Chapter 29. MIPS Dependent Features

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29.7. Directives to save and restore options

The directives

.set push

and

.set pop

may be used to save and restore the current settings for all

the options which are controlled by

.set

. The

.set push

directive saves the current settings on a

stack. The

.set pop

directive pops the stack and restores the settings.

These directives can be useful inside an macro which must change an option such as the ISA level or

instruction reordering but does not want to change the state of the code which invoked the macro.

Traditional mips assemblers do not support these directives.

29.8. Directives to control generation of MIPS ASE instructions

The directive

.set mips3d

makes the assembler accept instructions from the MIPS 3D Application

Specific Extension from that point on in the assembly. The

.set nomips3d

directive prevents MIPS 

3D instructions from being accepted.

The directive

.set mdmx

makes the assembler accept instructions from the MDMX Application Spe 

cific Extension from that point on in the assembly. The

.set nomdmx

directive prevents MDMX

instructions from being accepted.

Traditional mips assemblers do not support these directives.