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Date: Thu, 02 May 2019 18:52:00 -0000
Message-Id: <83zho4ofkh.fsf@gnu.org>
From: Eli Zaretskii <eliz@gnu.org>
To: Kevin Buettner <kevinb@redhat.com>
CC: gdb-patches@sourceware.org, simark@simark.ca
In-reply-to: <20190502112517.64b6fa20@f29-4.lan> (message from Kevin Buettner	on Thu, 2 May 2019 11:25:17 -0700)
Subject: Re: The 'cold' function attribute and GDB
References: <83wojaovbp.fsf@gnu.org>	<077aee8c-7bef-bad6-a6a1-e69f116cc18b@simark.ca>	<20190501195113.69aea752@f30-4.lan>	<A55D98D9-5801-42BB-9E12-060D4398ACC7@gnu.org>	<20190502003849.6759d177@f29-4.lan>	<83muk4q3rr.fsf@gnu.org> <20190502112517.64b6fa20@f29-4.lan>
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> Date: Thu, 2 May 2019 11:25:17 -0700
> From: Kevin Buettner <kevinb@redhat.com>
> Cc: gdb-patches@sourceware.org, simark@simark.ca
> 
> (gdb) x/i 0x000000000041fed1
>    0x41fed1 <print_vectorlike+4293473313>:	callq  0x41cca5 <emacs_abort>
> (gdb) b *0x41fed1
> Breakpoint 6 at 0x41fed1: file /ironwood1/emacs-git/f30/bld/../../emacs/src/print.c, line 1824.
> (gdb) info line *0x41fed1
> Line 1824 of "/ironwood1/emacs-git/f30/bld/../../emacs/src/print.c"
>    starts at address 0x41fed1 <print_vectorlike+4293473313>
>    and ends at 0x5873b0 <print_unwind>.
> 
> These look okay to me too.  On Linux, I think we're lacking the minimal
> symbol which Eli is seeing on Windows.

Don't you see print_vectorlike.cold in the debug info, with objdump or
elfread?  If not, perhaps ELF binaries record cold sections in some
different way from PE-COFF.

I also see a lot of *.cold symbols with "nm -A" on the Emacs binary.
Do you?

Thanks.