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
182
183
184
185
186
187
188
|
/* Am29k-dependent portions of the RPC protocol
used with a VxWorks target
Contributed by Wind River Systems.
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 <stdio.h>
#include "defs.h"
#include "vx-share/regPacket.h"
#include "frame.h"
#include "inferior.h"
#include "wait.h"
#include "target.h"
#include "gdbcore.h"
#include "command.h"
#include "symtab.h"
#include "symfile.h" /* for struct complaint */
#include "gdb_string.h"
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
#ifdef _AIX /* IBM claims "void *malloc()" not char * */
#define malloc bogon_malloc
#endif
#include <rpc/rpc.h>
#include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */
#include <netdb.h>
#include "vx-share/ptrace.h"
#include "vx-share/xdr_ptrace.h"
#include "vx-share/xdr_ld.h"
#include "vx-share/xdr_rdb.h"
#include "vx-share/dbgRpcLib.h"
/* get rid of value.h if possible */
#include <value.h>
#include <symtab.h>
/* Flag set if target has fpu */
extern int target_has_fp;
/* Generic register read/write routines in remote-vx.c. */
extern void net_read_registers ();
extern void net_write_registers ();
/* Read a register or registers from the VxWorks target.
REGNO is the register to read, or -1 for all; currently,
it is ignored. FIXME look at regno to improve efficiency. */
void
vx_read_register (regno)
int regno;
{
char am29k_greg_packet[AM29K_GREG_PLEN];
char am29k_fpreg_packet[AM29K_FPREG_PLEN];
/* Get general-purpose registers. When copying values into
registers [], don't assume that a location in registers []
is properly aligned for the target data type. */
net_read_registers (am29k_greg_packet, AM29K_GREG_PLEN, PTRACE_GETREGS);
/* Now copy the register values into registers[].
Note that this code depends on the ordering of the REGNUMs
as defined in "tm-29k.h". */
bcopy (&am29k_greg_packet[AM29K_R_GR96],
®isters[REGISTER_BYTE (GR96_REGNUM)], 160 * AM29K_GREG_SIZE);
bcopy (&am29k_greg_packet[AM29K_R_VAB],
®isters[REGISTER_BYTE (VAB_REGNUM)], 15 * AM29K_GREG_SIZE);
registers[REGISTER_BYTE (INTE_REGNUM)] = am29k_greg_packet[AM29K_R_INTE];
bcopy (&am29k_greg_packet[AM29K_R_RSP],
®isters[REGISTER_BYTE (GR1_REGNUM)], 5 * AM29K_GREG_SIZE);
/* PAD For now, don't care about exop register */
memset (®isters[REGISTER_BYTE (EXO_REGNUM)], '\0', AM29K_GREG_SIZE);
/* If the target has floating point registers, fetch them.
Otherwise, zero the floating point register values in
registers[] for good measure, even though we might not
need to. */
if (target_has_fp)
{
net_read_registers (am29k_fpreg_packet, AM29K_FPREG_PLEN,
PTRACE_GETFPREGS);
registers[REGISTER_BYTE (FPE_REGNUM)] = am29k_fpreg_packet[AM29K_R_FPE];
registers[REGISTER_BYTE (FPS_REGNUM)] = am29k_fpreg_packet[AM29K_R_FPS];
/* PAD For now, don't care about registers (?) AI0 to q */
memset (®isters[REGISTER_BYTE (161)], '\0', 21 * AM29K_FPREG_SIZE);
}
else
{
memset (®isters[REGISTER_BYTE (FPE_REGNUM)], '\0', AM29K_FPREG_SIZE);
memset (®isters[REGISTER_BYTE (FPS_REGNUM)], '\0', AM29K_FPREG_SIZE);
/* PAD For now, don't care about registers (?) AI0 to q */
memset (®isters[REGISTER_BYTE (161)], '\0', 21 * AM29K_FPREG_SIZE);
}
/* Mark the register cache valid. */
registers_fetched ();
}
/* Store a register or registers into the VxWorks target.
REGNO is the register to store, or -1 for all; currently,
it is ignored. FIXME look at regno to improve efficiency. */
void
vx_write_register (regno)
int regno;
{
char am29k_greg_packet[AM29K_GREG_PLEN];
char am29k_fpreg_packet[AM29K_FPREG_PLEN];
/* Store general purpose registers. When copying values from
registers [], don't assume that a location in registers []
is properly aligned for the target data type. */
bcopy (®isters[REGISTER_BYTE (GR96_REGNUM)],
&am29k_greg_packet[AM29K_R_GR96], 160 * AM29K_GREG_SIZE);
bcopy (®isters[REGISTER_BYTE (VAB_REGNUM)],
&am29k_greg_packet[AM29K_R_VAB], 15 * AM29K_GREG_SIZE);
am29k_greg_packet[AM29K_R_INTE] = registers[REGISTER_BYTE (INTE_REGNUM)];
bcopy (®isters[REGISTER_BYTE (GR1_REGNUM)],
&am29k_greg_packet[AM29K_R_RSP], 5 * AM29K_GREG_SIZE);
net_write_registers (am29k_greg_packet, AM29K_GREG_PLEN, PTRACE_SETREGS);
/* Store floating point registers if the target has them. */
if (target_has_fp)
{
am29k_fpreg_packet[AM29K_R_FPE] = registers[REGISTER_BYTE (FPE_REGNUM)];
am29k_fpreg_packet[AM29K_R_FPS] = registers[REGISTER_BYTE (FPS_REGNUM)];
net_write_registers (am29k_fpreg_packet, AM29K_FPREG_PLEN,
PTRACE_SETFPREGS);
}
}
/* VxWorks zeroes fp when the task is initialized; we use this
to terminate the frame chain. Chain means here the nominal address of
a frame, that is, the return address (lr0) address in the stack. To
obtain the frame pointer (lr1) contents, we must add 4 bytes.
Note : may be we should modify init_frame_info() to get the frame pointer
and store it into the frame_info struct rather than reading its
contents when FRAME_CHAIN_VALID is invoked. */
int
vx29k_frame_chain_valid (chain, thisframe)
CORE_ADDR chain;
struct frame_info *thisframe; /* not used here */
{
int fp_contents;
read_memory ((CORE_ADDR)(chain + 4), (char *) &fp_contents, 4);
return (fp_contents != 0);
}
|
