Texas Instruments TMS320C6000 Series Reference Manual page 130

Signed or Unsigned Integer Multiply 16lsb x 16msb
Syntax
Opcode
31 29 28 27
creg z dst
3 5
Description
Execution
MPYLH (.unit) src1 , src2 , dst
or
MPYLHU (.unit) src1 , src2 , dst
or
MPYLUHS (.unit) src1 , src2 , dst
or
MPYLSHU (.unit) src1 , src2 , dst
.unit = .M1 or .M2
Opcode map field used...
src1
src2
dst
src1
src2
dst
src1
src2
dst
src1
src2
dst
23 22 18 17
src2
5
The src1 operand is multiplied by the src2 operand. The result is placed in dst .
The source operands are signed by default. The S is needed in the mnemonic
to specify a signed operand when both signed and unsigned operands are
used.
if (cond) lsb16( src1 )
else nop
MPYLH(U)/MPYLUHS/MPYLSHU
For operand type...
slsb16
xsmsb16
sint
ulsb16
xumsb16
uint
ulsb16
xsmsb16
sint
slsb16
xumsb16
sint
13 12 11
src1/cst
x
5
msb16( src2 )
TMS320C62x/C67x Fixed-Point Instruction Set
Unit Opfield Mnemonic
.M1, 10001
.M2
.M1, 10111 MPYLHU
.M2
.M1, 10101 MPYLUHS
.M2
.M1, 10011 MPYLSHU
.M2
7 6 5 4 3
op 0 0 0 0
5
dst
MPYLH
2 1 0
0 s p
3-83