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/* Copyright (c) 1995 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.
*
* fake unix routines for sparclite and remote debugger
* Many of these routines just substitute an appropriate error status,
* if you want some kind of file system access, you'll have to fill them in...
* sbrk on the other hand is functional (malloc uses it) but it doesn't do
* any checking for lack of memory.
* kill and _exit could get more real implementations, as well.
*/
#include <sys/stat.h>
int
fstat(int _fd, struct stat* _sbuf)
{
/* this is used in a few places in stdio... */
/* just error, so they assume a pipe */
return -1;
}
int
isatty(int _fd)
{
return 1;
}
int
close(int _fd)
{
/* return value usually ignored anyhow */
return 0;
}
int
open(char *filename)
{
/* always fail */
return -1;
}
int
getpid() {
return 1;
}
int
kill(int pid) {
/* if we knew how to nuke the board, we would... */
return 0;
}
void
_exit(int status) {
/* likewise... */
return;
}
int
lseek(int _fd, off_t offset, int whence)
{
/* nothing is ever seekable */
return -1;
}
extern char end;
char*
sbrk(int incr)
{
static char* base;
char *b;
if(!base) base = &end;
b = base;
base += incr;
return b;
}
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