70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/*
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* This file is part of patchelfcrc.
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* Copyright (c) 2022 Mario Hüttel.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 only.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _CRC_OUTPUT_STRUCT_H_
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#define _CRC_OUTPUT_STRUCT_H_
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#include <stdint.h>
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/**
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* @brief Expected size of @ref crc_out_struct_32bit.
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* @note If the size of the structure does not match this number, structure padding occured which should not happen.
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*/
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#define CRC_OUT_STRUCT_SIZE_32BIT 12u
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/**
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* @brief output structure of CRCs in a 32bit executable
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*/
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struct crc_out_struct_32bit {
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uint32_t start_address; /**< @brief Start address of struct*/
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uint32_t length; /**< @brief Length of section in bytes */
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uint32_t crc; /**< @brief LSB aligned CRC */
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};
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/**
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* @brief Expected size of @ref crc_out_struct_64bit.
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* @note If the size of the structure does not match this number, structure padding occured which should not happen.
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*/
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#define CRC_OUT_STRUCT_SIZE_64BIT 24u
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/**
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* @brief output structure of CRCs in a 64bit executable
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*/
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struct crc_out_struct_64bit {
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uint64_t start_address; /**< @brief Start address of struct*/
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uint64_t length; /**< @brief Length of section in bytes */
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uint32_t crc; /**< @brief LSB aligned CRC */
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uint32_t _unused_dummy; /**< @brief Dummy. Do not use, it prevents misalignments */
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};
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/**
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* @brief Trigger compile error if condition is false
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*/
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#define BUILD_ASSERT(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
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/**
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* @brief Statically check sizes of @ref crc_out_struct_32bit and @ref crc_out_struct_64bit
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* @note Place this at least once in your code to ensure the packing of the structures is correct
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*/
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#define CRC_OUT_CHECK_STRUCT_SIZES do { \
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BUILD_ASSERT(sizeof(struct crc_out_struct_64bit) != CRC_OUT_STRUCT_SIZE_64BIT); \
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BUILD_ASSERT(sizeof(struct crc_out_struct_32bit) != CRC_OUT_STRUCT_SIZE_32BIT); \
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} while(0)
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#endif /* _CRC_OUTPUT_STRUCT_H_ */
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