/* GNU/Linux/SH specific low level interface, for the remote server for GDB.
- Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
+ Copyright (C) 1995-2017 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ 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-sh.c. */
+void init_registers_sh (void);
+extern const struct target_desc *tdesc_sh;
#ifdef HAVE_SYS_REG_H
#include <sys/reg.h>
#include <asm/ptrace.h>
-int num_regs = 41;
+#define sh_num_regs 41
/* Currently, don't check/send MQ. */
-int regmap[] = {
+static int sh_regmap[] = {
0, 4, 8, 12, 16, 20, 24, 28,
32, 36, 40, 44, 48, 52, 56, 60,
REG_MACH*4, REG_MACL*4, REG_SR*4,
REG_FPUL*4, REG_FPSCR*4,
- REG_FPREG0+0, REG_FPREG0+4, REG_FPREG0+8, REG_FPREG0+12,
- REG_FPREG0+16, REG_FPREG0+20, REG_FPREG0+24, REG_FPREG0+28,
- REG_FPREG0+32, REG_FPREG0+36, REG_FPREG0+40, REG_FPREG0+44,
- REG_FPREG0+48, REG_FPREG0+52, REG_FPREG0+56, REG_FPREG0+60,
+ REG_FPREG0*4+0, REG_FPREG0*4+4, REG_FPREG0*4+8, REG_FPREG0*4+12,
+ REG_FPREG0*4+16, REG_FPREG0*4+20, REG_FPREG0*4+24, REG_FPREG0*4+28,
+ REG_FPREG0*4+32, REG_FPREG0*4+36, REG_FPREG0*4+40, REG_FPREG0*4+44,
+ REG_FPREG0*4+48, REG_FPREG0*4+52, REG_FPREG0*4+56, REG_FPREG0*4+60,
};
-int
-cannot_store_register (int regno)
+static int
+sh_cannot_store_register (int regno)
{
return 0;
}
-int
-cannot_fetch_register (int regno)
+static int
+sh_cannot_fetch_register (int regno)
{
return 0;
}
+/* Correct in either endianness, obviously. */
+static const unsigned short sh_breakpoint = 0xc3c3;
+#define sh_breakpoint_len 2
+
+/* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */
+
+static const gdb_byte *
+sh_sw_breakpoint_from_kind (int kind, int *size)
+{
+ *size = sh_breakpoint_len;
+ return (const gdb_byte *) &sh_breakpoint;
+}
+
+static int
+sh_breakpoint_at (CORE_ADDR where)
+{
+ unsigned short insn;
+
+ (*the_target->read_memory) (where, (unsigned char *) &insn, 2);
+ if (insn == sh_breakpoint)
+ return 1;
+
+ /* If necessary, recognize more trap instructions here. GDB only uses the
+ one. */
+ return 0;
+}
+
+/* Support for hardware single step. */
+
+static int
+sh_supports_hardware_single_step (void)
+{
+ return 1;
+}
+
+/* Provide only a fill function for the general register set. ps_lgetregs
+ will use this for NPTL support. */
+
+static void sh_fill_gregset (struct regcache *regcache, void *buf)
+{
+ int i;
+
+ for (i = 0; i < 23; i++)
+ if (sh_regmap[i] != -1)
+ collect_register (regcache, i, (char *) buf + sh_regmap[i]);
+}
+
+static struct regset_info sh_regsets[] = {
+ { 0, 0, 0, 0, GENERAL_REGS, sh_fill_gregset, NULL },
+ NULL_REGSET
+};
+
+static struct regsets_info sh_regsets_info =
+ {
+ sh_regsets, /* regsets */
+ 0, /* num_regsets */
+ NULL, /* disabled_regsets */
+ };
+
+static struct usrregs_info sh_usrregs_info =
+ {
+ sh_num_regs,
+ sh_regmap,
+ };
+
+static struct regs_info regs_info =
+ {
+ NULL, /* regset_bitmap */
+ &sh_usrregs_info,
+ &sh_regsets_info
+ };
+
+static const struct regs_info *
+sh_regs_info (void)
+{
+ return ®s_info;
+}
+
+static void
+sh_arch_setup (void)
+{
+ current_process ()->tdesc = tdesc_sh;
+}
+
+struct linux_target_ops the_low_target = {
+ sh_arch_setup,
+ sh_regs_info,
+ sh_cannot_fetch_register,
+ sh_cannot_store_register,
+ NULL, /* fetch_register */
+ linux_get_pc_32bit,
+ linux_set_pc_32bit,
+ NULL, /* breakpoint_kind_from_pc */
+ sh_sw_breakpoint_from_kind,
+ NULL,
+ 0,
+ sh_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 */
+ sh_supports_hardware_single_step,
+};
+
+void
+initialize_low_arch (void)
+{
+ init_registers_sh ();
+
+ initialize_regsets_info (&sh_regsets_info);
+}
projects / deliverable / binutils-gdb.git / blobdiff