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<!---======================= begin_copyright_notice ============================
Copyright (C) 2020-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ==========================-->
## Opcode
OWORD_ST = 0x36
## Format
| | | | |
| --- | --- | --- | --- |
| 0x36(OWORD_ST) | Size | Surface | Offset | Src |
## Semantics
for (i = 0; i < num_owords; ++i) {
surface[offset+i] = src[i]; //16 byte, oword-aligned
}
## Description
Writes contiguous owords (one oword is 16 byte) to <surface> starting at <offset>, taking the values from <Src>. The execution mask is set to 'NoMask' (i.e., every element is written to).
- **Size(ub):**
- Bit[2..0]: Number of owords to write
- 0b000: 1 oword
- 0b001: 2 owords
- 0b010: 4 owords
- 0b011: 8 owords
- **Surface(ub):** Index of the surface variable. It must be a buffer.
- T0 (SLM): {ICLLP+} Yes. No for earlier platforms
- T5 (stateless): yes
- **Offset(scalar):** The offset of the write in units of owords. Must have type UD
- **Src(raw_operand):** The raw operand of a general variable storing the values to be written
#### Properties
- **Out-of-bound Access:** On write: data is dropped.
## Text
```
OWORD_ST (<size>) <surface> <offset> <src>
```
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