Add netbsd support for D compiler and runtime

Merges upstream druntime fb4bda91.

2019-02-14  Maya Rashish  <coypu@sdf.org>

gcc/ChangeLog:

	* config.gcc (*-*-netbsd*): Add netbsd-d.o
	* config/netbsd-d.c: New file.
	* config/t-netbsd: Add netbsd-d.o

gcc/d/ChangeLog:

	* d-system.h: NetBSD is POSIX.

libphobos/ChangeLog:

	* configure.tgt: Add netbsd/x86 as supported target.

From-SVN: r268905

6 files changed, 59 insertions, 1 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1c4aa5d..e2c7b8e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-02-14  Maya Rashish  <coypu@sdf.org>
+
+	* config.gcc (*-*-netbsd*): Add netbsd-d.o
+	* config/netbsd-d.c: New file.
+	* config/t-netbsd: Add netbsd-d.o
+
 2018-02-14  Steve Ellcey  <sellcey@marvell.com>
 
 	* config/aarch64/aarch64.c (aarch64_attribute_table): Change
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 31b47c5..3ee31c5 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -839,6 +839,7 @@ case ${target} in
   tm_p_file="${tm_p_file} netbsd-protos.h"
   tmake_file="t-netbsd t-slibgcc"
   extra_objs="${extra_objs} netbsd.o"
+  d_target_objs="${d_target_objs} netbsd-d.o"
   gas=yes
   gnu_ld=yes
   use_gcc_stdint=wrap
@@ -847,6 +848,7 @@ case ${target} in
   esac
   nbsd_tm_file="netbsd.h netbsd-stdint.h netbsd-elf.h"
   default_use_cxa_atexit=yes
+  target_has_targetdm=yes
   ;;
 *-*-openbsd*)
   tmake_file="t-openbsd"
diff --git a/gcc/config/netbsd-d.c b/gcc/config/netbsd-d.c
new file mode 100644
index 0000000..76342aa
--- /dev/null
+++ b/gcc/config/netbsd-d.c
@@ -0,0 +1,41 @@
+/* Functions for generic NetBSD as target machine for GNU D compiler.
+   Copyright (C) 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/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "tree.h"
+#include "varasm.h"
+#include "netbsd-protos.h"
+#include "tm_p.h"
+#include "d/d-target.h"
+#include "d/d-target-def.h"
+
+static void
+netbsd_d_os_builtins (void)
+{
+  d_add_builtin_version ("Posix");
+  d_add_builtin_version ("NetBSD");
+}
+
+#undef TARGET_D_OS_VERSIONS
+#define TARGET_D_OS_VERSIONS netbsd_d_os_builtins
+
+struct gcc_targetdm targetdm = TARGETDM_INITIALIZER;
diff --git a/gcc/config/t-netbsd b/gcc/config/t-netbsd
index 4626e96..716a94f 100644
--- a/gcc/config/t-netbsd
+++ b/gcc/config/t-netbsd
@@ -19,3 +19,7 @@
 netbsd.o: $(srcdir)/config/netbsd.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
+
+netbsd-d.o: $(srcdir)/config/netbsd-d.c
+	$(COMPILE) $<
+	$(POSTCOMPILE)
diff --git a/gcc/d/ChangeLog b/gcc/d/ChangeLog
index 6eb2ac4..4bf2e95 100644
--- a/gcc/d/ChangeLog
+++ b/gcc/d/ChangeLog
@@ -1,3 +1,7 @@
+2019-02-14  Maya Rashish  <coypu@sdf.org>
+
+	* d-system.h: NetBSD is POSIX.
+
 2019-02-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	PR d/87864
diff --git a/gcc/d/d-system.h b/gcc/d/d-system.h
index cd59b82..c32825d 100644
--- a/gcc/d/d-system.h
+++ b/gcc/d/d-system.h
@@ -24,7 +24,8 @@
 
 /* Used by the dmd front-end to determine if we have POSIX-style IO.  */
 #define POSIX (__linux__ || __GLIBC__ || __gnu_hurd__ || __APPLE__ \
-	       || __FreeBSD__ || __OpenBSD__ || __DragonFly__ || __sun)
+	       || __FreeBSD__ || __NetBSD__ || __OpenBSD__ || __DragonFly__ \
+	       || __sun)
 
 /* Forward assert invariants to gcc_assert.  */
 #undef assert