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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [libgloss/] [mips/] [dvemon.c] - Rev 310
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/* dve.c -- I/O code for the Densan DVE-R3900 board. * * Copyright (c) 1998, 1999 Cygnus Support * * The authors hereby grant permission to use, copy, modify, distribute, * and license this software and its documentation for any purpose, provided * that existing copyright notices are retained in all copies and that this * notice is included verbatim in any distributions. No written agreement, * license, or royalty fee is required for any of the authorized uses. * Modifications to this software may be copyrighted by their authors * and need not follow the licensing terms described here, provided that * the new terms are clearly indicated on the first page of each file where * they apply. */ /* Flag indicating that we are being debugged by GDB. If set, preceded each character output to the console with a ^O, so that GDB will print it instead of discarding it. */ int output_debug = 1; /* Monitor "ci" function (console input) */ typedef int (*cifunc)(int waitflag); #ifdef __mips64 static cifunc ci = (cifunc) 0xffffffffbfc00010L; #else static cifunc ci = (cifunc) 0xbfc00010; #endif #define WAIT 1 #define NOWAIT 0 #define NOCHAR (-1) /* Monitor "co" function (console output) */ typedef void (*cofunc)(int c); #ifdef __mips64 static cofunc co = (cofunc) 0xffffffffbfc00018L; #else static cofunc co = (cofunc) 0xbfc00018; #endif /* outbyte -- shove a byte out the serial port; used by write.c. */ int outbyte(byte) unsigned char byte; { /* Output a ^O prefix so that GDB won't discard the output. */ if (output_debug) co (0x0f); co (byte); return byte; } /* inbyte -- get a byte from the serial port; used by read.c. */ unsigned char inbyte() { return (unsigned char) ci (WAIT); } /* Structure filled in by get_mem_info. Only the size field is actually used (by sbrk), so the others aren't even filled in. */ struct s_mem { unsigned int size; unsigned int icsize; unsigned int dcsize; }; void get_mem_info (mem) struct s_mem *mem; { mem->size = 0x1000000; /* DVE-R3900 board has 16 MB of RAM */ }
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