tm1300 NXP Semiconductors, tm1300 Datasheet - Page 444

• Manufacturer Part Number: tm1300
• Description: Tm-1300 Media Processor
• Manufacturer: NXP Semiconductors

TM1300 Data Book
roli
SYNTAX
FUNCTION
DESCRIPTION
result in r dest equal to r src1 rotated left by n bits. The value of n must be between 0 and 31, inclusive. The most-
significant n bits of r src1 appear as the least-significant n bits in r dest .
modification of the destination register. If the LSB of r guard is 1, r dest is written; otherwise, r dest is unchanged.
EXAMPLES
A-158
r60 = 0x20
r10 = 0, r60 = 0x20
r20 = 1, r60 = 0x20
r70 = 0xfffffffc
r80 = 0xe
As shown below, the
The
[ IF r guard ] roli( n ) r src1
if r guard then {
}
roli
r dest <31: n >
r dest < n –1:0>
Intermediate result
(example: n = 9)
Initial Values
operations optionally take a guard, specified in r guard . If a guard is present, its LSB controls the
r src1 <31– n :0>
r src1 <31:32– n >
roli
3
PRODUCT SPECIFICATION
operation takes a single argument in r src1 and an immediate modifier n and produces a
r src1
r dest
2
roli(3) r60
IF r10 roli(3) r60
IF r20 roli(3) r60
roli(2) r70
roli(30) r80
3
3
32 bits from r src1
r dest
Operation
Left rotator
r90
r120
r125
r100
r110
0
9
3
Rotate left by immediate
2
0
0
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
rol asl asli asr asri lsl
r90
no change, since guard is false
r110
r120
r125
32 bits from r src1
Rotate amount n
from operation modifier
Philips Semiconductors
0x100
0x100
0xfffffff3
0x80000003
lsli lsr lsri
ATTRIBUTES
SEE ALSO
Result
shifter
7 bits
0..31
1, 2
98
1
1
0