20000317 sourceware import

libgloss/libnosys/sbrk.c

@@ -0,0 +1,27 @@
+/*
+ * Version of sbrk for no operating system.
+ */
+
+#include "config.h"
+#include <_ansi.h>
+#include <_syslist.h>
+#include <sys/types.h>
+#include <errno.h>
+#undef errno
+extern int errno;
+
+caddr_t 
+_DEFUN (_sbrk, (incr),
+        int incr)
+{ 
+   extern char end; /* set by linker */
+   static char *heap_end; 
+   char *prev_heap_end; 
+
+   if (heap_end == 0) { 
+      heap_end = &end; 
+   } 
+   prev_heap_end = heap_end; 
+   heap_end += incr; 
+   return (caddr_t) prev_heap_end; 
+}