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Instruction Set 9-161
sthbrx
Store Halfword Byte-Reverse Indexed
sthbrx
Store Halfword Byte-Reverse Indexed
EA ← (RA|0) + (RB)
MS(EA, 2)
← (RS)
24:31
|| (RS)
16:23
An effective address (EA) is formed by adding an index to a base address. The index is the contents
of register RB. The base address is 0 when the RA field is 0, and is the contents of register RA
otherwise.
The least significant halfword of register RS is byte-reversed. The result is stored into the halfword at
the EA.
If instruction bit 31 contains 1, the contents of CR[CR0] are undefined.
Registers Altered
• None
Invalid Instruction Forms
• Reserved fields
Architecture Note
This instruction is part of the PowerPC User Instruction Set Architecture.
sthbrx RS, RA, RB
31 RS RA RB 918
0 6 11 16 21 31