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root/cebix/BasiliskII/src/uae_cpu/readcpu.cpp

Comparing BasiliskII/src/uae_cpu/readcpu.cpp (file contents):
Revision 1.8 by gbeauche, 2002-11-02T17:23:20Z vs.
Revision 1.9 by gbeauche, 2005-06-06T19:22:56Z

#	Line 754 | Line 754 | static void build_insn (int insn)
754		}
755		#endif
756
757	+	// Fix flags used information for Scc, Bcc, TRAPcc, DBcc instructions
758	+	if      (       table68k[opc].mnemo == i_Scc
759	+	||      table68k[opc].mnemo == i_Bcc
760	+	||      table68k[opc].mnemo == i_DBcc
761	+	||      table68k[opc].mnemo == i_TRAPcc
762	+	)       {
763	+	switch (table68k[opc].cc) {
764	+	// CC mask:     XNZVC
765	+	//                       8421
766	+	case 0: flags_used = 0x00; break;       /*  T */
767	+	case 1: flags_used = 0x00; break;       /*  F */
768	+	case 2: flags_used = 0x05; break;       /* HI */
769	+	case 3: flags_used = 0x05; break;       /* LS */
770	+	case 4: flags_used = 0x01; break;       /* CC */
771	+	case 5: flags_used = 0x01; break;       /* CS */
772	+	case 6: flags_used = 0x04; break;       /* NE */
773	+	case 7: flags_used = 0x04; break;       /* EQ */
774	+	case 8: flags_used = 0x02; break;       /* VC */
775	+	case 9: flags_used = 0x02; break;       /* VS */
776	+	case 10:flags_used = 0x08; break;       /* PL */
777	+	case 11:flags_used = 0x08; break;       /* MI */
778	+	case 12:flags_used = 0x0A; break;       /* GE */
779	+	case 13:flags_used = 0x0A; break;       /* LT */
780	+	case 14:flags_used = 0x0E; break;       /* GT */
781	+	case 15:flags_used = 0x0E; break;       /* LE */
782	+	}
783	+	}
784	+
785		#if 1
786		/* gb-- flagdead and flaglive would not have correct information */
787		table68k[opc].flagdead = flags_set;
#	Line 781 | Line 809 | void read_table68k (void)
809		for (i = 0; i < n_defs68k; i++) {
810		build_insn (i);
811		}
784	–
785	–	/* Extra fixes in table68k for control flow information and flag usage */
786	–	for (i = 0; i < 65536; i++) {
787	–	instrmnem mnemo = (instrmnem)(table68k[i].mnemo);
788	–
789	–	#define IS_CONST_JUMP(opc) \
790	–	(       ((table68k[opc].mnemo == i_Bcc) && (table68k[opc].cc < 2)) \
791	–	||      (table68k[opc].mnemo == i_BSR) \
792	–	)
793	–
794	–	// Precise const jumps as such. The JIT compiler will take
795	–	// care to actually enable that optimization or not
796	–	if (IS_CONST_JUMP(i))
797	–	table68k[i].cflow |= fl_const_jump;
798	–
799	–	// Fix flags used information for Scc, Bcc, TRAPcc, DBcc instructions
800	–	int flags_used = table68k[i].flaglive;
801	–	if      (       (mnemo == i_Scc)
802	–	||      (mnemo == i_Bcc)
803	–	||      (mnemo == i_DBcc)
804	–	||      (mnemo == i_TRAPcc)
805	–	)       {
806	–	switch (table68k[i].cc) {
807	–	// CC mask:     XNZVC
808	–	//                       8421
809	–	case 0: flags_used = 0x00; break;       /*  T */
810	–	case 1: flags_used = 0x00; break;       /*  F */
811	–	case 2: flags_used = 0x05; break;       /* HI */
812	–	case 3: flags_used = 0x05; break;       /* LS */
813	–	case 4: flags_used = 0x01; break;       /* CC */
814	–	case 5: flags_used = 0x01; break;       /* CS */
815	–	case 6: flags_used = 0x04; break;       /* NE */
816	–	case 7: flags_used = 0x04; break;       /* EQ */
817	–	case 8: flags_used = 0x02; break;       /* VC */
818	–	case 9: flags_used = 0x02; break;       /* VS */
819	–	case 10:flags_used = 0x08; break;       /* PL */
820	–	case 11:flags_used = 0x08; break;       /* MI */
821	–	case 12:flags_used = 0x0A; break;       /* GE */
822	–	case 13:flags_used = 0x0A; break;       /* LT */
823	–	case 14:flags_used = 0x0E; break;       /* GT */
824	–	case 15:flags_used = 0x0E; break;       /* LE */
825	–	}
826	–	}
827	–
828	–	/* Unconditional jumps don't evaluate condition codes, so they
829	–	don't actually use any flags themselves */
830	–	if (IS_CONST_JUMP(i))
831	–	flags_used = 0;
832	–
833	–	table68k[i].flaglive = flags_used;
834	–	}
812		}
813
814		static int mismatch;

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