M68k/ColdFire: FPU context initialization

Thomas Doerfler Thomas.Doerfler at embedded-brains.de
Mon Nov 5 17:48:15 UTC 2007


we are currently adding FPU support for a ColdFire v4e CPU derivate.
After reading, re-reading (and reading again) the relevant files in
cpukit/score/cpu/m68k in the current M68K (with hardware FPU, e.g.
MC68040) CPU Context management, I have not found, where/how the FPU
context is initialized for a newly created thread.

Can somebody please guide me:

- Is the FPU context in an arbitrary state when a new thread is started?

- Or: Where is the code which defines the initial state of the FPU in a
new thred?

Any hint appreciated,

Thomas Dörfler.

embedded brains GmbH
Thomas Doerfler           Obere Lagerstr. 30
D-82178 Puchheim          Germany
Tel. : +49-89-18 90 80 79-2
Fax  : +49-89-18 90 80 79-9
email: Thomas.Doerfler at embedded-brains.de
PGP public key available on request

Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.

More information about the users mailing list