//
// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
//
-// This file may be distributed under the terms of the GNU GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
#ifndef __TYPES_H
#define __TYPES_H
};
#define __VISIBLE __attribute__((externally_visible))
+
#if MODE16 == 1
// Notes a function as externally visible in the 16bit code chunk.
-#define VISIBLE16 __VISIBLE
+# define VISIBLE16 __VISIBLE
// Notes a function as externally visible in the 32bit code chunk.
-#define VISIBLE32
+# define VISIBLE32
+// Designate a variable as (only) visible to 16bit code.
+# define VAR16 __attribute__((section(".data.var16")))
+// Designate a variable as visible to both 32bit and 16bit code.
+# define VAR16_32 VAR16 __VISIBLE
+// Designate top-level assembler as 16bit only.
+# define ASM16(code) asm(code)
#else
-#define VISIBLE16
-#define VISIBLE32 __VISIBLE
+# define VISIBLE16
+# define VISIBLE32 __VISIBLE
+# define VAR16 __attribute__((section(".discard.var16")))
+# define VAR16_32 VAR16 __VISIBLE __attribute__((weak))
+# define ASM16(code)
#endif
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)