Lists

Terms and Conditions
Lists hosted on this site
Email the Postmaster
Tips for posting to public mailing lists

x87 status word size

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

x87 status word size

Subject: x87 status word size
From: Jonas Maebe <email@hidden>
Date: Sat, 25 Apr 2009 14:07:56 +0200

Hello,

Why is the x87 tag word field (__fpu_ftw) in _STRUCT_X86_FLOAT_STATE32 in osfmk/mach/i386/_structs.h only 8 bits? The hardware tag word is 16 bit. I guess it "overflows" into the next "__fpu_rsrv1" field when saving/restoring the fpu state, so in practice it probably doesn't really matter as long as you don't directly access it.

Thanks,


Jonas
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden



Prev by Date:
Re: Determining extended attribute support on a volume

Next by Date:
Re: Determining extended attribute support on a volume

Previous by thread:
Re: Determining extended attribute support on a volume

Next by thread:
CoreGraphics Include Issue

Index(es):

Date
Thread