view lwasm/cycle.c @ 577:e49d24f4a9a5

Correct bug in the object file output code leading to stack corruption It turns out leaving a pointer to a stack allocated temporary in a persistent data structure is not conducive to correct program operation. Undo the export check setup in the object file output sequence so a pointer to stack allocated memory is not left hanging when the function returns. This seems to correct at least one mysterious crash bug, and possibly others. Thanks to Boisy Pitre for reporting the crash bug that led to this discovery, as well as a previous crash bug that likely has the same root cause. Additional thanks to Ciaran Anscomb whose debugger wielding wizardry revealed the exact location of this particular bit of unbrilliance.
author William Astle <lost@l-w.ca>
date Sat, 03 Aug 2024 14:30:06 -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;
		}
	}
}