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Re: Why are the base addresses for Cygwin executable so high?

From: Marco Atzeri <marco dot atzeri at gmail dot com>
To: "cygwin at cygwin dot com" <cygwin at cygwin dot com>
Date: Sun, 31 Jul 2016 21:57:00 +0200
Subject: Re: Why are the base addresses for Cygwin executable so high?
Authentication-results: sourceware.org; auth=none
References: <D233DDCF-E872-4C9F-A0E1-A85124B58F5D@me.com>

On 31/07/2016 20:37, Hamza Sood wrote:

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?
--



look on
/proc/<pid>/maps

below 0x100000000 there are
- windows system dll's
- heaps and stacks

Regards
Marco




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References:
- Why are the base addresses for Cygwin executable so high?
  - From: Hamza Sood

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