36 lines
1.3 KiB
Plaintext
36 lines
1.3 KiB
Plaintext
From bde@kralizec.zeta.org.au Sun Jun 27 01:18:32 1993
|
|
Received: from ultima.socs.uts.EDU.AU by bsd.coe.montana.edu (5.67/KAOS-1)
|
|
id AA11952; Sun, 27 Jun 93 01:18:32 -0600
|
|
Received: by ultima.socs.uts.EDU.AU (5.65+/SMI-3.3)
|
|
id AA03033; Sun, 27 Jun 93 17:10:22 +1000
|
|
Received: by kralizec.zeta.org.au (4.0/SMI-4.0)
|
|
id AA15074; Sat, 26 Jun 93 02:32:58 EST
|
|
Date: Sat, 26 Jun 93 02:32:58 EST
|
|
From: bde@kralizec.zeta.org.au (Bruce Evans)
|
|
Message-Id: <9306251632.AA15074@kralizec.zeta.org.au>
|
|
To: nate@bsd.coe.montana.edu
|
|
Subject: Re: Trapframe information
|
|
Status: OR
|
|
|
|
tf_isp original esp (probably spare - popal ignores it)
|
|
tf_trapno s/w trap no (may be spare - trap.c has already looked at it)
|
|
tf_err h/w error code (probably spare - gets discarded before iret)
|
|
|
|
___fs not stored in 386BSD pcb. Constant anyway unless user has
|
|
screwed with it (?).
|
|
___gs ditto
|
|
___orig_eip in linux, this is on the stack just before the call to the
|
|
emulator. The reason that it's not a local variable is to
|
|
avoid passing around pointers to it - current->frame (or
|
|
whatever) points to everything in the stack frame. The
|
|
macros hide a lot of slow memory references
|
|
current->frame->var.
|
|
|
|
>(And I need to see if I can map orig_eip to one of the three that I'm unsure of
|
|
>in the BSD sources)
|
|
|
|
tf_isp is the least evil.
|
|
|
|
Bruce
|
|
|