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 * HVX instructions have the following form 44 * EXTINSN(V6_vinsertwr, "Vx32.w=vinsert(Rt32)", 45 * ATTRIBS(A_EXTENSION,A_CVI,A_CVI_VX,A_CVI_LATE), 46 * "Insert Word Scalar into Vector", 47 * VxV.uw[0] = RtV;) 48 */ 49 const char * const opcode_syntax[XX_LAST_OPCODE] = { 50 #define Q6INSN(TAG, BEH, ATTRIBS, DESCR, SEM) \ 51 [TAG] = BEH, 52 #define EXTINSN(TAG, BEH, ATTRIBS, DESCR, SEM) \ 53 [TAG] = BEH, 54 #include "imported/allidefs.def" 55 #undef Q6INSN 56 #undef EXTINSN 57 }; 58 59 const OpcodeEncoding opcode_encodings[] = { 60 #define DEF_ENC32(TAG, ENCSTR) \ 61 [TAG] = { .encoding = ENCSTR }, 62 #define DEF_ENC_SUBINSN(TAG, CLASS, ENCSTR) \ 63 [TAG] = { .encoding = ENCSTR, .enc_class = CLASS }, 64 #define DEF_EXT_ENC(TAG, CLASS, ENCSTR) \ 65 [TAG] = { .encoding = ENCSTR, .enc_class = CLASS }, 66 #include "imported/encode.def" 67 #undef DEF_ENC32 68 #undef DEF_ENC_SUBINSN 69 #undef DEF_EXT_ENC 70 }; 71 72 static const char * const opcode_enc_class_names[XX_LAST_ENC_CLASS] = { 73 "NORMAL", 74 "16BIT", 75 "SUBINSN_A", 76 "SUBINSN_L1", 77 "SUBINSN_L2", 78 "SUBINSN_S1", 79 "SUBINSN_S2", 80 "EXT_noext", 81 "EXT_mmvec", 82 }; 83 84 static const char *get_opcode_enc(int opcode) 85 { 86 const char *tmp = opcode_encodings[opcode].encoding; 87 if (tmp == NULL) { 88 tmp = "MISSING ENCODING"; 89 } 90 return tmp; 91 } 92 93 static const char *get_opcode_enc_class(int opcode) 94 { 95 const char *tmp = opcode_encodings[opcode].encoding; 96 if (tmp == NULL) { 97 const char *test = "V6_"; /* HVX */ 98 const char *name = opcode_names[opcode]; 99 if (strncmp(name, test, strlen(test)) == 0) { 100 return "EXT_mmvec"; 101 } 102 } 103 return opcode_enc_class_names[opcode_encodings[opcode].enc_class]; 104 } 105 106 static void gen_iset_table(FILE *out) 107 { 108 int i; 109 110 fprintf(out, "iset = {\n"); 111 for (i = 0; i < XX_LAST_OPCODE; i++) { 112 fprintf(out, "\t\'%s\' : {\n", opcode_names[i]); 113 fprintf(out, "\t\t\'tag\' : \'%s\',\n", opcode_names[i]); 114 fprintf(out, "\t\t\'syntax\' : \'%s\',\n", opcode_syntax[i]); 115 fprintf(out, "\t\t\'enc\' : \'%s\',\n", get_opcode_enc(i)); 116 fprintf(out, "\t\t\'enc_class\' : \'%s\',\n", get_opcode_enc_class(i)); 117 fprintf(out, "\t},\n"); 118 } 119 fprintf(out, "};\n\n"); 120 } 121 122 static void gen_tags_list(FILE *out) 123 { 124 int i; 125 126 fprintf(out, "tags = [\n"); 127 for (i = 0; i < XX_LAST_OPCODE; i++) { 128 fprintf(out, "\t\'%s\',\n", opcode_names[i]); 129 } 130 fprintf(out, "];\n\n"); 131 } 132 133 int main(int argc, char *argv[]) 134 { 135 FILE *outfile; 136 137 if (argc != 2) { 138 fprintf(stderr, "Usage: gen_dectree_import ouptputfile\n"); 139 return 1; 140 } 141 outfile = fopen(argv[1], "w"); 142 if (outfile == NULL) { 143 fprintf(stderr, "Cannot open %s for writing\n", argv[1]); 144 return 1; 145 } 146 147 gen_iset_table(outfile); 148 gen_tags_list(outfile); 149 150 fclose(outfile); 151 return 0; 152 } 153