Commit | Line | Data |
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a85d7ed0 | 1 | /* tc-s390.c -- Assemble for the S390 |
ae6063d4 | 2 | Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
a85d7ed0 NC |
3 | Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
4 | ||
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
98d3f06f | 20 | 02111-1307, USA. */ |
a85d7ed0 NC |
21 | |
22 | #include <stdio.h> | |
a85d7ed0 | 23 | #include "as.h" |
3882b010 | 24 | #include "safe-ctype.h" |
a85d7ed0 NC |
25 | #include "subsegs.h" |
26 | #include "struc-symbol.h" | |
a161fe53 | 27 | #include "dwarf2dbg.h" |
a85d7ed0 NC |
28 | |
29 | #include "opcode/s390.h" | |
30 | #include "elf/s390.h" | |
31 | ||
16a419ba | 32 | /* The default architecture. */ |
a85d7ed0 NC |
33 | #ifndef DEFAULT_ARCH |
34 | #define DEFAULT_ARCH "s390" | |
35 | #endif | |
36 | static char *default_arch = DEFAULT_ARCH; | |
37 | /* Either 32 or 64, selects file format. */ | |
38 | static int s390_arch_size; | |
16a419ba | 39 | /* Current architecture. Start with the smallest instruction set. */ |
a85d7ed0 NC |
40 | static enum s390_opcode_arch_val current_architecture = S390_OPCODE_ESA; |
41 | static int current_arch_mask = 1 << S390_OPCODE_ESA; | |
42 | static int current_arch_requested = 0; | |
43 | ||
b34976b6 | 44 | /* Whether to use user friendly register names. Default is TRUE. */ |
a85d7ed0 | 45 | #ifndef TARGET_REG_NAMES_P |
b34976b6 | 46 | #define TARGET_REG_NAMES_P TRUE |
a85d7ed0 NC |
47 | #endif |
48 | ||
b34976b6 | 49 | static bfd_boolean reg_names_p = TARGET_REG_NAMES_P; |
a85d7ed0 | 50 | |
16a419ba | 51 | /* Set to TRUE if we want to warn about zero base/index registers. */ |
b34976b6 | 52 | static bfd_boolean warn_areg_zero = FALSE; |
16a419ba | 53 | |
a85d7ed0 NC |
54 | /* Generic assembler global variables which must be defined by all |
55 | targets. */ | |
56 | ||
57 | const char comment_chars[] = "#"; | |
58 | ||
59 | /* Characters which start a comment at the beginning of a line. */ | |
60 | const char line_comment_chars[] = "#"; | |
61 | ||
62 | /* Characters which may be used to separate multiple commands on a | |
63 | single line. */ | |
64 | const char line_separator_chars[] = ";"; | |
65 | ||
66 | /* Characters which are used to indicate an exponent in a floating | |
67 | point number. */ | |
68 | const char EXP_CHARS[] = "eE"; | |
69 | ||
70 | /* Characters which mean that a number is a floating point constant, | |
71 | as in 0d1.0. */ | |
72 | const char FLT_CHARS[] = "dD"; | |
73 | ||
74 | /* The target specific pseudo-ops which we support. */ | |
75 | ||
76 | /* Define the prototypes for the pseudo-ops */ | |
77 | static void s390_byte PARAMS ((int)); | |
78 | static void s390_elf_cons PARAMS ((int)); | |
79 | static void s390_bss PARAMS ((int)); | |
80 | static void s390_insn PARAMS ((int)); | |
81 | static void s390_literals PARAMS ((int)); | |
82 | ||
83 | const pseudo_typeS md_pseudo_table[] = | |
84 | { | |
85 | { "align", s_align_bytes, 0 }, | |
98d3f06f | 86 | /* Pseudo-ops which must be defined. */ |
198ce79b | 87 | { "bss", s390_bss, 0 }, |
a85d7ed0 NC |
88 | { "insn", s390_insn, 0 }, |
89 | /* Pseudo-ops which must be overridden. */ | |
90 | { "byte", s390_byte, 0 }, | |
91 | { "short", s390_elf_cons, 2 }, | |
92 | { "long", s390_elf_cons, 4 }, | |
93 | { "quad", s390_elf_cons, 8 }, | |
94 | { "ltorg", s390_literals, 0 }, | |
95 | { "string", stringer, 2 }, | |
96 | { NULL, NULL, 0 } | |
97 | }; | |
98 | ||
99 | ||
100 | /* Structure to hold information about predefined registers. */ | |
101 | struct pd_reg | |
102 | { | |
103 | char *name; | |
104 | int value; | |
105 | }; | |
106 | ||
107 | /* List of registers that are pre-defined: | |
108 | ||
109 | Each access register has a predefined name of the form: | |
110 | a<reg_num> which has the value <reg_num>. | |
111 | ||
112 | Each control register has a predefined name of the form: | |
113 | c<reg_num> which has the value <reg_num>. | |
114 | ||
115 | Each general register has a predefined name of the form: | |
116 | r<reg_num> which has the value <reg_num>. | |
117 | ||
118 | Each floating point register a has predefined name of the form: | |
119 | f<reg_num> which has the value <reg_num>. | |
120 | ||
121 | There are individual registers as well: | |
122 | sp has the value 15 | |
123 | lit has the value 12 | |
124 | ||
98d3f06f | 125 | The table is sorted. Suitable for searching by a binary search. */ |
a85d7ed0 NC |
126 | |
127 | static const struct pd_reg pre_defined_registers[] = | |
128 | { | |
129 | { "a0", 0 }, /* Access registers */ | |
130 | { "a1", 1 }, | |
131 | { "a10", 10 }, | |
132 | { "a11", 11 }, | |
133 | { "a12", 12 }, | |
134 | { "a13", 13 }, | |
135 | { "a14", 14 }, | |
136 | { "a15", 15 }, | |
137 | { "a2", 2 }, | |
138 | { "a3", 3 }, | |
139 | { "a4", 4 }, | |
140 | { "a5", 5 }, | |
141 | { "a6", 6 }, | |
142 | { "a7", 7 }, | |
143 | { "a8", 8 }, | |
144 | { "a9", 9 }, | |
145 | ||
146 | { "c0", 0 }, /* Control registers */ | |
147 | { "c1", 1 }, | |
148 | { "c10", 10 }, | |
149 | { "c11", 11 }, | |
150 | { "c12", 12 }, | |
151 | { "c13", 13 }, | |
152 | { "c14", 14 }, | |
153 | { "c15", 15 }, | |
154 | { "c2", 2 }, | |
155 | { "c3", 3 }, | |
156 | { "c4", 4 }, | |
157 | { "c5", 5 }, | |
158 | { "c6", 6 }, | |
159 | { "c7", 7 }, | |
160 | { "c8", 8 }, | |
161 | { "c9", 9 }, | |
162 | ||
163 | { "f0", 0 }, /* Floating point registers */ | |
198ce79b AJ |
164 | { "f1", 1 }, |
165 | { "f10", 10 }, | |
166 | { "f11", 11 }, | |
167 | { "f12", 12 }, | |
168 | { "f13", 13 }, | |
169 | { "f14", 14 }, | |
170 | { "f15", 15 }, | |
171 | { "f2", 2 }, | |
172 | { "f3", 3 }, | |
173 | { "f4", 4 }, | |
174 | { "f5", 5 }, | |
175 | { "f6", 6 }, | |
176 | { "f7", 7 }, | |
177 | { "f8", 8 }, | |
178 | { "f9", 9 }, | |
a85d7ed0 NC |
179 | |
180 | { "lit", 13 }, /* Pointer to literal pool */ | |
181 | ||
182 | { "r0", 0 }, /* General purpose registers */ | |
183 | { "r1", 1 }, | |
184 | { "r10", 10 }, | |
185 | { "r11", 11 }, | |
186 | { "r12", 12 }, | |
187 | { "r13", 13 }, | |
188 | { "r14", 14 }, | |
189 | { "r15", 15 }, | |
190 | { "r2", 2 }, | |
191 | { "r3", 3 }, | |
192 | { "r4", 4 }, | |
193 | { "r5", 5 }, | |
194 | { "r6", 6 }, | |
195 | { "r7", 7 }, | |
196 | { "r8", 8 }, | |
197 | { "r9", 9 }, | |
198 | ||
199 | { "sp", 15 }, /* Stack pointer */ | |
200 | ||
201 | }; | |
202 | ||
07726851 | 203 | #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg)) |
a85d7ed0 | 204 | |
9d654c1c AJ |
205 | static int reg_name_search |
206 | PARAMS ((const struct pd_reg *, int, const char *)); | |
b34976b6 | 207 | static bfd_boolean register_name PARAMS ((expressionS *)); |
9d654c1c AJ |
208 | static void init_default_arch PARAMS ((void)); |
209 | static void s390_insert_operand | |
210 | PARAMS ((unsigned char *, const struct s390_operand *, offsetT, char *, | |
211 | unsigned int)); | |
212 | static char *md_gather_operands | |
213 | PARAMS ((char *, unsigned char *, const struct s390_opcode *)); | |
214 | ||
a85d7ed0 NC |
215 | /* Given NAME, find the register number associated with that name, return |
216 | the integer value associated with the given name or -1 on failure. */ | |
217 | ||
218 | static int | |
219 | reg_name_search (regs, regcount, name) | |
220 | const struct pd_reg *regs; | |
221 | int regcount; | |
222 | const char *name; | |
223 | { | |
224 | int middle, low, high; | |
225 | int cmp; | |
226 | ||
227 | low = 0; | |
228 | high = regcount - 1; | |
229 | ||
230 | do | |
231 | { | |
232 | middle = (low + high) / 2; | |
233 | cmp = strcasecmp (name, regs[middle].name); | |
234 | if (cmp < 0) | |
235 | high = middle - 1; | |
236 | else if (cmp > 0) | |
237 | low = middle + 1; | |
238 | else | |
239 | return regs[middle].value; | |
240 | } | |
241 | while (low <= high); | |
242 | ||
243 | return -1; | |
244 | } | |
245 | ||
246 | ||
247 | /* | |
248 | * Summary of register_name(). | |
249 | * | |
250 | * in: Input_line_pointer points to 1st char of operand. | |
251 | * | |
252 | * out: A expressionS. | |
253 | * The operand may have been a register: in this case, X_op == O_register, | |
254 | * X_add_number is set to the register number, and truth is returned. | |
255 | * Input_line_pointer->(next non-blank) char after operand, or is in its | |
256 | * original state. | |
257 | */ | |
258 | ||
b34976b6 | 259 | static bfd_boolean |
a85d7ed0 NC |
260 | register_name (expressionP) |
261 | expressionS *expressionP; | |
262 | { | |
263 | int reg_number; | |
264 | char *name; | |
265 | char *start; | |
266 | char c; | |
267 | ||
468cced8 | 268 | /* Find the spelling of the operand. */ |
a85d7ed0 | 269 | start = name = input_line_pointer; |
3882b010 | 270 | if (name[0] == '%' && ISALPHA (name[1])) |
a85d7ed0 NC |
271 | name = ++input_line_pointer; |
272 | else | |
b34976b6 | 273 | return FALSE; |
a85d7ed0 NC |
274 | |
275 | c = get_symbol_end (); | |
276 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name); | |
277 | ||
468cced8 AM |
278 | /* Put back the delimiting char. */ |
279 | *input_line_pointer = c; | |
280 | ||
281 | /* Look to see if it's in the register table. */ | |
198ce79b | 282 | if (reg_number >= 0) |
a85d7ed0 NC |
283 | { |
284 | expressionP->X_op = O_register; | |
285 | expressionP->X_add_number = reg_number; | |
198ce79b | 286 | |
468cced8 | 287 | /* Make the rest nice. */ |
a85d7ed0 NC |
288 | expressionP->X_add_symbol = NULL; |
289 | expressionP->X_op_symbol = NULL; | |
b34976b6 | 290 | return TRUE; |
a85d7ed0 | 291 | } |
468cced8 AM |
292 | |
293 | /* Reset the line as if we had not done anything. */ | |
294 | input_line_pointer = start; | |
b34976b6 | 295 | return FALSE; |
a85d7ed0 NC |
296 | } |
297 | ||
298 | /* Local variables. */ | |
299 | ||
300 | /* Opformat hash table. */ | |
301 | static struct hash_control *s390_opformat_hash; | |
302 | ||
303 | /* Opcode hash table. */ | |
304 | static struct hash_control *s390_opcode_hash; | |
305 | ||
306 | /* Flags to set in the elf header */ | |
307 | static flagword s390_flags = 0; | |
308 | ||
309 | symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */ | |
310 | ||
311 | #ifndef WORKING_DOT_WORD | |
312 | const int md_short_jump_size = 4; | |
313 | const int md_long_jump_size = 4; | |
314 | #endif | |
315 | ||
5a38dc70 | 316 | const char *md_shortopts = "A:m:kVQ:"; |
a85d7ed0 NC |
317 | struct option md_longopts[] = { |
318 | {NULL, no_argument, NULL, 0} | |
319 | }; | |
07726851 | 320 | size_t md_longopts_size = sizeof (md_longopts); |
a85d7ed0 NC |
321 | |
322 | /* Initialize the default opcode arch and word size from the default | |
323 | architecture name. */ | |
324 | static void | |
325 | init_default_arch () | |
326 | { | |
327 | if (current_arch_requested) | |
328 | return; | |
07855bec | 329 | |
07726851 | 330 | if (strcmp (default_arch, "s390") == 0) |
07855bec NC |
331 | { |
332 | s390_arch_size = 32; | |
333 | current_architecture = S390_OPCODE_ESA; | |
334 | } | |
07726851 | 335 | else if (strcmp (default_arch, "s390x") == 0) |
07855bec NC |
336 | { |
337 | s390_arch_size = 64; | |
338 | current_architecture = S390_OPCODE_ESAME; | |
339 | } | |
340 | else | |
a85d7ed0 NC |
341 | as_fatal ("Invalid default architecture, broken assembler."); |
342 | current_arch_mask = 1 << current_architecture; | |
343 | } | |
344 | ||
345 | /* Called by TARGET_FORMAT. */ | |
346 | const char * | |
347 | s390_target_format () | |
348 | { | |
349 | /* We don't get a chance to initialize anything before we're called, | |
350 | so handle that now. */ | |
351 | if (! s390_arch_size) | |
352 | init_default_arch (); | |
353 | ||
354 | return s390_arch_size == 64 ? "elf64-s390" : "elf32-s390"; | |
355 | } | |
356 | ||
357 | int | |
358 | md_parse_option (c, arg) | |
359 | int c; | |
360 | char *arg; | |
361 | { | |
07855bec NC |
362 | switch (c) |
363 | { | |
364 | /* -k: Ignore for FreeBSD compatibility. */ | |
365 | case 'k': | |
366 | break; | |
367 | case 'm': | |
368 | if (arg != NULL && strcmp (arg, "regnames") == 0) | |
b34976b6 | 369 | reg_names_p = TRUE; |
198ce79b | 370 | |
07855bec | 371 | else if (arg != NULL && strcmp (arg, "no-regnames") == 0) |
b34976b6 | 372 | reg_names_p = FALSE; |
198ce79b | 373 | |
16a419ba NC |
374 | else if (arg != NULL && strcmp (arg, "warn-areg-zero") == 0) |
375 | warn_areg_zero = TRUE; | |
376 | ||
ff0fb565 | 377 | else if (arg != NULL && strcmp (arg, "31") == 0) |
75504fed | 378 | s390_arch_size = 32; |
ff0fb565 MS |
379 | |
380 | else if (arg != NULL && strcmp (arg, "64") == 0) | |
381 | s390_arch_size = 64; | |
382 | ||
07855bec NC |
383 | else |
384 | { | |
385 | as_bad (_("invalid switch -m%s"), arg); | |
386 | return 0; | |
387 | } | |
388 | break; | |
198ce79b | 389 | |
07855bec NC |
390 | case 'A': |
391 | if (arg != NULL && strcmp (arg, "esa") == 0) | |
819e6420 | 392 | current_architecture = S390_OPCODE_ESA; |
07855bec | 393 | else if (arg != NULL && strcmp (arg, "esame") == 0) |
819e6420 | 394 | current_architecture = S390_OPCODE_ESAME; |
07855bec NC |
395 | else |
396 | as_bad ("invalid architecture -A%s", arg); | |
397 | current_arch_mask = 1 << current_architecture; | |
398 | current_arch_requested = 1; | |
399 | break; | |
400 | ||
401 | /* -V: SVR4 argument to print version ID. */ | |
402 | case 'V': | |
403 | print_version_id (); | |
404 | break; | |
198ce79b | 405 | |
07855bec NC |
406 | /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section |
407 | should be emitted or not. FIXME: Not implemented. */ | |
408 | case 'Q': | |
409 | break; | |
198ce79b | 410 | |
07855bec NC |
411 | default: |
412 | return 0; | |
413 | } | |
198ce79b | 414 | |
a85d7ed0 NC |
415 | return 1; |
416 | } | |
417 | ||
418 | void | |
419 | md_show_usage (stream) | |
420 | FILE *stream; | |
421 | { | |
07855bec | 422 | fprintf (stream, _("\ |
16a419ba NC |
423 | S390 options:\n\ |
424 | -mregnames Allow symbolic names for registers\n\ | |
425 | -mwarn-areg-zero Warn about zero base/index registers\n\ | |
ff0fb565 MS |
426 | -mno-regnames Do not allow symbolic names for registers\n\ |
427 | -m31 Set file format to 31 bit format\n\ | |
428 | -m64 Set file format to 64 bit format\n")); | |
07855bec | 429 | fprintf (stream, _("\ |
16a419ba NC |
430 | -V print assembler version number\n\ |
431 | -Qy, -Qn ignored\n")); | |
a85d7ed0 NC |
432 | } |
433 | ||
434 | /* This function is called when the assembler starts up. It is called | |
435 | after the options have been parsed and the output file has been | |
16a419ba | 436 | opened. */ |
a85d7ed0 NC |
437 | |
438 | void | |
439 | md_begin () | |
440 | { | |
441 | register const struct s390_opcode *op; | |
442 | const struct s390_opcode *op_end; | |
b34976b6 | 443 | bfd_boolean dup_insn = FALSE; |
a85d7ed0 NC |
444 | const char *retval; |
445 | ||
ff0fb565 MS |
446 | /* Give a warning if the combination -m64-bit and -Aesa is used. */ |
447 | if (s390_arch_size == 64 && current_arch_mask == (1 << S390_OPCODE_ESA)) | |
448 | as_warn ("The 64 bit file format is used without esame instructions."); | |
449 | ||
16a419ba | 450 | /* Set the ELF flags if desired. */ |
a85d7ed0 NC |
451 | if (s390_flags) |
452 | bfd_set_private_flags (stdoutput, s390_flags); | |
453 | ||
454 | /* Insert the opcode formats into a hash table. */ | |
455 | s390_opformat_hash = hash_new (); | |
456 | ||
457 | op_end = s390_opformats + s390_num_opformats; | |
07855bec NC |
458 | for (op = s390_opformats; op < op_end; op++) |
459 | { | |
460 | retval = hash_insert (s390_opformat_hash, op->name, (PTR) op); | |
461 | if (retval != (const char *) NULL) | |
462 | { | |
463 | as_bad (_("Internal assembler error for instruction format %s"), | |
464 | op->name); | |
b34976b6 | 465 | dup_insn = TRUE; |
07855bec NC |
466 | } |
467 | } | |
a85d7ed0 NC |
468 | |
469 | /* Insert the opcodes into a hash table. */ | |
470 | s390_opcode_hash = hash_new (); | |
471 | ||
472 | op_end = s390_opcodes + s390_num_opcodes; | |
07855bec NC |
473 | for (op = s390_opcodes; op < op_end; op++) |
474 | { | |
475 | retval = hash_insert (s390_opcode_hash, op->name, (PTR) op); | |
476 | if (retval != (const char *) NULL) | |
477 | { | |
478 | as_bad (_("Internal assembler error for instruction %s"), op->name); | |
b34976b6 | 479 | dup_insn = TRUE; |
07855bec NC |
480 | } |
481 | } | |
482 | ||
a85d7ed0 NC |
483 | if (dup_insn) |
484 | abort (); | |
485 | ||
486 | record_alignment (text_section, 2); | |
487 | record_alignment (data_section, 2); | |
488 | record_alignment (bss_section, 2); | |
489 | ||
490 | } | |
491 | ||
492 | /* Called after all assembly has been done. */ | |
493 | void | |
494 | s390_md_end () | |
495 | { | |
07855bec | 496 | if (s390_arch_size == 64) |
ff0fb565 | 497 | bfd_set_arch_mach (stdoutput, bfd_arch_s390, bfd_mach_s390_64); |
07855bec | 498 | else |
ff0fb565 | 499 | bfd_set_arch_mach (stdoutput, bfd_arch_s390, bfd_mach_s390_31); |
a85d7ed0 NC |
500 | } |
501 | ||
502 | void | |
503 | s390_align_code (fragP, count) | |
504 | fragS *fragP; | |
505 | int count; | |
506 | { | |
507 | /* We use nop pattern 0x0707. */ | |
07855bec NC |
508 | if (count > 0) |
509 | { | |
07726851 | 510 | memset (fragP->fr_literal + fragP->fr_fix, 0x07, count); |
07855bec NC |
511 | fragP->fr_var = count; |
512 | } | |
a85d7ed0 NC |
513 | } |
514 | ||
515 | /* Insert an operand value into an instruction. */ | |
516 | ||
517 | static void | |
518 | s390_insert_operand (insn, operand, val, file, line) | |
519 | unsigned char *insn; | |
520 | const struct s390_operand *operand; | |
521 | offsetT val; | |
522 | char *file; | |
523 | unsigned int line; | |
524 | { | |
525 | addressT uval; | |
526 | int offset; | |
527 | ||
07855bec NC |
528 | if (operand->flags & (S390_OPERAND_SIGNED|S390_OPERAND_PCREL)) |
529 | { | |
530 | offsetT min, max; | |
531 | ||
532 | max = ((offsetT) 1 << (operand->bits - 1)) - 1; | |
533 | min = - ((offsetT) 1 << (operand->bits - 1)); | |
534 | /* Halve PCREL operands. */ | |
535 | if (operand->flags & S390_OPERAND_PCREL) | |
536 | val >>= 1; | |
537 | /* Check for underflow / overflow. */ | |
538 | if (val < min || val > max) | |
539 | { | |
540 | const char *err = | |
541 | "operand out of range (%s not between %ld and %ld)"; | |
542 | char buf[100]; | |
543 | ||
544 | if (operand->flags & S390_OPERAND_PCREL) | |
545 | { | |
546 | val <<= 1; | |
547 | min <<= 1; | |
548 | max <<= 1; | |
549 | } | |
550 | sprint_value (buf, val); | |
551 | if (file == (char *) NULL) | |
552 | as_bad (err, buf, (int) min, (int) max); | |
553 | else | |
554 | as_bad_where (file, line, err, buf, (int) min, (int) max); | |
555 | return; | |
556 | } | |
557 | /* val is ok, now restrict it to operand->bits bits. */ | |
558 | uval = (addressT) val & ((((addressT) 1 << (operand->bits-1)) << 1) - 1); | |
a85d7ed0 | 559 | } |
07855bec NC |
560 | else |
561 | { | |
562 | addressT min, max; | |
198ce79b | 563 | |
98d3f06f | 564 | max = (((addressT) 1 << (operand->bits - 1)) << 1) - 1; |
07855bec NC |
565 | min = (offsetT) 0; |
566 | uval = (addressT) val; | |
567 | /* Length x in an instructions has real length x+1. */ | |
568 | if (operand->flags & S390_OPERAND_LENGTH) | |
569 | uval--; | |
570 | /* Check for underflow / overflow. */ | |
571 | if (uval < min || uval > max) | |
572 | { | |
573 | const char *err = | |
574 | "operand out of range (%s not between %ld and %ld)"; | |
575 | char buf[100]; | |
198ce79b | 576 | |
07855bec NC |
577 | if (operand->flags & S390_OPERAND_LENGTH) |
578 | { | |
579 | uval++; | |
580 | min++; | |
581 | max++; | |
582 | } | |
583 | sprint_value (buf, uval); | |
584 | if (file == (char *) NULL) | |
585 | as_bad (err, buf, (int) min, (int) max); | |
586 | else | |
587 | as_bad_where (file, line, err, buf, (int) min, (int) max); | |
588 | return; | |
589 | } | |
a85d7ed0 | 590 | } |
a85d7ed0 NC |
591 | |
592 | /* Insert fragments of the operand byte for byte. */ | |
593 | offset = operand->shift + operand->bits; | |
594 | uval <<= (-offset) & 7; | |
98d3f06f | 595 | insn += (offset - 1) / 8; |
07855bec NC |
596 | while (uval != 0) |
597 | { | |
598 | *insn-- |= uval; | |
599 | uval >>= 8; | |
600 | } | |
a85d7ed0 NC |
601 | } |
602 | ||
603 | /* Structure used to hold suffixes. */ | |
07855bec NC |
604 | typedef enum |
605 | { | |
606 | ELF_SUFFIX_NONE = 0, | |
607 | ELF_SUFFIX_GOT, | |
608 | ELF_SUFFIX_PLT, | |
2a19f73f MS |
609 | ELF_SUFFIX_GOTENT, |
610 | ELF_SUFFIX_GOTOFF, | |
611 | ELF_SUFFIX_GOTPLT, | |
612 | ELF_SUFFIX_PLTOFF | |
07855bec NC |
613 | } |
614 | elf_suffix_type; | |
615 | ||
616 | struct map_bfd | |
617 | { | |
618 | char *string; | |
619 | int length; | |
620 | elf_suffix_type suffix; | |
621 | }; | |
a85d7ed0 | 622 | |
9d654c1c AJ |
623 | static elf_suffix_type s390_elf_suffix PARAMS ((char **, expressionS *)); |
624 | static int s390_exp_compare PARAMS ((expressionS *exp1, expressionS *exp2)); | |
625 | static elf_suffix_type s390_lit_suffix | |
626 | PARAMS ((char **, expressionS *, elf_suffix_type)); | |
627 | ||
628 | ||
a85d7ed0 NC |
629 | /* Parse @got/@plt/@gotoff. and return the desired relocation. */ |
630 | static elf_suffix_type | |
631 | s390_elf_suffix (str_p, exp_p) | |
632 | char **str_p; | |
633 | expressionS *exp_p; | |
634 | { | |
07855bec NC |
635 | static struct map_bfd mapping[] = |
636 | { | |
a85d7ed0 NC |
637 | { "got", 3, ELF_SUFFIX_GOT }, |
638 | { "got12", 5, ELF_SUFFIX_GOT }, | |
639 | { "plt", 3, ELF_SUFFIX_PLT }, | |
640 | { "gotent", 6, ELF_SUFFIX_GOTENT }, | |
2a19f73f MS |
641 | { "gotoff", 6, ELF_SUFFIX_GOTOFF }, |
642 | { "gotplt", 6, ELF_SUFFIX_GOTPLT }, | |
643 | { "pltoff", 6, ELF_SUFFIX_PLTOFF }, | |
a85d7ed0 NC |
644 | { NULL, 0, ELF_SUFFIX_NONE } |
645 | }; | |
646 | ||
647 | struct map_bfd *ptr; | |
648 | char *str = *str_p; | |
649 | char *ident; | |
650 | int len; | |
651 | ||
652 | if (*str++ != '@') | |
653 | return ELF_SUFFIX_NONE; | |
654 | ||
655 | ident = str; | |
3882b010 | 656 | while (ISALNUM (*str)) |
a85d7ed0 NC |
657 | str++; |
658 | len = str - ident; | |
659 | ||
660 | for (ptr = &mapping[0]; ptr->length > 0; ptr++) | |
16a419ba NC |
661 | if (len == ptr->length |
662 | && strncasecmp (ident, ptr->string, ptr->length) == 0) | |
07855bec NC |
663 | { |
664 | if (exp_p->X_add_number != 0) | |
665 | as_warn (_("identifier+constant@%s means identifier@%s+constant"), | |
666 | ptr->string, ptr->string); | |
667 | /* Now check for identifier@suffix+constant. */ | |
668 | if (*str == '-' || *str == '+') | |
669 | { | |
670 | char *orig_line = input_line_pointer; | |
671 | expressionS new_exp; | |
672 | ||
673 | input_line_pointer = str; | |
674 | expression (&new_exp); | |
675 | ||
676 | switch (new_exp.X_op) | |
677 | { | |
678 | case O_constant: /* X_add_number (a constant expression). */ | |
679 | exp_p->X_add_number += new_exp.X_add_number; | |
680 | str = input_line_pointer; | |
681 | break; | |
682 | case O_symbol: /* X_add_symbol + X_add_number. */ | |
683 | /* this case is used for e.g. xyz@PLT+.Label. */ | |
684 | exp_p->X_add_number += new_exp.X_add_number; | |
685 | exp_p->X_op_symbol = new_exp.X_add_symbol; | |
686 | exp_p->X_op = O_add; | |
687 | str = input_line_pointer; | |
688 | break; | |
689 | case O_uminus: /* (- X_add_symbol) + X_add_number. */ | |
690 | /* this case is used for e.g. xyz@PLT-.Label. */ | |
691 | exp_p->X_add_number += new_exp.X_add_number; | |
692 | exp_p->X_op_symbol = new_exp.X_add_symbol; | |
693 | exp_p->X_op = O_subtract; | |
694 | str = input_line_pointer; | |
695 | break; | |
696 | default: | |
697 | break; | |
698 | } | |
699 | ||
700 | /* If s390_elf_suffix has not been called with | |
701 | &input_line_pointer as first parameter, we have | |
702 | clobbered the input_line_pointer. We have to | |
703 | undo that. */ | |
704 | if (&input_line_pointer != str_p) | |
705 | input_line_pointer = orig_line; | |
a85d7ed0 | 706 | } |
07855bec NC |
707 | *str_p = str; |
708 | return ptr->suffix; | |
a85d7ed0 | 709 | } |
a85d7ed0 NC |
710 | |
711 | return BFD_RELOC_UNUSED; | |
712 | } | |
713 | ||
714 | /* Structure used to hold a literal pool entry. */ | |
07855bec NC |
715 | struct s390_lpe |
716 | { | |
717 | struct s390_lpe *next; | |
718 | expressionS ex; | |
719 | FLONUM_TYPE floatnum; /* used if X_op == O_big && X_add_number <= 0 */ | |
720 | LITTLENUM_TYPE bignum[4]; /* used if X_op == O_big && X_add_number > 0 */ | |
721 | int nbytes; | |
722 | bfd_reloc_code_real_type reloc; | |
723 | symbolS *sym; | |
724 | }; | |
a85d7ed0 NC |
725 | |
726 | static struct s390_lpe *lpe_free_list = NULL; | |
727 | static struct s390_lpe *lpe_list = NULL; | |
728 | static struct s390_lpe *lpe_list_tail = NULL; | |
729 | static symbolS *lp_sym = NULL; | |
730 | static int lp_count = 0; | |
731 | static int lpe_count = 0; | |
732 | ||
733 | static int | |
98d3f06f | 734 | s390_exp_compare (exp1, exp2) |
a85d7ed0 NC |
735 | expressionS *exp1; |
736 | expressionS *exp2; | |
737 | { | |
738 | if (exp1->X_op != exp2->X_op) | |
739 | return 0; | |
740 | ||
07855bec NC |
741 | switch (exp1->X_op) |
742 | { | |
743 | case O_constant: /* X_add_number must be equal. */ | |
744 | case O_register: | |
745 | return exp1->X_add_number == exp2->X_add_number; | |
746 | ||
747 | case O_big: | |
198ce79b | 748 | as_bad (_("Can't handle O_big in s390_exp_compare")); |
07855bec NC |
749 | |
750 | case O_symbol: /* X_add_symbol & X_add_number must be equal. */ | |
751 | case O_symbol_rva: | |
752 | case O_uminus: | |
753 | case O_bit_not: | |
754 | case O_logical_not: | |
16a419ba NC |
755 | return (exp1->X_add_symbol == exp2->X_add_symbol) |
756 | && (exp1->X_add_number == exp2->X_add_number); | |
07855bec NC |
757 | |
758 | case O_multiply: /* X_add_symbol,X_op_symbol&X_add_number must be equal. */ | |
759 | case O_divide: | |
760 | case O_modulus: | |
761 | case O_left_shift: | |
762 | case O_right_shift: | |
763 | case O_bit_inclusive_or: | |
764 | case O_bit_or_not: | |
765 | case O_bit_exclusive_or: | |
766 | case O_bit_and: | |
767 | case O_add: | |
768 | case O_subtract: | |
769 | case O_eq: | |
770 | case O_ne: | |
771 | case O_lt: | |
772 | case O_le: | |
773 | case O_ge: | |
774 | case O_gt: | |
775 | case O_logical_and: | |
776 | case O_logical_or: | |
16a419ba NC |
777 | return (exp1->X_add_symbol == exp2->X_add_symbol) |
778 | && (exp1->X_op_symbol == exp2->X_op_symbol) | |
779 | && (exp1->X_add_number == exp2->X_add_number); | |
07855bec | 780 | default: |
98d3f06f KH |
781 | return 0; |
782 | } | |
a85d7ed0 NC |
783 | } |
784 | ||
785 | /* Test for @lit and if its present make an entry in the literal pool and | |
786 | modify the current expression to be an offset into the literal pool. */ | |
787 | static elf_suffix_type | |
788 | s390_lit_suffix (str_p, exp_p, suffix) | |
789 | char **str_p; | |
790 | expressionS *exp_p; | |
791 | elf_suffix_type suffix; | |
792 | { | |
793 | bfd_reloc_code_real_type reloc; | |
794 | char tmp_name[64]; | |
795 | char *str = *str_p; | |
796 | char *ident; | |
797 | struct s390_lpe *lpe; | |
798 | int nbytes, len; | |
799 | ||
800 | if (*str++ != ':') | |
801 | return suffix; /* No modification. */ | |
198ce79b | 802 | |
a85d7ed0 NC |
803 | /* We look for a suffix of the form "@lit1", "@lit2", "@lit4" or "@lit8". */ |
804 | ident = str; | |
3882b010 | 805 | while (ISALNUM (*str)) |
a85d7ed0 NC |
806 | str++; |
807 | len = str - ident; | |
16a419ba NC |
808 | if (len != 4 || strncasecmp (ident, "lit", 3) != 0 |
809 | || (ident[3]!='1' && ident[3]!='2' && ident[3]!='4' && ident[3]!='8')) | |
a85d7ed0 NC |
810 | return suffix; /* no modification */ |
811 | nbytes = ident[3] - '0'; | |
812 | ||
813 | reloc = BFD_RELOC_UNUSED; | |
07855bec NC |
814 | if (suffix == ELF_SUFFIX_GOT) |
815 | { | |
816 | if (nbytes == 2) | |
817 | reloc = BFD_RELOC_390_GOT16; | |
818 | else if (nbytes == 4) | |
819 | reloc = BFD_RELOC_32_GOT_PCREL; | |
820 | else if (nbytes == 8) | |
821 | reloc = BFD_RELOC_390_GOT64; | |
822 | } | |
823 | else if (suffix == ELF_SUFFIX_PLT) | |
824 | { | |
825 | if (nbytes == 4) | |
826 | reloc = BFD_RELOC_390_PLT32; | |
827 | else if (nbytes == 8) | |
828 | reloc = BFD_RELOC_390_PLT64; | |
829 | } | |
a85d7ed0 | 830 | |
07855bec | 831 | if (suffix != ELF_SUFFIX_NONE && reloc == BFD_RELOC_UNUSED) |
a85d7ed0 | 832 | as_bad (_("Invalid suffix for literal pool entry")); |
a85d7ed0 NC |
833 | |
834 | /* Search the pool if the new entry is a duplicate. */ | |
07855bec NC |
835 | if (exp_p->X_op == O_big) |
836 | { | |
837 | /* Special processing for big numbers. */ | |
838 | for (lpe = lpe_list; lpe != NULL; lpe = lpe->next) | |
839 | { | |
840 | if (lpe->ex.X_op == O_big) | |
841 | { | |
842 | if (exp_p->X_add_number <= 0 && lpe->ex.X_add_number <= 0) | |
843 | { | |
844 | if (memcmp (&generic_floating_point_number, &lpe->floatnum, | |
845 | sizeof (FLONUM_TYPE)) == 0) | |
846 | break; | |
847 | } | |
848 | else if (exp_p->X_add_number == lpe->ex.X_add_number) | |
849 | { | |
850 | if (memcmp (generic_bignum, lpe->bignum, | |
851 | sizeof (LITTLENUM_TYPE)*exp_p->X_add_number) == 0) | |
852 | break; | |
853 | } | |
854 | } | |
855 | } | |
a85d7ed0 | 856 | } |
07855bec NC |
857 | else |
858 | { | |
859 | /* Processing for 'normal' data types. */ | |
860 | for (lpe = lpe_list; lpe != NULL; lpe = lpe->next) | |
16a419ba | 861 | if (lpe->nbytes == nbytes && lpe->reloc == reloc |
98d3f06f | 862 | && s390_exp_compare (exp_p, &lpe->ex) != 0) |
07855bec | 863 | break; |
a85d7ed0 | 864 | } |
07855bec NC |
865 | |
866 | if (lpe == NULL) | |
867 | { | |
868 | /* A new literal. */ | |
869 | if (lpe_free_list != NULL) | |
870 | { | |
871 | lpe = lpe_free_list; | |
872 | lpe_free_list = lpe_free_list->next; | |
873 | } | |
a85d7ed0 | 874 | else |
07855bec | 875 | { |
98d3f06f | 876 | lpe = (struct s390_lpe *) xmalloc (sizeof (struct s390_lpe)); |
07855bec NC |
877 | } |
878 | ||
879 | lpe->ex = *exp_p; | |
880 | ||
881 | if (exp_p->X_op == O_big) | |
882 | { | |
883 | if (exp_p->X_add_number <= 0) | |
884 | lpe->floatnum = generic_floating_point_number; | |
885 | else if (exp_p->X_add_number <= 4) | |
886 | memcpy (lpe->bignum, generic_bignum, | |
98d3f06f | 887 | exp_p->X_add_number * sizeof (LITTLENUM_TYPE)); |
07855bec NC |
888 | else |
889 | as_bad (_("Big number is too big")); | |
890 | } | |
891 | ||
892 | lpe->nbytes = nbytes; | |
893 | lpe->reloc = reloc; | |
894 | /* Literal pool name defined ? */ | |
895 | if (lp_sym == NULL) | |
896 | { | |
07726851 | 897 | sprintf (tmp_name, ".L\001%i", lp_count); |
98d3f06f | 898 | lp_sym = symbol_make (tmp_name); |
07855bec | 899 | } |
a85d7ed0 | 900 | |
07855bec | 901 | /* Make name for literal pool entry. */ |
07726851 | 902 | sprintf (tmp_name, ".L\001%i\002%i", lp_count, lpe_count); |
07855bec | 903 | lpe_count++; |
98d3f06f | 904 | lpe->sym = symbol_make (tmp_name); |
07855bec NC |
905 | |
906 | /* Add to literal pool list. */ | |
907 | lpe->next = NULL; | |
908 | if (lpe_list_tail != NULL) | |
909 | { | |
910 | lpe_list_tail->next = lpe; | |
911 | lpe_list_tail = lpe; | |
912 | } | |
913 | else | |
914 | lpe_list = lpe_list_tail = lpe; | |
915 | } | |
198ce79b | 916 | |
a85d7ed0 NC |
917 | /* Now change exp_p to the offset into the literal pool. |
918 | Thats the expression: .L^Ax^By-.L^Ax */ | |
919 | exp_p->X_add_symbol = lpe->sym; | |
920 | exp_p->X_op_symbol = lp_sym; | |
921 | exp_p->X_op = O_subtract; | |
922 | exp_p->X_add_number = 0; | |
923 | ||
924 | *str_p = str; | |
925 | ||
926 | /* We change the suffix type to ELF_SUFFIX_NONE, because | |
927 | the difference of two local labels is just a number. */ | |
928 | return ELF_SUFFIX_NONE; | |
929 | } | |
930 | ||
931 | /* Like normal .long/.short/.word, except support @got, etc. | |
932 | clobbers input_line_pointer, checks end-of-line. */ | |
933 | static void | |
934 | s390_elf_cons (nbytes) | |
935 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ | |
936 | { | |
937 | expressionS exp; | |
938 | elf_suffix_type suffix; | |
939 | ||
07855bec NC |
940 | if (is_it_end_of_statement ()) |
941 | { | |
942 | demand_empty_rest_of_line (); | |
943 | return; | |
944 | } | |
a85d7ed0 | 945 | |
07855bec NC |
946 | do |
947 | { | |
948 | expression (&exp); | |
949 | ||
950 | if (exp.X_op == O_symbol | |
951 | && *input_line_pointer == '@' | |
952 | && (suffix = s390_elf_suffix (&input_line_pointer, &exp)) != ELF_SUFFIX_NONE) | |
953 | { | |
954 | bfd_reloc_code_real_type reloc; | |
955 | reloc_howto_type *reloc_howto; | |
956 | int size; | |
957 | char *where; | |
958 | ||
959 | if (nbytes == 2 && suffix == ELF_SUFFIX_GOT) | |
960 | reloc = BFD_RELOC_390_GOT16; | |
961 | else if (nbytes == 4 && suffix == ELF_SUFFIX_GOT) | |
962 | reloc = BFD_RELOC_32_GOT_PCREL; | |
963 | else if (nbytes == 8 && suffix == ELF_SUFFIX_GOT) | |
964 | reloc = BFD_RELOC_390_GOT64; | |
2a19f73f MS |
965 | else if (nbytes == 2 && suffix == ELF_SUFFIX_GOTOFF) |
966 | reloc = BFD_RELOC_16_GOTOFF; | |
967 | else if (nbytes == 4 && suffix == ELF_SUFFIX_GOTOFF) | |
968 | reloc = BFD_RELOC_32_GOTOFF; | |
969 | else if (nbytes == 8 && suffix == ELF_SUFFIX_GOTOFF) | |
970 | reloc = BFD_RELOC_390_GOTOFF64; | |
971 | else if (nbytes == 2 && suffix == ELF_SUFFIX_PLTOFF) | |
972 | reloc = BFD_RELOC_390_PLTOFF16; | |
973 | else if (nbytes == 4 && suffix == ELF_SUFFIX_PLTOFF) | |
974 | reloc = BFD_RELOC_390_PLTOFF32; | |
975 | else if (nbytes == 8 && suffix == ELF_SUFFIX_PLTOFF) | |
976 | reloc = BFD_RELOC_390_PLTOFF64; | |
07855bec NC |
977 | else if (nbytes == 4 && suffix == ELF_SUFFIX_PLT) |
978 | reloc = BFD_RELOC_390_PLT32; | |
979 | else if (nbytes == 8 && suffix == ELF_SUFFIX_PLT) | |
980 | reloc = BFD_RELOC_390_PLT64; | |
2a19f73f MS |
981 | else if (nbytes == 4 && suffix == ELF_SUFFIX_GOTPLT) |
982 | reloc = BFD_RELOC_390_GOTPLT32; | |
983 | else if (nbytes == 8 && suffix == ELF_SUFFIX_GOTPLT) | |
984 | reloc = BFD_RELOC_390_GOTPLT64; | |
07855bec NC |
985 | else |
986 | reloc = BFD_RELOC_UNUSED; | |
987 | ||
988 | if (reloc != BFD_RELOC_UNUSED) | |
989 | { | |
990 | reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc); | |
991 | size = bfd_get_reloc_size (reloc_howto); | |
992 | if (size > nbytes) | |
993 | as_bad (_("%s relocations do not fit in %d bytes"), | |
994 | reloc_howto->name, nbytes); | |
07726851 | 995 | where = frag_more (nbytes); |
07855bec | 996 | md_number_to_chars (where, 0, size); |
198ce79b | 997 | /* To make fixup_segment do the pc relative conversion the |
b34976b6 | 998 | pcrel parameter on the fix_new_exp call needs to be FALSE. */ |
198ce79b | 999 | fix_new_exp (frag_now, where - frag_now->fr_literal, |
b34976b6 | 1000 | size, &exp, FALSE, reloc); |
07855bec NC |
1001 | } |
1002 | else | |
1003 | as_bad (_("relocation not applicable")); | |
1004 | } | |
a85d7ed0 | 1005 | else |
07855bec NC |
1006 | emit_expr (&exp, (unsigned int) nbytes); |
1007 | } | |
1008 | while (*input_line_pointer++ == ','); | |
a85d7ed0 | 1009 | |
98d3f06f | 1010 | input_line_pointer--; /* Put terminator back into stream. */ |
a85d7ed0 NC |
1011 | demand_empty_rest_of_line (); |
1012 | } | |
1013 | ||
1014 | /* We need to keep a list of fixups. We can't simply generate them as | |
1015 | we go, because that would require us to first create the frag, and | |
1016 | that would screw up references to ``.''. */ | |
1017 | ||
1018 | struct s390_fixup | |
07855bec NC |
1019 | { |
1020 | expressionS exp; | |
1021 | int opindex; | |
1022 | bfd_reloc_code_real_type reloc; | |
1023 | }; | |
a85d7ed0 NC |
1024 | |
1025 | #define MAX_INSN_FIXUPS (4) | |
1026 | ||
1027 | /* This routine is called for each instruction to be assembled. */ | |
1028 | ||
9d654c1c | 1029 | static char * |
a85d7ed0 NC |
1030 | md_gather_operands (str, insn, opcode) |
1031 | char *str; | |
1032 | unsigned char *insn; | |
1033 | const struct s390_opcode *opcode; | |
1034 | { | |
1035 | struct s390_fixup fixups[MAX_INSN_FIXUPS]; | |
1036 | const struct s390_operand *operand; | |
1037 | const unsigned char *opindex_ptr; | |
1038 | elf_suffix_type suffix; | |
1039 | bfd_reloc_code_real_type reloc; | |
1040 | int skip_optional; | |
1041 | int parentheses; | |
1042 | char *f; | |
1043 | int fc, i; | |
1044 | ||
98d3f06f KH |
1045 | while (ISSPACE (*str)) |
1046 | str++; | |
a85d7ed0 NC |
1047 | |
1048 | parentheses = 0; | |
1049 | skip_optional = 0; | |
1050 | ||
1051 | /* Gather the operands. */ | |
1052 | fc = 0; | |
07855bec NC |
1053 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) |
1054 | { | |
1055 | expressionS ex; | |
1056 | char *hold; | |
1057 | ||
1058 | operand = s390_operands + *opindex_ptr; | |
198ce79b | 1059 | |
07855bec NC |
1060 | if (skip_optional && (operand->flags & S390_OPERAND_INDEX)) |
1061 | { | |
1062 | /* We do an early skip. For D(X,B) constructions the index | |
198ce79b | 1063 | register is skipped (X is optional). For D(L,B) the base |
07855bec NC |
1064 | register will be the skipped operand, because L is NOT |
1065 | optional. */ | |
1066 | skip_optional = 0; | |
1067 | continue; | |
1068 | } | |
198ce79b | 1069 | |
07855bec NC |
1070 | /* Gather the operand. */ |
1071 | hold = input_line_pointer; | |
1072 | input_line_pointer = str; | |
1073 | ||
98d3f06f KH |
1074 | /* Parse the operand. */ |
1075 | if (! register_name (&ex)) | |
07855bec | 1076 | expression (&ex); |
198ce79b | 1077 | |
07855bec NC |
1078 | str = input_line_pointer; |
1079 | input_line_pointer = hold; | |
198ce79b | 1080 | |
07855bec NC |
1081 | /* Write the operand to the insn. */ |
1082 | if (ex.X_op == O_illegal) | |
1083 | as_bad (_("illegal operand")); | |
1084 | else if (ex.X_op == O_absent) | |
1085 | as_bad (_("missing operand")); | |
1086 | else if (ex.X_op == O_register || ex.X_op == O_constant) | |
1087 | { | |
1088 | s390_lit_suffix (&str, &ex, ELF_SUFFIX_NONE); | |
1089 | ||
1090 | if (ex.X_op != O_register && ex.X_op != O_constant) | |
1091 | { | |
1092 | /* We need to generate a fixup for the | |
1093 | expression returned by s390_lit_suffix. */ | |
1094 | if (fc >= MAX_INSN_FIXUPS) | |
1095 | as_fatal (_("too many fixups")); | |
1096 | fixups[fc].exp = ex; | |
1097 | fixups[fc].opindex = *opindex_ptr; | |
1098 | fixups[fc].reloc = BFD_RELOC_UNUSED; | |
1099 | ++fc; | |
1100 | } | |
1101 | else | |
1102 | { | |
16a419ba NC |
1103 | if ((operand->flags & S390_OPERAND_INDEX) |
1104 | && ex.X_add_number == 0 | |
b34976b6 | 1105 | && warn_areg_zero) |
07726851 | 1106 | as_warn ("index register specified but zero"); |
16a419ba NC |
1107 | if ((operand->flags & S390_OPERAND_BASE) |
1108 | && ex.X_add_number == 0 | |
b34976b6 | 1109 | && warn_areg_zero) |
07726851 | 1110 | as_warn ("base register specified but zero"); |
07855bec NC |
1111 | s390_insert_operand (insn, operand, ex.X_add_number, NULL, 0); |
1112 | } | |
1113 | } | |
1114 | else | |
1115 | { | |
1116 | suffix = s390_elf_suffix (&str, &ex); | |
1117 | suffix = s390_lit_suffix (&str, &ex, suffix); | |
1118 | reloc = BFD_RELOC_UNUSED; | |
1119 | ||
1120 | if (suffix == ELF_SUFFIX_GOT) | |
1121 | { | |
1122 | if (operand->flags & S390_OPERAND_DISP) | |
1123 | reloc = BFD_RELOC_390_GOT12; | |
16a419ba NC |
1124 | else if ((operand->flags & S390_OPERAND_SIGNED) |
1125 | && (operand->bits == 16)) | |
07855bec | 1126 | reloc = BFD_RELOC_390_GOT16; |
16a419ba NC |
1127 | else if ((operand->flags & S390_OPERAND_PCREL) |
1128 | && (operand->bits == 32)) | |
07855bec NC |
1129 | reloc = BFD_RELOC_390_GOTENT; |
1130 | } | |
1131 | else if (suffix == ELF_SUFFIX_PLT) | |
1132 | { | |
16a419ba NC |
1133 | if ((operand->flags & S390_OPERAND_PCREL) |
1134 | && (operand->bits == 16)) | |
07855bec | 1135 | reloc = BFD_RELOC_390_PLT16DBL; |
16a419ba NC |
1136 | else if ((operand->flags & S390_OPERAND_PCREL) |
1137 | && (operand->bits == 32)) | |
07855bec NC |
1138 | reloc = BFD_RELOC_390_PLT32DBL; |
1139 | } | |
1140 | else if (suffix == ELF_SUFFIX_GOTENT) | |
1141 | { | |
16a419ba NC |
1142 | if ((operand->flags & S390_OPERAND_PCREL) |
1143 | && (operand->bits == 32)) | |
07855bec NC |
1144 | reloc = BFD_RELOC_390_GOTENT; |
1145 | } | |
2a19f73f MS |
1146 | else if (suffix == ELF_SUFFIX_GOTOFF) |
1147 | { | |
1148 | if ((operand->flags & S390_OPERAND_SIGNED) | |
1149 | && (operand->bits == 16)) | |
1150 | reloc = BFD_RELOC_16_GOTOFF; | |
1151 | } | |
1152 | else if (suffix == ELF_SUFFIX_PLTOFF) | |
1153 | { | |
1154 | if ((operand->flags & S390_OPERAND_SIGNED) | |
1155 | && (operand->bits == 16)) | |
1156 | reloc = BFD_RELOC_390_PLTOFF16; | |
1157 | } | |
1158 | else if (suffix == ELF_SUFFIX_GOTPLT) | |
1159 | { | |
1160 | if ((operand->flags & S390_OPERAND_DISP) | |
1161 | && (operand->bits == 12)) | |
1162 | reloc = BFD_RELOC_390_GOTPLT12; | |
1163 | else if ((operand->flags & S390_OPERAND_SIGNED) | |
1164 | && (operand->bits == 16)) | |
1165 | reloc = BFD_RELOC_390_GOTPLT16; | |
1166 | else if ((operand->flags & S390_OPERAND_PCREL) | |
1167 | && (operand->bits == 32)) | |
1168 | reloc = BFD_RELOC_390_GOTPLTENT; | |
1169 | } | |
07855bec NC |
1170 | |
1171 | if (suffix != ELF_SUFFIX_NONE && reloc == BFD_RELOC_UNUSED) | |
1172 | as_bad (_("invalid operand suffix")); | |
1173 | /* We need to generate a fixup of type 'reloc' for this | |
1174 | expression. */ | |
a85d7ed0 NC |
1175 | if (fc >= MAX_INSN_FIXUPS) |
1176 | as_fatal (_("too many fixups")); | |
1177 | fixups[fc].exp = ex; | |
1178 | fixups[fc].opindex = *opindex_ptr; | |
07855bec | 1179 | fixups[fc].reloc = reloc; |
a85d7ed0 | 1180 | ++fc; |
07855bec | 1181 | } |
198ce79b | 1182 | |
07855bec NC |
1183 | /* Check the next character. The call to expression has advanced |
1184 | str past any whitespace. */ | |
1185 | if (operand->flags & S390_OPERAND_DISP) | |
1186 | { | |
1187 | /* After a displacement a block in parentheses can start. */ | |
1188 | if (*str != '(') | |
1189 | { | |
1190 | /* Check if parethesed block can be skipped. If the next | |
1191 | operand is neiter an optional operand nor a base register | |
1192 | then we have a syntax error. */ | |
1193 | operand = s390_operands + *(++opindex_ptr); | |
1194 | if (!(operand->flags & (S390_OPERAND_INDEX|S390_OPERAND_BASE))) | |
1195 | as_bad (_("syntax error; missing '(' after displacement")); | |
1196 | ||
1197 | /* Ok, skip all operands until S390_OPERAND_BASE. */ | |
1198 | while (!(operand->flags & S390_OPERAND_BASE)) | |
1199 | operand = s390_operands + *(++opindex_ptr); | |
198ce79b | 1200 | |
07855bec NC |
1201 | /* If there is a next operand it must be seperated by a comma. */ |
1202 | if (opindex_ptr[1] != '\0') | |
1203 | { | |
1204 | if (*str++ != ',') | |
07726851 | 1205 | as_bad (_("syntax error; expected ,")); |
07855bec NC |
1206 | } |
1207 | } | |
1208 | else | |
1209 | { | |
1210 | /* We found an opening parentheses. */ | |
1211 | str++; | |
1212 | for (f = str; *f != '\0'; f++) | |
1213 | if (*f == ',' || *f == ')') | |
1214 | break; | |
1215 | /* If there is no comma until the closing parentheses OR | |
1216 | there is a comma right after the opening parentheses, | |
1217 | we have to skip optional operands. */ | |
1218 | if (*f == ',' && f == str) | |
1219 | { | |
1220 | /* comma directly after '(' ? */ | |
1221 | skip_optional = 1; | |
1222 | str++; | |
1223 | } | |
1224 | else | |
1225 | skip_optional = (*f != ','); | |
1226 | } | |
1227 | } | |
1228 | else if (operand->flags & S390_OPERAND_BASE) | |
1229 | { | |
1230 | /* After the base register the parenthesed block ends. */ | |
1231 | if (*str++ != ')') | |
1232 | as_bad (_("syntax error; missing ')' after base register")); | |
1233 | skip_optional = 0; | |
1234 | /* If there is a next operand it must be seperated by a comma. */ | |
1235 | if (opindex_ptr[1] != '\0') | |
1236 | { | |
1237 | if (*str++ != ',') | |
1238 | as_bad (_("syntax error; expected ,")); | |
1239 | } | |
1240 | } | |
1241 | else | |
1242 | { | |
1243 | /* We can find an 'early' closing parentheses in e.g. D(L) instead | |
1244 | of D(L,B). In this case the base register has to be skipped. */ | |
1245 | if (*str == ')') | |
1246 | { | |
1247 | operand = s390_operands + *(++opindex_ptr); | |
1248 | ||
1249 | if (!(operand->flags & S390_OPERAND_BASE)) | |
1250 | as_bad (_("syntax error; ')' not allowed here")); | |
1251 | str++; | |
1252 | } | |
1253 | /* If there is a next operand it must be seperated by a comma. */ | |
1254 | if (opindex_ptr[1] != '\0') | |
1255 | { | |
1256 | if (*str++ != ',') | |
07726851 | 1257 | as_bad (_("syntax error; expected ,")); |
07855bec | 1258 | } |
a85d7ed0 | 1259 | } |
a85d7ed0 | 1260 | } |
a85d7ed0 | 1261 | |
3882b010 | 1262 | while (ISSPACE (*str)) |
a85d7ed0 NC |
1263 | ++str; |
1264 | ||
07855bec NC |
1265 | if (*str != '\0') |
1266 | { | |
1267 | char *linefeed; | |
a85d7ed0 | 1268 | |
07726851 | 1269 | if ((linefeed = strchr (str, '\n')) != NULL) |
07855bec NC |
1270 | *linefeed = '\0'; |
1271 | as_bad (_("junk at end of line: `%s'"), str); | |
1272 | if (linefeed != NULL) | |
1273 | *linefeed = '\n'; | |
1274 | } | |
a85d7ed0 NC |
1275 | |
1276 | /* Write out the instruction. */ | |
1277 | f = frag_more (opcode->oplen); | |
07855bec | 1278 | memcpy (f, insn, opcode->oplen); |
8f5b2891 | 1279 | dwarf2_emit_insn (opcode->oplen); |
a85d7ed0 NC |
1280 | |
1281 | /* Create any fixups. At this point we do not use a | |
1282 | bfd_reloc_code_real_type, but instead just use the | |
1283 | BFD_RELOC_UNUSED plus the operand index. This lets us easily | |
1284 | handle fixups for any operand type, although that is admittedly | |
1285 | not a very exciting feature. We pick a BFD reloc type in | |
1286 | md_apply_fix3. */ | |
07855bec NC |
1287 | for (i = 0; i < fc; i++) |
1288 | { | |
1289 | operand = s390_operands + fixups[i].opindex; | |
a85d7ed0 | 1290 | |
07855bec NC |
1291 | if (fixups[i].reloc != BFD_RELOC_UNUSED) |
1292 | { | |
1293 | reloc_howto_type *reloc_howto; | |
1294 | fixS *fixP; | |
1295 | int size; | |
198ce79b | 1296 | |
07855bec NC |
1297 | reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); |
1298 | if (!reloc_howto) | |
1299 | abort (); | |
198ce79b | 1300 | |
07855bec NC |
1301 | size = bfd_get_reloc_size (reloc_howto); |
1302 | ||
1303 | if (size < 1 || size > 4) | |
1304 | abort (); | |
198ce79b AJ |
1305 | |
1306 | fixP = fix_new_exp (frag_now, | |
1307 | f - frag_now->fr_literal + (operand->shift/8), | |
07855bec NC |
1308 | size, &fixups[i].exp, reloc_howto->pc_relative, |
1309 | fixups[i].reloc); | |
1310 | /* Turn off overflow checking in fixup_segment. This is necessary | |
1311 | because fixup_segment will signal an overflow for large 4 byte | |
1312 | quantities for GOT12 relocations. */ | |
16a419ba NC |
1313 | if ( fixups[i].reloc == BFD_RELOC_390_GOT12 |
1314 | || fixups[i].reloc == BFD_RELOC_390_GOT16) | |
07855bec NC |
1315 | fixP->fx_no_overflow = 1; |
1316 | } | |
1317 | else | |
1318 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, &fixups[i].exp, | |
1319 | (operand->flags & S390_OPERAND_PCREL) != 0, | |
1320 | ((bfd_reloc_code_real_type) | |
1321 | (fixups[i].opindex + (int) BFD_RELOC_UNUSED))); | |
1322 | } | |
a85d7ed0 NC |
1323 | return str; |
1324 | } | |
1325 | ||
1326 | /* This routine is called for each instruction to be assembled. */ | |
1327 | ||
1328 | void | |
1329 | md_assemble (str) | |
1330 | char *str; | |
1331 | { | |
1332 | const struct s390_opcode *opcode; | |
1333 | unsigned char insn[6]; | |
1334 | char *s; | |
1335 | ||
1336 | /* Get the opcode. */ | |
3882b010 | 1337 | for (s = str; *s != '\0' && ! ISSPACE (*s); s++) |
a85d7ed0 NC |
1338 | ; |
1339 | if (*s != '\0') | |
1340 | *s++ = '\0'; | |
1341 | ||
1342 | /* Look up the opcode in the hash table. */ | |
1343 | opcode = (struct s390_opcode *) hash_find (s390_opcode_hash, str); | |
07855bec NC |
1344 | if (opcode == (const struct s390_opcode *) NULL) |
1345 | { | |
1346 | as_bad (_("Unrecognized opcode: `%s'"), str); | |
1347 | return; | |
1348 | } | |
1349 | else if (!(opcode->architecture & current_arch_mask)) | |
1350 | { | |
07726851 | 1351 | as_bad ("Opcode %s not available in this architecture", str); |
07855bec NC |
1352 | return; |
1353 | } | |
a85d7ed0 | 1354 | |
07726851 | 1355 | memcpy (insn, opcode->opcode, sizeof (insn)); |
07855bec | 1356 | md_gather_operands (s, insn, opcode); |
a85d7ed0 NC |
1357 | } |
1358 | ||
1359 | #ifndef WORKING_DOT_WORD | |
1360 | /* Handle long and short jumps. We don't support these */ | |
1361 | void | |
1362 | md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
1363 | char *ptr; | |
1364 | addressT from_addr, to_addr; | |
1365 | fragS *frag; | |
1366 | symbolS *to_symbol; | |
1367 | { | |
1368 | abort (); | |
1369 | } | |
1370 | ||
1371 | void | |
1372 | md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
1373 | char *ptr; | |
1374 | addressT from_addr, to_addr; | |
1375 | fragS *frag; | |
1376 | symbolS *to_symbol; | |
1377 | { | |
1378 | abort (); | |
1379 | } | |
1380 | #endif | |
1381 | ||
1382 | void | |
1383 | s390_bss (ignore) | |
1384 | int ignore ATTRIBUTE_UNUSED; | |
1385 | { | |
1386 | /* We don't support putting frags in the BSS segment, we fake it | |
1387 | by marking in_bss, then looking at s_skip for clues. */ | |
1388 | ||
1389 | subseg_set (bss_section, 0); | |
1390 | demand_empty_rest_of_line (); | |
1391 | } | |
1392 | ||
1393 | /* Pseudo-op handling. */ | |
1394 | ||
1395 | void | |
07726851 | 1396 | s390_insn (ignore) |
a85d7ed0 NC |
1397 | int ignore ATTRIBUTE_UNUSED; |
1398 | { | |
1399 | expressionS exp; | |
1400 | const struct s390_opcode *opformat; | |
1401 | unsigned char insn[6]; | |
1402 | char *s; | |
1403 | ||
1404 | /* Get the opcode format. */ | |
1405 | s = input_line_pointer; | |
3882b010 | 1406 | while (*s != '\0' && *s != ',' && ! ISSPACE (*s)) |
a85d7ed0 NC |
1407 | s++; |
1408 | if (*s != ',') | |
1409 | as_bad (_("Invalid .insn format\n")); | |
1410 | *s++ = '\0'; | |
1411 | ||
1412 | /* Look up the opcode in the hash table. */ | |
1413 | opformat = (struct s390_opcode *) | |
1414 | hash_find (s390_opformat_hash, input_line_pointer); | |
07855bec NC |
1415 | if (opformat == (const struct s390_opcode *) NULL) |
1416 | { | |
1417 | as_bad (_("Unrecognized opcode format: `%s'"), input_line_pointer); | |
1418 | return; | |
1419 | } | |
a85d7ed0 NC |
1420 | input_line_pointer = s; |
1421 | expression (&exp); | |
07855bec NC |
1422 | if (exp.X_op == O_constant) |
1423 | { | |
a161fe53 AM |
1424 | if ( (opformat->oplen == 6 && exp.X_op > 0 && exp.X_op < (1ULL << 48)) |
1425 | || (opformat->oplen == 4 && exp.X_op > 0 && exp.X_op < (1ULL << 32)) | |
1426 | || (opformat->oplen == 2 && exp.X_op > 0 && exp.X_op < (1ULL << 16))) | |
07855bec NC |
1427 | md_number_to_chars (insn, exp.X_add_number, opformat->oplen); |
1428 | else | |
07726851 | 1429 | as_bad (_("Invalid .insn format\n")); |
07855bec NC |
1430 | } |
1431 | else if (exp.X_op == O_big) | |
1432 | { | |
16a419ba NC |
1433 | if (exp.X_add_number > 0 |
1434 | && opformat->oplen == 6 | |
1435 | && generic_bignum[3] == 0) | |
07855bec NC |
1436 | { |
1437 | md_number_to_chars (insn, generic_bignum[2], 2); | |
1438 | md_number_to_chars (&insn[2], generic_bignum[1], 2); | |
1439 | md_number_to_chars (&insn[4], generic_bignum[0], 2); | |
1440 | } | |
1441 | else | |
07726851 | 1442 | as_bad (_("Invalid .insn format\n")); |
07855bec NC |
1443 | } |
1444 | else | |
a85d7ed0 | 1445 | as_bad (_("second operand of .insn not a constant\n")); |
a85d7ed0 | 1446 | |
b6849f55 NC |
1447 | if (strcmp (opformat->name, "e") != 0 && *input_line_pointer++ != ',') |
1448 | as_bad (_("missing comma after insn constant\n")); | |
98d3f06f | 1449 | |
07726851 | 1450 | if ((s = strchr (input_line_pointer, '\n')) != NULL) |
a85d7ed0 | 1451 | *s = '\0'; |
b6849f55 NC |
1452 | input_line_pointer = md_gather_operands (input_line_pointer, insn, |
1453 | opformat); | |
a85d7ed0 NC |
1454 | if (s != NULL) |
1455 | *s = '\n'; | |
1456 | demand_empty_rest_of_line (); | |
1457 | } | |
1458 | ||
1459 | /* The .byte pseudo-op. This is similar to the normal .byte | |
1460 | pseudo-op, but it can also take a single ASCII string. */ | |
1461 | ||
1462 | static void | |
1463 | s390_byte (ignore) | |
1464 | int ignore ATTRIBUTE_UNUSED; | |
1465 | { | |
1466 | if (*input_line_pointer != '\"') | |
1467 | { | |
1468 | cons (1); | |
1469 | return; | |
1470 | } | |
1471 | ||
1472 | /* Gather characters. A real double quote is doubled. Unusual | |
1473 | characters are not permitted. */ | |
1474 | ++input_line_pointer; | |
1475 | while (1) | |
1476 | { | |
1477 | char c; | |
1478 | ||
1479 | c = *input_line_pointer++; | |
1480 | ||
1481 | if (c == '\"') | |
1482 | { | |
1483 | if (*input_line_pointer != '\"') | |
1484 | break; | |
1485 | ++input_line_pointer; | |
1486 | } | |
1487 | ||
1488 | FRAG_APPEND_1_CHAR (c); | |
1489 | } | |
1490 | ||
1491 | demand_empty_rest_of_line (); | |
1492 | } | |
1493 | ||
1494 | /* The .ltorg pseudo-op.This emits all literals defined since the last | |
198ce79b | 1495 | .ltorg or the invocation of gas. Literals are defined with the |
a85d7ed0 NC |
1496 | @lit suffix. */ |
1497 | ||
1498 | static void | |
1499 | s390_literals (ignore) | |
1500 | int ignore ATTRIBUTE_UNUSED; | |
1501 | { | |
1502 | struct s390_lpe *lpe; | |
1503 | ||
1504 | if (lp_sym == NULL || lpe_count == 0) | |
98d3f06f | 1505 | return; /* Nothing to be done. */ |
a85d7ed0 NC |
1506 | |
1507 | /* Emit symbol for start of literal pool. */ | |
1508 | S_SET_SEGMENT (lp_sym, now_seg); | |
1509 | S_SET_VALUE (lp_sym, (valueT) frag_now_fix ()); | |
1510 | lp_sym->sy_frag = frag_now; | |
1511 | ||
07855bec NC |
1512 | while (lpe_list) |
1513 | { | |
1514 | lpe = lpe_list; | |
1515 | lpe_list = lpe_list->next; | |
1516 | S_SET_SEGMENT (lpe->sym, now_seg); | |
1517 | S_SET_VALUE (lpe->sym, (valueT) frag_now_fix ()); | |
1518 | lpe->sym->sy_frag = frag_now; | |
1519 | ||
1520 | /* Emit literal pool entry. */ | |
1521 | if (lpe->reloc != BFD_RELOC_UNUSED) | |
1522 | { | |
198ce79b | 1523 | reloc_howto_type *reloc_howto = |
07855bec NC |
1524 | bfd_reloc_type_lookup (stdoutput, lpe->reloc); |
1525 | int size = bfd_get_reloc_size (reloc_howto); | |
1526 | char *where; | |
1527 | ||
1528 | if (size > lpe->nbytes) | |
1529 | as_bad (_("%s relocations do not fit in %d bytes"), | |
1530 | reloc_howto->name, lpe->nbytes); | |
07726851 | 1531 | where = frag_more (lpe->nbytes); |
07855bec NC |
1532 | md_number_to_chars (where, 0, size); |
1533 | fix_new_exp (frag_now, where - frag_now->fr_literal, | |
1534 | size, &lpe->ex, reloc_howto->pc_relative, lpe->reloc); | |
1535 | } | |
1536 | else | |
1537 | { | |
1538 | if (lpe->ex.X_op == O_big) | |
1539 | { | |
1540 | if (lpe->ex.X_add_number <= 0) | |
1541 | generic_floating_point_number = lpe->floatnum; | |
1542 | else | |
1543 | memcpy (generic_bignum, lpe->bignum, | |
98d3f06f | 1544 | lpe->ex.X_add_number * sizeof (LITTLENUM_TYPE)); |
07855bec NC |
1545 | } |
1546 | emit_expr (&lpe->ex, lpe->nbytes); | |
1547 | } | |
a85d7ed0 | 1548 | |
07855bec NC |
1549 | lpe->next = lpe_free_list; |
1550 | lpe_free_list = lpe; | |
1551 | } | |
a85d7ed0 NC |
1552 | lpe_list_tail = NULL; |
1553 | lp_sym = NULL; | |
1554 | lp_count++; | |
1555 | lpe_count = 0; | |
1556 | } | |
1557 | ||
1558 | /* Turn a string in input_line_pointer into a floating point constant | |
1559 | of type type, and store the appropriate bytes in *litp. The number | |
1560 | of LITTLENUMS emitted is stored in *sizep . An error message is | |
1561 | returned, or NULL on OK. */ | |
1562 | ||
1563 | char * | |
1564 | md_atof (type, litp, sizep) | |
1565 | int type; | |
1566 | char *litp; | |
1567 | int *sizep; | |
1568 | { | |
1569 | int prec; | |
1570 | LITTLENUM_TYPE words[4]; | |
1571 | char *t; | |
1572 | int i; | |
1573 | ||
1574 | switch (type) | |
1575 | { | |
1576 | case 'f': | |
1577 | prec = 2; | |
1578 | break; | |
1579 | ||
1580 | case 'd': | |
1581 | prec = 4; | |
1582 | break; | |
1583 | ||
1584 | default: | |
1585 | *sizep = 0; | |
1586 | return "bad call to md_atof"; | |
1587 | } | |
1588 | ||
1589 | t = atof_ieee (input_line_pointer, type, words); | |
1590 | if (t) | |
1591 | input_line_pointer = t; | |
1592 | ||
1593 | *sizep = prec * 2; | |
1594 | ||
1595 | for (i = 0; i < prec; i++) | |
1596 | { | |
1597 | md_number_to_chars (litp, (valueT) words[i], 2); | |
1598 | litp += 2; | |
1599 | } | |
198ce79b | 1600 | |
a85d7ed0 NC |
1601 | return NULL; |
1602 | } | |
1603 | ||
1604 | /* Align a section (I don't know why this is machine dependent). */ | |
1605 | ||
1606 | valueT | |
1607 | md_section_align (seg, addr) | |
1608 | asection *seg; | |
1609 | valueT addr; | |
1610 | { | |
1611 | int align = bfd_get_section_alignment (stdoutput, seg); | |
1612 | ||
1613 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
1614 | } | |
1615 | ||
1616 | /* We don't have any form of relaxing. */ | |
1617 | ||
1618 | int | |
1619 | md_estimate_size_before_relax (fragp, seg) | |
1620 | fragS *fragp ATTRIBUTE_UNUSED; | |
1621 | asection *seg ATTRIBUTE_UNUSED; | |
1622 | { | |
1623 | abort (); | |
1624 | return 0; | |
1625 | } | |
1626 | ||
1627 | /* Convert a machine dependent frag. We never generate these. */ | |
1628 | ||
1629 | void | |
1630 | md_convert_frag (abfd, sec, fragp) | |
1631 | bfd *abfd ATTRIBUTE_UNUSED; | |
1632 | asection *sec ATTRIBUTE_UNUSED; | |
1633 | fragS *fragp ATTRIBUTE_UNUSED; | |
1634 | { | |
1635 | abort (); | |
1636 | } | |
1637 | ||
1638 | symbolS * | |
1639 | md_undefined_symbol (name) | |
1640 | char *name; | |
1641 | { | |
98d3f06f | 1642 | if (*name == '_' && *(name + 1) == 'G' |
07726851 | 1643 | && strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) |
98d3f06f KH |
1644 | { |
1645 | if (!GOT_symbol) | |
1646 | { | |
1647 | if (symbol_find (name)) | |
1648 | as_bad (_("GOT already in symbol table")); | |
1649 | GOT_symbol = symbol_new (name, undefined_section, | |
1650 | (valueT) 0, &zero_address_frag); | |
1651 | } | |
1652 | return GOT_symbol; | |
1653 | } | |
a85d7ed0 NC |
1654 | return 0; |
1655 | } | |
1656 | ||
1657 | /* Functions concerning relocs. */ | |
1658 | ||
1659 | /* The location from which a PC relative jump should be calculated, | |
1660 | given a PC relative reloc. */ | |
1661 | ||
1662 | long | |
1663 | md_pcrel_from_section (fixp, sec) | |
1664 | fixS *fixp; | |
1665 | segT sec ATTRIBUTE_UNUSED; | |
1666 | { | |
1667 | return fixp->fx_frag->fr_address + fixp->fx_where; | |
1668 | } | |
1669 | ||
1670 | /* Here we decide which fixups can be adjusted to make them relative to | |
1671 | the beginning of the section instead of the symbol. Basically we need | |
1672 | to make sure that the dynamic relocations are done correctly, so in | |
1673 | some cases we force the original symbol to be used. */ | |
1674 | int | |
98d3f06f KH |
1675 | tc_s390_fix_adjustable (fixP) |
1676 | fixS *fixP; | |
a85d7ed0 | 1677 | { |
0a00dd48 MS |
1678 | /* Don't adjust references to merge sections. */ |
1679 | if ((S_GET_SEGMENT (fixP->fx_addsy)->flags & SEC_MERGE) != 0) | |
1680 | return 0; | |
a85d7ed0 | 1681 | /* adjust_reloc_syms doesn't know about the GOT. */ |
2a19f73f MS |
1682 | if ( fixP->fx_r_type == BFD_RELOC_16_GOTOFF |
1683 | || fixP->fx_r_type == BFD_RELOC_32_GOTOFF | |
1684 | || fixP->fx_r_type == BFD_RELOC_390_GOTOFF64 | |
1685 | || fixP->fx_r_type == BFD_RELOC_390_PLTOFF16 | |
1686 | || fixP->fx_r_type == BFD_RELOC_390_PLTOFF32 | |
1687 | || fixP->fx_r_type == BFD_RELOC_390_PLTOFF64 | |
a85d7ed0 NC |
1688 | || fixP->fx_r_type == BFD_RELOC_390_PLT16DBL |
1689 | || fixP->fx_r_type == BFD_RELOC_390_PLT32 | |
1690 | || fixP->fx_r_type == BFD_RELOC_390_PLT32DBL | |
1691 | || fixP->fx_r_type == BFD_RELOC_390_PLT64 | |
1692 | || fixP->fx_r_type == BFD_RELOC_390_GOT12 | |
1693 | || fixP->fx_r_type == BFD_RELOC_390_GOT16 | |
1694 | || fixP->fx_r_type == BFD_RELOC_32_GOT_PCREL | |
1695 | || fixP->fx_r_type == BFD_RELOC_390_GOT64 | |
07855bec | 1696 | || fixP->fx_r_type == BFD_RELOC_390_GOTENT |
2a19f73f MS |
1697 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT12 |
1698 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT16 | |
1699 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT32 | |
1700 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT64 | |
1701 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLTENT | |
a85d7ed0 NC |
1702 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
1703 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
1704 | return 0; | |
1705 | return 1; | |
1706 | } | |
1707 | ||
b8edc45c | 1708 | /* Return true if we must always emit a reloc for a type and false if |
c03099e6 | 1709 | there is some hope of resolving it at assembly time. */ |
b8edc45c MS |
1710 | int |
1711 | tc_s390_force_relocation (fixp) | |
1712 | struct fix *fixp; | |
1713 | { | |
1714 | /* Ensure we emit a relocation for every reference to the global | |
1715 | offset table or to the procedure link table. */ | |
1716 | switch (fixp->fx_r_type) | |
1717 | { | |
1718 | case BFD_RELOC_390_GOT12: | |
1719 | case BFD_RELOC_32_GOT_PCREL: | |
1720 | case BFD_RELOC_32_GOTOFF: | |
2a19f73f MS |
1721 | case BFD_RELOC_390_GOTOFF64: |
1722 | case BFD_RELOC_390_PLTOFF16: | |
1723 | case BFD_RELOC_390_PLTOFF32: | |
1724 | case BFD_RELOC_390_PLTOFF64: | |
b8edc45c MS |
1725 | case BFD_RELOC_390_GOTPC: |
1726 | case BFD_RELOC_390_GOT16: | |
1727 | case BFD_RELOC_390_GOTPCDBL: | |
1728 | case BFD_RELOC_390_GOT64: | |
1729 | case BFD_RELOC_390_GOTENT: | |
1730 | case BFD_RELOC_390_PLT32: | |
1731 | case BFD_RELOC_390_PLT16DBL: | |
1732 | case BFD_RELOC_390_PLT32DBL: | |
1733 | case BFD_RELOC_390_PLT64: | |
2a19f73f MS |
1734 | case BFD_RELOC_390_GOTPLT12: |
1735 | case BFD_RELOC_390_GOTPLT16: | |
1736 | case BFD_RELOC_390_GOTPLT32: | |
1737 | case BFD_RELOC_390_GOTPLT64: | |
1738 | case BFD_RELOC_390_GOTPLTENT: | |
b8edc45c MS |
1739 | return 1; |
1740 | default: | |
a161fe53 | 1741 | break;; |
b8edc45c | 1742 | } |
a161fe53 | 1743 | |
ae6063d4 | 1744 | return generic_force_reloc (fixp); |
b8edc45c MS |
1745 | } |
1746 | ||
a85d7ed0 NC |
1747 | /* Apply a fixup to the object code. This is called for all the |
1748 | fixups we generated by the call to fix_new_exp, above. In the call | |
1749 | above we used a reloc code which was the largest legal reloc code | |
1750 | plus the operand index. Here we undo that to recover the operand | |
1751 | index. At this point all symbol values should be fully resolved, | |
1752 | and we attempt to completely resolve the reloc. If we can not do | |
1753 | that, we determine the correct reloc code and put it back in the | |
1754 | fixup. */ | |
1755 | ||
94f592af NC |
1756 | void |
1757 | md_apply_fix3 (fixP, valP, seg) | |
1758 | fixS *fixP; | |
1759 | valueT *valP; | |
a161fe53 | 1760 | segT seg ATTRIBUTE_UNUSED; |
a85d7ed0 NC |
1761 | { |
1762 | char *where; | |
98d3f06f | 1763 | valueT value = *valP; |
a85d7ed0 | 1764 | |
94f592af | 1765 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
a85d7ed0 | 1766 | |
98d3f06f | 1767 | if (fixP->fx_subsy != NULL) |
f1fc51da MS |
1768 | as_bad_where (fixP->fx_file, fixP->fx_line, |
1769 | "cannot emit relocation %s against subsy symbol %s", | |
1770 | bfd_get_reloc_code_name (fixP->fx_r_type), | |
1771 | S_GET_NAME (fixP->fx_subsy)); | |
98d3f06f KH |
1772 | |
1773 | if (fixP->fx_addsy != NULL) | |
07855bec | 1774 | { |
94f592af NC |
1775 | if (fixP->fx_pcrel) |
1776 | value += fixP->fx_frag->fr_address + fixP->fx_where; | |
07855bec NC |
1777 | } |
1778 | else | |
94f592af | 1779 | fixP->fx_done = 1; |
a85d7ed0 | 1780 | |
94f592af | 1781 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) |
07855bec NC |
1782 | { |
1783 | const struct s390_operand *operand; | |
1784 | int opindex; | |
198ce79b | 1785 | |
94f592af | 1786 | opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; |
07855bec | 1787 | operand = &s390_operands[opindex]; |
198ce79b | 1788 | |
94f592af | 1789 | if (fixP->fx_done) |
07855bec NC |
1790 | { |
1791 | /* Insert the fully resolved operand value. */ | |
1792 | s390_insert_operand (where, operand, (offsetT) value, | |
94f592af NC |
1793 | fixP->fx_file, fixP->fx_line); |
1794 | return; | |
07855bec | 1795 | } |
198ce79b | 1796 | |
07855bec NC |
1797 | /* Determine a BFD reloc value based on the operand information. |
1798 | We are only prepared to turn a few of the operands into | |
1799 | relocs. */ | |
94f592af | 1800 | fixP->fx_offset = value; |
07855bec NC |
1801 | if (operand->bits == 12 && operand->shift == 20) |
1802 | { | |
94f592af NC |
1803 | fixP->fx_size = 2; |
1804 | fixP->fx_where += 2; | |
1805 | fixP->fx_r_type = BFD_RELOC_390_12; | |
07855bec NC |
1806 | } |
1807 | else if (operand->bits == 12 && operand->shift == 36) | |
1808 | { | |
94f592af NC |
1809 | fixP->fx_size = 2; |
1810 | fixP->fx_where += 4; | |
1811 | fixP->fx_r_type = BFD_RELOC_390_12; | |
07855bec NC |
1812 | } |
1813 | else if (operand->bits == 8 && operand->shift == 8) | |
1814 | { | |
94f592af NC |
1815 | fixP->fx_size = 1; |
1816 | fixP->fx_where += 1; | |
1817 | fixP->fx_r_type = BFD_RELOC_8; | |
07855bec NC |
1818 | } |
1819 | else if (operand->bits == 16 && operand->shift == 16) | |
1820 | { | |
94f592af NC |
1821 | fixP->fx_size = 2; |
1822 | fixP->fx_where += 2; | |
07855bec NC |
1823 | if (operand->flags & S390_OPERAND_PCREL) |
1824 | { | |
94f592af NC |
1825 | fixP->fx_r_type = BFD_RELOC_390_PC16DBL; |
1826 | fixP->fx_offset += 2; | |
07855bec NC |
1827 | } |
1828 | else | |
94f592af | 1829 | fixP->fx_r_type = BFD_RELOC_16; |
07855bec | 1830 | } |
16a419ba NC |
1831 | else if (operand->bits == 32 && operand->shift == 16 |
1832 | && (operand->flags & S390_OPERAND_PCREL)) | |
07855bec | 1833 | { |
94f592af NC |
1834 | fixP->fx_size = 4; |
1835 | fixP->fx_where += 2; | |
1836 | fixP->fx_offset += 2; | |
1837 | fixP->fx_r_type = BFD_RELOC_390_PC32DBL; | |
07855bec | 1838 | } |
a85d7ed0 | 1839 | else |
07855bec NC |
1840 | { |
1841 | char *sfile; | |
1842 | unsigned int sline; | |
198ce79b | 1843 | |
07855bec NC |
1844 | /* Use expr_symbol_where to see if this is an expression |
1845 | symbol. */ | |
94f592af NC |
1846 | if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline)) |
1847 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
07855bec NC |
1848 | _("unresolved expression that must be resolved")); |
1849 | else | |
94f592af | 1850 | as_bad_where (fixP->fx_file, fixP->fx_line, |
07855bec | 1851 | _("unsupported relocation type")); |
94f592af NC |
1852 | fixP->fx_done = 1; |
1853 | return; | |
07855bec | 1854 | } |
a85d7ed0 | 1855 | } |
07855bec NC |
1856 | else |
1857 | { | |
94f592af | 1858 | switch (fixP->fx_r_type) |
07855bec NC |
1859 | { |
1860 | case BFD_RELOC_8: | |
94f592af | 1861 | if (fixP->fx_pcrel) |
07855bec | 1862 | abort (); |
94f592af | 1863 | if (fixP->fx_done) |
07855bec NC |
1864 | md_number_to_chars (where, value, 1); |
1865 | break; | |
1866 | case BFD_RELOC_390_12: | |
1867 | case BFD_RELOC_390_GOT12: | |
2a19f73f | 1868 | case BFD_RELOC_390_GOTPLT12: |
94f592af | 1869 | if (fixP->fx_done) |
07855bec NC |
1870 | { |
1871 | unsigned short mop; | |
1872 | ||
1873 | mop = bfd_getb16 ((unsigned char *) where); | |
1874 | mop |= (unsigned short) (value & 0xfff); | |
1875 | bfd_putb16 ((bfd_vma) mop, (unsigned char *) where); | |
198ce79b | 1876 | } |
07855bec | 1877 | break; |
198ce79b | 1878 | |
07855bec NC |
1879 | case BFD_RELOC_16: |
1880 | case BFD_RELOC_GPREL16: | |
1881 | case BFD_RELOC_16_GOT_PCREL: | |
1882 | case BFD_RELOC_16_GOTOFF: | |
94f592af NC |
1883 | if (fixP->fx_pcrel) |
1884 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
07855bec | 1885 | "cannot emit PC relative %s relocation%s%s", |
94f592af NC |
1886 | bfd_get_reloc_code_name (fixP->fx_r_type), |
1887 | fixP->fx_addsy != NULL ? " against " : "", | |
1888 | (fixP->fx_addsy != NULL | |
1889 | ? S_GET_NAME (fixP->fx_addsy) | |
07855bec | 1890 | : "")); |
94f592af | 1891 | if (fixP->fx_done) |
07855bec NC |
1892 | md_number_to_chars (where, value, 2); |
1893 | break; | |
1894 | case BFD_RELOC_390_GOT16: | |
2a19f73f MS |
1895 | case BFD_RELOC_390_PLTOFF16: |
1896 | case BFD_RELOC_390_GOTPLT16: | |
94f592af | 1897 | if (fixP->fx_done) |
07855bec NC |
1898 | md_number_to_chars (where, value, 2); |
1899 | break; | |
1900 | case BFD_RELOC_390_PC16DBL: | |
1901 | case BFD_RELOC_390_PLT16DBL: | |
1902 | value += 2; | |
94f592af | 1903 | if (fixP->fx_done) |
07855bec NC |
1904 | md_number_to_chars (where, (offsetT) value >> 1, 2); |
1905 | break; | |
1906 | ||
1907 | case BFD_RELOC_32: | |
94f592af NC |
1908 | if (fixP->fx_pcrel) |
1909 | fixP->fx_r_type = BFD_RELOC_32_PCREL; | |
07855bec | 1910 | else |
94f592af NC |
1911 | fixP->fx_r_type = BFD_RELOC_32; |
1912 | if (fixP->fx_done) | |
07855bec NC |
1913 | md_number_to_chars (where, value, 4); |
1914 | break; | |
1915 | case BFD_RELOC_32_PCREL: | |
1916 | case BFD_RELOC_32_BASEREL: | |
94f592af NC |
1917 | fixP->fx_r_type = BFD_RELOC_32_PCREL; |
1918 | if (fixP->fx_done) | |
07855bec NC |
1919 | md_number_to_chars (where, value, 4); |
1920 | break; | |
1921 | case BFD_RELOC_32_GOT_PCREL: | |
2a19f73f | 1922 | case BFD_RELOC_390_PLTOFF32: |
07855bec | 1923 | case BFD_RELOC_390_PLT32: |
2a19f73f | 1924 | case BFD_RELOC_390_GOTPLT32: |
94f592af | 1925 | if (fixP->fx_done) |
07855bec NC |
1926 | md_number_to_chars (where, value, 4); |
1927 | break; | |
1928 | case BFD_RELOC_390_PC32DBL: | |
1929 | case BFD_RELOC_390_PLT32DBL: | |
1930 | case BFD_RELOC_390_GOTPCDBL: | |
1931 | case BFD_RELOC_390_GOTENT: | |
2a19f73f | 1932 | case BFD_RELOC_390_GOTPLTENT: |
07855bec | 1933 | value += 2; |
94f592af | 1934 | if (fixP->fx_done) |
07855bec NC |
1935 | md_number_to_chars (where, (offsetT) value >> 1, 4); |
1936 | break; | |
1937 | ||
1938 | case BFD_RELOC_32_GOTOFF: | |
94f592af | 1939 | if (fixP->fx_done) |
07726851 | 1940 | md_number_to_chars (where, value, sizeof (int)); |
07855bec NC |
1941 | break; |
1942 | ||
2a19f73f MS |
1943 | case BFD_RELOC_390_GOTOFF64: |
1944 | if (fixP->fx_done) | |
1945 | md_number_to_chars (where, value, 8); | |
1946 | break; | |
1947 | ||
07855bec | 1948 | case BFD_RELOC_390_GOT64: |
2a19f73f | 1949 | case BFD_RELOC_390_PLTOFF64: |
07855bec | 1950 | case BFD_RELOC_390_PLT64: |
2a19f73f | 1951 | case BFD_RELOC_390_GOTPLT64: |
94f592af | 1952 | if (fixP->fx_done) |
07855bec NC |
1953 | md_number_to_chars (where, value, 8); |
1954 | break; | |
1955 | ||
1956 | case BFD_RELOC_64: | |
94f592af NC |
1957 | if (fixP->fx_pcrel) |
1958 | fixP->fx_r_type = BFD_RELOC_64_PCREL; | |
07855bec | 1959 | else |
94f592af NC |
1960 | fixP->fx_r_type = BFD_RELOC_64; |
1961 | if (fixP->fx_done) | |
07855bec NC |
1962 | md_number_to_chars (where, value, 8); |
1963 | break; | |
1964 | ||
1965 | case BFD_RELOC_64_PCREL: | |
94f592af NC |
1966 | fixP->fx_r_type = BFD_RELOC_64_PCREL; |
1967 | if (fixP->fx_done) | |
07855bec NC |
1968 | md_number_to_chars (where, value, 8); |
1969 | break; | |
1970 | ||
1971 | case BFD_RELOC_VTABLE_INHERIT: | |
1972 | case BFD_RELOC_VTABLE_ENTRY: | |
94f592af NC |
1973 | fixP->fx_done = 0; |
1974 | return; | |
07855bec NC |
1975 | |
1976 | default: | |
1977 | { | |
94f592af | 1978 | const char *reloc_name = bfd_get_reloc_code_name (fixP->fx_r_type); |
198ce79b | 1979 | |
07855bec NC |
1980 | if (reloc_name != NULL) |
1981 | fprintf (stderr, "Gas failure, reloc type %s\n", reloc_name); | |
1982 | else | |
94f592af | 1983 | fprintf (stderr, "Gas failure, reloc type #%i\n", fixP->fx_r_type); |
07855bec NC |
1984 | fflush (stderr); |
1985 | abort (); | |
1986 | } | |
1987 | } | |
a85d7ed0 | 1988 | |
94f592af | 1989 | fixP->fx_offset = value; |
07855bec | 1990 | } |
a85d7ed0 NC |
1991 | } |
1992 | ||
1993 | /* Generate a reloc for a fixup. */ | |
1994 | ||
1995 | arelent * | |
1996 | tc_gen_reloc (seg, fixp) | |
1997 | asection *seg ATTRIBUTE_UNUSED; | |
1998 | fixS *fixp; | |
1999 | { | |
2000 | bfd_reloc_code_real_type code; | |
2001 | arelent *reloc; | |
2002 | ||
2003 | code = fixp->fx_r_type; | |
07855bec NC |
2004 | if (GOT_symbol && fixp->fx_addsy == GOT_symbol) |
2005 | { | |
16a419ba NC |
2006 | if ( (s390_arch_size == 32 && code == BFD_RELOC_32_PCREL) |
2007 | || (s390_arch_size == 64 && code == BFD_RELOC_64_PCREL)) | |
07855bec NC |
2008 | code = BFD_RELOC_390_GOTPC; |
2009 | if (code == BFD_RELOC_390_PC32DBL) | |
2010 | code = BFD_RELOC_390_GOTPCDBL; | |
2011 | } | |
a85d7ed0 NC |
2012 | |
2013 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
2014 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2015 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
2016 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2017 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); | |
2018 | if (reloc->howto == NULL) | |
2019 | { | |
2020 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
98d3f06f KH |
2021 | _("cannot represent relocation type %s"), |
2022 | bfd_get_reloc_code_name (code)); | |
a85d7ed0 NC |
2023 | /* Set howto to a garbage value so that we can keep going. */ |
2024 | reloc->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); | |
2025 | assert (reloc->howto != NULL); | |
2026 | } | |
2027 | reloc->addend = fixp->fx_offset; | |
2028 | ||
2029 | return reloc; | |
2030 | } |