Commit | Line | Data |
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a85d7ed0 | 1 | /* tc-s390.c -- Assemble for the S390 |
20203fb9 | 2 | Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
87975d2a | 3 | 2009, 2010 Free Software Foundation, Inc. |
a85d7ed0 NC |
4 | Contributed by Martin Schwidefsky (schwidefsky@de.ibm.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 | |
ec2655a6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
a85d7ed0 NC |
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 | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
a85d7ed0 | 22 | |
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" |
75e21f08 | 28 | #include "dw2gencfi.h" |
a85d7ed0 NC |
29 | |
30 | #include "opcode/s390.h" | |
31 | #include "elf/s390.h" | |
32 | ||
16a419ba | 33 | /* The default architecture. */ |
a85d7ed0 NC |
34 | #ifndef DEFAULT_ARCH |
35 | #define DEFAULT_ARCH "s390" | |
36 | #endif | |
37 | static char *default_arch = DEFAULT_ARCH; | |
38 | /* Either 32 or 64, selects file format. */ | |
37a58793 MS |
39 | static int s390_arch_size = 0; |
40 | ||
1e8766d7 AK |
41 | /* If no -march option was given default to the highest available CPU. |
42 | Since with S/390 a newer CPU always supports everything from its | |
43 | predecessors this will accept every valid asm input. */ | |
44 | static unsigned int current_cpu = S390_OPCODE_MAXCPU - 1; | |
37a58793 | 45 | static unsigned int current_mode_mask = 0; |
a85d7ed0 | 46 | |
b34976b6 | 47 | /* Whether to use user friendly register names. Default is TRUE. */ |
a85d7ed0 | 48 | #ifndef TARGET_REG_NAMES_P |
b34976b6 | 49 | #define TARGET_REG_NAMES_P TRUE |
a85d7ed0 NC |
50 | #endif |
51 | ||
b34976b6 | 52 | static bfd_boolean reg_names_p = TARGET_REG_NAMES_P; |
a85d7ed0 | 53 | |
16a419ba | 54 | /* Set to TRUE if we want to warn about zero base/index registers. */ |
b34976b6 | 55 | static bfd_boolean warn_areg_zero = FALSE; |
16a419ba | 56 | |
a85d7ed0 NC |
57 | /* Generic assembler global variables which must be defined by all |
58 | targets. */ | |
59 | ||
60 | const char comment_chars[] = "#"; | |
61 | ||
62 | /* Characters which start a comment at the beginning of a line. */ | |
63 | const char line_comment_chars[] = "#"; | |
64 | ||
65 | /* Characters which may be used to separate multiple commands on a | |
66 | single line. */ | |
67 | const char line_separator_chars[] = ";"; | |
68 | ||
69 | /* Characters which are used to indicate an exponent in a floating | |
70 | point number. */ | |
71 | const char EXP_CHARS[] = "eE"; | |
72 | ||
73 | /* Characters which mean that a number is a floating point constant, | |
74 | as in 0d1.0. */ | |
75 | const char FLT_CHARS[] = "dD"; | |
76 | ||
75e21f08 JJ |
77 | /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */ |
78 | int s390_cie_data_alignment; | |
79 | ||
a85d7ed0 NC |
80 | /* The target specific pseudo-ops which we support. */ |
81 | ||
82 | /* Define the prototypes for the pseudo-ops */ | |
5a49b8ac AM |
83 | static void s390_byte (int); |
84 | static void s390_elf_cons (int); | |
85 | static void s390_bss (int); | |
86 | static void s390_insn (int); | |
87 | static void s390_literals (int); | |
902cc293 | 88 | static void s390_machine (int); |
a85d7ed0 NC |
89 | |
90 | const pseudo_typeS md_pseudo_table[] = | |
91 | { | |
92 | { "align", s_align_bytes, 0 }, | |
98d3f06f | 93 | /* Pseudo-ops which must be defined. */ |
198ce79b | 94 | { "bss", s390_bss, 0 }, |
a85d7ed0 NC |
95 | { "insn", s390_insn, 0 }, |
96 | /* Pseudo-ops which must be overridden. */ | |
97 | { "byte", s390_byte, 0 }, | |
98 | { "short", s390_elf_cons, 2 }, | |
99 | { "long", s390_elf_cons, 4 }, | |
100 | { "quad", s390_elf_cons, 8 }, | |
101 | { "ltorg", s390_literals, 0 }, | |
38a57ae7 | 102 | { "string", stringer, 8 + 1 }, |
902cc293 | 103 | { "machine", s390_machine, 0 }, |
a85d7ed0 NC |
104 | { NULL, NULL, 0 } |
105 | }; | |
106 | ||
107 | ||
108 | /* Structure to hold information about predefined registers. */ | |
109 | struct pd_reg | |
110 | { | |
111 | char *name; | |
112 | int value; | |
113 | }; | |
114 | ||
115 | /* List of registers that are pre-defined: | |
116 | ||
117 | Each access register has a predefined name of the form: | |
118 | a<reg_num> which has the value <reg_num>. | |
119 | ||
120 | Each control register has a predefined name of the form: | |
121 | c<reg_num> which has the value <reg_num>. | |
122 | ||
123 | Each general register has a predefined name of the form: | |
124 | r<reg_num> which has the value <reg_num>. | |
125 | ||
126 | Each floating point register a has predefined name of the form: | |
127 | f<reg_num> which has the value <reg_num>. | |
128 | ||
129 | There are individual registers as well: | |
130 | sp has the value 15 | |
131 | lit has the value 12 | |
132 | ||
98d3f06f | 133 | The table is sorted. Suitable for searching by a binary search. */ |
a85d7ed0 NC |
134 | |
135 | static const struct pd_reg pre_defined_registers[] = | |
136 | { | |
137 | { "a0", 0 }, /* Access registers */ | |
138 | { "a1", 1 }, | |
139 | { "a10", 10 }, | |
140 | { "a11", 11 }, | |
141 | { "a12", 12 }, | |
142 | { "a13", 13 }, | |
143 | { "a14", 14 }, | |
144 | { "a15", 15 }, | |
145 | { "a2", 2 }, | |
146 | { "a3", 3 }, | |
147 | { "a4", 4 }, | |
148 | { "a5", 5 }, | |
149 | { "a6", 6 }, | |
150 | { "a7", 7 }, | |
151 | { "a8", 8 }, | |
152 | { "a9", 9 }, | |
153 | ||
154 | { "c0", 0 }, /* Control registers */ | |
155 | { "c1", 1 }, | |
156 | { "c10", 10 }, | |
157 | { "c11", 11 }, | |
158 | { "c12", 12 }, | |
159 | { "c13", 13 }, | |
160 | { "c14", 14 }, | |
161 | { "c15", 15 }, | |
162 | { "c2", 2 }, | |
163 | { "c3", 3 }, | |
164 | { "c4", 4 }, | |
165 | { "c5", 5 }, | |
166 | { "c6", 6 }, | |
167 | { "c7", 7 }, | |
168 | { "c8", 8 }, | |
169 | { "c9", 9 }, | |
170 | ||
171 | { "f0", 0 }, /* Floating point registers */ | |
198ce79b AJ |
172 | { "f1", 1 }, |
173 | { "f10", 10 }, | |
174 | { "f11", 11 }, | |
175 | { "f12", 12 }, | |
176 | { "f13", 13 }, | |
177 | { "f14", 14 }, | |
178 | { "f15", 15 }, | |
179 | { "f2", 2 }, | |
180 | { "f3", 3 }, | |
181 | { "f4", 4 }, | |
182 | { "f5", 5 }, | |
183 | { "f6", 6 }, | |
184 | { "f7", 7 }, | |
185 | { "f8", 8 }, | |
186 | { "f9", 9 }, | |
a85d7ed0 NC |
187 | |
188 | { "lit", 13 }, /* Pointer to literal pool */ | |
189 | ||
190 | { "r0", 0 }, /* General purpose registers */ | |
191 | { "r1", 1 }, | |
192 | { "r10", 10 }, | |
193 | { "r11", 11 }, | |
194 | { "r12", 12 }, | |
195 | { "r13", 13 }, | |
196 | { "r14", 14 }, | |
197 | { "r15", 15 }, | |
198 | { "r2", 2 }, | |
199 | { "r3", 3 }, | |
200 | { "r4", 4 }, | |
201 | { "r5", 5 }, | |
202 | { "r6", 6 }, | |
203 | { "r7", 7 }, | |
204 | { "r8", 8 }, | |
205 | { "r9", 9 }, | |
206 | ||
207 | { "sp", 15 }, /* Stack pointer */ | |
208 | ||
209 | }; | |
210 | ||
07726851 | 211 | #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg)) |
a85d7ed0 NC |
212 | |
213 | /* Given NAME, find the register number associated with that name, return | |
214 | the integer value associated with the given name or -1 on failure. */ | |
215 | ||
216 | static int | |
5a49b8ac | 217 | reg_name_search (const struct pd_reg *regs, int regcount, const char *name) |
a85d7ed0 NC |
218 | { |
219 | int middle, low, high; | |
220 | int cmp; | |
221 | ||
222 | low = 0; | |
223 | high = regcount - 1; | |
224 | ||
225 | do | |
226 | { | |
227 | middle = (low + high) / 2; | |
228 | cmp = strcasecmp (name, regs[middle].name); | |
229 | if (cmp < 0) | |
230 | high = middle - 1; | |
231 | else if (cmp > 0) | |
232 | low = middle + 1; | |
233 | else | |
234 | return regs[middle].value; | |
235 | } | |
236 | while (low <= high); | |
237 | ||
238 | return -1; | |
239 | } | |
240 | ||
241 | ||
242 | /* | |
243 | * Summary of register_name(). | |
244 | * | |
245 | * in: Input_line_pointer points to 1st char of operand. | |
246 | * | |
247 | * out: A expressionS. | |
248 | * The operand may have been a register: in this case, X_op == O_register, | |
249 | * X_add_number is set to the register number, and truth is returned. | |
250 | * Input_line_pointer->(next non-blank) char after operand, or is in its | |
251 | * original state. | |
252 | */ | |
253 | ||
b34976b6 | 254 | static bfd_boolean |
5a49b8ac | 255 | register_name (expressionS *expressionP) |
a85d7ed0 NC |
256 | { |
257 | int reg_number; | |
258 | char *name; | |
259 | char *start; | |
260 | char c; | |
261 | ||
468cced8 | 262 | /* Find the spelling of the operand. */ |
a85d7ed0 | 263 | start = name = input_line_pointer; |
3882b010 | 264 | if (name[0] == '%' && ISALPHA (name[1])) |
a85d7ed0 NC |
265 | name = ++input_line_pointer; |
266 | else | |
b34976b6 | 267 | return FALSE; |
a85d7ed0 NC |
268 | |
269 | c = get_symbol_end (); | |
270 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name); | |
271 | ||
468cced8 AM |
272 | /* Put back the delimiting char. */ |
273 | *input_line_pointer = c; | |
274 | ||
275 | /* Look to see if it's in the register table. */ | |
198ce79b | 276 | if (reg_number >= 0) |
a85d7ed0 NC |
277 | { |
278 | expressionP->X_op = O_register; | |
279 | expressionP->X_add_number = reg_number; | |
198ce79b | 280 | |
468cced8 | 281 | /* Make the rest nice. */ |
a85d7ed0 NC |
282 | expressionP->X_add_symbol = NULL; |
283 | expressionP->X_op_symbol = NULL; | |
b34976b6 | 284 | return TRUE; |
a85d7ed0 | 285 | } |
468cced8 AM |
286 | |
287 | /* Reset the line as if we had not done anything. */ | |
288 | input_line_pointer = start; | |
b34976b6 | 289 | return FALSE; |
a85d7ed0 NC |
290 | } |
291 | ||
292 | /* Local variables. */ | |
293 | ||
294 | /* Opformat hash table. */ | |
295 | static struct hash_control *s390_opformat_hash; | |
296 | ||
297 | /* Opcode hash table. */ | |
902cc293 | 298 | static struct hash_control *s390_opcode_hash = NULL; |
a85d7ed0 NC |
299 | |
300 | /* Flags to set in the elf header */ | |
301 | static flagword s390_flags = 0; | |
302 | ||
303 | symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */ | |
304 | ||
305 | #ifndef WORKING_DOT_WORD | |
2b4f075a HPN |
306 | int md_short_jump_size = 4; |
307 | int md_long_jump_size = 4; | |
a85d7ed0 NC |
308 | #endif |
309 | ||
5a38dc70 | 310 | const char *md_shortopts = "A:m:kVQ:"; |
a85d7ed0 NC |
311 | struct option md_longopts[] = { |
312 | {NULL, no_argument, NULL, 0} | |
313 | }; | |
07726851 | 314 | size_t md_longopts_size = sizeof (md_longopts); |
a85d7ed0 NC |
315 | |
316 | /* Initialize the default opcode arch and word size from the default | |
37a58793 | 317 | architecture name if not specified by an option. */ |
a85d7ed0 | 318 | static void |
5a49b8ac | 319 | init_default_arch (void) |
a85d7ed0 | 320 | { |
07726851 | 321 | if (strcmp (default_arch, "s390") == 0) |
07855bec | 322 | { |
37a58793 MS |
323 | if (s390_arch_size == 0) |
324 | s390_arch_size = 32; | |
07855bec | 325 | } |
07726851 | 326 | else if (strcmp (default_arch, "s390x") == 0) |
07855bec | 327 | { |
37a58793 MS |
328 | if (s390_arch_size == 0) |
329 | s390_arch_size = 64; | |
07855bec NC |
330 | } |
331 | else | |
20203fb9 | 332 | as_fatal (_("Invalid default architecture, broken assembler.")); |
df9a398f MS |
333 | |
334 | if (current_mode_mask == 0) | |
335 | { | |
1e8766d7 AK |
336 | /* Default to z/Architecture mode if the CPU supports it. */ |
337 | if (current_cpu < S390_OPCODE_Z900) | |
df9a398f MS |
338 | current_mode_mask = 1 << S390_OPCODE_ESA; |
339 | else | |
340 | current_mode_mask = 1 << S390_OPCODE_ZARCH; | |
341 | } | |
a85d7ed0 NC |
342 | } |
343 | ||
344 | /* Called by TARGET_FORMAT. */ | |
345 | const char * | |
5a49b8ac | 346 | s390_target_format (void) |
a85d7ed0 NC |
347 | { |
348 | /* We don't get a chance to initialize anything before we're called, | |
349 | so handle that now. */ | |
2ebb4b88 | 350 | init_default_arch (); |
a85d7ed0 NC |
351 | |
352 | return s390_arch_size == 64 ? "elf64-s390" : "elf32-s390"; | |
353 | } | |
354 | ||
902cc293 AK |
355 | /* Map a CPU string as given with -march= or .machine to the |
356 | respective enum s390_opcode_cpu_val value. 0xffffffff is returned | |
357 | in case of an error. */ | |
358 | ||
359 | static unsigned int | |
360 | s390_parse_cpu (char *arg) | |
361 | { | |
362 | if (strcmp (arg, "g5") == 0) | |
363 | return S390_OPCODE_G5; | |
364 | else if (strcmp (arg, "g6") == 0) | |
365 | return S390_OPCODE_G6; | |
366 | else if (strcmp (arg, "z900") == 0) | |
367 | return S390_OPCODE_Z900; | |
368 | else if (strcmp (arg, "z990") == 0) | |
369 | return S390_OPCODE_Z990; | |
370 | else if (strcmp (arg, "z9-109") == 0) | |
371 | return S390_OPCODE_Z9_109; | |
372 | else if (strcmp (arg, "z9-ec") == 0) | |
373 | return S390_OPCODE_Z9_EC; | |
374 | else if (strcmp (arg, "z10") == 0) | |
375 | return S390_OPCODE_Z10; | |
376 | else if (strcmp (arg, "z196") == 0) | |
377 | return S390_OPCODE_Z196; | |
378 | else if (strcmp (arg, "all") == 0) | |
379 | return S390_OPCODE_MAXCPU - 1; | |
380 | else | |
381 | return -1; | |
382 | } | |
383 | ||
a85d7ed0 | 384 | int |
5a49b8ac | 385 | md_parse_option (int c, char *arg) |
a85d7ed0 | 386 | { |
07855bec NC |
387 | switch (c) |
388 | { | |
389 | /* -k: Ignore for FreeBSD compatibility. */ | |
390 | case 'k': | |
391 | break; | |
392 | case 'm': | |
393 | if (arg != NULL && strcmp (arg, "regnames") == 0) | |
b34976b6 | 394 | reg_names_p = TRUE; |
198ce79b | 395 | |
07855bec | 396 | else if (arg != NULL && strcmp (arg, "no-regnames") == 0) |
b34976b6 | 397 | reg_names_p = FALSE; |
198ce79b | 398 | |
16a419ba NC |
399 | else if (arg != NULL && strcmp (arg, "warn-areg-zero") == 0) |
400 | warn_areg_zero = TRUE; | |
401 | ||
ff0fb565 | 402 | else if (arg != NULL && strcmp (arg, "31") == 0) |
75504fed | 403 | s390_arch_size = 32; |
ff0fb565 MS |
404 | |
405 | else if (arg != NULL && strcmp (arg, "64") == 0) | |
406 | s390_arch_size = 64; | |
407 | ||
37a58793 MS |
408 | else if (arg != NULL && strcmp (arg, "esa") == 0) |
409 | current_mode_mask = 1 << S390_OPCODE_ESA; | |
410 | ||
411 | else if (arg != NULL && strcmp (arg, "zarch") == 0) | |
412 | current_mode_mask = 1 << S390_OPCODE_ZARCH; | |
413 | ||
414 | else if (arg != NULL && strncmp (arg, "arch=", 5) == 0) | |
415 | { | |
902cc293 AK |
416 | current_cpu = s390_parse_cpu (arg + 5); |
417 | ||
418 | if (current_cpu == (unsigned int)-1) | |
37a58793 MS |
419 | { |
420 | as_bad (_("invalid switch -m%s"), arg); | |
421 | return 0; | |
422 | } | |
423 | } | |
424 | ||
07855bec NC |
425 | else |
426 | { | |
427 | as_bad (_("invalid switch -m%s"), arg); | |
428 | return 0; | |
429 | } | |
430 | break; | |
198ce79b | 431 | |
07855bec | 432 | case 'A': |
67c1ffbe | 433 | /* Option -A is deprecated. Still available for compatibility. */ |
07855bec | 434 | if (arg != NULL && strcmp (arg, "esa") == 0) |
37a58793 | 435 | current_cpu = S390_OPCODE_G5; |
07855bec | 436 | else if (arg != NULL && strcmp (arg, "esame") == 0) |
37a58793 | 437 | current_cpu = S390_OPCODE_Z900; |
07855bec | 438 | else |
20203fb9 | 439 | as_bad (_("invalid architecture -A%s"), arg); |
07855bec NC |
440 | break; |
441 | ||
442 | /* -V: SVR4 argument to print version ID. */ | |
443 | case 'V': | |
444 | print_version_id (); | |
445 | break; | |
198ce79b | 446 | |
07855bec NC |
447 | /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section |
448 | should be emitted or not. FIXME: Not implemented. */ | |
449 | case 'Q': | |
450 | break; | |
198ce79b | 451 | |
07855bec NC |
452 | default: |
453 | return 0; | |
454 | } | |
198ce79b | 455 | |
a85d7ed0 NC |
456 | return 1; |
457 | } | |
458 | ||
459 | void | |
5a49b8ac | 460 | md_show_usage (FILE *stream) |
a85d7ed0 | 461 | { |
07855bec | 462 | fprintf (stream, _("\ |
16a419ba NC |
463 | S390 options:\n\ |
464 | -mregnames Allow symbolic names for registers\n\ | |
465 | -mwarn-areg-zero Warn about zero base/index registers\n\ | |
ff0fb565 MS |
466 | -mno-regnames Do not allow symbolic names for registers\n\ |
467 | -m31 Set file format to 31 bit format\n\ | |
468 | -m64 Set file format to 64 bit format\n")); | |
07855bec | 469 | fprintf (stream, _("\ |
16a419ba NC |
470 | -V print assembler version number\n\ |
471 | -Qy, -Qn ignored\n")); | |
a85d7ed0 NC |
472 | } |
473 | ||
902cc293 AK |
474 | /* Generate the hash table mapping mnemonics to struct s390_opcode. |
475 | This table is built at startup and whenever the CPU level is | |
476 | changed using .machine. */ | |
a85d7ed0 | 477 | |
902cc293 AK |
478 | static void |
479 | s390_setup_opcodes (void) | |
a85d7ed0 NC |
480 | { |
481 | register const struct s390_opcode *op; | |
482 | const struct s390_opcode *op_end; | |
b34976b6 | 483 | bfd_boolean dup_insn = FALSE; |
a85d7ed0 NC |
484 | const char *retval; |
485 | ||
902cc293 AK |
486 | if (s390_opcode_hash != NULL) |
487 | hash_die (s390_opcode_hash); | |
a85d7ed0 NC |
488 | |
489 | /* Insert the opcodes into a hash table. */ | |
490 | s390_opcode_hash = hash_new (); | |
491 | ||
492 | op_end = s390_opcodes + s390_num_opcodes; | |
07855bec | 493 | for (op = s390_opcodes; op < op_end; op++) |
e6181b6a MS |
494 | { |
495 | while (op < op_end - 1 && strcmp(op->name, op[1].name) == 0) | |
496 | { | |
497 | if (op->min_cpu <= current_cpu && (op->modes & current_mode_mask)) | |
498 | break; | |
933fbc29 | 499 | op++; |
e6181b6a | 500 | } |
be7a250d AK |
501 | |
502 | if (op->min_cpu <= current_cpu && (op->modes & current_mode_mask)) | |
503 | { | |
504 | retval = hash_insert (s390_opcode_hash, op->name, (void *) op); | |
505 | if (retval != (const char *) NULL) | |
506 | { | |
507 | as_bad (_("Internal assembler error for instruction %s"), | |
508 | op->name); | |
509 | dup_insn = TRUE; | |
510 | } | |
e6181b6a | 511 | } |
be7a250d | 512 | |
e6181b6a MS |
513 | while (op < op_end - 1 && strcmp (op->name, op[1].name) == 0) |
514 | op++; | |
933fbc29 | 515 | } |
07855bec | 516 | |
a85d7ed0 NC |
517 | if (dup_insn) |
518 | abort (); | |
902cc293 AK |
519 | } |
520 | ||
521 | /* This function is called when the assembler starts up. It is called | |
522 | after the options have been parsed and the output file has been | |
523 | opened. */ | |
524 | ||
525 | void | |
526 | md_begin (void) | |
527 | { | |
528 | register const struct s390_opcode *op; | |
529 | const struct s390_opcode *op_end; | |
902cc293 AK |
530 | const char *retval; |
531 | ||
532 | /* Give a warning if the combination -m64-bit and -Aesa is used. */ | |
533 | if (s390_arch_size == 64 && current_cpu < S390_OPCODE_Z900) | |
534 | as_warn (_("The 64 bit file format is used without esame instructions.")); | |
535 | ||
536 | s390_cie_data_alignment = -s390_arch_size / 8; | |
537 | ||
538 | /* Set the ELF flags if desired. */ | |
539 | if (s390_flags) | |
540 | bfd_set_private_flags (stdoutput, s390_flags); | |
541 | ||
542 | /* Insert the opcode formats into a hash table. */ | |
543 | s390_opformat_hash = hash_new (); | |
544 | ||
545 | op_end = s390_opformats + s390_num_opformats; | |
546 | for (op = s390_opformats; op < op_end; op++) | |
547 | { | |
548 | retval = hash_insert (s390_opformat_hash, op->name, (void *) op); | |
549 | if (retval != (const char *) NULL) | |
8e1adb8d NC |
550 | as_bad (_("Internal assembler error for instruction format %s"), |
551 | op->name); | |
902cc293 AK |
552 | } |
553 | ||
554 | s390_setup_opcodes (); | |
a85d7ed0 NC |
555 | |
556 | record_alignment (text_section, 2); | |
557 | record_alignment (data_section, 2); | |
558 | record_alignment (bss_section, 2); | |
a85d7ed0 NC |
559 | } |
560 | ||
561 | /* Called after all assembly has been done. */ | |
562 | void | |
5a49b8ac | 563 | s390_md_end (void) |
a85d7ed0 | 564 | { |
07855bec | 565 | if (s390_arch_size == 64) |
ff0fb565 | 566 | bfd_set_arch_mach (stdoutput, bfd_arch_s390, bfd_mach_s390_64); |
07855bec | 567 | else |
ff0fb565 | 568 | bfd_set_arch_mach (stdoutput, bfd_arch_s390, bfd_mach_s390_31); |
a85d7ed0 NC |
569 | } |
570 | ||
a85d7ed0 NC |
571 | /* Insert an operand value into an instruction. */ |
572 | ||
573 | static void | |
5a49b8ac AM |
574 | s390_insert_operand (unsigned char *insn, |
575 | const struct s390_operand *operand, | |
576 | offsetT val, | |
577 | char *file, | |
578 | unsigned int line) | |
a85d7ed0 NC |
579 | { |
580 | addressT uval; | |
581 | int offset; | |
582 | ||
07855bec NC |
583 | if (operand->flags & (S390_OPERAND_SIGNED|S390_OPERAND_PCREL)) |
584 | { | |
585 | offsetT min, max; | |
586 | ||
587 | max = ((offsetT) 1 << (operand->bits - 1)) - 1; | |
588 | min = - ((offsetT) 1 << (operand->bits - 1)); | |
589 | /* Halve PCREL operands. */ | |
590 | if (operand->flags & S390_OPERAND_PCREL) | |
591 | val >>= 1; | |
592 | /* Check for underflow / overflow. */ | |
593 | if (val < min || val > max) | |
594 | { | |
595 | const char *err = | |
20203fb9 | 596 | _("operand out of range (%s not between %ld and %ld)"); |
07855bec NC |
597 | char buf[100]; |
598 | ||
599 | if (operand->flags & S390_OPERAND_PCREL) | |
600 | { | |
601 | val <<= 1; | |
602 | min <<= 1; | |
603 | max <<= 1; | |
604 | } | |
605 | sprint_value (buf, val); | |
606 | if (file == (char *) NULL) | |
607 | as_bad (err, buf, (int) min, (int) max); | |
608 | else | |
609 | as_bad_where (file, line, err, buf, (int) min, (int) max); | |
610 | return; | |
611 | } | |
612 | /* val is ok, now restrict it to operand->bits bits. */ | |
613 | uval = (addressT) val & ((((addressT) 1 << (operand->bits-1)) << 1) - 1); | |
933fbc29 MS |
614 | /* val is restrict, now check for special case. */ |
615 | if (operand->bits == 20 && operand->shift == 20) | |
616 | uval = (uval >> 12) | ((uval & 0xfff) << 8); | |
a85d7ed0 | 617 | } |
07855bec NC |
618 | else |
619 | { | |
620 | addressT min, max; | |
198ce79b | 621 | |
98d3f06f | 622 | max = (((addressT) 1 << (operand->bits - 1)) << 1) - 1; |
07855bec NC |
623 | min = (offsetT) 0; |
624 | uval = (addressT) val; | |
625 | /* Length x in an instructions has real length x+1. */ | |
626 | if (operand->flags & S390_OPERAND_LENGTH) | |
627 | uval--; | |
628 | /* Check for underflow / overflow. */ | |
629 | if (uval < min || uval > max) | |
630 | { | |
07855bec NC |
631 | if (operand->flags & S390_OPERAND_LENGTH) |
632 | { | |
633 | uval++; | |
634 | min++; | |
635 | max++; | |
636 | } | |
e5976317 NC |
637 | |
638 | as_bad_value_out_of_range (_("operand"), uval, (offsetT) min, (offsetT) max, file, line); | |
639 | ||
07855bec NC |
640 | return; |
641 | } | |
a85d7ed0 | 642 | } |
a85d7ed0 NC |
643 | |
644 | /* Insert fragments of the operand byte for byte. */ | |
645 | offset = operand->shift + operand->bits; | |
646 | uval <<= (-offset) & 7; | |
98d3f06f | 647 | insn += (offset - 1) / 8; |
07855bec NC |
648 | while (uval != 0) |
649 | { | |
650 | *insn-- |= uval; | |
651 | uval >>= 8; | |
652 | } | |
a85d7ed0 NC |
653 | } |
654 | ||
1971b29d MS |
655 | struct map_tls |
656 | { | |
657 | char *string; | |
658 | int length; | |
659 | bfd_reloc_code_real_type reloc; | |
660 | }; | |
661 | ||
1971b29d MS |
662 | /* Parse tls marker and return the desired relocation. */ |
663 | static bfd_reloc_code_real_type | |
5a49b8ac | 664 | s390_tls_suffix (char **str_p, expressionS *exp_p) |
1971b29d MS |
665 | { |
666 | static struct map_tls mapping[] = | |
667 | { | |
668 | { "tls_load", 8, BFD_RELOC_390_TLS_LOAD }, | |
669 | { "tls_gdcall", 10, BFD_RELOC_390_TLS_GDCALL }, | |
670 | { "tls_ldcall", 10, BFD_RELOC_390_TLS_LDCALL }, | |
671 | { NULL, 0, BFD_RELOC_UNUSED } | |
672 | }; | |
673 | struct map_tls *ptr; | |
674 | char *orig_line; | |
675 | char *str; | |
676 | char *ident; | |
677 | int len; | |
678 | ||
679 | str = *str_p; | |
680 | if (*str++ != ':') | |
681 | return BFD_RELOC_UNUSED; | |
682 | ||
683 | ident = str; | |
684 | while (ISIDNUM (*str)) | |
685 | str++; | |
686 | len = str - ident; | |
687 | if (*str++ != ':') | |
688 | return BFD_RELOC_UNUSED; | |
689 | ||
690 | orig_line = input_line_pointer; | |
691 | input_line_pointer = str; | |
692 | expression (exp_p); | |
693 | str = input_line_pointer; | |
694 | if (&input_line_pointer != str_p) | |
695 | input_line_pointer = orig_line; | |
696 | ||
697 | if (exp_p->X_op != O_symbol) | |
698 | return BFD_RELOC_UNUSED; | |
699 | ||
700 | for (ptr = &mapping[0]; ptr->length > 0; ptr++) | |
701 | if (len == ptr->length | |
702 | && strncasecmp (ident, ptr->string, ptr->length) == 0) | |
703 | { | |
704 | /* Found a matching tls suffix. */ | |
705 | *str_p = str; | |
706 | return ptr->reloc; | |
707 | } | |
708 | return BFD_RELOC_UNUSED; | |
709 | } | |
710 | ||
a85d7ed0 | 711 | /* Structure used to hold suffixes. */ |
07855bec NC |
712 | typedef enum |
713 | { | |
714 | ELF_SUFFIX_NONE = 0, | |
715 | ELF_SUFFIX_GOT, | |
716 | ELF_SUFFIX_PLT, | |
2a19f73f MS |
717 | ELF_SUFFIX_GOTENT, |
718 | ELF_SUFFIX_GOTOFF, | |
719 | ELF_SUFFIX_GOTPLT, | |
1971b29d MS |
720 | ELF_SUFFIX_PLTOFF, |
721 | ELF_SUFFIX_TLS_GD, | |
722 | ELF_SUFFIX_TLS_GOTIE, | |
723 | ELF_SUFFIX_TLS_IE, | |
724 | ELF_SUFFIX_TLS_LDM, | |
725 | ELF_SUFFIX_TLS_LDO, | |
726 | ELF_SUFFIX_TLS_LE | |
07855bec NC |
727 | } |
728 | elf_suffix_type; | |
729 | ||
730 | struct map_bfd | |
731 | { | |
732 | char *string; | |
733 | int length; | |
734 | elf_suffix_type suffix; | |
735 | }; | |
a85d7ed0 | 736 | |
9d654c1c | 737 | |
a85d7ed0 NC |
738 | /* Parse @got/@plt/@gotoff. and return the desired relocation. */ |
739 | static elf_suffix_type | |
5a49b8ac | 740 | s390_elf_suffix (char **str_p, expressionS *exp_p) |
a85d7ed0 | 741 | { |
07855bec NC |
742 | static struct map_bfd mapping[] = |
743 | { | |
a85d7ed0 NC |
744 | { "got", 3, ELF_SUFFIX_GOT }, |
745 | { "got12", 5, ELF_SUFFIX_GOT }, | |
746 | { "plt", 3, ELF_SUFFIX_PLT }, | |
747 | { "gotent", 6, ELF_SUFFIX_GOTENT }, | |
2a19f73f MS |
748 | { "gotoff", 6, ELF_SUFFIX_GOTOFF }, |
749 | { "gotplt", 6, ELF_SUFFIX_GOTPLT }, | |
750 | { "pltoff", 6, ELF_SUFFIX_PLTOFF }, | |
1971b29d MS |
751 | { "tlsgd", 5, ELF_SUFFIX_TLS_GD }, |
752 | { "gotntpoff", 9, ELF_SUFFIX_TLS_GOTIE }, | |
753 | { "indntpoff", 9, ELF_SUFFIX_TLS_IE }, | |
754 | { "tlsldm", 6, ELF_SUFFIX_TLS_LDM }, | |
755 | { "dtpoff", 6, ELF_SUFFIX_TLS_LDO }, | |
756 | { "ntpoff", 6, ELF_SUFFIX_TLS_LE }, | |
a85d7ed0 NC |
757 | { NULL, 0, ELF_SUFFIX_NONE } |
758 | }; | |
759 | ||
760 | struct map_bfd *ptr; | |
761 | char *str = *str_p; | |
762 | char *ident; | |
763 | int len; | |
764 | ||
765 | if (*str++ != '@') | |
766 | return ELF_SUFFIX_NONE; | |
767 | ||
768 | ident = str; | |
3882b010 | 769 | while (ISALNUM (*str)) |
a85d7ed0 NC |
770 | str++; |
771 | len = str - ident; | |
772 | ||
773 | for (ptr = &mapping[0]; ptr->length > 0; ptr++) | |
16a419ba NC |
774 | if (len == ptr->length |
775 | && strncasecmp (ident, ptr->string, ptr->length) == 0) | |
07855bec NC |
776 | { |
777 | if (exp_p->X_add_number != 0) | |
778 | as_warn (_("identifier+constant@%s means identifier@%s+constant"), | |
779 | ptr->string, ptr->string); | |
780 | /* Now check for identifier@suffix+constant. */ | |
781 | if (*str == '-' || *str == '+') | |
782 | { | |
783 | char *orig_line = input_line_pointer; | |
784 | expressionS new_exp; | |
785 | ||
786 | input_line_pointer = str; | |
787 | expression (&new_exp); | |
788 | ||
789 | switch (new_exp.X_op) | |
790 | { | |
791 | case O_constant: /* X_add_number (a constant expression). */ | |
792 | exp_p->X_add_number += new_exp.X_add_number; | |
793 | str = input_line_pointer; | |
794 | break; | |
795 | case O_symbol: /* X_add_symbol + X_add_number. */ | |
796 | /* this case is used for e.g. xyz@PLT+.Label. */ | |
797 | exp_p->X_add_number += new_exp.X_add_number; | |
798 | exp_p->X_op_symbol = new_exp.X_add_symbol; | |
799 | exp_p->X_op = O_add; | |
800 | str = input_line_pointer; | |
801 | break; | |
802 | case O_uminus: /* (- X_add_symbol) + X_add_number. */ | |
803 | /* this case is used for e.g. xyz@PLT-.Label. */ | |
804 | exp_p->X_add_number += new_exp.X_add_number; | |
805 | exp_p->X_op_symbol = new_exp.X_add_symbol; | |
806 | exp_p->X_op = O_subtract; | |
807 | str = input_line_pointer; | |
808 | break; | |
809 | default: | |
810 | break; | |
811 | } | |
812 | ||
813 | /* If s390_elf_suffix has not been called with | |
814 | &input_line_pointer as first parameter, we have | |
815 | clobbered the input_line_pointer. We have to | |
816 | undo that. */ | |
817 | if (&input_line_pointer != str_p) | |
818 | input_line_pointer = orig_line; | |
a85d7ed0 | 819 | } |
07855bec NC |
820 | *str_p = str; |
821 | return ptr->suffix; | |
a85d7ed0 | 822 | } |
a85d7ed0 NC |
823 | |
824 | return BFD_RELOC_UNUSED; | |
825 | } | |
826 | ||
827 | /* Structure used to hold a literal pool entry. */ | |
07855bec NC |
828 | struct s390_lpe |
829 | { | |
830 | struct s390_lpe *next; | |
831 | expressionS ex; | |
832 | FLONUM_TYPE floatnum; /* used if X_op == O_big && X_add_number <= 0 */ | |
833 | LITTLENUM_TYPE bignum[4]; /* used if X_op == O_big && X_add_number > 0 */ | |
834 | int nbytes; | |
835 | bfd_reloc_code_real_type reloc; | |
836 | symbolS *sym; | |
837 | }; | |
a85d7ed0 NC |
838 | |
839 | static struct s390_lpe *lpe_free_list = NULL; | |
840 | static struct s390_lpe *lpe_list = NULL; | |
841 | static struct s390_lpe *lpe_list_tail = NULL; | |
842 | static symbolS *lp_sym = NULL; | |
843 | static int lp_count = 0; | |
844 | static int lpe_count = 0; | |
845 | ||
846 | static int | |
5a49b8ac | 847 | s390_exp_compare (expressionS *exp1, expressionS *exp2) |
a85d7ed0 NC |
848 | { |
849 | if (exp1->X_op != exp2->X_op) | |
850 | return 0; | |
851 | ||
07855bec NC |
852 | switch (exp1->X_op) |
853 | { | |
854 | case O_constant: /* X_add_number must be equal. */ | |
855 | case O_register: | |
856 | return exp1->X_add_number == exp2->X_add_number; | |
857 | ||
858 | case O_big: | |
198ce79b | 859 | as_bad (_("Can't handle O_big in s390_exp_compare")); |
07855bec NC |
860 | |
861 | case O_symbol: /* X_add_symbol & X_add_number must be equal. */ | |
862 | case O_symbol_rva: | |
863 | case O_uminus: | |
864 | case O_bit_not: | |
865 | case O_logical_not: | |
16a419ba NC |
866 | return (exp1->X_add_symbol == exp2->X_add_symbol) |
867 | && (exp1->X_add_number == exp2->X_add_number); | |
07855bec NC |
868 | |
869 | case O_multiply: /* X_add_symbol,X_op_symbol&X_add_number must be equal. */ | |
870 | case O_divide: | |
871 | case O_modulus: | |
872 | case O_left_shift: | |
873 | case O_right_shift: | |
874 | case O_bit_inclusive_or: | |
875 | case O_bit_or_not: | |
876 | case O_bit_exclusive_or: | |
877 | case O_bit_and: | |
878 | case O_add: | |
879 | case O_subtract: | |
880 | case O_eq: | |
881 | case O_ne: | |
882 | case O_lt: | |
883 | case O_le: | |
884 | case O_ge: | |
885 | case O_gt: | |
886 | case O_logical_and: | |
887 | case O_logical_or: | |
16a419ba NC |
888 | return (exp1->X_add_symbol == exp2->X_add_symbol) |
889 | && (exp1->X_op_symbol == exp2->X_op_symbol) | |
890 | && (exp1->X_add_number == exp2->X_add_number); | |
07855bec | 891 | default: |
98d3f06f KH |
892 | return 0; |
893 | } | |
a85d7ed0 NC |
894 | } |
895 | ||
896 | /* Test for @lit and if its present make an entry in the literal pool and | |
897 | modify the current expression to be an offset into the literal pool. */ | |
898 | static elf_suffix_type | |
5a49b8ac | 899 | s390_lit_suffix (char **str_p, expressionS *exp_p, elf_suffix_type suffix) |
a85d7ed0 NC |
900 | { |
901 | bfd_reloc_code_real_type reloc; | |
902 | char tmp_name[64]; | |
903 | char *str = *str_p; | |
904 | char *ident; | |
905 | struct s390_lpe *lpe; | |
906 | int nbytes, len; | |
907 | ||
908 | if (*str++ != ':') | |
909 | return suffix; /* No modification. */ | |
198ce79b | 910 | |
a85d7ed0 NC |
911 | /* We look for a suffix of the form "@lit1", "@lit2", "@lit4" or "@lit8". */ |
912 | ident = str; | |
3882b010 | 913 | while (ISALNUM (*str)) |
a85d7ed0 NC |
914 | str++; |
915 | len = str - ident; | |
16a419ba NC |
916 | if (len != 4 || strncasecmp (ident, "lit", 3) != 0 |
917 | || (ident[3]!='1' && ident[3]!='2' && ident[3]!='4' && ident[3]!='8')) | |
a85d7ed0 NC |
918 | return suffix; /* no modification */ |
919 | nbytes = ident[3] - '0'; | |
920 | ||
921 | reloc = BFD_RELOC_UNUSED; | |
07855bec NC |
922 | if (suffix == ELF_SUFFIX_GOT) |
923 | { | |
924 | if (nbytes == 2) | |
925 | reloc = BFD_RELOC_390_GOT16; | |
926 | else if (nbytes == 4) | |
927 | reloc = BFD_RELOC_32_GOT_PCREL; | |
928 | else if (nbytes == 8) | |
929 | reloc = BFD_RELOC_390_GOT64; | |
930 | } | |
931 | else if (suffix == ELF_SUFFIX_PLT) | |
932 | { | |
933 | if (nbytes == 4) | |
934 | reloc = BFD_RELOC_390_PLT32; | |
935 | else if (nbytes == 8) | |
936 | reloc = BFD_RELOC_390_PLT64; | |
937 | } | |
a85d7ed0 | 938 | |
07855bec | 939 | if (suffix != ELF_SUFFIX_NONE && reloc == BFD_RELOC_UNUSED) |
a85d7ed0 | 940 | as_bad (_("Invalid suffix for literal pool entry")); |
a85d7ed0 NC |
941 | |
942 | /* Search the pool if the new entry is a duplicate. */ | |
07855bec NC |
943 | if (exp_p->X_op == O_big) |
944 | { | |
945 | /* Special processing for big numbers. */ | |
946 | for (lpe = lpe_list; lpe != NULL; lpe = lpe->next) | |
947 | { | |
948 | if (lpe->ex.X_op == O_big) | |
949 | { | |
950 | if (exp_p->X_add_number <= 0 && lpe->ex.X_add_number <= 0) | |
951 | { | |
952 | if (memcmp (&generic_floating_point_number, &lpe->floatnum, | |
953 | sizeof (FLONUM_TYPE)) == 0) | |
954 | break; | |
955 | } | |
956 | else if (exp_p->X_add_number == lpe->ex.X_add_number) | |
957 | { | |
958 | if (memcmp (generic_bignum, lpe->bignum, | |
959 | sizeof (LITTLENUM_TYPE)*exp_p->X_add_number) == 0) | |
960 | break; | |
961 | } | |
962 | } | |
963 | } | |
a85d7ed0 | 964 | } |
07855bec NC |
965 | else |
966 | { | |
967 | /* Processing for 'normal' data types. */ | |
968 | for (lpe = lpe_list; lpe != NULL; lpe = lpe->next) | |
16a419ba | 969 | if (lpe->nbytes == nbytes && lpe->reloc == reloc |
98d3f06f | 970 | && s390_exp_compare (exp_p, &lpe->ex) != 0) |
07855bec | 971 | break; |
a85d7ed0 | 972 | } |
07855bec NC |
973 | |
974 | if (lpe == NULL) | |
975 | { | |
976 | /* A new literal. */ | |
977 | if (lpe_free_list != NULL) | |
978 | { | |
979 | lpe = lpe_free_list; | |
980 | lpe_free_list = lpe_free_list->next; | |
981 | } | |
a85d7ed0 | 982 | else |
07855bec | 983 | { |
98d3f06f | 984 | lpe = (struct s390_lpe *) xmalloc (sizeof (struct s390_lpe)); |
07855bec NC |
985 | } |
986 | ||
987 | lpe->ex = *exp_p; | |
988 | ||
989 | if (exp_p->X_op == O_big) | |
990 | { | |
991 | if (exp_p->X_add_number <= 0) | |
992 | lpe->floatnum = generic_floating_point_number; | |
993 | else if (exp_p->X_add_number <= 4) | |
994 | memcpy (lpe->bignum, generic_bignum, | |
98d3f06f | 995 | exp_p->X_add_number * sizeof (LITTLENUM_TYPE)); |
07855bec NC |
996 | else |
997 | as_bad (_("Big number is too big")); | |
998 | } | |
999 | ||
1000 | lpe->nbytes = nbytes; | |
1001 | lpe->reloc = reloc; | |
1002 | /* Literal pool name defined ? */ | |
1003 | if (lp_sym == NULL) | |
1004 | { | |
07726851 | 1005 | sprintf (tmp_name, ".L\001%i", lp_count); |
98d3f06f | 1006 | lp_sym = symbol_make (tmp_name); |
07855bec | 1007 | } |
a85d7ed0 | 1008 | |
07855bec | 1009 | /* Make name for literal pool entry. */ |
07726851 | 1010 | sprintf (tmp_name, ".L\001%i\002%i", lp_count, lpe_count); |
07855bec | 1011 | lpe_count++; |
98d3f06f | 1012 | lpe->sym = symbol_make (tmp_name); |
07855bec NC |
1013 | |
1014 | /* Add to literal pool list. */ | |
1015 | lpe->next = NULL; | |
1016 | if (lpe_list_tail != NULL) | |
1017 | { | |
1018 | lpe_list_tail->next = lpe; | |
1019 | lpe_list_tail = lpe; | |
1020 | } | |
1021 | else | |
1022 | lpe_list = lpe_list_tail = lpe; | |
1023 | } | |
198ce79b | 1024 | |
a85d7ed0 NC |
1025 | /* Now change exp_p to the offset into the literal pool. |
1026 | Thats the expression: .L^Ax^By-.L^Ax */ | |
1027 | exp_p->X_add_symbol = lpe->sym; | |
1028 | exp_p->X_op_symbol = lp_sym; | |
1029 | exp_p->X_op = O_subtract; | |
1030 | exp_p->X_add_number = 0; | |
1031 | ||
1032 | *str_p = str; | |
1033 | ||
1034 | /* We change the suffix type to ELF_SUFFIX_NONE, because | |
1035 | the difference of two local labels is just a number. */ | |
1036 | return ELF_SUFFIX_NONE; | |
1037 | } | |
1038 | ||
1039 | /* Like normal .long/.short/.word, except support @got, etc. | |
1040 | clobbers input_line_pointer, checks end-of-line. */ | |
1041 | static void | |
5a49b8ac | 1042 | s390_elf_cons (int nbytes /* 1=.byte, 2=.word, 4=.long */) |
a85d7ed0 NC |
1043 | { |
1044 | expressionS exp; | |
1045 | elf_suffix_type suffix; | |
1046 | ||
07855bec NC |
1047 | if (is_it_end_of_statement ()) |
1048 | { | |
1049 | demand_empty_rest_of_line (); | |
1050 | return; | |
1051 | } | |
a85d7ed0 | 1052 | |
07855bec NC |
1053 | do |
1054 | { | |
1055 | expression (&exp); | |
1056 | ||
1057 | if (exp.X_op == O_symbol | |
1058 | && *input_line_pointer == '@' | |
1059 | && (suffix = s390_elf_suffix (&input_line_pointer, &exp)) != ELF_SUFFIX_NONE) | |
1060 | { | |
1061 | bfd_reloc_code_real_type reloc; | |
1062 | reloc_howto_type *reloc_howto; | |
1063 | int size; | |
1064 | char *where; | |
1065 | ||
1971b29d MS |
1066 | if (nbytes == 2) |
1067 | { | |
1068 | static bfd_reloc_code_real_type tab2[] = | |
1069 | { | |
5cfbfc2b MS |
1070 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_NONE */ |
1071 | BFD_RELOC_390_GOT16, /* ELF_SUFFIX_GOT */ | |
1072 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_PLT */ | |
1073 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTENT */ | |
1074 | BFD_RELOC_16_GOTOFF, /* ELF_SUFFIX_GOTOFF */ | |
1075 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTPLT */ | |
1076 | BFD_RELOC_390_PLTOFF16, /* ELF_SUFFIX_PLTOFF */ | |
1077 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_GD */ | |
1078 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_GOTIE */ | |
1079 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_IE */ | |
1080 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_LDM */ | |
1081 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_LDO */ | |
1082 | BFD_RELOC_UNUSED /* ELF_SUFFIX_TLS_LE */ | |
1971b29d MS |
1083 | }; |
1084 | reloc = tab2[suffix]; | |
1085 | } | |
1086 | else if (nbytes == 4) | |
1087 | { | |
1088 | static bfd_reloc_code_real_type tab4[] = | |
1089 | { | |
5cfbfc2b MS |
1090 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_NONE */ |
1091 | BFD_RELOC_32_GOT_PCREL, /* ELF_SUFFIX_GOT */ | |
1092 | BFD_RELOC_390_PLT32, /* ELF_SUFFIX_PLT */ | |
1093 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTENT */ | |
1094 | BFD_RELOC_32_GOTOFF, /* ELF_SUFFIX_GOTOFF */ | |
1095 | BFD_RELOC_390_GOTPLT32, /* ELF_SUFFIX_GOTPLT */ | |
1096 | BFD_RELOC_390_PLTOFF32, /* ELF_SUFFIX_PLTOFF */ | |
1097 | BFD_RELOC_390_TLS_GD32, /* ELF_SUFFIX_TLS_GD */ | |
1098 | BFD_RELOC_390_TLS_GOTIE32, /* ELF_SUFFIX_TLS_GOTIE */ | |
1099 | BFD_RELOC_390_TLS_IE32, /* ELF_SUFFIX_TLS_IE */ | |
1100 | BFD_RELOC_390_TLS_LDM32, /* ELF_SUFFIX_TLS_LDM */ | |
1101 | BFD_RELOC_390_TLS_LDO32, /* ELF_SUFFIX_TLS_LDO */ | |
1102 | BFD_RELOC_390_TLS_LE32 /* ELF_SUFFIX_TLS_LE */ | |
1971b29d MS |
1103 | }; |
1104 | reloc = tab4[suffix]; | |
1105 | } | |
1106 | else if (nbytes == 8) | |
1107 | { | |
1108 | static bfd_reloc_code_real_type tab8[] = | |
1109 | { | |
5cfbfc2b MS |
1110 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_NONE */ |
1111 | BFD_RELOC_390_GOT64, /* ELF_SUFFIX_GOT */ | |
1112 | BFD_RELOC_390_PLT64, /* ELF_SUFFIX_PLT */ | |
1113 | BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTENT */ | |
1114 | BFD_RELOC_390_GOTOFF64, /* ELF_SUFFIX_GOTOFF */ | |
1115 | BFD_RELOC_390_GOTPLT64, /* ELF_SUFFIX_GOTPLT */ | |
1116 | BFD_RELOC_390_PLTOFF64, /* ELF_SUFFIX_PLTOFF */ | |
1117 | BFD_RELOC_390_TLS_GD64, /* ELF_SUFFIX_TLS_GD */ | |
1118 | BFD_RELOC_390_TLS_GOTIE64, /* ELF_SUFFIX_TLS_GOTIE */ | |
1119 | BFD_RELOC_390_TLS_IE64, /* ELF_SUFFIX_TLS_IE */ | |
1120 | BFD_RELOC_390_TLS_LDM64, /* ELF_SUFFIX_TLS_LDM */ | |
1121 | BFD_RELOC_390_TLS_LDO64, /* ELF_SUFFIX_TLS_LDO */ | |
1122 | BFD_RELOC_390_TLS_LE64 /* ELF_SUFFIX_TLS_LE */ | |
1971b29d MS |
1123 | }; |
1124 | reloc = tab8[suffix]; | |
1125 | } | |
07855bec NC |
1126 | else |
1127 | reloc = BFD_RELOC_UNUSED; | |
1128 | ||
1971b29d MS |
1129 | if (reloc != BFD_RELOC_UNUSED |
1130 | && (reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc))) | |
07855bec | 1131 | { |
07855bec NC |
1132 | size = bfd_get_reloc_size (reloc_howto); |
1133 | if (size > nbytes) | |
1134 | as_bad (_("%s relocations do not fit in %d bytes"), | |
1135 | reloc_howto->name, nbytes); | |
07726851 | 1136 | where = frag_more (nbytes); |
07855bec | 1137 | md_number_to_chars (where, 0, size); |
198ce79b | 1138 | /* To make fixup_segment do the pc relative conversion the |
b34976b6 | 1139 | pcrel parameter on the fix_new_exp call needs to be FALSE. */ |
198ce79b | 1140 | fix_new_exp (frag_now, where - frag_now->fr_literal, |
b34976b6 | 1141 | size, &exp, FALSE, reloc); |
07855bec NC |
1142 | } |
1143 | else | |
1144 | as_bad (_("relocation not applicable")); | |
1145 | } | |
a85d7ed0 | 1146 | else |
07855bec NC |
1147 | emit_expr (&exp, (unsigned int) nbytes); |
1148 | } | |
1149 | while (*input_line_pointer++ == ','); | |
a85d7ed0 | 1150 | |
98d3f06f | 1151 | input_line_pointer--; /* Put terminator back into stream. */ |
a85d7ed0 NC |
1152 | demand_empty_rest_of_line (); |
1153 | } | |
1154 | ||
1155 | /* We need to keep a list of fixups. We can't simply generate them as | |
1156 | we go, because that would require us to first create the frag, and | |
1157 | that would screw up references to ``.''. */ | |
1158 | ||
1159 | struct s390_fixup | |
07855bec NC |
1160 | { |
1161 | expressionS exp; | |
1162 | int opindex; | |
1163 | bfd_reloc_code_real_type reloc; | |
1164 | }; | |
a85d7ed0 NC |
1165 | |
1166 | #define MAX_INSN_FIXUPS (4) | |
1167 | ||
1168 | /* This routine is called for each instruction to be assembled. */ | |
1169 | ||
9d654c1c | 1170 | static char * |
5a49b8ac AM |
1171 | md_gather_operands (char *str, |
1172 | unsigned char *insn, | |
1173 | const struct s390_opcode *opcode) | |
a85d7ed0 NC |
1174 | { |
1175 | struct s390_fixup fixups[MAX_INSN_FIXUPS]; | |
1176 | const struct s390_operand *operand; | |
1177 | const unsigned char *opindex_ptr; | |
1971b29d | 1178 | expressionS ex; |
a85d7ed0 NC |
1179 | elf_suffix_type suffix; |
1180 | bfd_reloc_code_real_type reloc; | |
1181 | int skip_optional; | |
a85d7ed0 NC |
1182 | char *f; |
1183 | int fc, i; | |
1184 | ||
98d3f06f KH |
1185 | while (ISSPACE (*str)) |
1186 | str++; | |
a85d7ed0 | 1187 | |
a85d7ed0 NC |
1188 | skip_optional = 0; |
1189 | ||
1190 | /* Gather the operands. */ | |
1191 | fc = 0; | |
07855bec NC |
1192 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) |
1193 | { | |
07855bec NC |
1194 | char *hold; |
1195 | ||
1196 | operand = s390_operands + *opindex_ptr; | |
198ce79b | 1197 | |
07855bec NC |
1198 | if (skip_optional && (operand->flags & S390_OPERAND_INDEX)) |
1199 | { | |
1200 | /* We do an early skip. For D(X,B) constructions the index | |
198ce79b | 1201 | register is skipped (X is optional). For D(L,B) the base |
07855bec NC |
1202 | register will be the skipped operand, because L is NOT |
1203 | optional. */ | |
1204 | skip_optional = 0; | |
1205 | continue; | |
1206 | } | |
198ce79b | 1207 | |
07855bec NC |
1208 | /* Gather the operand. */ |
1209 | hold = input_line_pointer; | |
1210 | input_line_pointer = str; | |
1211 | ||
98d3f06f KH |
1212 | /* Parse the operand. */ |
1213 | if (! register_name (&ex)) | |
07855bec | 1214 | expression (&ex); |
198ce79b | 1215 | |
07855bec NC |
1216 | str = input_line_pointer; |
1217 | input_line_pointer = hold; | |
198ce79b | 1218 | |
07855bec NC |
1219 | /* Write the operand to the insn. */ |
1220 | if (ex.X_op == O_illegal) | |
1221 | as_bad (_("illegal operand")); | |
1222 | else if (ex.X_op == O_absent) | |
5e7c27a6 MS |
1223 | { |
1224 | /* No operands, check if all operands can be skipped. */ | |
1225 | while (*opindex_ptr != 0 && operand->flags & S390_OPERAND_OPTIONAL) | |
1226 | { | |
1227 | if (operand->flags & S390_OPERAND_DISP) | |
1228 | { | |
1229 | /* An optional displacement makes the whole D(X,B) | |
1230 | D(L,B) or D(B) block optional. */ | |
1231 | do { | |
1232 | operand = s390_operands + *(++opindex_ptr); | |
1233 | } while (!(operand->flags & S390_OPERAND_BASE)); | |
1234 | } | |
1235 | operand = s390_operands + *(++opindex_ptr); | |
1236 | } | |
1237 | if (opindex_ptr[0] == '\0') | |
1238 | break; | |
1239 | as_bad (_("missing operand")); | |
1240 | } | |
07855bec NC |
1241 | else if (ex.X_op == O_register || ex.X_op == O_constant) |
1242 | { | |
1243 | s390_lit_suffix (&str, &ex, ELF_SUFFIX_NONE); | |
1244 | ||
1245 | if (ex.X_op != O_register && ex.X_op != O_constant) | |
1246 | { | |
1247 | /* We need to generate a fixup for the | |
1248 | expression returned by s390_lit_suffix. */ | |
1249 | if (fc >= MAX_INSN_FIXUPS) | |
1250 | as_fatal (_("too many fixups")); | |
1251 | fixups[fc].exp = ex; | |
1252 | fixups[fc].opindex = *opindex_ptr; | |
1253 | fixups[fc].reloc = BFD_RELOC_UNUSED; | |
1254 | ++fc; | |
1255 | } | |
1256 | else | |
1257 | { | |
16a419ba NC |
1258 | if ((operand->flags & S390_OPERAND_INDEX) |
1259 | && ex.X_add_number == 0 | |
b34976b6 | 1260 | && warn_areg_zero) |
20203fb9 | 1261 | as_warn (_("index register specified but zero")); |
16a419ba NC |
1262 | if ((operand->flags & S390_OPERAND_BASE) |
1263 | && ex.X_add_number == 0 | |
b34976b6 | 1264 | && warn_areg_zero) |
20203fb9 | 1265 | as_warn (_("base register specified but zero")); |
c8fa16ed AK |
1266 | if ((operand->flags & S390_OPERAND_GPR) |
1267 | && (operand->flags & S390_OPERAND_REG_PAIR) | |
5e4b319c | 1268 | && (ex.X_add_number & 1)) |
c8fa16ed AK |
1269 | as_fatal (_("odd numbered general purpose register specified as " |
1270 | "register pair")); | |
1271 | if ((operand->flags & S390_OPERAND_FPR) | |
1272 | && (operand->flags & S390_OPERAND_REG_PAIR) | |
1273 | && ex.X_add_number != 0 && ex.X_add_number != 1 | |
1274 | && ex.X_add_number != 4 && ex.X_add_number != 5 | |
1275 | && ex.X_add_number != 8 && ex.X_add_number != 9 | |
1276 | && ex.X_add_number != 12 && ex.X_add_number != 13) | |
1277 | as_fatal (_("invalid floating point register pair. Valid fp " | |
1278 | "register pair operands are 0, 1, 4, 5, 8, 9, " | |
1279 | "12 or 13.")); | |
07855bec NC |
1280 | s390_insert_operand (insn, operand, ex.X_add_number, NULL, 0); |
1281 | } | |
1282 | } | |
1283 | else | |
1284 | { | |
1285 | suffix = s390_elf_suffix (&str, &ex); | |
1286 | suffix = s390_lit_suffix (&str, &ex, suffix); | |
1287 | reloc = BFD_RELOC_UNUSED; | |
1288 | ||
1289 | if (suffix == ELF_SUFFIX_GOT) | |
1290 | { | |
933fbc29 MS |
1291 | if ((operand->flags & S390_OPERAND_DISP) && |
1292 | (operand->bits == 12)) | |
07855bec | 1293 | reloc = BFD_RELOC_390_GOT12; |
933fbc29 MS |
1294 | else if ((operand->flags & S390_OPERAND_DISP) && |
1295 | (operand->bits == 20)) | |
1296 | reloc = BFD_RELOC_390_GOT20; | |
16a419ba NC |
1297 | else if ((operand->flags & S390_OPERAND_SIGNED) |
1298 | && (operand->bits == 16)) | |
07855bec | 1299 | reloc = BFD_RELOC_390_GOT16; |
16a419ba NC |
1300 | else if ((operand->flags & S390_OPERAND_PCREL) |
1301 | && (operand->bits == 32)) | |
07855bec NC |
1302 | reloc = BFD_RELOC_390_GOTENT; |
1303 | } | |
1304 | else if (suffix == ELF_SUFFIX_PLT) | |
1305 | { | |
16a419ba NC |
1306 | if ((operand->flags & S390_OPERAND_PCREL) |
1307 | && (operand->bits == 16)) | |
07855bec | 1308 | reloc = BFD_RELOC_390_PLT16DBL; |
16a419ba NC |
1309 | else if ((operand->flags & S390_OPERAND_PCREL) |
1310 | && (operand->bits == 32)) | |
07855bec NC |
1311 | reloc = BFD_RELOC_390_PLT32DBL; |
1312 | } | |
1313 | else if (suffix == ELF_SUFFIX_GOTENT) | |
1314 | { | |
16a419ba NC |
1315 | if ((operand->flags & S390_OPERAND_PCREL) |
1316 | && (operand->bits == 32)) | |
07855bec NC |
1317 | reloc = BFD_RELOC_390_GOTENT; |
1318 | } | |
2a19f73f MS |
1319 | else if (suffix == ELF_SUFFIX_GOTOFF) |
1320 | { | |
1321 | if ((operand->flags & S390_OPERAND_SIGNED) | |
1322 | && (operand->bits == 16)) | |
1323 | reloc = BFD_RELOC_16_GOTOFF; | |
1324 | } | |
1325 | else if (suffix == ELF_SUFFIX_PLTOFF) | |
1326 | { | |
1327 | if ((operand->flags & S390_OPERAND_SIGNED) | |
1328 | && (operand->bits == 16)) | |
1329 | reloc = BFD_RELOC_390_PLTOFF16; | |
1330 | } | |
1331 | else if (suffix == ELF_SUFFIX_GOTPLT) | |
1332 | { | |
1333 | if ((operand->flags & S390_OPERAND_DISP) | |
1334 | && (operand->bits == 12)) | |
1335 | reloc = BFD_RELOC_390_GOTPLT12; | |
1336 | else if ((operand->flags & S390_OPERAND_SIGNED) | |
1337 | && (operand->bits == 16)) | |
1338 | reloc = BFD_RELOC_390_GOTPLT16; | |
1339 | else if ((operand->flags & S390_OPERAND_PCREL) | |
1340 | && (operand->bits == 32)) | |
1341 | reloc = BFD_RELOC_390_GOTPLTENT; | |
1342 | } | |
1971b29d MS |
1343 | else if (suffix == ELF_SUFFIX_TLS_GOTIE) |
1344 | { | |
1345 | if ((operand->flags & S390_OPERAND_DISP) | |
1346 | && (operand->bits == 12)) | |
1347 | reloc = BFD_RELOC_390_TLS_GOTIE12; | |
933fbc29 MS |
1348 | else if ((operand->flags & S390_OPERAND_DISP) |
1349 | && (operand->bits == 20)) | |
1350 | reloc = BFD_RELOC_390_TLS_GOTIE20; | |
1971b29d MS |
1351 | } |
1352 | else if (suffix == ELF_SUFFIX_TLS_IE) | |
1353 | { | |
1354 | if ((operand->flags & S390_OPERAND_PCREL) | |
1355 | && (operand->bits == 32)) | |
1356 | reloc = BFD_RELOC_390_TLS_IEENT; | |
1357 | } | |
07855bec NC |
1358 | |
1359 | if (suffix != ELF_SUFFIX_NONE && reloc == BFD_RELOC_UNUSED) | |
1360 | as_bad (_("invalid operand suffix")); | |
1361 | /* We need to generate a fixup of type 'reloc' for this | |
1362 | expression. */ | |
a85d7ed0 NC |
1363 | if (fc >= MAX_INSN_FIXUPS) |
1364 | as_fatal (_("too many fixups")); | |
1365 | fixups[fc].exp = ex; | |
1366 | fixups[fc].opindex = *opindex_ptr; | |
07855bec | 1367 | fixups[fc].reloc = reloc; |
a85d7ed0 | 1368 | ++fc; |
07855bec | 1369 | } |
198ce79b | 1370 | |
07855bec NC |
1371 | /* Check the next character. The call to expression has advanced |
1372 | str past any whitespace. */ | |
1373 | if (operand->flags & S390_OPERAND_DISP) | |
1374 | { | |
1375 | /* After a displacement a block in parentheses can start. */ | |
1376 | if (*str != '(') | |
1377 | { | |
67c1ffbe | 1378 | /* Check if parenthesized block can be skipped. If the next |
07855bec NC |
1379 | operand is neiter an optional operand nor a base register |
1380 | then we have a syntax error. */ | |
1381 | operand = s390_operands + *(++opindex_ptr); | |
1382 | if (!(operand->flags & (S390_OPERAND_INDEX|S390_OPERAND_BASE))) | |
1383 | as_bad (_("syntax error; missing '(' after displacement")); | |
1384 | ||
1385 | /* Ok, skip all operands until S390_OPERAND_BASE. */ | |
1386 | while (!(operand->flags & S390_OPERAND_BASE)) | |
1387 | operand = s390_operands + *(++opindex_ptr); | |
198ce79b | 1388 | |
67c1ffbe | 1389 | /* If there is a next operand it must be separated by a comma. */ |
07855bec NC |
1390 | if (opindex_ptr[1] != '\0') |
1391 | { | |
6c639ef9 MS |
1392 | if (*str != ',') |
1393 | { | |
1394 | while (opindex_ptr[1] != '\0') | |
1395 | { | |
1396 | operand = s390_operands + *(++opindex_ptr); | |
1397 | if (operand->flags & S390_OPERAND_OPTIONAL) | |
1398 | continue; | |
1399 | as_bad (_("syntax error; expected ,")); | |
1400 | break; | |
1401 | } | |
1402 | } | |
1403 | else | |
1404 | str++; | |
07855bec NC |
1405 | } |
1406 | } | |
1407 | else | |
1408 | { | |
1409 | /* We found an opening parentheses. */ | |
1410 | str++; | |
1411 | for (f = str; *f != '\0'; f++) | |
1412 | if (*f == ',' || *f == ')') | |
1413 | break; | |
1414 | /* If there is no comma until the closing parentheses OR | |
1415 | there is a comma right after the opening parentheses, | |
1416 | we have to skip optional operands. */ | |
1417 | if (*f == ',' && f == str) | |
1418 | { | |
1419 | /* comma directly after '(' ? */ | |
1420 | skip_optional = 1; | |
1421 | str++; | |
1422 | } | |
1423 | else | |
1424 | skip_optional = (*f != ','); | |
1425 | } | |
1426 | } | |
1427 | else if (operand->flags & S390_OPERAND_BASE) | |
1428 | { | |
1429 | /* After the base register the parenthesed block ends. */ | |
1430 | if (*str++ != ')') | |
1431 | as_bad (_("syntax error; missing ')' after base register")); | |
1432 | skip_optional = 0; | |
67c1ffbe | 1433 | /* If there is a next operand it must be separated by a comma. */ |
07855bec NC |
1434 | if (opindex_ptr[1] != '\0') |
1435 | { | |
6c639ef9 MS |
1436 | if (*str != ',') |
1437 | { | |
1438 | while (opindex_ptr[1] != '\0') | |
1439 | { | |
1440 | operand = s390_operands + *(++opindex_ptr); | |
1441 | if (operand->flags & S390_OPERAND_OPTIONAL) | |
1442 | continue; | |
1443 | as_bad (_("syntax error; expected ,")); | |
1444 | break; | |
1445 | } | |
1446 | } | |
1447 | else | |
1448 | str++; | |
07855bec NC |
1449 | } |
1450 | } | |
1451 | else | |
1452 | { | |
1453 | /* We can find an 'early' closing parentheses in e.g. D(L) instead | |
1454 | of D(L,B). In this case the base register has to be skipped. */ | |
1455 | if (*str == ')') | |
1456 | { | |
1457 | operand = s390_operands + *(++opindex_ptr); | |
1458 | ||
1459 | if (!(operand->flags & S390_OPERAND_BASE)) | |
1460 | as_bad (_("syntax error; ')' not allowed here")); | |
1461 | str++; | |
1462 | } | |
67c1ffbe | 1463 | /* If there is a next operand it must be separated by a comma. */ |
07855bec NC |
1464 | if (opindex_ptr[1] != '\0') |
1465 | { | |
6c639ef9 MS |
1466 | if (*str != ',') |
1467 | { | |
1468 | while (opindex_ptr[1] != '\0') | |
1469 | { | |
1470 | operand = s390_operands + *(++opindex_ptr); | |
1471 | if (operand->flags & S390_OPERAND_OPTIONAL) | |
1472 | continue; | |
1473 | as_bad (_("syntax error; expected ,")); | |
1474 | break; | |
1475 | } | |
1476 | } | |
1477 | else | |
1478 | str++; | |
07855bec | 1479 | } |
a85d7ed0 | 1480 | } |
a85d7ed0 | 1481 | } |
a85d7ed0 | 1482 | |
3882b010 | 1483 | while (ISSPACE (*str)) |
a85d7ed0 NC |
1484 | ++str; |
1485 | ||
1971b29d MS |
1486 | /* Check for tls instruction marker. */ |
1487 | reloc = s390_tls_suffix (&str, &ex); | |
1488 | if (reloc != BFD_RELOC_UNUSED) | |
1489 | { | |
1490 | /* We need to generate a fixup of type 'reloc' for this | |
1491 | instruction. */ | |
1492 | if (fc >= MAX_INSN_FIXUPS) | |
1493 | as_fatal (_("too many fixups")); | |
1494 | fixups[fc].exp = ex; | |
1495 | fixups[fc].opindex = -1; | |
1496 | fixups[fc].reloc = reloc; | |
1497 | ++fc; | |
1498 | } | |
1499 | ||
07855bec NC |
1500 | if (*str != '\0') |
1501 | { | |
1502 | char *linefeed; | |
a85d7ed0 | 1503 | |
07726851 | 1504 | if ((linefeed = strchr (str, '\n')) != NULL) |
07855bec NC |
1505 | *linefeed = '\0'; |
1506 | as_bad (_("junk at end of line: `%s'"), str); | |
1507 | if (linefeed != NULL) | |
1508 | *linefeed = '\n'; | |
1509 | } | |
a85d7ed0 NC |
1510 | |
1511 | /* Write out the instruction. */ | |
1512 | f = frag_more (opcode->oplen); | |
07855bec | 1513 | memcpy (f, insn, opcode->oplen); |
8f5b2891 | 1514 | dwarf2_emit_insn (opcode->oplen); |
a85d7ed0 NC |
1515 | |
1516 | /* Create any fixups. At this point we do not use a | |
1517 | bfd_reloc_code_real_type, but instead just use the | |
1518 | BFD_RELOC_UNUSED plus the operand index. This lets us easily | |
1519 | handle fixups for any operand type, although that is admittedly | |
1520 | not a very exciting feature. We pick a BFD reloc type in | |
55cf6793 | 1521 | md_apply_fix. */ |
07855bec NC |
1522 | for (i = 0; i < fc; i++) |
1523 | { | |
1971b29d MS |
1524 | |
1525 | if (fixups[i].opindex < 0) | |
1526 | { | |
1527 | /* Create tls instruction marker relocation. */ | |
1528 | fix_new_exp (frag_now, f - frag_now->fr_literal, opcode->oplen, | |
1529 | &fixups[i].exp, 0, fixups[i].reloc); | |
1530 | continue; | |
1531 | } | |
1532 | ||
07855bec | 1533 | operand = s390_operands + fixups[i].opindex; |
a85d7ed0 | 1534 | |
07855bec NC |
1535 | if (fixups[i].reloc != BFD_RELOC_UNUSED) |
1536 | { | |
1537 | reloc_howto_type *reloc_howto; | |
1538 | fixS *fixP; | |
1539 | int size; | |
198ce79b | 1540 | |
07855bec NC |
1541 | reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); |
1542 | if (!reloc_howto) | |
1543 | abort (); | |
198ce79b | 1544 | |
07855bec NC |
1545 | size = bfd_get_reloc_size (reloc_howto); |
1546 | ||
1547 | if (size < 1 || size > 4) | |
1548 | abort (); | |
198ce79b AJ |
1549 | |
1550 | fixP = fix_new_exp (frag_now, | |
1551 | f - frag_now->fr_literal + (operand->shift/8), | |
07855bec NC |
1552 | size, &fixups[i].exp, reloc_howto->pc_relative, |
1553 | fixups[i].reloc); | |
1554 | /* Turn off overflow checking in fixup_segment. This is necessary | |
1555 | because fixup_segment will signal an overflow for large 4 byte | |
1556 | quantities for GOT12 relocations. */ | |
16a419ba | 1557 | if ( fixups[i].reloc == BFD_RELOC_390_GOT12 |
933fbc29 | 1558 | || fixups[i].reloc == BFD_RELOC_390_GOT20 |
16a419ba | 1559 | || fixups[i].reloc == BFD_RELOC_390_GOT16) |
07855bec NC |
1560 | fixP->fx_no_overflow = 1; |
1561 | } | |
1562 | else | |
1563 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, &fixups[i].exp, | |
1564 | (operand->flags & S390_OPERAND_PCREL) != 0, | |
1565 | ((bfd_reloc_code_real_type) | |
1566 | (fixups[i].opindex + (int) BFD_RELOC_UNUSED))); | |
1567 | } | |
a85d7ed0 NC |
1568 | return str; |
1569 | } | |
1570 | ||
1571 | /* This routine is called for each instruction to be assembled. */ | |
1572 | ||
1573 | void | |
5a49b8ac | 1574 | md_assemble (char *str) |
a85d7ed0 NC |
1575 | { |
1576 | const struct s390_opcode *opcode; | |
1577 | unsigned char insn[6]; | |
1578 | char *s; | |
1579 | ||
1580 | /* Get the opcode. */ | |
3882b010 | 1581 | for (s = str; *s != '\0' && ! ISSPACE (*s); s++) |
a85d7ed0 NC |
1582 | ; |
1583 | if (*s != '\0') | |
1584 | *s++ = '\0'; | |
1585 | ||
1586 | /* Look up the opcode in the hash table. */ | |
1587 | opcode = (struct s390_opcode *) hash_find (s390_opcode_hash, str); | |
07855bec NC |
1588 | if (opcode == (const struct s390_opcode *) NULL) |
1589 | { | |
1590 | as_bad (_("Unrecognized opcode: `%s'"), str); | |
1591 | return; | |
1592 | } | |
37a58793 MS |
1593 | else if (!(opcode->modes & current_mode_mask)) |
1594 | { | |
20203fb9 | 1595 | as_bad (_("Opcode %s not available in this mode"), str); |
37a58793 MS |
1596 | return; |
1597 | } | |
07726851 | 1598 | memcpy (insn, opcode->opcode, sizeof (insn)); |
07855bec | 1599 | md_gather_operands (s, insn, opcode); |
a85d7ed0 NC |
1600 | } |
1601 | ||
1602 | #ifndef WORKING_DOT_WORD | |
1603 | /* Handle long and short jumps. We don't support these */ | |
1604 | void | |
1605 | md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
1606 | char *ptr; | |
1607 | addressT from_addr, to_addr; | |
1608 | fragS *frag; | |
1609 | symbolS *to_symbol; | |
1610 | { | |
1611 | abort (); | |
1612 | } | |
1613 | ||
1614 | void | |
1615 | md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
1616 | char *ptr; | |
1617 | addressT from_addr, to_addr; | |
1618 | fragS *frag; | |
1619 | symbolS *to_symbol; | |
1620 | { | |
1621 | abort (); | |
1622 | } | |
1623 | #endif | |
1624 | ||
1625 | void | |
5a49b8ac | 1626 | s390_bss (int ignore ATTRIBUTE_UNUSED) |
a85d7ed0 NC |
1627 | { |
1628 | /* We don't support putting frags in the BSS segment, we fake it | |
1629 | by marking in_bss, then looking at s_skip for clues. */ | |
1630 | ||
1631 | subseg_set (bss_section, 0); | |
1632 | demand_empty_rest_of_line (); | |
1633 | } | |
1634 | ||
1635 | /* Pseudo-op handling. */ | |
1636 | ||
1637 | void | |
5a49b8ac | 1638 | s390_insn (int ignore ATTRIBUTE_UNUSED) |
a85d7ed0 NC |
1639 | { |
1640 | expressionS exp; | |
1641 | const struct s390_opcode *opformat; | |
1642 | unsigned char insn[6]; | |
1643 | char *s; | |
1644 | ||
1645 | /* Get the opcode format. */ | |
1646 | s = input_line_pointer; | |
3882b010 | 1647 | while (*s != '\0' && *s != ',' && ! ISSPACE (*s)) |
a85d7ed0 NC |
1648 | s++; |
1649 | if (*s != ',') | |
1650 | as_bad (_("Invalid .insn format\n")); | |
1651 | *s++ = '\0'; | |
1652 | ||
1653 | /* Look up the opcode in the hash table. */ | |
1654 | opformat = (struct s390_opcode *) | |
1655 | hash_find (s390_opformat_hash, input_line_pointer); | |
07855bec NC |
1656 | if (opformat == (const struct s390_opcode *) NULL) |
1657 | { | |
1658 | as_bad (_("Unrecognized opcode format: `%s'"), input_line_pointer); | |
1659 | return; | |
1660 | } | |
a85d7ed0 NC |
1661 | input_line_pointer = s; |
1662 | expression (&exp); | |
07855bec NC |
1663 | if (exp.X_op == O_constant) |
1664 | { | |
1d6d62a4 | 1665 | if ( ( opformat->oplen == 6 |
1d6d62a4 MS |
1666 | && (addressT) exp.X_add_number < (1ULL << 48)) |
1667 | || ( opformat->oplen == 4 | |
1d6d62a4 MS |
1668 | && (addressT) exp.X_add_number < (1ULL << 32)) |
1669 | || ( opformat->oplen == 2 | |
1d6d62a4 | 1670 | && (addressT) exp.X_add_number < (1ULL << 16))) |
2132e3a3 | 1671 | md_number_to_chars ((char *) insn, exp.X_add_number, opformat->oplen); |
07855bec | 1672 | else |
07726851 | 1673 | as_bad (_("Invalid .insn format\n")); |
07855bec NC |
1674 | } |
1675 | else if (exp.X_op == O_big) | |
1676 | { | |
16a419ba NC |
1677 | if (exp.X_add_number > 0 |
1678 | && opformat->oplen == 6 | |
1679 | && generic_bignum[3] == 0) | |
07855bec | 1680 | { |
2132e3a3 AM |
1681 | md_number_to_chars ((char *) insn, generic_bignum[2], 2); |
1682 | md_number_to_chars ((char *) &insn[2], generic_bignum[1], 2); | |
1683 | md_number_to_chars ((char *) &insn[4], generic_bignum[0], 2); | |
07855bec NC |
1684 | } |
1685 | else | |
07726851 | 1686 | as_bad (_("Invalid .insn format\n")); |
07855bec NC |
1687 | } |
1688 | else | |
a85d7ed0 | 1689 | as_bad (_("second operand of .insn not a constant\n")); |
a85d7ed0 | 1690 | |
b6849f55 NC |
1691 | if (strcmp (opformat->name, "e") != 0 && *input_line_pointer++ != ',') |
1692 | as_bad (_("missing comma after insn constant\n")); | |
98d3f06f | 1693 | |
07726851 | 1694 | if ((s = strchr (input_line_pointer, '\n')) != NULL) |
a85d7ed0 | 1695 | *s = '\0'; |
b6849f55 NC |
1696 | input_line_pointer = md_gather_operands (input_line_pointer, insn, |
1697 | opformat); | |
a85d7ed0 NC |
1698 | if (s != NULL) |
1699 | *s = '\n'; | |
1700 | demand_empty_rest_of_line (); | |
1701 | } | |
1702 | ||
1703 | /* The .byte pseudo-op. This is similar to the normal .byte | |
1704 | pseudo-op, but it can also take a single ASCII string. */ | |
1705 | ||
1706 | static void | |
5a49b8ac | 1707 | s390_byte (int ignore ATTRIBUTE_UNUSED) |
a85d7ed0 NC |
1708 | { |
1709 | if (*input_line_pointer != '\"') | |
1710 | { | |
1711 | cons (1); | |
1712 | return; | |
1713 | } | |
1714 | ||
1715 | /* Gather characters. A real double quote is doubled. Unusual | |
1716 | characters are not permitted. */ | |
1717 | ++input_line_pointer; | |
1718 | while (1) | |
1719 | { | |
1720 | char c; | |
1721 | ||
1722 | c = *input_line_pointer++; | |
1723 | ||
1724 | if (c == '\"') | |
1725 | { | |
1726 | if (*input_line_pointer != '\"') | |
1727 | break; | |
1728 | ++input_line_pointer; | |
1729 | } | |
1730 | ||
1731 | FRAG_APPEND_1_CHAR (c); | |
1732 | } | |
1733 | ||
1734 | demand_empty_rest_of_line (); | |
1735 | } | |
1736 | ||
1737 | /* The .ltorg pseudo-op.This emits all literals defined since the last | |
198ce79b | 1738 | .ltorg or the invocation of gas. Literals are defined with the |
a85d7ed0 NC |
1739 | @lit suffix. */ |
1740 | ||
1741 | static void | |
5a49b8ac | 1742 | s390_literals (int ignore ATTRIBUTE_UNUSED) |
a85d7ed0 NC |
1743 | { |
1744 | struct s390_lpe *lpe; | |
1745 | ||
1746 | if (lp_sym == NULL || lpe_count == 0) | |
98d3f06f | 1747 | return; /* Nothing to be done. */ |
a85d7ed0 NC |
1748 | |
1749 | /* Emit symbol for start of literal pool. */ | |
1750 | S_SET_SEGMENT (lp_sym, now_seg); | |
1751 | S_SET_VALUE (lp_sym, (valueT) frag_now_fix ()); | |
1752 | lp_sym->sy_frag = frag_now; | |
1753 | ||
07855bec NC |
1754 | while (lpe_list) |
1755 | { | |
1756 | lpe = lpe_list; | |
1757 | lpe_list = lpe_list->next; | |
1758 | S_SET_SEGMENT (lpe->sym, now_seg); | |
1759 | S_SET_VALUE (lpe->sym, (valueT) frag_now_fix ()); | |
1760 | lpe->sym->sy_frag = frag_now; | |
1761 | ||
1762 | /* Emit literal pool entry. */ | |
1763 | if (lpe->reloc != BFD_RELOC_UNUSED) | |
1764 | { | |
198ce79b | 1765 | reloc_howto_type *reloc_howto = |
07855bec NC |
1766 | bfd_reloc_type_lookup (stdoutput, lpe->reloc); |
1767 | int size = bfd_get_reloc_size (reloc_howto); | |
1768 | char *where; | |
1769 | ||
1770 | if (size > lpe->nbytes) | |
1771 | as_bad (_("%s relocations do not fit in %d bytes"), | |
1772 | reloc_howto->name, lpe->nbytes); | |
07726851 | 1773 | where = frag_more (lpe->nbytes); |
07855bec NC |
1774 | md_number_to_chars (where, 0, size); |
1775 | fix_new_exp (frag_now, where - frag_now->fr_literal, | |
1776 | size, &lpe->ex, reloc_howto->pc_relative, lpe->reloc); | |
1777 | } | |
1778 | else | |
1779 | { | |
1780 | if (lpe->ex.X_op == O_big) | |
1781 | { | |
1782 | if (lpe->ex.X_add_number <= 0) | |
1783 | generic_floating_point_number = lpe->floatnum; | |
1784 | else | |
1785 | memcpy (generic_bignum, lpe->bignum, | |
98d3f06f | 1786 | lpe->ex.X_add_number * sizeof (LITTLENUM_TYPE)); |
07855bec NC |
1787 | } |
1788 | emit_expr (&lpe->ex, lpe->nbytes); | |
1789 | } | |
a85d7ed0 | 1790 | |
07855bec NC |
1791 | lpe->next = lpe_free_list; |
1792 | lpe_free_list = lpe; | |
1793 | } | |
a85d7ed0 NC |
1794 | lpe_list_tail = NULL; |
1795 | lp_sym = NULL; | |
1796 | lp_count++; | |
1797 | lpe_count = 0; | |
1798 | } | |
1799 | ||
902cc293 AK |
1800 | /* The .machine pseudo op allows to switch to a different CPU level in |
1801 | the asm listing. The current CPU setting can be stored on a stack | |
1802 | with .machine push and restored with .machined pop. */ | |
1803 | ||
1804 | static void | |
1805 | s390_machine (int ignore ATTRIBUTE_UNUSED) | |
1806 | { | |
1807 | char *cpu_string; | |
1808 | #define MAX_HISTORY 100 | |
1809 | static unsigned int *cpu_history; | |
1810 | static int curr_hist; | |
1811 | ||
1812 | SKIP_WHITESPACE (); | |
1813 | ||
1814 | if (*input_line_pointer == '"') | |
1815 | { | |
1816 | int len; | |
1817 | cpu_string = demand_copy_C_string (&len); | |
1818 | } | |
1819 | else | |
1820 | { | |
1821 | char c; | |
1822 | cpu_string = input_line_pointer; | |
1823 | c = get_symbol_end (); | |
1824 | cpu_string = xstrdup (cpu_string); | |
1825 | *input_line_pointer = c; | |
1826 | } | |
1827 | ||
1828 | if (cpu_string != NULL) | |
1829 | { | |
1830 | unsigned int old_cpu = current_cpu; | |
1831 | unsigned int new_cpu; | |
1832 | char *p; | |
1833 | ||
1834 | for (p = cpu_string; *p != 0; p++) | |
1835 | *p = TOLOWER (*p); | |
1836 | ||
1837 | if (strcmp (cpu_string, "push") == 0) | |
1838 | { | |
1839 | if (cpu_history == NULL) | |
1840 | cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history)); | |
1841 | ||
1842 | if (curr_hist >= MAX_HISTORY) | |
1843 | as_bad (_(".machine stack overflow")); | |
1844 | else | |
1845 | cpu_history[curr_hist++] = current_cpu; | |
1846 | } | |
1847 | else if (strcmp (cpu_string, "pop") == 0) | |
1848 | { | |
1849 | if (curr_hist <= 0) | |
1850 | as_bad (_(".machine stack underflow")); | |
1851 | else | |
1852 | current_cpu = cpu_history[--curr_hist]; | |
1853 | } | |
1854 | else if ((new_cpu = s390_parse_cpu (cpu_string)) != (unsigned int)-1) | |
1855 | current_cpu = new_cpu; | |
1856 | else | |
1857 | as_bad (_("invalid machine `%s'"), cpu_string); | |
1858 | ||
1859 | if (current_cpu != old_cpu) | |
1860 | s390_setup_opcodes (); | |
1861 | } | |
1862 | ||
1863 | demand_empty_rest_of_line (); | |
1864 | } | |
1865 | ||
a85d7ed0 | 1866 | char * |
499ac353 | 1867 | md_atof (int type, char *litp, int *sizep) |
a85d7ed0 | 1868 | { |
499ac353 | 1869 | return ieee_md_atof (type, litp, sizep, TRUE); |
a85d7ed0 NC |
1870 | } |
1871 | ||
1872 | /* Align a section (I don't know why this is machine dependent). */ | |
1873 | ||
1874 | valueT | |
5a49b8ac | 1875 | md_section_align (asection *seg, valueT addr) |
a85d7ed0 NC |
1876 | { |
1877 | int align = bfd_get_section_alignment (stdoutput, seg); | |
1878 | ||
1879 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
1880 | } | |
1881 | ||
1882 | /* We don't have any form of relaxing. */ | |
1883 | ||
1884 | int | |
5a49b8ac AM |
1885 | md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED, |
1886 | asection *seg ATTRIBUTE_UNUSED) | |
a85d7ed0 NC |
1887 | { |
1888 | abort (); | |
1889 | return 0; | |
1890 | } | |
1891 | ||
1892 | /* Convert a machine dependent frag. We never generate these. */ | |
1893 | ||
1894 | void | |
5a49b8ac AM |
1895 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, |
1896 | asection *sec ATTRIBUTE_UNUSED, | |
1897 | fragS *fragp ATTRIBUTE_UNUSED) | |
a85d7ed0 NC |
1898 | { |
1899 | abort (); | |
1900 | } | |
1901 | ||
1902 | symbolS * | |
5a49b8ac | 1903 | md_undefined_symbol (char *name) |
a85d7ed0 | 1904 | { |
98d3f06f | 1905 | if (*name == '_' && *(name + 1) == 'G' |
07726851 | 1906 | && strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) |
98d3f06f KH |
1907 | { |
1908 | if (!GOT_symbol) | |
1909 | { | |
1910 | if (symbol_find (name)) | |
1911 | as_bad (_("GOT already in symbol table")); | |
1912 | GOT_symbol = symbol_new (name, undefined_section, | |
1913 | (valueT) 0, &zero_address_frag); | |
1914 | } | |
1915 | return GOT_symbol; | |
1916 | } | |
a85d7ed0 NC |
1917 | return 0; |
1918 | } | |
1919 | ||
1920 | /* Functions concerning relocs. */ | |
1921 | ||
1922 | /* The location from which a PC relative jump should be calculated, | |
1923 | given a PC relative reloc. */ | |
1924 | ||
1925 | long | |
5a49b8ac | 1926 | md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED) |
a85d7ed0 NC |
1927 | { |
1928 | return fixp->fx_frag->fr_address + fixp->fx_where; | |
1929 | } | |
1930 | ||
1931 | /* Here we decide which fixups can be adjusted to make them relative to | |
1932 | the beginning of the section instead of the symbol. Basically we need | |
1933 | to make sure that the dynamic relocations are done correctly, so in | |
1934 | some cases we force the original symbol to be used. */ | |
1935 | int | |
5a49b8ac | 1936 | tc_s390_fix_adjustable (fixS *fixP) |
a85d7ed0 | 1937 | { |
0a00dd48 MS |
1938 | /* Don't adjust references to merge sections. */ |
1939 | if ((S_GET_SEGMENT (fixP->fx_addsy)->flags & SEC_MERGE) != 0) | |
1940 | return 0; | |
a85d7ed0 | 1941 | /* adjust_reloc_syms doesn't know about the GOT. */ |
2a19f73f MS |
1942 | if ( fixP->fx_r_type == BFD_RELOC_16_GOTOFF |
1943 | || fixP->fx_r_type == BFD_RELOC_32_GOTOFF | |
1944 | || fixP->fx_r_type == BFD_RELOC_390_GOTOFF64 | |
1945 | || fixP->fx_r_type == BFD_RELOC_390_PLTOFF16 | |
1946 | || fixP->fx_r_type == BFD_RELOC_390_PLTOFF32 | |
1947 | || fixP->fx_r_type == BFD_RELOC_390_PLTOFF64 | |
a85d7ed0 NC |
1948 | || fixP->fx_r_type == BFD_RELOC_390_PLT16DBL |
1949 | || fixP->fx_r_type == BFD_RELOC_390_PLT32 | |
1950 | || fixP->fx_r_type == BFD_RELOC_390_PLT32DBL | |
1951 | || fixP->fx_r_type == BFD_RELOC_390_PLT64 | |
1952 | || fixP->fx_r_type == BFD_RELOC_390_GOT12 | |
933fbc29 | 1953 | || fixP->fx_r_type == BFD_RELOC_390_GOT20 |
a85d7ed0 NC |
1954 | || fixP->fx_r_type == BFD_RELOC_390_GOT16 |
1955 | || fixP->fx_r_type == BFD_RELOC_32_GOT_PCREL | |
1956 | || fixP->fx_r_type == BFD_RELOC_390_GOT64 | |
07855bec | 1957 | || fixP->fx_r_type == BFD_RELOC_390_GOTENT |
2a19f73f MS |
1958 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT12 |
1959 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT16 | |
933fbc29 | 1960 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT20 |
2a19f73f MS |
1961 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT32 |
1962 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLT64 | |
1963 | || fixP->fx_r_type == BFD_RELOC_390_GOTPLTENT | |
1971b29d MS |
1964 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LOAD |
1965 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GDCALL | |
1966 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDCALL | |
1967 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GD32 | |
1968 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GD64 | |
1969 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE12 | |
933fbc29 | 1970 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE20 |
1971b29d MS |
1971 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE32 |
1972 | || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE64 | |
1973 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDM32 | |
1974 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDM64 | |
1975 | || fixP->fx_r_type == BFD_RELOC_390_TLS_IE32 | |
1976 | || fixP->fx_r_type == BFD_RELOC_390_TLS_IE64 | |
1977 | || fixP->fx_r_type == BFD_RELOC_390_TLS_IEENT | |
1978 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LE32 | |
1979 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LE64 | |
1980 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDO32 | |
1981 | || fixP->fx_r_type == BFD_RELOC_390_TLS_LDO64 | |
1982 | || fixP->fx_r_type == BFD_RELOC_390_TLS_DTPMOD | |
1983 | || fixP->fx_r_type == BFD_RELOC_390_TLS_DTPOFF | |
1984 | || fixP->fx_r_type == BFD_RELOC_390_TLS_TPOFF | |
a85d7ed0 NC |
1985 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
1986 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
1987 | return 0; | |
1988 | return 1; | |
1989 | } | |
1990 | ||
b8edc45c | 1991 | /* Return true if we must always emit a reloc for a type and false if |
c03099e6 | 1992 | there is some hope of resolving it at assembly time. */ |
b8edc45c | 1993 | int |
5a49b8ac | 1994 | tc_s390_force_relocation (struct fix *fixp) |
b8edc45c MS |
1995 | { |
1996 | /* Ensure we emit a relocation for every reference to the global | |
1997 | offset table or to the procedure link table. */ | |
1998 | switch (fixp->fx_r_type) | |
1999 | { | |
2000 | case BFD_RELOC_390_GOT12: | |
933fbc29 | 2001 | case BFD_RELOC_390_GOT20: |
b8edc45c MS |
2002 | case BFD_RELOC_32_GOT_PCREL: |
2003 | case BFD_RELOC_32_GOTOFF: | |
2a19f73f MS |
2004 | case BFD_RELOC_390_GOTOFF64: |
2005 | case BFD_RELOC_390_PLTOFF16: | |
2006 | case BFD_RELOC_390_PLTOFF32: | |
2007 | case BFD_RELOC_390_PLTOFF64: | |
b8edc45c MS |
2008 | case BFD_RELOC_390_GOTPC: |
2009 | case BFD_RELOC_390_GOT16: | |
2010 | case BFD_RELOC_390_GOTPCDBL: | |
2011 | case BFD_RELOC_390_GOT64: | |
2012 | case BFD_RELOC_390_GOTENT: | |
2013 | case BFD_RELOC_390_PLT32: | |
2014 | case BFD_RELOC_390_PLT16DBL: | |
2015 | case BFD_RELOC_390_PLT32DBL: | |
2016 | case BFD_RELOC_390_PLT64: | |
2a19f73f MS |
2017 | case BFD_RELOC_390_GOTPLT12: |
2018 | case BFD_RELOC_390_GOTPLT16: | |
933fbc29 | 2019 | case BFD_RELOC_390_GOTPLT20: |
2a19f73f MS |
2020 | case BFD_RELOC_390_GOTPLT32: |
2021 | case BFD_RELOC_390_GOTPLT64: | |
2022 | case BFD_RELOC_390_GOTPLTENT: | |
b8edc45c MS |
2023 | return 1; |
2024 | default: | |
a161fe53 | 2025 | break;; |
b8edc45c | 2026 | } |
a161fe53 | 2027 | |
ae6063d4 | 2028 | return generic_force_reloc (fixp); |
b8edc45c MS |
2029 | } |
2030 | ||
a85d7ed0 NC |
2031 | /* Apply a fixup to the object code. This is called for all the |
2032 | fixups we generated by the call to fix_new_exp, above. In the call | |
2033 | above we used a reloc code which was the largest legal reloc code | |
2034 | plus the operand index. Here we undo that to recover the operand | |
2035 | index. At this point all symbol values should be fully resolved, | |
2036 | and we attempt to completely resolve the reloc. If we can not do | |
2037 | that, we determine the correct reloc code and put it back in the | |
2038 | fixup. */ | |
2039 | ||
94f592af | 2040 | void |
5a49b8ac | 2041 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
a85d7ed0 NC |
2042 | { |
2043 | char *where; | |
98d3f06f | 2044 | valueT value = *valP; |
a85d7ed0 | 2045 | |
94f592af | 2046 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
a85d7ed0 | 2047 | |
98d3f06f | 2048 | if (fixP->fx_subsy != NULL) |
f1fc51da | 2049 | as_bad_where (fixP->fx_file, fixP->fx_line, |
20203fb9 | 2050 | _("cannot emit relocation %s against subsy symbol %s"), |
f1fc51da MS |
2051 | bfd_get_reloc_code_name (fixP->fx_r_type), |
2052 | S_GET_NAME (fixP->fx_subsy)); | |
98d3f06f KH |
2053 | |
2054 | if (fixP->fx_addsy != NULL) | |
07855bec | 2055 | { |
94f592af NC |
2056 | if (fixP->fx_pcrel) |
2057 | value += fixP->fx_frag->fr_address + fixP->fx_where; | |
07855bec NC |
2058 | } |
2059 | else | |
94f592af | 2060 | fixP->fx_done = 1; |
a85d7ed0 | 2061 | |
94f592af | 2062 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) |
07855bec NC |
2063 | { |
2064 | const struct s390_operand *operand; | |
2065 | int opindex; | |
198ce79b | 2066 | |
94f592af | 2067 | opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; |
07855bec | 2068 | operand = &s390_operands[opindex]; |
198ce79b | 2069 | |
94f592af | 2070 | if (fixP->fx_done) |
07855bec NC |
2071 | { |
2072 | /* Insert the fully resolved operand value. */ | |
2132e3a3 AM |
2073 | s390_insert_operand ((unsigned char *) where, operand, |
2074 | (offsetT) value, fixP->fx_file, fixP->fx_line); | |
94f592af | 2075 | return; |
07855bec | 2076 | } |
198ce79b | 2077 | |
07855bec NC |
2078 | /* Determine a BFD reloc value based on the operand information. |
2079 | We are only prepared to turn a few of the operands into | |
2080 | relocs. */ | |
94f592af | 2081 | fixP->fx_offset = value; |
07855bec NC |
2082 | if (operand->bits == 12 && operand->shift == 20) |
2083 | { | |
94f592af NC |
2084 | fixP->fx_size = 2; |
2085 | fixP->fx_where += 2; | |
2086 | fixP->fx_r_type = BFD_RELOC_390_12; | |
07855bec NC |
2087 | } |
2088 | else if (operand->bits == 12 && operand->shift == 36) | |
2089 | { | |
94f592af NC |
2090 | fixP->fx_size = 2; |
2091 | fixP->fx_where += 4; | |
2092 | fixP->fx_r_type = BFD_RELOC_390_12; | |
07855bec | 2093 | } |
933fbc29 MS |
2094 | else if (operand->bits == 20 && operand->shift == 20) |
2095 | { | |
2096 | fixP->fx_size = 2; | |
2097 | fixP->fx_where += 2; | |
2098 | fixP->fx_r_type = BFD_RELOC_390_20; | |
2099 | } | |
07855bec NC |
2100 | else if (operand->bits == 8 && operand->shift == 8) |
2101 | { | |
94f592af NC |
2102 | fixP->fx_size = 1; |
2103 | fixP->fx_where += 1; | |
2104 | fixP->fx_r_type = BFD_RELOC_8; | |
07855bec NC |
2105 | } |
2106 | else if (operand->bits == 16 && operand->shift == 16) | |
2107 | { | |
94f592af NC |
2108 | fixP->fx_size = 2; |
2109 | fixP->fx_where += 2; | |
07855bec NC |
2110 | if (operand->flags & S390_OPERAND_PCREL) |
2111 | { | |
94f592af NC |
2112 | fixP->fx_r_type = BFD_RELOC_390_PC16DBL; |
2113 | fixP->fx_offset += 2; | |
07855bec NC |
2114 | } |
2115 | else | |
94f592af | 2116 | fixP->fx_r_type = BFD_RELOC_16; |
07855bec | 2117 | } |
16a419ba NC |
2118 | else if (operand->bits == 32 && operand->shift == 16 |
2119 | && (operand->flags & S390_OPERAND_PCREL)) | |
07855bec | 2120 | { |
94f592af NC |
2121 | fixP->fx_size = 4; |
2122 | fixP->fx_where += 2; | |
2123 | fixP->fx_offset += 2; | |
2124 | fixP->fx_r_type = BFD_RELOC_390_PC32DBL; | |
07855bec | 2125 | } |
a85d7ed0 | 2126 | else |
07855bec NC |
2127 | { |
2128 | char *sfile; | |
2129 | unsigned int sline; | |
198ce79b | 2130 | |
07855bec NC |
2131 | /* Use expr_symbol_where to see if this is an expression |
2132 | symbol. */ | |
94f592af NC |
2133 | if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline)) |
2134 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
07855bec NC |
2135 | _("unresolved expression that must be resolved")); |
2136 | else | |
94f592af | 2137 | as_bad_where (fixP->fx_file, fixP->fx_line, |
07855bec | 2138 | _("unsupported relocation type")); |
94f592af NC |
2139 | fixP->fx_done = 1; |
2140 | return; | |
07855bec | 2141 | } |
a85d7ed0 | 2142 | } |
07855bec NC |
2143 | else |
2144 | { | |
94f592af | 2145 | switch (fixP->fx_r_type) |
07855bec NC |
2146 | { |
2147 | case BFD_RELOC_8: | |
94f592af | 2148 | if (fixP->fx_pcrel) |
07855bec | 2149 | abort (); |
94f592af | 2150 | if (fixP->fx_done) |
07855bec NC |
2151 | md_number_to_chars (where, value, 1); |
2152 | break; | |
2153 | case BFD_RELOC_390_12: | |
2154 | case BFD_RELOC_390_GOT12: | |
2a19f73f | 2155 | case BFD_RELOC_390_GOTPLT12: |
94f592af | 2156 | if (fixP->fx_done) |
07855bec NC |
2157 | { |
2158 | unsigned short mop; | |
2159 | ||
2160 | mop = bfd_getb16 ((unsigned char *) where); | |
2161 | mop |= (unsigned short) (value & 0xfff); | |
2162 | bfd_putb16 ((bfd_vma) mop, (unsigned char *) where); | |
198ce79b | 2163 | } |
07855bec | 2164 | break; |
198ce79b | 2165 | |
933fbc29 MS |
2166 | case BFD_RELOC_390_20: |
2167 | case BFD_RELOC_390_GOT20: | |
2168 | case BFD_RELOC_390_GOTPLT20: | |
2169 | if (fixP->fx_done) | |
2170 | { | |
2171 | unsigned int mop; | |
2172 | mop = bfd_getb32 ((unsigned char *) where); | |
2173 | mop |= (unsigned int) ((value & 0xfff) << 8 | | |
2174 | (value & 0xff000) >> 12); | |
2175 | bfd_putb32 ((bfd_vma) mop, (unsigned char *) where); | |
2176 | } | |
2177 | break; | |
2178 | ||
07855bec NC |
2179 | case BFD_RELOC_16: |
2180 | case BFD_RELOC_GPREL16: | |
2181 | case BFD_RELOC_16_GOT_PCREL: | |
2182 | case BFD_RELOC_16_GOTOFF: | |
94f592af NC |
2183 | if (fixP->fx_pcrel) |
2184 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
20203fb9 | 2185 | _("cannot emit PC relative %s relocation%s%s"), |
94f592af NC |
2186 | bfd_get_reloc_code_name (fixP->fx_r_type), |
2187 | fixP->fx_addsy != NULL ? " against " : "", | |
2188 | (fixP->fx_addsy != NULL | |
2189 | ? S_GET_NAME (fixP->fx_addsy) | |
07855bec | 2190 | : "")); |
94f592af | 2191 | if (fixP->fx_done) |
07855bec NC |
2192 | md_number_to_chars (where, value, 2); |
2193 | break; | |
2194 | case BFD_RELOC_390_GOT16: | |
2a19f73f MS |
2195 | case BFD_RELOC_390_PLTOFF16: |
2196 | case BFD_RELOC_390_GOTPLT16: | |
94f592af | 2197 | if (fixP->fx_done) |
07855bec NC |
2198 | md_number_to_chars (where, value, 2); |
2199 | break; | |
2200 | case BFD_RELOC_390_PC16DBL: | |
2201 | case BFD_RELOC_390_PLT16DBL: | |
2202 | value += 2; | |
94f592af | 2203 | if (fixP->fx_done) |
07855bec NC |
2204 | md_number_to_chars (where, (offsetT) value >> 1, 2); |
2205 | break; | |
2206 | ||
2207 | case BFD_RELOC_32: | |
94f592af NC |
2208 | if (fixP->fx_pcrel) |
2209 | fixP->fx_r_type = BFD_RELOC_32_PCREL; | |
07855bec | 2210 | else |
94f592af NC |
2211 | fixP->fx_r_type = BFD_RELOC_32; |
2212 | if (fixP->fx_done) | |
07855bec NC |
2213 | md_number_to_chars (where, value, 4); |
2214 | break; | |
2215 | case BFD_RELOC_32_PCREL: | |
2216 | case BFD_RELOC_32_BASEREL: | |
94f592af NC |
2217 | fixP->fx_r_type = BFD_RELOC_32_PCREL; |
2218 | if (fixP->fx_done) | |
07855bec NC |
2219 | md_number_to_chars (where, value, 4); |
2220 | break; | |
2221 | case BFD_RELOC_32_GOT_PCREL: | |
2a19f73f | 2222 | case BFD_RELOC_390_PLTOFF32: |
07855bec | 2223 | case BFD_RELOC_390_PLT32: |
2a19f73f | 2224 | case BFD_RELOC_390_GOTPLT32: |
94f592af | 2225 | if (fixP->fx_done) |
07855bec NC |
2226 | md_number_to_chars (where, value, 4); |
2227 | break; | |
2228 | case BFD_RELOC_390_PC32DBL: | |
2229 | case BFD_RELOC_390_PLT32DBL: | |
2230 | case BFD_RELOC_390_GOTPCDBL: | |
2231 | case BFD_RELOC_390_GOTENT: | |
2a19f73f | 2232 | case BFD_RELOC_390_GOTPLTENT: |
07855bec | 2233 | value += 2; |
94f592af | 2234 | if (fixP->fx_done) |
07855bec NC |
2235 | md_number_to_chars (where, (offsetT) value >> 1, 4); |
2236 | break; | |
2237 | ||
2238 | case BFD_RELOC_32_GOTOFF: | |
94f592af | 2239 | if (fixP->fx_done) |
07726851 | 2240 | md_number_to_chars (where, value, sizeof (int)); |
07855bec NC |
2241 | break; |
2242 | ||
2a19f73f MS |
2243 | case BFD_RELOC_390_GOTOFF64: |
2244 | if (fixP->fx_done) | |
2245 | md_number_to_chars (where, value, 8); | |
2246 | break; | |
2247 | ||
07855bec | 2248 | case BFD_RELOC_390_GOT64: |
2a19f73f | 2249 | case BFD_RELOC_390_PLTOFF64: |
07855bec | 2250 | case BFD_RELOC_390_PLT64: |
2a19f73f | 2251 | case BFD_RELOC_390_GOTPLT64: |
94f592af | 2252 | if (fixP->fx_done) |
07855bec NC |
2253 | md_number_to_chars (where, value, 8); |
2254 | break; | |
2255 | ||
2256 | case BFD_RELOC_64: | |
94f592af NC |
2257 | if (fixP->fx_pcrel) |
2258 | fixP->fx_r_type = BFD_RELOC_64_PCREL; | |
07855bec | 2259 | else |
94f592af NC |
2260 | fixP->fx_r_type = BFD_RELOC_64; |
2261 | if (fixP->fx_done) | |
07855bec NC |
2262 | md_number_to_chars (where, value, 8); |
2263 | break; | |
2264 | ||
2265 | case BFD_RELOC_64_PCREL: | |
94f592af NC |
2266 | fixP->fx_r_type = BFD_RELOC_64_PCREL; |
2267 | if (fixP->fx_done) | |
07855bec NC |
2268 | md_number_to_chars (where, value, 8); |
2269 | break; | |
2270 | ||
2271 | case BFD_RELOC_VTABLE_INHERIT: | |
2272 | case BFD_RELOC_VTABLE_ENTRY: | |
94f592af NC |
2273 | fixP->fx_done = 0; |
2274 | return; | |
07855bec | 2275 | |
1971b29d MS |
2276 | case BFD_RELOC_390_TLS_LOAD: |
2277 | case BFD_RELOC_390_TLS_GDCALL: | |
2278 | case BFD_RELOC_390_TLS_LDCALL: | |
2279 | case BFD_RELOC_390_TLS_GD32: | |
2280 | case BFD_RELOC_390_TLS_GD64: | |
2281 | case BFD_RELOC_390_TLS_GOTIE12: | |
933fbc29 | 2282 | case BFD_RELOC_390_TLS_GOTIE20: |
1971b29d MS |
2283 | case BFD_RELOC_390_TLS_GOTIE32: |
2284 | case BFD_RELOC_390_TLS_GOTIE64: | |
2285 | case BFD_RELOC_390_TLS_LDM32: | |
2286 | case BFD_RELOC_390_TLS_LDM64: | |
2287 | case BFD_RELOC_390_TLS_IE32: | |
2288 | case BFD_RELOC_390_TLS_IE64: | |
2289 | case BFD_RELOC_390_TLS_LE32: | |
2290 | case BFD_RELOC_390_TLS_LE64: | |
2291 | case BFD_RELOC_390_TLS_LDO32: | |
2292 | case BFD_RELOC_390_TLS_LDO64: | |
2293 | case BFD_RELOC_390_TLS_DTPMOD: | |
2294 | case BFD_RELOC_390_TLS_DTPOFF: | |
2295 | case BFD_RELOC_390_TLS_TPOFF: | |
7c1d0959 | 2296 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
1971b29d MS |
2297 | /* Fully resolved at link time. */ |
2298 | break; | |
2299 | case BFD_RELOC_390_TLS_IEENT: | |
2300 | /* Fully resolved at link time. */ | |
7c1d0959 | 2301 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
1971b29d MS |
2302 | value += 2; |
2303 | break; | |
2304 | ||
07855bec NC |
2305 | default: |
2306 | { | |
94f592af | 2307 | const char *reloc_name = bfd_get_reloc_code_name (fixP->fx_r_type); |
198ce79b | 2308 | |
07855bec | 2309 | if (reloc_name != NULL) |
20203fb9 | 2310 | as_fatal (_("Gas failure, reloc type %s\n"), reloc_name); |
07855bec | 2311 | else |
20203fb9 | 2312 | as_fatal (_("Gas failure, reloc type #%i\n"), fixP->fx_r_type); |
07855bec NC |
2313 | } |
2314 | } | |
a85d7ed0 | 2315 | |
94f592af | 2316 | fixP->fx_offset = value; |
07855bec | 2317 | } |
a85d7ed0 NC |
2318 | } |
2319 | ||
2320 | /* Generate a reloc for a fixup. */ | |
2321 | ||
2322 | arelent * | |
5a49b8ac | 2323 | tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp) |
a85d7ed0 NC |
2324 | { |
2325 | bfd_reloc_code_real_type code; | |
2326 | arelent *reloc; | |
2327 | ||
2328 | code = fixp->fx_r_type; | |
07855bec NC |
2329 | if (GOT_symbol && fixp->fx_addsy == GOT_symbol) |
2330 | { | |
16a419ba NC |
2331 | if ( (s390_arch_size == 32 && code == BFD_RELOC_32_PCREL) |
2332 | || (s390_arch_size == 64 && code == BFD_RELOC_64_PCREL)) | |
07855bec NC |
2333 | code = BFD_RELOC_390_GOTPC; |
2334 | if (code == BFD_RELOC_390_PC32DBL) | |
2335 | code = BFD_RELOC_390_GOTPCDBL; | |
2336 | } | |
a85d7ed0 NC |
2337 | |
2338 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
2339 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2340 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
2341 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2342 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); | |
2343 | if (reloc->howto == NULL) | |
2344 | { | |
2345 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
98d3f06f KH |
2346 | _("cannot represent relocation type %s"), |
2347 | bfd_get_reloc_code_name (code)); | |
a85d7ed0 NC |
2348 | /* Set howto to a garbage value so that we can keep going. */ |
2349 | reloc->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); | |
9c2799c2 | 2350 | gas_assert (reloc->howto != NULL); |
a85d7ed0 NC |
2351 | } |
2352 | reloc->addend = fixp->fx_offset; | |
2353 | ||
2354 | return reloc; | |
2355 | } | |
75e21f08 JJ |
2356 | |
2357 | void | |
5a49b8ac | 2358 | s390_cfi_frame_initial_instructions (void) |
75e21f08 JJ |
2359 | { |
2360 | cfi_add_CFA_def_cfa (15, s390_arch_size == 64 ? 160 : 96); | |
2361 | } | |
2362 | ||
2363 | int | |
1df69f4f | 2364 | tc_s390_regname_to_dw2regnum (char *regname) |
75e21f08 JJ |
2365 | { |
2366 | int regnum = -1; | |
2367 | ||
2368 | if (regname[0] != 'c' && regname[0] != 'a') | |
2369 | { | |
2370 | regnum = reg_name_search (pre_defined_registers, REG_NAME_CNT, regname); | |
2371 | if (regname[0] == 'f' && regnum != -1) | |
2372 | regnum += 16; | |
2373 | } | |
2374 | else if (strcmp (regname, "ap") == 0) | |
2375 | regnum = 32; | |
2376 | else if (strcmp (regname, "cc") == 0) | |
2377 | regnum = 33; | |
2378 | return regnum; | |
2379 | } | |
55786da2 AK |
2380 | |
2381 | void | |
2382 | s390_elf_final_processing (void) | |
2383 | { | |
2384 | if (s390_arch_size == 32 && (current_mode_mask & (1 << S390_OPCODE_ZARCH))) | |
2385 | elf_elfheader (stdoutput)->e_flags |= EF_S390_HIGH_GPRS; | |
2386 | } |