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The LXR Cross Referencer for SOS

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001 /* Copyright (C) 2004  David Decotigny
002 
003    This program is free software; you can redistribute it and/or
004    modify it under the terms of the GNU General Public License
005    as published by the Free Software Foundation; either version 2
006    of the License, or (at your option) any later version.
007    
008    This program is distributed in the hope that it will be useful,
009    but WITHOUT ANY WARRANTY; without even the implied warranty of
010    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
011    GNU General Public License for more details.
012    
013    You should have received a copy of the GNU General Public License
014    along with this program; if not, write to the Free Software
015    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
016    USA. 
017 */
018 #ifndef _SOS_BOCHS_H_
019 #define _SOS_BOCHS_H_
020 
021 /**
022  * @file bochs.h
023  *
024  * If you compiled Bochs with the --enable-e9-hack, then any character
025  * printed to the 0xE9 I/O port is printed to the xterm that is
026  * running Bochs. This may appear to be a detail, but in fact, this
027  * functionnality is *VERY* precious for debugging purposes. This
028  * """driver""" handles this feature.
029  */
030 
031 #include <sos/errno.h>
032 #include <sos/types.h>
033 
034 sos_ret_t sos_bochs_setup(void);
035 
036 sos_ret_t sos_bochs_putchar(char c);
037 
038 sos_ret_t sos_bochs_putstring(const char* str);
039 
040 /** Print the least signficant 32 (nbytes == 4), 24 (nbytes == 3), 16
041     (nbytes == 2) or 8 (nbytes == 1) bits of val in hexadecimal. */
042 sos_ret_t sos_bochs_puthex(unsigned val, int nbytes);
043 
044 /** hexdump-style pretty printing */
045 sos_ret_t sos_bochs_hexdump(const void* addr, int nbytes);
046 
047 /**
048  * Print the formatted string. Very restricted version of printf(3):
049  * 1/ can print max 255 chars, 2/ supports only %d/%i, %c, %s, %x
050  * without any support for flag charachters (eg %08x).
051  */
052 sos_ret_t sos_bochs_printf(const char *format, /* args */...)
053      __attribute__ ((format (printf, 1, 2)));
054 
055 #endif

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