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74 lines
2.2 KiB
74 lines
2.2 KiB
/**
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* @file macro.h
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* @brief useful things + Special asserts and macros
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*
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* DAPLink Interface Firmware
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* Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef VFS_MACRO_H
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#define VFS_MACRO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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// --------------- VFS macros and general purpose --------------------
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#define ELEMENTS_IN_ARRAY(array) (sizeof(array)/sizeof(array[0]))
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#define MB(size) ((size) * 1024 * 1024)
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#define KB(size) ((size) * 1024)
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#ifndef MIN
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef MAX
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#define MAX(a,b) ((a) > (b) ? (a) : (b))
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#endif
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#define ROUND_UP(value, boundary) ((value) + ((boundary) - (value)) % (boundary))
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#define ROUND_DOWN(value, boundary) ((value) - ((value) % (boundary)))
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// ---------- HELPERS FOR XMACROS -----------------
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#define XJOIN(a, b) a##b
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#define STR_(x) #x
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#define STR(x) STR_(x)
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// ---------- COMPILER SPECIAL MACROS -------------
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#define COMPILER_CONCAT_(a, b) a##b
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#define COMPILER_CONCAT(a, b) COMPILER_CONCAT_(a, b)
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// Divide by zero if the the expression is false. This
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// causes an error at compile time.
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//
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// The special value '__COUNTER__' is used to create a unique value to
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// append to 'compiler_assert_' to create a unique token. This prevents
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// conflicts resulting from the same enum being declared multiple times.
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#define COMPILER_ASSERT(e) enum { COMPILER_CONCAT(compiler_assert_, __COUNTER__) = 1/((e) ? 1 : 0) }
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#define __at(_addr) __attribute__ ((at(_addr)))
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#ifdef __cplusplus
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}
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#endif
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#endif
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