Hi
I don't seem to have any luck building epiphany tools for either
epiphany-rtems4.12 or epiphany-elf on the master of binutils-gdb,
gcc, and newlib. I am posting the current "add rtems" patch for
posterity. It looks like epiphany-elf isn't supported by upstream
binutils yet but it is in gdb.
--joel
From 195ddfb96042cc934b9b29811c88adbcc6a3fa7a Mon Sep 17 00:00:00 2001
From: Joel Sherrill <j...@rtems.org>
Date: Sun, 20 Mar 2016 10:55:59 -0500
Subject: [PATCH] 2015-02-24 Hesham ALMatary <heshamelmat...@gmail.com>
* config.gcc: Add Epiphany RTEMS target.
* config/epiphany/rtems.h: New file.
* config/epiphany/t-rtems: Add new dummy epiphany/t-rtems file.
2015-02-24 Hesham ALMatary <heshamelmat...@gmail.com>
* config.host: Add Epiphany RTEMS target.
---
gcc/config.gcc | 12 +++++++++---
gcc/config/epiphany/epiphany.h | 2 ++
gcc/config/epiphany/rtems.h | 33 +++++++++++++++++++++++++++++++++
gcc/config/epiphany/t-rtems | 1 +
libgcc/config.host | 2 +-
5 files changed, 46 insertions(+), 4 deletions(-)
create mode 100644 gcc/config/epiphany/rtems.h
create mode 100644 gcc/config/epiphany/t-rtems
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 6722260..1844da8 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1201,13 +1201,19 @@ crisv32-*-linux* | cris-*-linux*)
;;
esac
;;
-epiphany-*-elf )
- tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file}"
- tmake_file="epiphany/t-epiphany"
+epiphany-*-elf | epiphany-*-rtems*)
+ tm_file="${tm_file} dbxelf.h elfos.h newlib-stdint.h"
+ tmake_file="${tmake_file} epiphany/t-epiphany"
extra_options="${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"
+ case ${target} in
+ epiphany-*-rtems*)
+ tm_file="${tm_file} epiphany/rtems.h rtems.h"
+ tmake_file="${tmake_file} epiphany/t-rtems"
+ ;;
+ esac
;;
fr30-*-elf)
tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file}"
diff --git a/gcc/config/epiphany/epiphany.h b/gcc/config/epiphany/epiphany.h
index 9e7ee50..289dc81 100644
--- a/gcc/config/epiphany/epiphany.h
+++ b/gcc/config/epiphany/epiphany.h
@@ -700,8 +700,10 @@ typedef struct GTY (()) machine_function
#define TEXT_SECTION_ASM_OP "\t.section .text"
#define DATA_SECTION_ASM_OP "\t.section .data"
+#if 0
#undef READONLY_DATA_SECTION_ASM_OP
#define READONLY_DATA_SECTION_ASM_OP "\t.section .rodata"
+#endif
#define BSS_SECTION_ASM_OP "\t.section .bss"
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
diff --git a/gcc/config/epiphany/t-rtems b/gcc/config/epiphany/t-rtems
new file mode 100644
index 0000000..d0c3826
--- /dev/null
+++ b/gcc/config/epiphany/t-rtems
@@ -0,0 +1 @@
+# Custom multilibs for RTEMS
diff --git a/libgcc/config.host b/libgcc/config.host
index b61a579..13588fa 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -471,7 +471,7 @@ cris-*-elf)
cris-*-linux* | crisv32-*-linux*)
tmake_file="$tmake_file cris/t-cris t-softfp-sfdf t-softfp cris/t-linux"
;;
-epiphany-*-elf*)
+epiphany-*-elf* | epiphany-*-rtems*)
tmake_file="epiphany/t-epiphany t-fdpbit epiphany/t-custom-eqsf"
extra_parts="$extra_parts crti.o crtint.o crtrunc.o crtm1reg-r43.o crtm1reg-r63.o crtn.o"
;;
--
1.8.3.1
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