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505bf312 KB |
1 | /*- |
2 | * Copyright (c) 1980 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
c0567266 KB |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
f644bb55 | 32 | */ |
01a616f1 | 33 | |
f644bb55 | 34 | #ifndef lint |
af359dea | 35 | static char sccsid[] = "@(#)rdwr.c 5.4 (Berkeley) 4/16/91"; |
505bf312 | 36 | #endif /* not lint */ |
82d3cd01 | 37 | |
01a616f1 | 38 | /* |
82d3cd01 | 39 | * This routine is used to access the debuggee process from |
01a616f1 ML |
40 | * outside the "process" module. |
41 | * | |
42 | * They invoke "pio" which eventually leads to a call to "ptrace". | |
43 | * The system generates an I/O error when a ptrace fails, we catch | |
44 | * that here and assume its due to a misguided address. | |
45 | */ | |
46 | ||
47 | #include "defs.h" | |
48 | #include <errno.h> | |
49 | #include "process.h" | |
50 | #include "process.rep" | |
51 | ||
82d3cd01 | 52 | # include "pxinfo.h" |
01a616f1 ML |
53 | |
54 | typedef int INTFUNC(); | |
55 | ||
56 | extern INTFUNC *onsyserr(); | |
57 | ||
58 | LOCAL badaddr; | |
82d3cd01 | 59 | LOCAL PIO_OP rwflg; |
01a616f1 ML |
60 | LOCAL rwerr(); |
61 | ||
62 | /* | |
82d3cd01 | 63 | * Read/Write to the process' data area. |
01a616f1 ML |
64 | */ |
65 | ||
82d3cd01 KM |
66 | drdwr(rw, buff, addr, nbytes) |
67 | PIO_OP rw; | |
01a616f1 ML |
68 | char *buff; |
69 | ADDRESS addr; | |
70 | int nbytes; | |
71 | { | |
72 | INTFUNC *f; | |
73 | ||
4fb790e8 | 74 | f = onsyserr(EIO, rwerr); |
01a616f1 | 75 | badaddr = addr; |
82d3cd01 KM |
76 | rwflg = rw; |
77 | pio(process, rw, DATASEG, buff, addr, nbytes); | |
01a616f1 ML |
78 | onsyserr(EIO, f); |
79 | } | |
80 | ||
81 | /* | |
82 | * Error handler. | |
83 | */ | |
84 | ||
85 | LOCAL rwerr() | |
86 | { | |
82d3cd01 KM |
87 | error("bad %s process address 0x%x", |
88 | rwflg == PREAD ? "read" : "write", badaddr); | |
01a616f1 | 89 | } |