Mark Morgan Lloyd wrote:
Andrew Haines wrote:
On 10/22/2015 08:08 PM, Mark Morgan Lloyd wrote:
If a program is linked with GNU ld using the --build-id option, how
can it retrieve the value at runtime?
I've never done it but maybe a place to start is use the elfreader
unit in fcl-res to open ParamStr(0) and read the data from the
.note.gnu.build-id section.
Thanks, I'll take a look. I'm looking for something that I can put as a
"magic number" at the bottom of some shared memory, and the build-id is
ideal since it can be set to a fixed value during debugging.
If I'm reading things properly I have to reimplement
TElfResourceReader.Load so I can get a subreader, call the FindSection
method to get a section index, then do something... I've not worked this
out yet and would appreciate any hints... to convert the section index
into an address/length in the file and read the data.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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