Click Here
home features news forums classifieds faqs links search
6071 members 
Amiga Q&A /  Free for All /  Emulation /  Gaming / (Latest Posts)
Login

Nickname

Password

Lost Password?

Don't have an account yet?
Register now!

Support Amigaworld.net
Your support is needed and is appreciated as Amigaworld.net is primarily dependent upon the support of its users.
Donate

Menu
Main sections
» Home
» Features
» News
» Forums
» Classifieds
» Links
» Downloads
Extras
» OS4 Zone
» IRC Network
» AmigaWorld Radio
» Newsfeed
» Top Members
» Amiga Dealers
Information
» About Us
» FAQs
» Advertise
» Polls
» Terms of Service
» Search

IRC Channel
Server: irc.amigaworld.net
Ports: 1024,5555, 6665-6669
SSL port: 6697
Channel: #Amigaworld
Channel Policy and Guidelines

Who's Online
12 crawler(s) on-line.
 109 guest(s) on-line.
 0 member(s) on-line.



You are an anonymous user.
Register Now!
 Comi:  17 mins ago
 Gunnar:  20 mins ago
 amigakit:  37 mins ago
 vox:  1 hr 3 mins ago
 zipper:  1 hr 6 mins ago
 kolla:  1 hr 13 mins ago
 OneTimer1:  1 hr 26 mins ago
 BigD:  2 hrs 9 mins ago
 OlafS25:  2 hrs 11 mins ago
 NutsAboutAmiga:  2 hrs 42 mins ago

/  Forum Index
   /  Amiga OS4 Hardware
      /  Spectre and Dr evil for the PPC
Register To Post

PosterThread
Barana 
Spectre and Dr evil for the PPC
Posted on 9-Jan-2018 22:40:55
#1 ]
Cult Member
Joined: 1-Sep-2003
Posts: 843
From: Straya!

http://tenfourfox.blogspot.com.au/2018/01/more-about-spectre-and-powerpc-or-why.html?m=1
Enjoy

_________________
Never underestimate the bandwidth of a station wagon full of tapes hurtling down the highway.

I serve King Jesus.
What/who do you serve?

 Status: Offline
Profile     Report this post  
Chain-Q 
Re: Spectre and Dr evil for the PPC
Posted on 30-Jan-2018 1:21:23
#2 ]
Cult Member
Joined: 31-Jan-2005
Posts: 824
From: Budapest, Hungary

@Barana
Well, on the request of someone, I hacked the PPC version of the PoC exploit to compile for MorphOS, and more or less duplicated the results of the TenFourFox guy.

Here, including screenshots from some hardware:

http://charlie.amigaspirit.hu/temp/private/spectre/

TL;DR: 604e and 603e doesn't seem to be affected, the faster G4s are, including ours in the MorphOS-Macs and even the Pegasos 2/G4 (although the PoC was very unreliable on the Pegasos 2, and sometimes just returned garbage, or only partial strings!). I don't have a G3 or 4xx based system to test with.

Although on a non- or limited memory protected system like Amiga a Spectre-like exploit makes little sense as an attack vector, but nevertheless, there are Linux PPC folks out there, so better know what you're dealing with.

Happy testing. Would be interesting if someone compiled this for OS4, and tested on the X1000 and X50x0 series especially.

_________________
MorphOS, classic Amiga, demoscene, and stuff
"When a bridge is not enough, build a Viaduct!"
"Strip the Amiga community of speculation and we can fit every forum on a 720k floppy" (by resle)

 Status: Offline
Profile     Report this post  
bison 
Re: Spectre and Dr evil for the PPC
Posted on 30-Jan-2018 2:30:31
#3 ]
Elite Member
Joined: 18-Dec-2007
Posts: 2112
From: N-Space

@Barana

I don't suppose this matters much to anyone running AmigaOS, since it doesn't have any memory protection to circumvent in the first place. There's no point in closing the windows if the back door is wide open.

_________________
"Unix is supposed to fix that." -- Jay Miner

 Status: Offline
Profile     Report this post  
thellier 
Re: Spectre and Dr evil for the PPC
Posted on 30-Jan-2018 8:05:23
#4 ]
Regular Member
Joined: 2-Nov-2009
Posts: 263
From: Paris

@Chain-Q
> if someone compiled this for OS4
http://amigaworld.net/modules/newbb/viewtopic.php?topic_id=42332&forum=17&start=20&viewmode=flat&order=0

 Status: Offline
Profile     Report this post  
KimmoK 
Re: Spectre and Dr evil for the PPC
Posted on 30-Jan-2018 14:18:31
#5 ]
Elite Member
Joined: 14-Mar-2003
Posts: 5211
From: Ylikiiminki, Finland

@bison

"There's no point in closing the windows if the back door is wide open."

Before having a back door, one might consider building walls first.
(walls help with the window stuff as well)

Amiga environment is like Finnish countryside, no need to lock the door and one can leave car running with keys during shopping, when there is only

_________________
- KimmoK
// For freedom, for honor, for AMIGA
//
// Thing that I should find more time for: CC64 - 64bit Community Computer?

 Status: Offline
Profile     Report this post  
Chain-Q 
Re: Spectre and Dr evil for the PPC
Posted on 30-Jan-2018 15:08:12
#6 ]
Cult Member
Joined: 31-Jan-2005
Posts: 824
From: Budapest, Hungary

@thellier
Oops. Well. As I said, someone asked, and it was faster to just do the port than to look around if someone has done it already. :) Good to know. Also the results are interesting in that thread, thanks!

_________________
MorphOS, classic Amiga, demoscene, and stuff
"When a bridge is not enough, build a Viaduct!"
"Strip the Amiga community of speculation and we can fit every forum on a 720k floppy" (by resle)

 Status: Offline
Profile     Report this post  

[ home ][ about us ][ privacy ] [ forums ][ classifieds ] [ links ][ news archive ] [ link to us ][ user account ]
Copyright (C) 2000 - 2019 Amigaworld.net.
Amigaworld.net was originally founded by David Doyle