.EXTERN MY_LABEL2; | |
.section .text; | |
// | |
//8 BIT OPERATIONS | |
// | |
//BITCLR ( Dreg , uimm5 ) ; /* (a) */ | |
BITCLR ( R7 , 0 ) ; | |
BITCLR ( R7 , 31 ) ; | |
BITCLR ( R7 , 15 ) ; | |
BITCLR ( R1 , 0 ) ; | |
BITCLR ( R2 , 1 ) ; | |
BITCLR ( R3 , 19 ) ; | |
//BITSET ( Dreg , uimm5 ) ; /* (a) */ | |
BITSET ( R7 , 0 ) ; | |
BITSET ( R7 , 31 ) ; | |
BITSET ( R7 , 15 ) ; | |
BITSET ( R1 , 0 ) ; | |
BITSET ( R2 , 1 ) ; | |
BITSET ( R3 , 19 ) ; | |
//BITTGL ( Dreg , uimm5 ) ; /* (a) */ | |
BITTGL ( R7 , 0 ) ; | |
BITTGL ( R7 , 31 ) ; | |
BITTGL ( R7 , 15 ) ; | |
BITTGL ( R1 , 0 ) ; | |
BITTGL ( R2 , 1 ) ; | |
BITTGL ( R3 , 19 ) ; | |
//CC = BITTST ( Dreg , uimm5 ) ; /* set CC if bit = 1 (a)*/ | |
CC = BITTST ( R7 , 0 ) ; | |
CC = BITTST ( R7 , 31 ) ; | |
CC = BITTST ( R7 , 15 ) ; | |
CC = BITTST ( R1 , 0 ) ; | |
CC = BITTST ( R2 , 1 ) ; | |
CC = BITTST ( R3 , 19 ) ; | |
//CC = ! BITTST ( Dreg , uimm5 ) ; /* set CC if bit = 0 (a)*/ | |
CC = !BITTST ( R7 , 0 ) ; | |
CC = !BITTST ( R7 , 31 ) ; | |
CC = !BITTST ( R7 , 15 ) ; | |
CC = !BITTST ( R1 , 0 ) ; | |
CC = !BITTST ( R2 , 1 ) ; | |
CC = !BITTST ( R3 , 19 ) ; | |
//Dreg = DEPOSIT ( Dreg, Dreg ) ; /* no extension (b) */ | |
R7 = DEPOSIT(R0, R1); | |
R7 = DEPOSIT(R7, R1); | |
R7 = DEPOSIT(R7, R7); | |
R1 = DEPOSIT(R0, R1); | |
R2 = DEPOSIT(R7, R1); | |
R3 = DEPOSIT(R7, R7); | |
//Dreg = DEPOSIT ( Dreg, Dreg ) (X) ; /* sign-extended (b) */ | |
R7 = DEPOSIT(R0, R1)(X); | |
R7 = DEPOSIT(R7, R1)(X); | |
R7 = DEPOSIT(R7, R7)(X); | |
R1 = DEPOSIT(R0, R1)(X); | |
R2 = DEPOSIT(R7, R1)(X); | |
R3 = DEPOSIT(R7, R7)(X); | |
//Dreg = EXTRACT ( Dreg, Dreg_lo ) (Z) ; /* zero-extended (b)*/ | |
R7 = EXTRACT(R0, R1.L)(Z); | |
R7 = EXTRACT(R7, R1.L)(Z); | |
R7 = EXTRACT(R7, R7.L)(Z); | |
R1 = EXTRACT(R0, R1.L)(Z); | |
R2 = EXTRACT(R7, R1.L)(Z); | |
R3 = EXTRACT(R7, R7.L)(Z); | |
//Dreg = EXTRACT ( Dreg, Dreg_lo ) (X) ; /* sign-extended (b)*/ | |
R7 = EXTRACT(R0, R1.L)(X); | |
R7 = EXTRACT(R7, R1.L)(X); | |
R7 = EXTRACT(R7, R7.L)(X); | |
R1 = EXTRACT(R0, R1.L)(X); | |
R2 = EXTRACT(R7, R1.L)(X); | |
R3 = EXTRACT(R7, R7.L)(X); | |
//BITMUX ( Dreg , Dreg , A0 ) (ASR) ; /* shift right, LSB is shifted out (b) */ | |
BITMUX(R0, R1, A0)(ASR); | |
BITMUX(R0, R2, A0)(ASR); | |
BITMUX(R1, R3, A0)(ASR); | |
//BITMUX(R0, R0, A0)(ASR); | |
//BITMUX ( Dreg , Dreg , A0 ) (ASL) ; /* shift left, MSB is shifted out (b) */ | |
//BITMUX(R0, R0, A0)(ASL); | |
BITMUX(R0, R1, A0)(ASL); | |
BITMUX(R1, R2, A0)(ASL); | |
//Dreg_lo = ONES Dreg ; /* (b) */ | |
R0.L = ONES R0; | |
R0.L = ONES R1; | |
R1.L = ONES R6; | |
R2.L = ONES R7; | |