DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:from:content-type:content-transfer-encoding
	:mime-version:date:subject:message-id:to; q=dns; s=default; b=yK
	9U48xlei/HORy2olx3phqgvSBPZ2mvny9pRmXEA/u6wod5QnsJ8n4ppnPIULZJZF
	qvsRwJFAksVqUxUXv+2aqTav1iJ8yuEZszJF56imaAVCW35kt2DVDjTPoWYltLP0
	t4/BOrjY656SKdWyawB6lmj2BZnLuPKSAUA6uv6n4=
Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm
Sender: cygwin-owner@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
From: Hamza Sood <hamza_sood@me.com>
Content-type: text/plain; charset=us-ascii
MIME-version: 1.0 (1.0)
Date: Sun, 31 Jul 2016 19:37:29 +0100
Subject: Why are the base addresses for Cygwin executable so high?
Message-id: <D233DDCF-E872-4C9F-A0E1-A85124B58F5D@me.com>
To: cygwin@cygwin.com
Content-Transfer-Encoding: 8bit

Hi,

I've noticed that Cygwin related executables (including ones compiled myself) seem to have a base address of 0x100400000, whereas all other windows executables seem to use 0x400000.
Is there a particular reason why Cygwin executables need to start so high up? What's going on in the 4GB underneath them?
--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple