1 extern void abort (void); 2 3 typedef union i386_operand_type 4 { 5 struct 6 { 7 unsigned int reg8:1; 8 unsigned int reg16:1; 9 unsigned int reg32:1; 10 unsigned int reg64:1; 11 unsigned int floatreg:1; 12 unsigned int regmmx:1; 13 unsigned int regxmm:1; 14 unsigned int regymm:1; 15 unsigned int control:1; 16 unsigned int debug:1; 17 unsigned int test:1; 18 unsigned int sreg2:1; 19 unsigned int sreg3:1; 20 unsigned int imm1:1; 21 unsigned int imm8:1; 22 unsigned int imm8s:1; 23 unsigned int imm16:1; 24 unsigned int imm32:1; 25 unsigned int imm32s:1; 26 unsigned int imm64:1; 27 unsigned int disp8:1; 28 unsigned int disp16:1; 29 unsigned int disp32:1; 30 unsigned int disp32s:1; 31 unsigned int disp64:1; 32 unsigned int acc:1; 33 unsigned int floatacc:1; 34 unsigned int baseindex:1; 35 unsigned int inoutportreg:1; 36 unsigned int shiftcount:1; 37 unsigned int jumpabsolute:1; 38 unsigned int esseg:1; 39 unsigned int regmem:1; 40 unsigned int mem:1; 41 unsigned int byte:1; 42 unsigned int word:1; 43 unsigned int dword:1; 44 unsigned int fword:1; 45 unsigned int qword:1; 46 unsigned int tbyte:1; 47 unsigned int xmmword:1; 48 unsigned int ymmword:1; 49 unsigned int unspecified:1; 50 unsigned int anysize:1; 51 } bitfield; 52 unsigned int array[2]; 53 } i386_operand_type; 54 55 unsigned int x00, x01, y00, y01; 56 main(int argc,char * argv[])57int main (int argc, char *argv[]) 58 { 59 i386_operand_type a,b,c,d; 60 61 a.bitfield.reg16 = 1; 62 a.bitfield.imm16 = 0; 63 a.array[1] = 22; 64 65 b = a; 66 x00 = b.array[0]; 67 x01 = b.array[1]; 68 69 c = b; 70 y00 = c.array[0]; 71 y01 = c.array[1]; 72 73 d = c; 74 if (d.bitfield.reg16 != 1) 75 abort(); 76 if (d.bitfield.imm16 != 0) 77 abort(); 78 if (d.array[1] != 22) 79 abort(); 80 81 return 0; 82 } 83