[netbsd][aarch64] add netbsd/aarch64 target

Initial support for AArch64 running NetBSD.

Matthew Green <mrg@eterna.com.au>
Maya Rashish <coypu@sdf.org>

gcc:
	* config.gcc (aarch64*-*-netbsd*): New target.
	* config/aarch64/aarch64-netbsd.h: New file.
	* config/aarch64/t-aarch64-netbsd: Likewise.

libgcc:
	* config.host (aarch64*-*-netbsd*): New case.

Co-Authored-By: Maya Rashish <coypu@sdf.org>

From-SVN: r272387

6 files changed, 125 insertions, 0 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f118544..dfcf057 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2019-06-17  Matthew Green  <mrg@eterna.com.au>
+	    Maya Rashish  <coypu@sdf.org>
+
+	* config.gcc (aarch64*-*-netbsd*): New target.
+	* config/aarch64/aarch64-netbsd.h: New file.
+	* config/aarch64/t-aarch64-netbsd: Likewise.
+
 2019-06-17  Jan Hubicka  <hubicka@ucw.cz>
 
 	* tree-ssa-alias.c (aliasing_component_refs_p): Consider only
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 8f864c8..fda048d 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1021,6 +1021,12 @@ aarch64*-*-freebsd*)
 	tmake_file="${tmake_file} aarch64/t-aarch64 aarch64/t-aarch64-freebsd"
 	tm_defines="${tm_defines}  TARGET_DEFAULT_ASYNC_UNWIND_TABLES=1"
 	;;
+aarch64*-*-netbsd*)
+	tm_file="${tm_file} dbxelf.h elfos.h ${nbsd_tm_file}"
+	tm_file="${tm_file} aarch64/aarch64-elf.h aarch64/aarch64-netbsd.h"
+	tmake_file="${tmake_file} aarch64/t-aarch64 aarch64/t-aarch64-netbsd"
+	extra_options="${extra_options} netbsd.opt netbsd-elf.opt"
+	;;
 aarch64*-*-linux*)
 	tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h"
 	tm_file="${tm_file} aarch64/aarch64-elf.h aarch64/aarch64-linux.h"
diff --git a/gcc/config/aarch64/aarch64-netbsd.h b/gcc/config/aarch64/aarch64-netbsd.h
new file mode 100644
index 0000000..2686a1b
--- /dev/null
+++ b/gcc/config/aarch64/aarch64-netbsd.h
@@ -0,0 +1,80 @@
+/* Definitions for AArch64 running NetBSD
+   Copyright (C) 2016-2019 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/>.  */
+
+#ifndef GCC_AARCH64_NETBSD_H
+#define GCC_AARCH64_NETBSD_H
+
+#define TARGET_LINKER_BIG_EMULATION "aarch64nbsdb"
+#define TARGET_LINKER_LITTLE_EMULATION "aarch64nbsd"
+
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define TARGET_LINKER_EMULATION  TARGET_LINKER_BIG_EMULATION
+#else
+#define TARGET_LINKER_EMULATION  TARGET_LINKER_LITTLE_EMULATION
+#endif
+
+#undef  SUBTARGET_EXTRA_LINK_SPEC
+#define SUBTARGET_EXTRA_LINK_SPEC " -m" TARGET_LINKER_EMULATION
+
+#define NETBSD_ENTRY_POINT "__start"
+
+#define NETBSD_TARGET_LINK_SPEC  "%{h*} "				\
+  "-X %{mbig-endian:-EB -m " TARGET_LINKER_BIG_EMULATION "} "		\
+  "%{mlittle-endian:-EL -m " TARGET_LINKER_LITTLE_EMULATION "} "	\
+  "%(netbsd_link_spec)"
+
+#if TARGET_FIX_ERR_A53_835769_DEFAULT
+#define CA53_ERR_835769_SPEC \
+  " %{!mno-fix-cortex-a53-835769:--fix-cortex-a53-835769}"
+#else
+#define CA53_ERR_835769_SPEC \
+  " %{mfix-cortex-a53-835769:--fix-cortex-a53-835769}"
+#endif
+
+#ifdef TARGET_FIX_ERR_A53_843419_DEFAULT
+#define CA53_ERR_843419_SPEC \
+  " %{!mno-fix-cortex-a53-843419:--fix-cortex-a53-843419}"
+#else
+#define CA53_ERR_843419_SPEC \
+  " %{mfix-cortex-a53-843419:--fix-cortex-a53-843419}"
+#endif
+
+#undef  LINK_SPEC
+#define LINK_SPEC NETBSD_LINK_SPEC_ELF		\
+		  NETBSD_TARGET_LINK_SPEC	\
+		  CA53_ERR_835769_SPEC		\
+		  CA53_ERR_843419_SPEC
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS()		\
+  do						\
+    {						\
+      NETBSD_OS_CPP_BUILTINS_ELF();		\
+    }						\
+  while (0)
+
+#undef SUBTARGET_CPP_SPEC
+#define SUBTARGET_CPP_SPEC NETBSD_CPP_SPEC
+
+#undef EXTRA_SPECS
+#define EXTRA_SPECS \
+  { "asm_cpu_spec",             ASM_CPU_SPEC }, \
+  NETBSD_SUBTARGET_EXTRA_SPECS
+
+#endif  /* GCC_AARCH64_NETBSD_H */
diff --git a/gcc/config/aarch64/t-aarch64-netbsd b/gcc/config/aarch64/t-aarch64-netbsd
new file mode 100644
index 0000000..aa447d0
--- /dev/null
+++ b/gcc/config/aarch64/t-aarch64-netbsd
@@ -0,0 +1,21 @@
+# Machine description for AArch64 architecture.
+#  Copyright (C) 2016-2019 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/>.
+
+LIB1ASMSRC   = aarch64/lib1funcs.asm
+LIB1ASMFUNCS = _aarch64_sync_cache_range
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index fee8b38..934733d 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,8 @@
+2019-06-17  Matthew Green  <mrg@eterna.com.au>
+	    Maya Rashish  <coypu@sdf.org>
+
+	* config.host (aarch64*-*-netbsd*): New case.
+
 2019-06-16  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
 
 	* config/msp430/slli.S (__mspabi_sllll): New library function for
diff --git a/libgcc/config.host b/libgcc/config.host
index 0574b4d..e6a834b 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -359,6 +359,12 @@ aarch64*-*-freebsd*)
 	tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
 	md_unwind_header=aarch64/freebsd-unwind.h
 	;;
+aarch64*-*-netbsd*)
+	extra_parts="$extra_parts crtfastmath.o"
+	tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+	tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
+	md_unwind_header=aarch64/aarch64-unwind.h
+	;;
 aarch64*-*-fuchsia*)
 	tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
 	tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp"