gcc/
* config.gcc (riscv*-*-elf*): Add (riscv*-*-rtems*).
* config/riscv/rtems.h: New file.
---
gcc/config.gcc | 7 ++++++-
gcc/config/riscv/rtems.h | 31 +++++++++++++++++++++++++++++++
2 files changed, 37 insertions(+), 1 deletion(-)
create mode 100644 gcc/config/riscv/rtems.h
diff --git a/gcc/config.gcc b/gcc/config.gcc
index aab7f65c1df..f28164646c3 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -2040,7 +2040,7 @@ riscv*-*-linux*)
# automatically detect that GAS supports it, yet we require it.
gcc_cv_initfini_array=yes
;;
-riscv*-*-elf*)
+riscv*-*-elf* | riscv*-*-rtems*)
tm_file="elfos.h newlib-stdint.h ${tm_file} riscv/elf.h"
case "x${enable_multilib}" in
xno) ;;
@@ -2053,6 +2053,11 @@ riscv*-*-elf*)
# Force .init_array support. The configure script cannot always
# automatically detect that GAS supports it, yet we require it.
gcc_cv_initfini_array=yes
+ case ${target} in
+ riscv*-*-rtems*)
+ tm_file="${tm_file} rtems.h riscv/rtems.h"
+ ;;
+ esac
;;
mips*-*-netbsd*) # NetBSD/mips, either endian.
target_cpu_default="MASK_ABICALLS"
diff --git a/gcc/config/riscv/rtems.h b/gcc/config/riscv/rtems.h
new file mode 100644
index 00000000000..221e2f69815
--- /dev/null
+++ b/gcc/config/riscv/rtems.h
@@ -0,0 +1,31 @@
+/* Definitions for RISC-V RTEMS systems with ELF format.
+ Copyright (C) 2017 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.
+
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#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)
--
2.12.3
