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/**
* @file
*
* @brief CPU Port Implementation API
*/
/*
* Copyright (c) 2016 embedded brains GmbH
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_SCORE_CPUIMPL_H
#define _RTEMS_SCORE_CPUIMPL_H
#include <rtems/score/cpu.h>
#ifdef RTEMS_SMP
/* Use SPRG0 for the per-CPU control of the current processor */
#define PPC_PER_CPU_CONTROL_REGISTER 272
#endif /* RTEMS_SMP */
#ifndef ASM
#ifdef __cplusplus
extern "C" {
#endif
#ifdef RTEMS_SMP
static inline struct Per_CPU_Control *_PPC_Get_current_per_CPU_control( void )
{
struct Per_CPU_Control *cpu_self;
__asm__ volatile (
"mfspr %0, " RTEMS_XSTRING( PPC_PER_CPU_CONTROL_REGISTER )
: "=r" ( cpu_self )
);
return cpu_self;
}
#define _CPU_Get_current_per_CPU_control() _PPC_Get_current_per_CPU_control()
#endif /* RTEMS_SMP */
#ifdef __cplusplus
}
#endif
#endif /* ASM */
#endif /* _RTEMS_SCORE_CPUIMPL_H */
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