Texas Instruments TMS320C28x, Reference Manual

Page: 366 / 695

MOVL loc32,P
6-209
MOVL loc32,P Store the P Register
SYNTAX OPTIONS OPCODE OBJMODE RPT CYC
MOVL loc32,P
1010 1001 LLLL LLLL
1 − 1
Operands loc32 Addressing mode (see Chapter 5)
P Product register
Description Store the P register contents into the location pointed to by the “loc32”
addressing mode:
[loc32] = P;
Flags and
Modes
N If (loc32 = @ACC) and bit 31 of the ACC register is 1, then the N bit is set;
otherwise, N is cleared.
Z If (loc32 = @ACC) and the value of ACC after the load is zero, then the Z bit is
set; otherwise Z is cleared.
Repeat This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
Example
; Add 64-bit VarA, VarB and VarC, and store result in VarD:
MOVL P,@VarA+0 ; Load P with low 32 bits of VarA
MOVL ACC,@VarA+2 ; Load ACC with high 32 bits of VarA
ADDUL P,@VarB+0 ; Add to P unsigned low 32 bits of VarB
ADDCL ACC,@VarB+2 ; Add to ACC with carry high 32 bits of VarB
ADDUL P,@VarC+0 ; Add to P unsigned low 32 bits of VarC
ADDCL ACC,@VarC+2 ; Add to ACC with carry high 32 bits of VarC
MOVL @VarD+0,P ; Store low 32-bit result into VarD
MOVL @VarD+2,ACC ; Store high 32-bit result into VarD