-/* vm/jit/stack.h - stack analysis header
+/* src/vm/jit/stack.h - stack analysis header
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
- C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
- E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
- J. Wenninger, Institut f. Computersprachen - TU Wien
+ Copyright (C) 1996-2005, 2006, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Christian Thalinger
-
- Changes: Christian Ullrich
- Edwin Steiner
-
- $Id: stack.h 5655 2006-10-03 20:44:46Z edwin $
-
*/
#ifndef _STACK_H
#define _STACK_H
+/* forward typedefs ***********************************************************/
+
+typedef struct stackelement_t stackelement_t;
+
+
#include "config.h"
+#include <stdint.h>
+
#include "vm/types.h"
-#include "vm/exceptions.h"
#include "vm/global.h"
-#include "vm/jit/jit.h"
+
+#include "vm/jit/jit.hpp"
#include "vm/jit/reg.h"
+/* stack element structure ****************************************************/
+
+/* flags */
+
+#define SAVEDVAR 1 /* variable has to survive method invocations */
+#define INMEMORY 2 /* variable stored in memory */
+#define SAVREG 4 /* allocated to a saved register */
+#define ARGREG 8 /* allocated to an arg register */
+#define PASSTHROUGH 32 /* stackslot was passed-through by an ICMD */
+#define PREALLOC 64 /* preallocated var like for ARGVARS. Used */
+ /* with the new var system */
+#define INOUT 128 /* variable is an invar or/and an outvar */
+
+#define IS_SAVEDVAR(x) ((x) & SAVEDVAR)
+#define IS_INMEMORY(x) ((x) & INMEMORY)
+
+
+/* variable kinds */
+
+#define UNDEFVAR 0 /* stack slot will become temp during regalloc*/
+#define TEMPVAR 1 /* stack slot is temp register */
+#define STACKVAR 2 /* stack slot is numbered stack slot */
+#define LOCALVAR 3 /* stack slot is local variable */
+#define ARGVAR 4 /* stack slot is argument variable */
+
+
+struct stackelement_t {
+ stackelement_t *prev; /* pointer to next element towards bottom */
+ instruction *creator; /* instruction that created this element */
+ s4 type; /* slot type of stack element */
+ s4 flags; /* flags (SAVED, INMEMORY) */
+ s4 varkind; /* kind of variable or register */
+ s4 varnum; /* number of variable */
+};
+
+
/* macros used internally by analyse_stack ************************************/
/*--------------------------------------------------*/
#define NEWSTACK0(s) NEWSTACK(s,UNDEFVAR,0)
-/* external macros ************************************************************/
-
-#define BLOCK_OF(index) \
- (jd->new_basicblocks + jd->new_basicblockindex[index])
-
-
/* function prototypes ********************************************************/
+#ifdef __cplusplus
+extern "C" {
+#endif
+
bool stack_init(void);
bool stack_analyse(jitdata *jd);
+void stack_javalocals_store(instruction *iptr, s4 *javalocals);
+
+#ifdef __cplusplus
+}
+#endif
+
#endif /* _STACK_H */