1/* 68k-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., 59 Temple Place - Suite 330,
21   Boston, MA 02111-1307, USA.  */
22
23#include <stdio.h>
24#include "defs.h"
25
26#include "vx-share/regPacket.h"
27#include "frame.h"
28#include "inferior.h"
29#include "target.h"
30#include "gdbcore.h"
31#include "command.h"
32#include "symtab.h"
33#include "symfile.h"
34#include "regcache.h"
35
36#include "gdb_string.h"
37#include <errno.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
49#ifdef _AIX
50#undef malloc
51#endif
52
53#include <sys/time.h>		/* UTek's <rpc/rpc.h> doesn't #incl this */
54#include <netdb.h>
55#include "vx-share/ptrace.h"
56#include "vx-share/xdr_ptrace.h"
57#include "vx-share/xdr_ld.h"
58#include "vx-share/xdr_rdb.h"
59#include "vx-share/dbgRpcLib.h"
60
61/* get rid of value.h if possible */
62#include <value.h>
63#include <symtab.h>
64
65/* Flag set if target has fpu */
66
67extern int target_has_fp;
68
69/* Generic register read/write routines in remote-vx.c.  */
70
71extern void net_read_registers ();
72extern void net_write_registers ();
73
74/* Read a register or registers from the VxWorks target.
75   REGNO is the register to read, or -1 for all; currently,
76   it is ignored.  FIXME look at regno to improve efficiency.  */
77
78void
79vx_read_register (int regno)
80{
81  char mc68k_greg_packet[MC68K_GREG_PLEN];
82  char mc68k_fpreg_packet[MC68K_FPREG_PLEN];
83
84  /* Get general-purpose registers.  */
85
86  net_read_registers (mc68k_greg_packet, MC68K_GREG_PLEN, PTRACE_GETREGS);
87
88  bcopy (&mc68k_greg_packet[MC68K_R_D0], deprecated_registers,
89	 16 * MC68K_GREG_SIZE);
90  bcopy (&mc68k_greg_packet[MC68K_R_SR],
91	 &deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)],
92	 MC68K_GREG_SIZE);
93  bcopy (&mc68k_greg_packet[MC68K_R_PC],
94	 &deprecated_registers[DEPRECATED_REGISTER_BYTE (PC_REGNUM)],
95	 MC68K_GREG_SIZE);
96
97  /* Get floating-point registers, if the target system has them.
98     Otherwise, zero them.  */
99
100  if (target_has_fp)
101    {
102      net_read_registers (mc68k_fpreg_packet, MC68K_FPREG_PLEN,
103			  PTRACE_GETFPREGS);
104
105      bcopy (&mc68k_fpreg_packet[MC68K_R_FP0],
106	     &deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)],
107	     MC68K_FPREG_SIZE * 8);
108      bcopy (&mc68k_fpreg_packet[MC68K_R_FPCR],
109	     &deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)],
110	     MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8));
111    }
112  else
113    {
114      memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)],
115	      0, MC68K_FPREG_SIZE * 8);
116      memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)],
117	      0, MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8));
118    }
119
120  /* Mark the register cache valid.  */
121
122  deprecated_registers_fetched ();
123}
124
125/* Store a register or registers into the VxWorks target.
126   REGNO is the register to store, or -1 for all; currently,
127   it is ignored.  FIXME look at regno to improve efficiency.  */
128
129void
130vx_write_register (int regno)
131{
132  char mc68k_greg_packet[MC68K_GREG_PLEN];
133  char mc68k_fpreg_packet[MC68K_FPREG_PLEN];
134
135  /* Store general-purpose registers.  */
136
137  bcopy (deprecated_registers, &mc68k_greg_packet[MC68K_R_D0],
138	 16 * MC68K_GREG_SIZE);
139  bcopy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)],
140	 &mc68k_greg_packet[MC68K_R_SR], MC68K_GREG_SIZE);
141  bcopy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (PC_REGNUM)],
142	 &mc68k_greg_packet[MC68K_R_PC], MC68K_GREG_SIZE);
143
144  net_write_registers (mc68k_greg_packet, MC68K_GREG_PLEN, PTRACE_SETREGS);
145
146  /* Store floating point registers if the target has them.  */
147
148  if (target_has_fp)
149    {
150      bcopy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)],
151	     &mc68k_fpreg_packet[MC68K_R_FP0],
152	     MC68K_FPREG_SIZE * 8);
153      bcopy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)],
154	     &mc68k_fpreg_packet[MC68K_R_FPCR],
155	     MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8));
156
157      net_write_registers (mc68k_fpreg_packet, MC68K_FPREG_PLEN,
158			   PTRACE_SETFPREGS);
159    }
160}
161