Re: [Tinycc-devel] Bug: malloc + function returning double + comparison between doubles

[Daniel Glöckner]

On Sun, Jun 10, 2012 at 08:03:24PM +0200, Thomas Preud'homme wrote:
> Le dimanche 10 juin 2012 20:01:11, Michael Matz a écrit :
> > > but we don't build a libtcc1 for ARM
> > 
> > ... I think we should do so then.  As it seems the various arithmetic
> > routines of libtcc1.c aren't needed on arm it would only contain alloca.
> > I'd vote for the assembler implementation (don't know if it would have to
> > differ between the eabi and oldabi variants).
> 
> It doesn't use VFP so it will work for both ABI. It also work for the new 
> eabihf which I introduced as there is no float parameter.

Compiler generated calls have been chosen to allow the use of
libgcc_s.so.1 on ARM EABI and OABI. It is needed for divisions,
64-bit shifts, and some floating point conversion. One day we
might also support devices without floating point hardware/emulator,
where we could use the EABI soft float functions already contained
in libgcc. I also added a configure option --with-libgcc to make
TinyCC automatically link to libgcc_s.so.1 instead of libtcc1.a.

If we now start to supply a libtcc1.a that does not include the
functions from libgcc_s.so.1, we need to link to two libraries.

  Daniel