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ffc9846a02
Add tricore_mtcr()/tricore_mfcr() inline-assembly wrappers for the MTCR/MFCR (move to/from Core Special Function Register) instructions. These let arch/tricore code access CSRs directly without relying on the Infineon iLLD intrinsics, and are used by the following iLLD-removal change in the performance-counter path. Signed-off-by: zhangyu117 <zhangyu117@xiaomi.com>
80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/****************************************************************************
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* arch/tricore/include/arch.h
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/* This file should never be included directly but, rather,
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* only indirectly through nuttx/arch.h
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*/
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#ifndef __ARCH_TRICORE_INCLUDE_ARCH_H
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#define __ARCH_TRICORE_INCLUDE_ARCH_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#ifndef __ASSEMBLY__
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# include <stdint.h>
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# include <stddef.h>
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* MTCR and MFCR - move to / from Core Special Function Register */
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#define tricore_mtcr(reg, val) \
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({ \
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__asm__ volatile ("mtcr %0,%1\n\t"::"i"(reg),"d"(val):"memory"); \
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})
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#define tricore_mfcr(reg) \
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({ \
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uint32_t __val; \
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__asm__ volatile ("mfcr %0,%1": "=d" (__val) :"i"(reg): "memory"); \
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__val; \
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})
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ARCH_TRICORE_INCLUDE_ARCH_H */
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