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06e58ab5fa
Many files with Eric Valette as author only had his email address. This led to them being missed in previous relicensing passes. This effort relicensed where possible and made efforts to have the file follow the RTEMS standard for top of files (SPDX, Doxygen, and then copyright/license). Closes #5418.
95 lines
1.7 KiB
C
95 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+-with-RTEMS-exception */
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/*
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* spr.h -- Access to special purpose registers.
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*
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* Copyright (C) 1998 Gabriel Paubert, paubert@iram.es
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*
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* Modified to compile in RTEMS development environment
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* by Eric Valette
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*
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* Copyright (c) 1998 Eric Valette <eric.valette@free.fr>
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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.org/license/LICENSE.
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*
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*/
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#ifndef _LIBCPU_SPR_H
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#define _LIBCPU_SPR_H
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#include <rtems/powerpc/registers.h>
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#define __MFSPR(reg, val) \
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__asm__ __volatile__("mfspr %0,"#reg : "=r" (val))
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#define __MTSPR(val, reg) \
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__asm__ __volatile__("mtspr "#reg",%0" : : "r" (val))
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#define SPR_RW(reg) \
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static inline unsigned long _read_##reg(void) \
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{\
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unsigned long val;\
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__MFSPR(reg, val);\
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return val;\
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}\
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static inline void _write_##reg(unsigned long val)\
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{\
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__MTSPR(val,reg);\
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return;\
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}
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#define SPR_RO(reg) \
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static inline unsigned long _read_##reg(void) \
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{\
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unsigned long val;\
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__MFSPR(reg,val);\
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return val;\
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}
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static inline unsigned long _read_MSR(void)
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{
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unsigned long val;
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__asm__ volatile("mfmsr %0" : "=r" (val));
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return val;
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}
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static inline void _write_MSR(unsigned long val)
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{
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__asm__ volatile("mtmsr %0" : : "r" (val));
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return;
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}
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static inline unsigned long _read_SR(void * va)
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{
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unsigned long val;
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__asm__ volatile (
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".machine \"push\"\n"
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".machine \"any\"\n"
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"mfsrin %0,%1\n"
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".machine \"pop\"" :
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"=r" (val) :
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"r" (va)
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);
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return val;
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}
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static inline void _write_SR(unsigned long val, void * va)
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{
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__asm__ volatile (
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".machine \"push\"\n"
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".machine \"any\"\n"
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"mtsrin %0,%1\n"
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".machine \"pop\"" : :
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"r" (val) , "r" (va) :
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"memory"
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);
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return;
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}
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#endif
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