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hi everyone,
is there a C compiler that uses Pascal calling conventions?
ie. pushes parameters from left to right and doesnt use variable number of parameters? or is there such a patch for gcc?
thanks in advance

mindvnas

I believe Borland's [Turbo] C/C++ had a keyword for functions that would tell the compiler to use the pascal calling convention.

As for GCC, I don't know.

Oh... and the compiler from MMURTL (?) used the pascal calling convention (pretty sure, anyway...)

Jeff

Borland C++ 4.0 on up also does, as well as VC++ and free Watcom

VC++ means ms visual c++ or something else i dont know about?
borland c++ 4.0: is there such a compiler? i though they'd abandoned it at 3.0

anyway, thanks for the answers.
mindvnas

VC++ doesn't. I'd be surprised if any 32-bit Windows compiler supported this, as the Pascal calling convention is no longer used by the Windows API.

Why do you need to use the Pascal convention?

Hey,
Actully Visual C++ does support Pascal calling coventions (Watcom and Borland too). Before you miss-inform people you should type some code and see for your self. Also Borland made C/C++/inline ASM compilers up to version 5.02. I have it.  They, unlike MS continued to support both 32-bit and 16-bit developement. Watcom, however, supports DOS real mode, 16-bit PMODE DOS, 32-PMODE DOS (with many different extenders to choose from), Win386 (for Windows 386 i assume), Win16, Win32 (console and GUI), and Netware.

-VoidLogic

Borland for sure does... they'd be stupid not to... seeing as though they own a HUGE chunk of the pascal development market (with Delphi and Kylix).

As for why... dunno... it's easier to code, at least

Cheers,
Jeff

Version 1.52 was the last version of VC++ to support the Pascal calling convention.

From MSDN (__pascal keyword):

"The __pascal, __fortran, and __syscall calling conventions are no longer supported. You can emulate their functionality by using one of the supported calling conventions and appropriate linker options."

your right as the LASTEST version does not support it. But it was critacal for many people devopleding Win 16s. Anyway, I hope no one is try to use VC++ 6.0 for OS dev .

> VC++ doesn't. I'd be surprised if any 32-bit Windows compiler supported
> this, as the Pascal calling convention is no longer used by the Windows API.
yup, you may be right:
i have checked openWatcom 1.0 (since i couldnt find Watcom 10/11), and though it states it supports Pascal calling convention, it does not, actually. same results for borland c++ builder 5.5 -> have a "-p" option, but it doesnt do anything...

> Why do you need to use the Pascal convention?
because i am more familiar with it, and my OS uses it too.
anyway, i just started C a few weeks ago, and i want to finish my OS in C (hope its faster that developing in pure assembly), but if i cant find such a compiler, i am stuck.

are you sure open watcom does not support it? i dont have it on this machine anymore (nor 10.6/11 now either).

i know 10.6 supported pascal calling convention at definitions. as I remmber linking to some pascal libs when I did some demo coding.

i still dont understand why you _need_ pascal calling convention in a C compiler. just change the order of passing in to your asm routines.. cant be that hard.

Open Watcom does support it:

"__pascal

Open Watcom C/C++ supports the __pascal keyword to describe Pascal functions that are called using a special convention described by a pragma in the "stddef.h" header file.

Open Watcom C/C++ predefines the macros pascal,  _pascal and _Pascal to be equivalent to the __pascal keyword."

thanks. i didnt find that one... i looked at the command line switches and there was no such option.
i need it because in Pascal, the called routine clears up the stack, meanwhile in C the calling code does that (for support of variable length parameters lists)
thanks again