mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
160 lines
4.0 KiB
C
160 lines
4.0 KiB
C
/* GNU/Linux/BFIN specific low level interface, for the remote server for GDB.
|
|
|
|
Copyright (C) 2005-2018 Free Software Foundation, Inc.
|
|
|
|
Contributed by Analog Devices, 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"
|
|
#include <asm/ptrace.h>
|
|
|
|
/* Defined in auto-generated file reg-bfin.c. */
|
|
void init_registers_bfin (void);
|
|
extern const struct target_desc *tdesc_bfin;
|
|
|
|
static int bfin_regmap[] =
|
|
{
|
|
PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7,
|
|
PT_P0, PT_P1, PT_P2, PT_P3, PT_P4, PT_P5, PT_USP, PT_FP,
|
|
PT_I0, PT_I1, PT_I2, PT_I3, PT_M0, PT_M1, PT_M2, PT_M3,
|
|
PT_B0, PT_B1, PT_B2, PT_B3, PT_L0, PT_L1, PT_L2, PT_L3,
|
|
PT_A0X, PT_A0W, PT_A1X, PT_A1W, PT_ASTAT, PT_RETS,
|
|
PT_LC0, PT_LT0, PT_LB0, PT_LC1, PT_LT1, PT_LB1,
|
|
-1 /* PT_CYCLES */, -1 /* PT_CYCLES2 */,
|
|
-1 /* PT_USP */, PT_SEQSTAT, PT_SYSCFG, PT_PC, PT_RETX, PT_RETN, PT_RETE,
|
|
PT_PC,
|
|
};
|
|
|
|
#define bfin_num_regs ARRAY_SIZE (bfin_regmap)
|
|
|
|
static int
|
|
bfin_cannot_store_register (int regno)
|
|
{
|
|
return (regno >= bfin_num_regs);
|
|
}
|
|
|
|
static int
|
|
bfin_cannot_fetch_register (int regno)
|
|
{
|
|
return (regno >= bfin_num_regs);
|
|
}
|
|
|
|
#define bfin_breakpoint_len 2
|
|
static const gdb_byte bfin_breakpoint[bfin_breakpoint_len] = {0xa1, 0x00};
|
|
|
|
/* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */
|
|
|
|
static const gdb_byte *
|
|
bfin_sw_breakpoint_from_kind (int kind, int *size)
|
|
{
|
|
*size = bfin_breakpoint_len;
|
|
return bfin_breakpoint;
|
|
}
|
|
|
|
static int
|
|
bfin_breakpoint_at (CORE_ADDR where)
|
|
{
|
|
unsigned char insn[bfin_breakpoint_len];
|
|
|
|
read_inferior_memory(where, insn, bfin_breakpoint_len);
|
|
if (insn[0] == bfin_breakpoint[0]
|
|
&& insn[1] == bfin_breakpoint[1])
|
|
return 1;
|
|
|
|
/* If necessary, recognize more trap instructions here. GDB only uses the
|
|
one. */
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
bfin_arch_setup (void)
|
|
{
|
|
current_process ()->tdesc = tdesc_bfin;
|
|
}
|
|
|
|
/* Support for hardware single step. */
|
|
|
|
static int
|
|
bfin_supports_hardware_single_step (void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static struct usrregs_info bfin_usrregs_info =
|
|
{
|
|
bfin_num_regs,
|
|
bfin_regmap,
|
|
};
|
|
|
|
static struct regs_info regs_info =
|
|
{
|
|
NULL, /* regset_bitmap */
|
|
&bfin_usrregs_info,
|
|
};
|
|
|
|
static const struct regs_info *
|
|
bfin_regs_info (void)
|
|
{
|
|
return ®s_info;
|
|
}
|
|
|
|
struct linux_target_ops the_low_target = {
|
|
bfin_arch_setup,
|
|
bfin_regs_info,
|
|
bfin_cannot_fetch_register,
|
|
bfin_cannot_store_register,
|
|
NULL, /* fetch_register */
|
|
linux_get_pc_32bit,
|
|
linux_set_pc_32bit,
|
|
NULL, /* breakpoint_kind_from_pc */
|
|
bfin_sw_breakpoint_from_kind,
|
|
NULL, /* get_next_pcs */
|
|
2,
|
|
bfin_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 */
|
|
bfin_supports_hardware_single_step,
|
|
};
|
|
|
|
|
|
void
|
|
initialize_low_arch (void)
|
|
{
|
|
init_registers_bfin ();
|
|
}
|