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