X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=scope.h;h=0b9a483515b2422eeb18aaa8e8c94c39bd5405e1;hb=a5871d1a83cd3d5c7292135cbb30a336a8552ab0;hp=6c753c51eed1e9e67b7b7536fa601b744af28310;hpb=79072805bf63abe5b5978b5928ab00d360ea3e7f;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/scope.h b/scope.h
index 6c753c5..0b9a483 100644
--- a/scope.h
+++ b/scope.h
@@ -3,16 +3,145 @@
 #define SAVEt_AV	2
 #define SAVEt_HV	3
 #define SAVEt_INT	4
-#define SAVEt_I32	5
-#define SAVEt_SPTR	6
-#define SAVEt_HPTR	7
-#define SAVEt_APTR	8
-#define SAVEt_NSTAB	9
-#define SAVEt_SVREF	10
-#define SAVEt_GP	11
+#define SAVEt_LONG	5
+#define SAVEt_I32	6
+#define SAVEt_IV	7
+#define SAVEt_SPTR	8
+#define SAVEt_APTR	9
+#define SAVEt_HPTR	10
+#define SAVEt_PPTR	11
+#define SAVEt_NSTAB	12
+#define SAVEt_SVREF	13
+#define SAVEt_GP	14
+#define SAVEt_FREESV	15
+#define SAVEt_FREEOP	16
+#define SAVEt_FREEPV	17
+#define SAVEt_CLEARSV	18
+#define SAVEt_DELETE	19
+#define SAVEt_DESTRUCTOR 20
+#define SAVEt_REGCONTEXT 21
+#define SAVEt_STACK_POS  22
+#define SAVEt_I16	23
+#define SAVEt_AELEM     24
+#define SAVEt_HELEM     25
+#define SAVEt_OP	26
 
 #define SSCHECK(need) if (savestack_ix + need > savestack_max) savestack_grow()
 #define SSPUSHINT(i) (savestack[savestack_ix++].any_i32 = (I32)(i))
+#define SSPUSHLONG(i) (savestack[savestack_ix++].any_long = (long)(i))
+#define SSPUSHIV(i) (savestack[savestack_ix++].any_iv = (IV)(i))
 #define SSPUSHPTR(p) (savestack[savestack_ix++].any_ptr = (void*)(p))
+#define SSPUSHDPTR(p) (savestack[savestack_ix++].any_dptr = (p))
 #define SSPOPINT (savestack[--savestack_ix].any_i32)
+#define SSPOPLONG (savestack[--savestack_ix].any_long)
+#define SSPOPIV (savestack[--savestack_ix].any_iv)
 #define SSPOPPTR (savestack[--savestack_ix].any_ptr)
+#define SSPOPDPTR (savestack[--savestack_ix].any_dptr)
+
+#define SAVETMPS save_int((int*)&tmps_floor), tmps_floor = tmps_ix
+#define FREETMPS if (tmps_ix > tmps_floor) free_tmps()
+
+#ifdef DEBUGGING
+#define ENTER							\
+    STMT_START {						\
+	push_scope();						\
+	DEBUG_l(WITH_THR(deb("ENTER scope %ld at %s:%d\n",	\
+		    scopestack_ix, __FILE__, __LINE__)));	\
+    } STMT_END
+#define LEAVE							\
+    STMT_START {						\
+	DEBUG_l(WITH_THR(deb("LEAVE scope %ld at %s:%d\n",	\
+		    scopestack_ix, __FILE__, __LINE__)));	\
+	pop_scope();						\
+    } STMT_END
+#else
+#define ENTER push_scope()
+#define LEAVE pop_scope()
+#endif
+#define LEAVE_SCOPE(old) if (savestack_ix > old) leave_scope(old)
+
+/*
+ * Not using SOFT_CAST on SAVEFREESV and SAVEFREESV
+ * because these are used for several kinds of pointer values
+ */
+#define SAVEI16(i)	save_I16(SOFT_CAST(I16*)&(i))
+#define SAVEI32(i)	save_I32(SOFT_CAST(I32*)&(i))
+#define SAVEINT(i)	save_int(SOFT_CAST(int*)&(i))
+#define SAVEIV(i)	save_iv(SOFT_CAST(IV*)&(i))
+#define SAVELONG(l)	save_long(SOFT_CAST(long*)&(l))
+#define SAVESPTR(s)	save_sptr((SV**)&(s))
+#define SAVEPPTR(s)	save_pptr(SOFT_CAST(char**)&(s))
+#define SAVEFREESV(s)	save_freesv((SV*)(s))
+#define SAVEFREEOP(o)	save_freeop(SOFT_CAST(OP*)(o))
+#define SAVEFREEPV(p)	save_freepv(SOFT_CAST(char*)(p))
+#define SAVECLEARSV(sv)	save_clearsv(SOFT_CAST(SV**)&(sv))
+#define SAVEDELETE(h,k,l) \
+	  save_delete(SOFT_CAST(HV*)(h), SOFT_CAST(char*)(k), (I32)(l))
+#define SAVEDESTRUCTOR(f,p) \
+	  save_destructor(SOFT_CAST(void(*)_((void*)))(f),SOFT_CAST(void*)(p))
+#define SAVESTACK_POS() STMT_START {	\
+    SSCHECK(2);				\
+    SSPUSHINT(stack_sp - stack_base);	\
+    SSPUSHINT(SAVEt_STACK_POS);		\
+ } STMT_END
+#define SAVEOP()	save_op()
+
+/* A jmpenv packages the state required to perform a proper non-local jump.
+ * Note that there is a start_env initialized when perl starts, and top_env
+ * points to this initially, so top_env should always be non-null.
+ *
+ * Existence of a non-null top_env->je_prev implies it is valid to call
+ * longjmp() at that runlevel (we make sure start_env.je_prev is always
+ * null to ensure this).
+ *
+ * je_mustcatch, when set at any runlevel to TRUE, means eval ops must
+ * establish a local jmpenv to handle exception traps.  Care must be taken
+ * to restore the previous value of je_mustcatch before exiting the
+ * stack frame iff JMPENV_PUSH was not called in that stack frame.
+ * GSAR 97-03-27
+ */
+
+struct jmpenv {
+    struct jmpenv *	je_prev;
+    Sigjmp_buf		je_buf;		
+    int			je_ret;		/* return value of last setjmp() */
+    bool		je_mustcatch;	/* longjmp()s must be caught locally */
+};
+
+typedef struct jmpenv JMPENV;
+
+#ifdef OP_IN_REGISTER
+#define OP_REG_TO_MEM	opsave = op
+#define OP_MEM_TO_REG	op = opsave
+#else
+#define OP_REG_TO_MEM	NOOP
+#define OP_MEM_TO_REG	NOOP
+#endif
+
+#define dJMPENV		JMPENV cur_env
+#define JMPENV_PUSH(v) \
+    STMT_START {					\
+	cur_env.je_prev = top_env;			\
+	OP_REG_TO_MEM;					\
+	cur_env.je_ret = PerlProc_setjmp(cur_env.je_buf, 1);	\
+	OP_MEM_TO_REG;					\
+	top_env = &cur_env;				\
+	cur_env.je_mustcatch = FALSE;			\
+	(v) = cur_env.je_ret;				\
+    } STMT_END
+#define JMPENV_POP \
+    STMT_START { top_env = cur_env.je_prev; } STMT_END
+#define JMPENV_JUMP(v) \
+    STMT_START {						\
+	OP_REG_TO_MEM;						\
+	if (top_env->je_prev)					\
+	    PerlProc_longjmp(top_env->je_buf, (v));			\
+	if ((v) == 2)						\
+	    PerlProc_exit(STATUS_NATIVE_EXPORT);				\
+	PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");	\
+	PerlProc_exit(1);						\
+    } STMT_END
+   
+#define CATCH_GET	(top_env->je_mustcatch)
+#define CATCH_SET(v)	(top_env->je_mustcatch = (v))
+