mirror of
https://github.com/netwide-assembler/nasm.git
synced 2024-11-27 08:10:07 +08:00
290b4cb3a4
Add general support in the function parser for "integer functions" (actually implemented as special unary operators, then wrapped in macros) and implement a family of integer logarithms. The only difference is the behavior on a non-power-of-two argument: ilog2[e] -- throw an error ilog2w -- throw a warning ilog2f -- round down to power of 2 ilog2c -- round up to power of 2 This is useful for back-converting from masks to bit values. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
109 lines
2.4 KiB
Plaintext
109 lines
2.4 KiB
Plaintext
## --------------------------------------------------------------------------
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##
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## Copyright 1996-2012 The NASM Authors - All Rights Reserved
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## See the file AUTHORS included with the NASM distribution for
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## the specific copyright holders.
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##
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## Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following
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## conditions are met:
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##
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## * Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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## * Redistributions in binary form must reproduce the above
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## copyright notice, this list of conditions and the following
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## disclaimer in the documentation and/or other materials provided
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## with the distribution.
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##
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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## CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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## INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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## MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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## DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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## NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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## LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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## CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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## OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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## EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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##
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## --------------------------------------------------------------------------
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#
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# Tokens other than instructions and registers
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#
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% TOKEN_PREFIX, 0, P_*
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a16
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a32
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a64
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asp
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lock
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o16
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o32
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o64
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osp
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rep
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repe
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repne
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repnz
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repz
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times
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wait
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xacquire
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xrelease
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% TOKEN_SPECIAL, 0, S_*
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abs
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byte
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dword
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far
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long
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near
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nosplit
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oword
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qword
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rel
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short
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strict
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to
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tword
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word
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yword
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% TOKEN_FLOAT, 0, 0
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__infinity__
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__nan__
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__qnan__
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__snan__
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% TOKEN_FLOATIZE, 0, FLOAT_{__float*__}
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__float8__
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__float16__
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__float32__
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__float64__
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__float80m__
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__float80e__
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__float128l__
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__float128h__
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% TOKEN_STRFUNC, 0, STRFUNC_{__*__}
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__utf16__
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__utf16le__
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__utf16be__
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__utf32__
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__utf32le__
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__utf32be__
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% TOKEN_IFUNC, 0, IFUNC_{__*__}
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__ilog2e__
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__ilog2w__
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__ilog2f__
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__ilog2c__
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% TOKEN_*, 0, 0
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seg
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wrt
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