tools/protoparse.h

   1
   2 struct parsed_proto;
   3
   4 struct parsed_type {
   5         char *name;
   6         unsigned int is_array:1;
   7         unsigned int is_ptr:1;
   8         unsigned int is_struct:1; // split for args
   9 };
  10
  11 struct parsed_proto_arg {
  12         char *reg;
  13         struct parsed_type type;
  14         struct parsed_proto *fptr;
  15         void *datap;
  16 };
  17
  18 struct parsed_proto {
  19         char name[256];
  20         union {
  21                 struct parsed_type ret_type;
  22                 struct parsed_type type;
  23         };
  24         struct parsed_proto_arg arg[16];
  25         int argc;
  26         int argc_stack;
  27         int argc_reg;
  28         unsigned int is_func:1;
  29         unsigned int is_stdcall:1;
  30         unsigned int is_fastcall:1;
  31         unsigned int is_vararg:1;
  32         unsigned int is_fptr:1;
  33         unsigned int is_noreturn:1;
  34         unsigned int is_unresolved:1;
  35         unsigned int has_structarg:1;
  36 };
  37
  38 static const char *hdrfn;
  39 static int hdrfline = 0;
  40
  41 static void pp_copy_arg(struct parsed_proto_arg *d,
  42         const struct parsed_proto_arg *s);
  43
  44 static int b_pp_c_handler(char *proto, const char *fname);
  45
  46 static int do_protostrs(FILE *fhdr, const char *fname)
  47 {
  48         const char *finc_name;
  49         const char *hdrfn_saved;
  50         char protostr[256];
  51         char path[256];
  52         char fname_inc[256];
  53         FILE *finc;
  54         int line = 0;
  55         int ret;
  56         char *p;
  57
  58         hdrfn_saved = hdrfn;
  59         hdrfn = fname;
  60
  61         while (fgets(protostr, sizeof(protostr), fhdr))
  62         {
  63                 line++;
  64                 if (strncmp(protostr, "//#include ", 11) == 0) {
  65                         finc_name = protostr + 11;
  66                         p = strpbrk(finc_name, "\r\n ");
  67                         if (p != NULL)
  68                                 *p = 0;
  69
  70                         path[0] = 0;
  71                         p = strrchr(hdrfn_saved, '/');
  72                         if (p) {
  73                                 memcpy(path, hdrfn_saved,
  74                                         p - hdrfn_saved + 1);
  75                                 path[p - hdrfn_saved + 1] = 0;
  76                         }
  77                         snprintf(fname_inc, sizeof(fname_inc), "%s%s",
  78                                 path, finc_name);
  79                         finc = fopen(fname_inc, "r");
  80                         if (finc == NULL) {
  81                                 printf("%s:%d: can't open '%s'\n",
  82                                         fname_inc, line, finc_name);
  83                                 continue;
  84                         }
  85                         ret = do_protostrs(finc, finc_name);
  86                         fclose(finc);
  87                         if (ret < 0)
  88                                 break;
  89                         continue;
  90                 }
  91                 if (strncmp(sskip(protostr), "//", 2) == 0)
  92                         continue;
  93
  94                 p = protostr + strlen(protostr);
  95                 for (p--; p >= protostr && my_isblank(*p); --p)
  96                         *p = 0;
  97                 if (p < protostr)
  98                         continue;
  99
 100                 hdrfline = line;
 101
 102                 ret = b_pp_c_handler(protostr, hdrfn);
 103                 if (ret < 0)
 104                         break;
 105         }
 106
 107         hdrfn = hdrfn_saved;
 108
 109         if (feof(fhdr))
 110                 return 0;
 111
 112         return -1;
 113 }
 114
 115 static int get_regparm(char *dst, size_t dlen, char *p)
 116 {
 117         int i, o;
 118
 119         if (*p != '<')
 120                 return 0;
 121
 122         for (o = 0, i = 1; o < dlen; i++) {
 123                 if (p[i] == 0)
 124                         return 0;
 125                 if (p[i] == '>')
 126                         break;
 127                 dst[o++] = p[i];
 128         }
 129         dst[o] = 0;
 130         return i + 1;
 131 }
 132
 133 // hmh..
 134 static const char *known_type_mod[] = {
 135         "const",
 136         "signed",
 137         "unsigned",
 138         "struct",
 139         "enum",
 140         "CONST",
 141         "volatile",
 142 };
 143
 144 static const char *known_ptr_types[] = {
 145         "FARPROC",
 146         "WNDPROC",
 147         "HACCEL",
 148         "HANDLE",
 149         "HBITMAP",
 150         "HCURSOR",
 151         "HDC",
 152         "HFONT",
 153         "HGDIOBJ",
 154         "HGLOBAL",
 155         "HICON",
 156         "HINSTANCE",
 157         //"HIMC", // DWORD
 158         "HMODULE",
 159         "HPALETTE",
 160         "HRGN",
 161         "HRSRC",
 162         "HKEY",
 163         "HMENU",
 164         "HWND",
 165         "PCRITICAL_SECTION",
 166         "PDWORD",
 167         "PFILETIME",
 168         "PHKEY",
 169         "PLONG",
 170         "PMEMORY_BASIC_INFORMATION",
 171         "PUINT",
 172         "PVOID",
 173         "PCVOID",
 174         "DLGPROC",
 175         "TIMERPROC",
 176         "WNDENUMPROC",
 177         "va_list",
 178         "__VALIST",
 179 };
 180
 181 static const char *ignored_keywords[] = {
 182         "extern",
 183         "WINBASEAPI",
 184         "WINUSERAPI",
 185         "WINGDIAPI",
 186         "WINADVAPI",
 187 };
 188
 189 // returns ptr to char after type ends
 190 static int typecmp(const char *n, const char *t)
 191 {
 192         for (; *t != 0; n++, t++) {
 193                 while (n[0] == ' ' && (n[1] == ' ' || n[1] == '*'))
 194                         n++;
 195                 while (t[0] == ' ' && (t[1] == ' ' || t[1] == '*'))
 196                         t++;
 197                 if (*n != *t)
 198                         return *n - *t;
 199         }
 200
 201         return 0;
 202 }
 203
 204 static const char *skip_type_mod(const char *n)
 205 {
 206         int len;
 207         int i;
 208
 209         for (i = 0; i < ARRAY_SIZE(known_type_mod); i++) {
 210                 len = strlen(known_type_mod[i]);
 211                 if (strncmp(n, known_type_mod[i], len) != 0)
 212                         continue;
 213                 if (!my_isblank(n[len]))
 214                         continue;
 215
 216                 n += len;
 217                 while (my_isblank(*n))
 218                         n++;
 219                 i = 0;
 220         }
 221
 222         return n;
 223 }
 224
 225 static int check_type(const char *name, struct parsed_type *type)
 226 {
 227         const char *n, *n1;
 228         int ret = -1;
 229         int i;
 230
 231         n = skip_type_mod(name);
 232
 233         for (i = 0; i < ARRAY_SIZE(known_ptr_types); i++) {
 234                 if (typecmp(n, known_ptr_types[i]))
 235                         continue;
 236
 237                 type->is_ptr = 1;
 238                 break;
 239         }
 240
 241         if (n[0] == 'L' && n[1] == 'P' && strncmp(n, "LPARAM", 6))
 242                 type->is_ptr = 1;
 243
 244         // assume single word
 245         while (!my_isblank(*n) && !my_issep(*n))
 246                 n++;
 247
 248         while (1) {
 249                 n1 = n;
 250                 while (my_isblank(*n))
 251                         n++;
 252                 if (*n == '*') {
 253                         type->is_ptr = 1;
 254                         n++;
 255                         continue;
 256                 }
 257                 break;
 258         }
 259
 260         ret = n1 - name;
 261         type->name = strndup(name, ret);
 262         if (IS(type->name, "VOID"))
 263                 memcpy(type->name, "void", 4);
 264
 265         return ret;
 266 }
 267
 268 /* args are always expanded to 32bit */
 269 static const char *map_reg(const char *reg)
 270 {
 271         const char *regs_f[] = { "eax", "ebx", "ecx", "edx", "esi", "edi" };
 272         const char *regs_w[] = { "ax",  "bx",  "cx",  "dx",  "si",  "di" };
 273         const char *regs_b[] = { "al",  "bl",  "cl",  "dl" };
 274         int i;
 275
 276         for (i = 0; i < ARRAY_SIZE(regs_w); i++)
 277                 if (IS(reg, regs_w[i]))
 278                         return regs_f[i];
 279
 280         for (i = 0; i < ARRAY_SIZE(regs_b); i++)
 281                 if (IS(reg, regs_b[i]))
 282                         return regs_f[i];
 283
 284         return reg;
 285 }
 286
 287 static int check_struct_arg(struct parsed_proto_arg *arg)
 288 {
 289         if (IS(arg->type.name, "POINT"))
 290                 return 2 - 1;
 291
 292         return 0;
 293 }
 294
 295 static int parse_protostr(char *protostr, struct parsed_proto *pp)
 296 {
 297         struct parsed_proto_arg *arg;
 298         char regparm[16];
 299         char buf[256];
 300         char cconv[32];
 301         int xarg = 0;
 302         char *p, *p1;
 303         int i, l;
 304         int ret;
 305
 306         p = sskip(protostr);
 307         if (p[0] == '/' && p[1] == '/') {
 308                 printf("%s:%d: commented out?\n", hdrfn, hdrfline);
 309                 p = sskip(p + 2);
 310         }
 311
 312         // strip unneeded stuff
 313         for (p1 = p; p1[0] != 0 && p1[1] != 0; p1++) {
 314                 if ((p1[0] == '/' && p1[1] == '*')
 315                  || (p1[0] == '*' && p1[1] == '/'))
 316                         p1[0] = p1[1] = ' ';
 317         }
 318
 319         if (!strncmp(p, "DECLSPEC_NORETURN ", 18)) {
 320                 pp->is_noreturn = 1;
 321                 p = sskip(p + 18);
 322         }
 323
 324         for (i = 0; i < ARRAY_SIZE(ignored_keywords); i++) {
 325                 l = strlen(ignored_keywords[i]);
 326                 if (!strncmp(p, ignored_keywords[i], l) && my_isblank(p[l]))
 327                         p = sskip(p + l + 1);
 328         }
 329
 330         ret = check_type(p, &pp->ret_type);
 331         if (ret <= 0) {
 332                 printf("%s:%d:%zd: unhandled return in '%s'\n",
 333                         hdrfn, hdrfline, (p - protostr) + 1, protostr);
 334                 return -1;
 335         }
 336         p = sskip(p + ret);
 337
 338         if (!strncmp(p, "noreturn ", 9)) {
 339                 pp->is_noreturn = 1;
 340                 p = sskip(p + 9);
 341         }
 342
 343         if (!strchr(p, ')')) {
 344                 p = next_idt(buf, sizeof(buf), p);
 345                 p = sskip(p);
 346                 if (buf[0] == 0) {
 347                         printf("%s:%d:%zd: var name missing\n",
 348                                 hdrfn, hdrfline, (p - protostr) + 1);
 349                         return -1;
 350                 }
 351                 strcpy(pp->name, buf);
 352
 353                 p1 = strchr(p, ']');
 354                 if (p1 != NULL) {
 355                         p = p1 + 1;
 356                         pp->ret_type.is_array = 1;
 357                 }
 358                 return p - protostr;
 359         }
 360
 361         pp->is_func = 1;
 362
 363         if (*p == '(') {
 364                 pp->is_fptr = 1;
 365                 p = sskip(p + 1);
 366         }
 367
 368         p = next_word(cconv, sizeof(cconv), p);
 369         p = sskip(p);
 370         if (cconv[0] == 0) {
 371                 printf("%s:%d:%zd: cconv missing\n",
 372                         hdrfn, hdrfline, (p - protostr) + 1);
 373                 return -1;
 374         }
 375         if      (IS(cconv, "__cdecl"))
 376                 pp->is_stdcall = 0;
 377         else if (IS(cconv, "__stdcall"))
 378                 pp->is_stdcall = 1;
 379         else if (IS(cconv, "__fastcall")) {
 380                 pp->is_fastcall = 1;
 381                 pp->is_stdcall = 1; // sort of..
 382         }
 383         else if (IS(cconv, "__thiscall"))
 384                 pp->is_stdcall = 1;
 385         else if (IS(cconv, "__userpurge"))
 386                 pp->is_stdcall = 1; // IDA
 387         else if (IS(cconv, "__usercall"))
 388                 pp->is_stdcall = 0; // IDA
 389         else if (IS(cconv, "WINAPI"))
 390                 pp->is_stdcall = 1;
 391         else {
 392                 printf("%s:%d:%zd: unhandled cconv: '%s'\n",
 393                         hdrfn, hdrfline, (p - protostr) + 1, cconv);
 394                 return -1;
 395         }
 396
 397         if (pp->is_fptr) {
 398                 if (*p != '*') {
 399                         printf("%s:%d:%zd: '*' expected\n",
 400                                 hdrfn, hdrfline, (p - protostr) + 1);
 401                         return -1;
 402                 }
 403                 p++;
 404                 // XXX: skipping extra asterisks, for now
 405                 while (*p == '*')
 406                         p++;
 407                 p = sskip(p);
 408         }
 409
 410         p = next_idt(buf, sizeof(buf), p);
 411         p = sskip(p);
 412         if (buf[0] == 0) {
 413                 //printf("%s:%d:%zd: func name missing\n",
 414                 //      hdrfn, hdrfline, (p - protostr) + 1);
 415                 //return -1;
 416         }
 417         strcpy(pp->name, buf);
 418
 419         ret = get_regparm(regparm, sizeof(regparm), p);
 420         if (ret > 0) {
 421                 if (!IS(regparm, "eax") && !IS(regparm, "ax")
 422                  && !IS(regparm, "al") && !IS(regparm, "edx:eax"))
 423                 {
 424                         printf("%s:%d:%zd: bad regparm: %s\n",
 425                                 hdrfn, hdrfline, (p - protostr) + 1, regparm);
 426                         return -1;
 427                 }
 428                 p += ret;
 429                 p = sskip(p);
 430         }
 431
 432         if (pp->is_fptr) {
 433                 if (*p == '[') {
 434                         // not really ret_type is array, but ohwell
 435                         pp->ret_type.is_array = 1;
 436                         p = strchr(p + 1, ']');
 437                         if (p == NULL) {
 438                                 printf("%s:%d:%zd: ']' expected\n",
 439                                  hdrfn, hdrfline, (p - protostr) + 1);
 440                                 return -1;
 441                         }
 442                         p = sskip(p + 1);
 443                 }
 444                 if (*p != ')') {
 445                         printf("%s:%d:%zd: ')' expected\n",
 446                                 hdrfn, hdrfline, (p - protostr) + 1);
 447                         return -1;
 448                 }
 449                 p = sskip(p + 1);
 450         }
 451
 452         if (*p != '(') {
 453                 printf("%s:%d:%zd: '(' expected, got '%c'\n",
 454                                 hdrfn, hdrfline, (p - protostr) + 1, *p);
 455                 return -1;
 456         }
 457         p++;
 458
 459         // check for x(void)
 460         p = sskip(p);
 461         if ((!strncmp(p, "void", 4) || !strncmp(p, "VOID", 4))
 462            && *sskip(p + 4) == ')')
 463                 p += 4;
 464
 465         while (1) {
 466                 p = sskip(p);
 467                 if (*p == ')') {
 468                         p++;
 469                         break;
 470                 }
 471                 if (xarg > 0) {
 472                         if (*p != ',') {
 473                                 printf("%s:%d:%zd: ',' expected\n",
 474                                  hdrfn, hdrfline, (p - protostr) + 1);
 475                                 return -1;
 476                         }
 477                         p = sskip(p + 1);
 478                 }
 479
 480                 if (!strncmp(p, "...", 3)) {
 481                         pp->is_vararg = 1;
 482                         p = sskip(p + 3);
 483                         if (*p == ')') {
 484                                 p++;
 485                                 break;
 486                         }
 487                         printf("%s:%d:%zd: ')' expected\n",
 488                                 hdrfn, hdrfline, (p - protostr) + 1);
 489                         return -1;
 490                 }
 491
 492                 arg = &pp->arg[xarg];
 493                 xarg++;
 494
 495                 p1 = p;
 496                 ret = check_type(p, &arg->type);
 497                 if (ret <= 0) {
 498                         printf("%s:%d:%zd: unhandled type for arg%d\n",
 499                                 hdrfn, hdrfline, (p - protostr) + 1, xarg);
 500                         return -1;
 501                 }
 502                 p = sskip(p + ret);
 503
 504                 if (*p == '(') {
 505                         // func ptr
 506                         arg->fptr = calloc(1, sizeof(*arg->fptr));
 507                         ret = parse_protostr(p1, arg->fptr);
 508                         if (ret < 0) {
 509                                 printf("%s:%d:%zd: funcarg parse failed\n",
 510                                         hdrfn, hdrfline, p1 - protostr);
 511                                 return -1;
 512                         }
 513                         // we'll treat it as void * for non-calls
 514                         arg->type.name = strdup("void *");
 515                         arg->type.is_ptr = 1;
 516
 517                         p = p1 + ret;
 518                 }
 519
 520                 p = next_idt(buf, sizeof(buf), p);
 521                 p = sskip(p);
 522 #if 0
 523                 if (buf[0] == 0) {
 524                         printf("%s:%d:%zd: idt missing for arg%d\n",
 525                                 hdrfn, hdrfline, (p - protostr) + 1, xarg);
 526                         return -1;
 527                 }
 528 #endif
 529                 arg->reg = NULL;
 530
 531                 ret = get_regparm(regparm, sizeof(regparm), p);
 532                 if (ret > 0) {
 533                         p += ret;
 534                         p = sskip(p);
 535
 536                         arg->reg = strdup(map_reg(regparm));
 537                 }
 538
 539                 if (strstr(arg->type.name, "int64")
 540                     || IS(arg->type.name, "double"))
 541                 {
 542                         // hack..
 543                         free(arg->type.name);
 544                         arg->type.name = strdup("int");
 545                         pp_copy_arg(&pp->arg[xarg], arg);
 546                         xarg++;
 547                 }
 548
 549                 ret = check_struct_arg(arg);
 550                 if (ret > 0) {
 551                         pp->has_structarg = 1;
 552                         arg->type.is_struct = 1;
 553                         free(arg->type.name);
 554                         arg->type.name = strdup("int");
 555                         for (l = 0; l < ret; l++) {
 556                                 pp_copy_arg(&pp->arg[xarg], arg);
 557                                 xarg++;
 558                         }
 559                 }
 560         }
 561
 562         if (xarg > 0 && (IS(cconv, "__fastcall") || IS(cconv, "__thiscall"))) {
 563                 if (pp->arg[0].reg != NULL) {
 564                         printf("%s:%d: %s with arg1 spec %s?\n",
 565                                 hdrfn, hdrfline, cconv, pp->arg[0].reg);
 566                 }
 567                 pp->arg[0].reg = strdup("ecx");
 568         }
 569
 570         if (xarg > 1 && IS(cconv, "__fastcall")) {
 571                 if (pp->arg[1].reg != NULL) {
 572                         printf("%s:%d: %s with arg2 spec %s?\n",
 573                                 hdrfn, hdrfline, cconv, pp->arg[1].reg);
 574                 }
 575                 pp->arg[1].reg = strdup("edx");
 576         }
 577
 578         pp->argc = xarg;
 579
 580         for (i = 0; i < pp->argc; i++) {
 581                 if (pp->arg[i].reg == NULL)
 582                         pp->argc_stack++;
 583                 else
 584                         pp->argc_reg++;
 585         }
 586
 587         if (pp->argc == 1 && pp->arg[0].reg != NULL
 588             && IS(pp->arg[0].reg, "ecx"))
 589         {
 590                 pp->is_fastcall = 1;
 591         }
 592         else if (pp->argc_reg == 2
 593           && pp->arg[0].reg != NULL && IS(pp->arg[0].reg, "ecx")
 594           && pp->arg[1].reg != NULL && IS(pp->arg[1].reg, "edx"))
 595         {
 596                 pp->is_fastcall = 1;
 597         }
 598
 599         if (pp->is_vararg && (pp->is_stdcall || pp->is_fastcall)) {
 600                 printf("%s:%d: vararg %s?\n", hdrfn, hdrfline, cconv);
 601                 return -1;
 602         }
 603
 604         return p - protostr;
 605 }
 606
 607 static int pp_name_cmp(const void *p1, const void *p2)
 608 {
 609         const struct parsed_proto *pp1 = p1, *pp2 = p2;
 610         return strcmp(pp1->name, pp2->name);
 611 }
 612
 613 static struct parsed_proto *pp_cache;
 614 static int pp_cache_size;
 615 static int pp_cache_alloc;
 616
 617 static int b_pp_c_handler(char *proto, const char *fname)
 618 {
 619         int ret;
 620
 621         if (pp_cache_size >= pp_cache_alloc) {
 622                 pp_cache_alloc = pp_cache_alloc * 2 + 64;
 623                 pp_cache = realloc(pp_cache, pp_cache_alloc
 624                                 * sizeof(pp_cache[0]));
 625                 my_assert_not(pp_cache, NULL);
 626                 memset(pp_cache + pp_cache_size, 0,
 627                         (pp_cache_alloc - pp_cache_size)
 628                          * sizeof(pp_cache[0]));
 629         }
 630
 631         ret = parse_protostr(proto, &pp_cache[pp_cache_size]);
 632         if (ret < 0)
 633                 return -1;
 634
 635         pp_cache_size++;
 636         return 0;
 637 }
 638
 639 static void build_pp_cache(FILE *fhdr)
 640 {
 641         long pos;
 642         int ret;
 643
 644         pos = ftell(fhdr);
 645         rewind(fhdr);
 646
 647         ret = do_protostrs(fhdr, hdrfn);
 648         if (ret < 0)
 649                 exit(1);
 650
 651         qsort(pp_cache, pp_cache_size, sizeof(pp_cache[0]), pp_name_cmp);
 652         fseek(fhdr, pos, SEEK_SET);
 653 }
 654
 655 static const struct parsed_proto *proto_parse(FILE *fhdr, const char *sym,
 656         int quiet)
 657 {
 658         const struct parsed_proto *pp_ret;
 659         struct parsed_proto pp_search;
 660
 661         if (pp_cache == NULL)
 662                 build_pp_cache(fhdr);
 663
 664         if (sym[0] == '_') // && strncmp(fname, "stdc", 4) == 0)
 665                 sym++;
 666
 667         strcpy(pp_search.name, sym);
 668         pp_ret = bsearch(&pp_search, pp_cache, pp_cache_size,
 669                         sizeof(pp_cache[0]), pp_name_cmp);
 670         if (pp_ret == NULL && !quiet)
 671                 printf("%s: sym '%s' is missing\n", hdrfn, sym);
 672
 673         return pp_ret;
 674 }
 675
 676 static void pp_copy_arg(struct parsed_proto_arg *d,
 677         const struct parsed_proto_arg *s)
 678 {
 679         memcpy(d, s, sizeof(*d));
 680
 681         if (s->reg != NULL) {
 682                 d->reg = strdup(s->reg);
 683                 my_assert_not(d->reg, NULL);
 684         }
 685         if (s->type.name != NULL) {
 686                 d->type.name = strdup(s->type.name);
 687                 my_assert_not(d->type.name, NULL);
 688         }
 689         if (s->fptr != NULL) {
 690                 d->fptr = malloc(sizeof(*d->fptr));
 691                 my_assert_not(d->fptr, NULL);
 692                 memcpy(d->fptr, s->fptr, sizeof(*d->fptr));
 693         }
 694 }
 695
 696 struct parsed_proto *proto_clone(const struct parsed_proto *pp_c)
 697 {
 698         struct parsed_proto *pp;
 699         int i;
 700
 701         pp = malloc(sizeof(*pp));
 702         my_assert_not(pp, NULL);
 703         memcpy(pp, pp_c, sizeof(*pp)); // lazy..
 704
 705         // do the actual deep copy..
 706         for (i = 0; i < pp_c->argc; i++)
 707                 pp_copy_arg(&pp->arg[i], &pp_c->arg[i]);
 708         if (pp_c->ret_type.name != NULL)
 709                 pp->ret_type.name = strdup(pp_c->ret_type.name);
 710
 711         return pp;
 712 }
 713
 714 static inline void pp_print(char *buf, size_t buf_size,
 715   const struct parsed_proto *pp)
 716 {
 717   size_t l;
 718   int i;
 719
 720   snprintf(buf, buf_size, "%s %s(", pp->ret_type.name, pp->name);
 721   l = strlen(buf);
 722
 723   for (i = 0; i < pp->argc_reg; i++) {
 724     snprintf(buf + l, buf_size - l, "%s%s",
 725       i == 0 ? "" : ", ", pp->arg[i].reg);
 726     l = strlen(buf);
 727   }
 728   if (pp->argc_stack > 0) {
 729     snprintf(buf + l, buf_size - l, "%s{%d stack}",
 730       i == 0 ? "" : ", ", pp->argc_stack);
 731     l = strlen(buf);
 732   }
 733   snprintf(buf + l, buf_size - l, ")");
 734 }
 735
 736 static inline void proto_release(struct parsed_proto *pp)
 737 {
 738         int i;
 739
 740         for (i = 0; i < pp->argc; i++) {
 741                 if (pp->arg[i].reg != NULL)
 742                         free(pp->arg[i].reg);
 743                 if (pp->arg[i].type.name != NULL)
 744                         free(pp->arg[i].type.name);
 745                 if (pp->arg[i].fptr != NULL)
 746                         free(pp->arg[i].fptr);
 747         }
 748         if (pp->ret_type.name != NULL)
 749                 free(pp->ret_type.name);
 750         free(pp);
 751 }