vinswlx

Vector Insert Word from GPR using GPR-specified Left-Index VX-form

vinswlx VRT,RA,RB

Inserts the contents of bits 32:63 of a general-purpose register into byte elements of a vector register based on an index specified in another general-purpose register.

Encoding

Binary Layout

4

0:5

VRT

6:10

RA

11:15

RB

16:31

 

Format VX-form

Opcode 0x1000028F

Extension VMX (AltiVec)

Operands

• VRT
  Target Vector Register
• RA
  Source General Purpose Register containing the index
• RB
  Source General Purpose Register containing the data to insert

Example

vinswlx v1, r4, r5

Related

More in VMX (AltiVec)

Reference

View in PowerISA v3.1C Specification ↗ OPF Power ISA v3.1C

Description

The instruction inserts the contents of bits 32:63 of GPR[RB] into byte elements index:index+3 of VSR[VRT+32], where index is the value of bits 60:63 of GPR[RA].

Operation

if MSR.VEC=0 then
    Vector_Unavailable()
index ← GPR[RA].bit[60:63]
VSR[VRT+32].byte[index:index+3] ← GPR[RB].bit[32:63]

Programming Note

This instruction is used to insert the upper 32 bits of a general-purpose register (GPR) into specific byte elements of a vector register. Ensure that the index specified by the top 4 bits of GPR[RA] is within the valid range for the target vector register. This operation requires the Vector Facility to be enabled; otherwise, it will raise an exception.