TweetFollow Us on Twitter

May 95 Top 10
Volume Number:11
Issue Number:5
Column Tag:Symantec Top 10

Symantec 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 Colen Garoutte-Carson, Quality Assurance & Technical Support, Symantec Corp.

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

Q: How do I build a fat application with Symantec C++ v8.0?

A: We’ve touched on this before, and here’s a more detailed look. When an application is launched on a 68K Macintosh, the operating system (OS) loads and executes a 68K ‘CODE’ resource ID 1. When an application is launched on a PowerMac, the OS first looks for a ‘cfrg’ resource describing a PowerPC code fragment stored in the application’s data fork, and if found, prepares and executes the PowerPC code fragment. If the OS is unable to launch the application this way, it tries to loads and execute a 68K ‘CODE’ resource ID 1.

A fat (fat-binary) application has both a PowerPC code fragment and 68K ‘CODE’ resources, and can be launched on either platform.

To create a fat binary app, enable the option to merge an existing 680x0 application into your final application, in the project Options dialog, in the Project Type settings for an application. This copies all resources from the 68K application that do not already exist in your PowerPC application. Most importantly, this copies all 68K ‘CODE’ resources to your PowerPC application.

Resources in your 68K application with the same type and ID as those in your PowerPC application will not be copied.

You can also build a fat application by including a 68K application’s ‘CODE’ resources in a resource (.rsrc) file, and adding that resource file to your PowerPC project.

Q: How do I create an accelerated code resource?

A: Although the linker in Symantec C++ v8.0 does not yet support the creation of code resources, there is a way to create a code resource from a PowerPC application using Symantec Rez. Symantec C++ v8.0 includes a Code Resource project model which does this.

The Code Resource project model consists of two projects. The first, Code Resource.Π, is similar to a Mac Application project, but doesn’t include InitToolbox() (it’s unnecessary in a code resource). It uses the rsrcMPWPPCRuntime.o runtime library instead of PPCRuntime.o, and PPCLink & MakePEF instead of the internal linker.

In PowerMac applications, constructors and destructors for global and static objects are called automatically by __cplusstart(), which the linker assigns as the main entry point to your application (not main()). This routine calls your constructors, initializes your QuickDraw globals, calls your main() function, and then calls your destructors.

In a shared library, constructors for global and static objects are called by __cplusinit, which the linker assigns as an initialization routine. The Code Fragment Manager will automatically call this initialization routine when your shared library is loaded. The __cplusinit() routine will also hook your shared library’s QuickDraw globals into the QuickDraw globals of the calling application. Destructors for global and static objects are called by __cplusterm(), which the linker assigns as a termination routine. The Code Fragment Manager will automatically call this termination routine when your shared library is unloaded.

In code resources, there is no way to automatically call constructors or destructors for global and static objects, or hook QuickDraw globals, and still preserve the arguments passed to main(). Instead, you must call routines to do this for you. In C, you use __rsrcinit() and __rsrcterm(), declared in stdlib.h. In C++, you use __cplusrsrcinit() and __cplusrsrcterm(), declared in new.h. The C++ initialization and termination routines call the C initialization and termination routines. Use only the C++ or C initialization routines. Do not use both. These routines are defined in the rsrcMPWPPCRuntime.o library.

If your code resource is called only once to perform its function, call __rsrcinit() or __cplusrsrcinit() at the start of your program, and __rsrcterm() or __cplusrsrcterm() at the end.

If your code resource is reentrant, call __rsrcinit() or __cplusrsrcinit() only the first time your code resource is called, and __rsrcterm() or __cplusrsrcterm() the last time your code resource is called.

Do not use any QuickDraw globals, or any global or static objects that rely on their constructor, before calling __rsrcinit() or __cplusrsrcinit().

The second project in the Code Resource project model will copy the data fork of the target built by Code Resource.Π into a resource and prepend a routine descriptor to it. Code Resource.Π is included as a sub-project to the second project. Debugging is disabled for the sub-project to ensure that the sub-project’s target is built instead of a temporary instant-run PEF when the parent project is brought up to date.

Code Resource.Π includes two resource (.r) files, _CopyToResource.r and __AppendRoutineDescriptor.r.

_CopyToResource.r reads the data fork of the sub-project’s target and stores it into a temporary resource.

__AppendRoutineDescriptor.r prepends a routine descriptor to the temporary resource and stores it in your final resource. Before you build your code resource, you will need to modify a number of #define’s in this file. The file contains comments that describe the necessary changes.

The Always check file dates option is enabled in the second project to ensure that the resource description files’ dependency on the sub-project’s target is properly tracked.

__AppendRoutineDescriptor.r is dependant on _CopyToResource.r. These files have been named to compile in the right order.

Once the parent project has been brought up to date, your accelerated code resource will be stored in the project’s resource file (<projectname>.rsrc).

Q: How do I create a fat or safe fat code resource?

A: You can build a fat or safe fat code resource in much the same way that you would create an accelerated code resource, discussed above. The Code Resource project model includes support for these fat code resource types, as well as a few others. See the comments within the project model for details.

Q: Why are my structs a different size in my PowerPC project than they are in my 68K project?

A: The MC68000 chip must reference word or long values from even addresses. More recent chips in the 680x0 family do not have this limitation, but perform faster when referencing word or long values from even addresses. The 68040 and PowerPC chips perform even faster with structures aligned on 4-byte boundaries.

If you need to share data structures in memory between 68K and PowerPC code (e.g. when passing data to the Macintosh Toolbox’s pre-existing 68K-based interfaces), or need to read or write data structures from/to disk with both 68K and PowerPC code, you will need to ensure that your alignment settings match in both your 68K and PowerPC projects.

By default, the PowerPC compilers align fields within structs on 4-byte boundaries. By default, the 68K C++ compiler aligns fields within structs on 2-byte boundaries. Think C always aligns fields within structs on 2-byte boundaries.

The PowerPC compiler supports the following #pragma directive to enable 68K (2-byte) structure alignment in a given structure declaration :

#pragma options align=mac68K
/* Your struct declaration */
#pragma options align=reset

Q: My 68K application, created with the Visual Architect in v7.0(.x), works fine. Why does a fat version of the same application not run on a 68K Mac?

A: Because of changes in the TCL, you will need to re-compile the 68K application with the 68K environment and TCL included in version 8, and re-merge it into your fat application.

Q: When I run my program with the debugger, it launches “Power Mac DebugServices”. This program remains running invisibly. How can I quit this application when I am done debugging?

A: You can write an AppleScript that contains the following :

 tell application "Power Mac DebugServices" to quit

Never run this script while debugging. To ensure that DebugServices has quit when no longer needed, name the script ShutDown, and put it in your (Scripts) folder. The script will be run when you quit the Symantec Project Manager.

Q: Can I use Apple’s new Toolbox Assistant with the Symantec Project Manager?

A: Yes. The Symantec Project Manager supports both The THINK Reference and QuickViewer. It is capable of using both simultaneously.

As with the Think Project Manager, the Symantec Project Manager will allow you to reference the Think Reference or QuickViewer directly if an alias to it, named exactly “THINK Reference” or “Primary Doc Server”, is located in your “(Tools)” folder. The Symantec Project Manager considers these names synonymous. The Symantec Project Manager will search a second documentation server if it’s unsuccessful in finding a match in the first. The second documentation server’s alias must also be located in the “(Tools)” folder and must be named “Secondary Doc Server”.

Q: When I convert my Think Project Manager project, the Symantec Project Manager preserves the segmentation in groups. Is there a way around this?

A: Yes, hold down the shift key when opening the Think Project Manager project.

Q: How do I Check In files to my SourceServer database for the first time? And how do I Check Out files from a SourceServer database that I’ve never checked out before?

A: To do these actions, you must send the command to SourceServer manually. The Symantec Project Manager includes a Worksheet window, available under the Windows menu, that you can use to send commands to SourceServer or ToolServer.

Example of a CheckIn command :

CheckIn -new "filename.cp"

Q: Can I use Check In on the Revision menu to check in header files to a SourceServer database?

A: Yes. In the project Options dialog, on the “Extension” settings page, add .h to the list of supported filename extensions, but do not specify a translator. You will be able to add files with names ending in .h to your project, but they will not be compiled. You can then check these files into your SourceServer database by selecting them in the project window, and then selecting Check In from the Revision menu.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Luminar 1.2.1 - Powerful, adaptive, conf...
Luminar is the new full-featured image editor that adapts to the way you edit photos. Over 300 essential tools to fix, edit, and enhance your photos with comfort. The future of photo editing is here... Read more
1Password 6.8.1 - Powerful password mana...
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
EtreCheck 3.4.4 - For troubleshooting yo...
EtreCheck is an app that displays 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 Communities to... Read more
GarageSale 7.0.8 - Create outstanding eB...
GarageSale is a slick, full-featured client application for the eBay online auction system. Create and manage your auctions with ease. With GarageSale, you can create, edit, track, and manage... Read more
Backblaze 5.0.0.116 - Online backup serv...
Backblaze is an online backup service designed from the ground-up for the Mac. With unlimited storage available for $5 per month, as well as a free 15-day trial, peace of mind is within reach with... Read more
Parallels Desktop 13.0.0 - Run Windows a...
Parallels allows you to run Windows and Mac applications side by side. Choose your view to make Windows invisible while still using its applications, or keep the familiar Windows background and... Read more
Mellel 4.0.0 - The word processor for sc...
Mellel is the leading word processor for OS X and has been widely considered the industry standard for long form documents since its inception. Mellel focuses on writers and scholars for technical... Read more
Adobe Muse CC 2017 2017.1.0 - Design and...
Muse CC 2017 is available as part of Adobe Creative Cloud for as little as $14.99/month (or $9.99/month if you're a previous Muse customer). Adobe Muse 2017 enables designers to create websites as... Read more
WhatsApp 0.2.5862 - Desktop client for W...
WhatsApp is the desktop client for WhatsApp Messenger, a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for... Read more
WhatsApp 0.2.5862 - Desktop client for W...
WhatsApp is the desktop client for WhatsApp Messenger, a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for... Read more

The best deals on the App Store this wee...
The summer is drawing quickly to a close, but luckily there's a game for every season. It's an excellent week for some bargain shopping if that's what you're after. There are some big names and indie darlings in this week's roundup. It's a great... | Read more »
KORG iMono/Poly (Music)
KORG iMono/Poly 1.0.0 Device: iOS Universal Category: Music Price: $19.99, Version: 1.0.0 (iTunes) Description: *** Special Sale for a limited time to celebrate the debut of KORG iMono/Poly (33% OFF) until Sep 30! *** Reviving a... | Read more »
Super Phantom Cat 2 beginner's guid...
Super Phantom Cat 2 presents a whole new world of fun platforming challenges and perplexing puzzles. It's a well-designed platformer with a bright, neon aesthetic that brings the genre up to date. [Read more] | Read more »
Shadow Fight 2 Special Edition (Games)
Shadow Fight 2 Special Edition 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: ** New story chapter! **** No Ads! **** No energy! ** The best fighting series on mobile has returned and... | Read more »
4 RPGs like Final Fantasy XV that deserv...
Square Enix announced another Final Fantasy XV spin-off today - Final Fantasy XV Pocket Edition. This mobile, episodic version of the hit RPG gives the game a chibi-fied makeover. The first episode will be free, followed by 9 more premium episodes... | Read more »
Guild sieges and soul gems in latest upd...
Webzen’s MU Origin hit app stores last year, giving fans of fantasy hack-n-slash MMOs like Diablo a new fix to fixate on. This latest update introduces a competitive guild battle, a fresh dungeon challenge, a mini-game and some elemental gems to... | Read more »
Little Red Lie (Games)
Little Red Lie 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: ARE YOU MORE AFRAID OF POVERTY THAN DEATH? Little Red Lie is a narrative-focused, interactive fiction experience that reduces... | Read more »
You can now apply to be Clash of Clans...
Earlier this month, word got out that the Builder, the trusty handiman who tirelessly built every single building inevery singleClash of Clansbase had called it quits. Sick of seeing his work destroyed endless, the Builder has set out for our world... | Read more »
Meshi Quest beginner's guide - how...
Meshi Quest is Square Enix's newest free-to-play release, and it's a real charmer. You start off as the head of a sushi restaurant, upgrading your food and equipment as you serve visitors heaping helpings of your delicious meals. As you progress,... | Read more »
BUST-A-MOVE JOURNEY (Games)
BUST-A-MOVE JOURNEY 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: BUST-A-MOVE Features:- Shoot bubbles and match 3 or more bubbles of the same color to make them pop!- Complete your... | Read more »

Price Scanner via MacPrices.net

Low Cost Subscription Graphics App Alternativ...
I’m not a fan of the subscription software model, I don’t use any subscription apps. Used to be that you paid your license fee and the app was yours to use indefinitely, or until one opted for a paid... Read more
Clearance 2016 13-inch MacBook Airs, Apple re...
Apple has Certified Refurbished 2016 13″ MacBook Airs available starting at $809. An Apple one-year warranty is included with each MacBook, and shipping is free: – 13″ 1.6GHz/8GB/128GB MacBook Air: $... Read more
2017 13-inch MacBook Airs on sale for $100 of...
B&H Photo new 2017 13″ MacBook Airs on sale today for $100 off MSRP, starting at $899: – 13″ 1.8GHz/128GB MacBook Air (MQD32LL/A): $899, $100 off MSRP – 13″ 1.8GHz/256GB MacBook Air (MQD42LL/A... Read more
Sale! 13-inch 2.3GHz MacBook Pros for $100 of...
B&H Photo has 13″ 2.3GHz MacBook Pros in stock today and on sale for $100 off MSRP including free shipping plus NY & NJ sales tax only: – 13-inch 2.3GHz/128GB Space Gray MacBook Pro (MPXQ2LL... Read more
2016 MacBook Pros, Apple refurbished, availab...
Apple has Certified Refurbished 2016 15″ and 13″ MacBook Pros available starting at $1189. An Apple one-year warranty is included with each model, and shipping is free: – 15″ 2.7GHz Touch Bar Space... Read more
Apple offers Certified Refurbished iPhone 6s...
Apple has Certified Refurbished unlocked iPhone 6s’s and 6s Plus’s available starting at $449. An Apple one-year warranty is included with each phone, and shipping is free: – 16GB iPhone 6s: $449, $... Read more
Apple offers Certified Refurbished Pencils fo...
Apple has Certified Refurbished Apple Pencils available for $85 including free shipping. Their price is $14 off MSRP, and it’s the lowest price available for a Pencil. Read more
2016 15-inch 2.6GHz Touch Bar MacBook Pro ava...
B&H Photo has clearance 2016 15″ 2.6GHz MacBook Pros in stock today and on sale for $500 off original MSRP. Shipping is free, and B&H charges NY & NJ sales tax only: – 15″ 2.6GHz Touch... Read more
21-inch 2.3GHz iMac on sale for $999, save $1...
Amazon has the new 2017 21″ 2.3GHz iMac (MMQA2LL/A) in stock and on sale for $999.99 including free shipping. Their price is $100 off MSRP, and it’s the lowest price available for this model. Read more
Free Instant Translator 2.0 App For iOS Relea...
Mobile application development company, Neoappz has announced the release and immediate availability of Instant Translator 2.0 for iOS devices. Instant Translator is a user-friendly application which... Read more

Jobs Board

*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Development Operations and Site Reliability E...
Development Operations and Site Reliability Engineer, Apple Payment Gateway Job Number: 57572631 Santa Clara Valley, California, United States Posted: Jul. 27, 2017 Read more
Frameworks Engineering Manager, *Apple* Wat...
Frameworks Engineering Manager, Apple Watch Job Number: 41632321 Santa Clara Valley, California, United States Posted: Jun. 15, 2017 Weekly Hours: 40.00 Job Summary Read more
Development Operations and Site Reliability E...
Development Operations and Site Reliability Engineer, Apple Payment Gateway Job Number: 57572631 Santa Clara Valley, California, United States Posted: Jul. 27, 2017 Read more
Frameworks Engineering Manager, *Apple* Wat...
Frameworks Engineering Manager, Apple Watch Job Number: 41632321 Santa Clara Valley, California, United States Posted: Jun. 15, 2017 Weekly Hours: 40.00 Job Summary Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.