int main (int argc, char *argv[]) {
FILE *fp;
char *filename;
//
if (argc < 2) {
usage (argc, argv);
exit(1);
}
filename = argv[1];
fp = fopen (filename, "rb");
if (!fp) {
fprintf (stderr, "Error: Failed opening %s\n", argv[1]);
return 1;
}
// file checks
if (checkFile (fp) < 0) {
fprintf(stderr, "Error: File analysis failed\n");
exit(1);
}
// dump file :)
if (PeCheck(fp)) {
pe_dump(fp);
}
else if (ElfCheck(fp)) {
elf_dump(fp);
}
fclose(fp);
return 0;
}
// Gets the cfg from the command line, reads it, updates the registers,
// reads the MIPS instructions from the elf file and inserts them into
// memory. Lastly, main initializes the stackpointer,
// interprets the instructions and shows the status of the registers
// after completing them.
int main(int argc, char *argv[]) {
int read;
if (argc == 3) {
read = read_config(argv[1]);
}
else {
printf(ERROR_INVALID_ARGS);
return -1;
}
if (read == 0) {
int retElfDump = elf_dump(argv[2], &PC, &mem[0], MEMSZ);
if(retElfDump != 0) {
printf(ERROR_ELF_DUMP);
return -2;
}
SP = MIPS_RESERVE + MEMSZ;
int retInterp = interp();
if (retInterp != SAW_SYSCALL && retInterp != 0) {
printf(ERROR_INTERP);
return -3;
}
show_status();
}
else {
printf(ERROR_READ_CONFIG);
return -4;
}
return 0;
}
void read_MIPS(MIPS_t *mips, const char *fname) {
switch (elf_dump(fname, &(mips->pc), &(*mips->mem)[0], mips->mem_sz)) {
case ELF_ERROR_IO_ERROR :
errorf("ERROR: read_MIPS - problems reading file `%s'.\n", fname);
case ELF_ERROR_OUT_OF_MEM :
errorf("ERROR: read_MIPS - ELF file larger than allocated memory buffer.\n");
case ELF_ERROR_NOT_ELF :
errorf("ERROR: read_MIPS - not an ELF file.\n");
case ELF_ERROR_NOT_SUPPORTED :
errorf("ERROR: read_MIPS - unsupported ELF features detected.\n");
}
}
