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Diffstat (limited to 'private/ntos/nthals/halalpha/idle.s')
| -rw-r--r-- | private/ntos/nthals/halalpha/idle.s | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/private/ntos/nthals/halalpha/idle.s b/private/ntos/nthals/halalpha/idle.s new file mode 100644 index 000000000..0d53d7aed --- /dev/null +++ b/private/ntos/nthals/halalpha/idle.s @@ -0,0 +1,62 @@ +// TITLE("Processor Idle Support") +//++ +// +// Copyright (c) 1992 Digital Equipment Corporation +// Copyright (c) 1993 Digital Equipment Corporation +// +// Module Name: +// +// idle.s +// +// Abstract: +// +// This module implements the HalProcessorIdle interface +// +// Author: +// +// John Vert (jvert) 11-May-1994 +// +// Environment: +// +// Revision History: +// +//-- +#include "halalpha.h" + + + SBTTL("Processor Idle") +//++ +// +// VOID +// HalProcessorIdle( +// VOID +// ) +// +// Routine Description: +// +// This function is called when the current processor is idle with +// interrupts disabled. There is no thread active and there are no +// DPCs to process. Therefore, power can be switched to a standby +// mode until the the next interrupt occurs on the current processor. +// +// N.B. This routine is entered with interrupts disabled. This routine +// must do any power management enabling necessary, enable interrupts, +// then either return or wait for an interrupt. +// +// Arguments: +// +// None. +// +// Return Value: +// +// None. +// +//-- + + LEAF_ENTRY(HalProcessorIdle) + + ENABLE_INTERRUPTS // no power management, just + // enable interrupts and return + ret zero, (ra) + + .end HalProcessorIdle |