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048459aeac
* shared/misc/m68kidle.c: added "cc" clobber to inline asm; STOP instruction modifies CCR!
44 lines
944 B
C
44 lines
944 B
C
/*
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* Motorola MC68xxx Dependent Idle Body Source
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*
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* COPYRIGHT (c) 1989-2002.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*/
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#include <rtems/system.h>
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#include <rtems/score/thread.h>
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/*PAGE
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*
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* _CPU_Thread_Idle_body
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*
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* This kernel routine is the idle thread. The idle thread runs any time
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* no other thread is ready to run. This thread loops forever with
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* interrupts enabled.
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*
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* Input parameters:
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* ignored - this parameter is ignored
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*
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* Output parameters: NONE
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*/
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void *_CPU_Thread_Idle_body( uint32_t ignored )
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{
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#if defined(mcf5272)
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for( ; ; ) {
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asm volatile( "nop" );
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asm volatile( "nop" );
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}
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#else
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for( ; ; )
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asm volatile( "stop #0x3000":::"cc" ); /* supervisor mode, all interrupts on */
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#endif
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}
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