92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2018 Synopsys, Inc. All rights reserved.
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*
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*/
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#ifndef HEXDUMP_H
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#define HEXDUMP_H
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#include <linux/ctype.h>
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#include <linux/types.h>
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enum {
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DUMP_PREFIX_NONE,
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DUMP_PREFIX_ADDRESS,
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DUMP_PREFIX_OFFSET
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};
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extern const char hex_asc[];
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#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
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#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
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static inline char *hex_byte_pack(char *buf, u8 byte)
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{
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*buf++ = hex_asc_hi(byte);
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*buf++ = hex_asc_lo(byte);
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return buf;
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}
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/**
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* hex_to_bin - convert a hex digit to its real value
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* @ch: ascii character represents hex digit
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*
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* hex_to_bin() converts one hex digit to its actual value or -1 in case of bad
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* input.
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*/
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static inline int hex_to_bin(char ch)
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{
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if ((ch >= '0') && (ch <= '9'))
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return ch - '0';
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ch = tolower(ch);
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if ((ch >= 'a') && (ch <= 'f'))
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return ch - 'a' + 10;
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return -1;
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}
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/**
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* hex2bin - convert an ascii hexadecimal string to its binary representation
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* @dst: binary result
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* @src: ascii hexadecimal string
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* @count: result length
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*
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* Return 0 on success, -1 in case of bad input.
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*/
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static inline int hex2bin(u8 *dst, const char *src, size_t count)
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{
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while (count--) {
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int hi = hex_to_bin(*src++);
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int lo = hex_to_bin(*src++);
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if ((hi < 0) || (lo < 0))
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return -1;
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*dst++ = (hi << 4) | lo;
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}
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return 0;
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}
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/**
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* bin2hex - convert binary data to an ascii hexadecimal string
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* @dst: ascii hexadecimal result
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* @src: binary data
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* @count: binary data length
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*/
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static inline char *bin2hex(char *dst, const void *src, size_t count)
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{
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const unsigned char *_src = src;
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while (count--)
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dst = hex_byte_pack(dst, *_src++);
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return dst;
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}
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int hex_dump_to_buffer(const void *buf, size_t len, int rowsize, int groupsize,
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char *linebuf, size_t linebuflen, bool ascii);
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void print_hex_dump(const char *prefix_str, int prefix_type, int rowsize,
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int groupsize, const void *buf, size_t len, bool ascii);
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void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
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const void *buf, size_t len);
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#endif /* HEXDUMP_H */
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