blob: bad296eff5dda1443fa0862f2186df16077a8874 (
plain) (
tree)
|
|
/*
* 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.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#include <rtems/asm.h>
.align 4
.seg "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
SYM(_st8):
retl
stub %o1, [%o0]
SYM(_st_be16):
SYM(_st16):
retl
stuh %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]
|
