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  memcpy (deprecated_registers,
89	  &mc68k_greg_packet[MC68K_R_D0]
90	  16 * MC68K_GREG_SIZE);
91  memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)],
92	  &mc68k_greg_packet[MC68K_R_SR],
93	  MC68K_GREG_SIZE);
94  memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (PC_REGNUM)],
95	  &mc68k_greg_packet[MC68K_R_PC],
96	  MC68K_GREG_SIZE);
97
98  /* Get floating-point registers, if the target system has them.
99     Otherwise, zero them.  */
100
101  if (target_has_fp)
102    {
103      net_read_registers (mc68k_fpreg_packet, MC68K_FPREG_PLEN,
104			  PTRACE_GETFPREGS);
105
106      memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)],
107	      &mc68k_fpreg_packet[MC68K_R_FP0],
108	      MC68K_FPREG_SIZE * 8);
109      memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)],
110	      &mc68k_fpreg_packet[MC68K_R_FPCR],
111	      MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8));
112    }
113  else
114    {
115      memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)],
116	      0, MC68K_FPREG_SIZE * 8);
117      memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)],
118	      0, MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8));
119    }
120
121  /* Mark the register cache valid.  */
122
123  deprecated_registers_fetched ();
124}
125
126/* Store a register or registers into the VxWorks target.
127   REGNO is the register to store, or -1 for all; currently,
128   it is ignored.  FIXME look at regno to improve efficiency.  */
129
130void
131vx_write_register (int regno)
132{
133  char mc68k_greg_packet[MC68K_GREG_PLEN];
134  char mc68k_fpreg_packet[MC68K_FPREG_PLEN];
135
136  /* Store general-purpose registers.  */
137
138  memcpy (&mc68k_greg_packet[MC68K_R_D0], deprecated_registers,
139	  16 * MC68K_GREG_SIZE);
140  memcpy (&mc68k_greg_packet[MC68K_R_SR],
141	  &deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)],
142	  MC68K_GREG_SIZE);
143  memcpy (&mc68k_greg_packet[MC68K_R_PC],
144	  &deprecated_registers[DEPRECATED_REGISTER_BYTE (PC_REGNUM)],
145	  MC68K_GREG_SIZE);
146
147  net_write_registers (mc68k_greg_packet, MC68K_GREG_PLEN, PTRACE_SETREGS);
148
149  /* Store floating point registers if the target has them.  */
150
151  if (target_has_fp)
152    {
153      memcpy (&mc68k_fpreg_packet[MC68K_R_FP0],
154	      &deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)],
155	      MC68K_FPREG_SIZE * 8);
156      memcpy (&mc68k_fpreg_packet[MC68K_R_FPCR],
157	      &deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)],
158	      MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8));
159
160      net_write_registers (mc68k_fpreg_packet, MC68K_FPREG_PLEN,
161			   PTRACE_SETFPREGS);
162    }
163}
164