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 TWU 1.0 - INSIDE TURBO PASCAL UNITS for TP6.0/TPW1.0   William L. Peavy 06.06.1991

Если вы интересуетесь, что находится внутри TPU/TPW модулей от TP6/TPW1.0 - то эта утилита для вас.
If you want to know what is in a .TPU (unit) file produced by either Version 1.0 of Turbo Pascal for Windows or by Version 6.0 of Turbo Pascal from Borland International, then this paper is for you. It doesn't explain quite everything since the I don't have access to secret documents or anything like that and since some of the data in .TPU files just doesn't have enough auxiliary information to make its role clear. However, it is possible to learn a great deal about how Turbo Pascal organizes the information it needs to refer to, and it is also possible to learn just what kind of code the compiler produces.



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------------------------------ INSIDE TURBO PASCAL UNIT FILES Version 6.0 for MS-DOS Version 1.0 for WINDOWS ------------------------------ by William L. Peavy ---------------- June 6, 1991 ABSTRACT If you want to know what is in a .TPU (unit) file produced by either Version 1.0 of Turbo Pascal for Windows or by Version 6.0 of Turbo Pascal from Borland International, then this paper is for you. It doesn't explain quite everything since the I don't have access to secret documents or anything like that and since some of the data in .TPU files just doesn't have enough auxiliary information to make its role clear. However, it is possible to learn a great deal about how Turbo Pascal organizes the information it needs to refer to, and it is also possible to learn just what kind of code the compiler produces. This is the fourth in a series of reports on the subject of Turbo Pascal Units, the previous reports treating with Turbo Pascal Versions 5.0 through 6.0. The evolution of these files in the face of changing requirements has been fascinating to behold and deciphering their contents has been challenging to say the least. The programs supplied with this report have been reorganized from their 6.0 style and many identifiers have been changed. There are also a few bug fixes and algorithm changes. Other changes were dictated by the changes in the utilization of the TPU file itself by the Windows Compiler. Since I have a "real" job which requires my full attention, and since it doesn't involve use of these products in any direct way, I am usually hard-pressed to find the personal time to conduct this research. Consequently, I always refuse to commit to follow-up or even error correction. It would be irresponsible of me to pretend it could be otherwise. Even so, this is a revised report which contains a few error fixes and discusses the newly enhanced program which incorporates these fixes and sports some enhanced capabilities. What's NEW 06/03/91 - Code drastically re-structured. Program now supports units compiled by TURBO PASCAL for WINDOWS as well as TURBO Pascal Version 6.0. Pointer manipulation code removed for safety. Listing format is (hopefully) improved and size is reduced. Program now retrieves units mentioned in "USES" statements and is thus able to provide actual type names (and Array bounds) when displaying most LG's. Unit version numbers are checked. Source of each unit file successfully retrieved is also printed at beginning of run with the appropriate TURBO Library (.TPL) being searched if necessary to resolve referenced Units. Unit files of up to about 320 KB are now fully supported! Program now asks if the Unit is for WINDOWS or DOS and bases its .TPL Library search on the response. The index has been re-worked to include context info and to improve its utility. Several minor mistakes are also fixed in both the program and in its reports including a few minor disassembler bugs involving the AAM and AAD instructions. The technical report now describes many of the new features that are found in Units compiled by the WINDOWS compiler. Files on the Distribution Disk Filename.x Description of Contents ----------- ------------------------------------------------- README.!!! This file (you're reading it now) WHATS.NEW Description of new features and fixes, etc. TWU1DOC.TXT Report on Research (58 pages; copy to PRN:) TWU1.EXE The Supplied Program ready to run TWU1.PAS Turbo Pascal Source - The Main Program TWU1EQU.PAS Turbo Pascal Source - General-Purpose Stuff TWU1RPT.PAS Turbo Pascal Source - Text File Output Unit TWU1UAM.PAS Turbo Pascal Source - Access Methods for .TPU Files TWU1UNA.PAS Turbo Pascal Source - Disassembler Unit The Author This work was done by William L. Peavy, Houston Texas as a private research endeavor. I am interested in feedback, suggestions, constructive criticism, and success stories. I can be reached via Compuserve (70042,2310), via the HAL-PC Telecom-1 BBS or via the HAL-PC Telecom-2 BBS. Especially welcome is feedback regarding new discoveries that you might make about .TPU files. Enjoy!