From what I've read here and there there is a serious bug in the MorphOS Quake III port by bigfoot making the game crash on G5. I can confirm that it's impossible to play for longer than a couple of minutes.

Would it be possible to fix this problem by compiling a G5 dedicated port? Or is it possible to fix this bug any other way? I hope so, because I'm hooked on the game!

I confirm it is helplessly broken.

Would the problems we are experiencing with the G5 also be an issue with the e5500 cored 64 bit processors used in the X5000 series?

Does this mean that everything that uses the Q3 engine on G5 is DOOMed?

I'd suggest it's not the unique Q3-ness which causes the crashes, but some R300 driver issue (see the OpenJK thread).

Quote:



r300.library: The command buffer overflowed
r300.library: The command buffer overflowed
------------------------------------------------
Quark Thread:
TID 0000000010020010
Name ABox
 Exception 6 <Illegal Alignment Access at 42e5b01d DSISR 40000000>
 SRR0 0x33f720b0 SRR1 0x0200f030
 LR 0x33f720b0 CTR 0x33f72370
 CR 0x2400044a XER 0x20000400
GPR[00] 00000000 28c46870 24e9bf60 00000001 4b215ed9 ffffff9f 2c633790 00000004
GPR[08] 00018694 2c630000 42e5af0c 00000000 33f33e14 001ff21c 001ff250 00000000
GPR[16] fffffdfe 00001984 00000001 00001334 00000000 00000403 00000000 00000000
GPR[24] 42e57354 4b412888 43300000 43300000 80000000 00000001 42e5b019 42e5af01
FPSCR 43efff000015c210
FPR[00] c044000000000000 4065708320000000 4089300000000000 c017800000000000
FPR[04] c044000000000000 4086aa3660000000 4087a80000000000 4089312040000000
FPR[08] 408a300000000000 c049700000000000 4032000000000000 4087aa3660000000
FPR[12] 4086aa3660000000 4085000000000000 0000000000000000 0000000000000000
FPR[16] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR[20] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR[24] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR[28] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
VSAVE 00000000
VSCR 00010001
VPR[00] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[02] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[04] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[06] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[08] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[10] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[12] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[14] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[16] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[18] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[20] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[22] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[24] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[26] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[28] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[30] 00000000000000000000000000000000 00000000000000000000000000000000
IABR 00000000
DABR 00000000
MMCR0 00000000
MMCR1 00000000
MMCR2 00000000
PMC1 00000000 PMC2 00000000 PMC3 00000000 PMC4 00000000
SIA 00000000
SDA 00000000
PPCStackFrame History:
StackFrame[ 0].LR-> Address 0x33f72498 -> Quake III Hunk 1 Offset 0x0008fc78
StackFrame[ 1].LR-> Address 0x33f34c3c -> Quake III Hunk 1 Offset 0x0005241c
StackFrame[ 2].LR-> Address 0x33fe39d0 -> Quake III Hunk 1 Offset 0x001011b0
**************************************************************
**************************************************************
ABox State
Hardware:
Openfirmware..skip for now
ExecBase: SysBase 0x20001948
SysFlags 0x0000 AttnResched 0x0000 IDNestCnt -1 TDNestCnt -1
ThisTask 0x38521ce8 TaskReady 0x20001ae2 TaskWait 0x20010ac8
ResModules 0x20003fe8
TaskTrapCode 0x1011eb80 TaskExceptCode 0x1011eb88 TaskExitCode 0x1011ebe4
TaskSigAlloc 0xffff TaskTrapAlloc 0x8000
IdleCount 1485157
DispCount 10835599
Quantum 4
Elapsed 2
VBlankFrequency 50 PowerSupplyFrequency 50 EClockFrequency 709379
MainTID 0x10020010
SchedulerTID 0x10020012
SchedulerSig 0x80000000
OldSRR0 0x0
ConfigServerTID 0x10000013
LastIntObject 0x20271ffc
LastIntObject 0x20271ffc <Not Valid ptr>
Code 0x202beb60 Data 0x2027a0a8
Int0: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int1: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int2: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int3: iv_Code 0x10124148 iv_Data 0x20003b20 iv_Node 0x00000000
Int4: iv_Code 0x10124148 iv_Data 0x20003b40 iv_Node 0x00000000
Int5: iv_Code 0x10124148 iv_Data 0x20003b30 iv_Node 0x00000000
Interrupt 0x2003bc06 <graphics.library>
Code 0x101810e0 Data 0x2003bbbc
Interrupt 0x20d78d20 <ixemul timer interrupt>
Code 0x20d76080 Data 0x00000000
Int6: iv_Code 0x101810e8 iv_Data 0x2003bbbc iv_Node 0x2003bc32
Int7: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int8: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int9: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int10: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int11: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int12: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int13: iv_Code 0x10124148 iv_Data 0x20003b50 iv_Node 0x00000000
Int14: iv_Code 0x00000000 iv_Data 0x00000000 iv_Node 0x00000000
Int15: iv_Code 0x10124148 iv_Data 0x20003b60 iv_Node 0x00000000
**************************************************************
**************************************************************
**************************************************************
**************************************************************
Running Task
**************************************************************
**************************************************************
Task 0x38521ce8 Name 0x38522dcc <Quake III> Type 13 Pri 0
Flags 0x8 State 2 IDNestCnt -1 TDNestCnt -1
SigAlloc 0xfc00ffff SigWait 0x08000000 SigRecvd 0x30000020 SigExcept 0x00000000
ExceptCode 0x1011eb88 ExceptData 0x00000000 TrapCode 0x1011eb80 TrapData 0x00000000
Switch 0x00000000 Launch 0x00000000 UserData 0x00000000
SPLower 0x38521dcc SPUpper 0x38522dcc SPReg 0x38522d68
MemList 0x377ec240 Entries 0x1
Address 0x317e9420 Size 0x14
MemList 0x32636ac0 Entries 0x1
Address 0x38521ce8 Size 0x10f0
----------------------------------------------------------------------
ETask 0x45e18f64
MemPool 0x2376c470 PPCLibData 0x00000000
PPCSPLower 0x28b4902c PPCSPUpper 0x28c49020
PPCTrapMsgPort 0x00000000 PPCTrapMessage 0x349b827c
PPCRegFrame 0x24e9bb70
Private[] 0x00000000 0x00000000 0x00000000 0x00000000
EmulHandle 0x00000000
----------------------------------------------------------------------
EmulHandle 0x24e9bf60 Type 0x00000004 Flags 0x00000001
SuperHandle 0x10001000 Type 0x00000000 WaitMask 0x00000000 SyncMask 0x00000000
USP 0x00000000 SSP 0x20003780 VBR 0x2000e118
SFC 0x00000000 DFC 0x00000000 CACR 0xa0808000 TC 0x00000000
ITT0 0x00000000 ITT1 0x00000000 DTT0 0x00000000 DTT1 0x00000000
URP 0x00000000 SRP 0x00000000 BUSCR 0x00000000 PCR 0x04310501
----------------------------------------------------------------------
 SRR0 0x33f720b0 SRR1 0x0200f030
 LR 0x33f720b0 CTR 0x33f72370
 CR 0x2400044a XER 0x20000400
GPR[00] 00000000 28c46870 24e9bf60 00000001 4b215ed9 ffffff9f 2c633790 00000004
GPR[08] 00018694 2c630000 42e5af0c 00000000 33f33e14 001ff21c 001ff250 00000000
GPR[16] fffffdfe 00001984 00000001 00001334 00000000 00000403 00000000 00000000
GPR[24] 42e57354 4b412888 43300000 43300000 80000000 00000001 42e5b019 42e5af01
FPSCR 43efff000015c210
FPR[00] c044000000000000 4065708320000000 4089300000000000 c017800000000000
FPR[04] c044000000000000 4086aa3660000000 4087a80000000000 4089312040000000
FPR[08] 408a300000000000 c049700000000000 4032000000000000 4087aa3660000000
FPR[12] 4086aa3660000000 4085000000000000 0000000000000000 0000000000000000
FPR[16] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR[20] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR[24] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR[28] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
VSAVE 00000000
VSCR 00010001
VPR[00] 31303131623000300000d8c01000d990 1000d91000046d50000000000000156c
VPR[02] 11334bb90000000800000001783000d0 100000000001fe041a1a1a1a1b1b1b1b
VPR[04] 1c1c1c1c1d1d1d1d1e1e1e1e1f1f1f1f 1000d97000045ca41e1e1e1e00000002
VPR[06] 33fe39d0349b826011334bc011334bc0 00000001001011b01a1a1a1a1b1b1b1b
VPR[08] 1000d9301d1d1d1d20001b5c11334a98 20003ee000045ca40000000000000000
VPR[10] 10126090000000000000000000000000 1000d97011006b18349b826000000000
VPR[12] 33fe39d01000d9781000d97c20001948 1000d9601000d9780000000000000030
VPR[14] 1000d970000118041000d8d800000000 1000d98000045dc40000000100000000
VPR[16] 1000d9c0000464b02004000413131313 1000d9a0151515151e1e1e1e0000000a
VPR[18] 1000d9b0000118041e1e1e1e0000000a 1000d9c0000118041000d9f000000000
VPR[20] 1000d9d000045dc4000000001000dad0 1000da5000046d500000000178300000
VPR[22] 00000000000000000000000000000000 30003000336236300000000000000000
VPR[24] 00000000000000000000000000000000 113346c4000000000000000000000000
VPR[26] 113334c4000000001a1a1a1a1b1b1b1b 1c1c1c1c1d1d1d1d1a1a1a1a1b1b1b1b
VPR[28] 1c1c1c1c1d1d1d1d1e1e1e1e1f1f1f1f 1000daf000045ca40000000a00000001
VPR[30] 007bc30800abf0080200303000001545 0200f030020030300000000000000000
SRR0 -> Quake III Hunk 1 Offset 0x0008f890
 LR -> Quake III Hunk 1 Offset 0x0008f890
 CTR -> Quake III Hunk 1 Offset 0x0008fb50
PPCStackFrame History:
StackFrame[ 0].LR-> Address 0x33f72498 -> Quake III Hunk 1 Offset 0x0008fc78
StackFrame[ 1].LR-> Address 0x33f34c3c -> Quake III Hunk 1 Offset 0x0005241c
StackFrame[ 2].LR-> Address 0x33fe39d0 -> Quake III Hunk 1 Offset 0x001011b0
Stack: 0x28c46870
0x28c46850[-0x20] 484af694 2c62e1a8 484aed7c 28c46910
0x28c46860[-0x10] 28c46870 003fffff 33fe3964 4841ac00
0x28c46870[0x000] 28c468c0 2c62e1a8 484b145c 4841ac00
0x28c46880[0x010] 00000000 fffffdf3 00000000 fffffdf1
0x2c62e1a8 -> Quake III Hunk 10 Offset 0x0073cd98
Full PPC mode: Last 68k context
 PC 87654321 SR 0000
Dn[0] 0000008c 00004000 00000000 2d418c00 31aadf88 00004000 00000001 28cbdf24
An[0] 4b06dff8 4b4128ac 28c3fcc0 00000000 34c23578 28c47b48 20001948 38522dc8
Stack: 0x38522dc8
0x38522da8[-0x20] 00000000 00000000 00000000 00000000
0x38522db8[-0x10] 00000000 00000000 00000000 11337e58
0x38522dc8[0x000] 00001000 5175616b 65204949 49000000
0x38522dd8[0x010] 38521ce0 00000009 3261df38 3261def0
0x38522de8[0x020] 38522dd8 000000aa 369d7798 2c739780
0x38522df8[0x030] 0000009c 00000000 00000000 38522e18
0x38522e08[0x040] ffff0004 2c739790 00000000 00000000
0x38522e18[0x050] 33bb6838 39274358 003f0104 00000007
0x38522e28[0x060] 243079f8 38522e00 2c7397a0 00000027
0x38522e38[0x070] 00020005 22558720 240d4730 00000000
Last saved PPCThread State:
 SRR0 0x33f2b77c SRR1 0x0200f030
 LR 0x33f2c914 CTR 0x00000002
 CR 0x48000288 XER 0x00000400
GPR[00] 7fffe275 28c47d80 24e9bf60 2634be60 2c2ee1f4 2f4c17f4 43300000 000002e4
GPR[08] 43300000 00000297 00000298 00000291 ffffe275 484b2958 2c2ee1f4 00000002
GPR[16] 3e1a0000 2c5d0000 00789152 00000001 007889ef 00000763 00780018 2c5d472c
GPR[24] 2c5d0000 2c5773d4 007889ef 00000763 00000763 2c5773d4 00000763 2c5d472c
FPSCR 43efff000015c210
FPR[00] c0b9670000000000 c0bd8b0000000000 433000007fffe275 4084c56de0000000
FPR[04] 3ff0000000000000 40d6500000000000 40a6500000000000 4330000080000000
FPR[08] 4084c56de0000000 c0dcb74000000000 fff8000000000298 40848c0fc0000000
FPR[12] 4090000000000000 4330000080000000 0000000000000000 0000000000000000
FPR[16] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR[20] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR[24] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR[28] 0000000000000000 0000000000000000 0000000000000000 4330000080000000
VSAVE 00000000
VSCR 00010001
VPR[00] 437f0000433f40000000000000000000 000000ff000000ff000000ff000000ff
VPR[02] 00080008000800080008000800080008 00000010000000100000001000000010
VPR[04] 00ffffff00ffffff00ffffff00ffffff 00000000000000000000000000000000
VPR[06] 00cc00b900b600b700b700b100a700a7 00000000000000000000000000000000
VPR[08] 00000000000000000000000000000000 e619dd22da25da25da25000000000000
VPR[10] 00be00a600a200a300a300a000970097 be41a659a25da35ca35ca05f97689768
VPR[12] 00e700de00db00db00db00de00e200e2 437f0000433f40000000000000000001
VPR[14] ffffffffffffffffffffffffffffffff c0273d75c0273d75c0273d75c0273d75
VPR[16] 00000000000000000000000000000000 00080008000800080008000800080008
VPR[18] 00ff00ff00ff00ff00ff00ff00ff00ff 000102030405060708090a0b0c0d0e0f
VPR[20] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[22] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[24] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[26] 00000000000000000000000000000000 00000000000000000000000000000000
VPR[28] 000000ff000000ff000000ff000000ff 000102030405060708090a0b0c0d0e0f
VPR[30] 00010203000102030001020300010203 00000000000000000000000000000000
SRR0 -> Quake III Hunk 1 Offset 0x00048f5c
 LR -> Quake III Hunk 1 Offset 0x0004a0f4
PPCStackFrame History:
----------------------------------------------------------------------
SegList 0x0c5fa508 GlobVec 0x20030cfc
StackBase 0x0e148773 StackSize 0x00001000
TaskNum 0x00000000 Result2 0x00000000
CurrentDir 0x0c5ca730 CIS 0x00000000
COS 0x00000000 CES 0x00000000
ConsoleTask 0x39f8c870 FileSystemTask 0x20060594
CLI 0x00000000 ReturnAddr 0x38522dc8
PktWait 0x00000000 WindowPtr 0x00000000
HomeDir 0x09d9ec40 Flags 0x00000000
ExitCode 0x00000000 ExitData 0x00000000
Arguments 0x00000000 ShellPrivate 0x00000000
**************************************************************
*******************

The original Quake 3 source code contains a bunch of code that does misaligned FPU load/stores. Normally this "only" causes performance degradation, but for some reason the MorphOS alignment exception handler doesn't seem to cover all cases for G5 CPUs.

I did actually fix all the misaligned accesses I found when originally developing the port on a G4 machine, but clearly I missed at least one.

If I can squeeze it into my already overly crowded MorphOS 3.6 todo list, I'll fix the exception handler. If I don't get time to do that, I'll probably release an updated version of Quake 3 with this particular misalignment fixed.

Is this related to the QVM code?

Quote:

If I remember right, the alignment issues I fixed were in the bot code, but whether or not this new alignment problem is also in the bot code still remains to be seen.

Quote:

Are there any countries yet where we can legally clone you?

Considering Mark and Frank's rate of contribution, how do you know they are not clones?

> Considering Mark and Frank's rate of contribution, how do you know they are not clones?

See for yourself:

http://blog.a-eon.biz/blog/wp-content/uploads/2013/12/Frank_Mark_Mat.jpg

;-)

Asymmetrical clones?
Nay.
Why do all the developers look SO young.
I can understand Peru, Harry IS young.
But I know Frank's been around awhile, so WTF?

> I can understand Peru, Harry IS young. But I know Frank's been around awhile, so WTF?

I don't know the age of any of them, but Piru's first software uploaded to Aminet is less than 2 years younger than pega-1's (03/1996 vs. 07/1994), so I'm not sure if judging by the time they've "been around" would lead to any valid conclusions regarding their age or any significant difference in age.

I did write amiga sw well before having access to internet.

I don't care how old the developers are, as long as they live forever

B.I. - before internet

Back when long distance phone service was expensive, I had an acoustical coupled modem, and a Compuserve account.

OK Piru, I appologize.

So, it's confirmed that the alignment exceptions are indeed still happening in the bot code. I've also identified the issue that causes the alignment exception handler to fail on the G5, and tomorrow I'll know if my fix works ;)

@bigfoot

GREAT! I can't wait to try it out. This is probably my favourite past time game right now but a G5 is way better then a weak Ibook

How do exceptions work on MorphOS? What kind of functions does GDB need if it were to be ported to MorphOS?

[ Edited by ausPPC 22.05.2014 - 07:44 ]

Quote:

Forgive me if I break out the old fanboy dancing banana!

Bryan_Banana_Dance.gif

@ausPPC

If you grep for "exception" into the includes and the exec autodoc (there is even an amigaguide version), you will find interesting stuff related to NewSetTaskAttrsA(). More specifically, check TASKINFOTYPE_TRAPMSGPORT. Exception handling is asynchronous.

Hey guys, guess what? I just tried Quake 3 again now that I have MorphOS 3.6 installed and it works without freezing! When I last tried on 3.4 it was broken, but it seems to just work on 3.6!

G5 2.0Ghz
Radeon 9800 Pro

I just played two different multiplayer matches with a 30 frag limit and finished both without a hiccup! before it would crash within about 30 seconds or less.

I'm going to play this a little more tonight, but it looks like the issue is gone! Sweet!

Well, I did tell you I'd fix it :P

Sometime all of us MOS users should play a few rounds. :)