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