include/libcpu/access.h

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  *  access.h  - access routines for SPARC. SPARC is big endian only.
0005  *
0006  *  COPYRIGHT (c) 2011
0007  *  Aeroflex Gaisler.
0008  *
0009  * Redistribution and use in source and binary forms, with or without
0010  * modification, are permitted provided that the following conditions
0011  * are met:
0012  * 1. Redistributions of source code must retain the above copyright
0013  *    notice, this list of conditions and the following disclaimer.
0014  * 2. Redistributions in binary form must reproduce the above copyright
0015  *    notice, this list of conditions and the following disclaimer in the
0016  *    documentation and/or other materials provided with the distribution.
0017  *
0018  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0019  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0020  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0021  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0022  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0023  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0024  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0025  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0026  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0027  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0028  * POSSIBILITY OF SUCH DAMAGE.
0029  */
0030
0031 #ifndef _LIBCPU_ACCESS_H
0032 #define _LIBCPU_ACCESS_H
0033
0034 #include <rtems/score/cpu.h>
0035
0036 #ifdef __cplusplus
0037 extern "C" {
0038 #endif
0039
0040 /* "Raw" access */
0041 extern uint8_t _ld8(uint8_t *addr);
0042 extern void _st8(uint8_t *addr, uint8_t val);
0043 extern uint16_t _ld16(uint16_t *addr);
0044 extern void _st16(uint16_t *addr, uint16_t val);
0045 extern uint32_t _ld32(uint32_t *addr);
0046 extern void _st32(uint32_t *addr, uint32_t val);
0047 extern uint64_t _ld64(uint64_t *addr);
0048 extern void _st64(uint64_t *addr, uint64_t val);
0049
0050 /* Aliases for Big Endian */
0051 extern uint16_t _ld_be16(uint16_t *addr);
0052 extern void _st_be16(uint16_t *addr, uint16_t val);
0053 extern uint32_t _ld_be32(uint32_t *addr);
0054 extern void _st_be32(uint32_t *addr, uint32_t val);
0055 extern uint64_t _ld_be64(uint64_t *addr);
0056 extern void _st_be64(uint64_t *addr, uint64_t val);
0057
0058 /* Little endian */
0059 extern uint16_t _ld_le16(uint16_t *addr);
0060 extern void _st_le16(uint16_t *addr, uint16_t val);
0061 extern uint32_t _ld_le32(uint32_t *addr);
0062 extern void _st_le32(uint32_t *addr, uint32_t val);
0063
0064 #ifdef __cplusplus
0065 }
0066 #endif
0067
0068 #endif