Sun Microelectronics
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13. UltraSPARC Extended Instructions
Figure 13-15 shows the format of rs1.
Figure 13-15 Three Dimensional Array Fixed-Point Address Format
The integer parts of X, Y, and Z are converted to the following blocked-address
formats:
Figure 13-16 Three Dimensional Array Blocked-Address Format (Array8)
Figure 13-17 Three Dimensional Array Blocked-Address Format (Array16)
Figure 13-18 Three Dimensional Array Blocked-Address Format (Array32)
The bits above Z upper are set to zero. The number of zeros in the least signifi-
cant bits is determined by the element size. An element size of eight bits has no
zeros, an element size of 16-bits has one zero, and an element size of 32-bits has
two zeros. Bits in X and Y above the size specified by rs2 are ignored.
Z fraction X fractionZ integer Y integer
63 33
44
54
43
32 055 10
X integer
11
Y fraction
2122
20
X
4
Y
Z
Lower
95
X
13
Y
Z
Middle
17 17
X
17
Y
Z
Upper
+ isrc2+ 2 isrc2
20
+ 2 isrc2
0
0
31
X
5
Y
Z
Lower
10 6
X
14
Y
Z
Middle
18 18
X
18
Y
Z
Upper
+ isrc2+ 2 isrc2
21
+ 2 isrc2
00
0
42
X
6
Y
Z
Lower
11 7
X
15
Y
Z
Middle
19 19
X
19
Y
Z
Upper
+ isrc2+ 2 isrc2
22
+ 2 isrc2
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