43. struct { char a; char b; char c; short d; } TestStr={2,4,8,16}; struct { char a; unsigned b; char c; short d; } TestStr={2,4,8,16}; struc_2 struc ; (sizeof=0xC) 00000000 a db ? 00000001 db ? 00000002 db ? 00000003 db ? 00000004 b dd ? 00000008 c db ? 00000009 db ? 0000000A d dw ? 0000000C struc_2 ends struc_1 struc ; (sizeof=0x6) 00000000 a db ? 00000001 b db ? 00000002 c db ? 00000003 db ? 00000004 d dw ? 00000006 struc_1 ends
45. int ReturnMax(int a, int b) { if (a>b) return a; else return b; } mov eax, [ebp+arg_0] cmp eax, [ebp+arg_4] jle short loc_4122DD mov eax, [ebp+arg_0] jmp short loc_4122E0 loc_4122DD: mov eax, [ebp+arg_4] loc_4122E0: ... ret C++ ASM
46. char * DoSwitch(int MyNumber) { char * result; switch (MyNumber) { case 1: result="one"; break; case 2: result="two"; break; case 3: case 4: case 5: result="many"; break; default: result="don't know"; } return result; } mov ecx, [ebp+arg_0] sub ecx, 1 cmp ecx, 4 ja short loc_4132F7 jmp ds: off_413308 [ecx*4] loc_4132DC: mov [ebp+var_8], offset aOne jmp short loc_4132FE loc_4132E5: mov [ebp+var_8], offset aTwo jmp short loc_4132FE loc_4132EE : mov [ebp+var_8], offset aMany jmp short loc_4132FE loc_4132F7: mov [ebp+var_8], offset aDonTKnow loc_4132FE: mov eax, [ebp+var_8] off_413308 dd offset loc_4132DC dd offset loc_4132E5 dd offset loc_4132EE dd offset loc_4132EE dd offset loc_4132EE C++ ASM
48. Кристина Цифуэнтэс ( Cristina Cifuentes ) Sun Research Laboratories 1991 г Декомпилятор DCC Код Я не сумашедшая, просто улыбаюсь. Пролог Эпилог Ветвление Присвоение Вызов функции
49. int main (int argc, void ** argv) { if (argc == 3) { int result=0; int MyInt=0; int MyHex=0; sscanf(argv[1], “%i”,&MyInt); sscanf(argv[2], “%i”,&MyInt); result=(MyInt*MyHex) ^ 0x30; } else printf(“not enough arguments”); return 0; } Пролог
50. int main (int argc, void ** argv) { if (argc == 3) { int result=0; int MyInt=0; int MyHex=0; sscanf(argv[1], “%i”,&MyInt); sscanf(argv[2], “%i”,&MyInt); result=(MyInt*MyHex) ^ 0x30; } else printf(“not enough arguments”); return 0; } Присвоение
51. int main (int argc, void ** argv) { if (argc == 3) { int result=0; int MyInt=0; int MyHex=0; sscanf(argv[1], “%i”,&MyInt); sscanf(argv[2], “%i”,&MyInt); result=(MyInt*MyHex) ^ 0x30; } else printf(“not enough arguments”); return 0; } Ветвление
52. int main (int argc, void ** argv) { if (argc == 3) { int result=0; int MyInt=0; int MyHex=0; sscanf(argv[1], “%i”,&MyInt); sscanf(argv[2], “%i”,&MyInt); result=(MyInt*MyHex) ^ 0x30; } else printf(“not enough arguments”); return 0; } Вызов функции
53. int main (int argc, void ** argv) { if (argc == 3) { int result=0; int MyInt=0; int MyHex=0; sscanf(argv[1], “%i”,&MyInt); sscanf(argv[2], “%i”,&MyInt); result=(MyInt*MyHex) ^ 0x30; } else printf(“not enough arguments”); return 0; } Эпилог