From: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
To: Richard Sandiford <Richard.Sandiford@arm.com>
Cc: Wilco Dijkstra via Gcc-patches <gcc-patches@gcc.gnu.org>
Subject: Re: [PATCH] AArch64: Cleanup aarch64_classify_symbol
Date: Fri, 30 Apr 2021 12:11:36 +0000 [thread overview]
Message-ID: <VE1PR08MB5599A76E0843509011836951835E9@VE1PR08MB5599.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <mptr1is9n3o.fsf@arm.com>
Hi Richard,
> Hmm, OK. I guess it makes things more consistent in that sense
> (PIC vs. non-PIC). But on the other side it's making things less
> internally consistent for non-PIC, since we don't use the GOT for
> anything else there. I guess in principle there's a danger that a
> custom *-elf linker script might not bother to set up the .got properly,
> on the assumption that it shouldn't be needed.
The GOT is always used in executables (even an empty main function has
a non-zero .got and .got.plt section). When you need an indirection,
using an existing mechanism is better than doing something special.
For example if the weak reference is resolved to a local symbol, the
linker could remove the indirection.
Cheers,
Wilco
next prev parent reply other threads:[~2021-04-30 12:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-28 14:36 Wilco Dijkstra
2021-04-28 15:34 ` Richard Sandiford
2021-04-28 17:48 ` Wilco Dijkstra
2021-04-30 8:46 ` Richard Sandiford
2021-04-30 12:11 ` Wilco Dijkstra [this message]
2021-04-30 12:50 ` Richard Sandiford
2021-04-28 18:04 ` Andrew Pinski
2021-04-28 20:34 ` Wilco Dijkstra
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