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Date: Sun, 11 Oct 2015 18:29:00 -0000
Message-ID: <CAKOQZ8wgQ4uvoQLf6JVpBzGZHAeQCDLxMWE=M-hpW3GSDu2pww@mail.gmail.com>
Subject: Re: [PATCH] PR66870 PowerPC64 Enable gold linker with split stack
From: Ian Lance Taylor <iant@golang.org>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Alan Modra <amodra@gmail.com>, David Edelsohn <dje.gcc@gmail.com>, 	"Lynn A. Boger" <laboger@linux.vnet.ibm.com>, Matthias Klose <doko@ubuntu.com>, 	gcc-patches <gcc-patches@gcc.gnu.org>
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On Sun, Oct 11, 2015 at 7:43 AM, Andreas Schwab <schwab@linux-m68k.org> wrote
>
> Please remind me why this logic isn't implemented as a target hook.
>
> supports_split_stack = TARGET_CAN_SPLIT_STACK;
>
> /* rs6000.h */
> #define TARGET_CAN_SPLIT_STACK TARGET_64BIT

There is a target hook for split stack support in
gcc/common/common-target.def.  The PPC version of it is in
gcc/common/config/rs6000/rs6000-common.c.

But the issue here is that we need access from the gccgo driver
program.  Can the driver program call the common target hooks?

Ian