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1###############################################################################
2#
3# MN10300 Low-level gdbstub routines
4#
5# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
6# Written by David Howells (dhowells@redhat.com)
7#
8# This program is free software; you can redistribute it and/or
9# modify it under the terms of the GNU General Public Licence
10# as published by the Free Software Foundation; either version
11# 2 of the Licence, or (at your option) any later version.
12#
13###############################################################################
14#include <linux/sys.h>
15#include <linux/linkage.h>
16#include <asm/smp.h>
17#include <asm/cache.h>
18#include <asm/cpu-regs.h>
19#include <asm/exceptions.h>
20#include <asm/frame.inc>
21#include <asm/serial-regs.h>
22
23 .text
24
25###############################################################################
26#
27# GDB stub read memory with guard
28# - D0 holds the memory address to read
29# - D1 holds the address to store the byte into
30#
31###############################################################################
32 .globl gdbstub_read_byte_guard
33 .globl gdbstub_read_byte_cont
34ENTRY(gdbstub_read_byte)
35 mov d0,a0
36 mov d1,a1
37 clr d0
38gdbstub_read_byte_guard:
39 movbu (a0),d1
40gdbstub_read_byte_cont:
41 movbu d1,(a1)
42 ret [],0
43
44 .globl gdbstub_read_word_guard
45 .globl gdbstub_read_word_cont
46ENTRY(gdbstub_read_word)
47 mov d0,a0
48 mov d1,a1
49 clr d0
50gdbstub_read_word_guard:
51 movhu (a0),d1
52gdbstub_read_word_cont:
53 movhu d1,(a1)
54 ret [],0
55
56 .globl gdbstub_read_dword_guard
57 .globl gdbstub_read_dword_cont
58ENTRY(gdbstub_read_dword)
59 mov d0,a0
60 mov d1,a1
61 clr d0
62gdbstub_read_dword_guard:
63 mov (a0),d1
64gdbstub_read_dword_cont:
65 mov d1,(a1)
66 ret [],0
67
68###############################################################################
69#
70# GDB stub write memory with guard
71# - D0 holds the byte to store
72# - D1 holds the memory address to write
73#
74###############################################################################
75 .globl gdbstub_write_byte_guard
76 .globl gdbstub_write_byte_cont
77ENTRY(gdbstub_write_byte)
78 mov d0,a0
79 mov d1,a1
80 clr d0
81gdbstub_write_byte_guard:
82 movbu a0,(a1)
83gdbstub_write_byte_cont:
84 ret [],0
85
86 .globl gdbstub_write_word_guard
87 .globl gdbstub_write_word_cont
88ENTRY(gdbstub_write_word)
89 mov d0,a0
90 mov d1,a1
91 clr d0
92gdbstub_write_word_guard:
93 movhu a0,(a1)
94gdbstub_write_word_cont:
95 ret [],0
96
97 .globl gdbstub_write_dword_guard
98 .globl gdbstub_write_dword_cont
99ENTRY(gdbstub_write_dword)
100 mov d0,a0
101 mov d1,a1
102 clr d0
103gdbstub_write_dword_guard:
104 mov a0,(a1)
105gdbstub_write_dword_cont:
106 ret [],0
107
108###############################################################################
109#
110# GDB stub BUG() trap
111#
112###############################################################################
113ENTRY(__gdbstub_bug_trap)
114 .byte 0xF7,0xF7 # don't use 0xFF as the JTAG unit preempts that
115 ret [],0
1###############################################################################
2#
3# MN10300 Low-level gdbstub routines
4#
5# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
6# Written by David Howells (dhowells@redhat.com)
7#
8# This program is free software; you can redistribute it and/or
9# modify it under the terms of the GNU General Public Licence
10# as published by the Free Software Foundation; either version
11# 2 of the Licence, or (at your option) any later version.
12#
13###############################################################################
14#include <linux/sys.h>
15#include <linux/linkage.h>
16#include <asm/smp.h>
17#include <asm/cache.h>
18#include <asm/cpu-regs.h>
19#include <asm/exceptions.h>
20#include <asm/frame.inc>
21#include <asm/serial-regs.h>
22
23 .text
24
25###############################################################################
26#
27# GDB stub read memory with guard
28# - D0 holds the memory address to read
29# - D1 holds the address to store the byte into
30#
31###############################################################################
32 .globl gdbstub_read_byte_guard
33 .globl gdbstub_read_byte_cont
34ENTRY(gdbstub_read_byte)
35 mov d0,a0
36 mov d1,a1
37 clr d0
38gdbstub_read_byte_guard:
39 movbu (a0),d1
40gdbstub_read_byte_cont:
41 movbu d1,(a1)
42 ret [],0
43
44 .globl gdbstub_read_word_guard
45 .globl gdbstub_read_word_cont
46ENTRY(gdbstub_read_word)
47 mov d0,a0
48 mov d1,a1
49 clr d0
50gdbstub_read_word_guard:
51 movhu (a0),d1
52gdbstub_read_word_cont:
53 movhu d1,(a1)
54 ret [],0
55
56 .globl gdbstub_read_dword_guard
57 .globl gdbstub_read_dword_cont
58ENTRY(gdbstub_read_dword)
59 mov d0,a0
60 mov d1,a1
61 clr d0
62gdbstub_read_dword_guard:
63 mov (a0),d1
64gdbstub_read_dword_cont:
65 mov d1,(a1)
66 ret [],0
67
68###############################################################################
69#
70# GDB stub write memory with guard
71# - D0 holds the byte to store
72# - D1 holds the memory address to write
73#
74###############################################################################
75 .globl gdbstub_write_byte_guard
76 .globl gdbstub_write_byte_cont
77ENTRY(gdbstub_write_byte)
78 mov d0,a0
79 mov d1,a1
80 clr d0
81gdbstub_write_byte_guard:
82 movbu a0,(a1)
83gdbstub_write_byte_cont:
84 ret [],0
85
86 .globl gdbstub_write_word_guard
87 .globl gdbstub_write_word_cont
88ENTRY(gdbstub_write_word)
89 mov d0,a0
90 mov d1,a1
91 clr d0
92gdbstub_write_word_guard:
93 movhu a0,(a1)
94gdbstub_write_word_cont:
95 ret [],0
96
97 .globl gdbstub_write_dword_guard
98 .globl gdbstub_write_dword_cont
99ENTRY(gdbstub_write_dword)
100 mov d0,a0
101 mov d1,a1
102 clr d0
103gdbstub_write_dword_guard:
104 mov a0,(a1)
105gdbstub_write_dword_cont:
106 ret [],0
107
108###############################################################################
109#
110# GDB stub BUG() trap
111#
112###############################################################################
113ENTRY(__gdbstub_bug_trap)
114 .byte 0xF7,0xF7 # don't use 0xFF as the JTAG unit preempts that
115 ret [],0