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4ba796ad KH |
1 | /* i80960-dependent portions of the RPC protocol |
2 | used with a VxWorks target | |
3 | ||
4 | Contributed by Wind River Systems. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
21 | ||
22 | #include <stdio.h> | |
23 | #include "defs.h" | |
24 | ||
25 | #include "vx-share/regPacket.h" | |
26 | #include "frame.h" | |
27 | #include "inferior.h" | |
28 | #include "wait.h" | |
29 | #include "target.h" | |
30 | #include "gdbcore.h" | |
31 | #include "command.h" | |
32 | #include "symtab.h" | |
33 | #include "symfile.h" /* for struct complaint */ | |
34 | ||
2b576293 | 35 | #include "gdb_string.h" |
4ba796ad KH |
36 | #include <errno.h> |
37 | #include <signal.h> | |
38 | #include <fcntl.h> | |
39 | #include <sys/types.h> | |
40 | #include <sys/time.h> | |
41 | #include <sys/socket.h> | |
42 | ||
43 | #ifdef _AIX /* IBM claims "void *malloc()" not char * */ | |
44 | #define malloc bogon_malloc | |
45 | #endif | |
46 | ||
47 | #include <rpc/rpc.h> | |
48 | #include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */ | |
49 | #include <netdb.h> | |
50 | #include "vx-share/ptrace.h" | |
51 | #include "vx-share/xdr_ptrace.h" | |
52 | #include "vx-share/xdr_ld.h" | |
53 | #include "vx-share/xdr_rdb.h" | |
54 | #include "vx-share/dbgRpcLib.h" | |
55 | ||
56 | /* get rid of value.h if possible */ | |
57 | #include <value.h> | |
58 | #include <symtab.h> | |
59 | ||
60 | /* Flag set if target has fpu */ | |
61 | ||
62 | extern int target_has_fp; | |
63 | ||
64 | /* 960 floating point format descriptor, from "i960-tdep.c." */ | |
65 | ||
66 | extern struct ext_format ext_format_i960; | |
67 | ||
68 | /* Generic register read/write routines in remote-vx.c. */ | |
69 | ||
70 | extern void net_read_registers (); | |
71 | extern void net_write_registers (); | |
72 | ||
73 | /* Read a register or registers from the VxWorks target. | |
74 | REGNO is the register to read, or -1 for all; currently, | |
75 | it is ignored. FIXME look at regno to improve efficiency. */ | |
76 | ||
77 | void | |
78 | vx_read_register (regno) | |
79 | int regno; | |
80 | { | |
81 | char i960_greg_packet[I960_GREG_PLEN]; | |
82 | char i960_fpreg_packet[I960_FPREG_PLEN]; | |
83 | ||
84 | /* Get general-purpose registers. When copying values into | |
85 | registers [], don't assume that a location in registers [] | |
86 | is properly aligned for the target data type. */ | |
87 | ||
88 | net_read_registers (i960_greg_packet, I960_GREG_PLEN, PTRACE_GETREGS); | |
89 | ||
90 | bcopy (&i960_greg_packet[I960_R_R0], | |
91 | ®isters[REGISTER_BYTE (R0_REGNUM)], 16 * I960_GREG_SIZE); | |
92 | bcopy (&i960_greg_packet[I960_R_G0], | |
93 | ®isters[REGISTER_BYTE (G0_REGNUM)], 16 * I960_GREG_SIZE); | |
94 | bcopy (&i960_greg_packet[I960_R_PCW], | |
95 | ®isters[REGISTER_BYTE (PCW_REGNUM)], sizeof (int)); | |
96 | bcopy (&i960_greg_packet[I960_R_ACW], | |
97 | ®isters[REGISTER_BYTE (ACW_REGNUM)], sizeof (int)); | |
98 | bcopy (&i960_greg_packet[I960_R_TCW], | |
99 | ®isters[REGISTER_BYTE (TCW_REGNUM)], sizeof (int)); | |
100 | ||
101 | /* If the target has floating point registers, fetch them. | |
102 | Otherwise, zero the floating point register values in | |
103 | registers[] for good measure, even though we might not | |
104 | need to. */ | |
105 | ||
106 | if (target_has_fp) | |
107 | { | |
108 | net_read_registers (i960_fpreg_packet, I960_FPREG_PLEN, | |
109 | PTRACE_GETFPREGS); | |
110 | bcopy (&i960_fpreg_packet[I960_R_FP0], | |
111 | ®isters[REGISTER_BYTE (FP0_REGNUM)], | |
112 | REGISTER_RAW_SIZE (FP0_REGNUM) * 4); | |
113 | } | |
114 | else | |
115 | bzero (®isters[REGISTER_BYTE (FP0_REGNUM)], | |
116 | REGISTER_RAW_SIZE (FP0_REGNUM) * 4); | |
117 | ||
118 | /* Mark the register cache valid. */ | |
119 | ||
120 | registers_fetched (); | |
121 | } | |
122 | ||
123 | /* Store a register or registers into the VxWorks target. | |
124 | REGNO is the register to store, or -1 for all; currently, | |
125 | it is ignored. FIXME look at regno to improve efficiency. */ | |
126 | ||
127 | void | |
128 | vx_write_register (regno) | |
129 | int regno; | |
130 | { | |
131 | char i960_greg_packet[I960_GREG_PLEN]; | |
132 | char i960_fpreg_packet[I960_FPREG_PLEN]; | |
133 | ||
134 | /* Store floating-point registers. When copying values from | |
135 | registers [], don't assume that a location in registers [] | |
136 | is properly aligned for the target data type. */ | |
137 | ||
138 | bcopy (®isters[REGISTER_BYTE (R0_REGNUM)], | |
139 | &i960_greg_packet[I960_R_R0], 16 * I960_GREG_SIZE); | |
140 | bcopy (®isters[REGISTER_BYTE (G0_REGNUM)], | |
141 | &i960_greg_packet[I960_R_G0], 16 * I960_GREG_SIZE); | |
142 | bcopy (®isters[REGISTER_BYTE (PCW_REGNUM)], | |
143 | &i960_greg_packet[I960_R_PCW], sizeof (int)); | |
144 | bcopy (®isters[REGISTER_BYTE (ACW_REGNUM)], | |
145 | &i960_greg_packet[I960_R_ACW], sizeof (int)); | |
146 | bcopy (®isters[REGISTER_BYTE (TCW_REGNUM)], | |
147 | &i960_greg_packet[I960_R_TCW], sizeof (int)); | |
148 | ||
149 | net_write_registers (i960_greg_packet, I960_GREG_PLEN, PTRACE_SETREGS); | |
150 | ||
151 | /* Store floating point registers if the target has them. */ | |
152 | ||
153 | if (target_has_fp) | |
154 | { | |
155 | bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)], | |
156 | &i960_fpreg_packet[I960_R_FP0], | |
157 | REGISTER_RAW_SIZE (FP0_REGNUM) * 4); | |
158 | ||
159 | net_write_registers (i960_fpreg_packet, I960_FPREG_PLEN, | |
160 | PTRACE_SETFPREGS); | |
161 | } | |
162 | } | |
163 |