1 /* GNU/Linux/m32r specific low level interface, for the remote server for GDB.
2 Copyright (C) 2005-2020 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #include "linux-low.h"
26 /* Linux target op definitions for the m32r architecture. */
28 class m32r_target
: public linux_process_target
34 void low_arch_setup () override
;
37 /* The singleton target ops object. */
39 static m32r_target the_m32r_target
;
41 /* Defined in auto-generated file reg-m32r.c. */
42 void init_registers_m32r (void);
43 extern const struct target_desc
*tdesc_m32r
;
45 #define m32r_num_regs 25
47 static int m32r_regmap
[] = {
49 PT_R0
, PT_R1
, PT_R2
, PT_R3
, PT_R4
, PT_R5
, PT_R6
, PT_R7
,
50 PT_R8
, PT_R9
, PT_R10
, PT_R11
, PT_R12
, PT_FP
, PT_LR
, PT_SPU
,
51 PT_PSW
, PT_CBR
, PT_SPI
, PT_SPU
, PT_BPC
, PT_PC
, PT_ACCL
, PT_ACCH
, PT_EVB
53 4 * 4, 4 * 5, 4 * 6, 4 * 7, 4 * 0, 4 * 1, 4 * 2, 4 * 8,
54 4 * 9, 4 * 10, 4 * 11, 4 * 12, 4 * 13, 4 * 24, 4 * 25, 4 * 23,
55 4 * 19, 4 * 31, 4 * 26, 4 * 23, 4 * 20, 4 * 30, 4 * 16, 4 * 15, 4 * 32
60 m32r_cannot_store_register (int regno
)
62 return (regno
>= m32r_num_regs
);
66 m32r_cannot_fetch_register (int regno
)
68 return (regno
>= m32r_num_regs
);
71 static const unsigned short m32r_breakpoint
= 0x10f1;
72 #define m32r_breakpoint_len 2
74 /* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */
76 static const gdb_byte
*
77 m32r_sw_breakpoint_from_kind (int kind
, int *size
)
79 *size
= m32r_breakpoint_len
;
80 return (const gdb_byte
*) &m32r_breakpoint
;
84 m32r_breakpoint_at (CORE_ADDR where
)
88 the_target
->read_memory (where
, (unsigned char *) &insn
,
90 if (insn
== m32r_breakpoint
)
93 /* If necessary, recognize more trap instructions here. GDB only uses the
99 m32r_target::low_arch_setup ()
101 current_process ()->tdesc
= tdesc_m32r
;
104 /* Support for hardware single step. */
107 m32r_supports_hardware_single_step (void)
112 static struct usrregs_info m32r_usrregs_info
=
118 static struct regs_info regs_info
=
120 NULL
, /* regset_bitmap */
124 static const struct regs_info
*
125 m32r_regs_info (void)
130 struct linux_target_ops the_low_target
= {
132 m32r_cannot_fetch_register
,
133 m32r_cannot_store_register
,
134 NULL
, /* fetch_register */
137 NULL
, /* breakpoint_from_pc */
138 m32r_sw_breakpoint_from_kind
,
142 NULL
, /* supports_z_point_type */
143 NULL
, /* insert_point */
144 NULL
, /* remove_point */
145 NULL
, /* stopped_by_watchpoint */
146 NULL
, /* stopped_data_address */
147 NULL
, /* collect_ptrace_register */
148 NULL
, /* supply_ptrace_register */
149 NULL
, /* siginfo_fixup */
150 NULL
, /* new_process */
151 NULL
, /* delete_process */
152 NULL
, /* new_thread */
153 NULL
, /* delete_thread */
155 NULL
, /* prepare_to_resume */
156 NULL
, /* process_qsupported */
157 NULL
, /* supports_tracepoints */
158 NULL
, /* get_thread_area */
159 NULL
, /* install_fast_tracepoint_jump_pad */
161 NULL
, /* get_min_fast_tracepoint_insn_len */
162 NULL
, /* supports_range_stepping */
163 NULL
, /* breakpoint_kind_from_current_state */
164 m32r_supports_hardware_single_step
,
167 /* The linux target ops object. */
169 linux_process_target
*the_linux_target
= &the_m32r_target
;
172 initialize_low_arch (void)
174 init_registers_m32r ();