[U-Boot] [RFC] x86: Do no use reparm as it break libgcc linkage
Mike Frysinger
vapier at gentoo.org
Fri Nov 11 17:24:52 CET 2011
On Friday 11 November 2011 00:16:47 Graeme Russ wrote:
> On Fri, Nov 11, 2011 at 4:04 PM, Mike Frysinger wrote:
> > i can't think of any calls off the top of my head which would result in
> > invoking a func in libgcc.a.
>
> Any function listed here:
>
> http://gcc.gnu.org/onlinedocs/gccint/Libgcc.html
>
> But we can discount any float/double routines, exception handling and
> split stack which leaves just:
>
> http://gcc.gnu.org/onlinedocs/gccint/Integer-library-routines.html
yes, and pretty much all of those are emitted implicitly due to math
operations (64bit divs/mults/etc...), or explicitly when the user does
__builtin_xxx() (and use of __builtin_xxx is not affected by -fno-builtins).
none of those that i can see would come via a C library call that gcc would
implicitly rewrite.
-mike
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