1 /*
2 * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #ifndef HEXAGON_CPU_BITS_H
19 #define HEXAGON_CPU_BITS_H
20
21 #include "qemu/bitops.h"
22
23 #define PCALIGN 4
24 #define PCALIGN_MASK (PCALIGN - 1)
25
26 enum hex_event {
27 HEX_EVENT_NONE = -1,
28 HEX_EVENT_TRAP0 = 0x008,
29 };
30
31 enum hex_cause {
32 HEX_CAUSE_NONE = -1,
33 HEX_CAUSE_TRAP0 = 0x172,
34 HEX_CAUSE_FETCH_NO_UPAGE = 0x012,
35 HEX_CAUSE_INVALID_PACKET = 0x015,
36 HEX_CAUSE_INVALID_OPCODE = 0x015,
37 HEX_CAUSE_PC_NOT_ALIGNED = 0x01e,
38 HEX_CAUSE_PRIV_NO_UREAD = 0x024,
39 HEX_CAUSE_PRIV_NO_UWRITE = 0x025,
40 };
41
42 #define PACKET_WORDS_MAX 4
43
parse_bits(uint32_t encoding)44 static inline uint32_t parse_bits(uint32_t encoding)
45 {
46 /* The parse bits are [15:14] */
47 return extract32(encoding, 14, 2);
48 }
49
iclass_bits(uint32_t encoding)50 static inline uint32_t iclass_bits(uint32_t encoding)
51 {
52 /* The instruction class is encoded in bits [31:28] */
53 uint32_t iclass = extract32(encoding, 28, 4);
54 /* If parse bits are zero, this is a duplex */
55 if (parse_bits(encoding) == 0) {
56 iclass += 16;
57 }
58 return iclass;
59 }
60
is_packet_end(uint32_t endocing)61 static inline bool is_packet_end(uint32_t endocing)
62 {
63 uint32_t bits = parse_bits(endocing);
64 return ((bits == 0x3) || (bits == 0x0));
65 }
66
67 int disassemble_hexagon(uint32_t *words, int nwords, bfd_vma pc, GString *buf);
68
69 #endif
70