1 /* MIPS-dependent portions of the RPC protocol
2 used with a VxWorks target
4 Contributed by Wind River Systems.
6 This file is part of GDB.
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.
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.
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., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
26 #include "vx-share/regPacket.h"
33 #include "symfile.h" /* for struct complaint */
35 #include "gdb_string.h"
38 #include <sys/types.h>
40 #include <sys/socket.h>
42 #include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */
44 #include "vx-share/ptrace.h"
45 #include "vx-share/xdr_ptrace.h"
46 #include "vx-share/xdr_ld.h"
47 #include "vx-share/xdr_rdb.h"
48 #include "vx-share/dbgRpcLib.h"
50 /* get rid of value.h if possible */
54 /* Flag set if target has fpu */
56 extern int target_has_fp;
58 /* Generic register read/write routines in remote-vx.c. */
60 extern void net_read_registers ();
61 extern void net_write_registers ();
63 /* Read a register or registers from the VxWorks target.
64 REGNO is the register to read, or -1 for all; currently,
65 it is ignored. FIXME look at regno to improve efficiency. */
68 vx_read_register (int regno)
70 char mips_greg_packet[MIPS_GREG_PLEN];
71 char mips_fpreg_packet[MIPS_FPREG_PLEN];
73 /* Get general-purpose registers. */
75 net_read_registers (mips_greg_packet, MIPS_GREG_PLEN, PTRACE_GETREGS);
77 /* this code copies the registers obtained by RPC
78 stored in a structure(s) like this :
87 into a stucture like this:
93 0x8C BAD --- Not available currently
94 0x90 CAUSE --- Not available currently
98 0x11C FIR --- Not available currently
99 0x120 FP --- Not available currently
101 structure is 0x124 (292) bytes in length */
103 /* Copy the general registers. */
105 bcopy (&mips_greg_packet[MIPS_R_GP0], ®isters[0], 32 * MIPS_GREG_SIZE);
107 /* Copy SR, LO, HI, and PC. */
109 bcopy (&mips_greg_packet[MIPS_R_SR],
110 ®isters[REGISTER_BYTE (PS_REGNUM)], MIPS_GREG_SIZE);
111 bcopy (&mips_greg_packet[MIPS_R_LO],
112 ®isters[REGISTER_BYTE (LO_REGNUM)], MIPS_GREG_SIZE);
113 bcopy (&mips_greg_packet[MIPS_R_HI],
114 ®isters[REGISTER_BYTE (HI_REGNUM)], MIPS_GREG_SIZE);
115 bcopy (&mips_greg_packet[MIPS_R_PC],
116 ®isters[REGISTER_BYTE (PC_REGNUM)], MIPS_GREG_SIZE);
118 /* If the target has floating point registers, fetch them.
119 Otherwise, zero the floating point register values in
120 registers[] for good measure, even though we might not
125 net_read_registers (mips_fpreg_packet, MIPS_FPREG_PLEN,
128 /* Copy the floating point registers. */
130 bcopy (&mips_fpreg_packet[MIPS_R_FP0],
131 ®isters[REGISTER_BYTE (FP0_REGNUM)],
132 REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
134 /* Copy the floating point control/status register (fpcsr). */
136 bcopy (&mips_fpreg_packet[MIPS_R_FPCSR],
137 ®isters[REGISTER_BYTE (FCRCS_REGNUM)],
138 REGISTER_RAW_SIZE (FCRCS_REGNUM));
142 bzero ((char *) ®isters[REGISTER_BYTE (FP0_REGNUM)],
143 REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
144 bzero ((char *) ®isters[REGISTER_BYTE (FCRCS_REGNUM)],
145 REGISTER_RAW_SIZE (FCRCS_REGNUM));
148 /* Mark the register cache valid. */
150 registers_fetched ();
153 /* Store a register or registers into the VxWorks target.
154 REGNO is the register to store, or -1 for all; currently,
155 it is ignored. FIXME look at regno to improve efficiency. */
157 vx_write_register (int regno)
159 char mips_greg_packet[MIPS_GREG_PLEN];
160 char mips_fpreg_packet[MIPS_FPREG_PLEN];
162 /* Store general registers. */
164 bcopy (®isters[0], &mips_greg_packet[MIPS_R_GP0], 32 * MIPS_GREG_SIZE);
166 /* Copy SR, LO, HI, and PC. */
168 bcopy (®isters[REGISTER_BYTE (PS_REGNUM)],
169 &mips_greg_packet[MIPS_R_SR], MIPS_GREG_SIZE);
170 bcopy (®isters[REGISTER_BYTE (LO_REGNUM)],
171 &mips_greg_packet[MIPS_R_LO], MIPS_GREG_SIZE);
172 bcopy (®isters[REGISTER_BYTE (HI_REGNUM)],
173 &mips_greg_packet[MIPS_R_HI], MIPS_GREG_SIZE);
174 bcopy (®isters[REGISTER_BYTE (PC_REGNUM)],
175 &mips_greg_packet[MIPS_R_PC], MIPS_GREG_SIZE);
177 net_write_registers (mips_greg_packet, MIPS_GREG_PLEN, PTRACE_SETREGS);
179 /* Store floating point registers if the target has them. */
183 /* Copy the floating point data registers. */
185 bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)],
186 &mips_fpreg_packet[MIPS_R_FP0],
187 REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
189 /* Copy the floating point control/status register (fpcsr). */
191 bcopy (®isters[REGISTER_BYTE (FCRCS_REGNUM)],
192 &mips_fpreg_packet[MIPS_R_FPCSR],
193 REGISTER_RAW_SIZE (FCRCS_REGNUM));
195 net_write_registers (mips_fpreg_packet, MIPS_FPREG_PLEN,