[perl5.git] / bytecode.h

typedef char *pvcontents;
typedef char *strconst;
typedef U32 PV;
typedef char *op_tr_array;
typedef int comment;
typedef SV *svindex;
typedef OP *opindex;
typedef IV IV64;

EXT int iv_overflows INIT(0);

EXT SV *sv;
#ifndef USE_THREADS
EXT OP *op;
#endif
EXT XPV pv;

EXT void **obj_list;
EXT I32 obj_list_fill INIT(-1);

#ifdef INDIRECT_BGET_MACROS
#define FREAD(argp, len, nelem) bs.fread((char*)(argp),(len),(nelem),bs.data)
#define FGETC() bs.fgetc(bs.data)
#else
#define FREAD(argp, len, nelem) fread((argp), (len), (nelem), fp)
#define FGETC() getc(fp)
#endif /* INDIRECT_BGET_MACROS */

#define BGET_U32(arg)	FREAD(&arg, sizeof(U32), 1); arg = ntohl((U32)arg)
#define BGET_I32(arg)	FREAD(&arg, sizeof(I32), 1); arg = (I32)ntohl((U32)arg)
#define BGET_U16(arg)	FREAD(&arg, sizeof(U16), 1); arg = ntohs((U16)arg)
#define BGET_U8(arg)	arg = FGETC()

#if INDIRECT_BGET_MACROS
#define BGET_PV(arg)	do {		\
	BGET_U32(arg);			\
	if (arg)			\
	    bs.freadpv(arg, bs.data);	\
	else {				\
	    pv.xpv_pv = 0;		\
	    pv.xpv_len = 0;		\
	    pv.xpv_cur = 0;		\
	}				\
    } while (0)
#else
#define BGET_PV(arg)	do {			\
	BGET_U32(arg);				\
	if (arg) {				\
	    New(666, pv.xpv_pv, arg, char);	\
	    fread(pv.xpv_pv, 1, arg, fp);	\
	    pv.xpv_len = arg;			\
	    pv.xpv_cur = arg - 1;		\
	} else {				\
	    pv.xpv_pv = 0;			\
	    pv.xpv_len = 0;			\
	    pv.xpv_cur = 0;			\
	}					\
    } while (0)
#endif /* INDIRECT_BGET_MACROS */

#define BGET_comment(arg) \
	do { arg = FGETC(); } while (arg != '\n' && arg != EOF)

/*
 * In the following, sizeof(IV)*4 is just a way of encoding 32 on 64-bit-IV
 * machines such that 32-bit machine compilers don't whine about the shift
 * count being too high even though the code is never reached there.
 */
#define BGET_IV64(arg) do {				\
	U32 hi, lo;					\
	BGET_U32(hi);					\
	BGET_U32(lo);					\
	if (sizeof(IV) == 8)				\
	    arg = (IV) (hi << (sizeof(IV)*4) | lo);	\
	else if (((I32)hi == -1 && (I32)lo < 0)		\
		 || ((I32)hi == 0 && (I32)lo >= 0)) {	\
	    arg = (I32)lo;				\
	}						\
	else {						\
	    iv_overflows++;				\
	    arg = 0;					\
	}						\
    } while (0)

#define BGET_op_tr_array(arg) do {	\
	unsigned short *ary;		\
	int i;				\
	New(666, ary, 256, unsigned short); \
	FREAD(ary, 256, 2);		\
	for (i = 0; i < 256; i++)	\
	    ary[i] = ntohs(ary[i]);	\
	arg = (char *) ary;		\
    } while (0)

#define BGET_pvcontents(arg)	arg = pv.xpv_pv
#define BGET_strconst(arg)	do {	\
	for (arg = tokenbuf; (*arg = FGETC()); arg++) /* nothing */;	\
	arg = tokenbuf;			\
    } while (0)

#define BGET_double(arg)	do {	\
	char *str;			\
	BGET_strconst(str);		\
	arg = atof(str);		\
    } while (0)

#define BGET_objindex(arg) do {	\
	U32 ix;			\
	BGET_U32(ix);		\
	arg = obj_list[ix];	\
    } while (0)

#define BSET_ldspecsv(sv, arg) sv = specialsv_list[arg]
				    
#define BSET_sv_refcnt_add(svrefcnt, arg)	svrefcnt += arg
#define BSET_gp_refcnt_add(gprefcnt, arg)	gprefcnt += arg
#define BSET_gp_share(sv, arg)	do {	\
	gp_free((GV*)sv);		\
	GvGP(sv) = GvGP(arg);		\
    } while (0)

#define BSET_gv_fetchpv(sv, arg)	sv = (SV*)gv_fetchpv(arg, TRUE, SVt_PV)
#define BSET_gv_stashpv(sv, arg)	sv = (SV*)gv_stashpv(arg, TRUE)
#define BSET_sv_magic(sv, arg)		sv_magic(sv, Nullsv, arg, 0, 0)
#define BSET_mg_pv(mg, arg)	mg->mg_ptr = arg; mg->mg_len = pv.xpv_cur
#define BSET_sv_upgrade(sv, arg)	(void)SvUPGRADE(sv, arg)
#define BSET_xpv(sv)	do {	\
	SvPV_set(sv, pv.xpv_pv);	\
	SvCUR_set(sv, pv.xpv_cur);	\
	SvLEN_set(sv, pv.xpv_len);	\
    } while (0)
#define BSET_av_extend(sv, arg)	av_extend((AV*)sv, arg)

#define BSET_av_push(sv, arg)	av_push((AV*)sv, arg)
#define BSET_hv_store(sv, arg)	\
	hv_store((HV*)sv, pv.xpv_pv, pv.xpv_cur, arg, 0)
#define BSET_pv_free(pv)	Safefree(pv.xpv_pv)
#define BSET_pregcomp(o, arg) \
	((PMOP*)o)->op_pmregexp = arg ? \
		pregcomp(arg, arg + pv.xpv_cur, ((PMOP*)o)) : 0
#define BSET_newsv(sv, arg)	sv = NEWSV(666,0); SvUPGRADE(sv, arg)
#define BSET_newop(o, arg)	o = (OP*)safemalloc(optype_size[arg])
#define BSET_newopn(o, arg)	do {	\
	OP *oldop = o;			\
	BSET_newop(o, arg);		\
	oldop->op_next = o;		\
    } while (0)

#define BSET_ret(foo) return

/*
 * Kludge special-case workaround for OP_MAPSTART
 * which needs the ppaddr for OP_GREPSTART. Blech.
 */
#define BSET_op_type(o, arg)	do {	\
	o->op_type = arg;		\
	if (arg == OP_MAPSTART)		\
	    arg = OP_GREPSTART;		\
	o->op_ppaddr = ppaddr[arg];	\
    } while (0)
#define BSET_op_ppaddr(o, arg) croak("op_ppaddr not yet implemented")
#define BSET_curpad(pad, arg) pad = AvARRAY(arg)

#define BSET_OBJ_STORE(obj, ix)		\
	(I32)ix > obj_list_fill ?	\
	bset_obj_store(obj, (I32)ix) : (obj_list[ix] = obj)
Commit	Line	Data
a8a597b2 MB	1	typedef char *pvcontents;
	2	typedef char *strconst;
	3	typedef U32 PV;
	4	typedef char *op_tr_array;
	5	typedef int comment;
	6	typedef SV *svindex;
	7	typedef OP *opindex;
	8	typedef IV IV64;
	9
	10	EXT int iv_overflows INIT(0);
a8a597b2 MB	11
	12	EXT SV *sv;
	13	#ifndef USE_THREADS
	14	EXT OP *op;
	15	#endif
	16	EXT XPV pv;
	17
	18	EXT void **obj_list;
	19	EXT I32 obj_list_fill INIT(-1);
	20
	21	#ifdef INDIRECT_BGET_MACROS
	22	#define FREAD(argp, len, nelem) bs.fread((char*)(argp),(len),(nelem),bs.data)
	23	#define FGETC() bs.fgetc(bs.data)
	24	#else
	25	#define FREAD(argp, len, nelem) fread((argp), (len), (nelem), fp)
	26	#define FGETC() getc(fp)
	27	#endif /* INDIRECT_BGET_MACROS */
	28
	29	#define BGET_U32(arg) FREAD(&arg, sizeof(U32), 1); arg = ntohl((U32)arg)
	30	#define BGET_I32(arg) FREAD(&arg, sizeof(I32), 1); arg = (I32)ntohl((U32)arg)
	31	#define BGET_U16(arg) FREAD(&arg, sizeof(U16), 1); arg = ntohs((U16)arg)
	32	#define BGET_U8(arg) arg = FGETC()
	33
	34	#if INDIRECT_BGET_MACROS
	35	#define BGET_PV(arg) do { \
	36	BGET_U32(arg); \
	37	if (arg) \
	38	bs.freadpv(arg, bs.data); \
	39	else { \
	40	pv.xpv_pv = 0; \
	41	pv.xpv_len = 0; \
	42	pv.xpv_cur = 0; \
	43	} \
	44	} while (0)
	45	#else
	46	#define BGET_PV(arg) do { \
	47	BGET_U32(arg); \
	48	if (arg) { \
	49	New(666, pv.xpv_pv, arg, char); \
	50	fread(pv.xpv_pv, 1, arg, fp); \
	51	pv.xpv_len = arg; \
	52	pv.xpv_cur = arg - 1; \
	53	} else { \
	54	pv.xpv_pv = 0; \
	55	pv.xpv_len = 0; \
	56	pv.xpv_cur = 0; \
	57	} \
	58	} while (0)
	59	#endif /* INDIRECT_BGET_MACROS */
	60
	61	#define BGET_comment(arg) \
	62	do { arg = FGETC(); } while (arg != '\n' && arg != EOF)
	63
	64	/*
	65	* In the following, sizeof(IV)*4 is just a way of encoding 32 on 64-bit-IV
	66	* machines such that 32-bit machine compilers don't whine about the shift
	67	* count being too high even though the code is never reached there.
	68	*/
	69	#define BGET_IV64(arg) do { \
	70	U32 hi, lo; \
	71	BGET_U32(hi); \
	72	BGET_U32(lo); \
	73	if (sizeof(IV) == 8) \
	74	arg = (IV) (hi << (sizeof(IV)*4) \| lo); \
75	else if (((I32)hi == -1 && (I32)lo < 0) \
76	\|\| ((I32)hi == 0 && (I32)lo >= 0)) { \
77	arg = (I32)lo; \
78	} \
79	else { \
80	iv_overflows++; \
81	arg = 0; \
82	} \
83	} while (0)
84
85	#define BGET_op_tr_array(arg) do { \
86	unsigned short *ary; \
87	int i; \
88	New(666, ary, 256, unsigned short); \
89	FREAD(ary, 256, 2); \
90	for (i = 0; i < 256; i++) \
91	ary[i] = ntohs(ary[i]); \
92	arg = (char *) ary; \
93	} while (0)
94
95	#define BGET_pvcontents(arg) arg = pv.xpv_pv
96	#define BGET_strconst(arg) do { \
97	for (arg = tokenbuf; (arg = FGETC()); arg++) / nothing */; \
98	arg = tokenbuf; \
99	} while (0)
100
101	#define BGET_double(arg) do { \
102	char *str; \
103	BGET_strconst(str); \
104	arg = atof(str); \
105	} while (0)
106
107	#define BGET_objindex(arg) do { \
108	U32 ix; \
109	BGET_U32(ix); \
110	arg = obj_list[ix]; \
111	} while (0)
112
113	#define BSET_ldspecsv(sv, arg) sv = specialsv_list[arg]
114
115	#define BSET_sv_refcnt_add(svrefcnt, arg) svrefcnt += arg
116	#define BSET_gp_refcnt_add(gprefcnt, arg) gprefcnt += arg
117	#define BSET_gp_share(sv, arg) do { \
118	gp_free((GV*)sv); \
119	GvGP(sv) = GvGP(arg); \
120	} while (0)
121
122	#define BSET_gv_fetchpv(sv, arg) sv = (SV*)gv_fetchpv(arg, TRUE, SVt_PV)
123	#define BSET_gv_stashpv(sv, arg) sv = (SV*)gv_stashpv(arg, TRUE)
124	#define BSET_sv_magic(sv, arg) sv_magic(sv, Nullsv, arg, 0, 0)
125	#define BSET_mg_pv(mg, arg) mg->mg_ptr = arg; mg->mg_len = pv.xpv_cur
126	#define BSET_sv_upgrade(sv, arg) (void)SvUPGRADE(sv, arg)
127	#define BSET_xpv(sv) do { \
128	SvPV_set(sv, pv.xpv_pv); \
129	SvCUR_set(sv, pv.xpv_cur); \
130	SvLEN_set(sv, pv.xpv_len); \
131	} while (0)
132	#define BSET_av_extend(sv, arg) av_extend((AV*)sv, arg)
133
134	#define BSET_av_push(sv, arg) av_push((AV*)sv, arg)
135	#define BSET_hv_store(sv, arg) \
136	hv_store((HV*)sv, pv.xpv_pv, pv.xpv_cur, arg, 0)
137	#define BSET_pv_free(pv) Safefree(pv.xpv_pv)
138	#define BSET_pregcomp(o, arg) \
139	((PMOP*)o)->op_pmregexp = arg ? \
140	pregcomp(arg, arg + pv.xpv_cur, ((PMOP*)o)) : 0
141	#define BSET_newsv(sv, arg) sv = NEWSV(666,0); SvUPGRADE(sv, arg)
142	#define BSET_newop(o, arg) o = (OP*)safemalloc(optype_size[arg])
143	#define BSET_newopn(o, arg) do { \
144	OP *oldop = o; \
145	BSET_newop(o, arg); \
146	oldop->op_next = o; \
147	} while (0)
148
149	#define BSET_ret(foo) return
150
151	/*
152	* Kludge special-case workaround for OP_MAPSTART
153	* which needs the ppaddr for OP_GREPSTART. Blech.
154	*/
155	#define BSET_op_type(o, arg) do { \
156	o->op_type = arg; \
157	if (arg == OP_MAPSTART) \
158	arg = OP_GREPSTART; \
159	o->op_ppaddr = ppaddr[arg]; \
160	} while (0)
161	#define BSET_op_ppaddr(o, arg) croak("op_ppaddr not yet implemented")
162	#define BSET_curpad(pad, arg) pad = AvARRAY(arg)
163
164	#define BSET_OBJ_STORE(obj, ix) \
165	(I32)ix > obj_list_fill ? \
166	bset_obj_store(obj, (I32)ix) : (obj_list[ix] = obj)