[PATCH][GCC][AArch64] Ensure that outgoing argument size is at least 8 bytes when alloca and stack-clash. [Patch (3/6)]

Tamar Christina Tamar.Christina@arm.com
Tue Oct 9 06:38:00 GMT 2018


Hi All,

I'm looking for permission to backport this patch to the GCC-8 branch
to fix PR86486.

OK for backport?

Thanks,
Tamar

> -----Original Message-----
> From: James Greenhalgh <james.greenhalgh@arm.com>
> Sent: Tuesday, August 7, 2018 17:18
> To: Tamar Christina <Tamar.Christina@arm.com>
> Cc: Jeff Law <law@redhat.com>; gcc-patches@gcc.gnu.org; nd
> <nd@arm.com>; Richard Earnshaw <Richard.Earnshaw@arm.com>; Marcus
> Shawcroft <Marcus.Shawcroft@arm.com>
> Subject: Re: [PATCH][GCC][AArch64] Ensure that outgoing argument size is at
> least 8 bytes when alloca and stack-clash. [Patch (3/6)]
> 
> On Tue, Aug 07, 2018 at 05:09:34AM -0500, Tamar Christina wrote:
> > Hi All,
> >
> > This is a re-spin to address review comments. No code change aside from a
> variable rename.
> >
> > Ok for trunk?
> 
> OK.
> 
> Thanks,
> James
> 
> > gcc/
> > 2018-08-07  Tamar Christina  <tamar.christina@arm.com>
> >
> > 	PR target/86486
> > 	* config/aarch64/aarch64.h
> (STACK_CLASH_MIN_BYTES_OUTGOING_ARGS,
> > 	STACK_DYNAMIC_OFFSET): New.
> > 	* config/aarch64/aarch64.c (aarch64_layout_frame):
> > 	Update outgoing args size.
> > 	(aarch64_stack_clash_protection_alloca_probe_range,
> > 	TARGET_STACK_CLASH_PROTECTION_ALLOCA_PROBE_RANGE):
> New.
> >
> > gcc/testsuite/
> > 2018-08-07  Tamar Christina  <tamar.christina@arm.com>
> >
> > 	PR target/86486
> > 	* gcc.target/aarch64/stack-check-alloca-1.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca-10.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca-2.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca-3.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca-4.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca-5.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca-6.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca-7.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca-8.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca-9.c: New.
> > 	* gcc.target/aarch64/stack-check-alloca.h: New.
> > 	* gcc.target/aarch64/stack-check-14.c: New.
> > 	* gcc.target/aarch64/stack-check-15.c: New.



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