1 2 .EXTERN MY_LABEL2; 3 .section .text; 4 5 // 6 //8 BIT OPERATIONS 7 // 8 9 //BITCLR ( Dreg , uimm5 ) ; /* (a) */ 10 BITCLR ( R7 , 0 ) ; 11 BITCLR ( R7 , 31 ) ; 12 BITCLR ( R7 , 15 ) ; 13 BITCLR ( R1 , 0 ) ; 14 BITCLR ( R2 , 1 ) ; 15 BITCLR ( R3 , 19 ) ; 16 17 //BITSET ( Dreg , uimm5 ) ; /* (a) */ 18 BITSET ( R7 , 0 ) ; 19 BITSET ( R7 , 31 ) ; 20 BITSET ( R7 , 15 ) ; 21 BITSET ( R1 , 0 ) ; 22 BITSET ( R2 , 1 ) ; 23 BITSET ( R3 , 19 ) ; 24 25 //BITTGL ( Dreg , uimm5 ) ; /* (a) */ 26 BITTGL ( R7 , 0 ) ; 27 BITTGL ( R7 , 31 ) ; 28 BITTGL ( R7 , 15 ) ; 29 BITTGL ( R1 , 0 ) ; 30 BITTGL ( R2 , 1 ) ; 31 BITTGL ( R3 , 19 ) ; 32 33 //CC = BITTST ( Dreg , uimm5 ) ; /* set CC if bit = 1 (a)*/ 34 CC = BITTST ( R7 , 0 ) ; 35 CC = BITTST ( R7 , 31 ) ; 36 CC = BITTST ( R7 , 15 ) ; 37 CC = BITTST ( R1 , 0 ) ; 38 CC = BITTST ( R2 , 1 ) ; 39 CC = BITTST ( R3 , 19 ) ; 40 41 //CC = ! BITTST ( Dreg , uimm5 ) ; /* set CC if bit = 0 (a)*/ 42 CC = !BITTST ( R7 , 0 ) ; 43 CC = !BITTST ( R7 , 31 ) ; 44 CC = !BITTST ( R7 , 15 ) ; 45 CC = !BITTST ( R1 , 0 ) ; 46 CC = !BITTST ( R2 , 1 ) ; 47 CC = !BITTST ( R3 , 19 ) ; 48 49 //Dreg = DEPOSIT ( Dreg, Dreg ) ; /* no extension (b) */ 50 R7 = DEPOSIT(R0, R1); 51 R7 = DEPOSIT(R7, R1); 52 R7 = DEPOSIT(R7, R7); 53 R1 = DEPOSIT(R0, R1); 54 R2 = DEPOSIT(R7, R1); 55 R3 = DEPOSIT(R7, R7); 56 57 //Dreg = DEPOSIT ( Dreg, Dreg ) (X) ; /* sign-extended (b) */ 58 R7 = DEPOSIT(R0, R1)(X); 59 R7 = DEPOSIT(R7, R1)(X); 60 R7 = DEPOSIT(R7, R7)(X); 61 R1 = DEPOSIT(R0, R1)(X); 62 R2 = DEPOSIT(R7, R1)(X); 63 R3 = DEPOSIT(R7, R7)(X); 64 65 //Dreg = EXTRACT ( Dreg, Dreg_lo ) (Z) ; /* zero-extended (b)*/ 66 R7 = EXTRACT(R0, R1.L)(Z); 67 R7 = EXTRACT(R7, R1.L)(Z); 68 R7 = EXTRACT(R7, R7.L)(Z); 69 R1 = EXTRACT(R0, R1.L)(Z); 70 R2 = EXTRACT(R7, R1.L)(Z); 71 R3 = EXTRACT(R7, R7.L)(Z); 72 73 //Dreg = EXTRACT ( Dreg, Dreg_lo ) (X) ; /* sign-extended (b)*/ 74 R7 = EXTRACT(R0, R1.L)(X); 75 R7 = EXTRACT(R7, R1.L)(X); 76 R7 = EXTRACT(R7, R7.L)(X); 77 R1 = EXTRACT(R0, R1.L)(X); 78 R2 = EXTRACT(R7, R1.L)(X); 79 R3 = EXTRACT(R7, R7.L)(X); 80 81 //BITMUX ( Dreg , Dreg , A0 ) (ASR) ; /* shift right, LSB is shifted out (b) */ 82 BITMUX(R0, R1, A0)(ASR); 83 BITMUX(R0, R2, A0)(ASR); 84 BITMUX(R1, R3, A0)(ASR); 85 //BITMUX(R0, R0, A0)(ASR); 86 87 //BITMUX ( Dreg , Dreg , A0 ) (ASL) ; /* shift left, MSB is shifted out (b) */ 88 //BITMUX(R0, R0, A0)(ASL); 89 BITMUX(R0, R1, A0)(ASL); 90 BITMUX(R1, R2, A0)(ASL); 91 92 //Dreg_lo = ONES Dreg ; /* (b) */ 93 R0.L = ONES R0; 94 R0.L = ONES R1; 95 R1.L = ONES R6; 96 R2.L = ONES R7; 97 98 99
