Hello Ramana,
thanks for the quick review.
On 11/04/2011 12:43 PM, Ramana Radhakrishnan wrote:
/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
Your original post in this thread suggested that you wanted to switch
the rtems port to use the AAPCS
http://gcc.gnu.org/ml/gcc/2011-04/msg00100.html .
If the above is what was intended this is not the right way of
achieving it because you are missing an include of bpabi.h which sets
ARM_DEFAULT_ABI to ARM_ABI_AAPCS and a raft of other pre-processor
defines that you need to get the backend in the right form for using
the AAPCS implementation.
Yes, the above is what was intended. The bpabi.h is provided by the common
EABI part in the gcc/config.gcc section.
The other problem is that you aren't using
the right unwind info which is why you are hitting this issue because
it just uses the standard eh_frame implementation .Look at how this is
done in libgcc/config.host.
Thanks for the hint. This libgcc/config.host part seems to be new in GCC 4.7.
Attached is a new patch. It builds well and the test suite runs currently.
Kind regards,
Sebastian
--
Sebastian Huber, embedded brains GmbH
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Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
2011-11-04 Sebastian Huber <sebastian.hu...@embedded-brains.de>
* gcc/config.gcc (arm*-*-rtemseabi*): New target.
* gcc/config/arm/rtems-eabi.h: New.
* gcc/config/arm/t-rtems-eabi: New.
* libgcc/config.host (arm*-*-rtemseabi*): New target.
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 2c18655..a1e7a6d 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="${tmake_file} arm/t-bpabi t-rtems arm/t-rtems-eabi"
+ ;;
arm*-*-symbianelf*)
tm_file="${tm_file} arm/symbian.h"
libgcc_tm_file="$libgcc_tm_file arm/symbian-lib.h"
diff --git a/gcc/config/arm/rtems-eabi.h b/gcc/config/arm/rtems-eabi.h
new file mode 100644
index 0000000..ced98a9
--- /dev/null
+++ b/gcc/config/arm/rtems-eabi.h
@@ -0,0 +1,29 @@
+/* Definitions for RTEMS based ARM systems using EABI.
+ Copyright (C) 2011 Free Software Foundation, Inc.
+
+ This file is part of GCC.
+
+ GCC is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GCC is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+#define HAS_INIT_SECTION
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do { \
+ builtin_define ("__rtems__"); \
+ builtin_define ("__USE_INIT_FINI__"); \
+ builtin_assert ("system=rtems"); \
+ TARGET_BPABI_CPP_BUILTINS(); \
+ } while (0)
diff --git a/gcc/config/arm/t-rtems-eabi b/gcc/config/arm/t-rtems-eabi
new file mode 100644
index 0000000..f0e714a
--- /dev/null
+++ b/gcc/config/arm/t-rtems-eabi
@@ -0,0 +1,8 @@
+# Custom RTEMS EABI multilibs
+
+MULTILIB_OPTIONS = mthumb march=armv6-m/march=armv7/march=armv7-m
+MULTILIB_DIRNAMES = thumb armv6-m armv7 armv7-m
+MULTILIB_EXCEPTIONS = march=armv6-m march=armv7 march=armv7-m
+MULTILIB_MATCHES =
+MULTILIB_EXCLUSIONS =
+MULTILIB_OSDIRNAMES =
diff --git a/libgcc/config.host b/libgcc/config.host
index 08c00a3..57b044a 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -300,10 +300,10 @@ arm*-*-uclinux*) # ARM ucLinux
arm*-*-ecos-elf)
tmake_file="$tmake_file t-softfp-sfdf t-softfp-excl arm/t-softfp t-softfp"
;;
-arm*-*-eabi* | arm*-*-symbianelf* )
+arm*-*-eabi* | arm*-*-symbianelf* | arm*-*-rtemseabi*)
tmake_file="${tmake_file} t-fixedpoint-gnu-prefix"
case ${host} in
- arm*-*-eabi*)
+ arm*-*-eabi* | arm*-*-rtemseabi*)
tmake_file="${tmake_file} arm/t-bpabi"
;;
arm*-*-symbianelf*)
