From: "H.J. Lu" <hjl.tools@gmail.com>
To: Florian Weimer <fweimer@redhat.com>
Cc: gnu-gabi@sourceware.org,
IA32 System V Application Binary Interface
<ia32-abi@googlegroups.com>,
"x86-64-abi@googlegroups.com" <x86-64-abi@googlegroups.com>
Subject: Re: RFC: Update x86 psABI to support shadow stac
Date: Sun, 01 Jan 2017 00:00:00 -0000 [thread overview]
Message-ID: <CAMe9rOqEDh=xhGBOYaqek2LsV8=UxE9VB2UUEsRx5yozEKPrsw@mail.gmail.com> (raw)
In-Reply-To: <bcc0e16a-06bf-f906-9c24-777bd0230c83@redhat.com>
On Thu, Jun 22, 2017 at 5:51 AM, Florian Weimer <fweimer@redhat.com> wrote:
> On 06/21/2017 05:25 PM, H.J. Lu wrote:
>> GNU_PROPERTY_X86_FEATURE_1_SHSTK is set on output only if it is set on
>> all relocatable inputs, which means that the C library must be compiled
>> with SHSTK-enabled compiler.
>
> I don't think this is sufficiently detailed for an ABI specification.
> It needs to say what an SHSTK-enabled compiler does.
Compilers just need to make return address popped from shadow
stack match return address popped from normal stack.
--
H.J.
next prev parent reply other threads:[~2017-06-22 13:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-01 0:00 H.J. Lu
2017-01-01 0:00 ` Florian Weimer
2017-01-01 0:00 ` H.J. Lu [this message]
2017-01-01 0:00 ` Florian Weimer
2017-01-01 0:00 ` H.J. Lu
2017-01-01 0:00 ` Florian Weimer
2017-01-01 0:00 ` H.J. Lu
2017-01-01 0:00 ` Florian Weimer
2017-01-01 0:00 ` H.J. Lu
2017-01-01 0:00 ` Florian Weimer
2017-01-01 0:00 ` H.J. Lu
2017-01-01 0:00 ` Shanbhogue, Vedvyas
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