75dc0fdd38
be used on the host system (and not installed on the device, if required). The GPL'd one is still available if there are any devices that need it (make universe passes with it, including kernels that use fdt, but there may be some out-of-tree ones). WITH_GPL_DTC can be used to select the old one, for now. Probably won't be MFC'd, but we'll remove the GPL'd version in head after the new one has had a lot more testing and ship it in 10.0.
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
/*-
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* Copyright (c) 2013 David Chisnall
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* All rights reserved.
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
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* ("CTSRD"), as part of the DARPA CRASH research programme.
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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 conditions
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* are met:
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _UTIL_HH_
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#define _UTIL_HH_
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#include <vector>
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// If we aren't using C++11, then just ignore static asserts.
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#if __cplusplus < 201103L
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#ifndef static_assert
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#define static_assert(x, y) ((void)0)
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#endif
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#endif
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namespace dtc {
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/**
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* Type for a buffer of bytes. This is used for a lot of short-lived temporary
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* variables, so may eventually be changed to something like LLVM's
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* SmallVector, but currently the program runs in a tiny fraction of a second,
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* so this is not an issue.
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*/
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typedef std::vector<uint8_t> byte_buffer;
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/**
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* Helper function to push a big endian value into a byte buffer. We use
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* native-endian values for all of the in-memory data structures and only
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* transform them into big endian form for output.
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*/
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template<typename T>
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inline void push_big_endian(byte_buffer &v, T val)
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{
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static_assert(sizeof(T) > 1,
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"Big endian doesn't make sense for single-byte values");
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for (int bit=(sizeof(T) - 1)*8 ; bit>=0 ; bit-= 8)
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{
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v.push_back((val >> bit) & 0xff);
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}
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}
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/**
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* Simple inline non-locale-aware check that this is a valid ASCII
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* digit.
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*/
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inline bool isdigit(char c)
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{
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return (c >= '0') && (c <= '9');
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}
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/**
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* Simple inline non-locale-aware check that this is a valid ASCII
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* hex digit.
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*/
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inline bool ishexdigit(char c)
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{
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return ((c >= '0') && (c <= '9')) || ((c >= 'a') && (c <= 'f')) ||
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((c >= 'A') && (c <= 'Z'));
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}
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}// namespace dtc
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#endif // !_UTIL_HH_
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