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252b5132 RH |
1 | /* Header file for targets using CGEN: Cpu tools GENerator. |
2 | ||
4fdf0a75 AM |
3 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
4 | Free Software Foundation, Inc. | |
252b5132 RH |
5 | |
6 | This file is part of GDB, the GNU debugger, and the GNU Binutils. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License along | |
19 | with this program; if not, write to the Free Software Foundation, Inc., | |
20 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #ifndef CGEN_H | |
23 | #define CGEN_H | |
24 | ||
25 | /* ??? This file requires bfd.h but only to get bfd_vma. | |
26 | Seems like an awful lot to require just to get such a fundamental type. | |
27 | Perhaps the definition of bfd_vma can be moved outside of bfd.h. | |
28 | Or perhaps one could duplicate its definition in another file. | |
29 | Until such time, this file conditionally compiles definitions that require | |
ea6a213a | 30 | bfd_vma using __BFD_H_SEEN__. */ |
252b5132 RH |
31 | |
32 | /* Enums must be defined before they can be used. | |
33 | Allow them to be used in struct definitions, even though the enum must | |
34 | be defined elsewhere. | |
35 | If CGEN_ARCH isn't defined, this file is being included by something other | |
36 | than <arch>-desc.h. */ | |
37 | ||
38 | /* Prepend the arch name, defined in <arch>-desc.h, and _cgen_ to symbol S. | |
39 | The lack of spaces in the arg list is important for non-stdc systems. | |
40 | This file is included by <arch>-desc.h. | |
41 | It can be included independently of <arch>-desc.h, in which case the arch | |
42 | dependent portions will be declared as "unknown_cgen_foo". */ | |
43 | ||
44 | #ifndef CGEN_SYM | |
45 | #define CGEN_SYM(s) CONCAT3 (unknown,_cgen_,s) | |
46 | #endif | |
47 | ||
48 | /* This file contains the static (unchanging) pieces and as much other stuff | |
49 | as we can reasonably put here. It's generally cleaner to put stuff here | |
50 | rather than having it machine generated if possible. */ | |
51 | ||
52 | /* The assembler syntax is made up of expressions (duh...). | |
53 | At the lowest level the values are mnemonics, register names, numbers, etc. | |
54 | Above that are subexpressions, if any (an example might be the | |
55 | "effective address" in m68k cpus). Subexpressions are wip. | |
56 | At the second highest level are the insns themselves. Above that are | |
57 | pseudo-insns, synthetic insns, and macros, if any. */ | |
58 | \f | |
59 | /* Lots of cpu's have a fixed insn size, or one which rarely changes, | |
60 | and it's generally easier to handle these by treating the insn as an | |
61 | integer type, rather than an array of characters. So we allow targets | |
62 | to control this. When an integer type the value is in host byte order, | |
63 | when an array of characters the value is in target byte order. */ | |
64 | ||
65 | typedef unsigned int CGEN_INSN_INT; | |
66 | #if CGEN_INT_INSN_P | |
67 | typedef CGEN_INSN_INT CGEN_INSN_BYTES; | |
68 | typedef CGEN_INSN_INT *CGEN_INSN_BYTES_PTR; | |
69 | #else | |
70 | typedef unsigned char *CGEN_INSN_BYTES; | |
71 | typedef unsigned char *CGEN_INSN_BYTES_PTR; | |
72 | #endif | |
73 | ||
74 | #ifdef __GNUC__ | |
75 | #define CGEN_INLINE __inline__ | |
76 | #else | |
77 | #define CGEN_INLINE | |
78 | #endif | |
79 | ||
80 | enum cgen_endian | |
81 | { | |
82 | CGEN_ENDIAN_UNKNOWN, | |
83 | CGEN_ENDIAN_LITTLE, | |
84 | CGEN_ENDIAN_BIG | |
85 | }; | |
86 | ||
87 | /* Forward decl. */ | |
88 | ||
89 | typedef struct cgen_insn CGEN_INSN; | |
90 | ||
91 | /* Opaque pointer version for use by external world. */ | |
92 | ||
93 | typedef struct cgen_cpu_desc *CGEN_CPU_DESC; | |
94 | \f | |
95 | /* Attributes. | |
96 | Attributes are used to describe various random things associated with | |
97 | an object (ifield, hardware, operand, insn, whatever) and are specified | |
98 | as name/value pairs. | |
99 | Integer attributes computed at compile time are currently all that's | |
100 | supported, though adding string attributes and run-time computation is | |
101 | straightforward. Integer attribute values are always host int's | |
102 | (signed or unsigned). For portability, this means 32 bits. | |
103 | Integer attributes are further categorized as boolean, bitset, integer, | |
104 | and enum types. Boolean attributes appear frequently enough that they're | |
105 | recorded in one host int. This limits the maximum number of boolean | |
106 | attributes to 32, though that's a *lot* of attributes. */ | |
107 | ||
108 | /* Type of attribute values. */ | |
109 | ||
110 | typedef int CGEN_ATTR_VALUE_TYPE; | |
111 | ||
112 | /* Struct to record attribute information. */ | |
113 | ||
114 | typedef struct | |
115 | { | |
116 | /* Boolean attributes. */ | |
117 | unsigned int bool; | |
118 | /* Non-boolean integer attributes. */ | |
119 | CGEN_ATTR_VALUE_TYPE nonbool[1]; | |
120 | } CGEN_ATTR; | |
121 | ||
122 | /* Define a structure member for attributes with N non-boolean entries. | |
123 | There is no maximum number of non-boolean attributes. | |
124 | There is a maximum of 32 boolean attributes (since they are all recorded | |
125 | in one host int). */ | |
126 | ||
127 | #define CGEN_ATTR_TYPE(n) \ | |
128 | struct { unsigned int bool; \ | |
129 | CGEN_ATTR_VALUE_TYPE nonbool[(n) ? (n) : 1]; } | |
130 | ||
131 | /* Return the boolean attributes. */ | |
132 | ||
133 | #define CGEN_ATTR_BOOLS(a) ((a)->bool) | |
134 | ||
135 | /* Non-boolean attribute numbers are offset by this much. */ | |
136 | ||
137 | #define CGEN_ATTR_NBOOL_OFFSET 32 | |
138 | ||
139 | /* Given a boolean attribute number, return its mask. */ | |
140 | ||
141 | #define CGEN_ATTR_MASK(attr) (1 << (attr)) | |
142 | ||
143 | /* Return the value of boolean attribute ATTR in ATTRS. */ | |
144 | ||
145 | #define CGEN_BOOL_ATTR(attrs, attr) ((CGEN_ATTR_MASK (attr) & (attrs)) != 0) | |
146 | ||
147 | /* Return value of attribute ATTR in ATTR_TABLE for OBJ. | |
148 | OBJ is a pointer to the entity that has the attributes | |
149 | (??? not used at present but is reserved for future purposes - eventually | |
150 | the goal is to allow recording attributes in source form and computing | |
151 | them lazily at runtime, not sure of the details yet). */ | |
152 | ||
153 | #define CGEN_ATTR_VALUE(obj, attr_table, attr) \ | |
154 | ((unsigned int) (attr) < CGEN_ATTR_NBOOL_OFFSET \ | |
155 | ? ((CGEN_ATTR_BOOLS (attr_table) & CGEN_ATTR_MASK (attr)) != 0) \ | |
156 | : ((attr_table)->nonbool[(attr) - CGEN_ATTR_NBOOL_OFFSET])) | |
157 | ||
158 | /* Attribute name/value tables. | |
159 | These are used to assist parsing of descriptions at run-time. */ | |
160 | ||
161 | typedef struct | |
162 | { | |
163 | const char * name; | |
164 | CGEN_ATTR_VALUE_TYPE value; | |
165 | } CGEN_ATTR_ENTRY; | |
166 | ||
167 | /* For each domain (ifld,hw,operand,insn), list of attributes. */ | |
168 | ||
169 | typedef struct | |
170 | { | |
171 | const char * name; | |
172 | const CGEN_ATTR_ENTRY * dfault; | |
173 | const CGEN_ATTR_ENTRY * vals; | |
174 | } CGEN_ATTR_TABLE; | |
175 | \f | |
176 | /* Instruction set variants. */ | |
177 | ||
178 | typedef struct { | |
179 | const char *name; | |
180 | ||
181 | /* Default instruction size (in bits). | |
182 | This is used by the assembler when it encounters an unknown insn. */ | |
183 | unsigned int default_insn_bitsize; | |
184 | ||
185 | /* Base instruction size (in bits). | |
186 | For non-LIW cpus this is generally the length of the smallest insn. | |
187 | For LIW cpus its wip (work-in-progress). For the m32r its 32. */ | |
188 | unsigned int base_insn_bitsize; | |
189 | ||
190 | /* Minimum/maximum instruction size (in bits). */ | |
191 | unsigned int min_insn_bitsize; | |
192 | unsigned int max_insn_bitsize; | |
193 | } CGEN_ISA; | |
194 | ||
195 | /* Machine variants. */ | |
196 | ||
197 | typedef struct { | |
198 | const char *name; | |
199 | /* The argument to bfd_arch_info->scan. */ | |
200 | const char *bfd_name; | |
201 | /* one of enum mach_attr */ | |
202 | int num; | |
81f6038f FCE |
203 | /* parameter from mach->cpu */ |
204 | unsigned int insn_chunk_bitsize; | |
252b5132 RH |
205 | } CGEN_MACH; |
206 | \f | |
207 | /* Parse result (also extraction result). | |
208 | ||
209 | The result of parsing an insn is stored here. | |
210 | To generate the actual insn, this is passed to the insert handler. | |
211 | When printing an insn, the result of extraction is stored here. | |
212 | To print the insn, this is passed to the print handler. | |
213 | ||
214 | It is machine generated so we don't define it here, | |
215 | but we do need a forward decl for the handler fns. | |
216 | ||
217 | There is one member for each possible field in the insn. | |
218 | The type depends on the field. | |
219 | Also recorded here is the computed length of the insn for architectures | |
220 | where it varies. | |
221 | */ | |
222 | ||
223 | typedef struct cgen_fields CGEN_FIELDS; | |
224 | ||
225 | /* Total length of the insn, as recorded in the `fields' struct. */ | |
226 | /* ??? The field insert handler has lots of opportunities for optimization | |
227 | if it ever gets inlined. On architectures where insns all have the same | |
228 | size, may wish to detect that and make this macro a constant - to allow | |
229 | further optimizations. */ | |
230 | ||
231 | #define CGEN_FIELDS_BITSIZE(fields) ((fields)->length) | |
232 | \f | |
233 | /* Extraction support for variable length insn sets. */ | |
234 | ||
235 | /* When disassembling we don't know the number of bytes to read at the start. | |
236 | So the first CGEN_BASE_INSN_SIZE bytes are read at the start and the rest | |
237 | are read when needed. This struct controls this. It is basically the | |
238 | disassemble_info stuff, except that we provide a cache for values already | |
239 | read (since bytes can typically be read several times to fetch multiple | |
240 | operands that may be in them), and that extraction of fields is needed | |
241 | in contexts other than disassembly. */ | |
242 | ||
243 | typedef struct { | |
244 | /* A pointer to the disassemble_info struct. | |
245 | We don't require dis-asm.h so we use PTR for the type here. | |
246 | If NULL, BYTES is full of valid data (VALID == -1). */ | |
247 | PTR dis_info; | |
248 | /* Points to a working buffer of sufficient size. */ | |
249 | unsigned char *insn_bytes; | |
250 | /* Mask of bytes that are valid in INSN_BYTES. */ | |
251 | unsigned int valid; | |
252 | } CGEN_EXTRACT_INFO; | |
253 | \f | |
254 | /* Associated with each insn or expression is a set of "handlers" for | |
255 | performing operations like parsing, printing, etc. These require a bfd_vma | |
256 | value to be passed around but we don't want all applications to need bfd.h. | |
257 | So this stuff is only provided if bfd.h has been included. */ | |
258 | ||
259 | /* Parse handler. | |
260 | CD is a cpu table descriptor. | |
261 | INSN is a pointer to a struct describing the insn being parsed. | |
262 | STRP is a pointer to a pointer to the text being parsed. | |
263 | FIELDS is a pointer to a cgen_fields struct in which the results are placed. | |
264 | If the expression is successfully parsed, *STRP is updated. | |
265 | If not it is left alone. | |
266 | The result is NULL if success or an error message. */ | |
267 | typedef const char * (cgen_parse_fn) | |
268 | PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *insn_, | |
269 | const char **strp_, CGEN_FIELDS *fields_)); | |
270 | ||
271 | /* Insert handler. | |
272 | CD is a cpu table descriptor. | |
273 | INSN is a pointer to a struct describing the insn being parsed. | |
274 | FIELDS is a pointer to a cgen_fields struct from which the values | |
275 | are fetched. | |
276 | INSNP is a pointer to a buffer in which to place the insn. | |
277 | PC is the pc value of the insn. | |
278 | The result is an error message or NULL if success. */ | |
279 | ||
ea6a213a | 280 | #ifdef __BFD_H_SEEN__ |
252b5132 RH |
281 | typedef const char * (cgen_insert_fn) |
282 | PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *insn_, | |
283 | CGEN_FIELDS *fields_, CGEN_INSN_BYTES_PTR insnp_, | |
284 | bfd_vma pc_)); | |
285 | #else | |
286 | typedef const char * (cgen_insert_fn) (); | |
287 | #endif | |
288 | ||
289 | /* Extract handler. | |
290 | CD is a cpu table descriptor. | |
291 | INSN is a pointer to a struct describing the insn being parsed. | |
292 | The second argument is a pointer to a struct controlling extraction | |
293 | (only used for variable length insns). | |
294 | EX_INFO is a pointer to a struct for controlling reading of further | |
295 | bytes for the insn. | |
296 | BASE_INSN is the first CGEN_BASE_INSN_SIZE bytes (host order). | |
297 | FIELDS is a pointer to a cgen_fields struct in which the results are placed. | |
298 | PC is the pc value of the insn. | |
299 | The result is the length of the insn in bits or zero if not recognized. */ | |
300 | ||
ea6a213a | 301 | #ifdef __BFD_H_SEEN__ |
252b5132 RH |
302 | typedef int (cgen_extract_fn) |
303 | PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *insn_, | |
304 | CGEN_EXTRACT_INFO *ex_info_, CGEN_INSN_INT base_insn_, | |
305 | CGEN_FIELDS *fields_, bfd_vma pc_)); | |
306 | #else | |
307 | typedef int (cgen_extract_fn) (); | |
308 | #endif | |
309 | ||
310 | /* Print handler. | |
311 | CD is a cpu table descriptor. | |
312 | INFO is a pointer to the disassembly info. | |
313 | Eg: disassemble_info. It's defined as `PTR' so this file can be included | |
314 | without dis-asm.h. | |
315 | INSN is a pointer to a struct describing the insn being printed. | |
316 | FIELDS is a pointer to a cgen_fields struct. | |
317 | PC is the pc value of the insn. | |
318 | LEN is the length of the insn, in bits. */ | |
319 | ||
ea6a213a | 320 | #ifdef __BFD_H_SEEN__ |
252b5132 RH |
321 | typedef void (cgen_print_fn) |
322 | PARAMS ((CGEN_CPU_DESC, PTR info_, const CGEN_INSN *insn_, | |
323 | CGEN_FIELDS *fields_, bfd_vma pc_, int len_)); | |
324 | #else | |
325 | typedef void (cgen_print_fn) (); | |
326 | #endif | |
327 | ||
328 | /* Parse/insert/extract/print handlers. | |
329 | ||
330 | Indices into the handler tables. | |
331 | We could use pointers here instead, but 90% of them are generally identical | |
332 | and that's a lot of redundant data. Making these unsigned char indices | |
333 | into tables of pointers saves a bit of space. | |
334 | Using indices also keeps assembler code out of the disassembler and | |
335 | vice versa. */ | |
336 | ||
337 | struct cgen_opcode_handler | |
338 | { | |
339 | unsigned char parse, insert, extract, print; | |
340 | }; | |
341 | \f | |
342 | /* Assembler interface. | |
343 | ||
344 | The interface to the assembler is intended to be clean in the sense that | |
345 | libopcodes.a is a standalone entity and could be used with any assembler. | |
346 | Not that one would necessarily want to do that but rather that it helps | |
347 | keep a clean interface. The interface will obviously be slanted towards | |
348 | GAS, but at least it's a start. | |
349 | ??? Note that one possible user of the assembler besides GAS is GDB. | |
350 | ||
351 | Parsing is controlled by the assembler which calls | |
352 | CGEN_SYM (assemble_insn). If it can parse and build the entire insn | |
353 | it doesn't call back to the assembler. If it needs/wants to call back | |
354 | to the assembler, cgen_parse_operand_fn is called which can either | |
355 | ||
356 | - return a number to be inserted in the insn | |
357 | - return a "register" value to be inserted | |
358 | (the register might not be a register per pe) | |
359 | - queue the argument and return a marker saying the expression has been | |
360 | queued (eg: a fix-up) | |
361 | - return an error message indicating the expression wasn't recognizable | |
362 | ||
363 | The result is an error message or NULL for success. | |
364 | The parsed value is stored in the bfd_vma *. */ | |
365 | ||
366 | /* Values for indicating what the caller wants. */ | |
367 | ||
368 | enum cgen_parse_operand_type | |
369 | { | |
370 | CGEN_PARSE_OPERAND_INIT, | |
371 | CGEN_PARSE_OPERAND_INTEGER, | |
372 | CGEN_PARSE_OPERAND_ADDRESS | |
373 | }; | |
374 | ||
375 | /* Values for indicating what was parsed. */ | |
376 | ||
377 | enum cgen_parse_operand_result | |
378 | { | |
379 | CGEN_PARSE_OPERAND_RESULT_NUMBER, | |
380 | CGEN_PARSE_OPERAND_RESULT_REGISTER, | |
381 | CGEN_PARSE_OPERAND_RESULT_QUEUED, | |
382 | CGEN_PARSE_OPERAND_RESULT_ERROR | |
383 | }; | |
384 | ||
ea6a213a | 385 | #ifdef __BFD_H_SEEN__ /* Don't require bfd.h unnecessarily. */ |
252b5132 RH |
386 | typedef const char * (cgen_parse_operand_fn) |
387 | PARAMS ((CGEN_CPU_DESC, | |
388 | enum cgen_parse_operand_type, const char **, int, int, | |
389 | enum cgen_parse_operand_result *, bfd_vma *)); | |
390 | #else | |
391 | typedef const char * (cgen_parse_operand_fn) (); | |
392 | #endif | |
393 | ||
394 | /* Set the cgen_parse_operand_fn callback. */ | |
395 | ||
396 | extern void cgen_set_parse_operand_fn | |
397 | PARAMS ((CGEN_CPU_DESC, cgen_parse_operand_fn)); | |
398 | ||
399 | /* Called before trying to match a table entry with the insn. */ | |
400 | ||
401 | extern void cgen_init_parse_operand PARAMS ((CGEN_CPU_DESC)); | |
402 | \f | |
403 | /* Operand values (keywords, integers, symbols, etc.) */ | |
404 | ||
405 | /* Types of assembler elements. */ | |
406 | ||
407 | enum cgen_asm_type | |
408 | { | |
409 | CGEN_ASM_NONE, CGEN_ASM_KEYWORD, CGEN_ASM_MAX | |
410 | }; | |
411 | ||
412 | #ifndef CGEN_ARCH | |
413 | enum cgen_hw_type { CGEN_HW_MAX }; | |
414 | #endif | |
415 | ||
416 | /* List of hardware elements. */ | |
417 | ||
418 | typedef struct | |
419 | { | |
420 | char *name; | |
421 | enum cgen_hw_type type; | |
422 | /* There is currently no example where both index specs and value specs | |
423 | are required, so for now both are clumped under "asm_data". */ | |
424 | enum cgen_asm_type asm_type; | |
425 | PTR asm_data; | |
426 | #ifndef CGEN_HW_NBOOL_ATTRS | |
427 | #define CGEN_HW_NBOOL_ATTRS 1 | |
428 | #endif | |
429 | CGEN_ATTR_TYPE (CGEN_HW_NBOOL_ATTRS) attrs; | |
430 | #define CGEN_HW_ATTRS(hw) (&(hw)->attrs) | |
431 | } CGEN_HW_ENTRY; | |
432 | ||
433 | /* Return value of attribute ATTR in HW. */ | |
434 | ||
435 | #define CGEN_HW_ATTR_VALUE(hw, attr) \ | |
436 | CGEN_ATTR_VALUE ((hw), CGEN_HW_ATTRS (hw), (attr)) | |
437 | ||
438 | /* Table of hardware elements for selected mach, computed at runtime. | |
439 | enum cgen_hw_type is an index into this table (specifically `entries'). */ | |
440 | ||
441 | typedef struct { | |
442 | /* Pointer to null terminated table of all compiled in entries. */ | |
443 | const CGEN_HW_ENTRY *init_entries; | |
444 | unsigned int entry_size; /* since the attribute member is variable sized */ | |
445 | /* Array of all entries, initial and run-time added. */ | |
446 | const CGEN_HW_ENTRY **entries; | |
447 | /* Number of elements in `entries'. */ | |
448 | unsigned int num_entries; | |
449 | /* For now, xrealloc is called each time a new entry is added at runtime. | |
450 | ??? May wish to keep track of some slop to reduce the number of calls to | |
451 | xrealloc, except that there's unlikely to be many and not expected to be | |
452 | in speed critical code. */ | |
453 | } CGEN_HW_TABLE; | |
454 | ||
455 | extern const CGEN_HW_ENTRY * cgen_hw_lookup_by_name | |
456 | PARAMS ((CGEN_CPU_DESC, const char *)); | |
457 | extern const CGEN_HW_ENTRY * cgen_hw_lookup_by_num | |
9d551405 | 458 | PARAMS ((CGEN_CPU_DESC, unsigned int)); |
252b5132 RH |
459 | |
460 | /* This struct is used to describe things like register names, etc. */ | |
461 | ||
462 | typedef struct cgen_keyword_entry | |
463 | { | |
464 | /* Name (as in register name). */ | |
465 | char * name; | |
466 | ||
467 | /* Value (as in register number). | |
468 | The value cannot be -1 as that is used to indicate "not found". | |
469 | IDEA: Have "FUNCTION" attribute? [function is called to fetch value]. */ | |
470 | int value; | |
471 | ||
472 | /* Attributes. | |
473 | This should, but technically needn't, appear last. It is a variable sized | |
474 | array in that one architecture may have 1 nonbool attribute and another | |
475 | may have more. Having this last means the non-architecture specific code | |
476 | needn't care. The goal is to eventually record | |
477 | attributes in their raw form, evaluate them at run-time, and cache the | |
478 | values, so this worry will go away anyway. */ | |
479 | /* ??? Moving this last should be done by treating keywords like insn lists | |
480 | and moving the `next' fields into a CGEN_KEYWORD_LIST struct. */ | |
481 | /* FIXME: Not used yet. */ | |
482 | #ifndef CGEN_KEYWORD_NBOOL_ATTRS | |
483 | #define CGEN_KEYWORD_NBOOL_ATTRS 1 | |
484 | #endif | |
485 | CGEN_ATTR_TYPE (CGEN_KEYWORD_NBOOL_ATTRS) attrs; | |
486 | ||
487 | /* ??? Putting these here means compiled in entries can't be const. | |
488 | Not a really big deal, but something to consider. */ | |
489 | /* Next name hash table entry. */ | |
490 | struct cgen_keyword_entry *next_name; | |
491 | /* Next value hash table entry. */ | |
492 | struct cgen_keyword_entry *next_value; | |
493 | } CGEN_KEYWORD_ENTRY; | |
494 | ||
495 | /* Top level struct for describing a set of related keywords | |
496 | (e.g. register names). | |
497 | ||
498 | This struct supports run-time entry of new values, and hashed lookups. */ | |
499 | ||
500 | typedef struct cgen_keyword | |
501 | { | |
502 | /* Pointer to initial [compiled in] values. */ | |
503 | CGEN_KEYWORD_ENTRY *init_entries; | |
504 | ||
505 | /* Number of entries in `init_entries'. */ | |
506 | unsigned int num_init_entries; | |
507 | ||
508 | /* Hash table used for name lookup. */ | |
509 | CGEN_KEYWORD_ENTRY **name_hash_table; | |
510 | ||
511 | /* Hash table used for value lookup. */ | |
512 | CGEN_KEYWORD_ENTRY **value_hash_table; | |
513 | ||
514 | /* Number of entries in the hash_tables. */ | |
515 | unsigned int hash_table_size; | |
516 | ||
517 | /* Pointer to null keyword "" entry if present. */ | |
518 | const CGEN_KEYWORD_ENTRY *null_entry; | |
3e890047 GK |
519 | |
520 | /* String containing non-alphanumeric characters used | |
521 | in keywords. | |
522 | At present, the highest number of entries used is 1. */ | |
523 | char nonalpha_chars[8]; | |
252b5132 RH |
524 | } CGEN_KEYWORD; |
525 | ||
526 | /* Structure used for searching. */ | |
527 | ||
528 | typedef struct | |
529 | { | |
530 | /* Table being searched. */ | |
531 | const CGEN_KEYWORD *table; | |
532 | ||
533 | /* Specification of what is being searched for. */ | |
534 | const char *spec; | |
535 | ||
536 | /* Current index in hash table. */ | |
537 | unsigned int current_hash; | |
538 | ||
539 | /* Current element in current hash chain. */ | |
540 | CGEN_KEYWORD_ENTRY *current_entry; | |
541 | } CGEN_KEYWORD_SEARCH; | |
542 | ||
543 | /* Lookup a keyword from its name. */ | |
544 | ||
545 | const CGEN_KEYWORD_ENTRY *cgen_keyword_lookup_name | |
546 | PARAMS ((CGEN_KEYWORD *, const char *)); | |
547 | ||
548 | /* Lookup a keyword from its value. */ | |
549 | ||
550 | const CGEN_KEYWORD_ENTRY *cgen_keyword_lookup_value | |
551 | PARAMS ((CGEN_KEYWORD *, int)); | |
552 | ||
553 | /* Add a keyword. */ | |
554 | ||
555 | void cgen_keyword_add PARAMS ((CGEN_KEYWORD *, CGEN_KEYWORD_ENTRY *)); | |
556 | ||
557 | /* Keyword searching. | |
558 | This can be used to retrieve every keyword, or a subset. */ | |
559 | ||
560 | CGEN_KEYWORD_SEARCH cgen_keyword_search_init | |
561 | PARAMS ((CGEN_KEYWORD *, const char *)); | |
562 | const CGEN_KEYWORD_ENTRY *cgen_keyword_search_next | |
563 | PARAMS ((CGEN_KEYWORD_SEARCH *)); | |
564 | ||
565 | /* Operand value support routines. */ | |
566 | ||
567 | extern const char *cgen_parse_keyword | |
568 | PARAMS ((CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *)); | |
ea6a213a | 569 | #ifdef __BFD_H_SEEN__ /* Don't require bfd.h unnecessarily. */ |
252b5132 RH |
570 | extern const char *cgen_parse_signed_integer |
571 | PARAMS ((CGEN_CPU_DESC, const char **, int, long *)); | |
572 | extern const char *cgen_parse_unsigned_integer | |
573 | PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); | |
574 | extern const char *cgen_parse_address | |
575 | PARAMS ((CGEN_CPU_DESC, const char **, int, int, | |
576 | enum cgen_parse_operand_result *, bfd_vma *)); | |
577 | extern const char *cgen_validate_signed_integer | |
578 | PARAMS ((long, long, long)); | |
579 | extern const char *cgen_validate_unsigned_integer | |
580 | PARAMS ((unsigned long, unsigned long, unsigned long)); | |
581 | #endif | |
582 | \f | |
583 | /* Operand modes. */ | |
584 | ||
585 | /* ??? This duplicates the values in arch.h. Revisit. | |
586 | These however need the CGEN_ prefix [as does everything in this file]. */ | |
587 | /* ??? Targets may need to add their own modes so we may wish to move this | |
588 | to <arch>-opc.h, or add a hook. */ | |
589 | ||
590 | enum cgen_mode { | |
591 | CGEN_MODE_VOID, /* ??? rename simulator's VM to VOID? */ | |
592 | CGEN_MODE_BI, CGEN_MODE_QI, CGEN_MODE_HI, CGEN_MODE_SI, CGEN_MODE_DI, | |
593 | CGEN_MODE_UBI, CGEN_MODE_UQI, CGEN_MODE_UHI, CGEN_MODE_USI, CGEN_MODE_UDI, | |
594 | CGEN_MODE_SF, CGEN_MODE_DF, CGEN_MODE_XF, CGEN_MODE_TF, | |
595 | CGEN_MODE_TARGET_MAX, | |
596 | CGEN_MODE_INT, CGEN_MODE_UINT, | |
597 | CGEN_MODE_MAX | |
598 | }; | |
599 | ||
600 | /* FIXME: Until simulator is updated. */ | |
601 | ||
602 | #define CGEN_MODE_VM CGEN_MODE_VOID | |
603 | \f | |
604 | /* Operands. */ | |
605 | ||
606 | #ifndef CGEN_ARCH | |
607 | enum cgen_operand_type { CGEN_OPERAND_MAX }; | |
608 | #endif | |
609 | ||
610 | /* "nil" indicator for the operand instance table */ | |
611 | #define CGEN_OPERAND_NIL CGEN_OPERAND_MAX | |
612 | ||
9a2e995d GH |
613 | /* A tree of these structs represents the multi-ifield |
614 | structure of an operand's hw-index value, if it exists. */ | |
615 | ||
616 | struct cgen_ifld; | |
617 | ||
618 | typedef struct cgen_maybe_multi_ifield | |
619 | { | |
620 | int count; /* 0: indexed by single cgen_ifld (possibly null: dead entry); | |
621 | n: indexed by array of more cgen_maybe_multi_ifields. */ | |
622 | union | |
623 | { | |
4fdf0a75 AM |
624 | const PTR p; |
625 | const struct cgen_maybe_multi_ifield * multi; | |
626 | const struct cgen_ifld * leaf; | |
9a2e995d GH |
627 | } val; |
628 | } | |
629 | CGEN_MAYBE_MULTI_IFLD; | |
630 | ||
252b5132 RH |
631 | /* This struct defines each entry in the operand table. */ |
632 | ||
633 | typedef struct | |
634 | { | |
635 | /* Name as it appears in the syntax string. */ | |
636 | char *name; | |
637 | ||
638 | /* Operand type. */ | |
639 | enum cgen_operand_type type; | |
640 | ||
641 | /* The hardware element associated with this operand. */ | |
642 | enum cgen_hw_type hw_type; | |
643 | ||
644 | /* FIXME: We don't yet record ifield definitions, which we should. | |
645 | When we do it might make sense to delete start/length (since they will | |
646 | be duplicated in the ifield's definition) and replace them with a | |
647 | pointer to the ifield entry. */ | |
648 | ||
649 | /* Bit position. | |
650 | This is just a hint, and may be unused in more complex operands. | |
651 | May be unused for a modifier. */ | |
652 | unsigned char start; | |
653 | ||
654 | /* The number of bits in the operand. | |
655 | This is just a hint, and may be unused in more complex operands. | |
656 | May be unused for a modifier. */ | |
657 | unsigned char length; | |
658 | ||
9a2e995d GH |
659 | /* The (possibly-multi) ifield used as an index for this operand, if it |
660 | is indexed by a field at all. This substitutes / extends the start and | |
661 | length fields above, but unsure at this time whether they are used | |
662 | anywhere. */ | |
663 | CGEN_MAYBE_MULTI_IFLD index_fields; | |
252b5132 RH |
664 | #if 0 /* ??? Interesting idea but relocs tend to get too complicated, |
665 | and ABI dependent, for simple table lookups to work. */ | |
666 | /* Ideally this would be the internal (external?) reloc type. */ | |
667 | int reloc_type; | |
668 | #endif | |
669 | ||
670 | /* Attributes. | |
671 | This should, but technically needn't, appear last. It is a variable sized | |
672 | array in that one architecture may have 1 nonbool attribute and another | |
673 | may have more. Having this last means the non-architecture specific code | |
674 | needn't care, now or tomorrow. The goal is to eventually record | |
675 | attributes in their raw form, evaluate them at run-time, and cache the | |
676 | values, so this worry will go away anyway. */ | |
677 | #ifndef CGEN_OPERAND_NBOOL_ATTRS | |
678 | #define CGEN_OPERAND_NBOOL_ATTRS 1 | |
679 | #endif | |
680 | CGEN_ATTR_TYPE (CGEN_OPERAND_NBOOL_ATTRS) attrs; | |
681 | #define CGEN_OPERAND_ATTRS(operand) (&(operand)->attrs) | |
682 | } CGEN_OPERAND; | |
683 | ||
684 | /* Return value of attribute ATTR in OPERAND. */ | |
685 | ||
686 | #define CGEN_OPERAND_ATTR_VALUE(operand, attr) \ | |
687 | CGEN_ATTR_VALUE ((operand), CGEN_OPERAND_ATTRS (operand), (attr)) | |
688 | ||
689 | /* Table of operands for selected mach/isa, computed at runtime. | |
690 | enum cgen_operand_type is an index into this table (specifically | |
691 | `entries'). */ | |
692 | ||
693 | typedef struct { | |
694 | /* Pointer to null terminated table of all compiled in entries. */ | |
695 | const CGEN_OPERAND *init_entries; | |
696 | unsigned int entry_size; /* since the attribute member is variable sized */ | |
697 | /* Array of all entries, initial and run-time added. */ | |
698 | const CGEN_OPERAND **entries; | |
699 | /* Number of elements in `entries'. */ | |
700 | unsigned int num_entries; | |
701 | /* For now, xrealloc is called each time a new entry is added at runtime. | |
702 | ??? May wish to keep track of some slop to reduce the number of calls to | |
703 | xrealloc, except that there's unlikely to be many and not expected to be | |
704 | in speed critical code. */ | |
705 | } CGEN_OPERAND_TABLE; | |
706 | ||
707 | extern const CGEN_OPERAND * cgen_operand_lookup_by_name | |
708 | PARAMS ((CGEN_CPU_DESC, const char *)); | |
709 | extern const CGEN_OPERAND * cgen_operand_lookup_by_num | |
710 | PARAMS ((CGEN_CPU_DESC, int)); | |
711 | \f | |
712 | /* Instruction operand instances. | |
713 | ||
714 | For each instruction, a list of the hardware elements that are read and | |
715 | written are recorded. */ | |
716 | ||
717 | /* The type of the instance. */ | |
718 | ||
719 | enum cgen_opinst_type { | |
720 | /* End of table marker. */ | |
721 | CGEN_OPINST_END = 0, | |
722 | CGEN_OPINST_INPUT, CGEN_OPINST_OUTPUT | |
723 | }; | |
724 | ||
725 | typedef struct | |
726 | { | |
727 | /* Input or output indicator. */ | |
728 | enum cgen_opinst_type type; | |
729 | ||
730 | /* Name of operand. */ | |
731 | const char *name; | |
732 | ||
733 | /* The hardware element referenced. */ | |
734 | enum cgen_hw_type hw_type; | |
735 | ||
736 | /* The mode in which the operand is being used. */ | |
737 | enum cgen_mode mode; | |
738 | ||
739 | /* The operand table entry CGEN_OPERAND_NIL if there is none | |
740 | (i.e. an explicit hardware reference). */ | |
741 | enum cgen_operand_type op_type; | |
742 | ||
743 | /* If `operand' is "nil", the index (e.g. into array of registers). */ | |
744 | int index; | |
745 | ||
746 | /* Attributes. | |
747 | ??? This perhaps should be a real attribute struct but there's | |
748 | no current need, so we save a bit of space and just have a set of | |
749 | flags. The interface is such that this can easily be made attributes | |
750 | should it prove useful. */ | |
751 | unsigned int attrs; | |
752 | #define CGEN_OPINST_ATTRS(opinst) ((opinst)->attrs) | |
753 | /* Return value of attribute ATTR in OPINST. */ | |
754 | #define CGEN_OPINST_ATTR(opinst, attr) \ | |
755 | ((CGEN_OPINST_ATTRS (opinst) & (attr)) != 0) | |
756 | /* Operand is conditionally referenced (read/written). */ | |
757 | #define CGEN_OPINST_COND_REF 1 | |
758 | } CGEN_OPINST; | |
759 | \f | |
760 | /* Syntax string. | |
761 | ||
762 | Each insn format and subexpression has one of these. | |
763 | ||
764 | The syntax "string" consists of characters (n > 0 && n < 128), and operand | |
765 | values (n >= 128), and is terminated by 0. Operand values are 128 + index | |
766 | into the operand table. The operand table doesn't exist in C, per se, as | |
767 | the data is recorded in the parse/insert/extract/print switch statements. */ | |
768 | ||
f660ee8b | 769 | /* This should be at least as large as necessary for any target. */ |
e281c457 | 770 | #define CGEN_MAX_SYNTAX_ELEMENTS 48 |
f660ee8b FCE |
771 | |
772 | /* A target may know its own precise maximum. Assert that it falls below | |
773 | the above limit. */ | |
0715dc88 PM |
774 | #ifdef CGEN_ACTUAL_MAX_SYNTAX_ELEMENTS |
775 | #if CGEN_ACTUAL_MAX_SYNTAX_ELEMENTS > CGEN_MAX_SYNTAX_ELEMENTS | |
776 | #error "CGEN_ACTUAL_MAX_SYNTAX_ELEMENTS too high - enlarge CGEN_MAX_SYNTAX_ELEMENTS" | |
252b5132 | 777 | #endif |
f660ee8b FCE |
778 | #endif |
779 | ||
8c1f9e76 | 780 | typedef unsigned short CGEN_SYNTAX_CHAR_TYPE; |
252b5132 RH |
781 | |
782 | typedef struct | |
783 | { | |
0715dc88 | 784 | CGEN_SYNTAX_CHAR_TYPE syntax[CGEN_MAX_SYNTAX_ELEMENTS]; |
252b5132 RH |
785 | } CGEN_SYNTAX; |
786 | ||
787 | #define CGEN_SYNTAX_STRING(syn) (syn->syntax) | |
788 | #define CGEN_SYNTAX_CHAR_P(c) ((c) < 128) | |
8c1f9e76 | 789 | #define CGEN_SYNTAX_CHAR(c) ((unsigned char)c) |
252b5132 RH |
790 | #define CGEN_SYNTAX_FIELD(c) ((c) - 128) |
791 | #define CGEN_SYNTAX_MAKE_FIELD(c) ((c) + 128) | |
792 | ||
793 | /* ??? I can't currently think of any case where the mnemonic doesn't come | |
794 | first [and if one ever doesn't building the hash tables will be tricky]. | |
795 | However, we treat mnemonics as just another operand of the instruction. | |
796 | A value of 1 means "this is where the mnemonic appears". 1 isn't | |
797 | special other than it's a non-printable ASCII char. */ | |
798 | ||
799 | #define CGEN_SYNTAX_MNEMONIC 1 | |
800 | #define CGEN_SYNTAX_MNEMONIC_P(ch) ((ch) == CGEN_SYNTAX_MNEMONIC) | |
801 | \f | |
802 | /* Instruction fields. | |
803 | ||
804 | ??? We currently don't allow adding fields at run-time. | |
805 | Easy to fix when needed. */ | |
806 | ||
807 | typedef struct cgen_ifld { | |
808 | /* Enum of ifield. */ | |
809 | int num; | |
810 | #define CGEN_IFLD_NUM(f) ((f)->num) | |
811 | ||
812 | /* Name of the field, distinguishes it from all other fields. */ | |
813 | const char *name; | |
814 | #define CGEN_IFLD_NAME(f) ((f)->name) | |
815 | ||
816 | /* Default offset, in bits, from the start of the insn to the word | |
817 | containing the field. */ | |
818 | int word_offset; | |
819 | #define CGEN_IFLD_WORD_OFFSET(f) ((f)->word_offset) | |
820 | ||
821 | /* Default length of the word containing the field. */ | |
822 | int word_size; | |
823 | #define CGEN_IFLD_WORD_SIZE(f) ((f)->word_size) | |
824 | ||
825 | /* Default starting bit number. | |
826 | Whether lsb=0 or msb=0 is determined by CGEN_INSN_LSB0_P. */ | |
827 | int start; | |
828 | #define CGEN_IFLD_START(f) ((f)->start) | |
829 | ||
830 | /* Length of the field, in bits. */ | |
831 | int length; | |
832 | #define CGEN_IFLD_LENGTH(f) ((f)->length) | |
833 | ||
834 | #ifndef CGEN_IFLD_NBOOL_ATTRS | |
835 | #define CGEN_IFLD_NBOOL_ATTRS 1 | |
836 | #endif | |
837 | CGEN_ATTR_TYPE (CGEN_IFLD_NBOOL_ATTRS) attrs; | |
838 | #define CGEN_IFLD_ATTRS(f) (&(f)->attrs) | |
839 | } CGEN_IFLD; | |
840 | ||
841 | /* Return value of attribute ATTR in IFLD. */ | |
842 | #define CGEN_IFLD_ATTR_VALUE(ifld, attr) \ | |
843 | CGEN_ATTR_VALUE ((ifld), CGEN_IFLD_ATTRS (ifld), (attr)) | |
844 | \f | |
845 | /* Instruction data. */ | |
846 | ||
847 | /* Instruction formats. | |
848 | ||
849 | Instructions are grouped by format. Associated with an instruction is its | |
850 | format. Each insn's opcode table entry contains a format table entry. | |
851 | ??? There is usually very few formats compared with the number of insns, | |
852 | so one can reduce the size of the opcode table by recording the format table | |
853 | as a separate entity. Given that we currently don't, format table entries | |
854 | are also distinguished by their operands. This increases the size of the | |
855 | table, but reduces the number of tables. It's all minutiae anyway so it | |
856 | doesn't really matter [at this point in time]. | |
857 | ||
858 | ??? Support for variable length ISA's is wip. */ | |
859 | ||
860 | /* Accompanying each iformat description is a list of its fields. */ | |
861 | ||
862 | typedef struct { | |
863 | const CGEN_IFLD *ifld; | |
864 | #define CGEN_IFMT_IFLD_IFLD(ii) ((ii)->ifld) | |
865 | } CGEN_IFMT_IFLD; | |
866 | ||
f660ee8b FCE |
867 | /* This should be at least as large as necessary for any target. */ |
868 | #define CGEN_MAX_IFMT_OPERANDS 16 | |
869 | ||
870 | /* A target may know its own precise maximum. Assert that it falls below | |
871 | the above limit. */ | |
872 | #ifdef CGEN_ACTUAL_MAX_IFMT_OPERANDS | |
873 | #if CGEN_ACTUAL_MAX_IFMT_OPERANDS > CGEN_MAX_IFMT_OPERANDS | |
874 | #error "CGEN_ACTUAL_MAX_IFMT_OPERANDS too high - enlarge CGEN_MAX_IFMT_OPERANDS" | |
252b5132 | 875 | #endif |
f660ee8b FCE |
876 | #endif |
877 | ||
252b5132 RH |
878 | |
879 | typedef struct | |
880 | { | |
881 | /* Length that MASK and VALUE have been calculated to | |
882 | [VALUE is recorded elsewhere]. | |
883 | Normally it is base_insn_bitsize. On [V]LIW architectures where the base | |
884 | insn size may be larger than the size of an insn, this field is less than | |
885 | base_insn_bitsize. */ | |
886 | unsigned char mask_length; | |
887 | #define CGEN_IFMT_MASK_LENGTH(ifmt) ((ifmt)->mask_length) | |
888 | ||
889 | /* Total length of instruction, in bits. */ | |
890 | unsigned char length; | |
891 | #define CGEN_IFMT_LENGTH(ifmt) ((ifmt)->length) | |
892 | ||
893 | /* Mask to apply to the first MASK_LENGTH bits. | |
894 | Each insn's value is stored with the insn. | |
895 | The first step in recognizing an insn for disassembly is | |
896 | (opcode & mask) == value. */ | |
897 | CGEN_INSN_INT mask; | |
898 | #define CGEN_IFMT_MASK(ifmt) ((ifmt)->mask) | |
899 | ||
900 | /* Instruction fields. | |
901 | +1 for trailing NULL. */ | |
902 | CGEN_IFMT_IFLD iflds[CGEN_MAX_IFMT_OPERANDS + 1]; | |
903 | #define CGEN_IFMT_IFLDS(ifmt) ((ifmt)->iflds) | |
904 | } CGEN_IFMT; | |
905 | ||
906 | /* Instruction values. */ | |
907 | ||
908 | typedef struct | |
909 | { | |
910 | /* The opcode portion of the base insn. */ | |
911 | CGEN_INSN_INT base_value; | |
912 | ||
913 | #ifdef CGEN_MAX_EXTRA_OPCODE_OPERANDS | |
914 | /* Extra opcode values beyond base_value. */ | |
915 | unsigned long ifield_values[CGEN_MAX_EXTRA_OPCODE_OPERANDS]; | |
916 | #endif | |
917 | } CGEN_IVALUE; | |
918 | ||
919 | /* Instruction opcode table. | |
920 | This contains the syntax and format data of an instruction. */ | |
921 | ||
922 | /* ??? Some ports already have an opcode table yet still need to use the rest | |
923 | of what cgen_insn has. Plus keeping the opcode data with the operand | |
924 | instance data can create a pretty big file. So we keep them separately. | |
925 | Not sure this is a good idea in the long run. */ | |
926 | ||
927 | typedef struct | |
928 | { | |
929 | /* Indices into parse/insert/extract/print handler tables. */ | |
930 | struct cgen_opcode_handler handlers; | |
931 | #define CGEN_OPCODE_HANDLERS(opc) (& (opc)->handlers) | |
932 | ||
933 | /* Syntax string. */ | |
934 | CGEN_SYNTAX syntax; | |
935 | #define CGEN_OPCODE_SYNTAX(opc) (& (opc)->syntax) | |
936 | ||
937 | /* Format entry. */ | |
938 | const CGEN_IFMT *format; | |
939 | #define CGEN_OPCODE_FORMAT(opc) ((opc)->format) | |
940 | #define CGEN_OPCODE_MASK_BITSIZE(opc) CGEN_IFMT_MASK_LENGTH (CGEN_OPCODE_FORMAT (opc)) | |
941 | #define CGEN_OPCODE_BITSIZE(opc) CGEN_IFMT_LENGTH (CGEN_OPCODE_FORMAT (opc)) | |
942 | #define CGEN_OPCODE_IFLDS(opc) CGEN_IFMT_IFLDS (CGEN_OPCODE_FORMAT (opc)) | |
943 | ||
944 | /* Instruction opcode value. */ | |
945 | CGEN_IVALUE value; | |
946 | #define CGEN_OPCODE_VALUE(opc) (& (opc)->value) | |
947 | #define CGEN_OPCODE_BASE_VALUE(opc) (CGEN_OPCODE_VALUE (opc)->base_value) | |
948 | #define CGEN_OPCODE_BASE_MASK(opc) CGEN_IFMT_MASK (CGEN_OPCODE_FORMAT (opc)) | |
949 | } CGEN_OPCODE; | |
950 | ||
951 | /* Instruction attributes. | |
952 | This is made a published type as applications can cache a pointer to | |
953 | the attributes for speed. */ | |
954 | ||
955 | #ifndef CGEN_INSN_NBOOL_ATTRS | |
956 | #define CGEN_INSN_NBOOL_ATTRS 1 | |
957 | #endif | |
958 | typedef CGEN_ATTR_TYPE (CGEN_INSN_NBOOL_ATTRS) CGEN_INSN_ATTR_TYPE; | |
959 | ||
960 | /* Enum of architecture independent attributes. */ | |
961 | ||
962 | #ifndef CGEN_ARCH | |
963 | /* ??? Numbers here are recorded in two places. */ | |
964 | typedef enum cgen_insn_attr { | |
965 | CGEN_INSN_ALIAS = 0 | |
966 | } CGEN_INSN_ATTR; | |
967 | #endif | |
968 | ||
969 | /* This struct defines each entry in the instruction table. */ | |
970 | ||
971 | typedef struct | |
972 | { | |
973 | /* Each real instruction is enumerated. */ | |
974 | /* ??? This may go away in time. */ | |
975 | int num; | |
976 | #define CGEN_INSN_NUM(insn) ((insn)->base->num) | |
977 | ||
978 | /* Name of entry (that distinguishes it from all other entries). */ | |
979 | /* ??? If mnemonics have operands, try to print full mnemonic. */ | |
980 | const char *name; | |
981 | #define CGEN_INSN_NAME(insn) ((insn)->base->name) | |
982 | ||
983 | /* Mnemonic. This is used when parsing and printing the insn. | |
984 | In the case of insns that have operands on the mnemonics, this is | |
985 | only the constant part. E.g. for conditional execution of an `add' insn, | |
986 | where the full mnemonic is addeq, addne, etc., and the condition is | |
987 | treated as an operand, this is only "add". */ | |
988 | const char *mnemonic; | |
989 | #define CGEN_INSN_MNEMONIC(insn) ((insn)->base->mnemonic) | |
990 | ||
991 | /* Total length of instruction, in bits. */ | |
992 | int bitsize; | |
993 | #define CGEN_INSN_BITSIZE(insn) ((insn)->base->bitsize) | |
994 | ||
995 | #if 0 /* ??? Disabled for now as there is a problem with embedded newlines | |
996 | and the table is already pretty big. Should perhaps be moved | |
997 | to a file of its own. */ | |
998 | /* Semantics, as RTL. */ | |
999 | /* ??? Plain text or bytecodes? */ | |
1000 | /* ??? Note that the operand instance table could be computed at run-time | |
1001 | if we parse this and cache the results. Something to eventually do. */ | |
1002 | const char *rtx; | |
1003 | #define CGEN_INSN_RTX(insn) ((insn)->base->rtx) | |
1004 | #endif | |
1005 | ||
1006 | /* Attributes. | |
1007 | This must appear last. It is a variable sized array in that one | |
1008 | architecture may have 1 nonbool attribute and another may have more. | |
1009 | Having this last means the non-architecture specific code needn't | |
1010 | care. The goal is to eventually record attributes in their raw form, | |
1011 | evaluate them at run-time, and cache the values, so this worry will go | |
1012 | away anyway. */ | |
1013 | CGEN_INSN_ATTR_TYPE attrs; | |
1014 | #define CGEN_INSN_ATTRS(insn) (&(insn)->base->attrs) | |
1015 | /* Return value of attribute ATTR in INSN. */ | |
1016 | #define CGEN_INSN_ATTR_VALUE(insn, attr) \ | |
1017 | CGEN_ATTR_VALUE ((insn), CGEN_INSN_ATTRS (insn), (attr)) | |
1018 | } CGEN_IBASE; | |
1019 | ||
1020 | /* Return non-zero if INSN is the "invalid" insn marker. */ | |
1021 | ||
1022 | #define CGEN_INSN_INVALID_P(insn) (CGEN_INSN_MNEMONIC (insn) == 0) | |
1023 | ||
1024 | /* Main struct contain instruction information. | |
1025 | BASE is always present, the rest is present only if asked for. */ | |
1026 | ||
1027 | struct cgen_insn | |
1028 | { | |
1029 | /* ??? May be of use to put a type indicator here. | |
1030 | Then this struct could different info for different classes of insns. */ | |
1031 | /* ??? A speedup can be had by moving `base' into this struct. | |
1032 | Maybe later. */ | |
1033 | const CGEN_IBASE *base; | |
1034 | const CGEN_OPCODE *opcode; | |
1035 | const CGEN_OPINST *opinst; | |
3d5c4f10 JJ |
1036 | |
1037 | /* Regex to disambiguate overloaded opcodes */ | |
1038 | void *rx; | |
1039 | #define CGEN_INSN_RX(insn) ((insn)->rx) | |
1040 | #define CGEN_MAX_RX_ELEMENTS (CGEN_MAX_SYNTAX_ELEMENTS * 5) | |
252b5132 RH |
1041 | }; |
1042 | ||
1043 | /* Instruction lists. | |
1044 | This is used for adding new entries and for creating the hash lists. */ | |
1045 | ||
1046 | typedef struct cgen_insn_list | |
1047 | { | |
1048 | struct cgen_insn_list *next; | |
1049 | const CGEN_INSN *insn; | |
1050 | } CGEN_INSN_LIST; | |
1051 | ||
1052 | /* Table of instructions. */ | |
1053 | ||
1054 | typedef struct | |
1055 | { | |
1056 | const CGEN_INSN *init_entries; | |
1057 | unsigned int entry_size; /* since the attribute member is variable sized */ | |
1058 | unsigned int num_init_entries; | |
1059 | CGEN_INSN_LIST *new_entries; | |
1060 | } CGEN_INSN_TABLE; | |
1061 | ||
1062 | /* Return number of instructions. This includes any added at run-time. */ | |
1063 | ||
1064 | extern int cgen_insn_count PARAMS ((CGEN_CPU_DESC)); | |
1065 | extern int cgen_macro_insn_count PARAMS ((CGEN_CPU_DESC)); | |
1066 | ||
1067 | /* Macros to access the other insn elements not recorded in CGEN_IBASE. */ | |
1068 | ||
1069 | /* Fetch INSN's operand instance table. */ | |
1070 | /* ??? Doesn't handle insns added at runtime. */ | |
1071 | #define CGEN_INSN_OPERANDS(insn) ((insn)->opinst) | |
1072 | ||
1073 | /* Return INSN's opcode table entry. */ | |
1074 | #define CGEN_INSN_OPCODE(insn) ((insn)->opcode) | |
1075 | ||
1076 | /* Return INSN's handler data. */ | |
1077 | #define CGEN_INSN_HANDLERS(insn) CGEN_OPCODE_HANDLERS (CGEN_INSN_OPCODE (insn)) | |
1078 | ||
1079 | /* Return INSN's syntax. */ | |
1080 | #define CGEN_INSN_SYNTAX(insn) CGEN_OPCODE_SYNTAX (CGEN_INSN_OPCODE (insn)) | |
1081 | ||
1082 | /* Return size of base mask in bits. */ | |
1083 | #define CGEN_INSN_MASK_BITSIZE(insn) \ | |
1084 | CGEN_OPCODE_MASK_BITSIZE (CGEN_INSN_OPCODE (insn)) | |
1085 | ||
1086 | /* Return mask of base part of INSN. */ | |
1087 | #define CGEN_INSN_BASE_MASK(insn) \ | |
1088 | CGEN_OPCODE_BASE_MASK (CGEN_INSN_OPCODE (insn)) | |
1089 | ||
1090 | /* Return value of base part of INSN. */ | |
1091 | #define CGEN_INSN_BASE_VALUE(insn) \ | |
1092 | CGEN_OPCODE_BASE_VALUE (CGEN_INSN_OPCODE (insn)) | |
e8da1bf1 DE |
1093 | |
1094 | /* Standard way to test whether INSN is supported by MACH. | |
1095 | MACH is one of enum mach_attr. | |
1096 | The "|1" is because the base mach is always selected. */ | |
1097 | #define CGEN_INSN_MACH_HAS_P(insn, mach) \ | |
1098 | ((CGEN_INSN_ATTR_VALUE ((insn), CGEN_INSN_MACH) & ((1 << (mach)) | 1)) != 0) | |
252b5132 RH |
1099 | \f |
1100 | /* Macro instructions. | |
1101 | Macro insns aren't real insns, they map to one or more real insns. | |
1102 | E.g. An architecture's "nop" insn may actually be an "mv r0,r0" or | |
1103 | some such. | |
1104 | ||
1105 | Macro insns can expand to nothing (e.g. a nop that is optimized away). | |
1106 | This is useful in multi-insn macros that build a constant in a register. | |
1107 | Of course this isn't the default behaviour and must be explicitly enabled. | |
1108 | ||
1109 | Assembly of macro-insns is relatively straightforward. Disassembly isn't. | |
1110 | However, disassembly of at least some kinds of macro insns is important | |
1111 | in order that the disassembled code preserve the readability of the original | |
1112 | insn. What is attempted here is to disassemble all "simple" macro-insns, | |
1113 | where "simple" is currently defined to mean "expands to one real insn". | |
1114 | ||
1115 | Simple macro-insns are handled specially. They are emitted as ALIAS's | |
1116 | of real insns. This simplifies their handling since there's usually more | |
1117 | of them than any other kind of macro-insn, and proper disassembly of them | |
1118 | falls out for free. */ | |
1119 | ||
1120 | /* For each macro-insn there may be multiple expansion possibilities, | |
1121 | depending on the arguments. This structure is accessed via the `data' | |
1122 | member of CGEN_INSN. */ | |
1123 | ||
1124 | typedef struct cgen_minsn_expansion { | |
1125 | /* Function to do the expansion. | |
1126 | If the expansion fails (e.g. "no match") NULL is returned. | |
1127 | Space for the expansion is obtained with malloc. | |
1128 | It is up to the caller to free it. */ | |
1129 | const char * (* fn) PARAMS ((const struct cgen_minsn_expansion *, | |
1130 | const char *, const char **, int *, | |
1131 | CGEN_OPERAND **)); | |
1132 | #define CGEN_MIEXPN_FN(ex) ((ex)->fn) | |
1133 | ||
1134 | /* Instruction(s) the macro expands to. | |
1135 | The format of STR is defined by FN. | |
1136 | It is typically the assembly code of the real insn, but it could also be | |
1137 | the original Scheme expression or a tokenized form of it (with FN being | |
1138 | an appropriate interpreter). */ | |
1139 | const char * str; | |
1140 | #define CGEN_MIEXPN_STR(ex) ((ex)->str) | |
1141 | } CGEN_MINSN_EXPANSION; | |
1142 | ||
1143 | /* Normal expander. | |
1144 | When supported, this function will convert the input string to another | |
1145 | string and the parser will be invoked recursively. The output string | |
1146 | may contain further macro invocations. */ | |
1147 | ||
1148 | extern const char * cgen_expand_macro_insn | |
1149 | PARAMS ((CGEN_CPU_DESC, const struct cgen_minsn_expansion *, | |
1150 | const char *, const char **, int *, CGEN_OPERAND **)); | |
1151 | \f | |
1152 | /* The assembler insn table is hashed based on some function of the mnemonic | |
1153 | (the actually hashing done is up to the target, but we provide a few | |
1154 | examples like the first letter or a function of the entire mnemonic). */ | |
1155 | ||
1156 | extern CGEN_INSN_LIST * cgen_asm_lookup_insn | |
1157 | PARAMS ((CGEN_CPU_DESC, const char *)); | |
1158 | #define CGEN_ASM_LOOKUP_INSN(cd, string) cgen_asm_lookup_insn ((cd), (string)) | |
1159 | #define CGEN_ASM_NEXT_INSN(insn) ((insn)->next) | |
1160 | ||
1161 | /* The disassembler insn table is hashed based on some function of machine | |
1162 | instruction (the actually hashing done is up to the target). */ | |
1163 | ||
1164 | extern CGEN_INSN_LIST * cgen_dis_lookup_insn | |
1165 | PARAMS ((CGEN_CPU_DESC, const char *, CGEN_INSN_INT)); | |
1166 | /* FIXME: delete these two */ | |
1167 | #define CGEN_DIS_LOOKUP_INSN(cd, buf, value) cgen_dis_lookup_insn ((cd), (buf), (value)) | |
1168 | #define CGEN_DIS_NEXT_INSN(insn) ((insn)->next) | |
1169 | \f | |
1170 | /* The CPU description. | |
1171 | A copy of this is created when the cpu table is "opened". | |
1172 | All global state information is recorded here. | |
1173 | Access macros are provided for "public" members. */ | |
1174 | ||
1175 | typedef struct cgen_cpu_desc | |
1176 | { | |
1177 | /* Bitmap of selected machine(s) (a la BFD machine number). */ | |
1178 | int machs; | |
1179 | ||
1180 | /* Bitmap of selected isa(s). | |
1181 | ??? Simultaneous multiple isas might not make sense, but it's not (yet) | |
1182 | precluded. */ | |
1183 | int isas; | |
1184 | ||
1185 | /* Current endian. */ | |
1186 | enum cgen_endian endian; | |
1187 | #define CGEN_CPU_ENDIAN(cd) ((cd)->endian) | |
1188 | ||
1189 | /* Current insn endian. */ | |
1190 | enum cgen_endian insn_endian; | |
1191 | #define CGEN_CPU_INSN_ENDIAN(cd) ((cd)->insn_endian) | |
1192 | ||
1193 | /* Word size (in bits). */ | |
1194 | /* ??? Or maybe maximum word size - might we ever need to allow a cpu table | |
1195 | to be opened for both sparc32/sparc64? | |
1196 | ??? Another alternative is to create a table of selected machs and | |
1197 | lazily fetch the data from there. */ | |
1198 | unsigned int word_bitsize; | |
1199 | ||
81f6038f FCE |
1200 | /* Instruction chunk size (in bits), for purposes of endianness |
1201 | conversion. */ | |
1202 | unsigned int insn_chunk_bitsize; | |
1203 | ||
252b5132 RH |
1204 | /* Indicator if sizes are unknown. |
1205 | This is used by default_insn_bitsize,base_insn_bitsize if there is a | |
1206 | difference between the selected isa's. */ | |
1207 | #define CGEN_SIZE_UNKNOWN 65535 | |
1208 | ||
1209 | /* Default instruction size (in bits). | |
1210 | This is used by the assembler when it encounters an unknown insn. */ | |
1211 | unsigned int default_insn_bitsize; | |
1212 | ||
1213 | /* Base instruction size (in bits). | |
1214 | For non-LIW cpus this is generally the length of the smallest insn. | |
1215 | For LIW cpus its wip (work-in-progress). For the m32r its 32. */ | |
1216 | unsigned int base_insn_bitsize; | |
1217 | ||
1218 | /* Minimum/maximum instruction size (in bits). */ | |
1219 | unsigned int min_insn_bitsize; | |
1220 | unsigned int max_insn_bitsize; | |
1221 | ||
1222 | /* Instruction set variants. */ | |
1223 | const CGEN_ISA *isa_table; | |
1224 | ||
1225 | /* Machine variants. */ | |
1226 | const CGEN_MACH *mach_table; | |
1227 | ||
1228 | /* Hardware elements. */ | |
1229 | CGEN_HW_TABLE hw_table; | |
1230 | ||
1231 | /* Instruction fields. */ | |
1232 | const CGEN_IFLD *ifld_table; | |
1233 | ||
1234 | /* Operands. */ | |
1235 | CGEN_OPERAND_TABLE operand_table; | |
1236 | ||
1237 | /* Main instruction table. */ | |
1238 | CGEN_INSN_TABLE insn_table; | |
1239 | #define CGEN_CPU_INSN_TABLE(cd) (& (cd)->insn_table) | |
1240 | ||
1241 | /* Macro instructions are defined separately and are combined with real | |
1242 | insns during hash table computation. */ | |
1243 | CGEN_INSN_TABLE macro_insn_table; | |
1244 | ||
1245 | /* Copy of CGEN_INT_INSN_P. */ | |
1246 | int int_insn_p; | |
1247 | ||
1248 | /* Called to rebuild the tables after something has changed. */ | |
1249 | void (*rebuild_tables) PARAMS ((CGEN_CPU_DESC)); | |
1250 | ||
1251 | /* Operand parser callback. */ | |
1252 | cgen_parse_operand_fn * parse_operand_fn; | |
1253 | ||
1254 | /* Parse/insert/extract/print cover fns for operands. */ | |
1255 | const char * (*parse_operand) | |
1256 | PARAMS ((CGEN_CPU_DESC, int opindex_, const char **, | |
1257 | CGEN_FIELDS *fields_)); | |
ea6a213a | 1258 | #ifdef __BFD_H_SEEN__ |
252b5132 RH |
1259 | const char * (*insert_operand) |
1260 | PARAMS ((CGEN_CPU_DESC, int opindex_, CGEN_FIELDS *fields_, | |
1261 | CGEN_INSN_BYTES_PTR, bfd_vma pc_)); | |
1262 | int (*extract_operand) | |
1263 | PARAMS ((CGEN_CPU_DESC, int opindex_, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, | |
1264 | CGEN_FIELDS *fields_, bfd_vma pc_)); | |
1265 | void (*print_operand) | |
1266 | PARAMS ((CGEN_CPU_DESC, int opindex_, PTR info_, CGEN_FIELDS * fields_, | |
1267 | void const *attrs_, bfd_vma pc_, int length_)); | |
1268 | #else | |
1269 | const char * (*insert_operand) (); | |
1270 | int (*extract_operand) (); | |
1271 | void (*print_operand) (); | |
1272 | #endif | |
1273 | #define CGEN_CPU_PARSE_OPERAND(cd) ((cd)->parse_operand) | |
1274 | #define CGEN_CPU_INSERT_OPERAND(cd) ((cd)->insert_operand) | |
1275 | #define CGEN_CPU_EXTRACT_OPERAND(cd) ((cd)->extract_operand) | |
1276 | #define CGEN_CPU_PRINT_OPERAND(cd) ((cd)->print_operand) | |
1277 | ||
1278 | /* Size of CGEN_FIELDS struct. */ | |
1279 | unsigned int sizeof_fields; | |
1280 | #define CGEN_CPU_SIZEOF_FIELDS(cd) ((cd)->sizeof_fields) | |
1281 | ||
1282 | /* Set the bitsize field. */ | |
1283 | void (*set_fields_bitsize) PARAMS ((CGEN_FIELDS *fields_, int size_)); | |
1284 | #define CGEN_CPU_SET_FIELDS_BITSIZE(cd) ((cd)->set_fields_bitsize) | |
1285 | ||
1286 | /* CGEN_FIELDS accessors. */ | |
1287 | int (*get_int_operand) | |
1288 | PARAMS ((CGEN_CPU_DESC, int opindex_, const CGEN_FIELDS *fields_)); | |
1289 | void (*set_int_operand) | |
1290 | PARAMS ((CGEN_CPU_DESC, int opindex_, CGEN_FIELDS *fields_, int value_)); | |
ea6a213a | 1291 | #ifdef __BFD_H_SEEN__ |
252b5132 RH |
1292 | bfd_vma (*get_vma_operand) |
1293 | PARAMS ((CGEN_CPU_DESC, int opindex_, const CGEN_FIELDS *fields_)); | |
1294 | void (*set_vma_operand) | |
1295 | PARAMS ((CGEN_CPU_DESC, int opindex_, CGEN_FIELDS *fields_, bfd_vma value_)); | |
1296 | #else | |
1297 | long (*get_vma_operand) (); | |
1298 | void (*set_vma_operand) (); | |
1299 | #endif | |
1300 | #define CGEN_CPU_GET_INT_OPERAND(cd) ((cd)->get_int_operand) | |
1301 | #define CGEN_CPU_SET_INT_OPERAND(cd) ((cd)->set_int_operand) | |
1302 | #define CGEN_CPU_GET_VMA_OPERAND(cd) ((cd)->get_vma_operand) | |
1303 | #define CGEN_CPU_SET_VMA_OPERAND(cd) ((cd)->set_vma_operand) | |
1304 | ||
1305 | /* Instruction parse/insert/extract/print handlers. */ | |
1306 | /* FIXME: make these types uppercase. */ | |
1307 | cgen_parse_fn * const *parse_handlers; | |
1308 | cgen_insert_fn * const *insert_handlers; | |
1309 | cgen_extract_fn * const *extract_handlers; | |
1310 | cgen_print_fn * const *print_handlers; | |
1311 | #define CGEN_PARSE_FN(cd, insn) (cd->parse_handlers[(insn)->opcode->handlers.parse]) | |
1312 | #define CGEN_INSERT_FN(cd, insn) (cd->insert_handlers[(insn)->opcode->handlers.insert]) | |
1313 | #define CGEN_EXTRACT_FN(cd, insn) (cd->extract_handlers[(insn)->opcode->handlers.extract]) | |
1314 | #define CGEN_PRINT_FN(cd, insn) (cd->print_handlers[(insn)->opcode->handlers.print]) | |
1315 | ||
1316 | /* Return non-zero if insn should be added to hash table. */ | |
1317 | int (* asm_hash_p) PARAMS ((const CGEN_INSN *)); | |
1318 | ||
1319 | /* Assembler hash function. */ | |
1320 | unsigned int (* asm_hash) PARAMS ((const char *)); | |
1321 | ||
1322 | /* Number of entries in assembler hash table. */ | |
1323 | unsigned int asm_hash_size; | |
1324 | ||
1325 | /* Return non-zero if insn should be added to hash table. */ | |
1326 | int (* dis_hash_p) PARAMS ((const CGEN_INSN *)); | |
1327 | ||
1328 | /* Disassembler hash function. */ | |
1329 | unsigned int (* dis_hash) PARAMS ((const char *, CGEN_INSN_INT)); | |
1330 | ||
1331 | /* Number of entries in disassembler hash table. */ | |
1332 | unsigned int dis_hash_size; | |
1333 | ||
1334 | /* Assembler instruction hash table. */ | |
1335 | CGEN_INSN_LIST **asm_hash_table; | |
1336 | CGEN_INSN_LIST *asm_hash_table_entries; | |
1337 | ||
1338 | /* Disassembler instruction hash table. */ | |
1339 | CGEN_INSN_LIST **dis_hash_table; | |
1340 | CGEN_INSN_LIST *dis_hash_table_entries; | |
60f036a2 | 1341 | |
68e324a2 NC |
1342 | /* This field could be turned into a bitfield if room for other flags is needed. */ |
1343 | unsigned int signed_overflow_ok_p; | |
60f036a2 | 1344 | |
252b5132 RH |
1345 | } CGEN_CPU_TABLE; |
1346 | ||
1347 | /* wip */ | |
1348 | #ifndef CGEN_WORD_ENDIAN | |
1349 | #define CGEN_WORD_ENDIAN(cd) CGEN_CPU_ENDIAN (cd) | |
1350 | #endif | |
1351 | #ifndef CGEN_INSN_WORD_ENDIAN | |
1352 | #define CGEN_INSN_WORD_ENDIAN(cd) CGEN_CPU_INSN_ENDIAN (cd) | |
1353 | #endif | |
1354 | \f | |
1355 | /* Prototypes of major functions. */ | |
1356 | /* FIXME: Move more CGEN_SYM-defined functions into CGEN_CPU_DESC. | |
1357 | Not the init fns though, as that would drag in things that mightn't be | |
1358 | used and might not even exist. */ | |
1359 | ||
1360 | /* Argument types to cpu_open. */ | |
1361 | ||
1362 | enum cgen_cpu_open_arg { | |
1363 | CGEN_CPU_OPEN_END, | |
1364 | /* Select instruction set(s), arg is bitmap or 0 meaning "unspecified". */ | |
1365 | CGEN_CPU_OPEN_ISAS, | |
1366 | /* Select machine(s), arg is bitmap or 0 meaning "unspecified". */ | |
1367 | CGEN_CPU_OPEN_MACHS, | |
1368 | /* Select machine, arg is mach's bfd name. | |
1369 | Multiple machines can be specified by repeated use. */ | |
1370 | CGEN_CPU_OPEN_BFDMACH, | |
1371 | /* Select endian, arg is CGEN_ENDIAN_*. */ | |
1372 | CGEN_CPU_OPEN_ENDIAN | |
1373 | }; | |
1374 | ||
1375 | /* Open a cpu descriptor table for use. | |
1376 | ??? We only support ISO C stdargs here, not K&R. | |
1377 | Laziness, plus experiment to see if anything requires K&R - eventually | |
1378 | K&R will no longer be supported - e.g. GDB is currently trying this. */ | |
1379 | ||
1380 | extern CGEN_CPU_DESC CGEN_SYM (cpu_open) (enum cgen_cpu_open_arg, ...); | |
1381 | ||
1382 | /* Cover fn to handle simple case. */ | |
1383 | ||
1384 | extern CGEN_CPU_DESC CGEN_SYM (cpu_open_1) PARAMS ((const char *mach_name_, | |
1385 | enum cgen_endian endian_)); | |
1386 | ||
1387 | /* Close it. */ | |
1388 | ||
1389 | extern void CGEN_SYM (cpu_close) PARAMS ((CGEN_CPU_DESC)); | |
1390 | ||
1391 | /* Initialize the opcode table for use. | |
1392 | Called by init_asm/init_dis. */ | |
1393 | ||
1394 | extern void CGEN_SYM (init_opcode_table) PARAMS ((CGEN_CPU_DESC cd_)); | |
1395 | ||
3d5c4f10 JJ |
1396 | /* build the insn selection regex. |
1397 | called by init_opcode_table */ | |
1398 | ||
1399 | extern char * CGEN_SYM(build_insn_regex) PARAMS ((CGEN_INSN *insn_)); | |
1400 | ||
252b5132 RH |
1401 | /* Initialize the ibld table for use. |
1402 | Called by init_asm/init_dis. */ | |
1403 | ||
1404 | extern void CGEN_SYM (init_ibld_table) PARAMS ((CGEN_CPU_DESC cd_)); | |
1405 | ||
1406 | /* Initialize an cpu table for assembler or disassembler use. | |
1407 | These must be called immediately after cpu_open. */ | |
1408 | ||
1409 | extern void CGEN_SYM (init_asm) PARAMS ((CGEN_CPU_DESC)); | |
1410 | extern void CGEN_SYM (init_dis) PARAMS ((CGEN_CPU_DESC)); | |
1411 | ||
1412 | /* Initialize the operand instance table for use. */ | |
1413 | ||
1414 | extern void CGEN_SYM (init_opinst_table) PARAMS ((CGEN_CPU_DESC cd_)); | |
1415 | ||
1416 | /* Assemble an instruction. */ | |
1417 | ||
1418 | extern const CGEN_INSN * CGEN_SYM (assemble_insn) | |
1419 | PARAMS ((CGEN_CPU_DESC, const char *, CGEN_FIELDS *, | |
1420 | CGEN_INSN_BYTES_PTR, char **)); | |
1421 | ||
1422 | extern const CGEN_KEYWORD CGEN_SYM (operand_mach); | |
1423 | extern int CGEN_SYM (get_mach) PARAMS ((const char *)); | |
1424 | ||
1425 | /* Operand index computation. */ | |
1426 | extern const CGEN_INSN * cgen_lookup_insn | |
1427 | PARAMS ((CGEN_CPU_DESC, const CGEN_INSN * insn_, | |
1428 | CGEN_INSN_INT int_value_, unsigned char *bytes_value_, | |
1429 | int length_, CGEN_FIELDS *fields_, int alias_p_)); | |
1430 | extern void cgen_get_insn_operands | |
1431 | PARAMS ((CGEN_CPU_DESC, const CGEN_INSN * insn_, | |
1432 | const CGEN_FIELDS *fields_, int *indices_)); | |
1433 | extern const CGEN_INSN * cgen_lookup_get_insn_operands | |
1434 | PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *insn_, | |
1435 | CGEN_INSN_INT int_value_, unsigned char *bytes_value_, | |
1436 | int length_, int *indices_, CGEN_FIELDS *fields_)); | |
1437 | ||
1438 | /* Cover fns to bfd_get/set. */ | |
1439 | ||
1440 | extern CGEN_INSN_INT cgen_get_insn_value | |
1441 | PARAMS ((CGEN_CPU_DESC, unsigned char *, int)); | |
1442 | extern void cgen_put_insn_value | |
1443 | PARAMS ((CGEN_CPU_DESC, unsigned char *, int, CGEN_INSN_INT)); | |
1444 | ||
1445 | /* Read in a cpu description file. | |
1446 | ??? For future concerns, including adding instructions to the assembler/ | |
1447 | disassembler at run-time. */ | |
1448 | ||
1449 | extern const char * cgen_read_cpu_file | |
1450 | PARAMS ((CGEN_CPU_DESC, const char * filename_)); | |
1451 | ||
60f036a2 AH |
1452 | /* Allow signed overflow of instruction fields. */ |
1453 | extern void cgen_set_signed_overflow_ok PARAMS ((CGEN_CPU_DESC)); | |
1454 | ||
1455 | /* Generate an error message if a signed field in an instruction overflows. */ | |
1456 | extern void cgen_clear_signed_overflow_ok PARAMS ((CGEN_CPU_DESC)); | |
1457 | ||
1458 | /* Will an error message be generated if a signed field in an instruction overflows ? */ | |
1459 | extern unsigned int cgen_signed_overflow_ok_p PARAMS ((CGEN_CPU_DESC)); | |
1460 | ||
252b5132 | 1461 | #endif /* CGEN_H */ |