[kaffe] ARM Double problems

[Jari Korva]

Hi again,

On Fri, 5 Nov 2004, Helmer [ISO-8859-15] Krämer wrote:
> config/config-hacks.h defines a macro DOUBLE_ORDER_OPPOSITE
> which tells kaffe that the word order of doubles is different
> from the word order of jlongs (it's used in kaffe/kaffevm/fp.c).
> At the moment this macro is always defined when compiling kaffe
> for arm. Could you try whether the double problems are solved
> when this macro is not defined? If so, we should work out some
> preprocessor or configure magic to detect whether that macro
> is necessary.

How about this:

#include <endian.h>

...

#if __BYTE_ORDER != __FLOAT_WORD_ORDER
  #define DOUBLE_ORDER_OPPOSITE
#endif

It seems to produce correct results at least on my x86, armv5b (XScale
IXP) and armv5l (StrongARM).

Cheers,
  Jari