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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Optimized access routines for SPARC.
*
* Note the difference between byteorder.h (inlined functions) and access.S
* where the functions will be declared in the library archive librtemscpu.a.
* Function names starting with _ are in library and can be referenced by
* function pointers.
*
* _ldN, _stN standard machine endianess access (SPARC: big-endian)
* _ld_beN, _st_beN forced big-endian
* _ld_leN, _st_leN forced little-endian (defined in access_le.C)
*
* This file is written in assembly because the big-endian functions maps to
* machine dependant access methods, i.e. same function has two names.
*
* COPYRIGHT (c) 2011
* Aeroflex Gaisler.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <rtems/asm.h>
.align 4
.section ".text"
PUBLIC(_ld8)
PUBLIC(_ld16)
PUBLIC(_ld32)
PUBLIC(_ld64)
PUBLIC(_st8)
PUBLIC(_st16)
PUBLIC(_st32)
PUBLIC(_st64)
PUBLIC(_ld_be16)
PUBLIC(_ld_be32)
PUBLIC(_ld_be64)
PUBLIC(_st_be16)
PUBLIC(_st_be32)
PUBLIC(_st_be64)
SYM(_ld8):
retl
ldub [%o0], %o0
SYM(_ld_be16):
SYM(_ld16):
retl
lduh [%o0], %o0
SYM(_ld_be32):
SYM(_ld32):
retl
ld [%o0], %o0
SYM(_ld_be64):
SYM(_ld64):
retl
ldd [%o0], %o0
#if defined(__FIX_LEON3FT_B2BST)
SYM(_st8):
stub %o1, [%o0]
retl
nop
SYM(_st_be16):
SYM(_st16):
stuh %o1, [%o0]
retl
nop
SYM(_st_be32):
SYM(_st32):
st %o1, [%o0]
retl
nop
SYM(_st_be64):
SYM(_st64):
mov %o2, %o3
mov %o1, %o2
std %o2, [%o0]
retl
nop
#else
SYM(_st8):
retl
stb %o1, [%o0]
SYM(_st_be16):
SYM(_st16):
retl
sth %o1, [%o0]
SYM(_st_be32):
SYM(_st32):
retl
st %o1, [%o0]
SYM(_st_be64):
SYM(_st64):
mov %o2, %o3
mov %o1, %o2
retl
std %o2, [%o0]
#endif
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