gcc: remove Blackfin patches

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/gcc/6.4.0/892-libgcc-mkmap-symver-support-skip_underscore.patch

@@ -1,60 +0,0 @@
-From ae9c3e354440c4a0f105a9eabfb2f77be085ebc1 Mon Sep 17 00:00:00 2001
-From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-Date: Thu, 18 Aug 2016 17:59:16 +0200
-Subject: [PATCH] libgcc/mkmap-symver: support skip_underscore
-
-Some platforms, such as Blackfin, have a special prefix for assembly
-symbols as opposed to C symbols. For this reason, a function named
-"foo()" in C will in fact be visible as a symbol called "_foo" in the
-ELF binary.
-
-The current linker version script logic in libgcc doesn't take into
-account this situation properly. The Blackfin specific
-libgcc/config/bfin/libgcc-glibc.ver has an additional "_" in front of
-every symbol so that it matches the output of "nm" (which gets parsed to
-produce the final linker version script). But due to this additional
-"_", ld no longer matches with the symbols since "ld" does the matching
-with the original symbol name, not the one prefixed with "_".
-
-Due to this, none of the symbols in libgcc/config/bfin/libgcc-glibc.ver
-are actually matched with symbols in libgcc. This causes all libgcc
-symbols to be left as "LOCAL", which causes lots of "undefined
-reference" whenever some C or C++ code that calls a function of libgcc
-is compiled.
-
-To address this, this commit introduces a "skip_underscore" variable to
-the mkmap-symver script. It tells mkmap-symver to ignore the leading
-underscore from the "nm" output.
-
-Note that this new argument is different from the existing
-"leading_underscore" argument, which *adds* an additional underscore to
-the generated linker version script.
-
-Having this functionality paves the way to using the generic linker
-version information for Blackfin, instead of using a custom one.
-
-Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
----
- libgcc/mkmap-symver.awk | 6 +++++-
- 1 file changed, 5 insertions(+), 1 deletion(-)
-
-diff --git a/libgcc/mkmap-symver.awk b/libgcc/mkmap-symver.awk
-index 266832a..30bb179 100644
---- a/libgcc/mkmap-symver.awk
-+++ b/libgcc/mkmap-symver.awk
-@@ -47,7 +47,11 @@ state == "nm" && ($1 == "U" || $2 == "U") {
- 
- state == "nm" && NF == 3 {
-   split ($3, s, "@")
--  def[s[1]] = 1;
-+  if (skip_underscore)
-+      symname = substr(s[1], 2);
-+  else
-+      symname = s[1];
-+  def[symname] = 1;
-   sawsymbol = 1;
-   next;
- }
--- 
-2.7.4
-

package/gcc/6.4.0/894-libgcc-fix-DWARF-compilation-with-FDPIC-targets.patch

@@ -1,59 +0,0 @@
-From 9d9f97ca5d1ceba66677bf406c9b31027dc1f22e Mon Sep 17 00:00:00 2001
-From: Waldemar Brodkorb <wbx@openadk.org>
-Date: Fri, 19 Aug 2016 13:54:46 +0200
-Subject: [PATCH] libgcc: fix DWARF compilation with FDPIC targets
-
-The build of unwind-dw2-fde-dip.c currently fails for FDPIC targets with
-the following error:
-
-libgcc/unwind-dw2-fde-dip.c:167:31: error: storage size of 'load_base' isn't known
-   struct elf32_fdpic_loadaddr load_base;
-
-This patch addresses that by defining load_base with the appropriate
-type on FDPIC targets. It has been tested on FRV and Blackfin.
-
-Fixes PR gcc/68468.
-
-Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
-Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
----
- libgcc/unwind-dw2-fde-dip.c | 8 ++++++--
- 1 file changed, 6 insertions(+), 2 deletions(-)
-
-diff --git a/libgcc/unwind-dw2-fde-dip.c b/libgcc/unwind-dw2-fde-dip.c
-index f7a1c3f..801bce8 100644
---- a/libgcc/unwind-dw2-fde-dip.c
-+++ b/libgcc/unwind-dw2-fde-dip.c
-@@ -124,7 +124,11 @@ static struct frame_hdr_cache_element
- {
-   _Unwind_Ptr pc_low;
-   _Unwind_Ptr pc_high;
-+#if defined __FRV_FDPIC__ || defined __BFIN_FDPIC__
-+  struct elf32_fdpic_loadaddr load_base;
-+#else
-   _Unwind_Ptr load_base;
-+#endif
-   const ElfW(Phdr) *p_eh_frame_hdr;
-   const ElfW(Phdr) *p_dynamic;
-   struct frame_hdr_cache_element *link;
-@@ -163,7 +167,7 @@ _Unwind_IteratePhdrCallback (struct dl_phdr_info *info, size_t size, void *ptr)
-   struct unw_eh_callback_data *data = (struct unw_eh_callback_data *) ptr;
-   const ElfW(Phdr) *phdr, *p_eh_frame_hdr, *p_dynamic;
-   long n, match;
--#ifdef __FRV_FDPIC__
-+#if defined __FRV_FDPIC__ || defined __BFIN_FDPIC__
-   struct elf32_fdpic_loadaddr load_base;
- #else
-   _Unwind_Ptr load_base;
-@@ -347,7 +351,7 @@ _Unwind_IteratePhdrCallback (struct dl_phdr_info *info, size_t size, void *ptr)
- 	    break;
- 	  }
-     }
--# elif defined __FRV_FDPIC__ && defined __linux__
-+# elif (defined __FRV_FDPIC__ || defined __BFIN_FDPIC__) && defined __linux__
-   data->dbase = load_base.got_value;
- # else
- #  error What is DW_EH_PE_datarel base on this platform?
--- 
-2.7.4
-

package/gcc/6.4.0/895-bfin-define-REENTRANT.patch

@@ -1,17 +0,0 @@
-enable _REENTRANT when -lpthread is used
-
-Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
-
-diff -Nur gcc-6.2.0.orig/gcc/config/bfin/linux.h gcc-6.2.0/gcc/config/bfin/linux.h
---- gcc-6.2.0.orig/gcc/config/bfin/linux.h	2016-01-04 15:30:50.000000000 +0100
-+++ gcc-6.2.0/gcc/config/bfin/linux.h	2016-09-30 20:48:17.446636819 +0200
-@@ -38,6 +38,9 @@
-   "%{static:--start-group} %{mfast-fp:-lbffastfp} %G %L %{static:--end-group} \
-    %{!static:%{mfast-fp:-lbffastfp} %G}"
- 
-+#undef CPP_SPEC
-+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
-+
- #undef LINK_SPEC
- #define LINK_SPEC "\
-   %{mfdpic: -m elf32bfinfd -z text} %{shared} %{pie} \