Re: RFA: char is unsigned on some architectures

[Andrew Cagney <ac131313@cygnus.com>]

> ISO C specifies that `char' acts like either `signed char' or
> `unsigned char'.  At the moment, GDB assumes that `char' is `signed
> char'.  This patch allows the architecture to specify the correct
> answer, and sets the value correctly for the IBM S/390 architecture.
> 
> 2001-12-19  Jim Blandy  <jimb@redhat.com>
> 
> * gdbarch.sh (TARGET_CHAR_SIGNED): New macro.
> 	* gdbarch.c, gdbarch.h: Regenerated.
> 	* gdbtypes.c (build_gdbtypes): If TARGET_CHAR_SIGNED is zero,
> 	set the TYPE_FLAG_UNSIGNED bit on the type.
> 	* s390-tdep.c (s390_gdbarch_init): On the S/390, characters
> 	are unsigned by default.
> 


Hmm, the rs6000 and prodogy (Hmm, IBM ...) are also unsigned.  Want to 
add that ``obvious'' tweek?

Andrew