73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/* Copyright (c) 2006 Tensilica Inc.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included
|
|
in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
|
|
/* Define macros for leaf function entry and return, supporting either the
|
|
* standard register windowed ABI or the non-windowed call0 ABI. These
|
|
* macros do not allocate any extra stack space, so they only work for
|
|
* leaf functions that do not need to spill anything to the stack. */
|
|
|
|
#include <xtensa/config/core-isa.h>
|
|
|
|
.macro leaf_entry reg, size
|
|
#if XCHAL_HAVE_WINDOWED && !__XTENSA_CALL0_ABI__
|
|
entry \reg, \size
|
|
#else
|
|
/* do nothing */
|
|
#endif
|
|
.endm
|
|
|
|
.macro leaf_return
|
|
#if XCHAL_HAVE_WINDOWED && !__XTENSA_CALL0_ABI__
|
|
retw
|
|
#else
|
|
ret
|
|
#endif
|
|
.endm
|
|
|
|
.macro src_b r, w0, w1
|
|
#ifdef __XTENSA_EB__
|
|
src \r, \w0, \w1
|
|
#else
|
|
src \r, \w1, \w0
|
|
#endif
|
|
.endm
|
|
|
|
.macro ssa8 r
|
|
#ifdef __XTENSA_EB__
|
|
ssa8b \r
|
|
#else
|
|
ssa8l \r
|
|
#endif
|
|
.endm
|
|
|
|
#if XCHAL_HAVE_BE
|
|
#define MASK0 0xff000000
|
|
#define MASK1 0x00ff0000
|
|
#define MASK2 0x0000ff00
|
|
#define MASK3 0x000000ff
|
|
#else
|
|
#define MASK0 0x000000ff
|
|
#define MASK1 0x0000ff00
|
|
#define MASK2 0x00ff0000
|
|
#define MASK3 0xff000000
|
|
#endif
|
|
|