1 /* AArch64 assembler/disassembler support.
3 Copyright (C) 2009-2015 Free Software Foundation, Inc.
4 Contributed by ARM Ltd.
6 This file is part of GNU Binutils.
8 This program 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 This program 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/>. */
22 #ifndef OPCODE_AARCH64_H
23 #define OPCODE_AARCH64_H
26 #include "bfd_stdint.h"
30 /* The offset for pc-relative addressing is currently defined to be 0. */
31 #define AARCH64_PCREL_OFFSET 0
33 typedef uint32_t aarch64_insn;
35 /* The following bitmasks control CPU features. */
36 #define AARCH64_FEATURE_V8 0x00000001 /* All processors. */
37 #define AARCH64_FEATURE_CRYPTO 0x00010000 /* Crypto instructions. */
38 #define AARCH64_FEATURE_FP 0x00020000 /* FP instructions. */
39 #define AARCH64_FEATURE_SIMD 0x00040000 /* SIMD instructions. */
40 #define AARCH64_FEATURE_CRC 0x00080000 /* CRC instructions. */
41 #define AARCH64_FEATURE_LSE 0x00100000 /* LSE instructions. */
42 #define AARCH64_FEATURE_PAN 0x00200000 /* PAN instructions. */
43 #define AARCH64_FEATURE_LOR 0x00400000 /* LOR instructions. */
45 /* Architectures are the sum of the base and extensions. */
46 #define AARCH64_ARCH_V8 AARCH64_FEATURE (AARCH64_FEATURE_V8, \
48 | AARCH64_FEATURE_SIMD)
49 #define AARCH64_ARCH_NONE AARCH64_FEATURE (0, 0)
50 #define AARCH64_ANY AARCH64_FEATURE (-1, 0) /* Any basic core. */
52 /* CPU-specific features. */
53 typedef unsigned long aarch64_feature_set;
55 #define AARCH64_CPU_HAS_FEATURE(CPU,FEAT) \
56 (((CPU) & (FEAT)) != 0)
58 #define AARCH64_MERGE_FEATURE_SETS(TARG,F1,F2) \
61 (TARG) = (F1) | (F2); \
65 #define AARCH64_CLEAR_FEATURE(TARG,F1,F2) \
68 (TARG) = (F1) &~ (F2); \
72 #define AARCH64_FEATURE(core,coproc) ((core) | (coproc))
74 #define AARCH64_OPCODE_HAS_FEATURE(OPC,FEAT) \
75 (((OPC) & (FEAT)) != 0)
77 enum aarch64_operand_class
79 AARCH64_OPND_CLASS_NIL,
80 AARCH64_OPND_CLASS_INT_REG,
81 AARCH64_OPND_CLASS_MODIFIED_REG,
82 AARCH64_OPND_CLASS_FP_REG,
83 AARCH64_OPND_CLASS_SIMD_REG,
84 AARCH64_OPND_CLASS_SIMD_ELEMENT,
85 AARCH64_OPND_CLASS_SISD_REG,
86 AARCH64_OPND_CLASS_SIMD_REGLIST,
87 AARCH64_OPND_CLASS_CP_REG,
88 AARCH64_OPND_CLASS_ADDRESS,
89 AARCH64_OPND_CLASS_IMMEDIATE,
90 AARCH64_OPND_CLASS_SYSTEM,
91 AARCH64_OPND_CLASS_COND,
94 /* Operand code that helps both parsing and coding.
95 Keep AARCH64_OPERANDS synced. */
99 AARCH64_OPND_NIL, /* no operand---MUST BE FIRST!*/
101 AARCH64_OPND_Rd, /* Integer register as destination. */
102 AARCH64_OPND_Rn, /* Integer register as source. */
103 AARCH64_OPND_Rm, /* Integer register as source. */
104 AARCH64_OPND_Rt, /* Integer register used in ld/st instructions. */
105 AARCH64_OPND_Rt2, /* Integer register used in ld/st pair instructions. */
106 AARCH64_OPND_Rs, /* Integer register used in ld/st exclusive. */
107 AARCH64_OPND_Ra, /* Integer register used in ddp_3src instructions. */
108 AARCH64_OPND_Rt_SYS, /* Integer register used in system instructions. */
110 AARCH64_OPND_Rd_SP, /* Integer Rd or SP. */
111 AARCH64_OPND_Rn_SP, /* Integer Rn or SP. */
112 AARCH64_OPND_PAIRREG, /* Paired register operand. */
113 AARCH64_OPND_Rm_EXT, /* Integer Rm extended. */
114 AARCH64_OPND_Rm_SFT, /* Integer Rm shifted. */
116 AARCH64_OPND_Fd, /* Floating-point Fd. */
117 AARCH64_OPND_Fn, /* Floating-point Fn. */
118 AARCH64_OPND_Fm, /* Floating-point Fm. */
119 AARCH64_OPND_Fa, /* Floating-point Fa. */
120 AARCH64_OPND_Ft, /* Floating-point Ft. */
121 AARCH64_OPND_Ft2, /* Floating-point Ft2. */
123 AARCH64_OPND_Sd, /* AdvSIMD Scalar Sd. */
124 AARCH64_OPND_Sn, /* AdvSIMD Scalar Sn. */
125 AARCH64_OPND_Sm, /* AdvSIMD Scalar Sm. */
127 AARCH64_OPND_Vd, /* AdvSIMD Vector Vd. */
128 AARCH64_OPND_Vn, /* AdvSIMD Vector Vn. */
129 AARCH64_OPND_Vm, /* AdvSIMD Vector Vm. */
130 AARCH64_OPND_VdD1, /* AdvSIMD <Vd>.D[1]; for FMOV only. */
131 AARCH64_OPND_VnD1, /* AdvSIMD <Vn>.D[1]; for FMOV only. */
132 AARCH64_OPND_Ed, /* AdvSIMD Vector Element Vd. */
133 AARCH64_OPND_En, /* AdvSIMD Vector Element Vn. */
134 AARCH64_OPND_Em, /* AdvSIMD Vector Element Vm. */
135 AARCH64_OPND_LVn, /* AdvSIMD Vector register list used in e.g. TBL. */
136 AARCH64_OPND_LVt, /* AdvSIMD Vector register list used in ld/st. */
137 AARCH64_OPND_LVt_AL, /* AdvSIMD Vector register list for loading single
138 structure to all lanes. */
139 AARCH64_OPND_LEt, /* AdvSIMD Vector Element list. */
141 AARCH64_OPND_Cn, /* Co-processor register in CRn field. */
142 AARCH64_OPND_Cm, /* Co-processor register in CRm field. */
144 AARCH64_OPND_IDX, /* AdvSIMD EXT index operand. */
145 AARCH64_OPND_IMM_VLSL,/* Immediate for shifting vector registers left. */
146 AARCH64_OPND_IMM_VLSR,/* Immediate for shifting vector registers right. */
147 AARCH64_OPND_SIMD_IMM,/* AdvSIMD modified immediate without shift. */
148 AARCH64_OPND_SIMD_IMM_SFT, /* AdvSIMD modified immediate with shift. */
149 AARCH64_OPND_SIMD_FPIMM,/* AdvSIMD 8-bit fp immediate. */
150 AARCH64_OPND_SHLL_IMM,/* Immediate shift for AdvSIMD SHLL instruction
152 AARCH64_OPND_IMM0, /* Immediate for #0. */
153 AARCH64_OPND_FPIMM0, /* Immediate for #0.0. */
154 AARCH64_OPND_FPIMM, /* Floating-point Immediate. */
155 AARCH64_OPND_IMMR, /* Immediate #<immr> in e.g. BFM. */
156 AARCH64_OPND_IMMS, /* Immediate #<imms> in e.g. BFM. */
157 AARCH64_OPND_WIDTH, /* Immediate #<width> in e.g. BFI. */
158 AARCH64_OPND_IMM, /* Immediate. */
159 AARCH64_OPND_UIMM3_OP1,/* Unsigned 3-bit immediate in the op1 field. */
160 AARCH64_OPND_UIMM3_OP2,/* Unsigned 3-bit immediate in the op2 field. */
161 AARCH64_OPND_UIMM4, /* Unsigned 4-bit immediate in the CRm field. */
162 AARCH64_OPND_UIMM7, /* Unsigned 7-bit immediate in the CRm:op2 fields. */
163 AARCH64_OPND_BIT_NUM, /* Immediate. */
164 AARCH64_OPND_EXCEPTION,/* imm16 operand in exception instructions. */
165 AARCH64_OPND_CCMP_IMM,/* Immediate in conditional compare instructions. */
166 AARCH64_OPND_NZCV, /* Flag bit specifier giving an alternative value for
167 each condition flag. */
169 AARCH64_OPND_LIMM, /* Logical Immediate. */
170 AARCH64_OPND_AIMM, /* Arithmetic immediate. */
171 AARCH64_OPND_HALF, /* #<imm16>{, LSL #<shift>} operand in move wide. */
172 AARCH64_OPND_FBITS, /* FP #<fbits> operand in e.g. SCVTF */
173 AARCH64_OPND_IMM_MOV, /* Immediate operand for the MOV alias. */
175 AARCH64_OPND_COND, /* Standard condition as the last operand. */
176 AARCH64_OPND_COND1, /* Same as the above, but excluding AL and NV. */
178 AARCH64_OPND_ADDR_ADRP, /* Memory address for ADRP */
179 AARCH64_OPND_ADDR_PCREL14, /* 14-bit PC-relative address for e.g. TBZ. */
180 AARCH64_OPND_ADDR_PCREL19, /* 19-bit PC-relative address for e.g. LDR. */
181 AARCH64_OPND_ADDR_PCREL21, /* 21-bit PC-relative address for e.g. ADR. */
182 AARCH64_OPND_ADDR_PCREL26, /* 26-bit PC-relative address for e.g. BL. */
184 AARCH64_OPND_ADDR_SIMPLE, /* Address of ld/st exclusive. */
185 AARCH64_OPND_ADDR_REGOFF, /* Address of register offset. */
186 AARCH64_OPND_ADDR_SIMM7, /* Address of signed 7-bit immediate. */
187 AARCH64_OPND_ADDR_SIMM9, /* Address of signed 9-bit immediate. */
188 AARCH64_OPND_ADDR_SIMM9_2, /* Same as the above, but the immediate is
189 negative or unaligned and there is
190 no writeback allowed. This operand code
191 is only used to support the programmer-
192 friendly feature of using LDR/STR as the
193 the mnemonic name for LDUR/STUR instructions
194 wherever there is no ambiguity. */
195 AARCH64_OPND_ADDR_UIMM12, /* Address of unsigned 12-bit immediate. */
196 AARCH64_OPND_SIMD_ADDR_SIMPLE,/* Address of ld/st multiple structures. */
197 AARCH64_OPND_SIMD_ADDR_POST, /* Address of ld/st multiple post-indexed. */
199 AARCH64_OPND_SYSREG, /* System register operand. */
200 AARCH64_OPND_PSTATEFIELD, /* PSTATE field name operand. */
201 AARCH64_OPND_SYSREG_AT, /* System register <at_op> operand. */
202 AARCH64_OPND_SYSREG_DC, /* System register <dc_op> operand. */
203 AARCH64_OPND_SYSREG_IC, /* System register <ic_op> operand. */
204 AARCH64_OPND_SYSREG_TLBI, /* System register <tlbi_op> operand. */
205 AARCH64_OPND_BARRIER, /* Barrier operand. */
206 AARCH64_OPND_BARRIER_ISB, /* Barrier operand for ISB. */
207 AARCH64_OPND_PRFOP, /* Prefetch operation. */
210 /* Qualifier constrains an operand. It either specifies a variant of an
211 operand type or limits values available to an operand type.
213 N.B. Order is important; keep aarch64_opnd_qualifiers synced. */
215 enum aarch64_opnd_qualifier
217 /* Indicating no further qualification on an operand. */
218 AARCH64_OPND_QLF_NIL,
220 /* Qualifying an operand which is a general purpose (integer) register;
221 indicating the operand data size or a specific register. */
222 AARCH64_OPND_QLF_W, /* Wn, WZR or WSP. */
223 AARCH64_OPND_QLF_X, /* Xn, XZR or XSP. */
224 AARCH64_OPND_QLF_WSP, /* WSP. */
225 AARCH64_OPND_QLF_SP, /* SP. */
227 /* Qualifying an operand which is a floating-point register, a SIMD
228 vector element or a SIMD vector element list; indicating operand data
229 size or the size of each SIMD vector element in the case of a SIMD
231 These qualifiers are also used to qualify an address operand to
232 indicate the size of data element a load/store instruction is
234 They are also used for the immediate shift operand in e.g. SSHR. Such
235 a use is only for the ease of operand encoding/decoding and qualifier
236 sequence matching; such a use should not be applied widely; use the value
237 constraint qualifiers for immediate operands wherever possible. */
238 AARCH64_OPND_QLF_S_B,
239 AARCH64_OPND_QLF_S_H,
240 AARCH64_OPND_QLF_S_S,
241 AARCH64_OPND_QLF_S_D,
242 AARCH64_OPND_QLF_S_Q,
244 /* Qualifying an operand which is a SIMD vector register or a SIMD vector
245 register list; indicating register shape.
246 They are also used for the immediate shift operand in e.g. SSHR. Such
247 a use is only for the ease of operand encoding/decoding and qualifier
248 sequence matching; such a use should not be applied widely; use the value
249 constraint qualifiers for immediate operands wherever possible. */
250 AARCH64_OPND_QLF_V_8B,
251 AARCH64_OPND_QLF_V_16B,
252 AARCH64_OPND_QLF_V_4H,
253 AARCH64_OPND_QLF_V_8H,
254 AARCH64_OPND_QLF_V_2S,
255 AARCH64_OPND_QLF_V_4S,
256 AARCH64_OPND_QLF_V_1D,
257 AARCH64_OPND_QLF_V_2D,
258 AARCH64_OPND_QLF_V_1Q,
260 /* Constraint on value. */
261 AARCH64_OPND_QLF_imm_0_7,
262 AARCH64_OPND_QLF_imm_0_15,
263 AARCH64_OPND_QLF_imm_0_31,
264 AARCH64_OPND_QLF_imm_0_63,
265 AARCH64_OPND_QLF_imm_1_32,
266 AARCH64_OPND_QLF_imm_1_64,
268 /* Indicate whether an AdvSIMD modified immediate operand is shift-zeros
270 AARCH64_OPND_QLF_LSL,
271 AARCH64_OPND_QLF_MSL,
273 /* Special qualifier helping retrieve qualifier information during the
274 decoding time (currently not in use). */
275 AARCH64_OPND_QLF_RETRIEVE,
278 /* Instruction class. */
280 enum aarch64_insn_class
335 ldst_imm9, /* immpost or immpre */
354 /* Opcode enumerators. */
398 OP_MOV_IMM_LOG, /* MOV alias for moving bitmask immediate. */
399 OP_MOV_IMM_WIDE, /* MOV alias for moving wide immediate. */
400 OP_MOV_IMM_WIDEN, /* MOV alias for moving wide immediate (negated). */
402 OP_MOV_V, /* MOV alias for moving vector register. */
431 OP_FCVTXN_S, /* Scalar version. */
440 OP_TOTAL_NUM, /* Pseudo. */
443 /* Maximum number of operands an instruction can have. */
444 #define AARCH64_MAX_OPND_NUM 6
445 /* Maximum number of qualifier sequences an instruction can have. */
446 #define AARCH64_MAX_QLF_SEQ_NUM 10
447 /* Operand qualifier typedef; optimized for the size. */
448 typedef unsigned char aarch64_opnd_qualifier_t;
449 /* Operand qualifier sequence typedef. */
450 typedef aarch64_opnd_qualifier_t \
451 aarch64_opnd_qualifier_seq_t [AARCH64_MAX_OPND_NUM];
453 /* FIXME: improve the efficiency. */
454 static inline bfd_boolean
455 empty_qualifier_sequence_p (const aarch64_opnd_qualifier_t *qualifiers)
458 for (i = 0; i < AARCH64_MAX_OPND_NUM; ++i)
459 if (qualifiers[i] != AARCH64_OPND_QLF_NIL)
464 /* This structure holds information for a particular opcode. */
466 struct aarch64_opcode
468 /* The name of the mnemonic. */
471 /* The opcode itself. Those bits which will be filled in with
472 operands are zeroes. */
475 /* The opcode mask. This is used by the disassembler. This is a
476 mask containing ones indicating those bits which must match the
477 opcode field, and zeroes indicating those bits which need not
478 match (and are presumably filled in by operands). */
481 /* Instruction class. */
482 enum aarch64_insn_class iclass;
484 /* Enumerator identifier. */
487 /* Which architecture variant provides this instruction. */
488 const aarch64_feature_set *avariant;
490 /* An array of operand codes. Each code is an index into the
491 operand table. They appear in the order which the operands must
492 appear in assembly code, and are terminated by a zero. */
493 enum aarch64_opnd operands[AARCH64_MAX_OPND_NUM];
495 /* A list of operand qualifier code sequence. Each operand qualifier
496 code qualifies the corresponding operand code. Each operand
497 qualifier sequence specifies a valid opcode variant and related
498 constraint on operands. */
499 aarch64_opnd_qualifier_seq_t qualifiers_list[AARCH64_MAX_QLF_SEQ_NUM];
501 /* Flags providing information about this instruction */
505 typedef struct aarch64_opcode aarch64_opcode;
507 /* Table describing all the AArch64 opcodes. */
508 extern aarch64_opcode aarch64_opcode_table[];
511 #define F_ALIAS (1 << 0)
512 #define F_HAS_ALIAS (1 << 1)
513 /* Disassembly preference priority 1-3 (the larger the higher). If nothing
514 is specified, it is the priority 0 by default, i.e. the lowest priority. */
515 #define F_P1 (1 << 2)
516 #define F_P2 (2 << 2)
517 #define F_P3 (3 << 2)
518 /* Flag an instruction that is truly conditional executed, e.g. b.cond. */
519 #define F_COND (1 << 4)
520 /* Instruction has the field of 'sf'. */
521 #define F_SF (1 << 5)
522 /* Instruction has the field of 'size:Q'. */
523 #define F_SIZEQ (1 << 6)
524 /* Floating-point instruction has the field of 'type'. */
525 #define F_FPTYPE (1 << 7)
526 /* AdvSIMD scalar instruction has the field of 'size'. */
527 #define F_SSIZE (1 << 8)
528 /* AdvSIMD vector register arrangement specifier encoded in "imm5<3:0>:Q". */
530 /* Size of GPR operand in AdvSIMD instructions encoded in Q. */
531 #define F_GPRSIZE_IN_Q (1 << 10)
532 /* Size of Rt load signed instruction encoded in opc[0], i.e. bit 22. */
533 #define F_LDS_SIZE (1 << 11)
534 /* Optional operand; assume maximum of 1 operand can be optional. */
535 #define F_OPD0_OPT (1 << 12)
536 #define F_OPD1_OPT (2 << 12)
537 #define F_OPD2_OPT (3 << 12)
538 #define F_OPD3_OPT (4 << 12)
539 #define F_OPD4_OPT (5 << 12)
540 /* Default value for the optional operand when omitted from the assembly. */
541 #define F_DEFAULT(X) (((X) & 0x1f) << 15)
542 /* Instruction that is an alias of another instruction needs to be
543 encoded/decoded by converting it to/from the real form, followed by
544 the encoding/decoding according to the rules of the real opcode.
545 This compares to the direct coding using the alias's information.
546 N.B. this flag requires F_ALIAS to be used together. */
547 #define F_CONV (1 << 20)
548 /* Use together with F_ALIAS to indicate an alias opcode is a programmer
549 friendly pseudo instruction available only in the assembly code (thus will
550 not show up in the disassembly). */
551 #define F_PSEUDO (1 << 21)
552 /* Instruction has miscellaneous encoding/decoding rules. */
553 #define F_MISC (1 << 22)
554 /* Instruction has the field of 'N'; used in conjunction with F_SF. */
555 #define F_N (1 << 23)
556 /* Opcode dependent field. */
557 #define F_OD(X) (((X) & 0x7) << 24)
558 /* Instruction has the field of 'sz'. */
559 #define F_LSE_SZ (1 << 27)
560 /* Next bit is 28. */
562 static inline bfd_boolean
563 alias_opcode_p (const aarch64_opcode *opcode)
565 return (opcode->flags & F_ALIAS) ? TRUE : FALSE;
568 static inline bfd_boolean
569 opcode_has_alias (const aarch64_opcode *opcode)
571 return (opcode->flags & F_HAS_ALIAS) ? TRUE : FALSE;
574 /* Priority for disassembling preference. */
576 opcode_priority (const aarch64_opcode *opcode)
578 return (opcode->flags >> 2) & 0x3;
581 static inline bfd_boolean
582 pseudo_opcode_p (const aarch64_opcode *opcode)
584 return (opcode->flags & F_PSEUDO) != 0lu ? TRUE : FALSE;
587 static inline bfd_boolean
588 optional_operand_p (const aarch64_opcode *opcode, unsigned int idx)
590 return (((opcode->flags >> 12) & 0x7) == idx + 1)
594 static inline aarch64_insn
595 get_optional_operand_default_value (const aarch64_opcode *opcode)
597 return (opcode->flags >> 15) & 0x1f;
600 static inline unsigned int
601 get_opcode_dependent_value (const aarch64_opcode *opcode)
603 return (opcode->flags >> 24) & 0x7;
606 static inline bfd_boolean
607 opcode_has_special_coder (const aarch64_opcode *opcode)
609 return (opcode->flags & (F_SF | F_LSE_SZ | F_SIZEQ | F_FPTYPE | F_SSIZE | F_T
610 | F_GPRSIZE_IN_Q | F_LDS_SIZE | F_MISC | F_N | F_COND)) ? TRUE
614 struct aarch64_name_value_pair
620 extern const struct aarch64_name_value_pair aarch64_operand_modifiers [];
621 extern const struct aarch64_name_value_pair aarch64_barrier_options [16];
622 extern const struct aarch64_name_value_pair aarch64_prfops [32];
631 extern const aarch64_sys_reg aarch64_sys_regs [];
632 extern const aarch64_sys_reg aarch64_pstatefields [];
633 extern bfd_boolean aarch64_sys_reg_deprecated_p (const aarch64_sys_reg *);
634 extern bfd_boolean aarch64_sys_reg_supported_p (const aarch64_feature_set,
635 const aarch64_sys_reg *);
636 extern bfd_boolean aarch64_pstatefield_supported_p (const aarch64_feature_set,
637 const aarch64_sys_reg *);
641 const char *template;
644 } aarch64_sys_ins_reg;
646 extern const aarch64_sys_ins_reg aarch64_sys_regs_ic [];
647 extern const aarch64_sys_ins_reg aarch64_sys_regs_dc [];
648 extern const aarch64_sys_ins_reg aarch64_sys_regs_at [];
649 extern const aarch64_sys_ins_reg aarch64_sys_regs_tlbi [];
651 /* Shift/extending operator kinds.
652 N.B. order is important; keep aarch64_operand_modifiers synced. */
653 enum aarch64_modifier_kind
672 aarch64_extend_operator_p (enum aarch64_modifier_kind);
674 enum aarch64_modifier_kind
675 aarch64_get_operand_modifier (const struct aarch64_name_value_pair *);
680 /* A list of names with the first one as the disassembly preference;
681 terminated by NULL if fewer than 3. */
682 const char *names[3];
686 extern const aarch64_cond aarch64_conds[16];
688 const aarch64_cond* get_cond_from_value (aarch64_insn value);
689 const aarch64_cond* get_inverted_cond (const aarch64_cond *cond);
691 /* Structure representing an operand. */
693 struct aarch64_opnd_info
695 enum aarch64_opnd type;
696 aarch64_opnd_qualifier_t qualifier;
713 unsigned first_regno : 5;
714 unsigned num_regs : 3;
715 /* 1 if it is a list of reg element. */
716 unsigned has_index : 1;
717 /* Lane index; valid only when has_index is 1. */
720 /* e.g. immediate or pc relative address offset. */
726 /* e.g. address in STR (register offset). */
739 unsigned pcrel : 1; /* PC-relative. */
740 unsigned writeback : 1;
741 unsigned preind : 1; /* Pre-indexed. */
742 unsigned postind : 1; /* Post-indexed. */
744 const aarch64_cond *cond;
745 /* The encoding of the system register. */
747 /* The encoding of the PSTATE field. */
748 aarch64_insn pstatefield;
749 const aarch64_sys_ins_reg *sysins_op;
750 const struct aarch64_name_value_pair *barrier;
751 const struct aarch64_name_value_pair *prfop;
754 /* Operand shifter; in use when the operand is a register offset address,
755 add/sub extended reg, etc. e.g. <R><m>{, <extend> {#<amount>}}. */
758 enum aarch64_modifier_kind kind;
760 unsigned operator_present: 1; /* Only valid during encoding. */
761 /* Value of the 'S' field in ld/st reg offset; used only in decoding. */
762 unsigned amount_present: 1;
765 unsigned skip:1; /* Operand is not completed if there is a fixup needed
766 to be done on it. In some (but not all) of these
767 cases, we need to tell libopcodes to skip the
768 constraint checking and the encoding for this
769 operand, so that the libopcodes can pick up the
770 right opcode before the operand is fixed-up. This
771 flag should only be used during the
772 assembling/encoding. */
773 unsigned present:1; /* Whether this operand is present in the assembly
774 line; not used during the disassembly. */
777 typedef struct aarch64_opnd_info aarch64_opnd_info;
779 /* Structure representing an instruction.
781 It is used during both the assembling and disassembling. The assembler
782 fills an aarch64_inst after a successful parsing and then passes it to the
783 encoding routine to do the encoding. During the disassembling, the
784 disassembler calls the decoding routine to decode a binary instruction; on a
785 successful return, such a structure will be filled with information of the
786 instruction; then the disassembler uses the information to print out the
791 /* The value of the binary instruction. */
794 /* Corresponding opcode entry. */
795 const aarch64_opcode *opcode;
797 /* Condition for a truly conditional-executed instrutions, e.g. b.cond. */
798 const aarch64_cond *cond;
800 /* Operands information. */
801 aarch64_opnd_info operands[AARCH64_MAX_OPND_NUM];
804 typedef struct aarch64_inst aarch64_inst;
806 /* Diagnosis related declaration and interface. */
808 /* Operand error kind enumerators.
810 AARCH64_OPDE_RECOVERABLE
811 Less severe error found during the parsing, very possibly because that
812 GAS has picked up a wrong instruction template for the parsing.
814 AARCH64_OPDE_SYNTAX_ERROR
815 General syntax error; it can be either a user error, or simply because
816 that GAS is trying a wrong instruction template.
818 AARCH64_OPDE_FATAL_SYNTAX_ERROR
819 Definitely a user syntax error.
821 AARCH64_OPDE_INVALID_VARIANT
822 No syntax error, but the operands are not a valid combination, e.g.
825 AARCH64_OPDE_OUT_OF_RANGE
826 Error about some immediate value out of a valid range.
828 AARCH64_OPDE_UNALIGNED
829 Error about some immediate value not properly aligned (i.e. not being a
830 multiple times of a certain value).
832 AARCH64_OPDE_REG_LIST
833 Error about the register list operand having unexpected number of
836 AARCH64_OPDE_OTHER_ERROR
837 Error of the highest severity and used for any severe issue that does not
838 fall into any of the above categories.
840 The enumerators are only interesting to GAS. They are declared here (in
841 libopcodes) because that some errors are detected (and then notified to GAS)
842 by libopcodes (rather than by GAS solely).
844 The first three errors are only deteced by GAS while the
845 AARCH64_OPDE_INVALID_VARIANT error can only be spotted by libopcodes as
846 only libopcodes has the information about the valid variants of each
849 The enumerators have an increasing severity. This is helpful when there are
850 multiple instruction templates available for a given mnemonic name (e.g.
851 FMOV); this mechanism will help choose the most suitable template from which
852 the generated diagnostics can most closely describe the issues, if any. */
854 enum aarch64_operand_error_kind
857 AARCH64_OPDE_RECOVERABLE,
858 AARCH64_OPDE_SYNTAX_ERROR,
859 AARCH64_OPDE_FATAL_SYNTAX_ERROR,
860 AARCH64_OPDE_INVALID_VARIANT,
861 AARCH64_OPDE_OUT_OF_RANGE,
862 AARCH64_OPDE_UNALIGNED,
863 AARCH64_OPDE_REG_LIST,
864 AARCH64_OPDE_OTHER_ERROR
867 /* N.B. GAS assumes that this structure work well with shallow copy. */
868 struct aarch64_operand_error
870 enum aarch64_operand_error_kind kind;
873 int data[3]; /* Some data for extra information. */
876 typedef struct aarch64_operand_error aarch64_operand_error;
878 /* Encoding entrypoint. */
881 aarch64_opcode_encode (const aarch64_opcode *, const aarch64_inst *,
882 aarch64_insn *, aarch64_opnd_qualifier_t *,
883 aarch64_operand_error *);
885 extern const aarch64_opcode *
886 aarch64_replace_opcode (struct aarch64_inst *,
887 const aarch64_opcode *);
889 /* Given the opcode enumerator OP, return the pointer to the corresponding
892 extern const aarch64_opcode *
893 aarch64_get_opcode (enum aarch64_op);
895 /* Generate the string representation of an operand. */
897 aarch64_print_operand (char *, size_t, bfd_vma, const aarch64_opcode *,
898 const aarch64_opnd_info *, int, int *, bfd_vma *);
900 /* Miscellaneous interface. */
903 aarch64_operand_index (const enum aarch64_opnd *, enum aarch64_opnd);
905 extern aarch64_opnd_qualifier_t
906 aarch64_get_expected_qualifier (const aarch64_opnd_qualifier_seq_t *, int,
907 const aarch64_opnd_qualifier_t, int);
910 aarch64_num_of_operands (const aarch64_opcode *);
913 aarch64_stack_pointer_p (const aarch64_opnd_info *);
916 int aarch64_zero_register_p (const aarch64_opnd_info *);
918 /* Given an operand qualifier, return the expected data element size
919 of a qualified operand. */
921 aarch64_get_qualifier_esize (aarch64_opnd_qualifier_t);
923 extern enum aarch64_operand_class
924 aarch64_get_operand_class (enum aarch64_opnd);
927 aarch64_get_operand_name (enum aarch64_opnd);
930 aarch64_get_operand_desc (enum aarch64_opnd);
933 extern int debug_dump;
936 aarch64_verbose (const char *, ...) __attribute__ ((format (printf, 1, 2)));
938 #define DEBUG_TRACE(M, ...) \
941 aarch64_verbose ("%s: " M ".", __func__, ##__VA_ARGS__); \
944 #define DEBUG_TRACE_IF(C, M, ...) \
946 if (debug_dump && (C)) \
947 aarch64_verbose ("%s: " M ".", __func__, ##__VA_ARGS__); \
949 #else /* !DEBUG_AARCH64 */
950 #define DEBUG_TRACE(M, ...) ;
951 #define DEBUG_TRACE_IF(C, M, ...) ;
952 #endif /* DEBUG_AARCH64 */
954 #endif /* OPCODE_AARCH64_H */