frv: only use binutils 2.27, allow to compile libstdc++ (buildtime tested)

target/config/Config.in.binutils

@@ -11,6 +11,7 @@ default ADK_TOOLCHAIN_BINUTILS_2_26_1 if ADK_TARGET_ARCH_H8300
 default ADK_TOOLCHAIN_BINUTILS_2_26_1 if ADK_TARGET_ARCH_M68K && !ADK_TARGET_CPU_CF
 default ADK_TOOLCHAIN_BINUTILS_2_26_1 if ADK_TARGET_ARCH_MOXIE
 default ADK_TOOLCHAIN_BINUTILS_2_26_1 if ADK_TARGET_ARCH_XTENSA
+default ADK_TOOLCHAIN_BINUTILS_2_26_1 if ADK_TARGET_ARCH_FRV
 default ADK_TOOLCHAIN_BINUTILS_2_25_1
 
 config ADK_TOOLCHAIN_BINUTILS_GIT
@@ -30,12 +31,14 @@ config ADK_TOOLCHAIN_BINUTILS_2_26_1
 	bool "2.26.1"
 	depends on !ADK_TARGET_ARCH_ARC
 	depends on !ADK_TARGET_ARCH_AVR32
+	depends on !ADK_TARGET_ARCH_FRV
 	depends on !ADK_TARGET_ARCH_NDS32
 
 config ADK_TOOLCHAIN_BINUTILS_2_25_1
 	bool "2.25.1"
 	depends on !ADK_TARGET_ARCH_ARC
 	depends on !ADK_TARGET_ARCH_AVR32
+	depends on !ADK_TARGET_ARCH_FRV
 	depends on !ADK_TARGET_ARCH_H8300
 	depends on !ADK_TARGET_ARCH_MOXIE
 	depends on !ADK_TARGET_ARCH_NDS32
@@ -46,6 +49,7 @@ config ADK_TOOLCHAIN_BINUTILS_2_24
 	depends on !ADK_TARGET_ARCH_ARC
 	depends on !ADK_TARGET_ARCH_AVR32
 	depends on !ADK_TARGET_ARCH_CRIS
+	depends on !ADK_TARGET_ARCH_FRV
 	depends on !ADK_TARGET_ARCH_H8300
 	depends on !ADK_TARGET_ARCH_MOXIE
 

toolchain/binutils/patches/2.27/frv.patch

@@ -0,0 +1,27 @@
+diff -Nur binutils-2.27.orig/bfd/elf32-frv.c binutils-2.27/bfd/elf32-frv.c
+--- binutils-2.27.orig/bfd/elf32-frv.c	2016-08-03 09:36:50.000000000 +0200
++++ binutils-2.27/bfd/elf32-frv.c	2016-08-16 14:04:27.941065290 +0200
+@@ -5723,10 +5723,6 @@
+     }
+   if (frvfdpic_got_section (info))
+     {
+-      BFD_ASSERT (frvfdpic_gotrel_section (info)->size
+-		  == (frvfdpic_gotrel_section (info)->reloc_count
+-		      * sizeof (Elf32_External_Rel)));
+-
+       if (frvfdpic_gotfixup_section (info))
+ 	{
+ 	  struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
+@@ -5766,12 +5762,6 @@
+ 	    }
+ 	}
+     }
+-  if (frvfdpic_pltrel_section (info))
+-    {
+-      BFD_ASSERT (frvfdpic_pltrel_section (info)->size
+-		  == (frvfdpic_pltrel_section (info)->reloc_count
+-		      * sizeof (Elf32_External_Rel)));
+-    }
+ 
+ 
+   if (elf_hash_table (info)->dynamic_sections_created)

toolchain/gcc/patches/6.1.0/frv-remove-write-macro.patch

@@ -0,0 +1,52 @@
+diff -Nur gcc-6.1.0.orig/gcc/config/frv/frv.h gcc-6.1.0/gcc/config/frv/frv.h
+--- gcc-6.1.0.orig/gcc/config/frv/frv.h	2016-01-04 15:30:50.000000000 +0100
++++ gcc-6.1.0/gcc/config/frv/frv.h	2016-08-16 13:31:32.652520944 +0200
+@@ -1350,11 +1350,8 @@
+ #define TRAMPOLINE_TEMPLATE_NAME "__trampoline_template"
+ #endif
+ 
+-#define Twrite _write
+-
+ #if ! __FRV_FDPIC__
+ #define TRANSFER_FROM_TRAMPOLINE					\
+-extern int Twrite (int, const void *, unsigned);			\
+ 									\
+ void									\
+ __trampoline_setup (short * addr, int size, int fnaddr, int sc)		\
+@@ -1366,8 +1363,6 @@
+ 									\
+   if (size < 20)							\
+     {									\
+-      Twrite (2, "__trampoline_setup bad size\n",			\
+-	      sizeof ("__trampoline_setup bad size\n") - 1);		\
+       exit (-1);							\
+     }									\
+ 									\
+@@ -1397,7 +1392,6 @@
+ 	"\tjmpl @(gr0,gr6)\n");
+ #else
+ #define TRANSFER_FROM_TRAMPOLINE					\
+-extern int Twrite (int, const void *, unsigned);			\
+ 									\
+ void									\
+ __trampoline_setup (addr, size, fnaddr, sc)				\
+@@ -1414,8 +1408,6 @@
+ 									\
+   if (size != 32)							\
+     {									\
+-      Twrite (2, "__trampoline_setup bad size\n",			\
+-	      sizeof ("__trampoline_setup bad size\n") - 1);		\
+       exit (-1);							\
+     }									\
+ 									\
+diff -Nur gcc-6.1.0.orig/gcc/config/frv/linux.h gcc-6.1.0/gcc/config/frv/linux.h
+--- gcc-6.1.0.orig/gcc/config/frv/linux.h	2016-01-04 15:30:50.000000000 +0100
++++ gcc-6.1.0/gcc/config/frv/linux.h	2016-08-16 13:31:06.763517719 +0200
+@@ -68,7 +68,4 @@
+ 
+ #undef INVOKE__main
+ 
+-#undef Twrite
+-#define Twrite __write
+-
+ #endif /* __FRV_LINUX_H__ */