130 lines
1.4 KiB
C
130 lines
1.4 KiB
C
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#include <_ansi.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.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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size_t len;
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{
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return 0;
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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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return 0;
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}
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static
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writechar (c)
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char c;
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{
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register int n asm ("r3");
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n = c;
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asm ("clr.w r1;mov.w %0,r0; mov.w #6,r3; trapa #15": :"g" (n) : "r3","r1","r0");
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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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size_t len;
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{
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int todo;
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for (todo = 0; todo < len; todo++)
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{
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writechar (*ptr++);
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}
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return len;
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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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return -1;
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}
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caddr_t
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_sbrk (incr)
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size_t incr;
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{
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extern char end; /* Defined by the linker */
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static char *heap_end;
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char *prev_heap_end;
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if (heap_end == 0)
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{
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heap_end = &end;
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}
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prev_heap_end = heap_end;
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if (heap_end + incr > stack_ptr)
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{
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_write (1, "Heap and stack collision\n", 25);
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abort ();
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}
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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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isatty (file)
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int file;
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{
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return 1;
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}
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int
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_fstat (file, stat)
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int file;
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struct stat *stat;
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{
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stat->st_mode = S_IFCHR;
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return 0;
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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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return 0;
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}
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void
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_exit (status)
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int status;
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{
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asm (" mov.w #33,r3; trapa #15");
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}
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