Index: binutils/gdb/aarch64-tdep.c
===================================================================
--- binutils.orig/gdb/aarch64-tdep.c	2017-07-31 14:52:02.599875688 +0100
+++ binutils/gdb/aarch64-tdep.c	2017-08-01 14:23:17.929876233 +0100
@@ -2997,7 +2997,7 @@ aarch64_gdbarch_init (struct gdbarch_inf
 
   /* Hook in the ABI-specific overrides, if they have been registered.  */
   info.target_desc = tdesc;
-  info.tdep_info = (void *) tdesc_data;
+  info.tdesc_data = tdesc_data;
   gdbarch_init_osabi (info, gdbarch);
 
   dwarf2_frame_set_init_reg (gdbarch, aarch64_dwarf2_frame_init_reg);
Index: binutils/gdb/amd64-linux-tdep.c
===================================================================
--- binutils.orig/gdb/amd64-linux-tdep.c	2017-07-31 21:03:10.055131614 +0100
+++ binutils/gdb/amd64-linux-tdep.c	2017-08-01 14:23:17.944140958 +0100
@@ -1863,8 +1863,7 @@ static void
 amd64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-  struct tdesc_arch_data *tdesc_data
-    = (struct tdesc_arch_data *) info.tdep_info;
+  struct tdesc_arch_data *tdesc_data = info.tdesc_data;
   const struct tdesc_feature *feature;
   int valid_p;
 
@@ -2077,8 +2076,7 @@ static void
 amd64_x32_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-  struct tdesc_arch_data *tdesc_data
-    = (struct tdesc_arch_data *) info.tdep_info;
+  struct tdesc_arch_data *tdesc_data = info.tdesc_data;
   const struct tdesc_feature *feature;
   int valid_p;
 
Index: binutils/gdb/gdbarch.h
===================================================================
--- binutils.orig/gdb/gdbarch.h	2017-07-31 21:03:13.557252461 +0100
+++ binutils/gdb/gdbarch.h	2017-08-01 16:46:56.895811012 +0100
@@ -1647,7 +1647,21 @@ struct gdbarch_info
   bfd *abfd;
 
   /* Use default: NULL (ZERO).  */
-  void *tdep_info;
+  union
+    {
+      /* Architecture-specific information.  The generic form for targets
+	 that have extra requirements.  */
+      struct gdbarch_tdep_info *tdep_info;
+
+      /* Architecture-specific target description data.  Numerous targets
+	 need only this, so give them an easy way to hold it.  */
+      struct tdesc_arch_data *tdesc_data;
+
+      /* SPU file system ID.  This is a single integer, so using the
+	 generic form would only complicate code.  Other targets may
+	 reuse this member if suitable.  */
+      int *id;
+    };
 
   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
   enum gdb_osabi osabi;
Index: binutils/gdb/gdbarch.sh
===================================================================
--- binutils.orig/gdb/gdbarch.sh	2017-07-31 21:03:13.569331250 +0100
+++ binutils/gdb/gdbarch.sh	2017-08-01 16:45:30.547572596 +0100
@@ -1474,7 +1474,21 @@ struct gdbarch_info
   bfd *abfd;
 
   /* Use default: NULL (ZERO).  */
-  void *tdep_info;
+  union
+    {
+      /* Architecture-specific information.  The generic form for targets
+	 that have extra requirements.  */
+      struct gdbarch_tdep_info *tdep_info;
+
+      /* Architecture-specific target description data.  Numerous targets
+	 need only this, so give them an easy way to hold it.  */
+      struct tdesc_arch_data *tdesc_data;
+
+      /* SPU file system ID.  This is a single integer, so using the
+	 generic form would only complicate code.  Other targets may
+	 reuse this member if suitable.  */
+      int *id;
+    };
 
   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
   enum gdb_osabi osabi;
Index: binutils/gdb/i386-linux-tdep.c
===================================================================
--- binutils.orig/gdb/i386-linux-tdep.c	2017-07-31 21:03:14.233751092 +0100
+++ binutils/gdb/i386-linux-tdep.c	2017-08-01 14:23:18.052865360 +0100
@@ -855,8 +855,7 @@ i386_linux_init_abi (struct gdbarch_info
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
   const struct target_desc *tdesc = info.target_desc;
-  struct tdesc_arch_data *tdesc_data
-    = (struct tdesc_arch_data *) info.tdep_info;
+  struct tdesc_arch_data *tdesc_data = info.tdesc_data;
   const struct tdesc_feature *feature;
   int valid_p;
 
Index: binutils/gdb/i386-tdep.c
===================================================================
--- binutils.orig/gdb/i386-tdep.c	2017-07-31 14:52:02.635555559 +0100
+++ binutils/gdb/i386-tdep.c	2017-08-01 14:23:18.068046742 +0100
@@ -8604,7 +8604,7 @@ i386_gdbarch_init (struct gdbarch_info i
   /* Hook in ABI-specific overrides, if they have been registered.
      Note: If INFO specifies a 64 bit arch, this is where we turn
      a 32-bit i386 into a 64-bit amd64.  */
-  info.tdep_info = tdesc_data;
+  info.tdesc_data = tdesc_data;
   gdbarch_init_osabi (info, gdbarch);
 
   if (!i386_validate_tdesc_p (tdep, tdesc_data))
Index: binutils/gdb/mips-linux-tdep.c
===================================================================
--- binutils.orig/gdb/mips-linux-tdep.c	2017-07-31 11:12:00.990250331 +0100
+++ binutils/gdb/mips-linux-tdep.c	2017-08-01 14:23:18.120974780 +0100
@@ -1616,8 +1616,7 @@ mips_linux_init_abi (struct gdbarch_info
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
   enum mips_abi abi = mips_abi (gdbarch);
-  struct tdesc_arch_data *tdesc_data
-    = (struct tdesc_arch_data *) info.tdep_info;
+  struct tdesc_arch_data *tdesc_data = info.tdesc_data;
 
   linux_init_abi (info, gdbarch);
 
Index: binutils/gdb/mips-tdep.c
===================================================================
--- binutils.orig/gdb/mips-tdep.c	2017-08-01 11:31:16.838764652 +0100
+++ binutils/gdb/mips-tdep.c	2017-08-01 14:23:18.134275124 +0100
@@ -8785,7 +8785,7 @@ mips_gdbarch_init (struct gdbarch_info i
   mips_register_g_packet_guesses (gdbarch);
 
   /* Hook in OS ABI-specific overrides, if they have been registered.  */
-  info.tdep_info = tdesc_data;
+  info.tdesc_data = tdesc_data;
   gdbarch_init_osabi (info, gdbarch);
 
   /* The hook may have adjusted num_regs, fetch the final value and
Index: binutils/gdb/nds32-tdep.c
===================================================================
--- binutils.orig/gdb/nds32-tdep.c	2017-07-31 09:19:35.824226786 +0100
+++ binutils/gdb/nds32-tdep.c	2017-08-01 14:23:18.156720737 +0100
@@ -2134,7 +2134,7 @@ nds32_gdbarch_init (struct gdbarch_info 
   nds32_add_reggroups (gdbarch);
 
   /* Hook in ABI-specific overrides, if they have been registered.  */
-  info.tdep_info = (void *) tdesc_data;
+  info.tdesc_data = tdesc_data;
   gdbarch_init_osabi (info, gdbarch);
 
   /* Override tdesc_register callbacks for system registers.  */
Index: binutils/gdb/ppc-linux-tdep.c
===================================================================
--- binutils.orig/gdb/ppc-linux-tdep.c	2017-07-31 09:19:36.292744792 +0100
+++ binutils/gdb/ppc-linux-tdep.c	2017-08-01 14:23:18.180982711 +0100
@@ -1350,7 +1350,7 @@ ppu2spu_sniffer (const struct frame_unwi
       info.bfd_arch_info = bfd_lookup_arch (bfd_arch_spu, bfd_mach_spu);
       info.byte_order = BFD_ENDIAN_BIG;
       info.osabi = GDB_OSABI_LINUX;
-      info.tdep_info = &data.id;
+      info.id = &data.id;
       data.gdbarch = gdbarch_find_by_info (info);
       if (!data.gdbarch)
 	return 0;
@@ -1650,8 +1650,7 @@ ppc_linux_init_abi (struct gdbarch_info 
                     struct gdbarch *gdbarch)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-  struct tdesc_arch_data *tdesc_data
-    = (struct tdesc_arch_data *) info.tdep_info;
+  struct tdesc_arch_data *tdesc_data = info.tdesc_data;
   static const char *const stap_integer_prefixes[] = { "i", NULL };
   static const char *const stap_register_indirection_prefixes[] = { "(",
 								    NULL };
Index: binutils/gdb/rs6000-tdep.c
===================================================================
--- binutils.orig/gdb/rs6000-tdep.c	2017-07-31 11:12:01.583503710 +0100
+++ binutils/gdb/rs6000-tdep.c	2017-08-01 14:23:18.195238425 +0100
@@ -6529,7 +6529,7 @@ rs6000_gdbarch_init (struct gdbarch_info
 
   /* Hook in ABI-specific overrides, if they have been registered.  */
   info.target_desc = tdesc;
-  info.tdep_info = tdesc_data;
+  info.tdesc_data = tdesc_data;
   gdbarch_init_osabi (info, gdbarch);
 
   switch (info.osabi)
Index: binutils/gdb/sparc-tdep.c
===================================================================
--- binutils.orig/gdb/sparc-tdep.c	2017-07-31 09:19:40.159610319 +0100
+++ binutils/gdb/sparc-tdep.c	2017-08-01 14:23:18.201296672 +0100
@@ -1906,7 +1906,7 @@ sparc32_gdbarch_init (struct gdbarch_inf
         }
 
       /* Target description may have changed. */
-      info.tdep_info = tdesc_data;
+      info.tdesc_data = tdesc_data;
       tdesc_use_registers (gdbarch, tdesc, tdesc_data);
     }
 
Index: binutils/gdb/spu-multiarch.c
===================================================================
--- binutils.orig/gdb/spu-multiarch.c	2017-07-31 09:19:40.344558366 +0100
+++ binutils/gdb/spu-multiarch.c	2017-08-01 14:23:18.210497307 +0100
@@ -107,7 +107,7 @@ spu_gdbarch (int spufs_fd)
   info.bfd_arch_info = bfd_lookup_arch (bfd_arch_spu, bfd_mach_spu);
   info.byte_order = BFD_ENDIAN_BIG;
   info.osabi = GDB_OSABI_LINUX;
-  info.tdep_info = &spufs_fd;
+  info.id = &spufs_fd;
   return gdbarch_find_by_info (info);
 }
 
Index: binutils/gdb/spu-tdep.c
===================================================================
--- binutils.orig/gdb/spu-tdep.c	2017-07-31 14:52:02.701013577 +0100
+++ binutils/gdb/spu-tdep.c	2017-08-01 14:23:18.271183468 +0100
@@ -2668,8 +2668,8 @@ spu_gdbarch_init (struct gdbarch_info in
   int id = -1;
 
   /* Which spufs ID was requested as address space?  */
-  if (info.tdep_info)
-    id = *(int *)info.tdep_info;
+  if (info.id)
+    id = *info.id;
   /* For objfile architectures of SPU solibs, decode the ID from the name.
      This assumes the filename convention employed by solib-spu.c.  */
   else if (info.abfd)
