gdb: Remove support for SH-5/SH64

Since bfd dropped support for SH-5, there's no point in keeping it in
GDB either.

This restores --enable-targets=all builds.

gdb/ChangeLog:
2018-04-16  Pedro Alves  <palves@redhat.com>

	* MAINTAINERS (sh): Remove.
	* Makefile.in (ALL_TARGET_OBS): Remove sh64-tdep.o.
	(HFILES_NO_SRCDIR): Remove sh64-tdep.h.
	(ALLDEPFILES): Remove sh64-tdep.c.
	* NEWS: Mentions that support for SH-5/SH64 is removed.
	* configure.tgt (sh*-*-linux*): Remove reference to sh64-tdep.o.
	(sh*-*-openbsd*): Ditto.
	(sh64-*-elf*): Remove.
	(sh*): Remove.
	* regcache.c (cooked_write_test): Remove bfd_mach_sh5 case.
	* sh-linux-tdep.c: Remove reference to bfd_mach_sh5.
	* sh-tdep.c: No longer include "sh64-tdep.h".
	(sh_gdbarch_init): Remove reference to bfd_mach_sh5.
	* sh64-tdep.c, sh64-tdep.h: Remove files.

gdb/ChangeLog

@@ -1,3 +1,20 @@
+2018-04-16  Pedro Alves  <palves@redhat.com>
+
+	* MAINTAINERS (sh): Remove.
+	* Makefile.in (ALL_TARGET_OBS): Remove sh64-tdep.o.
+	(HFILES_NO_SRCDIR): Remove sh64-tdep.h.
+	(ALLDEPFILES): Remove sh64-tdep.c.
+	* NEWS: Mentions that support for SH-5/SH64 is removed.
+	* configure.tgt (sh*-*-linux*): Remove reference to sh64-tdep.o.
+	(sh*-*-openbsd*): Ditto.
+	(sh64-*-elf*): Remove.
+	(sh*): Remove.
+	* regcache.c (cooked_write_test): Remove bfd_mach_sh5 case.
+	* sh-linux-tdep.c: Remove reference to bfd_mach_sh5.
+	* sh-tdep.c: No longer include "sh64-tdep.h".
+	(sh_gdbarch_init): Remove reference to bfd_mach_sh5.
+	* sh64-tdep.c, sh64-tdep.h: Remove files.
+
 2018-04-16  Pedro Alves  <palves@redhat.com>
 
 	* MAINTAINERS: Remove m88k.

gdb/MAINTAINERS

@@ -306,7 +306,6 @@ the native maintainer when resolving ABI issues.
 
 	score	--target=score-elf
 	sh		--target=sh-elf ,-Werror
-			--target=sh64-elf ,-Werror
 
 	sparc		--target=sparc64-solaris2.10 ,-Werror
 			(--target=sparc-elf broken)

gdb/Makefile.in

@@ -767,7 +767,6 @@ ALL_TARGET_OBS = \
 	sh-linux-tdep.o \
 	sh-nbsd-tdep.o \
 	sh-tdep.o \
-	sh64-tdep.o \
 	sol2-tdep.o \
 	solib-aix.o \
 	solib-darwin.o \
@@ -1355,7 +1354,6 @@ HFILES_NO_SRCDIR = \
 	ser-unix.h \
 	serial.h \
 	sh-tdep.h \
-	sh64-tdep.h \
 	sim-regno.h \
 	skip.h \
 	sol2-tdep.h \
@@ -2322,7 +2320,6 @@ ALLDEPFILES = \
 	sh-nbsd-nat.c \
 	sh-nbsd-tdep.c \
 	sh-tdep.c \
-	sh64-tdep.c \
 	sol2-tdep.c \
 	solib-aix.c \
 	solib-spu.c \

gdb/NEWS

@@ -31,6 +31,9 @@ RiscV ELF			riscv*-*-elf
 * Removed targets and native configurations
 
 m88k running OpenBSD  		m88*-*-openbsd*
+SH-5/SH64 ELF			sh64-*-elf*, SH-5/SH64 support in sh*
+SH-5/SH64 running GNU/Linux	SH-5/SH64 support in sh*-*-linux*
+SH-5/SH64 running OpenBSD 	SH-5/SH64 support in sh*-*-openbsd*
 
 *** Changes in GDB 8.1
 

gdb/configure.tgt

@@ -541,7 +541,7 @@ score-*-*)
 
 sh*-*-linux*)
 	# Target: GNU/Linux Super-H
-	gdb_target_obs="sh-tdep.o sh64-tdep.o sh-linux-tdep.o \
+	gdb_target_obs="sh-tdep.o sh-linux-tdep.o \
 			solib-svr4.o symfile-mem.o \
 			glibc-tdep.o linux-tdep.o"
 	gdb_sim=../sim/sh/libsim.a
@@ -554,16 +554,11 @@ sh*-*-netbsdelf* | sh*-*-knetbsd*-gnu)
 	;;
 sh*-*-openbsd*)
 	# Target: OpenBSD/sh
-	gdb_target_obs="sh-tdep.o sh64-tdep.o sh-nbsd-tdep.o"
+	gdb_target_obs="sh-tdep.o sh-nbsd-tdep.o"
-	;;
-sh64-*-elf*)
-	# Target: Renesas/Super-H 64 bit with simulator
-	gdb_target_obs="sh-tdep.o sh64-tdep.o"
-	gdb_sim=../sim/sh64/libsim.a
 	;;
 sh*)
 	# Target: Embedded Renesas Super-H processor
-	gdb_target_obs="sh-tdep.o sh64-tdep.o"
+	gdb_target_obs="sh-tdep.o"
 	gdb_sim=../sim/sh/libsim.a
 	;;
 

gdb/regcache.c

@@ -1786,10 +1786,6 @@ cooked_write_test (struct gdbarch *gdbarch)
 	   && gdbarch_ptr_bit (gdbarch) == 64
 	   && (regnum >= gdbarch_num_regs (gdbarch)
 	       && regnum <= gdbarch_num_regs (gdbarch) + 4))
-	  || (bfd_arch == bfd_arch_sh
-	      /* FPSCR_C_REGNUM in sh64 is hard to test.  */
-	      && gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh5
-	      && regnum == 243)
 	  || (bfd_arch == bfd_arch_spu
 	      /* SPU pseudo registers except SPU_SP_REGNUM are got by
 		 TARGET_OBJECT_SPU.  */

gdb/sh-linux-tdep.c

@@ -194,22 +194,17 @@ sh_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   set_gdbarch_fetch_tls_load_module_address (gdbarch,
                                              svr4_fetch_objfile_link_map);
 
-  /* Core files and signal handler frame unwinding are supported for
-     32-bit SH only, at present.  */
-  if (info.bfd_arch_info->mach != bfd_mach_sh5)
-    {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
   /* Remember regset characteristics.  The sizes should match
      elf_gregset_t and elf_fpregset_t from Linux.  */
-      tdep->core_gregmap = (struct sh_corefile_regmap *)gregs_table;
+  tdep->core_gregmap = (struct sh_corefile_regmap *) gregs_table;
   tdep->sizeof_gregset = 92;
-      tdep->core_fpregmap = (struct sh_corefile_regmap *)fpregs_table;
+  tdep->core_fpregmap = (struct sh_corefile_regmap *) fpregs_table;
   tdep->sizeof_fpregset = 136;
 
   tramp_frame_prepend_unwinder (gdbarch, &sh_linux_sigreturn_tramp_frame);
   tramp_frame_prepend_unwinder (gdbarch, &sh_linux_rt_sigreturn_tramp_frame);
-    }
 }
 
 void

gdb/sh-tdep.c

@@ -41,7 +41,6 @@
 #include "objfiles.h"
 
 #include "sh-tdep.h"
-#include "sh64-tdep.h"
 
 #include "elf-bfd.h"
 #include "solib-svr4.h"
@@ -2257,10 +2256,6 @@ sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   struct gdbarch *gdbarch;
   struct gdbarch_tdep *tdep;
 
-  /* SH5 is handled entirely in sh64-tdep.c.  */
-  if (info.bfd_arch_info->mach == bfd_mach_sh5)
-    return sh64_gdbarch_init (info, arches);
-
   /* If there is already a candidate, use it.  */
   arches = gdbarch_list_lookup_by_info (arches, &info);
   if (arches != NULL)

gdb/sh64-tdep.h

@@ -1,24 +0,0 @@
-/* Target-dependent definitions for Renesas Super-H, for GDB.
-   Copyright (C) 2012-2018 Free Software Foundation, Inc.
-
-   This file is part of GDB.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#ifndef SH64_TDEP_H
-#define SH64_TDEP_H
-
-extern gdbarch_init_ftype sh64_gdbarch_init;
-
-#endif /* SH64_TDEP_H */