Squeak-dev July 1998

squeak-dev@lists.squeakfoundation.org

80 participants
111 discussions

Re: Porting troubles
by Jan Bottorff 18 Jul '98

18 Jul '98

At 03:35 PM 7/14/98 +0200, Georg Gollmann wrote: >So...shouldn´t all variables that hold addresses (OOPs) be declared as >unsigned instead of int (or am I barking up the wrong tree) ? Assuming addresses have a bitvalue that matches positive "int" is a real bad move. I can quickly think of a couple of OS's where this will not allways be true. The Enterprise version of Windows NT 4.0 uses a 3 GByte user mode address space, so 1/3 of the addresses are negative int's. Any process shared memory on Win9x I believe will also be above 2 GB. Future porting to 64-bit processors may also be a big issue. I believe Microsoft has said the Intel/HP Merced version of WinNT will use a 32-bit int, but 64-bit pointers. Welcome back to FAR pointers. For maximum portability,the VM really should treat pointers and int's as potentially very different. A comment was made here that Squeak Smalltalk should be easily portable for the next 20 years. My guess is in 20 years we will no longer have 32-bit processors, so how true is this in the context of 64-bit processors? (with 64-bit pointers and some size of int's)? Is there a 64-bit DEC (or are we supposed to say Compaq now) Alpha version of Squeak right now? Jan Bottorff, President Paradigm Matrix, Inc. ___________________________________________________________________ Paradigm Matrix Inc., San Ramon California "video products and development services for Win32 platforms" Internet: Jan Bottorff janb(a)pmatrix.com WWW http://www.pmatrix.com Phone: voice (925) 803-9318 fax (925) 803-9397 PGP: public key <http://www-swiss.ai.mit.edu/~bal/pks-toplev.html> fingerprint 52 CB FF 60 91 25 F9 44 6F 87 23 C9 AB 5D 05 F6 ___________________________________________________________________

1 0

modeling in color
by David Farber 17 Jul '98

17 Jul '98

Peter Coad has added color to objects models in an attempt to up the information density. although i didn't experience an immediate "ah ha!", my interest was sufficiently piqued that i though i'd pass this on to the squeak list. you can find the first in a series of writeups at: http://www.oi.com/coad-letter-archive/51 is anyone working on a modeling tool for squeak? dave -- j. david farber oo architect+mentor numenor labs incorporated in sunny boulder colorado dfarber(a)numenor.com www.numenor.com

3 2

RE: two bugettes in SystemTracer
by Alejandro F. Reimondo 17 Jul '98

17 Jul '98

3) My traced images opens with an error with label: 'Message not understood: cannotReturn:' and walkback: MethodContext(Object)>>doesNotUnderstand: SystemTracer class>>writeClone The method is evaluating the last line "^tracer" writeClone "SystemTracer writeClone" | tracer | tracer _ self new. "Delay shutDown." "part of Smalltalk processShutDownList." tracer doit. " <-- execution in clone resumes after this send" tracer == nil "will be nil in clone, since it is clamped" ifTrue: [Smalltalk processStartUpList]. ^ tracer I have found your (2) bug and my (3) when porting Squeak 2.1 to WinCE. I must run the SystemTracer in the shrinked image, because a load error occurs when loading image from a Win95 image (during relocating objects...? ). Ale. ---------- Desde: Tim Rowledge[SMTP:rowledge@interval.com] Enviado el: Jueves 16 de Julio de 1998 20:25 Para: squeak(a)cs.uiuc.edu Asunto: two bugettes in SystemTracer 1) SystemTracer>initCompactClasses carefully builds an array of classes, then brutally overrides it with whatever is in the image as the compactClasses array. 2) SystemTracer>writeFileHeader tries to set the macFileType of 'self fullName' when it should be 'file fullName' Guess how I found these.... tim -- Strange OpCodes: MBR: Move Bits Randomly Tim Rowledge: rowledge(a)interval.com (w) +1 (650) 842-6110 (w) tim(a)sumeru.stanford.edu (h) <http://sumeru.stanford.edu/tim>

1 0

ARMLinux makefiles available
by Tim Rowledge 17 Jul '98

17 Jul '98

I know many people have been champing at the bit waiting for an ARMLinux version of Squeak - I've had any number of email requests about it. I finally had an opportunity to make the (blissfully small) changes needed to Ian's GNU makefiles and try it out. Seems to work just fine. I've forwarded Ian the changes and doubtless he'll include them sometimein the general release. Anybody truly desperate can email me for copies. tim -- A successful tool is used to do something undreamed of by its author. - Johnson Tim Rowledge: rowledge(a)interval.com (w) +1 (650) 842-6110 (w) tim(a)sumeru.stanford.edu (h) <http://sumeru.stanford.edu/tim>

1 0

two bugettes in SystemTracer
by Tim Rowledge 17 Jul '98

17 Jul '98

1) SystemTracer>initCompactClasses carefully builds an array of classes, then brutally overrides it with whatever is in the image as the compactClasses array. 2) SystemTracer>writeFileHeader tries to set the macFileType of 'self fullName' when it should be 'file fullName' Guess how I found these.... tim -- Strange OpCodes: MBR: Move Bits Randomly Tim Rowledge: rowledge(a)interval.com (w) +1 (650) 842-6110 (w) tim(a)sumeru.stanford.edu (h) <http://sumeru.stanford.edu/tim>

1 0

Re: Porting troubles
by gr＠fuzzy.uba.ar 16 Jul '98

16 Jul '98

Georg Gollmann said: > (gdb) print memory > $22 =3D (unsigned char *) 0xc0151008 "=C0\026\030I\r\"" > (gdb) print endOfMemory > $11 =3D -1068549284 The problem may be in byte ordering, if you are using linux sources, I guess that they assume an Intel byte ordering, wich is different to motorola's, I don'y know where you must change it, but you can look for that place in Mac sources. You may need to change something in the image, also. Ordered Bye Richie++

1 0

FileStreams
by sqrmax＠cvtci.com.ar 15 Jul '98

15 Jul '98

Hi. Why is that file modes are implemented like integers in FileStream and with booleans in StandardFileStream? For instance, #writeShrink sent to a StandardFileStream fails because true doesn't understand bitAnd:. What should be the best fix for this? Andres.

1 0

RE: Proposed tweaks to the Mac OS Squeak VM
by Serg Koren 15 Jul '98

15 Jul '98

I've already did this a while back ;-) See my website: http://www.visualnewt.com/ Serg Koren VisualNewt Software On Tuesday, July 14, 1998 3:31 PM, Stephen C. Gilardi [SMTP:squeegee@concentric.net] wrote: > Dear Squeak List, > > I thought Squeak was cool even before seeing the Morphic worlds. Now I > think it's extremely cool! > > As a long time Mac user, it seemed a shame to me that the Mac OS Squeak VM > wasn't cosmetically pretty as a Mac OS application. > > So, this weekend I set out to add: > > - Icons for Squeak and its image files, and > - An About box for Squeak. > > I also decided to compile it using the latest CodeWarrior environment--CW > Pro 3. > > I accomplished these goals. I also made a couple of tweaks to the full > screen support. I'd be pleased if the Squeak team would consider including > any or all of these changes in a future release of the Mac OS source for > the Squeak VM. > > I'm happy to see that there is now a "minimal" Mac OS source file to assist > in porting. Perhaps this will free the standard Mac OS sources to be > improved a bit to fit in better as a Mac OS application. > > I have uploaded a StuffIt archive containing modified source files, a > CodeWarrior 3 project file, a resource file, a compiled (Fat) VM (including > the object code patch to the PPC interpreter), and a "Read Me" file > detailing the changes to: > > <ftp://users.aol.com//squeegee/squeak.scg.13jul98.sit> > > The "originals" for the modified source files are those distributed at or > before change set number 138. The were current as of 12JUL98. > > If you're running Squeak on a Mac, please give the new VM a try. You may > need to rebuild your desktop to see the icons. I'd be happy to hear what > you think about it. > > I think Squeak and the Squeak effort are great. I'm pleased to propose > these changes to make it a bit prettier on the Mac! > > --Steve > > > -- > Stephen C. Gilardi > SQ Software > >

1 0

Rebel blocks
by sqrmax＠cvtci.com.ar 15 Jul '98

15 Jul '98

Hi. Latest breaking news! I've found a tiny little example! In a workspace, do the following: aBlock _ [4 dontJustStandThereDoSomethingAboutIt] aBlock value "Of course 4 complains, terminate the debugger" aBlock value "This time the block is unable to be re-evaluated" Maybe this is why Squeak tends to behave strangely when you debug, correct something and ask the debugger to restart the whole thing. Andres.

1 0

Re: Re: Rebel block
by sqrmax＠cvtci.com.ar 15 Jul '98

15 Jul '98

Hi. >BlockContexts in Squeak are not reentrant. A block that is executing--or whose >execution is not properly terminated--cannot be evaluated. When a debugger is terminated, who takes care of resetting blocks? Andres.

1 0

← Newer
1
2
3
4
5
6
7
8
...
12
Older →