[OpenWrt-Devel] [PATCH 1/3] toolchain/gcc: add GCC 8.1.0
wong.syrone at gmail.com
wong.syrone at gmail.com
Thu Jun 21 11:08:10 EDT 2018
From: Syrone Wong <wong.syrone at gmail.com>
Changes compared to GCC 7.x
001-revert_register_mode_search.patch dropped
The commit guards comparison via maybe_gt(), while 001-revert_register_mode_search.patch simply ignore
"GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode)", the powerpc issue might be fixed, I'm not pretty sure.
upstream commit: https://github.com/gcc-mirror/gcc/commit/52acb7aee19f4bb33e76819907eff343bf4f42e8
020-PR-libstdc-81797-Add-.NOTPARALLEL-to-include-Makefil.patch dropped due to already upstream
100-PR-rtl-optimization-83496.patch dropped due to already upstream
910-mbsd_multi.patch
modified to fix ambiguous overloaded inform() call error
gcc/input.h
header: define UNKNOWN_LOCATION ((source_location) 0)
- inform (0, "someone does not honour COPTS correctly, passed %d times",
- honour_copts);
+ inform (UNKNOWN_LOCATION, "someone does not honour COPTS correctly, passed %d times",
+ honour_copts);
940-no-clobber-stamp-bits.patch dropped due to fixed upstream by another way
upstream commit: https://github.com/gcc-mirror/gcc/commit/87b2d547f8ac9778d66909b8726fe967d1efbc74
950-cpp_file_path_translation.patch dropped, Both -fmacro-prefix-map and -ffile-prefix-map are added
to gcc 8.1.0, if I understand it correctly, we should use -fmacro-prefix-map
usage: -fmacro-prefix-map=@var{old}=@var{new}
upstream commit: https://github.com/gcc-mirror/gcc/commit/859b51f83662d01e4f158ea9327db9ca37fe70b3
-iremap exists as a flag for a long time, for backward compatibility, I think we should keep the
variable name unchanged but change its value in rules.mk for gcc 8.x and higher.
Compile and run tested on x86_64
Signed-off-by: Syrone Wong <wong.syrone at gmail.com>
---
toolchain/gcc/Config.in | 3 +
toolchain/gcc/Config.version | 5 +
toolchain/gcc/common.mk | 4 +
.../patches/8.1.0/002-case_insensitive.patch | 24 +++
.../gcc/patches/8.1.0/010-documentation.patch | 35 ++++
.../patches/8.1.0/110-Fix-MIPS-PR-84790.patch | 20 +++
.../gcc/patches/8.1.0/230-musl_libssp.patch | 13 ++
.../300-mips_Os_cpu_rtx_cost_model.patch | 21 +++
.../8.1.0/800-arm_v5te_no_ldrd_strd.patch | 11 ++
.../8.1.0/810-arm-softfloat-libgcc.patch | 33 ++++
.../gcc/patches/8.1.0/820-libgcc_pic.patch | 44 +++++
.../8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch | 28 +++
.../patches/8.1.0/850-use_shared_libgcc.patch | 54 ++++++
.../patches/8.1.0/851-libgcc_no_compat.patch | 22 +++
.../patches/8.1.0/870-ppc_no_crtsavres.patch | 11 ++
.../gcc/patches/8.1.0/881-no_tm_section.patch | 11 ++
.../patches/8.1.0/900-bad-mips16-crt.patch | 9 +
.../gcc/patches/8.1.0/910-mbsd_multi.patch | 146 +++++++++++++++
.../8.1.0/920-specs_nonfatal_getenv.patch | 22 +++
.../8.1.0/930-fix-mips-noexecstack.patch | 111 ++++++++++++
...ibffi-fix-MIPS-softfloat-build-issue.patch | 168 ++++++++++++++++++
...mpilation-when-making-cross-compiler.patch | 67 +++++++
22 files changed, 862 insertions(+)
create mode 100644 toolchain/gcc/patches/8.1.0/002-case_insensitive.patch
create mode 100644 toolchain/gcc/patches/8.1.0/010-documentation.patch
create mode 100644 toolchain/gcc/patches/8.1.0/110-Fix-MIPS-PR-84790.patch
create mode 100644 toolchain/gcc/patches/8.1.0/230-musl_libssp.patch
create mode 100644 toolchain/gcc/patches/8.1.0/300-mips_Os_cpu_rtx_cost_model.patch
create mode 100644 toolchain/gcc/patches/8.1.0/800-arm_v5te_no_ldrd_strd.patch
create mode 100644 toolchain/gcc/patches/8.1.0/810-arm-softfloat-libgcc.patch
create mode 100644 toolchain/gcc/patches/8.1.0/820-libgcc_pic.patch
create mode 100644 toolchain/gcc/patches/8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch
create mode 100644 toolchain/gcc/patches/8.1.0/850-use_shared_libgcc.patch
create mode 100644 toolchain/gcc/patches/8.1.0/851-libgcc_no_compat.patch
create mode 100644 toolchain/gcc/patches/8.1.0/870-ppc_no_crtsavres.patch
create mode 100644 toolchain/gcc/patches/8.1.0/881-no_tm_section.patch
create mode 100644 toolchain/gcc/patches/8.1.0/900-bad-mips16-crt.patch
create mode 100644 toolchain/gcc/patches/8.1.0/910-mbsd_multi.patch
create mode 100644 toolchain/gcc/patches/8.1.0/920-specs_nonfatal_getenv.patch
create mode 100644 toolchain/gcc/patches/8.1.0/930-fix-mips-noexecstack.patch
create mode 100644 toolchain/gcc/patches/8.1.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
create mode 100644 toolchain/gcc/patches/8.1.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
diff --git a/toolchain/gcc/Config.in b/toolchain/gcc/Config.in
index 37437900b1..c3208d372c 100644
--- a/toolchain/gcc/Config.in
+++ b/toolchain/gcc/Config.in
@@ -20,6 +20,9 @@ choice
bool "gcc 7.x"
depends on !arc
+ config GCC_USE_VERSION_8
+ bool "gcc 8.x"
+ depends on !arc
endchoice
config GCC_USE_GRAPHITE
diff --git a/toolchain/gcc/Config.version b/toolchain/gcc/Config.version
index 616b6bbe35..97c5e50dad 100644
--- a/toolchain/gcc/Config.version
+++ b/toolchain/gcc/Config.version
@@ -6,8 +6,13 @@ config GCC_VERSION_5
default y if GCC_USE_VERSION_5
bool
+config GCC_VERSION_8
+ default y if GCC_USE_VERSION_8
+ bool
+
config GCC_VERSION
string
default "5.5.0" if GCC_VERSION_5
default "arc-2017.09-release" if GCC_VERSION_7_1_ARC
+ default "8.1.0" if GCC_VERSION_8
default "7.3.0"
diff --git a/toolchain/gcc/common.mk b/toolchain/gcc/common.mk
index 1f9abb3f3e..1e17620156 100644
--- a/toolchain/gcc/common.mk
+++ b/toolchain/gcc/common.mk
@@ -36,6 +36,10 @@ ifeq ($(PKG_VERSION),7.3.0)
PKG_HASH:=832ca6ae04636adbb430e865a1451adf6979ab44ca1c8374f61fba65645ce15c
endif
+ifeq ($(PKG_VERSION),8.1.0)
+ PKG_HASH:=1d1866f992626e61349a1ccd0b8d5253816222cdc13390dcfaa74b093aa2b153
+endif
+
ifneq ($(CONFIG_GCC_VERSION_7_1_ARC),)
PKG_VERSION:=7.1.1
PKG_SOURCE_URL:=https://github.com/foss-for-synopsys-dwc-arc-processors/gcc/archive/$(GCC_VERSION)
diff --git a/toolchain/gcc/patches/8.1.0/002-case_insensitive.patch b/toolchain/gcc/patches/8.1.0/002-case_insensitive.patch
new file mode 100644
index 0000000000..3442076d7d
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/002-case_insensitive.patch
@@ -0,0 +1,24 @@
+commit 81cc26c706b2bc8c8c1eb1a322e5c5157900836e
+Author: Felix Fietkau <nbd at openwrt.org>
+Date: Sun Oct 19 21:45:51 2014 +0000
+
+ gcc: do not assume that the Mac OS X filesystem is case insensitive
+
+ Signed-off-by: Felix Fietkau <nbd at openwrt.org>
+
+ SVN-Revision: 42973
+
+--- 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/8.1.0/010-documentation.patch b/toolchain/gcc/patches/8.1.0/010-documentation.patch
new file mode 100644
index 0000000000..c3a6a15901
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/010-documentation.patch
@@ -0,0 +1,35 @@
+commit 098bd91f5eae625c7d2ee621e10930fc4434e5e2
+Author: Luka Perkov <luka at openwrt.org>
+Date: Tue Feb 26 16:16:33 2013 +0000
+
+ gcc: don't build documentation
+
+ This closes #13039.
+
+ Signed-off-by: Luka Perkov <luka at openwrt.org>
+
+ SVN-Revision: 35807
+
+--- a/gcc/Makefile.in
++++ b/gcc/Makefile.in
+@@ -3203,18 +3203,10 @@ 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/8.1.0/110-Fix-MIPS-PR-84790.patch b/toolchain/gcc/patches/8.1.0/110-Fix-MIPS-PR-84790.patch
new file mode 100644
index 0000000000..b89eca2faf
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/110-Fix-MIPS-PR-84790.patch
@@ -0,0 +1,20 @@
+Fix https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84790.
+MIPS16 functions have a static assembler prologue which clobbers
+registers v0 and v1. Add these register clobbers to function call
+instructions.
+
+--- a/gcc/config/mips/mips.c
++++ b/gcc/config/mips/mips.c
+@@ -3102,6 +3102,12 @@ mips_emit_call_insn (rtx pattern, rtx or
+ emit_insn (gen_update_got_version ());
+ }
+
++ if (TARGET_MIPS16 && TARGET_USE_GOT)
++ {
++ clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), MIPS16_PIC_TEMP);
++ clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), MIPS_PROLOGUE_TEMP (word_mode));
++ }
++
+ if (TARGET_MIPS16
+ && TARGET_EXPLICIT_RELOCS
+ && TARGET_CALL_CLOBBERED_GP)
diff --git a/toolchain/gcc/patches/8.1.0/230-musl_libssp.patch b/toolchain/gcc/patches/8.1.0/230-musl_libssp.patch
new file mode 100644
index 0000000000..b3ab79cafb
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/230-musl_libssp.patch
@@ -0,0 +1,13 @@
+--- a/gcc/gcc.c
++++ b/gcc/gcc.c
+@@ -868,7 +868,9 @@ 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/8.1.0/300-mips_Os_cpu_rtx_cost_model.patch b/toolchain/gcc/patches/8.1.0/300-mips_Os_cpu_rtx_cost_model.patch
new file mode 100644
index 0000000000..6f97356ac6
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/300-mips_Os_cpu_rtx_cost_model.patch
@@ -0,0 +1,21 @@
+commit ecf7671b769fe96f7b5134be442089f8bdba55d2
+Author: Felix Fietkau <nbd at nbd.name>
+Date: Thu Aug 4 20:29:45 2016 +0200
+
+gcc: add a patch to generate better code with Os on mips
+
+Also happens to reduce compressed code size a bit
+
+Signed-off-by: Felix Fietkau <nbd at nbd.name>
+
+--- a/gcc/config/mips/mips.c
++++ b/gcc/config/mips/mips.c
+@@ -19834,7 +19834,7 @@ 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/8.1.0/800-arm_v5te_no_ldrd_strd.patch b/toolchain/gcc/patches/8.1.0/800-arm_v5te_no_ldrd_strd.patch
new file mode 100644
index 0000000000..172295f28b
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/800-arm_v5te_no_ldrd_strd.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/arm/arm.h
++++ b/gcc/config/arm/arm.h
+@@ -155,7 +155,7 @@ extern tree arm_fp16_type_node;
+ /* 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/8.1.0/810-arm-softfloat-libgcc.patch b/toolchain/gcc/patches/8.1.0/810-arm-softfloat-libgcc.patch
new file mode 100644
index 0000000000..5c9d86aead
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/810-arm-softfloat-libgcc.patch
@@ -0,0 +1,33 @@
+commit 8570c4be394cff7282f332f97da2ff569a927ddb
+Author: Imre Kaloz <kaloz at openwrt.org>
+Date: Wed Feb 2 20:06:12 2011 +0000
+
+ fixup arm soft-float symbols
+
+ SVN-Revision: 25325
+
+--- 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
+@@ -58,8 +58,6 @@
+ %{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/8.1.0/820-libgcc_pic.patch b/toolchain/gcc/patches/8.1.0/820-libgcc_pic.patch
new file mode 100644
index 0000000000..1a9678d480
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/820-libgcc_pic.patch
@@ -0,0 +1,44 @@
+commit c96312958c0621e72c9b32da5bc224ffe2161384
+Author: Felix Fietkau <nbd at openwrt.org>
+Date: Mon Oct 19 23:26:09 2009 +0000
+
+ gcc: create a proper libgcc_pic.a static library for relinking (4.3.3+ for now, backport will follow)
+
+ SVN-Revision: 18086
+
+--- a/libgcc/Makefile.in
++++ b/libgcc/Makefile.in
+@@ -923,11 +923,12 @@ $(libgcov-driver-objects): %$(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)"; \
+@@ -948,7 +949,7 @@ 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)
+@@ -1154,6 +1155,10 @@ 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/8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch b/toolchain/gcc/patches/8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch
new file mode 100644
index 0000000000..b9c9b161ad
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch
@@ -0,0 +1,28 @@
+commit 7edc8ca5456d9743dd0075eb3cc5b04f4f24c8cc
+Author: Imre Kaloz <kaloz at openwrt.org>
+Date: Wed Feb 2 19:34:36 2011 +0000
+
+ add armv4 fixup patches
+
+ SVN-Revision: 25322
+
+
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -88,10 +88,15 @@
+ #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/8.1.0/850-use_shared_libgcc.patch b/toolchain/gcc/patches/8.1.0/850-use_shared_libgcc.patch
new file mode 100644
index 0000000000..f619f0e6a1
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/850-use_shared_libgcc.patch
@@ -0,0 +1,54 @@
+commit dcfc40358b5a3cae7320c17f8d1cebd5ad5540cd
+Author: Felix Fietkau <nbd at openwrt.org>
+Date: Sun Feb 12 20:25:47 2012 +0000
+
+ gcc 4.6: port over the missing patch 850-use_shared_libgcc.patch to prevent libgcc crap from leaking into every single binary
+
+ SVN-Revision: 30486
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -126,10 +126,6 @@
+ "%{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
+@@ -136,5 +136,5 @@ 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}} \
+ %{static-pie:-static -pie --no-dynamic-linker -z text}"
diff --git a/toolchain/gcc/patches/8.1.0/851-libgcc_no_compat.patch b/toolchain/gcc/patches/8.1.0/851-libgcc_no_compat.patch
new file mode 100644
index 0000000000..d710e40717
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/851-libgcc_no_compat.patch
@@ -0,0 +1,22 @@
+commit 64661de100da1ec1061ef3e5e400285dce115e6b
+Author: Felix Fietkau <nbd at openwrt.org>
+Date: Sun May 10 13:16:35 2015 +0000
+
+ gcc: add some size optimization patches
+
+ Signed-off-by: Felix Fietkau <nbd at openwrt.org>
+
+ SVN-Revision: 45664
+
+--- 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/8.1.0/870-ppc_no_crtsavres.patch b/toolchain/gcc/patches/8.1.0/870-ppc_no_crtsavres.patch
new file mode 100644
index 0000000000..a73081493b
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/870-ppc_no_crtsavres.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/rs6000/rs6000.c
++++ b/gcc/config/rs6000/rs6000.c
+@@ -24424,7 +24424,7 @@ 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/8.1.0/881-no_tm_section.patch b/toolchain/gcc/patches/8.1.0/881-no_tm_section.patch
new file mode 100644
index 0000000000..fab5db3be5
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/881-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/8.1.0/900-bad-mips16-crt.patch b/toolchain/gcc/patches/8.1.0/900-bad-mips16-crt.patch
new file mode 100644
index 0000000000..dd6e9dc889
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/900-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/8.1.0/910-mbsd_multi.patch b/toolchain/gcc/patches/8.1.0/910-mbsd_multi.patch
new file mode 100644
index 0000000000..83d41f2f1a
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/910-mbsd_multi.patch
@@ -0,0 +1,146 @@
+commit 99368862e44740ff4fd33760893f04e14f9dbdf1
+Author: Felix Fietkau <nbd at openwrt.org>
+Date: Tue Jul 31 00:52:27 2007 +0000
+
+ Port the mbsd_multi patch from freewrt, which adds -fhonour-copts. This will emit warnings in packages that don't use our target cflags properly
+
+ SVN-Revision: 8256
+
+ This patch brings over a feature 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.
+
+ 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 dump_flags_t original_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);
+@@ -461,6 +464,12 @@ 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;
+@@ -1110,6 +1119,47 @@ 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 (UNKNOWN_LOCATION, "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
+@@ -1469,6 +1469,9 @@ 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
+@@ -1547,6 +1547,9 @@ 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
+@@ -2056,6 +2056,9 @@ common_handle_option (struct gcc_options
+ opts, opts_set, loc, dc);
+ 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/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -7005,6 +7005,17 @@ 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 -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
diff --git a/toolchain/gcc/patches/8.1.0/920-specs_nonfatal_getenv.patch b/toolchain/gcc/patches/8.1.0/920-specs_nonfatal_getenv.patch
new file mode 100644
index 0000000000..c3836e63af
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/920-specs_nonfatal_getenv.patch
@@ -0,0 +1,22 @@
+Author: Jo-Philipp Wich <jow at openwrt.org>
+Date: Sat Apr 21 03:02:39 2012 +0000
+
+ gcc: add patch to make the getenv() spec function nonfatal if requested environment variable is unset
+
+ SVN-Revision: 31390
+
+--- a/gcc/gcc.c
++++ b/gcc/gcc.c
+@@ -9347,8 +9347,10 @@ 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/8.1.0/930-fix-mips-noexecstack.patch b/toolchain/gcc/patches/8.1.0/930-fix-mips-noexecstack.patch
new file mode 100644
index 0000000000..706d67f7c9
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/930-fix-mips-noexecstack.patch
@@ -0,0 +1,111 @@
+From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 2001
+From: Andrew McDonnell <bugs at 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 at 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 at mips.com
+
+
+
+2014-09-26 Steve Ellcey <sellcey at 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
+@@ -22627,6 +22627,9 @@ mips_starting_frame_offset (void)
+ #undef TARGET_STARTING_FRAME_OFFSET
+ #define TARGET_STARTING_FRAME_OFFSET mips_starting_frame_offset
+
++#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/8.1.0/931-libffi-fix-MIPS-softfloat-build-issue.patch b/toolchain/gcc/patches/8.1.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
new file mode 100644
index 0000000000..fb4cb1533a
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
@@ -0,0 +1,168 @@
+From c0c62fa4256f805389f16ebfc4a60cf789129b50 Mon Sep 17 00:00:00 2001
+From: BangLang Huang <banglang.huang at foxmail.com>
+Date: Wed, 9 Nov 2016 10:36:49 +0800
+Subject: [PATCH] libffi: fix MIPS softfloat build issue
+
+Backported from github.com/libffi/libffi#272
+
+Signed-off-by: BangLang Huang <banglang.huang at foxmail.com>
+Signed-off-by: Yousong Zhou <yszhou4tech at gmail.com>
+---
+ libffi/src/mips/n32.S | 17 +++++++++++++++++
+ libffi/src/mips/o32.S | 17 +++++++++++++++++
+ 2 files changed, 34 insertions(+)
+
+--- a/libffi/src/mips/n32.S
++++ b/libffi/src/mips/n32.S
+@@ -107,6 +107,16 @@ loadregs:
+
+ REG_L t6, 3*FFI_SIZEOF_ARG($fp) # load the flags word into t6.
+
++#ifdef __mips_soft_float
++ REG_L a0, 0*FFI_SIZEOF_ARG(t9)
++ REG_L a1, 1*FFI_SIZEOF_ARG(t9)
++ REG_L a2, 2*FFI_SIZEOF_ARG(t9)
++ REG_L a3, 3*FFI_SIZEOF_ARG(t9)
++ REG_L a4, 4*FFI_SIZEOF_ARG(t9)
++ REG_L a5, 5*FFI_SIZEOF_ARG(t9)
++ REG_L a6, 6*FFI_SIZEOF_ARG(t9)
++ REG_L a7, 7*FFI_SIZEOF_ARG(t9)
++#else
+ and t4, t6, ((1<<FFI_FLAG_BITS)-1)
+ REG_L a0, 0*FFI_SIZEOF_ARG(t9)
+ beqz t4, arg1_next
+@@ -193,6 +203,7 @@ arg7_next:
+ arg8_doublep:
+ l.d $f19, 7*FFI_SIZEOF_ARG(t9)
+ arg8_next:
++#endif
+
+ callit:
+ # Load the function pointer
+@@ -214,6 +225,7 @@ retint:
+ b epilogue
+
+ retfloat:
++#ifndef __mips_soft_float
+ bne t6, FFI_TYPE_FLOAT, retdouble
+ jal t9
+ REG_L t4, 4*FFI_SIZEOF_ARG($fp)
+@@ -272,6 +284,7 @@ retstruct_f_d:
+ s.s $f0, 0(t4)
+ s.d $f2, 8(t4)
+ b epilogue
++#endif
+
+ retstruct_d_soft:
+ bne t6, FFI_TYPE_STRUCT_D_SOFT, retstruct_f_soft
+@@ -429,6 +442,7 @@ ffi_closure_N32:
+ REG_S a6, A6_OFF2($sp)
+ REG_S a7, A7_OFF2($sp)
+
++#ifndef __mips_soft_float
+ # Store all possible float/double registers.
+ s.d $f12, F12_OFF2($sp)
+ s.d $f13, F13_OFF2($sp)
+@@ -438,6 +452,7 @@ ffi_closure_N32:
+ s.d $f17, F17_OFF2($sp)
+ s.d $f18, F18_OFF2($sp)
+ s.d $f19, F19_OFF2($sp)
++#endif
+
+ # Call ffi_closure_mips_inner_N32 to do the real work.
+ LA t9, ffi_closure_mips_inner_N32
+@@ -458,6 +473,7 @@ cls_retint:
+ b cls_epilogue
+
+ cls_retfloat:
++#ifndef __mips_soft_float
+ bne v0, FFI_TYPE_FLOAT, cls_retdouble
+ l.s $f0, V0_OFF2($sp)
+ b cls_epilogue
+@@ -500,6 +516,7 @@ cls_retstruct_f_d:
+ l.s $f0, V0_OFF2($sp)
+ l.d $f2, V1_OFF2($sp)
+ b cls_epilogue
++#endif
+
+ cls_retstruct_small2:
+ REG_L v0, V0_OFF2($sp)
+--- a/libffi/src/mips/o32.S
++++ b/libffi/src/mips/o32.S
+@@ -82,13 +82,16 @@ sixteen:
+
+ ADDU $sp, 4 * FFI_SIZEOF_ARG # adjust $sp to new args
+
++#ifndef __mips_soft_float
+ bnez t0, pass_d # make it quick for int
++#endif
+ REG_L a0, 0*FFI_SIZEOF_ARG($sp) # just go ahead and load the
+ REG_L a1, 1*FFI_SIZEOF_ARG($sp) # four regs.
+ REG_L a2, 2*FFI_SIZEOF_ARG($sp)
+ REG_L a3, 3*FFI_SIZEOF_ARG($sp)
+ b call_it
+
++#ifndef __mips_soft_float
+ pass_d:
+ bne t0, FFI_ARGS_D, pass_f
+ l.d $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args
+@@ -130,6 +133,7 @@ pass_f_d:
+ # bne t0, FFI_ARGS_F_D, call_it
+ l.s $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args
+ l.d $f14, 2*FFI_SIZEOF_ARG($sp) # passing double and float
++#endif
+
+ call_it:
+ # Load the function pointer
+@@ -158,14 +162,23 @@ retfloat:
+ bne t2, FFI_TYPE_FLOAT, retdouble
+ jalr t9
+ REG_L t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
++#ifndef __mips_soft_float
+ s.s $f0, 0(t0)
++#else
++ REG_S v0, 0(t0)
++#endif
+ b epilogue
+
+ retdouble:
+ bne t2, FFI_TYPE_DOUBLE, noretval
+ jalr t9
+ REG_L t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
++#ifndef __mips_soft_float
+ s.d $f0, 0(t0)
++#else
++ REG_S v1, 4(t0)
++ REG_S v0, 0(t0)
++#endif
+ b epilogue
+
+ noretval:
+@@ -261,9 +274,11 @@ $LCFI7:
+ li $13, 1 # FFI_O32
+ bne $16, $13, 1f # Skip fp save if FFI_O32_SOFT_FLOAT
+
++#ifndef __mips_soft_float
+ # Store all possible float/double registers.
+ s.d $f12, FA_0_0_OFF2($fp)
+ s.d $f14, FA_1_0_OFF2($fp)
++#endif
+ 1:
+ # Call ffi_closure_mips_inner_O32 to do the work.
+ la t9, ffi_closure_mips_inner_O32
+@@ -281,6 +296,7 @@ $LCFI7:
+ li $13, 1 # FFI_O32
+ bne $16, $13, 1f # Skip fp restore if FFI_O32_SOFT_FLOAT
+
++#ifndef __mips_soft_float
+ li $9, FFI_TYPE_FLOAT
+ l.s $f0, V0_OFF2($fp)
+ beq $8, $9, closure_done
+@@ -288,6 +304,7 @@ $LCFI7:
+ li $9, FFI_TYPE_DOUBLE
+ l.d $f0, V0_OFF2($fp)
+ beq $8, $9, closure_done
++#endif
+ 1:
+ REG_L $3, V1_OFF2($fp)
+ REG_L $2, V0_OFF2($fp)
diff --git a/toolchain/gcc/patches/8.1.0/960-gotools-fix-compilation-when-making-cross-compiler.patch b/toolchain/gcc/patches/8.1.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
new file mode 100644
index 0000000000..1dd05080d3
--- /dev/null
+++ b/toolchain/gcc/patches/8.1.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
@@ -0,0 +1,67 @@
+From dda6b050cd74a352670787a294596a9c56c21327 Mon Sep 17 00:00:00 2001
+From: Yousong Zhou <yszhou4tech at gmail.com>
+Date: Fri, 4 May 2018 18:20:53 +0800
+Subject: [PATCH] gotools: fix compilation when making cross compiler
+
+libgo is "the runtime support library for the Go programming language.
+This library is intended for use with the Go frontend."
+
+gccgo will link target files with libgo.so which depends on libgcc_s.so.1, but
+the linker will complain that it cannot find it. That's because shared libgcc
+is not present in the install directory yet. libgo.so was made without problem
+because gcc will emit -lgcc_s when compiled with -shared option. When gotools
+were being made, it was supplied with -static-libgcc thus no link option was
+provided. Check LIBGO in gcc/go/gcc-spec.c for how gccgo make a builtin spec
+for linking with libgo.so
+
+- GccgoCrossCompilation, https://github.com/golang/go/wiki/GccgoCrossCompilation
+- Cross-building instructions, http://www.eglibc.org/archives/patches/msg00078.html
+
+When 3-pass GCC compilation is used, shared libgcc runtime libraries will be
+available after gcc pass2 completed and will meet the gotools link requirement
+at gcc pass3
+---
+ gotools/Makefile.am | 4 +++-
+ gotools/Makefile.in | 4 +++-
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+--- a/gotools/Makefile.am
++++ b/gotools/Makefile.am
+@@ -26,6 +26,7 @@ PWD_COMMAND = $${PWDCMD-pwd}
+ STAMP = echo timestamp >
+
+ libgodir = ../$(target_noncanonical)/libgo
++libgccdir = ../$(target_noncanonical)/libgcc
+ LIBGODEP = $(libgodir)/libgo.la
+
+ LIBGOTOOL = $(libgodir)/libgotool.a
+@@ -41,7 +42,8 @@ GOCFLAGS = $(CFLAGS_FOR_TARGET)
+ GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
+
+ AM_GOCFLAGS = -I $(libgodir)
+-AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
++AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \
++ -L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s
+ GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@
+
+ libgosrcdir = $(srcdir)/../libgo/go
+--- a/gotools/Makefile.in
++++ b/gotools/Makefile.in
+@@ -263,6 +263,7 @@ mkinstalldirs = $(SHELL) $(toplevel_srcd
+ PWD_COMMAND = $${PWDCMD-pwd}
+ STAMP = echo timestamp >
+ libgodir = ../$(target_noncanonical)/libgo
++libgccdir = ../$(target_noncanonical)/libgcc
+ LIBGODEP = $(libgodir)/libgo.la
+ LIBGOTOOL = $(libgodir)/libgotool.a
+ @NATIVE_FALSE at GOCOMPILER = $(GOC)
+@@ -271,7 +272,8 @@ LIBGOTOOL = $(libgodir)/libgotool.a
+ @NATIVE_TRUE at GOCOMPILER = $(GOC_FOR_TARGET) $(XGCC_FLAGS_FOR_TARGET)
+ GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
+ AM_GOCFLAGS = -I $(libgodir)
+-AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
++AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \
++ -L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s
+ GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@
+ libgosrcdir = $(srcdir)/../libgo/go
+ cmdsrcdir = $(libgosrcdir)/cmd
--
2.17.1
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