80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/****************************************************************************
|
|
* arch/risc-v/include/rv32im/arch.h
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/* This file should never be included directly but, rather,
|
|
* only indirectly through nuttx/arch.h
|
|
*/
|
|
|
|
#ifndef __ARCH_RISCV_INCLUDE_RV32IM_ARCH_H
|
|
#define __ARCH_RISCV_INCLUDE_RV32IM_ARCH_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Types
|
|
****************************************************************************/
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/****************************************************************************
|
|
* Inline functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: riscv_getsp
|
|
****************************************************************************/
|
|
|
|
static inline uint32_t riscv_getsp(void)
|
|
{
|
|
register uint32_t sp;
|
|
__asm__
|
|
(
|
|
"\tadd %0, x0, x2\n"
|
|
: "=r"(sp)
|
|
);
|
|
return sp;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
#ifdef __cplusplus
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
#undef EXTERN
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* __ARCH_RISCV_INCLUDE_RV32IM_ARCH_H */
|