<!-- This defines instructions described in PowerISA Version 3.1B Book I -->
<!-- Section 3.3.16 Byte-Reverse Instructions page 119 (145) -->

# Byte-Reverse Halfword

X-Form

* brh RA,RS

Pseudo-code:

    RA <- ((RS)[8:15]  || (RS)[0:7]   ||
           (RS)[24:31] || (RS)[16:23] ||
           (RS)[40:47] || (RS)[32:39] ||
           (RS)[56:63] || (RS)[48:55])

Special Registers Altered:

    None

# Byte-Reverse Word

X-Form

* brw RA,RS

Pseudo-code:

    RA <- ((RS)[24:31] || (RS)[16:23] ||
           (RS)[8:15]  || (RS)[0:7]   ||
           (RS)[56:63] || (RS)[48:55] ||
           (RS)[40:47] || (RS)[32:39])

Special Registers Altered:

    None

# Byte-Reverse Doubleword

X-Form

* brd RA,RS

Pseudo-code:

    RA <- ((RS)[56:63] || (RS)[48:55] ||
           (RS)[40:47] || (RS)[32:39] ||
           (RS)[24:31] || (RS)[16:23] ||
           (RS)[8:15]  || (RS)[0:7])

Special Registers Altered:

    None