From: Denis Vlasenko <vda@ilport.com.ua>
To: "linux-os \(Dick Johnson\)" <linux-os@analogic.com>
Cc: "Tomasz Malesinski" <tmal@mimuw.edu.pl>, linux-kernel@vger.kernel.org
Subject: Re: Segfault on the i386 enter instruction
Date: Fri, 12 May 2006 17:20:13 +0300 [thread overview]
Message-ID: <200605121720.13820.vda@ilport.com.ua> (raw)
In-Reply-To: <Pine.LNX.4.61.0605121003450.9012@chaos.analogic.com>
On Friday 12 May 2006 17:07, linux-os (Dick Johnson) wrote:
> > .file "a.c"
> > .version "01.01"
> > gcc2_compiled.:
> > .section .rodata
> > .LC0:
> > .string "asdf\n"
> > .text
> > .align 4
> > .globl main
> > .type main,@function
> > main:
> > enter $10008, $0
> > # pushl %ebp
> > # movl %esp,%ebp
> > # subl $10008,%esp
> > addl $-12,%esp
> ^^^^^^^^^^^^^^____________ WTF
> adding a negative number is subtracting that positive value.
> You just subtracted 0xfffffff3 (on a 32-bit machine) from
> the stack pointer. It damn-well better seg-fault!
No. Try it yourself.
--
vda
next prev parent reply other threads:[~2006-05-12 14:20 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-12 13:16 Segfault on the i386 enter instruction Tomasz Malesinski
2006-05-12 13:47 ` Denis Vlasenko
2006-05-12 13:50 ` Andi Kleen
2006-05-12 14:03 ` Denis Vlasenko
2006-05-12 15:31 ` Tomasz Malesinski
2006-05-15 11:36 ` Bart Hartgers
2006-05-15 11:46 ` Andi Kleen
2006-05-15 13:36 ` linux-os (Dick Johnson)
2006-05-15 14:19 ` Bart Hartgers
2006-05-12 14:07 ` linux-os (Dick Johnson)
2006-05-12 14:20 ` Denis Vlasenko [this message]
2006-05-12 14:42 ` linux-os (Dick Johnson)
2006-05-12 14:53 ` Denis Vlasenko
2006-05-15 20:53 ` Bill Davidsen
-- strict thread matches above, loose matches on Subject: below --
2006-05-14 17:56 Stas Sergeev
2006-05-15 7:40 ` Andi Kleen
2006-05-15 17:15 ` Stas Sergeev
2006-05-15 18:44 ` Andi Kleen
2006-05-15 19:38 ` Stas Sergeev
2006-05-15 19:56 ` Lee Revell
2006-05-15 22:49 ` Ingo Oeser
2006-05-15 22:56 ` Lee Revell
2006-05-16 2:29 Chuck Ebbert
2006-05-16 9:32 ` Andi Kleen
2006-05-17 8:20 Chuck Ebbert
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200605121720.13820.vda@ilport.com.ua \
--to=vda@ilport.com.ua \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-os@analogic.com \
--cc=tmal@mimuw.edu.pl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox