.SAVEXMM128
Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here. ArchiveDisclaimer

.SAVEXMM128 

Generates either a UWOP_SAVE_XMM128 or a UWOP_SAVE_XMM128_FAR unwind code entry for the specified XMM register and offset using the current prologue offset. MASM will choose the most efficient encoding.


.savexmm128 xmmreg , offset

.SAVEXMM128 allows ml64.exe users to specify how a frame function unwinds, and is only allowed within the prologue, which extends from the PROC FRAME declaration to the .ENDPROLOG directive. These directives do not generate code; they only generate .xdata and .pdata. .SAVEXMM128 should be preceded by instructions that actually implement the actions to be unwound. It is a good practice to wrap both the unwind directives and the code they are meant to unwind in a macro to ensure agreement.

offset must be a multiple of 16.

For more information, see MASM for x64 (ml64.exe).

Show:
© 2016 Microsoft