Abstract:
In an embodiment, a processor includes a plurality of cores. Each core includes a core power unit to detect one or more power management events, and in response to the one or more power management events, initiate a protected power management mode in the core. Software interrupts to the core may be disabled during the protected power management mode. The core is to execute power management code during the protected power management mode. Other embodiments are described and claimed.
Abstract:
An apparatus is described that includes an execution unit within an instruction pipeline. The execution unit has multiple stages of a circuit that includes a) and b) as follows: a) a first logic circuitry section having multiple mix logic sections each having: i) a first input to receive a first quad word and a second input to receive a second quad word; ii) an adder having a pair of inputs that are respectively coupled to the first and second inputs; iii) a rotator having a respective input coupled to the second input; iv) an XOR gate having a first input coupled to an output of the adder and a second input coupled to an output of the rotator. b) permute logic circuitry having inputs coupled to the respective adder and XOR gate outputs of the multiple mix logic sections.
Abstract:
An apparatus is described that includes a semiconductor chip having an instruction execution pipeline having one or more execution units with respective logic circuitry to: a) execute a first instruction that multiplies a first input operand and a second input operand and presents a lower portion of the result, where, the first and second input operands are respective elements of first and second input vectors; b) execute a second instruction that multiplies a first input operand and a second input operand and presents an upper portion of the result, where, the first and second input operands are respective elements of first and second input vectors; and, c) execute an add instruction where a carry term of the add instruction's adding is recorded in a mask register.
Abstract:
A processor is described having a functional unit within an instruction execution pipeline. The functional unit having circuitry to determine whether substantive data from a larger source data size will fit within a smaller data size that the substantive data is to flow to.