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91 lines
2.0 KiB
91 lines
2.0 KiB
/* 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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