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Diffstat (limited to 'libgloss/mn10200/sbrk.c')
-rw-r--r--libgloss/mn10200/sbrk.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/libgloss/mn10200/sbrk.c b/libgloss/mn10200/sbrk.c
new file mode 100644
index 000000000..376fd3285
--- /dev/null
+++ b/libgloss/mn10200/sbrk.c
@@ -0,0 +1,31 @@
+#include <_ansi.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "trap.h"
+
+
+caddr_t
+_sbrk (size_t incr)
+{
+ extern char end; /* Defined by the linker */
+ static char *heap_end;
+ char *prev_heap_end;
+#if 0
+ char *sp = (char *)stack_ptr;
+#else
+ char *sp = (char *)&sp;
+#endif
+
+ if (heap_end == 0)
+ {
+ heap_end = &end;
+ }
+ prev_heap_end = heap_end;
+ heap_end += incr;
+ if (heap_end > sp)
+ {
+ _write (1, "Heap and stack collision\n", 25);
+ abort ();
+ }
+ return (caddr_t) prev_heap_end;
+}