1 /* tc-aarch64.c -- Assemble for the AArch64 ISA
3 Copyright (C) 2009-2018 Free Software Foundation, Inc.
4 Contributed by ARM Ltd.
6 This file is part of GAS.
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the license, or
11 (at your option) any later version.
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.
18 You should have received a copy of the GNU General Public License
19 along with this program; see the file COPYING3. If not,
20 see <http://www.gnu.org/licenses/>. */
25 #include "bfd_stdint.h"
27 #include "safe-ctype.h"
32 #include "elf/aarch64.h"
33 #include "dw2gencfi.h"
36 #include "dwarf2dbg.h"
38 /* Types of processor to assemble for. */
40 #define CPU_DEFAULT AARCH64_ARCH_V8
43 #define streq(a, b) (strcmp (a, b) == 0)
45 #define END_OF_INSN '\0'
47 static aarch64_feature_set cpu_variant;
49 /* Variables that we set while parsing command-line options. Once all
50 options have been read we re-process these values to set the real
52 static const aarch64_feature_set *mcpu_cpu_opt = NULL;
53 static const aarch64_feature_set *march_cpu_opt = NULL;
55 /* Constants for known architecture features. */
56 static const aarch64_feature_set cpu_default = CPU_DEFAULT;
59 /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */
60 static symbolS *GOT_symbol;
62 /* Which ABI to use. */
71 #define DEFAULT_ARCH "aarch64"
74 /* DEFAULT_ARCH is initialized in gas/configure.tgt. */
75 static const char *default_arch = DEFAULT_ARCH;
77 /* AArch64 ABI for the output file. */
78 static enum aarch64_abi_type aarch64_abi = AARCH64_ABI_NONE;
80 /* When non-zero, program to a 32-bit model, in which the C data types
81 int, long and all pointer types are 32-bit objects (ILP32); or to a
82 64-bit model, in which the C int type is 32-bits but the C long type
83 and all pointer types are 64-bit objects (LP64). */
84 #define ilp32_p (aarch64_abi == AARCH64_ABI_ILP32)
99 /* Bits for DEFINED field in vector_type_el. */
100 #define NTA_HASTYPE 1
101 #define NTA_HASINDEX 2
102 #define NTA_HASVARWIDTH 4
104 struct vector_type_el
106 enum vector_el_type type;
107 unsigned char defined;
112 #define FIXUP_F_HAS_EXPLICIT_SHIFT 0x00000001
116 bfd_reloc_code_real_type type;
119 enum aarch64_opnd opnd;
121 unsigned need_libopcodes_p : 1;
124 struct aarch64_instruction
126 /* libopcodes structure for instruction intermediate representation. */
128 /* Record assembly errors found during the parsing. */
131 enum aarch64_operand_error_kind kind;
134 /* The condition that appears in the assembly line. */
136 /* Relocation information (including the GAS internal fixup). */
138 /* Need to generate an immediate in the literal pool. */
139 unsigned gen_lit_pool : 1;
142 typedef struct aarch64_instruction aarch64_instruction;
144 static aarch64_instruction inst;
146 static bfd_boolean parse_operands (char *, const aarch64_opcode *);
147 static bfd_boolean programmer_friendly_fixup (aarch64_instruction *);
149 /* Diagnostics inline function utilities.
151 These are lightweight utilities which should only be called by parse_operands
152 and other parsers. GAS processes each assembly line by parsing it against
153 instruction template(s), in the case of multiple templates (for the same
154 mnemonic name), those templates are tried one by one until one succeeds or
155 all fail. An assembly line may fail a few templates before being
156 successfully parsed; an error saved here in most cases is not a user error
157 but an error indicating the current template is not the right template.
158 Therefore it is very important that errors can be saved at a low cost during
159 the parsing; we don't want to slow down the whole parsing by recording
160 non-user errors in detail.
162 Remember that the objective is to help GAS pick up the most appropriate
163 error message in the case of multiple templates, e.g. FMOV which has 8
169 inst.parsing_error.kind = AARCH64_OPDE_NIL;
170 inst.parsing_error.error = NULL;
173 static inline bfd_boolean
176 return inst.parsing_error.kind != AARCH64_OPDE_NIL;
179 static inline const char *
180 get_error_message (void)
182 return inst.parsing_error.error;
185 static inline enum aarch64_operand_error_kind
186 get_error_kind (void)
188 return inst.parsing_error.kind;
192 set_error (enum aarch64_operand_error_kind kind, const char *error)
194 inst.parsing_error.kind = kind;
195 inst.parsing_error.error = error;
199 set_recoverable_error (const char *error)
201 set_error (AARCH64_OPDE_RECOVERABLE, error);
204 /* Use the DESC field of the corresponding aarch64_operand entry to compose
205 the error message. */
207 set_default_error (void)
209 set_error (AARCH64_OPDE_SYNTAX_ERROR, NULL);
213 set_syntax_error (const char *error)
215 set_error (AARCH64_OPDE_SYNTAX_ERROR, error);
219 set_first_syntax_error (const char *error)
222 set_error (AARCH64_OPDE_SYNTAX_ERROR, error);
226 set_fatal_syntax_error (const char *error)
228 set_error (AARCH64_OPDE_FATAL_SYNTAX_ERROR, error);
231 /* Number of littlenums required to hold an extended precision number. */
232 #define MAX_LITTLENUMS 6
234 /* Return value for certain parsers when the parsing fails; those parsers
235 return the information of the parsed result, e.g. register number, on
237 #define PARSE_FAIL -1
239 /* This is an invalid condition code that means no conditional field is
241 #define COND_ALWAYS 0x10
245 const char *template;
251 const char *template;
258 bfd_reloc_code_real_type reloc;
261 /* Macros to define the register types and masks for the purpose
264 #undef AARCH64_REG_TYPES
265 #define AARCH64_REG_TYPES \
266 BASIC_REG_TYPE(R_32) /* w[0-30] */ \
267 BASIC_REG_TYPE(R_64) /* x[0-30] */ \
268 BASIC_REG_TYPE(SP_32) /* wsp */ \
269 BASIC_REG_TYPE(SP_64) /* sp */ \
270 BASIC_REG_TYPE(Z_32) /* wzr */ \
271 BASIC_REG_TYPE(Z_64) /* xzr */ \
272 BASIC_REG_TYPE(FP_B) /* b[0-31] *//* NOTE: keep FP_[BHSDQ] consecutive! */\
273 BASIC_REG_TYPE(FP_H) /* h[0-31] */ \
274 BASIC_REG_TYPE(FP_S) /* s[0-31] */ \
275 BASIC_REG_TYPE(FP_D) /* d[0-31] */ \
276 BASIC_REG_TYPE(FP_Q) /* q[0-31] */ \
277 BASIC_REG_TYPE(VN) /* v[0-31] */ \
278 BASIC_REG_TYPE(ZN) /* z[0-31] */ \
279 BASIC_REG_TYPE(PN) /* p[0-15] */ \
280 /* Typecheck: any 64-bit int reg (inc SP exc XZR). */ \
281 MULTI_REG_TYPE(R64_SP, REG_TYPE(R_64) | REG_TYPE(SP_64)) \
282 /* Typecheck: same, plus SVE registers. */ \
283 MULTI_REG_TYPE(SVE_BASE, REG_TYPE(R_64) | REG_TYPE(SP_64) \
285 /* Typecheck: x[0-30], w[0-30] or [xw]zr. */ \
286 MULTI_REG_TYPE(R_Z, REG_TYPE(R_32) | REG_TYPE(R_64) \
287 | REG_TYPE(Z_32) | REG_TYPE(Z_64)) \
288 /* Typecheck: same, plus SVE registers. */ \
289 MULTI_REG_TYPE(SVE_OFFSET, REG_TYPE(R_32) | REG_TYPE(R_64) \
290 | REG_TYPE(Z_32) | REG_TYPE(Z_64) \
292 /* Typecheck: x[0-30], w[0-30] or {w}sp. */ \
293 MULTI_REG_TYPE(R_SP, REG_TYPE(R_32) | REG_TYPE(R_64) \
294 | REG_TYPE(SP_32) | REG_TYPE(SP_64)) \
295 /* Typecheck: any int (inc {W}SP inc [WX]ZR). */ \
296 MULTI_REG_TYPE(R_Z_SP, REG_TYPE(R_32) | REG_TYPE(R_64) \
297 | REG_TYPE(SP_32) | REG_TYPE(SP_64) \
298 | REG_TYPE(Z_32) | REG_TYPE(Z_64)) \
299 /* Typecheck: any [BHSDQ]P FP. */ \
300 MULTI_REG_TYPE(BHSDQ, REG_TYPE(FP_B) | REG_TYPE(FP_H) \
301 | REG_TYPE(FP_S) | REG_TYPE(FP_D) | REG_TYPE(FP_Q)) \
302 /* Typecheck: any int or [BHSDQ]P FP or V reg (exc SP inc [WX]ZR). */ \
303 MULTI_REG_TYPE(R_Z_BHSDQ_V, REG_TYPE(R_32) | REG_TYPE(R_64) \
304 | REG_TYPE(Z_32) | REG_TYPE(Z_64) | REG_TYPE(VN) \
305 | REG_TYPE(FP_B) | REG_TYPE(FP_H) \
306 | REG_TYPE(FP_S) | REG_TYPE(FP_D) | REG_TYPE(FP_Q)) \
307 /* Typecheck: as above, but also Zn, Pn, and {W}SP. This should only \
308 be used for SVE instructions, since Zn and Pn are valid symbols \
309 in other contexts. */ \
310 MULTI_REG_TYPE(R_Z_SP_BHSDQ_VZP, REG_TYPE(R_32) | REG_TYPE(R_64) \
311 | REG_TYPE(SP_32) | REG_TYPE(SP_64) \
312 | REG_TYPE(Z_32) | REG_TYPE(Z_64) | REG_TYPE(VN) \
313 | REG_TYPE(FP_B) | REG_TYPE(FP_H) \
314 | REG_TYPE(FP_S) | REG_TYPE(FP_D) | REG_TYPE(FP_Q) \
315 | REG_TYPE(ZN) | REG_TYPE(PN)) \
316 /* Any integer register; used for error messages only. */ \
317 MULTI_REG_TYPE(R_N, REG_TYPE(R_32) | REG_TYPE(R_64) \
318 | REG_TYPE(SP_32) | REG_TYPE(SP_64) \
319 | REG_TYPE(Z_32) | REG_TYPE(Z_64)) \
320 /* Pseudo type to mark the end of the enumerator sequence. */ \
323 #undef BASIC_REG_TYPE
324 #define BASIC_REG_TYPE(T) REG_TYPE_##T,
325 #undef MULTI_REG_TYPE
326 #define MULTI_REG_TYPE(T,V) BASIC_REG_TYPE(T)
328 /* Register type enumerators. */
329 typedef enum aarch64_reg_type_
331 /* A list of REG_TYPE_*. */
335 #undef BASIC_REG_TYPE
336 #define BASIC_REG_TYPE(T) 1 << REG_TYPE_##T,
338 #define REG_TYPE(T) (1 << REG_TYPE_##T)
339 #undef MULTI_REG_TYPE
340 #define MULTI_REG_TYPE(T,V) V,
342 /* Structure for a hash table entry for a register. */
346 unsigned char number;
347 ENUM_BITFIELD (aarch64_reg_type_) type : 8;
348 unsigned char builtin;
351 /* Values indexed by aarch64_reg_type to assist the type checking. */
352 static const unsigned reg_type_masks[] =
357 #undef BASIC_REG_TYPE
359 #undef MULTI_REG_TYPE
360 #undef AARCH64_REG_TYPES
362 /* Diagnostics used when we don't get a register of the expected type.
363 Note: this has to synchronized with aarch64_reg_type definitions
366 get_reg_expected_msg (aarch64_reg_type reg_type)
373 msg = N_("integer 32-bit register expected");
376 msg = N_("integer 64-bit register expected");
379 msg = N_("integer register expected");
381 case REG_TYPE_R64_SP:
382 msg = N_("64-bit integer or SP register expected");
384 case REG_TYPE_SVE_BASE:
385 msg = N_("base register expected");
388 msg = N_("integer or zero register expected");
390 case REG_TYPE_SVE_OFFSET:
391 msg = N_("offset register expected");
394 msg = N_("integer or SP register expected");
396 case REG_TYPE_R_Z_SP:
397 msg = N_("integer, zero or SP register expected");
400 msg = N_("8-bit SIMD scalar register expected");
403 msg = N_("16-bit SIMD scalar or floating-point half precision "
404 "register expected");
407 msg = N_("32-bit SIMD scalar or floating-point single precision "
408 "register expected");
411 msg = N_("64-bit SIMD scalar or floating-point double precision "
412 "register expected");
415 msg = N_("128-bit SIMD scalar or floating-point quad precision "
416 "register expected");
418 case REG_TYPE_R_Z_BHSDQ_V:
419 case REG_TYPE_R_Z_SP_BHSDQ_VZP:
420 msg = N_("register expected");
422 case REG_TYPE_BHSDQ: /* any [BHSDQ]P FP */
423 msg = N_("SIMD scalar or floating-point register expected");
425 case REG_TYPE_VN: /* any V reg */
426 msg = N_("vector register expected");
429 msg = N_("SVE vector register expected");
432 msg = N_("SVE predicate register expected");
435 as_fatal (_("invalid register type %d"), reg_type);
440 /* Some well known registers that we refer to directly elsewhere. */
443 /* Instructions take 4 bytes in the object file. */
446 static struct hash_control *aarch64_ops_hsh;
447 static struct hash_control *aarch64_cond_hsh;
448 static struct hash_control *aarch64_shift_hsh;
449 static struct hash_control *aarch64_sys_regs_hsh;
450 static struct hash_control *aarch64_pstatefield_hsh;
451 static struct hash_control *aarch64_sys_regs_ic_hsh;
452 static struct hash_control *aarch64_sys_regs_dc_hsh;
453 static struct hash_control *aarch64_sys_regs_at_hsh;
454 static struct hash_control *aarch64_sys_regs_tlbi_hsh;
455 static struct hash_control *aarch64_reg_hsh;
456 static struct hash_control *aarch64_barrier_opt_hsh;
457 static struct hash_control *aarch64_nzcv_hsh;
458 static struct hash_control *aarch64_pldop_hsh;
459 static struct hash_control *aarch64_hint_opt_hsh;
461 /* Stuff needed to resolve the label ambiguity
470 static symbolS *last_label_seen;
472 /* Literal pool structure. Held on a per-section
473 and per-sub-section basis. */
475 #define MAX_LITERAL_POOL_SIZE 1024
476 typedef struct literal_expression
479 /* If exp.op == O_big then this bignum holds a copy of the global bignum value. */
480 LITTLENUM_TYPE * bignum;
481 } literal_expression;
483 typedef struct literal_pool
485 literal_expression literals[MAX_LITERAL_POOL_SIZE];
486 unsigned int next_free_entry;
492 struct literal_pool *next;
495 /* Pointer to a linked list of literal pools. */
496 static literal_pool *list_of_pools = NULL;
500 /* This array holds the chars that always start a comment. If the
501 pre-processor is disabled, these aren't very useful. */
502 const char comment_chars[] = "";
504 /* This array holds the chars that only start a comment at the beginning of
505 a line. If the line seems to have the form '# 123 filename'
506 .line and .file directives will appear in the pre-processed output. */
507 /* Note that input_file.c hand checks for '#' at the beginning of the
508 first line of the input file. This is because the compiler outputs
509 #NO_APP at the beginning of its output. */
510 /* Also note that comments like this one will always work. */
511 const char line_comment_chars[] = "#";
513 const char line_separator_chars[] = ";";
515 /* Chars that can be used to separate mant
516 from exp in floating point numbers. */
517 const char EXP_CHARS[] = "eE";
519 /* Chars that mean this number is a floating point constant. */
523 const char FLT_CHARS[] = "rRsSfFdDxXeEpP";
525 /* Prefix character that indicates the start of an immediate value. */
526 #define is_immediate_prefix(C) ((C) == '#')
528 /* Separator character handling. */
530 #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0)
532 static inline bfd_boolean
533 skip_past_char (char **str, char c)
544 #define skip_past_comma(str) skip_past_char (str, ',')
546 /* Arithmetic expressions (possibly involving symbols). */
548 static bfd_boolean in_my_get_expression_p = FALSE;
550 /* Third argument to my_get_expression. */
551 #define GE_NO_PREFIX 0
552 #define GE_OPT_PREFIX 1
554 /* Return TRUE if the string pointed by *STR is successfully parsed
555 as an valid expression; *EP will be filled with the information of
556 such an expression. Otherwise return FALSE. */
559 my_get_expression (expressionS * ep, char **str, int prefix_mode,
564 int prefix_present_p = 0;
571 if (is_immediate_prefix (**str))
574 prefix_present_p = 1;
581 memset (ep, 0, sizeof (expressionS));
583 save_in = input_line_pointer;
584 input_line_pointer = *str;
585 in_my_get_expression_p = TRUE;
586 seg = expression (ep);
587 in_my_get_expression_p = FALSE;
589 if (ep->X_op == O_illegal || (reject_absent && ep->X_op == O_absent))
591 /* We found a bad expression in md_operand(). */
592 *str = input_line_pointer;
593 input_line_pointer = save_in;
594 if (prefix_present_p && ! error_p ())
595 set_fatal_syntax_error (_("bad expression"));
597 set_first_syntax_error (_("bad expression"));
602 if (seg != absolute_section
603 && seg != text_section
604 && seg != data_section
605 && seg != bss_section && seg != undefined_section)
607 set_syntax_error (_("bad segment"));
608 *str = input_line_pointer;
609 input_line_pointer = save_in;
616 *str = input_line_pointer;
617 input_line_pointer = save_in;
621 /* Turn a string in input_line_pointer into a floating point constant
622 of type TYPE, and store the appropriate bytes in *LITP. The number
623 of LITTLENUMS emitted is stored in *SIZEP. An error message is
624 returned, or NULL on OK. */
627 md_atof (int type, char *litP, int *sizeP)
629 return ieee_md_atof (type, litP, sizeP, target_big_endian);
632 /* We handle all bad expressions here, so that we can report the faulty
633 instruction in the error message. */
635 md_operand (expressionS * exp)
637 if (in_my_get_expression_p)
638 exp->X_op = O_illegal;
641 /* Immediate values. */
643 /* Errors may be set multiple times during parsing or bit encoding
644 (particularly in the Neon bits), but usually the earliest error which is set
645 will be the most meaningful. Avoid overwriting it with later (cascading)
646 errors by calling this function. */
649 first_error (const char *error)
652 set_syntax_error (error);
655 /* Similar to first_error, but this function accepts formatted error
658 first_error_fmt (const char *format, ...)
663 /* N.B. this single buffer will not cause error messages for different
664 instructions to pollute each other; this is because at the end of
665 processing of each assembly line, error message if any will be
666 collected by as_bad. */
667 static char buffer[size];
671 int ret ATTRIBUTE_UNUSED;
672 va_start (args, format);
673 ret = vsnprintf (buffer, size, format, args);
674 know (ret <= size - 1 && ret >= 0);
676 set_syntax_error (buffer);
680 /* Register parsing. */
682 /* Generic register parser which is called by other specialized
684 CCP points to what should be the beginning of a register name.
685 If it is indeed a valid register name, advance CCP over it and
686 return the reg_entry structure; otherwise return NULL.
687 It does not issue diagnostics. */
690 parse_reg (char **ccp)
696 #ifdef REGISTER_PREFIX
697 if (*start != REGISTER_PREFIX)
703 if (!ISALPHA (*p) || !is_name_beginner (*p))
708 while (ISALPHA (*p) || ISDIGIT (*p) || *p == '_');
710 reg = (reg_entry *) hash_find_n (aarch64_reg_hsh, start, p - start);
719 /* Return TRUE if REG->TYPE is a valid type of TYPE; otherwise
722 aarch64_check_reg_type (const reg_entry *reg, aarch64_reg_type type)
724 return (reg_type_masks[type] & (1 << reg->type)) != 0;
727 /* Try to parse a base or offset register. Allow SVE base and offset
728 registers if REG_TYPE includes SVE registers. Return the register
729 entry on success, setting *QUALIFIER to the register qualifier.
730 Return null otherwise.
732 Note that this function does not issue any diagnostics. */
734 static const reg_entry *
735 aarch64_addr_reg_parse (char **ccp, aarch64_reg_type reg_type,
736 aarch64_opnd_qualifier_t *qualifier)
739 const reg_entry *reg = parse_reg (&str);
749 *qualifier = AARCH64_OPND_QLF_W;
755 *qualifier = AARCH64_OPND_QLF_X;
759 if ((reg_type_masks[reg_type] & (1 << REG_TYPE_ZN)) == 0
762 switch (TOLOWER (str[1]))
765 *qualifier = AARCH64_OPND_QLF_S_S;
768 *qualifier = AARCH64_OPND_QLF_S_D;
785 /* Try to parse a base or offset register. Return the register entry
786 on success, setting *QUALIFIER to the register qualifier. Return null
789 Note that this function does not issue any diagnostics. */
791 static const reg_entry *
792 aarch64_reg_parse_32_64 (char **ccp, aarch64_opnd_qualifier_t *qualifier)
794 return aarch64_addr_reg_parse (ccp, REG_TYPE_R_Z_SP, qualifier);
797 /* Parse the qualifier of a vector register or vector element of type
798 REG_TYPE. Fill in *PARSED_TYPE and return TRUE if the parsing
799 succeeds; otherwise return FALSE.
801 Accept only one occurrence of:
802 4b 8b 16b 2h 4h 8h 2s 4s 1d 2d
805 parse_vector_type_for_operand (aarch64_reg_type reg_type,
806 struct vector_type_el *parsed_type, char **str)
810 unsigned element_size;
811 enum vector_el_type type;
814 gas_assert (*ptr == '.');
817 if (reg_type == REG_TYPE_ZN || reg_type == REG_TYPE_PN || !ISDIGIT (*ptr))
822 width = strtoul (ptr, &ptr, 10);
823 if (width != 1 && width != 2 && width != 4 && width != 8 && width != 16)
825 first_error_fmt (_("bad size %d in vector width specifier"), width);
830 switch (TOLOWER (*ptr))
849 if (reg_type == REG_TYPE_ZN || width == 1)
858 first_error_fmt (_("unexpected character `%c' in element size"), *ptr);
860 first_error (_("missing element size"));
863 if (width != 0 && width * element_size != 64
864 && width * element_size != 128
865 && !(width == 2 && element_size == 16)
866 && !(width == 4 && element_size == 8))
869 ("invalid element size %d and vector size combination %c"),
875 parsed_type->type = type;
876 parsed_type->width = width;
883 /* *STR contains an SVE zero/merge predication suffix. Parse it into
884 *PARSED_TYPE and point *STR at the end of the suffix. */
887 parse_predication_for_operand (struct vector_type_el *parsed_type, char **str)
892 gas_assert (*ptr == '/');
894 switch (TOLOWER (*ptr))
897 parsed_type->type = NT_zero;
900 parsed_type->type = NT_merge;
903 if (*ptr != '\0' && *ptr != ',')
904 first_error_fmt (_("unexpected character `%c' in predication type"),
907 first_error (_("missing predication type"));
910 parsed_type->width = 0;
915 /* Parse a register of the type TYPE.
917 Return PARSE_FAIL if the string pointed by *CCP is not a valid register
918 name or the parsed register is not of TYPE.
920 Otherwise return the register number, and optionally fill in the actual
921 type of the register in *RTYPE when multiple alternatives were given, and
922 return the register shape and element index information in *TYPEINFO.
924 IN_REG_LIST should be set with TRUE if the caller is parsing a register
928 parse_typed_reg (char **ccp, aarch64_reg_type type, aarch64_reg_type *rtype,
929 struct vector_type_el *typeinfo, bfd_boolean in_reg_list)
932 const reg_entry *reg = parse_reg (&str);
933 struct vector_type_el atype;
934 struct vector_type_el parsetype;
935 bfd_boolean is_typed_vecreg = FALSE;
938 atype.type = NT_invtype;
946 set_default_error ();
950 if (! aarch64_check_reg_type (reg, type))
952 DEBUG_TRACE ("reg type check failed");
953 set_default_error ();
958 if ((type == REG_TYPE_VN || type == REG_TYPE_ZN || type == REG_TYPE_PN)
959 && (*str == '.' || (type == REG_TYPE_PN && *str == '/')))
963 if (!parse_vector_type_for_operand (type, &parsetype, &str))
968 if (!parse_predication_for_operand (&parsetype, &str))
972 /* Register if of the form Vn.[bhsdq]. */
973 is_typed_vecreg = TRUE;
975 if (type == REG_TYPE_ZN || type == REG_TYPE_PN)
977 /* The width is always variable; we don't allow an integer width
979 gas_assert (parsetype.width == 0);
980 atype.defined |= NTA_HASVARWIDTH | NTA_HASTYPE;
982 else if (parsetype.width == 0)
983 /* Expect index. In the new scheme we cannot have
984 Vn.[bhsdq] represent a scalar. Therefore any
985 Vn.[bhsdq] should have an index following it.
986 Except in reglists of course. */
987 atype.defined |= NTA_HASINDEX;
989 atype.defined |= NTA_HASTYPE;
991 atype.type = parsetype.type;
992 atype.width = parsetype.width;
995 if (skip_past_char (&str, '['))
999 /* Reject Sn[index] syntax. */
1000 if (!is_typed_vecreg)
1002 first_error (_("this type of register can't be indexed"));
1008 first_error (_("index not allowed inside register list"));
1012 atype.defined |= NTA_HASINDEX;
1014 my_get_expression (&exp, &str, GE_NO_PREFIX, 1);
1016 if (exp.X_op != O_constant)
1018 first_error (_("constant expression required"));
1022 if (! skip_past_char (&str, ']'))
1025 atype.index = exp.X_add_number;
1027 else if (!in_reg_list && (atype.defined & NTA_HASINDEX) != 0)
1029 /* Indexed vector register expected. */
1030 first_error (_("indexed vector register expected"));
1034 /* A vector reg Vn should be typed or indexed. */
1035 if (type == REG_TYPE_VN && atype.defined == 0)
1037 first_error (_("invalid use of vector register"));
1053 Return the register number on success; return PARSE_FAIL otherwise.
1055 If RTYPE is not NULL, return in *RTYPE the (possibly restricted) type of
1056 the register (e.g. NEON double or quad reg when either has been requested).
1058 If this is a NEON vector register with additional type information, fill
1059 in the struct pointed to by VECTYPE (if non-NULL).
1061 This parser does not handle register list. */
1064 aarch64_reg_parse (char **ccp, aarch64_reg_type type,
1065 aarch64_reg_type *rtype, struct vector_type_el *vectype)
1067 struct vector_type_el atype;
1069 int reg = parse_typed_reg (&str, type, rtype, &atype,
1070 /*in_reg_list= */ FALSE);
1072 if (reg == PARSE_FAIL)
1083 static inline bfd_boolean
1084 eq_vector_type_el (struct vector_type_el e1, struct vector_type_el e2)
1088 && e1.defined == e2.defined
1089 && e1.width == e2.width && e1.index == e2.index;
1092 /* This function parses a list of vector registers of type TYPE.
1093 On success, it returns the parsed register list information in the
1094 following encoded format:
1096 bit 18-22 | 13-17 | 7-11 | 2-6 | 0-1
1097 4th regno | 3rd regno | 2nd regno | 1st regno | num_of_reg
1099 The information of the register shape and/or index is returned in
1102 It returns PARSE_FAIL if the register list is invalid.
1104 The list contains one to four registers.
1105 Each register can be one of:
1108 All <T> should be identical.
1109 All <index> should be identical.
1110 There are restrictions on <Vt> numbers which are checked later
1111 (by reg_list_valid_p). */
1114 parse_vector_reg_list (char **ccp, aarch64_reg_type type,
1115 struct vector_type_el *vectype)
1119 struct vector_type_el typeinfo, typeinfo_first;
1124 bfd_boolean error = FALSE;
1125 bfd_boolean expect_index = FALSE;
1129 set_syntax_error (_("expecting {"));
1135 typeinfo_first.defined = 0;
1136 typeinfo_first.type = NT_invtype;
1137 typeinfo_first.width = -1;
1138 typeinfo_first.index = 0;
1147 str++; /* skip over '-' */
1150 val = parse_typed_reg (&str, type, NULL, &typeinfo,
1151 /*in_reg_list= */ TRUE);
1152 if (val == PARSE_FAIL)
1154 set_first_syntax_error (_("invalid vector register in list"));
1158 /* reject [bhsd]n */
1159 if (type == REG_TYPE_VN && typeinfo.defined == 0)
1161 set_first_syntax_error (_("invalid scalar register in list"));
1166 if (typeinfo.defined & NTA_HASINDEX)
1167 expect_index = TRUE;
1171 if (val < val_range)
1173 set_first_syntax_error
1174 (_("invalid range in vector register list"));
1183 typeinfo_first = typeinfo;
1184 else if (! eq_vector_type_el (typeinfo_first, typeinfo))
1186 set_first_syntax_error
1187 (_("type mismatch in vector register list"));
1192 for (i = val_range; i <= val; i++)
1194 ret_val |= i << (5 * nb_regs);
1199 while (skip_past_comma (&str) || (in_range = 1, *str == '-'));
1201 skip_whitespace (str);
1204 set_first_syntax_error (_("end of vector register list not found"));
1209 skip_whitespace (str);
1213 if (skip_past_char (&str, '['))
1217 my_get_expression (&exp, &str, GE_NO_PREFIX, 1);
1218 if (exp.X_op != O_constant)
1220 set_first_syntax_error (_("constant expression required."));
1223 if (! skip_past_char (&str, ']'))
1226 typeinfo_first.index = exp.X_add_number;
1230 set_first_syntax_error (_("expected index"));
1237 set_first_syntax_error (_("too many registers in vector register list"));
1240 else if (nb_regs == 0)
1242 set_first_syntax_error (_("empty vector register list"));
1248 *vectype = typeinfo_first;
1250 return error ? PARSE_FAIL : (ret_val << 2) | (nb_regs - 1);
1253 /* Directives: register aliases. */
1256 insert_reg_alias (char *str, int number, aarch64_reg_type type)
1261 if ((new = hash_find (aarch64_reg_hsh, str)) != 0)
1264 as_warn (_("ignoring attempt to redefine built-in register '%s'"),
1267 /* Only warn about a redefinition if it's not defined as the
1269 else if (new->number != number || new->type != type)
1270 as_warn (_("ignoring redefinition of register alias '%s'"), str);
1275 name = xstrdup (str);
1276 new = XNEW (reg_entry);
1279 new->number = number;
1281 new->builtin = FALSE;
1283 if (hash_insert (aarch64_reg_hsh, name, (void *) new))
1289 /* Look for the .req directive. This is of the form:
1291 new_register_name .req existing_register_name
1293 If we find one, or if it looks sufficiently like one that we want to
1294 handle any error here, return TRUE. Otherwise return FALSE. */
1297 create_register_alias (char *newname, char *p)
1299 const reg_entry *old;
1300 char *oldname, *nbuf;
1303 /* The input scrubber ensures that whitespace after the mnemonic is
1304 collapsed to single spaces. */
1306 if (strncmp (oldname, " .req ", 6) != 0)
1310 if (*oldname == '\0')
1313 old = hash_find (aarch64_reg_hsh, oldname);
1316 as_warn (_("unknown register '%s' -- .req ignored"), oldname);
1320 /* If TC_CASE_SENSITIVE is defined, then newname already points to
1321 the desired alias name, and p points to its end. If not, then
1322 the desired alias name is in the global original_case_string. */
1323 #ifdef TC_CASE_SENSITIVE
1326 newname = original_case_string;
1327 nlen = strlen (newname);
1330 nbuf = xmemdup0 (newname, nlen);
1332 /* Create aliases under the new name as stated; an all-lowercase
1333 version of the new name; and an all-uppercase version of the new
1335 if (insert_reg_alias (nbuf, old->number, old->type) != NULL)
1337 for (p = nbuf; *p; p++)
1340 if (strncmp (nbuf, newname, nlen))
1342 /* If this attempt to create an additional alias fails, do not bother
1343 trying to create the all-lower case alias. We will fail and issue
1344 a second, duplicate error message. This situation arises when the
1345 programmer does something like:
1348 The second .req creates the "Foo" alias but then fails to create
1349 the artificial FOO alias because it has already been created by the
1351 if (insert_reg_alias (nbuf, old->number, old->type) == NULL)
1358 for (p = nbuf; *p; p++)
1361 if (strncmp (nbuf, newname, nlen))
1362 insert_reg_alias (nbuf, old->number, old->type);
1369 /* Should never be called, as .req goes between the alias and the
1370 register name, not at the beginning of the line. */
1372 s_req (int a ATTRIBUTE_UNUSED)
1374 as_bad (_("invalid syntax for .req directive"));
1377 /* The .unreq directive deletes an alias which was previously defined
1378 by .req. For example:
1384 s_unreq (int a ATTRIBUTE_UNUSED)
1389 name = input_line_pointer;
1391 while (*input_line_pointer != 0
1392 && *input_line_pointer != ' ' && *input_line_pointer != '\n')
1393 ++input_line_pointer;
1395 saved_char = *input_line_pointer;
1396 *input_line_pointer = 0;
1399 as_bad (_("invalid syntax for .unreq directive"));
1402 reg_entry *reg = hash_find (aarch64_reg_hsh, name);
1405 as_bad (_("unknown register alias '%s'"), name);
1406 else if (reg->builtin)
1407 as_warn (_("ignoring attempt to undefine built-in register '%s'"),
1414 hash_delete (aarch64_reg_hsh, name, FALSE);
1415 free ((char *) reg->name);
1418 /* Also locate the all upper case and all lower case versions.
1419 Do not complain if we cannot find one or the other as it
1420 was probably deleted above. */
1422 nbuf = strdup (name);
1423 for (p = nbuf; *p; p++)
1425 reg = hash_find (aarch64_reg_hsh, nbuf);
1428 hash_delete (aarch64_reg_hsh, nbuf, FALSE);
1429 free ((char *) reg->name);
1433 for (p = nbuf; *p; p++)
1435 reg = hash_find (aarch64_reg_hsh, nbuf);
1438 hash_delete (aarch64_reg_hsh, nbuf, FALSE);
1439 free ((char *) reg->name);
1447 *input_line_pointer = saved_char;
1448 demand_empty_rest_of_line ();
1451 /* Directives: Instruction set selection. */
1454 /* This code is to handle mapping symbols as defined in the ARM AArch64 ELF
1455 spec. (See "Mapping symbols", section 4.5.4, ARM AAELF64 version 0.05).
1456 Note that previously, $a and $t has type STT_FUNC (BSF_OBJECT flag),
1457 and $d has type STT_OBJECT (BSF_OBJECT flag). Now all three are untyped. */
1459 /* Create a new mapping symbol for the transition to STATE. */
1462 make_mapping_symbol (enum mstate state, valueT value, fragS * frag)
1465 const char *symname;
1472 type = BSF_NO_FLAGS;
1476 type = BSF_NO_FLAGS;
1482 symbolP = symbol_new (symname, now_seg, value, frag);
1483 symbol_get_bfdsym (symbolP)->flags |= type | BSF_LOCAL;
1485 /* Save the mapping symbols for future reference. Also check that
1486 we do not place two mapping symbols at the same offset within a
1487 frag. We'll handle overlap between frags in
1488 check_mapping_symbols.
1490 If .fill or other data filling directive generates zero sized data,
1491 the mapping symbol for the following code will have the same value
1492 as the one generated for the data filling directive. In this case,
1493 we replace the old symbol with the new one at the same address. */
1496 if (frag->tc_frag_data.first_map != NULL)
1498 know (S_GET_VALUE (frag->tc_frag_data.first_map) == 0);
1499 symbol_remove (frag->tc_frag_data.first_map, &symbol_rootP,
1502 frag->tc_frag_data.first_map = symbolP;
1504 if (frag->tc_frag_data.last_map != NULL)
1506 know (S_GET_VALUE (frag->tc_frag_data.last_map) <=
1507 S_GET_VALUE (symbolP));
1508 if (S_GET_VALUE (frag->tc_frag_data.last_map) == S_GET_VALUE (symbolP))
1509 symbol_remove (frag->tc_frag_data.last_map, &symbol_rootP,
1512 frag->tc_frag_data.last_map = symbolP;
1515 /* We must sometimes convert a region marked as code to data during
1516 code alignment, if an odd number of bytes have to be padded. The
1517 code mapping symbol is pushed to an aligned address. */
1520 insert_data_mapping_symbol (enum mstate state,
1521 valueT value, fragS * frag, offsetT bytes)
1523 /* If there was already a mapping symbol, remove it. */
1524 if (frag->tc_frag_data.last_map != NULL
1525 && S_GET_VALUE (frag->tc_frag_data.last_map) ==
1526 frag->fr_address + value)
1528 symbolS *symp = frag->tc_frag_data.last_map;
1532 know (frag->tc_frag_data.first_map == symp);
1533 frag->tc_frag_data.first_map = NULL;
1535 frag->tc_frag_data.last_map = NULL;
1536 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1539 make_mapping_symbol (MAP_DATA, value, frag);
1540 make_mapping_symbol (state, value + bytes, frag);
1543 static void mapping_state_2 (enum mstate state, int max_chars);
1545 /* Set the mapping state to STATE. Only call this when about to
1546 emit some STATE bytes to the file. */
1549 mapping_state (enum mstate state)
1551 enum mstate mapstate = seg_info (now_seg)->tc_segment_info_data.mapstate;
1553 if (state == MAP_INSN)
1554 /* AArch64 instructions require 4-byte alignment. When emitting
1555 instructions into any section, record the appropriate section
1557 record_alignment (now_seg, 2);
1559 if (mapstate == state)
1560 /* The mapping symbol has already been emitted.
1561 There is nothing else to do. */
1564 #define TRANSITION(from, to) (mapstate == (from) && state == (to))
1565 if (TRANSITION (MAP_UNDEFINED, MAP_DATA) && !subseg_text_p (now_seg))
1566 /* Emit MAP_DATA within executable section in order. Otherwise, it will be
1567 evaluated later in the next else. */
1569 else if (TRANSITION (MAP_UNDEFINED, MAP_INSN))
1571 /* Only add the symbol if the offset is > 0:
1572 if we're at the first frag, check it's size > 0;
1573 if we're not at the first frag, then for sure
1574 the offset is > 0. */
1575 struct frag *const frag_first = seg_info (now_seg)->frchainP->frch_root;
1576 const int add_symbol = (frag_now != frag_first)
1577 || (frag_now_fix () > 0);
1580 make_mapping_symbol (MAP_DATA, (valueT) 0, frag_first);
1584 mapping_state_2 (state, 0);
1587 /* Same as mapping_state, but MAX_CHARS bytes have already been
1588 allocated. Put the mapping symbol that far back. */
1591 mapping_state_2 (enum mstate state, int max_chars)
1593 enum mstate mapstate = seg_info (now_seg)->tc_segment_info_data.mapstate;
1595 if (!SEG_NORMAL (now_seg))
1598 if (mapstate == state)
1599 /* The mapping symbol has already been emitted.
1600 There is nothing else to do. */
1603 seg_info (now_seg)->tc_segment_info_data.mapstate = state;
1604 make_mapping_symbol (state, (valueT) frag_now_fix () - max_chars, frag_now);
1607 #define mapping_state(x) /* nothing */
1608 #define mapping_state_2(x, y) /* nothing */
1611 /* Directives: sectioning and alignment. */
1614 s_bss (int ignore ATTRIBUTE_UNUSED)
1616 /* We don't support putting frags in the BSS segment, we fake it by
1617 marking in_bss, then looking at s_skip for clues. */
1618 subseg_set (bss_section, 0);
1619 demand_empty_rest_of_line ();
1620 mapping_state (MAP_DATA);
1624 s_even (int ignore ATTRIBUTE_UNUSED)
1626 /* Never make frag if expect extra pass. */
1628 frag_align (1, 0, 0);
1630 record_alignment (now_seg, 1);
1632 demand_empty_rest_of_line ();
1635 /* Directives: Literal pools. */
1637 static literal_pool *
1638 find_literal_pool (int size)
1642 for (pool = list_of_pools; pool != NULL; pool = pool->next)
1644 if (pool->section == now_seg
1645 && pool->sub_section == now_subseg && pool->size == size)
1652 static literal_pool *
1653 find_or_make_literal_pool (int size)
1655 /* Next literal pool ID number. */
1656 static unsigned int latest_pool_num = 1;
1659 pool = find_literal_pool (size);
1663 /* Create a new pool. */
1664 pool = XNEW (literal_pool);
1668 /* Currently we always put the literal pool in the current text
1669 section. If we were generating "small" model code where we
1670 knew that all code and initialised data was within 1MB then
1671 we could output literals to mergeable, read-only data
1674 pool->next_free_entry = 0;
1675 pool->section = now_seg;
1676 pool->sub_section = now_subseg;
1678 pool->next = list_of_pools;
1679 pool->symbol = NULL;
1681 /* Add it to the list. */
1682 list_of_pools = pool;
1685 /* New pools, and emptied pools, will have a NULL symbol. */
1686 if (pool->symbol == NULL)
1688 pool->symbol = symbol_create (FAKE_LABEL_NAME, undefined_section,
1689 (valueT) 0, &zero_address_frag);
1690 pool->id = latest_pool_num++;
1697 /* Add the literal of size SIZE in *EXP to the relevant literal pool.
1698 Return TRUE on success, otherwise return FALSE. */
1700 add_to_lit_pool (expressionS *exp, int size)
1705 pool = find_or_make_literal_pool (size);
1707 /* Check if this literal value is already in the pool. */
1708 for (entry = 0; entry < pool->next_free_entry; entry++)
1710 expressionS * litexp = & pool->literals[entry].exp;
1712 if ((litexp->X_op == exp->X_op)
1713 && (exp->X_op == O_constant)
1714 && (litexp->X_add_number == exp->X_add_number)
1715 && (litexp->X_unsigned == exp->X_unsigned))
1718 if ((litexp->X_op == exp->X_op)
1719 && (exp->X_op == O_symbol)
1720 && (litexp->X_add_number == exp->X_add_number)
1721 && (litexp->X_add_symbol == exp->X_add_symbol)
1722 && (litexp->X_op_symbol == exp->X_op_symbol))
1726 /* Do we need to create a new entry? */
1727 if (entry == pool->next_free_entry)
1729 if (entry >= MAX_LITERAL_POOL_SIZE)
1731 set_syntax_error (_("literal pool overflow"));
1735 pool->literals[entry].exp = *exp;
1736 pool->next_free_entry += 1;
1737 if (exp->X_op == O_big)
1739 /* PR 16688: Bignums are held in a single global array. We must
1740 copy and preserve that value now, before it is overwritten. */
1741 pool->literals[entry].bignum = XNEWVEC (LITTLENUM_TYPE,
1743 memcpy (pool->literals[entry].bignum, generic_bignum,
1744 CHARS_PER_LITTLENUM * exp->X_add_number);
1747 pool->literals[entry].bignum = NULL;
1750 exp->X_op = O_symbol;
1751 exp->X_add_number = ((int) entry) * size;
1752 exp->X_add_symbol = pool->symbol;
1757 /* Can't use symbol_new here, so have to create a symbol and then at
1758 a later date assign it a value. That's what these functions do. */
1761 symbol_locate (symbolS * symbolP,
1762 const char *name,/* It is copied, the caller can modify. */
1763 segT segment, /* Segment identifier (SEG_<something>). */
1764 valueT valu, /* Symbol value. */
1765 fragS * frag) /* Associated fragment. */
1768 char *preserved_copy_of_name;
1770 name_length = strlen (name) + 1; /* +1 for \0. */
1771 obstack_grow (¬es, name, name_length);
1772 preserved_copy_of_name = obstack_finish (¬es);
1774 #ifdef tc_canonicalize_symbol_name
1775 preserved_copy_of_name =
1776 tc_canonicalize_symbol_name (preserved_copy_of_name);
1779 S_SET_NAME (symbolP, preserved_copy_of_name);
1781 S_SET_SEGMENT (symbolP, segment);
1782 S_SET_VALUE (symbolP, valu);
1783 symbol_clear_list_pointers (symbolP);
1785 symbol_set_frag (symbolP, frag);
1787 /* Link to end of symbol chain. */
1789 extern int symbol_table_frozen;
1791 if (symbol_table_frozen)
1795 symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP);
1797 obj_symbol_new_hook (symbolP);
1799 #ifdef tc_symbol_new_hook
1800 tc_symbol_new_hook (symbolP);
1804 verify_symbol_chain (symbol_rootP, symbol_lastP);
1805 #endif /* DEBUG_SYMS */
1810 s_ltorg (int ignored ATTRIBUTE_UNUSED)
1817 for (align = 2; align <= 4; align++)
1819 int size = 1 << align;
1821 pool = find_literal_pool (size);
1822 if (pool == NULL || pool->symbol == NULL || pool->next_free_entry == 0)
1825 /* Align pool as you have word accesses.
1826 Only make a frag if we have to. */
1828 frag_align (align, 0, 0);
1830 mapping_state (MAP_DATA);
1832 record_alignment (now_seg, align);
1834 sprintf (sym_name, "$$lit_\002%x", pool->id);
1836 symbol_locate (pool->symbol, sym_name, now_seg,
1837 (valueT) frag_now_fix (), frag_now);
1838 symbol_table_insert (pool->symbol);
1840 for (entry = 0; entry < pool->next_free_entry; entry++)
1842 expressionS * exp = & pool->literals[entry].exp;
1844 if (exp->X_op == O_big)
1846 /* PR 16688: Restore the global bignum value. */
1847 gas_assert (pool->literals[entry].bignum != NULL);
1848 memcpy (generic_bignum, pool->literals[entry].bignum,
1849 CHARS_PER_LITTLENUM * exp->X_add_number);
1852 /* First output the expression in the instruction to the pool. */
1853 emit_expr (exp, size); /* .word|.xword */
1855 if (exp->X_op == O_big)
1857 free (pool->literals[entry].bignum);
1858 pool->literals[entry].bignum = NULL;
1862 /* Mark the pool as empty. */
1863 pool->next_free_entry = 0;
1864 pool->symbol = NULL;
1869 /* Forward declarations for functions below, in the MD interface
1871 static fixS *fix_new_aarch64 (fragS *, int, short, expressionS *, int, int);
1872 static struct reloc_table_entry * find_reloc_table_entry (char **);
1874 /* Directives: Data. */
1875 /* N.B. the support for relocation suffix in this directive needs to be
1876 implemented properly. */
1879 s_aarch64_elf_cons (int nbytes)
1883 #ifdef md_flush_pending_output
1884 md_flush_pending_output ();
1887 if (is_it_end_of_statement ())
1889 demand_empty_rest_of_line ();
1893 #ifdef md_cons_align
1894 md_cons_align (nbytes);
1897 mapping_state (MAP_DATA);
1900 struct reloc_table_entry *reloc;
1904 if (exp.X_op != O_symbol)
1905 emit_expr (&exp, (unsigned int) nbytes);
1908 skip_past_char (&input_line_pointer, '#');
1909 if (skip_past_char (&input_line_pointer, ':'))
1911 reloc = find_reloc_table_entry (&input_line_pointer);
1913 as_bad (_("unrecognized relocation suffix"));
1915 as_bad (_("unimplemented relocation suffix"));
1916 ignore_rest_of_line ();
1920 emit_expr (&exp, (unsigned int) nbytes);
1923 while (*input_line_pointer++ == ',');
1925 /* Put terminator back into stream. */
1926 input_line_pointer--;
1927 demand_empty_rest_of_line ();
1930 #endif /* OBJ_ELF */
1932 /* Output a 32-bit word, but mark as an instruction. */
1935 s_aarch64_inst (int ignored ATTRIBUTE_UNUSED)
1939 #ifdef md_flush_pending_output
1940 md_flush_pending_output ();
1943 if (is_it_end_of_statement ())
1945 demand_empty_rest_of_line ();
1949 /* Sections are assumed to start aligned. In executable section, there is no
1950 MAP_DATA symbol pending. So we only align the address during
1951 MAP_DATA --> MAP_INSN transition.
1952 For other sections, this is not guaranteed. */
1953 enum mstate mapstate = seg_info (now_seg)->tc_segment_info_data.mapstate;
1954 if (!need_pass_2 && subseg_text_p (now_seg) && mapstate == MAP_DATA)
1955 frag_align_code (2, 0);
1958 mapping_state (MAP_INSN);
1964 if (exp.X_op != O_constant)
1966 as_bad (_("constant expression required"));
1967 ignore_rest_of_line ();
1971 if (target_big_endian)
1973 unsigned int val = exp.X_add_number;
1974 exp.X_add_number = SWAP_32 (val);
1976 emit_expr (&exp, 4);
1978 while (*input_line_pointer++ == ',');
1980 /* Put terminator back into stream. */
1981 input_line_pointer--;
1982 demand_empty_rest_of_line ();
1986 /* Emit BFD_RELOC_AARCH64_TLSDESC_ADD on the next ADD instruction. */
1989 s_tlsdescadd (int ignored ATTRIBUTE_UNUSED)
1995 fix_new_aarch64 (frag_now, frag_more (0) - frag_now->fr_literal, 4, &exp, 0,
1996 BFD_RELOC_AARCH64_TLSDESC_ADD);
1998 demand_empty_rest_of_line ();
2001 /* Emit BFD_RELOC_AARCH64_TLSDESC_CALL on the next BLR instruction. */
2004 s_tlsdesccall (int ignored ATTRIBUTE_UNUSED)
2008 /* Since we're just labelling the code, there's no need to define a
2011 /* Make sure there is enough room in this frag for the following
2012 blr. This trick only works if the blr follows immediately after
2013 the .tlsdesc directive. */
2015 fix_new_aarch64 (frag_now, frag_more (0) - frag_now->fr_literal, 4, &exp, 0,
2016 BFD_RELOC_AARCH64_TLSDESC_CALL);
2018 demand_empty_rest_of_line ();
2021 /* Emit BFD_RELOC_AARCH64_TLSDESC_LDR on the next LDR instruction. */
2024 s_tlsdescldr (int ignored ATTRIBUTE_UNUSED)
2030 fix_new_aarch64 (frag_now, frag_more (0) - frag_now->fr_literal, 4, &exp, 0,
2031 BFD_RELOC_AARCH64_TLSDESC_LDR);
2033 demand_empty_rest_of_line ();
2035 #endif /* OBJ_ELF */
2037 static void s_aarch64_arch (int);
2038 static void s_aarch64_cpu (int);
2039 static void s_aarch64_arch_extension (int);
2041 /* This table describes all the machine specific pseudo-ops the assembler
2042 has to support. The fields are:
2043 pseudo-op name without dot
2044 function to call to execute this pseudo-op
2045 Integer arg to pass to the function. */
2047 const pseudo_typeS md_pseudo_table[] = {
2048 /* Never called because '.req' does not start a line. */
2050 {"unreq", s_unreq, 0},
2052 {"even", s_even, 0},
2053 {"ltorg", s_ltorg, 0},
2054 {"pool", s_ltorg, 0},
2055 {"cpu", s_aarch64_cpu, 0},
2056 {"arch", s_aarch64_arch, 0},
2057 {"arch_extension", s_aarch64_arch_extension, 0},
2058 {"inst", s_aarch64_inst, 0},
2060 {"tlsdescadd", s_tlsdescadd, 0},
2061 {"tlsdesccall", s_tlsdesccall, 0},
2062 {"tlsdescldr", s_tlsdescldr, 0},
2063 {"word", s_aarch64_elf_cons, 4},
2064 {"long", s_aarch64_elf_cons, 4},
2065 {"xword", s_aarch64_elf_cons, 8},
2066 {"dword", s_aarch64_elf_cons, 8},
2072 /* Check whether STR points to a register name followed by a comma or the
2073 end of line; REG_TYPE indicates which register types are checked
2074 against. Return TRUE if STR is such a register name; otherwise return
2075 FALSE. The function does not intend to produce any diagnostics, but since
2076 the register parser aarch64_reg_parse, which is called by this function,
2077 does produce diagnostics, we call clear_error to clear any diagnostics
2078 that may be generated by aarch64_reg_parse.
2079 Also, the function returns FALSE directly if there is any user error
2080 present at the function entry. This prevents the existing diagnostics
2081 state from being spoiled.
2082 The function currently serves parse_constant_immediate and
2083 parse_big_immediate only. */
2085 reg_name_p (char *str, aarch64_reg_type reg_type)
2089 /* Prevent the diagnostics state from being spoiled. */
2093 reg = aarch64_reg_parse (&str, reg_type, NULL, NULL);
2095 /* Clear the parsing error that may be set by the reg parser. */
2098 if (reg == PARSE_FAIL)
2101 skip_whitespace (str);
2102 if (*str == ',' || is_end_of_line[(unsigned int) *str])
2108 /* Parser functions used exclusively in instruction operands. */
2110 /* Parse an immediate expression which may not be constant.
2112 To prevent the expression parser from pushing a register name
2113 into the symbol table as an undefined symbol, firstly a check is
2114 done to find out whether STR is a register of type REG_TYPE followed
2115 by a comma or the end of line. Return FALSE if STR is such a string. */
2118 parse_immediate_expression (char **str, expressionS *exp,
2119 aarch64_reg_type reg_type)
2121 if (reg_name_p (*str, reg_type))
2123 set_recoverable_error (_("immediate operand required"));
2127 my_get_expression (exp, str, GE_OPT_PREFIX, 1);
2129 if (exp->X_op == O_absent)
2131 set_fatal_syntax_error (_("missing immediate expression"));
2138 /* Constant immediate-value read function for use in insn parsing.
2139 STR points to the beginning of the immediate (with the optional
2140 leading #); *VAL receives the value. REG_TYPE says which register
2141 names should be treated as registers rather than as symbolic immediates.
2143 Return TRUE on success; otherwise return FALSE. */
2146 parse_constant_immediate (char **str, int64_t *val, aarch64_reg_type reg_type)
2150 if (! parse_immediate_expression (str, &exp, reg_type))
2153 if (exp.X_op != O_constant)
2155 set_syntax_error (_("constant expression required"));
2159 *val = exp.X_add_number;
2164 encode_imm_float_bits (uint32_t imm)
2166 return ((imm >> 19) & 0x7f) /* b[25:19] -> b[6:0] */
2167 | ((imm >> (31 - 7)) & 0x80); /* b[31] -> b[7] */
2170 /* Return TRUE if the single-precision floating-point value encoded in IMM
2171 can be expressed in the AArch64 8-bit signed floating-point format with
2172 3-bit exponent and normalized 4 bits of precision; in other words, the
2173 floating-point value must be expressable as
2174 (+/-) n / 16 * power (2, r)
2175 where n and r are integers such that 16 <= n <=31 and -3 <= r <= 4. */
2178 aarch64_imm_float_p (uint32_t imm)
2180 /* If a single-precision floating-point value has the following bit
2181 pattern, it can be expressed in the AArch64 8-bit floating-point
2184 3 32222222 2221111111111
2185 1 09876543 21098765432109876543210
2186 n Eeeeeexx xxxx0000000000000000000
2188 where n, e and each x are either 0 or 1 independently, with
2193 /* Prepare the pattern for 'Eeeeee'. */
2194 if (((imm >> 30) & 0x1) == 0)
2195 pattern = 0x3e000000;
2197 pattern = 0x40000000;
2199 return (imm & 0x7ffff) == 0 /* lower 19 bits are 0. */
2200 && ((imm & 0x7e000000) == pattern); /* bits 25 - 29 == ~ bit 30. */
2203 /* Return TRUE if the IEEE double value encoded in IMM can be expressed
2204 as an IEEE float without any loss of precision. Store the value in
2208 can_convert_double_to_float (uint64_t imm, uint32_t *fpword)
2210 /* If a double-precision floating-point value has the following bit
2211 pattern, it can be expressed in a float:
2213 6 66655555555 5544 44444444 33333333 33222222 22221111 111111
2214 3 21098765432 1098 76543210 98765432 10987654 32109876 54321098 76543210
2215 n E~~~eeeeeee ssss ssssssss ssssssss SSS00000 00000000 00000000 00000000
2217 -----------------------------> nEeeeeee esssssss ssssssss sssssSSS
2218 if Eeee_eeee != 1111_1111
2220 where n, e, s and S are either 0 or 1 independently and where ~ is the
2224 uint32_t high32 = imm >> 32;
2225 uint32_t low32 = imm;
2227 /* Lower 29 bits need to be 0s. */
2228 if ((imm & 0x1fffffff) != 0)
2231 /* Prepare the pattern for 'Eeeeeeeee'. */
2232 if (((high32 >> 30) & 0x1) == 0)
2233 pattern = 0x38000000;
2235 pattern = 0x40000000;
2238 if ((high32 & 0x78000000) != pattern)
2241 /* Check Eeee_eeee != 1111_1111. */
2242 if ((high32 & 0x7ff00000) == 0x47f00000)
2245 *fpword = ((high32 & 0xc0000000) /* 1 n bit and 1 E bit. */
2246 | ((high32 << 3) & 0x3ffffff8) /* 7 e and 20 s bits. */
2247 | (low32 >> 29)); /* 3 S bits. */
2251 /* Return true if we should treat OPERAND as a double-precision
2252 floating-point operand rather than a single-precision one. */
2254 double_precision_operand_p (const aarch64_opnd_info *operand)
2256 /* Check for unsuffixed SVE registers, which are allowed
2257 for LDR and STR but not in instructions that require an
2258 immediate. We get better error messages if we arbitrarily
2259 pick one size, parse the immediate normally, and then
2260 report the match failure in the normal way. */
2261 return (operand->qualifier == AARCH64_OPND_QLF_NIL
2262 || aarch64_get_qualifier_esize (operand->qualifier) == 8);
2265 /* Parse a floating-point immediate. Return TRUE on success and return the
2266 value in *IMMED in the format of IEEE754 single-precision encoding.
2267 *CCP points to the start of the string; DP_P is TRUE when the immediate
2268 is expected to be in double-precision (N.B. this only matters when
2269 hexadecimal representation is involved). REG_TYPE says which register
2270 names should be treated as registers rather than as symbolic immediates.
2272 This routine accepts any IEEE float; it is up to the callers to reject
2276 parse_aarch64_imm_float (char **ccp, int *immed, bfd_boolean dp_p,
2277 aarch64_reg_type reg_type)
2281 LITTLENUM_TYPE words[MAX_LITTLENUMS];
2283 unsigned fpword = 0;
2284 bfd_boolean hex_p = FALSE;
2286 skip_past_char (&str, '#');
2289 skip_whitespace (fpnum);
2291 if (strncmp (fpnum, "0x", 2) == 0)
2293 /* Support the hexadecimal representation of the IEEE754 encoding.
2294 Double-precision is expected when DP_P is TRUE, otherwise the
2295 representation should be in single-precision. */
2296 if (! parse_constant_immediate (&str, &val, reg_type))
2301 if (!can_convert_double_to_float (val, &fpword))
2304 else if ((uint64_t) val > 0xffffffff)
2311 else if (reg_name_p (str, reg_type))
2313 set_recoverable_error (_("immediate operand required"));
2321 if ((str = atof_ieee (str, 's', words)) == NULL)
2324 /* Our FP word must be 32 bits (single-precision FP). */
2325 for (i = 0; i < 32 / LITTLENUM_NUMBER_OF_BITS; i++)
2327 fpword <<= LITTLENUM_NUMBER_OF_BITS;
2337 set_fatal_syntax_error (_("invalid floating-point constant"));
2341 /* Less-generic immediate-value read function with the possibility of loading
2342 a big (64-bit) immediate, as required by AdvSIMD Modified immediate
2345 To prevent the expression parser from pushing a register name into the
2346 symbol table as an undefined symbol, a check is firstly done to find
2347 out whether STR is a register of type REG_TYPE followed by a comma or
2348 the end of line. Return FALSE if STR is such a register. */
2351 parse_big_immediate (char **str, int64_t *imm, aarch64_reg_type reg_type)
2355 if (reg_name_p (ptr, reg_type))
2357 set_syntax_error (_("immediate operand required"));
2361 my_get_expression (&inst.reloc.exp, &ptr, GE_OPT_PREFIX, 1);
2363 if (inst.reloc.exp.X_op == O_constant)
2364 *imm = inst.reloc.exp.X_add_number;
2371 /* Set operand IDX of the *INSTR that needs a GAS internal fixup.
2372 if NEED_LIBOPCODES is non-zero, the fixup will need
2373 assistance from the libopcodes. */
2376 aarch64_set_gas_internal_fixup (struct reloc *reloc,
2377 const aarch64_opnd_info *operand,
2378 int need_libopcodes_p)
2380 reloc->type = BFD_RELOC_AARCH64_GAS_INTERNAL_FIXUP;
2381 reloc->opnd = operand->type;
2382 if (need_libopcodes_p)
2383 reloc->need_libopcodes_p = 1;
2386 /* Return TRUE if the instruction needs to be fixed up later internally by
2387 the GAS; otherwise return FALSE. */
2389 static inline bfd_boolean
2390 aarch64_gas_internal_fixup_p (void)
2392 return inst.reloc.type == BFD_RELOC_AARCH64_GAS_INTERNAL_FIXUP;
2395 /* Assign the immediate value to the relevant field in *OPERAND if
2396 RELOC->EXP is a constant expression; otherwise, flag that *OPERAND
2397 needs an internal fixup in a later stage.
2398 ADDR_OFF_P determines whether it is the field ADDR.OFFSET.IMM or
2399 IMM.VALUE that may get assigned with the constant. */
2401 assign_imm_if_const_or_fixup_later (struct reloc *reloc,
2402 aarch64_opnd_info *operand,
2404 int need_libopcodes_p,
2407 if (reloc->exp.X_op == O_constant)
2410 operand->addr.offset.imm = reloc->exp.X_add_number;
2412 operand->imm.value = reloc->exp.X_add_number;
2413 reloc->type = BFD_RELOC_UNUSED;
2417 aarch64_set_gas_internal_fixup (reloc, operand, need_libopcodes_p);
2418 /* Tell libopcodes to ignore this operand or not. This is helpful
2419 when one of the operands needs to be fixed up later but we need
2420 libopcodes to check the other operands. */
2421 operand->skip = skip_p;
2425 /* Relocation modifiers. Each entry in the table contains the textual
2426 name for the relocation which may be placed before a symbol used as
2427 a load/store offset, or add immediate. It must be surrounded by a
2428 leading and trailing colon, for example:
2430 ldr x0, [x1, #:rello:varsym]
2431 add x0, x1, #:rello:varsym */
2433 struct reloc_table_entry
2437 bfd_reloc_code_real_type adr_type;
2438 bfd_reloc_code_real_type adrp_type;
2439 bfd_reloc_code_real_type movw_type;
2440 bfd_reloc_code_real_type add_type;
2441 bfd_reloc_code_real_type ldst_type;
2442 bfd_reloc_code_real_type ld_literal_type;
2445 static struct reloc_table_entry reloc_table[] = {
2446 /* Low 12 bits of absolute address: ADD/i and LDR/STR */
2451 BFD_RELOC_AARCH64_ADD_LO12,
2452 BFD_RELOC_AARCH64_LDST_LO12,
2455 /* Higher 21 bits of pc-relative page offset: ADRP */
2458 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
2464 /* Higher 21 bits of pc-relative page offset: ADRP, no check */
2467 BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL,
2473 /* Most significant bits 0-15 of unsigned address/value: MOVZ */
2477 BFD_RELOC_AARCH64_MOVW_G0,
2482 /* Most significant bits 0-15 of signed address/value: MOVN/Z */
2486 BFD_RELOC_AARCH64_MOVW_G0_S,
2491 /* Less significant bits 0-15 of address/value: MOVK, no check */
2495 BFD_RELOC_AARCH64_MOVW_G0_NC,
2500 /* Most significant bits 16-31 of unsigned address/value: MOVZ */
2504 BFD_RELOC_AARCH64_MOVW_G1,
2509 /* Most significant bits 16-31 of signed address/value: MOVN/Z */
2513 BFD_RELOC_AARCH64_MOVW_G1_S,
2518 /* Less significant bits 16-31 of address/value: MOVK, no check */
2522 BFD_RELOC_AARCH64_MOVW_G1_NC,
2527 /* Most significant bits 32-47 of unsigned address/value: MOVZ */
2531 BFD_RELOC_AARCH64_MOVW_G2,
2536 /* Most significant bits 32-47 of signed address/value: MOVN/Z */
2540 BFD_RELOC_AARCH64_MOVW_G2_S,
2545 /* Less significant bits 32-47 of address/value: MOVK, no check */
2549 BFD_RELOC_AARCH64_MOVW_G2_NC,
2554 /* Most significant bits 48-63 of signed/unsigned address/value: MOVZ */
2558 BFD_RELOC_AARCH64_MOVW_G3,
2563 /* Most significant bits 0-15 of signed/unsigned address/value: MOVZ */
2567 BFD_RELOC_AARCH64_MOVW_PREL_G0,
2572 /* Most significant bits 0-15 of signed/unsigned address/value: MOVK */
2576 BFD_RELOC_AARCH64_MOVW_PREL_G0_NC,
2581 /* Most significant bits 16-31 of signed/unsigned address/value: MOVZ */
2585 BFD_RELOC_AARCH64_MOVW_PREL_G1,
2590 /* Most significant bits 16-31 of signed/unsigned address/value: MOVK */
2594 BFD_RELOC_AARCH64_MOVW_PREL_G1_NC,
2599 /* Most significant bits 32-47 of signed/unsigned address/value: MOVZ */
2603 BFD_RELOC_AARCH64_MOVW_PREL_G2,
2608 /* Most significant bits 32-47 of signed/unsigned address/value: MOVK */
2612 BFD_RELOC_AARCH64_MOVW_PREL_G2_NC,
2617 /* Most significant bits 48-63 of signed/unsigned address/value: MOVZ */
2621 BFD_RELOC_AARCH64_MOVW_PREL_G3,
2626 /* Get to the page containing GOT entry for a symbol. */
2629 BFD_RELOC_AARCH64_ADR_GOT_PAGE,
2633 BFD_RELOC_AARCH64_GOT_LD_PREL19},
2635 /* 12 bit offset into the page containing GOT entry for that symbol. */
2641 BFD_RELOC_AARCH64_LD_GOT_LO12_NC,
2644 /* 0-15 bits of address/value: MOVk, no check. */
2648 BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC,
2653 /* Most significant bits 16-31 of address/value: MOVZ. */
2657 BFD_RELOC_AARCH64_MOVW_GOTOFF_G1,
2662 /* 15 bit offset into the page containing GOT entry for that symbol. */
2668 BFD_RELOC_AARCH64_LD64_GOTOFF_LO15,
2671 /* Get to the page containing GOT TLS entry for a symbol */
2672 {"gottprel_g0_nc", 0,
2675 BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC,
2680 /* Get to the page containing GOT TLS entry for a symbol */
2684 BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1,
2689 /* Get to the page containing GOT TLS entry for a symbol */
2691 BFD_RELOC_AARCH64_TLSGD_ADR_PREL21, /* adr_type */
2692 BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21,
2698 /* 12 bit offset into the page containing GOT TLS entry for a symbol */
2703 BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC,
2707 /* Lower 16 bits address/value: MOVk. */
2711 BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC,
2716 /* Most significant bits 16-31 of address/value: MOVZ. */
2720 BFD_RELOC_AARCH64_TLSGD_MOVW_G1,
2725 /* Get to the page containing GOT TLS entry for a symbol */
2727 BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21, /* adr_type */
2728 BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21,
2732 BFD_RELOC_AARCH64_TLSDESC_LD_PREL19},
2734 /* 12 bit offset into the page containing GOT TLS entry for a symbol */
2739 BFD_RELOC_AARCH64_TLSDESC_ADD_LO12,
2740 BFD_RELOC_AARCH64_TLSDESC_LD_LO12_NC,
2743 /* Get to the page containing GOT TLS entry for a symbol.
2744 The same as GD, we allocate two consecutive GOT slots
2745 for module index and module offset, the only difference
2746 with GD is the module offset should be initialized to
2747 zero without any outstanding runtime relocation. */
2749 BFD_RELOC_AARCH64_TLSLD_ADR_PREL21, /* adr_type */
2750 BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21,
2756 /* 12 bit offset into the page containing GOT TLS entry for a symbol */
2757 {"tlsldm_lo12_nc", 0,
2761 BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC,
2765 /* 12 bit offset into the module TLS base address. */
2770 BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12,
2771 BFD_RELOC_AARCH64_TLSLD_LDST_DTPREL_LO12,
2774 /* Same as dtprel_lo12, no overflow check. */
2775 {"dtprel_lo12_nc", 0,
2779 BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC,
2780 BFD_RELOC_AARCH64_TLSLD_LDST_DTPREL_LO12_NC,
2783 /* bits[23:12] of offset to the module TLS base address. */
2788 BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12,
2792 /* bits[15:0] of offset to the module TLS base address. */
2796 BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0,
2801 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
2805 BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC,
2810 /* bits[31:16] of offset to the module TLS base address. */
2814 BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1,
2819 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
2823 BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC,
2828 /* bits[47:32] of offset to the module TLS base address. */
2832 BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2,
2837 /* Lower 16 bit offset into GOT entry for a symbol */
2838 {"tlsdesc_off_g0_nc", 0,
2841 BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC,
2846 /* Higher 16 bit offset into GOT entry for a symbol */
2847 {"tlsdesc_off_g1", 0,
2850 BFD_RELOC_AARCH64_TLSDESC_OFF_G1,
2855 /* Get to the page containing GOT TLS entry for a symbol */
2858 BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21,
2862 BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19},
2864 /* 12 bit offset into the page containing GOT TLS entry for a symbol */
2865 {"gottprel_lo12", 0,
2870 BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_LO12_NC,
2873 /* Get tp offset for a symbol. */
2878 BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12,
2882 /* Get tp offset for a symbol. */
2887 BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12,
2888 BFD_RELOC_AARCH64_TLSLE_LDST_TPREL_LO12,
2891 /* Get tp offset for a symbol. */
2896 BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12,
2900 /* Get tp offset for a symbol. */
2901 {"tprel_lo12_nc", 0,
2905 BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC,
2906 BFD_RELOC_AARCH64_TLSLE_LDST_TPREL_LO12_NC,
2909 /* Most significant bits 32-47 of address/value: MOVZ. */
2913 BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2,
2918 /* Most significant bits 16-31 of address/value: MOVZ. */
2922 BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1,
2927 /* Most significant bits 16-31 of address/value: MOVZ, no check. */
2931 BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC,
2936 /* Most significant bits 0-15 of address/value: MOVZ. */
2940 BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0,
2945 /* Most significant bits 0-15 of address/value: MOVZ, no check. */
2949 BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC,
2954 /* 15bit offset from got entry to base address of GOT table. */
2960 BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15,
2963 /* 14bit offset from got entry to base address of GOT table. */
2969 BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14,
2973 /* Given the address of a pointer pointing to the textual name of a
2974 relocation as may appear in assembler source, attempt to find its
2975 details in reloc_table. The pointer will be updated to the character
2976 after the trailing colon. On failure, NULL will be returned;
2977 otherwise return the reloc_table_entry. */
2979 static struct reloc_table_entry *
2980 find_reloc_table_entry (char **str)
2983 for (i = 0; i < ARRAY_SIZE (reloc_table); i++)
2985 int length = strlen (reloc_table[i].name);
2987 if (strncasecmp (reloc_table[i].name, *str, length) == 0
2988 && (*str)[length] == ':')
2990 *str += (length + 1);
2991 return &reloc_table[i];
2998 /* Mode argument to parse_shift and parser_shifter_operand. */
2999 enum parse_shift_mode
3001 SHIFTED_NONE, /* no shifter allowed */
3002 SHIFTED_ARITH_IMM, /* "rn{,lsl|lsr|asl|asr|uxt|sxt #n}" or
3004 SHIFTED_LOGIC_IMM, /* "rn{,lsl|lsr|asl|asr|ror #n}" or
3006 SHIFTED_LSL, /* bare "lsl #n" */
3007 SHIFTED_MUL, /* bare "mul #n" */
3008 SHIFTED_LSL_MSL, /* "lsl|msl #n" */
3009 SHIFTED_MUL_VL, /* "mul vl" */
3010 SHIFTED_REG_OFFSET /* [su]xtw|sxtx {#n} or lsl #n */
3013 /* Parse a <shift> operator on an AArch64 data processing instruction.
3014 Return TRUE on success; otherwise return FALSE. */
3016 parse_shift (char **str, aarch64_opnd_info *operand, enum parse_shift_mode mode)
3018 const struct aarch64_name_value_pair *shift_op;
3019 enum aarch64_modifier_kind kind;
3025 for (p = *str; ISALPHA (*p); p++)
3030 set_syntax_error (_("shift expression expected"));
3034 shift_op = hash_find_n (aarch64_shift_hsh, *str, p - *str);
3036 if (shift_op == NULL)
3038 set_syntax_error (_("shift operator expected"));
3042 kind = aarch64_get_operand_modifier (shift_op);
3044 if (kind == AARCH64_MOD_MSL && mode != SHIFTED_LSL_MSL)
3046 set_syntax_error (_("invalid use of 'MSL'"));
3050 if (kind == AARCH64_MOD_MUL
3051 && mode != SHIFTED_MUL
3052 && mode != SHIFTED_MUL_VL)
3054 set_syntax_error (_("invalid use of 'MUL'"));
3060 case SHIFTED_LOGIC_IMM:
3061 if (aarch64_extend_operator_p (kind))
3063 set_syntax_error (_("extending shift is not permitted"));
3068 case SHIFTED_ARITH_IMM:
3069 if (kind == AARCH64_MOD_ROR)
3071 set_syntax_error (_("'ROR' shift is not permitted"));
3077 if (kind != AARCH64_MOD_LSL)
3079 set_syntax_error (_("only 'LSL' shift is permitted"));
3085 if (kind != AARCH64_MOD_MUL)
3087 set_syntax_error (_("only 'MUL' is permitted"));
3092 case SHIFTED_MUL_VL:
3093 /* "MUL VL" consists of two separate tokens. Require the first
3094 token to be "MUL" and look for a following "VL". */
3095 if (kind == AARCH64_MOD_MUL)
3097 skip_whitespace (p);
3098 if (strncasecmp (p, "vl", 2) == 0 && !ISALPHA (p[2]))
3101 kind = AARCH64_MOD_MUL_VL;
3105 set_syntax_error (_("only 'MUL VL' is permitted"));
3108 case SHIFTED_REG_OFFSET:
3109 if (kind != AARCH64_MOD_UXTW && kind != AARCH64_MOD_LSL
3110 && kind != AARCH64_MOD_SXTW && kind != AARCH64_MOD_SXTX)
3112 set_fatal_syntax_error
3113 (_("invalid shift for the register offset addressing mode"));
3118 case SHIFTED_LSL_MSL:
3119 if (kind != AARCH64_MOD_LSL && kind != AARCH64_MOD_MSL)
3121 set_syntax_error (_("invalid shift operator"));
3130 /* Whitespace can appear here if the next thing is a bare digit. */
3131 skip_whitespace (p);
3133 /* Parse shift amount. */
3135 if ((mode == SHIFTED_REG_OFFSET && *p == ']') || kind == AARCH64_MOD_MUL_VL)
3136 exp.X_op = O_absent;
3139 if (is_immediate_prefix (*p))
3144 my_get_expression (&exp, &p, GE_NO_PREFIX, 0);
3146 if (kind == AARCH64_MOD_MUL_VL)
3147 /* For consistency, give MUL VL the same shift amount as an implicit
3149 operand->shifter.amount = 1;
3150 else if (exp.X_op == O_absent)
3152 if (!aarch64_extend_operator_p (kind) || exp_has_prefix)
3154 set_syntax_error (_("missing shift amount"));
3157 operand->shifter.amount = 0;
3159 else if (exp.X_op != O_constant)
3161 set_syntax_error (_("constant shift amount required"));
3164 /* For parsing purposes, MUL #n has no inherent range. The range
3165 depends on the operand and will be checked by operand-specific
3167 else if (kind != AARCH64_MOD_MUL
3168 && (exp.X_add_number < 0 || exp.X_add_number > 63))
3170 set_fatal_syntax_error (_("shift amount out of range 0 to 63"));
3175 operand->shifter.amount = exp.X_add_number;
3176 operand->shifter.amount_present = 1;
3179 operand->shifter.operator_present = 1;
3180 operand->shifter.kind = kind;
3186 /* Parse a <shifter_operand> for a data processing instruction:
3189 #<immediate>, LSL #imm
3191 Validation of immediate operands is deferred to md_apply_fix.
3193 Return TRUE on success; otherwise return FALSE. */
3196 parse_shifter_operand_imm (char **str, aarch64_opnd_info *operand,
3197 enum parse_shift_mode mode)
3201 if (mode != SHIFTED_ARITH_IMM && mode != SHIFTED_LOGIC_IMM)
3206 /* Accept an immediate expression. */
3207 if (! my_get_expression (&inst.reloc.exp, &p, GE_OPT_PREFIX, 1))
3210 /* Accept optional LSL for arithmetic immediate values. */
3211 if (mode == SHIFTED_ARITH_IMM && skip_past_comma (&p))
3212 if (! parse_shift (&p, operand, SHIFTED_LSL))
3215 /* Not accept any shifter for logical immediate values. */
3216 if (mode == SHIFTED_LOGIC_IMM && skip_past_comma (&p)
3217 && parse_shift (&p, operand, mode))
3219 set_syntax_error (_("unexpected shift operator"));
3227 /* Parse a <shifter_operand> for a data processing instruction:
3232 #<immediate>, LSL #imm
3234 where <shift> is handled by parse_shift above, and the last two
3235 cases are handled by the function above.
3237 Validation of immediate operands is deferred to md_apply_fix.
3239 Return TRUE on success; otherwise return FALSE. */
3242 parse_shifter_operand (char **str, aarch64_opnd_info *operand,
3243 enum parse_shift_mode mode)
3245 const reg_entry *reg;
3246 aarch64_opnd_qualifier_t qualifier;
3247 enum aarch64_operand_class opd_class
3248 = aarch64_get_operand_class (operand->type);
3250 reg = aarch64_reg_parse_32_64 (str, &qualifier);
3253 if (opd_class == AARCH64_OPND_CLASS_IMMEDIATE)
3255 set_syntax_error (_("unexpected register in the immediate operand"));
3259 if (!aarch64_check_reg_type (reg, REG_TYPE_R_Z))
3261 set_syntax_error (_(get_reg_expected_msg (REG_TYPE_R_Z)));
3265 operand->reg.regno = reg->number;
3266 operand->qualifier = qualifier;
3268 /* Accept optional shift operation on register. */
3269 if (! skip_past_comma (str))
3272 if (! parse_shift (str, operand, mode))
3277 else if (opd_class == AARCH64_OPND_CLASS_MODIFIED_REG)
3280 (_("integer register expected in the extended/shifted operand "
3285 /* We have a shifted immediate variable. */
3286 return parse_shifter_operand_imm (str, operand, mode);
3289 /* Return TRUE on success; return FALSE otherwise. */
3292 parse_shifter_operand_reloc (char **str, aarch64_opnd_info *operand,
3293 enum parse_shift_mode mode)
3297 /* Determine if we have the sequence of characters #: or just :
3298 coming next. If we do, then we check for a :rello: relocation
3299 modifier. If we don't, punt the whole lot to
3300 parse_shifter_operand. */
3302 if ((p[0] == '#' && p[1] == ':') || p[0] == ':')
3304 struct reloc_table_entry *entry;
3312 /* Try to parse a relocation. Anything else is an error. */
3313 if (!(entry = find_reloc_table_entry (str)))
3315 set_syntax_error (_("unknown relocation modifier"));
3319 if (entry->add_type == 0)
3322 (_("this relocation modifier is not allowed on this instruction"));
3326 /* Save str before we decompose it. */
3329 /* Next, we parse the expression. */
3330 if (! my_get_expression (&inst.reloc.exp, str, GE_NO_PREFIX, 1))
3333 /* Record the relocation type (use the ADD variant here). */
3334 inst.reloc.type = entry->add_type;
3335 inst.reloc.pc_rel = entry->pc_rel;
3337 /* If str is empty, we've reached the end, stop here. */
3341 /* Otherwise, we have a shifted reloc modifier, so rewind to
3342 recover the variable name and continue parsing for the shifter. */
3344 return parse_shifter_operand_imm (str, operand, mode);
3347 return parse_shifter_operand (str, operand, mode);
3350 /* Parse all forms of an address expression. Information is written
3351 to *OPERAND and/or inst.reloc.
3353 The A64 instruction set has the following addressing modes:
3356 [base] // in SIMD ld/st structure
3357 [base{,#0}] // in ld/st exclusive
3359 [base,Xm{,LSL #imm}]
3360 [base,Xm,SXTX {#imm}]
3361 [base,Wm,(S|U)XTW {#imm}]
3366 [base],Xm // in SIMD ld/st structure
3367 PC-relative (literal)
3371 [base,Zm.D{,LSL #imm}]
3372 [base,Zm.S,(S|U)XTW {#imm}]
3373 [base,Zm.D,(S|U)XTW {#imm}] // ignores top 32 bits of Zm.D elements
3376 [Zn.S,Zm.S{,LSL #imm}] // in ADR
3377 [Zn.D,Zm.D{,LSL #imm}] // in ADR
3378 [Zn.D,Zm.D,(S|U)XTW {#imm}] // in ADR
3380 (As a convenience, the notation "=immediate" is permitted in conjunction
3381 with the pc-relative literal load instructions to automatically place an
3382 immediate value or symbolic address in a nearby literal pool and generate
3383 a hidden label which references it.)
3385 Upon a successful parsing, the address structure in *OPERAND will be
3386 filled in the following way:
3388 .base_regno = <base>
3389 .offset.is_reg // 1 if the offset is a register
3391 .offset.regno = <Rm>
3393 For different addressing modes defined in the A64 ISA:
3396 .pcrel=0; .preind=1; .postind=0; .writeback=0
3398 .pcrel=0; .preind=1; .postind=0; .writeback=1
3400 .pcrel=0; .preind=0; .postind=1; .writeback=1
3401 PC-relative (literal)
3402 .pcrel=1; .preind=1; .postind=0; .writeback=0
3404 The shift/extension information, if any, will be stored in .shifter.
3405 The base and offset qualifiers will be stored in *BASE_QUALIFIER and
3406 *OFFSET_QUALIFIER respectively, with NIL being used if there's no
3407 corresponding register.
3409 BASE_TYPE says which types of base register should be accepted and
3410 OFFSET_TYPE says the same for offset registers. IMM_SHIFT_MODE
3411 is the type of shifter that is allowed for immediate offsets,
3412 or SHIFTED_NONE if none.
3414 In all other respects, it is the caller's responsibility to check
3415 for addressing modes not supported by the instruction, and to set
3419 parse_address_main (char **str, aarch64_opnd_info *operand,
3420 aarch64_opnd_qualifier_t *base_qualifier,
3421 aarch64_opnd_qualifier_t *offset_qualifier,
3422 aarch64_reg_type base_type, aarch64_reg_type offset_type,
3423 enum parse_shift_mode imm_shift_mode)
3426 const reg_entry *reg;
3427 expressionS *exp = &inst.reloc.exp;
3429 *base_qualifier = AARCH64_OPND_QLF_NIL;
3430 *offset_qualifier = AARCH64_OPND_QLF_NIL;
3431 if (! skip_past_char (&p, '['))
3433 /* =immediate or label. */
3434 operand->addr.pcrel = 1;
3435 operand->addr.preind = 1;
3437 /* #:<reloc_op>:<symbol> */
3438 skip_past_char (&p, '#');
3439 if (skip_past_char (&p, ':'))
3441 bfd_reloc_code_real_type ty;
3442 struct reloc_table_entry *entry;
3444 /* Try to parse a relocation modifier. Anything else is
3446 entry = find_reloc_table_entry (&p);
3449 set_syntax_error (_("unknown relocation modifier"));
3453 switch (operand->type)
3455 case AARCH64_OPND_ADDR_PCREL21:
3457 ty = entry->adr_type;
3461 ty = entry->ld_literal_type;
3468 (_("this relocation modifier is not allowed on this "
3474 if (! my_get_expression (exp, &p, GE_NO_PREFIX, 1))
3476 set_syntax_error (_("invalid relocation expression"));
3480 /* #:<reloc_op>:<expr> */
3481 /* Record the relocation type. */
3482 inst.reloc.type = ty;
3483 inst.reloc.pc_rel = entry->pc_rel;
3488 if (skip_past_char (&p, '='))
3489 /* =immediate; need to generate the literal in the literal pool. */
3490 inst.gen_lit_pool = 1;
3492 if (!my_get_expression (exp, &p, GE_NO_PREFIX, 1))
3494 set_syntax_error (_("invalid address"));
3505 reg = aarch64_addr_reg_parse (&p, base_type, base_qualifier);
3506 if (!reg || !aarch64_check_reg_type (reg, base_type))
3508 set_syntax_error (_(get_reg_expected_msg (base_type)));
3511 operand->addr.base_regno = reg->number;
3514 if (skip_past_comma (&p))
3517 operand->addr.preind = 1;
3519 reg = aarch64_addr_reg_parse (&p, offset_type, offset_qualifier);
3522 if (!aarch64_check_reg_type (reg, offset_type))
3524 set_syntax_error (_(get_reg_expected_msg (offset_type)));
3529 operand->addr.offset.regno = reg->number;
3530 operand->addr.offset.is_reg = 1;
3531 /* Shifted index. */
3532 if (skip_past_comma (&p))
3535 if (! parse_shift (&p, operand, SHIFTED_REG_OFFSET))
3536 /* Use the diagnostics set in parse_shift, so not set new
3537 error message here. */
3541 [base,Xm{,LSL #imm}]
3542 [base,Xm,SXTX {#imm}]
3543 [base,Wm,(S|U)XTW {#imm}] */
3544 if (operand->shifter.kind == AARCH64_MOD_NONE
3545 || operand->shifter.kind == AARCH64_MOD_LSL
3546 || operand->shifter.kind == AARCH64_MOD_SXTX)
3548 if (*offset_qualifier == AARCH64_OPND_QLF_W)
3550 set_syntax_error (_("invalid use of 32-bit register offset"));
3553 if (aarch64_get_qualifier_esize (*base_qualifier)
3554 != aarch64_get_qualifier_esize (*offset_qualifier))
3556 set_syntax_error (_("offset has different size from base"));
3560 else if (*offset_qualifier == AARCH64_OPND_QLF_X)
3562 set_syntax_error (_("invalid use of 64-bit register offset"));
3568 /* [Xn,#:<reloc_op>:<symbol> */
3569 skip_past_char (&p, '#');
3570 if (skip_past_char (&p, ':'))
3572 struct reloc_table_entry *entry;
3574 /* Try to parse a relocation modifier. Anything else is
3576 if (!(entry = find_reloc_table_entry (&p)))
3578 set_syntax_error (_("unknown relocation modifier"));
3582 if (entry->ldst_type == 0)
3585 (_("this relocation modifier is not allowed on this "
3590 /* [Xn,#:<reloc_op>: */
3591 /* We now have the group relocation table entry corresponding to
3592 the name in the assembler source. Next, we parse the
3594 if (! my_get_expression (exp, &p, GE_NO_PREFIX, 1))
3596 set_syntax_error (_("invalid relocation expression"));
3600 /* [Xn,#:<reloc_op>:<expr> */
3601 /* Record the load/store relocation type. */
3602 inst.reloc.type = entry->ldst_type;
3603 inst.reloc.pc_rel = entry->pc_rel;
3607 if (! my_get_expression (exp, &p, GE_OPT_PREFIX, 1))
3609 set_syntax_error (_("invalid expression in the address"));
3613 if (imm_shift_mode != SHIFTED_NONE && skip_past_comma (&p))
3614 /* [Xn,<expr>,<shifter> */
3615 if (! parse_shift (&p, operand, imm_shift_mode))
3621 if (! skip_past_char (&p, ']'))
3623 set_syntax_error (_("']' expected"));
3627 if (skip_past_char (&p, '!'))
3629 if (operand->addr.preind && operand->addr.offset.is_reg)
3631 set_syntax_error (_("register offset not allowed in pre-indexed "
3632 "addressing mode"));
3636 operand->addr.writeback = 1;
3638 else if (skip_past_comma (&p))
3641 operand->addr.postind = 1;
3642 operand->addr.writeback = 1;
3644 if (operand->addr.preind)
3646 set_syntax_error (_("cannot combine pre- and post-indexing"));
3650 reg = aarch64_reg_parse_32_64 (&p, offset_qualifier);
3654 if (!aarch64_check_reg_type (reg, REG_TYPE_R_64))
3656 set_syntax_error (_(get_reg_expected_msg (REG_TYPE_R_64)));
3660 operand->addr.offset.regno = reg->number;
3661 operand->addr.offset.is_reg = 1;
3663 else if (! my_get_expression (exp, &p, GE_OPT_PREFIX, 1))
3666 set_syntax_error (_("invalid expression in the address"));
3671 /* If at this point neither .preind nor .postind is set, we have a
3672 bare [Rn]{!}; reject [Rn]! but accept [Rn] as a shorthand for [Rn,#0]. */
3673 if (operand->addr.preind == 0 && operand->addr.postind == 0)
3675 if (operand->addr.writeback)
3678 set_syntax_error (_("missing offset in the pre-indexed address"));
3682 operand->addr.preind = 1;
3683 inst.reloc.exp.X_op = O_constant;
3684 inst.reloc.exp.X_add_number = 0;
3691 /* Parse a base AArch64 address (as opposed to an SVE one). Return TRUE
3694 parse_address (char **str, aarch64_opnd_info *operand)
3696 aarch64_opnd_qualifier_t base_qualifier, offset_qualifier;
3697 return parse_address_main (str, operand, &base_qualifier, &offset_qualifier,
3698 REG_TYPE_R64_SP, REG_TYPE_R_Z, SHIFTED_NONE);
3701 /* Parse an address in which SVE vector registers and MUL VL are allowed.
3702 The arguments have the same meaning as for parse_address_main.
3703 Return TRUE on success. */
3705 parse_sve_address (char **str, aarch64_opnd_info *operand,
3706 aarch64_opnd_qualifier_t *base_qualifier,
3707 aarch64_opnd_qualifier_t *offset_qualifier)
3709 return parse_address_main (str, operand, base_qualifier, offset_qualifier,
3710 REG_TYPE_SVE_BASE, REG_TYPE_SVE_OFFSET,
3714 /* Parse an operand for a MOVZ, MOVN or MOVK instruction.
3715 Return TRUE on success; otherwise return FALSE. */
3717 parse_half (char **str, int *internal_fixup_p)
3721 skip_past_char (&p, '#');
3723 gas_assert (internal_fixup_p);
3724 *internal_fixup_p = 0;
3728 struct reloc_table_entry *entry;
3730 /* Try to parse a relocation. Anything else is an error. */
3732 if (!(entry = find_reloc_table_entry (&p)))
3734 set_syntax_error (_("unknown relocation modifier"));
3738 if (entry->movw_type == 0)
3741 (_("this relocation modifier is not allowed on this instruction"));
3745 inst.reloc.type = entry->movw_type;
3748 *internal_fixup_p = 1;
3750 if (! my_get_expression (&inst.reloc.exp, &p, GE_NO_PREFIX, 1))
3757 /* Parse an operand for an ADRP instruction:
3759 Return TRUE on success; otherwise return FALSE. */
3762 parse_adrp (char **str)
3769 struct reloc_table_entry *entry;
3771 /* Try to parse a relocation. Anything else is an error. */
3773 if (!(entry = find_reloc_table_entry (&p)))
3775 set_syntax_error (_("unknown relocation modifier"));
3779 if (entry->adrp_type == 0)
3782 (_("this relocation modifier is not allowed on this instruction"));
3786 inst.reloc.type = entry->adrp_type;
3789 inst.reloc.type = BFD_RELOC_AARCH64_ADR_HI21_PCREL;
3791 inst.reloc.pc_rel = 1;
3793 if (! my_get_expression (&inst.reloc.exp, &p, GE_NO_PREFIX, 1))
3800 /* Miscellaneous. */
3802 /* Parse a symbolic operand such as "pow2" at *STR. ARRAY is an array
3803 of SIZE tokens in which index I gives the token for field value I,
3804 or is null if field value I is invalid. REG_TYPE says which register
3805 names should be treated as registers rather than as symbolic immediates.
3807 Return true on success, moving *STR past the operand and storing the
3808 field value in *VAL. */
3811 parse_enum_string (char **str, int64_t *val, const char *const *array,
3812 size_t size, aarch64_reg_type reg_type)
3818 /* Match C-like tokens. */
3820 while (ISALNUM (*q))
3823 for (i = 0; i < size; ++i)
3825 && strncasecmp (array[i], p, q - p) == 0
3826 && array[i][q - p] == 0)
3833 if (!parse_immediate_expression (&p, &exp, reg_type))
3836 if (exp.X_op == O_constant
3837 && (uint64_t) exp.X_add_number < size)
3839 *val = exp.X_add_number;
3844 /* Use the default error for this operand. */
3848 /* Parse an option for a preload instruction. Returns the encoding for the
3849 option, or PARSE_FAIL. */
3852 parse_pldop (char **str)
3855 const struct aarch64_name_value_pair *o;
3858 while (ISALNUM (*q))
3861 o = hash_find_n (aarch64_pldop_hsh, p, q - p);
3869 /* Parse an option for a barrier instruction. Returns the encoding for the
3870 option, or PARSE_FAIL. */
3873 parse_barrier (char **str)
3876 const asm_barrier_opt *o;
3879 while (ISALPHA (*q))
3882 o = hash_find_n (aarch64_barrier_opt_hsh, p, q - p);
3890 /* Parse an operand for a PSB barrier. Set *HINT_OPT to the hint-option record
3891 return 0 if successful. Otherwise return PARSE_FAIL. */
3894 parse_barrier_psb (char **str,
3895 const struct aarch64_name_value_pair ** hint_opt)
3898 const struct aarch64_name_value_pair *o;
3901 while (ISALPHA (*q))
3904 o = hash_find_n (aarch64_hint_opt_hsh, p, q - p);
3907 set_fatal_syntax_error
3908 ( _("unknown or missing option to PSB"));
3912 if (o->value != 0x11)
3914 /* PSB only accepts option name 'CSYNC'. */
3916 (_("the specified option is not accepted for PSB"));
3925 /* Parse a system register or a PSTATE field name for an MSR/MRS instruction.
3926 Returns the encoding for the option, or PARSE_FAIL.
3928 If IMPLE_DEFINED_P is non-zero, the function will also try to parse the
3929 implementation defined system register name S<op0>_<op1>_<Cn>_<Cm>_<op2>.
3931 If PSTATEFIELD_P is non-zero, the function will parse the name as a PSTATE
3932 field, otherwise as a system register.
3936 parse_sys_reg (char **str, struct hash_control *sys_regs,
3937 int imple_defined_p, int pstatefield_p,
3942 const aarch64_sys_reg *o;
3946 for (q = *str; ISALNUM (*q) || *q == '_'; q++)
3948 *p++ = TOLOWER (*q);
3950 /* Assert that BUF be large enough. */
3951 gas_assert (p - buf == q - *str);
3953 o = hash_find (sys_regs, buf);
3956 if (!imple_defined_p)
3960 /* Parse S<op0>_<op1>_<Cn>_<Cm>_<op2>. */
3961 unsigned int op0, op1, cn, cm, op2;
3963 if (sscanf (buf, "s%u_%u_c%u_c%u_%u", &op0, &op1, &cn, &cm, &op2)
3966 if (op0 > 3 || op1 > 7 || cn > 15 || cm > 15 || op2 > 7)
3968 value = (op0 << 14) | (op1 << 11) | (cn << 7) | (cm << 3) | op2;
3975 if (pstatefield_p && !aarch64_pstatefield_supported_p (cpu_variant, o))
3976 as_bad (_("selected processor does not support PSTATE field "
3978 if (!pstatefield_p && !aarch64_sys_reg_supported_p (cpu_variant, o))
3979 as_bad (_("selected processor does not support system register "
3981 if (aarch64_sys_reg_deprecated_p (o))
3982 as_warn (_("system register name '%s' is deprecated and may be "
3983 "removed in a future release"), buf);
3993 /* Parse a system reg for ic/dc/at/tlbi instructions. Returns the table entry
3994 for the option, or NULL. */
3996 static const aarch64_sys_ins_reg *
3997 parse_sys_ins_reg (char **str, struct hash_control *sys_ins_regs)
4001 const aarch64_sys_ins_reg *o;
4004 for (q = *str; ISALNUM (*q) || *q == '_'; q++)
4006 *p++ = TOLOWER (*q);
4009 o = hash_find (sys_ins_regs, buf);
4013 if (!aarch64_sys_ins_reg_supported_p (cpu_variant, o))
4014 as_bad (_("selected processor does not support system register "
4021 #define po_char_or_fail(chr) do { \
4022 if (! skip_past_char (&str, chr)) \
4026 #define po_reg_or_fail(regtype) do { \
4027 val = aarch64_reg_parse (&str, regtype, &rtype, NULL); \
4028 if (val == PARSE_FAIL) \
4030 set_default_error (); \
4035 #define po_int_reg_or_fail(reg_type) do { \
4036 reg = aarch64_reg_parse_32_64 (&str, &qualifier); \
4037 if (!reg || !aarch64_check_reg_type (reg, reg_type)) \
4039 set_default_error (); \
4042 info->reg.regno = reg->number; \
4043 info->qualifier = qualifier; \
4046 #define po_imm_nc_or_fail() do { \
4047 if (! parse_constant_immediate (&str, &val, imm_reg_type)) \
4051 #define po_imm_or_fail(min, max) do { \
4052 if (! parse_constant_immediate (&str, &val, imm_reg_type)) \
4054 if (val < min || val > max) \
4056 set_fatal_syntax_error (_("immediate value out of range "\
4057 #min " to "#max)); \
4062 #define po_enum_or_fail(array) do { \
4063 if (!parse_enum_string (&str, &val, array, \
4064 ARRAY_SIZE (array), imm_reg_type)) \
4068 #define po_misc_or_fail(expr) do { \
4073 /* encode the 12-bit imm field of Add/sub immediate */
4074 static inline uint32_t
4075 encode_addsub_imm (uint32_t imm)
4080 /* encode the shift amount field of Add/sub immediate */
4081 static inline uint32_t
4082 encode_addsub_imm_shift_amount (uint32_t cnt)
4088 /* encode the imm field of Adr instruction */
4089 static inline uint32_t
4090 encode_adr_imm (uint32_t imm)
4092 return (((imm & 0x3) << 29) /* [1:0] -> [30:29] */
4093 | ((imm & (0x7ffff << 2)) << 3)); /* [20:2] -> [23:5] */
4096 /* encode the immediate field of Move wide immediate */
4097 static inline uint32_t
4098 encode_movw_imm (uint32_t imm)
4103 /* encode the 26-bit offset of unconditional branch */
4104 static inline uint32_t
4105 encode_branch_ofs_26 (uint32_t ofs)
4107 return ofs & ((1 << 26) - 1);
4110 /* encode the 19-bit offset of conditional branch and compare & branch */
4111 static inline uint32_t
4112 encode_cond_branch_ofs_19 (uint32_t ofs)
4114 return (ofs & ((1 << 19) - 1)) << 5;
4117 /* encode the 19-bit offset of ld literal */
4118 static inline uint32_t
4119 encode_ld_lit_ofs_19 (uint32_t ofs)
4121 return (ofs & ((1 << 19) - 1)) << 5;
4124 /* Encode the 14-bit offset of test & branch. */
4125 static inline uint32_t
4126 encode_tst_branch_ofs_14 (uint32_t ofs)
4128 return (ofs & ((1 << 14) - 1)) << 5;
4131 /* Encode the 16-bit imm field of svc/hvc/smc. */
4132 static inline uint32_t
4133 encode_svc_imm (uint32_t imm)
4138 /* Reencode add(s) to sub(s), or sub(s) to add(s). */
4139 static inline uint32_t
4140 reencode_addsub_switch_add_sub (uint32_t opcode)
4142 return opcode ^ (1 << 30);
4145 static inline uint32_t
4146 reencode_movzn_to_movz (uint32_t opcode)
4148 return opcode | (1 << 30);
4151 static inline uint32_t
4152 reencode_movzn_to_movn (uint32_t opcode)
4154 return opcode & ~(1 << 30);
4157 /* Overall per-instruction processing. */
4159 /* We need to be able to fix up arbitrary expressions in some statements.
4160 This is so that we can handle symbols that are an arbitrary distance from
4161 the pc. The most common cases are of the form ((+/-sym -/+ . - 8) & mask),
4162 which returns part of an address in a form which will be valid for
4163 a data instruction. We do this by pushing the expression into a symbol
4164 in the expr_section, and creating a fix for that. */
4167 fix_new_aarch64 (fragS * frag,
4169 short int size, expressionS * exp, int pc_rel, int reloc)
4179 new_fix = fix_new_exp (frag, where, size, exp, pc_rel, reloc);
4183 new_fix = fix_new (frag, where, size, make_expr_symbol (exp), 0,
4190 /* Diagnostics on operands errors. */
4192 /* By default, output verbose error message.
4193 Disable the verbose error message by -mno-verbose-error. */
4194 static int verbose_error_p = 1;
4196 #ifdef DEBUG_AARCH64
4197 /* N.B. this is only for the purpose of debugging. */
4198 const char* operand_mismatch_kind_names[] =
4201 "AARCH64_OPDE_RECOVERABLE",
4202 "AARCH64_OPDE_SYNTAX_ERROR",
4203 "AARCH64_OPDE_FATAL_SYNTAX_ERROR",
4204 "AARCH64_OPDE_INVALID_VARIANT",
4205 "AARCH64_OPDE_OUT_OF_RANGE",
4206 "AARCH64_OPDE_UNALIGNED",
4207 "AARCH64_OPDE_REG_LIST",
4208 "AARCH64_OPDE_OTHER_ERROR",
4210 #endif /* DEBUG_AARCH64 */
4212 /* Return TRUE if LHS is of higher severity than RHS, otherwise return FALSE.
4214 When multiple errors of different kinds are found in the same assembly
4215 line, only the error of the highest severity will be picked up for
4216 issuing the diagnostics. */
4218 static inline bfd_boolean
4219 operand_error_higher_severity_p (enum aarch64_operand_error_kind lhs,
4220 enum aarch64_operand_error_kind rhs)
4222 gas_assert (AARCH64_OPDE_RECOVERABLE > AARCH64_OPDE_NIL);
4223 gas_assert (AARCH64_OPDE_SYNTAX_ERROR > AARCH64_OPDE_RECOVERABLE);
4224 gas_assert (AARCH64_OPDE_FATAL_SYNTAX_ERROR > AARCH64_OPDE_SYNTAX_ERROR);
4225 gas_assert (AARCH64_OPDE_INVALID_VARIANT > AARCH64_OPDE_FATAL_SYNTAX_ERROR);
4226 gas_assert (AARCH64_OPDE_OUT_OF_RANGE > AARCH64_OPDE_INVALID_VARIANT);
4227 gas_assert (AARCH64_OPDE_UNALIGNED > AARCH64_OPDE_OUT_OF_RANGE);
4228 gas_assert (AARCH64_OPDE_REG_LIST > AARCH64_OPDE_UNALIGNED);
4229 gas_assert (AARCH64_OPDE_OTHER_ERROR > AARCH64_OPDE_REG_LIST);
4233 /* Helper routine to get the mnemonic name from the assembly instruction
4234 line; should only be called for the diagnosis purpose, as there is
4235 string copy operation involved, which may affect the runtime
4236 performance if used in elsewhere. */
4239 get_mnemonic_name (const char *str)
4241 static char mnemonic[32];
4244 /* Get the first 15 bytes and assume that the full name is included. */
4245 strncpy (mnemonic, str, 31);
4246 mnemonic[31] = '\0';
4248 /* Scan up to the end of the mnemonic, which must end in white space,
4249 '.', or end of string. */
4250 for (ptr = mnemonic; is_part_of_name(*ptr); ++ptr)
4255 /* Append '...' to the truncated long name. */
4256 if (ptr - mnemonic == 31)
4257 mnemonic[28] = mnemonic[29] = mnemonic[30] = '.';
4263 reset_aarch64_instruction (aarch64_instruction *instruction)
4265 memset (instruction, '\0', sizeof (aarch64_instruction));
4266 instruction->reloc.type = BFD_RELOC_UNUSED;
4269 /* Data structures storing one user error in the assembly code related to
4272 struct operand_error_record
4274 const aarch64_opcode *opcode;
4275 aarch64_operand_error detail;
4276 struct operand_error_record *next;
4279 typedef struct operand_error_record operand_error_record;
4281 struct operand_errors
4283 operand_error_record *head;
4284 operand_error_record *tail;
4287 typedef struct operand_errors operand_errors;
4289 /* Top-level data structure reporting user errors for the current line of
4291 The way md_assemble works is that all opcodes sharing the same mnemonic
4292 name are iterated to find a match to the assembly line. In this data
4293 structure, each of the such opcodes will have one operand_error_record
4294 allocated and inserted. In other words, excessive errors related with
4295 a single opcode are disregarded. */
4296 operand_errors operand_error_report;
4298 /* Free record nodes. */
4299 static operand_error_record *free_opnd_error_record_nodes = NULL;
4301 /* Initialize the data structure that stores the operand mismatch
4302 information on assembling one line of the assembly code. */
4304 init_operand_error_report (void)
4306 if (operand_error_report.head != NULL)
4308 gas_assert (operand_error_report.tail != NULL);
4309 operand_error_report.tail->next = free_opnd_error_record_nodes;
4310 free_opnd_error_record_nodes = operand_error_report.head;
4311 operand_error_report.head = NULL;
4312 operand_error_report.tail = NULL;
4315 gas_assert (operand_error_report.tail == NULL);
4318 /* Return TRUE if some operand error has been recorded during the
4319 parsing of the current assembly line using the opcode *OPCODE;
4320 otherwise return FALSE. */
4321 static inline bfd_boolean
4322 opcode_has_operand_error_p (const aarch64_opcode *opcode)
4324 operand_error_record *record = operand_error_report.head;
4325 return record && record->opcode == opcode;
4328 /* Add the error record *NEW_RECORD to operand_error_report. The record's
4329 OPCODE field is initialized with OPCODE.
4330 N.B. only one record for each opcode, i.e. the maximum of one error is
4331 recorded for each instruction template. */
4334 add_operand_error_record (const operand_error_record* new_record)
4336 const aarch64_opcode *opcode = new_record->opcode;
4337 operand_error_record* record = operand_error_report.head;
4339 /* The record may have been created for this opcode. If not, we need
4341 if (! opcode_has_operand_error_p (opcode))
4343 /* Get one empty record. */
4344 if (free_opnd_error_record_nodes == NULL)
4346 record = XNEW (operand_error_record);
4350 record = free_opnd_error_record_nodes;
4351 free_opnd_error_record_nodes = record->next;
4353 record->opcode = opcode;
4354 /* Insert at the head. */
4355 record->next = operand_error_report.head;
4356 operand_error_report.head = record;
4357 if (operand_error_report.tail == NULL)
4358 operand_error_report.tail = record;
4360 else if (record->detail.kind != AARCH64_OPDE_NIL
4361 && record->detail.index <= new_record->detail.index
4362 && operand_error_higher_severity_p (record->detail.kind,
4363 new_record->detail.kind))
4365 /* In the case of multiple errors found on operands related with a
4366 single opcode, only record the error of the leftmost operand and
4367 only if the error is of higher severity. */
4368 DEBUG_TRACE ("error %s on operand %d not added to the report due to"
4369 " the existing error %s on operand %d",
4370 operand_mismatch_kind_names[new_record->detail.kind],
4371 new_record->detail.index,
4372 operand_mismatch_kind_names[record->detail.kind],
4373 record->detail.index);
4377 record->detail = new_record->detail;
4381 record_operand_error_info (const aarch64_opcode *opcode,
4382 aarch64_operand_error *error_info)
4384 operand_error_record record;
4385 record.opcode = opcode;
4386 record.detail = *error_info;
4387 add_operand_error_record (&record);
4390 /* Record an error of kind KIND and, if ERROR is not NULL, of the detailed
4391 error message *ERROR, for operand IDX (count from 0). */
4394 record_operand_error (const aarch64_opcode *opcode, int idx,
4395 enum aarch64_operand_error_kind kind,
4398 aarch64_operand_error info;
4399 memset(&info, 0, sizeof (info));
4403 info.non_fatal = FALSE;
4404 record_operand_error_info (opcode, &info);
4408 record_operand_error_with_data (const aarch64_opcode *opcode, int idx,
4409 enum aarch64_operand_error_kind kind,
4410 const char* error, const int *extra_data)
4412 aarch64_operand_error info;
4416 info.data[0] = extra_data[0];
4417 info.data[1] = extra_data[1];
4418 info.data[2] = extra_data[2];
4419 info.non_fatal = FALSE;
4420 record_operand_error_info (opcode, &info);
4424 record_operand_out_of_range_error (const aarch64_opcode *opcode, int idx,
4425 const char* error, int lower_bound,
4428 int data[3] = {lower_bound, upper_bound, 0};
4429 record_operand_error_with_data (opcode, idx, AARCH64_OPDE_OUT_OF_RANGE,
4433 /* Remove the operand error record for *OPCODE. */
4434 static void ATTRIBUTE_UNUSED
4435 remove_operand_error_record (const aarch64_opcode *opcode)
4437 if (opcode_has_operand_error_p (opcode))
4439 operand_error_record* record = operand_error_report.head;
4440 gas_assert (record != NULL && operand_error_report.tail != NULL);
4441 operand_error_report.head = record->next;
4442 record->next = free_opnd_error_record_nodes;
4443 free_opnd_error_record_nodes = record;
4444 if (operand_error_report.head == NULL)
4446 gas_assert (operand_error_report.tail == record);
4447 operand_error_report.tail = NULL;
4452 /* Given the instruction in *INSTR, return the index of the best matched
4453 qualifier sequence in the list (an array) headed by QUALIFIERS_LIST.
4455 Return -1 if there is no qualifier sequence; return the first match
4456 if there is multiple matches found. */
4459 find_best_match (const aarch64_inst *instr,
4460 const aarch64_opnd_qualifier_seq_t *qualifiers_list)
4462 int i, num_opnds, max_num_matched, idx;
4464 num_opnds = aarch64_num_of_operands (instr->opcode);
4467 DEBUG_TRACE ("no operand");
4471 max_num_matched = 0;
4474 /* For each pattern. */
4475 for (i = 0; i < AARCH64_MAX_QLF_SEQ_NUM; ++i, ++qualifiers_list)
4478 const aarch64_opnd_qualifier_t *qualifiers = *qualifiers_list;
4480 /* Most opcodes has much fewer patterns in the list. */
4481 if (empty_qualifier_sequence_p (qualifiers))
4483 DEBUG_TRACE_IF (i == 0, "empty list of qualifier sequence");
4487 for (j = 0, num_matched = 0; j < num_opnds; ++j, ++qualifiers)
4488 if (*qualifiers == instr->operands[j].qualifier)
4491 if (num_matched > max_num_matched)
4493 max_num_matched = num_matched;
4498 DEBUG_TRACE ("return with %d", idx);
4502 /* Assign qualifiers in the qualifier sequence (headed by QUALIFIERS) to the
4503 corresponding operands in *INSTR. */
4506 assign_qualifier_sequence (aarch64_inst *instr,
4507 const aarch64_opnd_qualifier_t *qualifiers)
4510 int num_opnds = aarch64_num_of_operands (instr->opcode);
4511 gas_assert (num_opnds);
4512 for (i = 0; i < num_opnds; ++i, ++qualifiers)
4513 instr->operands[i].qualifier = *qualifiers;
4516 /* Print operands for the diagnosis purpose. */
4519 print_operands (char *buf, const aarch64_opcode *opcode,
4520 const aarch64_opnd_info *opnds)
4524 for (i = 0; i < AARCH64_MAX_OPND_NUM; ++i)
4528 /* We regard the opcode operand info more, however we also look into
4529 the inst->operands to support the disassembling of the optional
4531 The two operand code should be the same in all cases, apart from
4532 when the operand can be optional. */
4533 if (opcode->operands[i] == AARCH64_OPND_NIL
4534 || opnds[i].type == AARCH64_OPND_NIL)
4537 /* Generate the operand string in STR. */
4538 aarch64_print_operand (str, sizeof (str), 0, opcode, opnds, i, NULL, NULL,
4543 strcat (buf, i == 0 ? " " : ", ");
4545 /* Append the operand string. */
4550 /* Send to stderr a string as information. */
4553 output_info (const char *format, ...)
4559 file = as_where (&line);
4563 fprintf (stderr, "%s:%u: ", file, line);
4565 fprintf (stderr, "%s: ", file);
4567 fprintf (stderr, _("Info: "));
4568 va_start (args, format);
4569 vfprintf (stderr, format, args);
4571 (void) putc ('\n', stderr);
4574 /* Output one operand error record. */
4577 output_operand_error_record (const operand_error_record *record, char *str)
4579 const aarch64_operand_error *detail = &record->detail;
4580 int idx = detail->index;
4581 const aarch64_opcode *opcode = record->opcode;
4582 enum aarch64_opnd opd_code = (idx >= 0 ? opcode->operands[idx]
4583 : AARCH64_OPND_NIL);
4585 typedef void (*handler_t)(const char *format, ...);
4586 handler_t handler = detail->non_fatal ? as_warn : as_bad;
4588 switch (detail->kind)
4590 case AARCH64_OPDE_NIL:
4593 case AARCH64_OPDE_SYNTAX_ERROR:
4594 case AARCH64_OPDE_RECOVERABLE:
4595 case AARCH64_OPDE_FATAL_SYNTAX_ERROR:
4596 case AARCH64_OPDE_OTHER_ERROR:
4597 /* Use the prepared error message if there is, otherwise use the
4598 operand description string to describe the error. */
4599 if (detail->error != NULL)
4602 handler (_("%s -- `%s'"), detail->error, str);
4604 handler (_("%s at operand %d -- `%s'"),
4605 detail->error, idx + 1, str);
4609 gas_assert (idx >= 0);
4610 handler (_("operand %d must be %s -- `%s'"), idx + 1,
4611 aarch64_get_operand_desc (opd_code), str);
4615 case AARCH64_OPDE_INVALID_VARIANT:
4616 handler (_("operand mismatch -- `%s'"), str);
4617 if (verbose_error_p)
4619 /* We will try to correct the erroneous instruction and also provide
4620 more information e.g. all other valid variants.
4622 The string representation of the corrected instruction and other
4623 valid variants are generated by
4625 1) obtaining the intermediate representation of the erroneous
4627 2) manipulating the IR, e.g. replacing the operand qualifier;
4628 3) printing out the instruction by calling the printer functions
4629 shared with the disassembler.
4631 The limitation of this method is that the exact input assembly
4632 line cannot be accurately reproduced in some cases, for example an
4633 optional operand present in the actual assembly line will be
4634 omitted in the output; likewise for the optional syntax rules,
4635 e.g. the # before the immediate. Another limitation is that the
4636 assembly symbols and relocation operations in the assembly line
4637 currently cannot be printed out in the error report. Last but not
4638 least, when there is other error(s) co-exist with this error, the
4639 'corrected' instruction may be still incorrect, e.g. given
4640 'ldnp h0,h1,[x0,#6]!'
4641 this diagnosis will provide the version:
4642 'ldnp s0,s1,[x0,#6]!'
4643 which is still not right. */
4644 size_t len = strlen (get_mnemonic_name (str));
4648 aarch64_inst *inst_base = &inst.base;
4649 const aarch64_opnd_qualifier_seq_t *qualifiers_list;
4652 reset_aarch64_instruction (&inst);
4653 inst_base->opcode = opcode;
4655 /* Reset the error report so that there is no side effect on the
4656 following operand parsing. */
4657 init_operand_error_report ();
4660 result = parse_operands (str + len, opcode)
4661 && programmer_friendly_fixup (&inst);
4662 gas_assert (result);
4663 result = aarch64_opcode_encode (opcode, inst_base, &inst_base->value,
4665 gas_assert (!result);
4667 /* Find the most matched qualifier sequence. */
4668 qlf_idx = find_best_match (inst_base, opcode->qualifiers_list);
4669 gas_assert (qlf_idx > -1);
4671 /* Assign the qualifiers. */
4672 assign_qualifier_sequence (inst_base,
4673 opcode->qualifiers_list[qlf_idx]);
4675 /* Print the hint. */
4676 output_info (_(" did you mean this?"));
4677 snprintf (buf, sizeof (buf), "\t%s", get_mnemonic_name (str));
4678 print_operands (buf, opcode, inst_base->operands);
4679 output_info (_(" %s"), buf);
4681 /* Print out other variant(s) if there is any. */
4683 !empty_qualifier_sequence_p (opcode->qualifiers_list[1]))
4684 output_info (_(" other valid variant(s):"));
4686 /* For each pattern. */
4687 qualifiers_list = opcode->qualifiers_list;
4688 for (i = 0; i < AARCH64_MAX_QLF_SEQ_NUM; ++i, ++qualifiers_list)
4690 /* Most opcodes has much fewer patterns in the list.
4691 First NIL qualifier indicates the end in the list. */
4692 if (empty_qualifier_sequence_p (*qualifiers_list))
4697 /* Mnemonics name. */
4698 snprintf (buf, sizeof (buf), "\t%s", get_mnemonic_name (str));
4700 /* Assign the qualifiers. */
4701 assign_qualifier_sequence (inst_base, *qualifiers_list);
4703 /* Print instruction. */
4704 print_operands (buf, opcode, inst_base->operands);
4706 output_info (_(" %s"), buf);
4712 case AARCH64_OPDE_UNTIED_OPERAND:
4713 handler (_("operand %d must be the same register as operand 1 -- `%s'"),
4714 detail->index + 1, str);
4717 case AARCH64_OPDE_OUT_OF_RANGE:
4718 if (detail->data[0] != detail->data[1])
4719 handler (_("%s out of range %d to %d at operand %d -- `%s'"),
4720 detail->error ? detail->error : _("immediate value"),
4721 detail->data[0], detail->data[1], idx + 1, str);
4723 handler (_("%s must be %d at operand %d -- `%s'"),
4724 detail->error ? detail->error : _("immediate value"),
4725 detail->data[0], idx + 1, str);
4728 case AARCH64_OPDE_REG_LIST:
4729 if (detail->data[0] == 1)
4730 handler (_("invalid number of registers in the list; "
4731 "only 1 register is expected at operand %d -- `%s'"),
4734 handler (_("invalid number of registers in the list; "
4735 "%d registers are expected at operand %d -- `%s'"),
4736 detail->data[0], idx + 1, str);
4739 case AARCH64_OPDE_UNALIGNED:
4740 handler (_("immediate value must be a multiple of "
4741 "%d at operand %d -- `%s'"),
4742 detail->data[0], idx + 1, str);
4751 /* Process and output the error message about the operand mismatching.
4753 When this function is called, the operand error information had
4754 been collected for an assembly line and there will be multiple
4755 errors in the case of multiple instruction templates; output the
4756 error message that most closely describes the problem.
4758 The errors to be printed can be filtered on printing all errors
4759 or only non-fatal errors. This distinction has to be made because
4760 the error buffer may already be filled with fatal errors we don't want to
4761 print due to the different instruction templates. */
4764 output_operand_error_report (char *str, bfd_boolean non_fatal_only)
4766 int largest_error_pos;
4767 const char *msg = NULL;
4768 enum aarch64_operand_error_kind kind;
4769 operand_error_record *curr;
4770 operand_error_record *head = operand_error_report.head;
4771 operand_error_record *record = NULL;
4773 /* No error to report. */
4777 gas_assert (head != NULL && operand_error_report.tail != NULL);
4779 /* Only one error. */
4780 if (head == operand_error_report.tail)
4782 /* If the only error is a non-fatal one and we don't want to print it,
4784 if (!non_fatal_only || head->detail.non_fatal)
4786 DEBUG_TRACE ("single opcode entry with error kind: %s",
4787 operand_mismatch_kind_names[head->detail.kind]);
4788 output_operand_error_record (head, str);
4793 /* Find the error kind of the highest severity. */
4794 DEBUG_TRACE ("multiple opcode entries with error kind");
4795 kind = AARCH64_OPDE_NIL;
4796 for (curr = head; curr != NULL; curr = curr->next)
4798 gas_assert (curr->detail.kind != AARCH64_OPDE_NIL);
4799 DEBUG_TRACE ("\t%s", operand_mismatch_kind_names[curr->detail.kind]);
4800 if (operand_error_higher_severity_p (curr->detail.kind, kind))
4801 kind = curr->detail.kind;
4803 gas_assert (kind != AARCH64_OPDE_NIL);
4805 /* Pick up one of errors of KIND to report. */
4806 largest_error_pos = -2; /* Index can be -1 which means unknown index. */
4807 for (curr = head; curr != NULL; curr = curr->next)
4809 /* If we don't want to print non-fatal errors then don't consider them
4811 if (curr->detail.kind != kind
4812 || (non_fatal_only && !head->detail.non_fatal))
4814 /* If there are multiple errors, pick up the one with the highest
4815 mismatching operand index. In the case of multiple errors with
4816 the equally highest operand index, pick up the first one or the
4817 first one with non-NULL error message. */
4818 if (curr->detail.index > largest_error_pos
4819 || (curr->detail.index == largest_error_pos && msg == NULL
4820 && curr->detail.error != NULL))
4822 largest_error_pos = curr->detail.index;
4824 msg = record->detail.error;
4828 /* The way errors are collected in the back-end is a bit non-intuitive. But
4829 essentially, because each operand template is tried recursively you may
4830 always have errors collected from the previous tried OPND. These are
4831 usually skipped if there is one successful match. However now with the
4832 non-fatal errors we have to ignore those previously collected hard errors
4833 when we're only interested in printing the non-fatal ones. This condition
4834 prevents us from printing errors that are not appropriate, since we did
4835 match a condition, but it also has warnings that it wants to print. */
4836 if (non_fatal_only && !record)
4839 gas_assert (largest_error_pos != -2 && record != NULL);
4840 DEBUG_TRACE ("Pick up error kind %s to report",
4841 operand_mismatch_kind_names[record->detail.kind]);
4844 output_operand_error_record (record, str);
4847 /* Write an AARCH64 instruction to buf - always little-endian. */
4849 put_aarch64_insn (char *buf, uint32_t insn)
4851 unsigned char *where = (unsigned char *) buf;
4853 where[1] = insn >> 8;
4854 where[2] = insn >> 16;
4855 where[3] = insn >> 24;
4859 get_aarch64_insn (char *buf)
4861 unsigned char *where = (unsigned char *) buf;
4863 result = (where[0] | (where[1] << 8) | (where[2] << 16) | (where[3] << 24));
4868 output_inst (struct aarch64_inst *new_inst)
4872 to = frag_more (INSN_SIZE);
4874 frag_now->tc_frag_data.recorded = 1;
4876 put_aarch64_insn (to, inst.base.value);
4878 if (inst.reloc.type != BFD_RELOC_UNUSED)
4880 fixS *fixp = fix_new_aarch64 (frag_now, to - frag_now->fr_literal,
4881 INSN_SIZE, &inst.reloc.exp,
4884 DEBUG_TRACE ("Prepared relocation fix up");
4885 /* Don't check the addend value against the instruction size,
4886 that's the job of our code in md_apply_fix(). */
4887 fixp->fx_no_overflow = 1;
4888 if (new_inst != NULL)
4889 fixp->tc_fix_data.inst = new_inst;
4890 if (aarch64_gas_internal_fixup_p ())
4892 gas_assert (inst.reloc.opnd != AARCH64_OPND_NIL);
4893 fixp->tc_fix_data.opnd = inst.reloc.opnd;
4894 fixp->fx_addnumber = inst.reloc.flags;
4898 dwarf2_emit_insn (INSN_SIZE);
4901 /* Link together opcodes of the same name. */
4905 aarch64_opcode *opcode;
4906 struct templates *next;
4909 typedef struct templates templates;
4912 lookup_mnemonic (const char *start, int len)
4914 templates *templ = NULL;
4916 templ = hash_find_n (aarch64_ops_hsh, start, len);
4920 /* Subroutine of md_assemble, responsible for looking up the primary
4921 opcode from the mnemonic the user wrote. STR points to the
4922 beginning of the mnemonic. */
4925 opcode_lookup (char **str)
4927 char *end, *base, *dot;
4928 const aarch64_cond *cond;
4932 /* Scan up to the end of the mnemonic, which must end in white space,
4933 '.', or end of string. */
4935 for (base = end = *str; is_part_of_name(*end); end++)
4936 if (*end == '.' && !dot)
4939 if (end == base || dot == base)
4942 inst.cond = COND_ALWAYS;
4944 /* Handle a possible condition. */
4947 cond = hash_find_n (aarch64_cond_hsh, dot + 1, end - dot - 1);
4950 inst.cond = cond->value;
4966 if (inst.cond == COND_ALWAYS)
4968 /* Look for unaffixed mnemonic. */
4969 return lookup_mnemonic (base, len);
4973 /* append ".c" to mnemonic if conditional */
4974 memcpy (condname, base, len);
4975 memcpy (condname + len, ".c", 2);
4978 return lookup_mnemonic (base, len);
4984 /* Internal helper routine converting a vector_type_el structure *VECTYPE
4985 to a corresponding operand qualifier. */
4987 static inline aarch64_opnd_qualifier_t
4988 vectype_to_qualifier (const struct vector_type_el *vectype)
4990 /* Element size in bytes indexed by vector_el_type. */
4991 const unsigned char ele_size[5]
4993 const unsigned int ele_base [5] =
4995 AARCH64_OPND_QLF_V_4B,
4996 AARCH64_OPND_QLF_V_2H,
4997 AARCH64_OPND_QLF_V_2S,
4998 AARCH64_OPND_QLF_V_1D,
4999 AARCH64_OPND_QLF_V_1Q
5002 if (!vectype->defined || vectype->type == NT_invtype)
5003 goto vectype_conversion_fail;
5005 if (vectype->type == NT_zero)
5006 return AARCH64_OPND_QLF_P_Z;
5007 if (vectype->type == NT_merge)
5008 return AARCH64_OPND_QLF_P_M;
5010 gas_assert (vectype->type >= NT_b && vectype->type <= NT_q);
5012 if (vectype->defined & (NTA_HASINDEX | NTA_HASVARWIDTH))
5014 /* Special case S_4B. */
5015 if (vectype->type == NT_b && vectype->width == 4)
5016 return AARCH64_OPND_QLF_S_4B;
5018 /* Vector element register. */
5019 return AARCH64_OPND_QLF_S_B + vectype->type;
5023 /* Vector register. */
5024 int reg_size = ele_size[vectype->type] * vectype->width;
5027 if (reg_size != 16 && reg_size != 8 && reg_size != 4)
5028 goto vectype_conversion_fail;
5030 /* The conversion is by calculating the offset from the base operand
5031 qualifier for the vector type. The operand qualifiers are regular
5032 enough that the offset can established by shifting the vector width by
5033 a vector-type dependent amount. */
5035 if (vectype->type == NT_b)
5037 else if (vectype->type == NT_h || vectype->type == NT_s)
5039 else if (vectype->type >= NT_d)
5044 offset = ele_base [vectype->type] + (vectype->width >> shift);
5045 gas_assert (AARCH64_OPND_QLF_V_4B <= offset
5046 && offset <= AARCH64_OPND_QLF_V_1Q);
5050 vectype_conversion_fail:
5051 first_error (_("bad vector arrangement type"));
5052 return AARCH64_OPND_QLF_NIL;
5055 /* Process an optional operand that is found omitted from the assembly line.
5056 Fill *OPERAND for such an operand of type TYPE. OPCODE points to the
5057 instruction's opcode entry while IDX is the index of this omitted operand.
5061 process_omitted_operand (enum aarch64_opnd type, const aarch64_opcode *opcode,
5062 int idx, aarch64_opnd_info *operand)
5064 aarch64_insn default_value = get_optional_operand_default_value (opcode);
5065 gas_assert (optional_operand_p (opcode, idx));
5066 gas_assert (!operand->present);
5070 case AARCH64_OPND_Rd:
5071 case AARCH64_OPND_Rn:
5072 case AARCH64_OPND_Rm:
5073 case AARCH64_OPND_Rt:
5074 case AARCH64_OPND_Rt2:
5075 case AARCH64_OPND_Rs:
5076 case AARCH64_OPND_Ra:
5077 case AARCH64_OPND_Rt_SYS:
5078 case AARCH64_OPND_Rd_SP:
5079 case AARCH64_OPND_Rn_SP:
5080 case AARCH64_OPND_Rm_SP:
5081 case AARCH64_OPND_Fd:
5082 case AARCH64_OPND_Fn:
5083 case AARCH64_OPND_Fm:
5084 case AARCH64_OPND_Fa:
5085 case AARCH64_OPND_Ft:
5086 case AARCH64_OPND_Ft2:
5087 case AARCH64_OPND_Sd:
5088 case AARCH64_OPND_Sn:
5089 case AARCH64_OPND_Sm:
5090 case AARCH64_OPND_Va:
5091 case AARCH64_OPND_Vd:
5092 case AARCH64_OPND_Vn:
5093 case AARCH64_OPND_Vm:
5094 case AARCH64_OPND_VdD1:
5095 case AARCH64_OPND_VnD1:
5096 operand->reg.regno = default_value;
5099 case AARCH64_OPND_Ed:
5100 case AARCH64_OPND_En:
5101 case AARCH64_OPND_Em:
5102 case AARCH64_OPND_SM3_IMM2:
5103 operand->reglane.regno = default_value;
5106 case AARCH64_OPND_IDX:
5107 case AARCH64_OPND_BIT_NUM:
5108 case AARCH64_OPND_IMMR:
5109 case AARCH64_OPND_IMMS:
5110 case AARCH64_OPND_SHLL_IMM:
5111 case AARCH64_OPND_IMM_VLSL:
5112 case AARCH64_OPND_IMM_VLSR:
5113 case AARCH64_OPND_CCMP_IMM:
5114 case AARCH64_OPND_FBITS:
5115 case AARCH64_OPND_UIMM4:
5116 case AARCH64_OPND_UIMM3_OP1:
5117 case AARCH64_OPND_UIMM3_OP2:
5118 case AARCH64_OPND_IMM:
5119 case AARCH64_OPND_IMM_2:
5120 case AARCH64_OPND_WIDTH:
5121 case AARCH64_OPND_UIMM7:
5122 case AARCH64_OPND_NZCV:
5123 case AARCH64_OPND_SVE_PATTERN:
5124 case AARCH64_OPND_SVE_PRFOP:
5125 operand->imm.value = default_value;
5128 case AARCH64_OPND_SVE_PATTERN_SCALED:
5129 operand->imm.value = default_value;
5130 operand->shifter.kind = AARCH64_MOD_MUL;
5131 operand->shifter.amount = 1;
5134 case AARCH64_OPND_EXCEPTION:
5135 inst.reloc.type = BFD_RELOC_UNUSED;
5138 case AARCH64_OPND_BARRIER_ISB:
5139 operand->barrier = aarch64_barrier_options + default_value;
5146 /* Process the relocation type for move wide instructions.
5147 Return TRUE on success; otherwise return FALSE. */
5150 process_movw_reloc_info (void)
5155 is32 = inst.base.operands[0].qualifier == AARCH64_OPND_QLF_W ? 1 : 0;
5157 if (inst.base.opcode->op == OP_MOVK)
5158 switch (inst.reloc.type)
5160 case BFD_RELOC_AARCH64_MOVW_G0_S:
5161 case BFD_RELOC_AARCH64_MOVW_G1_S:
5162 case BFD_RELOC_AARCH64_MOVW_G2_S:
5163 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
5164 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
5165 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
5166 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
5167 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5168 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
5169 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
5170 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
5172 (_("the specified relocation type is not allowed for MOVK"));
5178 switch (inst.reloc.type)
5180 case BFD_RELOC_AARCH64_MOVW_G0:
5181 case BFD_RELOC_AARCH64_MOVW_G0_NC:
5182 case BFD_RELOC_AARCH64_MOVW_G0_S:
5183 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5184 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
5185 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
5186 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5187 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
5188 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5189 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
5190 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
5191 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
5192 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
5195 case BFD_RELOC_AARCH64_MOVW_G1:
5196 case BFD_RELOC_AARCH64_MOVW_G1_NC:
5197 case BFD_RELOC_AARCH64_MOVW_G1_S:
5198 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
5199 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
5200 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
5201 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5202 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5203 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
5204 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
5205 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
5206 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
5207 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
5210 case BFD_RELOC_AARCH64_MOVW_G2:
5211 case BFD_RELOC_AARCH64_MOVW_G2_NC:
5212 case BFD_RELOC_AARCH64_MOVW_G2_S:
5213 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
5214 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
5215 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
5216 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
5219 set_fatal_syntax_error
5220 (_("the specified relocation type is not allowed for 32-bit "
5226 case BFD_RELOC_AARCH64_MOVW_G3:
5227 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
5230 set_fatal_syntax_error
5231 (_("the specified relocation type is not allowed for 32-bit "
5238 /* More cases should be added when more MOVW-related relocation types
5239 are supported in GAS. */
5240 gas_assert (aarch64_gas_internal_fixup_p ());
5241 /* The shift amount should have already been set by the parser. */
5244 inst.base.operands[1].shifter.amount = shift;
5248 /* A primitive log calculator. */
5250 static inline unsigned int
5251 get_logsz (unsigned int size)
5253 const unsigned char ls[16] =
5254 {0, 1, -1, 2, -1, -1, -1, 3, -1, -1, -1, -1, -1, -1, -1, 4};
5260 gas_assert (ls[size - 1] != (unsigned char)-1);
5261 return ls[size - 1];
5264 /* Determine and return the real reloc type code for an instruction
5265 with the pseudo reloc type code BFD_RELOC_AARCH64_LDST_LO12. */
5267 static inline bfd_reloc_code_real_type
5268 ldst_lo12_determine_real_reloc_type (void)
5271 enum aarch64_opnd_qualifier opd0_qlf = inst.base.operands[0].qualifier;
5272 enum aarch64_opnd_qualifier opd1_qlf = inst.base.operands[1].qualifier;
5274 const bfd_reloc_code_real_type reloc_ldst_lo12[5][5] = {
5276 BFD_RELOC_AARCH64_LDST8_LO12,
5277 BFD_RELOC_AARCH64_LDST16_LO12,
5278 BFD_RELOC_AARCH64_LDST32_LO12,
5279 BFD_RELOC_AARCH64_LDST64_LO12,
5280 BFD_RELOC_AARCH64_LDST128_LO12
5283 BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12,
5284 BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12,
5285 BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12,
5286 BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12,
5287 BFD_RELOC_AARCH64_NONE
5290 BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC,
5291 BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC,
5292 BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC,
5293 BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC,
5294 BFD_RELOC_AARCH64_NONE
5297 BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12,
5298 BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12,
5299 BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12,
5300 BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12,
5301 BFD_RELOC_AARCH64_NONE
5304 BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC,
5305 BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC,
5306 BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC,
5307 BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC,
5308 BFD_RELOC_AARCH64_NONE
5312 gas_assert (inst.reloc.type == BFD_RELOC_AARCH64_LDST_LO12
5313 || inst.reloc.type == BFD_RELOC_AARCH64_TLSLD_LDST_DTPREL_LO12
5315 == BFD_RELOC_AARCH64_TLSLD_LDST_DTPREL_LO12_NC)
5317 == BFD_RELOC_AARCH64_TLSLE_LDST_TPREL_LO12)
5319 == BFD_RELOC_AARCH64_TLSLE_LDST_TPREL_LO12_NC));
5320 gas_assert (inst.base.opcode->operands[1] == AARCH64_OPND_ADDR_UIMM12);
5322 if (opd1_qlf == AARCH64_OPND_QLF_NIL)
5324 aarch64_get_expected_qualifier (inst.base.opcode->qualifiers_list,
5326 gas_assert (opd1_qlf != AARCH64_OPND_QLF_NIL);
5328 logsz = get_logsz (aarch64_get_qualifier_esize (opd1_qlf));
5329 if (inst.reloc.type == BFD_RELOC_AARCH64_TLSLD_LDST_DTPREL_LO12
5330 || inst.reloc.type == BFD_RELOC_AARCH64_TLSLD_LDST_DTPREL_LO12_NC
5331 || inst.reloc.type == BFD_RELOC_AARCH64_TLSLE_LDST_TPREL_LO12
5332 || inst.reloc.type == BFD_RELOC_AARCH64_TLSLE_LDST_TPREL_LO12_NC)
5333 gas_assert (logsz <= 3);
5335 gas_assert (logsz <= 4);
5337 /* In reloc.c, these pseudo relocation types should be defined in similar
5338 order as above reloc_ldst_lo12 array. Because the array index calculation
5339 below relies on this. */
5340 return reloc_ldst_lo12[inst.reloc.type - BFD_RELOC_AARCH64_LDST_LO12][logsz];
5343 /* Check whether a register list REGINFO is valid. The registers must be
5344 numbered in increasing order (modulo 32), in increments of one or two.
5346 If ACCEPT_ALTERNATE is non-zero, the register numbers should be in
5349 Return FALSE if such a register list is invalid, otherwise return TRUE. */
5352 reg_list_valid_p (uint32_t reginfo, int accept_alternate)
5354 uint32_t i, nb_regs, prev_regno, incr;
5356 nb_regs = 1 + (reginfo & 0x3);
5358 prev_regno = reginfo & 0x1f;
5359 incr = accept_alternate ? 2 : 1;
5361 for (i = 1; i < nb_regs; ++i)
5363 uint32_t curr_regno;
5365 curr_regno = reginfo & 0x1f;
5366 if (curr_regno != ((prev_regno + incr) & 0x1f))
5368 prev_regno = curr_regno;
5374 /* Generic instruction operand parser. This does no encoding and no
5375 semantic validation; it merely squirrels values away in the inst
5376 structure. Returns TRUE or FALSE depending on whether the
5377 specified grammar matched. */
5380 parse_operands (char *str, const aarch64_opcode *opcode)
5383 char *backtrack_pos = 0;
5384 const enum aarch64_opnd *operands = opcode->operands;
5385 aarch64_reg_type imm_reg_type;
5388 skip_whitespace (str);
5390 if (AARCH64_CPU_HAS_FEATURE (AARCH64_FEATURE_SVE, *opcode->avariant))
5391 imm_reg_type = REG_TYPE_R_Z_SP_BHSDQ_VZP;
5393 imm_reg_type = REG_TYPE_R_Z_BHSDQ_V;
5395 for (i = 0; operands[i] != AARCH64_OPND_NIL; i++)
5398 const reg_entry *reg;
5399 int comma_skipped_p = 0;
5400 aarch64_reg_type rtype;
5401 struct vector_type_el vectype;
5402 aarch64_opnd_qualifier_t qualifier, base_qualifier, offset_qualifier;
5403 aarch64_opnd_info *info = &inst.base.operands[i];
5404 aarch64_reg_type reg_type;
5406 DEBUG_TRACE ("parse operand %d", i);
5408 /* Assign the operand code. */
5409 info->type = operands[i];
5411 if (optional_operand_p (opcode, i))
5413 /* Remember where we are in case we need to backtrack. */
5414 gas_assert (!backtrack_pos);
5415 backtrack_pos = str;
5418 /* Expect comma between operands; the backtrack mechanism will take
5419 care of cases of omitted optional operand. */
5420 if (i > 0 && ! skip_past_char (&str, ','))
5422 set_syntax_error (_("comma expected between operands"));
5426 comma_skipped_p = 1;
5428 switch (operands[i])
5430 case AARCH64_OPND_Rd:
5431 case AARCH64_OPND_Rn:
5432 case AARCH64_OPND_Rm:
5433 case AARCH64_OPND_Rt:
5434 case AARCH64_OPND_Rt2:
5435 case AARCH64_OPND_Rs:
5436 case AARCH64_OPND_Ra:
5437 case AARCH64_OPND_Rt_SYS:
5438 case AARCH64_OPND_PAIRREG:
5439 case AARCH64_OPND_SVE_Rm:
5440 po_int_reg_or_fail (REG_TYPE_R_Z);
5443 case AARCH64_OPND_Rd_SP:
5444 case AARCH64_OPND_Rn_SP:
5445 case AARCH64_OPND_SVE_Rn_SP:
5446 case AARCH64_OPND_Rm_SP:
5447 po_int_reg_or_fail (REG_TYPE_R_SP);
5450 case AARCH64_OPND_Rm_EXT:
5451 case AARCH64_OPND_Rm_SFT:
5452 po_misc_or_fail (parse_shifter_operand
5453 (&str, info, (operands[i] == AARCH64_OPND_Rm_EXT
5455 : SHIFTED_LOGIC_IMM)));
5456 if (!info->shifter.operator_present)
5458 /* Default to LSL if not present. Libopcodes prefers shifter
5459 kind to be explicit. */
5460 gas_assert (info->shifter.kind == AARCH64_MOD_NONE);
5461 info->shifter.kind = AARCH64_MOD_LSL;
5462 /* For Rm_EXT, libopcodes will carry out further check on whether
5463 or not stack pointer is used in the instruction (Recall that
5464 "the extend operator is not optional unless at least one of
5465 "Rd" or "Rn" is '11111' (i.e. WSP)"). */
5469 case AARCH64_OPND_Fd:
5470 case AARCH64_OPND_Fn:
5471 case AARCH64_OPND_Fm:
5472 case AARCH64_OPND_Fa:
5473 case AARCH64_OPND_Ft:
5474 case AARCH64_OPND_Ft2:
5475 case AARCH64_OPND_Sd:
5476 case AARCH64_OPND_Sn:
5477 case AARCH64_OPND_Sm:
5478 case AARCH64_OPND_SVE_VZn:
5479 case AARCH64_OPND_SVE_Vd:
5480 case AARCH64_OPND_SVE_Vm:
5481 case AARCH64_OPND_SVE_Vn:
5482 val = aarch64_reg_parse (&str, REG_TYPE_BHSDQ, &rtype, NULL);
5483 if (val == PARSE_FAIL)
5485 first_error (_(get_reg_expected_msg (REG_TYPE_BHSDQ)));
5488 gas_assert (rtype >= REG_TYPE_FP_B && rtype <= REG_TYPE_FP_Q);
5490 info->reg.regno = val;
5491 info->qualifier = AARCH64_OPND_QLF_S_B + (rtype - REG_TYPE_FP_B);
5494 case AARCH64_OPND_SVE_Pd:
5495 case AARCH64_OPND_SVE_Pg3:
5496 case AARCH64_OPND_SVE_Pg4_5:
5497 case AARCH64_OPND_SVE_Pg4_10:
5498 case AARCH64_OPND_SVE_Pg4_16:
5499 case AARCH64_OPND_SVE_Pm:
5500 case AARCH64_OPND_SVE_Pn:
5501 case AARCH64_OPND_SVE_Pt:
5502 reg_type = REG_TYPE_PN;
5505 case AARCH64_OPND_SVE_Za_5:
5506 case AARCH64_OPND_SVE_Za_16:
5507 case AARCH64_OPND_SVE_Zd:
5508 case AARCH64_OPND_SVE_Zm_5:
5509 case AARCH64_OPND_SVE_Zm_16:
5510 case AARCH64_OPND_SVE_Zn:
5511 case AARCH64_OPND_SVE_Zt:
5512 reg_type = REG_TYPE_ZN;
5515 case AARCH64_OPND_Va:
5516 case AARCH64_OPND_Vd:
5517 case AARCH64_OPND_Vn:
5518 case AARCH64_OPND_Vm:
5519 reg_type = REG_TYPE_VN;
5521 val = aarch64_reg_parse (&str, reg_type, NULL, &vectype);
5522 if (val == PARSE_FAIL)
5524 first_error (_(get_reg_expected_msg (reg_type)));
5527 if (vectype.defined & NTA_HASINDEX)
5530 info->reg.regno = val;
5531 if ((reg_type == REG_TYPE_PN || reg_type == REG_TYPE_ZN)
5532 && vectype.type == NT_invtype)
5533 /* Unqualified Pn and Zn registers are allowed in certain
5534 contexts. Rely on F_STRICT qualifier checking to catch
5536 info->qualifier = AARCH64_OPND_QLF_NIL;
5539 info->qualifier = vectype_to_qualifier (&vectype);
5540 if (info->qualifier == AARCH64_OPND_QLF_NIL)
5545 case AARCH64_OPND_VdD1:
5546 case AARCH64_OPND_VnD1:
5547 val = aarch64_reg_parse (&str, REG_TYPE_VN, NULL, &vectype);
5548 if (val == PARSE_FAIL)
5550 set_first_syntax_error (_(get_reg_expected_msg (REG_TYPE_VN)));
5553 if (vectype.type != NT_d || vectype.index != 1)
5555 set_fatal_syntax_error
5556 (_("the top half of a 128-bit FP/SIMD register is expected"));
5559 info->reg.regno = val;
5560 /* N.B: VdD1 and VnD1 are treated as an fp or advsimd scalar register
5561 here; it is correct for the purpose of encoding/decoding since
5562 only the register number is explicitly encoded in the related
5563 instructions, although this appears a bit hacky. */
5564 info->qualifier = AARCH64_OPND_QLF_S_D;
5567 case AARCH64_OPND_SVE_Zm3_INDEX:
5568 case AARCH64_OPND_SVE_Zm3_22_INDEX:
5569 case AARCH64_OPND_SVE_Zm4_INDEX:
5570 case AARCH64_OPND_SVE_Zn_INDEX:
5571 reg_type = REG_TYPE_ZN;
5572 goto vector_reg_index;
5574 case AARCH64_OPND_Ed:
5575 case AARCH64_OPND_En:
5576 case AARCH64_OPND_Em:
5577 case AARCH64_OPND_SM3_IMM2:
5578 reg_type = REG_TYPE_VN;
5580 val = aarch64_reg_parse (&str, reg_type, NULL, &vectype);
5581 if (val == PARSE_FAIL)
5583 first_error (_(get_reg_expected_msg (reg_type)));
5586 if (vectype.type == NT_invtype || !(vectype.defined & NTA_HASINDEX))
5589 info->reglane.regno = val;
5590 info->reglane.index = vectype.index;
5591 info->qualifier = vectype_to_qualifier (&vectype);
5592 if (info->qualifier == AARCH64_OPND_QLF_NIL)
5596 case AARCH64_OPND_SVE_ZnxN:
5597 case AARCH64_OPND_SVE_ZtxN:
5598 reg_type = REG_TYPE_ZN;
5599 goto vector_reg_list;
5601 case AARCH64_OPND_LVn:
5602 case AARCH64_OPND_LVt:
5603 case AARCH64_OPND_LVt_AL:
5604 case AARCH64_OPND_LEt:
5605 reg_type = REG_TYPE_VN;
5607 if (reg_type == REG_TYPE_ZN
5608 && get_opcode_dependent_value (opcode) == 1
5611 val = aarch64_reg_parse (&str, reg_type, NULL, &vectype);
5612 if (val == PARSE_FAIL)
5614 first_error (_(get_reg_expected_msg (reg_type)));
5617 info->reglist.first_regno = val;
5618 info->reglist.num_regs = 1;
5622 val = parse_vector_reg_list (&str, reg_type, &vectype);
5623 if (val == PARSE_FAIL)
5625 if (! reg_list_valid_p (val, /* accept_alternate */ 0))
5627 set_fatal_syntax_error (_("invalid register list"));
5630 info->reglist.first_regno = (val >> 2) & 0x1f;
5631 info->reglist.num_regs = (val & 0x3) + 1;
5633 if (operands[i] == AARCH64_OPND_LEt)
5635 if (!(vectype.defined & NTA_HASINDEX))
5637 info->reglist.has_index = 1;
5638 info->reglist.index = vectype.index;
5642 if (vectype.defined & NTA_HASINDEX)
5644 if (!(vectype.defined & NTA_HASTYPE))
5646 if (reg_type == REG_TYPE_ZN)
5647 set_fatal_syntax_error (_("missing type suffix"));
5651 info->qualifier = vectype_to_qualifier (&vectype);
5652 if (info->qualifier == AARCH64_OPND_QLF_NIL)
5656 case AARCH64_OPND_CRn:
5657 case AARCH64_OPND_CRm:
5659 char prefix = *(str++);
5660 if (prefix != 'c' && prefix != 'C')
5663 po_imm_nc_or_fail ();
5666 set_fatal_syntax_error (_(N_ ("C0 - C15 expected")));
5669 info->qualifier = AARCH64_OPND_QLF_CR;
5670 info->imm.value = val;
5674 case AARCH64_OPND_SHLL_IMM:
5675 case AARCH64_OPND_IMM_VLSR:
5676 po_imm_or_fail (1, 64);
5677 info->imm.value = val;
5680 case AARCH64_OPND_CCMP_IMM:
5681 case AARCH64_OPND_SIMM5:
5682 case AARCH64_OPND_FBITS:
5683 case AARCH64_OPND_UIMM4:
5684 case AARCH64_OPND_UIMM3_OP1:
5685 case AARCH64_OPND_UIMM3_OP2:
5686 case AARCH64_OPND_IMM_VLSL:
5687 case AARCH64_OPND_IMM:
5688 case AARCH64_OPND_IMM_2:
5689 case AARCH64_OPND_WIDTH:
5690 case AARCH64_OPND_SVE_INV_LIMM:
5691 case AARCH64_OPND_SVE_LIMM:
5692 case AARCH64_OPND_SVE_LIMM_MOV:
5693 case AARCH64_OPND_SVE_SHLIMM_PRED:
5694 case AARCH64_OPND_SVE_SHLIMM_UNPRED:
5695 case AARCH64_OPND_SVE_SHRIMM_PRED:
5696 case AARCH64_OPND_SVE_SHRIMM_UNPRED:
5697 case AARCH64_OPND_SVE_SIMM5:
5698 case AARCH64_OPND_SVE_SIMM5B:
5699 case AARCH64_OPND_SVE_SIMM6:
5700 case AARCH64_OPND_SVE_SIMM8:
5701 case AARCH64_OPND_SVE_UIMM3:
5702 case AARCH64_OPND_SVE_UIMM7:
5703 case AARCH64_OPND_SVE_UIMM8:
5704 case AARCH64_OPND_SVE_UIMM8_53:
5705 case AARCH64_OPND_IMM_ROT1:
5706 case AARCH64_OPND_IMM_ROT2:
5707 case AARCH64_OPND_IMM_ROT3:
5708 case AARCH64_OPND_SVE_IMM_ROT1:
5709 case AARCH64_OPND_SVE_IMM_ROT2:
5710 po_imm_nc_or_fail ();
5711 info->imm.value = val;
5714 case AARCH64_OPND_SVE_AIMM:
5715 case AARCH64_OPND_SVE_ASIMM:
5716 po_imm_nc_or_fail ();
5717 info->imm.value = val;
5718 skip_whitespace (str);
5719 if (skip_past_comma (&str))
5720 po_misc_or_fail (parse_shift (&str, info, SHIFTED_LSL));
5722 inst.base.operands[i].shifter.kind = AARCH64_MOD_LSL;
5725 case AARCH64_OPND_SVE_PATTERN:
5726 po_enum_or_fail (aarch64_sve_pattern_array);
5727 info->imm.value = val;
5730 case AARCH64_OPND_SVE_PATTERN_SCALED:
5731 po_enum_or_fail (aarch64_sve_pattern_array);
5732 info->imm.value = val;
5733 if (skip_past_comma (&str)
5734 && !parse_shift (&str, info, SHIFTED_MUL))
5736 if (!info->shifter.operator_present)
5738 gas_assert (info->shifter.kind == AARCH64_MOD_NONE);
5739 info->shifter.kind = AARCH64_MOD_MUL;
5740 info->shifter.amount = 1;
5744 case AARCH64_OPND_SVE_PRFOP:
5745 po_enum_or_fail (aarch64_sve_prfop_array);
5746 info->imm.value = val;
5749 case AARCH64_OPND_UIMM7:
5750 po_imm_or_fail (0, 127);
5751 info->imm.value = val;
5754 case AARCH64_OPND_IDX:
5755 case AARCH64_OPND_MASK:
5756 case AARCH64_OPND_BIT_NUM:
5757 case AARCH64_OPND_IMMR:
5758 case AARCH64_OPND_IMMS:
5759 po_imm_or_fail (0, 63);
5760 info->imm.value = val;
5763 case AARCH64_OPND_IMM0:
5764 po_imm_nc_or_fail ();
5767 set_fatal_syntax_error (_("immediate zero expected"));
5770 info->imm.value = 0;
5773 case AARCH64_OPND_FPIMM0:
5776 bfd_boolean res1 = FALSE, res2 = FALSE;
5777 /* N.B. -0.0 will be rejected; although -0.0 shouldn't be rejected,
5778 it is probably not worth the effort to support it. */
5779 if (!(res1 = parse_aarch64_imm_float (&str, &qfloat, FALSE,
5782 || !(res2 = parse_constant_immediate (&str, &val,
5785 if ((res1 && qfloat == 0) || (res2 && val == 0))
5787 info->imm.value = 0;
5788 info->imm.is_fp = 1;
5791 set_fatal_syntax_error (_("immediate zero expected"));
5795 case AARCH64_OPND_IMM_MOV:
5798 if (reg_name_p (str, REG_TYPE_R_Z_SP) ||
5799 reg_name_p (str, REG_TYPE_VN))
5802 po_misc_or_fail (my_get_expression (&inst.reloc.exp, &str,
5804 /* The MOV immediate alias will be fixed up by fix_mov_imm_insn
5805 later. fix_mov_imm_insn will try to determine a machine
5806 instruction (MOVZ, MOVN or ORR) for it and will issue an error
5807 message if the immediate cannot be moved by a single
5809 aarch64_set_gas_internal_fixup (&inst.reloc, info, 1);
5810 inst.base.operands[i].skip = 1;
5814 case AARCH64_OPND_SIMD_IMM:
5815 case AARCH64_OPND_SIMD_IMM_SFT:
5816 if (! parse_big_immediate (&str, &val, imm_reg_type))
5818 assign_imm_if_const_or_fixup_later (&inst.reloc, info,
5820 /* need_libopcodes_p */ 1,
5823 N.B. although AARCH64_OPND_SIMD_IMM doesn't permit any
5824 shift, we don't check it here; we leave the checking to
5825 the libopcodes (operand_general_constraint_met_p). By
5826 doing this, we achieve better diagnostics. */
5827 if (skip_past_comma (&str)
5828 && ! parse_shift (&str, info, SHIFTED_LSL_MSL))
5830 if (!info->shifter.operator_present
5831 && info->type == AARCH64_OPND_SIMD_IMM_SFT)
5833 /* Default to LSL if not present. Libopcodes prefers shifter
5834 kind to be explicit. */
5835 gas_assert (info->shifter.kind == AARCH64_MOD_NONE);
5836 info->shifter.kind = AARCH64_MOD_LSL;
5840 case AARCH64_OPND_FPIMM:
5841 case AARCH64_OPND_SIMD_FPIMM:
5842 case AARCH64_OPND_SVE_FPIMM8:
5847 dp_p = double_precision_operand_p (&inst.base.operands[0]);
5848 if (!parse_aarch64_imm_float (&str, &qfloat, dp_p, imm_reg_type)
5849 || !aarch64_imm_float_p (qfloat))
5852 set_fatal_syntax_error (_("invalid floating-point"
5856 inst.base.operands[i].imm.value = encode_imm_float_bits (qfloat);
5857 inst.base.operands[i].imm.is_fp = 1;
5861 case AARCH64_OPND_SVE_I1_HALF_ONE:
5862 case AARCH64_OPND_SVE_I1_HALF_TWO:
5863 case AARCH64_OPND_SVE_I1_ZERO_ONE:
5868 dp_p = double_precision_operand_p (&inst.base.operands[0]);
5869 if (!parse_aarch64_imm_float (&str, &qfloat, dp_p, imm_reg_type))
5872 set_fatal_syntax_error (_("invalid floating-point"
5876 inst.base.operands[i].imm.value = qfloat;
5877 inst.base.operands[i].imm.is_fp = 1;
5881 case AARCH64_OPND_LIMM:
5882 po_misc_or_fail (parse_shifter_operand (&str, info,
5883 SHIFTED_LOGIC_IMM));
5884 if (info->shifter.operator_present)
5886 set_fatal_syntax_error
5887 (_("shift not allowed for bitmask immediate"));
5890 assign_imm_if_const_or_fixup_later (&inst.reloc, info,
5892 /* need_libopcodes_p */ 1,
5896 case AARCH64_OPND_AIMM:
5897 if (opcode->op == OP_ADD)
5898 /* ADD may have relocation types. */
5899 po_misc_or_fail (parse_shifter_operand_reloc (&str, info,
5900 SHIFTED_ARITH_IMM));
5902 po_misc_or_fail (parse_shifter_operand (&str, info,
5903 SHIFTED_ARITH_IMM));
5904 switch (inst.reloc.type)
5906 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
5907 info->shifter.amount = 12;
5909 case BFD_RELOC_UNUSED:
5910 aarch64_set_gas_internal_fixup (&inst.reloc, info, 0);
5911 if (info->shifter.kind != AARCH64_MOD_NONE)
5912 inst.reloc.flags = FIXUP_F_HAS_EXPLICIT_SHIFT;
5913 inst.reloc.pc_rel = 0;
5918 info->imm.value = 0;
5919 if (!info->shifter.operator_present)
5921 /* Default to LSL if not present. Libopcodes prefers shifter
5922 kind to be explicit. */
5923 gas_assert (info->shifter.kind == AARCH64_MOD_NONE);
5924 info->shifter.kind = AARCH64_MOD_LSL;
5928 case AARCH64_OPND_HALF:
5930 /* #<imm16> or relocation. */
5931 int internal_fixup_p;
5932 po_misc_or_fail (parse_half (&str, &internal_fixup_p));
5933 if (internal_fixup_p)
5934 aarch64_set_gas_internal_fixup (&inst.reloc, info, 0);
5935 skip_whitespace (str);
5936 if (skip_past_comma (&str))
5938 /* {, LSL #<shift>} */
5939 if (! aarch64_gas_internal_fixup_p ())
5941 set_fatal_syntax_error (_("can't mix relocation modifier "
5942 "with explicit shift"));
5945 po_misc_or_fail (parse_shift (&str, info, SHIFTED_LSL));
5948 inst.base.operands[i].shifter.amount = 0;
5949 inst.base.operands[i].shifter.kind = AARCH64_MOD_LSL;
5950 inst.base.operands[i].imm.value = 0;
5951 if (! process_movw_reloc_info ())
5956 case AARCH64_OPND_EXCEPTION:
5957 po_misc_or_fail (parse_immediate_expression (&str, &inst.reloc.exp,
5959 assign_imm_if_const_or_fixup_later (&inst.reloc, info,
5961 /* need_libopcodes_p */ 0,
5965 case AARCH64_OPND_NZCV:
5967 const asm_nzcv *nzcv = hash_find_n (aarch64_nzcv_hsh, str, 4);
5971 info->imm.value = nzcv->value;
5974 po_imm_or_fail (0, 15);
5975 info->imm.value = val;
5979 case AARCH64_OPND_COND:
5980 case AARCH64_OPND_COND1:
5985 while (ISALPHA (*str));
5986 info->cond = hash_find_n (aarch64_cond_hsh, start, str - start);
5987 if (info->cond == NULL)
5989 set_syntax_error (_("invalid condition"));
5992 else if (operands[i] == AARCH64_OPND_COND1
5993 && (info->cond->value & 0xe) == 0xe)
5995 /* Do not allow AL or NV. */
5996 set_default_error ();
6002 case AARCH64_OPND_ADDR_ADRP:
6003 po_misc_or_fail (parse_adrp (&str));
6004 /* Clear the value as operand needs to be relocated. */
6005 info->imm.value = 0;
6008 case AARCH64_OPND_ADDR_PCREL14:
6009 case AARCH64_OPND_ADDR_PCREL19:
6010 case AARCH64_OPND_ADDR_PCREL21:
6011 case AARCH64_OPND_ADDR_PCREL26:
6012 po_misc_or_fail (parse_address (&str, info));
6013 if (!info->addr.pcrel)
6015 set_syntax_error (_("invalid pc-relative address"));
6018 if (inst.gen_lit_pool
6019 && (opcode->iclass != loadlit || opcode->op == OP_PRFM_LIT))
6021 /* Only permit "=value" in the literal load instructions.
6022 The literal will be generated by programmer_friendly_fixup. */
6023 set_syntax_error (_("invalid use of \"=immediate\""));
6026 if (inst.reloc.exp.X_op == O_symbol && find_reloc_table_entry (&str))
6028 set_syntax_error (_("unrecognized relocation suffix"));
6031 if (inst.reloc.exp.X_op == O_constant && !inst.gen_lit_pool)
6033 info->imm.value = inst.reloc.exp.X_add_number;
6034 inst.reloc.type = BFD_RELOC_UNUSED;
6038 info->imm.value = 0;
6039 if (inst.reloc.type == BFD_RELOC_UNUSED)
6040 switch (opcode->iclass)
6044 /* e.g. CBZ or B.COND */
6045 gas_assert (operands[i] == AARCH64_OPND_ADDR_PCREL19);
6046 inst.reloc.type = BFD_RELOC_AARCH64_BRANCH19;
6050 gas_assert (operands[i] == AARCH64_OPND_ADDR_PCREL14);
6051 inst.reloc.type = BFD_RELOC_AARCH64_TSTBR14;
6055 gas_assert (operands[i] == AARCH64_OPND_ADDR_PCREL26);
6057 (opcode->op == OP_BL) ? BFD_RELOC_AARCH64_CALL26
6058 : BFD_RELOC_AARCH64_JUMP26;
6061 gas_assert (operands[i] == AARCH64_OPND_ADDR_PCREL19);
6062 inst.reloc.type = BFD_RELOC_AARCH64_LD_LO19_PCREL;
6065 gas_assert (operands[i] == AARCH64_OPND_ADDR_PCREL21);
6066 inst.reloc.type = BFD_RELOC_AARCH64_ADR_LO21_PCREL;
6072 inst.reloc.pc_rel = 1;
6076 case AARCH64_OPND_ADDR_SIMPLE:
6077 case AARCH64_OPND_SIMD_ADDR_SIMPLE:
6079 /* [<Xn|SP>{, #<simm>}] */
6081 /* First use the normal address-parsing routines, to get
6082 the usual syntax errors. */
6083 po_misc_or_fail (parse_address (&str, info));
6084 if (info->addr.pcrel || info->addr.offset.is_reg
6085 || !info->addr.preind || info->addr.postind
6086 || info->addr.writeback)
6088 set_syntax_error (_("invalid addressing mode"));
6092 /* Then retry, matching the specific syntax of these addresses. */
6094 po_char_or_fail ('[');
6095 po_reg_or_fail (REG_TYPE_R64_SP);
6096 /* Accept optional ", #0". */
6097 if (operands[i] == AARCH64_OPND_ADDR_SIMPLE
6098 && skip_past_char (&str, ','))
6100 skip_past_char (&str, '#');
6101 if (! skip_past_char (&str, '0'))
6103 set_fatal_syntax_error
6104 (_("the optional immediate offset can only be 0"));
6108 po_char_or_fail (']');
6112 case AARCH64_OPND_ADDR_REGOFF:
6113 /* [<Xn|SP>, <R><m>{, <extend> {<amount>}}] */
6114 po_misc_or_fail (parse_address (&str, info));
6116 if (info->addr.pcrel || !info->addr.offset.is_reg
6117 || !info->addr.preind || info->addr.postind
6118 || info->addr.writeback)
6120 set_syntax_error (_("invalid addressing mode"));
6123 if (!info->shifter.operator_present)
6125 /* Default to LSL if not present. Libopcodes prefers shifter
6126 kind to be explicit. */
6127 gas_assert (info->shifter.kind == AARCH64_MOD_NONE);
6128 info->shifter.kind = AARCH64_MOD_LSL;
6130 /* Qualifier to be deduced by libopcodes. */
6133 case AARCH64_OPND_ADDR_SIMM7:
6134 po_misc_or_fail (parse_address (&str, info));
6135 if (info->addr.pcrel || info->addr.offset.is_reg
6136 || (!info->addr.preind && !info->addr.postind))
6138 set_syntax_error (_("invalid addressing mode"));
6141 if (inst.reloc.type != BFD_RELOC_UNUSED)
6143 set_syntax_error (_("relocation not allowed"));
6146 assign_imm_if_const_or_fixup_later (&inst.reloc, info,
6148 /* need_libopcodes_p */ 1,
6152 case AARCH64_OPND_ADDR_SIMM9:
6153 case AARCH64_OPND_ADDR_SIMM9_2:
6154 po_misc_or_fail (parse_address (&str, info));
6155 if (info->addr.pcrel || info->addr.offset.is_reg
6156 || (!info->addr.preind && !info->addr.postind)
6157 || (operands[i] == AARCH64_OPND_ADDR_SIMM9_2
6158 && info->addr.writeback))
6160 set_syntax_error (_("invalid addressing mode"));
6163 if (inst.reloc.type != BFD_RELOC_UNUSED)
6165 set_syntax_error (_("relocation not allowed"));
6168 assign_imm_if_const_or_fixup_later (&inst.reloc, info,
6170 /* need_libopcodes_p */ 1,
6174 case AARCH64_OPND_ADDR_SIMM10:
6175 case AARCH64_OPND_ADDR_OFFSET:
6176 po_misc_or_fail (parse_address (&str, info));
6177 if (info->addr.pcrel || info->addr.offset.is_reg
6178 || !info->addr.preind || info->addr.postind)
6180 set_syntax_error (_("invalid addressing mode"));
6183 if (inst.reloc.type != BFD_RELOC_UNUSED)
6185 set_syntax_error (_("relocation not allowed"));
6188 assign_imm_if_const_or_fixup_later (&inst.reloc, info,
6190 /* need_libopcodes_p */ 1,
6194 case AARCH64_OPND_ADDR_UIMM12:
6195 po_misc_or_fail (parse_address (&str, info));
6196 if (info->addr.pcrel || info->addr.offset.is_reg
6197 || !info->addr.preind || info->addr.writeback)
6199 set_syntax_error (_("invalid addressing mode"));
6202 if (inst.reloc.type == BFD_RELOC_UNUSED)
6203 aarch64_set_gas_internal_fixup (&inst.reloc, info, 1);
6204 else if (inst.reloc.type == BFD_RELOC_AARCH64_LDST_LO12
6206 == BFD_RELOC_AARCH64_TLSLD_LDST_DTPREL_LO12)
6208 == BFD_RELOC_AARCH64_TLSLD_LDST_DTPREL_LO12_NC)
6210 == BFD_RELOC_AARCH64_TLSLE_LDST_TPREL_LO12)
6212 == BFD_RELOC_AARCH64_TLSLE_LDST_TPREL_LO12_NC))
6213 inst.reloc.type = ldst_lo12_determine_real_reloc_type ();
6214 /* Leave qualifier to be determined by libopcodes. */
6217 case AARCH64_OPND_SIMD_ADDR_POST:
6218 /* [<Xn|SP>], <Xm|#<amount>> */
6219 po_misc_or_fail (parse_address (&str, info));
6220 if (!info->addr.postind || !info->addr.writeback)
6222 set_syntax_error (_("invalid addressing mode"));
6225 if (!info->addr.offset.is_reg)
6227 if (inst.reloc.exp.X_op == O_constant)
6228 info->addr.offset.imm = inst.reloc.exp.X_add_number;
6231 set_fatal_syntax_error
6232 (_("writeback value must be an immediate constant"));
6239 case AARCH64_OPND_SVE_ADDR_RI_S4x16:
6240 case AARCH64_OPND_SVE_ADDR_RI_S4xVL:
6241 case AARCH64_OPND_SVE_ADDR_RI_S4x2xVL:
6242 case AARCH64_OPND_SVE_ADDR_RI_S4x3xVL:
6243 case AARCH64_OPND_SVE_ADDR_RI_S4x4xVL:
6244 case AARCH64_OPND_SVE_ADDR_RI_S6xVL:
6245 case AARCH64_OPND_SVE_ADDR_RI_S9xVL:
6246 case AARCH64_OPND_SVE_ADDR_RI_U6:
6247 case AARCH64_OPND_SVE_ADDR_RI_U6x2:
6248 case AARCH64_OPND_SVE_ADDR_RI_U6x4:
6249 case AARCH64_OPND_SVE_ADDR_RI_U6x8:
6250 /* [X<n>{, #imm, MUL VL}]
6252 but recognizing SVE registers. */
6253 po_misc_or_fail (parse_sve_address (&str, info, &base_qualifier,
6254 &offset_qualifier));
6255 if (base_qualifier != AARCH64_OPND_QLF_X)
6257 set_syntax_error (_("invalid addressing mode"));
6261 if (info->addr.pcrel || info->addr.offset.is_reg
6262 || !info->addr.preind || info->addr.writeback)
6264 set_syntax_error (_("invalid addressing mode"));
6267 if (inst.reloc.type != BFD_RELOC_UNUSED
6268 || inst.reloc.exp.X_op != O_constant)
6270 /* Make sure this has priority over
6271 "invalid addressing mode". */
6272 set_fatal_syntax_error (_("constant offset required"));
6275 info->addr.offset.imm = inst.reloc.exp.X_add_number;
6278 case AARCH64_OPND_SVE_ADDR_R:
6279 /* [<Xn|SP>{, <R><m>}]
6280 but recognizing SVE registers. */
6281 po_misc_or_fail (parse_sve_address (&str, info, &base_qualifier,
6282 &offset_qualifier));
6283 if (offset_qualifier == AARCH64_OPND_QLF_NIL)
6285 offset_qualifier = AARCH64_OPND_QLF_X;
6286 info->addr.offset.is_reg = 1;
6287 info->addr.offset.regno = 31;
6289 else if (base_qualifier != AARCH64_OPND_QLF_X
6290 || offset_qualifier != AARCH64_OPND_QLF_X)
6292 set_syntax_error (_("invalid addressing mode"));
6297 case AARCH64_OPND_SVE_ADDR_RR:
6298 case AARCH64_OPND_SVE_ADDR_RR_LSL1:
6299 case AARCH64_OPND_SVE_ADDR_RR_LSL2:
6300 case AARCH64_OPND_SVE_ADDR_RR_LSL3:
6301 case AARCH64_OPND_SVE_ADDR_RX:
6302 case AARCH64_OPND_SVE_ADDR_RX_LSL1:
6303 case AARCH64_OPND_SVE_ADDR_RX_LSL2:
6304 case AARCH64_OPND_SVE_ADDR_RX_LSL3:
6305 /* [<Xn|SP>, <R><m>{, lsl #<amount>}]
6306 but recognizing SVE registers. */
6307 po_misc_or_fail (parse_sve_address (&str, info, &base_qualifier,
6308 &offset_qualifier));
6309 if (base_qualifier != AARCH64_OPND_QLF_X
6310 || offset_qualifier != AARCH64_OPND_QLF_X)
6312 set_syntax_error (_("invalid addressing mode"));
6317 case AARCH64_OPND_SVE_ADDR_RZ:
6318 case AARCH64_OPND_SVE_ADDR_RZ_LSL1:
6319 case AARCH64_OPND_SVE_ADDR_RZ_LSL2:
6320 case AARCH64_OPND_SVE_ADDR_RZ_LSL3:
6321 case AARCH64_OPND_SVE_ADDR_RZ_XTW_14:
6322 case AARCH64_OPND_SVE_ADDR_RZ_XTW_22:
6323 case AARCH64_OPND_SVE_ADDR_RZ_XTW1_14:
6324 case AARCH64_OPND_SVE_ADDR_RZ_XTW1_22:
6325 case AARCH64_OPND_SVE_ADDR_RZ_XTW2_14:
6326 case AARCH64_OPND_SVE_ADDR_RZ_XTW2_22:
6327 case AARCH64_OPND_SVE_ADDR_RZ_XTW3_14:
6328 case AARCH64_OPND_SVE_ADDR_RZ_XTW3_22:
6329 /* [<Xn|SP>, Z<m>.D{, LSL #<amount>}]
6330 [<Xn|SP>, Z<m>.<T>, <extend> {#<amount>}] */
6331 po_misc_or_fail (parse_sve_address (&str, info, &base_qualifier,
6332 &offset_qualifier));
6333 if (base_qualifier != AARCH64_OPND_QLF_X
6334 || (offset_qualifier != AARCH64_OPND_QLF_S_S
6335 && offset_qualifier != AARCH64_OPND_QLF_S_D))
6337 set_syntax_error (_("invalid addressing mode"));
6340 info->qualifier = offset_qualifier;
6343 case AARCH64_OPND_SVE_ADDR_ZI_U5:
6344 case AARCH64_OPND_SVE_ADDR_ZI_U5x2:
6345 case AARCH64_OPND_SVE_ADDR_ZI_U5x4:
6346 case AARCH64_OPND_SVE_ADDR_ZI_U5x8:
6347 /* [Z<n>.<T>{, #imm}] */
6348 po_misc_or_fail (parse_sve_address (&str, info, &base_qualifier,
6349 &offset_qualifier));
6350 if (base_qualifier != AARCH64_OPND_QLF_S_S
6351 && base_qualifier != AARCH64_OPND_QLF_S_D)
6353 set_syntax_error (_("invalid addressing mode"));
6356 info->qualifier = base_qualifier;
6359 case AARCH64_OPND_SVE_ADDR_ZZ_LSL:
6360 case AARCH64_OPND_SVE_ADDR_ZZ_SXTW:
6361 case AARCH64_OPND_SVE_ADDR_ZZ_UXTW:
6362 /* [Z<n>.<T>, Z<m>.<T>{, LSL #<amount>}]
6363 [Z<n>.D, Z<m>.D, <extend> {#<amount>}]
6367 [Z<n>.S, Z<m>.S, <extend> {#<amount>}]
6369 here since we get better error messages by leaving it to
6370 the qualifier checking routines. */
6371 po_misc_or_fail (parse_sve_address (&str, info, &base_qualifier,
6372 &offset_qualifier));
6373 if ((base_qualifier != AARCH64_OPND_QLF_S_S
6374 && base_qualifier != AARCH64_OPND_QLF_S_D)
6375 || offset_qualifier != base_qualifier)
6377 set_syntax_error (_("invalid addressing mode"));
6380 info->qualifier = base_qualifier;
6383 case AARCH64_OPND_SYSREG:
6385 uint32_t sysreg_flags;
6386 if ((val = parse_sys_reg (&str, aarch64_sys_regs_hsh, 1, 0,
6387 &sysreg_flags)) == PARSE_FAIL)
6389 set_syntax_error (_("unknown or missing system register name"));
6392 inst.base.operands[i].sysreg.value = val;
6393 inst.base.operands[i].sysreg.flags = sysreg_flags;
6397 case AARCH64_OPND_PSTATEFIELD:
6398 if ((val = parse_sys_reg (&str, aarch64_pstatefield_hsh, 0, 1, NULL))
6401 set_syntax_error (_("unknown or missing PSTATE field name"));
6404 inst.base.operands[i].pstatefield = val;
6407 case AARCH64_OPND_SYSREG_IC:
6408 inst.base.operands[i].sysins_op =
6409 parse_sys_ins_reg (&str, aarch64_sys_regs_ic_hsh);
6411 case AARCH64_OPND_SYSREG_DC:
6412 inst.base.operands[i].sysins_op =
6413 parse_sys_ins_reg (&str, aarch64_sys_regs_dc_hsh);
6415 case AARCH64_OPND_SYSREG_AT:
6416 inst.base.operands[i].sysins_op =
6417 parse_sys_ins_reg (&str, aarch64_sys_regs_at_hsh);
6419 case AARCH64_OPND_SYSREG_TLBI:
6420 inst.base.operands[i].sysins_op =
6421 parse_sys_ins_reg (&str, aarch64_sys_regs_tlbi_hsh);
6423 if (inst.base.operands[i].sysins_op == NULL)
6425 set_fatal_syntax_error ( _("unknown or missing operation name"));
6430 case AARCH64_OPND_BARRIER:
6431 case AARCH64_OPND_BARRIER_ISB:
6432 val = parse_barrier (&str);
6433 if (val != PARSE_FAIL
6434 && operands[i] == AARCH64_OPND_BARRIER_ISB && val != 0xf)
6436 /* ISB only accepts options name 'sy'. */
6438 (_("the specified option is not accepted in ISB"));
6439 /* Turn off backtrack as this optional operand is present. */
6443 /* This is an extension to accept a 0..15 immediate. */
6444 if (val == PARSE_FAIL)
6445 po_imm_or_fail (0, 15);
6446 info->barrier = aarch64_barrier_options + val;
6449 case AARCH64_OPND_PRFOP:
6450 val = parse_pldop (&str);
6451 /* This is an extension to accept a 0..31 immediate. */
6452 if (val == PARSE_FAIL)
6453 po_imm_or_fail (0, 31);
6454 inst.base.operands[i].prfop = aarch64_prfops + val;
6457 case AARCH64_OPND_BARRIER_PSB:
6458 val = parse_barrier_psb (&str, &(info->hint_option));
6459 if (val == PARSE_FAIL)
6464 as_fatal (_("unhandled operand code %d"), operands[i]);
6467 /* If we get here, this operand was successfully parsed. */
6468 inst.base.operands[i].present = 1;
6472 /* The parse routine should already have set the error, but in case
6473 not, set a default one here. */
6475 set_default_error ();
6477 if (! backtrack_pos)
6478 goto parse_operands_return;
6481 /* We reach here because this operand is marked as optional, and
6482 either no operand was supplied or the operand was supplied but it
6483 was syntactically incorrect. In the latter case we report an
6484 error. In the former case we perform a few more checks before
6485 dropping through to the code to insert the default operand. */
6487 char *tmp = backtrack_pos;
6488 char endchar = END_OF_INSN;
6490 if (i != (aarch64_num_of_operands (opcode) - 1))
6492 skip_past_char (&tmp, ',');
6494 if (*tmp != endchar)
6495 /* The user has supplied an operand in the wrong format. */
6496 goto parse_operands_return;
6498 /* Make sure there is not a comma before the optional operand.
6499 For example the fifth operand of 'sys' is optional:
6501 sys #0,c0,c0,#0, <--- wrong
6502 sys #0,c0,c0,#0 <--- correct. */
6503 if (comma_skipped_p && i && endchar == END_OF_INSN)
6505 set_fatal_syntax_error
6506 (_("unexpected comma before the omitted optional operand"));
6507 goto parse_operands_return;
6511 /* Reaching here means we are dealing with an optional operand that is
6512 omitted from the assembly line. */
6513 gas_assert (optional_operand_p (opcode, i));
6515 process_omitted_operand (operands[i], opcode, i, info);
6517 /* Try again, skipping the optional operand at backtrack_pos. */
6518 str = backtrack_pos;
6521 /* Clear any error record after the omitted optional operand has been
6522 successfully handled. */
6526 /* Check if we have parsed all the operands. */
6527 if (*str != '\0' && ! error_p ())
6529 /* Set I to the index of the last present operand; this is
6530 for the purpose of diagnostics. */
6531 for (i -= 1; i >= 0 && !inst.base.operands[i].present; --i)
6533 set_fatal_syntax_error
6534 (_("unexpected characters following instruction"));
6537 parse_operands_return:
6541 DEBUG_TRACE ("parsing FAIL: %s - %s",
6542 operand_mismatch_kind_names[get_error_kind ()],
6543 get_error_message ());
6544 /* Record the operand error properly; this is useful when there
6545 are multiple instruction templates for a mnemonic name, so that
6546 later on, we can select the error that most closely describes
6548 record_operand_error (opcode, i, get_error_kind (),
6549 get_error_message ());
6554 DEBUG_TRACE ("parsing SUCCESS");
6559 /* It does some fix-up to provide some programmer friendly feature while
6560 keeping the libopcodes happy, i.e. libopcodes only accepts
6561 the preferred architectural syntax.
6562 Return FALSE if there is any failure; otherwise return TRUE. */
6565 programmer_friendly_fixup (aarch64_instruction *instr)
6567 aarch64_inst *base = &instr->base;
6568 const aarch64_opcode *opcode = base->opcode;
6569 enum aarch64_op op = opcode->op;
6570 aarch64_opnd_info *operands = base->operands;
6572 DEBUG_TRACE ("enter");
6574 switch (opcode->iclass)
6577 /* TBNZ Xn|Wn, #uimm6, label
6578 Test and Branch Not Zero: conditionally jumps to label if bit number
6579 uimm6 in register Xn is not zero. The bit number implies the width of
6580 the register, which may be written and should be disassembled as Wn if
6581 uimm is less than 32. */
6582 if (operands[0].qualifier == AARCH64_OPND_QLF_W)
6584 if (operands[1].imm.value >= 32)
6586 record_operand_out_of_range_error (opcode, 1, _("immediate value"),
6590 operands[0].qualifier = AARCH64_OPND_QLF_X;
6594 /* LDR Wt, label | =value
6595 As a convenience assemblers will typically permit the notation
6596 "=value" in conjunction with the pc-relative literal load instructions
6597 to automatically place an immediate value or symbolic address in a
6598 nearby literal pool and generate a hidden label which references it.
6599 ISREG has been set to 0 in the case of =value. */
6600 if (instr->gen_lit_pool
6601 && (op == OP_LDR_LIT || op == OP_LDRV_LIT || op == OP_LDRSW_LIT))
6603 int size = aarch64_get_qualifier_esize (operands[0].qualifier);
6604 if (op == OP_LDRSW_LIT)
6606 if (instr->reloc.exp.X_op != O_constant
6607 && instr->reloc.exp.X_op != O_big
6608 && instr->reloc.exp.X_op != O_symbol)
6610 record_operand_error (opcode, 1,
6611 AARCH64_OPDE_FATAL_SYNTAX_ERROR,
6612 _("constant expression expected"));
6615 if (! add_to_lit_pool (&instr->reloc.exp, size))
6617 record_operand_error (opcode, 1,
6618 AARCH64_OPDE_OTHER_ERROR,
6619 _("literal pool insertion failed"));
6627 Unsigned Extend Byte|Halfword|Word: UXT[BH] is architectural alias
6628 for UBFM Wd,Wn,#0,#7|15, while UXTW is pseudo instruction which is
6629 encoded using ORR Wd, WZR, Wn (MOV Wd,Wn).
6630 A programmer-friendly assembler should accept a destination Xd in
6631 place of Wd, however that is not the preferred form for disassembly.
6633 if ((op == OP_UXTB || op == OP_UXTH || op == OP_UXTW)
6634 && operands[1].qualifier == AARCH64_OPND_QLF_W
6635 && operands[0].qualifier == AARCH64_OPND_QLF_X)
6636 operands[0].qualifier = AARCH64_OPND_QLF_W;
6641 /* In the 64-bit form, the final register operand is written as Wm
6642 for all but the (possibly omitted) UXTX/LSL and SXTX
6644 As a programmer-friendly assembler, we accept e.g.
6645 ADDS <Xd>, <Xn|SP>, <Xm>{, UXTB {#<amount>}} and change it to
6646 ADDS <Xd>, <Xn|SP>, <Wm>{, UXTB {#<amount>}}. */
6647 int idx = aarch64_operand_index (opcode->operands,
6648 AARCH64_OPND_Rm_EXT);
6649 gas_assert (idx == 1 || idx == 2);
6650 if (operands[0].qualifier == AARCH64_OPND_QLF_X
6651 && operands[idx].qualifier == AARCH64_OPND_QLF_X
6652 && operands[idx].shifter.kind != AARCH64_MOD_LSL
6653 && operands[idx].shifter.kind != AARCH64_MOD_UXTX
6654 && operands[idx].shifter.kind != AARCH64_MOD_SXTX)
6655 operands[idx].qualifier = AARCH64_OPND_QLF_W;
6663 DEBUG_TRACE ("exit with SUCCESS");
6667 /* Check for loads and stores that will cause unpredictable behavior. */
6670 warn_unpredictable_ldst (aarch64_instruction *instr, char *str)
6672 aarch64_inst *base = &instr->base;
6673 const aarch64_opcode *opcode = base->opcode;
6674 const aarch64_opnd_info *opnds = base->operands;
6675 switch (opcode->iclass)
6682 /* Loading/storing the base register is unpredictable if writeback. */
6683 if ((aarch64_get_operand_class (opnds[0].type)
6684 == AARCH64_OPND_CLASS_INT_REG)
6685 && opnds[0].reg.regno == opnds[1].addr.base_regno
6686 && opnds[1].addr.base_regno != REG_SP
6687 && opnds[1].addr.writeback)
6688 as_warn (_("unpredictable transfer with writeback -- `%s'"), str);
6691 case ldstnapair_offs:
6692 case ldstpair_indexed:
6693 /* Loading/storing the base register is unpredictable if writeback. */
6694 if ((aarch64_get_operand_class (opnds[0].type)
6695 == AARCH64_OPND_CLASS_INT_REG)
6696 && (opnds[0].reg.regno == opnds[2].addr.base_regno
6697 || opnds[1].reg.regno == opnds[2].addr.base_regno)
6698 && opnds[2].addr.base_regno != REG_SP
6699 && opnds[2].addr.writeback)
6700 as_warn (_("unpredictable transfer with writeback -- `%s'"), str);
6701 /* Load operations must load different registers. */
6702 if ((opcode->opcode & (1 << 22))
6703 && opnds[0].reg.regno == opnds[1].reg.regno)
6704 as_warn (_("unpredictable load of register pair -- `%s'"), str);
6711 /* A wrapper function to interface with libopcodes on encoding and
6712 record the error message if there is any.
6714 Return TRUE on success; otherwise return FALSE. */
6717 do_encode (const aarch64_opcode *opcode, aarch64_inst *instr,
6720 aarch64_operand_error error_info;
6721 memset (&error_info, '\0', sizeof (error_info));
6722 error_info.kind = AARCH64_OPDE_NIL;
6723 if (aarch64_opcode_encode (opcode, instr, code, NULL, &error_info)
6724 && !error_info.non_fatal)
6727 gas_assert (error_info.kind != AARCH64_OPDE_NIL);
6728 record_operand_error_info (opcode, &error_info);
6729 return error_info.non_fatal;
6732 #ifdef DEBUG_AARCH64
6734 dump_opcode_operands (const aarch64_opcode *opcode)
6737 while (opcode->operands[i] != AARCH64_OPND_NIL)
6739 aarch64_verbose ("\t\t opnd%d: %s", i,
6740 aarch64_get_operand_name (opcode->operands[i])[0] != '\0'
6741 ? aarch64_get_operand_name (opcode->operands[i])
6742 : aarch64_get_operand_desc (opcode->operands[i]));
6746 #endif /* DEBUG_AARCH64 */
6748 /* This is the guts of the machine-dependent assembler. STR points to a
6749 machine dependent instruction. This function is supposed to emit
6750 the frags/bytes it assembles to. */
6753 md_assemble (char *str)
6756 templates *template;
6757 aarch64_opcode *opcode;
6758 aarch64_inst *inst_base;
6759 unsigned saved_cond;
6761 /* Align the previous label if needed. */
6762 if (last_label_seen != NULL)
6764 symbol_set_frag (last_label_seen, frag_now);
6765 S_SET_VALUE (last_label_seen, (valueT) frag_now_fix ());
6766 S_SET_SEGMENT (last_label_seen, now_seg);
6769 inst.reloc.type = BFD_RELOC_UNUSED;
6771 DEBUG_TRACE ("\n\n");
6772 DEBUG_TRACE ("==============================");
6773 DEBUG_TRACE ("Enter md_assemble with %s", str);
6775 template = opcode_lookup (&p);
6778 /* It wasn't an instruction, but it might be a register alias of
6779 the form alias .req reg directive. */
6780 if (!create_register_alias (str, p))
6781 as_bad (_("unknown mnemonic `%s' -- `%s'"), get_mnemonic_name (str),
6786 skip_whitespace (p);
6789 as_bad (_("unexpected comma after the mnemonic name `%s' -- `%s'"),
6790 get_mnemonic_name (str), str);
6794 init_operand_error_report ();
6796 /* Sections are assumed to start aligned. In executable section, there is no
6797 MAP_DATA symbol pending. So we only align the address during
6798 MAP_DATA --> MAP_INSN transition.
6799 For other sections, this is not guaranteed. */
6800 enum mstate mapstate = seg_info (now_seg)->tc_segment_info_data.mapstate;
6801 if (!need_pass_2 && subseg_text_p (now_seg) && mapstate == MAP_DATA)
6802 frag_align_code (2, 0);
6804 saved_cond = inst.cond;
6805 reset_aarch64_instruction (&inst);
6806 inst.cond = saved_cond;
6808 /* Iterate through all opcode entries with the same mnemonic name. */
6811 opcode = template->opcode;
6813 DEBUG_TRACE ("opcode %s found", opcode->name);
6814 #ifdef DEBUG_AARCH64
6816 dump_opcode_operands (opcode);
6817 #endif /* DEBUG_AARCH64 */
6819 mapping_state (MAP_INSN);
6821 inst_base = &inst.base;
6822 inst_base->opcode = opcode;
6824 /* Truly conditionally executed instructions, e.g. b.cond. */
6825 if (opcode->flags & F_COND)
6827 gas_assert (inst.cond != COND_ALWAYS);
6828 inst_base->cond = get_cond_from_value (inst.cond);
6829 DEBUG_TRACE ("condition found %s", inst_base->cond->names[0]);
6831 else if (inst.cond != COND_ALWAYS)
6833 /* It shouldn't arrive here, where the assembly looks like a
6834 conditional instruction but the found opcode is unconditional. */
6839 if (parse_operands (p, opcode)
6840 && programmer_friendly_fixup (&inst)
6841 && do_encode (inst_base->opcode, &inst.base, &inst_base->value))
6843 /* Check that this instruction is supported for this CPU. */
6844 if (!opcode->avariant
6845 || !AARCH64_CPU_HAS_ALL_FEATURES (cpu_variant, *opcode->avariant))
6847 as_bad (_("selected processor does not support `%s'"), str);
6851 warn_unpredictable_ldst (&inst, str);
6853 if (inst.reloc.type == BFD_RELOC_UNUSED
6854 || !inst.reloc.need_libopcodes_p)
6858 /* If there is relocation generated for the instruction,
6859 store the instruction information for the future fix-up. */
6860 struct aarch64_inst *copy;
6861 gas_assert (inst.reloc.type != BFD_RELOC_UNUSED);
6862 copy = XNEW (struct aarch64_inst);
6863 memcpy (copy, &inst.base, sizeof (struct aarch64_inst));
6867 /* Issue non-fatal messages if any. */
6868 output_operand_error_report (str, TRUE);
6872 template = template->next;
6873 if (template != NULL)
6875 reset_aarch64_instruction (&inst);
6876 inst.cond = saved_cond;
6879 while (template != NULL);
6881 /* Issue the error messages if any. */
6882 output_operand_error_report (str, FALSE);
6885 /* Various frobbings of labels and their addresses. */
6888 aarch64_start_line_hook (void)
6890 last_label_seen = NULL;
6894 aarch64_frob_label (symbolS * sym)
6896 last_label_seen = sym;
6898 dwarf2_emit_label (sym);
6902 aarch64_data_in_code (void)
6904 if (!strncmp (input_line_pointer + 1, "data:", 5))
6906 *input_line_pointer = '/';
6907 input_line_pointer += 5;
6908 *input_line_pointer = 0;
6916 aarch64_canonicalize_symbol_name (char *name)
6920 if ((len = strlen (name)) > 5 && streq (name + len - 5, "/data"))
6921 *(name + len - 5) = 0;
6926 /* Table of all register names defined by default. The user can
6927 define additional names with .req. Note that all register names
6928 should appear in both upper and lowercase variants. Some registers
6929 also have mixed-case names. */
6931 #define REGDEF(s,n,t) { #s, n, REG_TYPE_##t, TRUE }
6932 #define REGDEF_ALIAS(s, n, t) { #s, n, REG_TYPE_##t, FALSE}
6933 #define REGNUM(p,n,t) REGDEF(p##n, n, t)
6934 #define REGSET16(p,t) \
6935 REGNUM(p, 0,t), REGNUM(p, 1,t), REGNUM(p, 2,t), REGNUM(p, 3,t), \
6936 REGNUM(p, 4,t), REGNUM(p, 5,t), REGNUM(p, 6,t), REGNUM(p, 7,t), \
6937 REGNUM(p, 8,t), REGNUM(p, 9,t), REGNUM(p,10,t), REGNUM(p,11,t), \
6938 REGNUM(p,12,t), REGNUM(p,13,t), REGNUM(p,14,t), REGNUM(p,15,t)
6939 #define REGSET31(p,t) \
6941 REGNUM(p,16,t), REGNUM(p,17,t), REGNUM(p,18,t), REGNUM(p,19,t), \
6942 REGNUM(p,20,t), REGNUM(p,21,t), REGNUM(p,22,t), REGNUM(p,23,t), \
6943 REGNUM(p,24,t), REGNUM(p,25,t), REGNUM(p,26,t), REGNUM(p,27,t), \
6944 REGNUM(p,28,t), REGNUM(p,29,t), REGNUM(p,30,t)
6945 #define REGSET(p,t) \
6946 REGSET31(p,t), REGNUM(p,31,t)
6948 /* These go into aarch64_reg_hsh hash-table. */
6949 static const reg_entry reg_names[] = {
6950 /* Integer registers. */
6951 REGSET31 (x, R_64), REGSET31 (X, R_64),
6952 REGSET31 (w, R_32), REGSET31 (W, R_32),
6954 REGDEF_ALIAS (ip0, 16, R_64), REGDEF_ALIAS (IP0, 16, R_64),
6955 REGDEF_ALIAS (ip1, 17, R_64), REGDEF_ALIAS (IP1, 17, R_64),
6956 REGDEF_ALIAS (fp, 29, R_64), REGDEF_ALIAS (FP, 29, R_64),
6957 REGDEF_ALIAS (lr, 30, R_64), REGDEF_ALIAS (LR, 30, R_64),
6958 REGDEF (wsp, 31, SP_32), REGDEF (WSP, 31, SP_32),
6959 REGDEF (sp, 31, SP_64), REGDEF (SP, 31, SP_64),
6961 REGDEF (wzr, 31, Z_32), REGDEF (WZR, 31, Z_32),
6962 REGDEF (xzr, 31, Z_64), REGDEF (XZR, 31, Z_64),
6964 /* Floating-point single precision registers. */
6965 REGSET (s, FP_S), REGSET (S, FP_S),
6967 /* Floating-point double precision registers. */
6968 REGSET (d, FP_D), REGSET (D, FP_D),
6970 /* Floating-point half precision registers. */
6971 REGSET (h, FP_H), REGSET (H, FP_H),
6973 /* Floating-point byte precision registers. */
6974 REGSET (b, FP_B), REGSET (B, FP_B),
6976 /* Floating-point quad precision registers. */
6977 REGSET (q, FP_Q), REGSET (Q, FP_Q),
6979 /* FP/SIMD registers. */
6980 REGSET (v, VN), REGSET (V, VN),
6982 /* SVE vector registers. */
6983 REGSET (z, ZN), REGSET (Z, ZN),
6985 /* SVE predicate registers. */
6986 REGSET16 (p, PN), REGSET16 (P, PN)
7004 #define B(a,b,c,d) (((a) << 3) | ((b) << 2) | ((c) << 1) | (d))
7005 static const asm_nzcv nzcv_names[] = {
7006 {"nzcv", B (n, z, c, v)},
7007 {"nzcV", B (n, z, c, V)},
7008 {"nzCv", B (n, z, C, v)},
7009 {"nzCV", B (n, z, C, V)},
7010 {"nZcv", B (n, Z, c, v)},
7011 {"nZcV", B (n, Z, c, V)},
7012 {"nZCv", B (n, Z, C, v)},
7013 {"nZCV", B (n, Z, C, V)},
7014 {"Nzcv", B (N, z, c, v)},
7015 {"NzcV", B (N, z, c, V)},
7016 {"NzCv", B (N, z, C, v)},
7017 {"NzCV", B (N, z, C, V)},
7018 {"NZcv", B (N, Z, c, v)},
7019 {"NZcV", B (N, Z, c, V)},
7020 {"NZCv", B (N, Z, C, v)},
7021 {"NZCV", B (N, Z, C, V)}
7034 /* MD interface: bits in the object file. */
7036 /* Turn an integer of n bytes (in val) into a stream of bytes appropriate
7037 for use in the a.out file, and stores them in the array pointed to by buf.
7038 This knows about the endian-ness of the target machine and does
7039 THE RIGHT THING, whatever it is. Possible values for n are 1 (byte)
7040 2 (short) and 4 (long) Floating numbers are put out as a series of
7041 LITTLENUMS (shorts, here at least). */
7044 md_number_to_chars (char *buf, valueT val, int n)
7046 if (target_big_endian)
7047 number_to_chars_bigendian (buf, val, n);
7049 number_to_chars_littleendian (buf, val, n);
7052 /* MD interface: Sections. */
7054 /* Estimate the size of a frag before relaxing. Assume everything fits in
7058 md_estimate_size_before_relax (fragS * fragp, segT segtype ATTRIBUTE_UNUSED)
7064 /* Round up a section size to the appropriate boundary. */
7067 md_section_align (segT segment ATTRIBUTE_UNUSED, valueT size)
7072 /* This is called from HANDLE_ALIGN in write.c. Fill in the contents
7073 of an rs_align_code fragment.
7075 Here we fill the frag with the appropriate info for padding the
7076 output stream. The resulting frag will consist of a fixed (fr_fix)
7077 and of a repeating (fr_var) part.
7079 The fixed content is always emitted before the repeating content and
7080 these two parts are used as follows in constructing the output:
7081 - the fixed part will be used to align to a valid instruction word
7082 boundary, in case that we start at a misaligned address; as no
7083 executable instruction can live at the misaligned location, we
7084 simply fill with zeros;
7085 - the variable part will be used to cover the remaining padding and
7086 we fill using the AArch64 NOP instruction.
7088 Note that the size of a RS_ALIGN_CODE fragment is always 7 to provide
7089 enough storage space for up to 3 bytes for padding the back to a valid
7090 instruction alignment and exactly 4 bytes to store the NOP pattern. */
7093 aarch64_handle_align (fragS * fragP)
7095 /* NOP = d503201f */
7096 /* AArch64 instructions are always little-endian. */
7097 static unsigned char const aarch64_noop[4] = { 0x1f, 0x20, 0x03, 0xd5 };
7099 int bytes, fix, noop_size;
7102 if (fragP->fr_type != rs_align_code)
7105 bytes = fragP->fr_next->fr_address - fragP->fr_address - fragP->fr_fix;
7106 p = fragP->fr_literal + fragP->fr_fix;
7109 gas_assert (fragP->tc_frag_data.recorded);
7112 noop_size = sizeof (aarch64_noop);
7114 fix = bytes & (noop_size - 1);
7118 insert_data_mapping_symbol (MAP_INSN, fragP->fr_fix, fragP, fix);
7122 fragP->fr_fix += fix;
7126 memcpy (p, aarch64_noop, noop_size);
7127 fragP->fr_var = noop_size;
7130 /* Perform target specific initialisation of a frag.
7131 Note - despite the name this initialisation is not done when the frag
7132 is created, but only when its type is assigned. A frag can be created
7133 and used a long time before its type is set, so beware of assuming that
7134 this initialisation is performed first. */
7138 aarch64_init_frag (fragS * fragP ATTRIBUTE_UNUSED,
7139 int max_chars ATTRIBUTE_UNUSED)
7143 #else /* OBJ_ELF is defined. */
7145 aarch64_init_frag (fragS * fragP, int max_chars)
7147 /* Record a mapping symbol for alignment frags. We will delete this
7148 later if the alignment ends up empty. */
7149 if (!fragP->tc_frag_data.recorded)
7150 fragP->tc_frag_data.recorded = 1;
7152 /* PR 21809: Do not set a mapping state for debug sections
7153 - it just confuses other tools. */
7154 if (bfd_get_section_flags (NULL, now_seg) & SEC_DEBUGGING)
7157 switch (fragP->fr_type)
7161 mapping_state_2 (MAP_DATA, max_chars);
7164 /* PR 20364: We can get alignment frags in code sections,
7165 so do not just assume that we should use the MAP_DATA state. */
7166 mapping_state_2 (subseg_text_p (now_seg) ? MAP_INSN : MAP_DATA, max_chars);
7169 mapping_state_2 (MAP_INSN, max_chars);
7176 /* Initialize the DWARF-2 unwind information for this procedure. */
7179 tc_aarch64_frame_initial_instructions (void)
7181 cfi_add_CFA_def_cfa (REG_SP, 0);
7183 #endif /* OBJ_ELF */
7185 /* Convert REGNAME to a DWARF-2 register number. */
7188 tc_aarch64_regname_to_dw2regnum (char *regname)
7190 const reg_entry *reg = parse_reg (®name);
7196 case REG_TYPE_SP_32:
7197 case REG_TYPE_SP_64:
7207 return reg->number + 64;
7215 /* Implement DWARF2_ADDR_SIZE. */
7218 aarch64_dwarf2_addr_size (void)
7220 #if defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF)
7224 return bfd_arch_bits_per_address (stdoutput) / 8;
7227 /* MD interface: Symbol and relocation handling. */
7229 /* Return the address within the segment that a PC-relative fixup is
7230 relative to. For AArch64 PC-relative fixups applied to instructions
7231 are generally relative to the location plus AARCH64_PCREL_OFFSET bytes. */
7234 md_pcrel_from_section (fixS * fixP, segT seg)
7236 offsetT base = fixP->fx_where + fixP->fx_frag->fr_address;
7238 /* If this is pc-relative and we are going to emit a relocation
7239 then we just want to put out any pipeline compensation that the linker
7240 will need. Otherwise we want to use the calculated base. */
7242 && ((fixP->fx_addsy && S_GET_SEGMENT (fixP->fx_addsy) != seg)
7243 || aarch64_force_relocation (fixP)))
7246 /* AArch64 should be consistent for all pc-relative relocations. */
7247 return base + AARCH64_PCREL_OFFSET;
7250 /* Under ELF we need to default _GLOBAL_OFFSET_TABLE.
7251 Otherwise we have no need to default values of symbols. */
7254 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
7257 if (name[0] == '_' && name[1] == 'G'
7258 && streq (name, GLOBAL_OFFSET_TABLE_NAME))
7262 if (symbol_find (name))
7263 as_bad (_("GOT already in the symbol table"));
7265 GOT_symbol = symbol_new (name, undefined_section,
7266 (valueT) 0, &zero_address_frag);
7276 /* Return non-zero if the indicated VALUE has overflowed the maximum
7277 range expressible by a unsigned number with the indicated number of
7281 unsigned_overflow (valueT value, unsigned bits)
7284 if (bits >= sizeof (valueT) * 8)
7286 lim = (valueT) 1 << bits;
7287 return (value >= lim);
7291 /* Return non-zero if the indicated VALUE has overflowed the maximum
7292 range expressible by an signed number with the indicated number of
7296 signed_overflow (offsetT value, unsigned bits)
7299 if (bits >= sizeof (offsetT) * 8)
7301 lim = (offsetT) 1 << (bits - 1);
7302 return (value < -lim || value >= lim);
7305 /* Given an instruction in *INST, which is expected to be a scaled, 12-bit,
7306 unsigned immediate offset load/store instruction, try to encode it as
7307 an unscaled, 9-bit, signed immediate offset load/store instruction.
7308 Return TRUE if it is successful; otherwise return FALSE.
7310 As a programmer-friendly assembler, LDUR/STUR instructions can be generated
7311 in response to the standard LDR/STR mnemonics when the immediate offset is
7312 unambiguous, i.e. when it is negative or unaligned. */
7315 try_to_encode_as_unscaled_ldst (aarch64_inst *instr)
7318 enum aarch64_op new_op;
7319 const aarch64_opcode *new_opcode;
7321 gas_assert (instr->opcode->iclass == ldst_pos);
7323 switch (instr->opcode->op)
7325 case OP_LDRB_POS:new_op = OP_LDURB; break;
7326 case OP_STRB_POS: new_op = OP_STURB; break;
7327 case OP_LDRSB_POS: new_op = OP_LDURSB; break;
7328 case OP_LDRH_POS: new_op = OP_LDURH; break;
7329 case OP_STRH_POS: new_op = OP_STURH; break;
7330 case OP_LDRSH_POS: new_op = OP_LDURSH; break;
7331 case OP_LDR_POS: new_op = OP_LDUR; break;
7332 case OP_STR_POS: new_op = OP_STUR; break;
7333 case OP_LDRF_POS: new_op = OP_LDURV; break;
7334 case OP_STRF_POS: new_op = OP_STURV; break;
7335 case OP_LDRSW_POS: new_op = OP_LDURSW; break;
7336 case OP_PRFM_POS: new_op = OP_PRFUM; break;
7337 default: new_op = OP_NIL; break;
7340 if (new_op == OP_NIL)
7343 new_opcode = aarch64_get_opcode (new_op);
7344 gas_assert (new_opcode != NULL);
7346 DEBUG_TRACE ("Check programmer-friendly STURB/LDURB -> STRB/LDRB: %d == %d",
7347 instr->opcode->op, new_opcode->op);
7349 aarch64_replace_opcode (instr, new_opcode);
7351 /* Clear up the ADDR_SIMM9's qualifier; otherwise the
7352 qualifier matching may fail because the out-of-date qualifier will
7353 prevent the operand being updated with a new and correct qualifier. */
7354 idx = aarch64_operand_index (instr->opcode->operands,
7355 AARCH64_OPND_ADDR_SIMM9);
7356 gas_assert (idx == 1);
7357 instr->operands[idx].qualifier = AARCH64_OPND_QLF_NIL;
7359 DEBUG_TRACE ("Found LDURB entry to encode programmer-friendly LDRB");
7361 if (!aarch64_opcode_encode (instr->opcode, instr, &instr->value, NULL, NULL))
7367 /* Called by fix_insn to fix a MOV immediate alias instruction.
7369 Operand for a generic move immediate instruction, which is an alias
7370 instruction that generates a single MOVZ, MOVN or ORR instruction to loads
7371 a 32-bit/64-bit immediate value into general register. An assembler error
7372 shall result if the immediate cannot be created by a single one of these
7373 instructions. If there is a choice, then to ensure reversability an
7374 assembler must prefer a MOVZ to MOVN, and MOVZ or MOVN to ORR. */
7377 fix_mov_imm_insn (fixS *fixP, char *buf, aarch64_inst *instr, offsetT value)
7379 const aarch64_opcode *opcode;
7381 /* Need to check if the destination is SP/ZR. The check has to be done
7382 before any aarch64_replace_opcode. */
7383 int try_mov_wide_p = !aarch64_stack_pointer_p (&instr->operands[0]);
7384 int try_mov_bitmask_p = !aarch64_zero_register_p (&instr->operands[0]);
7386 instr->operands[1].imm.value = value;
7387 instr->operands[1].skip = 0;
7391 /* Try the MOVZ alias. */
7392 opcode = aarch64_get_opcode (OP_MOV_IMM_WIDE);
7393 aarch64_replace_opcode (instr, opcode);
7394 if (aarch64_opcode_encode (instr->opcode, instr,
7395 &instr->value, NULL, NULL))
7397 put_aarch64_insn (buf, instr->value);
7400 /* Try the MOVK alias. */
7401 opcode = aarch64_get_opcode (OP_MOV_IMM_WIDEN);
7402 aarch64_replace_opcode (instr, opcode);
7403 if (aarch64_opcode_encode (instr->opcode, instr,
7404 &instr->value, NULL, NULL))
7406 put_aarch64_insn (buf, instr->value);
7411 if (try_mov_bitmask_p)
7413 /* Try the ORR alias. */
7414 opcode = aarch64_get_opcode (OP_MOV_IMM_LOG);
7415 aarch64_replace_opcode (instr, opcode);
7416 if (aarch64_opcode_encode (instr->opcode, instr,
7417 &instr->value, NULL, NULL))
7419 put_aarch64_insn (buf, instr->value);
7424 as_bad_where (fixP->fx_file, fixP->fx_line,
7425 _("immediate cannot be moved by a single instruction"));
7428 /* An instruction operand which is immediate related may have symbol used
7429 in the assembly, e.g.
7432 .set u32, 0x00ffff00
7434 At the time when the assembly instruction is parsed, a referenced symbol,
7435 like 'u32' in the above example may not have been seen; a fixS is created
7436 in such a case and is handled here after symbols have been resolved.
7437 Instruction is fixed up with VALUE using the information in *FIXP plus
7438 extra information in FLAGS.
7440 This function is called by md_apply_fix to fix up instructions that need
7441 a fix-up described above but does not involve any linker-time relocation. */
7444 fix_insn (fixS *fixP, uint32_t flags, offsetT value)
7448 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
7449 enum aarch64_opnd opnd = fixP->tc_fix_data.opnd;
7450 aarch64_inst *new_inst = fixP->tc_fix_data.inst;
7454 /* Now the instruction is about to be fixed-up, so the operand that
7455 was previously marked as 'ignored' needs to be unmarked in order
7456 to get the encoding done properly. */
7457 idx = aarch64_operand_index (new_inst->opcode->operands, opnd);
7458 new_inst->operands[idx].skip = 0;
7461 gas_assert (opnd != AARCH64_OPND_NIL);
7465 case AARCH64_OPND_EXCEPTION:
7466 if (unsigned_overflow (value, 16))
7467 as_bad_where (fixP->fx_file, fixP->fx_line,
7468 _("immediate out of range"));
7469 insn = get_aarch64_insn (buf);
7470 insn |= encode_svc_imm (value);
7471 put_aarch64_insn (buf, insn);
7474 case AARCH64_OPND_AIMM:
7475 /* ADD or SUB with immediate.
7476 NOTE this assumes we come here with a add/sub shifted reg encoding
7477 3 322|2222|2 2 2 21111 111111
7478 1 098|7654|3 2 1 09876 543210 98765 43210
7479 0b000000 sf 000|1011|shift 0 Rm imm6 Rn Rd ADD
7480 2b000000 sf 010|1011|shift 0 Rm imm6 Rn Rd ADDS
7481 4b000000 sf 100|1011|shift 0 Rm imm6 Rn Rd SUB
7482 6b000000 sf 110|1011|shift 0 Rm imm6 Rn Rd SUBS
7484 3 322|2222|2 2 221111111111
7485 1 098|7654|3 2 109876543210 98765 43210
7486 11000000 sf 001|0001|shift imm12 Rn Rd ADD
7487 31000000 sf 011|0001|shift imm12 Rn Rd ADDS
7488 51000000 sf 101|0001|shift imm12 Rn Rd SUB
7489 71000000 sf 111|0001|shift imm12 Rn Rd SUBS
7490 Fields sf Rn Rd are already set. */
7491 insn = get_aarch64_insn (buf);
7495 insn = reencode_addsub_switch_add_sub (insn);
7499 if ((flags & FIXUP_F_HAS_EXPLICIT_SHIFT) == 0
7500 && unsigned_overflow (value, 12))
7502 /* Try to shift the value by 12 to make it fit. */
7503 if (((value >> 12) << 12) == value
7504 && ! unsigned_overflow (value, 12 + 12))
7507 insn |= encode_addsub_imm_shift_amount (1);
7511 if (unsigned_overflow (value, 12))
7512 as_bad_where (fixP->fx_file, fixP->fx_line,
7513 _("immediate out of range"));
7515 insn |= encode_addsub_imm (value);
7517 put_aarch64_insn (buf, insn);
7520 case AARCH64_OPND_SIMD_IMM:
7521 case AARCH64_OPND_SIMD_IMM_SFT:
7522 case AARCH64_OPND_LIMM:
7523 /* Bit mask immediate. */
7524 gas_assert (new_inst != NULL);
7525 idx = aarch64_operand_index (new_inst->opcode->operands, opnd);
7526 new_inst->operands[idx].imm.value = value;
7527 if (aarch64_opcode_encode (new_inst->opcode, new_inst,
7528 &new_inst->value, NULL, NULL))
7529 put_aarch64_insn (buf, new_inst->value);
7531 as_bad_where (fixP->fx_file, fixP->fx_line,
7532 _("invalid immediate"));
7535 case AARCH64_OPND_HALF:
7536 /* 16-bit unsigned immediate. */
7537 if (unsigned_overflow (value, 16))
7538 as_bad_where (fixP->fx_file, fixP->fx_line,
7539 _("immediate out of range"));
7540 insn = get_aarch64_insn (buf);
7541 insn |= encode_movw_imm (value & 0xffff);
7542 put_aarch64_insn (buf, insn);
7545 case AARCH64_OPND_IMM_MOV:
7546 /* Operand for a generic move immediate instruction, which is
7547 an alias instruction that generates a single MOVZ, MOVN or ORR
7548 instruction to loads a 32-bit/64-bit immediate value into general
7549 register. An assembler error shall result if the immediate cannot be
7550 created by a single one of these instructions. If there is a choice,
7551 then to ensure reversability an assembler must prefer a MOVZ to MOVN,
7552 and MOVZ or MOVN to ORR. */
7553 gas_assert (new_inst != NULL);
7554 fix_mov_imm_insn (fixP, buf, new_inst, value);
7557 case AARCH64_OPND_ADDR_SIMM7:
7558 case AARCH64_OPND_ADDR_SIMM9:
7559 case AARCH64_OPND_ADDR_SIMM9_2:
7560 case AARCH64_OPND_ADDR_SIMM10:
7561 case AARCH64_OPND_ADDR_UIMM12:
7562 /* Immediate offset in an address. */
7563 insn = get_aarch64_insn (buf);
7565 gas_assert (new_inst != NULL && new_inst->value == insn);
7566 gas_assert (new_inst->opcode->operands[1] == opnd
7567 || new_inst->opcode->operands[2] == opnd);
7569 /* Get the index of the address operand. */
7570 if (new_inst->opcode->operands[1] == opnd)
7571 /* e.g. STR <Xt>, [<Xn|SP>, <R><m>{, <extend> {<amount>}}]. */
7574 /* e.g. LDP <Qt1>, <Qt2>, [<Xn|SP>{, #<imm>}]. */
7577 /* Update the resolved offset value. */
7578 new_inst->operands[idx].addr.offset.imm = value;
7580 /* Encode/fix-up. */
7581 if (aarch64_opcode_encode (new_inst->opcode, new_inst,
7582 &new_inst->value, NULL, NULL))
7584 put_aarch64_insn (buf, new_inst->value);
7587 else if (new_inst->opcode->iclass == ldst_pos
7588 && try_to_encode_as_unscaled_ldst (new_inst))
7590 put_aarch64_insn (buf, new_inst->value);
7594 as_bad_where (fixP->fx_file, fixP->fx_line,
7595 _("immediate offset out of range"));
7600 as_fatal (_("unhandled operand code %d"), opnd);
7604 /* Apply a fixup (fixP) to segment data, once it has been determined
7605 by our caller that we have all the info we need to fix it up.
7607 Parameter valP is the pointer to the value of the bits. */
7610 md_apply_fix (fixS * fixP, valueT * valP, segT seg)
7612 offsetT value = *valP;
7614 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
7616 unsigned flags = fixP->fx_addnumber;
7618 DEBUG_TRACE ("\n\n");
7619 DEBUG_TRACE ("~~~~~~~~~~~~~~~~~~~~~~~~~");
7620 DEBUG_TRACE ("Enter md_apply_fix");
7622 gas_assert (fixP->fx_r_type <= BFD_RELOC_UNUSED);
7624 /* Note whether this will delete the relocation. */
7626 if (fixP->fx_addsy == 0 && !fixP->fx_pcrel)
7629 /* Process the relocations. */
7630 switch (fixP->fx_r_type)
7632 case BFD_RELOC_NONE:
7633 /* This will need to go in the object file. */
7638 case BFD_RELOC_8_PCREL:
7639 if (fixP->fx_done || !seg->use_rela_p)
7640 md_number_to_chars (buf, value, 1);
7644 case BFD_RELOC_16_PCREL:
7645 if (fixP->fx_done || !seg->use_rela_p)
7646 md_number_to_chars (buf, value, 2);
7650 case BFD_RELOC_32_PCREL:
7651 if (fixP->fx_done || !seg->use_rela_p)
7652 md_number_to_chars (buf, value, 4);
7656 case BFD_RELOC_64_PCREL:
7657 if (fixP->fx_done || !seg->use_rela_p)
7658 md_number_to_chars (buf, value, 8);
7661 case BFD_RELOC_AARCH64_GAS_INTERNAL_FIXUP:
7662 /* We claim that these fixups have been processed here, even if
7663 in fact we generate an error because we do not have a reloc
7664 for them, so tc_gen_reloc() will reject them. */
7666 if (fixP->fx_addsy && !S_IS_DEFINED (fixP->fx_addsy))
7668 as_bad_where (fixP->fx_file, fixP->fx_line,
7669 _("undefined symbol %s used as an immediate value"),
7670 S_GET_NAME (fixP->fx_addsy));
7671 goto apply_fix_return;
7673 fix_insn (fixP, flags, value);
7676 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
7677 if (fixP->fx_done || !seg->use_rela_p)
7680 as_bad_where (fixP->fx_file, fixP->fx_line,
7681 _("pc-relative load offset not word aligned"));
7682 if (signed_overflow (value, 21))
7683 as_bad_where (fixP->fx_file, fixP->fx_line,
7684 _("pc-relative load offset out of range"));
7685 insn = get_aarch64_insn (buf);
7686 insn |= encode_ld_lit_ofs_19 (value >> 2);
7687 put_aarch64_insn (buf, insn);
7691 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
7692 if (fixP->fx_done || !seg->use_rela_p)
7694 if (signed_overflow (value, 21))
7695 as_bad_where (fixP->fx_file, fixP->fx_line,
7696 _("pc-relative address offset out of range"));
7697 insn = get_aarch64_insn (buf);
7698 insn |= encode_adr_imm (value);
7699 put_aarch64_insn (buf, insn);
7703 case BFD_RELOC_AARCH64_BRANCH19:
7704 if (fixP->fx_done || !seg->use_rela_p)
7707 as_bad_where (fixP->fx_file, fixP->fx_line,
7708 _("conditional branch target not word aligned"));
7709 if (signed_overflow (value, 21))
7710 as_bad_where (fixP->fx_file, fixP->fx_line,
7711 _("conditional branch out of range"));
7712 insn = get_aarch64_insn (buf);
7713 insn |= encode_cond_branch_ofs_19 (value >> 2);
7714 put_aarch64_insn (buf, insn);
7718 case BFD_RELOC_AARCH64_TSTBR14:
7719 if (fixP->fx_done || !seg->use_rela_p)
7722 as_bad_where (fixP->fx_file, fixP->fx_line,
7723 _("conditional branch target not word aligned"));
7724 if (signed_overflow (value, 16))
7725 as_bad_where (fixP->fx_file, fixP->fx_line,
7726 _("conditional branch out of range"));
7727 insn = get_aarch64_insn (buf);
7728 insn |= encode_tst_branch_ofs_14 (value >> 2);
7729 put_aarch64_insn (buf, insn);
7733 case BFD_RELOC_AARCH64_CALL26:
7734 case BFD_RELOC_AARCH64_JUMP26:
7735 if (fixP->fx_done || !seg->use_rela_p)
7738 as_bad_where (fixP->fx_file, fixP->fx_line,
7739 _("branch target not word aligned"));
7740 if (signed_overflow (value, 28))
7741 as_bad_where (fixP->fx_file, fixP->fx_line,
7742 _("branch out of range"));
7743 insn = get_aarch64_insn (buf);
7744 insn |= encode_branch_ofs_26 (value >> 2);
7745 put_aarch64_insn (buf, insn);
7749 case BFD_RELOC_AARCH64_MOVW_G0:
7750 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7751 case BFD_RELOC_AARCH64_MOVW_G0_S:
7752 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
7753 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
7754 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
7757 case BFD_RELOC_AARCH64_MOVW_G1:
7758 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7759 case BFD_RELOC_AARCH64_MOVW_G1_S:
7760 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
7761 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
7762 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
7765 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7767 S_SET_THREAD_LOCAL (fixP->fx_addsy);
7768 /* Should always be exported to object file, see
7769 aarch64_force_relocation(). */
7770 gas_assert (!fixP->fx_done);
7771 gas_assert (seg->use_rela_p);
7773 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
7775 S_SET_THREAD_LOCAL (fixP->fx_addsy);
7776 /* Should always be exported to object file, see
7777 aarch64_force_relocation(). */
7778 gas_assert (!fixP->fx_done);
7779 gas_assert (seg->use_rela_p);
7781 case BFD_RELOC_AARCH64_MOVW_G2:
7782 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7783 case BFD_RELOC_AARCH64_MOVW_G2_S:
7784 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
7785 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
7788 case BFD_RELOC_AARCH64_MOVW_G3:
7789 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
7792 if (fixP->fx_done || !seg->use_rela_p)
7794 insn = get_aarch64_insn (buf);
7798 /* REL signed addend must fit in 16 bits */
7799 if (signed_overflow (value, 16))
7800 as_bad_where (fixP->fx_file, fixP->fx_line,
7801 _("offset out of range"));
7805 /* Check for overflow and scale. */
7806 switch (fixP->fx_r_type)
7808 case BFD_RELOC_AARCH64_MOVW_G0:
7809 case BFD_RELOC_AARCH64_MOVW_G1:
7810 case BFD_RELOC_AARCH64_MOVW_G2:
7811 case BFD_RELOC_AARCH64_MOVW_G3:
7812 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
7813 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
7814 if (unsigned_overflow (value, scale + 16))
7815 as_bad_where (fixP->fx_file, fixP->fx_line,
7816 _("unsigned value out of range"));
7818 case BFD_RELOC_AARCH64_MOVW_G0_S:
7819 case BFD_RELOC_AARCH64_MOVW_G1_S:
7820 case BFD_RELOC_AARCH64_MOVW_G2_S:
7821 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
7822 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
7823 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
7824 /* NOTE: We can only come here with movz or movn. */
7825 if (signed_overflow (value, scale + 16))
7826 as_bad_where (fixP->fx_file, fixP->fx_line,
7827 _("signed value out of range"));
7830 /* Force use of MOVN. */
7832 insn = reencode_movzn_to_movn (insn);
7836 /* Force use of MOVZ. */
7837 insn = reencode_movzn_to_movz (insn);
7841 /* Unchecked relocations. */
7847 /* Insert value into MOVN/MOVZ/MOVK instruction. */
7848 insn |= encode_movw_imm (value & 0xffff);
7850 put_aarch64_insn (buf, insn);
7854 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_LO12_NC:
7855 fixP->fx_r_type = (ilp32_p
7856 ? BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
7857 : BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
7858 S_SET_THREAD_LOCAL (fixP->fx_addsy);
7859 /* Should always be exported to object file, see
7860 aarch64_force_relocation(). */
7861 gas_assert (!fixP->fx_done);
7862 gas_assert (seg->use_rela_p);
7865 case BFD_RELOC_AARCH64_TLSDESC_LD_LO12_NC:
7866 fixP->fx_r_type = (ilp32_p
7867 ? BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
7868 : BFD_RELOC_AARCH64_TLSDESC_LD64_LO12);
7869 S_SET_THREAD_LOCAL (fixP->fx_addsy);
7870 /* Should always be exported to object file, see
7871 aarch64_force_relocation(). */
7872 gas_assert (!fixP->fx_done);
7873 gas_assert (seg->use_rela_p);
7876 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
7877 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
7878 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7879 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
7880 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
7881 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
7882 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7883 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
7884 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7885 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
7886 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
7887 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
7888 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7889 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
7890 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
7891 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7892 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
7893 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
7894 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
7895 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
7896 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
7897 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
7898 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
7899 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
7900 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
7901 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
7902 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
7903 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
7904 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
7905 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
7906 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
7907 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
7908 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
7909 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
7910 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
7911 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
7912 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12:
7913 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC:
7914 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12:
7915 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC:
7916 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12:
7917 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC:
7918 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12:
7919 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC:
7920 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
7921 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
7922 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
7923 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
7924 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
7925 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
7926 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
7927 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
7928 S_SET_THREAD_LOCAL (fixP->fx_addsy);
7929 /* Should always be exported to object file, see
7930 aarch64_force_relocation(). */
7931 gas_assert (!fixP->fx_done);
7932 gas_assert (seg->use_rela_p);
7935 case BFD_RELOC_AARCH64_LD_GOT_LO12_NC:
7936 /* Should always be exported to object file, see
7937 aarch64_force_relocation(). */
7938 fixP->fx_r_type = (ilp32_p
7939 ? BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
7940 : BFD_RELOC_AARCH64_LD64_GOT_LO12_NC);
7941 gas_assert (!fixP->fx_done);
7942 gas_assert (seg->use_rela_p);
7945 case BFD_RELOC_AARCH64_ADD_LO12:
7946 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7947 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7948 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7949 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7950 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
7951 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7952 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
7953 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7954 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
7955 case BFD_RELOC_AARCH64_LDST128_LO12:
7956 case BFD_RELOC_AARCH64_LDST16_LO12:
7957 case BFD_RELOC_AARCH64_LDST32_LO12:
7958 case BFD_RELOC_AARCH64_LDST64_LO12:
7959 case BFD_RELOC_AARCH64_LDST8_LO12:
7960 /* Should always be exported to object file, see
7961 aarch64_force_relocation(). */
7962 gas_assert (!fixP->fx_done);
7963 gas_assert (seg->use_rela_p);
7966 case BFD_RELOC_AARCH64_TLSDESC_ADD:
7967 case BFD_RELOC_AARCH64_TLSDESC_CALL:
7968 case BFD_RELOC_AARCH64_TLSDESC_LDR:
7971 case BFD_RELOC_UNUSED:
7972 /* An error will already have been reported. */
7976 as_bad_where (fixP->fx_file, fixP->fx_line,
7977 _("unexpected %s fixup"),
7978 bfd_get_reloc_code_name (fixP->fx_r_type));
7983 /* Free the allocated the struct aarch64_inst.
7984 N.B. currently there are very limited number of fix-up types actually use
7985 this field, so the impact on the performance should be minimal . */
7986 if (fixP->tc_fix_data.inst != NULL)
7987 free (fixP->tc_fix_data.inst);
7992 /* Translate internal representation of relocation info to BFD target
7996 tc_gen_reloc (asection * section, fixS * fixp)
7999 bfd_reloc_code_real_type code;
8001 reloc = XNEW (arelent);
8003 reloc->sym_ptr_ptr = XNEW (asymbol *);
8004 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
8005 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
8009 if (section->use_rela_p)
8010 fixp->fx_offset -= md_pcrel_from_section (fixp, section);
8012 fixp->fx_offset = reloc->address;
8014 reloc->addend = fixp->fx_offset;
8016 code = fixp->fx_r_type;
8021 code = BFD_RELOC_16_PCREL;
8026 code = BFD_RELOC_32_PCREL;
8031 code = BFD_RELOC_64_PCREL;
8038 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
8039 if (reloc->howto == NULL)
8041 as_bad_where (fixp->fx_file, fixp->fx_line,
8043 ("cannot represent %s relocation in this object file format"),
8044 bfd_get_reloc_code_name (code));
8051 /* This fix_new is called by cons via TC_CONS_FIX_NEW. */
8054 cons_fix_new_aarch64 (fragS * frag, int where, int size, expressionS * exp)
8056 bfd_reloc_code_real_type type;
8060 FIXME: @@ Should look at CPU word size. */
8067 type = BFD_RELOC_16;
8070 type = BFD_RELOC_32;
8073 type = BFD_RELOC_64;
8076 as_bad (_("cannot do %u-byte relocation"), size);
8077 type = BFD_RELOC_UNUSED;
8081 fix_new_exp (frag, where, (int) size, exp, pcrel, type);
8085 aarch64_force_relocation (struct fix *fixp)
8087 switch (fixp->fx_r_type)
8089 case BFD_RELOC_AARCH64_GAS_INTERNAL_FIXUP:
8090 /* Perform these "immediate" internal relocations
8091 even if the symbol is extern or weak. */
8094 case BFD_RELOC_AARCH64_LD_GOT_LO12_NC:
8095 case BFD_RELOC_AARCH64_TLSDESC_LD_LO12_NC:
8096 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_LO12_NC:
8097 /* Pseudo relocs that need to be fixed up according to
8101 case BFD_RELOC_AARCH64_ADD_LO12:
8102 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
8103 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
8104 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
8105 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
8106 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
8107 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
8108 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
8109 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
8110 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
8111 case BFD_RELOC_AARCH64_LDST128_LO12:
8112 case BFD_RELOC_AARCH64_LDST16_LO12:
8113 case BFD_RELOC_AARCH64_LDST32_LO12:
8114 case BFD_RELOC_AARCH64_LDST64_LO12:
8115 case BFD_RELOC_AARCH64_LDST8_LO12:
8116 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
8117 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
8118 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
8119 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
8120 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
8121 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
8122 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
8123 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
8124 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
8125 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
8126 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
8127 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
8128 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
8129 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
8130 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
8131 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
8132 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
8133 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
8134 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
8135 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
8136 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
8137 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
8138 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
8139 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
8140 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
8141 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
8142 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
8143 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
8144 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
8145 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
8146 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
8147 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
8148 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
8149 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
8150 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
8151 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
8152 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
8153 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
8154 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12:
8155 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC:
8156 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12:
8157 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC:
8158 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12:
8159 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC:
8160 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12:
8161 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC:
8162 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
8163 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
8164 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
8165 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
8166 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
8167 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
8168 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
8169 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
8170 /* Always leave these relocations for the linker. */
8177 return generic_force_reloc (fixp);
8182 /* Implement md_after_parse_args. This is the earliest time we need to decide
8183 ABI. If no -mabi specified, the ABI will be decided by target triplet. */
8186 aarch64_after_parse_args (void)
8188 if (aarch64_abi != AARCH64_ABI_NONE)
8191 /* DEFAULT_ARCH will have ":32" extension if it's configured for ILP32. */
8192 if (strlen (default_arch) > 7 && strcmp (default_arch + 7, ":32") == 0)
8193 aarch64_abi = AARCH64_ABI_ILP32;
8195 aarch64_abi = AARCH64_ABI_LP64;
8199 elf64_aarch64_target_format (void)
8201 if (strcmp (TARGET_OS, "cloudabi") == 0)
8203 /* FIXME: What to do for ilp32_p ? */
8204 return target_big_endian ? "elf64-bigaarch64-cloudabi" : "elf64-littleaarch64-cloudabi";
8206 if (target_big_endian)
8207 return ilp32_p ? "elf32-bigaarch64" : "elf64-bigaarch64";
8209 return ilp32_p ? "elf32-littleaarch64" : "elf64-littleaarch64";
8213 aarch64elf_frob_symbol (symbolS * symp, int *puntp)
8215 elf_frob_symbol (symp, puntp);
8219 /* MD interface: Finalization. */
8221 /* A good place to do this, although this was probably not intended
8222 for this kind of use. We need to dump the literal pool before
8223 references are made to a null symbol pointer. */
8226 aarch64_cleanup (void)
8230 for (pool = list_of_pools; pool; pool = pool->next)
8232 /* Put it at the end of the relevant section. */
8233 subseg_set (pool->section, pool->sub_section);
8239 /* Remove any excess mapping symbols generated for alignment frags in
8240 SEC. We may have created a mapping symbol before a zero byte
8241 alignment; remove it if there's a mapping symbol after the
8244 check_mapping_symbols (bfd * abfd ATTRIBUTE_UNUSED, asection * sec,
8245 void *dummy ATTRIBUTE_UNUSED)
8247 segment_info_type *seginfo = seg_info (sec);
8250 if (seginfo == NULL || seginfo->frchainP == NULL)
8253 for (fragp = seginfo->frchainP->frch_root;
8254 fragp != NULL; fragp = fragp->fr_next)
8256 symbolS *sym = fragp->tc_frag_data.last_map;
8257 fragS *next = fragp->fr_next;
8259 /* Variable-sized frags have been converted to fixed size by
8260 this point. But if this was variable-sized to start with,
8261 there will be a fixed-size frag after it. So don't handle
8263 if (sym == NULL || next == NULL)
8266 if (S_GET_VALUE (sym) < next->fr_address)
8267 /* Not at the end of this frag. */
8269 know (S_GET_VALUE (sym) == next->fr_address);
8273 if (next->tc_frag_data.first_map != NULL)
8275 /* Next frag starts with a mapping symbol. Discard this
8277 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
8281 if (next->fr_next == NULL)
8283 /* This mapping symbol is at the end of the section. Discard
8285 know (next->fr_fix == 0 && next->fr_var == 0);
8286 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
8290 /* As long as we have empty frags without any mapping symbols,
8292 /* If the next frag is non-empty and does not start with a
8293 mapping symbol, then this mapping symbol is required. */
8294 if (next->fr_address != next->fr_next->fr_address)
8297 next = next->fr_next;
8299 while (next != NULL);
8304 /* Adjust the symbol table. */
8307 aarch64_adjust_symtab (void)
8310 /* Remove any overlapping mapping symbols generated by alignment frags. */
8311 bfd_map_over_sections (stdoutput, check_mapping_symbols, (char *) 0);
8312 /* Now do generic ELF adjustments. */
8313 elf_adjust_symtab ();
8318 checked_hash_insert (struct hash_control *table, const char *key, void *value)
8320 const char *hash_err;
8322 hash_err = hash_insert (table, key, value);
8324 printf ("Internal Error: Can't hash %s\n", key);
8328 fill_instruction_hash_table (void)
8330 aarch64_opcode *opcode = aarch64_opcode_table;
8332 while (opcode->name != NULL)
8334 templates *templ, *new_templ;
8335 templ = hash_find (aarch64_ops_hsh, opcode->name);
8337 new_templ = XNEW (templates);
8338 new_templ->opcode = opcode;
8339 new_templ->next = NULL;
8342 checked_hash_insert (aarch64_ops_hsh, opcode->name, (void *) new_templ);
8345 new_templ->next = templ->next;
8346 templ->next = new_templ;
8353 convert_to_upper (char *dst, const char *src, size_t num)
8356 for (i = 0; i < num && *src != '\0'; ++i, ++dst, ++src)
8357 *dst = TOUPPER (*src);
8361 /* Assume STR point to a lower-case string, allocate, convert and return
8362 the corresponding upper-case string. */
8363 static inline const char*
8364 get_upper_str (const char *str)
8367 size_t len = strlen (str);
8368 ret = XNEWVEC (char, len + 1);
8369 convert_to_upper (ret, str, len);
8373 /* MD interface: Initialization. */
8381 if ((aarch64_ops_hsh = hash_new ()) == NULL
8382 || (aarch64_cond_hsh = hash_new ()) == NULL
8383 || (aarch64_shift_hsh = hash_new ()) == NULL
8384 || (aarch64_sys_regs_hsh = hash_new ()) == NULL
8385 || (aarch64_pstatefield_hsh = hash_new ()) == NULL
8386 || (aarch64_sys_regs_ic_hsh = hash_new ()) == NULL
8387 || (aarch64_sys_regs_dc_hsh = hash_new ()) == NULL
8388 || (aarch64_sys_regs_at_hsh = hash_new ()) == NULL
8389 || (aarch64_sys_regs_tlbi_hsh = hash_new ()) == NULL
8390 || (aarch64_reg_hsh = hash_new ()) == NULL
8391 || (aarch64_barrier_opt_hsh = hash_new ()) == NULL
8392 || (aarch64_nzcv_hsh = hash_new ()) == NULL
8393 || (aarch64_pldop_hsh = hash_new ()) == NULL
8394 || (aarch64_hint_opt_hsh = hash_new ()) == NULL)
8395 as_fatal (_("virtual memory exhausted"));
8397 fill_instruction_hash_table ();
8399 for (i = 0; aarch64_sys_regs[i].name != NULL; ++i)
8400 checked_hash_insert (aarch64_sys_regs_hsh, aarch64_sys_regs[i].name,
8401 (void *) (aarch64_sys_regs + i));
8403 for (i = 0; aarch64_pstatefields[i].name != NULL; ++i)
8404 checked_hash_insert (aarch64_pstatefield_hsh,
8405 aarch64_pstatefields[i].name,
8406 (void *) (aarch64_pstatefields + i));
8408 for (i = 0; aarch64_sys_regs_ic[i].name != NULL; i++)
8409 checked_hash_insert (aarch64_sys_regs_ic_hsh,
8410 aarch64_sys_regs_ic[i].name,
8411 (void *) (aarch64_sys_regs_ic + i));
8413 for (i = 0; aarch64_sys_regs_dc[i].name != NULL; i++)
8414 checked_hash_insert (aarch64_sys_regs_dc_hsh,
8415 aarch64_sys_regs_dc[i].name,
8416 (void *) (aarch64_sys_regs_dc + i));
8418 for (i = 0; aarch64_sys_regs_at[i].name != NULL; i++)
8419 checked_hash_insert (aarch64_sys_regs_at_hsh,
8420 aarch64_sys_regs_at[i].name,
8421 (void *) (aarch64_sys_regs_at + i));
8423 for (i = 0; aarch64_sys_regs_tlbi[i].name != NULL; i++)
8424 checked_hash_insert (aarch64_sys_regs_tlbi_hsh,
8425 aarch64_sys_regs_tlbi[i].name,
8426 (void *) (aarch64_sys_regs_tlbi + i));
8428 for (i = 0; i < ARRAY_SIZE (reg_names); i++)
8429 checked_hash_insert (aarch64_reg_hsh, reg_names[i].name,
8430 (void *) (reg_names + i));
8432 for (i = 0; i < ARRAY_SIZE (nzcv_names); i++)
8433 checked_hash_insert (aarch64_nzcv_hsh, nzcv_names[i].template,
8434 (void *) (nzcv_names + i));
8436 for (i = 0; aarch64_operand_modifiers[i].name != NULL; i++)
8438 const char *name = aarch64_operand_modifiers[i].name;
8439 checked_hash_insert (aarch64_shift_hsh, name,
8440 (void *) (aarch64_operand_modifiers + i));
8441 /* Also hash the name in the upper case. */
8442 checked_hash_insert (aarch64_shift_hsh, get_upper_str (name),
8443 (void *) (aarch64_operand_modifiers + i));
8446 for (i = 0; i < ARRAY_SIZE (aarch64_conds); i++)
8449 /* A condition code may have alias(es), e.g. "cc", "lo" and "ul" are
8450 the same condition code. */
8451 for (j = 0; j < ARRAY_SIZE (aarch64_conds[i].names); ++j)
8453 const char *name = aarch64_conds[i].names[j];
8456 checked_hash_insert (aarch64_cond_hsh, name,
8457 (void *) (aarch64_conds + i));
8458 /* Also hash the name in the upper case. */
8459 checked_hash_insert (aarch64_cond_hsh, get_upper_str (name),
8460 (void *) (aarch64_conds + i));
8464 for (i = 0; i < ARRAY_SIZE (aarch64_barrier_options); i++)
8466 const char *name = aarch64_barrier_options[i].name;
8467 /* Skip xx00 - the unallocated values of option. */
8470 checked_hash_insert (aarch64_barrier_opt_hsh, name,
8471 (void *) (aarch64_barrier_options + i));
8472 /* Also hash the name in the upper case. */
8473 checked_hash_insert (aarch64_barrier_opt_hsh, get_upper_str (name),
8474 (void *) (aarch64_barrier_options + i));
8477 for (i = 0; i < ARRAY_SIZE (aarch64_prfops); i++)
8479 const char* name = aarch64_prfops[i].name;
8480 /* Skip the unallocated hint encodings. */
8483 checked_hash_insert (aarch64_pldop_hsh, name,
8484 (void *) (aarch64_prfops + i));
8485 /* Also hash the name in the upper case. */
8486 checked_hash_insert (aarch64_pldop_hsh, get_upper_str (name),
8487 (void *) (aarch64_prfops + i));
8490 for (i = 0; aarch64_hint_options[i].name != NULL; i++)
8492 const char* name = aarch64_hint_options[i].name;
8494 checked_hash_insert (aarch64_hint_opt_hsh, name,
8495 (void *) (aarch64_hint_options + i));
8496 /* Also hash the name in the upper case. */
8497 checked_hash_insert (aarch64_pldop_hsh, get_upper_str (name),
8498 (void *) (aarch64_hint_options + i));
8501 /* Set the cpu variant based on the command-line options. */
8503 mcpu_cpu_opt = march_cpu_opt;
8506 mcpu_cpu_opt = &cpu_default;
8508 cpu_variant = *mcpu_cpu_opt;
8510 /* Record the CPU type. */
8511 mach = ilp32_p ? bfd_mach_aarch64_ilp32 : bfd_mach_aarch64;
8513 bfd_set_arch_mach (stdoutput, TARGET_ARCH, mach);
8516 /* Command line processing. */
8518 const char *md_shortopts = "m:";
8520 #ifdef AARCH64_BI_ENDIAN
8521 #define OPTION_EB (OPTION_MD_BASE + 0)
8522 #define OPTION_EL (OPTION_MD_BASE + 1)
8524 #if TARGET_BYTES_BIG_ENDIAN
8525 #define OPTION_EB (OPTION_MD_BASE + 0)
8527 #define OPTION_EL (OPTION_MD_BASE + 1)
8531 struct option md_longopts[] = {
8533 {"EB", no_argument, NULL, OPTION_EB},
8536 {"EL", no_argument, NULL, OPTION_EL},
8538 {NULL, no_argument, NULL, 0}
8541 size_t md_longopts_size = sizeof (md_longopts);
8543 struct aarch64_option_table
8545 const char *option; /* Option name to match. */
8546 const char *help; /* Help information. */
8547 int *var; /* Variable to change. */
8548 int value; /* What to change it to. */
8549 char *deprecated; /* If non-null, print this message. */
8552 static struct aarch64_option_table aarch64_opts[] = {
8553 {"mbig-endian", N_("assemble for big-endian"), &target_big_endian, 1, NULL},
8554 {"mlittle-endian", N_("assemble for little-endian"), &target_big_endian, 0,
8556 #ifdef DEBUG_AARCH64
8557 {"mdebug-dump", N_("temporary switch for dumping"), &debug_dump, 1, NULL},
8558 #endif /* DEBUG_AARCH64 */
8559 {"mverbose-error", N_("output verbose error messages"), &verbose_error_p, 1,
8561 {"mno-verbose-error", N_("do not output verbose error messages"),
8562 &verbose_error_p, 0, NULL},
8563 {NULL, NULL, NULL, 0, NULL}
8566 struct aarch64_cpu_option_table
8569 const aarch64_feature_set value;
8570 /* The canonical name of the CPU, or NULL to use NAME converted to upper
8572 const char *canonical_name;
8575 /* This list should, at a minimum, contain all the cpu names
8576 recognized by GCC. */
8577 static const struct aarch64_cpu_option_table aarch64_cpus[] = {
8578 {"all", AARCH64_ANY, NULL},
8579 {"cortex-a35", AARCH64_FEATURE (AARCH64_ARCH_V8,
8580 AARCH64_FEATURE_CRC), "Cortex-A35"},
8581 {"cortex-a53", AARCH64_FEATURE (AARCH64_ARCH_V8,
8582 AARCH64_FEATURE_CRC), "Cortex-A53"},
8583 {"cortex-a57", AARCH64_FEATURE (AARCH64_ARCH_V8,
8584 AARCH64_FEATURE_CRC), "Cortex-A57"},
8585 {"cortex-a72", AARCH64_FEATURE (AARCH64_ARCH_V8,
8586 AARCH64_FEATURE_CRC), "Cortex-A72"},
8587 {"cortex-a73", AARCH64_FEATURE (AARCH64_ARCH_V8,
8588 AARCH64_FEATURE_CRC), "Cortex-A73"},
8589 {"cortex-a55", AARCH64_FEATURE (AARCH64_ARCH_V8_2,
8590 AARCH64_FEATURE_RCPC | AARCH64_FEATURE_F16 | AARCH64_FEATURE_DOTPROD),
8592 {"cortex-a75", AARCH64_FEATURE (AARCH64_ARCH_V8_2,
8593 AARCH64_FEATURE_RCPC | AARCH64_FEATURE_F16 | AARCH64_FEATURE_DOTPROD),
8595 {"exynos-m1", AARCH64_FEATURE (AARCH64_ARCH_V8,
8596 AARCH64_FEATURE_CRC | AARCH64_FEATURE_CRYPTO),
8597 "Samsung Exynos M1"},
8598 {"falkor", AARCH64_FEATURE (AARCH64_ARCH_V8,
8599 AARCH64_FEATURE_CRC | AARCH64_FEATURE_CRYPTO
8600 | AARCH64_FEATURE_RDMA),
8602 {"qdf24xx", AARCH64_FEATURE (AARCH64_ARCH_V8,
8603 AARCH64_FEATURE_CRC | AARCH64_FEATURE_CRYPTO
8604 | AARCH64_FEATURE_RDMA),
8605 "Qualcomm QDF24XX"},
8606 {"saphira", AARCH64_FEATURE (AARCH64_ARCH_V8_4,
8607 AARCH64_FEATURE_CRYPTO | AARCH64_FEATURE_PROFILE),
8608 "Qualcomm Saphira"},
8609 {"thunderx", AARCH64_FEATURE (AARCH64_ARCH_V8,
8610 AARCH64_FEATURE_CRC | AARCH64_FEATURE_CRYPTO),
8612 {"vulcan", AARCH64_FEATURE (AARCH64_ARCH_V8_1,
8613 AARCH64_FEATURE_CRYPTO),
8615 /* The 'xgene-1' name is an older name for 'xgene1', which was used
8616 in earlier releases and is superseded by 'xgene1' in all
8618 {"xgene-1", AARCH64_ARCH_V8, "APM X-Gene 1"},
8619 {"xgene1", AARCH64_ARCH_V8, "APM X-Gene 1"},
8620 {"xgene2", AARCH64_FEATURE (AARCH64_ARCH_V8,
8621 AARCH64_FEATURE_CRC), "APM X-Gene 2"},
8622 {"generic", AARCH64_ARCH_V8, NULL},
8624 {NULL, AARCH64_ARCH_NONE, NULL}
8627 struct aarch64_arch_option_table
8630 const aarch64_feature_set value;
8633 /* This list should, at a minimum, contain all the architecture names
8634 recognized by GCC. */
8635 static const struct aarch64_arch_option_table aarch64_archs[] = {
8636 {"all", AARCH64_ANY},
8637 {"armv8-a", AARCH64_ARCH_V8},
8638 {"armv8.1-a", AARCH64_ARCH_V8_1},
8639 {"armv8.2-a", AARCH64_ARCH_V8_2},
8640 {"armv8.3-a", AARCH64_ARCH_V8_3},
8641 {"armv8.4-a", AARCH64_ARCH_V8_4},
8642 {NULL, AARCH64_ARCH_NONE}
8645 /* ISA extensions. */
8646 struct aarch64_option_cpu_value_table
8649 const aarch64_feature_set value;
8650 const aarch64_feature_set require; /* Feature dependencies. */
8653 static const struct aarch64_option_cpu_value_table aarch64_features[] = {
8654 {"crc", AARCH64_FEATURE (AARCH64_FEATURE_CRC, 0),
8656 {"crypto", AARCH64_FEATURE (AARCH64_FEATURE_CRYPTO
8657 | AARCH64_FEATURE_AES
8658 | AARCH64_FEATURE_SHA2, 0),
8659 AARCH64_FEATURE (AARCH64_FEATURE_SIMD, 0)},
8660 {"fp", AARCH64_FEATURE (AARCH64_FEATURE_FP, 0),
8662 {"lse", AARCH64_FEATURE (AARCH64_FEATURE_LSE, 0),
8664 {"simd", AARCH64_FEATURE (AARCH64_FEATURE_SIMD, 0),
8665 AARCH64_FEATURE (AARCH64_FEATURE_FP, 0)},
8666 {"pan", AARCH64_FEATURE (AARCH64_FEATURE_PAN, 0),
8668 {"lor", AARCH64_FEATURE (AARCH64_FEATURE_LOR, 0),
8670 {"ras", AARCH64_FEATURE (AARCH64_FEATURE_RAS, 0),
8672 {"rdma", AARCH64_FEATURE (AARCH64_FEATURE_RDMA, 0),
8673 AARCH64_FEATURE (AARCH64_FEATURE_SIMD, 0)},
8674 {"fp16", AARCH64_FEATURE (AARCH64_FEATURE_F16, 0),
8675 AARCH64_FEATURE (AARCH64_FEATURE_FP, 0)},
8676 {"fp16fml", AARCH64_FEATURE (AARCH64_FEATURE_F16_FML, 0),
8677 AARCH64_FEATURE (AARCH64_FEATURE_FP
8678 | AARCH64_FEATURE_F16, 0)},
8679 {"profile", AARCH64_FEATURE (AARCH64_FEATURE_PROFILE, 0),
8681 {"sve", AARCH64_FEATURE (AARCH64_FEATURE_SVE, 0),
8682 AARCH64_FEATURE (AARCH64_FEATURE_F16
8683 | AARCH64_FEATURE_SIMD
8684 | AARCH64_FEATURE_COMPNUM, 0)},
8685 {"compnum", AARCH64_FEATURE (AARCH64_FEATURE_COMPNUM, 0),
8686 AARCH64_FEATURE (AARCH64_FEATURE_F16
8687 | AARCH64_FEATURE_SIMD, 0)},
8688 {"rcpc", AARCH64_FEATURE (AARCH64_FEATURE_RCPC, 0),
8690 {"dotprod", AARCH64_FEATURE (AARCH64_FEATURE_DOTPROD, 0),
8692 {"sha2", AARCH64_FEATURE (AARCH64_FEATURE_SHA2, 0),
8694 {"aes", AARCH64_FEATURE (AARCH64_FEATURE_AES, 0),
8696 {"sm4", AARCH64_FEATURE (AARCH64_FEATURE_SM4, 0),
8698 {"sha3", AARCH64_FEATURE (AARCH64_FEATURE_SHA2
8699 | AARCH64_FEATURE_SHA3, 0),
8701 {NULL, AARCH64_ARCH_NONE, AARCH64_ARCH_NONE},
8704 struct aarch64_long_option_table
8706 const char *option; /* Substring to match. */
8707 const char *help; /* Help information. */
8708 int (*func) (const char *subopt); /* Function to decode sub-option. */
8709 char *deprecated; /* If non-null, print this message. */
8712 /* Transitive closure of features depending on set. */
8713 static aarch64_feature_set
8714 aarch64_feature_disable_set (aarch64_feature_set set)
8716 const struct aarch64_option_cpu_value_table *opt;
8717 aarch64_feature_set prev = 0;
8719 while (prev != set) {
8721 for (opt = aarch64_features; opt->name != NULL; opt++)
8722 if (AARCH64_CPU_HAS_ANY_FEATURES (opt->require, set))
8723 AARCH64_MERGE_FEATURE_SETS (set, set, opt->value);
8728 /* Transitive closure of dependencies of set. */
8729 static aarch64_feature_set
8730 aarch64_feature_enable_set (aarch64_feature_set set)
8732 const struct aarch64_option_cpu_value_table *opt;
8733 aarch64_feature_set prev = 0;
8735 while (prev != set) {
8737 for (opt = aarch64_features; opt->name != NULL; opt++)
8738 if (AARCH64_CPU_HAS_FEATURE (set, opt->value))
8739 AARCH64_MERGE_FEATURE_SETS (set, set, opt->require);
8745 aarch64_parse_features (const char *str, const aarch64_feature_set **opt_p,
8746 bfd_boolean ext_only)
8748 /* We insist on extensions being added before being removed. We achieve
8749 this by using the ADDING_VALUE variable to indicate whether we are
8750 adding an extension (1) or removing it (0) and only allowing it to
8751 change in the order -1 -> 1 -> 0. */
8752 int adding_value = -1;
8753 aarch64_feature_set *ext_set = XNEW (aarch64_feature_set);
8755 /* Copy the feature set, so that we can modify it. */
8759 while (str != NULL && *str != 0)
8761 const struct aarch64_option_cpu_value_table *opt;
8762 const char *ext = NULL;
8769 as_bad (_("invalid architectural extension"));
8773 ext = strchr (++str, '+');
8779 optlen = strlen (str);
8781 if (optlen >= 2 && strncmp (str, "no", 2) == 0)
8783 if (adding_value != 0)
8788 else if (optlen > 0)
8790 if (adding_value == -1)
8792 else if (adding_value != 1)
8794 as_bad (_("must specify extensions to add before specifying "
8795 "those to remove"));
8802 as_bad (_("missing architectural extension"));
8806 gas_assert (adding_value != -1);
8808 for (opt = aarch64_features; opt->name != NULL; opt++)
8809 if (strncmp (opt->name, str, optlen) == 0)
8811 aarch64_feature_set set;
8813 /* Add or remove the extension. */
8816 set = aarch64_feature_enable_set (opt->value);
8817 AARCH64_MERGE_FEATURE_SETS (*ext_set, *ext_set, set);
8821 set = aarch64_feature_disable_set (opt->value);
8822 AARCH64_CLEAR_FEATURE (*ext_set, *ext_set, set);
8827 if (opt->name == NULL)
8829 as_bad (_("unknown architectural extension `%s'"), str);
8840 aarch64_parse_cpu (const char *str)
8842 const struct aarch64_cpu_option_table *opt;
8843 const char *ext = strchr (str, '+');
8849 optlen = strlen (str);
8853 as_bad (_("missing cpu name `%s'"), str);
8857 for (opt = aarch64_cpus; opt->name != NULL; opt++)
8858 if (strlen (opt->name) == optlen && strncmp (str, opt->name, optlen) == 0)
8860 mcpu_cpu_opt = &opt->value;
8862 return aarch64_parse_features (ext, &mcpu_cpu_opt, FALSE);
8867 as_bad (_("unknown cpu `%s'"), str);
8872 aarch64_parse_arch (const char *str)
8874 const struct aarch64_arch_option_table *opt;
8875 const char *ext = strchr (str, '+');
8881 optlen = strlen (str);
8885 as_bad (_("missing architecture name `%s'"), str);
8889 for (opt = aarch64_archs; opt->name != NULL; opt++)
8890 if (strlen (opt->name) == optlen && strncmp (str, opt->name, optlen) == 0)
8892 march_cpu_opt = &opt->value;
8894 return aarch64_parse_features (ext, &march_cpu_opt, FALSE);
8899 as_bad (_("unknown architecture `%s'\n"), str);
8904 struct aarch64_option_abi_value_table
8907 enum aarch64_abi_type value;
8910 static const struct aarch64_option_abi_value_table aarch64_abis[] = {
8911 {"ilp32", AARCH64_ABI_ILP32},
8912 {"lp64", AARCH64_ABI_LP64},
8916 aarch64_parse_abi (const char *str)
8922 as_bad (_("missing abi name `%s'"), str);
8926 for (i = 0; i < ARRAY_SIZE (aarch64_abis); i++)
8927 if (strcmp (str, aarch64_abis[i].name) == 0)
8929 aarch64_abi = aarch64_abis[i].value;
8933 as_bad (_("unknown abi `%s'\n"), str);
8937 static struct aarch64_long_option_table aarch64_long_opts[] = {
8939 {"mabi=", N_("<abi name>\t specify for ABI <abi name>"),
8940 aarch64_parse_abi, NULL},
8941 #endif /* OBJ_ELF */
8942 {"mcpu=", N_("<cpu name>\t assemble for CPU <cpu name>"),
8943 aarch64_parse_cpu, NULL},
8944 {"march=", N_("<arch name>\t assemble for architecture <arch name>"),
8945 aarch64_parse_arch, NULL},
8946 {NULL, NULL, 0, NULL}
8950 md_parse_option (int c, const char *arg)
8952 struct aarch64_option_table *opt;
8953 struct aarch64_long_option_table *lopt;
8959 target_big_endian = 1;
8965 target_big_endian = 0;
8970 /* Listing option. Just ignore these, we don't support additional
8975 for (opt = aarch64_opts; opt->option != NULL; opt++)
8977 if (c == opt->option[0]
8978 && ((arg == NULL && opt->option[1] == 0)
8979 || streq (arg, opt->option + 1)))
8981 /* If the option is deprecated, tell the user. */
8982 if (opt->deprecated != NULL)
8983 as_tsktsk (_("option `-%c%s' is deprecated: %s"), c,
8984 arg ? arg : "", _(opt->deprecated));
8986 if (opt->var != NULL)
8987 *opt->var = opt->value;
8993 for (lopt = aarch64_long_opts; lopt->option != NULL; lopt++)
8995 /* These options are expected to have an argument. */
8996 if (c == lopt->option[0]
8998 && strncmp (arg, lopt->option + 1,
8999 strlen (lopt->option + 1)) == 0)
9001 /* If the option is deprecated, tell the user. */
9002 if (lopt->deprecated != NULL)
9003 as_tsktsk (_("option `-%c%s' is deprecated: %s"), c, arg,
9004 _(lopt->deprecated));
9006 /* Call the sup-option parser. */
9007 return lopt->func (arg + strlen (lopt->option) - 1);
9018 md_show_usage (FILE * fp)
9020 struct aarch64_option_table *opt;
9021 struct aarch64_long_option_table *lopt;
9023 fprintf (fp, _(" AArch64-specific assembler options:\n"));
9025 for (opt = aarch64_opts; opt->option != NULL; opt++)
9026 if (opt->help != NULL)
9027 fprintf (fp, " -%-23s%s\n", opt->option, _(opt->help));
9029 for (lopt = aarch64_long_opts; lopt->option != NULL; lopt++)
9030 if (lopt->help != NULL)
9031 fprintf (fp, " -%s%s\n", lopt->option, _(lopt->help));
9035 -EB assemble code for a big-endian cpu\n"));
9040 -EL assemble code for a little-endian cpu\n"));
9044 /* Parse a .cpu directive. */
9047 s_aarch64_cpu (int ignored ATTRIBUTE_UNUSED)
9049 const struct aarch64_cpu_option_table *opt;
9055 name = input_line_pointer;
9056 while (*input_line_pointer && !ISSPACE (*input_line_pointer))
9057 input_line_pointer++;
9058 saved_char = *input_line_pointer;
9059 *input_line_pointer = 0;
9061 ext = strchr (name, '+');
9064 optlen = ext - name;
9066 optlen = strlen (name);
9068 /* Skip the first "all" entry. */
9069 for (opt = aarch64_cpus + 1; opt->name != NULL; opt++)
9070 if (strlen (opt->name) == optlen
9071 && strncmp (name, opt->name, optlen) == 0)
9073 mcpu_cpu_opt = &opt->value;
9075 if (!aarch64_parse_features (ext, &mcpu_cpu_opt, FALSE))
9078 cpu_variant = *mcpu_cpu_opt;
9080 *input_line_pointer = saved_char;
9081 demand_empty_rest_of_line ();
9084 as_bad (_("unknown cpu `%s'"), name);
9085 *input_line_pointer = saved_char;
9086 ignore_rest_of_line ();
9090 /* Parse a .arch directive. */
9093 s_aarch64_arch (int ignored ATTRIBUTE_UNUSED)
9095 const struct aarch64_arch_option_table *opt;
9101 name = input_line_pointer;
9102 while (*input_line_pointer && !ISSPACE (*input_line_pointer))
9103 input_line_pointer++;
9104 saved_char = *input_line_pointer;
9105 *input_line_pointer = 0;
9107 ext = strchr (name, '+');
9110 optlen = ext - name;
9112 optlen = strlen (name);
9114 /* Skip the first "all" entry. */
9115 for (opt = aarch64_archs + 1; opt->name != NULL; opt++)
9116 if (strlen (opt->name) == optlen
9117 && strncmp (name, opt->name, optlen) == 0)
9119 mcpu_cpu_opt = &opt->value;
9121 if (!aarch64_parse_features (ext, &mcpu_cpu_opt, FALSE))
9124 cpu_variant = *mcpu_cpu_opt;
9126 *input_line_pointer = saved_char;
9127 demand_empty_rest_of_line ();
9131 as_bad (_("unknown architecture `%s'\n"), name);
9132 *input_line_pointer = saved_char;
9133 ignore_rest_of_line ();
9136 /* Parse a .arch_extension directive. */
9139 s_aarch64_arch_extension (int ignored ATTRIBUTE_UNUSED)
9142 char *ext = input_line_pointer;;
9144 while (*input_line_pointer && !ISSPACE (*input_line_pointer))
9145 input_line_pointer++;
9146 saved_char = *input_line_pointer;
9147 *input_line_pointer = 0;
9149 if (!aarch64_parse_features (ext, &mcpu_cpu_opt, TRUE))
9152 cpu_variant = *mcpu_cpu_opt;
9154 *input_line_pointer = saved_char;
9155 demand_empty_rest_of_line ();
9158 /* Copy symbol information. */
9161 aarch64_copy_symbol_attributes (symbolS * dest, symbolS * src)
9163 AARCH64_GET_FLAG (dest) = AARCH64_GET_FLAG (src);