Add POWER10 support for hashst[p] and hashchk[p] operations. When
the -mrop-protect option is selected, any function that loads the link
register from memory before returning must have protection in the
prologue and epilogue to ensure the link register save location has
not been compromised. If
2021-03-25 Bill Schmidt
gcc/testsuite/
* gcc.target/powerpc/rop-1.c: New.
* gcc.target/powerpc/rop-2.c: New.
* gcc.target/powerpc/rop-3.c: New.
* gcc.target/powerpc/rop-4.c: New.
* gcc.target/powerpc/rop-5.c: New.
---
Insert the hashst and hashchk instructions when -mrop-protect has been
selected. The encrypted save slot for ROP mitigation is placed
between the parameter save area and the alloca space (if any;
otherwise the local variable space).
Note that ROP-mitigation instructions are currently only
2021-03-25 Bill Schmidt
gcc/
* config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define
__ROP_PROTECT__ if -mrop-protect is selected.
---
gcc/config/rs6000/rs6000-c.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-c.c
2021-03-25 Bill Schmidt
gcc/
* config/rs6000/rs6000.c (rs6000_option_override_internal):
Disable shrink wrap when inserting ROP-protect instructions.
* config/rs6000/rs6000.opt (mrop-protect): New option.
(mprivileged): Likewise.
* doc/invoke.texi:
On Fri, Apr 23, 2021 at 09:12:10AM +0200, Richard Biener wrote:
> On Fri, Apr 23, 2021 at 1:35 AM H.J. Lu via Gcc-patches
> wrote:
> >
> > For op_by_pieces operations between two areas of memory on non-strict
> > alignment target, add -foverlap-op-by-pieces=[off|on|max-memset] to
> > generate
From: Zack Weinberg
> Sent: 25 April 2021 20:17
>
> On Sat, Apr 24, 2021 at 4:43 PM David Laight via Libc-alpha
> wrote:
> > From: Alexei Starovoitov
> > > On Fri, Apr 23, 2021 at 4:15 PM Alejandro Colomar
> > > wrote:
> ...
> > > > Some pages also document attributes, using GNU syntax
> > > >
On Sat, Apr 24, 2021 at 4:43 PM David Laight via Libc-alpha
wrote:
> From: Alexei Starovoitov
> > On Fri, Apr 23, 2021 at 4:15 PM Alejandro Colomar
> > wrote:
...
> > > Some pages also document attributes, using GNU syntax
> > > '__attribute__((xxx))'. Update those to use the shorter and more
On Sun, Apr 25, 2021 at 12:52 PM Alexei Starovoitov via Libc-alpha
wrote:
> On Sat, Apr 24, 2021 at 10:56 AM Alejandro Colomar (man-pages)
> wrote:
> >
> > Hello Alexei,
> >
> > On 4/24/21 1:20 AM, Alexei Starovoitov wrote:
> > > Nack.
> > > The man page should describe the kernel api the way it
On Sat, Apr 24, 2021 at 10:56 AM Alejandro Colomar (man-pages)
wrote:
>
> Hello Alexei,
>
> On 4/24/21 1:20 AM, Alexei Starovoitov wrote:
> > Nack.
> > The man page should describe the kernel api the way it is in .h file.
>
> Why?
Because man page must describe the linux uapi headers the way
Hi José!
The fix is fine.
Note however that the testcase will pass even without the fix because you
haven't included the
! { dg-options "-fcheck=pointer" }.
In fact, I suggest that you use the version of the tescase that I have
attached that does not run but counts the number of occurrences of
> Thank you for a quick reply.
> There's an updated version of the patch.
The Ada part is OK now, thanks.
On 4/23/21 6:58 PM, Segher Boessenkool wrote:
On Fri, Apr 23, 2021 at 06:24:07PM -0400, Michael Meissner wrote:
On Thu, Apr 22, 2021 at 05:56:32PM -0500, Segher Boessenkool wrote:
As Will says, it looks like the ELFv2 version has the same bug. Please
fix that the same way.
Yes it has the
On Fri, Apr 23, 2021 at 5:13 PM Jakub Jelinek wrote:
>
> On Fri, Apr 23, 2021 at 12:53:58PM +0800, Hongtao Liu via Gcc-patches wrote:
> > + if (!CONST_INT_P (er))
> > + return 0;
> > + ei = INTVAL (er);
> > + if (i < nelt2 && ei != i)
> > + return 0;
> > + if (i >=
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