On 24 Jan 2008, at 15:07, Micha Nelissen wrote:
Jonas Maebe wrote:
That instruction clears a floating point exception flag (all those
flags are cleared by the system unit's startup code). It probably
means that your powerpc does not have floating point support (is
it an embedded one?). There is no softfloat support for the ppc
ports at this time.
Ah, bummer. It has an e500v2 core, which has "embedded" floating
point support, whatever that means.
It means that
a) you can connect some fpu coprocessor
b) it throws specific "fpu not present" exception if none is present,
so you can catch those and emulate them if you want to
It does not include fp instructions that require floating-point
registers (FPRs). The instructions work on the GPRs instead?
No, those instructions simply do not exist.
Is it just startup code, or many places that assume floating point
support?
I have no idea, since I never considered adding support for ppc
without an fpu.
Jonas
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