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Reactos
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211/* * Usage: dumpstab input-file * * There are two sources of information: the .stab/.stabstr * sections of the executable and the COFF symbol table. Most * of the information is in the .stab/.stabstr sections. * However, most of our asm files don't contain .stab directives, * so routines implemented in assembler won't show up in the * .stab section. They are present in the COFF symbol table. * So, we mostly use the .stab/.stabstr sections, but we augment * the info there with info from the COFF symbol table when * possible. * * This is a tool and is compiled using the host compiler, * i.e. on Linux gcc and not mingw-gcc (cross-compiler). * Therefore we can't include SDK headers and we have to * duplicate some definitions here. * Also note that the internal functions are "old C-style", * returning an int, where a return of 0 means success and * non-zero is failure. */
#include <stdio.h>#include <string.h>#include <stdlib.h>#include <assert.h>
#include "rsym.h"
const char*stab_type_name ( int stab_type ){ static char buf[32]; switch ( stab_type ) {#define X(n) case n: return #n; X(N_GYSM) X(N_FNAME) X(N_FUN) X(N_STSYM) X(N_LCSYM) X(N_MAIN) X(N_PC) X(N_NSYMS) X(N_NOMAP) X(N_RSYM) X(N_M2C) X(N_SLINE) X(N_DSLINE) X(N_BSLINE) //X(N_BROWS) X(N_DEFD) X(N_EHDECL) //X(N_MOD2) X(N_CATCH) X(N_SSYM) X(N_SO) X(N_LSYM) X(N_BINCL) X(N_SOL) X(N_PSYM) X(N_EINCL) X(N_ENTRY) X(N_LBRAC) X(N_EXCL) X(N_SCOPE) X(N_RBRAC) X(N_BCOMM) X(N_ECOMM) X(N_ECOML) X(N_LENG) } sprintf ( buf, "%lu", stab_type ); return buf;}
static intGetStabInfo(void *FileData, PIMAGE_FILE_HEADER PEFileHeader, PIMAGE_SECTION_HEADER PESectionHeaders, ULONG *StabSymbolsLength, void **StabSymbolsBase, ULONG *StabStringsLength, void **StabStringsBase){ ULONG Idx;
/* Load .stab and .stabstr sections if available */ *StabSymbolsBase = NULL; *StabSymbolsLength = 0; *StabStringsBase = NULL; *StabStringsLength = 0;
for (Idx = 0; Idx < PEFileHeader->NumberOfSections; Idx++) { /* printf("section: '%.08s'\n", PESectionHeaders[Idx].Name); */ if ((strncmp((char*)PESectionHeaders[Idx].Name, ".stab", 5) == 0) && (PESectionHeaders[Idx].Name[5] == 0)) { /* printf(".stab section found. Size %d\n", PESectionHeaders[Idx].SizeOfRawData); */
*StabSymbolsLength = PESectionHeaders[Idx].SizeOfRawData; *StabSymbolsBase = (void *)((char *) FileData + PESectionHeaders[Idx].PointerToRawData); }
if (strncmp((char*)PESectionHeaders[Idx].Name, ".stabstr", 8) == 0) { /* printf(".stabstr section found. Size %d\n", PESectionHeaders[Idx].SizeOfRawData); */
*StabStringsLength = PESectionHeaders[Idx].SizeOfRawData; *StabStringsBase = (void *)((char *) FileData + PESectionHeaders[Idx].PointerToRawData); } }
return 0;}
static voidIterateStabs(ULONG StabSymbolsLength, void *StabSymbolsBase, ULONG StabStringsLength, void *StabStringsBase, ULONG_PTR ImageBase, PIMAGE_FILE_HEADER PEFileHeader, PIMAGE_SECTION_HEADER PESectionHeaders){ PSTAB_ENTRY e; ULONG Count, i;
e = StabSymbolsBase; Count = StabSymbolsLength / sizeof(STAB_ENTRY); if (Count == 0) /* No symbol info */ return;
printf ( "type,other,desc,value,str\n" ); for (i = 0; i < Count; i++) { printf ( "%s,%lu(0x%x),%lu(0x%x),%lu(0x%x),%s\n", stab_type_name(e[i].n_type), e[i].n_other, e[i].n_other, e[i].n_desc, e[i].n_desc, e[i].n_value, e[i].n_value, (char *) StabStringsBase + e[i].n_strx ); }}
int main(int argc, char* argv[]){ PIMAGE_DOS_HEADER PEDosHeader; PIMAGE_FILE_HEADER PEFileHeader; PIMAGE_OPTIONAL_HEADER PEOptHeader; PIMAGE_SECTION_HEADER PESectionHeaders; ULONG ImageBase; void *StabBase; ULONG StabsLength; void *StabStringBase; ULONG StabStringsLength; char* path1; size_t FileSize; void *FileData;
if (2 != argc) { fprintf(stderr, "Usage: dumpstabs <exefile>\n"); exit(1); }
path1 = convert_path(argv[1]);
FileData = load_file ( path1, &FileSize ); if ( !FileData ) { fprintf ( stderr, "An error occured loading '%s'\n", path1 ); exit(1); }
/* Check if MZ header exists */ PEDosHeader = (PIMAGE_DOS_HEADER) FileData; if (PEDosHeader->e_magic != IMAGE_DOS_MAGIC || PEDosHeader->e_lfanew == 0L) { perror("Input file is not a PE image.\n"); free(FileData); exit(1); }
/* Locate PE file header */ /* sizeof(ULONG) = sizeof(MAGIC) */ PEFileHeader = (PIMAGE_FILE_HEADER)((char *) FileData + PEDosHeader->e_lfanew + sizeof(ULONG));
/* Locate optional header */ assert(sizeof(ULONG) == 4); PEOptHeader = (PIMAGE_OPTIONAL_HEADER)(PEFileHeader + 1); ImageBase = PEOptHeader->ImageBase;
/* Locate PE section headers */ PESectionHeaders = (PIMAGE_SECTION_HEADER)((char *) PEOptHeader + PEFileHeader->SizeOfOptionalHeader);
if (GetStabInfo(FileData, PEFileHeader, PESectionHeaders, &StabsLength, &StabBase, &StabStringsLength, &StabStringBase)) { free(FileData); exit(1); }
IterateStabs( StabsLength, StabBase, StabStringsLength, StabStringBase, ImageBase, PEFileHeader, PESectionHeaders);
free(FileData);
return 0;}