Assembler Language Reference

ldx (Store Double Word Indexed) Instruction

Purpose

Load a double-word from a specified memory location into a general purpose register.

Syntax

Bits	Value
0-5	31
6-10	D
11-15	A
16-20	B
21-30	21
31	0

PowerPC
ldx	RT, RA, RB

Description

The ldx instruction loads a double-word from the specified memory location referenced by the effective address (EA) into the general-purpose register (GPR) RT.

If GRP RA is not 0, the EA is the sum of the contents of GRP RA and B; otherwise, the EA is equal to the contents of RB.

Parameters

RT	Specifies target general-purpose register where result of operation is stored.
RA	Specifies source general-purpose register for EA calculation.
RB	Specifies source general-purpose register for EA calculation.

Implementation

This instruction is defined only for 64-bit implementations. Using it on a 32-bit implementation will cause the system illegal instruction error handler to be invoked.