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dbsoft / White-Star

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Building for macOS PowerPC #2

Open barracuda156 opened 5 months ago

barracuda156 commented 5 months ago

@dbsoft Hi, Brian! @wicknix referred me to your discussion on PaleMoon board, and I am interested to join into the project :)

What is the current status of the build?

P. S. There is also a relevant discussion here, which may be worth taking a look: https://github.com/rmottola/Arctic-Fox/issues/140

barracuda156 commented 5 months ago

@wicknix Why would we want G3 at all? Even TFF, which explicitly targeted archaic OS, used G4 or G5. (I also do not think there is any gain or sense in passing cpu value different from the native, as long as binaries are intended to run on the same cpu.)

For one thing, -mcpu=G3 gonna break AltiVec, since G3 does not support it.

dbsoft commented 5 months ago

I think that alignment bug was causing the crash I was having before. This new build with the packing fix... got further:

[54738] ###!!! ABORT: Could not initialize mScreenReferenceDrawTarget: file /Users/nuke/work/palemoon/White-Star/platform/gfx/thebes/gfxPlatform.cpp, line 632

This is more the kind of failure I can work with.

But I think I'll do a rebuild before I sleep tonight with -mcpu=G4 just on the off chance there are issues with the mixing of 32/64bit instructions.

wicknix commented 5 months ago

Even TFF, which explicitly targeted archaic OS, used G4 or G5.

https://github.com/classilla/tenfourfox/blob/master/G3.mozcfg

barracuda156 commented 5 months ago

@wicknix But that is not the config to be used on G4 and G5.

dbsoft commented 5 months ago

iains/darwin-toolchains-start-here#29 (reply in thread) iains/LLVM-7-branch@b9c5258#commitcomment-87572985

I think you are misunderstanding what he is talking about there. So... consider... the Mach-O loader, to support PPC (32bit)... there are various CPU subtypes... G3,G4,G5(running 32bit) .... however for PPC64 there is only G5... so there is no need for a subtype.

Does that make sense? There is no PPC64 G5 subtype because it is the only processor to support it... if you are on Mac running PPC64 it is a G5, end of story.

If you are on Mac running PPC(32) ...it could be one of many processors and thus you need the subtype to know which is which.

barracuda156 commented 5 months ago

iains/darwin-toolchains-start-here#29 (reply in thread) iains/LLVM-7-branch@b9c5258#commitcomment-87572985

I think you are misunderstanding what he is talking about there. So... consider... the Mach-O loader, to support PPC (32bit)... there are various CPU subtypes... G3,G4,G5(running 32bit) .... however for PPC64 there is only G5... so there is no need for a subtype.

Does that make sense? There is no PPC64 G5 subtype because it is the only processor to support it... if you are on Mac running PPC64 it is a G5, end of story.

If you are on Mac running PPC(32) ...it could be one of many processors and thus you need the subtype to know which is which.

I recall Iain saying explicitly elsewhere that when compiling for 64-bit only ppc64 should be used and not ppc970 (FWIW, my memory may fail), but anyway, this is perhaps more of a theoretical question for us at the moment :)

dbsoft commented 5 months ago

I recall Iain saying explicitly elsewhere that when compiling for 64-bit only ppc64 should be used and not ppc970 (FWIW, my memory may fail), but anyway, this is perhaps more of a theoretical question for us at the moment :)

Again, that may be for the same reason I just explained. PPC64 on Darwin is implicitly ppc970 (G5) ... since it is the only processor supported in 64bit mode. the ppc970 would only matter in 32bit mode. Since that is the only mode where CPU variants exist.

barracuda156 commented 5 months ago

Dwarf error is something which feels vaguely familiar, but I can't recall immediately where I saw it.

After getting the same with folly tests now I remembered – it is the old GDB! Need to use gdb-apple from Macports instead of the native OS one.

barracuda156 commented 5 months ago

And now we got something more meaningful with GDB:

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x41800004
0x08744bb0 in MacOSFontEntry::GetFontTable (this=0x41097400, aTag=1851878757) at gfxMacPlatformFontList.mm:513
513                 if(wtable[i] == aTagHE) {
(gdb) where
#0  0x08744bb0 in MacOSFontEntry::GetFontTable (this=0x41097400, aTag=1851878757) at gfxMacPlatformFontList.mm:513
#1  0x086d6678 in gfxFontEntry::AutoTable::AutoTable (this=0xbfffbfec, aFontEntry=0x41097400, aTag=1851878757) at gfxFontEntry.h:234
#2  0x086c9dc8 in gfxFontFamily::ReadOtherFamilyNames (this=0x1f82ca20, aPlatformFontList=0x410a9e00) at gfxFontEntry.cpp:1619
#3  0x0870a724 in gfxPlatformFontList::PreloadNamesList (this=0x410a9e00) at gfxPlatformFontList.cpp:438
#4  0x08746408 in gfxMacPlatformFontList::InitFontListForPlatform (this=0x410a9e00) at gfxMacPlatformFontList.mm:1078
#5  0x08709e74 in gfxPlatformFontList::InitFontList (this=0x410a9e00) at gfxPlatformFontList.cpp:282
#6  0x08657b24 in gfxPlatformMac::CreatePlatformFontList (this=0x1f1e8610) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/gfx/thebes/gfxPlatformMac.cpp:135
#7  0x08652e4c in gfxPlatformFontList::Init () at gfxPlatformFontList.h:102
#8  0x0864b930 in gfxPlatform::Init () at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/gfx/thebes/gfxPlatform.cpp:615
#9  0x0864b064 in gfxPlatform::GetPlatform () at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/gfx/thebes/gfxPlatform.cpp:471
#10 0x0af95090 in CreateVsyncRefreshTimer () at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/layout/base/nsRefreshDriver.cpp:898
#11 0x0af95700 in nsRefreshDriver::ChooseTimer (this=0x186ee000) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/layout/base/nsRefreshDriver.cpp:1023
#12 0x0af965a8 in nsRefreshDriver::EnsureTimerStarted (this=0x186ee000, aFlags=nsRefreshDriver::eNone) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/layout/base/nsRefreshDriver.cpp:1243
#13 0x0af96000 in nsRefreshDriver::MostRecentRefresh (this=0x186ee000) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/layout/base/nsRefreshDriver.cpp:1132
#14 0x0a831dc4 in nsSMILAnimationController::nsSMILAnimationController (this=0x1f1e8100, aDoc=0x186eda00) at nsSMILAnimationController.cpp:41
#15 0x08b336cc in nsDocument::GetAnimationController (this=0x186eda00) at nsDocument.cpp:6590
#16 0x0a4cced4 in mozilla::dom::SVGSVGElement::BindToTree (this=0x1f1e7fc0, aDocument=0x186eda00, aParent=0x1f1d8530, aBindingParent=0x0, aCompileEventHandlers=true) at SVGSVGElement.cpp:726
#17 0x08be249c in nsINode::doInsertChildAt (this=0x1f1d8530, aKid=0x1f1e7fc0, aIndex=5, aNotify=false, aChildArray=@0x1f1d8564) at nsINode.cpp:1664
#18 0x08a36ca0 in mozilla::dom::FragmentOrElement::InsertChildAt (this=0x1f1d8530, aKid=0x1f1e7fc0, aIndex=5, aNotify=false) at FragmentOrElement.cpp:1283
#19 0x0829e684 in nsINode::AppendChildTo (this=0x1f1d8530, aKid=0x1f1e7fc0, aNotify=false) at nsINode.h:751
#20 0x0a96f134 in mozilla::dom::XULDocument::ResumeWalk (this=0x186eda00) at XULDocument.cpp:2770
#21 0x0a971988 in mozilla::dom::XULDocument::OnScriptCompileComplete (this=0x186eda00, aScript=0x1f7910b0, aStatus=NS_OK) at XULDocument.cpp:3445
#22 0x0a98c7d4 in NotifyOffThreadScriptCompletedRunnable::Run (this=0x17c0fbc0) at nsXULElement.cpp:2798
#23 0x071ed6e8 in nsThread::ProcessNextEvent (this=0x179002d0, aMayWait=false, aResult=0xbfffcc00) at nsThread.cpp:1140
#24 0x07268a48 in NS_ProcessPendingEvents (aThread=0x179002d0, aTimeout=10) at nsThreadUtils.cpp:297
warning: .o file "/opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/obj-powerpc-apple-darwin/toolkit/library/../../widget/Unified_cpp_widget1.o" more recent than executable timestamp in "/opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/obj-powerpc-apple-darwin/toolkit/library/XUL"
warning: Couldn't open object file '/opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/obj-powerpc-apple-darwin/toolkit/library/../../widget/Unified_cpp_widget1.o'
#25 0x0ab3af4c in nsBaseAppShell::NativeEventCallback ()
#26 0x0abc5f10 in nsAppShell::ProcessGeckoEvents (aInfo=0x179928e0) at nsAppShell.mm:400
#27 0x006cef58 in __CFRunLoopDoSources0 ()
#28 0x006cdb54 in __CFRunLoopRun ()
#29 0x0065a0b0 in CFRunLoopRunSpecific ()
#30 0x0224c134 in RunCurrentEventLoopInMode ()
#31 0x0224bee8 in ReceiveNextEventCommon ()
#32 0x0224bd54 in BlockUntilNextEventMatchingListInMode ()
#33 0x00d6ec50 in _DPSNextEvent ()
#34 0x00d6e430 in -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] ()
#35 0x0abc4c0c in -[GeckoNSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (self=0x601b390, _cmd=0x142e80c, mask=4294967295, expiration=0x1befb6f0, mode=0x775a94, flag=1 '\001') at nsAppShell.mm:136
#36 0x00d69a88 in -[NSApplication run] ()
#37 0x0abc6c04 in nsAppShell::Run (this=0x179928e0) at nsAppShell.mm:674
#38 0x0b9da814 in nsAppStartup::Run (this=0x17992890) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/toolkit/components/startup/nsAppStartup.cpp:282
#39 0x0ba20968 in XREMain::XRE_mainRun (this=0xbfffef5c) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/toolkit/xre/nsAppRunner.cpp:3811
#40 0x0ba20e88 in XREMain::XRE_main (this=0xbfffef5c, argc=1, argv=0xbffff614, aAppData=0xbffff0ec) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/toolkit/xre/nsAppRunner.cpp:3921
#41 0x0ba211a4 in XRE_main (argc=1, argv=0xbffff614, aAppData=0xbffff0ec, aFlags=0) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/platform/toolkit/xre/nsAppRunner.cpp:4003
#42 0x00002bf4 in do_main (argc=1, argv=0xbffff614, envp=0xbffff61c, xreDirectory=0x60122b0) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/whitestar/app/nsBrowserApp.cpp:253
#43 0x00003038 in main (argc=1, argv=0xbffff614, envp=0xbffff61c) at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/whitestar/app/nsBrowserApp.cpp:377
barracuda156 commented 5 months ago

So something broken here, it seems:

    // See if we already know how long the table is. This saves a potentially
    // expensive call to ATSGetFontTable() to simply get the length.
    // Essentially a hardcoded form of FindTagInTableDir; see below.
    if (MOZ_LIKELY(mFontTableDirSize > 0)) {
        uint32_t aTagHE = aTag;
#ifndef __ppc__
        aTagHE = __builtin_bswap32(aTag);
#endif

#ifdef DEBUG_X
        uint32_t j = 12;
        uint8_t *table = (reinterpret_cast<uint8_t *>(
                mFontTableDir.Elements()));
        fprintf(stderr, "fast fetch ");
#endif
        uint32_t i;
        uint32_t *wtable = (reinterpret_cast<uint32_t *>(
                mFontTableDir.Elements()));

        for (i=3; i<(mFontTableDirSize/4); i+=4) { // Skip header
#ifdef DEBUG_X
                char tag[5] = { table[j], table[j+1], table[j+2], table[j+3],
                        '\0' };
                fprintf(stderr, "%s ", tag); // remember: host endian
                j += 16;
#endif
                // ASSUME THAT aTag is in host endianness
                if(wtable[i] == aTagHE) {
                        dataLength = (ByteCount)wtable[i+3];
#ifndef __ppc__
                        dataLength = __builtin_bswap32(dataLength);
#endif
#ifdef DEBUG_X
                        fprintf(stderr, "FF MATCH: length %u\n", dataLength);
#endif
                        break;
                }
        }
    }

Endianness, ppc-specific hacks :)

barracuda156 commented 5 months ago

I see that chunk comes from TFF: https://github.com/classilla/tenfourfox/blob/656875dfebe724c31896e3073780638e2c213f81/gfx/thebes/gfxMacPlatformFontList.mm#L472-L523

And TFF is known to work fine.

But, do we know this works with 10.5 SDK? And do we know if specific code is compatible with related code in Palemoon?

dbsoft commented 5 months ago

Dwarf error is something which feels vaguely familiar, but I can't recall immediately where I saw it.

After getting the same with folly tests now I remembered – it is the old GDB! Need to use gdb-apple from Macports instead of the native OS one.

Oh I'll give that a try, I was looking for an updated gdb.

So something broken here, it seems:

That is code I imported from TenFourFox with that big endian patch.... obviously all of that code is untested in UXP since I was crashing before I could get to it.

barracuda156 commented 5 months ago

Crash log from the OS:

Process:         whitestar-orig [69695]
Path:            /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/obj-powerpc-apple-darwin/dist/Browser.app/Contents/MacOS/whitestar-orig
Identifier:      org.mozilla.browser
Version:         33.0.0 (3324.1.20)
Code Type:       PPC (Native)
Parent Process:  zsh [69693]

Date/Time:       2024-01-23 06:46:40.850 +0800
OS Version:      Mac OS X 10.6 (10A190)
Report Version:  6

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000004172b004
Crashed Thread:  0

Thread 0 Crashed:
0   XUL                             0x084aabb0 MacOSFontEntry::GetFontTable(unsigned int) + 272 (gfxMacPlatformFontList.mm:513)
1   XUL                             0x0843c674 gfxFontEntry::AutoTable::AutoTable(gfxFontEntry*, unsigned int) + 52
2   XUL                             0x0842fdc4 gfxFontFamily::ReadOtherFamilyNames(gfxPlatformFontList*) + 228 (gfxFontEntry.cpp:1619)
3   XUL                             0x08470720 gfxPlatformFontList::PreloadNamesList() + 224 (gfxPlatformFontList.cpp:438)
4   XUL                             0x084ac404 gfxMacPlatformFontList::InitFontListForPlatform() + 580 (gfxMacPlatformFontList.mm:1078)
5   XUL                             0x0846fe70 gfxPlatformFontList::InitFontList() + 432 (gfxPlatformFontList.cpp:282)
6   XUL                             0x083bdb20 gfxPlatformMac::CreatePlatformFontList() + 64 (gfxPlatformMac.cpp:135)
7   XUL                             0x083b8e48 gfxPlatformFontList::Init() + 40 (gfxPlatformFontList.h:102)
8   XUL                             0x083b192c gfxPlatform::Init() + 1260 (gfxPlatform.cpp:615)
9   XUL                             0x083b1060 gfxPlatform::GetPlatform() + 32 (gfxPlatform.cpp:471)
10  XUL                             0x0acfb08c __ZL23CreateVsyncRefreshTimerv + 76
11  XUL                             0x0acfb6fc nsRefreshDriver::ChooseTimer() const + 252 (nsRefreshDriver.cpp:1023)
12  XUL                             0x0acfc5a4 nsRefreshDriver::EnsureTimerStarted(nsRefreshDriver::EnsureTimerStartedFlags) + 516 (nsRefreshDriver.cpp:1243)
13  XUL                             0x0acfbffc nsRefreshDriver::MostRecentRefresh() const + 28 (nsRefreshDriver.cpp:1132)
14  XUL                             0x0a597dc0 nsSMILAnimationController::nsSMILAnimationController(nsIDocument*) + 320
15  XUL                             0x088996c8 nsDocument::GetAnimationController() + 232 (nsDocument.cpp:6590)
16  XUL                             0x0a232ed0 mozilla::dom::SVGSVGElement::BindToTree(nsIDocument*, nsIContent*, nsIContent*, bool) + 80 (SVGSVGElement.cpp:726)
17  XUL                             0x08948498 nsINode::doInsertChildAt(nsIContent*, unsigned int, bool, nsAttrAndChildArray&) + 728 (nsINode.cpp:1664)
18  XUL                             0x0879cc9c mozilla::dom::FragmentOrElement::InsertChildAt(nsIContent*, unsigned int, bool) + 60 (FragmentOrElement.cpp:1283)
19  XUL                             0x08004680 nsINode::AppendChildTo(nsIContent*, bool) + 96 (nsINode.h:751)
20  XUL                             0x0a6d5130 mozilla::dom::XULDocument::ResumeWalk() + 1328 (XULDocument.cpp:2770)
21  XUL                             0x0a6d7984 mozilla::dom::XULDocument::OnScriptCompileComplete(JSScript*, nsresult) + 868 (XULDocument.cpp:3445)
22  XUL                             0x0a6f27d0 NotifyOffThreadScriptCompletedRunnable::Run() + 784 (nsXULElement.cpp:2798)
23  XUL                             0x06f536e4 nsThread::ProcessNextEvent(bool, bool*) + 1028 (nsThread.cpp:1140)
24  XUL                             0x06fcea44 NS_ProcessPendingEvents(nsIThread*, unsigned int) + 164
25  XUL                             0x0a8a0f48 nsBaseAppShell::NativeEventCallback() + 232
26  XUL                             0x0a92bf0c nsAppShell::ProcessGeckoEvents(void*) + 556 (nsAppShell.mm:400)
27  com.apple.CoreFoundation        0x006cef54 __CFRunLoopDoSources0 + 940
28  com.apple.CoreFoundation        0x006cdb50 __CFRunLoopRun + 940
29  com.apple.CoreFoundation        0x0065a0ac CFRunLoopRunSpecific + 668
30  com.apple.HIToolbox             0x0224c130 RunCurrentEventLoopInMode + 356
31  com.apple.HIToolbox             0x0224bee4 ReceiveNextEventCommon + 376
32  com.apple.HIToolbox             0x0224bd50 BlockUntilNextEventMatchingListInMode + 100
33  com.apple.AppKit                0x00d6ec4c _DPSNextEvent + 1076
34  com.apple.AppKit                0x00d6e42c -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 124
35  XUL                             0x0a92ac08 -[GeckoNSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 136 (nsAppShell.mm:136)
36  com.apple.AppKit                0x00d69a84 -[NSApplication run] + 628
37  XUL                             0x0a92cc00 nsAppShell::Run() + 384 (nsAppShell.mm:674)
38  XUL                             0x0b740810 nsAppStartup::Run() + 112 (nsAppStartup.cpp:282)
39  XUL                             0x0b786964 XREMain::XRE_mainRun() + 4836 (nsAppRunner.cpp:3811)
40  XUL                             0x0b786e84 XREMain::XRE_main(int, char**, nsXREAppData const*) + 1092 (nsAppRunner.cpp:3921)
41  XUL                             0x0b7871a0 XRE_main + 64 (nsAppRunner.cpp:4003)
42  whitestar-orig                  0x00002bf0 __ZL7do_mainiPPcS0_P7nsIFile + 1904
43  whitestar-orig                  0x00003034 main + 180 (nsBrowserApp.cpp:377)
44  whitestar-orig                  0x00002300 start + 64

Thread 1:
0   libSystem.B.dylib               0x00405874 kevent + 8
1   XUL                             0x077133b4 event_base_loop + 756 (event.c:1607)
2   XUL                             0x076d52ec base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) + 428 (message_pump_libevent.cc:374)
3   XUL                             0x076d2740 MessageLoop::RunInternal() + 64 (message_loop.cc:228)
4   XUL                             0x076d26d4 MessageLoop::RunHandler() + 20 (message_loop.cc:221)
5   XUL                             0x076d2684 MessageLoop::Run() + 36 (message_loop.cc:201)
6   XUL                             0x076f2928 base::Thread::ThreadMain() + 296 (thread.cc:179)
7   XUL                             0x076d71b0 __ZL10ThreadFuncPv + 48
8   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 2:
0   libSystem.B.dylib               0x00405878 kevent + 12
1   libSystem.B.dylib               0x0053da38 dispatch_wake_from_pthreads + 256

Thread 3:
0   libSystem.B.dylib               0x00426974 select$DARWIN_EXTSN + 12
1   libnss3.dylib                   0x068145b8 poll + 984
2   libnss3.dylib                   0x0683e3d0 _pr_poll_with_poll + 2384
3   libnss3.dylib                   0x0683e864 PR_Poll + 36
4   XUL                             0x0710bdb0 mozilla::net::nsSocketTransportService::Poll(unsigned int) + 432 (nsSocketTransportService2.cpp:505)
5   XUL                             0x0710e020 mozilla::net::nsSocketTransportService::DoPollIteration() + 768 (nsSocketTransportService2.cpp:1029)
6   XUL                             0x0710d684 mozilla::net::nsSocketTransportService::Run() + 548 (nsSocketTransportService2.cpp:868)
7   XUL                             0x06f536e4 nsThread::ProcessNextEvent(bool, bool*) + 1028 (nsThread.cpp:1140)
8   XUL                             0x06fcec64 NS_ProcessNextEvent(nsIThread*, bool) + 100
9   XUL                             0x07743234 mozilla::ipc::MessagePumpForNonMainThreads::Run(base::MessagePump::Delegate*) + 692 (MessagePump.cpp:337)
10  XUL                             0x076d2740 MessageLoop::RunInternal() + 64 (message_loop.cc:228)
11  XUL                             0x076d26d4 MessageLoop::RunHandler() + 20 (message_loop.cc:221)
12  XUL                             0x076d2684 MessageLoop::Run() + 36 (message_loop.cc:201)
13  XUL                             0x06f51130 nsThread::ThreadFunc(void*) + 432 (nsThread.cpp:458)
14  libnss3.dylib                   0x068431c8 _pt_root + 424
15  libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 4:
0   libSystem.B.dylib               0x003c9e0c __semwait_signal + 8
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   libnss3.dylib                   0x068411a4 pt_TimedWait + 260
3   libnss3.dylib                   0x0684173c PR_WaitCondVar + 284
4   XUL                             0x07dd0f64 Watchdog::Sleep(unsigned int) + 36 (XPCJSContext.cpp:979)
5   XUL                             0x07da6d1c __ZL12WatchdogMainPv + 284
6   libnss3.dylib                   0x068431c8 _pt_root + 424
7   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 5:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x0c37d144 js::ConditionVariable::wait(js::LockGuard<js::Mutex>&) + 68
3   XUL                             0x0c37d2c8 js::ConditionVariable::wait_for(js::LockGuard<js::Mutex>&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator> const&) + 72
4   XUL                             0x0cb9a7a4 js::GlobalHelperThreadState::wait(js::AutoLockHelperThreadState&, js::GlobalHelperThreadState::CondVar, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>) + 68
5   XUL                             0x0cb9f3d4 js::HelperThread::threadLoop() + 564
6   XUL                             0x0cb9cec4 js::HelperThread::ThreadMain(void*) + 36
7   XUL                             0x0cbac6e0 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE8callMainIJLm0EEEEvN7mozilla13IndexSequenceIJXspT_EEEE + 64
8   XUL                             0x0cba9260 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE5StartES2_ + 32
9   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 6:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x0c37d144 js::ConditionVariable::wait(js::LockGuard<js::Mutex>&) + 68
3   XUL                             0x0c37d2c8 js::ConditionVariable::wait_for(js::LockGuard<js::Mutex>&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator> const&) + 72
4   XUL                             0x0cb9a7a4 js::GlobalHelperThreadState::wait(js::AutoLockHelperThreadState&, js::GlobalHelperThreadState::CondVar, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>) + 68
5   XUL                             0x0cb9f3d4 js::HelperThread::threadLoop() + 564
6   XUL                             0x0cb9cec4 js::HelperThread::ThreadMain(void*) + 36
7   XUL                             0x0cbac6e0 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE8callMainIJLm0EEEEvN7mozilla13IndexSequenceIJXspT_EEEE + 64
8   XUL                             0x0cba9260 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE5StartES2_ + 32
9   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 7:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x0c37d144 js::ConditionVariable::wait(js::LockGuard<js::Mutex>&) + 68
3   XUL                             0x0c37d2c8 js::ConditionVariable::wait_for(js::LockGuard<js::Mutex>&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator> const&) + 72
4   XUL                             0x0cb9a7a4 js::GlobalHelperThreadState::wait(js::AutoLockHelperThreadState&, js::GlobalHelperThreadState::CondVar, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>) + 68
5   XUL                             0x0cb9f3d4 js::HelperThread::threadLoop() + 564
6   XUL                             0x0cb9cec4 js::HelperThread::ThreadMain(void*) + 36
7   XUL                             0x0cbac6e0 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE8callMainIJLm0EEEEvN7mozilla13IndexSequenceIJXspT_EEEE + 64
8   XUL                             0x0cba9260 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE5StartES2_ + 32
9   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 8:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x0c37d144 js::ConditionVariable::wait(js::LockGuard<js::Mutex>&) + 68
3   XUL                             0x0c37d2c8 js::ConditionVariable::wait_for(js::LockGuard<js::Mutex>&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator> const&) + 72
4   XUL                             0x0cb9a7a4 js::GlobalHelperThreadState::wait(js::AutoLockHelperThreadState&, js::GlobalHelperThreadState::CondVar, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>) + 68
5   XUL                             0x0cb9f3d4 js::HelperThread::threadLoop() + 564
6   XUL                             0x0cb9cec4 js::HelperThread::ThreadMain(void*) + 36
7   XUL                             0x0cbac6e0 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE8callMainIJLm0EEEEvN7mozilla13IndexSequenceIJXspT_EEEE + 64
8   XUL                             0x0cba9260 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE5StartES2_ + 32
9   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 9:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x0c37d144 js::ConditionVariable::wait(js::LockGuard<js::Mutex>&) + 68
3   XUL                             0x0c37d2c8 js::ConditionVariable::wait_for(js::LockGuard<js::Mutex>&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator> const&) + 72
4   XUL                             0x0cb9a7a4 js::GlobalHelperThreadState::wait(js::AutoLockHelperThreadState&, js::GlobalHelperThreadState::CondVar, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>) + 68
5   XUL                             0x0cb9f3d4 js::HelperThread::threadLoop() + 564
6   XUL                             0x0cb9cec4 js::HelperThread::ThreadMain(void*) + 36
7   XUL                             0x0cbac6e0 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE8callMainIJLm0EEEEvN7mozilla13IndexSequenceIJXspT_EEEE + 64
8   XUL                             0x0cba9260 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE5StartES2_ + 32
9   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 10:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x0c37d144 js::ConditionVariable::wait(js::LockGuard<js::Mutex>&) + 68
3   XUL                             0x0c37d2c8 js::ConditionVariable::wait_for(js::LockGuard<js::Mutex>&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator> const&) + 72
4   XUL                             0x0cb9a7a4 js::GlobalHelperThreadState::wait(js::AutoLockHelperThreadState&, js::GlobalHelperThreadState::CondVar, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>) + 68
5   XUL                             0x0cb9f3d4 js::HelperThread::threadLoop() + 564
6   XUL                             0x0cb9cec4 js::HelperThread::ThreadMain(void*) + 36
7   XUL                             0x0cbac6e0 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE8callMainIJLm0EEEEvN7mozilla13IndexSequenceIJXspT_EEEE + 64
8   XUL                             0x0cba9260 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE5StartES2_ + 32
9   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 11:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x0c37d144 js::ConditionVariable::wait(js::LockGuard<js::Mutex>&) + 68
3   XUL                             0x0c37d2c8 js::ConditionVariable::wait_for(js::LockGuard<js::Mutex>&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator> const&) + 72
4   XUL                             0x0cb9a7a4 js::GlobalHelperThreadState::wait(js::AutoLockHelperThreadState&, js::GlobalHelperThreadState::CondVar, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>) + 68
5   XUL                             0x0cb9f3d4 js::HelperThread::threadLoop() + 564
6   XUL                             0x0cb9cec4 js::HelperThread::ThreadMain(void*) + 36
7   XUL                             0x0cbac6e0 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE8callMainIJLm0EEEEvN7mozilla13IndexSequenceIJXspT_EEEE + 64
8   XUL                             0x0cba9260 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE5StartES2_ + 32
9   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 12:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x0c37d144 js::ConditionVariable::wait(js::LockGuard<js::Mutex>&) + 68
3   XUL                             0x0c37d2c8 js::ConditionVariable::wait_for(js::LockGuard<js::Mutex>&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator> const&) + 72
4   XUL                             0x0cb9a7a4 js::GlobalHelperThreadState::wait(js::AutoLockHelperThreadState&, js::GlobalHelperThreadState::CondVar, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>) + 68
5   XUL                             0x0cb9f3d4 js::HelperThread::threadLoop() + 564
6   XUL                             0x0cb9cec4 js::HelperThread::ThreadMain(void*) + 36
7   XUL                             0x0cbac6e0 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE8callMainIJLm0EEEEvN7mozilla13IndexSequenceIJXspT_EEEE + 64
8   XUL                             0x0cba9260 __ZN2js6detail16ThreadTrampolineIRFvPvEJPNS_12HelperThreadEEE5StartES2_ + 32
9   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 13:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x06f09ab4 mozilla::CondVar::Wait(unsigned int) + 52 (CondVar.h:78)
3   XUL                             0x06f09d04 mozilla::Monitor::Wait(unsigned int) + 36 (Monitor.h:39)
4   XUL                             0x06f09e24 mozilla::MonitorAutoLock::Wait(unsigned int) + 36 (Monitor.h:87)
5   XUL                             0x06f469ec mozilla::HangMonitor::ThreadMain(void*) + 556
6   libnss3.dylib                   0x068431c8 _pt_root + 424
7   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 14:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x06f09ab4 mozilla::CondVar::Wait(unsigned int) + 52 (CondVar.h:78)
3   XUL                             0x06f09d04 mozilla::Monitor::Wait(unsigned int) + 36 (Monitor.h:39)
4   XUL                             0x06f09e24 mozilla::MonitorAutoLock::Wait(unsigned int) + 36 (Monitor.h:87)
5   XUL                             0x06f44814 mozilla::BackgroundHangManager::RunMonitorThread() + 116 (BackgroundHangMonitor.cpp:264)
6   XUL                             0x06f591a0 mozilla::BackgroundHangManager::MonitorThread(void*) + 32 (BackgroundHangMonitor.cpp:60)
7   libnss3.dylib                   0x068431c8 _pt_root + 424
8   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 15:
0   libSystem.B.dylib               0x003c9e0c __semwait_signal + 8
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   libnss3.dylib                   0x068411a4 pt_TimedWait + 260
3   libnss3.dylib                   0x0684173c PR_WaitCondVar + 284
4   XUL                             0x06f09ab4 mozilla::CondVar::Wait(unsigned int) + 52 (CondVar.h:78)
5   XUL                             0x06f09d04 mozilla::Monitor::Wait(unsigned int) + 36 (Monitor.h:39)
6   XUL                             0x06f4cd08 TimerThread::Run() + 1352 (TimerThread.cpp:542)
7   XUL                             0x06f536e4 nsThread::ProcessNextEvent(bool, bool*) + 1028 (nsThread.cpp:1140)
8   XUL                             0x06fcec64 NS_ProcessNextEvent(nsIThread*, bool) + 100
9   XUL                             0x07743234 mozilla::ipc::MessagePumpForNonMainThreads::Run(base::MessagePump::Delegate*) + 692 (MessagePump.cpp:337)
10  XUL                             0x076d2740 MessageLoop::RunInternal() + 64 (message_loop.cc:228)
11  XUL                             0x076d26d4 MessageLoop::RunHandler() + 20 (message_loop.cc:221)
12  XUL                             0x076d2684 MessageLoop::Run() + 36 (message_loop.cc:201)
13  XUL                             0x06f51130 nsThread::ThreadFunc(void*) + 432 (nsThread.cpp:458)
14  libnss3.dylib                   0x068431c8 _pt_root + 424
15  libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 16:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x06f09ab4 mozilla::CondVar::Wait(unsigned int) + 52 (CondVar.h:78)
3   XUL                             0x06f09d04 mozilla::Monitor::Wait(unsigned int) + 36 (Monitor.h:39)
4   XUL                             0x06f09e24 mozilla::MonitorAutoLock::Wait(unsigned int) + 36 (Monitor.h:87)
5   XUL                             0x074b9a40 mozilla::net::CacheIOThread::ThreadFunc() + 928 (CacheIOThread.cpp:469)
6   XUL                             0x074b9668 mozilla::net::CacheIOThread::ThreadFunc(void*) + 104 (CacheIOThread.cpp:398)
7   libnss3.dylib                   0x068431c8 _pt_root + 424
8   libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 17:
0   libSystem.B.dylib               0x0043e9a4 __workq_ops + 12

Thread 18:
0   libSystem.B.dylib               0x003c9e0c __semwait_signal + 8
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   libnss3.dylib                   0x068411a4 pt_TimedWait + 260
3   libnss3.dylib                   0x0684173c PR_WaitCondVar + 284
4   XUL                             0x06f09ab4 mozilla::CondVar::Wait(unsigned int) + 52 (CondVar.h:78)
5   XUL                             0x06f7d184 nsEventQueue::Wait(unsigned int) + 36 (nsEventQueue.h:113)
6   XUL                             0x06f7a948 nsThreadPool::Run() + 936 (nsThreadPool.cpp:216)
7   XUL                             0x06f536e4 nsThread::ProcessNextEvent(bool, bool*) + 1028 (nsThread.cpp:1140)
8   XUL                             0x06fcec64 NS_ProcessNextEvent(nsIThread*, bool) + 100
9   XUL                             0x07743234 mozilla::ipc::MessagePumpForNonMainThreads::Run(base::MessagePump::Delegate*) + 692 (MessagePump.cpp:337)
10  XUL                             0x076d2740 MessageLoop::RunInternal() + 64 (message_loop.cc:228)
11  XUL                             0x076d26d4 MessageLoop::RunHandler() + 20 (message_loop.cc:221)
12  XUL                             0x076d2684 MessageLoop::Run() + 36 (message_loop.cc:201)
13  XUL                             0x06f51130 nsThread::ThreadFunc(void*) + 432 (nsThread.cpp:458)
14  libnss3.dylib                   0x068431c8 _pt_root + 424
15  libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 19:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x06f09ab4 mozilla::CondVar::Wait(unsigned int) + 52 (CondVar.h:78)
3   XUL                             0x06f4e210 nsEventQueue::GetEvent(bool, nsIRunnable**, mozilla::BaseAutoLock<mozilla::Mutex>&) + 112 (nsEventQueue.cpp:56)
4   XUL                             0x06f52268 nsThread::nsChainedEventQueue::GetEvent(bool, nsIRunnable**, mozilla::BaseAutoLock<mozilla::Mutex>&) + 328 (nsThread.cpp:713)
5   XUL                             0x06f532a4 nsThread::GetEvent(bool, nsIRunnable**, mozilla::BaseAutoLock<mozilla::Mutex>&) + 196 (nsThread.cpp:1071)
6   XUL                             0x06f53644 nsThread::ProcessNextEvent(bool, bool*) + 868 (nsThread.cpp:1130)
7   XUL                             0x06fcec64 NS_ProcessNextEvent(nsIThread*, bool) + 100
8   XUL                             0x077433c8 mozilla::ipc::MessagePumpForNonMainThreads::Run(base::MessagePump::Delegate*) + 1096 (MessagePump.cpp:367)
9   XUL                             0x076d2740 MessageLoop::RunInternal() + 64 (message_loop.cc:228)
10  XUL                             0x076d26d4 MessageLoop::RunHandler() + 20 (message_loop.cc:221)
11  XUL                             0x076d2684 MessageLoop::Run() + 36 (message_loop.cc:201)
12  XUL                             0x06f51130 nsThread::ThreadFunc(void*) + 432 (nsThread.cpp:458)
13  libnss3.dylib                   0x068431c8 _pt_root + 424
14  libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 20:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   libSystem.B.dylib               0x004073b0 _pthread_cond_wait + 1524
2   XUL                             0x0a53e9bc mozilla::dom::workers::WorkerPrivate::WaitForWorkerEvents(unsigned int) + 60 (WorkerPrivate.cpp:5260)
3   XUL                             0x0a53d448 mozilla::dom::workers::WorkerPrivate::DoRunLoop(JSContext*) + 296 (WorkerPrivate.cpp:4796)
4   XUL                             0x0a4a07e0 (anonymous namespace)::WorkerThreadPrimaryRunnable::Run() + 512 (RuntimeService.cpp:2814)
5   XUL                             0x06f536e4 nsThread::ProcessNextEvent(bool, bool*) + 1028 (nsThread.cpp:1140)
6   XUL                             0x06fcec64 NS_ProcessNextEvent(nsIThread*, bool) + 100
7   XUL                             0x07743234 mozilla::ipc::MessagePumpForNonMainThreads::Run(base::MessagePump::Delegate*) + 692 (MessagePump.cpp:337)
8   XUL                             0x076d2740 MessageLoop::RunInternal() + 64 (message_loop.cc:228)
9   XUL                             0x076d26d4 MessageLoop::RunHandler() + 20 (message_loop.cc:221)
10  XUL                             0x076d2684 MessageLoop::Run() + 36 (message_loop.cc:201)
11  XUL                             0x06f51130 nsThread::ThreadFunc(void*) + 432 (nsThread.cpp:458)
12  libnss3.dylib                   0x068431c8 _pt_root + 424
13  libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 21:
0   libSystem.B.dylib               0x003c9e10 __semwait_signal + 12
1   XUL                             0x076d0784 ConditionVariable::Wait() + 36 (condition_variable_posix.cc:50)
2   XUL                             0x076f78c8 base::WaitableEvent::TimedWait(base::TimeDelta const&) + 840 (waitable_event_posix.cc:196)
3   XUL                             0x076f7930 base::WaitableEvent::Wait() + 48 (waitable_event_posix.cc:202)
4   XUL                             0x076d3ec0 base::MessagePumpDefault::Run(base::MessagePump::Delegate*) + 576 (message_pump_default.cc:61)
5   XUL                             0x076d2740 MessageLoop::RunInternal() + 64 (message_loop.cc:228)
6   XUL                             0x076d26d4 MessageLoop::RunHandler() + 20 (message_loop.cc:221)
7   XUL                             0x076d2684 MessageLoop::Run() + 36 (message_loop.cc:201)
8   XUL                             0x076f2928 base::Thread::ThreadMain() + 296 (thread.cc:179)
9   XUL                             0x076d71b0 __ZL10ThreadFuncPv + 48
10  libSystem.B.dylib               0x00406060 _pthread_start + 320

Thread 0 crashed with PPC Thread State 32:
  srr0: 0x084aabb0  srr1: 0x0000d930   dar: 0x4172b004 dsisr: 0x40000000
    r0: 0x084aab90    r1: 0xbfffbef0    r2: 0x4172b004    r3: 0x408e06c8
    r4: 0x00000000    r5: 0x033ab440    r6: 0x0000023c    r7: 0x00000001
    r8: 0x1936bab8    r9: 0x408e06c8   r10: 0x1bf03fe0   r11: 0x04391918
   r12: 0x003cddb8   r13: 0x00773664   r14: 0x10004004   r15: 0x7fffffff
   r16: 0x00000001   r17: 0x00780650   r18: 0x0078064e   r19: 0xbfffd14c
   r20: 0x005928e0   r21: 0x0073081c   r22: 0x007801b8   r23: 0x00775a94
   r24: 0x05f09240   r25: 0x05f09248   r26: 0x05f09148   r27: 0x05f09140
   r28: 0x05f09148   r29: 0x1fe8f0b0   r30: 0x1f9e4950   r31: 0x4012e7c0
    cr: 0x84222448   xer: 0x20000000    lr: 0x084aab90   ctr: 0x003cddb8
vrsave: 0x00000000

Binary Images:
    0x1000 -     0x5feb +whitestar-orig ??? (???) <998b46846c82a86a70db120caabeffa4> /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/obj-powerpc-apple-darwin/dist/Browser.app/Contents/MacOS/whitestar-orig
    0xc000 -     0xcfff  com.apple.Cocoa 6.6 (???) <3d310c77126add0d1a36ed96b5790648> /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
   0x10000 -    0x12fff  com.apple.ExceptionHandling 1.5 (10) <6bfa09d393852235d625ed2b8c83fcb1> /System/Library/Frameworks/ExceptionHandling.framework/Versions/A/ExceptionHandling
   0x18000 -    0x1dff7 +libgcc_s.1.1.dylib ??? (???) <e9df52164a9f3356bf03e9a2f259d499> /opt/local/lib/libgcc/libgcc_s.1.1.dylib
   0x20000 -    0x20fff +libgcc_s.1.dylib ??? (???) <52f8e6b93cfbb9fa40f44e2651069377> /opt/local/lib/libgcc/libgcc_s.1.dylib
   0x23000 -    0x25fff +libatomic.1.dylib ??? (???) <b0eb6f0240cac4fa47b52b97f0382169> /opt/local/lib/libgcc/libatomic.1.dylib
   0x29000 -    0x2afff  com.apple.audio.units.AudioUnit 1.6 (1.6) <686082ea0ec42b7f009e99a571ceec81> /System/Library/Frameworks/AudioUnit.framework/Versions/A/AudioUnit
   0x47000 -    0x76fec +libmozglue.dylib ??? (???) <8a3d4119e1e31f8375b8c8808dd4cbc6> /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/obj-powerpc-apple-darwin/dist/Browser.app/Contents/MacOS/libmozglue.dylib
   0x8e000 -    0x93ff6  libmathCommon.A.dylib ??? (???) <e166c8e59a80a82b4504b1dd43d1f50a> /usr/lib/system/libmathCommon.A.dylib
   0x97000 -    0x9cfff +libgcc_ehs.1.1.dylib ??? (???) <09caa332743feca0988e493f2fb3c503> /opt/local/lib/libgcc/libgcc_ehs.1.1.dylib
   0x9f000 -    0xa0ff8  com.apple.ApplicationServices 36 (36) <8d5530987cce48c3375a350c7f134b9c> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
   0xb6000 -    0xc1fff  com.apple.speech.recognition.framework 3.8.2 (3.8.2) <42de060582f36d5185c23e60beb8dab8> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SpeechRecognition.framework/Versions/A/SpeechRecognition
   0xcb000 -    0xcbfff  com.apple.Accelerate 1.4.2 (Accelerate 1.4.2) <e8c929e9ed651c210e5238b66b947e6e> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
   0xd0000 -    0xdefff  libz.1.dylib ??? (???) <c296d00fd65aa7271f3d5592c25c0f96> /usr/lib/libz.1.dylib
   0xe3000 -    0xe4ffa  liblangid.dylib ??? (???) <01ec0f0bdf13f73d8e0334a2e39e75b4> /usr/lib/liblangid.dylib
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0x165cd000 - 0x165ceffc  dns.so ??? (???) <d61372b816f011ea19a6b524c61f14a7> /usr/lib/info/dns.so
0x17376000 - 0x17386ffc +libbrowsercomps.dylib ??? (???) <70fbe9a7098e361feebfc35929655415> /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_www_white-star/white-star/work/White-Star-c293f6082e0b39a55cd66784a4aa4aea7de0bcac/obj-powerpc-apple-darwin/dist/Browser.app/Contents/Resources/browser/components/libbrowsercomps.dylib
0x173a3000 - 0x173b0fff  libCSync.A.dylib ??? (???) <db4005ec21d7c938ca16718df2083ecb> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib
0x17422000 - 0x1742afff  libCGATS.A.dylib ??? (???) <36c52775fc81014246e155e4d5d8a092> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCGATS.A.dylib
0x19387000 - 0x193b9fff  libTrueTypeScaler.dylib ??? (???) <d574414767e9ce7524029fb1ce9091c3> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/Resources/libTrueTypeScaler.dylib
0x1e200000 - 0x1e3e3fff  libType1Scaler.dylib ??? (???) <96283c19a7166c699a257fc8365b0045> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/Resources/libType1Scaler.dylib
0x20000000 - 0x2009efff  edu.mit.Kerberos 6.5.3 (6.5.3) <af8fd279b2ec6f91e99e82352f2541c9> /System/Library/Frameworks/Kerberos.framework/Versions/A/Kerberos
0x64b00000 - 0x64b07fff  com.apple.print.framework.Print 6.0 (230) <f116d72ba9b2107cf79942409f8863d9> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Print.framework/Versions/A/Print
0x8fe00000 - 0x8fe31143  dyld 113.0 (???) <ee555e655e1cf66cac80728801add419> /usr/lib/dyld
0xfa100000 - 0xfa189ffb  com.apple.print.framework.PrintCore 6.0 (276) <049c93926212fa9408e9e56186970e4b> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/PrintCore.framework/Versions/A/PrintCore
0xffff8000 - 0xffff9703  libSystem.B.dylib ??? (???) /usr/lib/libSystem.B.dylib

(P. S. Just in case, it says whitestar-orig in the log, that is because I tried to use a wrapper alike to what legacy-support does to isolate a binary from a wrong libstdc++, but here it does not seem to change anything.)

dbsoft commented 5 months ago

If I can get the debugger you referenced working, I will be able to get some serious work done on this soon.

barracuda156 commented 5 months ago

@dbsoft I think the current version of gdb-apple works on 10.5.8, but just in case, a previous one should be good either: https://github.com/macports/macports-ports/commit/c835964b9b98a2f9e1854fd47130f62f5ea506ec (I still use that one on 10.6, since it lacked some framework which the latest version wanted and I had no time to deal with that).

dbsoft commented 5 months ago

gdb-apple failed to build....

:info:build ./macosx/macosx-nat-dyld.c:2069: error: ▒@XMH_KEXT_BUNDLE▒@Y undeclared (first use in this function)
:info:build ./macosx/macosx-nat-dyld.c:2069: error: (Each undeclared identifier is reported only once
:info:build ./macosx/macosx-nat-dyld.c:2069: error: for each function it appears in.)

Will have to look at it tomorrow.

Edit: Well I just commented out all references to MH_KEXT_BUNDLE in the 3 switches... then it successfully compiled:

GNU gdb 6.3.50.20050815-cvs (Tue Jan 23 02:58:48 UTC 2024)
Copyright 2004 Free Software Foundation, Inc.

Attempting to run the binary gives this:

Unable to find Mach task port for process-id 73273: (os/kern) failure (0x5).

Edit 2: Scratch that I think I got it working, while I got a privilege escalation dialog, it seems to have failed to elevate it... I did "sudo gdb-apple" instead and it seems to be working.

barracuda156 commented 5 months ago

@evanmiller Evan, could you please take a look? We really need this working now.

wicknix commented 5 months ago

do we know this works with 10.5 SDK?

TFF (and InterWebPPC) will not build with the 10.5 SDK. It can be built on 10.5, but it must use the 10.4 SDK.

But that is not the config to be used on G4 and G5.

It will work fine. It just builds a “generic” binary that will run on G3/G4/G5 machines. I’ve built all 3 versions multiple times, and to be honest the G3 version feels more responsive than the “optimized” G4 and G5 builds. The only reason i mentioned it was to see if you’d have better luck with it as it disables altivec and any 64bit code. If you can get the generic G3 version running it might help narrow down any G4/G5 specific issues if there indeed happens to be any.

dbsoft commented 5 months ago

Well gdb-apple is kind of hobbled, it errors out with any commands that control the program: next, step, cont .... however it is giving me enough information to get an idea of what is going on so... probably will be able to make some progress.

barracuda156 commented 5 months ago

@dbsoft Which version did you install? While I have current one installed on 10.5 and 10.6.8, I think I never used it; on 10a190 I have the previous version which I do use, and it seems pretty functional. Having said that, I am a very beginner with GDB and only did some basic stuff.

barracuda156 commented 5 months ago

@wicknix What I meant is whether the specific portion of code is compatible with 10.5 SDK, because for us here it matters, and if TFF hacks are specific to either Tiger or archaic GCC, they must be dropped.

My suggestion is to restrict testing and work to 10.5 mostly (and I can do 10.6 ppc part on my end to supplement that), to the modern GCC (drop 4.8 and even 7.5.0) and to G4/G5. If anything, this minimizes the work a bit, and we got limited resources. It will likely result in a better outcome too, since bugs have been fixed in new GCCs and 10.5 SDK as compared to 10.4.

barracuda156 commented 5 months ago

@dbsoft By the way, there was a discussion about ppc64, may be of interest for us if we consider supporting it: https://github.com/classilla/tenfourfox/issues/655

dbsoft commented 5 months ago

Okay, so the failure is because the MacSurface library requires and will abort if it isn't able to load a few libraries. TenFourFox uses the old "CoreGraphics" back-end... (although the name is a bit of a misnomer, since it isn't the "CoreGraphics.framework" that the MacSurface library uses) So to get things working again I'll probably have to resurrect the old backend.

https://bugzilla.mozilla.org/show_bug.cgi?id=1258751

Also need to put this code back in conditionally so popups/panels still work:

https://bugzilla.mozilla.org/show_bug.cgi?id=1274720

This was removed right before the UXP fork point, so it should be trivial to readd support.

@dbsoft By the way, there was a discussion about ppc64, may be of interest for us if we consider supporting it:

Doesn't seem particularly helpful, I really don't think 64bit mode for this is going to be in my scope. If you want to separately work on it that is great.... I'd love to have. a 64bit version... but too much work for too little reward for me.

@dbsoft Which version did you install? While I have current one installed on 10.5 and 10.6.8,

Whatever MacPorts tried to install, I pasted the version banner it posts when starting up in that earlier comment.

barracuda156 commented 5 months ago

This was removed right before the UXP fork point, so it should be trivial to readd support.

Great that you tracked the problem. Will rebuild once you commit the fix.

I'd love to have. a 64bit version... but too much work for too little reward for me.

This is not in priority list at all. I may try some time, provided we get 32-bit versions actually working first.

Whatever MacPorts tried to install, I pasted the version banner it posts when starting up in that earlier comment.

Ah, it was in edit, so GitHub mobile did not show me it. Got it. Relating to that, I also run GDB under sudo, seems to be required (I never bothered to investigate though).

dbsoft commented 5 months ago

Just wanted to let you know that I had a death in the family, and I may not have time to put into this for a few weeks. I had planned on spending my spare time on it this week, but with the death that will be consumed with funeral arrangements. Will post an update here after I get the changes done.

barracuda156 commented 5 months ago

Just wanted to let you know that I had a death in the family, and I may not have time to put into this for a few weeks. I had planned on spending my spare time on it this week, but with the death that will be consumed with funeral arrangements. Will post an update here after I get the changes done.

Sorry for your loss. Will wait until you are able to get back to this.

dbsoft commented 5 months ago

Created a new branch for the fixes... part 1 removes the structure packing work-around, adds the altivec fix and restores the old 10.5 compatible GFX backend.

https://repo.palemoon.org/dbsoft/UXP/src/branch/macppc-fixes

Getting a null pointer de-reference in the font code which I'll fix in part 2 coming soon.

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000000
gfxFontGroup::AddFamilyToFontList (this=0x1626eca0, aFamily=0x0) at gfxTextRun.cpp:1675
1675          aFamily->FindAllFontsForStyle(mStyle, fontEntryList, needsBold);

https://gist.github.com/dbsoft/fdeb748d99c5ca0a9286080a87e06c23

Edit: Just an observation, after the changes... I landed at the same font crash you did ( which kind of appears to be overrunning the font directory cache buffer). So it looks kind of like PPC 10.6 has what is needed to run the Skia backend.... but not 10.5, it requires the CoreGraphics backend. I do not have 10.6 PPC installed.. so I can't verify that, but if 10.6 has all the frameworks required for the Skia backend it would explain why yours got to the font crash before mine did.

The question is why would TenFourFox/InterWeb not crash with the same code while this does? The only answer I have is different compilers... I am working on putting better checks in. The TenFourFox code is only using one set of limits while there are two... So I am going to check against both limits.

barracuda156 commented 5 months ago

@dbsoft Awesome, thank you for working on this!

kngkeeper commented 4 months ago

@dbsoft how is this going? I'm interested in banging my head against it a bit, and will probably try building it tomorrow. Anything I should know?

My boss used to contribute to Mozilla, and knows a ton about the particular problems and solutions of the Solaris SPARC version of Firefox, so I'll definitely consult him as well if I run into anything I think he'd have insight on.

dbsoft commented 4 months ago

I think I have the font crashes fixed in my local tree but then I hit a crash in the CoreGraphics backend I just restored. I have been spending the week working on getting my relative's estate in order.. and haven't had time to look into the new crash I ran into... won't be able to look into it further until this weekend.

barracuda156 commented 4 months ago

@dbsoft Brian, any update on this?

I am away from my PowerMacs until middle of next week, but once back I am very much interested to follow up with fixing this.

dbsoft commented 3 months ago

@barracuda156 The estate issues basically have been consuming my time, but I am getting back into things this week. Sorry for the delay.

barracuda156 commented 3 months ago

Sounds good.

I am sorting out the build of gcc13 on Leopard now – right now trying to get ppc64 building (that is broken, as of now).

For ppc it should be working already (on my 10.6 ppc it is), but I will make some technical adjustments.

https://github.com/barracuda156/macports-ports/tree/gcc_move https://github.com/barracuda156/macports-base-10A190/tree/gcc-powerpc

gcc-powerpc port has some cherry picked patches from upstream on top of a recent snapshot plus the following:

  1. Initial implementation of IEEE module in gfortran (mostly passing tests, but not reference quality and may have bugs).
  2. Experimental support for libc++.

It is usable now via configure.compiler=macports-gcc-powerpc on command line (assuming you use MacPorts environment). I build it like sudo port -v install gcc-powerpc +G5 +stdlib_flag. It gonna take a while to complete, since it needs: – gcc10bootstrap – cmake-bootstrap – libgcc – gcc But it should get the modern toolchain working.

dbsoft commented 1 month ago

I am a little confused by this crash... the problem is "blur" is valid here:

https://repo.palemoon.org/MoonchildProductions/UXP/src/commit/c1703a69284ca71ef19b21ed1594db0354d7ae05/gfx/thebes/gfxBlur.cpp#L526

(gdb) print &blur $18 = (gfxAlphaBoxBlur *) 0xbfffae50

However once we enter gfxAlphaBoxBlur::DoBlur() "this" now points to invalid data at a different address:

https://repo.palemoon.org/MoonchildProductions/UXP/src/commit/c1703a69284ca71ef19b21ed1594db0354d7ae05/gfx/thebes/gfxBlur.cpp#L128

(gdb) print this $19 = (gfxAlphaBoxBlur * const) 0x17ca93d0

barracuda156 commented 1 month ago

@dbsoft I can’t see the links, at least at the moment: image

Will check again a bit later.

dbsoft commented 1 month ago

There was server maintenance scheduled for this week to address low disk space issues, must be happening today.

https://forum.palemoon.org/viewtopic.php?p=251689#p251689

barracuda156 commented 1 month ago

I am a little confused by this crash... the problem is "blur" is valid here:

https://repo.palemoon.org/MoonchildProductions/UXP/src/commit/c1703a69284ca71ef19b21ed1594db0354d7ae05/gfx/thebes/gfxBlur.cpp#L526

(gdb) print &blur $18 = (gfxAlphaBoxBlur *) 0xbfffae50

However once we enter gfxAlphaBoxBlur::DoBlur() "this" now points to invalid data at a different address:

https://repo.palemoon.org/MoonchildProductions/UXP/src/commit/c1703a69284ca71ef19b21ed1594db0354d7ae05/gfx/thebes/gfxBlur.cpp#L128

(gdb) print this $19 = (gfxAlphaBoxBlur * const) 0x17ca93d0

@dbsoft Perhaps I cannot be helpful with pointing at the error, at least straightaway, but that code was added in https://repo.palemoon.org/MoonchildProductions/UXP/commit/2fae5d3e6ba64821ce3ffeb74ac372d6496f5593#diff-79467c0cbb16a6621bee7f92b856b1711a813e68 – did you try just to revert the commit? From description it does not sound that this is something important and perhaps not even relevant for Darwin anyway.

dbsoft commented 1 month ago

Ah good point, I was thinking maybe it was a compiler bug or something... it could still be, but the variable needed was passed in directly in the original code...so it didn't need to pull it from the class (which is what is failing) it got it from the function parameter.

dbsoft commented 1 month ago

So reverted those commits, but that didn't help it just aborts/crashes at a slightly different place. It is creating a DrawTarget(CG) during the Blur effect which it is allocating... I debug through it as much as possible (it is difficult since the debugger seems to work to break on things and examine variables but stepping over and into is completely broken). Even though the code appears to work, it returns a nullptr... which is stored in a RefPtr ... then a null check is performed. However when if(!refptrvar) is done it does not register as NULL even though the mRawPtr inside is definitely NULL. Going to keep trying things but I am pretty perplexed by what is happening at the moment. Might try with a newer GCC at some point, just building GCC takes so long and I have one that seems to be working so I didn't want to mess with things.

barracuda156 commented 1 month ago

@dbsoft If you consider installing 10a190 build, there is a way to have everything pre-built (I have the latest snapshot of gcc13).

Here is what available at the moment: http://macos-powerpc.org/packages/

dbsoft commented 1 month ago

@barracuda156 I have not really considered it since I planned to target the most mature and stable PowerPC platform I could. An unreleased pre-release OS that officially never saw the light of day is not that. But I guess if it has some development benefits, like the debuggers actually work or something it might be worthwhile and just testing the final product on Leopard.

barracuda156 commented 1 month ago

@dbsoft My point here is not really relative benefits (though I think that for 32-bit ppc 10.6 is better), but a rather pragmatic one: for 10.6 ppc everything is available toolchain-wise (as long as one is willing to use pre-built software, of course).

You could still build for 10.5 SDK, and that will be binary-compatible with 10.5. In fact that is what I did last time with White-Star, since fixing it for 10.6 SDK seems to require substantial effort: I rather do that once we have it working at least on some version of macOS.

dbsoft commented 1 month ago

@barracuda156 These packages require 10.6?

barracuda156 commented 1 month ago

@dbsoft For the most part everything should be buildable on 10.5, with few exceptions, I just do not have them built on 10.5.

barracuda156 commented 1 month ago

@dbsoft The gcc trunk (gcc-15) builds on PowerPC:

gcc15_10 6 8_ppc