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/* FR30 system call emulation code
Copyright (C) 1998, 2010 Free Software Foundation, Inc.
Contributed by Cygnus Solutions. */
#include <sys/stat.h>
#include "../syscall.h"
int
_read (file, ptr, len)
int file;
char * ptr;
int len;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_read) : "r0");
asm ("int #10");
return;
}
int
_lseek (file, ptr, dir)
int file;
int ptr;
int dir;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_lseek) : "r0");
asm ("int #10");
return;
}
int
_write (file, ptr, len)
int file;
char * ptr;
int len;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_write) : "r0");
asm ("int #10");
return;
}
int
_open (path, flags)
const char * path;
int flags;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_open) : "r0");
asm ("int #10");
return;
}
int
_close (file)
int file;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_close) : "r0");
asm ("int #10");
return 0;
}
void
_exit (n)
int n;
{
asm ("ldi:8 %0, r0" :: "i" (SYS_exit) : "r0");
asm ("int #10");
}
caddr_t
_sbrk (incr)
int incr;
{
extern char end asm ("_end"); /* Defined by the linker */
extern int __stack; /* Defined by linker script. */
static char * heap_end;
char * prev_heap_end;
if (heap_end == NULL)
heap_end = & end;
prev_heap_end = heap_end;
#if 0
if (heap_end + incr > __stack)
{
_write ( 1, "_sbrk: Heap and stack collision\n", 32);
abort ();
}
#endif
heap_end += incr;
return (caddr_t) prev_heap_end;
}
int
_fstat (file, st)
int file;
struct stat * st;
{
st->st_mode = S_IFCHR;
return 0;
}
int
_unlink ()
{
return -1;
}
int
_isatty (fd)
int fd;
{
return 0;
}
int
_raise ()
{
return 0;
}
int
_times ()
{
return 0;
}
int
_kill (pid, sig)
int pid;
int sig;
{
return 0;
}
int
_getpid (void)
{
return 0;
}
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