import newlib-2000-02-17 snapshotcvs/SNAPSHOT

1 files changed, 28 insertions, 0 deletions

diff --git a/newlib/libc/sys/h8300hms/sbrk.c b/newlib/libc/sys/h8300hms/sbrk.c
new file mode 100644
index 00000000000..1456a67eb81
--- /dev/null
+++ b/newlib/libc/sys/h8300hms/sbrk.c
@@ -0,0 +1,28 @@
+#include <_ansi.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+register char *stack_ptr asm ("sp");
+
+caddr_t 
+  _sbrk(incr)
+     int incr;
+{
+  extern char end;		/* Defined by the linker */
+  static char *heap_end;
+  char *prev_heap_end;
+
+  if (heap_end == 0) 
+    {
+      heap_end = &end;
+    }
+  prev_heap_end = heap_end;
+  if (heap_end + incr > stack_ptr)
+    {
+      _write (1, "Heap and stack collision\n", 25);
+      abort ();
+    }
+  heap_end += incr;
+  return (caddr_t)prev_heap_end;
+}
+