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Add integer shifts and fix code template errors for mul/div/mod One needs to remove stuff from the stack after putting it there. Actually do that in the code output for multiplication, division, and modulus. Add integer shifting code output which is optimized for constant shift counts but calls a routine for non-constant shift counts. Shifting by a negative amount is a no-op. Shifting by more than the size of an integer results in 0 (for left shifts) or -1 (for right shifts). Both negative shift counts and shift counts larger than the base type are undefined in the C standard so this behaviour is allowed.
author William Astle <lost@l-w.ca>
date Sat, 26 Oct 2019 22:01:55 -0600
parents e545196bf14f
children
line wrap: on
line source

/*
cycle.c

Copyright (c) 2015 Erik Gavriluk
Dual-licensed BSD 3-CLAUSE and GPL as per below.
Thanks to John Kowalksi for cycle count verification.

This file is part of LWTOOLS.

LWTOOLS 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
*/

#include "lwasm.h"

typedef struct
{
	int opc;
	int cycles_6809;
	int cycles_6309;
	cycle_flags flags;
} cycletable_t;

static cycletable_t cycletable[] =
{
	{ 0x3a, 3, 1, 0 },					// ABX

	{ 0x89, 2, 2, 0 },					// ADCA
	{ 0x99, 4, 3, 0 },
	{ 0xa9, 4, 4, CYCLE_ADJ },
	{ 0xb9, 5, 4, 0 },

	{ 0xc9, 2, 2, 0 },					// ADCB
	{ 0xd9, 4, 3, 0 },
	{ 0xe9, 4, 4, CYCLE_ADJ },
	{ 0xf9, 5, 4, 0 },

	{ 0x1089, 5, 4, 0 },				// ADCD
	{ 0x1099, 7, 5, 0 },
	{ 0x10a9, 7, 6, CYCLE_ADJ },
	{ 0x10b9, 8, 6, 0 },

	{ 0x8b, 2, 2, 0 },					// ADDA
	{ 0x9b, 4, 3, 0 },
	{ 0xab, 4, 4, CYCLE_ADJ },
	{ 0xbb, 5, 4, 0 },

	{ 0xcb, 2, 2, 0 },					// ADDB
	{ 0xdb, 4, 3, 0 },
	{ 0xeb, 4, 4, CYCLE_ADJ },
	{ 0xfb, 5, 4, 0 },

	{ 0xc3, 4, 3, 0 },					// ADDD
	{ 0xd3, 6, 4, 0 },
	{ 0xe3, 6, 5, CYCLE_ADJ },
	{ 0xf3, 7, 5, 0 },

	{ 0x118b, 3, 3, 0 },				// ADDE
	{ 0x119b, 5, 4, 0 },
	{ 0x11ab, 5, 5, CYCLE_ADJ },
	{ 0x11bb, 6, 5, 0 },

	{ 0x11cb, 3, 3, 0 },				// ADDF
	{ 0x11db, 5, 4, 0 },
	{ 0x11eb, 5, 5, CYCLE_ADJ },
	{ 0x11fb, 6, 5, 0 },

	{ 0x1031, 4, 4, 0 },				// ADCR
	{ 0x1030, 4, 4, 0 },				// ADDR
	{ 0x1034, 4, 4, 0 },				// ANDR
	{ 0x1037, 4, 4, 0 },				// CMPR
	{ 0x1036, 4, 4, 0 },				// EORR
	{ 0x1035, 4, 4, 0 },				// ORR
	{ 0x1033, 4, 4, 0 },				// SBCR
	{ 0x1032, 4, 4, 0 },				// SUBR

	{ 0x108b, 5, 4, 0 },				// ADDW
	{ 0x109b, 7, 5, 0 },
	{ 0x10ab, 7, 6, CYCLE_ADJ },
	{ 0x10bb, 8, 6, 0 },

	{ 0x02, 6, 6, 0 },					// AIM
	{ 0x62, 7, 7, CYCLE_ADJ },
	{ 0x72, 7, 7, 0 },

	{ 0x84, 2, 2, 0 },					// ANDA
	{ 0x94, 4, 3, 0 },
	{ 0xa4, 4, 4, CYCLE_ADJ },
	{ 0xb4, 5, 4, 0 },

	{ 0xc4, 2, 2, 0 },					// ANDB
	{ 0xd4, 4, 3, 0 },
	{ 0xe4, 4, 4, CYCLE_ADJ },
	{ 0xf4, 5, 4, 0 },

	{ 0x1c, 3, 2, 0 },					// ANDCC

	{ 0x1084, 5, 4, 0 },				// ANDD
	{ 0x1094, 7, 5, 0 },
	{ 0x10a4, 7, 6, CYCLE_ADJ },
	{ 0x10b4, 8, 6, 0 },

	{ 0x48, 2, 1, 0 },					// ASL
	{ 0x58, 2, 1, 0 },
	{ 0x1048, 3, 2, 0 },
	{ 0x08, 6, 5, 0 },
	{ 0x68, 6, 6, CYCLE_ADJ },
	{ 0x78, 7, 6, 0 },

	{ 0x47, 2, 1, 0 },					// ASR
	{ 0x57, 2, 1, 0 },
	{ 0x1047, 3, 2, 0 },
	{ 0x07, 6, 5, 0 },
	{ 0x67, 6, 6, CYCLE_ADJ },
	{ 0x77, 7, 6, 0 },

	{ 0x1130, 7, 6, 0 },				// BAND
	{ 0x1131, 7, 6, 0 },				// BIAND
	{ 0x1132, 7, 6, 0 },				// BOR
	{ 0x1133, 7, 6, 0 },				// BIOR
	{ 0x1134, 7, 6, 0 },				// BEOR
	{ 0x1135, 7, 6, 0 },				// BIEOR

	{ 0x85, 2, 2, 0 },					// BITA
	{ 0x95, 4, 3, 0 },
	{ 0xa5, 4, 4, CYCLE_ADJ },
	{ 0xb5, 5, 4, 0 },

	{ 0xc5, 2, 2, 0 },					// BITB
	{ 0xd5, 4, 3, 0 },
	{ 0xe5, 4, 4, CYCLE_ADJ },
	{ 0xf5, 5, 4, 0 },

	{ 0x1085, 5, 4, 0 },				// BITD
	{ 0x1095, 7, 5, 0 },
	{ 0x10a5, 7, 6, CYCLE_ADJ },
	{ 0x10b5, 8, 6, 0 },

	{ 0x113c, 4, 4, 0 },				// BITMD

	{ 0x20, 3, 3, 0 },					// BRA
	{ 0x21, 3, 3, 0 },
	{ 0x22, 3, 3, 0 },
	{ 0x23, 3, 3, 0 },
	{ 0x24, 3, 3, 0 },
	{ 0x25, 3, 3, 0 },
	{ 0x26, 3, 3, 0 },
	{ 0x27, 3, 3, 0 },
	{ 0x28, 3, 3, 0 },
	{ 0x29, 3, 3, 0 },
	{ 0x2a, 3, 3, 0 },
	{ 0x2b, 3, 3, 0 },
	{ 0x2c, 3, 3, 0 },
	{ 0x2d, 3, 3, 0 },
	{ 0x2e, 3, 3, 0 },
	{ 0x2f, 3, 3, 0 },

	{ 0x8d, 7, 6, 0 },					// BSR

	{ 0x4f, 2, 1, 0 },					// CLR
	{ 0x5f, 2, 1, 0 },
	{ 0x104f, 3, 2, 0 },
	{ 0x114f, 3, 2, 0 },
	{ 0x115f, 3, 2, 0 },
	{ 0x105f, 3, 2, 0 },
	{ 0x0f, 6, 5, 0 },
	{ 0x6f, 6, 6, CYCLE_ADJ },
	{ 0x7f, 7, 6, 0 },

	{ 0x81, 2, 2, 0 },					// CMPA
	{ 0x91, 4, 3, 0 },
	{ 0xa1, 4, 4, CYCLE_ADJ },
	{ 0xb1, 5, 4, 0 },

	{ 0xc1, 2, 2, 0 },					// CMPB
	{ 0xd1, 4, 3, 0 },
	{ 0xe1, 4, 4, CYCLE_ADJ },
	{ 0xf1, 5, 4, 0 },

	{ 0x1083, 5, 4, 0 },				// CMPD
	{ 0x1093, 7, 5, 0 },
	{ 0x10a3, 7, 6, CYCLE_ADJ },
	{ 0x10b3, 8, 6, 0 },

	{ 0x1181, 3, 3, 0 },				// CMPE
	{ 0x1191, 5, 4, 0 },
	{ 0x11a1, 5, 5, CYCLE_ADJ },
	{ 0x11b1, 6, 5, 0 },

	{ 0x11c1, 3, 3, 0 },				// CMPF
	{ 0x11d1, 5, 4, 0 },
	{ 0x11e1, 5, 5, CYCLE_ADJ },
	{ 0x11f1, 6, 5, 0 },

	{ 0x118c, 5, 4, 0 },				// CMPS
	{ 0x119c, 7, 5, 0 },
	{ 0x11ac, 7, 6, CYCLE_ADJ },
	{ 0x11bc, 8, 6, 0 },

	{ 0x1183, 5, 4, 0 },				// CMPU
	{ 0x1193, 7, 5, 0 },
	{ 0x11a3, 7, 6, CYCLE_ADJ },
	{ 0x11b3, 8, 6, 0 },

	{ 0x1081, 5, 4, 0 },				// CMPW
	{ 0x1091, 7, 5, 0 },
	{ 0x10a1, 7, 6, CYCLE_ADJ },
	{ 0x10b1, 8, 6, 0 },

	{ 0x8c, 4, 3, 0 },					// CMPX
	{ 0x9c, 6, 4, 0 },
	{ 0xac, 6, 5, CYCLE_ADJ },
	{ 0xbc, 7, 5, 0 },

	{ 0x108c, 5, 4, 0 },				// CMPY
	{ 0x109c, 7, 5, 0 },
	{ 0x10ac, 7, 6, CYCLE_ADJ },
	{ 0x10bc, 8, 6, 0 },

	{ 0x43, 2, 1, 0 },					// COMA
	{ 0x53, 2, 1, 0 },					// COMB
	{ 0x1043, 3, 2, 0 },				// COMD
	{ 0x1143, 3, 2, 0 },				// COME
	{ 0x1153, 3, 2, 0 },				// COMF
	{ 0x1053, 3, 2, 0 },				// COMW

	{ 0x03, 6, 5, 0 },					// COM
	{ 0x63, 6, 6, CYCLE_ADJ },
	{ 0x73, 7, 6, 0 },

	{ 0x3c, 22, 20, CYCLE_ESTIMATED },	// CWAI

	{ 0x19, 2, 1, 0 },					// DAA

	{ 0x4a, 2, 1, 0 },					// DECA
	{ 0x5a, 2, 1, 0 },					// DECB
	{ 0x104a, 3, 2, 0 },				// DECD
	{ 0x114a, 3, 2, 0 },				// DECE
	{ 0x115a, 3, 2, 0 },				// DECF
	{ 0x105a, 3, 2, 0 },				// DECW

	{ 0x0a, 6, 5, 0 },					// DEC
	{ 0x6a, 6, 6, CYCLE_ADJ },
	{ 0x7a, 7, 6, 0 },

	{ 0x118d, 25, 25, 0 },				// DIVD
	{ 0x119d, 27, 26, 0 },
	{ 0x11ad, 27, 27, CYCLE_ADJ },
	{ 0x11bd, 28, 27, 0 },

	{ 0x118e, 34, 34, 0 },				// DIVQ
	{ 0x119e, 36, 35, 0 },
	{ 0x11ae, 36, 36, 0 },
	{ 0x11be, 37, 36, 0 },

	{ 0x05, 6, 6, 0 },					// EIM
	{ 0x65, 7, 7, CYCLE_ADJ },
	{ 0x75, 7, 7, 0 },

	{ 0x88, 2, 2, 0 },					// EORA
	{ 0x98, 4, 3, 0 },
	{ 0xa8, 4, 4, CYCLE_ADJ },
	{ 0xb8, 5, 4, 0 },

	{ 0xc8, 2, 2, 0 },					// EORB
	{ 0xd8, 4, 3, 0 },
	{ 0xe8, 4, 4, CYCLE_ADJ },
	{ 0xf8, 5, 4, 0 },

	{ 0x1088, 5, 4, 0 },				// EORD
	{ 0x1098, 7, 5, 0 },
	{ 0x10a8, 7, 6, CYCLE_ADJ },
	{ 0x10b8, 8, 6, 0 },

	{ 0x1e, 8, 5, 0 },					// EXG

	{ 0x4c, 2, 1, 0 },					// INCA
	{ 0x5c, 2, 1, 0 },					// INCB
	{ 0x104c, 3, 2, 0 },				// INCD
	{ 0x114c, 3, 2, 0 },				// INCE
	{ 0x115c, 3, 2, 0 },				// INCF
	{ 0x105c, 3, 2, 0 },				// INCW

	{ 0x0c, 6, 5, 0 },					// INC
	{ 0x6c, 6, 6, CYCLE_ADJ },
	{ 0x7c, 7, 6, 0 },

	{ 0x0e, 3, 2, 0 },					// JMP
	{ 0x6e, 3, 3, CYCLE_ADJ },
	{ 0x7e, 4, 3, 0 },

	{ 0x9d, 7, 6, 0 },					// JSR
	{ 0xad, 7, 6, CYCLE_ADJ },
	{ 0xbd, 8, 7, 0 },

	{ 0x16, 5, 4, 0 },					// LBRA
	{ 0x17, 9, 7, 0 },					// LBSR
	{ 0x1021, 5, 5, 0 },				// LBRN
	{ 0x1022, 5, 5, 0 },				// remaining long branches are estimated on 6809 only:
	{ 0x1023, 5, 5, 0 },				//
	{ 0x1024, 5, 5, 0 },				// 6809: 5 cycles, +1 cycle if the branch is taken
	{ 0x1025, 5, 5, 0 },				// 6309 native: always 5 cycles
	{ 0x1026, 5, 5, 0 },				//
	{ 0x1027, 5, 5, 0 },				// this is handled as a special case elsewhere
	{ 0x1028, 5, 5, 0 },		
	{ 0x1029, 5, 5, 0 },		
	{ 0x102a, 5, 5, 0 },
	{ 0x102b, 5, 5, 0 },
	{ 0x102c, 5, 5, 0 },
	{ 0x102d, 5, 5, 0 },
	{ 0x102e, 5, 5, 0 },
	{ 0x102f, 5, 5, 0 },

	{ 0x86, 2, 2, 0 },					// LDA
	{ 0x96, 4, 3, 0 },
	{ 0xa6, 4, 4, CYCLE_ADJ },
	{ 0xb6, 5, 4, 0 },

	{ 0xc6, 2, 2, 0 },					// LDB
	{ 0xd6, 4, 3 },
	{ 0xe6, 4, 4, CYCLE_ADJ },
	{ 0xf6, 5, 4, 0 },

	{ 0x1136, 7, 6, 0 },				// LDBT

	{ 0xcc, 3, 3, 0 },					// LDD
	{ 0xdc, 5, 4, 0 },
	{ 0xec, 5, 5, CYCLE_ADJ },
	{ 0xfc, 6, 5, 0 },

	{ 0x1186, 3, 3, 0 },				// LDE
	{ 0x1196, 5, 4, 0 },
	{ 0x11a6, 5, 5, CYCLE_ADJ },
	{ 0x11b6, 6, 5, 0 },

	{ 0x11c6, 3, 3, 0 },				// LDF
	{ 0x11d6, 5, 4, 0 },
	{ 0x11e6, 5, 5, CYCLE_ADJ },
	{ 0x11f6, 6, 5, 0 },

	{ 0xcd, 5, 5, 0 },					// LDQ
	{ 0x10dc, 8, 7, 0 },
	{ 0x10ec, 8, 8, CYCLE_ADJ },
	{ 0x10fc, 9, 8, 0 },

	{ 0x10ce, 4, 4, 0 },				// LDS
	{ 0x10de, 6, 5, 0 },
	{ 0x10ee, 6, 6, CYCLE_ADJ },
	{ 0x10fe, 7, 6, 0 },

	{ 0xce, 3, 3, 0 },					// LDU
	{ 0xde, 5, 4, 0 },
	{ 0xee, 5, 5, CYCLE_ADJ },
	{ 0xfe, 6, 5, 0 },

	{ 0x1086, 4, 4, 0 },				// LDW
	{ 0x1096, 6, 5, 0 },
	{ 0x10a6, 6, 6, CYCLE_ADJ },
	{ 0x10b6, 7, 6, 0 },

	{ 0x8e, 3, 3, 0 },					// LDX
	{ 0x9e, 5, 4, 0 },
	{ 0xae, 5, 5, CYCLE_ADJ },
	{ 0xbe, 6, 5, 0 },

	{ 0x108e, 4, 4, 0 },				// LDY
	{ 0x109e, 6, 5, 0 },
	{ 0x10ae, 6, 6, CYCLE_ADJ },
	{ 0x10be, 7, 6, 0 },

	{ 0x113d, 5, 5, 0 },				// LDMD

	{ 0x30, 4, 4, CYCLE_ADJ },			// LEA
	{ 0x31, 4, 4, CYCLE_ADJ },
	{ 0x32, 4, 4, CYCLE_ADJ },
	{ 0x33, 4, 4, CYCLE_ADJ },

	{ 0x44, 2, 1, 0 },					// LSRA
	{ 0x54, 2, 1, 0 },					// LSRB
	{ 0x1044, 3, 2, 0 },				// LSRD
	{ 0x1054, 3, 2, 0 },				// LSRW

	{ 0x04, 6, 5, 0 },					// LSR
	{ 0x64, 6, 6, CYCLE_ADJ },
	{ 0x74, 7, 6, 0 },

	{ 0x3d, 11, 10, 0 },				// MUL

	{ 0x118f, 28, 28, 0 },				// MULD
	{ 0x119f, 30, 29, 0 },	
	{ 0x11af, 30, 30, CYCLE_ADJ },
	{ 0x11bf, 31, 30, 0 },

	{ 0x40, 2, 1, 0 },					// NEGA
	{ 0x50, 2, 1, 0 },					// NEGB
	{ 0x1040, 3, 2, 0 },				// NEGD

	{ 0x00, 6, 5, 0 },					// NEG
	{ 0x60, 6, 6, CYCLE_ADJ },
	{ 0x70, 7, 6, 0 },

	{ 0x12, 2, 1, 0 },					// NOP

	{ 0x01, 6, 6, 0 },					// OIM
	{ 0x61, 7, 7, CYCLE_ADJ },
	{ 0x71, 7, 7, 0 },

	{ 0x8a, 2, 2, 0 },					// ORA
	{ 0x9a, 4, 3, 0 },
	{ 0xaa, 4, 4, CYCLE_ADJ },
	{ 0xba, 5, 4, 0 },

	{ 0xca, 2, 2, 0 },					// ORB
	{ 0xda, 4, 3, 0 },
	{ 0xea, 4, 4, CYCLE_ADJ },
	{ 0xfa, 5, 4, 0 },

	{ 0x1a, 3, 2, 0 },					// ORCC

	{ 0x108a, 5, 4, 0 },				// ORD
	{ 0x109a, 7, 5, 0 },
	{ 0x10aa, 7, 6, CYCLE_ADJ },
	{ 0x10ba, 8, 6, 0 },

	{ 0x34, 5, 4, CYCLE_ADJ },			// PSHS
	{ 0x36, 5, 4, CYCLE_ADJ },			// PSHU
	{ 0x35, 5, 4, CYCLE_ADJ },			// PULS
	{ 0x37, 5, 4, CYCLE_ADJ },			// PULU
	{ 0x1038, 6, 6, 0 },				// PSHSW
	{ 0x103a, 6, 6, 0 },				// PSHUW
	{ 0x1039, 6, 6, 0 },				// PULSW
	{ 0x103b, 6, 6, 0 },				// PULUW

	{ 0x49, 2, 1, 0 },					// ROLA
	{ 0x59, 2, 1, 0 },					// ROLB
	{ 0x1049, 3, 2, 0 },				// ROLD
	{ 0x1059, 3, 2, 0 },				// ROLW

	{ 0x09, 6, 5, 0 },					// ROL
	{ 0x69, 6, 6, CYCLE_ADJ },
	{ 0x79, 7, 6, 0 },

	{ 0x46, 2, 1, 0 },					// RORA
	{ 0x56, 2, 1, 0 },					// RORB
	{ 0x1046, 3, 2, 0 },				// RORD
	{ 0x1056, 3, 2, 0 },				// RORW

	{ 0x06, 6, 5, 0 },					// ROR
	{ 0x66, 6, 6, CYCLE_ADJ },
	{ 0x76, 7, 6, 0 },

	{ 0x3b, 6, 17, CYCLE_ESTIMATED },	// RTI

	{ 0x39, 5, 4, 0 },					// RTS

	{ 0x82, 2, 2, 0 },					// SBCA
	{ 0x92, 4, 3, 0 },
	{ 0xa2, 4, 4, CYCLE_ADJ },
	{ 0xb2, 5, 4, 0 },

	{ 0xc2, 2, 2, 0 },					// SBCB
	{ 0xd2, 4, 3, 0 },
	{ 0xe2, 4, 4, CYCLE_ADJ },
	{ 0xf2, 5, 4, 0 },

	{ 0x1082, 5, 4, 0 },				// SBCD
	{ 0x1092, 7, 5, 0 },
	{ 0x10a2, 7, 6, CYCLE_ADJ },
	{ 0x10b2, 8, 6, 0 },

	{ 0x1d, 2, 1, 0 },					// SEX
	{ 0x14, 4, 4, 0 },					// SEXW

	{ 0x97, 4, 3, 0 },					// STA
	{ 0xa7, 4, 4, CYCLE_ADJ },
	{ 0xb7, 5, 4, 0 },

	{ 0xd7, 4, 3, 0 },					// STB
	{ 0xe7, 4, 4, CYCLE_ADJ },
	{ 0xf7, 5, 4, 0 },

	{ 0x1137, 8, 7, 0 },				// STBT

	{ 0xdd, 5, 4, 0 },					// STD
	{ 0xed, 5, 5, CYCLE_ADJ },
	{ 0xfd, 6, 5, 0 },

	{ 0x1197, 5, 4, 0 },				// STE
	{ 0x11a7, 5, 5, CYCLE_ADJ },
	{ 0x11b7, 6, 5, 0 },

	{ 0x11d7, 5, 4, 0 },				// STF
	{ 0x11e7, 5, 5, CYCLE_ADJ },
	{ 0x11f7, 6, 5, 0 },

	{ 0x10dd, 8, 7, 0 },				// STQ
	{ 0x10ed, 8, 8, CYCLE_ADJ },
	{ 0x10fd, 9, 8, 0 },

	{ 0x10df, 6, 5, 0 },				// STS
	{ 0x10ef, 6, 6, CYCLE_ADJ },
	{ 0x10ff, 7, 6, 0 },

	{ 0xdf, 5, 4, 0 },					// STU
	{ 0xef, 5, 5, CYCLE_ADJ },
	{ 0xff, 6, 5, 0 },

	{ 0x1097, 6, 5, 0 },				// STW
	{ 0x10a7, 6, 6, CYCLE_ADJ },
	{ 0x10b7, 7, 6, 0 },

	{ 0x9f, 5, 4, 0 },					// STX
	{ 0xaf, 5, 5, CYCLE_ADJ },
	{ 0xbf, 6, 5, 0 },

	{ 0x109f, 6, 5, 0 },				// STY
	{ 0x10af, 6, 6, CYCLE_ADJ },
	{ 0x10bf, 7, 6, 0 },

	{ 0x80, 2, 2, 0 },					// SUBA
	{ 0x90, 4, 3, 0 },
	{ 0xa0, 4, 4, CYCLE_ADJ },
	{ 0xb0, 5, 4, 0 },

	{ 0xc0, 2, 2, 0 },					// SUBB
	{ 0xd0, 4, 3, 0 },
	{ 0xe0, 4, 4, CYCLE_ADJ },
	{ 0xf0, 5, 4, 0 },

	{ 0x83, 4, 3, 0 },					// SUBD
	{ 0x93, 6, 4, 0 },
	{ 0xa3, 6, 5, CYCLE_ADJ },
	{ 0xb3, 7, 5, 0 },

	{ 0x1180, 3, 3, 0 },				// SUBE
	{ 0x1190, 5, 4, 0 },
	{ 0x11a0, 5, 5, CYCLE_ADJ },
	{ 0x11b0, 6, 5, 0 },

	{ 0x11c0, 3, 3, 0 },				// SUBF
	{ 0x11d0, 5, 4, 0 },
	{ 0x11e0, 5, 5, CYCLE_ADJ },
	{ 0x11f0, 6, 5, 0 },

	{ 0x1080, 5, 4, 0 },				// SUBW
	{ 0x1090, 7, 5, 0 },
	{ 0x10a0, 7, 6, CYCLE_ADJ },
	{ 0x10b0, 8, 6, 0 },

	{ 0x3f, 19, 21, 0 },				// SWI
	{ 0x103f, 20, 22, 0 },				// SWI2
	{ 0x113f, 20, 22, 0 },				// SWI3

	{ 0x13, 2, 1, CYCLE_ESTIMATED },	// SYNC

	{ 0x1f, 6, 4, 0 },					// TFR

	{ 0x0b, 6, 6, 0 },				// TIM
	{ 0x6b, 7, 7, CYCLE_ADJ },
	{ 0x7b, 7, 7, 0 },

	{ 0x1138, 6, 6, CYCLE_ESTIMATED },	// TFM
	{ 0x1139, 6, 6, CYCLE_ESTIMATED },	
	{ 0x113a, 6, 6, CYCLE_ESTIMATED },	
	{ 0x113b, 6, 6, CYCLE_ESTIMATED },	

	{ 0x4d, 2, 1, 0 },					// TSTA
	{ 0x5d, 2, 1, 0 },					// TSTB
	{ 0x104d, 3, 2, 0 },				// TSTD
	{ 0x114d, 3, 2, 0 },				// TSTE
	{ 0x115d, 3, 2, 0 },				// TSTF
	{ 0x105d, 3, 2, 0 },				// TSTW

	{ 0x0d, 6, 4, 0 },					// TST
	{ 0x6d, 6, 5, CYCLE_ADJ },
	{ 0x7d, 7, 5, 0 },

	{ -1, -1 }
};

typedef struct
{
	int cycles_6809_indexed;
	int cycles_6309_indexed;
	int cycles_6809_indirect;
	int cycles_6309_indirect;
} indtab_t;

static indtab_t indtab[] =
{
	{ 2, 1, -1, -1, },	// 0000		,R+   
	{ 3, 2, 6, 6, },	// 0001		,R++	[,R++]
	{ 2, 1, -1, -1, },	// 0010		,-R   
	{ 3, 2, 6, 6, },	// 0011		,--R	[,--R]
	{ 0, 0, 3, 3, },	// 0100		,R		[,R]
	{ 1, 1, 4, 4, },	// 0101		B,R		[B,R]
	{ 1, 1, 4, 4, },	// 0110		A,R		[A,R]
	{ 1, 1, 1, 1, },	// 0111		E,R		[E,R]
	{ 1, 1, 4, 4, },	// 1000		n,R		[n,R]
	{ 4, 3, 7, 7, },	// 1001		n,R		[n,R]  (16 bit)
	{ 1, 1, 1, 1, },	// 1010		F,R		[F,R] 
	{ 4, 2, 4, 4, },	// 1011		D,R		[D,R] 
	{ 1, 1, 4, 4, },	// 1100		n,PC	[n,PC]
	{ 5, 3, 8, 8, },	// 1101		n,PC	[n,PC] (16 bit)
	{ 4, 1, 4, 4, },	// 1110		W,R		[W,R]
	{ -1, -1, 5, 5, },	// 1111				[n]	   (16 bit)
};

/* calculates additional ticks from post byte in both indexed and indirect modes */
int lwasm_cycle_calc_ind(line_t *cl)
{
	int pb = cl->pb;

	if ((pb & 0x80) == 0) /* 5 bit offset */
		return 1;

	// These need special handling because the *register* bits determine the specific operation (and, thus, cycle counts)
	if (!CURPRAGMA(cl, PRAGMA_6809))
	{
		switch (pb)
		{
		case 0x8f:  // ,W
			return 0;
		case 0xaf:  // n,W (16 bit)
			return 2;
		case 0xcf:  // ,W++
		case 0xef:  // ,--W
			return 1;
		case 0x90:  // [,W]
			return 3;
		case 0xb0: // [n,W] (16 bit)
			return 5;
		case 0xd0: // [,W++]
		case 0xf0: // [,--W]
			return 4;
		}
	}

	if (pb & 0x10) /* indirect */
		return CURPRAGMA(cl, PRAGMA_6809) ? indtab[pb & 0xf].cycles_6809_indirect : indtab[pb & 0xf].cycles_6309_indirect;
	else
		return CURPRAGMA(cl, PRAGMA_6809) ? indtab[pb & 0xf].cycles_6809_indexed : indtab[pb & 0xf].cycles_6309_indexed;
}

/* calculate additional ticks from post byte in rlist (PSHS A,B,X...) */
int lwasm_cycle_calc_rlist(line_t *cl)
{
	int i, cycles = 0;

	for (i = 0; i < 8; i++)
	{
		// 1 cycle for 8 bit regs CC-DP (bits 0-3)
		// otherwise 2
		if (cl->pb & 1 << i)
			cycles += (i <= 3) ? 1 : 2;
	}

	return cycles;
}

void lwasm_cycle_update_count(line_t *cl, int opc)
{
	int i;
	for (i = 0; 1; i++)
	{
		if (cycletable[i].opc == -1) return;

		if (cycletable[i].opc == opc)
		{
			cl->cycle_base = CURPRAGMA(cl, PRAGMA_6809) ? cycletable[i].cycles_6809 : cycletable[i].cycles_6309;
			cl->cycle_flags = cycletable[i].flags;
			cl->cycle_adj = 0;

			// long branches are estimated on 6809
			if (CURPRAGMA(cl, PRAGMA_6809) && (opc >= 0x1022 && opc <= 0x102f))
				cl->cycle_flags |= CYCLE_ESTIMATED;

			return;
		}
	}
}