Commit | Line | Data |
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c906108c | 1 | /* Am29k-dependent portions of the RPC protocol |
c906108c | 2 | |
c5aa993b | 3 | Contributed by Wind River Systems. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include <stdio.h> | |
23 | #include "defs.h" | |
24 | ||
c5aa993b | 25 | #include "vx-share/regPacket.h" |
c906108c SS |
26 | #include "frame.h" |
27 | #include "inferior.h" | |
c906108c SS |
28 | #include "target.h" |
29 | #include "gdbcore.h" | |
30 | #include "command.h" | |
31 | #include "symtab.h" | |
32 | #include "symfile.h" /* for struct complaint */ | |
33 | ||
34 | #include "gdb_string.h" | |
35 | #include <errno.h> | |
c906108c SS |
36 | #include <fcntl.h> |
37 | #include <sys/types.h> | |
38 | #include <sys/time.h> | |
39 | #include <sys/socket.h> | |
40 | ||
c5aa993b | 41 | #ifdef _AIX /* IBM claims "void *malloc()" not char * */ |
c906108c SS |
42 | #define malloc bogon_malloc |
43 | #endif | |
44 | ||
45 | #include <rpc/rpc.h> | |
46 | #include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */ | |
47 | #include <netdb.h> | |
48 | #include "vx-share/ptrace.h" | |
49 | #include "vx-share/xdr_ptrace.h" | |
50 | #include "vx-share/xdr_ld.h" | |
51 | #include "vx-share/xdr_rdb.h" | |
52 | #include "vx-share/dbgRpcLib.h" | |
53 | ||
54 | /* get rid of value.h if possible */ | |
55 | #include <value.h> | |
56 | #include <symtab.h> | |
57 | ||
58 | /* Flag set if target has fpu */ | |
59 | ||
60 | extern int target_has_fp; | |
61 | ||
62 | /* Generic register read/write routines in remote-vx.c. */ | |
63 | ||
64 | extern void net_read_registers (); | |
65 | extern void net_write_registers (); | |
66 | ||
67 | /* Read a register or registers from the VxWorks target. | |
68 | REGNO is the register to read, or -1 for all; currently, | |
69 | it is ignored. FIXME look at regno to improve efficiency. */ | |
70 | ||
71 | void | |
fba45db2 | 72 | vx_read_register (int regno) |
c906108c SS |
73 | { |
74 | char am29k_greg_packet[AM29K_GREG_PLEN]; | |
75 | char am29k_fpreg_packet[AM29K_FPREG_PLEN]; | |
76 | ||
77 | /* Get general-purpose registers. When copying values into | |
78 | registers [], don't assume that a location in registers [] | |
79 | is properly aligned for the target data type. */ | |
80 | ||
81 | net_read_registers (am29k_greg_packet, AM29K_GREG_PLEN, PTRACE_GETREGS); | |
82 | ||
83 | /* Now copy the register values into registers[]. | |
84 | Note that this code depends on the ordering of the REGNUMs | |
85 | as defined in "tm-29k.h". */ | |
86 | ||
87 | bcopy (&am29k_greg_packet[AM29K_R_GR96], | |
88 | ®isters[REGISTER_BYTE (GR96_REGNUM)], 160 * AM29K_GREG_SIZE); | |
89 | bcopy (&am29k_greg_packet[AM29K_R_VAB], | |
90 | ®isters[REGISTER_BYTE (VAB_REGNUM)], 15 * AM29K_GREG_SIZE); | |
91 | registers[REGISTER_BYTE (INTE_REGNUM)] = am29k_greg_packet[AM29K_R_INTE]; | |
92 | bcopy (&am29k_greg_packet[AM29K_R_RSP], | |
93 | ®isters[REGISTER_BYTE (GR1_REGNUM)], 5 * AM29K_GREG_SIZE); | |
94 | ||
95 | /* PAD For now, don't care about exop register */ | |
96 | ||
97 | memset (®isters[REGISTER_BYTE (EXO_REGNUM)], '\0', AM29K_GREG_SIZE); | |
98 | ||
99 | /* If the target has floating point registers, fetch them. | |
100 | Otherwise, zero the floating point register values in | |
101 | registers[] for good measure, even though we might not | |
102 | need to. */ | |
103 | ||
104 | if (target_has_fp) | |
105 | { | |
106 | net_read_registers (am29k_fpreg_packet, AM29K_FPREG_PLEN, | |
c5aa993b | 107 | PTRACE_GETFPREGS); |
c906108c SS |
108 | registers[REGISTER_BYTE (FPE_REGNUM)] = am29k_fpreg_packet[AM29K_R_FPE]; |
109 | registers[REGISTER_BYTE (FPS_REGNUM)] = am29k_fpreg_packet[AM29K_R_FPS]; | |
110 | ||
111 | /* PAD For now, don't care about registers (?) AI0 to q */ | |
112 | ||
113 | memset (®isters[REGISTER_BYTE (161)], '\0', 21 * AM29K_FPREG_SIZE); | |
114 | } | |
115 | else | |
c5aa993b | 116 | { |
c906108c SS |
117 | memset (®isters[REGISTER_BYTE (FPE_REGNUM)], '\0', AM29K_FPREG_SIZE); |
118 | memset (®isters[REGISTER_BYTE (FPS_REGNUM)], '\0', AM29K_FPREG_SIZE); | |
119 | ||
120 | /* PAD For now, don't care about registers (?) AI0 to q */ | |
121 | ||
122 | memset (®isters[REGISTER_BYTE (161)], '\0', 21 * AM29K_FPREG_SIZE); | |
123 | } | |
124 | ||
125 | /* Mark the register cache valid. */ | |
126 | ||
127 | registers_fetched (); | |
128 | } | |
129 | ||
130 | /* Store a register or registers into the VxWorks target. | |
131 | REGNO is the register to store, or -1 for all; currently, | |
132 | it is ignored. FIXME look at regno to improve efficiency. */ | |
133 | ||
134 | void | |
fba45db2 | 135 | vx_write_register (int regno) |
c906108c SS |
136 | { |
137 | char am29k_greg_packet[AM29K_GREG_PLEN]; | |
138 | char am29k_fpreg_packet[AM29K_FPREG_PLEN]; | |
139 | ||
140 | /* Store general purpose registers. When copying values from | |
141 | registers [], don't assume that a location in registers [] | |
142 | is properly aligned for the target data type. */ | |
143 | ||
144 | bcopy (®isters[REGISTER_BYTE (GR96_REGNUM)], | |
145 | &am29k_greg_packet[AM29K_R_GR96], 160 * AM29K_GREG_SIZE); | |
146 | bcopy (®isters[REGISTER_BYTE (VAB_REGNUM)], | |
147 | &am29k_greg_packet[AM29K_R_VAB], 15 * AM29K_GREG_SIZE); | |
148 | am29k_greg_packet[AM29K_R_INTE] = registers[REGISTER_BYTE (INTE_REGNUM)]; | |
149 | bcopy (®isters[REGISTER_BYTE (GR1_REGNUM)], | |
150 | &am29k_greg_packet[AM29K_R_RSP], 5 * AM29K_GREG_SIZE); | |
151 | ||
152 | net_write_registers (am29k_greg_packet, AM29K_GREG_PLEN, PTRACE_SETREGS); | |
153 | ||
154 | /* Store floating point registers if the target has them. */ | |
155 | ||
156 | if (target_has_fp) | |
157 | { | |
158 | am29k_fpreg_packet[AM29K_R_FPE] = registers[REGISTER_BYTE (FPE_REGNUM)]; | |
159 | am29k_fpreg_packet[AM29K_R_FPS] = registers[REGISTER_BYTE (FPS_REGNUM)]; | |
160 | ||
161 | net_write_registers (am29k_fpreg_packet, AM29K_FPREG_PLEN, | |
c5aa993b | 162 | PTRACE_SETFPREGS); |
c906108c SS |
163 | } |
164 | } | |
165 | ||
166 | /* VxWorks zeroes fp when the task is initialized; we use this | |
167 | to terminate the frame chain. Chain means here the nominal address of | |
168 | a frame, that is, the return address (lr0) address in the stack. To | |
169 | obtain the frame pointer (lr1) contents, we must add 4 bytes. | |
170 | Note : may be we should modify init_frame_info() to get the frame pointer | |
c5aa993b | 171 | and store it into the frame_info struct rather than reading its |
c338868a | 172 | contents when FRAME_CHAIN_VALID is invoked. THISFRAME is unused. */ |
c906108c SS |
173 | |
174 | int | |
c338868a | 175 | vx29k_frame_chain_valid (CORE_ADDR chain, struct frame_info *thisframe) |
c906108c | 176 | { |
c5aa993b | 177 | int fp_contents; |
c906108c | 178 | |
c5aa993b JM |
179 | read_memory ((CORE_ADDR) (chain + 4), (char *) &fp_contents, 4); |
180 | return (fp_contents != 0); | |
c906108c | 181 | } |