opcodes.c (3517B)
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 /* 19 * opcodes.c 20 * 21 * data tables generated automatically 22 * Maybe some functions too 23 */ 24 25 #include "qemu/osdep.h" 26 #include "attribs.h" 27 #include "decode.h" 28 29 #define VEC_DESCR(A, B, C) DESCR(A, B, C) 30 #define DONAME(X) #X 31 32 const char * const opcode_names[] = { 33 #define OPCODE(IID) DONAME(IID) 34 #include "opcodes_def_generated.h.inc" 35 NULL 36 #undef OPCODE 37 }; 38 39 const char * const opcode_reginfo[] = { 40 #define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2) /* nothing */ 41 #define REGINFO(TAG, REGINFO, RREGS, WREGS) REGINFO, 42 #include "op_regs_generated.h.inc" 43 NULL 44 #undef REGINFO 45 #undef IMMINFO 46 }; 47 48 49 const char * const opcode_rregs[] = { 50 #define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2) /* nothing */ 51 #define REGINFO(TAG, REGINFO, RREGS, WREGS) RREGS, 52 #include "op_regs_generated.h.inc" 53 NULL 54 #undef REGINFO 55 #undef IMMINFO 56 }; 57 58 59 const char * const opcode_wregs[] = { 60 #define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2) /* nothing */ 61 #define REGINFO(TAG, REGINFO, RREGS, WREGS) WREGS, 62 #include "op_regs_generated.h.inc" 63 NULL 64 #undef REGINFO 65 #undef IMMINFO 66 }; 67 68 const char * const opcode_short_semantics[] = { 69 #define DEF_SHORTCODE(TAG, SHORTCODE) [TAG] = #SHORTCODE, 70 #include "shortcode_generated.h.inc" 71 #undef DEF_SHORTCODE 72 NULL 73 }; 74 75 DECLARE_BITMAP(opcode_attribs[XX_LAST_OPCODE], A_ZZ_LASTATTRIB); 76 77 static void init_attribs(int tag, ...) 78 { 79 va_list ap; 80 int attr; 81 va_start(ap, tag); 82 while ((attr = va_arg(ap, int)) != 0) { 83 set_bit(attr, opcode_attribs[tag]); 84 } 85 va_end(ap); 86 } 87 88 const OpcodeEncoding opcode_encodings[] = { 89 #define DEF_ENC32(OPCODE, ENCSTR) \ 90 [OPCODE] = { .encoding = ENCSTR }, 91 92 #define DEF_ENC_SUBINSN(OPCODE, CLASS, ENCSTR) \ 93 [OPCODE] = { .encoding = ENCSTR, .enc_class = CLASS }, 94 95 #define DEF_EXT_ENC(OPCODE, CLASS, ENCSTR) \ 96 [OPCODE] = { .encoding = ENCSTR, .enc_class = CLASS }, 97 98 #include "imported/encode.def" 99 100 #undef DEF_ENC32 101 #undef DEF_ENC_SUBINSN 102 #undef DEF_EXT_ENC 103 }; 104 105 void opcode_init(void) 106 { 107 init_attribs(0, 0); 108 109 #define ATTRIBS(...) , ## __VA_ARGS__, 0 110 #define OP_ATTRIB(TAG, ARGS) init_attribs(TAG ARGS); 111 #include "op_attribs_generated.h.inc" 112 #undef OP_ATTRIB 113 #undef ATTRIBS 114 115 decode_init(); 116 } 117 118 119 #define NEEDLE "IMMEXT(" 120 121 int opcode_which_immediate_is_extended(Opcode opcode) 122 { 123 const char *p; 124 125 g_assert(opcode < XX_LAST_OPCODE); 126 g_assert(GET_ATTRIB(opcode, A_EXTENDABLE)); 127 128 p = opcode_short_semantics[opcode]; 129 p = strstr(p, NEEDLE); 130 g_assert(p); 131 p += strlen(NEEDLE); 132 while (isspace(*p)) { 133 p++; 134 } 135 /* lower is always imm 0, upper always imm 1. */ 136 if (islower(*p)) { 137 return 0; 138 } else if (isupper(*p)) { 139 return 1; 140 } else { 141 g_assert_not_reached(); 142 } 143 }