| /* 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; |
| } |