116 lines
2.8 KiB
ArmAsm
116 lines
2.8 KiB
ArmAsm
|
###############################################################################
|
||
|
|
#
|
||
|
|
# MN10300 Low-level gdbstub routines
|
||
|
|
#
|
||
|
|
# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
||
|
|
# Written by David Howells (dhowells@redhat.com)
|
||
|
|
#
|
||
|
|
# This program is free software; you can redistribute it and/or
|
||
|
|
# modify it under the terms of the GNU General Public Licence
|
||
|
|
# as published by the Free Software Foundation; either version
|
||
|
|
# 2 of the Licence, or (at your option) any later version.
|
||
|
|
#
|
||
|
|
###############################################################################
|
||
|
|
#include <linux/sys.h>
|
||
|
|
#include <linux/linkage.h>
|
||
|
|
#include <asm/smp.h>
|
||
|
|
#include <asm/cache.h>
|
||
|
|
#include <asm/cpu-regs.h>
|
||
|
|
#include <asm/exceptions.h>
|
||
|
|
#include <asm/frame.inc>
|
||
|
|
#include <asm/serial-regs.h>
|
||
|
|
|
||
|
|
.text
|
||
|
|
|
||
|
|
###############################################################################
|
||
|
|
#
|
||
|
|
# GDB stub read memory with guard
|
||
|
|
# - D0 holds the memory address to read
|
||
|
|
# - D1 holds the address to store the byte into
|
||
|
|
#
|
||
|
|
###############################################################################
|
||
|
|
.globl gdbstub_read_byte_guard
|
||
|
|
.globl gdbstub_read_byte_cont
|
||
|
|
ENTRY(gdbstub_read_byte)
|
||
|
|
mov d0,a0
|
||
|
|
mov d1,a1
|
||
|
|
clr d0
|
||
|
|
gdbstub_read_byte_guard:
|
||
|
|
movbu (a0),d1
|
||
|
|
gdbstub_read_byte_cont:
|
||
|
|
movbu d1,(a1)
|
||
|
|
ret [],0
|
||
|
|
|
||
|
|
.globl gdbstub_read_word_guard
|
||
|
|
.globl gdbstub_read_word_cont
|
||
|
|
ENTRY(gdbstub_read_word)
|
||
|
|
mov d0,a0
|
||
|
|
mov d1,a1
|
||
|
|
clr d0
|
||
|
|
gdbstub_read_word_guard:
|
||
|
|
movhu (a0),d1
|
||
|
|
gdbstub_read_word_cont:
|
||
|
|
movhu d1,(a1)
|
||
|
|
ret [],0
|
||
|
|
|
||
|
|
.globl gdbstub_read_dword_guard
|
||
|
|
.globl gdbstub_read_dword_cont
|
||
|
|
ENTRY(gdbstub_read_dword)
|
||
|
|
mov d0,a0
|
||
|
|
mov d1,a1
|
||
|
|
clr d0
|
||
|
|
gdbstub_read_dword_guard:
|
||
|
|
mov (a0),d1
|
||
|
|
gdbstub_read_dword_cont:
|
||
|
|
mov d1,(a1)
|
||
|
|
ret [],0
|
||
|
|
|
||
|
|
###############################################################################
|
||
|
|
#
|
||
|
|
# GDB stub write memory with guard
|
||
|
|
# - D0 holds the byte to store
|
||
|
|
# - D1 holds the memory address to write
|
||
|
|
#
|
||
|
|
###############################################################################
|
||
|
|
.globl gdbstub_write_byte_guard
|
||
|
|
.globl gdbstub_write_byte_cont
|
||
|
|
ENTRY(gdbstub_write_byte)
|
||
|
|
mov d0,a0
|
||
|
|
mov d1,a1
|
||
|
|
clr d0
|
||
|
|
gdbstub_write_byte_guard:
|
||
|
|
movbu a0,(a1)
|
||
|
|
gdbstub_write_byte_cont:
|
||
|
|
ret [],0
|
||
|
|
|
||
|
|
.globl gdbstub_write_word_guard
|
||
|
|
.globl gdbstub_write_word_cont
|
||
|
|
ENTRY(gdbstub_write_word)
|
||
|
|
mov d0,a0
|
||
|
|
mov d1,a1
|
||
|
|
clr d0
|
||
|
|
gdbstub_write_word_guard:
|
||
|
|
movhu a0,(a1)
|
||
|
|
gdbstub_write_word_cont:
|
||
|
|
ret [],0
|
||
|
|
|
||
|
|
.globl gdbstub_write_dword_guard
|
||
|
|
.globl gdbstub_write_dword_cont
|
||
|
|
ENTRY(gdbstub_write_dword)
|
||
|
|
mov d0,a0
|
||
|
|
mov d1,a1
|
||
|
|
clr d0
|
||
|
|
gdbstub_write_dword_guard:
|
||
|
|
mov a0,(a1)
|
||
|
|
gdbstub_write_dword_cont:
|
||
|
|
ret [],0
|
||
|
|
|
||
|
|
###############################################################################
|
||
|
|
#
|
||
|
|
# GDB stub BUG() trap
|
||
|
|
#
|
||
|
|
###############################################################################
|
||
|
|
ENTRY(__gdbstub_bug_trap)
|
||
|
|
.byte 0xF7,0xF7 # don't use 0xFF as the JTAG unit preempts that
|
||
|
|
ret [],0
|