Re: PASCAL

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#2702

From: Scott Evernden
Date: Mon, 11 Jan 1993 22:06

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In article <93008.102758TMVANDER@MTUS5.BITNET> TMVANDER@MTUS5.BITNET writes:
>I'm new to this programming in windows, and I'm curious as to why WinMain
>is alwasy declared as a PASCAL calling sequence.  Please e-mail me.
>      - Todd Vander Woude
>--
>tmvander@major.cs.mtu.edu

I believe it's because the Pascal calling convention is slightly more
efficient than the C convention.  With C routines, the caller must cleanup
(pop) arguments passed to a function.  With the PASCAL convention, the
called routine cleans up the stack.  A variation of the INTEL RET opcode
can include a count which will automagically do this stack cleanup as part
of the return operation, saving the caller the trouble and the cycles.

Of course, this might not be the reason also...

-scott
----
Technical Consultant      GrayMatter Software      Holliston MA
spe@world.std.com    scott@opl.com    73116.3451@compuserve.com
User interface and application development technology and tools

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Path: arc1-ca.pugleaf.net!sparky!uunet!opl.com!scott
From: scott@opl.com (Scott Evernden)
Newsgroups: comp.os.ms-windows.programmer.misc
Subject: Re: PASCAL
Message-ID: <1395@ottawa.opl.com.opl.com>
Date: 11 Jan 93 22:06:51 GMT
References: <93008.102758TMVANDER@MTUS5.BITNET>
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Organization: OPL. , Inc.
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