/* -*- tab-width: 8; c-basic-offset: 4 -*- */ /* * File stabs.c - read stabs information from the wine executable itself. * * Copyright (C) 1996, Eric Youngdale. * 1999-2003 Eric Pouech * * 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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * * 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 #include #include #ifdef HAVE_SYS_MMAN_H #include #endif #include #include #include #ifdef HAVE_UNISTD_H # include #endif #include #ifndef PATH_MAX #define PATH_MAX MAX_PATH #endif #include "debugger.h" #if defined(__svr4__) || defined(__sun) #define __ELF__ #endif #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(winedbg_stabs); #ifndef N_UNDF #define N_UNDF 0x00 #endif #ifndef STN_UNDEF # define STN_UNDEF 0 #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 #define N_OPT 0x3c #define N_RSYM 0x40 #define N_SLINE 0x44 #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) { /* * A strcpy routine that stops when we hit the ':' character. * Faster than copying the whole thing, and then nuking the * ':'. */ while(*source != '\0' && *source != ':' && sz-- > 0) *dest++ = *source++; *dest = '\0'; assert(sz > 0); } typedef struct { char* name; unsigned long value; int idx; struct datatype** 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 datatype** cu_vector = NULL; static int cu_nrofentries = 0; static int DEBUG_CreateInclude(const char* file, unsigned long val) { if (num_include_def == num_alloc_include_def) { num_alloc_include_def += 256; include_defs = DBG_realloc(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 = DBG_strdup(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 DEBUG_FindInclude(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 DEBUG_AddInclude(int idx) { ++cu_include_stk_idx; /* is this happen, 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 DEBUG_ResetIncludes(void) { /* * The datatypes 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 DEBUG_FreeIncludes(void) { int i; DEBUG_ResetIncludes(); for (i = 0; i < num_include_def; i++) { DBG_free(include_defs[i].name); DBG_free(include_defs[i].vector); } DBG_free(include_defs); include_defs = NULL; num_include_def = 0; num_alloc_include_def = 0; DBG_free(cu_vector); cu_vector = NULL; cu_nrofentries = 0; } static struct datatype** DEBUG_FileSubNr2StabEnum(int filenr, int subnr) { struct datatype** ret; WINE_TRACE("creating type id for (%d,%d)\n", filenr, subnr); /* 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) { cu_vector = DBG_realloc(cu_vector, sizeof(cu_vector[0])*(subnr+1)); memset(cu_vector+cu_nrofentries, 0, sizeof(cu_vector[0])*(subnr+1-cu_nrofentries)); 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) { idef->vector = DBG_realloc(idef->vector, sizeof(idef->vector[0])*(subnr+1)); memset(idef->vector + idef->nrofentries, 0, sizeof(idef->vector[0])*(subnr+1-idef->nrofentries)); idef->nrofentries = subnr + 1; } ret = &idef->vector[subnr]; } WINE_TRACE("(%d,%d) is %p\n",filenr,subnr,ret); return ret; } static struct datatype** DEBUG_ReadTypeEnum(LPCSTR *x) { int filenr,subnr; if (**x=='(') { (*x)++; /* '(' */ filenr=strtol(*x,(char**)x,10); /* */ (*x)++; /* ',' */ subnr=strtol(*x,(char**)x,10); /* */ (*x)++; /* ')' */ } else { filenr = 0; subnr = strtol(*x,(char**)x,10); /* */ } return DEBUG_FileSubNr2StabEnum(filenr,subnr); } /*#define PTS_DEBUG*/ struct ParseTypedefData { const char* ptr; char buf[1024]; int idx; #ifdef PTS_DEBUG struct PTS_Error { char* ptr; unsigned line; } errors[16]; int err_idx; #endif }; #ifdef PTS_DEBUG static void 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) { PTS_Push((ptd), __LINE__); return -1;} } while (0) #else #define PTS_ABORTIF(ptd, t) do { if (t) return -1; } while (0) #endif static int DEBUG_PTS_ReadTypedef(struct ParseTypedefData* ptd, const char* typename, struct datatype** dt); static int DEBUG_PTS_ReadID(struct ParseTypedefData* ptd) { const char* first = ptd->ptr; unsigned int len; PTS_ABORTIF(ptd, (ptd->ptr = strchr(ptd->ptr, ':')) == NULL); len = ptd->ptr - first; 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; ptd->ptr++; /* ':' */ return 0; } static int DEBUG_PTS_ReadNum(struct ParseTypedefData* ptd, int* v) { char* last; *v = strtol(ptd->ptr, &last, 10); PTS_ABORTIF(ptd, last == ptd->ptr); ptd->ptr = last; return 0; } static int DEBUG_PTS_ReadTypeReference(struct ParseTypedefData* ptd, int* filenr, int* subnr) { if (*ptd->ptr == '(') { /* '(' ',' ')' */ ptd->ptr++; PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, filenr) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ','); PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, subnr) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ')'); } else { *filenr = 0; PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, subnr) == -1); } return 0; } static int DEBUG_PTS_ReadRange(struct ParseTypedefData* ptd, struct datatype** dt, int* lo, int* hi) { /* type ';' ';' ';' */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, dt) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, lo) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, hi) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */ return 0; } static inline int DEBUG_PTS_ReadMethodInfo(struct ParseTypedefData* ptd) { struct datatype* dt; char* tmp; char mthd; do { /* get type of return value */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(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 == '*') { int ofs; struct datatype* dt; PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &ofs) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &dt) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); } } while (*ptd->ptr != ';'); ptd->ptr++; return 0; } static inline int DEBUG_PTS_ReadAggregate(struct ParseTypedefData* ptd, struct datatype* sdt) { int sz, ofs; struct datatype* adt; struct datatype* dt = NULL; int idx; int doadd; PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &sz) == -1); doadd = DEBUG_SetStructSize(sdt, sz); if (*ptd->ptr == '!') /* C++ inheritence */ { int num_classes; char tmp[256]; ptd->ptr++; PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &num_classes) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ','); while (--num_classes >= 0) { ptd->ptr += 2; /* skip visibility and inheritence */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &ofs) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ','); PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &adt) == -1); snprintf(tmp, sizeof(tmp), "__inherited_class_%s", DEBUG_GetName(adt)); /* FIXME: DEBUG_GetObjectSize 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 */ if (doadd) DEBUG_AddStructElement(sdt, tmp, adt, ofs, DEBUG_GetObjectSize(adt) * 8); 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 ',' ',' */ idx = ptd->idx; if (ptd->ptr[0] == '$' && ptd->ptr[1] == 'v') { int x; if (ptd->ptr[2] == 'f') { /* C++ virtual method table */ ptd->ptr += 3; DEBUG_ReadTypeEnum(&ptd->ptr); PTS_ABORTIF(ptd, *ptd->ptr++ != ':'); PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &dt) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ','); PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &x) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); ptd->idx = idx; continue; } else if (ptd->ptr[2] == 'b') { ptd->ptr += 3; PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &dt) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ':'); PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &dt) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ','); PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &x) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); ptd->idx = idx; continue; } } PTS_ABORTIF(ptd, DEBUG_PTS_ReadID(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++; DEBUG_PTS_ReadMethodInfo(ptd); ptd->idx = idx; continue; } else { /* skip C++ member protection /0 /1 or /2 */ if (*ptd->ptr == '/') ptd->ptr += 2; } PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &adt) == -1); switch (*ptd->ptr++) { case ',': PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &ofs) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ','); PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &sz) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); if (doadd) DEBUG_AddStructElement(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, DEBUG_PTS_ReadTypedef(ptd, NULL, &dt) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); } return 0; } static inline int DEBUG_PTS_ReadEnum(struct ParseTypedefData* ptd, struct datatype* edt) { int ofs; int idx; while (*ptd->ptr != ';') { idx = ptd->idx; PTS_ABORTIF(ptd, DEBUG_PTS_ReadID(ptd) == -1); PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &ofs) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ','); DEBUG_AddStructElement(edt, ptd->buf + idx, NULL, ofs, 0); ptd->idx = idx; } ptd->ptr++; return 0; } static inline int DEBUG_PTS_ReadArray(struct ParseTypedefData* ptd, struct datatype* adt) { int lo, hi; struct datatype* rdt; /* ar;;; */ PTS_ABORTIF(ptd, *ptd->ptr++ != 'r'); /* FIXME: range type is lost, always assume int */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadRange(ptd, &rdt, &lo, &hi) == -1); PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &rdt) == -1); DEBUG_SetArrayParams(adt, lo, hi, rdt); return 0; } static int DEBUG_PTS_ReadTypedef(struct ParseTypedefData* ptd, const char* typename, struct datatype** ret_dt) { int idx, lo, hi, sz = -1; struct datatype* new_dt = NULL; /* newly created data type */ struct datatype* ref_dt; /* referenced data type (pointer...) */ struct datatype* dt1; /* intermediate data type (scope is limited) */ struct datatype* dt2; /* intermediate data type: t1=t2=new_dt */ int filenr1, subnr1; /* things are a bit complicated because of the way the typedefs are stored inside * the file (we cannot keep the struct datatype** around, because address can * change when realloc is done, so we must call over and over * DEBUG_FileSubNr2StabEnum to keep the correct values around * (however, keeping struct datatype* is valid)) */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypeReference(ptd, &filenr1, &subnr1) == -1); while (*ptd->ptr == '=') { ptd->ptr++; PTS_ABORTIF(ptd, new_dt != NULL); /* first handle attribute if any */ switch (*ptd->ptr) { case '@': if (*++ptd->ptr == 's') { ptd->ptr++; if (DEBUG_PTS_ReadNum(ptd, &sz) == -1) { WINE_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 '&': new_dt = DEBUG_NewDataType(DT_POINTER, NULL); PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &ref_dt) == -1); DEBUG_SetPointerType(new_dt, ref_dt); break; case 'k': /* 'const' modifier */ case 'B': /* 'volatile' modifier */ /* just kinda ignore the modifier, I guess -gmt */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, typename, &new_dt) == -1); break; case '(': ptd->ptr--; PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, typename, &new_dt) == -1); break; case 'a': new_dt = DEBUG_NewDataType(DT_ARRAY, NULL); PTS_ABORTIF(ptd, DEBUG_PTS_ReadArray(ptd, new_dt) == -1); break; case 'r': new_dt = DEBUG_NewDataType(DT_BASIC, typename); assert(!*DEBUG_FileSubNr2StabEnum(filenr1, subnr1)); *DEBUG_FileSubNr2StabEnum(filenr1, subnr1) = new_dt; PTS_ABORTIF(ptd, DEBUG_PTS_ReadRange(ptd, &ref_dt, &lo, &hi) == -1); /* should perhaps do more here... */ break; case 'f': new_dt = DEBUG_NewDataType(DT_FUNC, NULL); PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &ref_dt) == -1); DEBUG_SetPointerType(new_dt, ref_dt); break; case 'e': new_dt = DEBUG_NewDataType(DT_ENUM, NULL); PTS_ABORTIF(ptd, DEBUG_PTS_ReadEnum(ptd, new_dt) == -1); break; case 's': case 'u': /* dt1 can have been already defined in a forward definition */ dt1 = *DEBUG_FileSubNr2StabEnum(filenr1, subnr1); dt2 = DEBUG_TypeCast(DT_STRUCT, typename); if (!dt1) { new_dt = DEBUG_NewDataType(DT_STRUCT, typename); /* we need to set it here, because a struct can hold a pointer * to itself */ *DEBUG_FileSubNr2StabEnum(filenr1, subnr1) = new_dt; } else { if (DEBUG_GetType(dt1) != DT_STRUCT) { WINE_ERR("Forward declaration is not an aggregate\n"); return -1; } /* should check typename is the same too */ new_dt = dt1; } PTS_ABORTIF(ptd, DEBUG_PTS_ReadAggregate(ptd, new_dt) == -1); break; case 'x': switch (*ptd->ptr++) { case 'e': lo = DT_ENUM; break; case 's': case 'u': lo = DT_STRUCT; break; default: return -1; } idx = ptd->idx; PTS_ABORTIF(ptd, DEBUG_PTS_ReadID(ptd) == -1); new_dt = DEBUG_NewDataType(lo, ptd->buf + idx); ptd->idx = idx; break; case '-': { enum debug_type_basic basic = DT_BASIC_LAST; PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &lo) == -1); switch (lo) { case 1: basic = DT_BASIC_INT; break; case 2: basic = DT_BASIC_CHAR; break; case 3: basic = DT_BASIC_SHORTINT; break; case 4: basic = DT_BASIC_LONGINT; break; case 5: basic = DT_BASIC_UCHAR; break; case 6: basic = DT_BASIC_SCHAR; break; case 7: basic = DT_BASIC_USHORTINT; break; case 8: basic = DT_BASIC_UINT; break; /* case 9: basic = DT_BASIC_UINT"; */ case 10: basic = DT_BASIC_ULONGINT; break; case 11: basic = DT_BASIC_VOID; break; case 12: basic = DT_BASIC_FLOAT; break; case 13: basic = DT_BASIC_DOUBLE; break; case 14: basic = DT_BASIC_LONGDOUBLE; break; /* case 15: basic = DT_BASIC_INT; break; */ case 16: switch (sz) { case 32: basic = DT_BASIC_BOOL1; break; case 16: basic = DT_BASIC_BOOL2; break; case 8: basic = DT_BASIC_BOOL4; break; } break; /* case 17: basic = DT_BASIC_SHORT real; break; */ /* case 18: basic = DT_BASIC_REAL; break; */ case 25: basic = DT_BASIC_CMPLX_FLOAT; break; case 26: basic = DT_BASIC_CMPLX_DOUBLE; break; /* case 30: basic = DT_BASIC_wchar"; break; */ case 31: basic = DT_BASIC_LONGLONGINT; break; case 32: basic = DT_BASIC_ULONGLONGINT; break; default: PTS_ABORTIF(ptd, 1); } PTS_ABORTIF(ptd, !(new_dt = DEBUG_GetBasicType(basic))); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); } break; case '#': new_dt = DEBUG_NewDataType(DT_FUNC, NULL); if (*ptd->ptr == '#') { ptd->ptr++; PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &ref_dt) == -1); DEBUG_SetPointerType(new_dt, ref_dt); } else { struct datatype* cls_dt; struct datatype* pmt_dt; PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &cls_dt) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ','); PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &ref_dt) == -1); DEBUG_SetPointerType(new_dt, ref_dt); while (*ptd->ptr == ',') { ptd->ptr++; PTS_ABORTIF(ptd, DEBUG_PTS_ReadTypedef(ptd, NULL, &pmt_dt) == -1); } } break; case 'R': { enum debug_type_basic basic = DT_BASIC_LAST; int type, len, unk; PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &type) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &len) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */ PTS_ABORTIF(ptd, DEBUG_PTS_ReadNum(ptd, &unk) == -1); PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */ switch (type) { case 1: basic = DT_BASIC_FLOAT; break; case 2: basic = DT_BASIC_DOUBLE; break; case 3: basic = DT_BASIC_CMPLX_FLOAT; break; case 4: basic = DT_BASIC_CMPLX_DOUBLE; break; case 5: basic = DT_BASIC_CMPLX_LONGDOUBLE; break; case 6: basic = DT_BASIC_LONGDOUBLE; break; default: PTS_ABORTIF(ptd, 1); } PTS_ABORTIF(ptd, !(new_dt = DEBUG_GetBasicType(basic))); } break; default: WINE_ERR("Unknown type '%c'\n", ptd->ptr[-1]); return -1; } } if (!new_dt) { /* is it a forward declaration that has been filled ? */ new_dt = *DEBUG_FileSubNr2StabEnum(filenr1, subnr1); /* if not, this should then be a basic type: define it, or even void */ if (!new_dt) new_dt = DEBUG_NewDataType(DT_BASIC, typename); } *DEBUG_FileSubNr2StabEnum(filenr1, subnr1) = *ret_dt = new_dt; if (typename && WINE_TRACE_ON(winedbg_stabs)) { DEBUG_Printf("Adding (%d,%d) %s => ", filenr1, subnr1, typename); DEBUG_PrintTypeCast(new_dt); DEBUG_Printf("\n"); } return 0; } static int DEBUG_ParseTypedefStab(const char* ptr, const char* typename) { struct ParseTypedefData ptd; struct datatype* dt; int ret = -1; /* check for already existing definition */ 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 = DEBUG_PTS_ReadTypedef(&ptd, typename, &dt); } if (ret == -1 || *ptd.ptr) { #ifdef PTS_DEBUG int i; WINE_TRACE("Failure on %s\n", ptr); if (ret == -1) { for (i = 0; i < ptd.err_idx; i++) { WINE_TRACE("[%d]: line %d => %s\n", i, ptd.errors[i].line, ptd.errors[i].ptr); } } else WINE_TRACE("[0]: => %s\n", ptd.ptr); #else WINE_ERR("Failure on %s at %s\n", ptr, ptd.ptr); #endif return FALSE; } return TRUE; } static struct datatype* DEBUG_ParseStabType(const char* stab) { const char* c = stab - 1; /* * Look through the stab definition, and figure out what datatype * 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 DEBUG_ReadTypeEnum takes care that stab_types is large enough. */ return *DEBUG_ReadTypeEnum(&c); } enum DbgInfoLoad DEBUG_ParseStabs(const char* addr, void* load_offset, unsigned int staboff, int stablen, unsigned int strtaboff, int strtablen) { struct name_hash* curr_func = NULL; struct wine_locals* curr_loc = NULL; struct name_hash* curr_sym = NULL; char currpath[PATH_MAX]; int i; int in_external_file = FALSE; int last_nso = -1; unsigned int len; DBG_VALUE new_value; int nstab; const char* ptr; char* stabbuff; unsigned int stabbufflen; const struct stab_nlist* stab_ptr; const char* strs; int strtabinc; const char* subpath = NULL; char symname[4096]; nstab = stablen / sizeof(struct stab_nlist); stab_ptr = (struct stab_nlist *) (addr + staboff); strs = (char *) (addr + strtaboff); memset(currpath, 0, sizeof(currpath)); /* * Allocate a buffer into which we can build stab strings for cases * where the stab is continued over multiple lines. */ stabbufflen = 65536; stabbuff = (char *) DBG_alloc(stabbufflen); strtabinc = 0; stabbuff[0] = '\0'; for (i = 0; i < nstab; i++, stab_ptr++) { ptr = strs + (unsigned int) stab_ptr->n_un.n_name; 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. */ len = strlen(ptr); if( strlen(stabbuff) + len > stabbufflen ) { stabbufflen += 65536; stabbuff = (char *) DBG_realloc(stabbuff, stabbufflen); } strncat(stabbuff, ptr, len - 1); continue; } else if( stabbuff[0] != '\0' ) { strcat( stabbuff, ptr); ptr = stabbuff; } if( strchr(ptr, '=') != NULL ) { /* * 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 (!DEBUG_ParseTypedefStab(ptr, symname)) { /* skip this definition */ stabbuff[0] = '\0'; continue; } } 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. */ new_value.type = DEBUG_ParseStabType(ptr); new_value.addr.seg = 0; new_value.cookie = DV_TARGET; stab_strcpy(symname, sizeof(symname), ptr); #ifdef __ELF__ /* EPP used to be: new_value.addr.off = 0; */ new_value.addr.off = (unsigned long)load_offset + stab_ptr->n_value; curr_sym = DEBUG_AddSymbol( symname, &new_value, currpath, SYM_WINE | SYM_DATA | SYM_INVALID ); #else new_value.addr.off = (unsigned long)load_offset + stab_ptr->n_value; curr_sym = DEBUG_AddSymbol( symname, &new_value, currpath, SYM_WINE | SYM_DATA ); #endif break; case N_RBRAC: case N_LBRAC: /* * We need to keep track of these so we get symbol scoping * right for local variables. For now, we just ignore them. * The hooks are already there for dealing with this however, * so all we need to do is to keep count of the nesting level, * and find the RBRAC for each matching LBRAC. */ break; case N_LCSYM: case N_STSYM: /* * These are static symbols and BSS symbols. */ new_value.addr.seg = 0; new_value.type = DEBUG_ParseStabType(ptr); new_value.addr.off = (unsigned long)load_offset + stab_ptr->n_value; new_value.cookie = DV_TARGET; stab_strcpy(symname, sizeof(symname), ptr); curr_sym = DEBUG_AddSymbol( symname, &new_value, currpath, SYM_WINE | SYM_DATA ); break; case N_PSYM: /* * These are function parameters. */ if( curr_func != NULL && !in_external_file ) { stab_strcpy(symname, sizeof(symname), ptr); curr_loc = DEBUG_AddLocal( curr_func, 0, stab_ptr->n_value, 0, 0, symname ); DEBUG_SetLocalSymbolType( curr_loc, DEBUG_ParseStabType(ptr) ); } break; case N_RSYM: if( curr_func != NULL && !in_external_file ) { stab_strcpy(symname, sizeof(symname), ptr); curr_loc = DEBUG_AddLocal( curr_func, stab_ptr->n_value + 1, 0, 0, 0, symname ); DEBUG_SetLocalSymbolType( curr_loc, DEBUG_ParseStabType(ptr) ); } break; case N_LSYM: if( curr_func != NULL && !in_external_file ) { stab_strcpy(symname, sizeof(symname), ptr); curr_loc = DEBUG_AddLocal( curr_func, 0, stab_ptr->n_value, 0, 0, symname ); DEBUG_SetLocalSymbolType( curr_loc, DEBUG_ParseStabType(ptr) ); } 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 && !in_external_file ) { #ifdef __ELF__ DEBUG_AddLineNumber(curr_func, stab_ptr->n_desc, stab_ptr->n_value); #else #if 0 /* * This isn't right. The order of the stabs is different under * a.out, and as a result we would end up attaching the line * number to the wrong function. */ DEBUG_AddLineNumber(curr_func, stab_ptr->n_desc, stab_ptr->n_value - curr_func->addr.off); #endif #endif } break; case N_FUN: /* * First, clean up the previous function we were working on. */ DEBUG_Normalize(curr_func); /* * For now, just declare the various functions. Later * on, we will add the line number information and the * local symbols. */ if( !in_external_file) { stab_strcpy(symname, sizeof(symname), ptr); if (*symname) { new_value.addr.seg = 0; new_value.type = DEBUG_ParseStabType(ptr); new_value.addr.off = (unsigned long)load_offset + stab_ptr->n_value; new_value.cookie = DV_TARGET; /* * 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. */ #ifdef __ELF__ curr_func = DEBUG_AddSymbol( symname, &new_value, currpath, SYM_WINE | SYM_FUNC | SYM_INVALID ); #else curr_func = DEBUG_AddSymbol( symname, &new_value, currpath, SYM_WINE | SYM_FUNC ); #endif } else { /* some GCC seem to use a N_FUN "" to mark the end of a function */ curr_func = NULL; } } else { /* * Don't add line number information for this function * any more. */ curr_func = NULL; } break; case N_SO: /* * This indicates a new source file. Append the records * together, to build the correct path name. */ #ifndef __ELF__ /* * With a.out, there is no NULL string N_SO entry at the end of * the file. Thus when we find non-consecutive entries, * we consider that a new file is started. */ if( last_nso < i-1 ) { currpath[0] = '\0'; DEBUG_Normalize(curr_func); curr_func = NULL; } #endif if( *ptr == '\0' ) /* end of N_SO file */ { /* * Nuke old path. */ currpath[0] = '\0'; DEBUG_Normalize(curr_func); curr_func = NULL; } else { if (*ptr != '/') strcat(currpath, ptr); else strcpy(currpath, ptr); subpath = ptr; DEBUG_ResetIncludes(); } last_nso = i; break; case N_SOL: /* * This indicates we are including stuff from an include file. * If this is the main source, enable the debug stuff, otherwise * ignore it. */ in_external_file = !(subpath == NULL || strcmp(ptr, subpath) == 0); in_external_file = FALSE; /* FIXME EPP hack FIXME */; break; case N_UNDF: strs += strtabinc; strtabinc = stab_ptr->n_value; DEBUG_Normalize(curr_func); curr_func = NULL; break; case N_OPT: /* * Ignore this. We don't care what it points to. */ break; case N_BINCL: DEBUG_AddInclude(DEBUG_CreateInclude(ptr, stab_ptr->n_value)); break; case N_EINCL: break; case N_EXCL: DEBUG_AddInclude(DEBUG_FindInclude(ptr, stab_ptr->n_value)); break; case N_MAIN: /* * Always ignore these. GCC doesn't even generate them. */ break; default: WINE_ERR("Unknown stab type 0x%02x\n", stab_ptr->n_type); break; } stabbuff[0] = '\0'; WINE_TRACE("0x%02x %x %s\n", stab_ptr->n_type, (unsigned int) stab_ptr->n_value, strs + (unsigned int) stab_ptr->n_un.n_name); } DEBUG_FreeIncludes(); return DIL_LOADED; }