Master

build/gcc/gcc-vers.texi

@@ -0,0 +1,5 @@
+@set version-GCC 11.0.1
+@set DEVELOPMENT
+@set srcdir C:/data/build/gcc/../../gcc
+@set VERSION_PACKAGE (GCC) 
+@set BUGURL @uref{https://gcc.gnu.org/bugs/}

gcc/config.gcc

@@ -917,6 +917,8 @@ case ${target} in
       default_use_cxa_atexit=yes
       ;;
   esac
+  d_target_objs="${d_target_objs} openbsd-d.o"
+  target_has_targetdm=yes
   ;;
 *-*-phoenix*)
   gas=yes
@@ -2121,6 +2123,8 @@ i[34567]86-*-cygwin*)
 	extra_objs="${extra_objs} winnt.o winnt-stubs.o"
 	c_target_objs="${c_target_objs} msformat-c.o"
 	cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
+	d_target_objs="${d_target_objs} winnt-d.o"
+	target_has_targetdm="yes"
 	if test x$enable_threads = xyes; then
 		thread_file='posix'
 	fi
@@ -2137,6 +2141,8 @@ x86_64-*-cygwin*)
 	extra_objs="${extra_objs} winnt.o winnt-stubs.o"
 	c_target_objs="${c_target_objs} msformat-c.o"
 	cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
+	d_target_objs="${d_target_objs} winnt-d.o"
+	target_has_targetdm="yes"
 	if test x$enable_threads = xyes; then
 		thread_file='posix'
 	fi
@@ -2149,7 +2155,9 @@ i[34567]86-*-mingw* | x86_64-*-mingw*)
 	xm_file=i386/xm-mingw32.h
 	c_target_objs="${c_target_objs} winnt-c.o"
 	cxx_target_objs="${cxx_target_objs} winnt-c.o"
+	d_target_objs="${d_target_objs} winnt-d.o"
 	target_has_targetcm="yes"
+	target_has_targetdm="yes"
 	case ${target} in
 		x86_64-*-* | *-w64-*)
 			need_64bit_isa=yes

gcc/config/aarch64/aarch64-d.c

@@ -15,6 +15,8 @@ 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 IN_TARGET_CODE 1
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"

gcc/config/arm/arm-d.c

@@ -15,6 +15,8 @@ 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 IN_TARGET_CODE 1
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"

gcc/config/freebsd-d.c

@@ -18,6 +18,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"
+#include "memmodel.h"
 #include "tm.h"
 #include "tm_p.h"
 #include "d/d-target.h"

gcc/config/i386/cygming.h

@@ -209,6 +209,8 @@ along with GCC; see the file COPYING3.  If not see
 #define SUBTARGET_OVERRIDE_OPTIONS					\
 do {									\
   flag_pic = TARGET_64BIT ? 1 : 0;                                      \
+  if (!global_options_set.x_dwarf_version)				\
+    dwarf_version = 4;							\
 } while (0)
 
 /* Define this macro if references to a symbol must be treated

gcc/config/i386/cygwin.h

@@ -29,6 +29,15 @@ along with GCC; see the file COPYING3.  If not see
     }								\
   while (0)
 
+#define EXTRA_TARGET_D_OS_VERSIONS()				\
+  do								\
+    {								\
+      builtin_version ("Cygwin");				\
+      builtin_version ("Posix");				\
+      builtin_version ("CRuntime_Newlib");			\
+    }								\
+  while (0)
+
 #undef CPP_SPEC
 #define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
   %{!ansi:-Dunix} \

gcc/config/i386/i386-d.c

@@ -15,12 +15,15 @@ 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 IN_TARGET_CODE 1
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"
 #include "tm.h"
 #include "d/d-target.h"
 #include "d/d-target-def.h"
+#include "d/dmd/globaltypes.h"  /* For enum LINK.  */
 
 /* Implement TARGET_D_CPU_VERSIONS for x86 targets.  */
 
@@ -42,3 +45,14 @@ ix86_d_target_versions (void)
   else
     d_add_builtin_version ("D_SoftFloat");
 }
+
+/* Implement TARGET_D_EXTERN_SYSTEM_LINKAGE for x86 targets.  */
+
+int
+ix86_d_extern_system_linkage (void)
+{
+  if (ix86_abi == MS_ABI)
+    return LINKwindows;
+
+  return LINKc;
+}

gcc/config/i386/i386-protos.h

@@ -264,6 +264,7 @@ extern void ix86_register_pragmas (void);
 
 /* In i386-d.c  */
 extern void ix86_d_target_versions (void);
+extern int ix86_d_extern_system_linkage (void);
 
 /* In winnt.c  */
 extern void i386_pe_unique_section (tree, int);

gcc/config/i386/i386.h

@@ -799,8 +799,9 @@ extern const char *host_detect_local_cpu (int argc, const char **argv);
 /* Target Pragmas.  */
 #define REGISTER_TARGET_PRAGMAS() ix86_register_pragmas ()
 
-/* Target CPU versions for D.  */
+/* Target hooks for D language.  */
 #define TARGET_D_CPU_VERSIONS ix86_d_target_versions
+#define TARGET_D_EXTERN_SYSTEM_LINKAGE ix86_d_extern_system_linkage
 
 #ifndef CC1_SPEC
 #define CC1_SPEC "%(cc1_cpu) "

gcc/config/i386/mingw32.h

@@ -53,6 +53,18 @@ along with GCC; see the file COPYING3.  If not see
     }								\
   while (0)
 
+#define EXTRA_TARGET_D_OS_VERSIONS()				\
+  do								\
+    {								\
+      builtin_version ("MinGW");				\
+      if (TARGET_64BIT && ix86_abi == MS_ABI)			\
+	builtin_version ("Win64");				\
+      else if (!TARGET_64BIT)					\
+	builtin_version ("Win32");				\
+      builtin_version ("CRuntime_Microsoft");			\
+    }								\
+  while (0)
+
 #ifndef TARGET_USE_PTHREAD_BY_DEFAULT
 #define SPEC_PTHREAD1 "pthread"
 #define SPEC_PTHREAD2 "!no-pthread"

gcc/config/i386/t-cygming

@@ -39,6 +39,10 @@ winnt-stubs.o: $(srcdir)/config/i386/winnt-stubs.c $(CONFIG_H) $(SYSTEM_H) coret
 	$(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
 	$(srcdir)/config/i386/winnt-stubs.c
 
+winnt-d.o: $(srcdir)/config/i386/winnt-d.c
+	$(COMPILE) $<
+	$(POSTCOMPILE)
+
 msformat-c.o: $(srcdir)/config/i386/msformat-c.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
   $(TM_H) $(RTL_H) $(REGS_H) hard-reg-set.h output.h $(TREE_H) flags.h \
   $(TM_P_H) $(HASHTAB_H) $(GGC_H)

gcc/config/i386/winnt-d.c

@@ -0,0 +1,61 @@
+/* Windows support needed only by D front-end.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+
+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 IN_TARGET_CODE 1
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "target.h"
+#include "d/d-target.h"
+#include "d/d-target-def.h"
+#include "tm_p.h"
+
+/* Implement TARGET_D_OS_VERSIONS for Windows targets.  */
+
+static void
+winnt_d_os_builtins (void)
+{
+  d_add_builtin_version ("Windows");
+
+  if (ix86_abi == SYSV_ABI)
+    d_add_builtin_version ("SYSV_ABI");
+  else
+    d_add_builtin_version ("MS_ABI");
+
+#define builtin_version(TXT) d_add_builtin_version (TXT)
+
+#ifdef EXTRA_TARGET_D_OS_VERSIONS
+  EXTRA_TARGET_D_OS_VERSIONS ();
+#endif
+}
+
+#undef TARGET_D_OS_VERSIONS
+#define TARGET_D_OS_VERSIONS winnt_d_os_builtins
+
+/* Define TARGET_D_MINFO_SECTION for Windows targets.  */
+
+#undef TARGET_D_MINFO_SECTION
+#define TARGET_D_MINFO_SECTION "minfo"
+
+#undef TARGET_D_MINFO_START_NAME
+#define TARGET_D_MINFO_START_NAME "__start_minfo"
+
+#undef TARGET_D_MINFO_END_NAME
+#define TARGET_D_MINFO_END_NAME "__stop_minfo"
+
+struct gcc_targetdm targetdm = TARGETDM_INITIALIZER;

gcc/config/mips/mips-d.c

@@ -15,6 +15,8 @@ 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 IN_TARGET_CODE 1
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"

gcc/config/openbsd-d.c

@@ -0,0 +1,39 @@
+/* Functions for generic OpenBSD as target machine for GNU D compiler.
+   Copyright (C) 2021 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 "memmodel.h"
+#include "tm.h"
+#include "tm_p.h"
+#include "d/d-target.h"
+#include "d/d-target-def.h"
+
+static void
+openbsd_d_os_builtins (void)
+{
+  d_add_builtin_version ("Posix");
+  d_add_builtin_version ("OpenBSD");
+}
+
+#undef TARGET_D_OS_VERSIONS
+#define TARGET_D_OS_VERSIONS openbsd_d_os_builtins
+
+struct gcc_targetdm targetdm = TARGETDM_INITIALIZER;

gcc/config/pa/pa-d.c

@@ -15,6 +15,8 @@ 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 IN_TARGET_CODE 1
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"

gcc/config/riscv/riscv-d.c

@@ -15,6 +15,8 @@ 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 IN_TARGET_CODE 1
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"

gcc/config/rs6000/rs6000-d.c

@@ -15,6 +15,8 @@ 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 IN_TARGET_CODE 1
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"

gcc/config/s390/s390-d.c

@@ -15,6 +15,8 @@ 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 IN_TARGET_CODE 1
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"

gcc/config/sparc/sparc-d.c

@@ -15,6 +15,8 @@ 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 IN_TARGET_CODE 1
+
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"

gcc/config/t-openbsd

@@ -1,2 +1,7 @@
 # We don't need GCC's own include files.
 USER_H = $(EXTRA_HEADERS)
+
+# OpenBSD-specific D support.
+openbsd-d.o: $(srcdir)/config/openbsd-d.c
+	$(COMPILE) $<
+	$(POSTCOMPILE)

gcc/d/d-target.cc

@@ -417,11 +417,14 @@ TargetCPP::fundamentalType (const Type *, bool &)
   return false;
 }
 
-/* Return the default system linkage for the target.  */
+/* Return the default `extern (System)` linkage for the target.  */
 
 LINK
 Target::systemLinkage (void)
 {
+  if (targetdm.d_extern_system_linkage)
+    return (LINK) targetdm.d_extern_system_linkage ();
+
   return LINKc;
 }
 

gcc/d/d-target.def

@@ -46,6 +46,16 @@ relating to the target operating system.",
  void, (void),
  hook_void_void)
 
+/* */
+DEFHOOK
+(d_extern_system_linkage,
+ "If defined, this hook returns the extern linkage which should be applied\n\
+ for all declarations annotated with @code{extern (System)}.  Typically,\n\
+ @code{extern (System)} is the same as @code{extern (Windows)} on Microsoft\n\
+ Windows platforms, and @code{extern (C)} on other platforms.",
+ int, (void),
+ NULL)
+
 /* ModuleInfo section name and brackets.  */
 DEFHOOKPOD
 (d_minfo_section,