privileged instruction

[′priv·ə·lijd in′strək·shən]

(computer science)

A class of instructions, usually including storage protection setting, interrupt handling, timer control, input/output, and special processor status-setting instructions, that can be executed only when the computer is in a special privileged mode that is generally available to an operating or executive system, but not to user programs.

privileged instruction

A machine code instruction that may only be executed when the processor is running in supervisor mode. Privileged instructions include operations such as I/O and memory management.

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KFUPM also supplies students with privileged instruction and training to make them able to contribute to comprehensive development after graduation, the rector said.

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Underlying hardware mechanisms, such as the MMU, privileged instruction access control (i.

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Because the binary translation of privileged instructions is so cumbersome, hardware-assisted virtualization has been added to modern x86 chips from Intel (Intel VT) and AMD (AMD-V).

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These include conditional moves, prefetch instructions, privileged instructions and other enhancements.

MIPS Technologies, Inc. Enhances Architecture to Support Growing Need for IP Re-Use and Integration

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