gdbserver: remove support for M32R

This port has been unmaintained for years and the upstream Linux kernel
does not support this architecture anymore, remove it.

gdbserver/ChangeLog:

	* Makefile.in (SFILES): Remove linux-m32r-low.cc.
	* configure.srv: Remove m32r case.
	* linux-m32r-low.cc: Remove.

Change-Id: I5617b2b1fd92aeec19b38e0e3c0b78adaafdb35b

4 files changed, 6 insertions, 169 deletions

diff --git a/gdbserver/ChangeLog b/gdbserver/ChangeLog
index c857f001404..bbfbf83c89b 100644
--- a/gdbserver/ChangeLog
+++ b/gdbserver/ChangeLog
@@ -1,5 +1,11 @@
 2020-06-12  Simon Marchi  <simon.marchi@efficios.com>
 
+	* Makefile.in (SFILES): Remove linux-m32r-low.cc.
+	* configure.srv: Remove m32r case.
+	* linux-m32r-low.cc: Remove.
+
+2020-06-12  Simon Marchi  <simon.marchi@efficios.com>
+
 	* Makefile.in (SFILES): Remove linux-cris-low.c.
 	* configure.srv: Remove cris cases.
 	* linux-cris-low.cc, linux-crisv32-low.cc: Remove.
diff --git a/gdbserver/Makefile.in b/gdbserver/Makefile.in
index 32996293817..80cc12e5860 100644
--- a/gdbserver/Makefile.in
+++ b/gdbserver/Makefile.in
@@ -182,7 +182,6 @@ SFILES = \
 	$(srcdir)/linux-arm-low.cc \
 	$(srcdir)/linux-ia64-low.cc \
 	$(srcdir)/linux-low.cc \
-	$(srcdir)/linux-m32r-low.cc \
 	$(srcdir)/linux-m68k-low.cc \
 	$(srcdir)/linux-mips-low.cc \
 	$(srcdir)/linux-nios2-low.cc \
diff --git a/gdbserver/configure.srv b/gdbserver/configure.srv
index e362c961703..76d2b8e7e02 100644
--- a/gdbserver/configure.srv
+++ b/gdbserver/configure.srv
@@ -125,11 +125,6 @@ case "${gdbserver_host}" in
 			srv_tgtobj="$srv_linux_obj linux-ia64-low.o"
 			srv_linux_usrregs=yes
 			;;
-  m32r*-*-linux*)	srv_regobj=reg-m32r.o
-			srv_tgtobj="$srv_linux_obj linux-m32r-low.o"
-			srv_linux_usrregs=yes
- 			srv_linux_thread_db=yes
-			;;
   m68*-*-linux*)	if test "$gdb_cv_m68k_is_coldfire" = yes; then
                           srv_regobj=reg-cf.o
                         else
diff --git a/gdbserver/linux-m32r-low.cc b/gdbserver/linux-m32r-low.cc
deleted file mode 100644
index 3f84b17302a..00000000000
--- a/gdbserver/linux-m32r-low.cc
+++ /dev/null
@@ -1,163 +0,0 @@
-/* GNU/Linux/m32r specific low level interface, for the remote server for GDB.
-   Copyright (C) 2005-2020 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/>.  */
-
-#include "server.h"
-#include "linux-low.h"
-
-#ifdef HAVE_SYS_REG_H
-#include <sys/reg.h>
-#endif
-
-/* Linux target op definitions for the m32r architecture.  */
-
-class m32r_target : public linux_process_target
-{
-public:
-
-  const regs_info *get_regs_info () override;
-
-  const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
-
-protected:
-
-  void low_arch_setup () override;
-
-  bool low_cannot_fetch_register (int regno) override;
-
-  bool low_cannot_store_register (int regno) override;
-
-  bool low_supports_breakpoints () override;
-
-  CORE_ADDR low_get_pc (regcache *regcache) override;
-
-  void low_set_pc (regcache *regcache, CORE_ADDR newpc) override;
-
-  bool low_breakpoint_at (CORE_ADDR pc) override;
-};
-
-/* The singleton target ops object.  */
-
-static m32r_target the_m32r_target;
-
-bool
-m32r_target::low_supports_breakpoints ()
-{
-  return true;
-}
-
-CORE_ADDR
-m32r_target::low_get_pc (regcache *regcache)
-{
-  return linux_get_pc_32bit (regcache);
-}
-
-void
-m32r_target::low_set_pc (regcache *regcache, CORE_ADDR pc)
-{
-  linux_set_pc_32bit (regcache, pc);
-}
-
-/* Defined in auto-generated file reg-m32r.c.  */
-void init_registers_m32r (void);
-extern const struct target_desc *tdesc_m32r;
-
-#define m32r_num_regs 25
-
-static int m32r_regmap[] = {
-#ifdef PT_R0
-  PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7,
-  PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_FP, PT_LR, PT_SPU,
-  PT_PSW, PT_CBR, PT_SPI, PT_SPU, PT_BPC, PT_PC, PT_ACCL, PT_ACCH, PT_EVB
-#else
-  4 * 4, 4 * 5, 4 * 6, 4 * 7, 4 * 0, 4 * 1, 4 * 2, 4 * 8,
-  4 * 9, 4 * 10, 4 * 11, 4 * 12, 4 * 13, 4 * 24, 4 * 25, 4 * 23,
-  4 * 19, 4 * 31, 4 * 26, 4 * 23, 4 * 20, 4 * 30, 4 * 16, 4 * 15, 4 * 32
-#endif
-};
-
-bool
-m32r_target::low_cannot_store_register (int regno)
-{
-  return (regno >= m32r_num_regs);
-}
-
-bool
-m32r_target::low_cannot_fetch_register (int regno)
-{
-  return (regno >= m32r_num_regs);
-}
-
-static const unsigned short m32r_breakpoint = 0x10f1;
-#define m32r_breakpoint_len 2
-
-/* Implementation of target ops method "sw_breakpoint_from_kind".  */
-
-const gdb_byte *
-m32r_target::sw_breakpoint_from_kind (int kind, int *size)
-{
-  *size = m32r_breakpoint_len;
-  return (const gdb_byte *) &m32r_breakpoint;
-}
-
-bool
-m32r_target::low_breakpoint_at (CORE_ADDR where)
-{
-  unsigned short insn;
-
-  read_memory (where, (unsigned char *) &insn, m32r_breakpoint_len);
-  if (insn == m32r_breakpoint)
-    return true;
-
-  /* If necessary, recognize more trap instructions here.  GDB only uses the
-     one.  */
-  return false;
-}
-
-void
-m32r_target::low_arch_setup ()
-{
-  current_process ()->tdesc = tdesc_m32r;
-}
-
-static struct usrregs_info m32r_usrregs_info =
-  {
-    m32r_num_regs,
-    m32r_regmap,
-  };
-
-static struct regs_info myregs_info =
-  {
-    NULL, /* regset_bitmap */
-    &m32r_usrregs_info,
-  };
-
-const regs_info *
-m32r_target::get_regs_info ()
-{
-  return &myregs_info;
-}
-
-/* The linux target ops object.  */
-
-linux_process_target *the_linux_target = &the_m32r_target;
-
-void
-initialize_low_arch (void)
-{
-  init_registers_m32r ();
-}