stabs.c 52.7 KB
Newer Older
1 2 3 4
/*
 * File stabs.c - read stabs information from the modules
 *
 * Copyright (C) 1996,      Eric Youngdale.
5
 *		 1999-2005, Eric Pouech
6 7 8 9 10 11 12 13 14 15 16 17 18
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
 *
 *
 * Maintenance Information
 * -----------------------
 *
 * For documentation on the stabs format see for example
 *   The "stabs" debug format
 *     by Julia Menapace, Jim Kingdon, David Mackenzie
 *     of Cygnus Support
 *     available (hopefully) from http:\\sources.redhat.com\gdb\onlinedocs
 */

#include "config.h"

#include <sys/types.h>
#include <fcntl.h>
36 37 38
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdio.h>
#ifndef PATH_MAX
#define PATH_MAX MAX_PATH
#endif
#include <assert.h>
#include <stdarg.h>

#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "winnls.h"

#include "dbghelp_private.h"

#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_stabs);

#ifndef N_UNDF
#define N_UNDF		0x00
#endif

#define N_GSYM		0x20
#define N_FUN		0x24
#define N_STSYM		0x26
#define N_LCSYM		0x28
#define N_MAIN		0x2a
#define N_ROSYM		0x2c
76
#define N_BNSYM		0x2e
77 78 79
#define N_OPT		0x3c
#define N_RSYM		0x40
#define N_SLINE		0x44
80
#define N_ENSYM		0x4e
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106
#define N_SO		0x64
#define N_LSYM		0x80
#define N_BINCL		0x82
#define N_SOL		0x84
#define N_PSYM		0xa0
#define N_EINCL		0xa2
#define N_LBRAC		0xc0
#define N_EXCL		0xc2
#define N_RBRAC		0xe0

struct stab_nlist
{
    union
    {
        char*                   n_name;
        struct stab_nlist*      n_next;
        long                    n_strx;
    } n_un;
    unsigned char       n_type;
    char                n_other;
    short               n_desc;
    unsigned long       n_value;
};

static void stab_strcpy(char* dest, int sz, const char* source)
{
107
    char*       ptr = dest;
108 109 110 111
    /*
     * A strcpy routine that stops when we hit the ':' character.
     * Faster than copying the whole thing, and then nuking the
     * ':'.
112
     * Takes also care of (valid) a::b constructs
113
     */
114 115
    while (*source != '\0')
    {
116
        if (source[0] != ':' && sz-- > 0) *ptr++ = *source++;
117 118
        else if (source[1] == ':' && (sz -= 2) > 0)
        {
119 120
            *ptr++ = *source++;
            *ptr++ = *source++;
121 122 123
        }
        else break;
    }
124 125
    *ptr-- = '\0';
    /* GCC emits, in some cases, a .<digit>+ suffix.
126 127 128 129 130 131
     * This is used for static variable inside functions, so
     * that we can have several such variables with same name in
     * the same compilation unit
     * We simply ignore that suffix when present (we also get rid
     * of it in ELF symtab parsing)
     */
132
    if (ptr >= dest && isdigit(*ptr))
133
    {
134 135
        while (ptr > dest && isdigit(*ptr)) ptr--;
        if (*ptr == '.') *ptr = '\0';
136
    }
137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194
    assert(sz > 0);
}

typedef struct
{
   char*		name;
   unsigned long	value;
   struct symt**        vector;
   int			nrofentries;
} include_def;

#define MAX_INCLUDES	5120

static include_def* 	        include_defs = NULL;
static int	     	        num_include_def = 0;
static int		        num_alloc_include_def = 0;
static int                      cu_include_stack[MAX_INCLUDES];
static int		        cu_include_stk_idx = 0;
static struct symt**            cu_vector = NULL;
static int 		        cu_nrofentries = 0;
static struct symt_basic*       stabs_basic[36];

static int stabs_new_include(const char* file, unsigned long val)
{
    if (num_include_def == num_alloc_include_def)
    {
        num_alloc_include_def += 256;
        if (!include_defs)
            include_defs = HeapAlloc(GetProcessHeap(), 0, 
                                     sizeof(include_defs[0]) * num_alloc_include_def);
        else
            include_defs = HeapReAlloc(GetProcessHeap(), 0, include_defs,
                                       sizeof(include_defs[0]) * num_alloc_include_def);
        memset(include_defs + num_include_def, 0, sizeof(include_defs[0]) * 256);
    }
    include_defs[num_include_def].name = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(file) + 1), file);
    include_defs[num_include_def].value = val;
    include_defs[num_include_def].vector = NULL;
    include_defs[num_include_def].nrofentries = 0;

    return num_include_def++;
}

static int stabs_find_include(const char* file, unsigned long val)
{
    int		i;

    for (i = 0; i < num_include_def; i++)
    {
        if (val == include_defs[i].value &&
            strcmp(file, include_defs[i].name) == 0)
            return i;
    }
    return -1;
}

static int stabs_add_include(int idx)
{
195
    if (idx < 0) return -1;
196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373
    cu_include_stk_idx++;

    /* if this happens, just bump MAX_INCLUDES */
    /* we could also handle this as another dynarray */
    assert(cu_include_stk_idx < MAX_INCLUDES);
    cu_include_stack[cu_include_stk_idx] = idx;
    return cu_include_stk_idx;
}

static void stabs_reset_includes(void)
{
    /*
     * The struct symt:s that we would need to use are reset when
     * we start a new file. (at least the ones in filenr == 0)
     */
    cu_include_stk_idx = 0;/* keep 0 as index for the .c file itself */
    memset(cu_vector, 0, sizeof(cu_vector[0]) * cu_nrofentries);
}

static void stabs_free_includes(void)
{
    int i;

    stabs_reset_includes();
    for (i = 0; i < num_include_def; i++)
    {
        HeapFree(GetProcessHeap(), 0, include_defs[i].name);
        HeapFree(GetProcessHeap(), 0, include_defs[i].vector);
    }
    HeapFree(GetProcessHeap(), 0, include_defs);
    include_defs = NULL;
    num_include_def = 0;
    num_alloc_include_def = 0;
    HeapFree(GetProcessHeap(), 0, cu_vector);
    cu_vector = NULL;
    cu_nrofentries = 0;
}

static struct symt** stabs_find_ref(long filenr, long subnr)
{
    struct symt**       ret;

    /* FIXME: I could perhaps create a dummy include_def for each compilation
     * unit which would allow not to handle those two cases separately
     */
    if (filenr == 0)
    {
        if (cu_nrofentries <= subnr)
	{
            if (!cu_vector)
                cu_vector = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 
                                      sizeof(cu_vector[0]) * (subnr+1));
            else
                cu_vector = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 
                                        cu_vector, sizeof(cu_vector[0]) * (subnr+1));
            cu_nrofentries = subnr + 1;
	}
        ret = &cu_vector[subnr];
    }
    else
    {
        include_def*	idef;

        assert(filenr <= cu_include_stk_idx);
        idef = &include_defs[cu_include_stack[filenr]];

        if (idef->nrofentries <= subnr)
	{
            if (!idef->vector)
                idef->vector = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 
                                         sizeof(idef->vector[0]) * (subnr+1));
            else
                idef->vector = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 
                                           idef->vector, sizeof(idef->vector[0]) * (subnr+1));
            idef->nrofentries = subnr + 1;
	}
        ret = &idef->vector[subnr];
    }
    TRACE("(%ld,%ld) => %p (%p)\n", filenr, subnr, ret, *ret);
    return ret;
}

static struct symt** stabs_read_type_enum(const char** x)
{
    long        filenr, subnr;

    if (**x == '(') 
    {
	(*x)++;					/* '('   */
	filenr = strtol(*x, (char**)x, 10);	/* <int> */
	(*x)++;					/* ','   */
	subnr = strtol(*x, (char**)x, 10);	/* <int> */
	(*x)++;					/* ')'   */
    }
    else
    {
    	filenr = 0;
	subnr = strtol(*x, (char**)x, 10);      /* <int> */
    }
    return stabs_find_ref(filenr, subnr);
}

#define PTS_DEBUG
struct ParseTypedefData
{
    const char*		ptr;
    char		buf[1024];
    int			idx;
    struct module*      module;
#ifdef PTS_DEBUG
    struct PTS_Error 
    {
        const char*         ptr;
        unsigned            line;
    } errors[16];
    int                 err_idx;
#endif
};

#ifdef PTS_DEBUG
static void stabs_pts_push(struct ParseTypedefData* ptd, unsigned line)
{
    assert(ptd->err_idx < sizeof(ptd->errors) / sizeof(ptd->errors[0]));
    ptd->errors[ptd->err_idx].line = line;
    ptd->errors[ptd->err_idx].ptr = ptd->ptr;
    ptd->err_idx++;
}
#define PTS_ABORTIF(ptd, t) do { if (t) { stabs_pts_push((ptd), __LINE__); return -1;} } while (0)
#else
#define PTS_ABORTIF(ptd, t) do { if (t) return -1; } while (0)
#endif

static int stabs_get_basic(struct ParseTypedefData* ptd, unsigned basic, struct symt** symt)
{
    PTS_ABORTIF(ptd, basic >= sizeof(stabs_basic) / sizeof(stabs_basic[0]));

    if (!stabs_basic[basic])
    {
        switch (basic)
        {
        case  1: stabs_basic[basic] = symt_new_basic(ptd->module, btInt,     "int", 4); break;
        case  2: stabs_basic[basic] = symt_new_basic(ptd->module, btChar,    "char", 1); break;
        case  3: stabs_basic[basic] = symt_new_basic(ptd->module, btInt,     "short int", 2); break;
        case  4: stabs_basic[basic] = symt_new_basic(ptd->module, btInt,     "long int", 4); break;
        case  5: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt,    "unsigned char", 1); break;
        case  6: stabs_basic[basic] = symt_new_basic(ptd->module, btInt,     "signed char", 1); break;
        case  7: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt,    "unsigned short int", 2); break;
        case  8: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt,    "unsigned int", 4); break;
        case  9: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt,    "unsigned", 2); break;
        case 10: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt,    "unsigned long int", 2); break;
        case 11: stabs_basic[basic] = symt_new_basic(ptd->module, btVoid,    "void", 0); break;
        case 12: stabs_basic[basic] = symt_new_basic(ptd->module, btFloat,   "float", 4); break;
        case 13: stabs_basic[basic] = symt_new_basic(ptd->module, btFloat,   "double", 8); break;
        case 14: stabs_basic[basic] = symt_new_basic(ptd->module, btFloat,   "long double", 12); break;
        case 15: stabs_basic[basic] = symt_new_basic(ptd->module, btInt,     "integer", 4); break;
        case 16: stabs_basic[basic] = symt_new_basic(ptd->module, btBool,    "bool", 1); break;
        /*    case 17: short real */
        /*    case 18: real */
        case 25: stabs_basic[basic] = symt_new_basic(ptd->module, btComplex, "float complex", 8); break;
        case 26: stabs_basic[basic] = symt_new_basic(ptd->module, btComplex, "double complex", 16); break;
        case 30: stabs_basic[basic] = symt_new_basic(ptd->module, btWChar,   "wchar_t", 2); break;
        case 31: stabs_basic[basic] = symt_new_basic(ptd->module, btInt,     "long long int", 8); break;
        case 32: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt,    "long long unsigned", 8); break;
            /* starting at 35 are wine extensions (especially for R implementation) */
        case 35: stabs_basic[basic] = symt_new_basic(ptd->module, btComplex, "long double complex", 24); break;
        default: PTS_ABORTIF(ptd, 1);
        }
    }   
    *symt = &stabs_basic[basic]->symt;
    return 0;
}

static int stabs_pts_read_type_def(struct ParseTypedefData* ptd, 
                                   const char* typename, struct symt** dt);

static int stabs_pts_read_id(struct ParseTypedefData* ptd)
{
    const char*	        first = ptd->ptr;
374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396
    unsigned int	template = 0;
    char                ch;

    while ((ch = *ptd->ptr++) != '\0')
    {
        switch (ch)
        {
        case ':':
            if (template == 0)
            {
                unsigned int len = ptd->ptr - first - 1;
                PTS_ABORTIF(ptd, len >= sizeof(ptd->buf) - ptd->idx);
                memcpy(ptd->buf + ptd->idx, first, len);
                ptd->buf[ptd->idx + len] = '\0';
                ptd->idx += len + 1;
                return 0;
            }
            break;
        case '<': template++; break;
        case '>': PTS_ABORTIF(ptd, template == 0); template--; break;
        }
    }
    return -1;
397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430
}

static int stabs_pts_read_number(struct ParseTypedefData* ptd, long* v)
{
    char*	last;

    *v = strtol(ptd->ptr, &last, 10);
    PTS_ABORTIF(ptd, last == ptd->ptr);
    ptd->ptr = last;
    return 0;
}

static int stabs_pts_read_type_reference(struct ParseTypedefData* ptd,
                                         long* filenr, long* subnr)
{
    if (*ptd->ptr == '(')
    {
	/* '(' <int> ',' <int> ')' */
	ptd->ptr++;
	PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, filenr) == -1);
	PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
	PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, subnr) == -1);
	PTS_ABORTIF(ptd, *ptd->ptr++ != ')');
    }
    else
    {
    	*filenr = 0;
	PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, subnr) == -1);
    }
    return 0;
}

struct pts_range_value
{
431
    ULONGLONG           val;
432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485
    int                 sign;
};

static int stabs_pts_read_range_value(struct ParseTypedefData* ptd, struct pts_range_value* prv)
{
    char*	last;

    switch (*ptd->ptr)
    {
    case '0':
        while (*ptd->ptr == '0') ptd->ptr++;
        if (*ptd->ptr >= '1' && *ptd->ptr <= '7')
        {
            switch (ptd->ptr[1])
            {
            case '0': 
                PTS_ABORTIF(ptd, ptd->ptr[0] != '1');
                prv->sign = -1;
                prv->val = 0;
                while (isdigit(*ptd->ptr)) prv->val = (prv->val << 3) + *ptd->ptr++ - '0';
                break;
            case '7':
                prv->sign = 1;
                prv->val = 0;
                while (isdigit(*ptd->ptr)) prv->val = (prv->val << 3) + *ptd->ptr++ - '0';
                break;
            default: PTS_ABORTIF(ptd, 1); break;
            }
        } else prv->sign = 0;
        break;
    case '-':
        prv->sign = -1;
        prv->val = strtoull(++ptd->ptr, &last, 10);
        ptd->ptr = last;
        break;
    case '+':
    default:    
        prv->sign = 1;
        prv->val = strtoull(ptd->ptr, &last, 10);
        ptd->ptr = last;
        break;
    }
    return 0;
}

static int stabs_pts_read_range(struct ParseTypedefData* ptd, const char* typename,
                                struct symt** dt)
{
    struct symt*                ref;
    struct pts_range_value      lo;
    struct pts_range_value      hi;
    unsigned                    size;
    enum BasicType              bt;
    int                         i;
486
    ULONGLONG                   v;
487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629

    /* type ';' <int> ';' <int> ';' */
    PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref) == -1);
    PTS_ABORTIF(ptd, *ptd->ptr++ != ';');	/* ';' */
    PTS_ABORTIF(ptd, stabs_pts_read_range_value(ptd, &lo) == -1);
    PTS_ABORTIF(ptd, *ptd->ptr++ != ';');	/* ';' */
    PTS_ABORTIF(ptd, stabs_pts_read_range_value(ptd, &hi) == -1);
    PTS_ABORTIF(ptd, *ptd->ptr++ != ';');	/* ';' */

    /* basically, we don't use ref... in some cases, for example, float is declared
     * as a derivated type of int... which won't help us... so we guess the types
     * from the various formats
     */
    if (lo.sign == 0 && hi.sign < 0)
    {
        bt = btUInt;
        size = hi.val;
    }
    else if (lo.sign < 0 && hi.sign == 0)
    {
        bt = btUInt;
        size = lo.val;
    }
    else if (lo.sign > 0 && hi.sign == 0)
    {
        bt = btFloat;
        size = lo.val;
    }
    else if (lo.sign < 0 && hi.sign > 0)
    {
        v = 1 << 7;
        for (i = 7; i < 64; i += 8)
        {
            if (lo.val == v && hi.val == v - 1)
            {
                bt = btInt;
                size = (i + 1) / 8;
                break;
            }
            v <<= 8;
        }
        PTS_ABORTIF(ptd, i >= 64);
    }
    else if (lo.sign == 0 && hi.sign > 0)
    {
        if (hi.val == 127) /* specific case for char... */
        {
            bt = btChar;
            size = 1;
        }
        else
        {
            v = 1;
            for (i = 8; i <= 64; i += 8)
            {
                v <<= 8;
                if (hi.val + 1 == v)
                {
                    bt = btUInt;
                    size = (i + 1) / 8;
                    break;
                }
            }
            PTS_ABORTIF(ptd, i > 64);
        }
    }
    else PTS_ABORTIF(ptd, 1);

    *dt = &symt_new_basic(ptd->module, bt, typename, size)->symt;
    return 0;
}

static inline int stabs_pts_read_method_info(struct ParseTypedefData* ptd)
{
    struct symt*        dt;
    char*               tmp;
    char                mthd;

    do
    {
        /* get type of return value */
        PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
        if (*ptd->ptr == ';') ptd->ptr++;

        /* get types of parameters */
        if (*ptd->ptr == ':')
        {
            PTS_ABORTIF(ptd, !(tmp = strchr(ptd->ptr + 1, ';')));
            ptd->ptr = tmp + 1;
        }
        PTS_ABORTIF(ptd, !(*ptd->ptr >= '0' && *ptd->ptr <= '9'));
        ptd->ptr++;
        PTS_ABORTIF(ptd, !(ptd->ptr[0] >= 'A' && *ptd->ptr <= 'D'));
        mthd = *++ptd->ptr;
        PTS_ABORTIF(ptd, mthd != '.' && mthd != '?' && mthd != '*');
        ptd->ptr++;
        if (mthd == '*')
        {
            long int            ofs;
            struct symt*        dt;

            PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &ofs) == -1);
            PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
            PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
            PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
        }
    } while (*ptd->ptr != ';');
    ptd->ptr++;

    return 0;
}

static inline int stabs_pts_read_aggregate(struct ParseTypedefData* ptd, 
                                           struct symt_udt* sdt)
{
    long        	sz, ofs;
    struct symt*        adt;
    struct symt*        dt = NULL;
    int			idx;
    int			doadd;

    PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &sz) == -1);

    doadd = symt_set_udt_size(ptd->module, sdt, sz);
    if (*ptd->ptr == '!') /* C++ inheritence */
    {
        long     num_classes;

        ptd->ptr++;
        PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &num_classes) == -1);
        PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
        while (--num_classes >= 0)
        {
            ptd->ptr += 2; /* skip visibility and inheritence */
            PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &ofs) == -1);
            PTS_ABORTIF(ptd, *ptd->ptr++ != ',');

            PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &adt) == -1);

            if (doadd)
            {
                char    tmp[256];
                WCHAR*  name;
630
                DWORD64 size;
631 632

                symt_get_info(adt, TI_GET_SYMNAME, &name);
633
                strcpy(tmp, "__inherited_class_");
634 635 636 637 638 639 640 641 642 643 644
                WideCharToMultiByte(CP_ACP, 0, name, -1, 
                                    tmp + strlen(tmp), sizeof(tmp) - strlen(tmp),
                                    NULL, NULL);
                HeapFree(GetProcessHeap(), 0, name);
                /* FIXME: TI_GET_LENGTH will not always work, especially when adt
                 * has just been seen as a forward definition and not the real stuff
                 * yet.
                 * As we don't use much the size of members in structs, this may not
                 * be much of a problem
                 */
                symt_get_info(adt, TI_GET_LENGTH, &size);
645
                symt_add_udt_element(ptd->module, sdt, tmp, adt, ofs, (DWORD)size * 8);
646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767
            }
            PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
        }
        
    }
    /* if the structure has already been filled, just redo the parsing
     * but don't store results into the struct
     * FIXME: there's a quite ugly memory leak in there...
     */

    /* Now parse the individual elements of the structure/union. */
    while (*ptd->ptr != ';') 
    {
	/* agg_name : type ',' <int:offset> ',' <int:size> */
	idx = ptd->idx;

        if (ptd->ptr[0] == '$' && ptd->ptr[1] == 'v')
        {
            long        x;

            if (ptd->ptr[2] == 'f')
            {
                /* C++ virtual method table */
                ptd->ptr += 3;
                stabs_read_type_enum(&ptd->ptr);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ':');
                PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
                PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &x) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
                ptd->idx = idx;
                continue;
            }
            else if (ptd->ptr[2] == 'b')
            {
                ptd->ptr += 3;
                PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ':');
                PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
                PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &x) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
                ptd->idx = idx;
                continue;
            }
        }

	PTS_ABORTIF(ptd, stabs_pts_read_id(ptd) == -1);
        /* Ref. TSDF R2.130 Section 7.4.  When the field name is a method name
         * it is followed by two colons rather than one.
         */
        if (*ptd->ptr == ':')
        {
            ptd->ptr++; 
            stabs_pts_read_method_info(ptd);
            ptd->idx = idx;
            continue;
        }
        else
        {
            /* skip C++ member protection /0 /1 or /2 */
            if (*ptd->ptr == '/') ptd->ptr += 2;
        }
	PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &adt) == -1);

        switch (*ptd->ptr++)
        {
        case ',':
            PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &ofs) == -1);
            PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
            PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &sz) == -1);
            PTS_ABORTIF(ptd, *ptd->ptr++ != ';');

            if (doadd) symt_add_udt_element(ptd->module, sdt, ptd->buf + idx, adt, ofs, sz);
            break;
        case ':':
            {
                char* tmp;
                /* method parameters... terminated by ';' */
                PTS_ABORTIF(ptd, !(tmp = strchr(ptd->ptr, ';')));
                ptd->ptr = tmp + 1;
            }
            break;
        default:
            PTS_ABORTIF(ptd, TRUE);
        }
	ptd->idx = idx;
    }
    PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
    if (*ptd->ptr == '~')
    {
        ptd->ptr++;
        PTS_ABORTIF(ptd, *ptd->ptr++ != '%');
        PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
        PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
    }
    return 0;
}

static inline int stabs_pts_read_enum(struct ParseTypedefData* ptd, 
                                      struct symt_enum* edt)
{
    long        value;
    int		idx;

    while (*ptd->ptr != ';')
    {
	idx = ptd->idx;
	PTS_ABORTIF(ptd, stabs_pts_read_id(ptd) == -1);
	PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &value) == -1);
	PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
	symt_add_enum_element(ptd->module, edt, ptd->buf + idx, value);
	ptd->idx = idx;
    }
    ptd->ptr++;
    return 0;
}

static inline int stabs_pts_read_array(struct ParseTypedefData* ptd,
                                       struct symt** adt)
{
    long                lo, hi;
768 769
    struct symt*        range_dt;
    struct symt*        base_dt;
770 771 772 773

    /* ar<typeinfo_nodef>;<int>;<int>;<typeinfo> */

    PTS_ABORTIF(ptd, *ptd->ptr++ != 'r');
774 775

    PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &range_dt) == -1);
776 777 778 779 780 781
    PTS_ABORTIF(ptd, *ptd->ptr++ != ';');	/* ';' */
    PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &lo) == -1);
    PTS_ABORTIF(ptd, *ptd->ptr++ != ';');	/* ';' */
    PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &hi) == -1);
    PTS_ABORTIF(ptd, *ptd->ptr++ != ';');	/* ';' */

782
    PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &base_dt) == -1);
783

784
    *adt = &symt_new_array(ptd->module, lo, hi, base_dt, range_dt)->symt;
785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851
    return 0;
}

static int stabs_pts_read_type_def(struct ParseTypedefData* ptd, const char* typename,
                                   struct symt** ret_dt)
{
    int			idx;
    long                sz = -1;
    struct symt*        new_dt = NULL; /* newly created data type */
    struct symt*        ref_dt;		   /* referenced data type (pointer...) */
    long		filenr1, subnr1, tmp;

    /* things are a bit complicated because of the way the typedefs are stored inside
     * the file, because addresses can change when realloc is done, so we must call
     * over and over stabs_find_ref() to keep the correct values around
     */
    PTS_ABORTIF(ptd, stabs_pts_read_type_reference(ptd, &filenr1, &subnr1) == -1);

    while (*ptd->ptr == '=')
    {
	ptd->ptr++;
	PTS_ABORTIF(ptd, new_dt != btNoType);

	/* first handle attribute if any */
	switch (*ptd->ptr)      
        {
	case '@':
	    if (*++ptd->ptr == 's')
            {
		ptd->ptr++;
		if (stabs_pts_read_number(ptd, &sz) == -1)
                {
		    ERR("Not an attribute... NIY\n");
		    ptd->ptr -= 2;
		    return -1;
		}
		PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
	    }
	    break;
	}
	/* then the real definitions */
	switch (*ptd->ptr++)
        {
	case '*':
        case '&':
	    PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref_dt) == -1);
	    new_dt = &symt_new_pointer(ptd->module, ref_dt)->symt;
           break;
        case 'k': /* 'const' modifier */
        case 'B': /* 'volatile' modifier */
            /* just kinda ignore the modifier, I guess -gmt */
            PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, typename, &new_dt) == -1);
	    break;
	case '(':
	    ptd->ptr--;
            PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, typename, &new_dt) == -1);
	    break;
	case 'a':
	    PTS_ABORTIF(ptd, stabs_pts_read_array(ptd, &new_dt) == -1);
	    break;
	case 'r':
	    PTS_ABORTIF(ptd, stabs_pts_read_range(ptd, typename, &new_dt) == -1);
	    assert(!*stabs_find_ref(filenr1, subnr1));
	    *stabs_find_ref(filenr1, subnr1) = new_dt;
	    break;
	case 'f':
	    PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref_dt) == -1);
852
	    new_dt = &symt_new_function_signature(ptd->module, ref_dt, -1)->symt;
853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874
	    break;
	case 'e':
	    new_dt = &symt_new_enum(ptd->module, typename)->symt;
	    PTS_ABORTIF(ptd, stabs_pts_read_enum(ptd, (struct symt_enum*)new_dt) == -1);
	    break;
	case 's':
	case 'u':
            {
                struct symt_udt*    udt;
                enum UdtKind kind = (ptd->ptr[-1] == 's') ? UdtStruct : UdtUnion;
                /* udt can have been already defined in a forward definition */
                udt = (struct symt_udt*)*stabs_find_ref(filenr1, subnr1);
                if (!udt)
                {
                    udt = symt_new_udt(ptd->module, typename, 0, kind);
                    /* we need to set it here, because a struct can hold a pointer
                     * to itself
                     */
                    new_dt = *stabs_find_ref(filenr1, subnr1) = &udt->symt;
                }
                else
                {
875
                    unsigned l1, l2;
876 877 878 879 880 881
                    if (udt->symt.tag != SymTagUDT)
                    {
                        ERR("Forward declaration (%p/%s) is not an aggregate (%u)\n",
                            udt, symt_get_name(&udt->symt), udt->symt.tag);
                        return -1;
                    }
882 883 884 885 886 887 888 889 890 891 892 893 894
                    /* FIXME: we currently don't correctly construct nested C++
                     * classes names. Therefore, we could be here with either:
                     * - typename and udt->hash_elt.name being the same string
                     *   (non embedded case)
                     * - typename being foo::bar while udt->hash_elt.name being 
                     *   just bar
                     * So, we twist the comparison to test both occurrences. When
                     * we have proper C++ types in this file, this twist has to be
                     * removed
                     */
                    l1 = strlen(udt->hash_elt.name);
                    l2 = strlen(typename);
                    if (l1 > l2 || strcmp(udt->hash_elt.name, typename + l2 - l1))
895 896
                        ERR("Forward declaration name mismatch %s <> %s\n",
                            udt->hash_elt.name, typename);
897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933
                    new_dt = &udt->symt;
                }
                PTS_ABORTIF(ptd, stabs_pts_read_aggregate(ptd, udt) == -1);
	    }
	    break;
	case 'x':
	    idx = ptd->idx;
            tmp = *ptd->ptr++;
	    PTS_ABORTIF(ptd, stabs_pts_read_id(ptd) == -1);
	    switch (tmp)
            {
	    case 'e':
                new_dt = &symt_new_enum(ptd->module, ptd->buf + idx)->symt;
                break;
	    case 's':
                new_dt = &symt_new_udt(ptd->module, ptd->buf + idx, 0, UdtStruct)->symt;
	        break;
            case 'u':
                new_dt = &symt_new_udt(ptd->module, ptd->buf + idx, 0, UdtUnion)->symt;
	        break;
	    default:
                return -1;
	    }
	    ptd->idx = idx;
	    break;
	case '-':
            {
                PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &tmp) == -1);
                PTS_ABORTIF(ptd, stabs_get_basic(ptd, tmp, &new_dt) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
            }
	    break;
        case '#':
            if (*ptd->ptr == '#')
            {
                ptd->ptr++;
                PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref_dt) == -1);
934
                new_dt = &symt_new_function_signature(ptd->module, ref_dt, -1)->symt;
935 936 937 938 939 940 941 942 943
            }
            else
            {
                struct symt*    cls_dt;
                struct symt*    pmt_dt;

                PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &cls_dt) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
                PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref_dt) == -1);
944
                new_dt = &symt_new_function_signature(ptd->module, ref_dt, -1)->symt;
945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012
                while (*ptd->ptr == ',')
                {
                    ptd->ptr++;
                    PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &pmt_dt) == -1);
                }
            }
            break;
        case 'R':
            {
                long    type, len, unk;
                int     basic;
                
                PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &type) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ';');	/* ';' */
                PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &len) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ';');	/* ';' */
                PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &unk) == -1);
                PTS_ABORTIF(ptd, *ptd->ptr++ != ';');	/* ';' */

                switch (type) /* see stabs_get_basic for the details */
                {
                case 1: basic = 12; break;
                case 2: basic = 13; break;
                case 3: basic = 25; break;
                case 4: basic = 26; break;
                case 5: basic = 35; break;
                case 6: basic = 14; break;
                default: PTS_ABORTIF(ptd, 1);
                }
                PTS_ABORTIF(ptd, stabs_get_basic(ptd, basic, &new_dt) == -1);
            }
            break;
	default:
	    ERR("Unknown type '%c'\n", ptd->ptr[-1]);
	    return -1;
	}
    }

    if (!new_dt)
    {
        /* is it a forward declaration that has been filled ? */
	new_dt = *stabs_find_ref(filenr1, subnr1);
        /* if not, this should be void (which is defined as a ref to itself, but we
         * don't correctly catch it)
         */
        if (!new_dt && typename)
        {
            new_dt = &symt_new_basic(ptd->module, btVoid, typename, 0)->symt;
            PTS_ABORTIF(ptd, strcmp(typename, "void"));
        }
    }            

    *stabs_find_ref(filenr1, subnr1) = *ret_dt = new_dt;

    TRACE("Adding (%ld,%ld) %s\n", filenr1, subnr1, typename);

    return 0;
}

static int stabs_parse_typedef(struct module* module, const char* ptr, 
                               const char* typename)
{
    struct ParseTypedefData	ptd;
    struct symt*                dt;
    int				ret = -1;

    /* check for already existing definition */

1013
    TRACE("%s => %s\n", typename, debugstr_a(ptr));
1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035
    ptd.module = module;
    ptd.idx = 0;
#ifdef PTS_DEBUG
    ptd.err_idx = 0;
#endif
    for (ptd.ptr = ptr - 1; ;)
    {
        ptd.ptr = strchr(ptd.ptr + 1, ':');
        if (ptd.ptr == NULL || *++ptd.ptr != ':') break;
    }
    if (ptd.ptr)
    {
	if (*ptd.ptr != '(') ptd.ptr++;
        /* most of type definitions take one char, except Tt */
	if (*ptd.ptr != '(') ptd.ptr++;
	ret = stabs_pts_read_type_def(&ptd, typename, &dt);
    }

    if (ret == -1 || *ptd.ptr) 
    {
#ifdef PTS_DEBUG
        int     i;
1036
	TRACE("Failure on %s\n", debugstr_a(ptr));
1037 1038 1039 1040 1041
        if (ret == -1)
        {
            for (i = 0; i < ptd.err_idx; i++)
            {
                TRACE("[%d]: line %d => %s\n", 
1042
                      i, ptd.errors[i].line, debugstr_a(ptd.errors[i].ptr));
1043 1044 1045
            }
        }
        else
1046
            TRACE("[0]: => %s\n", debugstr_a(ptd.ptr));
1047 1048
            
#else
1049
	ERR("Failure on %s at %s\n", debugstr_a(ptr), debugstr_a(ptd.ptr));
1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
#endif
	return FALSE;
    }

    return TRUE;
}

static struct symt* stabs_parse_type(const char* stab)
{
    const char* c = stab - 1;

    /*
     * Look through the stab definition, and figure out what struct symt
     * this represents.  If we have something we know about, assign the
     * type.
     * According to "The \"stabs\" debug format" (Rev 2.130) the name may be
     * a C++ name and contain double colons e.g. foo::bar::baz:t5=*6.
     */
    do
    {
        if ((c = strchr(c + 1, ':')) == NULL) return NULL;
    } while (*++c == ':');

    /*
     * The next characters say more about the type (i.e. data, function, etc)
     * of symbol.  Skip them.  (C++ for example may have Tt).
     * Actually this is a very weak description; I think Tt is the only
     * multiple combination we should see.
     */
    while (*c && *c != '(' && !isdigit(*c))
        c++;
    /*
     * The next is either an integer or a (integer,integer).
     * The stabs_read_type_enum() takes care that stab_types is large enough.
     */
    return *stabs_read_type_enum(&c);
}

struct pending_loc_var
{
    char                name[256];
    struct symt*        type;
1092
    enum DataKind       kind;
1093 1094 1095 1096
    unsigned            offset;
    unsigned            regno;
};

1097 1098 1099 1100 1101 1102 1103 1104
struct pending_block
{
    struct pending_loc_var*     vars;
    unsigned                    num;
    unsigned                    allocated;
};

static inline void pending_add(struct pending_block* pending, const char* name,
1105
                               enum DataKind dt, int regno, long offset)
1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119
{
    if (pending->num == pending->allocated)
    {
        pending->allocated += 8;
        if (!pending->vars)
            pending->vars = HeapAlloc(GetProcessHeap(), 0, 
                                     pending->allocated * sizeof(pending->vars[0]));
        else    
            pending->vars = HeapReAlloc(GetProcessHeap(), 0, pending->vars,
                                       pending->allocated * sizeof(pending->vars[0]));
    }
    stab_strcpy(pending->vars[pending->num].name, 
                sizeof(pending->vars[pending->num].name), name);
    pending->vars[pending->num].type   = stabs_parse_type(name);
1120
    pending->vars[pending->num].kind   = dt;
1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132
    pending->vars[pending->num].offset = offset;
    pending->vars[pending->num].regno  = regno;
    pending->num++;
}

static void pending_flush(struct pending_block* pending, struct module* module, 
                          struct symt_function* func, struct symt_block* block)
{
    int i;

    for (i = 0; i < pending->num; i++)
    {
1133 1134
        symt_add_func_local(module, func, 
                            pending->vars[i].kind, pending->vars[i].regno, 
1135 1136 1137 1138 1139 1140
                            pending->vars[i].offset, block,
                            pending->vars[i].type, pending->vars[i].name);
    }
    pending->num = 0;
}

1141 1142 1143 1144 1145 1146
/******************************************************************
 *		stabs_finalize_function
 *
 * Ends function creation: mainly:
 * - cleans up line number information
 * - tries to set up a debug-start tag (FIXME: heuristic to be enhanced)
1147 1148
 * - for stabs which have abolute address in them, initializes the size of the 
 *   function (assuming that current function ends where next function starts)
1149
 */
1150
static void stabs_finalize_function(struct module* module, struct symt_function* func,
1151
                                    unsigned long size)
1152 1153 1154 1155 1156 1157 1158 1159
{
    IMAGEHLP_LINE       il;
   
    if (!func) return;
    symt_normalize_function(module, func);
    /* To define the debug-start of the function, we use the second line number.
     * Not 100% bullet proof, but better than nothing
     */
1160
    if (symt_fill_func_line_info(module, func, func->address, &il) &&
1161 1162 1163
        symt_get_func_line_next(module, &il))
    {
        symt_add_function_point(module, func, SymTagFuncDebugStart, 
1164
                                il.Address - func->address, NULL);
1165
    }
1166
    if (size) func->size = size;
1167 1168
}

1169 1170 1171
BOOL stabs_parse(struct module* module, unsigned long load_offset, 
                 const void* pv_stab_ptr, int stablen,
                 const char* strs, int strtablen)
1172 1173 1174 1175
{
    struct symt_function*       curr_func = NULL;
    struct symt_block*          block = NULL;
    struct symt_compiland*      compiland = NULL;
1176
    char                        srcpath[PATH_MAX]; /* path to directory source file is in */
1177
    int                         i;
1178 1179 1180 1181
    int                         nstab;
    const char*                 ptr;
    char*                       stabbuff;
    unsigned int                stabbufflen;
1182
    const struct stab_nlist*    stab_ptr = pv_stab_ptr;
1183
    const char*                 strs_end;
1184 1185 1186 1187 1188
    int                         strtabinc;
    char                        symname[4096];
    unsigned                    incl[32];
    int                         incl_stk = -1;
    int                         source_idx = -1;
1189
    struct pending_block        pending;
1190
    BOOL                        ret = TRUE;
1191 1192

    nstab = stablen / sizeof(struct stab_nlist);
1193
    strs_end = strs + strtablen;
1194

1195
    memset(srcpath, 0, sizeof(srcpath));
1196
    memset(stabs_basic, 0, sizeof(stabs_basic));
1197
    memset(&pending, 0, sizeof(pending));
1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210

    /*
     * Allocate a buffer into which we can build stab strings for cases
     * where the stab is continued over multiple lines.
     */
    stabbufflen = 65536;
    stabbuff = HeapAlloc(GetProcessHeap(), 0, stabbufflen);

    strtabinc = 0;
    stabbuff[0] = '\0';
    for (i = 0; i < nstab; i++, stab_ptr++)
    {
        ptr = strs + stab_ptr->n_un.n_strx;
1211 1212 1213 1214 1215
        if ((ptr > strs_end) || (ptr + strlen(ptr) > strs_end))
        {
            WARN("Bad stabs string %p\n", ptr);
            continue;
        }
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237
        if (ptr[strlen(ptr) - 1] == '\\')
        {
            /*
             * Indicates continuation.  Append this to the buffer, and go onto the
             * next record.  Repeat the process until we find a stab without the
             * '/' character, as this indicates we have the whole thing.
             */
            unsigned    len = strlen(ptr);
            if (strlen(stabbuff) + len > stabbufflen)
            {
                stabbufflen += 65536;
                stabbuff = HeapReAlloc(GetProcessHeap(), 0, stabbuff, stabbufflen);
            }
            strncat(stabbuff, ptr, len - 1);
            continue;
        }
        else if (stabbuff[0] != '\0')
        {
            strcat(stabbuff, ptr);
            ptr = stabbuff;
        }

1238 1239
        /* only symbol entries contain a typedef */
        switch (stab_ptr->n_type)
1240
        {
1241 1242 1243 1244 1245 1246
        case N_GSYM:
        case N_LCSYM:
        case N_STSYM:
        case N_RSYM:
        case N_LSYM:
        case N_ROSYM:
1247
        case N_PSYM:
1248
            if (strchr(ptr, '=') != NULL)
1249
            {
1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265
                /*
                 * The stabs aren't in writable memory, so copy it over so we are
                 * sure we can scribble on it.
                 */
                if (ptr != stabbuff)
                {
                    strcpy(stabbuff, ptr);
                    ptr = stabbuff;
                }
                stab_strcpy(symname, sizeof(symname), ptr);
                if (!stabs_parse_typedef(module, ptr, symname))
                {
                    /* skip this definition */
                    stabbuff[0] = '\0';
                    continue;
                }
1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
            }
        }

#if 0
        const char* defs[] = {"","","","",                      /* 00 */
                              "","","","",                      /* 08 */
                              "","","","",                      /* 10 */
                              "","","","",                      /* 18 */
                              "gsym","","fun","stsym",          /* 20 */
                              "lcsym","main","rosym","",        /* 28 */
                              "","","","",                      /* 30 */
                              "","","opt","",                   /* 38 */
                              "rsym","","sline","",             /* 40 */
                              "","","","",                      /* 48 */
                              "","","","",                      /* 50 */
                              "","","","",                      /* 58 */
                              "","","so","",                    /* 60 */
                              "","","","",                      /* 68 */
                              "","","","",                      /* 70 */
                              "","","","",                      /* 78 */
                              "lsym","bincl","sol","",          /* 80 */
                              "","","","",                      /* 88 */
                              "","","","",                      /* 90 */
                              "","","","",                      /* 98 */
                              "psym","eincl","","",             /* a0 */
                              "","","","",                      /* a8 */
                              "","","","",                      /* b0 */
                              "","","","",                      /* b8 */
                              "lbrac","excl","","",             /* c0 */
                              "","","","",                      /* c8 */
                              "","","","",                      /* d0 */
                              "","","","",                      /* d8 */
                              "rbrac","","","",                 /* e0 */
        };

1301
        FIXME("Got %s<%u> %u/%ld (%s)\n", 
1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316
              defs[stab_ptr->n_type / 2], stab_ptr->n_type, stab_ptr->n_desc, stab_ptr->n_value, debugstr_a(ptr));
#endif

        switch (stab_ptr->n_type)
        {
        case N_GSYM:
            /*
             * These are useless with ELF.  They have no value, and you have to
             * read the normal symbol table to get the address.  Thus we
             * ignore them, and when we process the normal symbol table
             * we should do the right thing.
             *
             * With a.out or mingw, they actually do make some amount of sense.
             */
            stab_strcpy(symname, sizeof(symname), ptr);
1317
            symt_new_global_variable(module, compiland, symname, TRUE /* FIXME */,
1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330
                                     load_offset + stab_ptr->n_value, 0,
                                     stabs_parse_type(ptr));
            break;
        case N_LCSYM:
        case N_STSYM:
            /* These are static symbols and BSS symbols. */
            stab_strcpy(symname, sizeof(symname), ptr);
            symt_new_global_variable(module, compiland, symname, TRUE /* FIXME */,
                                     load_offset + stab_ptr->n_value, 0,
                                     stabs_parse_type(ptr));
            break;
        case N_LBRAC:
            block = symt_open_func_block(module, curr_func, block,
1331
                                         stab_ptr->n_value, 0);
1332
            pending_flush(&pending, module, curr_func, block);
1333 1334 1335 1336 1337 1338 1339 1340 1341
            break;
        case N_RBRAC:
            block = symt_close_func_block(module, curr_func, block,
                                          stab_ptr->n_value);
            break;
        case N_PSYM:
            /* These are function parameters. */
            if (curr_func != NULL)
            {
1342
                struct symt*    param_type = stabs_parse_type(ptr);
1343
                stab_strcpy(symname, sizeof(symname), ptr);
1344 1345 1346
                symt_add_func_local(module, curr_func,
                                    stab_ptr->n_value > 0 ? DataIsParam : DataIsLocal,
                                    0, stab_ptr->n_value, NULL, param_type, symname);
1347 1348 1349
                symt_add_function_signature_parameter(module, 
                                                      (struct symt_function_signature*)curr_func->type, 
                                                      param_type);
1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381
            }
            break;
        case N_RSYM:
            /* These are registers (as local variables) */
            if (curr_func != NULL)
            {
                unsigned reg;

                switch (stab_ptr->n_value)
                {
                case  0: reg = CV_REG_EAX; break;
                case  1: reg = CV_REG_ECX; break;
                case  2: reg = CV_REG_EDX; break;
                case  3: reg = CV_REG_EBX; break;
                case  4: reg = CV_REG_ESP; break;
                case  5: reg = CV_REG_EBP; break;
                case  6: reg = CV_REG_ESI; break;
                case  7: reg = CV_REG_EDI; break;
                case 11:
                case 12:
                case 13:
                case 14:
                case 15:
                case 16:
                case 17:
                case 18:
                case 19: reg = CV_REG_ST0 + stab_ptr->n_value - 12; break;
                default:
                    FIXME("Unknown register value (%lu)\n", stab_ptr->n_value);
                    reg = CV_REG_NONE;
                    break;
                }
1382 1383 1384 1385 1386
                stab_strcpy(symname, sizeof(symname), ptr);
                if (ptr[strlen(symname) + 1] == 'P')
                {
                    struct symt*    param_type = stabs_parse_type(ptr);
                    stab_strcpy(symname, sizeof(symname), ptr);
1387
                    symt_add_func_local(module, curr_func, DataIsParam, reg, 0,
1388 1389 1390 1391 1392 1393
                                        NULL, param_type, symname);
                    symt_add_function_signature_parameter(module, 
                                                          (struct symt_function_signature*)curr_func->type, 
                                                          param_type);
                }
                else
1394
                    pending_add(&pending, ptr, DataIsLocal, reg, 0);
1395 1396 1397 1398
            }
            break;
        case N_LSYM:
            /* These are local variables */
1399
            if (curr_func != NULL) pending_add(&pending, ptr, DataIsLocal, 0, stab_ptr->n_value);
1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428
            break;
        case N_SLINE:
            /*
             * This is a line number.  These are always relative to the start
             * of the function (N_FUN), and this makes the lookup easier.
             */
            if (curr_func != NULL)
            {
                assert(source_idx >= 0);
                symt_add_func_line(module, curr_func, source_idx, 
                                   stab_ptr->n_desc, stab_ptr->n_value);
            }
            break;
        case N_FUN:
            /*
             * For now, just declare the various functions.  Later
             * on, we will add the line number information and the
             * local symbols.
             */
            /*
             * Copy the string to a temp buffer so we
             * can kill everything after the ':'.  We do
             * it this way because otherwise we end up dirtying
             * all of the pages related to the stabs, and that
             * sucks up swap space like crazy.
             */
            stab_strcpy(symname, sizeof(symname), ptr);
            if (*symname)
            {
1429
                struct symt_function_signature* func_type;
1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440

                if (curr_func)
                {
                    /* First, clean up the previous function we were working on.
                     * Assume size of the func is the delta between current offset
                     * and offset of last function
                     */
                    stabs_finalize_function(module, curr_func, 
                                            stab_ptr->n_value ?
                                                (load_offset + stab_ptr->n_value - curr_func->address) : 0);
                }
1441
                func_type = symt_new_function_signature(module, 
1442
                                                        stabs_parse_type(ptr), -1);
1443 1444
                curr_func = symt_new_function(module, compiland, symname, 
                                              load_offset + stab_ptr->n_value, 0,
1445
                                              &func_type->symt);
1446 1447 1448
            }
            else
            {
1449 1450 1451 1452
                /* some versions of GCC to use a N_FUN "" to mark the end of a function
                 * and n_value contains the size of the func
                 */
                stabs_finalize_function(module, curr_func, stab_ptr->n_value);
1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463
                curr_func = NULL;
            }
            break;
        case N_SO:
            /*
             * This indicates a new source file.  Append the records
             * together, to build the correct path name.
             */
            if (*ptr == '\0') /* end of N_SO file */
            {
                /* Nuke old path. */
1464
                srcpath[0] = '\0';
1465
                stabs_finalize_function(module, curr_func, 0);
1466 1467 1468 1469 1470 1471 1472 1473
                curr_func = NULL;
                source_idx = -1;
                incl_stk = -1;
                assert(block == NULL);
                compiland = NULL;
            }
            else
            {
1474 1475
                int len = strlen(ptr);
                if (ptr[len-1] != '/')
1476
                {
1477
                    stabs_reset_includes();
1478 1479
                    source_idx = source_new(module, srcpath, ptr);
                    compiland = symt_new_compiland(module, source_idx);
1480
                }
1481
                else
1482
                    strcpy(srcpath, ptr);
1483 1484 1485
            }
            break;
        case N_SOL:
1486
            source_idx = source_new(module, srcpath, ptr);
1487 1488 1489 1490
            break;
        case N_UNDF:
            strs += strtabinc;
            strtabinc = stab_ptr->n_value;
1491
            /* I'm not sure this is needed, so trace it before we obsolete it */
1492 1493 1494 1495 1496 1497
            if (curr_func)
            {
                FIXME("UNDF: curr_func %s\n", curr_func->hash_elt.name);
                stabs_finalize_function(module, curr_func, 0); /* FIXME */
                curr_func = NULL;
            }
1498 1499 1500 1501 1502 1503 1504
            break;
        case N_OPT:
            /* Ignore this. We don't care what it points to. */
            break;
        case N_BINCL:
            stabs_add_include(stabs_new_include(ptr, stab_ptr->n_value));
            assert(incl_stk < (int)(sizeof(incl) / sizeof(incl[0])) - 1);
1505
            incl[++incl_stk] = source_idx;
1506
            source_idx = source_new(module, NULL, ptr);
1507 1508
            break;
        case N_EINCL:
1509 1510
            assert(incl_stk >= 0);
            source_idx = incl[incl_stk--];
1511 1512
            break;
	case N_EXCL:
1513 1514 1515 1516
            if (stabs_add_include(stabs_find_include(ptr, stab_ptr->n_value)) < 0)
            {
                ERR("Excluded header not found (%s,%ld)\n", ptr, stab_ptr->n_value);
                module_reset_debug_info(module);
1517
                ret = FALSE;
1518 1519
                goto done;
            }
1520 1521 1522 1523
            break;
        case N_MAIN:
            /* Always ignore these. GCC doesn't even generate them. */
            break;
1524 1525 1526 1527
        case N_BNSYM:
        case N_ENSYM:
            /* Always ignore these, they seem to be used only on Darwin. */
            break;
1528 1529 1530 1531 1532 1533
        default:
            ERR("Unknown stab type 0x%02x\n", stab_ptr->n_type);
            break;
        }
        stabbuff[0] = '\0';
        TRACE("0x%02x %lx %s\n", 
1534
              stab_ptr->n_type, stab_ptr->n_value, debugstr_a(strs + stab_ptr->n_un.n_strx));
1535
    }
1536
    module->module.SymType = SymDia;
Eric Pouech's avatar
Eric Pouech committed
1537 1538 1539 1540 1541 1542 1543
    module->module.CVSig = 'S' | ('T' << 8) | ('A' << 16) | ('B' << 24);
    /* FIXME: we could have a finer grain here */
    module->module.LineNumbers = TRUE;
    module->module.GlobalSymbols = TRUE;
    module->module.TypeInfo = TRUE;
    module->module.SourceIndexed = TRUE;
    module->module.Publics = TRUE;
1544
done:
1545 1546
    HeapFree(GetProcessHeap(), 0, stabbuff);
    stabs_free_includes();
1547
    HeapFree(GetProcessHeap(), 0, pending.vars);
1548

1549
    return ret;
1550
}