source: rtems/c/src/librpc/include/rpc/xdr.h @ 48bfd992

4.104.114.84.95
Last change on this file since 48bfd992 was 4721cf1, checked in by Joel Sherrill <joel.sherrill@…>, on Dec 3, 1998 at 11:54:14 PM

Patch from Emmanuel Raguet <raguet@…> to add remote debug server
and RPC support to RTEMS. Thanks. :) Email follows:

Hello,

For Xmas, here is the Remote Debugger on RTEMS !

Here are 2 patches for the Remote Debugger on RTEMS for pc386 from Linux
host :

  • one for RTEMS it self,
  • one for GDB-4.17.

1/ RTEMS patch
--------------

This patch adds 2 libraries :

  • a simplified SUN RPC library
  • the Remote Debugger library

The configuration command is the following :
../rtems4/configure --target=i386-rtemself --enable-rtemsbsp=pc386
--enable-rdbg

The SUN RPC library is built only if networking is set.
The RDBG library is built if networking and enable-rdbg are set.

The function used to initialize the debugger is :

rtems_rdbg_initialize ();

A special function has been created to force a task to be
in a "debug" state : enterRdbg().
The use of this function is not mandatory.

2/ GDB-4.17 patch
-----------------

This patch create a new RTEMS target for GDB-4.17.

The configuration command is the following :
./configure --enable-shared --target=i386RTEMS

To connect to a target, use :

target rtems [your_site_address]

Then, attach the target using : attach 1

And... Debug ;)

You can obtain the original GDB-4.17 on
ftp://ftp.debian.org/debian/dists/stable/main/source/devel/gdb_4.17.orig.tar.gz

This has been tested from a Debian 2.0.1 linux host.

  • Property mode set to 100644
File size: 9.3 KB
Line 
1#ifndef RPC_XDR_H
2#define RPC_XDR_H
3
4/* @(#)xdr.h    2.2 88/07/29 4.0 RPCSRC */
5/*
6 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
7 * unrestricted use provided that this legend is included on all tape
8 * media and as a part of the software program in whole or part.  Users
9 * may copy or modify Sun RPC without charge, but are not authorized
10 * to license or distribute it to anyone else except as part of a product or
11 * program developed by the user.
12 *
13 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
14 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
15 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
16 *
17 * Sun RPC is provided with no support and without any obligation on the
18 * part of Sun Microsystems, Inc. to assist in its use, correction,
19 * modification or enhancement.
20 *
21 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
22 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
23 * OR ANY PART THEREOF.
24 *
25 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
26 * or profits or other special, indirect and consequential damages, even if
27 * Sun has been advised of the possibility of such damages.
28 *
29 * Sun Microsystems, Inc.
30 * 2550 Garcia Avenue
31 * Mountain View, California  94043
32 */
33/*      @(#)xdr.h 1.19 87/04/22 SMI      */
34
35/*
36 * xdr.h, External Data Representation Serialization Routines.
37 *
38 * Copyright (C) 1984, Sun Microsystems, Inc.
39 */
40
41#ifndef __XDR_HEADER__
42#define __XDR_HEADER__
43
44/*
45 * XDR provides a conventional way for converting between C data
46 * types and an external bit-string representation.  Library supplied
47 * routines provide for the conversion on built-in C data types.  These
48 * routines and utility routines defined here are used to help implement
49 * a type encode/decode routine for each user-defined type.
50 *
51 * Each data type provides a single procedure which takes two arguments:
52 *
53 *      bool_t
54 *      xdrproc(xdrs, argresp)
55 *              XDR *xdrs;
56 *              <type> *argresp;
57 *
58 * xdrs is an instance of a XDR handle, to which or from which the data
59 * type is to be converted.  argresp is a pointer to the structure to be
60 * converted.  The XDR handle contains an operation field which indicates
61 * which of the operations (ENCODE, DECODE * or FREE) is to be performed.
62 *
63 * XDR_DECODE may allocate space if the pointer argresp is null.  This
64 * data can be freed with the XDR_FREE operation.
65 *
66 * We write only one procedure per data type to make it easy
67 * to keep the encode and decode procedures for a data type consistent.
68 * In many cases the same code performs all operations on a user defined type,
69 * because all the hard work is done in the component type routines.
70 * decode as a series of calls on the nested data types.
71 */
72
73/*
74 * Xdr operations.  XDR_ENCODE causes the type to be encoded into the
75 * stream.  XDR_DECODE causes the type to be extracted from the stream.
76 * XDR_FREE can be used to release the space allocated by an XDR_DECODE
77 * request.
78 */
79enum xdr_op {
80        XDR_ENCODE=0,
81        XDR_DECODE=1,
82        XDR_FREE=2
83};
84
85/*
86 * This is the number of bytes per unit of external data.
87 */
88#define BYTES_PER_XDR_UNIT      (4)
89#define RNDUP(x)  ((((x) + BYTES_PER_XDR_UNIT - 1) / BYTES_PER_XDR_UNIT) \
90                    * BYTES_PER_XDR_UNIT)
91
92/*
93 * A xdrproc_t exists for each data type which is to be encoded or decoded.
94 *
95 * The second argument to the xdrproc_t is a pointer to an opaque pointer.
96 * The opaque pointer generally points to a structure of the data type
97 * to be decoded.  If this pointer is 0, then the type routines should
98 * allocate dynamic storage of the appropriate size and return it.
99 * bool_t       (*xdrproc_t)(XDR *, caddr_t *);
100 */
101typedef bool_t (*xdrproc_t)();
102
103/*
104 * The XDR handle.
105 * Contains operation which is being applied to the stream,
106 * an operations vector for the paticular implementation (e.g. see xdr_mem.c),
107 * and two private fields for the use of the particular impelementation.
108 */
109typedef struct {
110        enum xdr_op     x_op;           /* operation; fast additional param */
111        struct xdr_ops {
112                bool_t  (*x_getlong)(); /* get a long from underlying stream */
113                bool_t  (*x_putlong)(); /* put a long to " */
114                bool_t  (*x_getbytes)();/* get some bytes from " */
115                bool_t  (*x_putbytes)();/* put some bytes to " */
116                u_int   (*x_getpostn)();/* returns bytes off from beginning */
117                bool_t  (*x_setpostn)();/* lets you reposition the stream */
118                long *  (*x_inline)();  /* buf quick ptr to buffered data */
119                void    (*x_destroy)(); /* free privates of this xdr_stream */
120        } *x_ops;
121        caddr_t         x_public;       /* users' data */
122        caddr_t         x_private;      /* pointer to private data */
123        caddr_t         x_base;         /* private used for position info */
124        int             x_handy;        /* extra private word */
125} XDR;
126
127/*
128 * Operations defined on a XDR handle
129 *
130 * XDR          *xdrs;
131 * long         *longp;
132 * caddr_t       addr;
133 * u_int         len;
134 * u_int         pos;
135 */
136#define XDR_GETLONG(xdrs, longp)                        \
137        (*(xdrs)->x_ops->x_getlong)(xdrs, longp)
138#define xdr_getlong(xdrs, longp)                        \
139        (*(xdrs)->x_ops->x_getlong)(xdrs, longp)
140
141#define XDR_PUTLONG(xdrs, longp)                        \
142        (*(xdrs)->x_ops->x_putlong)(xdrs, longp)
143#define xdr_putlong(xdrs, longp)                        \
144        (*(xdrs)->x_ops->x_putlong)(xdrs, longp)
145
146#define XDR_GETBYTES(xdrs, addr, len)                   \
147        (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len)
148#define xdr_getbytes(xdrs, addr, len)                   \
149        (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len)
150
151#define XDR_PUTBYTES(xdrs, addr, len)                   \
152        (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len)
153#define xdr_putbytes(xdrs, addr, len)                   \
154        (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len)
155
156#define XDR_GETPOS(xdrs)                                \
157        (*(xdrs)->x_ops->x_getpostn)(xdrs)
158#define xdr_getpos(xdrs)                                \
159        (*(xdrs)->x_ops->x_getpostn)(xdrs)
160
161#define XDR_SETPOS(xdrs, pos)                           \
162        (*(xdrs)->x_ops->x_setpostn)(xdrs, pos)
163#define xdr_setpos(xdrs, pos)                           \
164        (*(xdrs)->x_ops->x_setpostn)(xdrs, pos)
165
166#define XDR_INLINE(xdrs, len)                           \
167        (*(xdrs)->x_ops->x_inline)(xdrs, len)
168#define xdr_inline(xdrs, len)                           \
169        (*(xdrs)->x_ops->x_inline)(xdrs, len)
170
171#define XDR_DESTROY(xdrs)                               \
172        if ((xdrs)->x_ops->x_destroy)                   \
173                (*(xdrs)->x_ops->x_destroy)(xdrs)
174#define xdr_destroy(xdrs)                               \
175        if ((xdrs)->x_ops->x_destroy)                   \
176                (*(xdrs)->x_ops->x_destroy)(xdrs)
177
178/*
179 * Support struct for discriminated unions.
180 * You create an array of xdrdiscrim structures, terminated with
181 * a entry with a null procedure pointer.  The xdr_union routine gets
182 * the discriminant value and then searches the array of structures
183 * for a matching value.  If a match is found the associated xdr routine
184 * is called to handle that part of the union.  If there is
185 * no match, then a default routine may be called.
186 * If there is no match and no default routine it is an error.
187 */
188#define NULL_xdrproc_t ((xdrproc_t)0)
189struct xdr_discrim {
190        int     value;
191        xdrproc_t proc;
192};
193
194/*
195 * In-line routines for fast encode/decode of primitve data types.
196 * Caveat emptor: these use single memory cycles to get the
197 * data from the underlying buffer, and will fail to operate
198 * properly if the data is not aligned.  The standard way to use these
199 * is to say:
200 *      if ((buf = XDR_INLINE(xdrs, count)) == NULL)
201 *              return (FALSE);
202 *      <<< macro calls >>>
203 * where ``count'' is the number of bytes of data occupied
204 * by the primitive data types.
205 *
206 * N.B. and frozen for all time: each data type here uses 4 bytes
207 * of external representation.
208 */
209#define IXDR_GET_LONG(buf)              ((long)ntohl((u_long)*(buf)++))
210#define IXDR_PUT_LONG(buf, v)           (*(buf)++ = (long)htonl((u_long)v))
211
212#define IXDR_GET_BOOL(buf)              ((bool_t)IXDR_GET_LONG(buf))
213#define IXDR_GET_ENUM(buf, t)           ((t)IXDR_GET_LONG(buf))
214#define IXDR_GET_U_LONG(buf)            ((u_long)IXDR_GET_LONG(buf))
215#define IXDR_GET_SHORT(buf)             ((short)IXDR_GET_LONG(buf))
216#define IXDR_GET_U_SHORT(buf)           ((u_short)IXDR_GET_LONG(buf))
217
218#define IXDR_PUT_BOOL(buf, v)           IXDR_PUT_LONG((buf), ((long)(v)))
219#define IXDR_PUT_ENUM(buf, v)           IXDR_PUT_LONG((buf), ((long)(v)))
220#define IXDR_PUT_U_LONG(buf, v)         IXDR_PUT_LONG((buf), ((long)(v)))
221#define IXDR_PUT_SHORT(buf, v)          IXDR_PUT_LONG((buf), ((long)(v)))
222#define IXDR_PUT_U_SHORT(buf, v)        IXDR_PUT_LONG((buf), ((long)(v)))
223
224/*
225 * These are the "generic" xdr routines.
226 */
227extern bool_t   xdr_void();
228extern bool_t   xdr_int();
229extern bool_t   xdr_u_int();
230extern bool_t   xdr_long();
231extern bool_t   xdr_u_long();
232extern bool_t   xdr_short();
233extern bool_t   xdr_u_short();
234extern bool_t   xdr_bool();
235extern bool_t   xdr_enum();
236extern bool_t   xdr_array();
237extern bool_t   xdr_bytes();
238extern bool_t   xdr_opaque();
239extern bool_t   xdr_string();
240extern bool_t   xdr_union();
241extern bool_t   xdr_char();
242extern bool_t   xdr_u_char();
243extern bool_t   xdr_vector();
244extern bool_t   xdr_float();
245extern bool_t   xdr_double();
246extern bool_t   xdr_reference();
247extern bool_t   xdr_pointer();
248extern bool_t   xdr_wrapstring();
249
250/*
251 * Common opaque bytes objects used by many rpc protocols;
252 * declared here due to commonality.
253 */
254#define MAX_NETOBJ_SZ 1024
255struct netobj {
256        u_int   n_len;
257        char    *n_bytes;
258};
259typedef struct netobj netobj;
260extern bool_t   xdr_netobj();
261
262/*
263 * These are the public routines for the various implementations of
264 * xdr streams.
265 */
266extern void   xdrmem_create();          /* XDR using memory buffers */
267extern void   xdrstdio_create();        /* XDR using stdio library */
268extern void   xdrrec_create();          /* XDR pseudo records for tcp */
269extern bool_t xdrrec_endofrecord();     /* make end of xdr record */
270extern bool_t xdrrec_skiprecord();      /* move to beginning of next record */
271extern bool_t xdrrec_eof();             /* true if no more input */
272
273#endif /* !__XDR_HEADER__ */
274
275#endif /* RPC_XDR_H */
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