1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2023 Intel Corporation 4 */ 5 6 #define _GNU_SOURCE 7 #include <ctype.h> 8 #include <errno.h> 9 #include <stdbool.h> 10 #include <stdio.h> 11 #include <string.h> 12 13 #define HEADER \ 14 "// SPDX-License-Identifier: MIT\n" \ 15 "\n" \ 16 "/*\n" \ 17 " * DO NOT MODIFY.\n" \ 18 " *\n" \ 19 " * This file was generated from rules: %s\n" \ 20 " */\n" \ 21 "#ifndef _GENERATED_XE_WA_OOB_\n" \ 22 "#define _GENERATED_XE_WA_OOB_\n" \ 23 "\n" \ 24 "enum {\n" 25 26 #define FOOTER \ 27 "};\n" \ 28 "\n" \ 29 "#endif\n" 30 31 static void print_usage(FILE *f) 32 { 33 fprintf(f, "usage: %s <input-rule-file> <generated-c-source-file> <generated-c-header-file>\n", 34 program_invocation_short_name); 35 } 36 37 static void print_parse_error(const char *err_msg, const char *line, 38 unsigned int lineno) 39 { 40 fprintf(stderr, "ERROR: %s\nERROR: %u: %.60s\n", 41 err_msg, lineno, line); 42 } 43 44 static char *strip(char *line, size_t linelen) 45 { 46 while (isspace(*(line + linelen))) 47 linelen--; 48 49 line[linelen - 1] = '\0'; 50 51 return line + strspn(line, " \f\n\r\t\v"); 52 } 53 54 #define MAX_LINE_LEN 4096 55 static int parse(FILE *input, FILE *csource, FILE *cheader) 56 { 57 char line[MAX_LINE_LEN + 1]; 58 char *name, *prev_name = NULL, *rules; 59 unsigned int lineno = 0, idx = 0; 60 61 while (fgets(line, sizeof(line), input)) { 62 size_t linelen; 63 bool is_continuation; 64 65 if (line[0] == '\0' || line[0] == '#' || line[0] == '\n') { 66 lineno++; 67 continue; 68 } 69 70 linelen = strlen(line); 71 if (linelen == MAX_LINE_LEN) { 72 print_parse_error("line too long", line, lineno); 73 return -EINVAL; 74 } 75 76 is_continuation = isspace(line[0]); 77 name = strip(line, linelen); 78 79 if (!is_continuation) { 80 name = strtok(name, " \t"); 81 rules = strtok(NULL, ""); 82 } else { 83 if (!prev_name) { 84 print_parse_error("invalid rule continuation", 85 line, lineno); 86 return -EINVAL; 87 } 88 89 rules = name; 90 name = NULL; 91 } 92 93 if (rules[0] == '\0') { 94 print_parse_error("invalid empty rule\n", line, lineno); 95 return -EINVAL; 96 } 97 98 if (name) { 99 fprintf(cheader, "\tXE_WA_OOB_%s = %u,\n", name, idx); 100 101 /* Close previous entry before starting a new one */ 102 if (idx) 103 fprintf(csource, ") },\n"); 104 105 fprintf(csource, "{ XE_RTP_NAME(\"%s\"),\n XE_RTP_RULES(%s", 106 name, rules); 107 idx++; 108 } else { 109 fprintf(csource, ", OR,\n\t%s", rules); 110 } 111 112 lineno++; 113 if (!is_continuation) 114 prev_name = name; 115 } 116 117 /* Close last entry */ 118 if (idx) 119 fprintf(csource, ") },\n"); 120 121 fprintf(cheader, "\t_XE_WA_OOB_COUNT = %u\n", idx); 122 123 return 0; 124 } 125 126 int main(int argc, const char *argv[]) 127 { 128 enum { 129 ARGS_INPUT, 130 ARGS_CSOURCE, 131 ARGS_CHEADER, 132 _ARGS_COUNT 133 }; 134 struct { 135 const char *fn; 136 const char *mode; 137 FILE *f; 138 } args[] = { 139 [ARGS_INPUT] = { .fn = argv[1], .mode = "r" }, 140 [ARGS_CSOURCE] = { .fn = argv[2], .mode = "w" }, 141 [ARGS_CHEADER] = { .fn = argv[3], .mode = "w" }, 142 }; 143 int ret = 1; 144 145 if (argc < 3) { 146 fprintf(stderr, "ERROR: wrong arguments\n"); 147 print_usage(stderr); 148 return 1; 149 } 150 151 for (int i = 0; i < _ARGS_COUNT; i++) { 152 args[i].f = fopen(args[i].fn, args[i].mode); 153 if (!args[i].f) { 154 fprintf(stderr, "ERROR: Can't open %s: %m\n", 155 args[i].fn); 156 goto err; 157 } 158 } 159 160 fprintf(args[ARGS_CHEADER].f, HEADER, args[ARGS_INPUT].fn); 161 ret = parse(args[ARGS_INPUT].f, args[ARGS_CSOURCE].f, 162 args[ARGS_CHEADER].f); 163 if (!ret) 164 fprintf(args[ARGS_CHEADER].f, FOOTER); 165 166 err: 167 for (int i = 0; i < _ARGS_COUNT; i++) { 168 if (args[i].f) 169 fclose(args[i].f); 170 } 171 172 return ret; 173 } 174