Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-arc.c -- Assembler for the ARC |
9f1838ed | 2 | Copyright 1994, 1995, 1997, 1999, 2000, 2001, 2002 |
f7e42eb4 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Doug Evans (dje@cygnus.com). |
5 | ||
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS 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, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS 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 | |
19203624 KH |
19 | along with GAS; see the file COPYING. If not, write to the Free |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
252b5132 RH |
22 | |
23 | #include <stdio.h> | |
0d2bcfaf | 24 | #include "libiberty.h" |
252b5132 | 25 | #include "as.h" |
a161fe53 | 26 | #include "struc-symbol.h" |
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "subsegs.h" |
29 | #include "opcode/arc.h" | |
0d2bcfaf | 30 | #include "../opcodes/arc-ext.h" |
252b5132 | 31 | #include "elf/arc.h" |
bcee8eb8 | 32 | #include "dwarf2dbg.h" |
252b5132 RH |
33 | |
34 | extern int arc_get_mach PARAMS ((char *)); | |
0d2bcfaf NC |
35 | extern int arc_operand_type PARAMS ((int)); |
36 | extern int arc_insn_not_jl PARAMS ((arc_insn)); | |
37 | extern int arc_limm_fixup_adjust PARAMS ((arc_insn)); | |
38 | extern int arc_get_noshortcut_flag PARAMS ((void)); | |
39 | extern int arc_set_ext_seg PARAMS ((void)); | |
19203624 | 40 | extern void arc_code_symbol PARAMS ((expressionS *)); |
252b5132 RH |
41 | |
42 | static arc_insn arc_insert_operand PARAMS ((arc_insn, | |
43 | const struct arc_operand *, int, | |
44 | const struct arc_operand_value *, | |
45 | offsetT, char *, unsigned int)); | |
46 | static void arc_common PARAMS ((int)); | |
0d2bcfaf NC |
47 | static void arc_extinst PARAMS ((int)); |
48 | static void arc_extoper PARAMS ((int)); | |
49 | static void arc_option PARAMS ((int)); | |
89b57c9a | 50 | static int get_arc_exp_reloc_type PARAMS ((int, int, expressionS *, |
252b5132 RH |
51 | expressionS *)); |
52 | ||
89b57c9a NC |
53 | static void init_opcode_tables PARAMS ((int)); |
54 | ||
0d2bcfaf NC |
55 | const struct suffix_classes { |
56 | char *name; | |
57 | int len; | |
58 | } suffixclass[] = { | |
59 | { "SUFFIX_COND|SUFFIX_FLAG",23 }, | |
60 | { "SUFFIX_FLAG", 11 }, | |
61 | { "SUFFIX_COND", 11 }, | |
62 | { "SUFFIX_NONE", 11 } | |
63 | }; | |
64 | ||
bfb32b52 | 65 | #define MAXSUFFIXCLASS (sizeof (suffixclass) / sizeof (struct suffix_classes)) |
0d2bcfaf NC |
66 | |
67 | const struct syntax_classes { | |
68 | char *name; | |
69 | int len; | |
70 | int class; | |
71 | } syntaxclass[] = { | |
72 | { "SYNTAX_3OP|OP1_MUST_BE_IMM", 26, SYNTAX_3OP|OP1_MUST_BE_IMM|SYNTAX_VALID }, | |
73 | { "OP1_MUST_BE_IMM|SYNTAX_3OP", 26, OP1_MUST_BE_IMM|SYNTAX_3OP|SYNTAX_VALID }, | |
74 | { "SYNTAX_2OP|OP1_IMM_IMPLIED", 26, SYNTAX_2OP|OP1_IMM_IMPLIED|SYNTAX_VALID }, | |
75 | { "OP1_IMM_IMPLIED|SYNTAX_2OP", 26, OP1_IMM_IMPLIED|SYNTAX_2OP|SYNTAX_VALID }, | |
76 | { "SYNTAX_3OP", 10, SYNTAX_3OP|SYNTAX_VALID }, | |
77 | { "SYNTAX_2OP", 10, SYNTAX_2OP|SYNTAX_VALID } | |
78 | }; | |
79 | ||
bfb32b52 | 80 | #define MAXSYNTAXCLASS (sizeof (syntaxclass) / sizeof (struct syntax_classes)) |
0d2bcfaf | 81 | |
19203624 | 82 | const pseudo_typeS md_pseudo_table[] = { |
bcee8eb8 | 83 | { "align", s_align_bytes, 0 }, /* Defaulting is invalid (0). */ |
0d2bcfaf | 84 | { "comm", arc_common, 0 }, |
252b5132 | 85 | { "common", arc_common, 0 }, |
0d2bcfaf NC |
86 | { "lcomm", arc_common, 1 }, |
87 | { "lcommon", arc_common, 1 }, | |
88 | { "2byte", cons, 2 }, | |
89 | { "half", cons, 2 }, | |
90 | { "short", cons, 2 }, | |
91 | { "3byte", cons, 3 }, | |
92 | { "4byte", cons, 4 }, | |
252b5132 | 93 | { "word", cons, 4 }, |
0d2bcfaf | 94 | { "option", arc_option, 0 }, |
bcee8eb8 | 95 | { "cpu", arc_option, 0 }, |
0d2bcfaf | 96 | { "block", s_space, 0 }, |
9f1838ed | 97 | { "file", (void (*) PARAMS ((int))) dwarf2_directive_file, 0 }, |
bcee8eb8 | 98 | { "loc", dwarf2_directive_loc, 0 }, |
0d2bcfaf NC |
99 | { "extcondcode", arc_extoper, 0 }, |
100 | { "extcoreregister", arc_extoper, 1 }, | |
101 | { "extauxregister", arc_extoper, 2 }, | |
102 | { "extinstruction", arc_extinst, 0 }, | |
252b5132 RH |
103 | { NULL, 0, 0 }, |
104 | }; | |
105 | ||
106 | /* This array holds the chars that always start a comment. If the | |
bcee8eb8 | 107 | pre-processor is disabled, these aren't very useful. */ |
252b5132 RH |
108 | const char comment_chars[] = "#;"; |
109 | ||
110 | /* This array holds the chars that only start a comment at the beginning of | |
111 | a line. If the line seems to have the form '# 123 filename' | |
112 | .line and .file directives will appear in the pre-processed output */ | |
113 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
114 | first line of the input file. This is because the compiler outputs | |
bfb32b52 | 115 | #NO_APP at the beginning of its output. */ |
252b5132 | 116 | /* Also note that comments started like this one will always |
bfb32b52 | 117 | work if '/' isn't otherwise defined. */ |
252b5132 RH |
118 | const char line_comment_chars[] = "#"; |
119 | ||
120 | const char line_separator_chars[] = ""; | |
121 | ||
bcee8eb8 | 122 | /* Chars that can be used to separate mant from exp in floating point nums. */ |
252b5132 RH |
123 | const char EXP_CHARS[] = "eE"; |
124 | ||
bcee8eb8 AM |
125 | /* Chars that mean this number is a floating point constant |
126 | As in 0f12.456 or 0d1.2345e12. */ | |
252b5132 RH |
127 | const char FLT_CHARS[] = "rRsSfFdD"; |
128 | ||
129 | /* Byte order. */ | |
130 | extern int target_big_endian; | |
131 | const char *arc_target_format = DEFAULT_TARGET_FORMAT; | |
132 | static int byte_order = DEFAULT_BYTE_ORDER; | |
133 | ||
0d2bcfaf NC |
134 | static segT arcext_section; |
135 | ||
136 | /* One of bfd_mach_arc_n. */ | |
bcee8eb8 | 137 | static int arc_mach_type = bfd_mach_arc_6; |
252b5132 RH |
138 | |
139 | /* Non-zero if the cpu type has been explicitly specified. */ | |
140 | static int mach_type_specified_p = 0; | |
141 | ||
142 | /* Non-zero if opcode tables have been initialized. | |
bcee8eb8 | 143 | A .option command must appear before any instructions. */ |
252b5132 RH |
144 | static int cpu_tables_init_p = 0; |
145 | ||
146 | static struct hash_control *arc_suffix_hash = NULL; | |
147 | \f | |
148 | const char *md_shortopts = ""; | |
19203624 | 149 | struct option md_longopts[] = { |
252b5132 | 150 | #define OPTION_EB (OPTION_MD_BASE + 0) |
bcee8eb8 | 151 | { "EB", no_argument, NULL, OPTION_EB }, |
252b5132 | 152 | #define OPTION_EL (OPTION_MD_BASE + 1) |
bcee8eb8 | 153 | { "EL", no_argument, NULL, OPTION_EL }, |
0d2bcfaf | 154 | #define OPTION_ARC5 (OPTION_MD_BASE + 2) |
bcee8eb8 AM |
155 | { "marc5", no_argument, NULL, OPTION_ARC5 }, |
156 | { "pre-v6", no_argument, NULL, OPTION_ARC5 }, | |
0d2bcfaf | 157 | #define OPTION_ARC6 (OPTION_MD_BASE + 3) |
bcee8eb8 | 158 | { "marc6", no_argument, NULL, OPTION_ARC6 }, |
0d2bcfaf | 159 | #define OPTION_ARC7 (OPTION_MD_BASE + 4) |
bcee8eb8 | 160 | { "marc7", no_argument, NULL, OPTION_ARC7 }, |
0d2bcfaf | 161 | #define OPTION_ARC8 (OPTION_MD_BASE + 5) |
bcee8eb8 | 162 | { "marc8", no_argument, NULL, OPTION_ARC8 }, |
0d2bcfaf | 163 | #define OPTION_ARC (OPTION_MD_BASE + 6) |
bcee8eb8 | 164 | { "marc", no_argument, NULL, OPTION_ARC }, |
252b5132 RH |
165 | { NULL, no_argument, NULL, 0 } |
166 | }; | |
167 | size_t md_longopts_size = sizeof (md_longopts); | |
168 | ||
0d2bcfaf NC |
169 | #define IS_SYMBOL_OPERAND(o) \ |
170 | ((o) == 'b' || (o) == 'c' || (o) == 's' || (o) == 'o' || (o) == 'O') | |
171 | ||
19203624 | 172 | struct arc_operand_value *get_ext_suffix (char *s); |
0d2bcfaf | 173 | |
19203624 KH |
174 | /* Invocation line includes a switch not recognized by the base assembler. |
175 | See if it's a processor-specific option. */ | |
252b5132 RH |
176 | |
177 | int | |
178 | md_parse_option (c, arg) | |
179 | int c; | |
4a314ec8 | 180 | char *arg ATTRIBUTE_UNUSED; |
252b5132 RH |
181 | { |
182 | switch (c) | |
1e07b820 | 183 | { |
0d2bcfaf NC |
184 | case OPTION_ARC5: |
185 | arc_mach_type = bfd_mach_arc_5; | |
186 | break; | |
bcee8eb8 | 187 | case OPTION_ARC: |
0d2bcfaf NC |
188 | case OPTION_ARC6: |
189 | arc_mach_type = bfd_mach_arc_6; | |
190 | break; | |
191 | case OPTION_ARC7: | |
192 | arc_mach_type = bfd_mach_arc_7; | |
193 | break; | |
194 | case OPTION_ARC8: | |
195 | arc_mach_type = bfd_mach_arc_8; | |
196 | break; | |
252b5132 RH |
197 | case OPTION_EB: |
198 | byte_order = BIG_ENDIAN; | |
199 | arc_target_format = "elf32-bigarc"; | |
200 | break; | |
201 | case OPTION_EL: | |
202 | byte_order = LITTLE_ENDIAN; | |
203 | arc_target_format = "elf32-littlearc"; | |
204 | break; | |
205 | default: | |
206 | return 0; | |
1e07b820 | 207 | } |
252b5132 RH |
208 | return 1; |
209 | } | |
210 | ||
211 | void | |
212 | md_show_usage (stream) | |
213 | FILE *stream; | |
214 | { | |
0d2bcfaf NC |
215 | fprintf (stream, "\ |
216 | ARC Options:\n\ | |
217 | -marc[5|6|7|8] select processor variant (default arc%d)\n\ | |
218 | -EB assemble code for a big endian cpu\n\ | |
219 | -EL assemble code for a little endian cpu\n", arc_mach_type + 5); | |
252b5132 RH |
220 | } |
221 | ||
222 | /* This function is called once, at assembler startup time. It should | |
223 | set up all the tables, etc. that the MD part of the assembler will need. | |
bcee8eb8 | 224 | Opcode selection is deferred until later because we might see a .option |
252b5132 RH |
225 | command. */ |
226 | ||
227 | void | |
228 | md_begin () | |
229 | { | |
230 | /* The endianness can be chosen "at the factory". */ | |
231 | target_big_endian = byte_order == BIG_ENDIAN; | |
232 | ||
233 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_arc, arc_mach_type)) | |
0d2bcfaf | 234 | as_warn ("could not set architecture and machine"); |
252b5132 | 235 | |
bcee8eb8 AM |
236 | /* This call is necessary because we need to initialize `arc_operand_map' |
237 | which may be needed before we see the first insn. */ | |
0d2bcfaf | 238 | arc_opcode_init_tables (arc_get_opcode_mach (arc_mach_type, |
252b5132 RH |
239 | target_big_endian)); |
240 | } | |
241 | ||
242 | /* Initialize the various opcode and operand tables. | |
243 | MACH is one of bfd_mach_arc_xxx. */ | |
252b5132 RH |
244 | static void |
245 | init_opcode_tables (mach) | |
246 | int mach; | |
247 | { | |
4a314ec8 | 248 | int i; |
252b5132 RH |
249 | char *last; |
250 | ||
251 | if ((arc_suffix_hash = hash_new ()) == NULL) | |
0d2bcfaf | 252 | as_fatal ("virtual memory exhausted"); |
252b5132 RH |
253 | |
254 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_arc, mach)) | |
0d2bcfaf | 255 | as_warn ("could not set architecture and machine"); |
252b5132 RH |
256 | |
257 | /* This initializes a few things in arc-opc.c that we need. | |
258 | This must be called before the various arc_xxx_supported fns. */ | |
259 | arc_opcode_init_tables (arc_get_opcode_mach (mach, target_big_endian)); | |
260 | ||
261 | /* Only put the first entry of each equivalently named suffix in the | |
262 | table. */ | |
263 | last = ""; | |
264 | for (i = 0; i < arc_suffixes_count; i++) | |
265 | { | |
252b5132 RH |
266 | if (strcmp (arc_suffixes[i].name, last) != 0) |
267 | hash_insert (arc_suffix_hash, arc_suffixes[i].name, (PTR) (arc_suffixes + i)); | |
268 | last = arc_suffixes[i].name; | |
269 | } | |
270 | ||
271 | /* Since registers don't have a prefix, we put them in the symbol table so | |
272 | they can't be used as symbols. This also simplifies argument parsing as | |
273 | we can let gas parse registers for us. The recorded register number is | |
0d2bcfaf NC |
274 | the address of the register's entry in arc_reg_names. |
275 | ||
276 | If the register name is already in the table, then the existing | |
277 | definition is assumed to be from an .ExtCoreRegister pseudo-op. */ | |
278 | ||
252b5132 RH |
279 | for (i = 0; i < arc_reg_names_count; i++) |
280 | { | |
19203624 | 281 | if (symbol_find (arc_reg_names[i].name)) |
252b5132 RH |
282 | continue; |
283 | /* Use symbol_create here instead of symbol_new so we don't try to | |
284 | output registers into the object file's symbol table. */ | |
bcee8eb8 AM |
285 | symbol_table_insert (symbol_create (arc_reg_names[i].name, |
286 | reg_section, | |
287 | (int) &arc_reg_names[i], | |
288 | &zero_address_frag)); | |
252b5132 RH |
289 | } |
290 | ||
0d2bcfaf | 291 | /* Tell `.option' it's too late. */ |
252b5132 RH |
292 | cpu_tables_init_p = 1; |
293 | } | |
294 | \f | |
295 | /* Insert an operand value into an instruction. | |
296 | If REG is non-NULL, it is a register number and ignore VAL. */ | |
297 | ||
298 | static arc_insn | |
299 | arc_insert_operand (insn, operand, mods, reg, val, file, line) | |
300 | arc_insn insn; | |
301 | const struct arc_operand *operand; | |
302 | int mods; | |
303 | const struct arc_operand_value *reg; | |
304 | offsetT val; | |
305 | char *file; | |
306 | unsigned int line; | |
307 | { | |
308 | if (operand->bits != 32) | |
309 | { | |
310 | long min, max; | |
311 | offsetT test; | |
312 | ||
313 | if ((operand->flags & ARC_OPERAND_SIGNED) != 0) | |
314 | { | |
315 | if ((operand->flags & ARC_OPERAND_SIGNOPT) != 0) | |
316 | max = (1 << operand->bits) - 1; | |
317 | else | |
318 | max = (1 << (operand->bits - 1)) - 1; | |
319 | min = - (1 << (operand->bits - 1)); | |
320 | } | |
321 | else | |
322 | { | |
323 | max = (1 << operand->bits) - 1; | |
324 | min = 0; | |
325 | } | |
326 | ||
327 | if ((operand->flags & ARC_OPERAND_NEGATIVE) != 0) | |
328 | test = - val; | |
329 | else | |
330 | test = val; | |
331 | ||
332 | if (test < (offsetT) min || test > (offsetT) max) | |
333 | { | |
334 | const char *err = | |
0d2bcfaf | 335 | "operand out of range (%s not between %ld and %ld)"; |
252b5132 RH |
336 | char buf[100]; |
337 | ||
338 | sprint_value (buf, test); | |
339 | if (file == (char *) NULL) | |
340 | as_warn (err, buf, min, max); | |
341 | else | |
342 | as_warn_where (file, line, err, buf, min, max); | |
343 | } | |
344 | } | |
345 | ||
346 | if (operand->insert) | |
347 | { | |
348 | const char *errmsg; | |
349 | ||
350 | errmsg = NULL; | |
351 | insn = (*operand->insert) (insn, operand, mods, reg, (long) val, &errmsg); | |
352 | if (errmsg != (const char *) NULL) | |
353 | as_warn (errmsg); | |
354 | } | |
355 | else | |
356 | insn |= (((long) val & ((1 << operand->bits) - 1)) | |
357 | << operand->shift); | |
358 | ||
359 | return insn; | |
360 | } | |
361 | ||
362 | /* We need to keep a list of fixups. We can't simply generate them as | |
363 | we go, because that would require us to first create the frag, and | |
364 | that would screw up references to ``.''. */ | |
365 | ||
19203624 | 366 | struct arc_fixup { |
bcee8eb8 | 367 | /* index into `arc_operands' */ |
252b5132 RH |
368 | int opindex; |
369 | expressionS exp; | |
370 | }; | |
371 | ||
372 | #define MAX_FIXUPS 5 | |
373 | ||
374 | #define MAX_SUFFIXES 5 | |
375 | ||
376 | /* This routine is called for each instruction to be assembled. */ | |
377 | ||
378 | void | |
379 | md_assemble (str) | |
380 | char *str; | |
381 | { | |
382 | const struct arc_opcode *opcode; | |
0d2bcfaf NC |
383 | const struct arc_opcode *std_opcode; |
384 | struct arc_opcode *ext_opcode; | |
252b5132 | 385 | char *start; |
0d2bcfaf | 386 | const char *last_errmsg = 0; |
252b5132 RH |
387 | arc_insn insn; |
388 | static int init_tables_p = 0; | |
389 | ||
390 | /* Opcode table initialization is deferred until here because we have to | |
bcee8eb8 | 391 | wait for a possible .option command. */ |
252b5132 RH |
392 | if (!init_tables_p) |
393 | { | |
394 | init_opcode_tables (arc_mach_type); | |
395 | init_tables_p = 1; | |
396 | } | |
397 | ||
398 | /* Skip leading white space. */ | |
3882b010 | 399 | while (ISSPACE (*str)) |
252b5132 RH |
400 | str++; |
401 | ||
402 | /* The instructions are stored in lists hashed by the first letter (though | |
403 | we needn't care how they're hashed). Get the first in the list. */ | |
404 | ||
0d2bcfaf NC |
405 | ext_opcode = arc_ext_opcodes; |
406 | std_opcode = arc_opcode_lookup_asm (str); | |
252b5132 RH |
407 | |
408 | /* Keep looking until we find a match. */ | |
409 | ||
410 | start = str; | |
19203624 | 411 | for (opcode = (ext_opcode ? ext_opcode : std_opcode); |
0d2bcfaf NC |
412 | opcode != NULL; |
413 | opcode = (ARC_OPCODE_NEXT_ASM (opcode) | |
1e07b820 KH |
414 | ? ARC_OPCODE_NEXT_ASM (opcode) |
415 | : (ext_opcode ? ext_opcode = NULL, std_opcode : NULL))) | |
252b5132 RH |
416 | { |
417 | int past_opcode_p, fc, num_suffixes; | |
0d2bcfaf | 418 | int fix_up_at = 0; |
252b5132 RH |
419 | char *syn; |
420 | struct arc_fixup fixups[MAX_FIXUPS]; | |
421 | /* Used as a sanity check. If we need a limm reloc, make sure we ask | |
422 | for an extra 4 bytes from frag_more. */ | |
423 | int limm_reloc_p; | |
0d2bcfaf | 424 | int ext_suffix_p; |
252b5132 RH |
425 | const struct arc_operand_value *insn_suffixes[MAX_SUFFIXES]; |
426 | ||
427 | /* Is this opcode supported by the selected cpu? */ | |
428 | if (! arc_opcode_supported (opcode)) | |
429 | continue; | |
430 | ||
431 | /* Scan the syntax string. If it doesn't match, try the next one. */ | |
432 | ||
433 | arc_opcode_init_insert (); | |
434 | insn = opcode->value; | |
435 | fc = 0; | |
436 | past_opcode_p = 0; | |
437 | num_suffixes = 0; | |
438 | limm_reloc_p = 0; | |
0d2bcfaf | 439 | ext_suffix_p = 0; |
252b5132 RH |
440 | |
441 | /* We don't check for (*str != '\0') here because we want to parse | |
442 | any trailing fake arguments in the syntax string. */ | |
19203624 | 443 | for (str = start, syn = opcode->syntax; *syn != '\0';) |
252b5132 RH |
444 | { |
445 | int mods; | |
446 | const struct arc_operand *operand; | |
447 | ||
448 | /* Non operand chars must match exactly. */ | |
449 | if (*syn != '%' || *++syn == '%') | |
450 | { | |
451 | /* Handle '+' specially as we want to allow "ld r0,[sp-4]". */ | |
452 | /* ??? The syntax has changed to [sp,-4]. */ | |
453 | if (0 && *syn == '+' && *str == '-') | |
454 | { | |
455 | /* Skip over syn's +, but leave str's - alone. | |
456 | That makes the case identical to "ld r0,[sp+-4]". */ | |
457 | ++syn; | |
458 | } | |
459 | else if (*str == *syn) | |
460 | { | |
461 | if (*syn == ' ') | |
462 | past_opcode_p = 1; | |
463 | ++syn; | |
464 | ++str; | |
465 | } | |
466 | else | |
467 | break; | |
468 | continue; | |
469 | } | |
470 | ||
471 | /* We have an operand. Pick out any modifiers. */ | |
472 | mods = 0; | |
4a314ec8 | 473 | while (ARC_MOD_P (arc_operands[arc_operand_map[(int) *syn]].flags)) |
252b5132 | 474 | { |
4a314ec8 | 475 | mods |= arc_operands[arc_operand_map[(int) *syn]].flags & ARC_MOD_BITS; |
252b5132 RH |
476 | ++syn; |
477 | } | |
4a314ec8 | 478 | operand = arc_operands + arc_operand_map[(int) *syn]; |
252b5132 | 479 | if (operand->fmt == 0) |
0d2bcfaf | 480 | as_fatal ("unknown syntax format character `%c'", *syn); |
252b5132 RH |
481 | |
482 | if (operand->flags & ARC_OPERAND_FAKE) | |
483 | { | |
484 | const char *errmsg = NULL; | |
485 | if (operand->insert) | |
486 | { | |
487 | insn = (*operand->insert) (insn, operand, mods, NULL, 0, &errmsg); | |
1e07b820 KH |
488 | if (errmsg != (const char *) NULL) |
489 | { | |
490 | last_errmsg = errmsg; | |
491 | if (operand->flags & ARC_OPERAND_ERROR) | |
492 | { | |
493 | as_bad (errmsg); | |
494 | return; | |
495 | } | |
496 | else if (operand->flags & ARC_OPERAND_WARN) | |
497 | as_warn (errmsg); | |
498 | break; | |
499 | } | |
19203624 KH |
500 | if (limm_reloc_p |
501 | && (operand->flags && operand->flags & ARC_OPERAND_LIMM) | |
502 | && (operand->flags & | |
503 | (ARC_OPERAND_ABSOLUTE_BRANCH | ARC_OPERAND_ADDRESS))) | |
1e07b820 KH |
504 | { |
505 | fixups[fix_up_at].opindex = arc_operand_map[operand->fmt]; | |
506 | } | |
252b5132 RH |
507 | } |
508 | ++syn; | |
509 | } | |
510 | /* Are we finished with suffixes? */ | |
511 | else if (!past_opcode_p) | |
512 | { | |
513 | int found; | |
514 | char c; | |
19203624 KH |
515 | char *s, *t; |
516 | const struct arc_operand_value *suf, *suffix_end; | |
0d2bcfaf | 517 | const struct arc_operand_value *suffix = NULL; |
252b5132 RH |
518 | |
519 | if (!(operand->flags & ARC_OPERAND_SUFFIX)) | |
520 | abort (); | |
521 | ||
522 | /* If we're at a space in the input string, we want to skip the | |
523 | remaining suffixes. There may be some fake ones though, so | |
524 | just go on to try the next one. */ | |
525 | if (*str == ' ') | |
526 | { | |
527 | ++syn; | |
528 | continue; | |
529 | } | |
530 | ||
531 | s = str; | |
532 | if (mods & ARC_MOD_DOT) | |
533 | { | |
534 | if (*s != '.') | |
535 | break; | |
536 | ++s; | |
537 | } | |
538 | else | |
539 | { | |
540 | /* This can happen in "b.nd foo" and we're currently looking | |
541 | for "%q" (ie: a condition code suffix). */ | |
542 | if (*s == '.') | |
543 | { | |
544 | ++syn; | |
545 | continue; | |
546 | } | |
547 | } | |
548 | ||
549 | /* Pick the suffix out and look it up via the hash table. */ | |
3882b010 | 550 | for (t = s; *t && ISALNUM (*t); ++t) |
252b5132 RH |
551 | continue; |
552 | c = *t; | |
553 | *t = '\0'; | |
19203624 | 554 | if ((suf = get_ext_suffix (s))) |
1e07b820 KH |
555 | ext_suffix_p = 1; |
556 | else | |
557 | suf = hash_find (arc_suffix_hash, s); | |
252b5132 RH |
558 | if (!suf) |
559 | { | |
560 | /* This can happen in "blle foo" and we're currently using | |
561 | the template "b%q%.n %j". The "bl" insn occurs later in | |
562 | the table so "lle" isn't an illegal suffix. */ | |
1e07b820 | 563 | *t = c; |
252b5132 RH |
564 | break; |
565 | } | |
566 | ||
567 | /* Is it the right type? Note that the same character is used | |
1e07b820 | 568 | several times, so we have to examine all of them. This is |
252b5132 RH |
569 | relatively efficient as equivalent entries are kept |
570 | together. If it's not the right type, don't increment `str' | |
571 | so we try the next one in the series. */ | |
572 | found = 0; | |
1e07b820 KH |
573 | if (ext_suffix_p && arc_operands[suf->type].fmt == *syn) |
574 | { | |
575 | /* Insert the suffix's value into the insn. */ | |
576 | *t = c; | |
577 | if (operand->insert) | |
578 | insn = (*operand->insert) (insn, operand, | |
579 | mods, NULL, suf->value, | |
580 | NULL); | |
581 | else | |
582 | insn |= suf->value << operand->shift; | |
583 | ||
584 | str = t; | |
585 | found = 1; | |
586 | } | |
587 | else | |
588 | { | |
589 | *t = c; | |
590 | suffix_end = arc_suffixes + arc_suffixes_count; | |
591 | for (suffix = suf; | |
592 | suffix < suffix_end && strcmp (suffix->name, suf->name) == 0; | |
593 | ++suffix) | |
594 | { | |
595 | if (arc_operands[suffix->type].fmt == *syn) | |
596 | { | |
597 | /* Insert the suffix's value into the insn. */ | |
598 | if (operand->insert) | |
599 | insn = (*operand->insert) (insn, operand, | |
600 | mods, NULL, suffix->value, | |
601 | NULL); | |
602 | else | |
603 | insn |= suffix->value << operand->shift; | |
604 | ||
605 | str = t; | |
606 | found = 1; | |
607 | break; | |
608 | } | |
609 | } | |
610 | } | |
252b5132 RH |
611 | ++syn; |
612 | if (!found) | |
19203624 KH |
613 | /* Wrong type. Just go on to try next insn entry. */ |
614 | ; | |
252b5132 RH |
615 | else |
616 | { | |
617 | if (num_suffixes == MAX_SUFFIXES) | |
0d2bcfaf | 618 | as_bad ("too many suffixes"); |
252b5132 RH |
619 | else |
620 | insn_suffixes[num_suffixes++] = suffix; | |
621 | } | |
622 | } | |
623 | else | |
624 | /* This is either a register or an expression of some kind. */ | |
625 | { | |
252b5132 RH |
626 | char *hold; |
627 | const struct arc_operand_value *reg = NULL; | |
628 | long value = 0; | |
629 | expressionS exp; | |
630 | ||
631 | if (operand->flags & ARC_OPERAND_SUFFIX) | |
632 | abort (); | |
633 | ||
634 | /* Is there anything left to parse? | |
635 | We don't check for this at the top because we want to parse | |
636 | any trailing fake arguments in the syntax string. */ | |
2d0441d9 | 637 | if (is_end_of_line[(unsigned char) *str]) |
252b5132 | 638 | break; |
252b5132 RH |
639 | |
640 | /* Parse the operand. */ | |
641 | hold = input_line_pointer; | |
642 | input_line_pointer = str; | |
643 | expression (&exp); | |
644 | str = input_line_pointer; | |
645 | input_line_pointer = hold; | |
646 | ||
647 | if (exp.X_op == O_illegal) | |
0d2bcfaf | 648 | as_bad ("illegal operand"); |
252b5132 | 649 | else if (exp.X_op == O_absent) |
0d2bcfaf | 650 | as_bad ("missing operand"); |
252b5132 RH |
651 | else if (exp.X_op == O_constant) |
652 | { | |
653 | value = exp.X_add_number; | |
654 | } | |
655 | else if (exp.X_op == O_register) | |
656 | { | |
0d2bcfaf | 657 | reg = (struct arc_operand_value *) exp.X_add_number; |
252b5132 | 658 | } |
0d2bcfaf NC |
659 | #define IS_REG_DEST_OPERAND(o) ((o) == 'a') |
660 | else if (IS_REG_DEST_OPERAND (*syn)) | |
19203624 | 661 | as_bad ("symbol as destination register"); |
1e07b820 | 662 | else |
252b5132 | 663 | { |
19203624 | 664 | if (!strncmp (str, "@h30", 4)) |
1e07b820 | 665 | { |
19203624 | 666 | arc_code_symbol (&exp); |
1e07b820 KH |
667 | str += 4; |
668 | } | |
252b5132 RH |
669 | /* We need to generate a fixup for this expression. */ |
670 | if (fc >= MAX_FIXUPS) | |
0d2bcfaf | 671 | as_fatal ("too many fixups"); |
252b5132 | 672 | fixups[fc].exp = exp; |
1e07b820 | 673 | /* We don't support shimm relocs. break here to force |
19203624 | 674 | the assembler to output a limm. */ |
0d2bcfaf | 675 | #define IS_REG_SHIMM_OFFSET(o) ((o) == 'd') |
19203624 | 676 | if (IS_REG_SHIMM_OFFSET (*syn)) |
1e07b820 | 677 | break; |
252b5132 RH |
678 | /* If this is a register constant (IE: one whose |
679 | register value gets stored as 61-63) then this | |
bfb32b52 | 680 | must be a limm. */ |
252b5132 RH |
681 | /* ??? This bit could use some cleaning up. |
682 | Referencing the format chars like this goes | |
683 | against style. */ | |
0d2bcfaf | 684 | if (IS_SYMBOL_OPERAND (*syn)) |
252b5132 RH |
685 | { |
686 | const char *junk; | |
252b5132 | 687 | limm_reloc_p = 1; |
19203624 | 688 | /* Save this, we don't yet know what reloc to use. */ |
1e07b820 | 689 | fix_up_at = fc; |
252b5132 RH |
690 | /* Tell insert_reg we need a limm. This is |
691 | needed because the value at this point is | |
692 | zero, a shimm. */ | |
693 | /* ??? We need a cleaner interface than this. */ | |
694 | (*arc_operands[arc_operand_map['Q']].insert) | |
695 | (insn, operand, mods, reg, 0L, &junk); | |
696 | } | |
697 | else | |
4a314ec8 | 698 | fixups[fc].opindex = arc_operand_map[(int) *syn]; |
252b5132 RH |
699 | ++fc; |
700 | value = 0; | |
701 | } | |
702 | ||
703 | /* Insert the register or expression into the instruction. */ | |
704 | if (operand->insert) | |
705 | { | |
706 | const char *errmsg = NULL; | |
707 | insn = (*operand->insert) (insn, operand, mods, | |
708 | reg, (long) value, &errmsg); | |
1e07b820 KH |
709 | if (errmsg != (const char *) NULL) |
710 | { | |
711 | last_errmsg = errmsg; | |
712 | if (operand->flags & ARC_OPERAND_ERROR) | |
713 | { | |
714 | as_bad (errmsg); | |
715 | return; | |
716 | } | |
717 | else if (operand->flags & ARC_OPERAND_WARN) | |
718 | as_warn (errmsg); | |
719 | break; | |
720 | } | |
252b5132 RH |
721 | } |
722 | else | |
723 | insn |= (value & ((1 << operand->bits) - 1)) << operand->shift; | |
724 | ||
725 | ++syn; | |
726 | } | |
727 | } | |
728 | ||
729 | /* If we're at the end of the syntax string, we're done. */ | |
730 | /* FIXME: try to move this to a separate function. */ | |
731 | if (*syn == '\0') | |
732 | { | |
733 | int i; | |
734 | char *f; | |
735 | long limm, limm_p; | |
736 | ||
737 | /* For the moment we assume a valid `str' can only contain blanks | |
738 | now. IE: We needn't try again with a longer version of the | |
739 | insn and it is assumed that longer versions of insns appear | |
740 | before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ | |
741 | ||
3882b010 | 742 | while (ISSPACE (*str)) |
252b5132 RH |
743 | ++str; |
744 | ||
2d0441d9 | 745 | if (!is_end_of_line[(unsigned char) *str]) |
0d2bcfaf | 746 | as_bad ("junk at end of line: `%s'", str); |
252b5132 RH |
747 | |
748 | /* Is there a limm value? */ | |
749 | limm_p = arc_opcode_limm_p (&limm); | |
750 | ||
751 | /* Perform various error and warning tests. */ | |
752 | ||
753 | { | |
754 | static int in_delay_slot_p = 0; | |
755 | static int prev_insn_needs_cc_nop_p = 0; | |
756 | /* delay slot type seen */ | |
757 | int delay_slot_type = ARC_DELAY_NONE; | |
758 | /* conditional execution flag seen */ | |
759 | int conditional = 0; | |
760 | /* 1 if condition codes are being set */ | |
761 | int cc_set_p = 0; | |
762 | /* 1 if conditional branch, including `b' "branch always" */ | |
763 | int cond_branch_p = opcode->flags & ARC_OPCODE_COND_BRANCH; | |
252b5132 RH |
764 | |
765 | for (i = 0; i < num_suffixes; ++i) | |
766 | { | |
767 | switch (arc_operands[insn_suffixes[i]->type].fmt) | |
768 | { | |
19203624 | 769 | case 'n': |
252b5132 RH |
770 | delay_slot_type = insn_suffixes[i]->value; |
771 | break; | |
19203624 | 772 | case 'q': |
252b5132 RH |
773 | conditional = insn_suffixes[i]->value; |
774 | break; | |
19203624 | 775 | case 'f': |
252b5132 RH |
776 | cc_set_p = 1; |
777 | break; | |
778 | } | |
779 | } | |
780 | ||
781 | /* Putting an insn with a limm value in a delay slot is supposed to | |
782 | be legal, but let's warn the user anyway. Ditto for 8 byte | |
783 | jumps with delay slots. */ | |
784 | if (in_delay_slot_p && limm_p) | |
1e07b820 | 785 | as_warn ("8 byte instruction in delay slot"); |
0d2bcfaf | 786 | if (delay_slot_type != ARC_DELAY_NONE |
19203624 | 787 | && limm_p && arc_insn_not_jl (insn)) /* except for jl addr */ |
1e07b820 | 788 | as_warn ("8 byte jump instruction with delay slot"); |
252b5132 RH |
789 | in_delay_slot_p = (delay_slot_type != ARC_DELAY_NONE) && !limm_p; |
790 | ||
791 | /* Warn when a conditional branch immediately follows a set of | |
792 | the condition codes. Note that this needn't be done if the | |
793 | insn that sets the condition codes uses a limm. */ | |
794 | if (cond_branch_p && conditional != 0 /* 0 = "always" */ | |
0d2bcfaf | 795 | && prev_insn_needs_cc_nop_p && arc_mach_type == bfd_mach_arc_5) |
1e07b820 | 796 | as_warn ("conditional branch follows set of flags"); |
0d2bcfaf | 797 | prev_insn_needs_cc_nop_p = |
1e07b820 KH |
798 | /* FIXME: ??? not required: |
799 | (delay_slot_type != ARC_DELAY_NONE) && */ | |
800 | cc_set_p && !limm_p; | |
252b5132 RH |
801 | } |
802 | ||
803 | /* Write out the instruction. | |
804 | It is important to fetch enough space in one call to `frag_more'. | |
805 | We use (f - frag_now->fr_literal) to compute where we are and we | |
806 | don't want frag_now to change between calls. */ | |
807 | if (limm_p) | |
808 | { | |
809 | f = frag_more (8); | |
810 | md_number_to_chars (f, insn, 4); | |
811 | md_number_to_chars (f + 4, limm, 4); | |
9fcc94b6 | 812 | dwarf2_emit_insn (8); |
252b5132 RH |
813 | } |
814 | else if (limm_reloc_p) | |
815 | { | |
816 | /* We need a limm reloc, but the tables think we don't. */ | |
817 | abort (); | |
818 | } | |
819 | else | |
820 | { | |
821 | f = frag_more (4); | |
822 | md_number_to_chars (f, insn, 4); | |
9fcc94b6 | 823 | dwarf2_emit_insn (4); |
252b5132 RH |
824 | } |
825 | ||
826 | /* Create any fixups. */ | |
827 | for (i = 0; i < fc; ++i) | |
828 | { | |
829 | int op_type, reloc_type; | |
830 | expressionS exptmp; | |
831 | const struct arc_operand *operand; | |
832 | ||
833 | /* Create a fixup for this operand. | |
834 | At this point we do not use a bfd_reloc_code_real_type for | |
835 | operands residing in the insn, but instead just use the | |
836 | operand index. This lets us easily handle fixups for any | |
837 | operand type, although that is admittedly not a very exciting | |
94f592af | 838 | feature. We pick a BFD reloc type in md_apply_fix3. |
252b5132 RH |
839 | |
840 | Limm values (4 byte immediate "constants") must be treated | |
841 | normally because they're not part of the actual insn word | |
842 | and thus the insertion routines don't handle them. */ | |
843 | ||
844 | if (arc_operands[fixups[i].opindex].flags & ARC_OPERAND_LIMM) | |
845 | { | |
19203624 KH |
846 | /* Modify the fixup addend as required by the cpu. */ |
847 | fixups[i].exp.X_add_number += arc_limm_fixup_adjust (insn); | |
252b5132 RH |
848 | op_type = fixups[i].opindex; |
849 | /* FIXME: can we add this data to the operand table? */ | |
0d2bcfaf | 850 | if (op_type == arc_operand_map['L'] |
1e07b820 KH |
851 | || op_type == arc_operand_map['s'] |
852 | || op_type == arc_operand_map['o'] | |
853 | || op_type == arc_operand_map['O']) | |
252b5132 RH |
854 | reloc_type = BFD_RELOC_32; |
855 | else if (op_type == arc_operand_map['J']) | |
856 | reloc_type = BFD_RELOC_ARC_B26; | |
857 | else | |
858 | abort (); | |
859 | reloc_type = get_arc_exp_reloc_type (1, reloc_type, | |
860 | &fixups[i].exp, | |
861 | &exptmp); | |
862 | } | |
863 | else | |
864 | { | |
865 | op_type = get_arc_exp_reloc_type (0, fixups[i].opindex, | |
866 | &fixups[i].exp, &exptmp); | |
867 | reloc_type = op_type + (int) BFD_RELOC_UNUSED; | |
868 | } | |
869 | operand = &arc_operands[op_type]; | |
870 | fix_new_exp (frag_now, | |
871 | ((f - frag_now->fr_literal) | |
872 | + (operand->flags & ARC_OPERAND_LIMM ? 4 : 0)), 4, | |
873 | &exptmp, | |
874 | (operand->flags & ARC_OPERAND_RELATIVE_BRANCH) != 0, | |
875 | (bfd_reloc_code_real_type) reloc_type); | |
876 | } | |
877 | ||
878 | /* All done. */ | |
879 | return; | |
880 | } | |
881 | ||
882 | /* Try the next entry. */ | |
883 | } | |
884 | ||
19203624 | 885 | if (NULL == last_errmsg) |
0d2bcfaf NC |
886 | as_bad ("bad instruction `%s'", start); |
887 | else | |
888 | as_bad (last_errmsg); | |
252b5132 RH |
889 | } |
890 | \f | |
252b5132 | 891 | static void |
0d2bcfaf NC |
892 | arc_extoper (opertype) |
893 | int opertype; | |
252b5132 RH |
894 | { |
895 | char *name; | |
0d2bcfaf | 896 | char *mode; |
252b5132 RH |
897 | char c; |
898 | char *p; | |
0d2bcfaf NC |
899 | int imode = 0; |
900 | int number; | |
901 | struct arc_ext_operand_value *ext_oper; | |
252b5132 RH |
902 | symbolS *symbolP; |
903 | ||
0d2bcfaf NC |
904 | segT old_sec; |
905 | int old_subsec; | |
906 | ||
252b5132 RH |
907 | name = input_line_pointer; |
908 | c = get_symbol_end (); | |
19203624 | 909 | name = xstrdup (name); |
0d2bcfaf NC |
910 | if (NULL == name) |
911 | { | |
19203624 | 912 | ignore_rest_of_line (); |
1e07b820 | 913 | return; |
0d2bcfaf NC |
914 | } |
915 | ||
916 | p = name; | |
917 | while (*p) | |
918 | { | |
3882b010 | 919 | *p = TOLOWER (*p); |
1e07b820 | 920 | p++; |
0d2bcfaf NC |
921 | } |
922 | ||
bcee8eb8 | 923 | /* just after name is now '\0' */ |
252b5132 RH |
924 | p = input_line_pointer; |
925 | *p = c; | |
926 | SKIP_WHITESPACE (); | |
0d2bcfaf | 927 | |
252b5132 RH |
928 | if (*input_line_pointer != ',') |
929 | { | |
0d2bcfaf | 930 | as_bad ("expected comma after operand name"); |
252b5132 | 931 | ignore_rest_of_line (); |
19203624 | 932 | free (name); |
252b5132 RH |
933 | return; |
934 | } | |
0d2bcfaf | 935 | |
bcee8eb8 | 936 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf NC |
937 | number = get_absolute_expression (); |
938 | ||
19203624 | 939 | if (number < 0) |
0d2bcfaf | 940 | { |
19203624 KH |
941 | as_bad ("negative operand number %d", number); |
942 | ignore_rest_of_line (); | |
943 | free (name); | |
1e07b820 | 944 | return; |
0d2bcfaf NC |
945 | } |
946 | ||
947 | if (opertype) | |
948 | { | |
19203624 | 949 | SKIP_WHITESPACE (); |
0d2bcfaf NC |
950 | |
951 | if (*input_line_pointer != ',') | |
1e07b820 KH |
952 | { |
953 | as_bad ("expected comma after register-number"); | |
954 | ignore_rest_of_line (); | |
19203624 | 955 | free (name); |
1e07b820 KH |
956 | return; |
957 | } | |
bfb32b52 | 958 | |
bcee8eb8 | 959 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf | 960 | mode = input_line_pointer; |
bfb32b52 | 961 | |
19203624 | 962 | if (!strncmp (mode, "r|w", 3)) |
1e07b820 KH |
963 | { |
964 | imode = 0; | |
965 | input_line_pointer += 3; | |
966 | } | |
0d2bcfaf | 967 | else |
1e07b820 | 968 | { |
19203624 | 969 | if (!strncmp (mode, "r", 1)) |
1e07b820 KH |
970 | { |
971 | imode = ARC_REGISTER_READONLY; | |
972 | input_line_pointer += 1; | |
973 | } | |
974 | else | |
975 | { | |
19203624 | 976 | if (strncmp (mode, "w", 1)) |
1e07b820 KH |
977 | { |
978 | as_bad ("invalid mode"); | |
19203624 KH |
979 | ignore_rest_of_line (); |
980 | free (name); | |
1e07b820 KH |
981 | return; |
982 | } | |
983 | else | |
984 | { | |
985 | imode = ARC_REGISTER_WRITEONLY; | |
986 | input_line_pointer += 1; | |
987 | } | |
988 | } | |
989 | } | |
19203624 | 990 | SKIP_WHITESPACE (); |
1e07b820 KH |
991 | if (1 == opertype) |
992 | { | |
993 | if (*input_line_pointer != ',') | |
994 | { | |
995 | as_bad ("expected comma after register-mode"); | |
996 | ignore_rest_of_line (); | |
19203624 | 997 | free (name); |
1e07b820 KH |
998 | return; |
999 | } | |
1000 | ||
bcee8eb8 | 1001 | input_line_pointer++; /* skip ',' */ |
1e07b820 | 1002 | |
19203624 | 1003 | if (!strncmp (input_line_pointer, "cannot_shortcut", 15)) |
1e07b820 | 1004 | { |
19203624 | 1005 | imode |= arc_get_noshortcut_flag (); |
1e07b820 KH |
1006 | input_line_pointer += 15; |
1007 | } | |
1008 | else | |
1009 | { | |
19203624 | 1010 | if (strncmp (input_line_pointer, "can_shortcut", 12)) |
1e07b820 KH |
1011 | { |
1012 | as_bad ("shortcut designator invalid"); | |
19203624 KH |
1013 | ignore_rest_of_line (); |
1014 | free (name); | |
1e07b820 KH |
1015 | return; |
1016 | } | |
1017 | else | |
1018 | { | |
1019 | input_line_pointer += 12; | |
1020 | } | |
1021 | } | |
1022 | } | |
1023 | } | |
0d2bcfaf NC |
1024 | |
1025 | if ((opertype == 1) && number > 60) | |
1e07b820 | 1026 | { |
19203624 KH |
1027 | as_bad ("core register value (%d) too large", number); |
1028 | ignore_rest_of_line (); | |
1029 | free (name); | |
1e07b820 KH |
1030 | return; |
1031 | } | |
0d2bcfaf NC |
1032 | |
1033 | if ((opertype == 0) && number > 31) | |
1e07b820 | 1034 | { |
19203624 KH |
1035 | as_bad ("condition code value (%d) too large", number); |
1036 | ignore_rest_of_line (); | |
1037 | free (name); | |
1e07b820 KH |
1038 | return; |
1039 | } | |
0d2bcfaf NC |
1040 | |
1041 | ext_oper = (struct arc_ext_operand_value *) \ | |
19203624 | 1042 | xmalloc (sizeof (struct arc_ext_operand_value)); |
0d2bcfaf | 1043 | |
19203624 | 1044 | if (opertype) |
0d2bcfaf | 1045 | { |
19203624 | 1046 | /* If the symbol already exists, point it at the new definition. */ |
0d2bcfaf | 1047 | if ((symbolP = symbol_find (name))) |
1e07b820 | 1048 | { |
19203624 KH |
1049 | if (S_GET_SEGMENT (symbolP) == reg_section) |
1050 | S_SET_VALUE (symbolP, (int) &ext_oper->operand); | |
1e07b820 KH |
1051 | else |
1052 | { | |
19203624 KH |
1053 | as_bad ("attempt to override symbol: %s", name); |
1054 | ignore_rest_of_line (); | |
1055 | free (name); | |
1056 | free (ext_oper); | |
1e07b820 KH |
1057 | return; |
1058 | } | |
1059 | } | |
0d2bcfaf | 1060 | else |
1e07b820 | 1061 | { |
19203624 | 1062 | /* If its not there, add it. */ |
1e07b820 KH |
1063 | symbol_table_insert (symbol_create (name, reg_section, |
1064 | (int) &ext_oper->operand, &zero_address_frag)); | |
1065 | } | |
0d2bcfaf NC |
1066 | } |
1067 | ||
1068 | ext_oper->operand.name = name; | |
1069 | ext_oper->operand.value = number; | |
19203624 | 1070 | ext_oper->operand.type = arc_operand_type (opertype); |
0d2bcfaf NC |
1071 | ext_oper->operand.flags = imode; |
1072 | ||
1073 | ext_oper->next = arc_ext_operands; | |
1074 | arc_ext_operands = ext_oper; | |
1075 | ||
19203624 KH |
1076 | /* OK, now that we know what this operand is, put a description in |
1077 | the arc extension section of the output file. */ | |
0d2bcfaf NC |
1078 | |
1079 | old_sec = now_seg; | |
1080 | old_subsec = now_subseg; | |
1081 | ||
19203624 | 1082 | arc_set_ext_seg (); |
0d2bcfaf NC |
1083 | |
1084 | switch (opertype) | |
1e07b820 KH |
1085 | { |
1086 | case 0: | |
19203624 KH |
1087 | p = frag_more (1); |
1088 | *p = 3 + strlen (name) + 1; | |
1089 | p = frag_more (1); | |
1e07b820 | 1090 | *p = EXT_COND_CODE; |
19203624 | 1091 | p = frag_more (1); |
1e07b820 | 1092 | *p = number; |
19203624 KH |
1093 | p = frag_more (strlen (name) + 1); |
1094 | strcpy (p, name); | |
1e07b820 KH |
1095 | break; |
1096 | case 1: | |
19203624 KH |
1097 | p = frag_more (1); |
1098 | *p = 3 + strlen (name) + 1; | |
1099 | p = frag_more (1); | |
1e07b820 | 1100 | *p = EXT_CORE_REGISTER; |
19203624 | 1101 | p = frag_more (1); |
1e07b820 | 1102 | *p = number; |
19203624 KH |
1103 | p = frag_more (strlen (name) + 1); |
1104 | strcpy (p, name); | |
1e07b820 KH |
1105 | break; |
1106 | case 2: | |
19203624 KH |
1107 | p = frag_more (1); |
1108 | *p = 6 + strlen (name) + 1; | |
1109 | p = frag_more (1); | |
1e07b820 | 1110 | *p = EXT_AUX_REGISTER; |
19203624 | 1111 | p = frag_more (1); |
1e07b820 | 1112 | *p = number >> 24 & 0xff; |
19203624 | 1113 | p = frag_more (1); |
1e07b820 | 1114 | *p = number >> 16 & 0xff; |
19203624 | 1115 | p = frag_more (1); |
1e07b820 | 1116 | *p = number >> 8 & 0xff; |
19203624 | 1117 | p = frag_more (1); |
1e07b820 | 1118 | *p = number & 0xff; |
19203624 KH |
1119 | p = frag_more (strlen (name) + 1); |
1120 | strcpy (p, name); | |
1e07b820 KH |
1121 | break; |
1122 | default: | |
19203624 KH |
1123 | as_bad ("invalid opertype"); |
1124 | ignore_rest_of_line (); | |
1125 | free (name); | |
1e07b820 KH |
1126 | return; |
1127 | break; | |
1128 | } | |
0d2bcfaf NC |
1129 | |
1130 | subseg_set (old_sec, old_subsec); | |
1131 | ||
19203624 | 1132 | /* Enter all registers into the symbol table. */ |
0d2bcfaf | 1133 | |
19203624 | 1134 | demand_empty_rest_of_line (); |
0d2bcfaf NC |
1135 | } |
1136 | ||
1137 | static void | |
1138 | arc_extinst (ignore) | |
19203624 | 1139 | int ignore ATTRIBUTE_UNUSED; |
0d2bcfaf NC |
1140 | { |
1141 | unsigned char syntax[129]; | |
1142 | char *name; | |
1143 | char *p; | |
1144 | char c; | |
1145 | int suffixcode = -1; | |
19203624 | 1146 | int opcode, subopcode; |
0d2bcfaf NC |
1147 | int i; |
1148 | int class = 0; | |
1149 | int name_len; | |
1150 | struct arc_opcode *ext_op; | |
1151 | ||
1152 | segT old_sec; | |
1153 | int old_subsec; | |
1154 | ||
1155 | name = input_line_pointer; | |
1156 | c = get_symbol_end (); | |
19203624 | 1157 | name = xstrdup (name); |
0d2bcfaf NC |
1158 | if (NULL == name) |
1159 | { | |
19203624 | 1160 | ignore_rest_of_line (); |
1e07b820 | 1161 | return; |
0d2bcfaf | 1162 | } |
19203624 KH |
1163 | strcpy (syntax, name); |
1164 | name_len = strlen (name); | |
0d2bcfaf | 1165 | |
bcee8eb8 | 1166 | /* just after name is now '\0' */ |
0d2bcfaf NC |
1167 | p = input_line_pointer; |
1168 | *p = c; | |
1169 | ||
1170 | SKIP_WHITESPACE (); | |
1171 | ||
1172 | if (*input_line_pointer != ',') | |
252b5132 | 1173 | { |
0d2bcfaf | 1174 | as_bad ("expected comma after operand name"); |
252b5132 RH |
1175 | ignore_rest_of_line (); |
1176 | return; | |
1177 | } | |
0d2bcfaf | 1178 | |
bcee8eb8 | 1179 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf NC |
1180 | opcode = get_absolute_expression (); |
1181 | ||
1182 | SKIP_WHITESPACE (); | |
1183 | ||
1184 | if (*input_line_pointer != ',') | |
252b5132 | 1185 | { |
0d2bcfaf | 1186 | as_bad ("expected comma after opcode"); |
252b5132 RH |
1187 | ignore_rest_of_line (); |
1188 | return; | |
1189 | } | |
0d2bcfaf | 1190 | |
bcee8eb8 | 1191 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf NC |
1192 | subopcode = get_absolute_expression (); |
1193 | ||
19203624 | 1194 | if (subopcode < 0) |
252b5132 | 1195 | { |
19203624 KH |
1196 | as_bad ("negative subopcode %d", subopcode); |
1197 | ignore_rest_of_line (); | |
1e07b820 | 1198 | return; |
252b5132 | 1199 | } |
0d2bcfaf | 1200 | |
19203624 | 1201 | if (subopcode) |
0d2bcfaf | 1202 | { |
19203624 | 1203 | if (3 != opcode) |
1e07b820 KH |
1204 | { |
1205 | as_bad ("subcode value found when opcode not equal 0x03"); | |
19203624 | 1206 | ignore_rest_of_line (); |
1e07b820 KH |
1207 | return; |
1208 | } | |
1209 | else | |
1210 | { | |
1211 | if (subopcode < 0x09 || subopcode == 0x3f) | |
1212 | { | |
1213 | as_bad ("invalid subopcode %d", subopcode); | |
19203624 | 1214 | ignore_rest_of_line (); |
1e07b820 KH |
1215 | return; |
1216 | } | |
1217 | } | |
0d2bcfaf NC |
1218 | } |
1219 | ||
1220 | SKIP_WHITESPACE (); | |
1221 | ||
252b5132 RH |
1222 | if (*input_line_pointer != ',') |
1223 | { | |
0d2bcfaf | 1224 | as_bad ("expected comma after subopcode"); |
252b5132 RH |
1225 | ignore_rest_of_line (); |
1226 | return; | |
1227 | } | |
0d2bcfaf | 1228 | |
bcee8eb8 | 1229 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf | 1230 | |
19203624 | 1231 | for (i = 0; i < (int) MAXSUFFIXCLASS; i++) |
0d2bcfaf | 1232 | { |
19203624 | 1233 | if (!strncmp (suffixclass[i].name,input_line_pointer, suffixclass[i].len)) |
1e07b820 KH |
1234 | { |
1235 | suffixcode = i; | |
1236 | input_line_pointer += suffixclass[i].len; | |
1237 | break; | |
1238 | } | |
0d2bcfaf NC |
1239 | } |
1240 | ||
19203624 | 1241 | if (-1 == suffixcode) |
0d2bcfaf NC |
1242 | { |
1243 | as_bad ("invalid suffix class"); | |
1244 | ignore_rest_of_line (); | |
1245 | return; | |
1246 | } | |
1247 | ||
252b5132 | 1248 | SKIP_WHITESPACE (); |
0d2bcfaf NC |
1249 | |
1250 | if (*input_line_pointer != ',') | |
252b5132 | 1251 | { |
0d2bcfaf NC |
1252 | as_bad ("expected comma after suffix class"); |
1253 | ignore_rest_of_line (); | |
1254 | return; | |
252b5132 | 1255 | } |
0d2bcfaf | 1256 | |
bcee8eb8 | 1257 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf | 1258 | |
19203624 | 1259 | for (i = 0; i < (int) MAXSYNTAXCLASS; i++) |
252b5132 | 1260 | { |
19203624 | 1261 | if (!strncmp (syntaxclass[i].name,input_line_pointer, syntaxclass[i].len)) |
1e07b820 KH |
1262 | { |
1263 | class = syntaxclass[i].class; | |
1264 | input_line_pointer += syntaxclass[i].len; | |
1265 | break; | |
1266 | } | |
252b5132 | 1267 | } |
252b5132 | 1268 | |
19203624 | 1269 | if (0 == (SYNTAX_VALID & class)) |
0d2bcfaf NC |
1270 | { |
1271 | as_bad ("invalid syntax class"); | |
1272 | ignore_rest_of_line (); | |
1273 | return; | |
1274 | } | |
1275 | ||
19203624 | 1276 | if ((0x3 == opcode) & (class & SYNTAX_3OP)) |
0d2bcfaf NC |
1277 | { |
1278 | as_bad ("opcode 0x3 and SYNTAX_3OP invalid"); | |
1279 | ignore_rest_of_line (); | |
1280 | return; | |
1281 | } | |
1282 | ||
1283 | switch (suffixcode) | |
1e07b820 KH |
1284 | { |
1285 | case 0: | |
19203624 | 1286 | strcat (syntax, "%.q%.f "); |
1e07b820 KH |
1287 | break; |
1288 | case 1: | |
19203624 | 1289 | strcat (syntax, "%.f "); |
1e07b820 KH |
1290 | break; |
1291 | case 2: | |
19203624 | 1292 | strcat (syntax, "%.q "); |
1e07b820 KH |
1293 | break; |
1294 | case 3: | |
19203624 | 1295 | strcat (syntax, " "); |
1e07b820 KH |
1296 | break; |
1297 | default: | |
19203624 KH |
1298 | as_bad ("unknown suffix class"); |
1299 | ignore_rest_of_line (); | |
1e07b820 KH |
1300 | return; |
1301 | break; | |
1302 | }; | |
0d2bcfaf | 1303 | |
19203624 KH |
1304 | strcat (syntax, ((opcode == 0x3) ? "%a,%b" : ((class & SYNTAX_3OP) ? "%a,%b,%c" : "%b,%c"))); |
1305 | if (suffixcode < 2) | |
1306 | strcat (syntax, "%F"); | |
1307 | strcat (syntax, "%S%L"); | |
0d2bcfaf | 1308 | |
19203624 KH |
1309 | ext_op = (struct arc_opcode *) xmalloc (sizeof (struct arc_opcode)); |
1310 | if (NULL == ext_op) | |
0d2bcfaf | 1311 | { |
1e07b820 KH |
1312 | ignore_rest_of_line (); |
1313 | return; | |
0d2bcfaf NC |
1314 | } |
1315 | ||
19203624 | 1316 | ext_op->syntax = xstrdup (syntax); |
0d2bcfaf NC |
1317 | if (NULL == ext_op->syntax) |
1318 | { | |
1e07b820 KH |
1319 | ignore_rest_of_line (); |
1320 | return; | |
0d2bcfaf NC |
1321 | } |
1322 | ||
19203624 KH |
1323 | ext_op->mask = I (-1) | ((0x3 == opcode) ? C (-1) : 0); |
1324 | ext_op->value = I (opcode) | ((0x3 == opcode) ? C (subopcode) : 0); | |
0d2bcfaf NC |
1325 | ext_op->flags = class; |
1326 | ext_op->next_asm = arc_ext_opcodes; | |
1327 | ext_op->next_dis = arc_ext_opcodes; | |
1328 | arc_ext_opcodes = ext_op; | |
1329 | ||
19203624 KH |
1330 | /* OK, now that we know what this inst is, put a description in the |
1331 | arc extension section of the output file. */ | |
0d2bcfaf NC |
1332 | |
1333 | old_sec = now_seg; | |
1334 | old_subsec = now_subseg; | |
1335 | ||
19203624 | 1336 | arc_set_ext_seg (); |
0d2bcfaf | 1337 | |
19203624 KH |
1338 | p = frag_more (1); |
1339 | *p = 5 + name_len + 1; | |
1340 | p = frag_more (1); | |
0d2bcfaf | 1341 | *p = EXT_INSTRUCTION; |
19203624 | 1342 | p = frag_more (1); |
0d2bcfaf | 1343 | *p = opcode; |
19203624 | 1344 | p = frag_more (1); |
0d2bcfaf | 1345 | *p = subopcode; |
19203624 | 1346 | p = frag_more (1); |
0d2bcfaf | 1347 | *p = (class & (OP1_MUST_BE_IMM | OP1_IMM_IMPLIED) ? IGNORE_FIRST_OPD : 0); |
19203624 KH |
1348 | p = frag_more (name_len); |
1349 | strncpy (p, syntax, name_len); | |
1350 | p = frag_more (1); | |
0d2bcfaf NC |
1351 | *p = '\0'; |
1352 | ||
1353 | subseg_set (old_sec, old_subsec); | |
1354 | ||
19203624 | 1355 | demand_empty_rest_of_line (); |
252b5132 RH |
1356 | } |
1357 | ||
0d2bcfaf | 1358 | int |
19203624 | 1359 | arc_set_ext_seg () |
0d2bcfaf NC |
1360 | { |
1361 | if (!arcext_section) | |
1362 | { | |
1363 | arcext_section = subseg_new (".arcextmap", 0); | |
1364 | bfd_set_section_flags (stdoutput, arcext_section, | |
19203624 | 1365 | SEC_READONLY | SEC_HAS_CONTENTS); |
0d2bcfaf NC |
1366 | } |
1367 | else | |
1368 | subseg_set (arcext_section, 0); | |
1369 | return 1; | |
1370 | } | |
252b5132 RH |
1371 | |
1372 | static void | |
0d2bcfaf NC |
1373 | arc_common (localScope) |
1374 | int localScope; | |
252b5132 | 1375 | { |
0d2bcfaf | 1376 | char *name; |
252b5132 | 1377 | char c; |
0d2bcfaf | 1378 | char *p; |
19203624 | 1379 | int align, size; |
0d2bcfaf | 1380 | symbolS *symbolP; |
252b5132 | 1381 | |
0d2bcfaf NC |
1382 | name = input_line_pointer; |
1383 | c = get_symbol_end (); | |
bcee8eb8 | 1384 | /* just after name is now '\0' */ |
0d2bcfaf NC |
1385 | p = input_line_pointer; |
1386 | *p = c; | |
1387 | SKIP_WHITESPACE (); | |
1388 | ||
1389 | if (*input_line_pointer != ',') | |
252b5132 | 1390 | { |
0d2bcfaf | 1391 | as_bad ("expected comma after symbol name"); |
252b5132 RH |
1392 | ignore_rest_of_line (); |
1393 | return; | |
1394 | } | |
1395 | ||
bcee8eb8 | 1396 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf | 1397 | size = get_absolute_expression (); |
252b5132 | 1398 | |
0d2bcfaf NC |
1399 | if (size < 0) |
1400 | { | |
1401 | as_bad ("negative symbol length"); | |
1402 | ignore_rest_of_line (); | |
1403 | return; | |
1404 | } | |
252b5132 | 1405 | |
0d2bcfaf NC |
1406 | *p = 0; |
1407 | symbolP = symbol_find_or_make (name); | |
1408 | *p = c; | |
1409 | ||
1410 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
1411 | { | |
1412 | as_bad ("ignoring attempt to re-define symbol"); | |
1413 | ignore_rest_of_line (); | |
1414 | return; | |
1415 | } | |
19203624 KH |
1416 | if (((int) S_GET_VALUE (symbolP) != 0) \ |
1417 | && ((int) S_GET_VALUE (symbolP) != size)) | |
0d2bcfaf NC |
1418 | { |
1419 | as_warn ("length of symbol \"%s\" already %ld, ignoring %d", | |
1420 | S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size); | |
1421 | } | |
1422 | assert (symbolP->sy_frag == &zero_address_frag); | |
1423 | ||
0d2bcfaf NC |
1424 | /* Now parse the alignment field. This field is optional for |
1425 | local and global symbols. Default alignment is zero. */ | |
1426 | if (*input_line_pointer == ',') | |
1427 | { | |
1428 | input_line_pointer++; | |
1429 | align = get_absolute_expression (); | |
1430 | if (align < 0) | |
1431 | { | |
1432 | align = 0; | |
1433 | as_warn ("assuming symbol alignment of zero"); | |
1434 | } | |
1435 | } | |
252b5132 | 1436 | else |
0d2bcfaf NC |
1437 | align = 0; |
1438 | ||
1439 | if (localScope != 0) | |
252b5132 | 1440 | { |
0d2bcfaf NC |
1441 | segT old_sec; |
1442 | int old_subsec; | |
1443 | char *pfrag; | |
1444 | ||
1445 | old_sec = now_seg; | |
1446 | old_subsec = now_subseg; | |
1447 | record_alignment (bss_section, align); | |
bcee8eb8 | 1448 | subseg_set (bss_section, 0); /* ??? subseg_set (bss_section, 1); ??? */ |
0d2bcfaf NC |
1449 | |
1450 | if (align) | |
19203624 KH |
1451 | /* Do alignment. */ |
1452 | frag_align (align, 0, 0); | |
0d2bcfaf | 1453 | |
19203624 | 1454 | /* Detach from old frag. */ |
0d2bcfaf NC |
1455 | if (S_GET_SEGMENT (symbolP) == bss_section) |
1456 | symbolP->sy_frag->fr_symbol = NULL; | |
1457 | ||
1458 | symbolP->sy_frag = frag_now; | |
1459 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, | |
19203624 | 1460 | (offsetT) size, (char *) 0); |
0d2bcfaf NC |
1461 | *pfrag = 0; |
1462 | ||
1463 | S_SET_SIZE (symbolP, size); | |
1464 | S_SET_SEGMENT (symbolP, bss_section); | |
1465 | S_CLEAR_EXTERNAL (symbolP); | |
1466 | symbolP->local = 1; | |
1467 | subseg_set (old_sec, old_subsec); | |
1468 | } | |
1469 | else | |
1470 | { | |
1471 | S_SET_VALUE (symbolP, (valueT) size); | |
1472 | S_SET_ALIGN (symbolP, align); | |
1473 | S_SET_EXTERNAL (symbolP); | |
1474 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); | |
252b5132 | 1475 | } |
252b5132 | 1476 | |
0d2bcfaf NC |
1477 | symbolP->bsym->flags |= BSF_OBJECT; |
1478 | ||
1479 | demand_empty_rest_of_line (); | |
1480 | return; | |
252b5132 | 1481 | } |
0d2bcfaf | 1482 | \f |
0d2bcfaf | 1483 | /* Select the cpu we're assembling for. */ |
252b5132 RH |
1484 | |
1485 | static void | |
0d2bcfaf | 1486 | arc_option (ignore) |
19203624 | 1487 | int ignore ATTRIBUTE_UNUSED; |
252b5132 | 1488 | { |
0d2bcfaf | 1489 | int mach; |
252b5132 | 1490 | char c; |
0d2bcfaf | 1491 | char *cpu; |
252b5132 | 1492 | |
0d2bcfaf | 1493 | cpu = input_line_pointer; |
252b5132 | 1494 | c = get_symbol_end (); |
0d2bcfaf | 1495 | mach = arc_get_mach (cpu); |
252b5132 RH |
1496 | *input_line_pointer = c; |
1497 | ||
0d2bcfaf NC |
1498 | /* If an instruction has already been seen, it's too late. */ |
1499 | if (cpu_tables_init_p) | |
252b5132 | 1500 | { |
0d2bcfaf | 1501 | as_bad ("\".option\" directive must appear before any instructions"); |
252b5132 RH |
1502 | ignore_rest_of_line (); |
1503 | return; | |
1504 | } | |
252b5132 | 1505 | |
0d2bcfaf NC |
1506 | if (mach == -1) |
1507 | goto bad_cpu; | |
1508 | ||
1509 | if (mach_type_specified_p && mach != arc_mach_type) | |
252b5132 | 1510 | { |
0d2bcfaf | 1511 | as_bad ("\".option\" directive conflicts with initial definition"); |
252b5132 RH |
1512 | ignore_rest_of_line (); |
1513 | return; | |
1514 | } | |
0d2bcfaf NC |
1515 | else |
1516 | { | |
1517 | /* The cpu may have been selected on the command line. */ | |
1518 | if (mach != arc_mach_type) | |
1519 | as_warn ("\".option\" directive overrides command-line (default) value"); | |
1520 | arc_mach_type = mach; | |
1521 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_arc, mach)) | |
1522 | as_fatal ("could not set architecture and machine"); | |
1523 | mach_type_specified_p = 1; | |
1524 | } | |
252b5132 | 1525 | demand_empty_rest_of_line (); |
0d2bcfaf NC |
1526 | return; |
1527 | ||
1528 | bad_cpu: | |
1529 | as_bad ("invalid identifier for \".option\""); | |
1530 | ignore_rest_of_line (); | |
252b5132 | 1531 | } |
252b5132 | 1532 | \f |
19203624 KH |
1533 | /* Turn a string in input_line_pointer into a floating point constant |
1534 | of type TYPE, and store the appropriate bytes in *LITP. The number | |
1535 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
1536 | returned, or NULL on OK. */ | |
252b5132 | 1537 | |
0d2bcfaf | 1538 | /* Equal to MAX_PRECISION in atof-ieee.c */ |
252b5132 RH |
1539 | #define MAX_LITTLENUMS 6 |
1540 | ||
1541 | char * | |
1542 | md_atof (type, litP, sizeP) | |
89b57c9a | 1543 | int type; |
19203624 KH |
1544 | char *litP; |
1545 | int *sizeP; | |
252b5132 RH |
1546 | { |
1547 | int prec; | |
1548 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1549 | LITTLENUM_TYPE *wordP; | |
1550 | char *t; | |
89b57c9a | 1551 | char * atof_ieee PARAMS ((char *, int, LITTLENUM_TYPE *)); |
252b5132 RH |
1552 | |
1553 | switch (type) | |
1554 | { | |
1555 | case 'f': | |
1556 | case 'F': | |
1557 | prec = 2; | |
1558 | break; | |
1559 | ||
1560 | case 'd': | |
1561 | case 'D': | |
1562 | prec = 4; | |
1563 | break; | |
1564 | ||
1565 | default: | |
1566 | *sizeP = 0; | |
0d2bcfaf | 1567 | return "bad call to md_atof"; |
252b5132 RH |
1568 | } |
1569 | ||
1570 | t = atof_ieee (input_line_pointer, type, words); | |
1571 | if (t) | |
1572 | input_line_pointer = t; | |
1573 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1574 | for (wordP = words; prec--;) | |
1575 | { | |
1576 | md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
1577 | litP += sizeof (LITTLENUM_TYPE); | |
1578 | } | |
1579 | ||
1580 | return NULL; | |
1581 | } | |
1582 | ||
1583 | /* Write a value out to the object file, using the appropriate | |
1584 | endianness. */ | |
1585 | ||
1586 | void | |
1587 | md_number_to_chars (buf, val, n) | |
1588 | char *buf; | |
1589 | valueT val; | |
1590 | int n; | |
1591 | { | |
1592 | if (target_big_endian) | |
1593 | number_to_chars_bigendian (buf, val, n); | |
1594 | else | |
1595 | number_to_chars_littleendian (buf, val, n); | |
1596 | } | |
1597 | ||
bfb32b52 | 1598 | /* Round up a section size to the appropriate boundary. */ |
252b5132 RH |
1599 | |
1600 | valueT | |
1601 | md_section_align (segment, size) | |
1602 | segT segment; | |
1603 | valueT size; | |
1604 | { | |
1605 | int align = bfd_get_section_alignment (stdoutput, segment); | |
1606 | ||
1607 | return ((size + (1 << align) - 1) & (-1 << align)); | |
1608 | } | |
1609 | ||
1610 | /* We don't have any form of relaxing. */ | |
1611 | ||
1612 | int | |
1613 | md_estimate_size_before_relax (fragp, seg) | |
4a314ec8 NC |
1614 | fragS *fragp ATTRIBUTE_UNUSED; |
1615 | asection *seg ATTRIBUTE_UNUSED; | |
252b5132 | 1616 | { |
0d2bcfaf NC |
1617 | as_fatal (_("md_estimate_size_before_relax\n")); |
1618 | return 1; | |
252b5132 RH |
1619 | } |
1620 | ||
1621 | /* Convert a machine dependent frag. We never generate these. */ | |
1622 | ||
1623 | void | |
1624 | md_convert_frag (abfd, sec, fragp) | |
4a314ec8 NC |
1625 | bfd *abfd ATTRIBUTE_UNUSED; |
1626 | asection *sec ATTRIBUTE_UNUSED; | |
1627 | fragS *fragp ATTRIBUTE_UNUSED; | |
252b5132 | 1628 | { |
0d2bcfaf NC |
1629 | as_fatal (_("md_convert_frag\n")); |
1630 | } | |
1631 | ||
1632 | void | |
19203624 | 1633 | arc_code_symbol (expressionP) |
0d2bcfaf NC |
1634 | expressionS *expressionP; |
1635 | { | |
d3ecfc59 | 1636 | if (expressionP->X_op == O_symbol && expressionP->X_add_number == 0) |
0d2bcfaf | 1637 | { |
1e07b820 KH |
1638 | expressionS two; |
1639 | expressionP->X_op = O_right_shift; | |
bcee8eb8 | 1640 | expressionP->X_add_symbol->sy_value.X_op = O_constant; |
1e07b820 KH |
1641 | two.X_op = O_constant; |
1642 | two.X_add_symbol = two.X_op_symbol = NULL; | |
1643 | two.X_add_number = 2; | |
1644 | expressionP->X_op_symbol = make_expr_symbol (&two); | |
0d2bcfaf | 1645 | } |
bcee8eb8 | 1646 | /* Allow %st(sym1-sym2) */ |
19203624 KH |
1647 | else if (expressionP->X_op == O_subtract |
1648 | && expressionP->X_add_symbol != NULL | |
1649 | && expressionP->X_op_symbol != NULL | |
1650 | && expressionP->X_add_number == 0) | |
0d2bcfaf | 1651 | { |
1e07b820 KH |
1652 | expressionS two; |
1653 | expressionP->X_add_symbol = make_expr_symbol (expressionP); | |
1654 | expressionP->X_op = O_right_shift; | |
1655 | two.X_op = O_constant; | |
1656 | two.X_add_symbol = two.X_op_symbol = NULL; | |
1657 | two.X_add_number = 2; | |
1658 | expressionP->X_op_symbol = make_expr_symbol (&two); | |
0d2bcfaf NC |
1659 | } |
1660 | else | |
1661 | { | |
1e07b820 KH |
1662 | as_bad ("expression too complex code symbol"); |
1663 | return; | |
0d2bcfaf | 1664 | } |
252b5132 RH |
1665 | } |
1666 | ||
1667 | /* Parse an operand that is machine-specific. | |
1668 | ||
1669 | The ARC has a special %-op to adjust addresses so they're usable in | |
1670 | branches. The "st" is short for the STatus register. | |
1671 | ??? Later expand this to take a flags value too. | |
1672 | ||
1673 | ??? We can't create new expression types so we map the %-op's onto the | |
1674 | existing syntax. This means that the user could use the chosen syntax | |
bfb32b52 | 1675 | to achieve the same effect. */ |
252b5132 | 1676 | |
bfb32b52 | 1677 | void |
252b5132 RH |
1678 | md_operand (expressionP) |
1679 | expressionS *expressionP; | |
1680 | { | |
1681 | char *p = input_line_pointer; | |
1682 | ||
0d2bcfaf | 1683 | if (*p == '%') |
19203624 | 1684 | if (strncmp (p, "%st(", 4) == 0) |
0d2bcfaf | 1685 | { |
1e07b820 KH |
1686 | input_line_pointer += 4; |
1687 | expression (expressionP); | |
1688 | if (*input_line_pointer != ')') | |
1689 | { | |
1690 | as_bad ("missing ')' in %%-op"); | |
1691 | return; | |
1692 | } | |
1693 | ++input_line_pointer; | |
19203624 | 1694 | arc_code_symbol (expressionP); |
0d2bcfaf | 1695 | } |
1e07b820 | 1696 | else |
bcee8eb8 AM |
1697 | { |
1698 | /* It could be a register. */ | |
19203624 | 1699 | int i, l; |
1e07b820 KH |
1700 | struct arc_ext_operand_value *ext_oper = arc_ext_operands; |
1701 | p++; | |
0d2bcfaf | 1702 | |
1e07b820 KH |
1703 | while (ext_oper) |
1704 | { | |
19203624 | 1705 | l = strlen (ext_oper->operand.name); |
3882b010 | 1706 | if (!strncmp (p, ext_oper->operand.name, l) && !ISALNUM (*(p + l))) |
1e07b820 KH |
1707 | { |
1708 | input_line_pointer += l + 1; | |
1709 | expressionP->X_op = O_register; | |
1710 | expressionP->X_add_number = (int) &ext_oper->operand; | |
1711 | return; | |
1712 | } | |
1713 | ext_oper = ext_oper->next; | |
1714 | } | |
1715 | for (i = 0; i < arc_reg_names_count; i++) | |
1716 | { | |
19203624 | 1717 | l = strlen (arc_reg_names[i].name); |
3882b010 | 1718 | if (!strncmp (p, arc_reg_names[i].name, l) && !ISALNUM (*(p + l))) |
1e07b820 KH |
1719 | { |
1720 | input_line_pointer += l + 1; | |
1721 | expressionP->X_op = O_register; | |
19203624 | 1722 | expressionP->X_add_number = (int) &arc_reg_names[i]; |
1e07b820 KH |
1723 | break; |
1724 | } | |
1725 | } | |
0d2bcfaf | 1726 | } |
252b5132 RH |
1727 | } |
1728 | ||
1729 | /* We have no need to default values of symbols. | |
1730 | We could catch register names here, but that is handled by inserting | |
1731 | them all in the symbol table to begin with. */ | |
1732 | ||
1733 | symbolS * | |
1734 | md_undefined_symbol (name) | |
4a314ec8 | 1735 | char *name ATTRIBUTE_UNUSED; |
252b5132 RH |
1736 | { |
1737 | return 0; | |
1738 | } | |
1739 | \f | |
1740 | /* Functions concerning expressions. */ | |
1741 | ||
1742 | /* Parse a .byte, .word, etc. expression. | |
1743 | ||
1744 | Values for the status register are specified with %st(label). | |
1745 | `label' will be right shifted by 2. */ | |
1746 | ||
1747 | void | |
1748 | arc_parse_cons_expression (exp, nbytes) | |
19203624 KH |
1749 | expressionS *exp; |
1750 | unsigned int nbytes ATTRIBUTE_UNUSED; | |
252b5132 | 1751 | { |
0d2bcfaf NC |
1752 | char *p = input_line_pointer; |
1753 | int code_symbol_fix = 0; | |
1754 | ||
19203624 KH |
1755 | for (; ! is_end_of_line[(unsigned char) *p]; p++) |
1756 | if (*p == '@' && !strncmp (p, "@h30", 4)) | |
0d2bcfaf | 1757 | { |
1e07b820 | 1758 | code_symbol_fix = 1; |
19203624 | 1759 | strcpy (p, "; "); |
0d2bcfaf | 1760 | } |
1e07b820 KH |
1761 | expr (0, exp); |
1762 | if (code_symbol_fix) | |
1763 | { | |
19203624 | 1764 | arc_code_symbol (exp); |
1e07b820 KH |
1765 | input_line_pointer = p; |
1766 | } | |
252b5132 RH |
1767 | } |
1768 | ||
1769 | /* Record a fixup for a cons expression. */ | |
1770 | ||
1771 | void | |
1772 | arc_cons_fix_new (frag, where, nbytes, exp) | |
1773 | fragS *frag; | |
1774 | int where; | |
1775 | int nbytes; | |
1776 | expressionS *exp; | |
1777 | { | |
1778 | if (nbytes == 4) | |
1779 | { | |
1780 | int reloc_type; | |
1781 | expressionS exptmp; | |
1782 | ||
1783 | /* This may be a special ARC reloc (eg: %st()). */ | |
1784 | reloc_type = get_arc_exp_reloc_type (1, BFD_RELOC_32, exp, &exptmp); | |
1785 | fix_new_exp (frag, where, nbytes, &exptmp, 0, reloc_type); | |
1786 | } | |
1787 | else | |
1788 | { | |
1789 | fix_new_exp (frag, where, nbytes, exp, 0, | |
1790 | nbytes == 2 ? BFD_RELOC_16 | |
1791 | : nbytes == 8 ? BFD_RELOC_64 | |
1792 | : BFD_RELOC_32); | |
1793 | } | |
1794 | } | |
1795 | \f | |
1796 | /* Functions concerning relocs. */ | |
1797 | ||
1798 | /* The location from which a PC relative jump should be calculated, | |
1799 | given a PC relative reloc. */ | |
1800 | ||
bfb32b52 | 1801 | long |
252b5132 RH |
1802 | md_pcrel_from (fixP) |
1803 | fixS *fixP; | |
1804 | { | |
252b5132 RH |
1805 | /* Return the address of the delay slot. */ |
1806 | return fixP->fx_frag->fr_address + fixP->fx_where + fixP->fx_size; | |
1807 | } | |
1808 | ||
1809 | /* Compute the reloc type of an expression. | |
1810 | The possibly modified expression is stored in EXPNEW. | |
1811 | ||
1812 | This is used to convert the expressions generated by the %-op's into | |
1813 | the appropriate operand type. It is called for both data in instructions | |
1814 | (operands) and data outside instructions (variables, debugging info, etc.). | |
1815 | ||
1816 | Currently supported %-ops: | |
1817 | ||
1818 | %st(symbol): represented as "symbol >> 2" | |
1819 | "st" is short for STatus as in the status register (pc) | |
1820 | ||
1821 | DEFAULT_TYPE is the type to use if no special processing is required. | |
1822 | ||
1823 | DATA_P is non-zero for data or limm values, zero for insn operands. | |
1824 | Remember that the opcode "insertion fns" cannot be used on data, they're | |
1825 | only for inserting operands into insns. They also can't be used for limm | |
1826 | values as the insertion routines don't handle limm values. When called for | |
1827 | insns we return fudged reloc types (real_value - BFD_RELOC_UNUSED). When | |
1828 | called for data or limm values we use real reloc types. */ | |
1829 | ||
1830 | static int | |
1831 | get_arc_exp_reloc_type (data_p, default_type, exp, expnew) | |
1832 | int data_p; | |
1833 | int default_type; | |
1834 | expressionS *exp; | |
1835 | expressionS *expnew; | |
1836 | { | |
1837 | /* If the expression is "symbol >> 2" we must change it to just "symbol", | |
1838 | as fix_new_exp can't handle it. Similarily for (symbol - symbol) >> 2. | |
1839 | That's ok though. What's really going on here is that we're using | |
1840 | ">> 2" as a special syntax for specifying BFD_RELOC_ARC_B26. */ | |
1841 | ||
1842 | if (exp->X_op == O_right_shift | |
1843 | && exp->X_op_symbol != NULL | |
0d2bcfaf NC |
1844 | && exp->X_op_symbol->sy_value.X_op == O_constant |
1845 | && exp->X_op_symbol->sy_value.X_add_number == 2 | |
252b5132 RH |
1846 | && exp->X_add_number == 0) |
1847 | { | |
1848 | if (exp->X_add_symbol != NULL | |
0d2bcfaf NC |
1849 | && (exp->X_add_symbol->sy_value.X_op == O_constant |
1850 | || exp->X_add_symbol->sy_value.X_op == O_symbol)) | |
252b5132 RH |
1851 | { |
1852 | *expnew = *exp; | |
1853 | expnew->X_op = O_symbol; | |
1854 | expnew->X_op_symbol = NULL; | |
1855 | return data_p ? BFD_RELOC_ARC_B26 : arc_operand_map['J']; | |
1856 | } | |
1857 | else if (exp->X_add_symbol != NULL | |
0d2bcfaf | 1858 | && exp->X_add_symbol->sy_value.X_op == O_subtract) |
252b5132 | 1859 | { |
0d2bcfaf | 1860 | *expnew = exp->X_add_symbol->sy_value; |
252b5132 RH |
1861 | return data_p ? BFD_RELOC_ARC_B26 : arc_operand_map['J']; |
1862 | } | |
1863 | } | |
1864 | ||
1865 | *expnew = *exp; | |
1866 | return default_type; | |
1867 | } | |
1868 | ||
1869 | /* Apply a fixup to the object code. This is called for all the | |
1870 | fixups we generated by the call to fix_new_exp, above. In the call | |
1871 | above we used a reloc code which was the largest legal reloc code | |
1872 | plus the operand index. Here we undo that to recover the operand | |
1873 | index. At this point all symbol values should be fully resolved, | |
1874 | and we attempt to completely resolve the reloc. If we can not do | |
1875 | that, we determine the correct reloc code and put it back in the fixup. */ | |
1876 | ||
94f592af NC |
1877 | void |
1878 | md_apply_fix3 (fixP, valP, seg) | |
252b5132 | 1879 | fixS *fixP; |
94f592af | 1880 | valueT * valP; |
252b5132 RH |
1881 | segT seg; |
1882 | { | |
19203624 KH |
1883 | #if 0 |
1884 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
1885 | #endif | |
94f592af | 1886 | valueT value = * valP; |
252b5132 | 1887 | |
252b5132 | 1888 | if (fixP->fx_addsy == (symbolS *) NULL) |
94f592af NC |
1889 | fixP->fx_done = 1; |
1890 | ||
252b5132 RH |
1891 | else if (fixP->fx_pcrel) |
1892 | { | |
a161fe53 AM |
1893 | /* Hack around bfd_install_relocation brain damage. */ |
1894 | if (S_GET_SEGMENT (fixP->fx_addsy) != seg) | |
252b5132 RH |
1895 | value += md_pcrel_from (fixP); |
1896 | } | |
a161fe53 AM |
1897 | |
1898 | /* We can't actually support subtracting a symbol. */ | |
1899 | if (fixP->fx_subsy != NULL) | |
1900 | as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex")); | |
252b5132 RH |
1901 | |
1902 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) | |
1903 | { | |
1904 | int opindex; | |
1905 | const struct arc_operand *operand; | |
1906 | char *where; | |
1907 | arc_insn insn; | |
1908 | ||
1909 | opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; | |
1910 | ||
1911 | operand = &arc_operands[opindex]; | |
1912 | ||
1913 | /* Fetch the instruction, insert the fully resolved operand | |
1914 | value, and stuff the instruction back again. */ | |
1915 | where = fixP->fx_frag->fr_literal + fixP->fx_where; | |
1916 | if (target_big_endian) | |
1917 | insn = bfd_getb32 ((unsigned char *) where); | |
1918 | else | |
1919 | insn = bfd_getl32 ((unsigned char *) where); | |
1920 | insn = arc_insert_operand (insn, operand, -1, NULL, (offsetT) value, | |
1921 | fixP->fx_file, fixP->fx_line); | |
1922 | if (target_big_endian) | |
1923 | bfd_putb32 ((bfd_vma) insn, (unsigned char *) where); | |
1924 | else | |
1925 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); | |
1926 | ||
1927 | if (fixP->fx_done) | |
1928 | { | |
1929 | /* Nothing else to do here. */ | |
94f592af | 1930 | return; |
252b5132 RH |
1931 | } |
1932 | ||
1933 | /* Determine a BFD reloc value based on the operand information. | |
1934 | We are only prepared to turn a few of the operands into relocs. | |
1935 | !!! Note that we can't handle limm values here. Since we're using | |
1936 | implicit addends the addend must be inserted into the instruction, | |
1937 | however, the opcode insertion routines currently do nothing with | |
1938 | limm values. */ | |
1939 | if (operand->fmt == 'B') | |
1940 | { | |
1941 | assert ((operand->flags & ARC_OPERAND_RELATIVE_BRANCH) != 0 | |
1942 | && operand->bits == 20 | |
1943 | && operand->shift == 7); | |
1944 | fixP->fx_r_type = BFD_RELOC_ARC_B22_PCREL; | |
1945 | } | |
0d2bcfaf | 1946 | else if (operand->fmt == 'J') |
252b5132 RH |
1947 | { |
1948 | assert ((operand->flags & ARC_OPERAND_ABSOLUTE_BRANCH) != 0 | |
1949 | && operand->bits == 24 | |
1950 | && operand->shift == 32); | |
1951 | fixP->fx_r_type = BFD_RELOC_ARC_B26; | |
1952 | } | |
0d2bcfaf | 1953 | else if (operand->fmt == 'L') |
252b5132 RH |
1954 | { |
1955 | assert ((operand->flags & ARC_OPERAND_LIMM) != 0 | |
1956 | && operand->bits == 32 | |
1957 | && operand->shift == 32); | |
1958 | fixP->fx_r_type = BFD_RELOC_32; | |
1959 | } | |
1960 | else | |
1961 | { | |
1962 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
0d2bcfaf | 1963 | "unresolved expression that must be resolved"); |
252b5132 | 1964 | fixP->fx_done = 1; |
94f592af | 1965 | return; |
252b5132 RH |
1966 | } |
1967 | } | |
1968 | else | |
1969 | { | |
1970 | switch (fixP->fx_r_type) | |
1971 | { | |
1972 | case BFD_RELOC_8: | |
1973 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
1974 | value, 1); | |
1975 | break; | |
1976 | case BFD_RELOC_16: | |
1977 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
1978 | value, 2); | |
1979 | break; | |
1980 | case BFD_RELOC_32: | |
1981 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
1982 | value, 4); | |
1983 | break; | |
1984 | #if 0 | |
1985 | case BFD_RELOC_64: | |
1986 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
1987 | value, 8); | |
1988 | break; | |
1989 | #endif | |
1990 | case BFD_RELOC_ARC_B26: | |
1991 | /* If !fixP->fx_done then `value' is an implicit addend. | |
1992 | We must shift it right by 2 in this case as well because the | |
1993 | linker performs the relocation and then adds this in (as opposed | |
1994 | to adding this in and then shifting right by 2). */ | |
1995 | value >>= 2; | |
1996 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
1997 | value, 4); | |
1998 | break; | |
1999 | default: | |
2000 | abort (); | |
2001 | } | |
2002 | } | |
252b5132 RH |
2003 | } |
2004 | ||
2005 | /* Translate internal representation of relocation info to BFD target | |
2006 | format. */ | |
2007 | ||
2008 | arelent * | |
2009 | tc_gen_reloc (section, fixP) | |
4a314ec8 | 2010 | asection *section ATTRIBUTE_UNUSED; |
252b5132 RH |
2011 | fixS *fixP; |
2012 | { | |
2013 | arelent *reloc; | |
2014 | ||
2015 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
2016 | ||
0d2bcfaf | 2017 | reloc->sym_ptr_ptr = &fixP->fx_addsy->bsym; |
252b5132 RH |
2018 | reloc->address = fixP->fx_frag->fr_address + fixP->fx_where; |
2019 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
2020 | if (reloc->howto == (reloc_howto_type *) NULL) | |
2021 | { | |
2022 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
0d2bcfaf | 2023 | "internal error: can't export reloc type %d (`%s')", |
19203624 KH |
2024 | fixP->fx_r_type, |
2025 | bfd_get_reloc_code_name (fixP->fx_r_type)); | |
252b5132 RH |
2026 | return NULL; |
2027 | } | |
2028 | ||
2029 | assert (!fixP->fx_pcrel == !reloc->howto->pc_relative); | |
2030 | ||
19203624 | 2031 | /* Set addend to account for PC being advanced one insn before the |
a161fe53 | 2032 | target address is computed. */ |
252b5132 | 2033 | |
19203624 | 2034 | reloc->addend = (fixP->fx_pcrel ? -4 : 0); |
252b5132 | 2035 | |
0d2bcfaf | 2036 | return reloc; |
252b5132 | 2037 | } |