Intel Extensible Firmware Interface - Manual (Page 832)

Extensible Firmware Interface Specification
19-58 12/01/02 Version 1.10
STORESP
SYNTAX:
STORESP R
1
, [IP|Flags]
DESCRIPTION:
This instruction transfers the contents of a dedicated register to a general-purpose register. See
Table 19-2 for the VM dedicated registers and their corresponding index values.
OPERATION:
Operand 1 <= Operand 2
Table 19-44. STORESP Instruction Encoding
BYTE DESCRIPTION
Bit Description
6..7 Reserved = 0
0
0..5 Opcode = 0x2A
7 Reserved = 0
4..6 Operand 2 dedicated register index
3 Reserved = 0
1
0..2 Operand 1 general purpose register
BEHAVIORS AND RESTRICTIONS:
• Specifying an invalid dedicated register index results in an instruction encoding exception.