diff options
Diffstat (limited to 'sim/w65/gencode.c')
| -rw-r--r-- | sim/w65/gencode.c | 991 |
1 files changed, 991 insertions, 0 deletions
diff --git a/sim/w65/gencode.c b/sim/w65/gencode.c new file mode 100644 index 00000000000..cbbeb5b535b --- /dev/null +++ b/sim/w65/gencode.c @@ -0,0 +1,991 @@ +/* Program to write out opcode tables for the W65816 and friends + Copyright (C) 1995 Free Software Foundation, Inc. + Written by Steve Chamberlain sac@cygnus.com + + +GDB 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 2, or (at your option) +any later version. + +GDB 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, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + + +#include <stdio.h> + + +struct opinfo + { + int code; + char *opcode; + char *mode; + int clocks; + int cpu; + struct ainfo *ai; + struct oinfo *oi; + }; + +#define W16_ONLY 1 +#define C02_ONLY 2 + +struct ainfo + { + char *name; + char *enumname; + char *disasmstring; + char *sizer; + char *reloc0; + char *howlval; + + /* If addr val could be reg addr - used for disasssmbly of + args into reg names - you want lda <0x10 to turn into lda <r0 + but you don't want lda #0x10 to do the same. */ + char regflag; + }; + +#define GET_M 1 +#define SPECIAL_CASE 2 +#define COP_GET 3 +#define G2_GET 4 +#define BRANCH 5 +#define GET_X 6 +#define STANDARD_PC_GET 7 +#define PUSH_16 8 +#define PUSH_8 9 +#define PUSH_X 10 +#define PUSH_M 11 +#define POP_16 12 +#define POP_8 13 +#define POP_X 14 +#define POP_M 15 +#define STORE_M 16 +#define STORE_X 17 +struct oinfo + { + char *name; + int howsrc; + char *howto; + }; +struct oinfo olist[] = +{ + {"adc", GET_M, "{ int old_acc = GET_A; int old_src =src; src = old_src + old_acc + GET_CBIT; SET_NBIT_M(src); SET_VBIT_M(old_src, old_acc, src); SET_CBIT_M(src); SET_ZBIT_M(src); SET_A(src);}"}, + {"and", GET_M, "src = GET_A & src; SET_NBIT_M(src); SET_ZBIT_M(src);SET_A(src);"}, + {"asl", G2_GET, " src <<=1; SET_CBIT_M(src); SET_ZBIT_M(src);SET_NBIT_M(src);"}, + {"bcc", BRANCH, "GET_CBIT==0"}, + {"bcs", BRANCH, "GET_CBIT==1"}, + {"beq", BRANCH, "GET_ZBIT==1"}, + {"bit", GET_M, "SET_NBIT_M(src); SET_VBIT((src >> (GET_MBIT ? 6:14 ) &1)); SET_ZBIT_M (GET_A & src);"}, + {"bmi", BRANCH, "GET_NBIT==1"}, + {"bne", BRANCH, "GET_ZBIT==0"}, + {"bpl", BRANCH, "GET_NBIT==0"}, + {"bra", BRANCH, "1"}, + {"brk", SPECIAL_CASE, + "\ +{\ + if (GET_E == 1) \ + { PUSH16(GET_PC + 1); PUSH8 (GET_P | BFLAG); SET_P (GET_P | IFLAG); SET_ONLY_PC(fetch16 (0xfffe));}\ + else \ + { PUSH8 (GET_PBR_LOW); PUSH16 (GET_PC); PUSH8(GET_P); SET_P(GET_P |IFLAG); SET_PBRPC(fetch16 (0xffe6));};\ + }"}, + {"brl", BRANCH, "1"}, + {"bvc", BRANCH, "GET_VBIT==0"}, + {"bvs", BRANCH, "GET_VBIT==1"}, + {"clc", SPECIAL_CASE, "SET_CBIT(0);"}, + {"cld", SPECIAL_CASE, "SET_DBIT(0);"}, + {"cli", SPECIAL_CASE, "SET_IBIT(0);"}, + {"clv", SPECIAL_CASE, "SET_VBIT(0);"}, + {"cmp", GET_M, "src = GET_A - src; SET_ZBIT_M(src); SET_CBIT_M(~src); SET_NBIT_M(src);"}, + {"cop", COP_GET, + "\ +{\ + if (GET_E == 1) \ + { PUSH16(GET_PC + 1); PUSH8 (GET_P | BFLAG); SET_P ((GET_P | IFLAG) & ~DFLAG); SET_ONLY_PC(fetch16 (0xfff4));}\ + else \ + { PUSH8 (GET_PBR_LOW); PUSH16 (GET_PC); PUSH8(GET_P); SET_P((GET_P |IFLAG) & ~DFLAG); SET_PBRPC(fetch16 (0xffe4));};\ + }"}, + {"cpx", GET_X, "src = GET_X - src; SET_NBIT_X(src); SET_ZBIT_X(src); SET_CBIT_X(~src);"}, + {"cpy", GET_X, "src = GET_Y - src; SET_NBIT_X(src); SET_ZBIT_X(src); SET_CBIT_X(~src);"}, + {"dec", G2_GET, "src --; SET_NBIT_M(src); SET_ZBIT_M(src); "}, + {"dex", SPECIAL_CASE, "SET_X(GET_X -1); SET_NBIT_X(GET_X); SET_ZBIT_X(GET_X);"}, + {"dey", SPECIAL_CASE, "SET_Y(GET_Y -1); SET_NBIT_X(GET_Y); SET_ZBIT_X(GET_Y);"}, + {"eor", GET_M, "src = GET_A ^ src; SET_NBIT_M(src); SET_ZBIT_M(src);SET_A(src); "}, + {"inc", G2_GET, "src ++; SET_NBIT_M(src); SET_ZBIT_M(src); "}, + {"inx", SPECIAL_CASE, "SET_X(GET_X +1); SET_NBIT_X(GET_X); SET_ZBIT_X(GET_X);"}, + {"iny", SPECIAL_CASE, "SET_Y(GET_Y +1); SET_NBIT_X(GET_Y); SET_ZBIT_X(GET_Y);"}, + {"jmp", STANDARD_PC_GET, "SET_ONLY_PC(lval);"}, + {"jsr", STANDARD_PC_GET, "if (l) { PUSH8(GET_PBR_LOW);} PUSH16(GET_PC); SET_ONLY_PC(lval);\n"}, + {"lda", GET_M, "SET_A(src); SET_NBIT_M(GET_A); SET_ZBIT_M(GET_A);"}, + {"ldx", GET_X, "SET_X(src);SET_NBIT_X(GET_X); SET_ZBIT_X(GET_X);"}, + {"ldy", GET_X, "SET_Y(src);SET_NBIT_X(GET_Y); SET_ZBIT_X(GET_Y);"}, + {"lsr", G2_GET, + "SET_CBIT(src & 1); \ + SET_NBIT(0); \ + src = src >> 1; \ + SET_ZBIT_M(src);"}, + {"mvn", SPECIAL_CASE, + "{ int dst_bank; int src_bank; dst_bank = fetch8 ( GET_PC)<<16; INC_PC(1); src_bank = fetch8 (GET_PC)<<16; INC_PC(1);\ + do { store8 ( dst_bank + GET_X, fetch8 (src_bank + GET_Y)); SET_X(GET_X+1); SET_Y(GET_Y+1); SET_A((GET_A-1) & 0xffff); } while (GET_A != 0xffff);}"}, + {"mvp", SPECIAL_CASE, + "{ int dst_bank; int src_bank; dst_bank = fetch8 ( GET_PBRPC)<<16; INC_PC(1); src_bank = fetch8 (GET_PBRPC)<<16; INC_PC(1);\ + do { store8 ( dst_bank + GET_X, fetch8 (src_bank + GET_Y)); SET_X(GET_X-1); SET_Y(GET_Y-1); SET_A((GET_A-1) & 0xffff); } while (GET_A != 0xffff);}"}, + + {"nop", SPECIAL_CASE, ""}, +{"ora", GET_M, "SET_A(GET_A | src); SET_NBIT_M(GET_A); SET_ZBIT_M(GET_A);"}, + {"pea", PUSH_16, "src = fetch16(GET_PBRPC); INC_PC(2);"}, + {"pei", PUSH_16, "src = fetch16(fetch8(GET_PBRPC) + GET_D); INC_PC(1);"}, + {"per", PUSH_16, "src = fetch16(GET_PBRPC) + GET_PC+2; INC_PC(2);"}, + {"pha", PUSH_M, "src = GET_A;"}, + {"phb", PUSH_8, "src = GET_DBR_LOW;"}, + {"phd", PUSH_16, "src = GET_DPR;"}, + {"phk", PUSH_8, "src = GET_PBR_LOW;"}, + {"php", PUSH_8, "src = GET_P;"}, + {"phx", PUSH_X, "src = GET_X;"}, + {"phy", PUSH_X, "src = GET_Y;"}, + {"pla", POP_M, "SET_A( src); SET_NBIT_M(GET_A);SET_ZBIT_M(GET_A);"}, + {"plb", POP_8, "SET_DBR_LOW(src);SET_NBIT_8(src); SET_ZBIT_8(src);"}, + {"pld", POP_16, "SET_DPR(src);SET_NBIT_16(src); SET_ZBIT_16(src);"}, + {"plp", POP_8, "SET_P(src); RETHINK;"}, + {"plx", POP_X, "SET_X(src);SET_NBIT_X(src);SET_ZBIT_X(src);"}, + {"ply", POP_X, "SET_Y(src);SET_NBIT_X(src);SET_ZBIT_X(src);"}, + {"rep", COP_GET, "SET_P(GET_P & ~src); RETHINK;"}, + {"rol", G2_GET, "src = (src << 1) | GET_CBIT; SET_CBIT((src >> (GET_MBIT ? 7 : 15)) &1); SET_ZBIT_M(src);"}, + {"ror", G2_GET, "{ int t = src; src = (src>>1) | (GET_CBIT<<((GET_MBIT ? 8:16)-1));SET_NBIT_M(src);SET_ZBIT_M(src); SET_CBIT(t&1);}"}, + {"rti", SPECIAL_CASE, "{ int t; POP16(t); SET_ONLY_PC(t); if (GET_E==0) { POP8(t); SET_PBR(t);} POP8(t);SET_P(t);}"}, + {"rtl", SPECIAL_CASE, "{ int t; POP24(t); SET_PBRPC(t);}"}, + {"rts", SPECIAL_CASE, "{ int t; POP16(t); SET_ONLY_PC(t);}"}, + {"sbc", GET_M, + "{ int old_acc = GET_A & AMASK; int old_src = src & AMASK; src = old_acc - old_src - !GET_CBIT; SET_A(src);\ + SET_CBIT(!(src>>(GET_MBIT?8:16) &1)); SET_VBIT_M(old_src,old_acc, src); SET_ZBIT_M(src); SET_NBIT_M(src);}"}, + {"sec", SPECIAL_CASE, "SET_CBIT(1);"}, + {"sed", SPECIAL_CASE, "SET_DBIT(1);"}, + {"sei", SPECIAL_CASE, "SET_IBIT(1);"}, + {"sep", COP_GET, "SET_P(GET_P | src);RETHINK;"}, + {"sta", STORE_M, "src = GET_A;"}, + {"stp", SPECIAL_CASE, "abort();"}, + {"stx", STORE_X, "src = GET_X;"}, + {"sty", STORE_X, "src = GET_Y;"}, + {"stz", STORE_M, "src = 0;"}, +{"tax", SPECIAL_CASE, "SET_X(GET_A); SET_NBIT_X(GET_A);SET_ZBIT_X(GET_A);"}, +{"tay", SPECIAL_CASE, "SET_Y(GET_A); SET_NBIT_X(GET_A);SET_ZBIT_X(GET_A);"}, + {"tcd", SPECIAL_CASE, "SET_DPR(GET_A); SET_NBIT_X(GET_A); SET_ZBIT_X(GET_A);"}, + {"tcs", SPECIAL_CASE, "SET_S(GET_A);"}, + {"tdc", SPECIAL_CASE, "SET_A(GET_DPR); SET_NBIT_M(GET_A); SET_ZBIT_M(GET_A);"}, + {"trb", G2_GET, "SET_ZBIT_M(src & GET_A); src = src & ~GET_A; "}, + {"tsb", G2_GET, "SET_ZBIT_M(src & GET_A); src = src | GET_A;"}, +{"tsc", SPECIAL_CASE, "SET_A(GET_S); SET_NBIT_16(GET_A); SET_ZBIT_16(GET_A);"}, +{"tsx", SPECIAL_CASE, "SET_X(GET_S); SET_NBIT_X(GET_X); SET_ZBIT_X(GET_X);"}, +{"txa", SPECIAL_CASE, "SET_A(GET_X); SET_NBIT_M(GET_A); SET_ZBIT_M(GET_A);"}, + {"txs", SPECIAL_CASE, "SET_S(GET_X);"}, +{"txy", SPECIAL_CASE, "SET_Y(GET_X); SET_NBIT_X(GET_Y); SET_ZBIT_X(GET_Y);"}, +{"tya", SPECIAL_CASE, "SET_A(GET_Y); SET_NBIT_M(GET_A); SET_ZBIT_M(GET_A);"}, +{"tyx", SPECIAL_CASE, "SET_X(GET_Y); SET_NBIT_X(GET_X); SET_ZBIT_X(GET_X);"}, + {"wai", SPECIAL_CASE, "wai();INC_PC(-1);"}, + {"wdm", SPECIAL_CASE, "SET_A(wdm(GET_A, GET_X));"}, + {"xba", SPECIAL_CASE, + "if (GET_XBIT==0) { SET_A(((GET_A >> 8) & 0xff) | ((GET_A & 0xff)<<8));} else { int t = GET_A; SET_A(GET_B); SET_B(t);}; SET_NBIT_8(GET_A); SET_ZBIT_8(GET_A);"}, + {"xce", SPECIAL_CASE, "{ int t = GET_E; SET_E(GET_CBIT); SET_CBIT(GET_E);if (GET_E) { SET_MBIT(1); SET_XBIT(1);}}; goto top;"}, + 0}; + +struct ainfo alist[] = +{ + {"#a", "IMMTOA", "#$0", "M==0 ? 2:1", "M==0 ? %sR_W65_ABS16 : %sR_W65_ABS8", "lval = GET_PBRPC; INC_PC(GET_MBIT ? 1:2); ", 0}, + {"#c", "IMMCOP", "#$0", "1", "%sR_W65_ABS8", "lval = GET_PBRPC; INC_PC(1); ", 0}, + {"#i", "IMMTOI", "#$0", "X==0 ? 2:1", "X==0 ? %sR_W65_ABS16 : %sR_W65_ABS8", "lval = GET_PBRPC; INC_PC(GET_XBIT ? 1:2);", 0}, + {"A", "ACC", "a", "0", 0, "*FAIL**", 0}, + {"r", "PC_REL", "$0", "1", "%sR_W65_PCR8", "lval = GET_PBR_HIGH + (0xffff &(fetch8sext(GET_PBRPC) + GET_PC + 1)); INC_PC(1);", 0}, + {"rl", "PC_REL_LONG", "$0", "2", "%sR_W65_PCR16", "lval = GET_PBR_HIGH + (0xffff & (fetch16 (GET_PBRPC) + GET_PC + 2)); INC_PC(2);", 0}, + {"i", "IMPLIED", "", "0", "", 0}, + {"s", "STACK", "", "0", "", 0}, + {"d", "DIR", "<$0", "1", "%sR_W65_ABS8", "lval = fetch8(GET_PBRPC) + GET_D; INC_PC(1);", 1}, + {"d,x", "DIR_IDX_X", "<$0,x", "1", "%sR_W65_ABS8", "lval = fetch8(GET_PBRPC) + GET_X+ GET_D; INC_PC(1);", 1}, + {"d,y", "DIR_IDX_Y", "<$0,y", "1", "%sR_W65_ABS8", "lval = fetch8(GET_PBRPC) + GET_Y + GET_D; INC_PC(1);", 1}, + {"(d)", "DIR_IND", "(<$0)", "1", "%sR_W65_ABS8", "lval = GET_DBR_HIGH + (0xffff & fetch16(fetch8(GET_PBRPC) + GET_D));INC_PC(1);",1}, + {"(d,x)", "DIR_IDX_IND_X", "(<$0,x)", "1", "%sR_W65_ABS8", "lval = GET_DBR_HIGH + (0xffff & (fetch8 (GET_PBRPC) + GET_D + GET_X)) ; INC_PC(1);",1}, + {"(d),y", "DIR_IND_IDX_Y", "(<$0),y", "1", "%sR_W65_ABS8", "lval = fetch16(fetch8(GET_PBRPC) + GET_D) + GET_Y + GET_DBR_HIGH;INC_PC(1);",1}, + {"[d]", "DIR_IND_LONG", "[$0]", "1", "%sR_W65_ABS8", "lval = fetch24(GET_D + fetch8(GET_PBRPC));INC_PC(1);",1}, + + {"[d],y", "DIR_IND_IDX_Y_LONG", "[$0],y", "1", "%sR_W65_ABS8", "lval = fetch24(fetch8(GET_PBRPC) + GET_D) + GET_Y;INC_PC(1);",1}, + + {"a", "ABS", "!$0", "2", "%sR_W65_ABS16", "lval = fetch16(GET_PBRPC) + GET_DBR_HIGH; INC_PC(2) ; ",1}, + {"a,x", "ABS_IDX_X", "!$0,x", "2", "%sR_W65_ABS16", "lval = fetch16(GET_PBRPC) + GET_DBR_HIGH + GET_X; INC_PC(2); ",1}, + {"a,y", "ABS_IDX_Y", "!$0,y", "2", "%sR_W65_ABS16", "lval = fetch16(GET_PBRPC) + GET_DBR_HIGH + GET_Y; INC_PC(2); ", 1}, + {"al", "ABS_LONG", ">$0", "3", "%sR_W65_ABS24", "lval = fetch24(GET_PBRPC); INC_PC(3);\nl=1;\n", 1}, + {"[a]", "ABS_IND_LONG", "[>$0]", "2", "%sR_W65_ABS16", "lval = fetch24(fetch16(GET_PBRPC)); INC_PC(2);", 1}, + {"al,x", "ABS_LONG_IDX_X", ">$0,x", "3", "%sR_W65_ABS24", "lval = fetch24(GET_PBRPC) + GET_X; INC_PC(3);", 1}, + {"d,s", "STACK_REL", "$0,s", "1", "%sR_W65_ABS8", "lval = fetch8(GET_PBRPC) + GET_S; INC_PC(1);", 0}, + {"(d,s),y", "STACK_REL_INDX_IDX", "($0,s),y", "1", "%sR_W65_ABS8", "lval = fetch16(fetch8(GET_PBRPC) + GET_S) + GET_DBR_HIGH + GET_Y;INC_PC(1);",0}, + {"(a)", "ABS_IND", "($0)", "2", "%sR_W65_ABS16", "lval = fetch16(GET_PBRPC) + GET_DBR_HIGH; INC_PC(2);", 1}, + {"(a,x)", "ABS_IND_IDX", "($0,x)", "2", "%sR_W65_ABS16", + "lval = fetch16((0xffff & (fetch16(GET_PBRPC) + GET_X )) + GET_PBR_HIGH) + GET_PBR_HIGH;INC_PC(2);",1}, + {"xyz", "BLOCK_MOVE", "", "2", "", 0}, + 0}; + + +struct opinfo optable[257] = +{ + {0x00, "brk", "s"}, + {0x01, "ora", "(d,x)"}, + {0x02, "cop", "#c"}, + {0x03, "ora", "d,s"}, + {0x04, "tsb", "d"}, + {0x05, "ora", "d"}, + {0x06, "asl", "d"}, + {0x07, "ora", "[d]"}, + {0x08, "php", "s"}, + {0x09, "ora", "#a"}, + {0x0a, "asl", "A"}, + {0x0b, "phd", "s"}, + {0x0c, "tsb", "a"}, + {0x0d, "ora", "a"}, + {0x0e, "asl", "a"}, + {0x0f, "ora", "al"}, + {0x10, "bpl", "r"}, + {0x11, "ora", "(d),y"}, + {0x12, "ora", "(d)"}, + {0x13, "ora", "(d,s),y"}, + {0x14, "trb", "d"}, + {0x15, "ora", "d,x"}, + {0x16, "asl", "d,x"}, + {0x17, "ora", "[d],y"}, + {0x18, "clc", "i"}, + {0x19, "ora", "a,y"}, + {0x1a, "inc", "A"}, + {0x1b, "tcs", "i"}, + {0x1c, "trb", "a"}, + {0x1d, "ora", "a,x"}, + {0x1e, "asl", "a,x"}, + {0x1f, "ora", "al,x"}, + {0x20, "jsr", "a"}, + {0x21, "and", "(d,x)"}, + {0x22, "jsr", "al"}, + {0x23, "and", "d,s"}, + {0x24, "bit", "(d)"}, + {0x25, "and", "d"}, + {0x26, "rol", "d"}, + {0x27, "and", "[d]"}, + {0x28, "plp", "s"}, + {0x29, "and", "#a"}, + {0x2a, "rol", "A"}, + {0x2b, "pld", "s"}, + {0x2c, "bit", "a"}, + {0x2d, "and", "a"}, + {0x2e, "rol", "a"}, + {0x2f, "and", "al"}, + {0x30, "bmi", "r"}, + {0x31, "and", "(d),y"}, + {0x32, "and", "(d)"}, + {0x33, "and", "(d,s),y"}, + {0x34, "bit", "(d,x)"}, + {0x35, "and", "d,x"}, + {0x36, "rol", "d,x"}, + {0x37, "and", "[d],y"}, + {0x38, "sec", "i"}, + {0x39, "and", "a,y"}, + {0x3a, "dec", "A"}, + {0x3b, "tsc", "i"}, + {0x3c, "bit", "a,x"}, + {0x3d, "and", "a,x"}, + {0x3e, "rol", "a,x"}, + {0x3f, "and", "al,x"}, + {0x40, "rti", "s"}, + {0x41, "eor", "(d,x)"}, + {0x42, "wdm", "i"}, + {0x43, "eor", "d,s"}, + {0x44, "mvp", "xyz"}, + {0x45, "eor", "d"}, + {0x46, "lsr", "d"}, + {0x47, "eor", "[d]"}, + {0x48, "pha", "s"}, + {0x49, "eor", "#a"}, + {0x4a, "lsr", "A"}, + {0x4b, "phk", "s"}, + {0x4c, "jmp", "a"}, + {0x4d, "eor", "a"}, + {0x4e, "lsr", "a"}, + {0x4f, "eor", "al"}, + {0x50, "bvc", "r"}, + {0x51, "eor", "(d),y"}, + {0x52, "eor", "(d)"}, + {0x53, "eor", "(d,s),y"}, + {0x54, "mvn", "xyz"}, + {0x55, "eor", "d,x"}, + {0x56, "lsr", "d,x"}, + {0x57, "eor", "[d],y"}, + {0x58, "cli", "i"}, + {0x59, "eor", "a,y"}, + {0x5a, "phy", "s"}, + {0x5b, "tcd", "i"}, + {0x5c, "jmp", "al"}, + {0x5d, "eor", "a,x"}, + {0x5e, "lsr", "a,x"}, + {0x5f, "eor", "al,x"}, + {0x60, "rts", "s"}, + {0x61, "adc", "(d,x)"}, + {0x62, "per", "rl"}, + {0x63, "adc", "d,s"}, + {0x64, "stz", "d"}, + {0x65, "adc", "d"}, + {0x66, "ror", "d"}, + {0x67, "adc", "[d]"}, + {0x68, "pla", "s"}, + {0x69, "adc", "#a"}, + {0x6a, "ror", "A"}, + {0x6b, "rtl", "s"}, + {0x6c, "jmp", "(a)"}, + {0x6d, "adc", "a"}, + {0x6e, "ror", "a"}, + {0x6f, "adc", "al"}, + {0x70, "bvs", "r"}, + {0x71, "adc", "(d),y"}, + {0x72, "adc", "(d)"}, + {0x73, "adc", "(d,s),y"}, + {0x74, "stz", "d,x"}, + {0x75, "adc", "d,x"}, + {0x76, "ror", "d,x"}, + {0x77, "adc", "[d],y"}, + {0x78, "sei", "i"}, + {0x79, "adc", "a,y"}, + {0x7a, "ply", "s"}, + {0x7b, "tdc", "i"}, + {0x7c, "jmp", "(a,x)"}, + {0x7d, "adc", "a,x"}, + {0x7e, "ror", "a,x"}, + {0x7f, "adc", "al,x"}, + {0x80, "bra", "r"}, + {0x81, "sta", "(d,x)"}, + {0x82, "brl", "rl"}, + {0x83, "sta", "d,s"}, + {0x84, "sty", "d"}, + {0x85, "sta", "d"}, + {0x86, "stx", "d"}, + {0x87, "sta", "[d]"}, + {0x88, "dey", "i"}, + {0x89, "bit", "#a"}, + {0x8a, "txa", "i"}, + {0x8b, "phb", "s"}, + {0x8c, "sty", "a"}, + {0x8d, "sta", "a"}, + {0x8e, "stx", "a"}, + {0x8f, "sta", "al"}, + {0x90, "bcc", "r"}, + {0x91, "sta", "(d),y"}, + {0x92, "sta", "(d)"}, + {0x93, "sta", "(d,s),y"}, + {0x94, "sty", "d,x"}, + {0x95, "sta", "d,x"}, + {0x96, "stx", "d,x"}, + {0x97, "sta", "[d],y"}, + {0x98, "tya", "i"}, + {0x99, "sta", "a,y"}, + {0x9a, "txs", "i"}, + {0x9b, "txy", "i"}, + {0x9c, "stz", "a"}, + {0x9d, "sta", "a,x"}, + {0x9e, "stz", "a,x"}, + {0x9f, "sta", "al,x"}, + {0xa0, "ldy", "#i"}, + {0xa1, "lda", "(d,x)"}, + {0xa2, "ldx", "#i"}, + {0xa3, "lda", "d,s"}, + {0xa4, "ldy", "d"}, + {0xa5, "lda", "d"}, + {0xa6, "ldx", "d"}, + {0xa7, "lda", "[d]"}, + {0xa8, "tay", "i"}, + {0xa9, "lda", "#a"}, + {0xaa, "tax", "i"}, + {0xab, "plb", "s"}, + {0xac, "ldy", "a"}, + {0xad, "lda", "a"}, + {0xae, "ldx", "a"}, + {0xaf, "lda", "al"}, + {0xb0, "bcs", "r"}, + {0xb1, "lda", "(d),y"}, + {0xb2, "lda", "(d)"}, + {0xb3, "lda", "(d,s),y"}, + {0xb4, "ldy", "d,x"}, + {0xb5, "lda", "d,x"}, + {0xb6, "ldx", "d,y"}, + {0xb7, "lda", "[d],y"}, + {0xb8, "clv", "i"}, + {0xb9, "lda", "a,y"}, + {0xba, "tsx", "i"}, + {0xbb, "tyx", "i"}, + {0xbc, "ldy", "a,x"}, + {0xbd, "lda", "a,x"}, + {0xbe, "ldx", "a,y"}, + {0xbf, "lda", "al,x"}, + {0xc0, "cpy", "#i"}, + {0xc1, "cmp", "(d,x)"}, + {0xc2, "rep", "#c"}, + {0xc3, "cmp", "d,s"}, + {0xc4, "cpy", "d"}, + {0xc5, "cmp", "d"}, + {0xc6, "dec", "d"}, + {0xc7, "cmp", "[d]"}, + {0xc8, "iny", "i"}, + {0xc9, "cmp", "#a"}, + {0xca, "dex", "i"}, + {0xcb, "wai", "i"}, + {0xcc, "cpy", "a"}, + {0xcd, "cmp", "a"}, + {0xce, "dec", "a"}, + {0xcf, "cmp", "al"}, + {0xd0, "bne", "r"}, + {0xd1, "cmp", "(d),y"}, + {0xd2, "cmp", "(d)"}, + {0xd3, "cmp", "(d,s),y"}, + {0xd4, "pei", "d"}, + {0xd5, "cmp", "d,x"}, + {0xd6, "dec", "d,x"}, + {0xd7, "cmp", "[d],y"}, + {0xd8, "cld", "i"}, + {0xd9, "cmp", "a,y"}, + {0xda, "phx", "s"}, + {0xdb, "stp", "i"}, + {0xdc, "jmp", "[a]"}, + {0xdd, "cmp", "a,x"}, + {0xde, "dec", "a,x"}, + {0xdf, "cmp", "al,x"}, + {0xe0, "cpx", "#i"}, + {0xe1, "sbc", "(d,x)"}, + {0xe2, "sep", "#c"}, + {0xe3, "sbc", "d,s"}, + {0xe4, "cpx", "d"}, + {0xe5, "sbc", "d"}, + {0xe6, "inc", "d"}, + {0xe7, "sbc", "[d]"}, + {0xe8, "inx", "i"}, + {0xe9, "sbc", "#a"}, + {0xea, "nop", "i"}, + {0xeb, "xba", "i"}, + {0xec, "cpx", "a"}, + {0xed, "sbc", "a"}, + {0xee, "inc", "a"}, + {0xef, "sbc", "al"}, + {0xf0, "beq", "r"}, + {0xf1, "sbc", "(d),y"}, + {0xf2, "sbc", "(d)"}, + {0xf3, "sbc", "(d,s),y"}, + {0xf4, "pea", "a"}, + {0xf5, "sbc", "d,x"}, + {0xf6, "inc", "d,x"}, + {0xf7, "sbc", "[d],y"}, + {0xf8, "sed", "i"}, + {0xf9, "sbc", "a,y"}, + {0xfa, "plx", "s"}, + {0xfb, "xce", "i"}, + {0xfc, "jsr", "(a,x)"}, + {0xfd, "sbc", "a,x"}, + {0xfe, "inc", "a,x"}, + {0xff, "sbc", "al,x"}, + 0}; + + +int pfunc(a,b) +struct opinfo *a; +struct opinfo *b; +{ +return strcmp(a->mode, b->mode); + +} +static void +dump_table () +{ + int x; + int y; + printf (" |"); + for (x = 0; x < 16; x++) + { + printf (" %x |", x); + } + printf ("\n"); + printf (" |"); + for (x = 0; x < 16; x++) + { + printf ("-------|"); + } + printf ("\n"); + + for (y = 0; y < 16; y++) + { + printf ("%x |", y); + for (x = 0; x < 16; x++) + { + struct opinfo *p = &optable[y * 16 + x]; + if (p->opcode) + { + printf ("%-7s", p->opcode); + } + else + { + printf ("*******"); + } + printf ("|"); + } + printf ("\n"); + printf (" |"); + + for (x = 0; x < 16; x++) + { + struct opinfo *p = &optable[y * 16 + x]; + if (p->mode) + { + printf ("%-7s", p->mode); + } + else + { + printf ("*******"); + } + printf ("|"); + } + printf ("\n"); + printf (" |"); + for (x = 0; x < 16; x++) + { + printf ("-------|"); + } + + + printf ("\n"); + } +} + +dt () +{ +#if 0 + int i; + for (i = 0; i < 256; i++) + { + struct opinfo *p = &optable[i]; + printf ("/* %02x */ ", i); + if (p->opcode) + printf ("{\"%s\",\"%s\",%d,%d},", p->opcode->name, p->addr->name); + + printf ("\n"); + } +#endif + +} +static +void +init_table () +{ + int i; + for (i = 0; i < 256; i++) + { + struct opinfo *p = optable + i; + struct ainfo *a; + struct oinfo *o; + for (a = alist; a->name; a++) + { + if (strcmp (a->name, p->mode) == 0) + { + p->ai = a; + goto done; + } + } + printf ("bad %x\n", i); + done:; + for (o = olist; o->name; o++) + { + if (strcmp (o->name, p->opcode) == 0) + { + p->oi = o; + goto doneo; + } + } + printf ("bad %x\n", i); + doneo:; + + } +} + +/* Dump the opcodes sorted by name */ +static +void +assembler_table (as) +{ + int i; + struct oinfo *o; + struct ainfo *a; + int n = 0; + /* Step through the sorted list of opnames */ + printf (" /* WDC 65816 Assembler opcode table */\n"); + printf (" /* (generated by the program sim/w65/gencode -a) */\n"); + + for (a = alist; a->name; a++) + { + printf ("#define ADDR_%-20s%d\t /* %-7s */\n", a->enumname, ++n, a->name); + } + + printf ("struct opinfo {\n\tint val;\n\tint code;\n\tchar *name;\n\tint amode;\n};\n"); + + printf ("struct opinfo optable[257]={\n"); + if (as) + { + i = 1; + for (o = olist; o->name; o++) + { + printf ("#define O_%s %d\n", o->name, i++); + } + + qsort (optable, 256, sizeof (struct opinfo), pfunc); + + printf ("#ifdef DEFINE_TABLE\n"); + for (o = olist; o->name; o++) + { + + for (i = 0; i < 256; i++) + { + struct opinfo *p = optable + i; + + if (p->oi == o) + { + /* This opcode is of the right name */ + printf ("\t{0x%02X,\tO_%s,\t\"%s\",\tADDR_%s},\n", p->code, p->oi->name, p->oi->name, p->ai->enumname); + } + } + } + } + else + { + for (i = 0; i < 256; i++) + { + struct opinfo *p = optable + i; + printf ("\t{0x%02X,\t\"%s\",\tADDR_%s},\n", i, p->oi->name, p->ai->enumname); + } + } + + printf ("0};\n"); + printf ("#endif\n"); + + + /* Generate the operand disassembly case list */ + + printf ("#define DISASM()\\\n"); + { + struct ainfo *a; + for (a = alist; a->name; a++) + { + printf (" case ADDR_%s:\\\n\t", a->enumname); + if (strcmp (a->enumname, "BLOCK_MOVE") == 0) + { + printf ("args[0] = (asR_W65_ABS16 >>8) &0xff;\\\n"); + printf ("\targs[1] = ( asR_W65_ABS16 & 0xff);\\\n"); + printf ("\tprint_operand (0,\"\t$0,$1\",args);\\\n"); + } + else if (a->reloc0 == 0) + { + printf ("print_operand (0, \"\t%s\", 0);\\\n", a->disasmstring ); + } + else if (strlen (a->reloc0)) + { + printf ("args[0] = "); + printf (a->reloc0, "as","as"); + printf (";\\\n"); + printf ("\tprint_operand (%d, \"\t%s\", args);\\\n", + a->regflag, + a->disasmstring); + } + + printf ("\tsize += %s;\\\n\tbreak;\\\n", a->sizer); + } + } + + printf ("\n"); + + /* Generate the operand size and type case list */ + + printf ("#define GETINFO(size,type,pcrel)\\\n"); + { + struct ainfo *a; + for (a = alist; a->name; a++) + { + printf ("\tcase ADDR_%s: ", a->enumname); + printf ("size = %s;type=", a->sizer); + if (a->reloc0 && strlen (a->reloc0)) + { + printf (a->reloc0, "", ""); + } + else + printf ("-1"); + printf (";pcrel=%d;", a->name[0] == 'P'); + printf ("break;\\\n"); + } + } + printf ("\n"); +} + + +/* Write out examples of each opcode */ +static +void +test_table () +{ + struct opinfo *o; + for (o = optable; o->opcode; o++) + { + printf ("\t%s\t", o->opcode); + printf (o->ai->disasmstring, 0x6543210, 0x6543210); + printf ("\n"); + } + +} + +static void +op_table () +{ + struct opinfo *o; + int i = 0; + /* Write four optables, M=0,1 X=0,1 */ + + for (o = optable; o->opcode; o++) + { + printf ("{0x%02x, \"%s\", \"%s\"\t},\n", + i++, + o->opcode, + o->mode); + } +} + +int worked_out_lval; +static void +genfetch (amode, size) + struct ainfo *amode; + int size; +{ + if (amode->howlval) + { + if (strcmp (amode->name, "A") == 0) + { + /* Can't get the lval for the accumulator */ + printf ("src = GET_A;\n"); + } + else + { + printf ("%s\n", amode->howlval); +worked_out_lval = 1; + if (size == 0) + { + printf ("src = fetch16 (lval);\n"); + } + else + { + printf ("src = fetch8 (lval);\n"); + } + } + } + +} + +static void +genstore (amode, size) + struct ainfo *amode; + int size; +{ + if (amode->howlval) + { + if (strcmp (amode->name, "A") == 0) + { + /* Can't get the lval for the accumulator */ + printf ("SET_A (src);\n"); + } + else + { + if (!worked_out_lval) + printf ("%s\n", amode->howlval); + if (size == 0) + { + printf ("store16(lval, src);\n"); + } + else + { + printf ("store8(lval, src);\n"); + } + } + } +} +/* Generate the code to simulate the instructions */ +static void +code_table () +{ + struct opinfo *o; + int x, m; + printf("#include \"interp.h\"\n"); + + for (x = 0; x < 2; x++) { + for (m = 0; m < 2; m++) { + printf("ifunc_X%d_M%d() {\n",x,m); + printf("#undef GET_MBIT\n"); + printf("#undef GET_XBIT\n"); + printf("#define GET_XBIT %d\n", x); + printf("#define GET_MBIT %d\n", m); + printf("STARTFUNC();\n"); + printf("do { register opcode = fetch8(GET_PBRPC); insts++; INC_PC(1);\n"); + printf ("switch (opcode) {\n"); + for (o = optable; o->opcode; o++) + { + printf (" /* %s %s */\n", o->opcode, o->ai->name); + printf ("case 0x%02x:\n", o->code); + printf ("{\n"); + printf ("int l ;\n"); + printf ("register int src;\n"); + printf ("register int lval;\n"); +worked_out_lval = 0; + switch (o->oi->howsrc) + { + case POP_M: + if (m == 0) + printf ("POP16 (src);"); + else + printf ("POP8(src);"); + break; + case POP_X: + if (x == 0) + printf ("POP16 (src);"); + else + printf ("POP8 (src);"); + break; + case POP_8: + printf ("POP8 (src);"); + break; + case POP_16: + printf ("POP16 (src);"); + break; + + case STANDARD_PC_GET: + printf ("%s\n", o->ai->howlval); + break; + + case GET_M: + genfetch (o->ai, m); + break; + case G2_GET: + genfetch (o->ai, m); + break; + case GET_X: + genfetch (o->ai, x); + break; + case BRANCH: + printf ("%s", o->ai->howlval); + break; + case COP_GET: + genfetch(o->ai,1); + break; + case STORE_X: + case STORE_M: + ; + } + + switch (o->oi->howsrc) + { + case BRANCH: + printf ("if (%s) { SET_ONLY_PC(lval);} ", o->oi->howto); + break; + case SPECIAL_CASE: + case GET_M: + case GET_X: + case STORE_X: + case STANDARD_PC_GET: + case G2_GET: + case PUSH_16: + case PUSH_8: + case PUSH_M: + case PUSH_X: + case POP_16: + case POP_8: + case POP_M: + case POP_X: + case COP_GET: + case STORE_M: + printf ("%s", o->oi->howto); + break; + } + + switch (o->oi->howsrc) + { + case STORE_M: + genstore (o->ai, m); + break; + case STORE_X: + genstore (o->ai, x); + break; + case PUSH_M: + if (m == 0) + printf ("PUSH16 (src);"); + else + printf ("PUSH8(src);"); + break; + case PUSH_X: + if (x == 0) + printf ("PUSH16 (src);"); + else + printf ("PUSH8 (src);"); + break; + case PUSH_8: + printf ("PUSH8 (src);"); + break; + case PUSH_16: + printf ("PUSH16 (src);"); + break; + case G2_GET: + genstore (o->ai, x, m); + break; + } + printf ("}\n"); + + printf ("break;\n"); + } + printf ("}\n}\n"); + printf("while (!saved_state.exception);\n"); + printf("#undef GET_MBIT\n"); + printf("#undef GET_XBIT\n"); + printf("#define GET_MBIT (the_mbit)\n"); + printf("#define GET_XBIT (the_xbit)\n"); + + printf("ENDFUNC();\n"); + printf("}"); + } + } +} + +int +main (ac, av) + char **av; +{ + init_table (); + + if (ac > 1) + { + if (av[1][1] == 'a') + { + assembler_table (1); + } + if (av[1][1] == 't') + { + test_table (); + } + if (av[1][1] == 'o') + { + op_table (); + } + if (av[1][1] == 'c') + { + code_table (); + } + } + else + dump_table (); + + dt (); + + return 0; +} |