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/* ml-objects.h
*
* COPYRIGHT (c) 1992 AT&T Bell Laboratories
*
* Macros and routines for allocating heap objects.
*/
#ifndef _ML_OBJECTS_
#define _ML_OBJECTS_
#ifndef _ML_BASE_
#include "ml-base.h"
#endif
#ifndef _ML_VALUES_
#include "ml-values.h"
#endif
#ifndef _ML_STATE_
#include "ml-state.h"
#endif
#ifndef _TAGS_
#include "tags.h"
#endif
/* extract info from objects */
#define OBJ_DESC(OBJ) REC_SEL((OBJ), -1)
#define OBJ_LEN(OBJ) GET_LEN(OBJ_DESC(OBJ))
#define OBJ_TAG(OBJ) GET_TAG(OBJ_DESC(OBJ))
/** The size of an ML record in bytes (including descriptor) **/
#define REC_SZB(n) (((n)+1)*sizeof(ml_val_t))
/** heap allocation macros **/
#define ML_AllocWrite(msp, i, x) ((((msp)->ml_allocPtr))[(i)] = (x))
#define ML_Alloc(msp, n) ( \
((msp)->ml_allocPtr += ((n)+1)), \
PTR_CtoML((msp)->ml_allocPtr - (n)))
#define REF_ALLOC(msp, r, a) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
*__p++ = DESC_ref; \
*__p++ = (a); \
(r) = PTR_CtoML(__msp->ml_allocPtr + 1); \
__msp->ml_allocPtr = __p; \
}
#define REC_ALLOC1(msp, r, a) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
*__p++ = MAKE_DESC(1, DTAG_record); \
*__p++ = (a); \
(r) = PTR_CtoML(__msp->ml_allocPtr + 1); \
__msp->ml_allocPtr = __p; \
}
#define REC_ALLOC2(msp, r, a, b) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
*__p++ = DESC_pair; \
*__p++ = (a); \
*__p++ = (b); \
(r) = PTR_CtoML(__msp->ml_allocPtr + 1); \
__msp->ml_allocPtr = __p; \
}
#define REC_ALLOC3(msp, r, a, b, c) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
*__p++ = MAKE_DESC(3, DTAG_record); \
*__p++ = (a); \
*__p++ = (b); \
*__p++ = (c); \
(r) = PTR_CtoML(__msp->ml_allocPtr + 1); \
__msp->ml_allocPtr = __p; \
}
#define REC_ALLOC4(msp, r, a, b, c, d) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
*__p++ = MAKE_DESC(4, DTAG_record); \
*__p++ = (a); \
*__p++ = (b); \
*__p++ = (c); \
*__p++ = (d); \
(r) = PTR_CtoML(__msp->ml_allocPtr + 1); \
__msp->ml_allocPtr = __p; \
}
#define REC_ALLOC5(msp, r, a, b, c, d, e) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
*__p++ = MAKE_DESC(5, DTAG_record); \
*__p++ = (a); \
*__p++ = (b); \
*__p++ = (c); \
*__p++ = (d); \
*__p++ = (e); \
(r) = PTR_CtoML(__msp->ml_allocPtr + 1); \
__msp->ml_allocPtr = __p; \
}
#define REC_ALLOC6(msp, r, a, b, c, d, e, f) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
*__p++ = MAKE_DESC(6, DTAG_record); \
*__p++ = (a); \
*__p++ = (b); \
*__p++ = (c); \
*__p++ = (d); \
*__p++ = (e); \
*__p++ = (f); \
(r) = PTR_CtoML(__msp->ml_allocPtr + 1); \
__msp->ml_allocPtr = __p; \
}
#define SEQHDR_ALLOC(msp, r, desc, data, len) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
*__p++ = (desc); \
*__p++ = (data); \
*__p++ = INT_CtoML(len); \
(r) = PTR_CtoML(__msp->ml_allocPtr + 1); \
__msp->ml_allocPtr = __p; \
}
#ifdef ALIGN_REALDS
#define REAL64_ALLOC(msp, r, d) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
__p = (ml_val_t *)((Addr_t)__p | WORD_SZB); \
*__p++ = DESC_reald; \
(r) = PTR_CtoML(__p); \
*(double *)__p = (d); \
__p += REALD_SZW; \
__msp->ml_allocPtr = __p; \
}
#else
#define REAL64_ALLOC(msp, r, d) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
__p = (ml_val_t *)((Addr_t)__p | WORD_SZB); \
(r) = PTR_CtoML(__p); \
*(double *)__p = (d); \
__p += REALD_SZW; \
__msp->ml_allocPtr = __p; \
}
#endif
#define EXN_ALLOC(msp, ex, id, val, where) \
REC_ALLOC3(msp, ex, id, val, where)
/** Boxed word values **/
#define WORD_MLtoC(w) (*PTR_MLtoC(Word_t, w))
#define WORD_ALLOC(msp, p, w) { \
ml_state_t *__msp = (msp); \
ml_val_t *__p = __msp->ml_allocPtr; \
*__p++ = MAKE_DESC(1, DTAG_raw32); \
*__p++ = (ml_val_t)(w); \
(p) = PTR_CtoML(__msp->ml_allocPtr + 1); \
__msp->ml_allocPtr = __p; \
}
#define REC_SELWORD(p, i) (*REC_SELPTR(Word_t, p, i))
#define INT32_MLtoC(i) (*PTR_MLtoC(Int32_t, i))
#define INT32_ALLOC(msp, p, i) WORD_ALLOC(msp, p, i)
#define REC_SELINT32(p, i) (*REC_SELPTR(Int32_t, p, i))
/** ML lists **/
#define LIST_hd(p) REC_SEL(p, 0)
#define LIST_tl(p) REC_SEL(p, 1)
#define LIST_nil INT_CtoML(0)
#define LIST_isNull(p) ((p) == LIST_nil)
#define LIST_cons(msp, r, a, b) REC_ALLOC2(msp, r, a, b)
/** ML references **/
#define DEREF(r) REC_SEL(r, 0)
#define ASSIGN(r, x) (PTR_MLtoC(ml_val_t, r)[0] = (x))
/** ML options **/
#define OPTION_NONE INT_CtoML(0)
#define OPTION_SOME(msp, r, a) REC_ALLOC1(msp, r, a)
#define OPTION_get(r) REC_SEL(r, 0)
/** external routines **/
extern ml_val_t ML_CString (ml_state_t *msp, const char *v);
extern ml_val_t ML_CStringList (ml_state_t *msp, char **strs);
extern ml_val_t ML_AllocString (ml_state_t *msp, int len);
extern ml_val_t ML_AllocCode (ml_state_t *msp, int len);
extern ml_val_t ML_AllocBytearray (ml_state_t *msp, int len);
extern ml_val_t ML_AllocRealdarray (ml_state_t *msp, int len);
extern ml_val_t ML_AllocArray (ml_state_t *msp, int len, ml_val_t initVal);
extern ml_val_t ML_AllocVector (ml_state_t *msp, int len, ml_val_t initVal);
extern ml_val_t ML_AllocRaw32 (ml_state_t *msp, int len);
extern void ML_ShrinkRaw32 (ml_state_t *msp, ml_val_t v, int nWords);
extern ml_val_t ML_AllocRaw64 (ml_state_t *msp, int len);
extern ml_val_t ML_SysConst (ml_state_t *msp, sysconst_tbl_t *tbl, int id);
extern ml_val_t ML_SysConstList (ml_state_t *msp, sysconst_tbl_t *tbl);
extern ml_val_t ML_AllocCData (ml_state_t *msp, int nbytes);
extern ml_val_t ML_CData (ml_state_t *msp, void *data, int nbytes);
extern ml_val_t BuildLiterals (ml_state_t *msp, Byte_t *lits, int len);
extern ml_val_t _ML_string0[];
extern ml_val_t _ML_vector0[];
#define ML_string0 PTR_CtoML(_ML_string0+1)
#define ML_vector0 PTR_CtoML(_ML_vector0+1)
#endif /* !_ML_OBJECTS_ */
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