PNX1300 Philips, PNX1300 Datasheet - Page 363

• Manufacturer Part Number: PNX1300
• Description: Media Processors
• Manufacturer: Philips

PNX1300/01/02/11 Data Book
funshift2
SYNTAX
FUNCTION
DESCRIPTION
rsrc2 and writes the most-significant 32 bits of the shifted result to r d est.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is not changed.
EXAMPLES
A-65
r30 = 0xaabbccdd, r40 = 0x11223344
r10 = 0, r40 = 0x11223344,
r30 = 0xaabbccdd
r20 = 1, r40 = 0x11223344,
r30 = 0xaabbccdd
As shown below, the
The
[ IF rguard ] funshift2 rsrc1 rsrc2
if rguard then
rsrc1
funshift2
31
rdest<31:16>
rdest<15:0>
Initial Values
23
rsrc2<31:16>
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
rsrc1<15:0>
funshift2
PRELIMINARY SPECIFICATION
15
rdest
31
operation effectively shifts left by two bytes the 64-bit concatenation of rsrc1 and
funshift2 r30 r40
IF r10 funshift2 r40 r30
IF r20 funshift2 r40 r30
7
23
0
rdest
Operation
15
rsrc2
31
r50
7
r60
r70
23
0
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r50
no change, since guard is false
r70
funshift1 funshift3 rol
Funnel-shift 2 bytes
Philips Semiconductors
0xccdd1122
0x3344aabb
15
ATTRIBUTES
SEE ALSO
Result
7
shifter
100
1, 2
No
—
0
2
1