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 * This program generates the encodings file that is processed by 20 * the dectree.py script to produce the decoding tree. We use the C 21 * preprocessor to manipulate the files imported from the Hexagon 22 * architecture library. 23 */ 24 #include <stdio.h> 25 #include <string.h> 26 #include "opcodes.h" 27 28 #define STRINGIZE(X) #X 29 30 const char * const opcode_names[] = { 31 #define OPCODE(IID) STRINGIZE(IID) 32 #include "opcodes_def_generated.h.inc" 33 NULL 34 #undef OPCODE 35 }; 36 37 /* 38 * Process the instruction definitions 39 * Scalar core instructions have the following form 40 * Q6INSN(A2_add,"Rd32=add(Rs32,Rt32)",ATTRIBS(), 41 * "Add 32-bit registers", 42 * { RdV=RsV+RtV;}) 43 */ 44 const char * const opcode_syntax[XX_LAST_OPCODE] = { 45 #define Q6INSN(TAG, BEH, ATTRIBS, DESCR, SEM) \ 46 [TAG] = BEH, 47 #define EXTINSN(TAG, BEH, ATTRIBS, DESCR, SEM) \ 48 [TAG] = BEH, 49 #include "imported/allidefs.def" 50 #undef Q6INSN 51 #undef EXTINSN 52 }; 53 54 const char * const opcode_rregs[] = { 55 #define REGINFO(TAG, REGINFO, RREGS, WREGS) RREGS, 56 #define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2) /* nothing */ 57 #include "op_regs_generated.h.inc" 58 NULL 59 #undef REGINFO 60 #undef IMMINFO 61 }; 62 63 const char * const opcode_wregs[] = { 64 #define REGINFO(TAG, REGINFO, RREGS, WREGS) WREGS, 65 #define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2) /* nothing */ 66 #include "op_regs_generated.h.inc" 67 NULL 68 #undef REGINFO 69 #undef IMMINFO 70 }; 71 72 const OpcodeEncoding opcode_encodings[] = { 73 #define DEF_ENC32(TAG, ENCSTR) \ 74 [TAG] = { .encoding = ENCSTR }, 75 #define DEF_ENC_SUBINSN(TAG, CLASS, ENCSTR) \ 76 [TAG] = { .encoding = ENCSTR, .enc_class = CLASS }, 77 #define DEF_EXT_ENC(TAG, CLASS, ENCSTR) \ 78 [TAG] = { .encoding = ENCSTR, .enc_class = CLASS }, 79 #include "imported/encode.def" 80 #undef DEF_ENC32 81 #undef DEF_ENC_SUBINSN 82 #undef DEF_EXT_ENC 83 }; 84 85 static const char * const opcode_enc_class_names[XX_LAST_ENC_CLASS] = { 86 "NORMAL", 87 "16BIT", 88 "SUBINSN_A", 89 "SUBINSN_L1", 90 "SUBINSN_L2", 91 "SUBINSN_S1", 92 "SUBINSN_S2", 93 "EXT_noext", 94 "EXT_mmvec", 95 }; 96 97 static const char *get_opcode_enc(int opcode) 98 { 99 const char *tmp = opcode_encodings[opcode].encoding; 100 if (tmp == NULL) { 101 tmp = "MISSING ENCODING"; 102 } 103 return tmp; 104 } 105 106 static const char *get_opcode_enc_class(int opcode) 107 { 108 return opcode_enc_class_names[opcode_encodings[opcode].enc_class]; 109 } 110 111 static void gen_iset_table(FILE *out) 112 { 113 int i; 114 115 fprintf(out, "iset = {\n"); 116 for (i = 0; i < XX_LAST_OPCODE; i++) { 117 fprintf(out, "\t\'%s\' : {\n", opcode_names[i]); 118 fprintf(out, "\t\t\'tag\' : \'%s\',\n", opcode_names[i]); 119 fprintf(out, "\t\t\'syntax\' : \'%s\',\n", opcode_syntax[i]); 120 fprintf(out, "\t\t\'rregs\' : \'%s\',\n", opcode_rregs[i]); 121 fprintf(out, "\t\t\'wregs\' : \'%s\',\n", opcode_wregs[i]); 122 fprintf(out, "\t\t\'enc\' : \'%s\',\n", get_opcode_enc(i)); 123 fprintf(out, "\t\t\'enc_class\' : \'%s\',\n", get_opcode_enc_class(i)); 124 fprintf(out, "\t},\n"); 125 } 126 fprintf(out, "};\n\n"); 127 } 128 129 static void gen_tags_list(FILE *out) 130 { 131 int i; 132 133 fprintf(out, "tags = [\n"); 134 for (i = 0; i < XX_LAST_OPCODE; i++) { 135 fprintf(out, "\t\'%s\',\n", opcode_names[i]); 136 } 137 fprintf(out, "];\n\n"); 138 } 139 140 static void gen_enc_ext_spaces_table(FILE *out) 141 { 142 fprintf(out, "enc_ext_spaces = {\n"); 143 #define DEF_EXT_SPACE(SPACEID, ENCSTR) \ 144 fprintf(out, "\t\'%s\' : \'%s\',\n", #SPACEID, ENCSTR); 145 #include "imported/encode.def" 146 #undef DEF_EXT_SPACE 147 fprintf(out, "};\n\n"); 148 } 149 150 static void gen_subinsn_groupings_table(FILE *out) 151 { 152 fprintf(out, "subinsn_groupings = {\n"); 153 #define DEF_PACKED32(TAG, TYPEA, TYPEB, ENCSTR) \ 154 do { \ 155 fprintf(out, "\t\'%s\' : {\n", #TAG); \ 156 fprintf(out, "\t\t\'name\' : \'%s\',\n", #TAG); \ 157 fprintf(out, "\t\t\'class_a\' : \'%s\',\n", #TYPEA); \ 158 fprintf(out, "\t\t\'class_b\' : \'%s\',\n", #TYPEB); \ 159 fprintf(out, "\t\t\'enc\' : \'%s\',\n", ENCSTR); \ 160 fprintf(out, "\t},\n"); \ 161 } while (0); 162 #include "imported/encode.def" 163 #undef DEF_PACKED32 164 fprintf(out, "};\n\n"); 165 } 166 167 int main(int argc, char *argv[]) 168 { 169 FILE *outfile; 170 171 if (argc != 2) { 172 fprintf(stderr, "Usage: gen_dectree_import ouptputfile\n"); 173 return 1; 174 } 175 outfile = fopen(argv[1], "w"); 176 if (outfile == NULL) { 177 fprintf(stderr, "Cannot open %s for writing\n", argv[1]); 178 return 1; 179 } 180 181 gen_iset_table(outfile); 182 gen_tags_list(outfile); 183 gen_enc_ext_spaces_table(outfile); 184 gen_subinsn_groupings_table(outfile); 185 186 fclose(outfile); 187 return 0; 188 } 189