Backport gofrontend patches

We need them to unblock ability to bootstrap golang using gccgo.

Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com>

cmd-go-update-DGOPKGPATH-to-use-current-pkgpath-encoding.patch

@@ -0,0 +1,69 @@
+From 855b4aaeabdcddce04ff9295c4b0e6c7aa6db96b Mon Sep 17 00:00:00 2001
+From: Ian Lance Taylor <iant@golang.org>
+Date: Mon, 17 Feb 2020 18:16:41 -0800
+Subject: [PATCH] cmd/go: update -DGOPKGPATH to use current pkgpath encoding
+
+This will need to be done in the gc version too, probably more cleverly.
+This version will ensure that the next GCC release works correctly
+when using the GCC version of the go tool.
+
+Updates golang/go#37272
+
+Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/219817
+---
+ gcc/go/gofrontend/MERGE                |  2 +-
+ libgo/go/cmd/go/internal/work/gccgo.go | 26 ++++++++++++++++++++------
+ 2 files changed, 21 insertions(+), 7 deletions(-)
+
+diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
+index 47dd5fb..ce10ee1 100644
+--- a/gcc/go/gofrontend/MERGE
++++ b/gcc/go/gofrontend/MERGE
+@@ -1,4 +1,4 @@
+-8505defaa91ecc5b42afd02eb335981e8b02b288
++d5d00d310ec33aeb18f33f807956ec0c4eeea6bb
+ 
+ The first line of this file holds the git revision number of the last
+ merge done from the gofrontend repository.
+diff --git a/libgo/go/cmd/go/internal/work/gccgo.go b/libgo/go/cmd/go/internal/work/gccgo.go
+index f6fa17d..63d5c62 100644
+--- a/libgo/go/cmd/go/internal/work/gccgo.go
++++ b/libgo/go/cmd/go/internal/work/gccgo.go
+@@ -596,14 +596,28 @@ func gccgoPkgpath(p *load.Package) string {
+ 	return p.ImportPath
+ }
+ 
++// gccgoCleanPkgpath returns the form of p's pkgpath that gccgo uses
++// for symbol names. This is like gccgoPkgpathToSymbolNew in cmd/cgo/out.go.
+ func gccgoCleanPkgpath(p *load.Package) string {
+-	clean := func(r rune) rune {
++	ppath := gccgoPkgpath(p)
++	bsl := []byte{}
++	changed := false
++	for _, c := range []byte(ppath) {
+ 		switch {
+-		case 'A' <= r && r <= 'Z', 'a' <= r && r <= 'z',
+-			'0' <= r && r <= '9':
+-			return r
++		case 'A' <= c && c <= 'Z', 'a' <= c && c <= 'z',
++			'0' <= c && c <= '9', c == '_':
++			bsl = append(bsl, c)
++		case c == '.':
++			bsl = append(bsl, ".x2e"...)
++			changed = true
++		default:
++			encbytes := []byte(fmt.Sprintf("..z%02x", c))
++			bsl = append(bsl, encbytes...)
++			changed = true
+ 		}
+-		return '_'
+ 	}
+-	return strings.Map(clean, gccgoPkgpath(p))
++	if !changed {
++		return ppath
++	}
++	return string(bsl)
+ }
+-- 
+2.9.3
+

gcc.spec

@@ -115,7 +115,7 @@
 Summary: Various compilers (C, C++, Objective-C, ...)
 Name: gcc
 Version: %{gcc_version}
-Release: %{gcc_release}%{?dist}
+Release: %{gcc_release}.0.riscv64%{?dist}
 # libgcc, libgfortran, libgomp, libstdc++ and crtstuff have
 # GCC Runtime Exception.
 License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions and LGPLv2+ and BSD
@@ -265,6 +265,9 @@ Patch9: gcc10-Wno-format-security.patch
 Patch10: gcc10-rh1574936.patch
 Patch11: gcc10-d-shared-libphobos.patch
 
+Patch20: libgo-install-internal-reflectlite-gox.patch
+Patch21: cmd-go-update-DGOPKGPATH-to-use-current-pkgpath-encoding.patch
+
 # On ARM EABI systems, we do want -gnueabi to be part of the
 # target triple.
 %ifnarch %{arm}
@@ -776,6 +779,10 @@ to NVidia PTX capable devices if available.
 %endif
 %patch11 -p0 -b .d-shared-libphobos~
 
+# These will be part of 0.9 build (taken from upstream branch)
+%patch20 -p1 -b .libgo-fix-bootstrap~
+%patch21 -p1 -b .fix-cmd-go~
+
 echo 'Red Hat %{version}-%{gcc_release}' > gcc/DEV-PHASE
 
 cp -a libstdc++-v3/config/cpu/i{4,3}86/atomicity.h

libgo-install-internal-reflectlite-gox.patch

@@ -0,0 +1,176 @@
+From 72700543b67561ab6a466e93b4c0d4fa8e6530e6 Mon Sep 17 00:00:00 2001
+From: Ian Lance Taylor <iant@golang.org>
+Date: Sat, 15 Feb 2020 15:57:29 -0800
+Subject: [PATCH] libgo: install internal/reflectlite.gox
+
+This makes it possible to use gccgo to bootstrap Go 1.14.
+If we don't install this, gccgo can't compile the sort package.
+
+Fixes GCC PR go/93679
+
+Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/219617
+---
+ gcc/go/gofrontend/MERGE |  2 +-
+ libgo/Makefile.am       |  5 ++++
+ libgo/Makefile.in       | 63 ++++++++++++++++++++++++++++++++++++++-----------
+ 3 files changed, 55 insertions(+), 15 deletions(-)
+
+diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
+index e67d792..47dd5fb 100644
+--- a/gcc/go/gofrontend/MERGE
++++ b/gcc/go/gofrontend/MERGE
+@@ -1,4 +1,4 @@
+-f368afbbd466941dcc6717412d7182e122b40c93
++8505defaa91ecc5b42afd02eb335981e8b02b288
+ 
+ The first line of this file holds the git revision number of the last
+ merge done from the gofrontend repository.
+diff --git a/libgo/Makefile.am b/libgo/Makefile.am
+index 56d38f5..dea09de 100644
+--- a/libgo/Makefile.am
++++ b/libgo/Makefile.am
+@@ -397,6 +397,11 @@ toolexeclibgounicode_DATA = \
+ 	unicode/utf16.gox \
+ 	unicode/utf8.gox
+ 
++# Some internal packages are needed to bootstrap the gc toolchain.
++toolexeclibgointernaldir = $(toolexeclibgodir)/internal
++toolexeclibgointernal_DATA = \
++	internal/reflectlite.gox
++
+ # Some packages are only needed for tests, so unlike the other
+ # internal packages nothing will explicitly depend on them.
+ # Force them to be built.
+diff --git a/libgo/Makefile.in b/libgo/Makefile.in
+index 0ff6ba1..607b88c 100644
+--- a/libgo/Makefile.in
++++ b/libgo/Makefile.in
+@@ -174,6 +174,7 @@ am__installdirs = "$(DESTDIR)$(toolexeclibdir)" \
+ 	"$(DESTDIR)$(toolexeclibgoimagedir)" \
+ 	"$(DESTDIR)$(toolexeclibgoimagecolordir)" \
+ 	"$(DESTDIR)$(toolexeclibgoindexdir)" \
++	"$(DESTDIR)$(toolexeclibgointernaldir)" \
+ 	"$(DESTDIR)$(toolexeclibgoiodir)" \
+ 	"$(DESTDIR)$(toolexeclibgologdir)" \
+ 	"$(DESTDIR)$(toolexeclibgomathdir)" \
+@@ -335,13 +336,14 @@ DATA = $(noinst_DATA) $(toolexeclibgo_DATA) \
+ 	$(toolexeclibgoencoding_DATA) $(toolexeclibgogo_DATA) \
+ 	$(toolexeclibgohash_DATA) $(toolexeclibgohtml_DATA) \
+ 	$(toolexeclibgoimage_DATA) $(toolexeclibgoimagecolor_DATA) \
+-	$(toolexeclibgoindex_DATA) $(toolexeclibgoio_DATA) \
+-	$(toolexeclibgolog_DATA) $(toolexeclibgomath_DATA) \
+-	$(toolexeclibgomime_DATA) $(toolexeclibgonet_DATA) \
+-	$(toolexeclibgonethttp_DATA) $(toolexeclibgonetrpc_DATA) \
+-	$(toolexeclibgoos_DATA) $(toolexeclibgopath_DATA) \
+-	$(toolexeclibgoregexp_DATA) $(toolexeclibgoruntime_DATA) \
+-	$(toolexeclibgosync_DATA) $(toolexeclibgotesting_DATA) \
++	$(toolexeclibgoindex_DATA) $(toolexeclibgointernal_DATA) \
++	$(toolexeclibgoio_DATA) $(toolexeclibgolog_DATA) \
++	$(toolexeclibgomath_DATA) $(toolexeclibgomime_DATA) \
++	$(toolexeclibgonet_DATA) $(toolexeclibgonethttp_DATA) \
++	$(toolexeclibgonetrpc_DATA) $(toolexeclibgoos_DATA) \
++	$(toolexeclibgopath_DATA) $(toolexeclibgoregexp_DATA) \
++	$(toolexeclibgoruntime_DATA) $(toolexeclibgosync_DATA) \
++	$(toolexeclibgotesting_DATA) \
+ 	$(toolexeclibgotestinginternal_DATA) $(toolexeclibgotext_DATA) \
+ 	$(toolexeclibgotexttemplate_DATA) $(toolexeclibgounicode_DATA)
+ RECURSIVE_CLEAN_TARGETS = mostlyclean-recursive clean-recursive	\
+@@ -859,6 +861,12 @@ toolexeclibgounicode_DATA = \
+ 	unicode/utf8.gox
+ 
+ 
++# Some internal packages are needed to bootstrap the gc toolchain.
++toolexeclibgointernaldir = $(toolexeclibgodir)/internal
++toolexeclibgointernal_DATA = \
++	internal/reflectlite.gox
++
++
+ # Some packages are only needed for tests, so unlike the other
+ # internal packages nothing will explicitly depend on them.
+ # Force them to be built.
+@@ -1850,6 +1858,27 @@ uninstall-toolexeclibgoindexDATA:
+ 	@list='$(toolexeclibgoindex_DATA)'; test -n "$(toolexeclibgoindexdir)" || list=; \
+ 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+ 	dir='$(DESTDIR)$(toolexeclibgoindexdir)'; $(am__uninstall_files_from_dir)
++install-toolexeclibgointernalDATA: $(toolexeclibgointernal_DATA)
++	@$(NORMAL_INSTALL)
++	@list='$(toolexeclibgointernal_DATA)'; test -n "$(toolexeclibgointernaldir)" || list=; \
++	if test -n "$$list"; then \
++	  echo " $(MKDIR_P) '$(DESTDIR)$(toolexeclibgointernaldir)'"; \
++	  $(MKDIR_P) "$(DESTDIR)$(toolexeclibgointernaldir)" || exit 1; \
++	fi; \
++	for p in $$list; do \
++	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
++	  echo "$$d$$p"; \
++	done | $(am__base_list) | \
++	while read files; do \
++	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(toolexeclibgointernaldir)'"; \
++	  $(INSTALL_DATA) $$files "$(DESTDIR)$(toolexeclibgointernaldir)" || exit $$?; \
++	done
++
++uninstall-toolexeclibgointernalDATA:
++	@$(NORMAL_UNINSTALL)
++	@list='$(toolexeclibgointernal_DATA)'; test -n "$(toolexeclibgointernaldir)" || list=; \
++	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
++	dir='$(DESTDIR)$(toolexeclibgointernaldir)'; $(am__uninstall_files_from_dir)
+ install-toolexeclibgoioDATA: $(toolexeclibgoio_DATA)
+ 	@$(NORMAL_INSTALL)
+ 	@list='$(toolexeclibgoio_DATA)'; test -n "$(toolexeclibgoiodir)" || list=; \
+@@ -2319,7 +2348,7 @@ all-am: Makefile $(LIBRARIES) $(LTLIBRARIES) $(DATA) config.h \
+ 		all-local
+ installdirs: installdirs-recursive
+ installdirs-am:
+-	for dir in "$(DESTDIR)$(toolexeclibdir)" "$(DESTDIR)$(toolexeclibdir)" "$(DESTDIR)$(toolexeclibgodir)" "$(DESTDIR)$(toolexeclibgoarchivedir)" "$(DESTDIR)$(toolexeclibgocompressdir)" "$(DESTDIR)$(toolexeclibgocontainerdir)" "$(DESTDIR)$(toolexeclibgocryptodir)" "$(DESTDIR)$(toolexeclibgocryptox509dir)" "$(DESTDIR)$(toolexeclibgodatabasedir)" "$(DESTDIR)$(toolexeclibgodatabasesqldir)" "$(DESTDIR)$(toolexeclibgodebugdir)" "$(DESTDIR)$(toolexeclibgoencodingdir)" "$(DESTDIR)$(toolexeclibgogodir)" "$(DESTDIR)$(toolexeclibgohashdir)" "$(DESTDIR)$(toolexeclibgohtmldir)" "$(DESTDIR)$(toolexeclibgoimagedir)" "$(DESTDIR)$(toolexeclibgoimagecolordir)" "$(DESTDIR)$(toolexeclibgoindexdir)" "$(DESTDIR)$(toolexeclibgoiodir)" "$(DESTDIR)$(toolexeclibgologdir)" "$(DESTDIR)$(toolexeclibgomathdir)" "$(DESTDIR)$(toolexeclibgomimedir)" "$(DESTDIR)$(toolexeclibgonetdir)" "$(DESTDIR)$(toolexeclibgonethttpdir)" "$(DESTDIR)$(toolexeclibgonetrpcdir)" "$(DESTDIR)$(toolexeclibgoosdir)" "$(DESTDIR)$(toolexeclibgopathdir)" "$(DESTDIR)$(toolexeclibgoregexpdir)" "$(DESTDIR)$(toolexeclibgoruntimedir)" "$(DESTDIR)$(toolexeclibgosyncdir)" "$(DESTDIR)$(toolexeclibgotestingdir)" "$(DESTDIR)$(toolexeclibgotestinginternaldir)" "$(DESTDIR)$(toolexeclibgotextdir)" "$(DESTDIR)$(toolexeclibgotexttemplatedir)" "$(DESTDIR)$(toolexeclibgounicodedir)"; do \
++	for dir in "$(DESTDIR)$(toolexeclibdir)" "$(DESTDIR)$(toolexeclibdir)" "$(DESTDIR)$(toolexeclibgodir)" "$(DESTDIR)$(toolexeclibgoarchivedir)" "$(DESTDIR)$(toolexeclibgocompressdir)" "$(DESTDIR)$(toolexeclibgocontainerdir)" "$(DESTDIR)$(toolexeclibgocryptodir)" "$(DESTDIR)$(toolexeclibgocryptox509dir)" "$(DESTDIR)$(toolexeclibgodatabasedir)" "$(DESTDIR)$(toolexeclibgodatabasesqldir)" "$(DESTDIR)$(toolexeclibgodebugdir)" "$(DESTDIR)$(toolexeclibgoencodingdir)" "$(DESTDIR)$(toolexeclibgogodir)" "$(DESTDIR)$(toolexeclibgohashdir)" "$(DESTDIR)$(toolexeclibgohtmldir)" "$(DESTDIR)$(toolexeclibgoimagedir)" "$(DESTDIR)$(toolexeclibgoimagecolordir)" "$(DESTDIR)$(toolexeclibgoindexdir)" "$(DESTDIR)$(toolexeclibgointernaldir)" "$(DESTDIR)$(toolexeclibgoiodir)" "$(DESTDIR)$(toolexeclibgologdir)" "$(DESTDIR)$(toolexeclibgomathdir)" "$(DESTDIR)$(toolexeclibgomimedir)" "$(DESTDIR)$(toolexeclibgonetdir)" "$(DESTDIR)$(toolexeclibgonethttpdir)" "$(DESTDIR)$(toolexeclibgonetrpcdir)" "$(DESTDIR)$(toolexeclibgoosdir)" "$(DESTDIR)$(toolexeclibgopathdir)" "$(DESTDIR)$(toolexeclibgoregexpdir)" "$(DESTDIR)$(toolexeclibgoruntimedir)" "$(DESTDIR)$(toolexeclibgosyncdir)" "$(DESTDIR)$(toolexeclibgotestingdir)" "$(DESTDIR)$(toolexeclibgotestinginternaldir)" "$(DESTDIR)$(toolexeclibgotextdir)" "$(DESTDIR)$(toolexeclibgotexttemplatedir)" "$(DESTDIR)$(toolexeclibgounicodedir)"; do \
+ 	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+ 	done
+ install: install-recursive
+@@ -2401,7 +2430,8 @@ install-exec-am: install-exec-local install-toolexeclibLIBRARIES \
+ 	install-toolexeclibgohashDATA install-toolexeclibgohtmlDATA \
+ 	install-toolexeclibgoimageDATA \
+ 	install-toolexeclibgoimagecolorDATA \
+-	install-toolexeclibgoindexDATA install-toolexeclibgoioDATA \
++	install-toolexeclibgoindexDATA \
++	install-toolexeclibgointernalDATA install-toolexeclibgoioDATA \
+ 	install-toolexeclibgologDATA install-toolexeclibgomathDATA \
+ 	install-toolexeclibgomimeDATA install-toolexeclibgonetDATA \
+ 	install-toolexeclibgonethttpDATA \
+@@ -2470,8 +2500,10 @@ uninstall-am: uninstall-toolexeclibLIBRARIES \
+ 	uninstall-toolexeclibgohtmlDATA \
+ 	uninstall-toolexeclibgoimageDATA \
+ 	uninstall-toolexeclibgoimagecolorDATA \
+-	uninstall-toolexeclibgoindexDATA uninstall-toolexeclibgoioDATA \
+-	uninstall-toolexeclibgologDATA uninstall-toolexeclibgomathDATA \
++	uninstall-toolexeclibgoindexDATA \
++	uninstall-toolexeclibgointernalDATA \
++	uninstall-toolexeclibgoioDATA uninstall-toolexeclibgologDATA \
++	uninstall-toolexeclibgomathDATA \
+ 	uninstall-toolexeclibgomimeDATA uninstall-toolexeclibgonetDATA \
+ 	uninstall-toolexeclibgonethttpDATA \
+ 	uninstall-toolexeclibgonetrpcDATA \
+@@ -2512,7 +2544,8 @@ uninstall-am: uninstall-toolexeclibLIBRARIES \
+ 	install-toolexeclibgohashDATA install-toolexeclibgohtmlDATA \
+ 	install-toolexeclibgoimageDATA \
+ 	install-toolexeclibgoimagecolorDATA \
+-	install-toolexeclibgoindexDATA install-toolexeclibgoioDATA \
++	install-toolexeclibgoindexDATA \
++	install-toolexeclibgointernalDATA install-toolexeclibgoioDATA \
+ 	install-toolexeclibgologDATA install-toolexeclibgomathDATA \
+ 	install-toolexeclibgomimeDATA install-toolexeclibgonetDATA \
+ 	install-toolexeclibgonethttpDATA \
+@@ -2543,8 +2576,10 @@ uninstall-am: uninstall-toolexeclibLIBRARIES \
+ 	uninstall-toolexeclibgohtmlDATA \
+ 	uninstall-toolexeclibgoimageDATA \
+ 	uninstall-toolexeclibgoimagecolorDATA \
+-	uninstall-toolexeclibgoindexDATA uninstall-toolexeclibgoioDATA \
+-	uninstall-toolexeclibgologDATA uninstall-toolexeclibgomathDATA \
++	uninstall-toolexeclibgoindexDATA \
++	uninstall-toolexeclibgointernalDATA \
++	uninstall-toolexeclibgoioDATA uninstall-toolexeclibgologDATA \
++	uninstall-toolexeclibgomathDATA \
+ 	uninstall-toolexeclibgomimeDATA uninstall-toolexeclibgonetDATA \
+ 	uninstall-toolexeclibgonethttpDATA \
+ 	uninstall-toolexeclibgonetrpcDATA \
+-- 
+2.9.3
+