[p5sagit/p5-mst-13.2.git] / ext / ByteLoader / bytecode.h

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

#define BGET_FREAD(argp, len, nelem)	\
	 PerlIO_read(PL_rsfp,(char*)(argp),(len)*(nelem))
#define BGET_FGETC() PerlIO_getc(PL_rsfp)

#define BGET_U32(arg)	\
	BGET_FREAD(&arg, sizeof(U32), 1)
#define BGET_I32(arg)	\
	BGET_FREAD(&arg, sizeof(I32), 1)
#define BGET_U16(arg)	\
	BGET_FREAD(&arg, sizeof(U16), 1)
#define BGET_U8(arg)	arg = BGET_FGETC()

#define BGET_PV(arg)	STMT_START {					\
	BGET_U32(arg);							\
	if (arg) {							\
	    New(666, bytecode_pv.xpv_pv, arg, char);			\
	    PerlIO_read(PL_rsfp, (void*)bytecode_pv.xpv_pv, arg);	\
	    bytecode_pv.xpv_len = arg;					\
	    bytecode_pv.xpv_cur = arg - 1;				\
	} else {							\
	    bytecode_pv.xpv_pv = 0;					\
	    bytecode_pv.xpv_len = 0;					\
	    bytecode_pv.xpv_cur = 0;					\
	}								\
    } STMT_END

#ifdef BYTELOADER_LOG_COMMENTS
#  define BGET_comment_t(arg) \
    STMT_START {							\
	char buf[1024];							\
	int i = 0;							\
	do {								\
	    arg = BGET_FGETC();						\
	    buf[i++] = (char)arg;					\
	} while (arg != '\n' && arg != EOF);				\
	buf[i] = '\0';							\
	PerlIO_printf(PerlIO_stderr(), "%s", buf);			\
    } STMT_END
#else
#  define BGET_comment_t(arg) \
	do { arg = BGET_FGETC(); } while (arg != '\n' && arg != EOF)
#endif

/*
 * 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) STMT_START {			\
	U32 hi, lo;					\
	BGET_U32(hi);					\
	BGET_U32(lo);					\
	if (sizeof(IV) == 8)				\
	    arg = ((IV)hi << (sizeof(IV)*4) | (IV)lo);	\
	else if (((I32)hi == -1 && (I32)lo < 0)		\
		 || ((I32)hi == 0 && (I32)lo >= 0)) {	\
	    arg = (I32)lo;				\
	}						\
	else {						\
	    bytecode_iv_overflows++;			\
	    arg = 0;					\
	}						\
    } STMT_END

#define BGET_op_tr_array(arg) do {			\
	unsigned short *ary;				\
	int i;						\
	New(666, ary, 256, unsigned short);		\
	BGET_FREAD(ary, sizeof(unsigned short), 256);	\
	arg = (char *) ary;				\
    } while (0)

#define BGET_pvcontents(arg)	arg = bytecode_pv.xpv_pv
#define BGET_strconst(arg) STMT_START {	\
	for (arg = PL_tokenbuf; (*arg = BGET_FGETC()); arg++) /* nothing */; \
	arg = PL_tokenbuf;			\
    } STMT_END

#define BGET_NV(arg) STMT_START {	\
	char *str;			\
	BGET_strconst(str);		\
	arg = Atof(str);		\
    } STMT_END

#define BGET_objindex(arg, type) STMT_START {	\
	U32 ix;					\
	BGET_U32(ix);				\
	arg = (type)bytecode_obj_list[ix];		\
    } STMT_END
#define BGET_svindex(arg) BGET_objindex(arg, svindex)
#define BGET_opindex(arg) BGET_objindex(arg, opindex)

#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) STMT_START {	\
	gp_free((GV*)sv);			\
	GvGP(sv) = GvGP(arg);			\
    } STMT_END

#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 = bytecode_pv.xpv_cur
#define BSET_sv_upgrade(sv, arg)	(void)SvUPGRADE(sv, arg)
#define BSET_xpv(sv)	do {	\
	SvPV_set(sv, bytecode_pv.xpv_pv);	\
	SvCUR_set(sv, bytecode_pv.xpv_cur);	\
	SvLEN_set(sv, bytecode_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, bytecode_pv.xpv_pv, bytecode_pv.xpv_cur, arg, 0)
#define BSET_pv_free(pv)	Safefree(pv.xpv_pv)
#define BSET_pregcomp(o, arg) \
	((PMOP*)o)->op_pmregexp = arg ? \
		CALLREGCOMP(aTHX_ arg, arg + bytecode_pv.xpv_cur, ((PMOP*)o)) : 0
#define BSET_newsv(sv, arg)				\
	STMT_START {					\
	    sv = (arg == SVt_PVAV ? (SV*)newAV() :	\
		  arg == SVt_PVHV ? (SV*)newHV() :	\
		  NEWSV(666,0));			\
	    SvUPGRADE(sv, arg);				\
	} STMT_END
#define BSET_newop(o, arg)	((o = (OP*)safemalloc(optype_size[arg])), \
				 memzero((char*)o,optype_size[arg]))
#define BSET_newopn(o, arg) STMT_START {	\
	OP *oldop = o;				\
	BSET_newop(o, arg);			\
	oldop->op_next = o;			\
    } STMT_END

#define BSET_ret(foo) STMT_START {			\
	if (bytecode_obj_list)				\
	    Safefree(bytecode_obj_list);		\
	LEAVE;						\
	return;						\
    } STMT_END

/*
 * Kludge special-case workaround for OP_MAPSTART
 * which needs the ppaddr for OP_GREPSTART. Blech.
 */
#define BSET_op_type(o, arg) STMT_START {	\
	o->op_type = arg;			\
	if (arg == OP_MAPSTART)			\
	    arg = OP_GREPSTART;			\
	o->op_ppaddr = PL_ppaddr[arg];		\
    } STMT_END
#define BSET_op_ppaddr(o, arg) Perl_croak(aTHX_ "op_ppaddr not yet implemented")
#define BSET_curpad(pad, arg) STMT_START {	\
	PL_comppad = (AV *)arg;			\
	pad = AvARRAY(arg);			\
    } STMT_END
/* this works now that Sarathy's changed the CopFILE_set macro to do the SvREFCNT_inc()
	-- BKS 6-2-2000 */
#define BSET_cop_file(cop, arg)		CopFILE_set(cop,arg)
#define BSET_cop_line(cop, arg)		CopLINE_set(cop,arg)
#define BSET_cop_stashpv(cop, arg)	CopSTASHPV_set(cop,arg)

/* this is simply stolen from the code in newATTRSUB() */
#define BSET_push_begin(ary,cv)				\
	STMT_START {					\
	    I32 oldscope = PL_scopestack_ix;		\
	    ENTER;					\
	    SAVECOPFILE(&PL_compiling);			\
	    SAVECOPLINE(&PL_compiling);			\
	    save_svref(&PL_rs);				\
	    sv_setsv(PL_rs, PL_nrs);			\
	    if (!PL_beginav)				\
		PL_beginav = newAV();			\
	    av_push(PL_beginav, cv);			\
	    call_list(oldscope, PL_beginav);		\
	    PL_curcop = &PL_compiling;			\
	    PL_compiling.op_private = PL_hints;		\
	    LEAVE;					\
	} STMT_END
#define BSET_push_init(ary,cv)								\
	STMT_START {									\
	    av_unshift((PL_initav ? PL_initav : (PL_initav = newAV(), PL_initav)), 1); 	\
	    av_store(PL_initav, 0, cv);							\
	} STMT_END
#define BSET_push_end(ary,cv)									\
	STMT_START {									\
	    av_unshift((PL_endav ? PL_endav : (PL_endav = newAV(), PL_endav)), 1);	\
	    av_store(PL_endav, 0, cv);							\
	} STMT_END
#define BSET_OBJ_STORE(obj, ix)			\
	(I32)ix > bytecode_obj_list_fill ?	\
	bset_obj_store(aTHXo_ obj, (I32)ix) : (bytecode_obj_list[ix] = obj)
#define BYTECODE_HEADER_CHECK				\
	STMT_START {					\
	    U32 sz;					\
	    strconst str;				\
	    char *badpart;				\
							\
	    BGET_U32(sz); /* Magic: 'PLBC' */		\
	    if (sz != 0x43424c50) {			\
		badpart = "bad magic";			\
		goto bch_fail;				\
	    }						\
	    BGET_strconst(str);	/* archname */		\
	    if (strNE(str, ARCHNAME)) {			\
		badpart = "wrong architecture";		\
		goto bch_fail;				\
	    }						\
	    BGET_U32(sz); /* ivsize */			\
	    if (sz != IVSIZE) {				\
		badpart = "different IVSIZE";		\
		goto bch_fail;				\
	    }						\
	    BGET_U32(sz); /* ptrsize */			\
	    if (sz != PTRSIZE) {			\
		badpart = "different PTRSIZE";		\
		goto bch_fail;				\
	    }						\
	    BGET_strconst(str); /* byteorder */		\
	    if (strNE(str, STRINGIFY(BYTEORDER))) {	\
		badpart = "different byteorder";	\
	bch_fail:					\
		Perl_croak(aTHX_ "Invalid bytecode for this architecture: %s\n",	\
				badpart);		\
	    }						\
	} STMT_END
Commit	Line	Data
e8edd1e6	1	typedef char *pvcontents;
	2	typedef char *strconst;
	3	typedef U32 PV;
	4	typedef char *op_tr_array;
	5	typedef int comment_t;
	6	typedef SV *svindex;
	7	typedef OP *opindex;
	8	typedef IV IV64;
	9
	10	#define BGET_FREAD(argp, len, nelem) \
d11915b8	11	PerlIO_read(PL_rsfp,(char)(argp),(len)(nelem))
d11915b8	12	#define BGET_FGETC() PerlIO_getc(PL_rsfp)
e8edd1e6	13
e8edd1e6	14	#define BGET_U32(arg) \
d11915b8	15	BGET_FREAD(&arg, sizeof(U32), 1)
e8edd1e6	16	#define BGET_I32(arg) \
d11915b8	17	BGET_FREAD(&arg, sizeof(I32), 1)
e8edd1e6	18	#define BGET_U16(arg) \
d11915b8	19	BGET_FREAD(&arg, sizeof(U16), 1)
e8edd1e6	20	#define BGET_U8(arg) arg = BGET_FGETC()
e8edd1e6	21
d11915b8	22	#define BGET_PV(arg) STMT_START { \
	23	BGET_U32(arg); \
	24	if (arg) { \
	25	New(666, bytecode_pv.xpv_pv, arg, char); \
	26	PerlIO_read(PL_rsfp, (void*)bytecode_pv.xpv_pv, arg); \
	27	bytecode_pv.xpv_len = arg; \
	28	bytecode_pv.xpv_cur = arg - 1; \
	29	} else { \
	30	bytecode_pv.xpv_pv = 0; \
	31	bytecode_pv.xpv_len = 0; \
	32	bytecode_pv.xpv_cur = 0; \
	33	} \
e8edd1e6	34	} STMT_END
e8edd1e6	35
fc290457	36	#ifdef BYTELOADER_LOG_COMMENTS
	37	# define BGET_comment_t(arg) \
	38	STMT_START { \
	39	char buf[1024]; \
	40	int i = 0; \
	41	do { \
	42	arg = BGET_FGETC(); \
	43	buf[i++] = (char)arg; \
	44	} while (arg != '\n' && arg != EOF); \
	45	buf[i] = '\0'; \
	46	PerlIO_printf(PerlIO_stderr(), "%s", buf); \
	47	} STMT_END
	48	#else
	49	# define BGET_comment_t(arg) \
e8edd1e6	50	do { arg = BGET_FGETC(); } while (arg != '\n' && arg != EOF)
fc290457	51	#endif
e8edd1e6	52
	53	/*
	54	* In the following, sizeof(IV)*4 is just a way of encoding 32 on 64-bit-IV
	55	* machines such that 32-bit machine compilers don't whine about the shift
	56	* count being too high even though the code is never reached there.
	57	*/
	58	#define BGET_IV64(arg) STMT_START { \
	59	U32 hi, lo; \
	60	BGET_U32(hi); \
	61	BGET_U32(lo); \
	62	if (sizeof(IV) == 8) \
42718184	63	arg = ((IV)hi << (sizeof(IV)*4) \| (IV)lo); \
e8edd1e6	64	else if (((I32)hi == -1 && (I32)lo < 0) \
	65	\|\| ((I32)hi == 0 && (I32)lo >= 0)) { \
	66	arg = (I32)lo; \
	67	} \
	68	else { \
d11915b8	69	bytecode_iv_overflows++; \
e8edd1e6	70	arg = 0; \
	71	} \
	72	} STMT_END
	73
d11915b8	74	#define BGET_op_tr_array(arg) do { \
	75	unsigned short *ary; \
	76	int i; \
	77	New(666, ary, 256, unsigned short); \
	78	BGET_FREAD(ary, sizeof(unsigned short), 256); \
	79	arg = (char *) ary; \
e8edd1e6	80	} while (0)
	81
	82	#define BGET_pvcontents(arg) arg = bytecode_pv.xpv_pv
	83	#define BGET_strconst(arg) STMT_START { \
	84	for (arg = PL_tokenbuf; (arg = BGET_FGETC()); arg++) / nothing */; \
	85	arg = PL_tokenbuf; \
	86	} STMT_END
	87
cad2e5aa	88	#define BGET_NV(arg) STMT_START { \
e8edd1e6	89	char *str; \
e8edd1e6	90	BGET_strconst(str); \
ac26f109	91	arg = Atof(str); \
e8edd1e6	92	} STMT_END
	93
	94	#define BGET_objindex(arg, type) STMT_START { \
	95	U32 ix; \
	96	BGET_U32(ix); \
	97	arg = (type)bytecode_obj_list[ix]; \
	98	} STMT_END
	99	#define BGET_svindex(arg) BGET_objindex(arg, svindex)
	100	#define BGET_opindex(arg) BGET_objindex(arg, opindex)
	101
	102	#define BSET_ldspecsv(sv, arg) sv = specialsv_list[arg]
	103
	104	#define BSET_sv_refcnt_add(svrefcnt, arg) svrefcnt += arg
	105	#define BSET_gp_refcnt_add(gprefcnt, arg) gprefcnt += arg
	106	#define BSET_gp_share(sv, arg) STMT_START { \
	107	gp_free((GV*)sv); \
	108	GvGP(sv) = GvGP(arg); \
	109	} STMT_END
	110
	111	#define BSET_gv_fetchpv(sv, arg) sv = (SV*)gv_fetchpv(arg, TRUE, SVt_PV)
	112	#define BSET_gv_stashpv(sv, arg) sv = (SV*)gv_stashpv(arg, TRUE)
	113	#define BSET_sv_magic(sv, arg) sv_magic(sv, Nullsv, arg, 0, 0)
	114	#define BSET_mg_pv(mg, arg) mg->mg_ptr = arg; mg->mg_len = bytecode_pv.xpv_cur
	115	#define BSET_sv_upgrade(sv, arg) (void)SvUPGRADE(sv, arg)
	116	#define BSET_xpv(sv) do { \
	117	SvPV_set(sv, bytecode_pv.xpv_pv); \
	118	SvCUR_set(sv, bytecode_pv.xpv_cur); \
	119	SvLEN_set(sv, bytecode_pv.xpv_len); \
	120	} while (0)
	121	#define BSET_av_extend(sv, arg) av_extend((AV*)sv, arg)
	122
	123	#define BSET_av_push(sv, arg) av_push((AV*)sv, arg)
	124	#define BSET_hv_store(sv, arg) \
	125	hv_store((HV*)sv, bytecode_pv.xpv_pv, bytecode_pv.xpv_cur, arg, 0)
	126	#define BSET_pv_free(pv) Safefree(pv.xpv_pv)
	127	#define BSET_pregcomp(o, arg) \
	128	((PMOP*)o)->op_pmregexp = arg ? \
cea2e8a9	129	CALLREGCOMP(aTHX_ arg, arg + bytecode_pv.xpv_cur, ((PMOP*)o)) : 0
d11915b8	130	#define BSET_newsv(sv, arg) \
	131	STMT_START { \
	132	sv = (arg == SVt_PVAV ? (SV*)newAV() : \
	133	arg == SVt_PVHV ? (SV*)newHV() : \
	134	NEWSV(666,0)); \
	135	SvUPGRADE(sv, arg); \
	136	} STMT_END
fc290457	137	#define BSET_newop(o, arg) ((o = (OP*)safemalloc(optype_size[arg])), \
fc290457	138	memzero((char*)o,optype_size[arg]))
e8edd1e6	139	#define BSET_newopn(o, arg) STMT_START { \
	140	OP *oldop = o; \
	141	BSET_newop(o, arg); \
	142	oldop->op_next = o; \
	143	} STMT_END
	144
d11915b8	145	#define BSET_ret(foo) STMT_START { \
	146	if (bytecode_obj_list) \
	147	Safefree(bytecode_obj_list); \
	148	LEAVE; \
	149	return; \
	150	} STMT_END
e8edd1e6	151
	152	/*
	153	* Kludge special-case workaround for OP_MAPSTART
	154	* which needs the ppaddr for OP_GREPSTART. Blech.
	155	*/
	156	#define BSET_op_type(o, arg) STMT_START { \
	157	o->op_type = arg; \
	158	if (arg == OP_MAPSTART) \
	159	arg = OP_GREPSTART; \
	160	o->op_ppaddr = PL_ppaddr[arg]; \
	161	} STMT_END
cea2e8a9	162	#define BSET_op_ppaddr(o, arg) Perl_croak(aTHX_ "op_ppaddr not yet implemented")
e8edd1e6	163	#define BSET_curpad(pad, arg) STMT_START { \
	164	PL_comppad = (AV *)arg; \
	165	pad = AvARRAY(arg); \
	166	} STMT_END
d11915b8	167	/* this works now that Sarathy's changed the CopFILE_set macro to do the SvREFCNT_inc()
d11915b8	168	-- BKS 6-2-2000 */
11faa288	169	#define BSET_cop_file(cop, arg) CopFILE_set(cop,arg)
	170	#define BSET_cop_line(cop, arg) CopLINE_set(cop,arg)
	171	#define BSET_cop_stashpv(cop, arg) CopSTASHPV_set(cop,arg)
e8edd1e6	172
d11915b8	173	/* this is simply stolen from the code in newATTRSUB() */
	174	#define BSET_push_begin(ary,cv) \
	175	STMT_START { \
	176	I32 oldscope = PL_scopestack_ix; \
	177	ENTER; \
	178	SAVECOPFILE(&PL_compiling); \
	179	SAVECOPLINE(&PL_compiling); \
	180	save_svref(&PL_rs); \
	181	sv_setsv(PL_rs, PL_nrs); \
	182	if (!PL_beginav) \
	183	PL_beginav = newAV(); \
	184	av_push(PL_beginav, cv); \
	185	call_list(oldscope, PL_beginav); \
	186	PL_curcop = &PL_compiling; \
	187	PL_compiling.op_private = PL_hints; \
	188	LEAVE; \
	189	} STMT_END
	190	#define BSET_push_init(ary,cv) \
	191	STMT_START { \
	192	av_unshift((PL_initav ? PL_initav : (PL_initav = newAV(), PL_initav)), 1); \
	193	av_store(PL_initav, 0, cv); \
	194	} STMT_END
	195	#define BSET_push_end(ary,cv) \
	196	STMT_START { \
	197	av_unshift((PL_endav ? PL_endav : (PL_endav = newAV(), PL_endav)), 1); \
	198	av_store(PL_endav, 0, cv); \
	199	} STMT_END
	200	#define BSET_OBJ_STORE(obj, ix) \
e8edd1e6	201	(I32)ix > bytecode_obj_list_fill ? \
0cb96387	202	bset_obj_store(aTHXo_ obj, (I32)ix) : (bytecode_obj_list[ix] = obj)
d11915b8	203	#define BYTECODE_HEADER_CHECK \
	204	STMT_START { \
	205	U32 sz; \
	206	strconst str; \
	207	char *badpart; \
	208	\
	209	BGET_U32(sz); /* Magic: 'PLBC' */ \
	210	if (sz != 0x43424c50) { \
	211	badpart = "bad magic"; \
	212	goto bch_fail; \
	213	} \
	214	BGET_strconst(str); /* archname */ \
	215	if (strNE(str, ARCHNAME)) { \
	216	badpart = "wrong architecture"; \
	217	goto bch_fail; \
	218	} \
	219	BGET_U32(sz); /* ivsize */ \
	220	if (sz != IVSIZE) { \
	221	badpart = "different IVSIZE"; \
	222	goto bch_fail; \
	223	} \
	224	BGET_U32(sz); /* ptrsize */ \
	225	if (sz != PTRSIZE) { \
	226	badpart = "different PTRSIZE"; \
	227	goto bch_fail; \
	228	} \
	229	BGET_strconst(str); /* byteorder */ \
	230	if (strNE(str, STRINGIFY(BYTEORDER))) { \
	231	badpart = "different byteorder"; \
	232	bch_fail: \
	233	Perl_croak(aTHX_ "Invalid bytecode for this architecture: %s\n", \
	234	badpart); \
	235	} \
	236	} STMT_END