 -DENABLE_SHADOW_DOM=0 -DENABLE_STYLE_SCOPED=0 -DENABLE_TEMPLATE_ELEMENT=0 -DENABLE_TEXT_AUTOSIZING=0 -DENABLE_THREADED_HTML_PARSER=0 -DENABLE_TOUCH_ICON_LOADING=0 -DENABLE_USER_TIMING=0 -DENABLE_VIBRATION=0 -DENABLE_VIDEO_TRACK=0 -DENABLE_WEB_AUDIO=0 -DSTATICALLY_LINKED_WITH_WTF -DBUILDING_JavaScriptCore -DBUILDING_WEBKIT -DQT_ASCII_CAST_WARNINGS -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_CORE_LIB -I/usr/share/qt5/mkspecs/linux-g++ -I. -I. -I../../Source -I../WTF -Iassembler -Ibytecode -Ibytecompiler -Iheap -Idfg -Idebugger -Idisassembler -Iinterpreter -Ijit -Illint -Iparser -Iprofiler -Iruntime -Itools -Iyarr -IAPI -IForwardingHeaders -Igenerated -I../../Source -I/«BUILDDIR»/qtwebkit-opensource-src-5.2.0+dfsg/Source/include -I/usr/include/qt5 -I/usr/include/qt5/QtScript -I../WTF -I/usr/include/glib-2.0 -I/usr/lib/mips-linux-gnu/glib-2.0/include -I/usr/include/qt5/QtCore -I.moc -o .obj/llint/LowLevelInterpreter.o llint/LowLevelInterpreter.cpp
/tmp/ccbkplyb.s: Assembler messages:
/tmp/ccbkplyb.s:34: Warning: no .cprestore pseudo-op used in PIC code
...
/tmp/ccbkplyb.s:581: Warning: no .cprestore pseudo-op used in PIC code
/tmp/ccbkplyb.s:638: Error: opcode not supported on this processor: mips2 (mips2) `movz $v0,$t8,$t7'
/tmp/ccbkplyb.s:652: Warning: no .cprestore pseudo-op used in PIC code
/tmp/ccbkplyb.s:684: Error: opcode not supported on this processor: mips2 (mips2) `movz $v1,$t8,$t7'
/tmp/ccbkplyb.s:690: Error: opcode not supported on this processor: mips2 (mips2) `movz $t2,$t8,$t7'
/tmp/ccbkplyb.s:695: Error: opcode not supported on this processor: mips2 (mips2) `movz $v1,$t7,$t8'
/tmp/ccbkplyb.s:758: Error: opcode not supported on this processor: mips2 (mips2) `movn $v0,$t8,$t7'
/tmp/ccbkplyb.s:772: Warning: no .cprestore pseudo-op used in PIC code
/tmp/ccbkplyb.s:804: Error: opcode not supported on this processor: mips2 (mips2) `movn $v1,$t8,$t7'
/tmp/ccbkplyb.s:810: Error: opcode not supported on this processor: mips2 (mips2) `movn $t2,$t8,$t7'
/tmp/ccbkplyb.s:815: Error: opcode not supported on this processor: mips2 (mips2) `movn $v1,$t7,$t8'
...

The full build log can be found here: https://buildd.debian.org/status/fetch.php?pkg=qtwebkit-opensource-src&arch=mips&ver=5.2.0%2Bdfsg-2&stamp=1388205434

[Balazs Kilvady]

(In reply to comment #2)
> This still happens when building QtWebKit 5.2 (based on WebKit 538.1) on Debian GNU/Linux:
> 
> g++ -c -Wall -Wextra -Wreturn-type -fno-strict-aliasing -Wchar-subscripts -Wformat-security -llint/LowLevelInterpreter.cpp
> /tmp/ccbkplyb.s: Assembler messages:
> /tmp/ccbkplyb.s:34: Warning: no .cprestore pseudo-op used in PIC code
> ...
> /tmp/ccbkplyb.s:581: Warning: no .cprestore pseudo-op used in PIC code
> /tmp/ccbkplyb.s:638: Error: opcode not supported on this processor: mips2 (mips2) `movz $v0,$t8,$t7'
> /tmp/ccbkplyb.s:758: Error: opcode not supported on this processor: mips2 (mips2) `movn $v0,$t8,$t7'

movz and movn instructions are included in MIPS32 specification and we support MIPS32(r1) and MIPS32r2 processors only. So -mips32 or -mips32r2 flag should be added to the command line of the  cross compiler (in qmake.conf).

As Qt port was removed from WebKit trunk, 5.1 was the last supported Qt version on MIPS.