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Re: [PATCH] Support gzip compressed exec and core files in gdb

From: Michael Eager <eager at eagerm dot com>
To: "gdb-patches at sourceware dot org" <gdb-patches at sourceware dot org>, binutils <binutils at sourceware dot org>, Alan Modra <amodra at gmail dot com>
Date: Wed, 11 Mar 2015 07:56:30 -0700
Subject: Re: [PATCH] Support gzip compressed exec and core files in gdb
Authentication-results: sourceware.org; auth=none
References: <54FF77D6 dot 7010400 at eagerm dot com> <20150311081454 dot GK11451 at bubble dot grove dot modra dot org>

On 03/11/15 01:14, Alan Modra wrote:

On Tue, Mar 10, 2015 at 04:01:42PM -0700, Michael Eager wrote:

This operation cannot be done completely by BFD because BFD allows an opened
file to be passed to it for processing.  GDB uses this functionality.


I'd prefer you do this entirely outside of BFD, without adding another
field to struct bfd.  I think that can be done by simply clearing
abfd->cacheable on files you uncompress.  This prevents BFD from
closing the file, so you won't need to open it again.


GDB closes the exec file, then uses BFD to seek (I think when reading
syms).  BFD then re-opens the file, so it needs the name of the
uncompressed file.

--
Michael Eager	 eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077

Follow-Ups:
- Re: [PATCH] Support gzip compressed exec and core files in gdb
  - From: Alan Modra

References:
- [PATCH] Support gzip compressed exec and core files in gdb
  - From: Michael Eager
- Re: [PATCH] Support gzip compressed exec and core files in gdb
  - From: Alan Modra

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