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.. _amdgpu_synid_sendmsg_rtn:
sendmsg_rtn
===========
An 8-bit value in the instruction to encode the message type.
This operand may be specified as one of the following:
* An :ref:`integer_number<amdgpu_synid_integer_number>` or an :ref:`absolute_expression<amdgpu_synid_absolute_expression>`. The value must be in the range 0..0xFFFF.
* A *sendmsg* value described below.
==================================== ====================================================
Sendmsg Value Syntax Description
==================================== ====================================================
sendmsg(MSG_RTN_GET_DOORBELL) Get doorbell ID.
sendmsg(MSG_RTN_GET_DDID) Get Draw/Dispatch ID.
sendmsg(MSG_RTN_GET_TMA) Get TMA value.
sendmsg(MSG_RTN_GET_TBA) Get TBA value.
sendmsg(MSG_RTN_GET_REALTIME) Get REALTIME value.
sendmsg(MSG_RTN_SAVE_WAVE) Report that this wave is ready to be context-saved.
==================================== ====================================================
Examples:
.. parsed-literal::
s_sendmsg_rtn_b32 s0, 132
s_sendmsg_rtn_b32 s0, sendmsg(MSG_GET_REALTIME)
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