On Wed, 19 Nov 2003 y2bismil@xxxxxxxxxxxxxxxxxxxx wrote: > Hi, > > No, its not a problem of variable arguments. There's no problem per se. I'm > just asking if its guaranteed or if its one of those GCC 'hints' that may or may > not be done. I suppose it just a hint, that may (will?) be ignored. On the other hand, see: http://gcc.gnu.org/onlinedocs/gcc/Explicit-Reg-Vars.html#Explicit%20Reg%20Vars Kimmo > > > Thanks, > > Yamin > > Quoting qinfeng.zhang@xxxxxxxxxxx: > > > Is it the problem of vararg? > > > > > > > > > > > > > > > > > > > > > > y2bismil@xxxxxxxxxxxxxxxxxxxx > > Sent by: > > gcc-help-owner@xxxxxxxxxxx > > 2003-11-19 04:41 > > > > > > To: GCC- help <gcc-help@xxxxxxxxxxx> > > cc: (bcc: Qinfeng Zhang/SHA/RESEARCH/PHILIPS) > > Subject: regparm guarantee > > Classification: > > > > > > > > > > > > I was wondering if by specifying regparam for a function if it is > > GUARANTEED > > that parameters passed to the function will be made via register. I ask > > this as > > I'm interfacing with an assembly written library which links to external > > c-code. > > When the assembly routines call c-function, there are some that are > > stdcall, > > and some pass variables through register (they only pass 1 variable as far > > as I > > can see in EAX). > > > > Is there any way to explicitly say "use EAX for this parameter?" > > >From the wording of the manual under 'function attributes', it doesn't > > appear > > so. But I might guess that it places the 1st paramter in EAX, second in > > EBX, > > then ECX, EDX. > > > > Thanks, > > > > Yamin > > > > ---------------------------------------- > > This mail sent through www.mywaterloo.ca > > > > > > > > > > > ---------------------------------------- > This mail sent through www.mywaterloo.ca >
