1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/* Low level interface to ns532 running mach 3.0.
Copyright (C) 1992 Free Software Foundation, 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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "inferior.h"
#include <stdio.h>
#include <mach.h>
#include <mach/message.h>
#include <mach/exception.h>
#include <mach_error.h>
#define private static
/* Find offsets to thread states at compile time.
* If your compiler does not grok this, calculate offsets
* offsets yourself and use them (or get a compatible compiler :-)
*/
#define REG_N_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->ts.reg)
#define REG_F_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->fs.reg)
/* at reg_offset[i] is the offset to the ns532_combined_state
* location where the gdb registers[i] is stored.
*/
static int reg_offset[] =
{
REG_N_OFFSET(r0), REG_N_OFFSET(r1), REG_N_OFFSET(r2), REG_N_OFFSET(r3),
REG_N_OFFSET(r4), REG_N_OFFSET(r5), REG_N_OFFSET(r6), REG_N_OFFSET(r7),
REG_F_OFFSET(l0a), REG_F_OFFSET(l1a),REG_F_OFFSET(l2a),REG_F_OFFSET(l3a),
REG_F_OFFSET(l4a), REG_F_OFFSET(l5a),REG_F_OFFSET(l6a),REG_F_OFFSET(l7a),
REG_N_OFFSET(sp), REG_N_OFFSET(fp), REG_N_OFFSET(pc), REG_N_OFFSET(psr),
REG_F_OFFSET(fsr),
REG_F_OFFSET(l0a), REG_F_OFFSET(l2a),REG_F_OFFSET(l4a),REG_F_OFFSET(l6a)
/* @@@ 532 has more double length floating point regs, not accessed currently */
};
/* Fetch COUNT contiguous registers from thread STATE starting from REGNUM
* Caller knows that the regs handled in one transaction are of same size.
*/
#define FETCH_REGS(state, regnum, count) \
memcpy (®isters[REGISTER_BYTE (regnum)], \
(char *)state+reg_offset[ regnum ], \
count*REGISTER_SIZE)
/* Store COUNT contiguous registers to thread STATE starting from REGNUM */
#define STORE_REGS(state, regnum, count) \
memcpy ((char *)state+reg_offset[ regnum ], \
®isters[REGISTER_BYTE (regnum)], \
count*REGISTER_SIZE)
/*
* Fetch inferiors registers for gdb.
* REGNO specifies which (as gdb views it) register, -1 for all.
*/
void
fetch_inferior_registers (regno)
int regno;
{
kern_return_t ret;
thread_state_data_t state;
unsigned int stateCnt = NS532_COMBINED_STATE_COUNT;
int index;
if (! MACH_PORT_VALID (current_thread))
error ("fetch inferior registers: Invalid thread");
if (must_suspend_thread)
setup_thread (current_thread, 1);
ret = thread_get_state (current_thread,
NS532_COMBINED_STATE,
state,
&stateCnt);
if (ret != KERN_SUCCESS)
message ("fetch_inferior_registers: %s ",
mach_error_string (ret));
#if 0
/* It may be more effective to store validate all of them,
* since we fetched them all anyway
*/
else if (regno != -1)
supply_register (regno, (char *)state+reg_offset[regno]);
#endif
else
{
for (index = 0; index < NUM_REGS; index++)
supply_register (index, (char *)state+reg_offset[index]);
}
if (must_suspend_thread)
setup_thread (current_thread, 0);
}
/* Store our register values back into the inferior.
* If REGNO is -1, do this for all registers.
* Otherwise, REGNO specifies which register
*
* On mach3 all registers are always saved in one call.
*/
void
store_inferior_registers (regno)
int regno;
{
kern_return_t ret;
thread_state_data_t state;
unsigned int stateCnt = NS532_COMBINED_STATE_COUNT;
register int index;
if (! MACH_PORT_VALID (current_thread))
error ("store inferior registers: Invalid thread");
if (must_suspend_thread)
setup_thread (current_thread, 1);
/* Fetch the state of the current thread */
ret = thread_get_state (current_thread,
NS532_COMBINED_STATE,
state,
&stateCnt);
if (ret != KERN_SUCCESS)
{
message ("store_inferior_registers (get): %s",
mach_error_string (ret));
if (must_suspend_thread)
setup_thread (current_thread, 0);
return;
}
/* move gdb's registers to thread's state
*
* Since we save all registers anyway, save the ones
* that gdb thinks are valid (e.g. ignore the regno
* parameter)
*/
#if 0
if (regno != -1)
STORE_REGS (state, regno, 1);
else
#endif
{
for (index = 0; index < NUM_REGS; index++)
STORE_REGS (state, index, 1);
}
/* Write gdb's current view of register to the thread
*/
ret = thread_set_state (current_thread,
NS532_COMBINED_STATE,
state,
NS532_COMBINED_STATE_COUNT);
if (ret != KERN_SUCCESS)
message ("store_inferior_registers (set): %s",
mach_error_string (ret));
if (must_suspend_thread)
setup_thread (current_thread, 0);
}
|
