156 lines
3.8 KiB
C
156 lines
3.8 KiB
C
/* 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 ();
|
|
}
|