X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=XSUB.h;h=b3ea825519f6daa48c6f0fef0a57a872e586aff0;hb=b851de6cd1cc79b5e8ed7db02ebd0a9769d34232;hp=a8a193b20f456d064984040f8ffc4b10de0b46f3;hpb=8990e3071044a96302560bbdb5706f3e74cf1bef;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/XSUB.h b/XSUB.h
index a8a193b..b3ea825 100644
--- a/XSUB.h
+++ b/XSUB.h
@@ -1 +1,59 @@
-#define ST(s) stack_base[ax + s]
+#define ST(off) stack_base[ax + (off)]
+
+#ifdef CAN_PROTOTYPE
+#define XS(name) void name(CV* cv)
+#else
+#define XS(name) void name(cv) CV* cv;
+#endif
+
+#define dXSARGS				\
+	dTHR; dSP; dMARK;		\
+	I32 ax = mark - stack_base + 1;	\
+	I32 items = sp - mark
+
+#define XSANY CvXSUBANY(cv)
+
+#define dXSI32 I32 ix = XSANY.any_i32
+
+#define XSRETURN(off) stack_sp = stack_base + ax + ((off) - 1); return
+
+/* Simple macros to put new mortal values onto the stack.   */
+/* Typically used to return values from XS functions.       */
+#define XST_mIV(i,v)  (ST(i) = sv_2mortal(newSViv(v))  )
+#define XST_mNV(i,v)  (ST(i) = sv_2mortal(newSVnv(v))  )
+#define XST_mPV(i,v)  (ST(i) = sv_2mortal(newSVpv(v,0)))
+#define XST_mNO(i)    (ST(i) = &sv_no   )
+#define XST_mYES(i)   (ST(i) = &sv_yes  )
+#define XST_mUNDEF(i) (ST(i) = &sv_undef)
+ 
+#define XSRETURN_IV(v) STMT_START { XST_mIV(0,v);  XSRETURN(1); } STMT_END
+#define XSRETURN_NV(v) STMT_START { XST_mNV(0,v);  XSRETURN(1); } STMT_END
+#define XSRETURN_PV(v) STMT_START { XST_mPV(0,v);  XSRETURN(1); } STMT_END
+#define XSRETURN_NO    STMT_START { XST_mNO(0);    XSRETURN(1); } STMT_END
+#define XSRETURN_YES   STMT_START { XST_mYES(0);   XSRETURN(1); } STMT_END
+#define XSRETURN_UNDEF STMT_START { XST_mUNDEF(0); XSRETURN(1); } STMT_END
+#define XSRETURN_EMPTY STMT_START {                XSRETURN(0); } STMT_END
+
+#define newXSproto(a,b,c,d)	sv_setpv((SV*)newXS(a,b,c), d)
+
+#ifdef XS_VERSION
+# define XS_VERSION_BOOTCHECK \
+    STMT_START {							\
+	char *vn = "", *module = SvPV(ST(0),na);			\
+	if (items >= 2)	 /* version supplied as bootstrap arg */	\
+	    Sv = ST(1);							\
+	else {								\
+	    /* XXX GV_ADDWARN */					\
+	    Sv = perl_get_sv(form("%s::%s", module,			\
+				  vn = "XS_VERSION"), FALSE);		\
+	    if (!Sv || !SvOK(Sv))					\
+		Sv = perl_get_sv(form("%s::%s", module,			\
+				      vn = "VERSION"), FALSE);		\
+	}								\
+	if (Sv && (!SvOK(Sv) || strNE(XS_VERSION, SvPV(Sv, na))))	\
+	    croak("%s object version %s does not match $%s::%s %_",	\
+		  module, XS_VERSION, module, vn, Sv);			\
+    } STMT_END
+#else
+# define XS_VERSION_BOOTCHECK
+#endif