1 /*-
2 * Copyright (c) 2015 The FreeBSD Foundation
3 *
4 * This software was developed by Semihalf under
5 * the sponsorship of the FreeBSD Foundation.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <ddb/ddb.h>
31 #include <ddb/db_access.h>
32 #include <ddb/db_sym.h>
33
34 #include <machine/disassem.h>
35
36 static u_int db_disasm_read_word(vm_offset_t);
37 static void db_disasm_printaddr(vm_offset_t);
38
39 /* Glue code to interface db_disasm to the generic ARM disassembler */
40 static const struct disasm_interface db_disasm_interface = {
41 .di_readword = db_disasm_read_word,
42 .di_printaddr = db_disasm_printaddr,
43 .di_printf = db_printf,
44 };
45
46 static u_int
db_disasm_read_word(vm_offset_t address)47 db_disasm_read_word(vm_offset_t address)
48 {
49
50 return (db_get_value(address, INSN_SIZE, 0));
51 }
52
53 static void
db_disasm_printaddr(vm_offset_t address)54 db_disasm_printaddr(vm_offset_t address)
55 {
56
57 db_printsym((db_addr_t)address, DB_STGY_ANY);
58 }
59
60 vm_offset_t
db_disasm(vm_offset_t loc,bool altfmt)61 db_disasm(vm_offset_t loc, bool altfmt)
62 {
63
64 return (disasm(&db_disasm_interface, loc, altfmt));
65 }
66
67 /* End of db_disasm.c */
68