gdbserver: rename source files to .cc

For the same reasons outlined in the previous patch, this patch renames
gdbserver source files to .cc.

I have moved the "-x c++" switch to only those rules that require it.

gdbserver/ChangeLog:

	* Makefile.in: Rename source files from .c to .cc.
	* %.c: Rename to %.cc.
	* configure.ac: Rename server.c to server.cc.
	* configure: Re-generate.

1 files changed, 255 insertions, 0 deletions

diff --git a/gdbserver/linux-m68k-low.cc b/gdbserver/linux-m68k-low.cc
new file mode 100644
index 0000000..246b295
--- /dev/null
+++ b/gdbserver/linux-m68k-low.cc
@@ -0,0 +1,255 @@
+/* GNU/Linux/m68k specific low level interface, for the remote server for GDB.
+   Copyright (C) 1995-2020 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"
+
+/* Defined in auto-generated file reg-m68k.c.  */
+void init_registers_m68k (void);
+extern const struct target_desc *tdesc_m68k;
+
+#ifdef HAVE_SYS_REG_H
+#include <sys/reg.h>
+#endif
+
+#define m68k_num_regs 29
+#define m68k_num_gregs 18
+
+/* This table must line up with REGISTER_NAMES in tm-m68k.h */
+static int m68k_regmap[] =
+{
+#ifdef PT_D0
+  PT_D0 * 4, PT_D1 * 4, PT_D2 * 4, PT_D3 * 4,
+  PT_D4 * 4, PT_D5 * 4, PT_D6 * 4, PT_D7 * 4,
+  PT_A0 * 4, PT_A1 * 4, PT_A2 * 4, PT_A3 * 4,
+  PT_A4 * 4, PT_A5 * 4, PT_A6 * 4, PT_USP * 4,
+  PT_SR * 4, PT_PC * 4,
+#else
+  14 * 4, 0 * 4, 1 * 4, 2 * 4, 3 * 4, 4 * 4, 5 * 4, 6 * 4,
+  7 * 4, 8 * 4, 9 * 4, 10 * 4, 11 * 4, 12 * 4, 13 * 4, 15 * 4,
+  17 * 4, 18 * 4,
+#endif
+#ifdef PT_FP0
+  PT_FP0 * 4, PT_FP1 * 4, PT_FP2 * 4, PT_FP3 * 4,
+  PT_FP4 * 4, PT_FP5 * 4, PT_FP6 * 4, PT_FP7 * 4,
+  PT_FPCR * 4, PT_FPSR * 4, PT_FPIAR * 4
+#else
+  21 * 4, 24 * 4, 27 * 4, 30 * 4, 33 * 4, 36 * 4,
+  39 * 4, 42 * 4, 45 * 4, 46 * 4, 47 * 4
+#endif
+};
+
+static int
+m68k_cannot_store_register (int regno)
+{
+  return (regno >= m68k_num_regs);
+}
+
+static int
+m68k_cannot_fetch_register (int regno)
+{
+  return (regno >= m68k_num_regs);
+}
+
+#ifdef HAVE_PTRACE_GETREGS
+#include <sys/procfs.h>
+#include "nat/gdb_ptrace.h"
+
+static void
+m68k_fill_gregset (struct regcache *regcache, void *buf)
+{
+  int i;
+
+  for (i = 0; i < m68k_num_gregs; i++)
+    collect_register (regcache, i, (char *) buf + m68k_regmap[i]);
+}
+
+static void
+m68k_store_gregset (struct regcache *regcache, const void *buf)
+{
+  int i;
+
+  for (i = 0; i < m68k_num_gregs; i++)
+    supply_register (regcache, i, (const char *) buf + m68k_regmap[i]);
+}
+
+static void
+m68k_fill_fpregset (struct regcache *regcache, void *buf)
+{
+  int i;
+
+  for (i = m68k_num_gregs; i < m68k_num_regs; i++)
+    collect_register (regcache, i, ((char *) buf
+			 + (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
+}
+
+static void
+m68k_store_fpregset (struct regcache *regcache, const void *buf)
+{
+  int i;
+
+  for (i = m68k_num_gregs; i < m68k_num_regs; i++)
+    supply_register (regcache, i, ((const char *) buf
+			 + (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
+}
+
+#endif /* HAVE_PTRACE_GETREGS */
+
+static struct regset_info m68k_regsets[] = {
+#ifdef HAVE_PTRACE_GETREGS
+  { PTRACE_GETREGS, PTRACE_SETREGS, 0, sizeof (elf_gregset_t),
+    GENERAL_REGS,
+    m68k_fill_gregset, m68k_store_gregset },
+  { PTRACE_GETFPREGS, PTRACE_SETFPREGS, 0, sizeof (elf_fpregset_t),
+    FP_REGS,
+    m68k_fill_fpregset, m68k_store_fpregset },
+#endif /* HAVE_PTRACE_GETREGS */
+  NULL_REGSET
+};
+
+static const gdb_byte m68k_breakpoint[] = { 0x4E, 0x4F };
+#define m68k_breakpoint_len 2
+
+/* Implementation of linux_target_ops method "sw_breakpoint_from_kind".  */
+
+static const gdb_byte *
+m68k_sw_breakpoint_from_kind (int kind, int *size)
+{
+  *size = m68k_breakpoint_len;
+  return m68k_breakpoint;
+}
+
+static int
+m68k_breakpoint_at (CORE_ADDR pc)
+{
+  unsigned char c[2];
+
+  read_inferior_memory (pc, c, 2);
+  if (c[0] == 0x4E && c[1] == 0x4F)
+    return 1;
+
+  return 0;
+}
+
+#include <asm/ptrace.h>
+
+#ifdef PTRACE_GET_THREAD_AREA
+/* Fetch the thread-local storage pointer for libthread_db.  */
+
+ps_err_e
+ps_get_thread_area (struct ps_prochandle *ph,
+		    lwpid_t lwpid, int idx, void **base)
+{
+  if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
+    return PS_ERR;
+
+  /* IDX is the bias from the thread pointer to the beginning of the
+     thread descriptor.  It has to be subtracted due to implementation
+     quirks in libthread_db.  */
+  *base = (void *) ((char *)*base - idx);
+
+  return PS_OK;
+}
+#endif /* PTRACE_GET_THREAD_AREA */
+
+static struct regsets_info m68k_regsets_info =
+  {
+    m68k_regsets, /* regsets */
+    0, /* num_regsets */
+    NULL, /* disabled_regsets */
+  };
+
+static struct usrregs_info m68k_usrregs_info =
+  {
+    m68k_num_regs,
+    m68k_regmap,
+  };
+
+static struct regs_info regs_info =
+  {
+    NULL, /* regset_bitmap */
+    &m68k_usrregs_info,
+    &m68k_regsets_info
+  };
+
+static const struct regs_info *
+m68k_regs_info (void)
+{
+  return &regs_info;
+}
+
+static void
+m68k_arch_setup (void)
+{
+  current_process ()->tdesc = tdesc_m68k;
+}
+
+/* Support for hardware single step.  */
+
+static int
+m68k_supports_hardware_single_step (void)
+{
+  return 1;
+}
+
+struct linux_target_ops the_low_target = {
+  m68k_arch_setup,
+  m68k_regs_info,
+  m68k_cannot_fetch_register,
+  m68k_cannot_store_register,
+  NULL, /* fetch_register */
+  linux_get_pc_32bit,
+  linux_set_pc_32bit,
+  NULL, /* breakpoint_kind_from_pc */
+  m68k_sw_breakpoint_from_kind,
+  NULL,
+  2,
+  m68k_breakpoint_at,
+  NULL, /* supports_z_point_type */
+  NULL, /* insert_point */
+  NULL, /* remove_point */
+  NULL, /* stopped_by_watchpoint */
+  NULL, /* stopped_data_address */
+  NULL, /* collect_ptrace_register */
+  NULL, /* supply_ptrace_register */
+  NULL, /* siginfo_fixup */
+  NULL, /* new_process */
+  NULL, /* delete_process */
+  NULL, /* new_thread */
+  NULL, /* delete_thread */
+  NULL, /* new_fork */
+  NULL, /* prepare_to_resume */
+  NULL, /* process_qsupported */
+  NULL, /* supports_tracepoints */
+  NULL, /* get_thread_area */
+  NULL, /* install_fast_tracepoint_jump_pad */
+  NULL, /* emit_ops */
+  NULL, /* get_min_fast_tracepoint_insn_len */
+  NULL, /* supports_range_stepping */
+  NULL, /* breakpoint_kind_from_current_state */
+  m68k_supports_hardware_single_step,
+};
+
+void
+initialize_low_arch (void)
+{
+  /* Initialize the Linux target descriptions.  */
+  init_registers_m68k ();
+
+  initialize_regsets_info (&m68k_regsets_info);
+}