Commit | Line | Data |
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252b5132 | 1 | /* tc-arc.c -- Assembler for the ARC |
f7e42eb4 NC |
2 | Copyright 1994, 1995, 1997, 1999, 2000, 2001 |
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" |
3882b010 | 26 | #include "safe-ctype.h" |
252b5132 RH |
27 | #include "subsegs.h" |
28 | #include "opcode/arc.h" | |
0d2bcfaf | 29 | #include "../opcodes/arc-ext.h" |
252b5132 | 30 | #include "elf/arc.h" |
bcee8eb8 | 31 | #include "dwarf2dbg.h" |
252b5132 RH |
32 | |
33 | extern int arc_get_mach PARAMS ((char *)); | |
0d2bcfaf NC |
34 | extern int arc_operand_type PARAMS ((int)); |
35 | extern int arc_insn_not_jl PARAMS ((arc_insn)); | |
36 | extern int arc_limm_fixup_adjust PARAMS ((arc_insn)); | |
37 | extern int arc_get_noshortcut_flag PARAMS ((void)); | |
38 | extern int arc_set_ext_seg PARAMS ((void)); | |
19203624 | 39 | extern void arc_code_symbol PARAMS ((expressionS *)); |
252b5132 RH |
40 | |
41 | static arc_insn arc_insert_operand PARAMS ((arc_insn, | |
42 | const struct arc_operand *, int, | |
43 | const struct arc_operand_value *, | |
44 | offsetT, char *, unsigned int)); | |
45 | static void arc_common PARAMS ((int)); | |
0d2bcfaf NC |
46 | static void arc_extinst PARAMS ((int)); |
47 | static void arc_extoper PARAMS ((int)); | |
48 | static void arc_option PARAMS ((int)); | |
89b57c9a | 49 | static int get_arc_exp_reloc_type PARAMS ((int, int, expressionS *, |
252b5132 RH |
50 | expressionS *)); |
51 | ||
89b57c9a NC |
52 | static void init_opcode_tables PARAMS ((int)); |
53 | ||
0d2bcfaf NC |
54 | const struct suffix_classes { |
55 | char *name; | |
56 | int len; | |
57 | } suffixclass[] = { | |
58 | { "SUFFIX_COND|SUFFIX_FLAG",23 }, | |
59 | { "SUFFIX_FLAG", 11 }, | |
60 | { "SUFFIX_COND", 11 }, | |
61 | { "SUFFIX_NONE", 11 } | |
62 | }; | |
63 | ||
bfb32b52 | 64 | #define MAXSUFFIXCLASS (sizeof (suffixclass) / sizeof (struct suffix_classes)) |
0d2bcfaf NC |
65 | |
66 | const struct syntax_classes { | |
67 | char *name; | |
68 | int len; | |
69 | int class; | |
70 | } syntaxclass[] = { | |
71 | { "SYNTAX_3OP|OP1_MUST_BE_IMM", 26, SYNTAX_3OP|OP1_MUST_BE_IMM|SYNTAX_VALID }, | |
72 | { "OP1_MUST_BE_IMM|SYNTAX_3OP", 26, OP1_MUST_BE_IMM|SYNTAX_3OP|SYNTAX_VALID }, | |
73 | { "SYNTAX_2OP|OP1_IMM_IMPLIED", 26, SYNTAX_2OP|OP1_IMM_IMPLIED|SYNTAX_VALID }, | |
74 | { "OP1_IMM_IMPLIED|SYNTAX_2OP", 26, OP1_IMM_IMPLIED|SYNTAX_2OP|SYNTAX_VALID }, | |
75 | { "SYNTAX_3OP", 10, SYNTAX_3OP|SYNTAX_VALID }, | |
76 | { "SYNTAX_2OP", 10, SYNTAX_2OP|SYNTAX_VALID } | |
77 | }; | |
78 | ||
bfb32b52 | 79 | #define MAXSYNTAXCLASS (sizeof (syntaxclass) / sizeof (struct syntax_classes)) |
0d2bcfaf | 80 | |
19203624 | 81 | const pseudo_typeS md_pseudo_table[] = { |
bcee8eb8 | 82 | { "align", s_align_bytes, 0 }, /* Defaulting is invalid (0). */ |
0d2bcfaf | 83 | { "comm", arc_common, 0 }, |
252b5132 | 84 | { "common", arc_common, 0 }, |
0d2bcfaf NC |
85 | { "lcomm", arc_common, 1 }, |
86 | { "lcommon", arc_common, 1 }, | |
87 | { "2byte", cons, 2 }, | |
88 | { "half", cons, 2 }, | |
89 | { "short", cons, 2 }, | |
90 | { "3byte", cons, 3 }, | |
91 | { "4byte", cons, 4 }, | |
252b5132 | 92 | { "word", cons, 4 }, |
0d2bcfaf | 93 | { "option", arc_option, 0 }, |
bcee8eb8 | 94 | { "cpu", arc_option, 0 }, |
0d2bcfaf | 95 | { "block", s_space, 0 }, |
bcee8eb8 AM |
96 | { "file", dwarf2_directive_file, 0 }, |
97 | { "loc", dwarf2_directive_loc, 0 }, | |
0d2bcfaf NC |
98 | { "extcondcode", arc_extoper, 0 }, |
99 | { "extcoreregister", arc_extoper, 1 }, | |
100 | { "extauxregister", arc_extoper, 2 }, | |
101 | { "extinstruction", arc_extinst, 0 }, | |
252b5132 RH |
102 | { NULL, 0, 0 }, |
103 | }; | |
104 | ||
105 | /* This array holds the chars that always start a comment. If the | |
bcee8eb8 | 106 | pre-processor is disabled, these aren't very useful. */ |
252b5132 RH |
107 | const char comment_chars[] = "#;"; |
108 | ||
109 | /* This array holds the chars that only start a comment at the beginning of | |
110 | a line. If the line seems to have the form '# 123 filename' | |
111 | .line and .file directives will appear in the pre-processed output */ | |
112 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
113 | first line of the input file. This is because the compiler outputs | |
bfb32b52 | 114 | #NO_APP at the beginning of its output. */ |
252b5132 | 115 | /* Also note that comments started like this one will always |
bfb32b52 | 116 | work if '/' isn't otherwise defined. */ |
252b5132 RH |
117 | const char line_comment_chars[] = "#"; |
118 | ||
119 | const char line_separator_chars[] = ""; | |
120 | ||
bcee8eb8 | 121 | /* Chars that can be used to separate mant from exp in floating point nums. */ |
252b5132 RH |
122 | const char EXP_CHARS[] = "eE"; |
123 | ||
bcee8eb8 AM |
124 | /* Chars that mean this number is a floating point constant |
125 | As in 0f12.456 or 0d1.2345e12. */ | |
252b5132 RH |
126 | const char FLT_CHARS[] = "rRsSfFdD"; |
127 | ||
128 | /* Byte order. */ | |
129 | extern int target_big_endian; | |
130 | const char *arc_target_format = DEFAULT_TARGET_FORMAT; | |
131 | static int byte_order = DEFAULT_BYTE_ORDER; | |
132 | ||
0d2bcfaf NC |
133 | static segT arcext_section; |
134 | ||
135 | /* One of bfd_mach_arc_n. */ | |
bcee8eb8 | 136 | static int arc_mach_type = bfd_mach_arc_6; |
252b5132 RH |
137 | |
138 | /* Non-zero if the cpu type has been explicitly specified. */ | |
139 | static int mach_type_specified_p = 0; | |
140 | ||
141 | /* Non-zero if opcode tables have been initialized. | |
bcee8eb8 | 142 | A .option command must appear before any instructions. */ |
252b5132 RH |
143 | static int cpu_tables_init_p = 0; |
144 | ||
145 | static struct hash_control *arc_suffix_hash = NULL; | |
146 | \f | |
147 | const char *md_shortopts = ""; | |
19203624 | 148 | struct option md_longopts[] = { |
252b5132 | 149 | #define OPTION_EB (OPTION_MD_BASE + 0) |
bcee8eb8 | 150 | { "EB", no_argument, NULL, OPTION_EB }, |
252b5132 | 151 | #define OPTION_EL (OPTION_MD_BASE + 1) |
bcee8eb8 | 152 | { "EL", no_argument, NULL, OPTION_EL }, |
0d2bcfaf | 153 | #define OPTION_ARC5 (OPTION_MD_BASE + 2) |
bcee8eb8 AM |
154 | { "marc5", no_argument, NULL, OPTION_ARC5 }, |
155 | { "pre-v6", no_argument, NULL, OPTION_ARC5 }, | |
0d2bcfaf | 156 | #define OPTION_ARC6 (OPTION_MD_BASE + 3) |
bcee8eb8 | 157 | { "marc6", no_argument, NULL, OPTION_ARC6 }, |
0d2bcfaf | 158 | #define OPTION_ARC7 (OPTION_MD_BASE + 4) |
bcee8eb8 | 159 | { "marc7", no_argument, NULL, OPTION_ARC7 }, |
0d2bcfaf | 160 | #define OPTION_ARC8 (OPTION_MD_BASE + 5) |
bcee8eb8 | 161 | { "marc8", no_argument, NULL, OPTION_ARC8 }, |
0d2bcfaf | 162 | #define OPTION_ARC (OPTION_MD_BASE + 6) |
bcee8eb8 | 163 | { "marc", no_argument, NULL, OPTION_ARC }, |
252b5132 RH |
164 | { NULL, no_argument, NULL, 0 } |
165 | }; | |
166 | size_t md_longopts_size = sizeof (md_longopts); | |
167 | ||
0d2bcfaf NC |
168 | #define IS_SYMBOL_OPERAND(o) \ |
169 | ((o) == 'b' || (o) == 'c' || (o) == 's' || (o) == 'o' || (o) == 'O') | |
170 | ||
19203624 | 171 | struct arc_operand_value *get_ext_suffix (char *s); |
0d2bcfaf | 172 | |
19203624 KH |
173 | /* Invocation line includes a switch not recognized by the base assembler. |
174 | See if it's a processor-specific option. */ | |
252b5132 RH |
175 | |
176 | int | |
177 | md_parse_option (c, arg) | |
178 | int c; | |
4a314ec8 | 179 | char *arg ATTRIBUTE_UNUSED; |
252b5132 RH |
180 | { |
181 | switch (c) | |
1e07b820 | 182 | { |
0d2bcfaf NC |
183 | case OPTION_ARC5: |
184 | arc_mach_type = bfd_mach_arc_5; | |
185 | break; | |
bcee8eb8 | 186 | case OPTION_ARC: |
0d2bcfaf NC |
187 | case OPTION_ARC6: |
188 | arc_mach_type = bfd_mach_arc_6; | |
189 | break; | |
190 | case OPTION_ARC7: | |
191 | arc_mach_type = bfd_mach_arc_7; | |
192 | break; | |
193 | case OPTION_ARC8: | |
194 | arc_mach_type = bfd_mach_arc_8; | |
195 | break; | |
252b5132 RH |
196 | case OPTION_EB: |
197 | byte_order = BIG_ENDIAN; | |
198 | arc_target_format = "elf32-bigarc"; | |
199 | break; | |
200 | case OPTION_EL: | |
201 | byte_order = LITTLE_ENDIAN; | |
202 | arc_target_format = "elf32-littlearc"; | |
203 | break; | |
204 | default: | |
205 | return 0; | |
1e07b820 | 206 | } |
252b5132 RH |
207 | return 1; |
208 | } | |
209 | ||
210 | void | |
211 | md_show_usage (stream) | |
212 | FILE *stream; | |
213 | { | |
0d2bcfaf NC |
214 | fprintf (stream, "\ |
215 | ARC Options:\n\ | |
216 | -marc[5|6|7|8] select processor variant (default arc%d)\n\ | |
217 | -EB assemble code for a big endian cpu\n\ | |
218 | -EL assemble code for a little endian cpu\n", arc_mach_type + 5); | |
252b5132 RH |
219 | } |
220 | ||
221 | /* This function is called once, at assembler startup time. It should | |
222 | set up all the tables, etc. that the MD part of the assembler will need. | |
bcee8eb8 | 223 | Opcode selection is deferred until later because we might see a .option |
252b5132 RH |
224 | command. */ |
225 | ||
226 | void | |
227 | md_begin () | |
228 | { | |
229 | /* The endianness can be chosen "at the factory". */ | |
230 | target_big_endian = byte_order == BIG_ENDIAN; | |
231 | ||
232 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_arc, arc_mach_type)) | |
0d2bcfaf | 233 | as_warn ("could not set architecture and machine"); |
252b5132 | 234 | |
bcee8eb8 AM |
235 | /* This call is necessary because we need to initialize `arc_operand_map' |
236 | which may be needed before we see the first insn. */ | |
0d2bcfaf | 237 | arc_opcode_init_tables (arc_get_opcode_mach (arc_mach_type, |
252b5132 RH |
238 | target_big_endian)); |
239 | } | |
240 | ||
241 | /* Initialize the various opcode and operand tables. | |
242 | MACH is one of bfd_mach_arc_xxx. */ | |
252b5132 RH |
243 | static void |
244 | init_opcode_tables (mach) | |
245 | int mach; | |
246 | { | |
4a314ec8 | 247 | int i; |
252b5132 RH |
248 | char *last; |
249 | ||
250 | if ((arc_suffix_hash = hash_new ()) == NULL) | |
0d2bcfaf | 251 | as_fatal ("virtual memory exhausted"); |
252b5132 RH |
252 | |
253 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_arc, mach)) | |
0d2bcfaf | 254 | as_warn ("could not set architecture and machine"); |
252b5132 RH |
255 | |
256 | /* This initializes a few things in arc-opc.c that we need. | |
257 | This must be called before the various arc_xxx_supported fns. */ | |
258 | arc_opcode_init_tables (arc_get_opcode_mach (mach, target_big_endian)); | |
259 | ||
260 | /* Only put the first entry of each equivalently named suffix in the | |
261 | table. */ | |
262 | last = ""; | |
263 | for (i = 0; i < arc_suffixes_count; i++) | |
264 | { | |
252b5132 RH |
265 | if (strcmp (arc_suffixes[i].name, last) != 0) |
266 | hash_insert (arc_suffix_hash, arc_suffixes[i].name, (PTR) (arc_suffixes + i)); | |
267 | last = arc_suffixes[i].name; | |
268 | } | |
269 | ||
270 | /* Since registers don't have a prefix, we put them in the symbol table so | |
271 | they can't be used as symbols. This also simplifies argument parsing as | |
272 | we can let gas parse registers for us. The recorded register number is | |
0d2bcfaf NC |
273 | the address of the register's entry in arc_reg_names. |
274 | ||
275 | If the register name is already in the table, then the existing | |
276 | definition is assumed to be from an .ExtCoreRegister pseudo-op. */ | |
277 | ||
252b5132 RH |
278 | for (i = 0; i < arc_reg_names_count; i++) |
279 | { | |
19203624 | 280 | if (symbol_find (arc_reg_names[i].name)) |
252b5132 RH |
281 | continue; |
282 | /* Use symbol_create here instead of symbol_new so we don't try to | |
283 | output registers into the object file's symbol table. */ | |
bcee8eb8 AM |
284 | symbol_table_insert (symbol_create (arc_reg_names[i].name, |
285 | reg_section, | |
286 | (int) &arc_reg_names[i], | |
287 | &zero_address_frag)); | |
252b5132 RH |
288 | } |
289 | ||
0d2bcfaf | 290 | /* Tell `.option' it's too late. */ |
252b5132 RH |
291 | cpu_tables_init_p = 1; |
292 | } | |
293 | \f | |
294 | /* Insert an operand value into an instruction. | |
295 | If REG is non-NULL, it is a register number and ignore VAL. */ | |
296 | ||
297 | static arc_insn | |
298 | arc_insert_operand (insn, operand, mods, reg, val, file, line) | |
299 | arc_insn insn; | |
300 | const struct arc_operand *operand; | |
301 | int mods; | |
302 | const struct arc_operand_value *reg; | |
303 | offsetT val; | |
304 | char *file; | |
305 | unsigned int line; | |
306 | { | |
307 | if (operand->bits != 32) | |
308 | { | |
309 | long min, max; | |
310 | offsetT test; | |
311 | ||
312 | if ((operand->flags & ARC_OPERAND_SIGNED) != 0) | |
313 | { | |
314 | if ((operand->flags & ARC_OPERAND_SIGNOPT) != 0) | |
315 | max = (1 << operand->bits) - 1; | |
316 | else | |
317 | max = (1 << (operand->bits - 1)) - 1; | |
318 | min = - (1 << (operand->bits - 1)); | |
319 | } | |
320 | else | |
321 | { | |
322 | max = (1 << operand->bits) - 1; | |
323 | min = 0; | |
324 | } | |
325 | ||
326 | if ((operand->flags & ARC_OPERAND_NEGATIVE) != 0) | |
327 | test = - val; | |
328 | else | |
329 | test = val; | |
330 | ||
331 | if (test < (offsetT) min || test > (offsetT) max) | |
332 | { | |
333 | const char *err = | |
0d2bcfaf | 334 | "operand out of range (%s not between %ld and %ld)"; |
252b5132 RH |
335 | char buf[100]; |
336 | ||
337 | sprint_value (buf, test); | |
338 | if (file == (char *) NULL) | |
339 | as_warn (err, buf, min, max); | |
340 | else | |
341 | as_warn_where (file, line, err, buf, min, max); | |
342 | } | |
343 | } | |
344 | ||
345 | if (operand->insert) | |
346 | { | |
347 | const char *errmsg; | |
348 | ||
349 | errmsg = NULL; | |
350 | insn = (*operand->insert) (insn, operand, mods, reg, (long) val, &errmsg); | |
351 | if (errmsg != (const char *) NULL) | |
352 | as_warn (errmsg); | |
353 | } | |
354 | else | |
355 | insn |= (((long) val & ((1 << operand->bits) - 1)) | |
356 | << operand->shift); | |
357 | ||
358 | return insn; | |
359 | } | |
360 | ||
361 | /* We need to keep a list of fixups. We can't simply generate them as | |
362 | we go, because that would require us to first create the frag, and | |
363 | that would screw up references to ``.''. */ | |
364 | ||
19203624 | 365 | struct arc_fixup { |
bcee8eb8 | 366 | /* index into `arc_operands' */ |
252b5132 RH |
367 | int opindex; |
368 | expressionS exp; | |
369 | }; | |
370 | ||
371 | #define MAX_FIXUPS 5 | |
372 | ||
373 | #define MAX_SUFFIXES 5 | |
374 | ||
375 | /* This routine is called for each instruction to be assembled. */ | |
376 | ||
377 | void | |
378 | md_assemble (str) | |
379 | char *str; | |
380 | { | |
381 | const struct arc_opcode *opcode; | |
0d2bcfaf NC |
382 | const struct arc_opcode *std_opcode; |
383 | struct arc_opcode *ext_opcode; | |
252b5132 | 384 | char *start; |
0d2bcfaf | 385 | const char *last_errmsg = 0; |
252b5132 RH |
386 | arc_insn insn; |
387 | static int init_tables_p = 0; | |
388 | ||
389 | /* Opcode table initialization is deferred until here because we have to | |
bcee8eb8 | 390 | wait for a possible .option command. */ |
252b5132 RH |
391 | if (!init_tables_p) |
392 | { | |
393 | init_opcode_tables (arc_mach_type); | |
394 | init_tables_p = 1; | |
395 | } | |
396 | ||
397 | /* Skip leading white space. */ | |
3882b010 | 398 | while (ISSPACE (*str)) |
252b5132 RH |
399 | str++; |
400 | ||
401 | /* The instructions are stored in lists hashed by the first letter (though | |
402 | we needn't care how they're hashed). Get the first in the list. */ | |
403 | ||
0d2bcfaf NC |
404 | ext_opcode = arc_ext_opcodes; |
405 | std_opcode = arc_opcode_lookup_asm (str); | |
252b5132 RH |
406 | |
407 | /* Keep looking until we find a match. */ | |
408 | ||
409 | start = str; | |
19203624 | 410 | for (opcode = (ext_opcode ? ext_opcode : std_opcode); |
0d2bcfaf NC |
411 | opcode != NULL; |
412 | opcode = (ARC_OPCODE_NEXT_ASM (opcode) | |
1e07b820 KH |
413 | ? ARC_OPCODE_NEXT_ASM (opcode) |
414 | : (ext_opcode ? ext_opcode = NULL, std_opcode : NULL))) | |
252b5132 RH |
415 | { |
416 | int past_opcode_p, fc, num_suffixes; | |
0d2bcfaf | 417 | int fix_up_at = 0; |
252b5132 RH |
418 | char *syn; |
419 | struct arc_fixup fixups[MAX_FIXUPS]; | |
420 | /* Used as a sanity check. If we need a limm reloc, make sure we ask | |
421 | for an extra 4 bytes from frag_more. */ | |
422 | int limm_reloc_p; | |
0d2bcfaf | 423 | int ext_suffix_p; |
252b5132 RH |
424 | const struct arc_operand_value *insn_suffixes[MAX_SUFFIXES]; |
425 | ||
426 | /* Is this opcode supported by the selected cpu? */ | |
427 | if (! arc_opcode_supported (opcode)) | |
428 | continue; | |
429 | ||
430 | /* Scan the syntax string. If it doesn't match, try the next one. */ | |
431 | ||
432 | arc_opcode_init_insert (); | |
433 | insn = opcode->value; | |
434 | fc = 0; | |
435 | past_opcode_p = 0; | |
436 | num_suffixes = 0; | |
437 | limm_reloc_p = 0; | |
0d2bcfaf | 438 | ext_suffix_p = 0; |
252b5132 RH |
439 | |
440 | /* We don't check for (*str != '\0') here because we want to parse | |
441 | any trailing fake arguments in the syntax string. */ | |
19203624 | 442 | for (str = start, syn = opcode->syntax; *syn != '\0';) |
252b5132 RH |
443 | { |
444 | int mods; | |
445 | const struct arc_operand *operand; | |
446 | ||
447 | /* Non operand chars must match exactly. */ | |
448 | if (*syn != '%' || *++syn == '%') | |
449 | { | |
450 | /* Handle '+' specially as we want to allow "ld r0,[sp-4]". */ | |
451 | /* ??? The syntax has changed to [sp,-4]. */ | |
452 | if (0 && *syn == '+' && *str == '-') | |
453 | { | |
454 | /* Skip over syn's +, but leave str's - alone. | |
455 | That makes the case identical to "ld r0,[sp+-4]". */ | |
456 | ++syn; | |
457 | } | |
458 | else if (*str == *syn) | |
459 | { | |
460 | if (*syn == ' ') | |
461 | past_opcode_p = 1; | |
462 | ++syn; | |
463 | ++str; | |
464 | } | |
465 | else | |
466 | break; | |
467 | continue; | |
468 | } | |
469 | ||
470 | /* We have an operand. Pick out any modifiers. */ | |
471 | mods = 0; | |
4a314ec8 | 472 | while (ARC_MOD_P (arc_operands[arc_operand_map[(int) *syn]].flags)) |
252b5132 | 473 | { |
4a314ec8 | 474 | mods |= arc_operands[arc_operand_map[(int) *syn]].flags & ARC_MOD_BITS; |
252b5132 RH |
475 | ++syn; |
476 | } | |
4a314ec8 | 477 | operand = arc_operands + arc_operand_map[(int) *syn]; |
252b5132 | 478 | if (operand->fmt == 0) |
0d2bcfaf | 479 | as_fatal ("unknown syntax format character `%c'", *syn); |
252b5132 RH |
480 | |
481 | if (operand->flags & ARC_OPERAND_FAKE) | |
482 | { | |
483 | const char *errmsg = NULL; | |
484 | if (operand->insert) | |
485 | { | |
486 | insn = (*operand->insert) (insn, operand, mods, NULL, 0, &errmsg); | |
1e07b820 KH |
487 | if (errmsg != (const char *) NULL) |
488 | { | |
489 | last_errmsg = errmsg; | |
490 | if (operand->flags & ARC_OPERAND_ERROR) | |
491 | { | |
492 | as_bad (errmsg); | |
493 | return; | |
494 | } | |
495 | else if (operand->flags & ARC_OPERAND_WARN) | |
496 | as_warn (errmsg); | |
497 | break; | |
498 | } | |
19203624 KH |
499 | if (limm_reloc_p |
500 | && (operand->flags && operand->flags & ARC_OPERAND_LIMM) | |
501 | && (operand->flags & | |
502 | (ARC_OPERAND_ABSOLUTE_BRANCH | ARC_OPERAND_ADDRESS))) | |
1e07b820 KH |
503 | { |
504 | fixups[fix_up_at].opindex = arc_operand_map[operand->fmt]; | |
505 | } | |
252b5132 RH |
506 | } |
507 | ++syn; | |
508 | } | |
509 | /* Are we finished with suffixes? */ | |
510 | else if (!past_opcode_p) | |
511 | { | |
512 | int found; | |
513 | char c; | |
19203624 KH |
514 | char *s, *t; |
515 | const struct arc_operand_value *suf, *suffix_end; | |
0d2bcfaf | 516 | const struct arc_operand_value *suffix = NULL; |
252b5132 RH |
517 | |
518 | if (!(operand->flags & ARC_OPERAND_SUFFIX)) | |
519 | abort (); | |
520 | ||
521 | /* If we're at a space in the input string, we want to skip the | |
522 | remaining suffixes. There may be some fake ones though, so | |
523 | just go on to try the next one. */ | |
524 | if (*str == ' ') | |
525 | { | |
526 | ++syn; | |
527 | continue; | |
528 | } | |
529 | ||
530 | s = str; | |
531 | if (mods & ARC_MOD_DOT) | |
532 | { | |
533 | if (*s != '.') | |
534 | break; | |
535 | ++s; | |
536 | } | |
537 | else | |
538 | { | |
539 | /* This can happen in "b.nd foo" and we're currently looking | |
540 | for "%q" (ie: a condition code suffix). */ | |
541 | if (*s == '.') | |
542 | { | |
543 | ++syn; | |
544 | continue; | |
545 | } | |
546 | } | |
547 | ||
548 | /* Pick the suffix out and look it up via the hash table. */ | |
3882b010 | 549 | for (t = s; *t && ISALNUM (*t); ++t) |
252b5132 RH |
550 | continue; |
551 | c = *t; | |
552 | *t = '\0'; | |
19203624 | 553 | if ((suf = get_ext_suffix (s))) |
1e07b820 KH |
554 | ext_suffix_p = 1; |
555 | else | |
556 | suf = hash_find (arc_suffix_hash, s); | |
252b5132 RH |
557 | if (!suf) |
558 | { | |
559 | /* This can happen in "blle foo" and we're currently using | |
560 | the template "b%q%.n %j". The "bl" insn occurs later in | |
561 | the table so "lle" isn't an illegal suffix. */ | |
1e07b820 | 562 | *t = c; |
252b5132 RH |
563 | break; |
564 | } | |
565 | ||
566 | /* Is it the right type? Note that the same character is used | |
1e07b820 | 567 | several times, so we have to examine all of them. This is |
252b5132 RH |
568 | relatively efficient as equivalent entries are kept |
569 | together. If it's not the right type, don't increment `str' | |
570 | so we try the next one in the series. */ | |
571 | found = 0; | |
1e07b820 KH |
572 | if (ext_suffix_p && arc_operands[suf->type].fmt == *syn) |
573 | { | |
574 | /* Insert the suffix's value into the insn. */ | |
575 | *t = c; | |
576 | if (operand->insert) | |
577 | insn = (*operand->insert) (insn, operand, | |
578 | mods, NULL, suf->value, | |
579 | NULL); | |
580 | else | |
581 | insn |= suf->value << operand->shift; | |
582 | ||
583 | str = t; | |
584 | found = 1; | |
585 | } | |
586 | else | |
587 | { | |
588 | *t = c; | |
589 | suffix_end = arc_suffixes + arc_suffixes_count; | |
590 | for (suffix = suf; | |
591 | suffix < suffix_end && strcmp (suffix->name, suf->name) == 0; | |
592 | ++suffix) | |
593 | { | |
594 | if (arc_operands[suffix->type].fmt == *syn) | |
595 | { | |
596 | /* Insert the suffix's value into the insn. */ | |
597 | if (operand->insert) | |
598 | insn = (*operand->insert) (insn, operand, | |
599 | mods, NULL, suffix->value, | |
600 | NULL); | |
601 | else | |
602 | insn |= suffix->value << operand->shift; | |
603 | ||
604 | str = t; | |
605 | found = 1; | |
606 | break; | |
607 | } | |
608 | } | |
609 | } | |
252b5132 RH |
610 | ++syn; |
611 | if (!found) | |
19203624 KH |
612 | /* Wrong type. Just go on to try next insn entry. */ |
613 | ; | |
252b5132 RH |
614 | else |
615 | { | |
616 | if (num_suffixes == MAX_SUFFIXES) | |
0d2bcfaf | 617 | as_bad ("too many suffixes"); |
252b5132 RH |
618 | else |
619 | insn_suffixes[num_suffixes++] = suffix; | |
620 | } | |
621 | } | |
622 | else | |
623 | /* This is either a register or an expression of some kind. */ | |
624 | { | |
252b5132 RH |
625 | char *hold; |
626 | const struct arc_operand_value *reg = NULL; | |
627 | long value = 0; | |
628 | expressionS exp; | |
629 | ||
630 | if (operand->flags & ARC_OPERAND_SUFFIX) | |
631 | abort (); | |
632 | ||
633 | /* Is there anything left to parse? | |
634 | We don't check for this at the top because we want to parse | |
635 | any trailing fake arguments in the syntax string. */ | |
2d0441d9 | 636 | if (is_end_of_line[(unsigned char) *str]) |
252b5132 | 637 | break; |
252b5132 RH |
638 | |
639 | /* Parse the operand. */ | |
640 | hold = input_line_pointer; | |
641 | input_line_pointer = str; | |
642 | expression (&exp); | |
643 | str = input_line_pointer; | |
644 | input_line_pointer = hold; | |
645 | ||
646 | if (exp.X_op == O_illegal) | |
0d2bcfaf | 647 | as_bad ("illegal operand"); |
252b5132 | 648 | else if (exp.X_op == O_absent) |
0d2bcfaf | 649 | as_bad ("missing operand"); |
252b5132 RH |
650 | else if (exp.X_op == O_constant) |
651 | { | |
652 | value = exp.X_add_number; | |
653 | } | |
654 | else if (exp.X_op == O_register) | |
655 | { | |
0d2bcfaf | 656 | reg = (struct arc_operand_value *) exp.X_add_number; |
252b5132 | 657 | } |
0d2bcfaf NC |
658 | #define IS_REG_DEST_OPERAND(o) ((o) == 'a') |
659 | else if (IS_REG_DEST_OPERAND (*syn)) | |
19203624 | 660 | as_bad ("symbol as destination register"); |
1e07b820 | 661 | else |
252b5132 | 662 | { |
19203624 | 663 | if (!strncmp (str, "@h30", 4)) |
1e07b820 | 664 | { |
19203624 | 665 | arc_code_symbol (&exp); |
1e07b820 KH |
666 | str += 4; |
667 | } | |
252b5132 RH |
668 | /* We need to generate a fixup for this expression. */ |
669 | if (fc >= MAX_FIXUPS) | |
0d2bcfaf | 670 | as_fatal ("too many fixups"); |
252b5132 | 671 | fixups[fc].exp = exp; |
1e07b820 | 672 | /* We don't support shimm relocs. break here to force |
19203624 | 673 | the assembler to output a limm. */ |
0d2bcfaf | 674 | #define IS_REG_SHIMM_OFFSET(o) ((o) == 'd') |
19203624 | 675 | if (IS_REG_SHIMM_OFFSET (*syn)) |
1e07b820 | 676 | break; |
252b5132 RH |
677 | /* If this is a register constant (IE: one whose |
678 | register value gets stored as 61-63) then this | |
bfb32b52 | 679 | must be a limm. */ |
252b5132 RH |
680 | /* ??? This bit could use some cleaning up. |
681 | Referencing the format chars like this goes | |
682 | against style. */ | |
0d2bcfaf | 683 | if (IS_SYMBOL_OPERAND (*syn)) |
252b5132 RH |
684 | { |
685 | const char *junk; | |
252b5132 | 686 | limm_reloc_p = 1; |
19203624 | 687 | /* Save this, we don't yet know what reloc to use. */ |
1e07b820 | 688 | fix_up_at = fc; |
252b5132 RH |
689 | /* Tell insert_reg we need a limm. This is |
690 | needed because the value at this point is | |
691 | zero, a shimm. */ | |
692 | /* ??? We need a cleaner interface than this. */ | |
693 | (*arc_operands[arc_operand_map['Q']].insert) | |
694 | (insn, operand, mods, reg, 0L, &junk); | |
695 | } | |
696 | else | |
4a314ec8 | 697 | fixups[fc].opindex = arc_operand_map[(int) *syn]; |
252b5132 RH |
698 | ++fc; |
699 | value = 0; | |
700 | } | |
701 | ||
702 | /* Insert the register or expression into the instruction. */ | |
703 | if (operand->insert) | |
704 | { | |
705 | const char *errmsg = NULL; | |
706 | insn = (*operand->insert) (insn, operand, mods, | |
707 | reg, (long) value, &errmsg); | |
1e07b820 KH |
708 | if (errmsg != (const char *) NULL) |
709 | { | |
710 | last_errmsg = errmsg; | |
711 | if (operand->flags & ARC_OPERAND_ERROR) | |
712 | { | |
713 | as_bad (errmsg); | |
714 | return; | |
715 | } | |
716 | else if (operand->flags & ARC_OPERAND_WARN) | |
717 | as_warn (errmsg); | |
718 | break; | |
719 | } | |
252b5132 RH |
720 | } |
721 | else | |
722 | insn |= (value & ((1 << operand->bits) - 1)) << operand->shift; | |
723 | ||
724 | ++syn; | |
725 | } | |
726 | } | |
727 | ||
728 | /* If we're at the end of the syntax string, we're done. */ | |
729 | /* FIXME: try to move this to a separate function. */ | |
730 | if (*syn == '\0') | |
731 | { | |
732 | int i; | |
733 | char *f; | |
734 | long limm, limm_p; | |
735 | ||
736 | /* For the moment we assume a valid `str' can only contain blanks | |
737 | now. IE: We needn't try again with a longer version of the | |
738 | insn and it is assumed that longer versions of insns appear | |
739 | before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ | |
740 | ||
3882b010 | 741 | while (ISSPACE (*str)) |
252b5132 RH |
742 | ++str; |
743 | ||
2d0441d9 | 744 | if (!is_end_of_line[(unsigned char) *str]) |
0d2bcfaf | 745 | as_bad ("junk at end of line: `%s'", str); |
252b5132 RH |
746 | |
747 | /* Is there a limm value? */ | |
748 | limm_p = arc_opcode_limm_p (&limm); | |
749 | ||
750 | /* Perform various error and warning tests. */ | |
751 | ||
752 | { | |
753 | static int in_delay_slot_p = 0; | |
754 | static int prev_insn_needs_cc_nop_p = 0; | |
755 | /* delay slot type seen */ | |
756 | int delay_slot_type = ARC_DELAY_NONE; | |
757 | /* conditional execution flag seen */ | |
758 | int conditional = 0; | |
759 | /* 1 if condition codes are being set */ | |
760 | int cc_set_p = 0; | |
761 | /* 1 if conditional branch, including `b' "branch always" */ | |
762 | int cond_branch_p = opcode->flags & ARC_OPCODE_COND_BRANCH; | |
252b5132 RH |
763 | |
764 | for (i = 0; i < num_suffixes; ++i) | |
765 | { | |
766 | switch (arc_operands[insn_suffixes[i]->type].fmt) | |
767 | { | |
19203624 | 768 | case 'n': |
252b5132 RH |
769 | delay_slot_type = insn_suffixes[i]->value; |
770 | break; | |
19203624 | 771 | case 'q': |
252b5132 RH |
772 | conditional = insn_suffixes[i]->value; |
773 | break; | |
19203624 | 774 | case 'f': |
252b5132 RH |
775 | cc_set_p = 1; |
776 | break; | |
777 | } | |
778 | } | |
779 | ||
780 | /* Putting an insn with a limm value in a delay slot is supposed to | |
781 | be legal, but let's warn the user anyway. Ditto for 8 byte | |
782 | jumps with delay slots. */ | |
783 | if (in_delay_slot_p && limm_p) | |
1e07b820 | 784 | as_warn ("8 byte instruction in delay slot"); |
0d2bcfaf | 785 | if (delay_slot_type != ARC_DELAY_NONE |
19203624 | 786 | && limm_p && arc_insn_not_jl (insn)) /* except for jl addr */ |
1e07b820 | 787 | as_warn ("8 byte jump instruction with delay slot"); |
252b5132 RH |
788 | in_delay_slot_p = (delay_slot_type != ARC_DELAY_NONE) && !limm_p; |
789 | ||
790 | /* Warn when a conditional branch immediately follows a set of | |
791 | the condition codes. Note that this needn't be done if the | |
792 | insn that sets the condition codes uses a limm. */ | |
793 | if (cond_branch_p && conditional != 0 /* 0 = "always" */ | |
0d2bcfaf | 794 | && prev_insn_needs_cc_nop_p && arc_mach_type == bfd_mach_arc_5) |
1e07b820 | 795 | as_warn ("conditional branch follows set of flags"); |
0d2bcfaf | 796 | prev_insn_needs_cc_nop_p = |
1e07b820 KH |
797 | /* FIXME: ??? not required: |
798 | (delay_slot_type != ARC_DELAY_NONE) && */ | |
799 | cc_set_p && !limm_p; | |
252b5132 RH |
800 | } |
801 | ||
802 | /* Write out the instruction. | |
803 | It is important to fetch enough space in one call to `frag_more'. | |
804 | We use (f - frag_now->fr_literal) to compute where we are and we | |
805 | don't want frag_now to change between calls. */ | |
806 | if (limm_p) | |
807 | { | |
808 | f = frag_more (8); | |
809 | md_number_to_chars (f, insn, 4); | |
810 | md_number_to_chars (f + 4, limm, 4); | |
9fcc94b6 | 811 | dwarf2_emit_insn (8); |
252b5132 RH |
812 | } |
813 | else if (limm_reloc_p) | |
814 | { | |
815 | /* We need a limm reloc, but the tables think we don't. */ | |
816 | abort (); | |
817 | } | |
818 | else | |
819 | { | |
820 | f = frag_more (4); | |
821 | md_number_to_chars (f, insn, 4); | |
9fcc94b6 | 822 | dwarf2_emit_insn (4); |
252b5132 RH |
823 | } |
824 | ||
825 | /* Create any fixups. */ | |
826 | for (i = 0; i < fc; ++i) | |
827 | { | |
828 | int op_type, reloc_type; | |
829 | expressionS exptmp; | |
830 | const struct arc_operand *operand; | |
831 | ||
832 | /* Create a fixup for this operand. | |
833 | At this point we do not use a bfd_reloc_code_real_type for | |
834 | operands residing in the insn, but instead just use the | |
835 | operand index. This lets us easily handle fixups for any | |
836 | operand type, although that is admittedly not a very exciting | |
94f592af | 837 | feature. We pick a BFD reloc type in md_apply_fix3. |
252b5132 RH |
838 | |
839 | Limm values (4 byte immediate "constants") must be treated | |
840 | normally because they're not part of the actual insn word | |
841 | and thus the insertion routines don't handle them. */ | |
842 | ||
843 | if (arc_operands[fixups[i].opindex].flags & ARC_OPERAND_LIMM) | |
844 | { | |
19203624 KH |
845 | /* Modify the fixup addend as required by the cpu. */ |
846 | fixups[i].exp.X_add_number += arc_limm_fixup_adjust (insn); | |
252b5132 RH |
847 | op_type = fixups[i].opindex; |
848 | /* FIXME: can we add this data to the operand table? */ | |
0d2bcfaf | 849 | if (op_type == arc_operand_map['L'] |
1e07b820 KH |
850 | || op_type == arc_operand_map['s'] |
851 | || op_type == arc_operand_map['o'] | |
852 | || op_type == arc_operand_map['O']) | |
252b5132 RH |
853 | reloc_type = BFD_RELOC_32; |
854 | else if (op_type == arc_operand_map['J']) | |
855 | reloc_type = BFD_RELOC_ARC_B26; | |
856 | else | |
857 | abort (); | |
858 | reloc_type = get_arc_exp_reloc_type (1, reloc_type, | |
859 | &fixups[i].exp, | |
860 | &exptmp); | |
861 | } | |
862 | else | |
863 | { | |
864 | op_type = get_arc_exp_reloc_type (0, fixups[i].opindex, | |
865 | &fixups[i].exp, &exptmp); | |
866 | reloc_type = op_type + (int) BFD_RELOC_UNUSED; | |
867 | } | |
868 | operand = &arc_operands[op_type]; | |
869 | fix_new_exp (frag_now, | |
870 | ((f - frag_now->fr_literal) | |
871 | + (operand->flags & ARC_OPERAND_LIMM ? 4 : 0)), 4, | |
872 | &exptmp, | |
873 | (operand->flags & ARC_OPERAND_RELATIVE_BRANCH) != 0, | |
874 | (bfd_reloc_code_real_type) reloc_type); | |
875 | } | |
876 | ||
877 | /* All done. */ | |
878 | return; | |
879 | } | |
880 | ||
881 | /* Try the next entry. */ | |
882 | } | |
883 | ||
19203624 | 884 | if (NULL == last_errmsg) |
0d2bcfaf NC |
885 | as_bad ("bad instruction `%s'", start); |
886 | else | |
887 | as_bad (last_errmsg); | |
252b5132 RH |
888 | } |
889 | \f | |
252b5132 | 890 | static void |
0d2bcfaf NC |
891 | arc_extoper (opertype) |
892 | int opertype; | |
252b5132 RH |
893 | { |
894 | char *name; | |
0d2bcfaf | 895 | char *mode; |
252b5132 RH |
896 | char c; |
897 | char *p; | |
0d2bcfaf NC |
898 | int imode = 0; |
899 | int number; | |
900 | struct arc_ext_operand_value *ext_oper; | |
252b5132 RH |
901 | symbolS *symbolP; |
902 | ||
0d2bcfaf NC |
903 | segT old_sec; |
904 | int old_subsec; | |
905 | ||
252b5132 RH |
906 | name = input_line_pointer; |
907 | c = get_symbol_end (); | |
19203624 | 908 | name = xstrdup (name); |
0d2bcfaf NC |
909 | if (NULL == name) |
910 | { | |
19203624 | 911 | ignore_rest_of_line (); |
1e07b820 | 912 | return; |
0d2bcfaf NC |
913 | } |
914 | ||
915 | p = name; | |
916 | while (*p) | |
917 | { | |
3882b010 | 918 | *p = TOLOWER (*p); |
1e07b820 | 919 | p++; |
0d2bcfaf NC |
920 | } |
921 | ||
bcee8eb8 | 922 | /* just after name is now '\0' */ |
252b5132 RH |
923 | p = input_line_pointer; |
924 | *p = c; | |
925 | SKIP_WHITESPACE (); | |
0d2bcfaf | 926 | |
252b5132 RH |
927 | if (*input_line_pointer != ',') |
928 | { | |
0d2bcfaf | 929 | as_bad ("expected comma after operand name"); |
252b5132 | 930 | ignore_rest_of_line (); |
19203624 | 931 | free (name); |
252b5132 RH |
932 | return; |
933 | } | |
0d2bcfaf | 934 | |
bcee8eb8 | 935 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf NC |
936 | number = get_absolute_expression (); |
937 | ||
19203624 | 938 | if (number < 0) |
0d2bcfaf | 939 | { |
19203624 KH |
940 | as_bad ("negative operand number %d", number); |
941 | ignore_rest_of_line (); | |
942 | free (name); | |
1e07b820 | 943 | return; |
0d2bcfaf NC |
944 | } |
945 | ||
946 | if (opertype) | |
947 | { | |
19203624 | 948 | SKIP_WHITESPACE (); |
0d2bcfaf NC |
949 | |
950 | if (*input_line_pointer != ',') | |
1e07b820 KH |
951 | { |
952 | as_bad ("expected comma after register-number"); | |
953 | ignore_rest_of_line (); | |
19203624 | 954 | free (name); |
1e07b820 KH |
955 | return; |
956 | } | |
bfb32b52 | 957 | |
bcee8eb8 | 958 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf | 959 | mode = input_line_pointer; |
bfb32b52 | 960 | |
19203624 | 961 | if (!strncmp (mode, "r|w", 3)) |
1e07b820 KH |
962 | { |
963 | imode = 0; | |
964 | input_line_pointer += 3; | |
965 | } | |
0d2bcfaf | 966 | else |
1e07b820 | 967 | { |
19203624 | 968 | if (!strncmp (mode, "r", 1)) |
1e07b820 KH |
969 | { |
970 | imode = ARC_REGISTER_READONLY; | |
971 | input_line_pointer += 1; | |
972 | } | |
973 | else | |
974 | { | |
19203624 | 975 | if (strncmp (mode, "w", 1)) |
1e07b820 KH |
976 | { |
977 | as_bad ("invalid mode"); | |
19203624 KH |
978 | ignore_rest_of_line (); |
979 | free (name); | |
1e07b820 KH |
980 | return; |
981 | } | |
982 | else | |
983 | { | |
984 | imode = ARC_REGISTER_WRITEONLY; | |
985 | input_line_pointer += 1; | |
986 | } | |
987 | } | |
988 | } | |
19203624 | 989 | SKIP_WHITESPACE (); |
1e07b820 KH |
990 | if (1 == opertype) |
991 | { | |
992 | if (*input_line_pointer != ',') | |
993 | { | |
994 | as_bad ("expected comma after register-mode"); | |
995 | ignore_rest_of_line (); | |
19203624 | 996 | free (name); |
1e07b820 KH |
997 | return; |
998 | } | |
999 | ||
bcee8eb8 | 1000 | input_line_pointer++; /* skip ',' */ |
1e07b820 | 1001 | |
19203624 | 1002 | if (!strncmp (input_line_pointer, "cannot_shortcut", 15)) |
1e07b820 | 1003 | { |
19203624 | 1004 | imode |= arc_get_noshortcut_flag (); |
1e07b820 KH |
1005 | input_line_pointer += 15; |
1006 | } | |
1007 | else | |
1008 | { | |
19203624 | 1009 | if (strncmp (input_line_pointer, "can_shortcut", 12)) |
1e07b820 KH |
1010 | { |
1011 | as_bad ("shortcut designator invalid"); | |
19203624 KH |
1012 | ignore_rest_of_line (); |
1013 | free (name); | |
1e07b820 KH |
1014 | return; |
1015 | } | |
1016 | else | |
1017 | { | |
1018 | input_line_pointer += 12; | |
1019 | } | |
1020 | } | |
1021 | } | |
1022 | } | |
0d2bcfaf NC |
1023 | |
1024 | if ((opertype == 1) && number > 60) | |
1e07b820 | 1025 | { |
19203624 KH |
1026 | as_bad ("core register value (%d) too large", number); |
1027 | ignore_rest_of_line (); | |
1028 | free (name); | |
1e07b820 KH |
1029 | return; |
1030 | } | |
0d2bcfaf NC |
1031 | |
1032 | if ((opertype == 0) && number > 31) | |
1e07b820 | 1033 | { |
19203624 KH |
1034 | as_bad ("condition code value (%d) too large", number); |
1035 | ignore_rest_of_line (); | |
1036 | free (name); | |
1e07b820 KH |
1037 | return; |
1038 | } | |
0d2bcfaf NC |
1039 | |
1040 | ext_oper = (struct arc_ext_operand_value *) \ | |
19203624 | 1041 | xmalloc (sizeof (struct arc_ext_operand_value)); |
0d2bcfaf | 1042 | |
19203624 | 1043 | if (opertype) |
0d2bcfaf | 1044 | { |
19203624 | 1045 | /* If the symbol already exists, point it at the new definition. */ |
0d2bcfaf | 1046 | if ((symbolP = symbol_find (name))) |
1e07b820 | 1047 | { |
19203624 KH |
1048 | if (S_GET_SEGMENT (symbolP) == reg_section) |
1049 | S_SET_VALUE (symbolP, (int) &ext_oper->operand); | |
1e07b820 KH |
1050 | else |
1051 | { | |
19203624 KH |
1052 | as_bad ("attempt to override symbol: %s", name); |
1053 | ignore_rest_of_line (); | |
1054 | free (name); | |
1055 | free (ext_oper); | |
1e07b820 KH |
1056 | return; |
1057 | } | |
1058 | } | |
0d2bcfaf | 1059 | else |
1e07b820 | 1060 | { |
19203624 | 1061 | /* If its not there, add it. */ |
1e07b820 KH |
1062 | symbol_table_insert (symbol_create (name, reg_section, |
1063 | (int) &ext_oper->operand, &zero_address_frag)); | |
1064 | } | |
0d2bcfaf NC |
1065 | } |
1066 | ||
1067 | ext_oper->operand.name = name; | |
1068 | ext_oper->operand.value = number; | |
19203624 | 1069 | ext_oper->operand.type = arc_operand_type (opertype); |
0d2bcfaf NC |
1070 | ext_oper->operand.flags = imode; |
1071 | ||
1072 | ext_oper->next = arc_ext_operands; | |
1073 | arc_ext_operands = ext_oper; | |
1074 | ||
19203624 KH |
1075 | /* OK, now that we know what this operand is, put a description in |
1076 | the arc extension section of the output file. */ | |
0d2bcfaf NC |
1077 | |
1078 | old_sec = now_seg; | |
1079 | old_subsec = now_subseg; | |
1080 | ||
19203624 | 1081 | arc_set_ext_seg (); |
0d2bcfaf NC |
1082 | |
1083 | switch (opertype) | |
1e07b820 KH |
1084 | { |
1085 | case 0: | |
19203624 KH |
1086 | p = frag_more (1); |
1087 | *p = 3 + strlen (name) + 1; | |
1088 | p = frag_more (1); | |
1e07b820 | 1089 | *p = EXT_COND_CODE; |
19203624 | 1090 | p = frag_more (1); |
1e07b820 | 1091 | *p = number; |
19203624 KH |
1092 | p = frag_more (strlen (name) + 1); |
1093 | strcpy (p, name); | |
1e07b820 KH |
1094 | break; |
1095 | case 1: | |
19203624 KH |
1096 | p = frag_more (1); |
1097 | *p = 3 + strlen (name) + 1; | |
1098 | p = frag_more (1); | |
1e07b820 | 1099 | *p = EXT_CORE_REGISTER; |
19203624 | 1100 | p = frag_more (1); |
1e07b820 | 1101 | *p = number; |
19203624 KH |
1102 | p = frag_more (strlen (name) + 1); |
1103 | strcpy (p, name); | |
1e07b820 KH |
1104 | break; |
1105 | case 2: | |
19203624 KH |
1106 | p = frag_more (1); |
1107 | *p = 6 + strlen (name) + 1; | |
1108 | p = frag_more (1); | |
1e07b820 | 1109 | *p = EXT_AUX_REGISTER; |
19203624 | 1110 | p = frag_more (1); |
1e07b820 | 1111 | *p = number >> 24 & 0xff; |
19203624 | 1112 | p = frag_more (1); |
1e07b820 | 1113 | *p = number >> 16 & 0xff; |
19203624 | 1114 | p = frag_more (1); |
1e07b820 | 1115 | *p = number >> 8 & 0xff; |
19203624 | 1116 | p = frag_more (1); |
1e07b820 | 1117 | *p = number & 0xff; |
19203624 KH |
1118 | p = frag_more (strlen (name) + 1); |
1119 | strcpy (p, name); | |
1e07b820 KH |
1120 | break; |
1121 | default: | |
19203624 KH |
1122 | as_bad ("invalid opertype"); |
1123 | ignore_rest_of_line (); | |
1124 | free (name); | |
1e07b820 KH |
1125 | return; |
1126 | break; | |
1127 | } | |
0d2bcfaf NC |
1128 | |
1129 | subseg_set (old_sec, old_subsec); | |
1130 | ||
19203624 | 1131 | /* Enter all registers into the symbol table. */ |
0d2bcfaf | 1132 | |
19203624 | 1133 | demand_empty_rest_of_line (); |
0d2bcfaf NC |
1134 | } |
1135 | ||
1136 | static void | |
1137 | arc_extinst (ignore) | |
19203624 | 1138 | int ignore ATTRIBUTE_UNUSED; |
0d2bcfaf NC |
1139 | { |
1140 | unsigned char syntax[129]; | |
1141 | char *name; | |
1142 | char *p; | |
1143 | char c; | |
1144 | int suffixcode = -1; | |
19203624 | 1145 | int opcode, subopcode; |
0d2bcfaf NC |
1146 | int i; |
1147 | int class = 0; | |
1148 | int name_len; | |
1149 | struct arc_opcode *ext_op; | |
1150 | ||
1151 | segT old_sec; | |
1152 | int old_subsec; | |
1153 | ||
1154 | name = input_line_pointer; | |
1155 | c = get_symbol_end (); | |
19203624 | 1156 | name = xstrdup (name); |
0d2bcfaf NC |
1157 | if (NULL == name) |
1158 | { | |
19203624 | 1159 | ignore_rest_of_line (); |
1e07b820 | 1160 | return; |
0d2bcfaf | 1161 | } |
19203624 KH |
1162 | strcpy (syntax, name); |
1163 | name_len = strlen (name); | |
0d2bcfaf | 1164 | |
bcee8eb8 | 1165 | /* just after name is now '\0' */ |
0d2bcfaf NC |
1166 | p = input_line_pointer; |
1167 | *p = c; | |
1168 | ||
1169 | SKIP_WHITESPACE (); | |
1170 | ||
1171 | if (*input_line_pointer != ',') | |
252b5132 | 1172 | { |
0d2bcfaf | 1173 | as_bad ("expected comma after operand name"); |
252b5132 RH |
1174 | ignore_rest_of_line (); |
1175 | return; | |
1176 | } | |
0d2bcfaf | 1177 | |
bcee8eb8 | 1178 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf NC |
1179 | opcode = get_absolute_expression (); |
1180 | ||
1181 | SKIP_WHITESPACE (); | |
1182 | ||
1183 | if (*input_line_pointer != ',') | |
252b5132 | 1184 | { |
0d2bcfaf | 1185 | as_bad ("expected comma after opcode"); |
252b5132 RH |
1186 | ignore_rest_of_line (); |
1187 | return; | |
1188 | } | |
0d2bcfaf | 1189 | |
bcee8eb8 | 1190 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf NC |
1191 | subopcode = get_absolute_expression (); |
1192 | ||
19203624 | 1193 | if (subopcode < 0) |
252b5132 | 1194 | { |
19203624 KH |
1195 | as_bad ("negative subopcode %d", subopcode); |
1196 | ignore_rest_of_line (); | |
1e07b820 | 1197 | return; |
252b5132 | 1198 | } |
0d2bcfaf | 1199 | |
19203624 | 1200 | if (subopcode) |
0d2bcfaf | 1201 | { |
19203624 | 1202 | if (3 != opcode) |
1e07b820 KH |
1203 | { |
1204 | as_bad ("subcode value found when opcode not equal 0x03"); | |
19203624 | 1205 | ignore_rest_of_line (); |
1e07b820 KH |
1206 | return; |
1207 | } | |
1208 | else | |
1209 | { | |
1210 | if (subopcode < 0x09 || subopcode == 0x3f) | |
1211 | { | |
1212 | as_bad ("invalid subopcode %d", subopcode); | |
19203624 | 1213 | ignore_rest_of_line (); |
1e07b820 KH |
1214 | return; |
1215 | } | |
1216 | } | |
0d2bcfaf NC |
1217 | } |
1218 | ||
1219 | SKIP_WHITESPACE (); | |
1220 | ||
252b5132 RH |
1221 | if (*input_line_pointer != ',') |
1222 | { | |
0d2bcfaf | 1223 | as_bad ("expected comma after subopcode"); |
252b5132 RH |
1224 | ignore_rest_of_line (); |
1225 | return; | |
1226 | } | |
0d2bcfaf | 1227 | |
bcee8eb8 | 1228 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf | 1229 | |
19203624 | 1230 | for (i = 0; i < (int) MAXSUFFIXCLASS; i++) |
0d2bcfaf | 1231 | { |
19203624 | 1232 | if (!strncmp (suffixclass[i].name,input_line_pointer, suffixclass[i].len)) |
1e07b820 KH |
1233 | { |
1234 | suffixcode = i; | |
1235 | input_line_pointer += suffixclass[i].len; | |
1236 | break; | |
1237 | } | |
0d2bcfaf NC |
1238 | } |
1239 | ||
19203624 | 1240 | if (-1 == suffixcode) |
0d2bcfaf NC |
1241 | { |
1242 | as_bad ("invalid suffix class"); | |
1243 | ignore_rest_of_line (); | |
1244 | return; | |
1245 | } | |
1246 | ||
252b5132 | 1247 | SKIP_WHITESPACE (); |
0d2bcfaf NC |
1248 | |
1249 | if (*input_line_pointer != ',') | |
252b5132 | 1250 | { |
0d2bcfaf NC |
1251 | as_bad ("expected comma after suffix class"); |
1252 | ignore_rest_of_line (); | |
1253 | return; | |
252b5132 | 1254 | } |
0d2bcfaf | 1255 | |
bcee8eb8 | 1256 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf | 1257 | |
19203624 | 1258 | for (i = 0; i < (int) MAXSYNTAXCLASS; i++) |
252b5132 | 1259 | { |
19203624 | 1260 | if (!strncmp (syntaxclass[i].name,input_line_pointer, syntaxclass[i].len)) |
1e07b820 KH |
1261 | { |
1262 | class = syntaxclass[i].class; | |
1263 | input_line_pointer += syntaxclass[i].len; | |
1264 | break; | |
1265 | } | |
252b5132 | 1266 | } |
252b5132 | 1267 | |
19203624 | 1268 | if (0 == (SYNTAX_VALID & class)) |
0d2bcfaf NC |
1269 | { |
1270 | as_bad ("invalid syntax class"); | |
1271 | ignore_rest_of_line (); | |
1272 | return; | |
1273 | } | |
1274 | ||
19203624 | 1275 | if ((0x3 == opcode) & (class & SYNTAX_3OP)) |
0d2bcfaf NC |
1276 | { |
1277 | as_bad ("opcode 0x3 and SYNTAX_3OP invalid"); | |
1278 | ignore_rest_of_line (); | |
1279 | return; | |
1280 | } | |
1281 | ||
1282 | switch (suffixcode) | |
1e07b820 KH |
1283 | { |
1284 | case 0: | |
19203624 | 1285 | strcat (syntax, "%.q%.f "); |
1e07b820 KH |
1286 | break; |
1287 | case 1: | |
19203624 | 1288 | strcat (syntax, "%.f "); |
1e07b820 KH |
1289 | break; |
1290 | case 2: | |
19203624 | 1291 | strcat (syntax, "%.q "); |
1e07b820 KH |
1292 | break; |
1293 | case 3: | |
19203624 | 1294 | strcat (syntax, " "); |
1e07b820 KH |
1295 | break; |
1296 | default: | |
19203624 KH |
1297 | as_bad ("unknown suffix class"); |
1298 | ignore_rest_of_line (); | |
1e07b820 KH |
1299 | return; |
1300 | break; | |
1301 | }; | |
0d2bcfaf | 1302 | |
19203624 KH |
1303 | strcat (syntax, ((opcode == 0x3) ? "%a,%b" : ((class & SYNTAX_3OP) ? "%a,%b,%c" : "%b,%c"))); |
1304 | if (suffixcode < 2) | |
1305 | strcat (syntax, "%F"); | |
1306 | strcat (syntax, "%S%L"); | |
0d2bcfaf | 1307 | |
19203624 KH |
1308 | ext_op = (struct arc_opcode *) xmalloc (sizeof (struct arc_opcode)); |
1309 | if (NULL == ext_op) | |
0d2bcfaf | 1310 | { |
1e07b820 KH |
1311 | ignore_rest_of_line (); |
1312 | return; | |
0d2bcfaf NC |
1313 | } |
1314 | ||
19203624 | 1315 | ext_op->syntax = xstrdup (syntax); |
0d2bcfaf NC |
1316 | if (NULL == ext_op->syntax) |
1317 | { | |
1e07b820 KH |
1318 | ignore_rest_of_line (); |
1319 | return; | |
0d2bcfaf NC |
1320 | } |
1321 | ||
19203624 KH |
1322 | ext_op->mask = I (-1) | ((0x3 == opcode) ? C (-1) : 0); |
1323 | ext_op->value = I (opcode) | ((0x3 == opcode) ? C (subopcode) : 0); | |
0d2bcfaf NC |
1324 | ext_op->flags = class; |
1325 | ext_op->next_asm = arc_ext_opcodes; | |
1326 | ext_op->next_dis = arc_ext_opcodes; | |
1327 | arc_ext_opcodes = ext_op; | |
1328 | ||
19203624 KH |
1329 | /* OK, now that we know what this inst is, put a description in the |
1330 | arc extension section of the output file. */ | |
0d2bcfaf NC |
1331 | |
1332 | old_sec = now_seg; | |
1333 | old_subsec = now_subseg; | |
1334 | ||
19203624 | 1335 | arc_set_ext_seg (); |
0d2bcfaf | 1336 | |
19203624 KH |
1337 | p = frag_more (1); |
1338 | *p = 5 + name_len + 1; | |
1339 | p = frag_more (1); | |
0d2bcfaf | 1340 | *p = EXT_INSTRUCTION; |
19203624 | 1341 | p = frag_more (1); |
0d2bcfaf | 1342 | *p = opcode; |
19203624 | 1343 | p = frag_more (1); |
0d2bcfaf | 1344 | *p = subopcode; |
19203624 | 1345 | p = frag_more (1); |
0d2bcfaf | 1346 | *p = (class & (OP1_MUST_BE_IMM | OP1_IMM_IMPLIED) ? IGNORE_FIRST_OPD : 0); |
19203624 KH |
1347 | p = frag_more (name_len); |
1348 | strncpy (p, syntax, name_len); | |
1349 | p = frag_more (1); | |
0d2bcfaf NC |
1350 | *p = '\0'; |
1351 | ||
1352 | subseg_set (old_sec, old_subsec); | |
1353 | ||
19203624 | 1354 | demand_empty_rest_of_line (); |
252b5132 RH |
1355 | } |
1356 | ||
0d2bcfaf | 1357 | int |
19203624 | 1358 | arc_set_ext_seg () |
0d2bcfaf NC |
1359 | { |
1360 | if (!arcext_section) | |
1361 | { | |
1362 | arcext_section = subseg_new (".arcextmap", 0); | |
1363 | bfd_set_section_flags (stdoutput, arcext_section, | |
19203624 | 1364 | SEC_READONLY | SEC_HAS_CONTENTS); |
0d2bcfaf NC |
1365 | } |
1366 | else | |
1367 | subseg_set (arcext_section, 0); | |
1368 | return 1; | |
1369 | } | |
252b5132 RH |
1370 | |
1371 | static void | |
0d2bcfaf NC |
1372 | arc_common (localScope) |
1373 | int localScope; | |
252b5132 | 1374 | { |
0d2bcfaf | 1375 | char *name; |
252b5132 | 1376 | char c; |
0d2bcfaf | 1377 | char *p; |
19203624 | 1378 | int align, size; |
0d2bcfaf | 1379 | symbolS *symbolP; |
252b5132 | 1380 | |
0d2bcfaf NC |
1381 | name = input_line_pointer; |
1382 | c = get_symbol_end (); | |
bcee8eb8 | 1383 | /* just after name is now '\0' */ |
0d2bcfaf NC |
1384 | p = input_line_pointer; |
1385 | *p = c; | |
1386 | SKIP_WHITESPACE (); | |
1387 | ||
1388 | if (*input_line_pointer != ',') | |
252b5132 | 1389 | { |
0d2bcfaf | 1390 | as_bad ("expected comma after symbol name"); |
252b5132 RH |
1391 | ignore_rest_of_line (); |
1392 | return; | |
1393 | } | |
1394 | ||
bcee8eb8 | 1395 | input_line_pointer++; /* skip ',' */ |
0d2bcfaf | 1396 | size = get_absolute_expression (); |
252b5132 | 1397 | |
0d2bcfaf NC |
1398 | if (size < 0) |
1399 | { | |
1400 | as_bad ("negative symbol length"); | |
1401 | ignore_rest_of_line (); | |
1402 | return; | |
1403 | } | |
252b5132 | 1404 | |
0d2bcfaf NC |
1405 | *p = 0; |
1406 | symbolP = symbol_find_or_make (name); | |
1407 | *p = c; | |
1408 | ||
1409 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
1410 | { | |
1411 | as_bad ("ignoring attempt to re-define symbol"); | |
1412 | ignore_rest_of_line (); | |
1413 | return; | |
1414 | } | |
19203624 KH |
1415 | if (((int) S_GET_VALUE (symbolP) != 0) \ |
1416 | && ((int) S_GET_VALUE (symbolP) != size)) | |
0d2bcfaf NC |
1417 | { |
1418 | as_warn ("length of symbol \"%s\" already %ld, ignoring %d", | |
1419 | S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size); | |
1420 | } | |
1421 | assert (symbolP->sy_frag == &zero_address_frag); | |
1422 | ||
0d2bcfaf NC |
1423 | /* Now parse the alignment field. This field is optional for |
1424 | local and global symbols. Default alignment is zero. */ | |
1425 | if (*input_line_pointer == ',') | |
1426 | { | |
1427 | input_line_pointer++; | |
1428 | align = get_absolute_expression (); | |
1429 | if (align < 0) | |
1430 | { | |
1431 | align = 0; | |
1432 | as_warn ("assuming symbol alignment of zero"); | |
1433 | } | |
1434 | } | |
252b5132 | 1435 | else |
0d2bcfaf NC |
1436 | align = 0; |
1437 | ||
1438 | if (localScope != 0) | |
252b5132 | 1439 | { |
0d2bcfaf NC |
1440 | segT old_sec; |
1441 | int old_subsec; | |
1442 | char *pfrag; | |
1443 | ||
1444 | old_sec = now_seg; | |
1445 | old_subsec = now_subseg; | |
1446 | record_alignment (bss_section, align); | |
bcee8eb8 | 1447 | subseg_set (bss_section, 0); /* ??? subseg_set (bss_section, 1); ??? */ |
0d2bcfaf NC |
1448 | |
1449 | if (align) | |
19203624 KH |
1450 | /* Do alignment. */ |
1451 | frag_align (align, 0, 0); | |
0d2bcfaf | 1452 | |
19203624 | 1453 | /* Detach from old frag. */ |
0d2bcfaf NC |
1454 | if (S_GET_SEGMENT (symbolP) == bss_section) |
1455 | symbolP->sy_frag->fr_symbol = NULL; | |
1456 | ||
1457 | symbolP->sy_frag = frag_now; | |
1458 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, | |
19203624 | 1459 | (offsetT) size, (char *) 0); |
0d2bcfaf NC |
1460 | *pfrag = 0; |
1461 | ||
1462 | S_SET_SIZE (symbolP, size); | |
1463 | S_SET_SEGMENT (symbolP, bss_section); | |
1464 | S_CLEAR_EXTERNAL (symbolP); | |
1465 | symbolP->local = 1; | |
1466 | subseg_set (old_sec, old_subsec); | |
1467 | } | |
1468 | else | |
1469 | { | |
1470 | S_SET_VALUE (symbolP, (valueT) size); | |
1471 | S_SET_ALIGN (symbolP, align); | |
1472 | S_SET_EXTERNAL (symbolP); | |
1473 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); | |
252b5132 | 1474 | } |
252b5132 | 1475 | |
0d2bcfaf NC |
1476 | symbolP->bsym->flags |= BSF_OBJECT; |
1477 | ||
1478 | demand_empty_rest_of_line (); | |
1479 | return; | |
252b5132 | 1480 | } |
0d2bcfaf | 1481 | \f |
0d2bcfaf | 1482 | /* Select the cpu we're assembling for. */ |
252b5132 RH |
1483 | |
1484 | static void | |
0d2bcfaf | 1485 | arc_option (ignore) |
19203624 | 1486 | int ignore ATTRIBUTE_UNUSED; |
252b5132 | 1487 | { |
0d2bcfaf | 1488 | int mach; |
252b5132 | 1489 | char c; |
0d2bcfaf | 1490 | char *cpu; |
252b5132 | 1491 | |
0d2bcfaf | 1492 | cpu = input_line_pointer; |
252b5132 | 1493 | c = get_symbol_end (); |
0d2bcfaf | 1494 | mach = arc_get_mach (cpu); |
252b5132 RH |
1495 | *input_line_pointer = c; |
1496 | ||
0d2bcfaf NC |
1497 | /* If an instruction has already been seen, it's too late. */ |
1498 | if (cpu_tables_init_p) | |
252b5132 | 1499 | { |
0d2bcfaf | 1500 | as_bad ("\".option\" directive must appear before any instructions"); |
252b5132 RH |
1501 | ignore_rest_of_line (); |
1502 | return; | |
1503 | } | |
252b5132 | 1504 | |
0d2bcfaf NC |
1505 | if (mach == -1) |
1506 | goto bad_cpu; | |
1507 | ||
1508 | if (mach_type_specified_p && mach != arc_mach_type) | |
252b5132 | 1509 | { |
0d2bcfaf | 1510 | as_bad ("\".option\" directive conflicts with initial definition"); |
252b5132 RH |
1511 | ignore_rest_of_line (); |
1512 | return; | |
1513 | } | |
0d2bcfaf NC |
1514 | else |
1515 | { | |
1516 | /* The cpu may have been selected on the command line. */ | |
1517 | if (mach != arc_mach_type) | |
1518 | as_warn ("\".option\" directive overrides command-line (default) value"); | |
1519 | arc_mach_type = mach; | |
1520 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_arc, mach)) | |
1521 | as_fatal ("could not set architecture and machine"); | |
1522 | mach_type_specified_p = 1; | |
1523 | } | |
252b5132 | 1524 | demand_empty_rest_of_line (); |
0d2bcfaf NC |
1525 | return; |
1526 | ||
1527 | bad_cpu: | |
1528 | as_bad ("invalid identifier for \".option\""); | |
1529 | ignore_rest_of_line (); | |
252b5132 | 1530 | } |
252b5132 | 1531 | \f |
19203624 KH |
1532 | /* Turn a string in input_line_pointer into a floating point constant |
1533 | of type TYPE, and store the appropriate bytes in *LITP. The number | |
1534 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
1535 | returned, or NULL on OK. */ | |
252b5132 | 1536 | |
0d2bcfaf | 1537 | /* Equal to MAX_PRECISION in atof-ieee.c */ |
252b5132 RH |
1538 | #define MAX_LITTLENUMS 6 |
1539 | ||
1540 | char * | |
1541 | md_atof (type, litP, sizeP) | |
89b57c9a | 1542 | int type; |
19203624 KH |
1543 | char *litP; |
1544 | int *sizeP; | |
252b5132 RH |
1545 | { |
1546 | int prec; | |
1547 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1548 | LITTLENUM_TYPE *wordP; | |
1549 | char *t; | |
89b57c9a | 1550 | char * atof_ieee PARAMS ((char *, int, LITTLENUM_TYPE *)); |
252b5132 RH |
1551 | |
1552 | switch (type) | |
1553 | { | |
1554 | case 'f': | |
1555 | case 'F': | |
1556 | prec = 2; | |
1557 | break; | |
1558 | ||
1559 | case 'd': | |
1560 | case 'D': | |
1561 | prec = 4; | |
1562 | break; | |
1563 | ||
1564 | default: | |
1565 | *sizeP = 0; | |
0d2bcfaf | 1566 | return "bad call to md_atof"; |
252b5132 RH |
1567 | } |
1568 | ||
1569 | t = atof_ieee (input_line_pointer, type, words); | |
1570 | if (t) | |
1571 | input_line_pointer = t; | |
1572 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1573 | for (wordP = words; prec--;) | |
1574 | { | |
1575 | md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
1576 | litP += sizeof (LITTLENUM_TYPE); | |
1577 | } | |
1578 | ||
1579 | return NULL; | |
1580 | } | |
1581 | ||
1582 | /* Write a value out to the object file, using the appropriate | |
1583 | endianness. */ | |
1584 | ||
1585 | void | |
1586 | md_number_to_chars (buf, val, n) | |
1587 | char *buf; | |
1588 | valueT val; | |
1589 | int n; | |
1590 | { | |
1591 | if (target_big_endian) | |
1592 | number_to_chars_bigendian (buf, val, n); | |
1593 | else | |
1594 | number_to_chars_littleendian (buf, val, n); | |
1595 | } | |
1596 | ||
bfb32b52 | 1597 | /* Round up a section size to the appropriate boundary. */ |
252b5132 RH |
1598 | |
1599 | valueT | |
1600 | md_section_align (segment, size) | |
1601 | segT segment; | |
1602 | valueT size; | |
1603 | { | |
1604 | int align = bfd_get_section_alignment (stdoutput, segment); | |
1605 | ||
1606 | return ((size + (1 << align) - 1) & (-1 << align)); | |
1607 | } | |
1608 | ||
1609 | /* We don't have any form of relaxing. */ | |
1610 | ||
1611 | int | |
1612 | md_estimate_size_before_relax (fragp, seg) | |
4a314ec8 NC |
1613 | fragS *fragp ATTRIBUTE_UNUSED; |
1614 | asection *seg ATTRIBUTE_UNUSED; | |
252b5132 | 1615 | { |
0d2bcfaf NC |
1616 | as_fatal (_("md_estimate_size_before_relax\n")); |
1617 | return 1; | |
252b5132 RH |
1618 | } |
1619 | ||
1620 | /* Convert a machine dependent frag. We never generate these. */ | |
1621 | ||
1622 | void | |
1623 | md_convert_frag (abfd, sec, fragp) | |
4a314ec8 NC |
1624 | bfd *abfd ATTRIBUTE_UNUSED; |
1625 | asection *sec ATTRIBUTE_UNUSED; | |
1626 | fragS *fragp ATTRIBUTE_UNUSED; | |
252b5132 | 1627 | { |
0d2bcfaf NC |
1628 | as_fatal (_("md_convert_frag\n")); |
1629 | } | |
1630 | ||
1631 | void | |
19203624 | 1632 | arc_code_symbol (expressionP) |
0d2bcfaf NC |
1633 | expressionS *expressionP; |
1634 | { | |
d3ecfc59 | 1635 | if (expressionP->X_op == O_symbol && expressionP->X_add_number == 0) |
0d2bcfaf | 1636 | { |
1e07b820 KH |
1637 | expressionS two; |
1638 | expressionP->X_op = O_right_shift; | |
bcee8eb8 | 1639 | expressionP->X_add_symbol->sy_value.X_op = O_constant; |
1e07b820 KH |
1640 | two.X_op = O_constant; |
1641 | two.X_add_symbol = two.X_op_symbol = NULL; | |
1642 | two.X_add_number = 2; | |
1643 | expressionP->X_op_symbol = make_expr_symbol (&two); | |
0d2bcfaf | 1644 | } |
bcee8eb8 | 1645 | /* Allow %st(sym1-sym2) */ |
19203624 KH |
1646 | else if (expressionP->X_op == O_subtract |
1647 | && expressionP->X_add_symbol != NULL | |
1648 | && expressionP->X_op_symbol != NULL | |
1649 | && expressionP->X_add_number == 0) | |
0d2bcfaf | 1650 | { |
1e07b820 KH |
1651 | expressionS two; |
1652 | expressionP->X_add_symbol = make_expr_symbol (expressionP); | |
1653 | expressionP->X_op = O_right_shift; | |
1654 | two.X_op = O_constant; | |
1655 | two.X_add_symbol = two.X_op_symbol = NULL; | |
1656 | two.X_add_number = 2; | |
1657 | expressionP->X_op_symbol = make_expr_symbol (&two); | |
0d2bcfaf NC |
1658 | } |
1659 | else | |
1660 | { | |
1e07b820 KH |
1661 | as_bad ("expression too complex code symbol"); |
1662 | return; | |
0d2bcfaf | 1663 | } |
252b5132 RH |
1664 | } |
1665 | ||
1666 | /* Parse an operand that is machine-specific. | |
1667 | ||
1668 | The ARC has a special %-op to adjust addresses so they're usable in | |
1669 | branches. The "st" is short for the STatus register. | |
1670 | ??? Later expand this to take a flags value too. | |
1671 | ||
1672 | ??? We can't create new expression types so we map the %-op's onto the | |
1673 | existing syntax. This means that the user could use the chosen syntax | |
bfb32b52 | 1674 | to achieve the same effect. */ |
252b5132 | 1675 | |
bfb32b52 | 1676 | void |
252b5132 RH |
1677 | md_operand (expressionP) |
1678 | expressionS *expressionP; | |
1679 | { | |
1680 | char *p = input_line_pointer; | |
1681 | ||
0d2bcfaf | 1682 | if (*p == '%') |
19203624 | 1683 | if (strncmp (p, "%st(", 4) == 0) |
0d2bcfaf | 1684 | { |
1e07b820 KH |
1685 | input_line_pointer += 4; |
1686 | expression (expressionP); | |
1687 | if (*input_line_pointer != ')') | |
1688 | { | |
1689 | as_bad ("missing ')' in %%-op"); | |
1690 | return; | |
1691 | } | |
1692 | ++input_line_pointer; | |
19203624 | 1693 | arc_code_symbol (expressionP); |
0d2bcfaf | 1694 | } |
1e07b820 | 1695 | else |
bcee8eb8 AM |
1696 | { |
1697 | /* It could be a register. */ | |
19203624 | 1698 | int i, l; |
1e07b820 KH |
1699 | struct arc_ext_operand_value *ext_oper = arc_ext_operands; |
1700 | p++; | |
0d2bcfaf | 1701 | |
1e07b820 KH |
1702 | while (ext_oper) |
1703 | { | |
19203624 | 1704 | l = strlen (ext_oper->operand.name); |
3882b010 | 1705 | if (!strncmp (p, ext_oper->operand.name, l) && !ISALNUM (*(p + l))) |
1e07b820 KH |
1706 | { |
1707 | input_line_pointer += l + 1; | |
1708 | expressionP->X_op = O_register; | |
1709 | expressionP->X_add_number = (int) &ext_oper->operand; | |
1710 | return; | |
1711 | } | |
1712 | ext_oper = ext_oper->next; | |
1713 | } | |
1714 | for (i = 0; i < arc_reg_names_count; i++) | |
1715 | { | |
19203624 | 1716 | l = strlen (arc_reg_names[i].name); |
3882b010 | 1717 | if (!strncmp (p, arc_reg_names[i].name, l) && !ISALNUM (*(p + l))) |
1e07b820 KH |
1718 | { |
1719 | input_line_pointer += l + 1; | |
1720 | expressionP->X_op = O_register; | |
19203624 | 1721 | expressionP->X_add_number = (int) &arc_reg_names[i]; |
1e07b820 KH |
1722 | break; |
1723 | } | |
1724 | } | |
0d2bcfaf | 1725 | } |
252b5132 RH |
1726 | } |
1727 | ||
1728 | /* We have no need to default values of symbols. | |
1729 | We could catch register names here, but that is handled by inserting | |
1730 | them all in the symbol table to begin with. */ | |
1731 | ||
1732 | symbolS * | |
1733 | md_undefined_symbol (name) | |
4a314ec8 | 1734 | char *name ATTRIBUTE_UNUSED; |
252b5132 RH |
1735 | { |
1736 | return 0; | |
1737 | } | |
1738 | \f | |
1739 | /* Functions concerning expressions. */ | |
1740 | ||
1741 | /* Parse a .byte, .word, etc. expression. | |
1742 | ||
1743 | Values for the status register are specified with %st(label). | |
1744 | `label' will be right shifted by 2. */ | |
1745 | ||
1746 | void | |
1747 | arc_parse_cons_expression (exp, nbytes) | |
19203624 KH |
1748 | expressionS *exp; |
1749 | unsigned int nbytes ATTRIBUTE_UNUSED; | |
252b5132 | 1750 | { |
0d2bcfaf NC |
1751 | char *p = input_line_pointer; |
1752 | int code_symbol_fix = 0; | |
1753 | ||
19203624 KH |
1754 | for (; ! is_end_of_line[(unsigned char) *p]; p++) |
1755 | if (*p == '@' && !strncmp (p, "@h30", 4)) | |
0d2bcfaf | 1756 | { |
1e07b820 | 1757 | code_symbol_fix = 1; |
19203624 | 1758 | strcpy (p, "; "); |
0d2bcfaf | 1759 | } |
1e07b820 KH |
1760 | expr (0, exp); |
1761 | if (code_symbol_fix) | |
1762 | { | |
19203624 | 1763 | arc_code_symbol (exp); |
1e07b820 KH |
1764 | input_line_pointer = p; |
1765 | } | |
252b5132 RH |
1766 | } |
1767 | ||
1768 | /* Record a fixup for a cons expression. */ | |
1769 | ||
1770 | void | |
1771 | arc_cons_fix_new (frag, where, nbytes, exp) | |
1772 | fragS *frag; | |
1773 | int where; | |
1774 | int nbytes; | |
1775 | expressionS *exp; | |
1776 | { | |
1777 | if (nbytes == 4) | |
1778 | { | |
1779 | int reloc_type; | |
1780 | expressionS exptmp; | |
1781 | ||
1782 | /* This may be a special ARC reloc (eg: %st()). */ | |
1783 | reloc_type = get_arc_exp_reloc_type (1, BFD_RELOC_32, exp, &exptmp); | |
1784 | fix_new_exp (frag, where, nbytes, &exptmp, 0, reloc_type); | |
1785 | } | |
1786 | else | |
1787 | { | |
1788 | fix_new_exp (frag, where, nbytes, exp, 0, | |
1789 | nbytes == 2 ? BFD_RELOC_16 | |
1790 | : nbytes == 8 ? BFD_RELOC_64 | |
1791 | : BFD_RELOC_32); | |
1792 | } | |
1793 | } | |
1794 | \f | |
1795 | /* Functions concerning relocs. */ | |
1796 | ||
1797 | /* The location from which a PC relative jump should be calculated, | |
1798 | given a PC relative reloc. */ | |
1799 | ||
bfb32b52 | 1800 | long |
252b5132 RH |
1801 | md_pcrel_from (fixP) |
1802 | fixS *fixP; | |
1803 | { | |
1804 | if (fixP->fx_addsy != (symbolS *) NULL | |
1805 | && ! S_IS_DEFINED (fixP->fx_addsy)) | |
1806 | { | |
1807 | /* The symbol is undefined. Let the linker figure it out. */ | |
1808 | return 0; | |
1809 | } | |
1810 | ||
1811 | /* Return the address of the delay slot. */ | |
1812 | return fixP->fx_frag->fr_address + fixP->fx_where + fixP->fx_size; | |
1813 | } | |
1814 | ||
1815 | /* Compute the reloc type of an expression. | |
1816 | The possibly modified expression is stored in EXPNEW. | |
1817 | ||
1818 | This is used to convert the expressions generated by the %-op's into | |
1819 | the appropriate operand type. It is called for both data in instructions | |
1820 | (operands) and data outside instructions (variables, debugging info, etc.). | |
1821 | ||
1822 | Currently supported %-ops: | |
1823 | ||
1824 | %st(symbol): represented as "symbol >> 2" | |
1825 | "st" is short for STatus as in the status register (pc) | |
1826 | ||
1827 | DEFAULT_TYPE is the type to use if no special processing is required. | |
1828 | ||
1829 | DATA_P is non-zero for data or limm values, zero for insn operands. | |
1830 | Remember that the opcode "insertion fns" cannot be used on data, they're | |
1831 | only for inserting operands into insns. They also can't be used for limm | |
1832 | values as the insertion routines don't handle limm values. When called for | |
1833 | insns we return fudged reloc types (real_value - BFD_RELOC_UNUSED). When | |
1834 | called for data or limm values we use real reloc types. */ | |
1835 | ||
1836 | static int | |
1837 | get_arc_exp_reloc_type (data_p, default_type, exp, expnew) | |
1838 | int data_p; | |
1839 | int default_type; | |
1840 | expressionS *exp; | |
1841 | expressionS *expnew; | |
1842 | { | |
1843 | /* If the expression is "symbol >> 2" we must change it to just "symbol", | |
1844 | as fix_new_exp can't handle it. Similarily for (symbol - symbol) >> 2. | |
1845 | That's ok though. What's really going on here is that we're using | |
1846 | ">> 2" as a special syntax for specifying BFD_RELOC_ARC_B26. */ | |
1847 | ||
1848 | if (exp->X_op == O_right_shift | |
1849 | && exp->X_op_symbol != NULL | |
0d2bcfaf NC |
1850 | && exp->X_op_symbol->sy_value.X_op == O_constant |
1851 | && exp->X_op_symbol->sy_value.X_add_number == 2 | |
252b5132 RH |
1852 | && exp->X_add_number == 0) |
1853 | { | |
1854 | if (exp->X_add_symbol != NULL | |
0d2bcfaf NC |
1855 | && (exp->X_add_symbol->sy_value.X_op == O_constant |
1856 | || exp->X_add_symbol->sy_value.X_op == O_symbol)) | |
252b5132 RH |
1857 | { |
1858 | *expnew = *exp; | |
1859 | expnew->X_op = O_symbol; | |
1860 | expnew->X_op_symbol = NULL; | |
1861 | return data_p ? BFD_RELOC_ARC_B26 : arc_operand_map['J']; | |
1862 | } | |
1863 | else if (exp->X_add_symbol != NULL | |
0d2bcfaf | 1864 | && exp->X_add_symbol->sy_value.X_op == O_subtract) |
252b5132 | 1865 | { |
0d2bcfaf | 1866 | *expnew = exp->X_add_symbol->sy_value; |
252b5132 RH |
1867 | return data_p ? BFD_RELOC_ARC_B26 : arc_operand_map['J']; |
1868 | } | |
1869 | } | |
1870 | ||
1871 | *expnew = *exp; | |
1872 | return default_type; | |
1873 | } | |
1874 | ||
1875 | /* Apply a fixup to the object code. This is called for all the | |
1876 | fixups we generated by the call to fix_new_exp, above. In the call | |
1877 | above we used a reloc code which was the largest legal reloc code | |
1878 | plus the operand index. Here we undo that to recover the operand | |
1879 | index. At this point all symbol values should be fully resolved, | |
1880 | and we attempt to completely resolve the reloc. If we can not do | |
1881 | that, we determine the correct reloc code and put it back in the fixup. */ | |
1882 | ||
94f592af NC |
1883 | void |
1884 | md_apply_fix3 (fixP, valP, seg) | |
252b5132 | 1885 | fixS *fixP; |
94f592af | 1886 | valueT * valP; |
252b5132 RH |
1887 | segT seg; |
1888 | { | |
19203624 KH |
1889 | #if 0 |
1890 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
1891 | #endif | |
94f592af | 1892 | valueT value = * valP; |
252b5132 RH |
1893 | |
1894 | /* FIXME FIXME FIXME: The value we are passed in *valueP includes | |
1895 | the symbol values. Since we are using BFD_ASSEMBLER, if we are | |
1896 | doing this relocation the code in write.c is going to call | |
1897 | bfd_perform_relocation, which is also going to use the symbol | |
1898 | value. That means that if the reloc is fully resolved we want to | |
1899 | use *valueP since bfd_perform_relocation is not being used. | |
1900 | However, if the reloc is not fully resolved we do not want to use | |
1901 | *valueP, and must use fx_offset instead. However, if the reloc | |
1902 | is PC relative, we do want to use *valueP since it includes the | |
1903 | result of md_pcrel_from. This is confusing. */ | |
1904 | ||
1905 | if (fixP->fx_addsy == (symbolS *) NULL) | |
94f592af NC |
1906 | fixP->fx_done = 1; |
1907 | ||
252b5132 RH |
1908 | else if (fixP->fx_pcrel) |
1909 | { | |
252b5132 RH |
1910 | /* ELF relocations are against symbols. |
1911 | If this symbol is in a different section then we need to leave it for | |
1912 | the linker to deal with. Unfortunately, md_pcrel_from can't tell, | |
1913 | so we have to undo it's effects here. */ | |
1914 | if (S_IS_DEFINED (fixP->fx_addsy) | |
1915 | && S_GET_SEGMENT (fixP->fx_addsy) != seg) | |
1916 | value += md_pcrel_from (fixP); | |
1917 | } | |
1918 | else | |
1919 | { | |
1920 | value = fixP->fx_offset; | |
1921 | if (fixP->fx_subsy != (symbolS *) NULL) | |
1922 | { | |
1923 | if (S_GET_SEGMENT (fixP->fx_subsy) == absolute_section) | |
1924 | value -= S_GET_VALUE (fixP->fx_subsy); | |
1925 | else | |
1926 | { | |
1927 | /* We can't actually support subtracting a symbol. */ | |
1928 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
0d2bcfaf | 1929 | "expression too complex"); |
252b5132 RH |
1930 | } |
1931 | } | |
1932 | } | |
1933 | ||
1934 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) | |
1935 | { | |
1936 | int opindex; | |
1937 | const struct arc_operand *operand; | |
1938 | char *where; | |
1939 | arc_insn insn; | |
1940 | ||
1941 | opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; | |
1942 | ||
1943 | operand = &arc_operands[opindex]; | |
1944 | ||
1945 | /* Fetch the instruction, insert the fully resolved operand | |
1946 | value, and stuff the instruction back again. */ | |
1947 | where = fixP->fx_frag->fr_literal + fixP->fx_where; | |
1948 | if (target_big_endian) | |
1949 | insn = bfd_getb32 ((unsigned char *) where); | |
1950 | else | |
1951 | insn = bfd_getl32 ((unsigned char *) where); | |
1952 | insn = arc_insert_operand (insn, operand, -1, NULL, (offsetT) value, | |
1953 | fixP->fx_file, fixP->fx_line); | |
1954 | if (target_big_endian) | |
1955 | bfd_putb32 ((bfd_vma) insn, (unsigned char *) where); | |
1956 | else | |
1957 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); | |
1958 | ||
1959 | if (fixP->fx_done) | |
1960 | { | |
1961 | /* Nothing else to do here. */ | |
94f592af | 1962 | return; |
252b5132 RH |
1963 | } |
1964 | ||
1965 | /* Determine a BFD reloc value based on the operand information. | |
1966 | We are only prepared to turn a few of the operands into relocs. | |
1967 | !!! Note that we can't handle limm values here. Since we're using | |
1968 | implicit addends the addend must be inserted into the instruction, | |
1969 | however, the opcode insertion routines currently do nothing with | |
1970 | limm values. */ | |
1971 | if (operand->fmt == 'B') | |
1972 | { | |
1973 | assert ((operand->flags & ARC_OPERAND_RELATIVE_BRANCH) != 0 | |
1974 | && operand->bits == 20 | |
1975 | && operand->shift == 7); | |
1976 | fixP->fx_r_type = BFD_RELOC_ARC_B22_PCREL; | |
1977 | } | |
0d2bcfaf | 1978 | else if (operand->fmt == 'J') |
252b5132 RH |
1979 | { |
1980 | assert ((operand->flags & ARC_OPERAND_ABSOLUTE_BRANCH) != 0 | |
1981 | && operand->bits == 24 | |
1982 | && operand->shift == 32); | |
1983 | fixP->fx_r_type = BFD_RELOC_ARC_B26; | |
1984 | } | |
0d2bcfaf | 1985 | else if (operand->fmt == 'L') |
252b5132 RH |
1986 | { |
1987 | assert ((operand->flags & ARC_OPERAND_LIMM) != 0 | |
1988 | && operand->bits == 32 | |
1989 | && operand->shift == 32); | |
1990 | fixP->fx_r_type = BFD_RELOC_32; | |
1991 | } | |
1992 | else | |
1993 | { | |
1994 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
0d2bcfaf | 1995 | "unresolved expression that must be resolved"); |
252b5132 | 1996 | fixP->fx_done = 1; |
94f592af | 1997 | return; |
252b5132 RH |
1998 | } |
1999 | } | |
2000 | else | |
2001 | { | |
2002 | switch (fixP->fx_r_type) | |
2003 | { | |
2004 | case BFD_RELOC_8: | |
2005 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
2006 | value, 1); | |
2007 | break; | |
2008 | case BFD_RELOC_16: | |
2009 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
2010 | value, 2); | |
2011 | break; | |
2012 | case BFD_RELOC_32: | |
2013 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
2014 | value, 4); | |
2015 | break; | |
2016 | #if 0 | |
2017 | case BFD_RELOC_64: | |
2018 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
2019 | value, 8); | |
2020 | break; | |
2021 | #endif | |
2022 | case BFD_RELOC_ARC_B26: | |
2023 | /* If !fixP->fx_done then `value' is an implicit addend. | |
2024 | We must shift it right by 2 in this case as well because the | |
2025 | linker performs the relocation and then adds this in (as opposed | |
2026 | to adding this in and then shifting right by 2). */ | |
2027 | value >>= 2; | |
2028 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
2029 | value, 4); | |
2030 | break; | |
2031 | default: | |
2032 | abort (); | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | fixP->fx_addnumber = value; | |
252b5132 RH |
2037 | } |
2038 | ||
2039 | /* Translate internal representation of relocation info to BFD target | |
2040 | format. */ | |
2041 | ||
2042 | arelent * | |
2043 | tc_gen_reloc (section, fixP) | |
4a314ec8 | 2044 | asection *section ATTRIBUTE_UNUSED; |
252b5132 RH |
2045 | fixS *fixP; |
2046 | { | |
2047 | arelent *reloc; | |
2048 | ||
2049 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
2050 | ||
0d2bcfaf | 2051 | reloc->sym_ptr_ptr = &fixP->fx_addsy->bsym; |
252b5132 RH |
2052 | reloc->address = fixP->fx_frag->fr_address + fixP->fx_where; |
2053 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
2054 | if (reloc->howto == (reloc_howto_type *) NULL) | |
2055 | { | |
2056 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
0d2bcfaf | 2057 | "internal error: can't export reloc type %d (`%s')", |
19203624 KH |
2058 | fixP->fx_r_type, |
2059 | bfd_get_reloc_code_name (fixP->fx_r_type)); | |
252b5132 RH |
2060 | return NULL; |
2061 | } | |
2062 | ||
2063 | assert (!fixP->fx_pcrel == !reloc->howto->pc_relative); | |
2064 | ||
19203624 KH |
2065 | /* Set addend to account for PC being advanced one insn before the |
2066 | target address is computed, drop fx_addnumber as it is handled | |
2067 | elsewhere mlm */ | |
252b5132 | 2068 | |
19203624 | 2069 | reloc->addend = (fixP->fx_pcrel ? -4 : 0); |
252b5132 | 2070 | |
0d2bcfaf | 2071 | return reloc; |
252b5132 | 2072 | } |