🚀 go-pugleaf

In article <1992Dec11.225015.26304@eng.ufl.edu> zzang@stat.ufl.edu (zzang) writes:
>the C pushs the arg from right to left onto
>the stack when calling a function.
>the PASCAL pushs the args from left to right.
>I was told that the C calling convention results
>in larger as well as slower program.
>(due to some cleanup work of the stack after call??)

I don't think the parameter order makes any difference to calling efficiency.

The important difference between standard C and Pascal calling conventions 
is that in C, it's up to the caller to clean up the stack, while in Pascal 
it's up to the called routine.  It's this difference that gives the Pascal 
convention the edge:  every time you call a C-convention routine you need to 
fix up the stack afterward, while a Pascal-convention routine does 
it in just one place.  On a PC, there's even a special form of RET to 
support the Pascal convention.  

The advantage of the C convention is that it makes it easy to call routines 
variable numbers of parameters.

Duncan Murdoch
dmurdoch@mast.queensu.ca