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[Patch] ARM EABI support for RTEMS
- From: Sebastian Huber <sebastian dot huber at embedded-brains dot de>
- To: gcc-patches at gcc dot gnu dot org
- Date: Fri, 04 Nov 2011 10:38:49 +0100
- Subject: [Patch] ARM EABI support for RTEMS
Hello,
please have a look at the attached patch. It is intended for inclusion in the
GCC 4.7 branch. The embedded brains GmbH has a copyright assignment with the FSF.
I was not able to test this patch with the latest snapshot due to this:
/home/sh/archive/gcc-4.7-20111029/libgcc/unwind-dw2.c: In function
'init_dwarf_reg_size_table':
/home/sh/archive/gcc-4.7-20111029/libgcc/unwind-dw2.c:1482:39: internal
compiler error: in arm_dbx_register_number, at config/arm/arm.c:23536
Kind regards,
Sebastian
--
Sebastian Huber, embedded brains GmbH
Address : Obere Lagerstr. 30, D-82178 Puchheim, Germany
Phone : +49 89 18 90 80 79-6
Fax : +49 89 18 90 80 79-9
E-Mail : sebastian.huber@embedded-brains.de
PGP : Public key available on request.
Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
2011-11-04 Sebastian Huber <sebastian.huber@embedded-brains.de>
* config.gcc (arm*-*-rtemseabi*): New target.
* config/arm/rtems-eabi.h: New.
* config/arm/t-rtems-eabi: New.
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 2c18655..6bdc025 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -904,7 +904,7 @@ arm*-*-ecos-elf)
tm_file="dbxelf.h elfos.h newlib-stdint.h arm/unknown-elf.h arm/elf.h arm/aout.h arm/arm.h arm/ecos-elf.h"
tmake_file="arm/t-arm arm/t-arm-elf"
;;
-arm*-*-eabi* | arm*-*-symbianelf* )
+arm*-*-eabi* | arm*-*-symbianelf* | arm*-*-rtemseabi* )
# The BPABI long long divmod functions return a 128-bit value in
# registers r0-r3. Correctly modeling that requires the use of
# TImode.
@@ -919,6 +919,10 @@ arm*-*-eabi* | arm*-*-symbianelf* )
tmake_file="${tmake_file} arm/t-bpabi"
use_gcc_stdint=wrap
;;
+ arm*-*-rtemseabi*)
+ tm_file="${tm_file} rtems.h arm/rtems-eabi.h newlib-stdint.h"
+ tmake_file="${tmake_file} arm/t-bpabi arm/t-rtems-eabi"
+ ;;
arm*-*-symbianelf*)
tm_file="${tm_file} arm/symbian.h"
libgcc_tm_file="$libgcc_tm_file arm/symbian-lib.h"
diff --git a/gcc/config/arm/rtems-eabi.h b/gcc/config/arm/rtems-eabi.h
new file mode 100644
index 0000000..ced98a9
--- /dev/null
+++ b/gcc/config/arm/rtems-eabi.h
@@ -0,0 +1,29 @@
+/* Definitions for RTEMS based ARM systems using EABI.
+ Copyright (C) 2011 Free Software Foundation, Inc.
+
+ 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/>. */
+
+#define HAS_INIT_SECTION
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do { \
+ builtin_define ("__rtems__"); \
+ builtin_define ("__USE_INIT_FINI__"); \
+ builtin_assert ("system=rtems"); \
+ TARGET_BPABI_CPP_BUILTINS(); \
+ } while (0)
diff --git a/gcc/config/arm/t-rtems-eabi b/gcc/config/arm/t-rtems-eabi
new file mode 100644
index 0000000..f0e714a
--- /dev/null
+++ b/gcc/config/arm/t-rtems-eabi
@@ -0,0 +1,8 @@
+# Custom RTEMS EABI multilibs
+
+MULTILIB_OPTIONS = mthumb march=armv6-m/march=armv7/march=armv7-m
+MULTILIB_DIRNAMES = thumb armv6-m armv7 armv7-m
+MULTILIB_EXCEPTIONS = march=armv6-m march=armv7 march=armv7-m
+MULTILIB_MATCHES =
+MULTILIB_EXCLUSIONS =
+MULTILIB_OSDIRNAMES =