51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
#ifndef VSPRINTF_H
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#define VSPRINTF_H
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/** @file
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*
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* printf and friends.
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*
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* Etherboot's printf() functions understand the following format
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* specifiers:
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*
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* - Hexadecimal integers
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* - @c %[#]x - 4 bytes int (8 hex digits, lower case)
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* - @c %[#]X - 4 bytes int (8 hex digits, upper case)
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* - @c %[#]lx - 8 bytes long (16 hex digits, lower case)
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* - @c %[#]lX - 8 bytes long (16 hex digits, upper case)
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* - @c %[#]hx - 2 bytes int (4 hex digits, lower case)
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* - @c %[#]hX - 2 bytes int (4 hex digits, upper case)
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* - @c %[#]hhx - 1 byte int (2 hex digits, lower case)
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* - @c %[#]hhX - 1 byte int (2 hex digits, upper case)
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* .
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* If the optional # prefix is specified, the output will
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* be prefixed with 0x (or 0X).
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*
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* - Other integers
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* - @c %d - decimal int
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* .
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* Note that any width specification (e.g. the @c 02 in @c %02x)
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* will be accepted but ignored.
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*
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* - Strings and characters
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* - @c %c - char
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* - @c %s - string
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* - @c %m - error message text (i.e. strerror(errno))
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*
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* - Etherboot-specific specifiers
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* - @c %@ - IP address in ddd.ddd.ddd.ddd notation
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* - @c %! - MAC address in xx:xx:xx:xx:xx:xx notation
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*
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*
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* @note Unfortunately, we cannot use <tt> __attribute__ (( format (
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* printf, ... ) )) </tt> to get automatic type checking on arguments,
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* because we use non-standard format characters such as @c %! and
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* @c %@.
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*
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*/
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extern int sprintf ( char *buf, const char *fmt, ... );
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extern void printf ( const char *fmt, ... );
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#endif /* VSPRINTF_H */
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