Store a double-word of data from a general purpose register into a specified memory location. Update the address base.
This instruction should only be used on 64-bit PowerPC processors running a 64-bit application.
| Bits | Value |
|---|---|
| 0-5 | 62 |
| 6-10 | S |
| 11-15 | A |
| 16-29 | ds |
| 30-31 | 01 |
| PowerPC64 | |
|---|---|
| stdu | RS, D ( RA) |
The stdu instruction stores a double-word in storage from the source general-purpose register (GPR) RS into the specified location in memory referenced by the effective address (EA).
If GPR RA is not 0, the EA is the sum of the contents of GPR RA and D, a 16-bit, signed two's complement integer, fullword-aligned, sign-extended to 64 bits. GRP RA is updated with the EA.
If GPR RA = 0, the instruction form is invalid.
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.
Fixed-Point Load and Store with Update Instructions .