xref: /freebsd/sys/arm/arm/db_disasm.c (revision 2be1a816b9ff69588e55be0a84cbe2a31efc0f2f)
1 /*	$NetBSD: db_disasm.c,v 1.4 2003/07/15 00:24:38 lukem Exp $	*/
2 
3 /*-
4  * Copyright (c) 1996 Mark Brinicombe.
5  * Copyright (c) 1996 Brini.
6  *
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. All advertising materials mentioning features or use of this software
18  *    must display the following acknowledgement:
19  *	This product includes software developed by Brini.
20  * 4. The name of the company nor the name of the author may be used to
21  *    endorse or promote products derived from this software without specific
22  *    prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
25  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
28  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  */
36 
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
39 #include <sys/param.h>
40 #include <machine/db_machdep.h>
41 #include <ddb/ddb.h>
42 #include <ddb/db_access.h>
43 #include <ddb/db_sym.h>
44 
45 #include <machine/disassem.h>
46 
47 /* Glue code to interface db_disasm to the generic ARM disassembler */
48 
49 static u_int db_disasm_read_word(u_int);
50 static void db_disasm_printaddr(u_int);
51 
52 static const disasm_interface_t db_disasm_interface = {
53 	db_disasm_read_word,
54 	db_disasm_printaddr,
55        	db_printf
56 };
57 
58 static u_int
59 db_disasm_read_word(u_int address)
60 {
61 
62 	return db_get_value(address, 4, 0);
63 }
64 
65 static void
66 db_disasm_printaddr(u_int address)
67 {
68 
69 	db_printsym((db_addr_t)address, DB_STGY_ANY);
70 }
71 
72 vm_offset_t
73 db_disasm(vm_offset_t loc, boolean_t altfmt)
74 {
75 
76 	return disasm(&db_disasm_interface, loc, altfmt);
77 }
78 
79 /* End of db_disasm.c */
80