Re: re-enabling debugging of 32 bit processes with 64 bit debugger

[Jason Thorpe <thorpej%me.com@localhost>]

> On Jun 30, 2019, at 6:46 AM, Andrew Cagney <andrew.cagney%gmail.com@localhost> wrote:
> 
> Things started to go down hill when the debugger developers decided
> that rooting around in the process to extract the memory map was "a
> good idea". After all, it too is likely been corrupted by the crashing
> program.
> 
> There's /proc/PID/maps, there should be a PTRACE equivalent and it
> should also be dumped into the core file.

Certainly, the ELF core files dumped by NetBSD have a PT_LOAD section for each VM map entry, so the memory map information is already there.  Now, for mapped files, it doesn't record the path name like you get with /proc/PID/maps, but that's something that could be fixed by having one or more additional PT_NOTE sections where the note contains a PT_LOAD index to file name mapping (with the path string being contained in the note).

-- thorpej