1 files changed, 78 insertions, 0 deletions
diff --git a/libgloss/xstormy16/eva_app.c b/libgloss/xstormy16/eva_app.c
new file mode 100644
index 000000000..f6069fc7c
--- /dev/null
+++ b/libgloss/xstormy16/eva_app.c
@@ -0,0 +1,78 @@
+/* eva_app.c -- Glue code for linking apps to run under GDB debugger control.
+ *
+ * Copyright (c) 2001 Red Hat, Inc.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "glue.h"
+
+typedef void (*write_proc_t)(char *buf, int nbytes);
+typedef int  (*read_proc_t)(char *buf, int nbytes);
+
+/* There is no "syscall", so we just call directly into the stub code
+   at fixed addresses. */
+#define STUB_WRITE(p,n) ((write_proc_t)0x8084)((p),(n))
+#define STUB_READ(p,n)  ((read_proc_t)0x8088)((p),(n))
+
+/*
+ * print -- do a raw print of a string
+ */ 
+void
+print(char *ptr)
+{
+  STUB_WRITE(ptr, strlen(ptr));
+}
+
+/*
+ * write -- write bytes to the serial port. Ignore fd, since
+ *          stdout and stderr are the same. Since we have no filesystem,
+ *          open will only return an error.
+ */
+int
+_write (int fd, char *buf, int nbytes)
+{
+  STUB_WRITE(buf, nbytes);
+  return (nbytes);
+}
+
+int
+_read (int fd, char *buf, int nbytes)
+{
+  return STUB_READ(buf, nbytes);
+}
+
+extern char _end[];
+#define HEAP_LIMIT ((char *)0xffff)
+
+void *
+_sbrk(int inc)
+{
+  static char *heap_ptr = _end;
+  void *base;
+
+  if (inc > (HEAP_LIMIT - heap_ptr))
+    return (void *)-1;
+
+  base = heap_ptr;
+  heap_ptr += inc;
+
+  return base;
+}
+
+void
+_exit(int n)
+{
+  while (1)
+   {
+     asm volatile ("nop");
+     asm volatile (".hword 0x0006");  /* breakpoint (special illegal insn) */
+   }
+}