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