[PATCH] tools: Add gdbinit helper with LoadSymbolFiles command.

[Bernhard Übelacker]

Hello Rémi,
I was trying to do similar with rr-debugger [1] to load symbols
iterating over mapped files, but it never got into a really got state.

But with a little modification (patch attached), your script does
the same and is way less complicated.

I noted just one issue while testing a little with
notepad.exe, with plain gdb and rr:

Sections other than .text of ELF libraries get mapped to address 0x0.
(Could you see this too in 'info target'?)
This combined with a kind of huge .data section of shell32.dll.so
overlaps then with .text of notepad.exe, therefore gdb shows then
in a backtrace not the right symbols.
The other attached patch tries to also map the data section to resolve
this. But I am not sure if other sections should also be mapped.

Thanks for sharing.

Kind regards,
Bernhard

[1] https://github.com/rr-debugger/rr/pull/2810

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