/* src/vm/jit/verify/typecheck-builtins.inc - type checking for ICMD_BUILTIN

   Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
   C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   J. Wenninger, Institut f. Computersprachen - TU Wien

   This file is part of CACAO.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2, or (at
   your option) any later version.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

   Contact: cacao@cacaojvm.org

   Authors: Edwin Steiner

   Changes: 

   $Id$

*/


#define ISBUILTIN(v)   (bte->fp == (functionptr) (v))

{
	builtintable_entry *bte;

	bte = state->iptr->sx.s23.s3.bte;

	/* XXX this is an ugly if-chain but twisti did not want a function */
	/* pointer in builtintable_entry for this, so here you go.. ;)     */

	if (ISBUILTIN(BUILTIN_new)) {
		dv->type = TYPE_ADR;
#if defined(TYPECHECK_TYPEINFERER)
		assert(state->iptr[-1].opc == ICMD_ACONST);
		typeinfo_init_class(&(dv->typeinfo), state->iptr[-1].sx.val.c);
#else
		if (state->iptr[-1].opc != ICMD_ACONST)
			TYPECHECK_VERIFYERROR_bool("illegal instruction: builtin_new without class");
		TYPEINFO_INIT_NEWOBJECT(dv->typeinfo,state->iptr);
#endif
	}
	else if (ISBUILTIN(BUILTIN_newarray_boolean)) {
		TYPECHECK_INT(OP1);
		dv->type = TYPE_ADR;
		TYPEINFO_INIT_PRIMITIVE_ARRAY(dv->typeinfo,ARRAYTYPE_BOOLEAN);
	}
	else if (ISBUILTIN(BUILTIN_newarray_char)) {
		TYPECHECK_INT(OP1);
		dv->type = TYPE_ADR;
		TYPEINFO_INIT_PRIMITIVE_ARRAY(dv->typeinfo,ARRAYTYPE_CHAR);
	}
	else if (ISBUILTIN(BUILTIN_newarray_float)) {
		TYPECHECK_INT(OP1);
		dv->type = TYPE_ADR;
		TYPEINFO_INIT_PRIMITIVE_ARRAY(dv->typeinfo,ARRAYTYPE_FLOAT);
	}
	else if (ISBUILTIN(BUILTIN_newarray_double)) {
		TYPECHECK_INT(OP1);
		dv->type = TYPE_ADR;
		TYPEINFO_INIT_PRIMITIVE_ARRAY(dv->typeinfo,ARRAYTYPE_DOUBLE);
	}
	else if (ISBUILTIN(BUILTIN_newarray_byte)) {
		TYPECHECK_INT(OP1);
		dv->type = TYPE_ADR;
		TYPEINFO_INIT_PRIMITIVE_ARRAY(dv->typeinfo,ARRAYTYPE_BYTE);
	}
	else if (ISBUILTIN(BUILTIN_newarray_short)) {
		TYPECHECK_INT(OP1);
		dv->type = TYPE_ADR;
		TYPEINFO_INIT_PRIMITIVE_ARRAY(dv->typeinfo,ARRAYTYPE_SHORT);
	}
	else if (ISBUILTIN(BUILTIN_newarray_int)) {
		TYPECHECK_INT(OP1);
		dv->type = TYPE_ADR;
		TYPEINFO_INIT_PRIMITIVE_ARRAY(dv->typeinfo,ARRAYTYPE_INT);
	}
	else if (ISBUILTIN(BUILTIN_newarray_long)) {
		TYPECHECK_INT(OP1);
		dv->type = TYPE_ADR;
		TYPEINFO_INIT_PRIMITIVE_ARRAY(dv->typeinfo,ARRAYTYPE_LONG);
	}
	else if (ISBUILTIN(BUILTIN_newarray))
	{
		TYPECHECK_INT(OP1);
		if (state->iptr[-1].opc != ICMD_ACONST)
			TYPECHECK_VERIFYERROR_bool("illegal instruction: builtin_newarray without class");
		/* XXX check that it is an array class(ref) */
		dv->type = TYPE_ADR;
		typeinfo_init_class(&(dv->typeinfo),state->iptr[-1].sx.val.c);
	}
	else if (ISBUILTIN(BUILTIN_arrayinstanceof))
	{
		TYPECHECK_ADR(OP1);
		if (state->iptr[-1].opc != ICMD_ACONST)
			TYPECHECK_VERIFYERROR_bool("illegal instruction: builtin_arrayinstanceof without class");
		dv->type = TYPE_INT;
		/* XXX check that it is an array class(ref) */
	}
	else {
		methoddesc *md;
		u1 rtype;
#if !defined(TYPECHECK_TYPEINFERER)
		s4 i;
#endif
#if defined(TYPECHECK_STACKBASED)
		typedescriptor *av;
#endif

		/* verify a generic builtin call */

		TYPECHECK_COUNT(stat_ins_builtin_gen);

		md = bte->md;
#if !defined(TYPECHECK_TYPEINFERER)
		i = md->paramcount;

		/* check the types of the arguments on the stack */

#if defined(TYPECHECK_STACKBASED)
		av = stack - (md->paramslots - 1);
#endif

		for (i--; i >= 0; i--) {
#if defined(TYPECHECK_VARIABLESBASED)
			varinfo *av = VAR(state->iptr->sx.s23.s2.args[i]);
#endif

			if (av->type != md->paramtypes[i].type) {
				TYPECHECK_VERIFYERROR_bool("parameter type mismatch for builtin method");
			}

#ifdef TYPECHECK_DEBUG
			/* generic builtins may only take primitive types and java.lang.Object references */
			if (av->type == TYPE_ADR && md->paramtypes[i].classref->name != utf_java_lang_Object) {
				*exceptionptr = new_internalerror("generic builtin method with non-generic reference parameter");
				return false;
			}
#endif

#if defined(TYPECHECK_STACKBASED)
			av += (IS_2_WORD_TYPE(av->type)) ? 2 : 1;
#endif
		}
#endif /* !defined(TYPECHECK_TYPEINFERER) */

		/* set the return type */

		rtype = md->returntype.type;
		if (rtype != TYPE_VOID) {
			dv->type = rtype;
			if (!typeinfo_init_from_typedesc(&(md->returntype),NULL,&(dv->typeinfo)))
				return false;
		}
	}
}

#undef ISBUILTIN

/*
 * These are local overrides for various environment variables in Emacs.
 * Please do not remove this and leave it at the end of the file, where
 * Emacs will automagically detect them.
 * ---------------------------------------------------------------------
 * Local variables:
 * mode: c
 * indent-tabs-mode: t
 * c-basic-offset: 4
 * tab-width: 4
 * End:
 * vim:noexpandtab:sw=4:ts=4:filetype=c:
 */