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view lwasm/cycle.c @ 540:98d68c27f610
Added tag lwtools-4.20 for changeset 0b0f4d5339f9
author | William Astle <lost@l-w.ca> |
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date | Wed, 17 Aug 2022 16:50:53 -0600 |
parents | e545196bf14f |
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/* 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; } } }