Please post to gcc-patches.
I would like to hear their opinion before committing it.
On 6/18/2013 6:58 AM, Sebastian Huber wrote:
Some debuggers do not cope with the new DWARF3/4 debug format introduced
with GCC 4.8. Default to strict DWARF-2 on ARM, PowerPC and SPARC for
now.
This patch should be committed to GCC 4.8 and 4.9.
gcc/ChangeLog
2013-06-18 Sebastian Huber <[email protected]>
* config/rtems.c: New.
* config.gcc (*-*-rtems*): Set extra_objs.
* config/rtems.h (rtems_override_options): Declare.
(RTEMS_OVERRIDE_OPTIONS): Define.
* config/t-rtems (rtems.o): New.
* config/arm/rtems-eabi.h (SUBTARGET_OVERRIDE_OPTIONS): Define.
* config/rs6000/rtems.h (SUBSUBTARGET_OVERRIDE_OPTIONS): Define.
* config/sparc/rtemself.h (SUBTARGET_OVERRIDE_OPTIONS): Define.
---
gcc/config.gcc | 1 +
gcc/config/arm/rtems-eabi.h | 3 +++
gcc/config/rs6000/rtems.h | 3 +++
gcc/config/rtems.c | 37 +++++++++++++++++++++++++++++++++++++
gcc/config/rtems.h | 4 ++++
gcc/config/sparc/rtemself.h | 3 +++
gcc/config/t-rtems | 4 ++++
7 files changed, 55 insertions(+), 0 deletions(-)
create mode 100644 gcc/config/rtems.c
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 1a0be50..6394551 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -734,6 +734,7 @@ case ${target} in
yes) thread_file='rtems' ;;
esac
extra_options="${extra_options} rtems.opt"
+ extra_objs="rtems.o"
use_gcc_stdint=wrap
;;
*-*-uclinux*)
diff --git a/gcc/config/arm/rtems-eabi.h b/gcc/config/arm/rtems-eabi.h
index 77fcf1a..a7ccdae 100644
--- a/gcc/config/arm/rtems-eabi.h
+++ b/gcc/config/arm/rtems-eabi.h
@@ -27,3 +27,6 @@
builtin_assert ("system=rtems"); \
TARGET_BPABI_CPP_BUILTINS(); \
} while (0)
+
+#undef SUBTARGET_OVERRIDE_OPTIONS
+#define SUBTARGET_OVERRIDE_OPTIONS RTEMS_OVERRIDE_OPTIONS
diff --git a/gcc/config/rs6000/rtems.h b/gcc/config/rs6000/rtems.h
index b910b5e..cf53592 100644
--- a/gcc/config/rs6000/rtems.h
+++ b/gcc/config/rs6000/rtems.h
@@ -34,6 +34,9 @@
} \
while (0)
+#undef SUBSUBTARGET_OVERRIDE_OPTIONS
+#define SUBSUBTARGET_OVERRIDE_OPTIONS RTEMS_OVERRIDE_OPTIONS
+
#undef CPP_OS_DEFAULT_SPEC
#define CPP_OS_DEFAULT_SPEC "%(cpp_os_rtems)"
diff --git a/gcc/config/rtems.c b/gcc/config/rtems.c
new file mode 100644
index 0000000..4250ba3
--- /dev/null
+++ b/gcc/config/rtems.c
@@ -0,0 +1,37 @@
+/* Common RTEMS target definitions for GNU compiler.
+ Copyright (C) 2013 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/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "target.h"
+#include "tm.h"
+
+void
+rtems_override_options (void)
+{
+ /* Use strict DWARF-2 unless specifically selected. This is a
+ workaround for a lack of tool support. */
+
+ if (!global_options_set.x_dwarf_strict)
+ dwarf_strict = 1;
+
+ if (!global_options_set.x_dwarf_version)
+ dwarf_version = 2;
+}
diff --git a/gcc/config/rtems.h b/gcc/config/rtems.h
index 4d94f82..8ea97fe 100644
--- a/gcc/config/rtems.h
+++ b/gcc/config/rtems.h
@@ -43,3 +43,7 @@ along with GCC; see the file COPYING3. If not see
-lc -lgcc --end-group %{!qnolinkcmds: -T linkcmds%s}}}"
#define TARGET_POSIX_IO
+
+/* Do RTEMS specific parts of TARGET_OPTION_OVERRIDE. */
+extern void rtems_override_options (void);
+#define RTEMS_OVERRIDE_OPTIONS rtems_override_options ()
diff --git a/gcc/config/sparc/rtemself.h b/gcc/config/sparc/rtemself.h
index 7a69dfa..2ee939c 100644
--- a/gcc/config/sparc/rtemself.h
+++ b/gcc/config/sparc/rtemself.h
@@ -29,5 +29,8 @@ along with GCC; see the file COPYING3. If not see
} \
while (0)
+#undef SUBTARGET_OVERRIDE_OPTIONS
+#define SUBTARGET_OVERRIDE_OPTIONS RTEMS_OVERRIDE_OPTIONS
+
/* Use the default */
#undef LINK_GCC_C_SEQUENCE_SPEC
diff --git a/gcc/config/t-rtems b/gcc/config/t-rtems
index baa00d8..5a8e88a 100644
--- a/gcc/config/t-rtems
+++ b/gcc/config/t-rtems
@@ -1,2 +1,6 @@
# RTEMS always has limits.h.
LIMITS_H_TEST = true
+
+rtems.o: $(srcdir)/config/rtems.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
+ $(TARGET_H) $(TM_H)
+ $(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
--
Joel Sherrill, Ph.D. Director of Research & Development
[email protected] On-Line Applications Research
Ask me about RTEMS: a free RTOS Huntsville AL 35805
Support Available (256) 722-9985
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