xref: /freebsd/sys/arm/arm/db_disasm.c (revision 22cf89c938886d14f5796fc49f9f020c23ea8eaf)
1 /*	$NetBSD: db_disasm.c,v 1.4 2003/07/15 00:24:38 lukem Exp $	*/
2 
3 /*-
4  * SPDX-License-Identifier: BSD-4-Clause
5  *
6  * Copyright (c) 1996 Mark Brinicombe.
7  * Copyright (c) 1996 Brini.
8  *
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. All advertising materials mentioning features or use of this software
20  *    must display the following acknowledgement:
21  *	This product includes software developed by Brini.
22  * 4. The name of the company nor the name of the author may be used to
23  *    endorse or promote products derived from this software without specific
24  *    prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
27  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
28  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
29  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
30  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
31  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
32  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  */
38 
39 #include <sys/cdefs.h>
40 #include <sys/param.h>
41 #include <machine/db_machdep.h>
42 #include <ddb/ddb.h>
43 #include <ddb/db_access.h>
44 #include <ddb/db_sym.h>
45 
46 #include <machine/disassem.h>
47 
48 /* Glue code to interface db_disasm to the generic ARM disassembler */
49 
50 static u_int db_disasm_read_word(u_int);
51 static void db_disasm_printaddr(u_int);
52 
53 static const disasm_interface_t db_disasm_interface = {
54 	db_disasm_read_word,
55 	db_disasm_printaddr,
56        	db_printf
57 };
58 
59 static u_int
60 db_disasm_read_word(u_int address)
61 {
62 
63 	return db_get_value(address, 4, 0);
64 }
65 
66 static void
67 db_disasm_printaddr(u_int address)
68 {
69 
70 	db_printsym((db_addr_t)address, DB_STGY_ANY);
71 }
72 
73 vm_offset_t
74 db_disasm(vm_offset_t loc, bool altfmt)
75 {
76 
77 	return disasm(&db_disasm_interface, loc, altfmt);
78 }
79 
80 /* End of db_disasm.c */
81