Re: [Tinycc-devel] asm labels

[Thomas Preud'homme]

Le lundi 13 septembre 2010 16:56:33, grischka a écrit :
> Thomas Preud'homme wrote:
> > Greetings everyone,
> > 
> > I've just added support for asm labels for functions. The syntax is the
> > same
> 
> > as in gcc:
> Well, feel free to answer this or not, but I'm just curious: Do you have
> an idea what the gcc people had in mind (if anything) when they added this
> feature?  I mean, I declare "foo" but it's "bar" really?  Why not declare
> it as "bar"?  Or why not write "#define foo bar"?  And what has this
> feature to do with asm, exactly?
> 
> Anyway, as to tinycc, I noticed that it fails to compile with NOTALLINONE
> defined.  So if this is not an "asm-feature" really I'd suggest to move
> the two functions "parse_asm_str" and "asm_label_instr" elsewhere (e.g.
> to libtcc.c or tccgen.c) and remove CONFIG_TCC_ASM from tccasm.c again.
> The idea is that tccasm.c can stay out from compilation on platforms
> without asm support.

Done. See commit b8adf00
> 
> Cheers,
> 
> --- grischka

Best regards,

Thomas Preud'homme
> 
> > ==== test1.c ====
> > int foo(void) __asm__("bar");
> > 
> > int main(void)
> > {
> > 
> >     return foo();
> > 
> > }
> > 
> > ==== test2.c ====
> > #include <stdio.h>
> > 
> > int foo(void)
> > {
> > 
> >   puts("foo called);
> >   return 0;
> > 
> > }
> > 
> > int bar(void)
> > {
> > 
> >   puts("bar called");
> >   return 0;
> > 
> > }
> > 
> > and then tcc -o test test1.c test2.c && ./test will print "bar called".
> > 
> > Asm label will come in another commit. Relevant commit for this change is
> > 9b09fc3
> > 
> > Best regards,
> > 
> > Thomas Preud'homme

signature.asc
Description: This is a digitally signed message part.