Hi
I couldn't get gdb og gcc to build even for epiphany-elf but I did
include patch that I think is all that is needed for RTEMS.
I did manage to build binutils from their repo for both elf
and rtems variants.
At least it is a starting point. You can work with their
community to get their tools built as epiphany-elf and
then just change the target.
--joel
On 11/13/2014 12:22 PM, Hesham Moustafa wrote:
>
>
> On Thu Nov 13 2014 at 5:58:25 PM Joel Sherrill
> <joel.sherr...@oarcorp.com <mailto:joel.sherr...@oarcorp.com>> wrote:
>
>
>
> On November 13, 2014 11:56:32 AM CST, Hesham Moustafa
> <heshamelmat...@gmail.com <mailto:heshamelmat...@gmail.com>> wrote:
> >Hi,
> >
> >
> >I want to let you know that I found their main repos [1] Can I start
> >from there? Imitating what has been done with OpenRISC?
> >
>
> Basically. Except you only need their repos for binutils and gdb.
> We use GCC and Newlib from upstream.
>
> Great, I am waiting for these patches.
>
> I have binutils patches
>
> >[1] https://github.com/adapteva
> >
> >
> >Regards,
> >
> >Hesham
> >
> >On Thu Nov 13 2014 at 3:29:14 PM Hesham Moustafa
> ><heshamelmat...@gmail.com <mailto:heshamelmat...@gmail.com>> wrote:
> >
> >On Thu Nov 13 2014 at 2:59:33 PM Joel Sherrill
> ><joel.sherr...@oarcorp.com <mailto:joel.sherr...@oarcorp.com>> wrote:
> >
> >
> >On 11/13/2014 8:07 AM, Joel Sherrill wrote:
> >>
> >> On November 13, 2014 6:30:48 AM CST, Hesham Moustafa
> ><heshamelmat...@gmail.com <mailto:heshamelmat...@gmail.com>> wrote:
> >>> Hi all,
> >>>
> >>>
> >>> I want to ask about the status of RTEMS toolchain for Epiphany
> >>> architecture. I think Joel mentioned that there are some previous
> >>> support for it; and if yes, does the toolchain need some
> additional
> >>> work?
> >> To give you a quick answer, I emailed the people who did the port.
> >There apparently is a github repo with some of it and some is
> merged. I
> >will dig through the emails and post the proper links.
> >>
> >> One issue they mentioned was that the gdb port had many core/thread
> >support that made it more than a simple port.
> >From Jeremy Bennett:
> >
> >> piphany tool chain development runs on quite a tight budget,
> and its
> >> GDB implementation is quite complex (it has to pretend cores are
> >> threads, when they don't completely share an address space). So we
> >> haven't had the effort to devote to upstreaming. And we were
> >> reluctant to push the simulator upstream without a GDB
> implementation
> >> to go with it. You can of course access the code here:
> >>
> >> https://github.com/adapteva/epiphany-binutils-gdb
> >>
> >> Epiphany GDB is still in quite substantial flux, due to the need to
> >> support the Eclipse multicore visualizer with asynchronous and
> >> non-stop support.
> >The upstream gcc and newlib are OK. But since binutils and gdb are
> >now in a single repo, it will need to come from the github site until
> >it is merged upstream. And obviously patches just need to go upstream
> >to whereever the code is. :)
> >
> >Jeremy also encouraged you to openly discuss things on their forums.
> >He thought you would get good insight and advice there. And I don't
> >doubt that.
> >
> >Thank you, I will.
> >
> >If it is a relatively low volume place, I may track it. But my email
> >volume
> >is already high and I don't have time to poke around on a bulletin
> >board.
> >
> >> It will not have RTEMS as a target but that shouldn't be hard to
> >address once we know where the master binutils, GCC, Newlib, and gdb
> >are.
> >So do you want me to try to build a toolchain and get you some
> starting
> >patches?
> >
> >Sure that will definitely help as a starting point. And if you are so
> >busy, you can just drop me HOWTO instructions.
> >
> >> Then you are porting.
> >>
> >>> Regards,
> >>>
> >>> Hesham
> >> _______________________________________________
> >> devel mailing list
> >> devel@rtems.org <mailto:devel@rtems.org>
> >> http://lists.rtems.org/mailman/listinfo/devel
> >
> >--
> >Joel Sherrill, Ph.D. Director of Research & Development
> >joel.sherr...@oarcorp.com On-Line Applications Research
> >Ask me about RTEMS: a free RTOS Huntsville AL 35805
> >Support Available (256) 722-9985
>
--
Joel Sherrill, Ph.D. Director of Research & Development
joel.sherr...@oarcorp.com On-Line Applications Research
Ask me about RTEMS: a free RTOS Huntsville AL 35805
Support Available (256) 722-9985
From a65be6da99e754614ddbe2b57e82caa511c457fb Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherr...@oarcorp.com>
Date: Thu, 13 Nov 2014 10:26:23 -0600
Subject: [PATCH 1/2] bfd/config.bfd: Add epiphany-*-rtems*
2014-11-13 Joel Sherrill <joel.sherr...@oarcorp.com>
* config.bfd: Add epiphany-*-rtems* target
---
bfd/config.bfd | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/bfd/config.bfd b/bfd/config.bfd
index 6025f26..8b56eea 100644
--- a/bfd/config.bfd
+++ b/bfd/config.bfd
@@ -395,7 +395,7 @@ case "${targ}" in
targ_defvec=bfd_elf32_d30v_vec
;;
- epiphany-*-elf)
+ epiphany-*-elf | epiphany-*-rtems*)
targ_defvec=bfd_elf32_epiphany_vec
;;
--
1.9.3
From 264dfba15fdc77377ca25c959cbeacd0cee6f868 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherr...@oarcorp.com>
Date: Thu, 13 Nov 2014 12:45:07 -0600
Subject: [PATCH] GCC: Add epiphany-rtems target
2014-11-13 Joel Sherrill <joel.sherr...@oarcorp.com>
* config.gcc: Add epiphany-*-rtems* target.
* config/epiphany/rtems.h: New file.
---
gcc/config.gcc | 9 +++++++++
gcc/config/epiphany/rtems.h | 33 +++++++++++++++++++++++++++++++++
2 files changed, 42 insertions(+)
create mode 100644 gcc/config/epiphany/rtems.h
diff --git a/gcc/config.gcc b/gcc/config.gcc
index a6b37d8..9ee2a57 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1137,6 +1137,15 @@ crisv32-*-linux* | cris-*-linux*)
;;
esac
;;
+ tmake_file="${tmake_file} sparc/t-sparc sparc/t-rtems"
+epiphany-*-rtems* )
+ tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file} epiphany/rtems.h rtems.h"
+ tmake_file="epiphany/t-epiphany"
+ extra_options="${extra_options} fused-madd.opt"
+ extra_objs="$extra_objs mode-switch-use.o resolve-sw-modes.o"
+ tm_defines="${tm_defines} EPIPHANY_STACK_OFFSET=${with_stack_offset:-8}"
+ extra_headers="epiphany_intrinsics.h"
+ ;;
epiphany-*-elf )
tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file}"
tmake_file="epiphany/t-epiphany"
diff --git a/gcc/config/epiphany/rtems.h b/gcc/config/epiphany/rtems.h
new file mode 100644
index 0000000..c2cb4bd
--- /dev/null
+++ b/gcc/config/epiphany/rtems.h
@@ -0,0 +1,33 @@
+/* Definitions for rtems targeting a RTEMS using ELF.
+ Copyright (C) 2014 Free Software Foundation, Inc.
+ Contributed by Joel Sherrill (j...@oarcorp.com).
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+/* Target OS builtins. */
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define ("__rtems__"); \
+ builtin_define ("__USE_INIT_FINI__"); \
+ builtin_assert ("system=rtems"); \
+ } \
+ while (0)
+
+/* Use the default */
+#undef LINK_GCC_C_SEQUENCE_SPEC
--
1.9.3
From 3d63bd5a7de127dae5489e4d25f076dad05b7167 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherr...@oarcorp.com>
Date: Thu, 13 Nov 2014 12:29:38 -0600
Subject: [PATCH] gdb/configure.tgt: Add epiphany-rtems
2014-11-13 Joel Sherrill <joel.sherr...@oarcorp.com>
* configure.tgt: Add epiphany-rtems target.
---
gdb/configure.tgt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gdb/configure.tgt b/gdb/configure.tgt
index 90cefaa..8053043 100644
--- a/gdb/configure.tgt
+++ b/gdb/configure.tgt
@@ -133,7 +133,7 @@ cris*)
gdb_target_obs="cris-tdep.o solib-svr4.o"
;;
-epiphany-*-elf*)
+epiphany-*-elf* | epiphany-*-rtems*)
# Target: Adapteva EPIPHANY embedded system
gdb_target_obs="epiphany-tdep.o"
gdb_sim=../sim/epiphany/libsim.a
--
1.9.3
From 7d6a7d0f5776f1b56beac9996ebcf734451a556b Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherr...@oarcorp.com>
Date: Thu, 13 Nov 2014 10:27:47 -0600
Subject: [PATCH 2/2] ld/configure.tgt: Add epiphany-*-rtems*
2014-11-13 Joel Sherrill <joel.sherr...@oarcorp.com>
* configure.tgt: Add epiphany-*-rtems* target
---
ld/configure.tgt | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/ld/configure.tgt b/ld/configure.tgt
index 9adace1..a211534 100644
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -157,7 +157,8 @@ d30v-*-*) targ_emul=d30velf; targ_extra_emuls="d30v_e d30v_o"
;;
dlx-*-elf*) targ_emul=elf32_dlx
;;
-epiphany-*-elf) targ_emul=elf32epiphany
+epiphany-*-elf | epiphany-*-rtems*)
+ targ_emul=elf32epiphany
targ_extra_emuls="elf32epiphany_4x4"
;;
fido*-*-elf*) targ_emul=m68kelf ;;
--
1.9.3
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