nixpkgs/pkgs/development/compilers/gcc/7/Added-mcf-thread-model-support-from-mcfgthread.patch

From d3cb66e4751fcbd581b81a14a973de2d78fc02ad Mon Sep 17 00:00:00 2001
From: Liu Hao <lh_mouse@126.com>
Date: Mon, 18 Apr 2016 11:50:55 +0800
Subject: [PATCH] Added 'mcf' thread model support from mcfgthread.

Signed-off-by: Liu Hao <lh_mouse@126.com>
---
 config/gthr.m4                          |  1 +
 gcc/config.gcc                          |  3 +++
 gcc/config/i386/mingw-mcfgthread.h      |  1 +
 gcc/config/i386/mingw-w64.h             |  2 +-
 gcc/config/i386/mingw32.h               | 11 ++++++++++-
 gcc/configure                           |  2 +-
 gcc/configure.ac                        |  2 +-
 libatomic/configure.tgt                 |  2 +-
 libgcc/config.host                      |  6 ++++++
 libgcc/config/i386/gthr-mcf.h           |  1 +
 libgcc/config/i386/t-mingw-mcfgthread   |  2 ++
 libgcc/configure                        |  1 +
 libstdc++-v3/configure                  |  1 +
 libstdc++-v3/libsupc++/atexit_thread.cc | 18 ++++++++++++++++++
 libstdc++-v3/libsupc++/guard.cc         | 23 +++++++++++++++++++++++
 15 files changed, 71 insertions(+), 5 deletions(-)
 create mode 100644 gcc/config/i386/mingw-mcfgthread.h
 create mode 100644 libgcc/config/i386/gthr-mcf.h
 create mode 100644 libgcc/config/i386/t-mingw-mcfgthread

diff --git a/config/gthr.m4 b/config/gthr.m4
index 7b29f1f3327..82e21fe1709 100644
--- a/config/gthr.m4
+++ b/config/gthr.m4
@@ -21,6 +21,7 @@ case $1 in
     tpf)	thread_header=config/s390/gthr-tpf.h ;;
     vxworks)	thread_header=config/gthr-vxworks.h ;;
     win32)	thread_header=config/i386/gthr-win32.h ;;
+    mcf)	thread_header=config/i386/gthr-mcf.h ;;
 esac
 AC_SUBST(thread_header)
 ])
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 8f91197f34e..59db37cac04 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1719,6 +1719,9 @@ i[34567]86-*-mingw* | x86_64-*-mingw*)
 	if test x$enable_threads = xposix ; then
 		tm_file="${tm_file} i386/mingw-pthread.h"
 	fi
+	if test x$enable_threads = xmcf ; then
+		tm_file="${tm_file} i386/mingw-mcfgthread.h"
+	fi
 	tm_file="${tm_file} i386/mingw32.h"
 	# This makes the logic if mingw's or the w64 feature set has to be used
 	case ${target} in
diff --git a/gcc/config/i386/mingw-mcfgthread.h b/gcc/config/i386/mingw-mcfgthread.h
new file mode 100644
index 00000000000..ec381a7798f
--- /dev/null
+++ b/gcc/config/i386/mingw-mcfgthread.h
@@ -0,0 +1 @@
+#define TARGET_USE_MCFGTHREAD 1
diff --git a/gcc/config/i386/mingw-w64.h b/gcc/config/i386/mingw-w64.h
index 270ec0dd037..88966f79695 100644
--- a/gcc/config/i386/mingw-w64.h
+++ b/gcc/config/i386/mingw-w64.h
@@ -48,7 +48,7 @@ along with GCC; see the file COPYING3.  If not see
 		 "%{mwindows:-lgdi32 -lcomdlg32} " \
      "%{fvtable-verify=preinit:-lvtv -lpsapi; \
         fvtable-verify=std:-lvtv -lpsapi} " \
-		 "-ladvapi32 -lshell32 -luser32 -lkernel32"
+		 LIB_MCFGTHREAD "-ladvapi32 -lshell32 -luser32 -lkernel32"
 
 #undef SPEC_32
 #undef SPEC_64
diff --git a/gcc/config/i386/mingw32.h b/gcc/config/i386/mingw32.h
index e5f014cb473..989cfbe894e 100644
--- a/gcc/config/i386/mingw32.h
+++ b/gcc/config/i386/mingw32.h
@@ -32,6 +32,14 @@ along with GCC; see the file COPYING3.  If not see
 	 | MASK_STACK_PROBE | MASK_ALIGN_DOUBLE \
 	 | MASK_MS_BITFIELD_LAYOUT)
 
+#ifndef TARGET_USE_MCFGTHREAD
+#define CPP_MCFGTHREAD()  ((void)0)
+#define LIB_MCFGTHREAD     ""
+#else
+#define CPP_MCFGTHREAD()  (builtin_define("__USING_MCFGTHREAD__"))
+#define LIB_MCFGTHREAD     " -lmcfgthread "
+#endif
+
 /* See i386/crtdll.h for an alternative definition. _INTEGRAL_MAX_BITS
    is for compatibility with native compiler.  */
 #define EXTRA_OS_CPP_BUILTINS()					\
@@ -50,6 +58,7 @@ along with GCC; see the file COPYING3.  If not see
 	  builtin_define_std ("WIN64");				\
 	  builtin_define ("_WIN64");				\
 	}							\
+	CPP_MCFGTHREAD();	\
     }								\
   while (0)
 
@@ -93,7 +102,7 @@ along with GCC; see the file COPYING3.  If not see
 		 "%{mwindows:-lgdi32 -lcomdlg32} " \
      "%{fvtable-verify=preinit:-lvtv -lpsapi; \
         fvtable-verify=std:-lvtv -lpsapi} " \
-                 "-ladvapi32 -lshell32 -luser32 -lkernel32"
+                 LIB_MCFGTHREAD "-ladvapi32 -lshell32 -luser32 -lkernel32"
 
 /* Weak symbols do not get resolved if using a Windows dll import lib.
    Make the unwind registration references strong undefs.  */
diff --git a/gcc/configure b/gcc/configure
index ea73b151a4e..317200e5620 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -11681,7 +11681,7 @@ case ${enable_threads} in
     target_thread_file='single'
     ;;
   aix | dce | lynx | mipssde | posix | rtems | \
-  single | tpf | vxworks | win32)
+  single | tpf | vxworks | win32 | mcf)
     target_thread_file=${enable_threads}
     ;;
   *)
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 9d4c792a33f..d51899a5676 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -1612,7 +1612,7 @@ case ${enable_threads} in
     target_thread_file='single'
     ;;
   aix | dce | lynx | mipssde | posix | rtems | \
-  single | tpf | vxworks | win32)
+  single | tpf | vxworks | win32 | mcf)
     target_thread_file=${enable_threads}
     ;;
   *)
diff --git a/libatomic/configure.tgt b/libatomic/configure.tgt
index b8af3ab2546..73248438a8c 100644
--- a/libatomic/configure.tgt
+++ b/libatomic/configure.tgt
@@ -125,7 +125,7 @@ case "${target}" in
   *-*-mingw*)
 	# OS support for atomic primitives.
         case ${target_thread_file} in
-          win32)
+          win32 | mcf)
             config_path="${config_path} mingw"
             ;;
           posix)
diff --git a/libgcc/config.host b/libgcc/config.host
index b279a6458f9..20d22f585da 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -710,6 +710,9 @@ i[34567]86-*-mingw*)
 	  posix)
 	    tmake_file="i386/t-mingw-pthread $tmake_file"
 	    ;;
+	  mcf)
+	    tmake_file="i386/t-mingw-mcfgthread $tmake_file"
+	    ;;
 	esac
 	# This has to match the logic for DWARF2_UNWIND_INFO in gcc/config/i386/cygming.h
 	if test x$ac_cv_sjlj_exceptions = xyes; then
@@ -734,6 +737,9 @@ x86_64-*-mingw*)
 	  posix)
 	    tmake_file="i386/t-mingw-pthread $tmake_file"
 	    ;;
+	  mcf)
+	    tmake_file="i386/t-mingw-mcfgthread $tmake_file"
+	    ;;
 	esac
 	# This has to match the logic for DWARF2_UNWIND_INFO in gcc/config/i386/cygming.h
 	if test x$ac_cv_sjlj_exceptions = xyes; then
diff --git a/libgcc/config/i386/gthr-mcf.h b/libgcc/config/i386/gthr-mcf.h
new file mode 100644
index 00000000000..5ea2908361f
--- /dev/null
+++ b/libgcc/config/i386/gthr-mcf.h
@@ -0,0 +1 @@
+#include <mcfgthread/gthread.h>
diff --git a/libgcc/config/i386/t-mingw-mcfgthread b/libgcc/config/i386/t-mingw-mcfgthread
new file mode 100644
index 00000000000..4b9b10e32d6
--- /dev/null
+++ b/libgcc/config/i386/t-mingw-mcfgthread
@@ -0,0 +1,2 @@
+SHLIB_PTHREAD_CFLAG =
+SHLIB_PTHREAD_LDFLAG = -lmcfgthread
diff --git a/libgcc/configure b/libgcc/configure
index 45c459788c3..8fc569ef16e 100644
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -5086,6 +5086,7 @@ case $target_thread_file in
     tpf)	thread_header=config/s390/gthr-tpf.h ;;
     vxworks)	thread_header=config/gthr-vxworks.h ;;
     win32)	thread_header=config/i386/gthr-win32.h ;;
+    mcf)	thread_header=config/i386/gthr-mcf.h ;;
 esac
 
 
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 2406cb9d946..50e7e4ced89 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -15182,6 +15182,7 @@ case $target_thread_file in
     tpf)	thread_header=config/s390/gthr-tpf.h ;;
     vxworks)	thread_header=config/gthr-vxworks.h ;;
     win32)	thread_header=config/i386/gthr-win32.h ;;
+    mcf)	thread_header=config/i386/gthr-mcf.h ;;
 esac
 
 
diff --git a/libstdc++-v3/libsupc++/atexit_thread.cc b/libstdc++-v3/libsupc++/atexit_thread.cc
index 923a0707556..a55d85aad2d 100644
--- a/libstdc++-v3/libsupc++/atexit_thread.cc
+++ b/libstdc++-v3/libsupc++/atexit_thread.cc
@@ -25,6 +25,22 @@
 #include <cstdlib>
 #include <new>
 #include "bits/gthr.h"
+
+#ifdef __USING_MCFGTHREAD__
+
+#include <mcfgthread/gthread.h>
+
+extern "C" int
+__cxxabiv1::__cxa_thread_atexit (void (*dtor)(void *),
+				 void *obj, void *dso_handle)
+  _GLIBCXX_NOTHROW
+{
+  return ::_MCFCRT_AtThreadExit((void (*)(_MCFCRT_STD intptr_t))dtor, (_MCFCRT_STD intptr_t)obj) ? 0 : -1;
+  (void)dso_handle;
+}
+
+#else // __USING_MCFGTHREAD__
+
 #ifdef _GLIBCXX_THREAD_ATEXIT_WIN32
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
@@ -167,3 +183,5 @@ __cxxabiv1::__cxa_thread_atexit (void (*dtor)(void *), void *obj, void */*dso_ha
 }
 
 #endif /* _GLIBCXX_HAVE___CXA_THREAD_ATEXIT_IMPL */
+
+#endif // __USING_MCFGTHREAD__
diff --git a/libstdc++-v3/libsupc++/guard.cc b/libstdc++-v3/libsupc++/guard.cc
index 19953bc52f0..72fd5f26d5b 100644
--- a/libstdc++-v3/libsupc++/guard.cc
+++ b/libstdc++-v3/libsupc++/guard.cc
@@ -28,6 +28,27 @@
 #include <cxxabi.h>
 #include <exception>
 #include <new>
+
+#ifdef __USING_MCFGTHREAD__
+
+#include <mcfgthread/gthread.h>
+
+namespace __cxxabiv1 {
+
+extern "C" int __cxa_guard_acquire(__guard *g){
+	return ::_MCFCRT_WaitForOnceFlagForever((::_MCFCRT_OnceFlag *)g) == ::_MCFCRT_kOnceResultInitial;
+}
+extern "C" void __cxa_guard_abort(__guard *g) throw() {
+	::_MCFCRT_SignalOnceFlagAsAborted((::_MCFCRT_OnceFlag *)g);
+}
+extern "C" void __cxa_guard_release(__guard *g) throw() {
+	::_MCFCRT_SignalOnceFlagAsFinished((::_MCFCRT_OnceFlag *)g);
+}
+
+}
+
+#else // __USING_MCFGTHREAD__
+
 #include <ext/atomicity.h>
 #include <ext/concurrence.h>
 #include <bits/atomic_lockfree_defines.h>
@@ -425,3 +446,5 @@ namespace __cxxabiv1
 #endif
   }
 }
+
+#endif
-- 
2.12.1