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annotate lwasm/lwasm.h @ 407:b2e007c28b8f
Changed ENDS to be ENDSTRUCT instead of ENDSECTION since ENDSTRUCT is required but ENDSECTION is not; updated docs to reflect change
author | lost@l-w.ca |
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date | Fri, 23 Jul 2010 19:53:43 -0600 |
parents | 027d7fbcdcfc |
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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 { | |
346
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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. | |
78 PRAGMA_IMPORTUNDEFEXPORT = 0x0010 // imports symbol if undefined upon export | |
79 }; | |
80 | |
354 | 81 |
82 enum | |
83 { | |
84 section_flag_bss = 1, // BSS section | |
85 section_flag_none = 0 // no flags | |
86 }; | |
87 | |
374 | 88 typedef struct reloctab_s reloctab_t; |
89 struct reloctab_s | |
90 { | |
376 | 91 lw_expr_t offset; // offset of relocation |
374 | 92 int size; // size of relocation |
376 | 93 lw_expr_t expr; // relocation expression |
374 | 94 reloctab_t *next; |
95 }; | |
96 | |
354 | 97 typedef struct sectiontab_s sectiontab_t; |
98 struct sectiontab_s | |
99 { | |
100 char *name; // section name | |
101 int flags; // section flags; | |
102 lw_expr_t offset; // offset for next instance | |
374 | 103 int oblen; // size of section output |
104 int obsize; // size of output buffer | |
105 unsigned char *obytes; // output buffer | |
106 reloctab_t *reloctab; // table of relocations | |
354 | 107 sectiontab_t *next; |
108 }; | |
109 | |
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110 typedef struct lwasm_error_s lwasm_error_t; |
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111 struct lwasm_error_s |
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112 { |
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113 char *mess; // actual error message |
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114 lwasm_error_t *next; // ptr to next error |
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115 }; |
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116 |
347 | 117 struct line_expr_s |
118 { | |
119 lw_expr_t expr; | |
120 int id; | |
121 struct line_expr_s *next; | |
122 }; | |
123 | |
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124 typedef struct line_s line_t; |
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125 |
356 | 126 typedef struct exportlist_s exportlist_t; |
127 struct exportlist_s | |
128 { | |
129 char *symbol; // symbol to export | |
374 | 130 struct symtabe *se; // symbol table entry |
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131 line_t *line; // line the export is on |
356 | 132 exportlist_t *next; // next in the export list |
133 }; | |
134 | |
135 typedef struct importlist_s importlist_t; | |
136 struct importlist_s | |
137 { | |
138 char *symbol; // symbol to import | |
139 importlist_t *next; // next in the import list | |
140 }; | |
141 | |
337 | 142 struct line_s |
143 { | |
144 lw_expr_t addr; // assembly address of the line | |
145 int len; // the "size" this line occupies (address space wise) (-1 if unknown) | |
146 int insn; // number of insn in insn table | |
342 | 147 int symset; // set if the line symbol was consumed by the instruction |
340 | 148 char *sym; // symbol, if any, on the line |
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149 unsigned char *output; // output bytes |
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150 int outputl; // size of output |
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151 int outputbl; // size of output buffer |
351 | 152 int dpval; // direct page value |
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153 lwasm_error_t *err; // list of errors |
351 | 154 lwasm_error_t *warn; // list of errors |
344
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155 line_t *prev; // previous line |
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156 line_t *next; // next line |
354 | 157 int inmod; // inside a module? |
158 sectiontab_t *csect; // which section are we in? | |
347 | 159 struct line_expr_s *exprs; // expressions used during parsing |
349 | 160 char *lstr; // string passed forward |
357 | 161 int pb; // pass forward post byte |
162 int lint; // pass forward integer | |
361 | 163 int lint2; // another pass forward integer |
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164 asmstate_t *as; // assembler state data ptr |
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165 int pragmas; // pragmas in effect for the line |
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166 int context; // the symbol context number |
382 | 167 char *ltext; // line number |
383
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168 char *linespec; // line spec |
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169 int lineno; // line number |
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170 int soff; // struct offset (for listings) |
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171 int dshow; // data value to show (for listings) |
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172 int dsize; // set to 1 for 8 bit dshow value |
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173 struct symtabe *dptr; // symbol value to display |
337 | 174 }; |
175 | |
342 | 176 enum |
177 { | |
178 symbol_flag_set = 1, // symbol was used with "set" | |
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179 symbol_flag_nocheck = 2, // do not check symbol characters |
342 | 180 symbol_flag_none = 0 // no flags |
181 }; | |
182 | |
183 struct symtabe | |
184 { | |
185 char *symbol; // the name of the symbol | |
186 int context; // symbol context (-1 for global) | |
187 int version; // version of the symbol (for "set") | |
188 int flags; // flags for the symbol | |
374 | 189 sectiontab_t *section; // section the symbol is defined in |
342 | 190 lw_expr_t value; // symbol value |
191 struct symtabe *next; // next symbol in the table | |
192 }; | |
193 | |
194 typedef struct | |
195 { | |
196 struct symtabe *head; // start of symbol table | |
197 } symtab_t; | |
198 | |
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199 typedef struct macrotab_s macrotab_t; |
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200 struct macrotab_s |
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201 { |
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202 char *name; // name of macro |
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203 char **lines; // macro lines |
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204 int numlines; // number lines in macro |
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205 macrotab_t *next; // next macro in list |
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206 }; |
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207 |
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208 typedef struct structtab_s structtab_t; |
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209 typedef struct structtab_field_s structtab_field_t; |
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210 |
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211 struct structtab_field_s |
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212 { |
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213 char *name; // structure field name - NULL for anonymous |
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214 int size; // structure field size |
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215 structtab_t *substruct; // sub structure if there is one |
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216 structtab_field_t *next; // next field entry |
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217 }; |
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218 |
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219 struct structtab_s |
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220 { |
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221 char *name; // name of structure |
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222 int size; // number of bytes taken by struct |
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223 structtab_field_t *fields; // fields in the structure |
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224 structtab_t *next; // next structure |
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225 }; |
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226 |
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227 struct asmstate_s |
323 | 228 { |
324 | 229 int output_format; // output format |
230 int target; // assembly target | |
231 int debug_level; // level of debugging requested | |
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232 FILE *debug_file; // FILE * to output debug messages to |
325 | 233 int flags; // assembly flags |
234 int pragmas; // pragmas currently in effect | |
344
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235 int errorcount; // number of errors encountered |
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236 int inmacro; // are we in a macro? |
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237 int instruct; // are w in a structure? |
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238 int skipcond; // skipping a condition? |
351 | 239 int skipcount; // depth of "skipping" |
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240 int skipmacro; // are we skipping in a macro? |
347 | 241 int endseen; // have we seen an "end" pseudo? |
242 int execaddr; // address from "end" | |
354 | 243 int inmod; // inside an os9 module? |
244 unsigned char crc[3]; // crc accumulator | |
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245 int badsymerr; // throw error on undef sym if set |
325 | 246 |
337 | 247 line_t *line_head; // start of lines list |
248 line_t *line_tail; // tail of lines list | |
346
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249 |
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250 line_t *cl; // current line pointer |
342 | 251 |
353 | 252 sectiontab_t *csect; // current section |
253 | |
342 | 254 int context; // the current "context" |
345
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255 int nextcontext; // the next available context |
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256 |
342 | 257 symtab_t symtab; // meta data for the symbol table |
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258 macrotab_t *macros; // macro table |
353 | 259 sectiontab_t *sections; // section table |
356 | 260 exportlist_t *exportlist; // list of exported symbols |
261 importlist_t *importlist; // list of imported symbols | |
325 | 262 char *list_file; // name of file to list to |
263 char *output_file; // output file name | |
324 | 264 lw_stringlist_t input_files; // files to assemble |
330 | 265 void *input_data; // opaque data used by the input system |
325 | 266 lw_stringlist_t include_list; // include paths |
329 | 267 lw_stack_t file_dir; // stack of the "current file" dir |
384 | 268 lw_stack_t includelist; |
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269 |
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270 structtab_t *structs; // defined structures |
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271 structtab_t *cstruct; // current structure |
375 | 272 |
273 int exportcheck; // set if we need to collapse out the section base to 0 | |
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274 }; |
323 | 275 |
342 | 276 #ifndef ___symbol_c_seen___ |
277 | |
344
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278 extern struct symtabe *register_symbol(asmstate_t *as, line_t *cl, char *sym, lw_expr_t value, int flags); |
363
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279 extern struct symtabe *lookup_symbol(asmstate_t *as, line_t *cl, char *sym); |
342 | 280 |
281 #endif | |
282 | |
344
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283 #ifndef ___lwasm_c_seen___ |
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284 |
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285 extern void lwasm_register_error(asmstate_t *as, line_t *cl, const char *msg, ...); |
351 | 286 extern void lwasm_register_warning(asmstate_t *as, line_t *cl, const char *msg, ...); |
345
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Basic macro processor ported forward; added context break handling for local symbols
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287 extern int lwasm_next_context(asmstate_t *as); |
346
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288 extern void lwasm_emit(line_t *cl, int byte); |
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289 extern void lwasm_emitop(line_t *cl, int opc); |
344
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290 |
347 | 291 extern void lwasm_save_expr(line_t *cl, int id, lw_expr_t expr); |
292 extern lw_expr_t lwasm_fetch_expr(line_t *cl, int id); | |
293 extern lw_expr_t lwasm_parse_expr(asmstate_t *as, char **p); | |
294 extern int lwasm_emitexpr(line_t *cl, lw_expr_t expr, int s); | |
295 | |
296 extern void skip_operand(char **p); | |
297 | |
357 | 298 extern int lwasm_lookupreg2(const char *rlist, char **p); |
359 | 299 extern int lwasm_lookupreg3(const char *rlist, char **p); |
357 | 300 |
363
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301 extern void lwasm_show_errors(asmstate_t *as); |
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302 |
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303 extern int lwasm_reduce_expr(asmstate_t *as, lw_expr_t expr); |
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304 |
372
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305 extern void debug_message(asmstate_t *as, int level, const char *fmt, ...); |
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306 extern void dump_state(asmstate_t *as); |
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307 |
387
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Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
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308 extern lw_expr_t lwasm_parse_cond(asmstate_t *as, char **p); |
372
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309 |
344
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310 #endif |
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311 |
346
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312 #define OPLEN(op) (((op)>0xFF)?2:1) |
360
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Indexed stage 2; set line structure to track pragmas in effect for that line
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313 #define CURPRAGMA(l,p) (((l)->pragmas & (p)) ? 1 : 0) |
344
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314 |
324 | 315 #endif /* ___lwasm_h_seen___ */ |