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a0d0e21e 1/* pp.h
79072805 2 *
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3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
79072805 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
79072805 8 *
a0d0e21e 9 */
79072805 10
cea2e8a9 11#define PP(s) OP * Perl_##s(pTHX)
79072805 12
954c1994 13/*
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14=head1 Stack Manipulation Macros
15
954c1994 16=for apidoc AmU||SP
fbe13c60 17Stack pointer. This is usually handled by C<xsubpp>. See C<L</dSP>> and
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18C<SPAGAIN>.
19
20=for apidoc AmU||MARK
fbe13c60 21Stack marker variable for the XSUB. See C<L</dMARK>>.
954c1994 22
c578083c 23=for apidoc Am|void|PUSHMARK|SP
fbe13c60 24Opening bracket for arguments on a callback. See C<L</PUTBACK>> and
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25L<perlcall>.
26
27=for apidoc Ams||dSP
28Declares a local copy of perl's stack pointer for the XSUB, available via
fbe13c60 29the C<SP> macro. See C<L</SP>>.
954c1994 30
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31=for apidoc ms||djSP
32
154e47c8 33Declare Just C<SP>. This is actually identical to C<dSP>, and declares
fac3506f 34a local copy of perl's stack pointer, available via the C<SP> macro.
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35See C<L<perlapi/SP>>. (Available for backward source code compatibility with
36the old (Perl 5.005) thread model.)
fac3506f 37
954c1994 38=for apidoc Ams||dMARK
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39Declare a stack marker variable, C<mark>, for the XSUB. See C<L</MARK>> and
40C<L</dORIGMARK>>.
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41
42=for apidoc Ams||dORIGMARK
fbe13c60 43Saves the original stack mark for the XSUB. See C<L</ORIGMARK>>.
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44
45=for apidoc AmU||ORIGMARK
fbe13c60 46The original stack mark for the XSUB. See C<L</dORIGMARK>>.
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47
48=for apidoc Ams||SPAGAIN
49Refetch the stack pointer. Used after a callback. See L<perlcall>.
50
fac3506f 51=cut */
954c1994 52
ac634a9a 53#undef SP /* Solaris 2.7 i386 has this in /usr/include/sys/reg.h */
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54#define SP sp
55#define MARK mark
56#define TARG targ
57
33a4312b 58#define PUSHMARK(p) \
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59 STMT_START { \
60 I32 * mark_stack_entry; \
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61 if (UNLIKELY((mark_stack_entry = ++PL_markstack_ptr) \
62 == PL_markstack_max)) \
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63 mark_stack_entry = markstack_grow(); \
64 *mark_stack_entry = (I32)((p) - PL_stack_base); \
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65 DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log, \
66 "MARK push %p %"IVdf"\n", \
67 PL_markstack_ptr, (IV)*mark_stack_entry))); \
6cae08a8 68 } STMT_END
6d8b7216 69
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70#define TOPMARK S_TOPMARK(aTHX)
71#define POPMARK S_POPMARK(aTHX)
6d8b7216 72
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73#define INCMARK \
74 STMT_START { \
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75 DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log, \
76 "MARK inc %p %"IVdf"\n", \
77 (PL_markstack_ptr+1), (IV)*(PL_markstack_ptr+1)))); \
33a4312b 78 PL_markstack_ptr++; \
6cae08a8 79 } STMT_END
a0d0e21e 80
bc0d193f 81#define dSP SV **sp = PL_stack_sp
39644a26 82#define djSP dSP
5aaab254 83#define dMARK SV **mark = PL_stack_base + POPMARK
514696af 84#define dORIGMARK const I32 origmark = (I32)(mark - PL_stack_base)
3280af22 85#define ORIGMARK (PL_stack_base + origmark)
79072805 86
3280af22 87#define SPAGAIN sp = PL_stack_sp
16e7e110 88#define MSPAGAIN STMT_START { sp = PL_stack_sp; mark = ORIGMARK; } STMT_END
79072805 89
533c011a 90#define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ))
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91#define dTARGETSTACKED SV * GETTARGETSTACKED
92
533c011a 93#define GETTARGET targ = PAD_SV(PL_op->op_targ)
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94#define dTARGET SV * GETTARGET
95
533c011a 96#define GETATARGET targ = (PL_op->op_flags & OPf_STACKED ? sp[-1] : PAD_SV(PL_op->op_targ))
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97#define dATARGET SV * GETATARGET
98
99#define dTARG SV *targ
100
533c011a 101#define NORMAL PL_op->op_next
9fed9930 102#define DIE return Perl_die
79072805 103
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104/*
105=for apidoc Ams||PUTBACK
106Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>.
fbe13c60 107See C<L</PUSHMARK>> and L<perlcall> for other uses.
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108
109=for apidoc Amn|SV*|POPs
110Pops an SV off the stack.
111
112=for apidoc Amn|char*|POPp
4b7c0884 113Pops a string off the stack.
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114
115=for apidoc Amn|char*|POPpx
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116Pops a string off the stack. Identical to POPp. There are two names for
117historical reasons.
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118
119=for apidoc Amn|char*|POPpbytex
120Pops a string off the stack which must consist of bytes i.e. characters < 256.
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121
122=for apidoc Amn|NV|POPn
123Pops a double off the stack.
124
125=for apidoc Amn|IV|POPi
126Pops an integer off the stack.
127
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128=for apidoc Amn|UV|POPu
129Pops an unsigned integer off the stack.
130
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131=for apidoc Amn|long|POPl
132Pops a long off the stack.
133
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134=for apidoc Amn|long|POPul
135Pops an unsigned long off the stack.
136
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137=cut
138*/
139
3280af22 140#define PUTBACK PL_stack_sp = sp
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141#define RETURN return (PUTBACK, NORMAL)
142#define RETURNOP(o) return (PUTBACK, o)
143#define RETURNX(x) return (x, PUTBACK, NORMAL)
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144
145#define POPs (*sp--)
4b7c0884 146#define POPp POPpx
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147#define POPpx (SvPVx_nolen(POPs))
148#define POPpconstx (SvPVx_nolen_const(POPs))
149#define POPpbytex (SvPVbytex_nolen(POPs))
463ee0b2 150#define POPn (SvNVx(POPs))
a0d0e21e 151#define POPi ((IV)SvIVx(POPs))
ff68c719 152#define POPu ((UV)SvUVx(POPs))
463ee0b2 153#define POPl ((long)SvIVx(POPs))
d9b3e12d 154#define POPul ((unsigned long)SvIVx(POPs))
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155
156#define TOPs (*sp)
56370e9f 157#define TOPm1s (*(sp-1))
7dca457a 158#define TOPp1s (*(sp+1))
4b7c0884 159#define TOPp TOPpx
95fad918 160#define TOPpx (SvPV_nolen(TOPs))
463ee0b2 161#define TOPn (SvNV(TOPs))
a0d0e21e 162#define TOPi ((IV)SvIV(TOPs))
ff68c719 163#define TOPu ((UV)SvUV(TOPs))
463ee0b2 164#define TOPl ((long)SvIV(TOPs))
c5a0f51a 165#define TOPul ((unsigned long)SvUV(TOPs))
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166
167/* Go to some pains in the rare event that we must extend the stack. */
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168
169/*
fc16c392 170=for apidoc Am|void|EXTEND|SP|SSize_t nitems
72d33970 171Used to extend the argument stack for an XSUB's return values. Once
4375e838 172used, guarantees that there is room for at least C<nitems> to be pushed
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173onto the stack.
174
175=for apidoc Am|void|PUSHs|SV* sv
aacdac46 176Push an SV onto the stack. The stack must have room for this element.
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177Does not handle 'set' magic. Does not use C<TARG>. See also
178C<L</PUSHmortal>>, C<L</XPUSHs>>, and C<L</XPUSHmortal>>.
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179
180=for apidoc Am|void|PUSHp|char* str|STRLEN len
181Push a string onto the stack. The stack must have room for this element.
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182The C<len> indicates the length of the string. Handles 'set' magic. Uses
183C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to declare it. Do not
184call multiple C<TARG>-oriented macros to return lists from XSUB's - see
fbe13c60 185C<L</mPUSHp>> instead. See also C<L</XPUSHp>> and C<L</mXPUSHp>>.
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186
187=for apidoc Am|void|PUSHn|NV nv
188Push a double onto the stack. The stack must have room for this element.
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189Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
190called to declare it. Do not call multiple C<TARG>-oriented macros to
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191return lists from XSUB's - see C<L</mPUSHn>> instead. See also C<L</XPUSHn>>
192and C<L</mXPUSHn>>.
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193
194=for apidoc Am|void|PUSHi|IV iv
195Push an integer onto the stack. The stack must have room for this element.
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196Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
197called to declare it. Do not call multiple C<TARG>-oriented macros to
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198return lists from XSUB's - see C<L</mPUSHi>> instead. See also C<L</XPUSHi>>
199and C<L</mXPUSHi>>.
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200
201=for apidoc Am|void|PUSHu|UV uv
202Push an unsigned integer onto the stack. The stack must have room for this
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203element. Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG>
204should be called to declare it. Do not call multiple C<TARG>-oriented
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205macros to return lists from XSUB's - see C<L</mPUSHu>> instead. See also
206C<L</XPUSHu>> and C<L</mXPUSHu>>.
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207
208=for apidoc Am|void|XPUSHs|SV* sv
209Push an SV onto the stack, extending the stack if necessary. Does not
fbe13c60 210handle 'set' magic. Does not use C<TARG>. See also C<L</XPUSHmortal>>,
d82b684c 211C<PUSHs> and C<PUSHmortal>.
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212
213=for apidoc Am|void|XPUSHp|char* str|STRLEN len
214Push a string onto the stack, extending the stack if necessary. The C<len>
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215indicates the length of the string. Handles 'set' magic. Uses C<TARG>, so
216C<dTARGET> or C<dXSTARG> should be called to declare it. Do not call
217multiple C<TARG>-oriented macros to return lists from XSUB's - see
fbe13c60 218C<L</mXPUSHp>> instead. See also C<L</PUSHp>> and C<L</mPUSHp>>.
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219
220=for apidoc Am|void|XPUSHn|NV nv
221Push a double onto the stack, extending the stack if necessary. Handles
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222'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to
223declare it. Do not call multiple C<TARG>-oriented macros to return lists
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224from XSUB's - see C<L</mXPUSHn>> instead. See also C<L</PUSHn>> and
225C<L</mPUSHn>>.
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226
227=for apidoc Am|void|XPUSHi|IV iv
228Push an integer onto the stack, extending the stack if necessary. Handles
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229'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to
230declare it. Do not call multiple C<TARG>-oriented macros to return lists
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231from XSUB's - see C<L</mXPUSHi>> instead. See also C<L</PUSHi>> and
232C<L</mPUSHi>>.
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233
234=for apidoc Am|void|XPUSHu|UV uv
aacdac46 235Push an unsigned integer onto the stack, extending the stack if necessary.
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236Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
237called to declare it. Do not call multiple C<TARG>-oriented macros to
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238return lists from XSUB's - see C<L</mXPUSHu>> instead. See also C<L</PUSHu>> and
239C<L</mPUSHu>>.
d82b684c 240
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241=for apidoc Am|void|mPUSHs|SV* sv
242Push an SV onto the stack and mortalizes the SV. The stack must have room
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243for this element. Does not use C<TARG>. See also C<L</PUSHs>> and
244C<L</mXPUSHs>>.
6e449a3a 245
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246=for apidoc Am|void|PUSHmortal
247Push a new mortal SV onto the stack. The stack must have room for this
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248element. Does not use C<TARG>. See also C<L</PUSHs>>, C<L</XPUSHmortal>> and
249C<L</XPUSHs>>.
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250
251=for apidoc Am|void|mPUSHp|char* str|STRLEN len
252Push a string onto the stack. The stack must have room for this element.
121b7712 253The C<len> indicates the length of the string. Does not use C<TARG>.
fbe13c60 254See also C<L</PUSHp>>, C<L</mXPUSHp>> and C<L</XPUSHp>>.
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255
256=for apidoc Am|void|mPUSHn|NV nv
257Push a double onto the stack. The stack must have room for this element.
fbe13c60 258Does not use C<TARG>. See also C<L</PUSHn>>, C<L</mXPUSHn>> and C<L</XPUSHn>>.
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259
260=for apidoc Am|void|mPUSHi|IV iv
261Push an integer onto the stack. The stack must have room for this element.
fbe13c60 262Does not use C<TARG>. See also C<L</PUSHi>>, C<L</mXPUSHi>> and C<L</XPUSHi>>.
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263
264=for apidoc Am|void|mPUSHu|UV uv
265Push an unsigned integer onto the stack. The stack must have room for this
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266element. Does not use C<TARG>. See also C<L</PUSHu>>, C<L</mXPUSHu>> and
267C<L</XPUSHu>>.
d82b684c 268
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269=for apidoc Am|void|mXPUSHs|SV* sv
270Push an SV onto the stack, extending the stack if necessary and mortalizes
fbe13c60 271the SV. Does not use C<TARG>. See also C<L</XPUSHs>> and C<L</mPUSHs>>.
6e449a3a 272
d82b684c 273=for apidoc Am|void|XPUSHmortal
121b7712 274Push a new mortal SV onto the stack, extending the stack if necessary.
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275Does not use C<TARG>. See also C<L</XPUSHs>>, C<L</PUSHmortal>> and
276C<L</PUSHs>>.
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277
278=for apidoc Am|void|mXPUSHp|char* str|STRLEN len
279Push a string onto the stack, extending the stack if necessary. The C<len>
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280indicates the length of the string. Does not use C<TARG>. See also
281C<L</XPUSHp>>, C<mPUSHp> and C<PUSHp>.
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282
283=for apidoc Am|void|mXPUSHn|NV nv
121b7712 284Push a double onto the stack, extending the stack if necessary.
fbe13c60 285Does not use C<TARG>. See also C<L</XPUSHn>>, C<L</mPUSHn>> and C<L</PUSHn>>.
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286
287=for apidoc Am|void|mXPUSHi|IV iv
121b7712 288Push an integer onto the stack, extending the stack if necessary.
fbe13c60 289Does not use C<TARG>. See also C<L</XPUSHi>>, C<L</mPUSHi>> and C<L</PUSHi>>.
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290
291=for apidoc Am|void|mXPUSHu|UV uv
292Push an unsigned integer onto the stack, extending the stack if necessary.
fbe13c60 293Does not use C<TARG>. See also C<L</XPUSHu>>, C<L</mPUSHu>> and C<L</PUSHu>>.
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294
295=cut
296*/
297
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298/* _EXTEND_SAFE_N(n): private helper macro for EXTEND().
299 * Tests whether the value of n would be truncated when implicitly cast to
300 * SSize_t as an arg to stack_grow(). If so, sets it to -1 instead to
301 * trigger a panic. It will be constant folded on platforms where this
302 * can't happen.
303 */
304
305#define _EXTEND_SAFE_N(n) \
306 (sizeof(n) > sizeof(SSize_t) && ((SSize_t)(n) != (n)) ? -1 : (n))
307
865e3ae0 308#ifdef STRESS_REALLOC
aad79b33 309# define EXTEND(p,n) STMT_START { \
6768377c 310 sp = stack_grow(sp,p,_EXTEND_SAFE_N(n)); \
aad79b33 311 PERL_UNUSED_VAR(sp); \
8094bfa4 312 } STMT_END
865e3ae0 313/* Same thing, but update mark register too. */
aad79b33 314# define MEXTEND(p,n) STMT_START { \
ff36bb50 315 const SSize_t markoff = mark - PL_stack_base; \
6768377c 316 sp = stack_grow(sp,p,_EXTEND_SAFE_N(n)); \
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317 mark = PL_stack_base + markoff; \
318 PERL_UNUSED_VAR(sp); \
319 } STMT_END
865e3ae0 320#else
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321
322/* _EXTEND_NEEDS_GROW(p,n): private helper macro for EXTEND().
323 * Tests to see whether n is too big and we need to grow the stack. Be
324 * very careful if modifying this. There are many ways to get things wrong
325 * (wrapping, truncating etc) that could cause a false negative and cause
326 * the call to stack_grow() to be skipped. On the other hand, false
327 * positives are safe.
328 * Bear in mind that sizeof(p) may be less than, equal to, or greater
329 * than sizeof(n), and while n is documented to be signed, someone might
330 * pass an unsigned value or expression. In general don't use casts to
331 * avoid warnings; instead expect the caller to fix their code.
332 * It is legal for p to be greater than PL_stack_max.
333 * If the allocated stack is already very large but current usage is
334 * small, then PL_stack_max - p might wrap round to a negative value, but
335 * this just gives a safe false positive
336 */
337
338# define _EXTEND_NEEDS_GROW(p,n) ( (n) < 0 || PL_stack_max - p < (n))
339
340# define EXTEND(p,n) STMT_START { \
341 if (UNLIKELY(_EXTEND_NEEDS_GROW(p,n))) { \
342 sp = stack_grow(sp,p,_EXTEND_SAFE_N(n)); \
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343 PERL_UNUSED_VAR(sp); \
344 } } STMT_END
79072805 345/* Same thing, but update mark register too. */
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346# define MEXTEND(p,n) STMT_START { \
347 if (UNLIKELY(_EXTEND_NEEDS_GROW(p,n))) { \
348 const SSize_t markoff = mark - PL_stack_base;\
349 sp = stack_grow(sp,p,_EXTEND_SAFE_N(n)); \
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350 mark = PL_stack_base + markoff; \
351 PERL_UNUSED_VAR(sp); \
352 } } STMT_END
865e3ae0 353#endif
79072805 354
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355/* set TARG to the IV value i. If do_taint is false,
356 * assume that PL_tainted can never be true */
357#define TARGi(i, do_taint) \
358 STMT_START { \
359 IV TARGi_iv = i; \
360 if (LIKELY( \
2efdfb1e 361 ((SvFLAGS(TARG) & (SVTYPEMASK|SVf_THINKFIRST|SVf_IVisUV)) == SVt_IV) \
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DM
362 & (do_taint ? !TAINT_get : 1))) \
363 { \
364 /* Cheap SvIOK_only(). \
365 * Assert that flags which SvIOK_only() would test or \
366 * clear can't be set, because we're SVt_IV */ \
367 assert(!(SvFLAGS(TARG) & \
368 (SVf_OOK|SVf_UTF8|(SVf_OK & ~(SVf_IOK|SVp_IOK))))); \
369 SvFLAGS(TARG) |= (SVf_IOK|SVp_IOK); \
370 /* SvIV_set() where sv_any points to head */ \
371 TARG->sv_u.svu_iv = TARGi_iv; \
372 } \
373 else \
374 sv_setiv_mg(targ, TARGi_iv); \
375 } STMT_END
376
377/* set TARG to the UV value u. If do_taint is false,
378 * assume that PL_tainted can never be true */
379#define TARGu(u, do_taint) \
380 STMT_START { \
381 UV TARGu_uv = u; \
382 if (LIKELY( \
2efdfb1e 383 ((SvFLAGS(TARG) & (SVTYPEMASK|SVf_THINKFIRST|SVf_IVisUV)) == SVt_IV) \
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DM
384 & (do_taint ? !TAINT_get : 1) \
385 & (TARGu_uv <= (UV)IV_MAX))) \
386 { \
387 /* Cheap SvIOK_only(). \
388 * Assert that flags which SvIOK_only() would test or \
389 * clear can't be set, because we're SVt_IV */ \
390 assert(!(SvFLAGS(TARG) & \
391 (SVf_OOK|SVf_UTF8|(SVf_OK & ~(SVf_IOK|SVp_IOK))))); \
392 SvFLAGS(TARG) |= (SVf_IOK|SVp_IOK); \
393 /* SvIV_set() where sv_any points to head */ \
394 TARG->sv_u.svu_iv = TARGu_uv; \
395 } \
396 else \
397 sv_setuv_mg(targ, TARGu_uv); \
398 } STMT_END
399
400/* set TARG to the NV value n. If do_taint is false,
401 * assume that PL_tainted can never be true */
402#define TARGn(n, do_taint) \
403 STMT_START { \
404 NV TARGn_nv = n; \
405 if (LIKELY( \
406 ((SvFLAGS(TARG) & (SVTYPEMASK|SVf_THINKFIRST)) == SVt_NV) \
407 & (do_taint ? !TAINT_get : 1))) \
408 { \
409 /* Cheap SvNOK_only(). \
410 * Assert that flags which SvNOK_only() would test or \
411 * clear can't be set, because we're SVt_NV */ \
412 assert(!(SvFLAGS(TARG) & \
413 (SVf_OOK|SVf_UTF8|(SVf_OK & ~(SVf_NOK|SVp_NOK))))); \
414 SvFLAGS(TARG) |= (SVf_NOK|SVp_NOK); \
415 SvNV_set(TARG, TARGn_nv); \
416 } \
417 else \
418 sv_setnv_mg(targ, TARGn_nv); \
419 } STMT_END
420
79072805 421#define PUSHs(s) (*++sp = (s))
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422#define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END
423#define PUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END
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424#define PUSHn(n) STMT_START { TARGn(n,1); PUSHs(TARG); } STMT_END
425#define PUSHi(i) STMT_START { TARGi(i,1); PUSHs(TARG); } STMT_END
426#define PUSHu(u) STMT_START { TARGu(u,1); PUSHs(TARG); } STMT_END
79072805 427
0acfb02f 428#define XPUSHs(s) STMT_START { EXTEND(sp,1); *++sp = (s); } STMT_END
86547924
PP
429#define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END
430#define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END
edba15b0
DM
431#define XPUSHn(n) STMT_START { TARGn(n,1); XPUSHs(TARG); } STMT_END
432#define XPUSHi(i) STMT_START { TARGi(i,1); XPUSHs(TARG); } STMT_END
433#define XPUSHu(u) STMT_START { TARGu(u,1); XPUSHs(TARG); } STMT_END
b162f9ea 434#define XPUSHundef STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END
79072805 435
6e449a3a 436#define mPUSHs(s) PUSHs(sv_2mortal(s))
2cc7004b 437#define PUSHmortal PUSHs(sv_newmortal())
8f14ea01 438#define mPUSHp(p,l) PUSHs(newSVpvn_flags((p), (l), SVs_TEMP))
121b7712
MHM
439#define mPUSHn(n) sv_setnv(PUSHmortal, (NV)(n))
440#define mPUSHi(i) sv_setiv(PUSHmortal, (IV)(i))
441#define mPUSHu(u) sv_setuv(PUSHmortal, (UV)(u))
2cc7004b 442
6e449a3a 443#define mXPUSHs(s) XPUSHs(sv_2mortal(s))
2cc7004b 444#define XPUSHmortal XPUSHs(sv_newmortal())
8f14ea01 445#define mXPUSHp(p,l) STMT_START { EXTEND(sp,1); mPUSHp((p), (l)); } STMT_END
121b7712
MHM
446#define mXPUSHn(n) STMT_START { EXTEND(sp,1); sv_setnv(PUSHmortal, (NV)(n)); } STMT_END
447#define mXPUSHi(i) STMT_START { EXTEND(sp,1); sv_setiv(PUSHmortal, (IV)(i)); } STMT_END
448#define mXPUSHu(u) STMT_START { EXTEND(sp,1); sv_setuv(PUSHmortal, (UV)(u)); } STMT_END
d82b684c 449
79072805 450#define SETs(s) (*sp = s)
86547924
PP
451#define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END
452#define SETp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END
edba15b0
DM
453#define SETn(n) STMT_START { TARGn(n,1); SETs(TARG); } STMT_END
454#define SETi(i) STMT_START { TARGi(i,1); SETs(TARG); } STMT_END
455#define SETu(u) STMT_START { TARGu(u,1); SETs(TARG); } STMT_END
a0d0e21e 456
79072805
LW
457#define dTOPss SV *sv = TOPs
458#define dPOPss SV *sv = POPs
65202027
DS
459#define dTOPnv NV value = TOPn
460#define dPOPnv NV value = POPn
6f1401dc 461#define dPOPnv_nomg NV value = (sp--, SvNV_nomg(TOPp1s))
a0d0e21e
LW
462#define dTOPiv IV value = TOPi
463#define dPOPiv IV value = POPi
55497cff
PP
464#define dTOPuv UV value = TOPu
465#define dPOPuv UV value = POPu
79072805 466
7a4c00b4 467#define dPOPXssrl(X) SV *right = POPs; SV *left = CAT2(X,s)
65202027 468#define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n)
7a4c00b4
PP
469#define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i)
470
471#define USE_LEFT(sv) \
6b349a5c 472 (SvOK(sv) || !(PL_op->op_flags & OPf_STACKED))
6f1401dc 473#define dPOPXiirl_ul_nomg(X) \
096c060c 474 IV right = (sp--, SvIV_nomg(TOPp1s)); \
6f1401dc 475 SV *leftsv = CAT2(X,s); \
096c060c 476 IV left = USE_LEFT(leftsv) ? SvIV_nomg(leftsv) : 0
7a4c00b4
PP
477
478#define dPOPPOPssrl dPOPXssrl(POP)
479#define dPOPPOPnnrl dPOPXnnrl(POP)
7a4c00b4 480#define dPOPPOPiirl dPOPXiirl(POP)
7a4c00b4
PP
481
482#define dPOPTOPssrl dPOPXssrl(TOP)
483#define dPOPTOPnnrl dPOPXnnrl(TOP)
6f1401dc
DM
484#define dPOPTOPnnrl_nomg \
485 NV right = SvNV_nomg(TOPs); NV left = (sp--, SvNV_nomg(TOPs))
7a4c00b4 486#define dPOPTOPiirl dPOPXiirl(TOP)
6f1401dc
DM
487#define dPOPTOPiirl_ul_nomg dPOPXiirl_ul_nomg(TOP)
488#define dPOPTOPiirl_nomg \
096c060c 489 IV right = SvIV_nomg(TOPs); IV left = (sp--, SvIV_nomg(TOPs))
79072805 490
3280af22
NIS
491#define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes))
492#define RETPUSHNO RETURNX(PUSHs(&PL_sv_no))
493#define RETPUSHUNDEF RETURNX(PUSHs(&PL_sv_undef))
79072805 494
3280af22
NIS
495#define RETSETYES RETURNX(SETs(&PL_sv_yes))
496#define RETSETNO RETURNX(SETs(&PL_sv_no))
497#define RETSETUNDEF RETURNX(SETs(&PL_sv_undef))
5d01050a 498#define RETSETTARG STMT_START { SETTARG; RETURN; } STMT_END
79072805 499
533c011a 500#define ARGTARG PL_op->op_targ
b162f9ea 501
f3574cc6 502#define MAXARG (PL_op->op_private & OPpARG4_MASK)
79072805 503
e336de0d
GS
504#define SWITCHSTACK(f,t) \
505 STMT_START { \
677b06e3 506 AvFILLp(f) = sp - PL_stack_base; \
3280af22 507 PL_stack_base = AvARRAY(t); \
677b06e3 508 PL_stack_max = PL_stack_base + AvMAX(t); \
3280af22 509 sp = PL_stack_sp = PL_stack_base + AvFILLp(t); \
677b06e3 510 PL_curstack = t; \
e336de0d 511 } STMT_END
79072805 512
bbce6d69 513#define EXTEND_MORTAL(n) \
a953aca5
DD
514 STMT_START { \
515 SSize_t eMiX = PL_tmps_ix + (n); \
516 if (UNLIKELY(eMiX >= PL_tmps_max)) \
dc9a870f 517 (void)Perl_tmps_grow_p(aTHX_ eMiX); \
677b06e3 518 } STMT_END
bbce6d69 519
a0d0e21e
LW
520#define AMGf_noright 1
521#define AMGf_noleft 2
522#define AMGf_assign 4
523#define AMGf_unary 8
6f1401dc
DM
524#define AMGf_numeric 0x10 /* for Perl_try_amagic_bin */
525#define AMGf_set 0x20 /* for Perl_try_amagic_bin */
67288365 526#define AMGf_want_list 0x40
636ac8fc 527#define AMGf_numarg 0x80
6f1401dc
DM
528
529
530/* do SvGETMAGIC on the stack args before checking for overload */
531
532#define tryAMAGICun_MG(method, flags) STMT_START { \
5d9574c1 533 if ( UNLIKELY((SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG))) \
6f1401dc
DM
534 && Perl_try_amagic_un(aTHX_ method, flags)) \
535 return NORMAL; \
536 } STMT_END
537#define tryAMAGICbin_MG(method, flags) STMT_START { \
5d9574c1 538 if ( UNLIKELY(((SvFLAGS(TOPm1s)|SvFLAGS(TOPs)) & (SVf_ROK|SVs_GMG))) \
6f1401dc
DM
539 && Perl_try_amagic_bin(aTHX_ method, flags)) \
540 return NORMAL; \
541 } STMT_END
542
31d632c3
DM
543#define AMG_CALLunary(sv,meth) \
544 amagic_call(sv,&PL_sv_undef, meth, AMGf_noright | AMGf_unary)
545
546/* No longer used in core. Use AMG_CALLunary instead */
547#define AMG_CALLun(sv,meth) AMG_CALLunary(sv, CAT2(meth,_amg))
a0d0e21e 548
fc99edcf 549#define tryAMAGICunTARGETlist(meth, jump) \
9f39b4f1 550 STMT_START { \
b5c08826
DM
551 dSP; \
552 SV *tmpsv; \
fc99edcf 553 SV *arg= *sp; \
1c23e2bd 554 U8 gimme = GIMME_V; \
5d9574c1 555 if (UNLIKELY(SvAMAGIC(arg) && \
b5c08826 556 (tmpsv = amagic_call(arg, &PL_sv_undef, meth, \
05fbd38d 557 AMGf_want_list | AMGf_noright \
5d9574c1
DM
558 |AMGf_unary)))) \
559 { \
b5c08826 560 SPAGAIN; \
67288365 561 if (gimme == G_VOID) { \
898c5644 562 NOOP; \
67288365 563 } \
05fbd38d 564 else if (gimme == G_ARRAY) { \
c70927a6
FC
565 SSize_t i; \
566 SSize_t len; \
67288365 567 assert(SvTYPE(tmpsv) == SVt_PVAV); \
b9f2b683 568 len = av_tindex((AV *)tmpsv) + 1; \
67288365
JL
569 (void)POPs; /* get rid of the arg */ \
570 EXTEND(sp, len); \
571 for (i = 0; i < len; ++i) \
572 PUSHs(av_shift((AV *)tmpsv)); \
573 } \
574 else { /* AMGf_want_scalar */ \
575 dATARGET; /* just use the arg's location */ \
576 sv_setsv(TARG, tmpsv); \
577 if (opASSIGN) \
578 sp--; \
579 SETTARG; \
580 } \
b5c08826
DM
581 PUTBACK; \
582 if (jump) { \
86e5639b
GG
583 OP *jump_o = NORMAL->op_next; \
584 while (jump_o->op_type == OP_NULL) \
585 jump_o = jump_o->op_next; \
586 assert(jump_o->op_type == OP_ENTERSUB); \
101d6365 587 (void)POPMARK; \
86e5639b 588 return jump_o->op_next; \
9f39b4f1 589 } \
b5c08826
DM
590 return NORMAL; \
591 } \
9f39b4f1
NC
592 } STMT_END
593
8897dcaa
NC
594/* This is no longer used anywhere in the core. You might wish to consider
595 calling amagic_deref_call() directly, as it has a cleaner interface. */
596#define tryAMAGICunDEREF(meth) \
9f39b4f1 597 STMT_START { \
e89bfaa6 598 sv = amagic_deref_call(*sp, CAT2(meth,_amg)); \
25a9ffce 599 SPAGAIN; \
16e7e110 600 } STMT_END
e8c20960 601
180b7b9b 602
533c011a 603#define opASSIGN (PL_op->op_flags & OPf_STACKED)
a0d0e21e 604
78f9721b
SM
605/*
606=for apidoc mU||LVRET
607True if this op will be the return value of an lvalue subroutine
608
609=cut */
9d96b2e7 610#define LVRET ((PL_op->op_private & OPpMAYBE_LVSUB) && is_lvalue_sub())
1b6737cc 611
d30e492c
VP
612#define SvCANEXISTDELETE(sv) \
613 (!SvRMAGICAL(sv) \
2c5f48c2
FC
614 || !(mg = mg_find((const SV *) sv, PERL_MAGIC_tied)) \
615 || ( (stash = SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(sv), mg)))) \
d30e492c
VP
616 && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) \
617 && gv_fetchmethod_autoload(stash, "DELETE", TRUE) \
618 ) \
619 )
620
d682515d 621#ifdef PERL_CORE
557fbd17 622
d682515d
NC
623/* These are just for Perl_tied_method(), which is not part of the public API.
624 Use 0x04 rather than the next available bit, to help the compiler if the
625 architecture can generate more efficient instructions. */
626# define TIED_METHOD_MORTALIZE_NOT_NEEDED 0x04
627# define TIED_METHOD_ARGUMENTS_ON_STACK 0x08
94bc412f 628# define TIED_METHOD_SAY 0x10
557fbd17
FC
629
630/* Used in various places that need to dereference a glob or globref */
094a3eec 631# define MAYBE_DEREF_GV_flags(sv,phlags) \
557fbd17 632 ( \
094a3eec 633 (void)(phlags & SV_GMAGIC && (SvGETMAGIC(sv),0)), \
557fbd17 634 isGV_with_GP(sv) \
4e794a06 635 ? (GV *)(sv) \
f8afbfa6
FC
636 : SvROK(sv) && SvTYPE(SvRV(sv)) <= SVt_PVLV && \
637 (SvGETMAGIC(SvRV(sv)), isGV_with_GP(SvRV(sv))) \
557fbd17
FC
638 ? (GV *)SvRV(sv) \
639 : NULL \
640 )
094a3eec
FC
641# define MAYBE_DEREF_GV(sv) MAYBE_DEREF_GV_flags(sv,SV_GMAGIC)
642# define MAYBE_DEREF_GV_nomg(sv) MAYBE_DEREF_GV_flags(sv,0)
557fbd17 643
db4cf31d 644# define FIND_RUNCV_padid_eq 1
b4b0692a 645# define FIND_RUNCV_level_eq 2
70794f7b 646
d682515d
NC
647#endif
648
1b6737cc 649/*
14d04a33 650 * ex: set ts=8 sts=4 sw=4 et:
1b6737cc 651 */