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annotate lwasm/lwasm.h @ 448:5cccf90bf838 3.0 tip
Fixed bug with complex external references generating invalid relocations in the object file
| author | lost@l-w.ca |
|---|---|
| date | Fri, 05 Nov 2010 22:27:00 -0600 |
| parents | a9521955554f |
| children |
| rev | line source |
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| 323 | 1 /* |
| 2 lwasm.h | |
| 3 | |
| 4 Copyright © 2010 William Astle | |
| 5 | |
| 6 This file is part of LWTOOLS. | |
| 7 | |
| 8 LWTOOLS is free software: you can redistribute it and/or modify it under the | |
| 9 terms of the GNU General Public License as published by the Free Software | |
| 10 Foundation, either version 3 of the License, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 This program is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 16 more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License along with | |
| 19 this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 */ | |
| 21 | |
| 22 #ifndef ___lwasm_h_seen___ | |
| 23 #define ___lwasm_h_seen___ | |
| 24 | |
| 337 | 25 #include <lw_expr.h> |
| 324 | 26 #include <lw_stringlist.h> |
| 329 | 27 #include <lw_stack.h> |
| 324 | 28 |
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29 |
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30 // these are allowed chars BELOW 0x80 for symbols |
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31 // first is symbol start chars, second is anywhere in symbol |
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32 #define SSYMCHARS "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_@$" |
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33 #define SYMCHARS SSYMCHARS ".?0123456789" |
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34 |
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35 typedef struct asmstate_s asmstate_t; |
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36 |
| 337 | 37 enum |
| 38 { | |
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39 lwasm_expr_linelen = 1, // length of ref'd line |
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40 lwasm_expr_lineaddr = 2, // addr of ref'd line |
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41 lwasm_expr_nextbp = 3, // next branch point |
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42 lwasm_expr_prevbp = 4, // previous branch point |
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43 lwasm_expr_syment = 5, // symbol table entry |
| 367 | 44 lwasm_expr_import = 6, // symbol import entry |
| 45 lwasm_expr_secbase = 7 // section base address | |
| 337 | 46 }; |
| 47 | |
| 323 | 48 enum lwasm_output_e |
| 49 { | |
| 50 OUTPUT_DECB = 0, // DECB multirecord format | |
| 51 OUTPUT_RAW, // raw sequence of bytes | |
| 52 OUTPUT_OBJ, // proprietary object file format | |
| 53 OUTPUT_RAWREL, // raw bytes where ORG causes a SEEK in the file | |
| 54 OUTPUT_OS9 // os9 module target | |
| 55 }; | |
| 56 | |
| 57 enum lwasm_target_e | |
| 58 { | |
| 59 TARGET_6309 = 0, // target 6309 CPU | |
| 60 TARGET_6809 // target 6809 CPU (no 6309 ops) | |
| 61 }; | |
| 62 | |
| 325 | 63 enum lwasm_flags_e |
| 64 { | |
| 65 FLAG_LIST = 0x0001, | |
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66 FLAG_DEPEND = 0x0002, |
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67 FLAG_SYMBOLS = 0x004, |
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68 FLAG_NONE = 0 |
| 325 | 69 }; |
| 70 | |
| 71 enum lwasm_pragmas_e | |
| 72 { | |
| 73 PRAGMA_NONE = 0, // no pragmas in effect | |
| 74 PRAGMA_DOLLARNOTLOCAL = 0x0001, // dollar sign does not make a symbol local | |
| 75 PRAGMA_NOINDEX0TONONE = 0x0002, // do not change implicit 0,R to ,R | |
| 76 PRAGMA_UNDEFEXTERN = 0x0004, // undefined symbols are considered to be external | |
| 77 PRAGMA_CESCAPES = 0x0008, // allow C style escapes in fcc, fcs, fcn, etc. | |
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78 PRAGMA_IMPORTUNDEFEXPORT = 0x0010, // imports symbol if undefined upon export |
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79 PRAGMA_PCASPCR = 0x0020 // treats ,PC as ,PCR instead of constant offset |
| 325 | 80 }; |
| 81 | |
| 354 | 82 |
| 83 enum | |
| 84 { | |
| 85 section_flag_bss = 1, // BSS section | |
| 86 section_flag_none = 0 // no flags | |
| 87 }; | |
| 88 | |
| 374 | 89 typedef struct reloctab_s reloctab_t; |
| 90 struct reloctab_s | |
| 91 { | |
| 376 | 92 lw_expr_t offset; // offset of relocation |
| 374 | 93 int size; // size of relocation |
| 376 | 94 lw_expr_t expr; // relocation expression |
| 374 | 95 reloctab_t *next; |
| 96 }; | |
| 97 | |
| 354 | 98 typedef struct sectiontab_s sectiontab_t; |
| 99 struct sectiontab_s | |
| 100 { | |
| 101 char *name; // section name | |
| 102 int flags; // section flags; | |
| 103 lw_expr_t offset; // offset for next instance | |
| 374 | 104 int oblen; // size of section output |
| 105 int obsize; // size of output buffer | |
| 106 unsigned char *obytes; // output buffer | |
| 107 reloctab_t *reloctab; // table of relocations | |
| 354 | 108 sectiontab_t *next; |
| 109 }; | |
| 110 | |
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111 typedef struct lwasm_error_s lwasm_error_t; |
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112 struct lwasm_error_s |
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113 { |
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114 char *mess; // actual error message |
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115 lwasm_error_t *next; // ptr to next error |
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116 }; |
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117 |
| 347 | 118 struct line_expr_s |
| 119 { | |
| 120 lw_expr_t expr; | |
| 121 int id; | |
| 122 struct line_expr_s *next; | |
| 123 }; | |
| 124 | |
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125 typedef struct line_s line_t; |
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126 |
| 356 | 127 typedef struct exportlist_s exportlist_t; |
| 128 struct exportlist_s | |
| 129 { | |
| 130 char *symbol; // symbol to export | |
| 374 | 131 struct symtabe *se; // symbol table entry |
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132 line_t *line; // line the export is on |
| 356 | 133 exportlist_t *next; // next in the export list |
| 134 }; | |
| 135 | |
| 136 typedef struct importlist_s importlist_t; | |
| 137 struct importlist_s | |
| 138 { | |
| 139 char *symbol; // symbol to import | |
| 140 importlist_t *next; // next in the import list | |
| 141 }; | |
| 142 | |
| 337 | 143 struct line_s |
| 144 { | |
| 145 lw_expr_t addr; // assembly address of the line | |
| 146 int len; // the "size" this line occupies (address space wise) (-1 if unknown) | |
| 147 int insn; // number of insn in insn table | |
| 342 | 148 int symset; // set if the line symbol was consumed by the instruction |
| 340 | 149 char *sym; // symbol, if any, on the line |
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150 unsigned char *output; // output bytes |
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151 int outputl; // size of output |
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152 int outputbl; // size of output buffer |
| 351 | 153 int dpval; // direct page value |
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154 lwasm_error_t *err; // list of errors |
| 351 | 155 lwasm_error_t *warn; // list of errors |
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156 line_t *prev; // previous line |
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157 line_t *next; // next line |
| 354 | 158 int inmod; // inside a module? |
| 159 sectiontab_t *csect; // which section are we in? | |
| 347 | 160 struct line_expr_s *exprs; // expressions used during parsing |
| 349 | 161 char *lstr; // string passed forward |
| 357 | 162 int pb; // pass forward post byte |
| 163 int lint; // pass forward integer | |
| 361 | 164 int lint2; // another pass forward integer |
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165 asmstate_t *as; // assembler state data ptr |
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166 int pragmas; // pragmas in effect for the line |
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167 int context; // the symbol context number |
| 382 | 168 char *ltext; // line number |
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169 char *linespec; // line spec |
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170 int lineno; // line number |
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171 int soff; // struct offset (for listings) |
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172 int dshow; // data value to show (for listings) |
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173 int dsize; // set to 1 for 8 bit dshow value |
| 418 | 174 int isbrpt; // set to 1 if this line is a branch point |
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175 struct symtabe *dptr; // symbol value to display |
| 337 | 176 }; |
| 177 | |
| 342 | 178 enum |
| 179 { | |
| 180 symbol_flag_set = 1, // symbol was used with "set" | |
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181 symbol_flag_nocheck = 2, // do not check symbol characters |
| 342 | 182 symbol_flag_none = 0 // no flags |
| 183 }; | |
| 184 | |
| 185 struct symtabe | |
| 186 { | |
| 187 char *symbol; // the name of the symbol | |
| 188 int context; // symbol context (-1 for global) | |
| 189 int version; // version of the symbol (for "set") | |
| 190 int flags; // flags for the symbol | |
| 374 | 191 sectiontab_t *section; // section the symbol is defined in |
| 342 | 192 lw_expr_t value; // symbol value |
| 193 struct symtabe *next; // next symbol in the table | |
| 194 }; | |
| 195 | |
| 196 typedef struct | |
| 197 { | |
| 198 struct symtabe *head; // start of symbol table | |
| 199 } symtab_t; | |
| 200 | |
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201 typedef struct macrotab_s macrotab_t; |
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202 struct macrotab_s |
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203 { |
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204 char *name; // name of macro |
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205 char **lines; // macro lines |
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206 int numlines; // number lines in macro |
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207 macrotab_t *next; // next macro in list |
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208 }; |
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209 |
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210 typedef struct structtab_s structtab_t; |
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211 typedef struct structtab_field_s structtab_field_t; |
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212 |
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213 struct structtab_field_s |
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214 { |
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215 char *name; // structure field name - NULL for anonymous |
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216 int size; // structure field size |
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217 structtab_t *substruct; // sub structure if there is one |
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218 structtab_field_t *next; // next field entry |
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219 }; |
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220 |
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221 struct structtab_s |
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222 { |
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223 char *name; // name of structure |
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224 int size; // number of bytes taken by struct |
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225 structtab_field_t *fields; // fields in the structure |
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226 structtab_t *next; // next structure |
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227 }; |
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228 |
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229 struct asmstate_s |
| 323 | 230 { |
| 324 | 231 int output_format; // output format |
| 232 int target; // assembly target | |
| 233 int debug_level; // level of debugging requested | |
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234 FILE *debug_file; // FILE * to output debug messages to |
| 325 | 235 int flags; // assembly flags |
| 236 int pragmas; // pragmas currently in effect | |
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237 int errorcount; // number of errors encountered |
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238 int inmacro; // are we in a macro? |
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239 int instruct; // are w in a structure? |
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240 int skipcond; // skipping a condition? |
| 351 | 241 int skipcount; // depth of "skipping" |
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242 int skipmacro; // are we skipping in a macro? |
| 347 | 243 int endseen; // have we seen an "end" pseudo? |
| 244 int execaddr; // address from "end" | |
| 354 | 245 int inmod; // inside an os9 module? |
| 246 unsigned char crc[3]; // crc accumulator | |
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247 int badsymerr; // throw error on undef sym if set |
| 325 | 248 |
| 337 | 249 line_t *line_head; // start of lines list |
| 250 line_t *line_tail; // tail of lines list | |
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251 |
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252 line_t *cl; // current line pointer |
| 342 | 253 |
| 353 | 254 sectiontab_t *csect; // current section |
| 255 | |
| 342 | 256 int context; // the current "context" |
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257 int nextcontext; // the next available context |
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258 |
| 342 | 259 symtab_t symtab; // meta data for the symbol table |
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260 macrotab_t *macros; // macro table |
| 353 | 261 sectiontab_t *sections; // section table |
| 356 | 262 exportlist_t *exportlist; // list of exported symbols |
| 263 importlist_t *importlist; // list of imported symbols | |
| 325 | 264 char *list_file; // name of file to list to |
| 265 char *output_file; // output file name | |
| 324 | 266 lw_stringlist_t input_files; // files to assemble |
| 330 | 267 void *input_data; // opaque data used by the input system |
| 325 | 268 lw_stringlist_t include_list; // include paths |
| 329 | 269 lw_stack_t file_dir; // stack of the "current file" dir |
| 384 | 270 lw_stack_t includelist; |
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389
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271 |
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272 structtab_t *structs; // defined structures |
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273 structtab_t *cstruct; // current structure |
| 375 | 274 |
| 275 int exportcheck; // set if we need to collapse out the section base to 0 | |
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276 }; |
| 323 | 277 |
| 342 | 278 #ifndef ___symbol_c_seen___ |
| 279 | |
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280 extern struct symtabe *register_symbol(asmstate_t *as, line_t *cl, char *sym, lw_expr_t value, int flags); |
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281 extern struct symtabe *lookup_symbol(asmstate_t *as, line_t *cl, char *sym); |
| 342 | 282 |
| 283 #endif | |
| 284 | |
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285 #ifndef ___lwasm_c_seen___ |
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286 |
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287 extern void lwasm_register_error(asmstate_t *as, line_t *cl, const char *msg, ...); |
| 351 | 288 extern void lwasm_register_warning(asmstate_t *as, line_t *cl, const char *msg, ...); |
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345
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289 extern int lwasm_next_context(asmstate_t *as); |
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346
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290 extern void lwasm_emit(line_t *cl, int byte); |
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291 extern void lwasm_emitop(line_t *cl, int opc); |
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292 |
| 347 | 293 extern void lwasm_save_expr(line_t *cl, int id, lw_expr_t expr); |
| 294 extern lw_expr_t lwasm_fetch_expr(line_t *cl, int id); | |
| 295 extern lw_expr_t lwasm_parse_expr(asmstate_t *as, char **p); | |
| 296 extern int lwasm_emitexpr(line_t *cl, lw_expr_t expr, int s); | |
| 297 | |
| 298 extern void skip_operand(char **p); | |
| 299 | |
| 357 | 300 extern int lwasm_lookupreg2(const char *rlist, char **p); |
| 359 | 301 extern int lwasm_lookupreg3(const char *rlist, char **p); |
| 357 | 302 |
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303 extern void lwasm_show_errors(asmstate_t *as); |
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304 |
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305 extern int lwasm_reduce_expr(asmstate_t *as, lw_expr_t expr); |
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306 |
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307 extern void debug_message(asmstate_t *as, int level, const char *fmt, ...); |
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308 extern void dump_state(asmstate_t *as); |
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309 |
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310 extern lw_expr_t lwasm_parse_cond(asmstate_t *as, char **p); |
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311 |
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312 #endif |
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313 |
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314 #define OPLEN(op) (((op)>0xFF)?2:1) |
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360
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315 #define CURPRAGMA(l,p) (((l)->pragmas & (p)) ? 1 : 0) |
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316 |
| 324 | 317 #endif /* ___lwasm_h_seen___ */ |