163 lines
2.5 KiB
C
163 lines
2.5 KiB
C
/* FR30 system call emulation code
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Copyright (C) 1998 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <sys/stat.h>
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#include "../syscall.h"
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int
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_read (file, ptr, len)
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int file;
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char * ptr;
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int len;
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{
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asm ("ldi:8 %0, r0" :: "i" (SYS_read) : "r0");
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asm ("int #10");
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return;
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}
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int
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_lseek (file, ptr, dir)
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int file;
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int ptr;
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int dir;
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{
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asm ("ldi:8 %0, r0" :: "i" (SYS_lseek) : "r0");
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asm ("int #10");
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return;
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}
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int
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_write (file, ptr, len)
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int file;
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char * ptr;
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int len;
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{
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asm ("ldi:8 %0, r0" :: "i" (SYS_write) : "r0");
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asm ("int #10");
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return;
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}
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int
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_open (path, flags)
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const char * path;
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int flags;
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{
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asm ("ldi:8 %0, r0" :: "i" (SYS_open) : "r0");
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asm ("int #10");
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return;
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}
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int
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_close (file)
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int file;
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{
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asm ("ldi:8 %0, r0" :: "i" (SYS_close) : "r0");
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asm ("int #10");
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return 0;
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}
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void
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_exit (n)
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int n;
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{
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asm ("ldi:8 %0, r0" :: "i" (SYS_exit) : "r0");
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asm ("int #10");
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}
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caddr_t
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_sbrk (incr)
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int incr;
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{
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extern char end asm ("_end"); /* Defined by the linker */
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extern int __stack; /* Defined by linker script. */
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static char * heap_end;
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char * prev_heap_end;
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if (heap_end == NULL)
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heap_end = & end;
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prev_heap_end = heap_end;
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#if 0
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if (heap_end + incr > __stack)
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{
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_write ( 1, "_sbrk: Heap and stack collision\n", 32);
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abort ();
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}
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#endif
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heap_end += incr;
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return (caddr_t) prev_heap_end;
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}
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int
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_fstat (file, st)
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int file;
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struct stat * st;
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{
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st->st_mode = S_IFCHR;
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return 0;
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}
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int
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_unlink ()
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{
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return -1;
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}
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int
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_isatty (fd)
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int fd;
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{
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return 0;
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}
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int
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_raise ()
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{
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return 0;
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}
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int
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_times ()
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{
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return 0;
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}
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int
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_kill (pid, sig)
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int pid;
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int sig;
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{
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return 0;
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}
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int
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_getpid (void)
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{
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return 0;
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}
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