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 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 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 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