41-10 Vol. 3D

SGX INSTRUCTION REFERENCES

41.3 

INTEL® SGX SYSTEM LEAF FUNCTION REFERENCE

Leaf functions available with the ENCLS instruction mnemonic are covered in this section. In general, each instruc-
tion leaf requires EAX to specify the leaf function index and/or additional implicit registers specifying leaf-specific 
input parameters. An instruction operand encoding table provides details of each implicit register usage and asso-
ciated input/output semantics.
In many cases, an input parameter specifies an effective address associated with a memory object inside or outside 
the EPC, the memory addressing semantics of these memory objects are also summarized in a separate table.