| /* GNU/Linux/m32r specific low level interface, for the remote server for GDB. |
| Copyright (C) 2005-2016 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 |
| |
| /* 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 |
| }; |
| |
| static int |
| m32r_cannot_store_register (int regno) |
| { |
| return (regno >= m32r_num_regs); |
| } |
| |
| static int |
| m32r_cannot_fetch_register (int regno) |
| { |
| return (regno >= m32r_num_regs); |
| } |
| |
| static const unsigned short m32r_breakpoint = 0x10f1; |
| #define m32r_breakpoint_len 2 |
| |
| /* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */ |
| |
| static const gdb_byte * |
| m32r_sw_breakpoint_from_kind (int kind, int *size) |
| { |
| *size = m32r_breakpoint_len; |
| return (const gdb_byte *) &m32r_breakpoint; |
| } |
| |
| static int |
| m32r_breakpoint_at (CORE_ADDR where) |
| { |
| unsigned short insn; |
| |
| (*the_target->read_memory) (where, (unsigned char *) &insn, |
| m32r_breakpoint_len); |
| if (insn == m32r_breakpoint) |
| return 1; |
| |
| /* If necessary, recognize more trap instructions here. GDB only uses the |
| one. */ |
| return 0; |
| } |
| |
| static void |
| m32r_arch_setup (void) |
| { |
| current_process ()->tdesc = tdesc_m32r; |
| } |
| |
| /* Support for hardware single step. */ |
| |
| static int |
| m32r_supports_hardware_single_step (void) |
| { |
| return 1; |
| } |
| |
| static struct usrregs_info m32r_usrregs_info = |
| { |
| m32r_num_regs, |
| m32r_regmap, |
| }; |
| |
| static struct regs_info regs_info = |
| { |
| NULL, /* regset_bitmap */ |
| &m32r_usrregs_info, |
| }; |
| |
| static const struct regs_info * |
| m32r_regs_info (void) |
| { |
| return ®s_info; |
| } |
| |
| struct linux_target_ops the_low_target = { |
| m32r_arch_setup, |
| m32r_regs_info, |
| m32r_cannot_fetch_register, |
| m32r_cannot_store_register, |
| NULL, /* fetch_register */ |
| linux_get_pc_32bit, |
| linux_set_pc_32bit, |
| NULL, /* breakpoint_from_pc */ |
| m32r_sw_breakpoint_from_kind, |
| NULL, |
| 0, |
| m32r_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, /* new_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 */ |
| m32r_supports_hardware_single_step, |
| }; |
| |
| void |
| initialize_low_arch (void) |
| { |
| init_registers_m32r (); |
| } |