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- ###############################################################################
- #
- # 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
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