From: Syrone Wong <wong.syrone@gmail.com>
Date: Sat, 24 Dec 2016 09:09:35 +0000 (+0800)
Subject: toolchain/gcc: update 6.x to 6.3.0
X-Git-Tag: v17.01.0-rc1~380
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=0a5ccfbadda79f4626202b78326c4d3ffccf9bd1;p=openwrt%2Fstaging%2Fxback.git

toolchain/gcc: update 6.x to 6.3.0

This is a bugfix release

Build and run tested on mvebu/Linksys WRT1900AC v1

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>
---

diff --git a/toolchain/gcc/Config.version b/toolchain/gcc/Config.version
index 27aa20cb39..2eefd37d5a 100644
--- a/toolchain/gcc/Config.version
+++ b/toolchain/gcc/Config.version
@@ -5,7 +5,7 @@ config GCC_VERSION_4_8_ARC
 config GCC_VERSION
 	string
 	default "arc-2016.03"   if GCC_VERSION_4_8_ARC
-	default "6.2.0"         if GCC_USE_VERSION_6
+	default "6.3.0"         if GCC_USE_VERSION_6
 	default "5.4.0"
 
 config GCC_VERSION_4_8
diff --git a/toolchain/gcc/common.mk b/toolchain/gcc/common.mk
index c1010dd0c9..fce8a5165c 100644
--- a/toolchain/gcc/common.mk
+++ b/toolchain/gcc/common.mk
@@ -32,8 +32,8 @@ ifeq ($(PKG_VERSION),5.4.0)
   PKG_HASH:=608df76dec2d34de6558249d8af4cbee21eceddbcb580d666f7a5a583ca3303a
 endif
 
-ifeq ($(PKG_VERSION),6.2.0)
-  PKG_HASH:=9944589fc722d3e66308c0ce5257788ebd7872982a718aa2516123940671b7c5
+ifeq ($(PKG_VERSION),6.3.0)
+  PKG_HASH:=f06ae7f3f790fbf0f018f6d40e844451e6bc3b7bc96e128e63b09825c1f8b29f
 endif
 
 ifneq ($(CONFIG_GCC_VERSION_4_8_ARC),)
diff --git a/toolchain/gcc/patches/6.2.0/001-revert_register_mode_search.patch b/toolchain/gcc/patches/6.2.0/001-revert_register_mode_search.patch
deleted file mode 100644
index bd6fbdb4a9..0000000000
--- a/toolchain/gcc/patches/6.2.0/001-revert_register_mode_search.patch
+++ /dev/null
@@ -1,65 +0,0 @@
-Revert of:
-
-commit 275035b56823b26d5fb7e90fad945b998648edf2
-Author: bergner <bergner@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date:   Thu Sep 5 14:09:07 2013 +0000
-
-        PR target/58139
-        * reginfo.c (choose_hard_reg_mode): Scan through all mode classes
-        looking for widest mode.
-
-
-    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202286 138bc75d-0d04-0410-961f-82ee72b054a4
-
-
---- a/gcc/reginfo.c
-+++ b/gcc/reginfo.c
-@@ -625,35 +625,40 @@ choose_hard_reg_mode (unsigned int regno
-        mode = GET_MODE_WIDER_MODE (mode))
-     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
- 	&& HARD_REGNO_MODE_OK (regno, mode)
--	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
--	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
-+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
-       found_mode = mode;
- 
-+  if (found_mode != VOIDmode)
-+    return found_mode;
-+
-   for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
-        mode != VOIDmode;
-        mode = GET_MODE_WIDER_MODE (mode))
-     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
- 	&& HARD_REGNO_MODE_OK (regno, mode)
--	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
--	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
-+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
-       found_mode = mode;
- 
-+  if (found_mode != VOIDmode)
-+    return found_mode;
-+
-   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
-        mode != VOIDmode;
-        mode = GET_MODE_WIDER_MODE (mode))
-     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
- 	&& HARD_REGNO_MODE_OK (regno, mode)
--	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
--	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
-+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
-       found_mode = mode;
- 
-+  if (found_mode != VOIDmode)
-+    return found_mode;
-+
-   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
-        mode != VOIDmode;
-        mode = GET_MODE_WIDER_MODE (mode))
-     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
- 	&& HARD_REGNO_MODE_OK (regno, mode)
--	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
--	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
-+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
-       found_mode = mode;
- 
-   if (found_mode != VOIDmode)
diff --git a/toolchain/gcc/patches/6.2.0/002-case_insensitive.patch b/toolchain/gcc/patches/6.2.0/002-case_insensitive.patch
deleted file mode 100644
index b3d2dbe291..0000000000
--- a/toolchain/gcc/patches/6.2.0/002-case_insensitive.patch
+++ /dev/null
@@ -1,14 +0,0 @@
---- a/include/filenames.h
-+++ b/include/filenames.h
-@@ -43,11 +43,6 @@ extern "C" {
- #  define IS_DIR_SEPARATOR(c) IS_DOS_DIR_SEPARATOR (c)
- #  define IS_ABSOLUTE_PATH(f) IS_DOS_ABSOLUTE_PATH (f)
- #else /* not DOSish */
--#  if defined(__APPLE__)
--#    ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
--#      define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
--#    endif
--#  endif /* __APPLE__ */
- #  define HAS_DRIVE_SPEC(f) (0)
- #  define IS_DIR_SEPARATOR(c) IS_UNIX_DIR_SEPARATOR (c)
- #  define IS_ABSOLUTE_PATH(f) IS_UNIX_ABSOLUTE_PATH (f)
diff --git a/toolchain/gcc/patches/6.2.0/010-documentation.patch b/toolchain/gcc/patches/6.2.0/010-documentation.patch
deleted file mode 100644
index 2adb28c83d..0000000000
--- a/toolchain/gcc/patches/6.2.0/010-documentation.patch
+++ /dev/null
@@ -1,23 +0,0 @@
---- a/gcc/Makefile.in
-+++ b/gcc/Makefile.in
-@@ -3021,18 +3021,10 @@ doc/gcc.info: $(TEXI_GCC_FILES)
- doc/gccint.info: $(TEXI_GCCINT_FILES)
- doc/cppinternals.info: $(TEXI_CPPINT_FILES)
- 
--doc/%.info: %.texi
--	if [ x$(BUILD_INFO) = xinfo ]; then \
--		$(MAKEINFO) $(MAKEINFOFLAGS) -I . -I $(gcc_docdir) \
--			-I $(gcc_docdir)/include -o $@ $<; \
--	fi
-+doc/%.info:
- 
- # Duplicate entry to handle renaming of gccinstall.info
--doc/gccinstall.info: $(TEXI_GCCINSTALL_FILES)
--	if [ x$(BUILD_INFO) = xinfo ]; then \
--		$(MAKEINFO) $(MAKEINFOFLAGS) -I $(gcc_docdir) \
--			-I $(gcc_docdir)/include -o $@ $<; \
--	fi
-+doc/gccinstall.info:
- 
- doc/cpp.dvi: $(TEXI_CPP_FILES)
- doc/gcc.dvi: $(TEXI_GCC_FILES)
diff --git a/toolchain/gcc/patches/6.2.0/100-uclibc-conf.patch b/toolchain/gcc/patches/6.2.0/100-uclibc-conf.patch
deleted file mode 100644
index ff9ad94f62..0000000000
--- a/toolchain/gcc/patches/6.2.0/100-uclibc-conf.patch
+++ /dev/null
@@ -1,33 +0,0 @@
---- a/contrib/regression/objs-gcc.sh
-+++ b/contrib/regression/objs-gcc.sh
-@@ -106,6 +106,10 @@ if [ $H_REAL_TARGET = $H_REAL_HOST -a $H
-  then
-   make all-gdb all-dejagnu all-ld || exit 1
-   make install-gdb install-dejagnu install-ld || exit 1
-+elif [ $H_REAL_TARGET = $H_REAL_HOST -a $H_REAL_TARGET = i686-pc-linux-uclibc ]
-+ then
-+  make all-gdb all-dejagnu all-ld || exit 1
-+  make install-gdb install-dejagnu install-ld || exit 1
- elif [ $H_REAL_TARGET = $H_REAL_HOST ] ; then
-   make bootstrap || exit 1
-   make install || exit 1
---- a/libjava/classpath/ltconfig
-+++ b/libjava/classpath/ltconfig
-@@ -603,7 +603,7 @@ host_os=`echo $host | sed 's/^\([^-]*\)-
- 
- # Transform linux* to *-*-linux-gnu*, to support old configure scripts.
- case $host_os in
--linux-gnu*) ;;
-+linux-gnu*|linux-uclibc*) ;;
- linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`
- esac
- 
-@@ -1247,7 +1247,7 @@ linux-gnuoldld* | linux-gnuaout* | linux
-   ;;
- 
- # This must be Linux ELF.
--linux-gnu*)
-+linux*)
-   version_type=linux
-   need_lib_prefix=no
-   need_version=no
diff --git a/toolchain/gcc/patches/6.2.0/230-musl_libssp.patch b/toolchain/gcc/patches/6.2.0/230-musl_libssp.patch
deleted file mode 100644
index 8dfd1fc287..0000000000
--- a/toolchain/gcc/patches/6.2.0/230-musl_libssp.patch
+++ /dev/null
@@ -1,13 +0,0 @@
---- a/gcc/gcc.c
-+++ b/gcc/gcc.c
-@@ -858,7 +858,9 @@ proper position among the other output f
- #endif
- 
- #ifndef LINK_SSP_SPEC
--#ifdef TARGET_LIBC_PROVIDES_SSP
-+#if DEFAULT_LIBC == LIBC_MUSL
-+#define LINK_SSP_SPEC "-lssp_nonshared"
-+#elif defined(TARGET_LIBC_PROVIDES_SSP)
- #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
- 		       "|fstack-protector-strong|fstack-protector-explicit:}"
- #else
diff --git a/toolchain/gcc/patches/6.2.0/280-musl-disable-ifunc-by-default.patch b/toolchain/gcc/patches/6.2.0/280-musl-disable-ifunc-by-default.patch
deleted file mode 100644
index af5acf8cc9..0000000000
--- a/toolchain/gcc/patches/6.2.0/280-musl-disable-ifunc-by-default.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-From 450fb05e2a7510d37744f044009f8237d902f65c Mon Sep 17 00:00:00 2001
-From: nsz <nsz@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Tue, 30 Aug 2016 10:26:22 +0000
-Subject: [PATCH] disable ifunc on *-musl by default
-
-gcc/
-	* config.gcc (*-*-*musl*): Disable gnu-indirect-function.
-
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@239859 138bc75d-0d04-0410-961f-82ee72b054a4
----
- gcc/ChangeLog  | 4 ++++
- gcc/config.gcc | 4 ++--
- 2 files changed, 6 insertions(+), 2 deletions(-)
-
-diff --git a/gcc/config.gcc b/gcc/config.gcc
-index 8827dc8..e544d76 100644
---- a/gcc/config.gcc
-+++ b/gcc/config.gcc
-@@ -1465,7 +1465,7 @@ i[34567]86-*-linux* | i[34567]86-*-kfreebsd*-gnu | i[34567]86-*-gnu* | i[34567]8
- 		extra_options="${extra_options} linux-android.opt"
- 		# Assume modern glibc if not targeting Android nor uclibc.
- 		case ${target} in
--		*-*-*android*|*-*-*uclibc*)
-+		*-*-*android*|*-*-*uclibc*|*-*-*musl*)
- 		  ;;
- 		*)
- 		  default_gnu_indirect_function=yes
-@@ -1531,7 +1531,7 @@ x86_64-*-linux* | x86_64-*-kfreebsd*-gnu)
- 		extra_options="${extra_options} linux-android.opt"
- 		# Assume modern glibc if not targeting Android nor uclibc.
- 		case ${target} in
--		*-*-*android*|*-*-*uclibc*)
-+		*-*-*android*|*-*-*uclibc*|*-*-*musl*)
- 		  ;;
- 		*)
- 		  default_gnu_indirect_function=yes
diff --git a/toolchain/gcc/patches/6.2.0/300-mips_Os_cpu_rtx_cost_model.patch b/toolchain/gcc/patches/6.2.0/300-mips_Os_cpu_rtx_cost_model.patch
deleted file mode 100644
index d76bd8cb1d..0000000000
--- a/toolchain/gcc/patches/6.2.0/300-mips_Os_cpu_rtx_cost_model.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/gcc/config/mips/mips.c
-+++ b/gcc/config/mips/mips.c
-@@ -17928,7 +17928,7 @@ mips_option_override (void)
-     flag_pcc_struct_return = 0;
- 
-   /* Decide which rtx_costs structure to use.  */
--  if (optimize_size)
-+  if (0 && optimize_size)
-     mips_cost = &mips_rtx_cost_optimize_size;
-   else
-     mips_cost = &mips_rtx_cost_data[mips_tune];
diff --git a/toolchain/gcc/patches/6.2.0/800-arm_v5te_no_ldrd_strd.patch b/toolchain/gcc/patches/6.2.0/800-arm_v5te_no_ldrd_strd.patch
deleted file mode 100644
index 2e7c23f851..0000000000
--- a/toolchain/gcc/patches/6.2.0/800-arm_v5te_no_ldrd_strd.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/gcc/config/arm/arm.h
-+++ b/gcc/config/arm/arm.h
-@@ -166,7 +166,7 @@ extern void (*arm_lang_output_object_att
- /* Thumb-1 only.  */
- #define TARGET_THUMB1_ONLY		(TARGET_THUMB1 && !arm_arch_notm)
- 
--#define TARGET_LDRD			(arm_arch5e && ARM_DOUBLEWORD_ALIGN \
-+#define TARGET_LDRD			(arm_arch6 && ARM_DOUBLEWORD_ALIGN \
-                                          && !TARGET_THUMB1)
- 
- #define TARGET_CRC32			(arm_arch_crc)
diff --git a/toolchain/gcc/patches/6.2.0/810-arm-softfloat-libgcc.patch b/toolchain/gcc/patches/6.2.0/810-arm-softfloat-libgcc.patch
deleted file mode 100644
index 1d06f5b2ec..0000000000
--- a/toolchain/gcc/patches/6.2.0/810-arm-softfloat-libgcc.patch
+++ /dev/null
@@ -1,25 +0,0 @@
---- a/libgcc/config/arm/t-linux
-+++ b/libgcc/config/arm/t-linux
-@@ -1,6 +1,10 @@
- LIB1ASMSRC = arm/lib1funcs.S
- LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \
--	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3
-+	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3 \
-+	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
-+	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
-+	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
-+	_arm_fixsfsi _arm_fixunssfsi
- 
- # Just for these, we omit the frame pointer since it makes such a big
- # difference.
---- a/gcc/config/arm/linux-elf.h
-+++ b/gcc/config/arm/linux-elf.h
-@@ -60,8 +60,6 @@
-    %{shared:-lc} \
-    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
- 
--#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
--
- #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
- 
- #define LINUX_TARGET_LINK_SPEC  "%{h*} \
diff --git a/toolchain/gcc/patches/6.2.0/820-libgcc_pic.patch b/toolchain/gcc/patches/6.2.0/820-libgcc_pic.patch
deleted file mode 100644
index f925d96f66..0000000000
--- a/toolchain/gcc/patches/6.2.0/820-libgcc_pic.patch
+++ /dev/null
@@ -1,36 +0,0 @@
---- a/libgcc/Makefile.in
-+++ b/libgcc/Makefile.in
-@@ -888,11 +888,12 @@ $(libgcov-driver-objects): %$(objext): $
- 
- # Static libraries.
- libgcc.a: $(libgcc-objects)
-+libgcc_pic.a: $(libgcc-s-objects)
- libgcov.a: $(libgcov-objects)
- libunwind.a: $(libunwind-objects)
- libgcc_eh.a: $(libgcc-eh-objects)
- 
--libgcc.a libgcov.a libunwind.a libgcc_eh.a:
-+libgcc.a libgcov.a libunwind.a libgcc_eh.a libgcc_pic.a:
- 	-rm -f $@
- 
- 	objects="$(objects)";					\
-@@ -913,7 +914,7 @@ all: libunwind.a
- endif
- 
- ifeq ($(enable_shared),yes)
--all: libgcc_eh.a libgcc_s$(SHLIB_EXT)
-+all: libgcc_eh.a libgcc_pic.a libgcc_s$(SHLIB_EXT)
- ifneq ($(LIBUNWIND),)
- all: libunwind$(SHLIB_EXT)
- libgcc_s$(SHLIB_EXT): libunwind$(SHLIB_EXT)
-@@ -1115,6 +1116,10 @@ install-shared:
- 	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a
- 	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a
- 
-+	$(INSTALL_DATA) libgcc_pic.a $(mapfile) $(DESTDIR)$(inst_libdir)/
-+	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_pic.a
-+	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_pic.a
-+
- 	$(subst @multilib_dir@,$(MULTIDIR),$(subst \
- 		@shlib_base_name@,libgcc_s,$(subst \
- 		@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(SHLIB_INSTALL))))
diff --git a/toolchain/gcc/patches/6.2.0/830-arm_unbreak_armv4t.patch b/toolchain/gcc/patches/6.2.0/830-arm_unbreak_armv4t.patch
deleted file mode 100644
index 37f8f2a54d..0000000000
--- a/toolchain/gcc/patches/6.2.0/830-arm_unbreak_armv4t.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-http://sourceware.org/ml/crossgcc/2008-05/msg00009.html
-
---- a/gcc/config/arm/linux-eabi.h
-+++ b/gcc/config/arm/linux-eabi.h
-@@ -45,7 +45,7 @@
-    The ARM10TDMI core is the default for armv5t, so set
-    SUBTARGET_CPU_DEFAULT to achieve this.  */
- #undef  SUBTARGET_CPU_DEFAULT
--#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
-+#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9tdmi
- 
- /* TARGET_BIG_ENDIAN_DEFAULT is set in
-    config.gcc for big endian configurations.  */
diff --git a/toolchain/gcc/patches/6.2.0/840-armv4_pass_fix-v4bx_to_ld.patch b/toolchain/gcc/patches/6.2.0/840-armv4_pass_fix-v4bx_to_ld.patch
deleted file mode 100644
index cb1fb98235..0000000000
--- a/toolchain/gcc/patches/6.2.0/840-armv4_pass_fix-v4bx_to_ld.patch
+++ /dev/null
@@ -1,19 +0,0 @@
---- a/gcc/config/arm/linux-eabi.h
-+++ b/gcc/config/arm/linux-eabi.h
-@@ -94,10 +94,15 @@
- #define MUSL_DYNAMIC_LINKER \
-   "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
- 
-+/* For armv4 we pass --fix-v4bx to linker to support EABI */
-+#undef TARGET_FIX_V4BX_SPEC
-+#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*"\
-+  "|march=armv4|mcpu=fa526|mcpu=fa626:--fix-v4bx}"
-+
- /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
-    use the GNU/Linux version, not the generic BPABI version.  */
- #undef  LINK_SPEC
--#define LINK_SPEC EABI_LINK_SPEC					\
-+#define LINK_SPEC EABI_LINK_SPEC TARGET_FIX_V4BX_SPEC			\
-   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,				\
- 		       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
- 
diff --git a/toolchain/gcc/patches/6.2.0/850-use_shared_libgcc.patch b/toolchain/gcc/patches/6.2.0/850-use_shared_libgcc.patch
deleted file mode 100644
index cd20244c69..0000000000
--- a/toolchain/gcc/patches/6.2.0/850-use_shared_libgcc.patch
+++ /dev/null
@@ -1,47 +0,0 @@
---- a/gcc/config/arm/linux-eabi.h
-+++ b/gcc/config/arm/linux-eabi.h
-@@ -132,10 +132,6 @@
-   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} "	\
-   LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
- 
--/* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
--   do not use -lfloat.  */
--#undef LIBGCC_SPEC
--
- /* Clear the instruction cache from `beg' to `end'.  This is
-    implemented in lib1funcs.S, so ensure an error if this definition
-    is used.  */
---- a/gcc/config/linux.h
-+++ b/gcc/config/linux.h
-@@ -53,6 +53,10 @@ see the files COPYING3 and COPYING.RUNTI
- 	builtin_assert ("system=posix");			\
-     } while (0)
- 
-+#ifndef LIBGCC_SPEC
-+#define LIBGCC_SPEC "%{static|static-libgcc:-lgcc}%{!static:%{!static-libgcc:-lgcc_s}}"
-+#endif
-+
- /* Determine which dynamic linker to use depending on whether GLIBC or
-    uClibc or Bionic or musl is the default C library and whether
-    -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
---- a/libgcc/mkmap-symver.awk
-+++ b/libgcc/mkmap-symver.awk
-@@ -132,5 +132,5 @@ function output(lib) {
-   else if (inherit[lib])
-     printf("} %s;\n", inherit[lib]);
-   else
--    printf ("\n  local:\n\t*;\n};\n");
-+    printf ("\n\t*;\n};\n");
- }
---- a/gcc/config/rs6000/linux.h
-+++ b/gcc/config/rs6000/linux.h
-@@ -60,6 +60,9 @@
- #undef	CPP_OS_DEFAULT_SPEC
- #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
- 
-+#undef LIBGCC_SPEC
-+#define LIBGCC_SPEC "%{!static:%{!static-libgcc:-lgcc_s}} -lgcc"
-+
- #undef  LINK_SHLIB_SPEC
- #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
- 
diff --git a/toolchain/gcc/patches/6.2.0/851-libgcc_no_compat.patch b/toolchain/gcc/patches/6.2.0/851-libgcc_no_compat.patch
deleted file mode 100644
index 80c3476841..0000000000
--- a/toolchain/gcc/patches/6.2.0/851-libgcc_no_compat.patch
+++ /dev/null
@@ -1,12 +0,0 @@
---- a/libgcc/config/t-libunwind
-+++ b/libgcc/config/t-libunwind
-@@ -2,8 +2,7 @@
- 
- HOST_LIBGCC2_CFLAGS += -DUSE_GAS_SYMVER
- 
--LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
--  $(srcdir)/unwind-compat.c $(srcdir)/unwind-dw2-fde-compat.c
-+LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
- LIB2ADDEHSTATIC = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
- 
- # Override the default value from t-slibgcc-elf-ver and mention -lunwind
diff --git a/toolchain/gcc/patches/6.2.0/870-ppc_no_crtsavres.patch b/toolchain/gcc/patches/6.2.0/870-ppc_no_crtsavres.patch
deleted file mode 100644
index c1eaf975c3..0000000000
--- a/toolchain/gcc/patches/6.2.0/870-ppc_no_crtsavres.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/gcc/config/rs6000/rs6000.c
-+++ b/gcc/config/rs6000/rs6000.c
-@@ -24141,7 +24141,7 @@ rs6000_savres_strategy (rs6000_stack_t *
-   /* Define cutoff for using out-of-line functions to save registers.  */
-   if (DEFAULT_ABI == ABI_V4 || TARGET_ELF)
-     {
--      if (!optimize_size)
-+      if (1)
- 	{
- 	  strategy |= SAVE_INLINE_FPRS | REST_INLINE_FPRS;
- 	  strategy |= SAVE_INLINE_GPRS | REST_INLINE_GPRS;
diff --git a/toolchain/gcc/patches/6.2.0/880-no_java_section.patch b/toolchain/gcc/patches/6.2.0/880-no_java_section.patch
deleted file mode 100644
index 0fa9e627c2..0000000000
--- a/toolchain/gcc/patches/6.2.0/880-no_java_section.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/gcc/defaults.h
-+++ b/gcc/defaults.h
-@@ -395,7 +395,7 @@ see the files COPYING3 and COPYING.RUNTI
- /* If we have named section and we support weak symbols, then use the
-    .jcr section for recording java classes which need to be registered
-    at program start-up time.  */
--#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
-+#if 0 && defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
- #ifndef JCR_SECTION_NAME
- #define JCR_SECTION_NAME ".jcr"
- #endif
diff --git a/toolchain/gcc/patches/6.2.0/881-no_tm_section.patch b/toolchain/gcc/patches/6.2.0/881-no_tm_section.patch
deleted file mode 100644
index fab5db3be5..0000000000
--- a/toolchain/gcc/patches/6.2.0/881-no_tm_section.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/libgcc/crtstuff.c
-+++ b/libgcc/crtstuff.c
-@@ -152,7 +152,7 @@ call_ ## FUNC (void)					\
- #endif
- 
- #if !defined(USE_TM_CLONE_REGISTRY) && defined(OBJECT_FORMAT_ELF)
--# define USE_TM_CLONE_REGISTRY 1
-+# define USE_TM_CLONE_REGISTRY 0
- #endif
- 
- /* We do not want to add the weak attribute to the declarations of these
diff --git a/toolchain/gcc/patches/6.2.0/900-bad-mips16-crt.patch b/toolchain/gcc/patches/6.2.0/900-bad-mips16-crt.patch
deleted file mode 100644
index dd6e9dc889..0000000000
--- a/toolchain/gcc/patches/6.2.0/900-bad-mips16-crt.patch
+++ /dev/null
@@ -1,9 +0,0 @@
---- a/libgcc/config/mips/t-mips16
-+++ b/libgcc/config/mips/t-mips16
-@@ -43,3 +43,6 @@ SYNC_CFLAGS = -mno-mips16
- 
- # Version these symbols if building libgcc.so.
- SHLIB_MAPFILES += $(srcdir)/config/mips/libgcc-mips16.ver
-+
-+CRTSTUFF_T_CFLAGS += -mno-mips16
-+CRTSTUFF_T_CFLAGS_S += -mno-mips16
diff --git a/toolchain/gcc/patches/6.2.0/910-mbsd_multi.patch b/toolchain/gcc/patches/6.2.0/910-mbsd_multi.patch
deleted file mode 100644
index 62203dfcf6..0000000000
--- a/toolchain/gcc/patches/6.2.0/910-mbsd_multi.patch
+++ /dev/null
@@ -1,222 +0,0 @@
-
-	This patch brings over a few features from MirBSD:
-	* -fhonour-copts
-	  If this option is not given, it's warned (depending
-	  on environment variables). This is to catch errors
-	  of misbuilt packages which override CFLAGS themselves.
-	* -Werror-maybe-reset
-	  Has the effect of -Wno-error if GCC_NO_WERROR is
-	  set and not '0', a no-operation otherwise. This is
-	  to be able to use -Werror in "make" but prevent
-	  GNU autoconf generated configure scripts from
-	  freaking out.
-
-	This patch was authored by Thorsten Glaser <tg at mirbsd.de>
-	with copyright assignment to the FSF in effect.
-
---- a/gcc/c-family/c-opts.c
-+++ b/gcc/c-family/c-opts.c
-@@ -107,6 +107,9 @@ static int class_dump_flags;
- /* Whether any standard preincluded header has been preincluded.  */
- static bool done_preinclude;
- 
-+/* Check if a port honours COPTS.  */
-+static int honour_copts = 0;
-+
- static void handle_OPT_d (const char *);
- static void set_std_cxx98 (int);
- static void set_std_cxx11 (int);
-@@ -442,6 +445,12 @@ c_common_handle_option (size_t scode, co
-       flag_no_builtin = !value;
-       break;
- 
-+    case OPT_fhonour_copts:
-+      if (c_language == clk_c) {
-+        honour_copts++;
-+      }
-+      break;
-+
-     case OPT_fconstant_string_class_:
-       constant_string_class_name = arg;
-       break;
-@@ -1041,6 +1050,47 @@ c_common_init (void)
-       return false;
-     }
- 
-+  if (c_language == clk_c) {
-+    char *ev = getenv ("GCC_HONOUR_COPTS");
-+    int evv;
-+    if (ev == NULL)
-+      evv = -1;
-+    else if ((*ev == '0') || (*ev == '\0'))
-+      evv = 0;
-+    else if (*ev == '1')
-+      evv = 1;
-+    else if (*ev == '2')
-+      evv = 2;
-+    else if (*ev == 's')
-+      evv = -1;
-+    else {
-+      warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
-+      evv = 1; /* maybe depend this on something like MIRBSD_NATIVE?  */
-+    }
-+    if (evv == 1) {
-+      if (honour_copts == 0) {
-+        error ("someone does not honour COPTS at all in lenient mode");
-+        return false;
-+      } else if (honour_copts != 1) {
-+        warning (0, "someone does not honour COPTS correctly, passed %d times",
-+         honour_copts);
-+      }
-+    } else if (evv == 2) {
-+      if (honour_copts == 0) {
-+        error ("someone does not honour COPTS at all in strict mode");
-+        return false;
-+      } else if (honour_copts != 1) {
-+        error ("someone does not honour COPTS correctly, passed %d times",
-+         honour_copts);
-+        return false;
-+      }
-+    } else if (evv == 0) {
-+      if (honour_copts != 1)
-+        inform (0, "someone does not honour COPTS correctly, passed %d times",
-+         honour_copts);
-+    }
-+  }
-+
-   return true;
- }
- 
---- a/gcc/c-family/c.opt
-+++ b/gcc/c-family/c.opt
-@@ -438,6 +438,10 @@ Wfloat-conversion
- C ObjC C++ ObjC++ Var(warn_float_conversion) Warning LangEnabledBy(C ObjC C++ ObjC++,Wconversion)
- Warn for implicit type conversions that cause loss of floating point precision.
- 
-+Werror-maybe-reset
-+C ObjC C++ ObjC++
-+; Documented in common.opt
-+
- Wfloat-equal
- C ObjC C++ ObjC++ Var(warn_float_equal) Warning
- Warn if testing floating point numbers for equality.
-@@ -1252,6 +1256,9 @@ C++ ObjC++ Optimization Alias(fexception
- fhonor-std
- C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
- 
-+fhonour-copts
-+C ObjC C++ ObjC++ RejectNegative
-+
- fhosted
- C ObjC
- Assume normal C execution environment.
---- a/gcc/common.opt
-+++ b/gcc/common.opt
-@@ -581,6 +581,10 @@ Werror=
- Common Joined
- Treat specified warning as error.
- 
-+Werror-maybe-reset
-+Common
-+If environment variable GCC_NO_WERROR is set, act as -Wno-error
-+
- Wextra
- Common Var(extra_warnings) Warning
- Print extra (possibly unwanted) warnings.
-@@ -1432,6 +1436,9 @@ fguess-branch-probability
- Common Report Var(flag_guess_branch_prob) Optimization
- Enable guessing of branch probabilities.
- 
-+fhonour-copts
-+Common RejectNegative
-+
- ; Nonzero means ignore `#ident' directives.  0 means handle them.
- ; Generate position-independent code for executables if possible
- ; On SVR4 targets, it also controls whether or not to emit a
---- a/gcc/opts.c
-+++ b/gcc/opts.c
-@@ -1783,6 +1783,17 @@ common_handle_option (struct gcc_options
- 			       opts, opts_set, loc, dc);
-       break;
- 
-+    case OPT_Werror_maybe_reset:
-+      {
-+        char *ev = getenv ("GCC_NO_WERROR");
-+        if ((ev != NULL) && (*ev != '0'))
-+          warnings_are_errors = 0;
-+      }
-+      break;
-+
-+    case OPT_fhonour_copts:
-+      break;
-+
-     case OPT_Wlarger_than_:
-       opts->x_larger_than_size = value;
-       opts->x_warn_larger_than = value != -1;
---- a/gcc/doc/cppopts.texi
-+++ b/gcc/doc/cppopts.texi
-@@ -163,6 +163,11 @@ in older programs.  This warning is on b
- Make all warnings into hard errors.  Source code which triggers warnings
- will be rejected.
- 
-+ at item -Werror-maybe-reset
-+ at opindex Werror-maybe-reset
-+Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
-+variable is set to anything other than 0 or empty.
-+
- @item -Wsystem-headers
- @opindex Wsystem-headers
- Issue warnings for code in system headers.  These are normally unhelpful
---- a/gcc/doc/invoke.texi
-+++ b/gcc/doc/invoke.texi
-@@ -263,7 +263,7 @@ Objective-C and Objective-C++ Dialects}.
- -Wno-discarded-qualifiers -Wno-discarded-array-qualifiers @gol
- -Wno-div-by-zero -Wdouble-promotion -Wduplicated-cond @gol
- -Wempty-body  -Wenum-compare -Wno-endif-labels @gol
---Werror  -Werror=* -Wfatal-errors -Wfloat-equal  -Wformat  -Wformat=2 @gol
-+-Werror  -Werror=* -Werror-maybe-reset -Wfatal-errors -Wfloat-equal  -Wformat  -Wformat=2 @gol
- -Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol
- -Wformat-security  -Wformat-signedness  -Wformat-y2k -Wframe-address @gol
- -Wframe-larger-than=@var{len} -Wno-free-nonheap-object -Wjump-misses-init @gol
-@@ -5737,6 +5737,22 @@ This option is only supported for C and
- @option{-Wall} and by @option{-Wpedantic}, which can be disabled with
- @option{-Wno-pointer-sign}.
- 
-+ at item -Werror-maybe-reset
-+ at opindex Werror-maybe-reset
-+Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
-+variable is set to anything other than 0 or empty.
-+
-+ at item -fhonour-copts
-+ at opindex fhonour-copts
-+If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
-+given at least once, and warn if it is given more than once.
-+If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
-+given exactly once.
-+If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option
-+is not given exactly once.
-+The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}.
-+This flag and environment variable only affect the C language.
-+
- @item -Wstack-protector
- @opindex Wstack-protector
- @opindex Wno-stack-protector
-@@ -6605,7 +6621,7 @@ so, the first branch is redirected to ei
- second branch or a point immediately following it, depending on whether
- the condition is known to be true or false.
- 
--Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.
-+Enabled at levels @option{-O3}.
- 
- @item -fsplit-wide-types
- @opindex fsplit-wide-types
---- a/gcc/java/jvspec.c
-+++ b/gcc/java/jvspec.c
-@@ -629,6 +629,7 @@ lang_specific_pre_link (void)
-      class name.  Append dummy `.c' that can be stripped by set_input so %b
-      is correct.  */ 
-   set_input (concat (main_class_name, "main.c", NULL));
-+  putenv ("GCC_HONOUR_COPTS=s"); /* XXX hack!  */
-   err = do_spec (jvgenmain_spec);
-   if (err == 0)
-     {
diff --git a/toolchain/gcc/patches/6.2.0/920-specs_nonfatal_getenv.patch b/toolchain/gcc/patches/6.2.0/920-specs_nonfatal_getenv.patch
deleted file mode 100644
index dc0acb95a8..0000000000
--- a/toolchain/gcc/patches/6.2.0/920-specs_nonfatal_getenv.patch
+++ /dev/null
@@ -1,15 +0,0 @@
---- a/gcc/gcc.c
-+++ b/gcc/gcc.c
-@@ -9198,8 +9198,10 @@ getenv_spec_function (int argc, const ch
-     value = varname;
- 
-   if (!value)
--    fatal_error (input_location,
--		 "environment variable %qs not defined", varname);
-+    {
-+      warning (input_location, "environment variable %qs not defined", varname);
-+      value = "";
-+    }
- 
-   /* We have to escape every character of the environment variable so
-      they are not interpreted as active spec characters.  A
diff --git a/toolchain/gcc/patches/6.2.0/930-fix-mips-noexecstack.patch b/toolchain/gcc/patches/6.2.0/930-fix-mips-noexecstack.patch
deleted file mode 100644
index 2a99840b63..0000000000
--- a/toolchain/gcc/patches/6.2.0/930-fix-mips-noexecstack.patch
+++ /dev/null
@@ -1,111 +0,0 @@
-From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 2001
-From: Andrew McDonnell <bugs@andrewmcdonnell.net>
-Date: Fri, 3 Oct 2014 19:09:00 +0930
-Subject: Add .note.GNU-stack section
-
-See http://lists.busybox.net/pipermail/uclibc/2014-October/048671.html
-Below copied from https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02430.html
-
-Re: [Patch, MIPS] Add .note.GNU-stack section
-
-    From: Steve Ellcey <sellcey at mips dot com>
-
-On Wed, 2014-09-10 at 10:15 -0700, Eric Christopher wrote:
->
->
-> On Wed, Sep 10, 2014 at 9:27 AM, <pinskia@gmail.com> wrote:
-
->         This works except you did not update the assembly files in
->         libgcc or glibc. We (Cavium) have the same patch in our tree
->         for a few released versions.
-
-> Mind just checking yours in then Andrew?
-
-> Thanks!
-> -eric
-
-I talked to Andrew about what files he changed in GCC and created and
-tested this new patch.  Andrew also mentioned changing some assembly
-files in glibc but I don't see any use of '.section .note.GNU-stack' in
-any assembly files in glibc (for any platform) so I wasn't planning on
-creating a glibc to add them to mips glibc assembly language files.
-
-OK to check in this patch?
-
-Steve Ellcey
-sellcey@mips.com
-
-
-
-2014-09-26  Steve Ellcey  <sellcey@mips.com>
----
- gcc/config/mips/mips.c          | 3 +++
- libgcc/config/mips/crti.S       | 4 ++++
- libgcc/config/mips/crtn.S       | 3 +++
- libgcc/config/mips/mips16.S     | 4 ++++
- libgcc/config/mips/vr4120-div.S | 4 ++++
- 5 files changed, 18 insertions(+)
-
---- a/gcc/config/mips/mips.c
-+++ b/gcc/config/mips/mips.c
-@@ -20228,6 +20228,9 @@ mips_promote_function_mode (const_tree t
- #undef TARGET_HARD_REGNO_SCRATCH_OK
- #define TARGET_HARD_REGNO_SCRATCH_OK mips_hard_regno_scratch_ok
- 
-+#undef TARGET_ASM_FILE_END
-+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
-+
- struct gcc_target targetm = TARGET_INITIALIZER;
- 
- #include "gt-mips.h"
---- a/libgcc/config/mips/crti.S
-+++ b/libgcc/config/mips/crti.S
-@@ -21,6 +21,10 @@ a copy of the GCC Runtime Library Except
- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
- <http://www.gnu.org/licenses/>.  */
- 
-+
-+/* An executable stack is *not* required for these functions.  */
-+	.section .note.GNU-stack,"",%progbits
-+
- /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
-    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
- 
---- a/libgcc/config/mips/crtn.S
-+++ b/libgcc/config/mips/crtn.S
-@@ -21,6 +21,9 @@ a copy of the GCC Runtime Library Except
- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
- <http://www.gnu.org/licenses/>.  */
- 
-+/* An executable stack is *not* required for these functions.  */
-+	.section .note.GNU-stack,"",%progbits
-+
- /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
-    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
- 
---- a/libgcc/config/mips/mips16.S
-+++ b/libgcc/config/mips/mips16.S
-@@ -48,6 +48,10 @@ see the files COPYING3 and COPYING.RUNTI
-    values using the soft-float calling convention, but do the actual
-    operation using the hard floating point instructions.  */
- 
-+/* An executable stack is *not* required for these functions.  */
-+	.section .note.GNU-stack,"",%progbits
-+	.previous
-+
- #if defined _MIPS_SIM && (_MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABIO64)
- 
- /* This file contains 32-bit assembly code.  */
---- a/libgcc/config/mips/vr4120-div.S
-+++ b/libgcc/config/mips/vr4120-div.S
-@@ -26,6 +26,10 @@ see the files COPYING3 and COPYING.RUNTI
-    -mfix-vr4120.  div and ddiv do not give the correct result when one
-    of the operands is negative.  */
- 
-+/* An executable stack is *not* required for these functions.  */
-+	.section .note.GNU-stack,"",%progbits
-+	.previous
-+
- 	.set	nomips16
- 
- #define DIV								\
diff --git a/toolchain/gcc/patches/6.2.0/940-no-clobber-stamp-bits.patch b/toolchain/gcc/patches/6.2.0/940-no-clobber-stamp-bits.patch
deleted file mode 100644
index 65f59fcfa7..0000000000
--- a/toolchain/gcc/patches/6.2.0/940-no-clobber-stamp-bits.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/libstdc++-v3/include/Makefile.in
-+++ b/libstdc++-v3/include/Makefile.in
-@@ -1458,7 +1458,7 @@ stamp-bits: ${bits_headers}
- 	@$(STAMP) stamp-bits
- 
- stamp-bits-sup: stamp-bits ${bits_sup_headers}
--	@-cd ${bits_builddir} && $(LN_S) $? . 2>/dev/null
-+	@-cd ${bits_builddir} && $(LN_S) $(filter-out stamp-bits,$?) . 2>/dev/null
- 	@$(STAMP) stamp-bits-sup
- 
- stamp-c_base: ${c_base_headers}
diff --git a/toolchain/gcc/patches/6.2.0/950-cpp_file_path_translation.patch b/toolchain/gcc/patches/6.2.0/950-cpp_file_path_translation.patch
deleted file mode 100644
index d467eb7c9a..0000000000
--- a/toolchain/gcc/patches/6.2.0/950-cpp_file_path_translation.patch
+++ /dev/null
@@ -1,182 +0,0 @@
-Forward ported from attachment to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47047
-
---- a/gcc/c-family/c-opts.c
-+++ b/gcc/c-family/c-opts.c
-@@ -574,6 +574,10 @@ c_common_handle_option (size_t scode, co
-       add_path (xstrdup (arg), SYSTEM, 0, true);
-       break;
- 
-+    case OPT_iremap:
-+      add_cpp_remap_path (arg);
-+      break;
-+
-     case OPT_iwithprefix:
-       add_prefixed_path (arg, SYSTEM);
-       break;
---- a/gcc/c-family/c.opt
-+++ b/gcc/c-family/c.opt
-@@ -1632,6 +1632,10 @@ iquote
- C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
- -iquote <dir>	Add <dir> to the end of the quote include path.
- 
-+iremap
-+C ObjC C++ ObjC++ Joined Separate
-+-iremap <src:dst>  Convert <src> to <dst> if it occurs as prefix in __FILE__.
-+
- iwithprefix
- C ObjC C++ ObjC++ Joined Separate
- -iwithprefix <dir>	Add <dir> to the end of the system include path.
---- a/gcc/doc/cpp.texi
-+++ b/gcc/doc/cpp.texi
-@@ -4444,6 +4444,7 @@ without notice.
- @c man begin SYNOPSIS
- cpp [@option{-D}@var{macro}[=@var{defn}]@dots{}] [@option{-U}@var{macro}]
-     [@option{-I}@var{dir}@dots{}] [@option{-iquote}@var{dir}@dots{}]
-+    [@option{-iremap}@var{src}:@var{dst}]
-     [@option{-W}@var{warn}@dots{}]
-     [@option{-M}|@option{-MM}] [@option{-MG}] [@option{-MF} @var{filename}]
-     [@option{-MP}] [@option{-MQ} @var{target}@dots{}]
---- a/gcc/doc/cppopts.texi
-+++ b/gcc/doc/cppopts.texi
-@@ -532,6 +532,12 @@ Search @var{dir} only for header files r
- If @var{dir} begins with @code{=}, then the @code{=} will be replaced
- by the sysroot prefix; see @option{--sysroot} and @option{-isysroot}.
- 
-+@item -iremap @var{src}:@var{dst}
-+@opindex iremap
-+Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
-+This option can be specified more than once.  Processing stops at the first
-+match.
-+
- @item -fdirectives-only
- @opindex fdirectives-only
- When preprocessing, handle directives, but do not expand macros.
---- a/gcc/doc/invoke.texi
-+++ b/gcc/doc/invoke.texi
-@@ -476,8 +476,8 @@ Objective-C and Objective-C++ Dialects}.
- @item Directory Options
- @xref{Directory Options,,Options for Directory Search}.
- @gccoptlist{-B@var{prefix} -I@var{dir} -iplugindir=@var{dir} @gol
---iquote@var{dir} -L@var{dir} -no-canonical-prefixes -I- @gol
----sysroot=@var{dir} --no-sysroot-suffix}
-+-iquote@var{dir} -iremap@var{src}:@var{dst} -L@var{dir} -no-canonical-prefixes @gol
-+-I- --sysroot=@var{dir} --no-sysroot-suffix}
- 
- @item Code Generation Options
- @xref{Code Gen Options,,Options for Code Generation Conventions}.
-@@ -10861,6 +10861,12 @@ be searched for header files only for th
- "@var{file}"}; they are not searched for @code{#include <@var{file}>},
- otherwise just like @option{-I}.
- 
-+@item -iremap @var{src}:@var{dst}
-+@opindex iremap
-+Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
-+This option can be specified more than once.  Processing stops at the first
-+match.
-+
- @item -L@var{dir}
- @opindex L
- Add directory @var{dir} to the list of directories to be searched
---- a/libcpp/include/cpplib.h
-+++ b/libcpp/include/cpplib.h
-@@ -760,6 +760,9 @@ extern void cpp_set_lang (cpp_reader *,
- /* Set the include paths.  */
- extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
- 
-+/* Provide src:dst pair for __FILE__ remapping.  */
-+extern void add_cpp_remap_path (const char *);
-+
- /* Call these to get pointers to the options, callback, and deps
-    structures for a given reader.  These pointers are good until you
-    call cpp_finish on that reader.  You can either edit the callbacks
---- a/libcpp/macro.c
-+++ b/libcpp/macro.c
-@@ -227,6 +227,64 @@ static const char * const monthnames[] =
-   "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- };
- 
-+static size_t remap_pairs;
-+static char **remap_src;
-+static char **remap_dst;
-+
-+void
-+add_cpp_remap_path (const char *arg)
-+{
-+  const char *arg_dst;
-+  size_t len;
-+
-+  arg_dst = strchr(arg, ':');
-+  if (arg_dst == NULL)
-+    {
-+      fprintf(stderr, "Invalid argument for -iremap\n");
-+      exit(1);
-+    }
-+
-+  len = arg_dst - arg;
-+  ++arg_dst;
-+
-+  remap_src = (char **) xrealloc(remap_src, sizeof(char *) * (remap_pairs + 1));
-+  remap_dst = (char **) xrealloc(remap_dst, sizeof(char *) * (remap_pairs + 1));
-+
-+  remap_src[remap_pairs] = (char *) xmalloc(len + 1);
-+  memcpy(remap_src[remap_pairs], arg, len);
-+  remap_src[remap_pairs][len] = '\0';
-+  remap_dst[remap_pairs] = xstrdup(arg_dst);
-+  ++remap_pairs;
-+}
-+
-+static const char *
-+cpp_remap_file (const char *arg, char **tmp_name)
-+{
-+  char *result;
-+  size_t i, len;
-+
-+  for (i = 0; i < remap_pairs; ++i)
-+    {
-+      len = strlen (remap_src[i]);
-+      if (strncmp (remap_src[i], arg, len))
-+	continue;
-+      if (arg[len] == '\0')
-+	return xstrdup (remap_dst[i]);
-+      if (arg[len] != '/')
-+	continue;
-+      arg += len;
-+      len = strlen (remap_dst[i]);
-+      result = (char *) xmalloc (len + strlen (arg) + 1);
-+      memcpy(result, remap_dst[i], len);
-+      strcpy(result + len, arg);
-+      *tmp_name = result;
-+
-+      return result;
-+    }
-+
-+   return arg;
-+}
-+
- /* Helper function for builtin_macro.  Returns the text generated by
-    a builtin macro. */
- const uchar *
-@@ -290,6 +348,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
-       {
- 	unsigned int len;
- 	const char *name;
-+	char *tmp_name = NULL;
- 	uchar *buf;
- 	
- 	if (node->value.builtin == BT_FILE)
-@@ -301,6 +360,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
- 	    if (!name)
- 	      abort ();
- 	  }
-+	name = cpp_remap_file (name, &tmp_name);
- 	len = strlen (name);
- 	buf = _cpp_unaligned_alloc (pfile, len * 2 + 3);
- 	result = buf;
-@@ -308,6 +368,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
- 	buf = cpp_quote_string (buf + 1, (const unsigned char *) name, len);
- 	*buf++ = '"';
- 	*buf = '\0';
-+	free (tmp_name);
-       }
-       break;
- 
diff --git a/toolchain/gcc/patches/6.3.0/001-revert_register_mode_search.patch b/toolchain/gcc/patches/6.3.0/001-revert_register_mode_search.patch
new file mode 100644
index 0000000000..bd6fbdb4a9
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/001-revert_register_mode_search.patch
@@ -0,0 +1,65 @@
+Revert of:
+
+commit 275035b56823b26d5fb7e90fad945b998648edf2
+Author: bergner <bergner@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date:   Thu Sep 5 14:09:07 2013 +0000
+
+        PR target/58139
+        * reginfo.c (choose_hard_reg_mode): Scan through all mode classes
+        looking for widest mode.
+
+
+    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202286 138bc75d-0d04-0410-961f-82ee72b054a4
+
+
+--- a/gcc/reginfo.c
++++ b/gcc/reginfo.c
+@@ -625,35 +625,40 @@ choose_hard_reg_mode (unsigned int regno
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
++	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
++  if (found_mode != VOIDmode)
++    return found_mode;
++
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
++	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
++  if (found_mode != VOIDmode)
++    return found_mode;
++
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
++	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
++  if (found_mode != VOIDmode)
++    return found_mode;
++
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
++	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+   if (found_mode != VOIDmode)
diff --git a/toolchain/gcc/patches/6.3.0/002-case_insensitive.patch b/toolchain/gcc/patches/6.3.0/002-case_insensitive.patch
new file mode 100644
index 0000000000..b3d2dbe291
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/002-case_insensitive.patch
@@ -0,0 +1,14 @@
+--- a/include/filenames.h
++++ b/include/filenames.h
+@@ -43,11 +43,6 @@ extern "C" {
+ #  define IS_DIR_SEPARATOR(c) IS_DOS_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_DOS_ABSOLUTE_PATH (f)
+ #else /* not DOSish */
+-#  if defined(__APPLE__)
+-#    ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
+-#      define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
+-#    endif
+-#  endif /* __APPLE__ */
+ #  define HAS_DRIVE_SPEC(f) (0)
+ #  define IS_DIR_SEPARATOR(c) IS_UNIX_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_UNIX_ABSOLUTE_PATH (f)
diff --git a/toolchain/gcc/patches/6.3.0/010-documentation.patch b/toolchain/gcc/patches/6.3.0/010-documentation.patch
new file mode 100644
index 0000000000..2adb28c83d
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/010-documentation.patch
@@ -0,0 +1,23 @@
+--- a/gcc/Makefile.in
++++ b/gcc/Makefile.in
+@@ -3021,18 +3021,10 @@ doc/gcc.info: $(TEXI_GCC_FILES)
+ doc/gccint.info: $(TEXI_GCCINT_FILES)
+ doc/cppinternals.info: $(TEXI_CPPINT_FILES)
+ 
+-doc/%.info: %.texi
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I . -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
++doc/%.info:
+ 
+ # Duplicate entry to handle renaming of gccinstall.info
+-doc/gccinstall.info: $(TEXI_GCCINSTALL_FILES)
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
++doc/gccinstall.info:
+ 
+ doc/cpp.dvi: $(TEXI_CPP_FILES)
+ doc/gcc.dvi: $(TEXI_GCC_FILES)
diff --git a/toolchain/gcc/patches/6.3.0/100-uclibc-conf.patch b/toolchain/gcc/patches/6.3.0/100-uclibc-conf.patch
new file mode 100644
index 0000000000..ff9ad94f62
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/100-uclibc-conf.patch
@@ -0,0 +1,33 @@
+--- a/contrib/regression/objs-gcc.sh
++++ b/contrib/regression/objs-gcc.sh
+@@ -106,6 +106,10 @@ if [ $H_REAL_TARGET = $H_REAL_HOST -a $H
+  then
+   make all-gdb all-dejagnu all-ld || exit 1
+   make install-gdb install-dejagnu install-ld || exit 1
++elif [ $H_REAL_TARGET = $H_REAL_HOST -a $H_REAL_TARGET = i686-pc-linux-uclibc ]
++ then
++  make all-gdb all-dejagnu all-ld || exit 1
++  make install-gdb install-dejagnu install-ld || exit 1
+ elif [ $H_REAL_TARGET = $H_REAL_HOST ] ; then
+   make bootstrap || exit 1
+   make install || exit 1
+--- a/libjava/classpath/ltconfig
++++ b/libjava/classpath/ltconfig
+@@ -603,7 +603,7 @@ host_os=`echo $host | sed 's/^\([^-]*\)-
+ 
+ # Transform linux* to *-*-linux-gnu*, to support old configure scripts.
+ case $host_os in
+-linux-gnu*) ;;
++linux-gnu*|linux-uclibc*) ;;
+ linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`
+ esac
+ 
+@@ -1247,7 +1247,7 @@ linux-gnuoldld* | linux-gnuaout* | linux
+   ;;
+ 
+ # This must be Linux ELF.
+-linux-gnu*)
++linux*)
+   version_type=linux
+   need_lib_prefix=no
+   need_version=no
diff --git a/toolchain/gcc/patches/6.3.0/230-musl_libssp.patch b/toolchain/gcc/patches/6.3.0/230-musl_libssp.patch
new file mode 100644
index 0000000000..8dfd1fc287
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/230-musl_libssp.patch
@@ -0,0 +1,13 @@
+--- a/gcc/gcc.c
++++ b/gcc/gcc.c
+@@ -858,7 +858,9 @@ proper position among the other output f
+ #endif
+ 
+ #ifndef LINK_SSP_SPEC
+-#ifdef TARGET_LIBC_PROVIDES_SSP
++#if DEFAULT_LIBC == LIBC_MUSL
++#define LINK_SSP_SPEC "-lssp_nonshared"
++#elif defined(TARGET_LIBC_PROVIDES_SSP)
+ #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
+ 		       "|fstack-protector-strong|fstack-protector-explicit:}"
+ #else
diff --git a/toolchain/gcc/patches/6.3.0/280-musl-disable-ifunc-by-default.patch b/toolchain/gcc/patches/6.3.0/280-musl-disable-ifunc-by-default.patch
new file mode 100644
index 0000000000..df09e4f636
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/280-musl-disable-ifunc-by-default.patch
@@ -0,0 +1,36 @@
+From 450fb05e2a7510d37744f044009f8237d902f65c Mon Sep 17 00:00:00 2001
+From: nsz <nsz@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 30 Aug 2016 10:26:22 +0000
+Subject: [PATCH] disable ifunc on *-musl by default
+
+gcc/
+	* config.gcc (*-*-*musl*): Disable gnu-indirect-function.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@239859 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog  | 4 ++++
+ gcc/config.gcc | 4 ++--
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+--- a/gcc/config.gcc
++++ b/gcc/config.gcc
+@@ -1495,7 +1495,7 @@ i[34567]86-*-linux* | i[34567]86-*-kfree
+ 		extra_options="${extra_options} linux-android.opt"
+ 		# Assume modern glibc if not targeting Android nor uclibc.
+ 		case ${target} in
+-		*-*-*android*|*-*-*uclibc*)
++		*-*-*android*|*-*-*uclibc*|*-*-*musl*)
+ 		  ;;
+ 		*)
+ 		  default_gnu_indirect_function=yes
+@@ -1564,7 +1564,7 @@ x86_64-*-linux* | x86_64-*-kfreebsd*-gnu
+ 		extra_options="${extra_options} linux-android.opt"
+ 		# Assume modern glibc if not targeting Android nor uclibc.
+ 		case ${target} in
+-		*-*-*android*|*-*-*uclibc*)
++		*-*-*android*|*-*-*uclibc*|*-*-*musl*)
+ 		  ;;
+ 		*)
+ 		  default_gnu_indirect_function=yes
diff --git a/toolchain/gcc/patches/6.3.0/300-mips_Os_cpu_rtx_cost_model.patch b/toolchain/gcc/patches/6.3.0/300-mips_Os_cpu_rtx_cost_model.patch
new file mode 100644
index 0000000000..d76bd8cb1d
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/300-mips_Os_cpu_rtx_cost_model.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/mips/mips.c
++++ b/gcc/config/mips/mips.c
+@@ -17928,7 +17928,7 @@ mips_option_override (void)
+     flag_pcc_struct_return = 0;
+ 
+   /* Decide which rtx_costs structure to use.  */
+-  if (optimize_size)
++  if (0 && optimize_size)
+     mips_cost = &mips_rtx_cost_optimize_size;
+   else
+     mips_cost = &mips_rtx_cost_data[mips_tune];
diff --git a/toolchain/gcc/patches/6.3.0/800-arm_v5te_no_ldrd_strd.patch b/toolchain/gcc/patches/6.3.0/800-arm_v5te_no_ldrd_strd.patch
new file mode 100644
index 0000000000..2e7c23f851
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/800-arm_v5te_no_ldrd_strd.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/arm/arm.h
++++ b/gcc/config/arm/arm.h
+@@ -166,7 +166,7 @@ extern void (*arm_lang_output_object_att
+ /* Thumb-1 only.  */
+ #define TARGET_THUMB1_ONLY		(TARGET_THUMB1 && !arm_arch_notm)
+ 
+-#define TARGET_LDRD			(arm_arch5e && ARM_DOUBLEWORD_ALIGN \
++#define TARGET_LDRD			(arm_arch6 && ARM_DOUBLEWORD_ALIGN \
+                                          && !TARGET_THUMB1)
+ 
+ #define TARGET_CRC32			(arm_arch_crc)
diff --git a/toolchain/gcc/patches/6.3.0/810-arm-softfloat-libgcc.patch b/toolchain/gcc/patches/6.3.0/810-arm-softfloat-libgcc.patch
new file mode 100644
index 0000000000..1d06f5b2ec
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/810-arm-softfloat-libgcc.patch
@@ -0,0 +1,25 @@
+--- a/libgcc/config/arm/t-linux
++++ b/libgcc/config/arm/t-linux
+@@ -1,6 +1,10 @@
+ LIB1ASMSRC = arm/lib1funcs.S
+ LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \
+-	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3
++	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3 \
++	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
++	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
++	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
++	_arm_fixsfsi _arm_fixunssfsi
+ 
+ # Just for these, we omit the frame pointer since it makes such a big
+ # difference.
+--- a/gcc/config/arm/linux-elf.h
++++ b/gcc/config/arm/linux-elf.h
+@@ -60,8 +60,6 @@
+    %{shared:-lc} \
+    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
+ 
+-#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
+-
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
+ #define LINUX_TARGET_LINK_SPEC  "%{h*} \
diff --git a/toolchain/gcc/patches/6.3.0/820-libgcc_pic.patch b/toolchain/gcc/patches/6.3.0/820-libgcc_pic.patch
new file mode 100644
index 0000000000..f925d96f66
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/820-libgcc_pic.patch
@@ -0,0 +1,36 @@
+--- a/libgcc/Makefile.in
++++ b/libgcc/Makefile.in
+@@ -888,11 +888,12 @@ $(libgcov-driver-objects): %$(objext): $
+ 
+ # Static libraries.
+ libgcc.a: $(libgcc-objects)
++libgcc_pic.a: $(libgcc-s-objects)
+ libgcov.a: $(libgcov-objects)
+ libunwind.a: $(libunwind-objects)
+ libgcc_eh.a: $(libgcc-eh-objects)
+ 
+-libgcc.a libgcov.a libunwind.a libgcc_eh.a:
++libgcc.a libgcov.a libunwind.a libgcc_eh.a libgcc_pic.a:
+ 	-rm -f $@
+ 
+ 	objects="$(objects)";					\
+@@ -913,7 +914,7 @@ all: libunwind.a
+ endif
+ 
+ ifeq ($(enable_shared),yes)
+-all: libgcc_eh.a libgcc_s$(SHLIB_EXT)
++all: libgcc_eh.a libgcc_pic.a libgcc_s$(SHLIB_EXT)
+ ifneq ($(LIBUNWIND),)
+ all: libunwind$(SHLIB_EXT)
+ libgcc_s$(SHLIB_EXT): libunwind$(SHLIB_EXT)
+@@ -1115,6 +1116,10 @@ install-shared:
+ 	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 
++	$(INSTALL_DATA) libgcc_pic.a $(mapfile) $(DESTDIR)$(inst_libdir)/
++	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_pic.a
++	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_pic.a
++
+ 	$(subst @multilib_dir@,$(MULTIDIR),$(subst \
+ 		@shlib_base_name@,libgcc_s,$(subst \
+ 		@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(SHLIB_INSTALL))))
diff --git a/toolchain/gcc/patches/6.3.0/830-arm_unbreak_armv4t.patch b/toolchain/gcc/patches/6.3.0/830-arm_unbreak_armv4t.patch
new file mode 100644
index 0000000000..37f8f2a54d
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/830-arm_unbreak_armv4t.patch
@@ -0,0 +1,13 @@
+http://sourceware.org/ml/crossgcc/2008-05/msg00009.html
+
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -45,7 +45,7 @@
+    The ARM10TDMI core is the default for armv5t, so set
+    SUBTARGET_CPU_DEFAULT to achieve this.  */
+ #undef  SUBTARGET_CPU_DEFAULT
+-#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
++#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9tdmi
+ 
+ /* TARGET_BIG_ENDIAN_DEFAULT is set in
+    config.gcc for big endian configurations.  */
diff --git a/toolchain/gcc/patches/6.3.0/840-armv4_pass_fix-v4bx_to_ld.patch b/toolchain/gcc/patches/6.3.0/840-armv4_pass_fix-v4bx_to_ld.patch
new file mode 100644
index 0000000000..cb1fb98235
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/840-armv4_pass_fix-v4bx_to_ld.patch
@@ -0,0 +1,19 @@
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -94,10 +94,15 @@
+ #define MUSL_DYNAMIC_LINKER \
+   "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
+ 
++/* For armv4 we pass --fix-v4bx to linker to support EABI */
++#undef TARGET_FIX_V4BX_SPEC
++#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*"\
++  "|march=armv4|mcpu=fa526|mcpu=fa626:--fix-v4bx}"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
+-#define LINK_SPEC EABI_LINK_SPEC					\
++#define LINK_SPEC EABI_LINK_SPEC TARGET_FIX_V4BX_SPEC			\
+   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,				\
+ 		       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
+ 
diff --git a/toolchain/gcc/patches/6.3.0/850-use_shared_libgcc.patch b/toolchain/gcc/patches/6.3.0/850-use_shared_libgcc.patch
new file mode 100644
index 0000000000..cd20244c69
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/850-use_shared_libgcc.patch
@@ -0,0 +1,47 @@
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -132,10 +132,6 @@
+   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} "	\
+   LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
+ 
+-/* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
+-   do not use -lfloat.  */
+-#undef LIBGCC_SPEC
+-
+ /* Clear the instruction cache from `beg' to `end'.  This is
+    implemented in lib1funcs.S, so ensure an error if this definition
+    is used.  */
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -53,6 +53,10 @@ see the files COPYING3 and COPYING.RUNTI
+ 	builtin_assert ("system=posix");			\
+     } while (0)
+ 
++#ifndef LIBGCC_SPEC
++#define LIBGCC_SPEC "%{static|static-libgcc:-lgcc}%{!static:%{!static-libgcc:-lgcc_s}}"
++#endif
++
+ /* Determine which dynamic linker to use depending on whether GLIBC or
+    uClibc or Bionic or musl is the default C library and whether
+    -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
+--- a/libgcc/mkmap-symver.awk
++++ b/libgcc/mkmap-symver.awk
+@@ -132,5 +132,5 @@ function output(lib) {
+   else if (inherit[lib])
+     printf("} %s;\n", inherit[lib]);
+   else
+-    printf ("\n  local:\n\t*;\n};\n");
++    printf ("\n\t*;\n};\n");
+ }
+--- a/gcc/config/rs6000/linux.h
++++ b/gcc/config/rs6000/linux.h
+@@ -60,6 +60,9 @@
+ #undef	CPP_OS_DEFAULT_SPEC
+ #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
+ 
++#undef LIBGCC_SPEC
++#define LIBGCC_SPEC "%{!static:%{!static-libgcc:-lgcc_s}} -lgcc"
++
+ #undef  LINK_SHLIB_SPEC
+ #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
+ 
diff --git a/toolchain/gcc/patches/6.3.0/851-libgcc_no_compat.patch b/toolchain/gcc/patches/6.3.0/851-libgcc_no_compat.patch
new file mode 100644
index 0000000000..80c3476841
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/851-libgcc_no_compat.patch
@@ -0,0 +1,12 @@
+--- a/libgcc/config/t-libunwind
++++ b/libgcc/config/t-libunwind
+@@ -2,8 +2,7 @@
+ 
+ HOST_LIBGCC2_CFLAGS += -DUSE_GAS_SYMVER
+ 
+-LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
+-  $(srcdir)/unwind-compat.c $(srcdir)/unwind-dw2-fde-compat.c
++LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
+ LIB2ADDEHSTATIC = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
+ 
+ # Override the default value from t-slibgcc-elf-ver and mention -lunwind
diff --git a/toolchain/gcc/patches/6.3.0/870-ppc_no_crtsavres.patch b/toolchain/gcc/patches/6.3.0/870-ppc_no_crtsavres.patch
new file mode 100644
index 0000000000..9e543a0fc2
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/870-ppc_no_crtsavres.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/rs6000/rs6000.c
++++ b/gcc/config/rs6000/rs6000.c
+@@ -24171,7 +24171,7 @@ rs6000_savres_strategy (rs6000_stack_t *
+   /* Define cutoff for using out-of-line functions to save registers.  */
+   if (DEFAULT_ABI == ABI_V4 || TARGET_ELF)
+     {
+-      if (!optimize_size)
++      if (1)
+ 	{
+ 	  strategy |= SAVE_INLINE_FPRS | REST_INLINE_FPRS;
+ 	  strategy |= SAVE_INLINE_GPRS | REST_INLINE_GPRS;
diff --git a/toolchain/gcc/patches/6.3.0/880-no_java_section.patch b/toolchain/gcc/patches/6.3.0/880-no_java_section.patch
new file mode 100644
index 0000000000..0fa9e627c2
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/880-no_java_section.patch
@@ -0,0 +1,11 @@
+--- a/gcc/defaults.h
++++ b/gcc/defaults.h
+@@ -395,7 +395,7 @@ see the files COPYING3 and COPYING.RUNTI
+ /* If we have named section and we support weak symbols, then use the
+    .jcr section for recording java classes which need to be registered
+    at program start-up time.  */
+-#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
++#if 0 && defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
+ #ifndef JCR_SECTION_NAME
+ #define JCR_SECTION_NAME ".jcr"
+ #endif
diff --git a/toolchain/gcc/patches/6.3.0/881-no_tm_section.patch b/toolchain/gcc/patches/6.3.0/881-no_tm_section.patch
new file mode 100644
index 0000000000..fab5db3be5
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/881-no_tm_section.patch
@@ -0,0 +1,11 @@
+--- a/libgcc/crtstuff.c
++++ b/libgcc/crtstuff.c
+@@ -152,7 +152,7 @@ call_ ## FUNC (void)					\
+ #endif
+ 
+ #if !defined(USE_TM_CLONE_REGISTRY) && defined(OBJECT_FORMAT_ELF)
+-# define USE_TM_CLONE_REGISTRY 1
++# define USE_TM_CLONE_REGISTRY 0
+ #endif
+ 
+ /* We do not want to add the weak attribute to the declarations of these
diff --git a/toolchain/gcc/patches/6.3.0/900-bad-mips16-crt.patch b/toolchain/gcc/patches/6.3.0/900-bad-mips16-crt.patch
new file mode 100644
index 0000000000..dd6e9dc889
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/900-bad-mips16-crt.patch
@@ -0,0 +1,9 @@
+--- a/libgcc/config/mips/t-mips16
++++ b/libgcc/config/mips/t-mips16
+@@ -43,3 +43,6 @@ SYNC_CFLAGS = -mno-mips16
+ 
+ # Version these symbols if building libgcc.so.
+ SHLIB_MAPFILES += $(srcdir)/config/mips/libgcc-mips16.ver
++
++CRTSTUFF_T_CFLAGS += -mno-mips16
++CRTSTUFF_T_CFLAGS_S += -mno-mips16
diff --git a/toolchain/gcc/patches/6.3.0/910-mbsd_multi.patch b/toolchain/gcc/patches/6.3.0/910-mbsd_multi.patch
new file mode 100644
index 0000000000..62203dfcf6
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/910-mbsd_multi.patch
@@ -0,0 +1,222 @@
+
+	This patch brings over a few features from MirBSD:
+	* -fhonour-copts
+	  If this option is not given, it's warned (depending
+	  on environment variables). This is to catch errors
+	  of misbuilt packages which override CFLAGS themselves.
+	* -Werror-maybe-reset
+	  Has the effect of -Wno-error if GCC_NO_WERROR is
+	  set and not '0', a no-operation otherwise. This is
+	  to be able to use -Werror in "make" but prevent
+	  GNU autoconf generated configure scripts from
+	  freaking out.
+
+	This patch was authored by Thorsten Glaser <tg at mirbsd.de>
+	with copyright assignment to the FSF in effect.
+
+--- a/gcc/c-family/c-opts.c
++++ b/gcc/c-family/c-opts.c
+@@ -107,6 +107,9 @@ static int class_dump_flags;
+ /* Whether any standard preincluded header has been preincluded.  */
+ static bool done_preinclude;
+ 
++/* Check if a port honours COPTS.  */
++static int honour_copts = 0;
++
+ static void handle_OPT_d (const char *);
+ static void set_std_cxx98 (int);
+ static void set_std_cxx11 (int);
+@@ -442,6 +445,12 @@ c_common_handle_option (size_t scode, co
+       flag_no_builtin = !value;
+       break;
+ 
++    case OPT_fhonour_copts:
++      if (c_language == clk_c) {
++        honour_copts++;
++      }
++      break;
++
+     case OPT_fconstant_string_class_:
+       constant_string_class_name = arg;
+       break;
+@@ -1041,6 +1050,47 @@ c_common_init (void)
+       return false;
+     }
+ 
++  if (c_language == clk_c) {
++    char *ev = getenv ("GCC_HONOUR_COPTS");
++    int evv;
++    if (ev == NULL)
++      evv = -1;
++    else if ((*ev == '0') || (*ev == '\0'))
++      evv = 0;
++    else if (*ev == '1')
++      evv = 1;
++    else if (*ev == '2')
++      evv = 2;
++    else if (*ev == 's')
++      evv = -1;
++    else {
++      warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
++      evv = 1; /* maybe depend this on something like MIRBSD_NATIVE?  */
++    }
++    if (evv == 1) {
++      if (honour_copts == 0) {
++        error ("someone does not honour COPTS at all in lenient mode");
++        return false;
++      } else if (honour_copts != 1) {
++        warning (0, "someone does not honour COPTS correctly, passed %d times",
++         honour_copts);
++      }
++    } else if (evv == 2) {
++      if (honour_copts == 0) {
++        error ("someone does not honour COPTS at all in strict mode");
++        return false;
++      } else if (honour_copts != 1) {
++        error ("someone does not honour COPTS correctly, passed %d times",
++         honour_copts);
++        return false;
++      }
++    } else if (evv == 0) {
++      if (honour_copts != 1)
++        inform (0, "someone does not honour COPTS correctly, passed %d times",
++         honour_copts);
++    }
++  }
++
+   return true;
+ }
+ 
+--- a/gcc/c-family/c.opt
++++ b/gcc/c-family/c.opt
+@@ -438,6 +438,10 @@ Wfloat-conversion
+ C ObjC C++ ObjC++ Var(warn_float_conversion) Warning LangEnabledBy(C ObjC C++ ObjC++,Wconversion)
+ Warn for implicit type conversions that cause loss of floating point precision.
+ 
++Werror-maybe-reset
++C ObjC C++ ObjC++
++; Documented in common.opt
++
+ Wfloat-equal
+ C ObjC C++ ObjC++ Var(warn_float_equal) Warning
+ Warn if testing floating point numbers for equality.
+@@ -1252,6 +1256,9 @@ C++ ObjC++ Optimization Alias(fexception
+ fhonor-std
+ C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+ 
++fhonour-copts
++C ObjC C++ ObjC++ RejectNegative
++
+ fhosted
+ C ObjC
+ Assume normal C execution environment.
+--- a/gcc/common.opt
++++ b/gcc/common.opt
+@@ -581,6 +581,10 @@ Werror=
+ Common Joined
+ Treat specified warning as error.
+ 
++Werror-maybe-reset
++Common
++If environment variable GCC_NO_WERROR is set, act as -Wno-error
++
+ Wextra
+ Common Var(extra_warnings) Warning
+ Print extra (possibly unwanted) warnings.
+@@ -1432,6 +1436,9 @@ fguess-branch-probability
+ Common Report Var(flag_guess_branch_prob) Optimization
+ Enable guessing of branch probabilities.
+ 
++fhonour-copts
++Common RejectNegative
++
+ ; Nonzero means ignore `#ident' directives.  0 means handle them.
+ ; Generate position-independent code for executables if possible
+ ; On SVR4 targets, it also controls whether or not to emit a
+--- a/gcc/opts.c
++++ b/gcc/opts.c
+@@ -1783,6 +1783,17 @@ common_handle_option (struct gcc_options
+ 			       opts, opts_set, loc, dc);
+       break;
+ 
++    case OPT_Werror_maybe_reset:
++      {
++        char *ev = getenv ("GCC_NO_WERROR");
++        if ((ev != NULL) && (*ev != '0'))
++          warnings_are_errors = 0;
++      }
++      break;
++
++    case OPT_fhonour_copts:
++      break;
++
+     case OPT_Wlarger_than_:
+       opts->x_larger_than_size = value;
+       opts->x_warn_larger_than = value != -1;
+--- a/gcc/doc/cppopts.texi
++++ b/gcc/doc/cppopts.texi
+@@ -163,6 +163,11 @@ in older programs.  This warning is on b
+ Make all warnings into hard errors.  Source code which triggers warnings
+ will be rejected.
+ 
++ at item -Werror-maybe-reset
++ at opindex Werror-maybe-reset
++Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
++variable is set to anything other than 0 or empty.
++
+ @item -Wsystem-headers
+ @opindex Wsystem-headers
+ Issue warnings for code in system headers.  These are normally unhelpful
+--- a/gcc/doc/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -263,7 +263,7 @@ Objective-C and Objective-C++ Dialects}.
+ -Wno-discarded-qualifiers -Wno-discarded-array-qualifiers @gol
+ -Wno-div-by-zero -Wdouble-promotion -Wduplicated-cond @gol
+ -Wempty-body  -Wenum-compare -Wno-endif-labels @gol
+--Werror  -Werror=* -Wfatal-errors -Wfloat-equal  -Wformat  -Wformat=2 @gol
++-Werror  -Werror=* -Werror-maybe-reset -Wfatal-errors -Wfloat-equal  -Wformat  -Wformat=2 @gol
+ -Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol
+ -Wformat-security  -Wformat-signedness  -Wformat-y2k -Wframe-address @gol
+ -Wframe-larger-than=@var{len} -Wno-free-nonheap-object -Wjump-misses-init @gol
+@@ -5737,6 +5737,22 @@ This option is only supported for C and
+ @option{-Wall} and by @option{-Wpedantic}, which can be disabled with
+ @option{-Wno-pointer-sign}.
+ 
++ at item -Werror-maybe-reset
++ at opindex Werror-maybe-reset
++Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
++variable is set to anything other than 0 or empty.
++
++ at item -fhonour-copts
++ at opindex fhonour-copts
++If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
++given at least once, and warn if it is given more than once.
++If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
++given exactly once.
++If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option
++is not given exactly once.
++The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}.
++This flag and environment variable only affect the C language.
++
+ @item -Wstack-protector
+ @opindex Wstack-protector
+ @opindex Wno-stack-protector
+@@ -6605,7 +6621,7 @@ so, the first branch is redirected to ei
+ second branch or a point immediately following it, depending on whether
+ the condition is known to be true or false.
+ 
+-Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.
++Enabled at levels @option{-O3}.
+ 
+ @item -fsplit-wide-types
+ @opindex fsplit-wide-types
+--- a/gcc/java/jvspec.c
++++ b/gcc/java/jvspec.c
+@@ -629,6 +629,7 @@ lang_specific_pre_link (void)
+      class name.  Append dummy `.c' that can be stripped by set_input so %b
+      is correct.  */ 
+   set_input (concat (main_class_name, "main.c", NULL));
++  putenv ("GCC_HONOUR_COPTS=s"); /* XXX hack!  */
+   err = do_spec (jvgenmain_spec);
+   if (err == 0)
+     {
diff --git a/toolchain/gcc/patches/6.3.0/920-specs_nonfatal_getenv.patch b/toolchain/gcc/patches/6.3.0/920-specs_nonfatal_getenv.patch
new file mode 100644
index 0000000000..dc0acb95a8
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/920-specs_nonfatal_getenv.patch
@@ -0,0 +1,15 @@
+--- a/gcc/gcc.c
++++ b/gcc/gcc.c
+@@ -9198,8 +9198,10 @@ getenv_spec_function (int argc, const ch
+     value = varname;
+ 
+   if (!value)
+-    fatal_error (input_location,
+-		 "environment variable %qs not defined", varname);
++    {
++      warning (input_location, "environment variable %qs not defined", varname);
++      value = "";
++    }
+ 
+   /* We have to escape every character of the environment variable so
+      they are not interpreted as active spec characters.  A
diff --git a/toolchain/gcc/patches/6.3.0/930-fix-mips-noexecstack.patch b/toolchain/gcc/patches/6.3.0/930-fix-mips-noexecstack.patch
new file mode 100644
index 0000000000..2a99840b63
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/930-fix-mips-noexecstack.patch
@@ -0,0 +1,111 @@
+From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 2001
+From: Andrew McDonnell <bugs@andrewmcdonnell.net>
+Date: Fri, 3 Oct 2014 19:09:00 +0930
+Subject: Add .note.GNU-stack section
+
+See http://lists.busybox.net/pipermail/uclibc/2014-October/048671.html
+Below copied from https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02430.html
+
+Re: [Patch, MIPS] Add .note.GNU-stack section
+
+    From: Steve Ellcey <sellcey at mips dot com>
+
+On Wed, 2014-09-10 at 10:15 -0700, Eric Christopher wrote:
+>
+>
+> On Wed, Sep 10, 2014 at 9:27 AM, <pinskia@gmail.com> wrote:
+
+>         This works except you did not update the assembly files in
+>         libgcc or glibc. We (Cavium) have the same patch in our tree
+>         for a few released versions.
+
+> Mind just checking yours in then Andrew?
+
+> Thanks!
+> -eric
+
+I talked to Andrew about what files he changed in GCC and created and
+tested this new patch.  Andrew also mentioned changing some assembly
+files in glibc but I don't see any use of '.section .note.GNU-stack' in
+any assembly files in glibc (for any platform) so I wasn't planning on
+creating a glibc to add them to mips glibc assembly language files.
+
+OK to check in this patch?
+
+Steve Ellcey
+sellcey@mips.com
+
+
+
+2014-09-26  Steve Ellcey  <sellcey@mips.com>
+---
+ gcc/config/mips/mips.c          | 3 +++
+ libgcc/config/mips/crti.S       | 4 ++++
+ libgcc/config/mips/crtn.S       | 3 +++
+ libgcc/config/mips/mips16.S     | 4 ++++
+ libgcc/config/mips/vr4120-div.S | 4 ++++
+ 5 files changed, 18 insertions(+)
+
+--- a/gcc/config/mips/mips.c
++++ b/gcc/config/mips/mips.c
+@@ -20228,6 +20228,9 @@ mips_promote_function_mode (const_tree t
+ #undef TARGET_HARD_REGNO_SCRATCH_OK
+ #define TARGET_HARD_REGNO_SCRATCH_OK mips_hard_regno_scratch_ok
+ 
++#undef TARGET_ASM_FILE_END
++#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
++
+ struct gcc_target targetm = TARGET_INITIALIZER;
+ 
+ #include "gt-mips.h"
+--- a/libgcc/config/mips/crti.S
++++ b/libgcc/config/mips/crti.S
+@@ -21,6 +21,10 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
++
++/* An executable stack is *not* required for these functions.  */
++	.section .note.GNU-stack,"",%progbits
++
+ /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
+    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
+ 
+--- a/libgcc/config/mips/crtn.S
++++ b/libgcc/config/mips/crtn.S
+@@ -21,6 +21,9 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
++/* An executable stack is *not* required for these functions.  */
++	.section .note.GNU-stack,"",%progbits
++
+ /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
+    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
+ 
+--- a/libgcc/config/mips/mips16.S
++++ b/libgcc/config/mips/mips16.S
+@@ -48,6 +48,10 @@ see the files COPYING3 and COPYING.RUNTI
+    values using the soft-float calling convention, but do the actual
+    operation using the hard floating point instructions.  */
+ 
++/* An executable stack is *not* required for these functions.  */
++	.section .note.GNU-stack,"",%progbits
++	.previous
++
+ #if defined _MIPS_SIM && (_MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABIO64)
+ 
+ /* This file contains 32-bit assembly code.  */
+--- a/libgcc/config/mips/vr4120-div.S
++++ b/libgcc/config/mips/vr4120-div.S
+@@ -26,6 +26,10 @@ see the files COPYING3 and COPYING.RUNTI
+    -mfix-vr4120.  div and ddiv do not give the correct result when one
+    of the operands is negative.  */
+ 
++/* An executable stack is *not* required for these functions.  */
++	.section .note.GNU-stack,"",%progbits
++	.previous
++
+ 	.set	nomips16
+ 
+ #define DIV								\
diff --git a/toolchain/gcc/patches/6.3.0/940-no-clobber-stamp-bits.patch b/toolchain/gcc/patches/6.3.0/940-no-clobber-stamp-bits.patch
new file mode 100644
index 0000000000..68e62865b1
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/940-no-clobber-stamp-bits.patch
@@ -0,0 +1,11 @@
+--- a/libstdc++-v3/include/Makefile.in
++++ b/libstdc++-v3/include/Makefile.in
+@@ -1459,7 +1459,7 @@ stamp-bits: ${bits_headers}
+ 	@$(STAMP) stamp-bits
+ 
+ stamp-bits-sup: stamp-bits ${bits_sup_headers}
+-	@-cd ${bits_builddir} && $(LN_S) $? . 2>/dev/null
++	@-cd ${bits_builddir} && $(LN_S) $(filter-out stamp-bits,$?) . 2>/dev/null
+ 	@$(STAMP) stamp-bits-sup
+ 
+ stamp-c_base: ${c_base_headers}
diff --git a/toolchain/gcc/patches/6.3.0/950-cpp_file_path_translation.patch b/toolchain/gcc/patches/6.3.0/950-cpp_file_path_translation.patch
new file mode 100644
index 0000000000..d467eb7c9a
--- /dev/null
+++ b/toolchain/gcc/patches/6.3.0/950-cpp_file_path_translation.patch
@@ -0,0 +1,182 @@
+Forward ported from attachment to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47047
+
+--- a/gcc/c-family/c-opts.c
++++ b/gcc/c-family/c-opts.c
+@@ -574,6 +574,10 @@ c_common_handle_option (size_t scode, co
+       add_path (xstrdup (arg), SYSTEM, 0, true);
+       break;
+ 
++    case OPT_iremap:
++      add_cpp_remap_path (arg);
++      break;
++
+     case OPT_iwithprefix:
+       add_prefixed_path (arg, SYSTEM);
+       break;
+--- a/gcc/c-family/c.opt
++++ b/gcc/c-family/c.opt
+@@ -1632,6 +1632,10 @@ iquote
+ C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
+ -iquote <dir>	Add <dir> to the end of the quote include path.
+ 
++iremap
++C ObjC C++ ObjC++ Joined Separate
++-iremap <src:dst>  Convert <src> to <dst> if it occurs as prefix in __FILE__.
++
+ iwithprefix
+ C ObjC C++ ObjC++ Joined Separate
+ -iwithprefix <dir>	Add <dir> to the end of the system include path.
+--- a/gcc/doc/cpp.texi
++++ b/gcc/doc/cpp.texi
+@@ -4444,6 +4444,7 @@ without notice.
+ @c man begin SYNOPSIS
+ cpp [@option{-D}@var{macro}[=@var{defn}]@dots{}] [@option{-U}@var{macro}]
+     [@option{-I}@var{dir}@dots{}] [@option{-iquote}@var{dir}@dots{}]
++    [@option{-iremap}@var{src}:@var{dst}]
+     [@option{-W}@var{warn}@dots{}]
+     [@option{-M}|@option{-MM}] [@option{-MG}] [@option{-MF} @var{filename}]
+     [@option{-MP}] [@option{-MQ} @var{target}@dots{}]
+--- a/gcc/doc/cppopts.texi
++++ b/gcc/doc/cppopts.texi
+@@ -532,6 +532,12 @@ Search @var{dir} only for header files r
+ If @var{dir} begins with @code{=}, then the @code{=} will be replaced
+ by the sysroot prefix; see @option{--sysroot} and @option{-isysroot}.
+ 
++@item -iremap @var{src}:@var{dst}
++@opindex iremap
++Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
++This option can be specified more than once.  Processing stops at the first
++match.
++
+ @item -fdirectives-only
+ @opindex fdirectives-only
+ When preprocessing, handle directives, but do not expand macros.
+--- a/gcc/doc/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -476,8 +476,8 @@ Objective-C and Objective-C++ Dialects}.
+ @item Directory Options
+ @xref{Directory Options,,Options for Directory Search}.
+ @gccoptlist{-B@var{prefix} -I@var{dir} -iplugindir=@var{dir} @gol
+--iquote@var{dir} -L@var{dir} -no-canonical-prefixes -I- @gol
+---sysroot=@var{dir} --no-sysroot-suffix}
++-iquote@var{dir} -iremap@var{src}:@var{dst} -L@var{dir} -no-canonical-prefixes @gol
++-I- --sysroot=@var{dir} --no-sysroot-suffix}
+ 
+ @item Code Generation Options
+ @xref{Code Gen Options,,Options for Code Generation Conventions}.
+@@ -10861,6 +10861,12 @@ be searched for header files only for th
+ "@var{file}"}; they are not searched for @code{#include <@var{file}>},
+ otherwise just like @option{-I}.
+ 
++@item -iremap @var{src}:@var{dst}
++@opindex iremap
++Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
++This option can be specified more than once.  Processing stops at the first
++match.
++
+ @item -L@var{dir}
+ @opindex L
+ Add directory @var{dir} to the list of directories to be searched
+--- a/libcpp/include/cpplib.h
++++ b/libcpp/include/cpplib.h
+@@ -760,6 +760,9 @@ extern void cpp_set_lang (cpp_reader *,
+ /* Set the include paths.  */
+ extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
+ 
++/* Provide src:dst pair for __FILE__ remapping.  */
++extern void add_cpp_remap_path (const char *);
++
+ /* Call these to get pointers to the options, callback, and deps
+    structures for a given reader.  These pointers are good until you
+    call cpp_finish on that reader.  You can either edit the callbacks
+--- a/libcpp/macro.c
++++ b/libcpp/macro.c
+@@ -227,6 +227,64 @@ static const char * const monthnames[] =
+   "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+ 
++static size_t remap_pairs;
++static char **remap_src;
++static char **remap_dst;
++
++void
++add_cpp_remap_path (const char *arg)
++{
++  const char *arg_dst;
++  size_t len;
++
++  arg_dst = strchr(arg, ':');
++  if (arg_dst == NULL)
++    {
++      fprintf(stderr, "Invalid argument for -iremap\n");
++      exit(1);
++    }
++
++  len = arg_dst - arg;
++  ++arg_dst;
++
++  remap_src = (char **) xrealloc(remap_src, sizeof(char *) * (remap_pairs + 1));
++  remap_dst = (char **) xrealloc(remap_dst, sizeof(char *) * (remap_pairs + 1));
++
++  remap_src[remap_pairs] = (char *) xmalloc(len + 1);
++  memcpy(remap_src[remap_pairs], arg, len);
++  remap_src[remap_pairs][len] = '\0';
++  remap_dst[remap_pairs] = xstrdup(arg_dst);
++  ++remap_pairs;
++}
++
++static const char *
++cpp_remap_file (const char *arg, char **tmp_name)
++{
++  char *result;
++  size_t i, len;
++
++  for (i = 0; i < remap_pairs; ++i)
++    {
++      len = strlen (remap_src[i]);
++      if (strncmp (remap_src[i], arg, len))
++	continue;
++      if (arg[len] == '\0')
++	return xstrdup (remap_dst[i]);
++      if (arg[len] != '/')
++	continue;
++      arg += len;
++      len = strlen (remap_dst[i]);
++      result = (char *) xmalloc (len + strlen (arg) + 1);
++      memcpy(result, remap_dst[i], len);
++      strcpy(result + len, arg);
++      *tmp_name = result;
++
++      return result;
++    }
++
++   return arg;
++}
++
+ /* Helper function for builtin_macro.  Returns the text generated by
+    a builtin macro. */
+ const uchar *
+@@ -290,6 +348,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+       {
+ 	unsigned int len;
+ 	const char *name;
++	char *tmp_name = NULL;
+ 	uchar *buf;
+ 	
+ 	if (node->value.builtin == BT_FILE)
+@@ -301,6 +360,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ 	    if (!name)
+ 	      abort ();
+ 	  }
++	name = cpp_remap_file (name, &tmp_name);
+ 	len = strlen (name);
+ 	buf = _cpp_unaligned_alloc (pfile, len * 2 + 3);
+ 	result = buf;
+@@ -308,6 +368,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ 	buf = cpp_quote_string (buf + 1, (const unsigned char *) name, len);
+ 	*buf++ = '"';
+ 	*buf = '\0';
++	free (tmp_name);
+       }
+       break;
+