Commit | Line | Data |
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a9298102 JZ |
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 |