58 lines
2.4 KiB
C
58 lines
2.4 KiB
C
/*
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* Copyright (c) 2010, Mariano Alvira <mar@devl.org> and other contributors
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* to the MC1322x project (http://mc1322x.devl.org)
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* All rights reserved.
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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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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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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* This file is part of libmc1322x: see http://mc1322x.devl.org
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* for details.
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*
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*
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*/
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#ifndef UTILS_H
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#define UTILS_H
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#define mem32(x) ((volatile uint32_t *)(x))
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#define mem16(x) ((volatile uint16_t *)(x))
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#define CAT2(x, y, z) x##y##z
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#define STR(x) #x
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#define STR2(x) STR(x)
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#define bit(bit) (1 << bit)
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#define bit_is_set(val, bit) (((val & (1 << bit)) >> bit) == 1)
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#define clear_bit(val, bit) (val = (val & ~(1 << bit)))
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#define set_bit(val, bit) (val = (val | (1 << bit)))
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#define ones(num) ( (1ULL << num) - 1 )
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#define bit_mask(length, shift) (ones(length) << shift)
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#define get_field(val, field) ((val & field##_MASK) >> field)
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//#define bitfield(name, length, shift) ( #define #name length #define #name##_MASK bit_mask(length, shift))
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#define bitfield(name, length, shift) ( define #name length )
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#endif /* UTILS_H */
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