Texas Instruments TMS320C6000 Series Reference Manual page 75

ABS
Integer Absolute Value With Saturation
Syntax
Opcode
31 29 28 27
creg z dst
3 5
Description
Execution
Pipeline
Instruction Type
Delay Slots
3-28
ABS (.unit) src2 , dst
.unit = .L1, .L2
Opcode map field used...
src2
dst
src2
dst
23 22 18 17
src2
5
The absolute value of src2 is placed in dst .
if (cond) abs( src2 )
else nop
The absolute value of src2 when src2 is an sint is determined as follows:
1) If src2 w 0, then src2
2) If src2 0 and src2
31
3) If src2 = –2
, then 2
The absolute value of src2 when src2 is an slong is determined as follows:
1) If src2 w 0, then src2
2) If src2 0 and src2
39
3) If src2 = –2
, then 2
Pipeline
E1
Stage
src2
Read
Written dst
Unit in use .L
Single-cycle
0
For operand type...
xsint
sint
slong
slong
13 12 11
0 0 0 0 0
x
5
dst
dst
31
–2 , then – src2
31
dst
– 1
dst
39
–2 , then – src2
39
dst
– 1
Unit Opfield
.L1, .L2 0011010
.L1, L2 0111000
5 4 3 2
op 1 1 0
7
dst
dst
1 0
s p