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39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/** @file Set of macros for accessing integers of various sizes and endianness
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in host memory.
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*/
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#ifndef MEM_READ_WRITE_H
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#define MEM_READ_WRITE_H
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#include <cinttypes>
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#include "endianswap.h"
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/* read an aligned big-endian WORD (16bit) */
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#define READ_WORD_BE_A(addr) (BYTESWAP_16(*((uint16_t *)((addr)))))
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/* read an aligned big-endian DWORD (32bit) */
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#define READ_DWORD_BE_A(addr) (BYTESWAP_32(*((uint32_t *)((addr)))))
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/* read an aligned little-endian WORD (16bit) */
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#define READ_WORD_LE_A(addr) (*(uint16_t *)((addr)))
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/* read an aligned little-endian DWORD (32bit) */
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#define READ_DWORD_LE_A(addr) (*(uint32_t *)((addr)))
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/* read an unaligned big-endian WORD (16bit) */
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#define READ_WORD_BE_U(addr) (((addr)[0] << 8) | (addr)[1])
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/* read an unaligned big-endian DWORD (32bit) */
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#define READ_DWORD_BE_U(addr) (((addr)[0] << 24) | ((addr)[1] << 16) | \
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((addr)[2] << 8) | (addr)[3])
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/* read an unaligned little-endian WORD (16bit) */
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#define READ_WORD_LE_U(addr) (((addr)[1] << 8) | (ptr)[0])
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/* read an unaligned little-endian DWORD (32bit) */
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#define READ_DWORD_LE_U(addr) (((addr)[3] << 24) | ((addr)[2] << 16) | \
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((addr)[1] << 8) | (addr)[0])
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#endif /* MEM_READ_WRITE_H */
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