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 semantics file that is processed by 20 * the do_qemu.py script. We use the C preporcessor to manipulate the 21 * files imported from the Hexagon architecture library. 22 */ 23 24 #include <stdio.h> 25 #define STRINGIZE(X) #X 26 27 int main(int argc, char *argv[]) 28 { 29 FILE *outfile; 30 31 if (argc != 2) { 32 fprintf(stderr, "Usage: gen_semantics ouptputfile\n"); 33 return 1; 34 } 35 outfile = fopen(argv[1], "w"); 36 if (outfile == NULL) { 37 fprintf(stderr, "Cannot open %s for writing\n", argv[1]); 38 return 1; 39 } 40 41 /* 42 * Process the instruction definitions 43 * Scalar core instructions have the following form 44 * Q6INSN(A2_add,"Rd32=add(Rs32,Rt32)",ATTRIBS(), 45 * "Add 32-bit registers", 46 * { RdV=RsV+RtV;}) 47 */ 48 #define Q6INSN(TAG, BEH, ATTRIBS, DESCR, SEM) \ 49 do { \ 50 fprintf(outfile, "SEMANTICS( \\\n" \ 51 " \"%s\", \\\n" \ 52 " %s, \\\n" \ 53 " \"\"\"%s\"\"\" \\\n" \ 54 ")\n", \ 55 #TAG, STRINGIZE(BEH), STRINGIZE(SEM)); \ 56 fprintf(outfile, "ATTRIBUTES( \\\n" \ 57 " \"%s\", \\\n" \ 58 " \"%s\" \\\n" \ 59 ")\n", \ 60 #TAG, STRINGIZE(ATTRIBS)); \ 61 } while (0); 62 #include "imported/allidefs.def" 63 #undef Q6INSN 64 65 /* 66 * Process the macro definitions 67 * Macros definitions have the following form 68 * DEF_MACRO( 69 * fLSBNEW0, 70 * predlog_read(thread,0), 71 * () 72 * ) 73 * The important part here is the attributes. Whenever an instruction 74 * invokes a macro, we add the macro's attributes to the instruction. 75 */ 76 #define DEF_MACRO(MNAME, BEH, ATTRS) \ 77 fprintf(outfile, "MACROATTRIB( \\\n" \ 78 " \"%s\", \\\n" \ 79 " \"\"\"%s\"\"\", \\\n" \ 80 " \"%s\" \\\n" \ 81 ")\n", \ 82 #MNAME, STRINGIZE(BEH), STRINGIZE(ATTRS)); 83 #include "imported/macros.def" 84 #undef DEF_MACRO 85 86 fclose(outfile); 87 return 0; 88 } 89