| ␊ |
| int main(int argc, char *argv[])␊ |
| {␊ |
| ␉if(argc != 3) ␊ |
| ␉if(argc < 3) ␊ |
| ␉{␊ |
| ␉␉fprintf(stderr, "usage: dyldsymboltool bootFile loadAddr outfile\n");␊ |
| ␉␉fprintf(stderr, "usage: dyldsymboltool obj1 [obj2 ...] outfile\n");␊ |
| ␊ |
| ␉␉exit(-1);␊ |
| ␉}␊ |
| ␊ |
| ␉␊ |
| ␉char line[256];␊ |
| ␉char* command = malloc(strlen(argv[1]) + sizeof("nm -g "));␊ |
| ␉FILE *fpipe;␊ |
| ␊ |
| ␉symbols_dylib_t dylib;␊ |
| ␉symbolList_t*␉symbols = NULL;␊ |
|
| ␉␊ |
| ␉␊ |
| ␉␊ |
| int i;␊ |
| ␉for(i = 1; i < argc-1; i++)␊ |
| {␊ |
| char line[256];␊ |
| char* command = malloc(strlen(argv[1]) + sizeof("nm -g "));␊ |
| FILE *fpipe;␊ |
| ␊ |
| // Parse boot.sys (arg1) to get symtab␊ |
| sprintf(command, "nm -g %s", argv[i]);␉// TODO: read boot.sym directly, no need for nm␊ |
| ␊ |
| if ( !(fpipe = (FILE*)popen(command,"r")) )␊ |
| { // If fpipe is NULL␊ |
| perror("Problems with pipe");␊ |
| exit(1);␊ |
| }␊ |
| ␊ |
| ␊ |
| while ( fgets( line, sizeof line, fpipe))␊ |
| {␊ |
| if((strlen(line) < strlen(argv[i]) ||␊ |
| strncmp(line, argv[i], strlen(argv[i])) != 0)␊ |
| && line[0] != ' ')␊ |
| {␊ |
| uint32_t address = 0;␊ |
| char* addr = strtok(line, " ");␊ |
| strtok(NULL, " ");␊ |
| char* name = strtok(NULL, " ");␊ |
| name[strlen(name)-1] = 0;␉// remove newline␊ |
| sscanf(addr, "%x", &address);␊ |
| if(strcmp(name, VOID_SYMBOL) == 0) start_addr = address;␊ |
| add_symbol(&symbols, name, address);␊ |
| }␊ |
| } ␊ |
| ␊ |
| pclose(fpipe);␊ |
| ␊ |
| free(command);␊ |
| }␊ |
| ␊ |
| ␊ |
| ␉␊ |
| ␉// Parse boot.sys (arg1) to get symtab␊ |
| ␉sprintf(command, "nm -g %s", argv[1]);␉// TODO: read boot.sym directly, no need for nm␊ |
| ␊ |
| ␉if ( !(fpipe = (FILE*)popen(command,"r")) )␊ |
| ␉{ // If fpipe is NULL␊ |
| ␉␉perror("Problems with pipe");␊ |
| ␉␉exit(1);␊ |
| ␉}␊ |
| ␉␊ |
| ␉while ( fgets( line, sizeof line, fpipe))␊ |
| ␉{␊ |
| ␉␉uint32_t address = 0;␊ |
| ␉␉char* addr = strtok(line, " ");␊ |
| ␉␉strtok(NULL, " ");␊ |
| ␉␉char* name = strtok(NULL, " ");␊ |
| ␉␉name[strlen(name)-1] = 0;␉// remove newline␊ |
| ␉␉sscanf(addr, "%x", &address);␊ |
| ␉␉if(strcmp(name, VOID_SYMBOL) == 0) start_addr = address;␊ |
| ␉␉add_symbol(&symbols, name, address);␊ |
| ␉}␊ |
| ␉␊ |
| ␉␊ |
| ␉pclose(fpipe);␊ |
| ␉␊ |
| ␉if(start_addr == 0)␊ |
| ␉{␊ |
| ␉␉fprintf(stderr, "Unable to locate Symbol.dylib start function\n");␊ |
| ␉␉exit(1);␊ |
| ␊ |
| //exit(1);␊ |
| ␉}␊ |
| else␊ |
| {␊ |
| add_symbol(&symbols, START_SYMBOL, start_addr);␊ |
| ␉}␊ |
| ␉␊ |
| ␉add_symbol(&symbols, START_SYMBOL, start_addr);␊ |
| ␉␊ |
| ␉␊ |
| ␉/* Header command info */␊ |
| ␉dylib.header.ncmds = 2;␊ |
| ␉dylib.header.sizeofcmds = sizeof(dylib) - sizeof(struct mach_header);// + dylib.symtab.nsyms * sizeof(struct nlist) + dylib.symtab.strsize;␊ |
|
| ␉␊ |
| ␉␊ |
| ␊ |
| ␉FILE* outfile = fopen(argv[2], "w");␊ |
| ␉FILE* outfile = fopen(argv[argc-1], "w");␊ |
| ␉fwrite(&dylib,␉sizeof(dylib)␉/* Sizeof header + module name */␊ |
| ␉␉␉␉␉, 1, outfile);␊ |
| ␉␊ |
