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root/cebix/BasiliskII/src/uae_cpu/gencpu.c

Comparing BasiliskII/src/uae_cpu/gencpu.c (file contents):
Revision 1.13 by gbeauche, 2001-03-20T17:35:46Z vs.
Revision 1.15 by gbeauche, 2001-08-19T16:21:01Z

#	Line 715 | Line 715 | static void genflags_normal (flagtypes t
715
716		static void genflags (flagtypes type, wordsizes size, char *value, char *src, char *dst)
717		{
718	<	#ifdef SPARC_V8_ASSEMBLY
719	<	switch(type)
720	<	{
721	<	case flag_add:
722	<	start_brace();
723	<	printf("\tuae_u32 %s;\n", value);
724	<	switch(size)
725	<	{
726	<	case sz_byte:
727	<	printf("\t%s = sparc_v8_flag_add_8(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
728	<	break;
729	<	case sz_word:
730	<	printf("\t%s = sparc_v8_flag_add_16(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
731	<	break;
732	<	case sz_long:
733	<	printf("\t%s = sparc_v8_flag_add_32(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
734	<	break;
735	<	}
736	<	return;
737	<
738	<	case flag_sub:
739	<	start_brace();
740	<	printf("\tuae_u32 %s;\n", value);
741	<	switch(size)
742	<	{
743	<	case sz_byte:
744	<	printf("\t%s = sparc_v8_flag_sub_8(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
745	<	break;
746	<	case sz_word:
747	<	printf("\t%s = sparc_v8_flag_sub_16(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
748	<	break;
749	<	case sz_long:
750	<	printf("\t%s = sparc_v8_flag_sub_32(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
751	<	break;
752	<	}
753	<	return;
754	<
755	<	case flag_cmp:
756	<	switch(size)
757	<	{
758	<	case sz_byte:
759	<	//                                      printf("\tsparc_v8_flag_cmp_8(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
760	<	break;
761	<	case sz_word:
762	<	//                                      printf("\tsparc_v8_flag_cmp_16(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
763	<	break;
764	<	case sz_long:
765	<	#if 1
766	<	printf("\tsparc_v8_flag_cmp_32(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
767	<	return;
768	<	#endif
769	<	break;
770	<	}
771	<	//                      return;
772	<	break;
773	<	}
774	<	#elif defined(SPARC_V9_ASSEMBLY)
775	<	switch(type)
776	<	{
777	<	case flag_add:
778	<	start_brace();
779	<	printf("\tuae_u32 %s;\n", value);
780	<	switch(size)
781	<	{
782	<	case sz_byte:
783	<	printf("\t%s = sparc_v9_flag_add_8(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
784	<	break;
785	<	case sz_word:
786	<	printf("\t%s = sparc_v9_flag_add_16(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
787	<	break;
788	<	case sz_long:
789	<	printf("\t%s = sparc_v9_flag_add_32(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
790	<	break;
791	<	}
792	<	return;
793	<
794	<	case flag_sub:
795	<	start_brace();
796	<	printf("\tuae_u32 %s;\n", value);
797	<	switch(size)
798	<	{
799	<	case sz_byte:
800	<	printf("\t%s = sparc_v9_flag_sub_8(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
801	<	break;
802	<	case sz_word:
803	<	printf("\t%s = sparc_v9_flag_sub_16(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
804	<	break;
805	<	case sz_long:
806	<	printf("\t%s = sparc_v9_flag_sub_32(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
807	<	break;
808	<	}
809	<	return;
810	<
811	<	case flag_cmp:
812	<	switch(size)
813	<	{
814	<	case sz_byte:
815	<	printf("\tsparc_v9_flag_cmp_8(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
816	<	break;
817	<	case sz_word:
818	<	printf("\tsparc_v9_flag_cmp_16(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
819	<	break;
820	<	case sz_long:
821	<	printf("\tsparc_v9_flag_cmp_32(&regflags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
822	<	break;
823	<	}
824	<	return;
825	<
826	<	case flag_logical:
827	<	if (strcmp(value, "0") == 0) {
828	<	printf("\tregflags.nzvc = 0x04;\n");
829	<	} else {
830	<	switch(size) {
831	<	case sz_byte:
832	<	printf("\tsparc_v9_flag_test_8(&regflags, (uae_u32)(%s));\n", value);
833	<	break;
834	<	case sz_word:
835	<	printf("\tsparc_v9_flag_test_16(&regflags, (uae_u32)(%s));\n", value);
836	<	break;
837	<	case sz_long:
838	<	printf("\tsparc_v9_flag_test_32(&regflags, (uae_u32)(%s));\n", value);
839	<	break;
840	<	}
841	<	}
842	<	return;
843	<
844	<	#if 0
845	<	case flag_logical_noclobber:
846	<	printf("\t{uae_u32 old_flags = regflags.nzvc & ~0x0C;\n");
847	<	if (strcmp(value, "0") == 0) {
848	<	printf("\tregflags.nzvc = old_flags | 0x04;\n");
849	<	} else {
850	<	switch(size) {
851	<	case sz_byte:
852	<	printf("\tsparc_v9_flag_test_8(&regflags, (uae_u32)(%s));\n", value);
853	<	break;
854	<	case sz_word:
855	<	printf("\tsparc_v9_flag_test_16(&regflags, (uae_u32)(%s));\n", value);
856	<	break;
857	<	case sz_long:
858	<	printf("\tsparc_v9_flag_test_32(&regflags, (uae_u32)(%s));\n", value);
859	<	break;
860	<	}
861	<	printf("\tregflags.nzvc |= old_flags;\n");
862	<	}
863	<	printf("\t}\n");
864	<	return;
865	<	#endif
866	<	}
867	<	#elif defined(X86_ASSEMBLY)
718	>	/* Temporarily deleted 68k/ARM flag optimizations.  I'd prefer to have
719	>	them in the appropriate m68k.h files and use just one copy of this
720	>	code here.  The API can be changed if necessary.  */
721	>	#ifdef OPTIMIZED_FLAGS
722		switch (type) {
723		case flag_add:
724		case flag_sub:
#	Line 879 | Line 733 | static void genflags (flagtypes type, wo
733		/* At least some of those casts are fairly important! */
734		switch (type) {
735		case flag_logical_noclobber:
736	<	printf ("\t{uae_u32 oldcznv = regflags.cznv & ~0xC0;\n");
736	>	printf ("\t{uae_u32 oldcznv = GET_CZNV & ~(FLAGVAL_Z | FLAGVAL_N);\n");
737		if (strcmp (value, "0") == 0) {
738	<	printf ("\tregflags.cznv = olcznv | 64;\n");
738	>	printf ("\tSET_CZNV (olcznv | FLAGVAL_Z);\n");
739		} else {
740		switch (size) {
741	<	case sz_byte: printf ("\tx86_flag_testb ((uae_s8)(%s));\n", value); break;
742	<	case sz_word: printf ("\tx86_flag_testw ((uae_s16)(%s));\n", value); break;
743	<	case sz_long: printf ("\tx86_flag_testl ((uae_s32)(%s));\n", value); break;
741	>	case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
742	>	case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
743	>	case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
744		}
745	<	printf ("\tregflags.cznv |= oldcznv;\n");
745	>	printf ("\tIOR_CZNV (oldcznv);\n");
746		}
747		printf ("\t}\n");
748		return;
749		case flag_logical:
750		if (strcmp (value, "0") == 0) {
751	<	printf ("\tregflags.cznv = 64;\n");
751	>	printf ("\tSET_CZNV (FLAGVAL_Z);\n");
752		} else {
753		switch (size) {
754	<	case sz_byte: printf ("\tx86_flag_testb ((uae_s8)(%s));\n", value); break;
755	<	case sz_word: printf ("\tx86_flag_testw ((uae_s16)(%s));\n", value); break;
756	<	case sz_long: printf ("\tx86_flag_testl ((uae_s32)(%s));\n", value); break;
754	>	case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
755	>	case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
756	>	case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
757		}
758		}
759		return;
760
761		case flag_add:
762		switch (size) {
763	<	case sz_byte: printf ("\tx86_flag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
764	<	case sz_word: printf ("\tx86_flag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
765	<	case sz_long: printf ("\tx86_flag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
763	>	case sz_byte: printf ("\toptflag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
764	>	case sz_word: printf ("\toptflag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
765	>	case sz_long: printf ("\toptflag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
766		}
767		return;
768
769		case flag_sub:
770		switch (size) {
771	<	case sz_byte: printf ("\tx86_flag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
772	<	case sz_word: printf ("\tx86_flag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
773	<	case sz_long: printf ("\tx86_flag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
771	>	case sz_byte: printf ("\toptflag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
772	>	case sz_word: printf ("\toptflag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
773	>	case sz_long: printf ("\toptflag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
774		}
775		return;
776
777		case flag_cmp:
778		switch (size) {
779	<	case sz_byte: printf ("\tx86_flag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
780	<	case sz_word: printf ("\tx86_flag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
781	<	case sz_long: printf ("\tx86_flag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
779	>	case sz_byte: printf ("\toptflag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
780	>	case sz_word: printf ("\toptflag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
781	>	case sz_long: printf ("\toptflag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
782		}
783		return;
784
785		default:
786		break;
787		}
934	–	#elif defined(M68K_FLAG_OPT)
935	–	/* sam: here I'm cloning what X86_ASSEMBLY does */
936	–	#define EXT(size)  (size==sz_byte?"b":(size==sz_word?"w":"l"))
937	–	#define CAST(size) (size==sz_byte?"uae_s8":(size==sz_word?"uae_s16":"uae_s32"))
938	–	switch (type) {
939	–	case flag_add:
940	–	case flag_sub:
941	–	start_brace ();
942	–	printf ("\tuae_u32 %s;\n", value);
943	–	break;
944	–
945	–	default:
946	–	break;
947	–	}
948	–
949	–	switch (type) {
950	–	case flag_logical:
951	–	if (strcmp (value, "0") == 0) {
952	–	printf ("\t*(uae_u16 *)&regflags = 4;\n");  /* Z = 1 */
953	–	} else {
954	–	printf ("\tm68k_flag_tst (%s, (%s)(%s));\n",
955	–	EXT (size), CAST (size), value);
956	–	}
957	–	return;
958	–
959	–	case flag_add:
960	–	printf ("\t{uae_u16 ccr;\n");
961	–	printf ("\tm68k_flag_add (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
962	–	EXT (size), CAST (size), value, CAST (size), src, CAST (size), dst);
963	–	printf ("\t((uae_u16*)&regflags)[1]=((uae_u16*)&regflags)[0]=ccr;}\n");
964	–	return;
965	–
966	–	case flag_sub:
967	–	printf ("\t{uae_u16 ccr;\n");
968	–	printf ("\tm68k_flag_sub (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
969	–	EXT (size), CAST (size), value, CAST (size), src, CAST (size), dst);
970	–	printf ("\t((uae_u16*)&regflags)[1]=((uae_u16*)&regflags)[0]=ccr;}\n");
971	–	return;
972	–
973	–	case flag_cmp:
974	–	printf ("\tm68k_flag_cmp (%s, (%s)(%s), (%s)(%s));\n",
975	–	EXT (size), CAST (size), src, CAST (size), dst);
976	–	return;
977	–
978	–	default:
979	–	break;
980	–	}
981	–	#elif defined(ACORN_FLAG_OPT) && defined(__GNUC_MINOR__)
982	–	/*
983	–	* This is new. Might be quite buggy.
984	–	*/
985	–	switch (type) {
986	–	case flag_av:
987	–	case flag_sv:
988	–	case flag_zn:
989	–	case flag_addx:
990	–	case flag_subx:
991	–	break;
992	–
993	–	case flag_logical:
994	–	if (strcmp (value, "0") == 0) {
995	–	/* v=c=n=0 z=1 */
996	–	printf ("\t*(ULONG*)&regflags = 0x40000000;\n");
997	–	return;
998	–	} else {
999	–	start_brace ();
1000	–	switch (size) {
1001	–	case sz_byte:
1002	–	printf ("\tUBYTE ccr;\n");
1003	–	printf ("\tULONG shift;\n");
1004	–	printf ("\t__asm__(\"mov %%2,%%1,lsl#24\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
1005	–	"\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value);
1006	–	printf ("\t*((UBYTE*)&regflags+3) = ccr;\n");
1007	–	return;
1008	–	case sz_word:
1009	–	printf ("\tUBYTE ccr;\n");
1010	–	printf ("\tULONG shift;\n");
1011	–	printf ("\t__asm__(\"mov %%2,%%1,lsl#16\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
1012	–	"\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value);
1013	–	printf ("\t*((UBYTE*)&regflags+3) = ccr;\n");
1014	–	return;
1015	–	case sz_long:
1016	–	printf ("\tUBYTE ccr;\n");
1017	–	printf ("\t__asm__(\"tst %%1,%%1\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
1018	–	"\t: \"=r\" (ccr) : \"r\" ((LONG)%s) : \"cc\" );\n", value);
1019	–	printf ("\t*((UBYTE*)&regflags+3) = ccr;\n");
1020	–	return;
1021	–	}
1022	–	}
1023	–	break;
1024	–	case flag_add:
1025	–	if (strcmp (dst, "0") == 0) {
1026	–	printf ("/* Error! Hier muss Peter noch was machen !!! (ADD-Flags) */");
1027	–	} else {
1028	–	start_brace ();
1029	–	switch (size) {
1030	–	case sz_byte:
1031	–	printf ("\tULONG ccr, shift, %s;\n", value);
1032	–	printf ("\t__asm__(\"mov %%4,%%3,lsl#24\n\tadds %%0,%%4,%%2,lsl#24\n\tmov %%0,%%0,asr#24\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
1033	–	"\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
1034	–	printf ("\t*(ULONG*)&regflags = ccr;\n");
1035	–	return;
1036	–	case sz_word:
1037	–	printf ("\tULONG ccr, shift, %s;\n", value);
1038	–	printf ("\t__asm__(\"mov %%4,%%3,lsl#16\n\tadds %%0,%%4,%%2,lsl#16\n\tmov %%0,%%0,asr#16\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
1039	–	"\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
1040	–	printf ("\t*(ULONG*)&regflags = ccr;\n");
1041	–	return;
1042	–	case sz_long:
1043	–	printf ("\tULONG ccr, %s;\n", value);
1044	–	printf ("\t__asm__(\"adds %%0,%%3,%%2\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
1045	–	"\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
1046	–	printf ("\t*(ULONG*)&regflags = ccr;\n");
1047	–	return;
1048	–	}
1049	–	}
1050	–	break;
1051	–	case flag_sub:
1052	–	if (strcmp (dst, "0") == 0) {
1053	–	printf ("/* Error! Hier muss Peter noch was machen !!! (SUB-Flags) */");
1054	–	} else {
1055	–	start_brace ();
1056	–	switch (size) {
1057	–	case sz_byte:
1058	–	printf ("\tULONG ccr, shift, %s;\n", value);
1059	–	printf ("\t__asm__(\"mov %%4,%%3,lsl#24\n\tsubs %%0,%%4,%%2,lsl#24\n\tmov %%0,%%0,asr#24\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
1060	–	"\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
1061	–	printf ("\t*(ULONG*)&regflags = ccr;\n");
1062	–	return;
1063	–	case sz_word:
1064	–	printf ("\tULONG ccr, shift, %s;\n", value);
1065	–	printf ("\t__asm__(\"mov %%4,%%3,lsl#16\n\tsubs %%0,%%4,%%2,lsl#16\n\tmov %%0,%%0,asr#16\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
1066	–	"\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
1067	–	printf ("\t*(ULONG*)&regflags = ccr;\n");
1068	–	return;
1069	–	case sz_long:
1070	–	printf ("\tULONG ccr, %s;\n", value);
1071	–	printf ("\t__asm__(\"subs %%0,%%3,%%2\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
1072	–	"\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
1073	–	printf ("\t*(ULONG*)&regflags = ccr;\n");
1074	–	return;
1075	–	}
1076	–	}
1077	–	break;
1078	–	case flag_cmp:
1079	–	if (strcmp (dst, "0") == 0) {
1080	–	printf ("/*Error! Hier muss Peter noch was machen !!! (CMP-Flags)*/");
1081	–	} else {
1082	–	start_brace ();
1083	–	switch (size) {
1084	–	case sz_byte:
1085	–	printf ("\tULONG shift, ccr;\n");
1086	–	printf ("\t__asm__(\"mov %%3,%%2,lsl#24\n\tcmp %%3,%%1,lsl#24\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
1087	–	"\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", src, dst);
1088	–	printf ("\t*((UBYTE*)&regflags+3) = ccr;\n");
1089	–	return;
1090	–	case sz_word:
1091	–	printf ("\tULONG shift, ccr;\n");
1092	–	printf ("\t__asm__(\"mov %%3,%%2,lsl#16\n\tcmp %%3,%%1,lsl#16\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
1093	–	"\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", src, dst);
1094	–	printf ("\t*((UBYTE*)&regflags+3) = ccr;\n");
1095	–	return;
1096	–	case sz_long:
1097	–	printf ("\tULONG ccr;\n");
1098	–	printf ("\t__asm__(\"cmp %%2,%%1\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
1099	–	"\t: \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", src, dst);
1100	–	printf ("\t*((UBYTE*)&regflags+3) = ccr;\n");
1101	–	/*printf ("\tprintf (\"%%08x %%08x %%08x\\n\", %s, %s, *((ULONG*)&regflags));\n", src, dst); */
1102	–	return;
1103	–	}
1104	–	}
1105	–	break;
1106	–	}
788		#endif
789	+
790		genflags_normal (type, size, value, src, dst);
791		}
792
#	Line 1228 | Line 910 | static void gen_opcode (unsigned long in
910		genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
911		break;
912		case i_SBCD:
1231	–	/* Let's hope this works... */
913		genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
914		genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
915		start_brace ();
916		printf ("\tuae_u16 newv_lo = (dst & 0xF) - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
917		printf ("\tuae_u16 newv_hi = (dst & 0xF0) - (src & 0xF0);\n");
918	<	printf ("\tuae_u16 newv;\n");
919	<	printf ("\tint cflg;\n");
920	<	printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
921	<	printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
922	<	printf ("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
918	>	printf ("\tuae_u16 newv, tmp_newv;\n");
919	>	printf ("\tint bcd = 0;\n");
920	>	printf ("\tnewv = tmp_newv = newv_hi + newv_lo;\n");
921	>	printf ("\tif (newv_lo & 0xF0) { newv -= 6; bcd = 6; };\n");
922	>	printf ("\tif ((((dst & 0xFF) - (src & 0xFF) - (GET_XFLG ? 1 : 0)) & 0x100) > 0xFF) { newv -= 0x60; }\n");
923	>	printf ("\tSET_CFLG ((((dst & 0xFF) - (src & 0xFF) - bcd - (GET_XFLG ? 1 : 0)) & 0x300) > 0xFF);\n");
924		duplicate_carry ();
1243	–	printf ("\tif (cflg) newv -= 0x60;\n");
925		genflags (flag_zn, curi->size, "newv", "", "");
926	<	genflags (flag_sv, curi->size, "newv", "src", "dst");
926	>	printf ("\tSET_VFLG ((tmp_newv & 0x80) != 0 && (newv & 0x80) == 0);\n");
927		genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
928		break;
929		case i_ADD:
#	Line 1274 | Line 955 | static void gen_opcode (unsigned long in
955		start_brace ();
956		printf ("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + (GET_XFLG ? 1 : 0);\n");
957		printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n");
958	<	printf ("\tuae_u16 newv;\n");
958	>	printf ("\tuae_u16 newv, tmp_newv;\n");
959		printf ("\tint cflg;\n");
960	<	printf ("\tif (newv_lo > 9) { newv_lo +=6; }\n");
961	<	printf ("\tnewv = newv_hi + newv_lo;");
962	<	printf ("\tSET_CFLG (cflg = (newv & 0x1F0) > 0x90);\n");
1282	<	duplicate_carry ();
960	>	printf ("\tnewv = tmp_newv = newv_hi + newv_lo;");
961	>	printf ("\tif (newv_lo > 9) { newv += 6; }\n");
962	>	printf ("\tcflg = (newv & 0x3F0) > 0x90;\n");
963		printf ("\tif (cflg) newv += 0x60;\n");
964	+	printf ("\tSET_CFLG (cflg);\n");
965	+	duplicate_carry ();
966		genflags (flag_zn, curi->size, "newv", "", "");
967	<	genflags (flag_sv, curi->size, "newv", "src", "dst");
967	>	printf ("\tSET_VFLG ((tmp_newv & 0x80) == 0 && (newv & 0x80) != 0);\n");
968		genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
969		break;
970		case i_NEG:
#	Line 1306 | Line 988 | static void gen_opcode (unsigned long in
988		printf ("\tuae_u16 newv_hi = - (src & 0xF0);\n");
989		printf ("\tuae_u16 newv;\n");
990		printf ("\tint cflg;\n");
991	<	printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
992	<	printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
993	<	printf ("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
1312	<	duplicate_carry();
991	>	printf ("\tif (newv_lo > 9) { newv_lo -= 6; }\n");
992	>	printf ("\tnewv = newv_hi + newv_lo;");
993	>	printf ("\tcflg = (newv & 0x1F0) > 0x90;\n");
994		printf ("\tif (cflg) newv -= 0x60;\n");
995	+	printf ("\tSET_CFLG (cflg);\n");
996	+	duplicate_carry();
997		genflags (flag_zn, curi->size, "newv", "", "");
998		genastore ("newv", curi->smode, "srcreg", curi->size, "src");
999		break;
#	Line 1347 | Line 1030 | static void gen_opcode (unsigned long in
1030		else
1031		printf ("\tsrc &= 31;\n");
1032		printf ("\tdst ^= (1 << src);\n");
1033	<	printf ("\tSET_ZFLG ((dst & (1 << src)) >> src);\n");
1033	>	printf ("\tSET_ZFLG (((uae_u32)dst & (1 << src)) >> src);\n");
1034		genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
1035		break;
1036		case i_BCLR:
#	Line 1686 | Line 1369 | static void gen_opcode (unsigned long in
1369		printf ("\tuaecptr oldpc = m68k_getpc();\n");
1370		genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1371		genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1372	<	printf ("\tif(src == 0) { Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1372	>	sync_m68k_pc ();
1373	>	/* Clear V flag when dividing by zero - Alcatraz Odyssey demo depends
1374	>	* on this (actually, it's doing a DIVS).  */
1375	>	printf ("\tif (src == 0) { SET_VFLG (0); Exception (5, oldpc); goto %s; } else {\n", endlabelstr);
1376		printf ("\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
1377		printf ("\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
1378		/* The N flag appears to be set each time there is an overflow.
#	Line 1704 | Line 1390 | static void gen_opcode (unsigned long in
1390		printf ("\tuaecptr oldpc = m68k_getpc();\n");
1391		genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
1392		genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
1393	<	printf ("\tif(src == 0) { Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1393	>	sync_m68k_pc ();
1394	>	printf ("\tif (src == 0) { SET_VFLG (0); Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
1395		printf ("\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
1396		printf ("\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
1397		printf ("\tif ((newv & 0xffff8000) != 0 && (newv & 0xffff8000) != 0xffff8000) { SET_VFLG (1); SET_NFLG (1); SET_CFLG (0); } else\n\t{\n");
#	Line 1964 | Line 1651 | static void gen_opcode (unsigned long in
1651		}
1652		printf ("\tcnt &= 63;\n");
1653		printf ("\tCLEAR_CZNV;\n");
1967	–	if (! source_is_imm1_8 (curi))
1968	–	force_range_for_rox ("cnt", curi->size);
1654		if (source_is_imm1_8 (curi))
1655		printf ("{");
1656	<	else
1656	>	else {
1657	>	force_range_for_rox ("cnt", curi->size);
1658		printf ("\tif (cnt > 0) {\n");
1659	+	}
1660		printf ("\tcnt--;\n");
1661		printf ("\t{\n\tuae_u32 carry;\n");
1662		printf ("\tuae_u32 loval = val >> (%d - cnt);\n", bit_size (curi->size) - 1);
#	Line 1994 | Line 1681 | static void gen_opcode (unsigned long in
1681		}
1682		printf ("\tcnt &= 63;\n");
1683		printf ("\tCLEAR_CZNV;\n");
1997	–	if (! source_is_imm1_8 (curi))
1998	–	force_range_for_rox ("cnt", curi->size);
1684		if (source_is_imm1_8 (curi))
1685		printf ("{");
1686	<	else
1686	>	else {
1687	>	force_range_for_rox ("cnt", curi->size);
1688		printf ("\tif (cnt > 0) {\n");
1689	+	}
1690		printf ("\tcnt--;\n");
1691		printf ("\t{\n\tuae_u32 carry;\n");
1692		printf ("\tuae_u32 hival = (val << 1) | GET_XFLG;\n");
#	Line 2155 | Line 1842 | static void gen_opcode (unsigned long in
1842		start_brace ();
1843		printf ("\tint regno = (src >> 12) & 15;\n");
1844		printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1845	<	printf ("\tm68k_movec2(src & 0xFFF, regp);\n");
1845	>	printf ("\tif (! m68k_movec2(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1846		break;
1847		case i_MOVE2C:
1848		genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
1849		start_brace ();
1850		printf ("\tint regno = (src >> 12) & 15;\n");
1851		printf ("\tuae_u32 *regp = regs.regs + regno;\n");
1852	<	printf ("\tm68k_move2c(src & 0xFFF, regp);\n");
1852	>	printf ("\tif (! m68k_move2c(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
1853		break;
1854		case i_CAS:
1855		{

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