On Fri, 21 Jun 2019 at 08:57, Jakub Jelinek wrote:
>
> Hi!
>
> The following patch adds exclusive scan support for simd, it is similar to
> the inclusive scan, just we need to swap the input and scan phases and
> use slightly different pattern at the start of the scan phase, so that it
> computes
On Sat, 1 Dec 2018 at 23:01, Marek Polacek wrote:
>
> Tested x86_64-linux, applying to trunk.
>
> 2018-12-01 Marek Polacek
>
> PR c++/83856
> * g++.dg/cpp1y/lambda-generic-83856.C: New test.
>
> diff --git gcc/testsuite/g++.dg/cpp1y/lambda-generic-83856.C
> gcc/testsuite/g++.dg
Ping?
The series started here:
https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01464.html
Thanks,
Christophe
On Mon, 26 Nov 2018 at 11:14, Christophe Lyon
wrote:
>
> Ping?
>
> Thanks
>
> On Fri, 16 Nov 2018 at 16:48, Christophe Lyon wrote:
> >
> > From:
On Mon, 3 Dec 2018 at 14:35, Richard Biener wrote:
>
> On Sat, Dec 1, 2018 at 12:07 AM Jeff Law wrote:
> >
> > On 11/29/18 12:26 PM, Wilco Dijkstra wrote:
> > > Fix PR64242 - the middle end expansion for long jmp updates the
> > > hard frame pointer before it reads the new stack pointer. This
>
On Mon, 3 Dec 2018 at 17:26, Jakub Jelinek wrote:
>
> Hi!
>
> Here is a fix for the testcase, so that it doesn't FAIL pretty much
> everywhere.
>
> On Fri, Nov 30, 2018 at 04:07:31PM -0700, Jeff Law wrote:
> > > PR middle-end/64242
> > > * gcc.c-torture/execute/pr64242.c: New test.
> > THa
On Mon, 3 Dec 2018 at 17:05, Marek Polacek wrote:
>
> On Mon, Dec 03, 2018 at 10:14:11AM +0100, Christophe Lyon wrote:
> > This new test fails on arm and other targets according to
> > gcc-testresults. On arm, I can see:
> > /gcc/testsuite/g++.dg/cpp1y/lambda-generic-8
Hi Richard,
On Mon, 3 Dec 2018 at 14:37, Richard Biener wrote:
>
>
> This fixes a missed optimization in EVRP by teaching the code
> figuring out conditional asserts about conversions that preserve
> the converted value.
>
> Bootstrapped and tested on x86_64-unknown-linux-gnu, applied to trunk
> s
On Tue, 4 Dec 2018 at 14:17, Richard Biener wrote:
>
> On Tue, 4 Dec 2018, Christophe Lyon wrote:
>
> > Hi Richard,
> > On Mon, 3 Dec 2018 at 14:37, Richard Biener wrote:
> > >
> > >
> > > This fixes a missed optimization in EVRP by teaching the c
On Thu, 6 Dec 2018 at 00:11, Jeff Law wrote:
>
> On 11/29/18 4:43 PM, Martin Sebor wrote:
> > On 11/29/18 4:07 PM, Jeff Law wrote:
> >> On 11/29/18 1:34 PM, Martin Sebor wrote:
> >>> On 11/16/2018 02:07 AM, Richard Biener wrote:
> On Fri, Nov 16, 2018 at 4:12 AM Martin Sebor wrote:
> >
>
Ping?
On 03/12/2018 10:19, Christophe Lyon wrote:
Ping?
The series started here:
https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01464.html
Thanks,
Christophe
On Mon, 26 Nov 2018 at 11:14, Christophe Lyon
wrote:
Ping?
Thanks
On Fri, 16 Nov 2018 at 16:48, Christophe Lyon wrote:
From
On Tue, 11 Dec 2018 at 16:52, Richard Sandiford
wrote:
>
> Dimitar Dimitrov writes:
> > On понеделник, 10 декември 2018 г. 11:21:53 EET Richard Sandiford wrote:
> >> Dimitar Dimitrov writes:
> >> > I have tested this fix on x86_64 host, and found no regression in the C
> >> > and C++ testsuites.
On Wed, 12 Dec 2018 at 10:42, Christophe Lyon
wrote:
>
> On Tue, 11 Dec 2018 at 16:52, Richard Sandiford
> wrote:
> >
> > Dimitar Dimitrov writes:
> > > On понеделник, 10 декември 2018 г. 11:21:53 EET Richard Sandiford wrote:
> > >> Dimitar Dimitrov
moved. Let me
> > check the original code that lead to the PR why it's clobbering sp
> > though.
> >
> > Best regards,
> >
> > Thomas
> > On Wed, 12 Dec 2018 at 09:43, Christophe Lyon
> > wrote:
> > >
> > > On Tue, 11 Dec 2018 at 1
On Wed, 12 Dec 2018 at 14:19, Christophe Lyon
wrote:
>
> On Wed, 12 Dec 2018 at 12:21, Thomas Preudhomme
> wrote:
> >
> > So my understanding is that the original code (CMSIS library) used to
> > clobber sp because the asm statement was actually changing the sp.
>
On Wed, 12 Dec 2018 at 17:13, Jonathan Wakely wrote:
>
> Ensure we don't try to instantiate __is_constructible_from,
> because there are two partial specializations that are equally good
> matches.
>
> PR libstdc++/80762
> * include/bits/fs_path.h (path::_Path): Use remove_cv_t and
On Thu, 13 Dec 2018 at 12:00, Jonathan Wakely wrote:
>
> On 13/12/18 08:56 +0100, Christophe Lyon wrote:
> >On Wed, 12 Dec 2018 at 17:13, Jonathan Wakely wrote:
> >>
> >> Ensure we don't try to instantiate __is_constructible_from,
> >> because th
Hi,
On Thu, 13 Dec 2018 at 19:14, Jeff Law wrote:
>
> On 12/12/18 4:18 PM, Martin Sebor wrote:
> > POSIX requires snprintf to fail with EOVERFLOW when the specified
> > bound exceeds INT_MAX. This requirement conflicts with the C
> > requirements on valid calls to the function and isn't universa
On Mon, 17 Dec 2018 at 12:47, Richard Sandiford
wrote:
>
> Dimitar Dimitrov writes:
> > On Sun, Dec 16 2018 at 14:36:26 EET Bernd Edlinger wrote:
> >> Hi,
> >>
> >> if I understood that right, then clobbering sp is and has always been
> >> ignored.
>
> PR77904 was about the clobber not being igno
On Mon, 17 Dec 2018 at 14:35, Richard Sandiford
wrote:
>
> Christophe Lyon writes:
> > On Mon, 17 Dec 2018 at 12:47, Richard Sandiford
> > wrote:
> >>
> >> Dimitar Dimitrov writes:
> >> > On Sun, Dec 16 2018 at 14:36:26 EET Bernd Edlinger wrote:
On Sat, 15 Dec 2018 at 23:11, Jason Merrill wrote:
>
> On Fri, Dec 14, 2018 at 6:05 PM Alexandre Oliva wrote:
> >
> > On Dec 14, 2018, Jason Merrill wrote:
> >
> > > Let's move the initialization of "fields" inside the 'then' block here
> > > with the initialization of "cvquals", rather than cle
On Tue, 18 Dec 2018 at 16:51, Jonathan Wakely wrote:
>
> The resolution for LWG 2936 defines the comparison more precisely, which
> this patch implements. The patch also defines comparisons with strings
> to work without constructing a temporary path object (so avoids any
> memory allocations).
>
On Thu, 20 Dec 2018 at 01:04, Alexandre Oliva wrote:
>
> Christophe,
>
> Thanks again for the report. This was quite an adventure to figure
> out ;-) See below.
>
Glad I've helped. I wouldn't have been able to do the analysis :)
>
> [PR88146] avoid diagnostics diffs if cdtor_returns_this
>
>
Hi,
Ping^4 ?
Thanks,
Christophe
On Tue, 11 Dec 2018 at 11:27, Christophe Lyon wrote:
>
> Ping?
>
>
> On 03/12/2018 10:19, Christophe Lyon wrote:
> > Ping?
> >
> > The series started here:
> > https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01464.
Hi Jonathan
On Sun, 6 Jan 2019 at 23:37, Jonathan Wakely wrote:
>
> Move std::filesystem directory iterators and operations from
> libstdc++fs.a to main libstdc++ library. These components have many
> dependencies on OS support, which is not available on all targets. Some
> additional autoconf ch
On Mon, 7 Jan 2019 at 13:39, Jonathan Wakely wrote:
>
> On 07/01/19 09:48 +, Jonathan Wakely wrote:
> >On 07/01/19 10:24 +0100, Christophe Lyon wrote:
> >>Hi Jonathan
> >>
> >>On Sun, 6 Jan 2019 at 23:37, Jonathan Wakely wrote:
> >>>
Hi,
This small patch adds a short description of --with-multilib-list for aarch64.
OK?
Thanks,
Christophe
2019-01-07 Christophe Lyon
PR target/85596
* doc/install.texi (with-multilib-list): Document for aarch64.
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index
On Sun, 6 Jan 2019 at 22:45, Jonathan Wakely wrote:
>
> On 05/01/19 20:03 +, Jonathan Wakely wrote:
> >In C++17 the clock used for filesystem::file_time_type is unspecified,
> >allowing it to be chrono::system_clock. The C++2a draft requires it to
> >be a distinct type, with additional member
On Mon, 7 Jan 2019 at 15:14, Christophe Lyon wrote:
>
> On Mon, 7 Jan 2019 at 13:39, Jonathan Wakely wrote:
> >
> > On 07/01/19 09:48 +, Jonathan Wakely wrote:
> > >On 07/01/19 10:24 +0100, Christophe Lyon wrote:
> > >>Hi Jonathan
> > >>
On Mon, 7 Jan 2019 at 18:08, Paolo Carlini wrote:
>
> Hi,
>
> should be straightforward material. Tested x86_64-linux, as usual.
>
> Thanks, Paolo.
>
> /
>
Hi,
The new g++.dg/diagnostic/thread1.C passes on aarch64, but fails on arm:
FAIL: g++.dg/diagnostic/thread1.C -std=c++
On Mon, 29 Jul 2019 at 18:49, Wilco Dijkstra wrote:
>
> Currently the Arm backend selects the alternative sched pressure algorithm.
> The issue is that this doesn't take register pressure into account, and so
> it causes significant additional spilling on Arm where there are only 14
> allocatable
Hi,
Thanks for the useful feedback.
On Tue, 16 Jul 2019 at 11:54, Richard Sandiford
wrote:
>
> Thanks for doing this in a generic way.
>
> Christophe Lyon writes:
> > @@ -2224,6 +2234,50 @@ handle_weak_attribute (tree *node, tree name,
> >return NULL_TREE;
>
On Tue, 16 Jul 2019 at 14:42, Kyrill Tkachov
wrote:
>
>
> On 7/16/19 12:18 PM, Kyrill Tkachov wrote:
> > Hi Christophe
> >
> > On 5/15/19 1:39 PM, Christophe Lyon wrote:
> > > In FDPIC mode, the trampoline generated to support pointers
On Tue, 16 Jul 2019 at 12:34, Richard Sandiford
wrote:
>
> Christophe Lyon writes:
> > On 22/05/2019 10:45, Christophe Lyon wrote:
> >> On Wed, 22 May 2019 at 10:39, Szabolcs Nagy wrote:
> >>>
> >>> On 21/05/2019 16:28, Christophe Lyon wr
Ping?
On Tue, 30 Jul 2019 at 15:35, Christophe Lyon
wrote:
>
> Hi,
>
> Thanks for the useful feedback.
>
>
> On Tue, 16 Jul 2019 at 11:54, Richard Sandiford
> wrote:
> >
> > Thanks for doing this in a generic way.
> >
> > Ch
On Wed, 14 Aug 2019 at 14:14, Richard Sandiford
wrote:
>
> Sorry for the slow response, I'd missed that there was an updated patch...
>
> Christophe Lyon writes:
> > 2019-07-04 Christophe Lyon
> >
> > * lib/target-supports.exp (check_effective
-target noinit */
(missing closing brace)
Could it explain why it's failing on x86_64 ?
> Thanks,
> Tamar
>
> -Original Message-
> From: gcc-patches-ow...@gcc.gnu.org On Behalf
> Of Christophe Lyon
> Sent: Wednesday, August 14, 2019 2:18 PM
> To: Christophe
On Wed, 14 Aug 2019 at 19:07, Christophe Lyon
wrote:
>
> On Wed, 14 Aug 2019 at 17:59, Tamar Christina wrote:
> >
> > Hi Christoph,
> >
> > The noinit testcase is currently failing on x86_64.
> >
> > Is the test supposed to be running there?
> &
On 16/07/2019 13:58, Richard Sandiford wrote:
Christophe Lyon writes:
The FDPIC register is hard-coded to r9, as defined in the ABI.
We have to disable tailcall optimizations if we don't know if the
target function is in the same module. If not, we have to set r9 to
the value associated
Hi,
The arm/cmse/cmse-9.c test was missing quotes in the expected warning messages.
Fix as obvious with r274793.
Christophe
2019-08-21 Christophe Lyon
* gcc.target/arm/cmse/cmse-9.c: Add quotes to expected
warning messages.
Index: gcc/testsuite/gcc.target/arm/cmse/cmse-9.c
On Thu, 22 Aug 2019 at 14:03, Kyrill Tkachov
wrote:
>
> Hi Wilco,
>
> On 7/19/19 12:30 PM, Wilco Dijkstra wrote:
> >
> > Cleanup the logical DImode operations since the current implementation
> > is way
> > too complicated. Thumb-1, Thumb-2, VFP/Neon and iwMMXt all work
> > differently,
> > resul
On Fri, 23 Aug 2019 at 04:14, Jeff Law wrote:
>
> On 8/12/19 4:09 PM, Martin Sebor wrote:
>
> >
> > gcc-83431.diff
> >
> > PR tree-optimization/83431 - -Wformat-truncation may incorrectly report
> > truncation
> >
> > gcc/ChangeLog:
> >
> > PR c++/83431
> > * gimple-ssa-sprintf.c (pas
On Wed, 28 Aug 2019 at 11:42, Kyrill Tkachov
wrote:
>
>
> On 8/28/19 10:38 AM, Bernd Edlinger wrote:
> > On 8/27/19 11:25 AM, Kyrill Tkachov wrote:
> >> Hi Bernd,
> >>
> >> On 8/15/19 8:47 PM, Bernd Edlinger wrote:
> >>> Hi,
> >>>
> >>> this is the split out part from the "Fix not 8-byte aligned l
On Thu, 29 Aug 2019 at 10:58, Kyrill Tkachov
wrote:
>
> Hi Bernd,
>
> On 8/28/19 10:36 PM, Bernd Edlinger wrote:
> > On 8/28/19 2:07 PM, Christophe Lyon wrote:
> >> Hi,
> >>
> >> This patch causes an ICE when building libgcc's unwind-arm.o
> &
Hi,
On 15/05/2019 14:39, Christophe Lyon wrote:
Hello,
This patch series implements the GCC contribution of the FDPIC ABI for
ARM targets.
This ABI enables to run Linux on ARM MMU-less cores and supports
shared libraries to reduce the memory footprint.
Without MMU, text and data segments
On 16/07/2019 12:11, Richard Sandiford wrote:
[This isn't really something that should be reviewed under global
reviewership, but if it's either that or nothing, I'll do it anyway...]
Christophe Lyon writes:
2019-XX-XX Christophe Lyon
Mickaël Guêné
gcc/
On 12/07/2019 08:49, Richard Sandiford wrote:
Christophe Lyon writes:
The new arm-uclinuxfdpiceabi target behaves pretty much like
arm-linux-gnueabi. In order the enable the same set of features, we
have to update several configure scripts that generally match targets
like *-*-linux*: in most
On 16/07/2019 12:34, Richard Sandiford wrote:
Christophe Lyon writes:
On 22/05/2019 10:45, Christophe Lyon wrote:
On Wed, 22 May 2019 at 10:39, Szabolcs Nagy wrote:
On 21/05/2019 16:28, Christophe Lyon wrote:
--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
@@ -89,7
On 16/07/2019 13:58, Richard Sandiford wrote:
Christophe Lyon writes:
The FDPIC register is hard-coded to r9, as defined in the ABI.
We have to disable tailcall optimizations if we don't know if the
target function is in the same module. If not, we have to set r9 to
the value associated
On 12/07/2019 08:06, Richard Sandiford wrote:
Christophe Lyon writes:
In FDPIC, we need to make sure __do_global_dtors_aux and frame_dummy
are referenced by their address, not by pointers to the function
descriptors.
2019-XX-XX Christophe Lyon
Mickaël Guêné
* libgcc
On 31/07/2019 16:44, Christophe Lyon wrote:
On Tue, 16 Jul 2019 at 14:42, Kyrill Tkachov
wrote:
On 7/16/19 12:18 PM, Kyrill Tkachov wrote:
Hi Christophe
On 5/15/19 1:39 PM, Christophe Lyon wrote:
In FDPIC mode, the trampoline generated to support pointers to nested
functions looks like
Here is an updated version that makes use of the helper
gen_restore_pic_register_after_call
Christophe
On 15/05/2019 14:39, Christophe Lyon wrote:
We call __aeabi_read_tp() to get the thread pointer. Since this is a
function call, we have to restore the FDPIC register afterwards.
2019-XX-XX
On 29/08/2019 15:57, Christophe Lyon wrote:
Hi,
On 15/05/2019 14:39, Christophe Lyon wrote:
Hello,
This patch series implements the GCC contribution of the FDPIC ABI for
ARM targets.
This ABI enables to run Linux on ARM MMU-less cores and supports
shared libraries to reduce the memory
On Fri, 30 Aug 2019 at 11:00, Richard Sandiford
wrote:
>
> Christophe Lyon writes:
> > @@ -785,7 +785,7 @@ case ${target} in
> >esac
> >tmake_file="t-slibgcc"
> >case $target in
> > -*-*-linux* | frv-*-*linux* | *-*-kfreebsd*-gnu | *-
On Thu, 29 Aug 2019 at 23:26, Bernd Edlinger wrote:
>
> On 8/29/19 11:08 AM, Christophe Lyon wrote:
> > On Thu, 29 Aug 2019 at 10:58, Kyrill Tkachov
> > wrote:
> >>
> >> Hi Bernd,
> >>
> >> On 8/28/19 10:36 PM, Bernd Edlinger wrote:
>
On Fri, 30 Aug 2019 at 16:49, Richard Sandiford
wrote:
>
> Christophe Lyon writes:
> > On Fri, 30 Aug 2019 at 11:00, Richard Sandiford
> > wrote:
> >>
> >> Christophe Lyon writes:
> >> > @@ -785,7 +785,7 @@ case ${target} in
> >>
On Mon, 2 Sep 2019 at 18:12, Richard Sandiford
wrote:
>
> Sorry for the slow reply.
>
> Christophe Lyon writes:
> > On 16/07/2019 13:58, Richard Sandiford wrote:
> >> Christophe Lyon writes:
> >>> +(define_insn "*restore_pic_register_after_call"
On Tue, 3 Sep 2019 at 10:40, Richard Sandiford
wrote:
>
> Christophe Lyon writes:
> > @@ -3485,6 +3485,14 @@ arm_option_override (void)
> >if (flag_pic && TARGET_VXWORKS_RTP)
> > arm_pic_register = 9;
> >
> > + /* If in FDPIC mode then fo
On Wed, 4 Sep 2019 at 16:16, Kyrill Tkachov wrote:
>
> Hi Christophe,
>
> On 5/15/19 1:39 PM, Christophe Lyon wrote:
> > Support additional relocations: TLS_GD32_FDPIC, TLS_LDM32_FDPIC, and
> > TLS_IE32_FDPIC.
> >
> > We do not support the GNU2 TLS dialect.
On Thu, 29 Aug 2019 at 17:32, Kyrill Tkachov
wrote:
>
> Hi Christophe,
>
> On 5/15/19 1:39 PM, Christophe Lyon wrote:
> > Without this, when we are unwinding across a signal frame we can jump
> > to an even address which leads to an exception.
&
Sorry, I forgot again to cc: Ian.
Thanks,
Christophe
On Thu, 5 Sep 2019 at 10:30, Christophe Lyon wrote:
>
> On Thu, 29 Aug 2019 at 17:32, Kyrill Tkachov
> wrote:
> >
> > Hi Christophe,
> >
> > On 5/15/19 1:39 PM, Christophe Lyon wrote:
> > > Wi
On Fri, 19 Jul 2019 at 11:00, Kyrill Tkachov
wrote:
>
>
> On 5/15/19 1:39 PM, Christophe Lyon wrote:
> > Since FDPIC currently supports arm and thumb-2 modes only, these tests
> > fail because they enforce an architecture version that doesn't match
> > these
On Fri, 6 Sep 2019 at 10:28, Kyrill Tkachov wrote:
>
>
> On 9/6/19 9:01 AM, Christophe Lyon wrote:
> > On Fri, 19 Jul 2019 at 11:00, Kyrill Tkachov
> > wrote:
> >>
> >> On 5/15/19 1:39 PM, Christophe Lyon wrote:
> >>> Since FDPIC current
On Fri, 6 Sep 2019 at 11:09, Christophe Lyon wrote:
>
> On Fri, 6 Sep 2019 at 10:28, Kyrill Tkachov
> wrote:
> >
> >
> > On 9/6/19 9:01 AM, Christophe Lyon wrote:
> > > On Fri, 19 Jul 2019 at 11:00, Kyrill Tkachov
> > > wrote:
> >
On Fri, 6 Sep 2019 at 19:43, Christophe Lyon wrote:
>
> On Fri, 6 Sep 2019 at 11:09, Christophe Lyon
> wrote:
> >
> > On Fri, 6 Sep 2019 at 10:28, Kyrill Tkachov
> > wrote:
> > >
> > >
> > > On 9/6/19 9:01 AM, Christophe Lyon wrote
On Wed, 4 Sep 2019 at 22:03, Christophe Lyon wrote:
>
> On Wed, 4 Sep 2019 at 16:16, Kyrill Tkachov
> wrote:
> >
> > Hi Christophe,
> >
> > On 5/15/19 1:39 PM, Christophe Lyon wrote:
> > > Support additional relocations: TLS_GD32_FDPIC, TLS_LDM32_FDPIC
On Thu, 5 Sep 2019 at 11:03, Kyrill Tkachov wrote:
>
> Hi Christophe,
>
> On 9/5/19 9:30 AM, Christophe Lyon wrote:
> > On Thu, 29 Aug 2019 at 17:32, Kyrill Tkachov
> > wrote:
> >> Hi Christophe,
> >>
> >> On 5/15/19 1:39 PM, Christophe Ly
On Thu, 5 Sep 2019 at 11:52, Arnaud Charlet wrote:
>
> > > Can someone please remind me in which repository I can find the GCC
> > > prerequisites doc sources?
> >
> > Answering my own question: found it under gcc/doc/install.texi
> >
> > Working on it...
>
> Just installed the following change on
On Mon, 9 Sep 2019 at 17:18, Arnaud Charlet wrote:
>
> > > Just installed the following change on trunk, thanks again for your
> > > feedback!
> > >
> > > 2019-09-05 Arnaud Charlet
> > >
> > > * doc/install.texi: Update and clarify requirements to build GNAT.
> > >
> > Hi Arnaud,
> >
>
3a06
[6]
https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=13c46fbc1e5a021f2b9ed32d83aecc93ae5e655d
Christophe Lyon (24):
[ARM] FDPIC: Add -mfdpic option support
[ARM] FDPIC: Handle arm*-*-uclinuxfdpiceabi in configure scripts
[ARM] FDPIC: Force FDPIC related options unless -mno-fdpic is pro
From: Christophe Lyon
2019-XX-XX Christophe Lyon
Mickaël Guêné
gcc/
* config/arm/arm.opt: Add -mfdpic option.
* doc/invoke.texi: Add documentation for -mfdpic.
Change-Id: I05b98d6ae87c2b3fc04dd7fba415c730accdf33e
diff --git a/gcc/config/arm/arm.opt b/gcc
From: Christophe Lyon
The new arm-uclinuxfdpiceabi target behaves pretty much like
arm-linux-gnueabi. In order to enable the same set of features, we
have to update several configure scripts that generally match targets
like *-*-linux*: in most places, we add *-uclinux* where there is
already
From: Christophe Lyon
In FDPIC mode, we set -fPIE unless the user provides -fno-PIE, -fpie,
-fPIC or -fpic: indeed FDPIC code is PIC, but we want to generate code
for executables rather than shared libraries by default.
We also make sure to use the --fdpic assembler option, and select the
From: Christophe Lyon
The FDPIC register is hard-coded to r9, as defined in the ABI.
We have to disable tailcall optimizations if we don't know if the
target function is in the same module. If not, we have to set r9 to
the value associated with the target module.
When generating a s
From: Christophe Lyon
In FDPIC, we need to make sure __do_global_dtors_aux and frame_dummy
are referenced by their address, not by pointers to the function
descriptors.
2019-XX-XX Christophe Lyon
Mickaël Guêné
libgcc/
* libgcc/crtstuff.c: Add support for FDPIC
From: Christophe Lyon
The main difference with existing support is that function addresses
are function descriptor addresses instead. This means that all code
dealing with function pointers now has to cope with function
descriptors instead.
For the same reason, Linux kernel helpers can no
From: Christophe Lyon
2019-XX-XX Christophe Lyon
Mickaël Guêné
gcc/
* config/arm/arm.h (PIC_REGISTER_MAY_NEED_SAVING): New helper.
* config/arm/arm.c (arm_compute_save_reg0_reg12_mask): Handle
FDPIC.
Change-Id
From: Christophe Lyon
Use local binding rules to decide whether we can use GOTOFFFUNCDESC to
compute the function address.
2019-XX-XX Christophe Lyon
Mickaël Guêné
gcc/
* config/arm/arm.c (arm_fdpic_local_funcdesc_p): New function.
(legitimize_pic_address
From: Christophe Lyon
In FDPIC mode, the trampoline generated to support pointers to nested
functions looks like:
.wordtrampoline address
.wordtrampoline GOT address
ldr r12, [pc, #8]
ldr r9, [pc, #8]
ldr
From: Christophe Lyon
Support additional relocations: TLS_GD32_FDPIC, TLS_LDM32_FDPIC, and
TLS_IE32_FDPIC.
We do not support the GNU2 TLS dialect.
2019-XX-XX Christophe Lyon
Mickaël Guêné
gcc/
* config/arm/arm.c (tls_reloc): Add TLS_GD32_FDPIC
From: Christophe Lyon
2019-XX-XX Christophe Lyon
Mickaël Guêné
libgcc/
* unwind-arm-common.inc (ARM_SET_R7_RT_SIGRETURN)
(THUMB2_SET_R7_RT_SIGRETURN, FDPIC_LDR_R12_WITH_FUNCDESC)
(FDPIC_LDR_R9_WITH_GOT, FDPIC_LDR_PC_WITH_RESTORER
From: Christophe Lyon
We call __aeabi_read_tp() to get the thread pointer. Since this is a
function call, we have to restore the FDPIC register afterwards.
2019-XX-XX Christophe Lyon
Mickaël Guêné
gcc/
* config/arm/arm.c (arm_load_tp): Add FDPIC support
From: Christophe Lyon
Without this, when we are unwinding across a signal frame we can jump
to an even address which leads to an exception.
This is needed in __gnu_persnality_sigframe_fdpic() when restoring the
PC from the signal frame since the PC saved by the kernel has the LSB
bit set to
From: Christophe Lyon
Several tests cannot work on ARM-FDPIC for various reasons: skip them,
or skip some directives.
gcc.dg/20020312-2.c: Skip since it forces -fno-pic.
gcc.target/arm/:
* Skip since r9 is clobbered by assembly code:
20051215-1.c
mmx-1.c
pr61948.c
pr77933-1.c
pr77933
From: Christophe Lyon
In FDPIC mode, r9 is saved in addition to other registers, so update
the expected patterns accordingly.
2019-XX-XX Christophe Lyon
Mickaël Guêné
* gcc/testsuite/
* gcc.target/arm/interrupt-1.c: Add scan-assembler pattern for
arm
From: Christophe Lyon
Some tests fail on arm*-*-uclinuxfdpiceabi because it generates PIC
code and they don't support it: skip them. They also fail on
arm*-linux* when forcing -fPIC.
2019-XX-XX Christophe Lyon
gcc/testsuite/
* gcc.target/arm/eliminate.c: Accept only n
From: Christophe Lyon
Add *-*-uclinux* to tests that work on this target.
2019-XX-XX Christophe Lyon
gcc/testsuite/
* g++.dg/abi/forced.C: Add *-*-uclinux*.
* g++.dg/abi/guard2.C: Likewise.
* g++.dg/ext/cleanup-10.C: Likewise.
* g++.dg/ext/cleanup-11
From: Christophe Lyon
Some tests have the "nonpic" guard, but pass on
arm*-*-uclinuxfdpiceabi because it is in PIE mode by default. Rather
than adding this target to all these tests, add the "pie_enabled"
effective target.
2019-XX-XX Christophe Lyon
gcc/testsui
From: Christophe Lyon
uclibc defines bswap_32, so use a different name in this test.
2019-XX-XX Christophe Lyon
gcc/testsuite/
* gcc.target/arm/pr43698.c (bswap_32): Rename as my_bswap_32.
Change-Id: I2591bd911030814331cabf97ee5cf6cf8124b4f3
diff --git a/gcc/testsuite
From: Christophe Lyon
Since FDPIC currently supports arm and thumb-2 modes only, these tests
fail because they enforce an architecture version that doesn't match
these restrictions.
This patch introduces new values for the arm_arch effective-target
(v4t_thumb, v5t_thumb, v5te_thumb, v6_
From: Christophe Lyon
The recent stack_protect_combined_set_insn and
stack_protect_combined_test_insn force recomputing of GOT base, but
need to take into account that in FDPIC mode, the PIC register is
fixed by the ABI (r9).
2019-XX-XX Christophe Lyon
gcc/
* config/arm
From: Christophe Lyon
Since FDPIC does not support -static, skip the related tests.
2019-XX-XX Christophe Lyon
gcc/testsuite/
* lib/target-supports.exp (check_effective_target_static): Disable
for ARM FDPIC target.
Change-Id
From: Christophe Lyon
The ldaddr macro in sjlj.S needs to be updated to support the FDPIC
model.
2019-XX-XX Christophe Lyon
libitm/
* config/arm/sjlj.S (ldaddr): Add FDPIC support.
Change-Id: Ieb2c6613363341d109c3500af0575b133b17407d
diff --git a/libitm/config/arm/sjlj.S b
From: Christophe Lyon
2019-XX-XX Christophe Lyon
libstdc++-v3/
* acinclude.m4: Handle uclinux*.
* configure: Regenerate.
* configure.host: Handle uclinux*
Change-Id: Ia1b53693625e4153a090fcfc925a4d605bc98e59
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc
On 10/09/2019 12:17, Arnaud Charlet wrote:
It seems there's a problem with this patch:
/snapshots/gcc.git~master/gcc/doc/install.texi:2730: @ref reference to
nonexistent node `GNAT-prerequisite'
Makefile:3300: recipe for target
'/builds/armv8l-unknown-linux-gnueabihf/armv8l-unknown-linux-gnueabih
Hi Kyrill,
I didn't commit this patch yet: are you OK with it?
Thanks,
Christophe
On Mon, 9 Sep 2019 at 17:52, Christophe Lyon wrote:
> From: Christophe Lyon
>
> Since FDPIC currently supports arm and thumb-2 modes only, these tests
> fail because they enforce an architec
via attributes (either
in the source code, or via -mflip-thumb).
This patch adds the same error message when trying to apply the
"thumb" attribute and the target does not support Thumb-2 (only if we
are in FDPIC mode, of course).
OK?
Thanks,
Christophe
gcc/ChangeLog:
2019-09-16 Chris
On 17/09/2019 13:38, Wilco Dijkstra wrote:
Hi Christophe,
Can you explain this in more detail - it doesn't make sense to me to force the
Thumb bit during unwinding since it should already be correct, even on a
Thumb-only CPU. Perhaps the kernel code that pushes an incorrect address on
the stack
Hi,
As Kyrill suggested, here is a patch to mention the new FDPIC ABI
support for arm.
OK?
Thanks,
Christophe
Index: changes.html
===
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-10/changes.html,v
retrieving revision 1.14
diff -r1.14 chang
On Tue, 17 Sep 2019 at 17:40, Kyrill Tkachov
wrote:
>
> Hi Christophe,
>
> On 9/17/19 4:38 PM, Christophe Lyon wrote:
>
> Hi,
>
> As Kyrill suggested, here is a patch to mention the new FDPIC ABI
> support for arm.
> OK?
>
> Thanks,
>
> Christop
On Tue, 17 Sep 2019 at 17:54, Kyrill Tkachov
wrote:
>
>
> On 9/17/19 4:52 PM, Christophe Lyon wrote:
>
> On Tue, 17 Sep 2019 at 17:40, Kyrill Tkachov
> wrote:
> >
> > Hi Christophe,
> >
> > On 9/17/19 4:38 PM, Christophe Lyon wrote:
> >
> &g
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