| 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <string.h> |
| 4 | |
| 5 | #include "my_assert.h" |
| 6 | #include "my_str.h" |
| 7 | |
| 8 | struct sl_item { |
| 9 | char *name; |
| 10 | unsigned int callsites:1; |
| 11 | unsigned int found:1; |
| 12 | }; |
| 13 | |
| 14 | static int cmp_sym(const void *p1_, const void *p2_) |
| 15 | { |
| 16 | const struct sl_item *p1 = p1_, *p2 = p2_; |
| 17 | const char *s1 = p1->name, *s2 = p2->name; |
| 18 | int i; |
| 19 | |
| 20 | for (i = 0; ; i++) { |
| 21 | if ((s1[i] | s2[i]) == 0) |
| 22 | break; |
| 23 | |
| 24 | if (s1[i] == s2[i]) |
| 25 | continue; |
| 26 | |
| 27 | if (s1[i] == 0 && s2[i] == '@') |
| 28 | break; |
| 29 | if (s1[i] == '@' && s2[i] == 0) |
| 30 | break; |
| 31 | |
| 32 | return s1[i] - s2[i]; |
| 33 | } |
| 34 | |
| 35 | return 0; |
| 36 | } |
| 37 | |
| 38 | static int cmp_sym_sort(const void *p1_, const void *p2_) |
| 39 | { |
| 40 | const struct sl_item *p1 = p1_, *p2 = p2_; |
| 41 | const char *s1 = p1->name, *s2 = p2->name; |
| 42 | int ret; |
| 43 | |
| 44 | ret = cmp_sym(p1_, p2_); |
| 45 | if (ret == 0) { |
| 46 | printf("%s: dupe sym: '%s' '%s'\n", __func__, s1, s2); |
| 47 | exit(1); |
| 48 | } |
| 49 | return ret; |
| 50 | } |
| 51 | |
| 52 | void read_list(struct sl_item **sl_in, int *cnt, int *alloc, |
| 53 | FILE *f, int callsites) |
| 54 | { |
| 55 | struct sl_item *sl = *sl_in; |
| 56 | int c = *cnt; |
| 57 | char line[256]; |
| 58 | char word[256]; |
| 59 | |
| 60 | while (fgets(line, sizeof(line), f) != NULL) { |
| 61 | next_word(word, sizeof(word), line); |
| 62 | if (word[0] == 0 || word[0] == ';' || word[0] == '#') |
| 63 | continue; |
| 64 | |
| 65 | sl[c].name = strdup(word); |
| 66 | sl[c].callsites = callsites; |
| 67 | sl[c].found = 0; |
| 68 | c++; |
| 69 | |
| 70 | if (c >= *alloc) { |
| 71 | *alloc *= 2; |
| 72 | sl = realloc(sl, *alloc * sizeof(sl[0])); |
| 73 | my_assert_not(sl, NULL); |
| 74 | memset(sl + c, 0, (*alloc - c) * sizeof(sl[0])); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | *sl_in = sl; |
| 79 | *cnt = c; |
| 80 | } |
| 81 | |
| 82 | const char *sym_use(const struct sl_item *sym) |
| 83 | { |
| 84 | static char buf[256+3]; |
| 85 | int ret; |
| 86 | |
| 87 | ret = snprintf(buf, sizeof(buf), "rm_%s", sym->name); |
| 88 | if (ret >= sizeof(buf)) { |
| 89 | printf("truncation detected: '%s'\n", buf); |
| 90 | exit(1); |
| 91 | } |
| 92 | |
| 93 | return buf; |
| 94 | } |
| 95 | |
| 96 | #define IS(w, y) !strcasecmp(w, y) |
| 97 | #define IS_OR2(w, x, y) (IS(w, x) || IS(w, y)) |
| 98 | #define IS_OR3(w, x, y, z) (IS(w, x) || IS(w, y) || IS(w, z)) |
| 99 | |
| 100 | int main(int argc, char *argv[]) |
| 101 | { |
| 102 | struct sl_item *symlist, *sym, ssym = { NULL, }; |
| 103 | int patch_callsites = 0; |
| 104 | FILE *fout, *fin, *f; |
| 105 | int symlist_alloc; |
| 106 | int symlist_cnt; |
| 107 | char line[256]; |
| 108 | char word[256]; |
| 109 | char word2[256]; |
| 110 | char word3[256]; |
| 111 | char word4[256]; |
| 112 | char word5[256]; |
| 113 | char word6[256]; |
| 114 | char func[256]; |
| 115 | char *p, *p2; |
| 116 | int i; |
| 117 | |
| 118 | if (argc < 4) { |
| 119 | // -c - patch callsites |
| 120 | printf("usage:\n%s <asmf_out> <asmf_in> [[-c] <listf>]*>\n", |
| 121 | argv[0]); |
| 122 | return 1; |
| 123 | } |
| 124 | |
| 125 | symlist_alloc = 16; |
| 126 | symlist_cnt = 0; |
| 127 | symlist = calloc(symlist_alloc, sizeof(symlist[0])); |
| 128 | my_assert_not(symlist, NULL); |
| 129 | |
| 130 | for (i = 3; i < argc; i++) { |
| 131 | if (strcmp(argv[i], "-c") == 0) { |
| 132 | patch_callsites = 1; |
| 133 | continue; |
| 134 | } |
| 135 | |
| 136 | f = fopen(argv[i], "r"); |
| 137 | my_assert_not(f, NULL); |
| 138 | read_list(&symlist, &symlist_cnt, &symlist_alloc, |
| 139 | f, patch_callsites); |
| 140 | fclose(f); |
| 141 | |
| 142 | patch_callsites = 0; |
| 143 | } |
| 144 | |
| 145 | qsort(symlist, symlist_cnt, sizeof(symlist[0]), cmp_sym_sort); |
| 146 | |
| 147 | #if 0 |
| 148 | printf("symlist:\n"); |
| 149 | for (i = 0; i < symlist_cnt; i++) |
| 150 | printf("%d '%s'\n", symlist[i].callsites, symlist[i].name); |
| 151 | #endif |
| 152 | |
| 153 | fin = fopen(argv[2], "r"); |
| 154 | my_assert_not(fin, NULL); |
| 155 | |
| 156 | fout = fopen(argv[1], "w"); |
| 157 | my_assert_not(fout, NULL); |
| 158 | |
| 159 | while (fgets(line, sizeof(line), fin)) |
| 160 | { |
| 161 | p = sskip(line); |
| 162 | if (*p == 0 || *p == ';') |
| 163 | goto pass; |
| 164 | |
| 165 | p = sskip(next_word(word, sizeof(word), p)); |
| 166 | if (*p == 0 || *p == ';') |
| 167 | goto pass; // need at least 2 words |
| 168 | |
| 169 | p = next_word(word2, sizeof(word2), p); |
| 170 | |
| 171 | if (IS_OR2(word2, "proc", "endp")) { |
| 172 | if (IS(word2, "proc")) |
| 173 | strcpy(func, word); |
| 174 | else |
| 175 | func[0] = 0; |
| 176 | |
| 177 | ssym.name = word; |
| 178 | sym = bsearch(&ssym, symlist, symlist_cnt, |
| 179 | sizeof(symlist[0]), cmp_sym); |
| 180 | if (sym != NULL) { |
| 181 | sym->found = 1; |
| 182 | fprintf(fout, "rm_%s\t%s%s", word, word2, p); |
| 183 | continue; |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | if (IS_OR3(word, "call", "jmp", "public")) { |
| 188 | ssym.name = word2; |
| 189 | sym = bsearch(&ssym, symlist, symlist_cnt, |
| 190 | sizeof(symlist[0]), cmp_sym); |
| 191 | if (sym != NULL |
| 192 | && (sym->callsites || IS(word2, func))) |
| 193 | { |
| 194 | fprintf(fout, "\t\t%s\t%s%s", word, |
| 195 | sym_use(sym), p); |
| 196 | continue; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | p = sskip(p); |
| 201 | if (*p == 0 || *p == ';') |
| 202 | goto pass; // need at least 3 words |
| 203 | |
| 204 | p = next_word(word3, sizeof(word3), p); |
| 205 | |
| 206 | // push offset <sym> |
| 207 | // jcc short <sym> |
| 208 | if ( (IS(word, "push") && IS(word2, "offset")) |
| 209 | || (word[0] == 'j' && IS(word2, "short")) ) { |
| 210 | ssym.name = word3; |
| 211 | sym = bsearch(&ssym, symlist, symlist_cnt, |
| 212 | sizeof(symlist[0]), cmp_sym); |
| 213 | if (sym != NULL |
| 214 | && (sym->callsites || IS(word3, func))) |
| 215 | { |
| 216 | fprintf(fout, "\t\t%s %s %s%s", |
| 217 | word, word2, sym_use(sym), p); |
| 218 | continue; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | // dd offset <sym> |
| 223 | if (IS(word, "dd") && IS(word2, "offset")) { |
| 224 | fprintf(fout, "\t\tdd"); |
| 225 | strcpy(word, word3); |
| 226 | goto offset_loop; |
| 227 | } |
| 228 | |
| 229 | p = sskip(p); |
| 230 | if (*p == 0 || *p == ';') |
| 231 | goto pass; // need at least 4 words |
| 232 | |
| 233 | p = next_word(word4, sizeof(word4), p); |
| 234 | |
| 235 | // <name> dd offset <sym> |
| 236 | if (IS(word2, "dd") && IS(word3, "offset")) { |
| 237 | fprintf(fout, "%s\tdd", word); |
| 238 | strcpy(word, word4); |
| 239 | goto offset_loop; |
| 240 | } |
| 241 | |
| 242 | // mov <something>, offset <sym> |
| 243 | // jcc <some> ptr <sym> |
| 244 | if ( (IS(word, "mov") && IS(word3, "offset")) |
| 245 | || (word[0] == 'j' && IS(word3, "ptr")) ) { |
| 246 | ssym.name = word4; |
| 247 | sym = bsearch(&ssym, symlist, symlist_cnt, |
| 248 | sizeof(symlist[0]), cmp_sym); |
| 249 | if (sym != NULL && sym->callsites) { |
| 250 | fprintf(fout, "\t\t%s\t%s %s %s%s", |
| 251 | word, word2, word3, |
| 252 | sym_use(sym), p); |
| 253 | continue; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | p = sskip(p); |
| 258 | if (*p == 0 || *p == ';') |
| 259 | goto pass; // need at least 5 words |
| 260 | |
| 261 | p = next_word(word5, sizeof(word5), p); |
| 262 | |
| 263 | p = sskip(p); |
| 264 | if (*p == 0 || *p == ';') |
| 265 | goto pass; // need at least 6 words |
| 266 | |
| 267 | p = next_word(word6, sizeof(word6), p); |
| 268 | |
| 269 | // <op> dword ptr <something>, offset <sym> |
| 270 | if ( IS(word2, "dword") && IS(word3, "ptr") |
| 271 | && IS(word5, "offset") ) { |
| 272 | ssym.name = word6; |
| 273 | sym = bsearch(&ssym, symlist, symlist_cnt, |
| 274 | sizeof(symlist[0]), cmp_sym); |
| 275 | if (sym != NULL && sym->callsites) { |
| 276 | fprintf(fout, "\t\t%s\tdword ptr %s offset %s%s", |
| 277 | word, word4, sym_use(sym), p); |
| 278 | continue; |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | pass: |
| 283 | fwrite(line, 1, strlen(line), fout); |
| 284 | continue; |
| 285 | |
| 286 | offset_loop: |
| 287 | while (1) { |
| 288 | p2 = strchr(word, ','); |
| 289 | if (p2) |
| 290 | *p2 = 0; |
| 291 | |
| 292 | ssym.name = word; |
| 293 | sym = bsearch(&ssym, symlist, symlist_cnt, |
| 294 | sizeof(symlist[0]), cmp_sym); |
| 295 | fprintf(fout, " offset %s%s", |
| 296 | (sym != NULL && sym->callsites) ? sym_use(sym) : word, |
| 297 | p2 ? "," : ""); |
| 298 | |
| 299 | p2 = next_word(word, sizeof(word), p); |
| 300 | if (word[0] == 0 || word[0] == ';') { |
| 301 | break; |
| 302 | } |
| 303 | if (!IS(word, "offset")) { |
| 304 | printf("could not handle offset array\n"); |
| 305 | break; |
| 306 | } |
| 307 | p = next_word(word, sizeof(word), p2); |
| 308 | } |
| 309 | fprintf(fout, "%s", p); |
| 310 | continue; |
| 311 | } |
| 312 | |
| 313 | for (i = 0; i < symlist_cnt; i++) { |
| 314 | if (!symlist[i].found) |
| 315 | printf("warning: sym '%s' not found\n", symlist[i].name); |
| 316 | } |
| 317 | |
| 318 | fclose(fin); |
| 319 | fclose(fout); |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | // vim:ts=2:shiftwidth=2 |