TweetFollow Us on Twitter

Mar 95 Top 10
Volume Number:11
Issue Number:3
Column Tag:Think Top 10

Think Top 10

This monthly column, written by Symantec’s Technical Support Engineers, aims to provide you with technical information based on the use of Symantec products.

By Michael Hopkins and Craig Conner, Symantec Technical Support

Note: Source code files accompanying article are located on MacTech CD-ROM or source code disks.

This month we’ll cover the PowerPC and Symantec’s C++ Cross Development Kit.

Q: How do I debug my PowerPC application?

A: The Symantec PowerPC Cross Development Kit does not include an integrated source-level debugger. You have three options for debugging.

1) The CDK includes Apple’s two machine PowerPC debugger which allows you to send debugging info from the PowerPC running the application to a non-PowerPC machine connected via the serial port. Although this is a very good debugging environment, it requires an extra machine.

2) An alternative is to use Apple’s single machine debugger, available from Apple as a pre-release version.

3) Perhaps the best alternative is to compile your code under the 68K compiler and thoroughly debug it using the integrated Symantec Debugger. Once your program is debugged, you should be able to recompile it using the PowerPC compiler without modifying the runtime behavior.

Q: I am getting bus errors when I run my PowerPC code. How do I find dangling pointers in my programs?

A: When you create pointer variables, set them to the value (void *)0xDEADBEEF. This is an odd address and you do not need to worry about it being a valid address on Macintosh NuBus cards (the address lives in slot D’s superslot space). Any time you dereference such a pointer before assigning a value to it, you will get either a bus error or an address error. This technique also works for 68K code.

Q: How do I make a fat binary application using the CDK?

A: Build your application with the 68K compiler, and then add your resulting application file to your PowerPC project. When you build the PowerPC app, the environment will copy the 68K resources (including the 68K 'CODE' resources) into the final app along with a 'cfrg' resource and the PPC code (in the data fork).

Q: I am in the process of porting some scientific applications written in C to the PowerPC. I run into all kinds of problems when compiling it with the C++ compiler. Is there a native PPC C translator available for the CDK?

A: Yes, we do have a native C translator available as well as a complement of Standard C Libraries. If you would like to receive a copy, give us a call at (503) 465-8470, send us a message at d0152 on AppleLink, or email us at powermac@bedford.symantec.com. Be sure to include your name and mailing address with your request. Allow 5-10 days for shipping.

Q: I am trying to compile my PPC project and I get a link error "undefined main()". What causes this?

A: The current version of the THINK Project Manager is not capable of hosting a runtime PowerPC environment. You will get this error if you choose Run from the Project menu. Instead, you should compile the project by choosing Bring Up To Date, and then choose Build PowerPC App from the AppleScript menu to build your executable.

Q: I am trying to compile my program using the CDK and the PowerPC C compiler and I am getting the warning: "File <stdio.h>; Line 28; While compiling 'myfile.c' Warning: Warning: The Symantec ANSI libraries require mapcr to be turned off". What should I do?

A: Go into your standard library folder and rebuild those libraries that you are including in your project. The libraries that will most likely need rebuilding are PPCANSI.o and PPC CPlusLib.o.

1) For each library you want to rebuild, find and open the corresponding project file (PPC ANSI.o is PPCANSI.Π, PPC CPlusLib.o is PPCCPlusLib.Π ).

2) Choose Remove Objects to make sure that all of the source files are recompiled.

3) Go to the compiler settings page for both PowerPC C and PowerPC C++ (under Edit, Options, PowerPC C or PowerPC C++ ) and uncheck the Map carriage returns check box.

4) Bring the project up to date.

5) Use the Build PowerPC Lib script to create the library.

Q: I just installed the CDK patch version 7.0.4.1 and when I rebuild the ANSI libraries, I get errors "Undeclared FATANX, FFEXT", and "FX2DEC" in math.c, printf.c, and scanf.c. How do I fix this?

A: There is an error in the fp.h file from the CDK 7.0.4.1 patch which causes these problems. This will be fixed in the next update. To work around it, do the following:

• In the Universal Headers folder, rename fp.h to PowerPCfp.h.

• Create a new file named fp.h in the Universal Headers folder containing the following:

 #pragma once
 #if defined(powerc) || defined(__powerc)
 #include <PowerPCfp.h>
 #else
 #include <SANE.h>
 #endif

Q: I am trying to build PPCTinyEdit.Π with the CDK and I get an error from ToolServer "PPCBuild.out error MarkReleaseObject :: new failed error -108". What is causing this and how can I fix it?

A: An error code of -108 is a system error that indicates that you do not have enough room in your heap zone. Increase your memory partition for ToolServer and the problem should go away.

Special Thanks to Glenn Austin, Mark Baldwin, and Colen Garoutte-Carson.

 
AAPL
$568.24
Apple Inc.
+43.49
MSFT
$39.74
Microsoft Corpora
+0.05
GOOG
$524.60
Google Inc.
-2.34

MacTech Search:
Community Search:

Software Updates via MacUpdate

Ember 1.5.1 - Versatile digital scrapboo...
Ember (formerly LittleSnapper) is your digital scrapbook of things that inspire you: websites, photos, apps or other things. Just drag in images that you want to keep, organize them into relevant... Read more
Cyberduck 4.4.4 - FTP and SFTP browser....
Cyberduck is a robust FTP/FTP-TLS/SFTP browser for the Mac whose lack of visual clutter and cleverly intuitive features make it easy to use. Support for external editors and system technologies such... Read more
TechTool Pro 7.0.3 - Hard drive and syst...
TechTool Pro is now 7, and this is the most advanced version of the acclaimed Macintosh troubleshooting utility created in its 20-year history. Micromat has redeveloped TechTool Pro 7 to be fully 64... Read more
MacFamilyTree 7.1.6 - Create and explore...
MacFamilyTree gives genealogy a facelift: it's modern, interactive, incredibly fast, and easy to use. We're convinced that generations of chroniclers would have loved to trade in their genealogy... Read more
EtreCheck 1.9.9 - For troubleshooting yo...
EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support... Read more
TeamViewer 9.0.28116 - Establish remote...
TeamViewer gives you remote control of any computer or Mac over the Internet within seconds, or can be used for online meetings. Find out why more than 200 million users trust TeamViewer! Free for... Read more
Viber 4.1.0 - Send messages and make cal...
Viber lets you send free messages and make free calls to other Viber users, on any device and network, in any country! Viber syncs your contacts, messages and call history with your mobile device,... Read more
Apple iOS 7.1.1 - The latest version of...
The latest version of iOS can be downloaded through iTunes. Apple iOS 7 brings an all-new design and all-new features. Simplicity Simplicity is often equated with minimalism. Yet true simplicity is... Read more
1Password 4.3 - Powerful password manage...
1Password is a password manager that uniquely brings you both security and convenience. It is the only program that provides anti-phishing protection and goes beyond password management by adding Web... Read more
Lens Blur 1.3.0 - True out-of-focus boke...
Let Lens Blur transform your existing photo into true SLR-quality out-of-focus bokeh effect! Everyone needs a gorgeous personalized background for a social profile, blog, Web/UI design, presentation... Read more

Latest Forum Discussions

See All

Soccer Rally 2 Review
Soccer Rally 2 Review By Carter Dotson on April 24th, 2014 Our Rating: :: GOALKEEPINGUniversal App - Designed for iPhone and iPad Soccer Rally 2 is the most serious vehicular soccer game ever created.   | Read more »
Galaxy Conquerors Review
Galaxy Conquerors Review By Jennifer Allen on April 24th, 2014 Our Rating: :: RETRO SHOOTINGUniversal App - Designed for iPhone and iPad Old school shooting is fun but inaccurate in Galaxy Conquerors.   | Read more »
Yomi Review
Yomi Review By Rob Thomas on April 24th, 2014 Our Rating: :: C-C-C-COMBO BREAKERiPad Only App - Designed for the iPad Round One – Fight! No quarters required for this iOS adaptation of a tabletop adaptation of the arcade fighting... | Read more »
Injustice: Gods Among Us Updated with Ne...
Injustice: Gods Among Us Updated with New Characters, Leaderboards, Gear, and Online Multiplayer Posted by Rob Rich on April 24th, 2014 [ | Read more »
Spin It Review
Spin It Review By Jordan Minor on April 24th, 2014 Our Rating: :: SPIN ME RIGHT ROUNDUniversal App - Designed for iPhone and iPad Spin It has a fine puzzle game model, but its execution lacks energy.   | Read more »
Productivity App NoteSuite is Having its...
Productivity App NoteSuite is Having its Biggest Sale Ever, Just for One Week Posted by Rob Rich on April 24th, 2014 [ permalink ] | Read more »
Wayward Souls Review
Wayward Souls Review By Carter Dotson on April 24th, 2014 Our Rating: :: CARRY ON, WAYWARD SONUniversal App - Designed for iPhone and iPad Wayward Souls is a roguelike-inspired action-RPG that sets a high bar for other games to... | Read more »
The Sandbox Gets Update, Receives New Ca...
The Sandbox Gets Update, Receives New Campaign and New Elements Posted by Tre Lawrence on April 24th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Football Management Simulator One For El...
Football Management Simulator One For Eleven Released Worldwide Today for iOS Posted by Simon Reed on April 24th, 2014 [ permalink ] Free-To-Play football management title One For E | Read more »
Leo’s Fortune Review
Leo’s Fortune Review By Jordan Minor on April 24th, 2014 Our Rating: :: FORTUNATE SONUniversal App - Designed for iPhone and iPad Leo’s Fortune delivers a platforming experience as creative and refined as any console game.   | Read more »

Price Scanner via MacPrices.net

Strong iPhone Sales Drive Apple Record March...
Apple on Wednesday announced financial results for its fiscal 2014 second quarter ended March 29, 2014. The Company posted quarterly revenue of $45.6 billion and quarterly net profit of $10.2 billion... Read more
Award-Winning NoteSuite Productivity App is $...
Minneapolis based Theory.io has announced an 80-Percent Markdown NoteSuite for iPad. NoteSuite helps users stay organized by capturing their notes, to-dos and documents in one organized place.... Read more
16GB 1st generation iPad mini available for $...
Radio Shack has a select number of refurbished 1st generation 16GB WiFi iPad minis available for $199.99 on their online store. Choose free shipping or free ship-to-store. We expect these to sell out... Read more
13-inch 2.5GHz MacBook Pro on sale for $100 o...
B&H Photo has the 13″ 2.5GHz MacBook Pro on sale for $1099 including free shipping plus NY sales tax only. Their price is $100 off MSRP. Read more
iPad Sales “Lull” A Reality Correction Of Unm...
I have lots of time for Jean-Louis Gassée, the former Apple Computer executive (1981 to 1990) who succeeded Steve Jobs as head of Macintosh development when the latter was dismissed in 1985. Mr.... Read more
Apple Makes OS X Betas Available To All – Wit...
Apple’s OS X Beta Seed Program, which lets you install the latest pre-release builds, try it out, and submit your feedback, is now open to anyone who wants to sign on rather than to developers and... Read more
Apple Releases iOS 7.1.1 Update
The latest iOS 7.1.1 update contains improvements, bug fixes and security updates, including: • Further improvements to Touch ID fingerprint recognition • Fixes a bug that could impact keyboard... Read more
Logitech Announces Thinner, Lighter, More Fle...
Logitech has announced an update to its Ultrathin for iPad Air, iPad mini and iPad mini with Retina display, improving the flexibility and design of its award-winning predecessor with an even thinner... Read more
Logitech Introduces Hinge, Big Bang and Turna...
Logitech has announced expansion of its tablet product line with three new cases – the Logitech Hinge, the Logitech Big Bang and the Logitech Turnaround – each for the iPad Air, iPad mini and iPad... Read more
WaterField’s Rough Rider Leather Messenger Ba...
WaterField Designs have announced the new 15-inch size of their popular Rough Rider leather messenger bag, a vintage-looking bag that combines Old West charm and ruggedness with distinctly modern... Read more

Jobs Board

*Apple* Solutions Consultant (ASC) - Apple (...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
*Apple* Solutions Consultant (ASC) - Apple (...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
Position Opening at *Apple* - Apple (United...
…customers purchase our products, you're the one who helps them get more out of their new Apple technology. Your day in the Apple Store is filled with a range of Read more
*Apple* Solutions Consultant (ASC) - Apple (...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
*Apple* Inc. Research Data Specialist - Appl...
…of Worldwide Market Research & Intelligence. The team is responsible for conducting Apple branded consumer market research. It is also responsible for analyzing data Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.