joyent/node

/*
** Trace recorder (bytecode -> SSA IR).
** Copyright (C) 2005-2013 Mike Pall. See Copyright Notice in luajit.h
*/

#ifndef _LJ_RECORD_H
#define _LJ_RECORD_H

#include "lj_obj.h"
#include "lj_jit.h"

#if LJ_HASJIT
/* Context for recording an indexed load/store. */
typedef struct RecordIndex {
  TValue tabv;        /* Runtime value of table (or indexed object). */
  TValue keyv;        /* Runtime value of key. */
  TValue valv;        /* Runtime value of stored value. */
  TValue mobjv;        /* Runtime value of metamethod object. */
  GCtab *mtv;        /* Runtime value of metatable object. */
  cTValue *oldv;    /* Runtime value of previously stored value. */
  TRef tab;        /* Table (or indexed object) reference. */
  TRef key;        /* Key reference. */
  TRef val;        /* Value reference for a store or 0 for a load. */
  TRef mt;        /* Metatable reference. */
  TRef mobj;        /* Metamethod object reference. */
  int idxchain;        /* Index indirections left or 0 for raw lookup. */
} RecordIndex;

LJ_FUNC int lj_record_objcmp(jit_State *J, TRef a, TRef b,
                 cTValue *av, cTValue *bv);
LJ_FUNC TRef lj_record_constify(jit_State *J, cTValue *o);

LJ_FUNC void lj_record_call(jit_State *J, BCReg func, ptrdiff_t nargs);
LJ_FUNC void lj_record_tailcall(jit_State *J, BCReg func, ptrdiff_t nargs);
LJ_FUNC void lj_record_ret(jit_State *J, BCReg rbase, ptrdiff_t gotresults);

LJ_FUNC int lj_record_mm_lookup(jit_State *J, RecordIndex *ix, MMS mm);
LJ_FUNC TRef lj_record_idx(jit_State *J, RecordIndex *ix);

LJ_FUNC void lj_record_ins(jit_State *J);
LJ_FUNC void lj_record_setup(jit_State *J);
#endif

#endif