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annotate src/lwasm.h @ 8:f1df096aa76f 1.1
Tagged 1.1 bugfix release
| author | lost |
|---|---|
| date | Sun, 04 Jan 2009 05:46:07 +0000 |
| parents | 34568fab6058 |
| children | 05d4115b4860 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 lwasm.h |
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3 Copyright © 2008 William Astle |
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4 |
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5 This file is part of LWASM. |
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6 |
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7 LWASM is free software: you can redistribute it and/or modify it under the |
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8 terms of the GNU General Public License as published by the Free Software |
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9 Foundation, either version 3 of the License, or (at your option) any later |
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10 version. |
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11 |
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12 This program is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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15 more details. |
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16 |
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17 You should have received a copy of the GNU General Public License along with |
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18 this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 Contains the main defs used by the assembler |
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21 */ |
| 0 | 22 |
| 23 | |
| 24 #ifndef __lwasm_h_seen__ | |
| 25 #define __lwasm_h_seen__ | |
| 26 | |
| 27 #define MAX_OP_LEN 32 | |
| 28 #define SYMCHAR_START "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
| 29 #define SYMCHAR "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_$." | |
| 30 | |
| 31 #define MACROCHAR_START "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
| 32 #define MACROCHAR "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" | |
| 33 | |
| 34 | |
| 35 #define OPER_INH 0 | |
| 36 #define OPER_RTOR 1 | |
| 37 #define OPER_RLIST 2 | |
| 38 #define OPER_TFM 3 | |
| 39 #define OPER_IMM8 4 | |
| 40 #define OPER_IMM16 5 | |
| 41 #define OPER_IMM32 6 | |
| 42 #define OPER_DIR 7 | |
| 43 #define OPER_EXT 8 | |
| 44 #define OPER_INDEX 9 // indexed with no offset | |
| 45 #define OPER_DIREXT 10 // used as a placeholder when direct/extended unknown | |
| 46 #define OPER_BITBIT 11 // bit to bit direct page opers | |
| 47 #define OPER_REL8 12 | |
| 48 #define OPER_REL16 13 | |
| 49 #define OPER_INDEX5 14 // 5 bit offset indexed | |
| 50 #define OPER_INDEX8 15 // 8 bit offset indexed | |
| 51 #define OPER_INDEX16 16 // 16 bit offset indexed | |
| 52 #define OPER_INDEXV 17 // unknown size offset indexed | |
| 53 #define OPER_EXTIND 18 // extended indirect | |
| 54 #define OPER_LOGICD 19 // logic on mem, direct mode | |
| 55 #define OPER_LOGICE 20 // logic on mem, extended mode | |
| 56 #define OPER_LOGICEI 21 // logic on mem, extended indir mode | |
| 57 #define OPER_LOGICI 22 // logic on mem, indexed no offset | |
| 58 #define OPER_LOGICI5 23 // logic on mem, 5 bit indexed offset | |
| 59 #define OPER_LOGICI8 24 // logic on mem, 8 bit indexed offset | |
| 60 #define OPER_LOGICI16 25 // logic on mem, 16 bit indexed offset | |
| 61 #define OPER_LOGICIV 26 // logic on mem, unknown size offset | |
| 62 | |
| 63 #define OUTPUT_DECB 0 // DECB multirecord format | |
| 64 #define OUTPUT_RAW 1 // raw sequence of bytes | |
| 65 #define OUTPUT_RAWREL 2 // raw but with ORG as a relative offset | |
| 66 | |
| 67 enum | |
| 68 { | |
| 69 ERR_NONE, // no error | |
| 70 ERR_BADOP, // bad opcode | |
| 71 ERR_BADSYM, // illegal symbol | |
| 72 ERR_DUPSYM, // duplicate symbol definition | |
| 73 ERR_NOSYM, // symbol required but not present | |
| 74 ERR_FORWARD, // forward references not permitted here | |
| 75 ERR_OVERFLOW, // byte overflow | |
| 76 ERR_PHASE, // phasing error | |
| 77 ERR_BADOPER, // bad operand | |
| 78 ERR_SYM, // symbol present where not permitted | |
| 79 ERR_UNDEF, // undefined symbol | |
| 80 ERR_OVERFLOW3, // bit number out of range | |
| 81 ERR_BADEXPR, // invalid expression | |
| 82 ERR_BADREG, // invalid register | |
| 83 ERR_BADFN, // bad file name | |
| 84 ERR_ENDM, // end macro without macro | |
| 85 ERR_MACRO, // redefined macro | |
| 86 ERR_NESTNAME, // nested namespace | |
| 87 ERR_BADCOND, // bad condition | |
| 88 ERR_USER, // user error | |
| 89 ERR_PRAGMA, // bad pragma | |
| 90 | |
| 91 ERR_MAXERR // last error in the list | |
| 92 }; | |
| 93 | |
| 94 typedef struct sourceline_s sourceline_t; | |
| 95 | |
| 96 // structure to keep track of errors | |
| 97 typedef struct errortab_s errortab_t; | |
| 98 struct errortab_s { | |
| 99 int errnum; | |
| 100 sourceline_t *line; | |
| 101 errortab_t *next; | |
| 102 }; | |
| 103 | |
| 104 typedef struct macroline_s macroline_t; | |
| 105 struct macroline_s | |
| 106 { | |
| 107 char *linetext; | |
| 108 macroline_t *next; | |
| 109 }; | |
| 110 | |
| 111 typedef struct macrotab_s macrotab_t; | |
| 112 struct macrotab_s | |
| 113 { | |
| 114 char *name; // name of the macro | |
| 115 macroline_t *linehead; // start of the macro lines | |
| 116 macroline_t *linetail; // last line of macro | |
| 117 macrotab_t *next; | |
| 118 }; | |
| 119 | |
| 120 | |
| 121 // structure to keep track of each line of the source | |
| 122 // this also keeps various bits of state about a line | |
| 123 struct sourceline_s { | |
| 124 char *sourcefile; // name of the source file | |
| 125 int lineno; // line number in the source file | |
| 126 char *symstr; // symbol on this line (if any) | |
| 127 int opcode; // index to instab for this line | |
| 128 int opbytes; // actual bytes of opcode | |
| 129 int postbyte; // post byte for the instruction | |
| 130 int numcodebytes; // how many code bytes for this line | |
| 131 unsigned char *codebytes; // actual code for this line | |
| 132 int codesize; // size of codebytes | |
| 133 // if minaddr and maxaddr are the same, we know exactly which address | |
| 134 // we are at so there can be no possible phase error with symbols defined | |
| 135 // here; these are *code* addresses | |
| 136 int len; // length of this insn | |
| 137 int in_macro; // set if it's a macro expansion line | |
| 138 int code_symloc; | |
| 139 int addrmode; // addressing mode of this insn | |
| 140 int addr; // the lowest possible address of this line | |
| 141 int dpval; // dp value at this point in the code | |
| 142 int hassym; // is there a symbol on this line | |
| 143 int addrset; // is this insn a point where the address is *set* (org) | |
| 144 int isequ; // does this insn set a symbol address (equ)? | |
| 145 int isset; // is the address setting from a "set"? | |
| 146 int issetdp; // this insn sets DP | |
| 147 int symaddr; // address for the symbol (if we're setting one) | |
| 148 // also used for "setdp" | |
| 149 int undef; // set if the symbol is undefined | |
| 150 int p1f16; // if we forced 16 bit on pass 1 so we can force it on pass 2 | |
| 151 int nocode; // if set, there is no code to output (rmb) | |
| 152 int notinsn; // if this is not a regular insn (used for formatting output) | |
| 153 char *line; // the text of the line | |
| 154 char *opcstr; // opcode string | |
| 155 char *operstr; // operand string | |
| 156 char *remainder; // remainder string (whole line if no opcode/operand | |
| 157 errortab_t *errors; // errors on this line | |
| 158 sourceline_t *next; // next line | |
| 159 sourceline_t *prev; // previous line | |
| 160 macrotab_t *macro; // pointer to macro table entry if this is a macro | |
| 161 int skipped; // set if the line was skipped | |
| 162 char *user_error; // user error message | |
| 163 int macrodef; // set if it's a macro definition line | |
| 164 }; | |
| 165 | |
| 166 // structure to keep the symbol table | |
| 167 typedef struct symtab_s symtab_t; | |
| 168 struct symtab_s { | |
| 169 char *symbol; // symbol name | |
| 170 sourceline_t *line; // pointer to the line where symbol is defined | |
| 171 int addr; // address of symbol (-1 for unknown) | |
| 172 int flags; // flags for symbol | |
| 173 symtab_t *next; // next symbol | |
| 174 }; | |
| 175 | |
| 176 | |
| 177 // keep track of current assembler state | |
| 178 typedef struct { | |
| 179 int dpval; // current dp value (setdp) | |
| 180 int addr; // current address | |
| 181 symtab_t *symbol_table; | |
| 182 sourceline_t *source_head; | |
| 183 sourceline_t *source_tail; | |
| 184 int errorcount; // error count | |
| 185 int passnum; // which pass are we on? | |
| 186 const char *infile; // input file | |
| 187 const char *outfile;// output file | |
| 188 const char *listfile; // output listing file | |
| 189 int debug; // debug mode | |
| 190 int outformat; // output format type: 0 = decb, 1 = raw | |
| 191 int execaddr; // execution address for the program (END ....) | |
| 192 macrotab_t *macros; // pointer to macros | |
| 193 int inmacro; // are we in a macro? | |
| 194 char *cur_namespace; // current namespace prefix | |
| 195 int skipcond; // are we skipping a condition? | |
| 196 int skipcount; // number of endc we need before we stop skipping | |
| 197 int skipmacro; // are we skipping a macro definition? | |
| 198 int noelse; // skipped an else? | |
| 199 int pragmas; // what pragmas are in effect? | |
| 200 } asmstate_t; | |
| 201 | |
| 202 #define PRAGMA_NOINDEX0TONONE 1 | |
| 203 | |
| 204 | |
| 205 #ifndef __lwasm_c_seen__ | |
| 206 extern int eval_expr(asmstate_t *as, sourceline_t *cl, char **optr, int *val); | |
| 207 extern void register_error(asmstate_t *as, sourceline_t *cl, int errcode); | |
| 208 extern int lookupreg3(const char *rlist, char **str); | |
| 209 extern int lookupreg(const char *reglist, char **str); | |
| 210 extern void lwasm_read_file(asmstate_t *as, char *fname); | |
| 211 extern void addcodebyte(asmstate_t *as, sourceline_t *cl, int cb); | |
| 212 #endif | |
| 213 | |
| 214 #define SYMFLAG_NONE 0 | |
| 215 #define SYMFLAG_SET 1 | |
| 216 | |
| 217 #ifndef __symtab_c_seen__ | |
| 218 #include <stdio.h> | |
| 219 extern void register_symbol(asmstate_t *as, sourceline_t *cl, char *symstr, int val, int flags); | |
| 220 extern int lookup_symbol(asmstate_t *as, char *symstr); | |
| 221 extern void list_symbols(asmstate_t *as, FILE *f); | |
| 222 #endif | |
| 223 | |
| 224 | |
| 225 #ifndef __index_c_seen__ | |
| 226 extern int parse_index_expr(asmstate_t *as, sourceline_t *cl, char **optr, int *postbyte, int *opmode, int *v1); | |
| 227 #endif | |
| 228 | |
| 229 #define emit(cb) do { addcodebyte(as, cl, (cb)); } while (0) | |
| 230 #define emitop(cb) do { if ((cb) > 0xff) addcodebyte(as, cl, (cb)>>8); addcodebyte(as, cl, (cb) & 0xff); } while (0) | |
| 231 #define errorp1(e) do { if (as -> passnum == 1) register_error(as, cl, (e)); } while (0) | |
| 232 #define errorp2(e) do { if (as -> passnum == 2) register_error(as, cl, (e)); } while (0) | |
| 233 | |
| 234 #endif //__lwasm_h_seen__ |