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winedump: Added -G option to dump raw stabs information from PE files.
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@ -582,3 +582,116 @@ void dump_frame_pointer_omission(unsigned long base, unsigned long len)
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/* FPO is used to describe nonstandard stack frames */
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printf("FIXME: FPO (frame pointer omission) debug symbol dumping not implemented yet.\n");
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}
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struct stab_nlist
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{
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union
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{
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char* n_name;
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struct stab_nlist* n_next;
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long n_strx;
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} n_un;
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unsigned char n_type;
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char n_other;
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short n_desc;
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unsigned long n_value;
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};
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static const char* stabs_defs[] = {
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NULL,NULL,NULL,NULL, /* 00 */
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NULL,NULL,NULL,NULL, /* 08 */
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NULL,NULL,NULL,NULL, /* 10 */
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NULL,NULL,NULL,NULL, /* 18 */
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"GSYM","FNAME","FUN","STSYM", /* 20 */
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"LCSYM","MAIN","ROSYM","PC", /* 28 */
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NULL,"NSYMS","NOMAP",NULL, /* 30 */
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"OBJ",NULL,"OPT",NULL, /* 38 */
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"RSYM","M2C","SLINE","DSLINE", /* 40 */
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"BSLINE","DEFD","FLINE",NULL, /* 48 */
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"EHDECL",NULL,"CATCH",NULL, /* 50 */
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NULL,NULL,NULL,NULL, /* 58 */
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"SSYM","ENDM","SO",NULL, /* 60 */
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NULL,NULL,NULL,NULL, /* 68 */
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NULL,NULL,NULL,NULL, /* 70 */
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NULL,NULL,NULL,NULL, /* 78 */
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"LSYM","BINCL","SOL",NULL, /* 80 */
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NULL,NULL,NULL,NULL, /* 88 */
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NULL,NULL,NULL,NULL, /* 90 */
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NULL,NULL,NULL,NULL, /* 98 */
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"PSYM","EINCL","ENTRY",NULL, /* a0 */
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NULL,NULL,NULL,NULL, /* a8 */
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NULL,NULL,NULL,NULL, /* b0 */
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NULL,NULL,NULL,NULL, /* b8 */
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"LBRAC","EXCL","SCOPE",NULL, /* c0 */
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NULL,NULL,NULL,NULL, /* c8 */
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NULL,NULL,NULL,NULL, /* d0 */
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NULL,NULL,NULL,NULL, /* d8 */
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"RBRAC","BCOMM","ECOMM",NULL, /* e0 */
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"ECOML","WITH",NULL,NULL, /* e8 */
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"NBTEXT","NBDATA","NBBSS","NBSTS", /* f0 */
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"NBLCS",NULL,NULL,NULL /* f8 */
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};
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void dump_stabs(const void* pv_stabs, unsigned szstabs, const char* stabstr, unsigned szstr)
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{
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int i;
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int nstab;
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const char* ptr;
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char* stabbuff;
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unsigned int stabbufflen;
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const struct stab_nlist* stab_ptr = pv_stabs;
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const char* strs_end;
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char n_buffer[16];
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nstab = szstabs / sizeof(struct stab_nlist);
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strs_end = stabstr + szstr;
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/*
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* Allocate a buffer into which we can build stab strings for cases
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* where the stab is continued over multiple lines.
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*/
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stabbufflen = 65536;
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stabbuff = malloc(stabbufflen);
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stabbuff[0] = '\0';
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printf("#Sym n_type n_othr n_desc n_value n_strx String\n");
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for (i = 0; i < nstab; i++, stab_ptr++)
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{
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ptr = stabstr + stab_ptr->n_un.n_strx;
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if ((ptr > strs_end) || (ptr + strlen(ptr) > strs_end))
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{
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ptr = "[[*** bad string ***]]";
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}
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else if (ptr[strlen(ptr) - 1] == '\\')
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{
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/*
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* Indicates continuation. Append this to the buffer, and go onto the
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* next record. Repeat the process until we find a stab without the
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* '/' character, as this indicates we have the whole thing.
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*/
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unsigned len = strlen(ptr);
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if (strlen(stabbuff) + len > stabbufflen)
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{
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stabbufflen += 65536;
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stabbuff = realloc(stabbuff, stabbufflen);
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}
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strncat(stabbuff, ptr, len - 1);
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continue;
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}
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else if (stabbuff[0] != '\0')
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{
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strcat(stabbuff, ptr);
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ptr = stabbuff;
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}
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if ((stab_ptr->n_type & 1) || !stabs_defs[stab_ptr->n_type / 2])
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sprintf(n_buffer, "<0x%02x>", stab_ptr->n_type);
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else
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sprintf(n_buffer, "%-6s", stabs_defs[stab_ptr->n_type / 2]);
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printf("%4d %s %-8x % 6d %-8lx %-6lx %s\n",
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i, n_buffer, stab_ptr->n_other, stab_ptr->n_desc, stab_ptr->n_value,
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stab_ptr->n_un.n_strx, ptr);
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}
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free(stabbuff);
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}
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@ -192,6 +192,11 @@ static void do_dumpsect (const char* arg)
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globals.dumpsect = arg;
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}
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static void do_rawdebug (void)
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{
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globals.do_debug = 1;
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}
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static void do_dumpall(void)
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{
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globals.do_dumpheader = 1;
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@ -228,6 +233,7 @@ static const struct my_option option_table[] = {
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{"dump", DUMP, 0, do_dump, "dump <mod> Dumps the content of the module (dll, exe...) named <mod>"},
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{"-C", DUMP, 0, do_symdmngl, "-C Turns on symbol demangling"},
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{"-f", DUMP, 0, do_dumphead, "-f Dumps file header information"},
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{"-G", DUMP, 0, do_rawdebug, "-G Dumps raw debug information"},
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{"-j", DUMP, 1, do_dumpsect, "-j sect_name Dumps only the content of section sect_name (import, export, debug, resource, tls)"},
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{"-x", DUMP, 0, do_dumpall, "-x Dumps everything"},
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{"emf", EMF, 0, do_dumpemf, "emf Dumps an Enhanced Meta File"},
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@ -1076,6 +1076,36 @@ static void dump_dir_resource(void)
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printf( "\n\n" );
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}
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static void dump_debug(void)
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{
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const char* stabs = NULL;
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unsigned szstabs = 0;
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const char* stabstr = NULL;
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unsigned szstr = 0;
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unsigned i;
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const IMAGE_SECTION_HEADER* sectHead;
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sectHead = (const IMAGE_SECTION_HEADER*)
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((const char*)PE_nt_headers + sizeof(DWORD) +
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sizeof(IMAGE_FILE_HEADER) + PE_nt_headers->FileHeader.SizeOfOptionalHeader);
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for (i = 0; i < PE_nt_headers->FileHeader.NumberOfSections; i++, sectHead++)
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{
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if (!strcmp((const char *)sectHead->Name, ".stab"))
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{
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stabs = RVA(sectHead->VirtualAddress, sectHead->Misc.VirtualSize);
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szstabs = sectHead->Misc.VirtualSize;
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}
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if (!strncmp((const char *)sectHead->Name, ".stabstr", 8))
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{
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stabstr = RVA(sectHead->VirtualAddress, sectHead->Misc.VirtualSize);
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szstr = sectHead->Misc.VirtualSize;
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}
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}
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if (stabs && stabstr)
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dump_stabs(stabs, szstabs, stabstr, szstr);
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}
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void pe_dump(const void* pmt)
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{
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int all = (globals.dumpsect != NULL) && strcmp(globals.dumpsect, "ALL") == 0;
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@ -1118,6 +1148,8 @@ void pe_dump(const void* pmt)
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dump_dir_reloc();
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#endif
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}
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if (globals.do_debug)
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dump_debug();
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}
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typedef struct _dll_symbol {
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@ -123,6 +123,7 @@ typedef struct __globals
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/* Options: dump mode */
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int do_demangle; /* -d */
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int do_dumpheader; /* -f */
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int do_debug; /* -G == 1, -g == 2 */
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/* Option arguments: spec mode */
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int start_ordinal; /* -s */
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@ -238,6 +239,8 @@ void ne_dump( const void *exe, size_t exe_size );
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void le_dump( const void *exe, size_t exe_size );
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void mdmp_dump( void );
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void dump_stabs(const void* pv_stabs, unsigned szstabs, const char* stabstr, unsigned szstr);
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FILE *open_file (const char *name, const char *ext, const char *mode);
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#ifdef __GNUC__
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@ -80,6 +80,9 @@ Dumps everything.
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This command prints all available information about the
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file. You may wish to pipe the output through more/less or
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into a file, since a lot of output will be produced.
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.IP \fB-G\fR
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Dumps contents of debug section if any (for now, only stabs
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information is supported).
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.PP
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.B Spec mode:
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.IP \fI<dll>\fR
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