/* pp.h
*
- * Copyright (c) 1991-2001, Larry Wall
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+ * 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
-#ifdef USE_THREADS
-#define ARGS thr
-#define dARGS struct perl_thread *thr;
-#else
-#define ARGS
-#define dARGS
-#endif /* USE_THREADS */
-
#define PP(s) OP * Perl_##s(pTHX)
/*
+=head1 Stack Manipulation Macros
+
=for apidoc AmU||SP
-Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and
+Stack pointer. This is usually handled by C<xsubpp>. See C<L</dSP>> and
C<SPAGAIN>.
=for apidoc AmU||MARK
-Stack marker variable for the XSUB. See C<dMARK>.
+Stack marker variable for the XSUB. See C<L</dMARK>>.
-=for apidoc Ams||PUSHMARK
-Opening bracket for arguments on a callback. See C<PUTBACK> and
+=for apidoc Am|void|PUSHMARK|SP
+Opening bracket for arguments on a callback. See C<L</PUTBACK>> and
L<perlcall>.
=for apidoc Ams||dSP
Declares a local copy of perl's stack pointer for the XSUB, available via
-the C<SP> macro. See C<SP>.
+the C<SP> macro. See C<L</SP>>.
=for apidoc ms||djSP
-Declare Just C<SP>. This is actually identical to C<dSP>, and declares
+Declare Just C<SP>. This is actually identical to C<dSP>, and declares
a local copy of perl's stack pointer, available via the C<SP> macro.
-See C<SP>. (Available for backward source code compatibility with the
-old (Perl 5.005) thread model.)
+See C<L<perlapi/SP>>. (Available for backward source code compatibility with
+the old (Perl 5.005) thread model.)
=for apidoc Ams||dMARK
-Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and
-C<dORIGMARK>.
+Declare a stack marker variable, C<mark>, for the XSUB. See C<L</MARK>> and
+C<L</dORIGMARK>>.
=for apidoc Ams||dORIGMARK
-Saves the original stack mark for the XSUB. See C<ORIGMARK>.
+Saves the original stack mark for the XSUB. See C<L</ORIGMARK>>.
=for apidoc AmU||ORIGMARK
-The original stack mark for the XSUB. See C<dORIGMARK>.
+The original stack mark for the XSUB. See C<L</dORIGMARK>>.
=for apidoc Ams||SPAGAIN
Refetch the stack pointer. Used after a callback. See L<perlcall>.
=cut */
+#undef SP /* Solaris 2.7 i386 has this in /usr/include/sys/reg.h */
#define SP sp
#define MARK mark
#define TARG targ
-#define PUSHMARK(p) if (++PL_markstack_ptr == PL_markstack_max) \
- markstack_grow(); \
- *PL_markstack_ptr = (p) - PL_stack_base
+#if defined(DEBUGGING) && defined(PERL_USE_GCC_BRACE_GROUPS)
+
+# define PUSHMARK(p) \
+ STMT_START { \
+ I32 * mark_stack_entry; \
+ if (UNLIKELY((mark_stack_entry = ++PL_markstack_ptr) \
+ == PL_markstack_max)) \
+ mark_stack_entry = markstack_grow(); \
+ *mark_stack_entry = (I32)((p) - PL_stack_base); \
+ DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log, \
+ "MARK push %p %"IVdf"\n", \
+ PL_markstack_ptr, (IV)*mark_stack_entry))); \
+ } STMT_END
+
+# define TOPMARK \
+ ({ \
+ DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log, \
+ "MARK top %p %"IVdf"\n", \
+ PL_markstack_ptr, (IV)*PL_markstack_ptr))); \
+ *PL_markstack_ptr; \
+ })
+
+# define POPMARK \
+ ({ \
+ DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log, \
+ "MARK pop %p %"IVdf"\n", \
+ (PL_markstack_ptr-1), (IV)*(PL_markstack_ptr-1)))); \
+ assert((PL_markstack_ptr > PL_markstack) || !"MARK underflow");\
+ *PL_markstack_ptr--; \
+ })
+
+# define INCMARK \
+ ({ \
+ DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log, \
+ "MARK inc %p %"IVdf"\n", \
+ (PL_markstack_ptr+1), (IV)*(PL_markstack_ptr+1)))); \
+ *PL_markstack_ptr++; \
+ })
-#define TOPMARK (*PL_markstack_ptr)
-#define POPMARK (*PL_markstack_ptr--)
+#else
+
+# define PUSHMARK(p) \
+ STMT_START { \
+ I32 * mark_stack_entry; \
+ if (UNLIKELY((mark_stack_entry = ++PL_markstack_ptr) == PL_markstack_max)) \
+ mark_stack_entry = markstack_grow(); \
+ *mark_stack_entry = (I32)((p) - PL_stack_base); \
+ } STMT_END
+# define TOPMARK (*PL_markstack_ptr)
+# define POPMARK (*PL_markstack_ptr--)
+# define INCMARK (*PL_markstack_ptr++)
+#endif
-#define djSP register SV **sp = PL_stack_sp
-#define dSP djSP
-#define dMARK register SV **mark = PL_stack_base + POPMARK
-#define dORIGMARK I32 origmark = mark - PL_stack_base
-#define SETORIGMARK origmark = mark - PL_stack_base
+#define dSP SV **sp = PL_stack_sp
+#define djSP dSP
+#define dMARK SV **mark = PL_stack_base + POPMARK
+#define dORIGMARK const I32 origmark = (I32)(mark - PL_stack_base)
#define ORIGMARK (PL_stack_base + origmark)
#define SPAGAIN sp = PL_stack_sp
-#define MSPAGAIN sp = PL_stack_sp; mark = ORIGMARK
+#define MSPAGAIN STMT_START { sp = PL_stack_sp; mark = ORIGMARK; } STMT_END
#define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ))
#define dTARGETSTACKED SV * GETTARGETSTACKED
/*
=for apidoc Ams||PUTBACK
Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>.
-See C<PUSHMARK> and L<perlcall> for other uses.
+See C<L</PUSHMARK>> and L<perlcall> for other uses.
=for apidoc Amn|SV*|POPs
Pops an SV off the stack.
=for apidoc Amn|char*|POPp
Pops a string off the stack.
+=for apidoc Amn|char*|POPpx
+Pops a string off the stack. Identical to POPp. There are two names for
+historical reasons.
+
+=for apidoc Amn|char*|POPpbytex
+Pops a string off the stack which must consist of bytes i.e. characters < 256.
+
=for apidoc Amn|NV|POPn
Pops a double off the stack.
=for apidoc Amn|IV|POPi
Pops an integer off the stack.
+=for apidoc Amn|UV|POPu
+Pops an unsigned integer off the stack.
+
=for apidoc Amn|long|POPl
Pops a long off the stack.
+=for apidoc Amn|long|POPul
+Pops an unsigned long off the stack.
+
=cut
*/
#define PUTBACK PL_stack_sp = sp
-#define RETURN return PUTBACK, NORMAL
-#define RETURNOP(o) return PUTBACK, o
-#define RETURNX(x) return x, PUTBACK, NORMAL
+#define RETURN return (PUTBACK, NORMAL)
+#define RETURNOP(o) return (PUTBACK, o)
+#define RETURNX(x) return (x, PUTBACK, NORMAL)
#define POPs (*sp--)
-#define POPp (SvPVx(POPs, PL_na)) /* deprecated */
-#define POPpx (SvPVx(POPs, n_a))
+#define POPp POPpx
+#define POPpx (SvPVx_nolen(POPs))
+#define POPpconstx (SvPVx_nolen_const(POPs))
+#define POPpbytex (SvPVbytex_nolen(POPs))
#define POPn (SvNVx(POPs))
#define POPi ((IV)SvIVx(POPs))
#define POPu ((UV)SvUVx(POPs))
#define POPl ((long)SvIVx(POPs))
#define POPul ((unsigned long)SvIVx(POPs))
-#ifdef HAS_QUAD
-#define POPq ((Quad_t)SvIVx(POPs))
-#define POPuq ((Uquad_t)SvUVx(POPs))
-#endif
#define TOPs (*sp)
#define TOPm1s (*(sp-1))
-#define TOPp (SvPV(TOPs, PL_na)) /* deprecated */
-#define TOPpx (SvPV(TOPs, n_a))
+#define TOPp1s (*(sp+1))
+#define TOPp TOPpx
+#define TOPpx (SvPV_nolen(TOPs))
#define TOPn (SvNV(TOPs))
#define TOPi ((IV)SvIV(TOPs))
#define TOPu ((UV)SvUV(TOPs))
#define TOPl ((long)SvIV(TOPs))
#define TOPul ((unsigned long)SvUV(TOPs))
-#ifdef HAS_QUAD
-#define TOPq ((Quad_t)SvIV(TOPs))
-#define TOPuq ((Uquad_t)SvUV(TOPs))
-#endif
/* Go to some pains in the rare event that we must extend the stack. */
/*
-=for apidoc Am|void|EXTEND|SP|int nitems
-Used to extend the argument stack for an XSUB's return values. Once
+=for apidoc Am|void|EXTEND|SP|SSize_t nitems
+Used to extend the argument stack for an XSUB's return values. Once
used, guarantees that there is room for at least C<nitems> to be pushed
onto the stack.
=for apidoc Am|void|PUSHs|SV* sv
Push an SV onto the stack. The stack must have room for this element.
-Does not handle 'set' magic. See C<XPUSHs>.
+Does not handle 'set' magic. Does not use C<TARG>. See also
+C<L</PUSHmortal>>, C<L</XPUSHs>>, and C<L</XPUSHmortal>>.
=for apidoc Am|void|PUSHp|char* str|STRLEN len
Push a string onto the stack. The stack must have room for this element.
-The C<len> indicates the length of the string. Handles 'set' magic. See
-C<XPUSHp>.
+The C<len> indicates the length of the string. Handles 'set' magic. Uses
+C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to declare it. Do not
+call multiple C<TARG>-oriented macros to return lists from XSUB's - see
+C<L</mPUSHp>> instead. See also C<L</XPUSHp>> and C<L</mXPUSHp>>.
=for apidoc Am|void|PUSHn|NV nv
Push a double onto the stack. The stack must have room for this element.
-Handles 'set' magic. See C<XPUSHn>.
+Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
+called to declare it. Do not call multiple C<TARG>-oriented macros to
+return lists from XSUB's - see C<L</mPUSHn>> instead. See also C<L</XPUSHn>>
+and C<L</mXPUSHn>>.
=for apidoc Am|void|PUSHi|IV iv
Push an integer onto the stack. The stack must have room for this element.
-Handles 'set' magic. See C<XPUSHi>.
+Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
+called to declare it. Do not call multiple C<TARG>-oriented macros to
+return lists from XSUB's - see C<L</mPUSHi>> instead. See also C<L</XPUSHi>>
+and C<L</mXPUSHi>>.
=for apidoc Am|void|PUSHu|UV uv
Push an unsigned integer onto the stack. The stack must have room for this
-element. See C<XPUSHu>.
+element. Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG>
+should be called to declare it. Do not call multiple C<TARG>-oriented
+macros to return lists from XSUB's - see C<L</mPUSHu>> instead. See also
+C<L</XPUSHu>> and C<L</mXPUSHu>>.
=for apidoc Am|void|XPUSHs|SV* sv
Push an SV onto the stack, extending the stack if necessary. Does not
-handle 'set' magic. See C<PUSHs>.
+handle 'set' magic. Does not use C<TARG>. See also C<L</XPUSHmortal>>,
+C<PUSHs> and C<PUSHmortal>.
=for apidoc Am|void|XPUSHp|char* str|STRLEN len
Push a string onto the stack, extending the stack if necessary. The C<len>
-indicates the length of the string. Handles 'set' magic. See
-C<PUSHp>.
+indicates the length of the string. Handles 'set' magic. Uses C<TARG>, so
+C<dTARGET> or C<dXSTARG> should be called to declare it. Do not call
+multiple C<TARG>-oriented macros to return lists from XSUB's - see
+C<L</mXPUSHp>> instead. See also C<L</PUSHp>> and C<L</mPUSHp>>.
=for apidoc Am|void|XPUSHn|NV nv
Push a double onto the stack, extending the stack if necessary. Handles
-'set' magic. See C<PUSHn>.
+'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to
+declare it. Do not call multiple C<TARG>-oriented macros to return lists
+from XSUB's - see C<L</mXPUSHn>> instead. See also C<L</PUSHn>> and
+C<L</mPUSHn>>.
=for apidoc Am|void|XPUSHi|IV iv
Push an integer onto the stack, extending the stack if necessary. Handles
-'set' magic. See C<PUSHi>.
+'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to
+declare it. Do not call multiple C<TARG>-oriented macros to return lists
+from XSUB's - see C<L</mXPUSHi>> instead. See also C<L</PUSHi>> and
+C<L</mPUSHi>>.
=for apidoc Am|void|XPUSHu|UV uv
Push an unsigned integer onto the stack, extending the stack if necessary.
-See C<PUSHu>.
+Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
+called to declare it. Do not call multiple C<TARG>-oriented macros to
+return lists from XSUB's - see C<L</mXPUSHu>> instead. See also C<L</PUSHu>> and
+C<L</mPUSHu>>.
+
+=for apidoc Am|void|mPUSHs|SV* sv
+Push an SV onto the stack and mortalizes the SV. The stack must have room
+for this element. Does not use C<TARG>. See also C<L</PUSHs>> and
+C<L</mXPUSHs>>.
+
+=for apidoc Am|void|PUSHmortal
+Push a new mortal SV onto the stack. The stack must have room for this
+element. Does not use C<TARG>. See also C<L</PUSHs>>, C<L</XPUSHmortal>> and
+C<L</XPUSHs>>.
+
+=for apidoc Am|void|mPUSHp|char* str|STRLEN len
+Push a string onto the stack. The stack must have room for this element.
+The C<len> indicates the length of the string. Does not use C<TARG>.
+See also C<L</PUSHp>>, C<L</mXPUSHp>> and C<L</XPUSHp>>.
+
+=for apidoc Am|void|mPUSHn|NV nv
+Push a double onto the stack. The stack must have room for this element.
+Does not use C<TARG>. See also C<L</PUSHn>>, C<L</mXPUSHn>> and C<L</XPUSHn>>.
+
+=for apidoc Am|void|mPUSHi|IV iv
+Push an integer onto the stack. The stack must have room for this element.
+Does not use C<TARG>. See also C<L</PUSHi>>, C<L</mXPUSHi>> and C<L</XPUSHi>>.
+
+=for apidoc Am|void|mPUSHu|UV uv
+Push an unsigned integer onto the stack. The stack must have room for this
+element. Does not use C<TARG>. See also C<L</PUSHu>>, C<L</mXPUSHu>> and
+C<L</XPUSHu>>.
+
+=for apidoc Am|void|mXPUSHs|SV* sv
+Push an SV onto the stack, extending the stack if necessary and mortalizes
+the SV. Does not use C<TARG>. See also C<L</XPUSHs>> and C<L</mPUSHs>>.
+
+=for apidoc Am|void|XPUSHmortal
+Push a new mortal SV onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<L</XPUSHs>>, C<L</PUSHmortal>> and
+C<L</PUSHs>>.
+
+=for apidoc Am|void|mXPUSHp|char* str|STRLEN len
+Push a string onto the stack, extending the stack if necessary. The C<len>
+indicates the length of the string. Does not use C<TARG>. See also
+C<L</XPUSHp>>, C<mPUSHp> and C<PUSHp>.
+
+=for apidoc Am|void|mXPUSHn|NV nv
+Push a double onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<L</XPUSHn>>, C<L</mPUSHn>> and C<L</PUSHn>>.
+
+=for apidoc Am|void|mXPUSHi|IV iv
+Push an integer onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<L</XPUSHi>>, C<L</mPUSHi>> and C<L</PUSHi>>.
+
+=for apidoc Am|void|mXPUSHu|UV uv
+Push an unsigned integer onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<L</XPUSHu>>, C<L</mPUSHu>> and C<L</PUSHu>>.
=cut
*/
-#define EXTEND(p,n) STMT_START { if (PL_stack_max - p < (n)) { \
- sp = stack_grow(sp,p, (int) (n)); \
- } } STMT_END
+/* _EXTEND_SAFE_N(n): private helper macro for EXTEND().
+ * Tests whether the value of n would be truncated when implicitly cast to
+ * SSize_t as an arg to stack_grow(). If so, sets it to -1 instead to
+ * trigger a panic. It will be constant folded on platforms where this
+ * can't happen.
+ */
+
+#define _EXTEND_SAFE_N(n) \
+ (sizeof(n) > sizeof(SSize_t) && ((SSize_t)(n) != (n)) ? -1 : (n))
+
+#ifdef STRESS_REALLOC
+# define EXTEND(p,n) STMT_START { \
+ sp = stack_grow(sp,p,_EXTEND_SAFE_N(n)); \
+ PERL_UNUSED_VAR(sp); \
+ } STMT_END
+/* Same thing, but update mark register too. */
+# define MEXTEND(p,n) STMT_START { \
+ const SSize_t markoff = mark - PL_stack_base; \
+ sp = stack_grow(sp,p,_EXTEND_SAFE_N(n)); \
+ mark = PL_stack_base + markoff; \
+ PERL_UNUSED_VAR(sp); \
+ } STMT_END
+#else
+
+/* _EXTEND_NEEDS_GROW(p,n): private helper macro for EXTEND().
+ * Tests to see whether n is too big and we need to grow the stack. Be
+ * very careful if modifying this. There are many ways to get things wrong
+ * (wrapping, truncating etc) that could cause a false negative and cause
+ * the call to stack_grow() to be skipped. On the other hand, false
+ * positives are safe.
+ * Bear in mind that sizeof(p) may be less than, equal to, or greater
+ * than sizeof(n), and while n is documented to be signed, someone might
+ * pass an unsigned value or expression. In general don't use casts to
+ * avoid warnings; instead expect the caller to fix their code.
+ * It is legal for p to be greater than PL_stack_max.
+ * If the allocated stack is already very large but current usage is
+ * small, then PL_stack_max - p might wrap round to a negative value, but
+ * this just gives a safe false positive
+ */
+
+# define _EXTEND_NEEDS_GROW(p,n) ( (n) < 0 || PL_stack_max - p < (n))
+# define EXTEND(p,n) STMT_START { \
+ if (UNLIKELY(_EXTEND_NEEDS_GROW(p,n))) { \
+ sp = stack_grow(sp,p,_EXTEND_SAFE_N(n)); \
+ PERL_UNUSED_VAR(sp); \
+ } } STMT_END
/* Same thing, but update mark register too. */
-#define MEXTEND(p,n) STMT_START {if (PL_stack_max - p < (n)) { \
- int markoff = mark - PL_stack_base; \
- sp = stack_grow(sp,p,(int) (n)); \
- mark = PL_stack_base + markoff; \
- } } STMT_END
+# define MEXTEND(p,n) STMT_START { \
+ if (UNLIKELY(_EXTEND_NEEDS_GROW(p,n))) { \
+ const SSize_t markoff = mark - PL_stack_base;\
+ sp = stack_grow(sp,p,_EXTEND_SAFE_N(n)); \
+ mark = PL_stack_base + markoff; \
+ PERL_UNUSED_VAR(sp); \
+ } } STMT_END
+#endif
+
+/* set TARG to the IV value i. If do_taint is false,
+ * assume that PL_tainted can never be true */
+#define TARGi(i, do_taint) \
+ STMT_START { \
+ IV TARGi_iv = i; \
+ if (LIKELY( \
+ ((SvFLAGS(TARG) & (SVTYPEMASK|SVf_THINKFIRST|SVf_IVisUV)) == SVt_IV) \
+ & (do_taint ? !TAINT_get : 1))) \
+ { \
+ /* Cheap SvIOK_only(). \
+ * Assert that flags which SvIOK_only() would test or \
+ * clear can't be set, because we're SVt_IV */ \
+ assert(!(SvFLAGS(TARG) & \
+ (SVf_OOK|SVf_UTF8|(SVf_OK & ~(SVf_IOK|SVp_IOK))))); \
+ SvFLAGS(TARG) |= (SVf_IOK|SVp_IOK); \
+ /* SvIV_set() where sv_any points to head */ \
+ TARG->sv_u.svu_iv = TARGi_iv; \
+ } \
+ else \
+ sv_setiv_mg(targ, TARGi_iv); \
+ } STMT_END
+
+/* set TARG to the UV value u. If do_taint is false,
+ * assume that PL_tainted can never be true */
+#define TARGu(u, do_taint) \
+ STMT_START { \
+ UV TARGu_uv = u; \
+ if (LIKELY( \
+ ((SvFLAGS(TARG) & (SVTYPEMASK|SVf_THINKFIRST|SVf_IVisUV)) == SVt_IV) \
+ & (do_taint ? !TAINT_get : 1) \
+ & (TARGu_uv <= (UV)IV_MAX))) \
+ { \
+ /* Cheap SvIOK_only(). \
+ * Assert that flags which SvIOK_only() would test or \
+ * clear can't be set, because we're SVt_IV */ \
+ assert(!(SvFLAGS(TARG) & \
+ (SVf_OOK|SVf_UTF8|(SVf_OK & ~(SVf_IOK|SVp_IOK))))); \
+ SvFLAGS(TARG) |= (SVf_IOK|SVp_IOK); \
+ /* SvIV_set() where sv_any points to head */ \
+ TARG->sv_u.svu_iv = TARGu_uv; \
+ } \
+ else \
+ sv_setuv_mg(targ, TARGu_uv); \
+ } STMT_END
+
+/* set TARG to the NV value n. If do_taint is false,
+ * assume that PL_tainted can never be true */
+#define TARGn(n, do_taint) \
+ STMT_START { \
+ NV TARGn_nv = n; \
+ if (LIKELY( \
+ ((SvFLAGS(TARG) & (SVTYPEMASK|SVf_THINKFIRST)) == SVt_NV) \
+ & (do_taint ? !TAINT_get : 1))) \
+ { \
+ /* Cheap SvNOK_only(). \
+ * Assert that flags which SvNOK_only() would test or \
+ * clear can't be set, because we're SVt_NV */ \
+ assert(!(SvFLAGS(TARG) & \
+ (SVf_OOK|SVf_UTF8|(SVf_OK & ~(SVf_NOK|SVp_NOK))))); \
+ SvFLAGS(TARG) |= (SVf_NOK|SVp_NOK); \
+ SvNV_set(TARG, TARGn_nv); \
+ } \
+ else \
+ sv_setnv_mg(targ, TARGn_nv); \
+ } STMT_END
#define PUSHs(s) (*++sp = (s))
#define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END
#define PUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END
-#define PUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); PUSHTARG; } STMT_END
-#define PUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END
-#define PUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END
+#define PUSHn(n) STMT_START { TARGn(n,1); PUSHs(TARG); } STMT_END
+#define PUSHi(i) STMT_START { TARGi(i,1); PUSHs(TARG); } STMT_END
+#define PUSHu(u) STMT_START { TARGu(u,1); PUSHs(TARG); } STMT_END
-#define XPUSHs(s) STMT_START { EXTEND(sp,1); (*++sp = (s)); } STMT_END
+#define XPUSHs(s) STMT_START { EXTEND(sp,1); *++sp = (s); } STMT_END
#define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END
#define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END
-#define XPUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END
-#define XPUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); XPUSHTARG; } STMT_END
-#define XPUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END
+#define XPUSHn(n) STMT_START { TARGn(n,1); XPUSHs(TARG); } STMT_END
+#define XPUSHi(i) STMT_START { TARGi(i,1); XPUSHs(TARG); } STMT_END
+#define XPUSHu(u) STMT_START { TARGu(u,1); XPUSHs(TARG); } STMT_END
#define XPUSHundef STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END
+#define mPUSHs(s) PUSHs(sv_2mortal(s))
+#define PUSHmortal PUSHs(sv_newmortal())
+#define mPUSHp(p,l) PUSHs(newSVpvn_flags((p), (l), SVs_TEMP))
+#define mPUSHn(n) sv_setnv(PUSHmortal, (NV)(n))
+#define mPUSHi(i) sv_setiv(PUSHmortal, (IV)(i))
+#define mPUSHu(u) sv_setuv(PUSHmortal, (UV)(u))
+
+#define mXPUSHs(s) XPUSHs(sv_2mortal(s))
+#define XPUSHmortal XPUSHs(sv_newmortal())
+#define mXPUSHp(p,l) STMT_START { EXTEND(sp,1); mPUSHp((p), (l)); } STMT_END
+#define mXPUSHn(n) STMT_START { EXTEND(sp,1); sv_setnv(PUSHmortal, (NV)(n)); } STMT_END
+#define mXPUSHi(i) STMT_START { EXTEND(sp,1); sv_setiv(PUSHmortal, (IV)(i)); } STMT_END
+#define mXPUSHu(u) STMT_START { EXTEND(sp,1); sv_setuv(PUSHmortal, (UV)(u)); } STMT_END
+
#define SETs(s) (*sp = s)
#define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END
#define SETp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END
-#define SETn(n) STMT_START { sv_setnv(TARG, (NV)(n)); SETTARG; } STMT_END
-#define SETi(i) STMT_START { sv_setiv(TARG, (IV)(i)); SETTARG; } STMT_END
-#define SETu(u) STMT_START { sv_setuv(TARG, (UV)(u)); SETTARG; } STMT_END
+#define SETn(n) STMT_START { TARGn(n,1); SETs(TARG); } STMT_END
+#define SETi(i) STMT_START { TARGi(i,1); SETs(TARG); } STMT_END
+#define SETu(u) STMT_START { TARGu(u,1); SETs(TARG); } STMT_END
#define dTOPss SV *sv = TOPs
#define dPOPss SV *sv = POPs
#define dTOPnv NV value = TOPn
#define dPOPnv NV value = POPn
+#define dPOPnv_nomg NV value = (sp--, SvNV_nomg(TOPp1s))
#define dTOPiv IV value = TOPi
#define dPOPiv IV value = POPi
#define dTOPuv UV value = TOPu
#define dPOPuv UV value = POPu
-#ifdef HAS_QUAD
-#define dTOPqv Quad_t value = TOPu
-#define dPOPqv Quad_t value = POPu
-#define dTOPuqv Uquad_t value = TOPuq
-#define dPOPuqv Uquad_t value = POPuq
-#endif
#define dPOPXssrl(X) SV *right = POPs; SV *left = CAT2(X,s)
#define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n)
#define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i)
#define USE_LEFT(sv) \
- (SvOK(sv) || SvGMAGICAL(sv) || !(PL_op->op_flags & OPf_STACKED))
-#define dPOPXnnrl_ul(X) \
- NV right = POPn; \
+ (SvOK(sv) || !(PL_op->op_flags & OPf_STACKED))
+#define dPOPXiirl_ul_nomg(X) \
+ IV right = (sp--, SvIV_nomg(TOPp1s)); \
SV *leftsv = CAT2(X,s); \
- NV left = USE_LEFT(leftsv) ? SvNV(leftsv) : 0.0
-#define dPOPXiirl_ul(X) \
- IV right = POPi; \
- SV *leftsv = CAT2(X,s); \
- IV left = USE_LEFT(leftsv) ? SvIV(leftsv) : 0
+ IV left = USE_LEFT(leftsv) ? SvIV_nomg(leftsv) : 0
#define dPOPPOPssrl dPOPXssrl(POP)
#define dPOPPOPnnrl dPOPXnnrl(POP)
-#define dPOPPOPnnrl_ul dPOPXnnrl_ul(POP)
#define dPOPPOPiirl dPOPXiirl(POP)
-#define dPOPPOPiirl_ul dPOPXiirl_ul(POP)
#define dPOPTOPssrl dPOPXssrl(TOP)
#define dPOPTOPnnrl dPOPXnnrl(TOP)
-#define dPOPTOPnnrl_ul dPOPXnnrl_ul(TOP)
+#define dPOPTOPnnrl_nomg \
+ NV right = SvNV_nomg(TOPs); NV left = (sp--, SvNV_nomg(TOPs))
#define dPOPTOPiirl dPOPXiirl(TOP)
-#define dPOPTOPiirl_ul dPOPXiirl_ul(TOP)
+#define dPOPTOPiirl_ul_nomg dPOPXiirl_ul_nomg(TOP)
+#define dPOPTOPiirl_nomg \
+ IV right = SvIV_nomg(TOPs); IV left = (sp--, SvIV_nomg(TOPs))
#define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes))
#define RETPUSHNO RETURNX(PUSHs(&PL_sv_no))
#define RETSETYES RETURNX(SETs(&PL_sv_yes))
#define RETSETNO RETURNX(SETs(&PL_sv_no))
#define RETSETUNDEF RETURNX(SETs(&PL_sv_undef))
+#define RETSETTARG STMT_START { SETTARG; RETURN; } STMT_END
#define ARGTARG PL_op->op_targ
- /* See OPpTARGET_MY: */
-#define MAXARG (PL_op->op_private & 15)
+#define MAXARG (PL_op->op_private & OPpARG4_MASK)
#define SWITCHSTACK(f,t) \
STMT_START { \
} STMT_END
#define EXTEND_MORTAL(n) \
- STMT_START { \
- if (PL_tmps_ix + (n) >= PL_tmps_max) \
- tmps_grow(n); \
+ STMT_START { \
+ SSize_t eMiX = PL_tmps_ix + (n); \
+ if (UNLIKELY(eMiX >= PL_tmps_max)) \
+ (void)Perl_tmps_grow_p(aTHX_ eMiX); \
} STMT_END
#define AMGf_noright 1
#define AMGf_noleft 2
#define AMGf_assign 4
#define AMGf_unary 8
+#define AMGf_numeric 0x10 /* for Perl_try_amagic_bin */
+#define AMGf_set 0x20 /* for Perl_try_amagic_bin */
+#define AMGf_want_list 0x40
+#define AMGf_numarg 0x80
+
+
+/* do SvGETMAGIC on the stack args before checking for overload */
+
+#define tryAMAGICun_MG(method, flags) STMT_START { \
+ if ( UNLIKELY((SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG))) \
+ && Perl_try_amagic_un(aTHX_ method, flags)) \
+ return NORMAL; \
+ } STMT_END
+#define tryAMAGICbin_MG(method, flags) STMT_START { \
+ if ( UNLIKELY(((SvFLAGS(TOPm1s)|SvFLAGS(TOPs)) & (SVf_ROK|SVs_GMG))) \
+ && Perl_try_amagic_bin(aTHX_ method, flags)) \
+ return NORMAL; \
+ } STMT_END
+
+#define AMG_CALLunary(sv,meth) \
+ amagic_call(sv,&PL_sv_undef, meth, AMGf_noright | AMGf_unary)
+
+/* No longer used in core. Use AMG_CALLunary instead */
+#define AMG_CALLun(sv,meth) AMG_CALLunary(sv, CAT2(meth,_amg))
+
+#define tryAMAGICunTARGETlist(meth, jump) \
+ STMT_START { \
+ dSP; \
+ SV *tmpsv; \
+ SV *arg= *sp; \
+ int gimme = GIMME_V; \
+ if (UNLIKELY(SvAMAGIC(arg) && \
+ (tmpsv = amagic_call(arg, &PL_sv_undef, meth, \
+ AMGf_want_list | AMGf_noright \
+ |AMGf_unary)))) \
+ { \
+ SPAGAIN; \
+ if (gimme == G_VOID) { \
+ NOOP; \
+ } \
+ else if (gimme == G_ARRAY) { \
+ SSize_t i; \
+ SSize_t len; \
+ assert(SvTYPE(tmpsv) == SVt_PVAV); \
+ len = av_tindex((AV *)tmpsv) + 1; \
+ (void)POPs; /* get rid of the arg */ \
+ EXTEND(sp, len); \
+ for (i = 0; i < len; ++i) \
+ PUSHs(av_shift((AV *)tmpsv)); \
+ } \
+ else { /* AMGf_want_scalar */ \
+ dATARGET; /* just use the arg's location */ \
+ sv_setsv(TARG, tmpsv); \
+ if (opASSIGN) \
+ sp--; \
+ SETTARG; \
+ } \
+ PUTBACK; \
+ if (jump) { \
+ OP *jump_o = NORMAL->op_next; \
+ while (jump_o->op_type == OP_NULL) \
+ jump_o = jump_o->op_next; \
+ assert(jump_o->op_type == OP_ENTERSUB); \
+ (void)POPMARK; \
+ return jump_o->op_next; \
+ } \
+ return NORMAL; \
+ } \
+ } STMT_END
+
+/* This is no longer used anywhere in the core. You might wish to consider
+ calling amagic_deref_call() directly, as it has a cleaner interface. */
+#define tryAMAGICunDEREF(meth) \
+ STMT_START { \
+ sv = amagic_deref_call(*sp, CAT2(meth,_amg)); \
+ SPAGAIN; \
+ } STMT_END
-#define tryAMAGICbinW(meth,assign,set) STMT_START { \
- if (PL_amagic_generation) { \
- SV* tmpsv; \
- SV* right= *(sp); SV* left= *(sp-1);\
- if ((SvAMAGIC(left)||SvAMAGIC(right))&&\
- (tmpsv=amagic_call(left, \
- right, \
- CAT2(meth,_amg), \
- (assign)? AMGf_assign: 0))) {\
- SPAGAIN; \
- (void)POPs; set(tmpsv); RETURN; } \
- } \
- } STMT_END
-
-#define tryAMAGICbin(meth,assign) tryAMAGICbinW(meth,assign,SETsv)
-#define tryAMAGICbinSET(meth,assign) tryAMAGICbinW(meth,assign,SETs)
-
-#define AMG_CALLun(sv,meth) amagic_call(sv,&PL_sv_undef, \
- CAT2(meth,_amg),AMGf_noright | AMGf_unary)
-#define AMG_CALLbinL(left,right,meth) \
- amagic_call(left,right,CAT2(meth,_amg),AMGf_noright)
-
-#define tryAMAGICunW(meth,set,shift,ret) STMT_START { \
- if (PL_amagic_generation) { \
- SV* tmpsv; \
- SV* arg= sp[shift]; \
- am_again: \
- if ((SvAMAGIC(arg))&&\
- (tmpsv=AMG_CALLun(arg,meth))) {\
- SPAGAIN; if (shift) sp += shift; \
- set(tmpsv); ret; } \
- } \
- } STMT_END
-
-#define FORCE_SETs(sv) STMT_START { sv_setsv(TARG, (sv)); SETTARG; } STMT_END
-
-#define tryAMAGICun(meth) tryAMAGICunW(meth,SETsvUN,0,RETURN)
-#define tryAMAGICunSET(meth) tryAMAGICunW(meth,SETs,0,RETURN)
-#define tryAMAGICunTARGET(meth, shift) \
- { dSP; sp--; /* get TARGET from below PL_stack_sp */ \
- { dTARGETSTACKED; \
- { dSP; tryAMAGICunW(meth,FORCE_SETs,shift,RETURN);}}}
-
-#define setAGAIN(ref) sv = ref; \
- if (!SvROK(ref)) \
- Perl_croak(aTHX_ "Overloaded dereference did not return a reference"); \
- if (ref != arg && SvRV(ref) != SvRV(arg)) { \
- arg = ref; \
- goto am_again; \
- }
-
-#define tryAMAGICunDEREF(meth) tryAMAGICunW(meth,setAGAIN,0,(void)0)
#define opASSIGN (PL_op->op_flags & OPf_STACKED)
-#define SETsv(sv) STMT_START { \
- if (opASSIGN || (SvFLAGS(TARG) & SVs_PADMY)) \
- { sv_setsv(TARG, (sv)); SETTARG; } \
- else SETs(sv); } STMT_END
-
-#define SETsvUN(sv) STMT_START { \
- if (SvFLAGS(TARG) & SVs_PADMY) \
- { sv_setsv(TARG, (sv)); SETTARG; } \
- else SETs(sv); } STMT_END
-
-/* newSVsv does not behave as advertised, so we copy missing
- * information by hand */
-
-/* SV* ref causes confusion with the member variable
- changed SV* ref to SV* tmpRef */
-#define RvDEEPCP(rv) STMT_START { SV* tmpRef=SvRV(rv); \
- if (SvREFCNT(tmpRef)>1) { \
- SvREFCNT_dec(tmpRef); \
- SvRV(rv)=AMG_CALLun(rv,copy); \
- } } STMT_END
/*
=for apidoc mU||LVRET
=cut */
#define LVRET ((PL_op->op_private & OPpMAYBE_LVSUB) && is_lvalue_sub())
+
+#define SvCANEXISTDELETE(sv) \
+ (!SvRMAGICAL(sv) \
+ || !(mg = mg_find((const SV *) sv, PERL_MAGIC_tied)) \
+ || ( (stash = SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(sv), mg)))) \
+ && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) \
+ && gv_fetchmethod_autoload(stash, "DELETE", TRUE) \
+ ) \
+ )
+
+#ifdef PERL_CORE
+
+/* These are just for Perl_tied_method(), which is not part of the public API.
+ Use 0x04 rather than the next available bit, to help the compiler if the
+ architecture can generate more efficient instructions. */
+# define TIED_METHOD_MORTALIZE_NOT_NEEDED 0x04
+# define TIED_METHOD_ARGUMENTS_ON_STACK 0x08
+# define TIED_METHOD_SAY 0x10
+
+/* Used in various places that need to dereference a glob or globref */
+# define MAYBE_DEREF_GV_flags(sv,phlags) \
+ ( \
+ (void)(phlags & SV_GMAGIC && (SvGETMAGIC(sv),0)), \
+ isGV_with_GP(sv) \
+ ? (GV *)(sv) \
+ : SvROK(sv) && SvTYPE(SvRV(sv)) <= SVt_PVLV && \
+ (SvGETMAGIC(SvRV(sv)), isGV_with_GP(SvRV(sv))) \
+ ? (GV *)SvRV(sv) \
+ : NULL \
+ )
+# define MAYBE_DEREF_GV(sv) MAYBE_DEREF_GV_flags(sv,SV_GMAGIC)
+# define MAYBE_DEREF_GV_nomg(sv) MAYBE_DEREF_GV_flags(sv,0)
+
+# define FIND_RUNCV_padid_eq 1
+# define FIND_RUNCV_level_eq 2
+
+#endif
+
+/*
+ * ex: set ts=8 sts=4 sw=4 et:
+ */