04-24-2019
Well, essentially I wanted to expand my debugger for AmigaOS to work on other platforms. I could do just a libgdb wrapper, but I thought it would be more interesting to do it manually and figure out, how these things work on other OS'es. Which means mainly linux at the time.
Obviously I got stuck just trying to find the address of a simple symbol. I came across this:
GitHub - TartanLlama/minidbg: A mini x86 linux debugger for teaching purposes But he has the same problem: There is no symbol relocation done, so he doesn't know the actual placement of the symbols in the executable.
I am going to look into if shared memory of the /proc handler can help me. If not, I am probably going to do some libgdb wrapper for my app and focus on getting that to work and other platforms.
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LEARN ABOUT DEBIAN
svnpath
SVNPATH(1) SVNPATH(1)
NAME
svnpath - output svn url with support for tags and branches
SYNOPSIS
svnpath
svnpath tags
svnpath branches
svnpath trunk
DESCRIPTION
svnpath is intended to be run in a Subversion working copy.
In its simplest usage, svnpath with no parameters outputs the svn url for the repository associated with the working copy.
If a parameter is given, svnpath attempts to instead output the url that would be used for the tags, branches, or trunk. This will only
work if it's run in the top-level directory that is subject to tagging or branching.
For example, if you want to tag what's checked into Subversion as version 1.0, you could use a command like this:
svn cp $(svnpath) $(svnpath tags)/1.0
That's much easier than using svn info to look up the repository url and manually modifying it to derive the url to use for the tag, and
typing in something like this:
svn cp svn+ssh://my.server.example/svn/project/trunk svn+ssh://my.server.example/svn/project/tags/1.0
svnpath uses a simple heuristic to convert between the trunk, tags, and branches paths. It replaces the first occurrence of trunk, tags, or
branches with the name of what you're looking for. This will work ok for most typical Subversion repository layouts.
If you have an atypical layout and it does not work, you can add a ~/.svnpath file. This file is perl code, which can modify the path in
$url. For example, the author uses this file:
#!/usr/bin/perl
# svnpath personal override file
# For d-i I sometimes work from a full d-i tree branch. Remove that from
# the path to get regular tags or branches directories.
$url=~s!d-i/(rc|beta)[0-9]+/!!;
$url=~s!d-i/sarge/!!;
1
LICENSE
GPL version 2 or later
AUTHOR
Joey Hess <joey@kitenet.net>
Debian Utilities 2013-12-23 SVNPATH(1)