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"
34 /* The offset for pc-relative addressing is currently defined to be 0. */
35 #define AARCH64_PCREL_OFFSET 0
37 typedef uint32_t aarch64_insn;
39 /* The following bitmasks control CPU features. */
40 #define AARCH64_FEATURE_V8 0x00000001 /* All processors. */
41 #define AARCH64_FEATURE_V8_2 0x00000020 /* ARMv8.2 processors. */
42 #define AARCH64_FEATURE_CRYPTO 0x00010000 /* Crypto instructions. */
43 #define AARCH64_FEATURE_FP 0x00020000 /* FP instructions. */
44 #define AARCH64_FEATURE_SIMD 0x00040000 /* SIMD instructions. */
45 #define AARCH64_FEATURE_CRC 0x00080000 /* CRC instructions. */
46 #define AARCH64_FEATURE_LSE 0x00100000 /* LSE instructions. */
47 #define AARCH64_FEATURE_PAN 0x00200000 /* PAN instructions. */
48 #define AARCH64_FEATURE_LOR 0x00400000 /* LOR instructions. */
49 #define AARCH64_FEATURE_RDMA 0x00800000 /* v8.1 SIMD instructions. */
51 /* Architectures are the sum of the base and extensions. */
52 #define AARCH64_ARCH_V8 AARCH64_FEATURE (AARCH64_FEATURE_V8, \
54 | AARCH64_FEATURE_SIMD)
55 #define AARCH64_ARCH_V8_1 AARCH64_FEATURE (AARCH64_FEATURE_V8, \
57 | AARCH64_FEATURE_SIMD \
58 | AARCH64_FEATURE_LSE \
59 | AARCH64_FEATURE_PAN \
60 | AARCH64_FEATURE_LOR \
61 | AARCH64_FEATURE_RDMA)
62 #define AARCH64_ARCH_V8_2 AARCH64_FEATURE (AARCH64_FEATURE_V8, \
63 AARCH64_FEATURE_V8_2 \
64 | AARCH64_FEATURE_FP \
65 | AARCH64_FEATURE_SIMD \
66 | AARCH64_FEATURE_LSE \
67 | AARCH64_FEATURE_PAN \
68 | AARCH64_FEATURE_LOR \
69 | AARCH64_FEATURE_RDMA)
71 #define AARCH64_ARCH_NONE AARCH64_FEATURE (0, 0)
72 #define AARCH64_ANY AARCH64_FEATURE (-1, 0) /* Any basic core. */
74 /* CPU-specific features. */
75 typedef unsigned long aarch64_feature_set;
77 #define AARCH64_CPU_HAS_FEATURE(CPU,FEAT) \
78 (((CPU) & (FEAT)) != 0)
80 #define AARCH64_MERGE_FEATURE_SETS(TARG,F1,F2) \
83 (TARG) = (F1) | (F2); \
87 #define AARCH64_CLEAR_FEATURE(TARG,F1,F2) \
90 (TARG) = (F1) &~ (F2); \
94 #define AARCH64_FEATURE(core,coproc) ((core) | (coproc))
96 #define AARCH64_OPCODE_HAS_FEATURE(OPC,FEAT) \
97 (((OPC) & (FEAT)) != 0)
99 enum aarch64_operand_class
101 AARCH64_OPND_CLASS_NIL,
102 AARCH64_OPND_CLASS_INT_REG,
103 AARCH64_OPND_CLASS_MODIFIED_REG,
104 AARCH64_OPND_CLASS_FP_REG,
105 AARCH64_OPND_CLASS_SIMD_REG,
106 AARCH64_OPND_CLASS_SIMD_ELEMENT,
107 AARCH64_OPND_CLASS_SISD_REG,
108 AARCH64_OPND_CLASS_SIMD_REGLIST,
109 AARCH64_OPND_CLASS_CP_REG,
110 AARCH64_OPND_CLASS_ADDRESS,
111 AARCH64_OPND_CLASS_IMMEDIATE,
112 AARCH64_OPND_CLASS_SYSTEM,
113 AARCH64_OPND_CLASS_COND,
116 /* Operand code that helps both parsing and coding.
117 Keep AARCH64_OPERANDS synced. */
121 AARCH64_OPND_NIL, /* no operand---MUST BE FIRST!*/
123 AARCH64_OPND_Rd, /* Integer register as destination. */
124 AARCH64_OPND_Rn, /* Integer register as source. */
125 AARCH64_OPND_Rm, /* Integer register as source. */
126 AARCH64_OPND_Rt, /* Integer register used in ld/st instructions. */
127 AARCH64_OPND_Rt2, /* Integer register used in ld/st pair instructions. */
128 AARCH64_OPND_Rs, /* Integer register used in ld/st exclusive. */
129 AARCH64_OPND_Ra, /* Integer register used in ddp_3src instructions. */
130 AARCH64_OPND_Rt_SYS, /* Integer register used in system instructions. */
132 AARCH64_OPND_Rd_SP, /* Integer Rd or SP. */
133 AARCH64_OPND_Rn_SP, /* Integer Rn or SP. */
134 AARCH64_OPND_PAIRREG, /* Paired register operand. */
135 AARCH64_OPND_Rm_EXT, /* Integer Rm extended. */
136 AARCH64_OPND_Rm_SFT, /* Integer Rm shifted. */
138 AARCH64_OPND_Fd, /* Floating-point Fd. */
139 AARCH64_OPND_Fn, /* Floating-point Fn. */
140 AARCH64_OPND_Fm, /* Floating-point Fm. */
141 AARCH64_OPND_Fa, /* Floating-point Fa. */
142 AARCH64_OPND_Ft, /* Floating-point Ft. */
143 AARCH64_OPND_Ft2, /* Floating-point Ft2. */
145 AARCH64_OPND_Sd, /* AdvSIMD Scalar Sd. */
146 AARCH64_OPND_Sn, /* AdvSIMD Scalar Sn. */
147 AARCH64_OPND_Sm, /* AdvSIMD Scalar Sm. */
149 AARCH64_OPND_Vd, /* AdvSIMD Vector Vd. */
150 AARCH64_OPND_Vn, /* AdvSIMD Vector Vn. */
151 AARCH64_OPND_Vm, /* AdvSIMD Vector Vm. */
152 AARCH64_OPND_VdD1, /* AdvSIMD <Vd>.D[1]; for FMOV only. */
153 AARCH64_OPND_VnD1, /* AdvSIMD <Vn>.D[1]; for FMOV only. */
154 AARCH64_OPND_Ed, /* AdvSIMD Vector Element Vd. */
155 AARCH64_OPND_En, /* AdvSIMD Vector Element Vn. */
156 AARCH64_OPND_Em, /* AdvSIMD Vector Element Vm. */
157 AARCH64_OPND_LVn, /* AdvSIMD Vector register list used in e.g. TBL. */
158 AARCH64_OPND_LVt, /* AdvSIMD Vector register list used in ld/st. */
159 AARCH64_OPND_LVt_AL, /* AdvSIMD Vector register list for loading single
160 structure to all lanes. */
161 AARCH64_OPND_LEt, /* AdvSIMD Vector Element list. */
163 AARCH64_OPND_Cn, /* Co-processor register in CRn field. */
164 AARCH64_OPND_Cm, /* Co-processor register in CRm field. */
166 AARCH64_OPND_IDX, /* AdvSIMD EXT index operand. */
167 AARCH64_OPND_IMM_VLSL,/* Immediate for shifting vector registers left. */
168 AARCH64_OPND_IMM_VLSR,/* Immediate for shifting vector registers right. */
169 AARCH64_OPND_SIMD_IMM,/* AdvSIMD modified immediate without shift. */
170 AARCH64_OPND_SIMD_IMM_SFT, /* AdvSIMD modified immediate with shift. */
171 AARCH64_OPND_SIMD_FPIMM,/* AdvSIMD 8-bit fp immediate. */
172 AARCH64_OPND_SHLL_IMM,/* Immediate shift for AdvSIMD SHLL instruction
174 AARCH64_OPND_IMM0, /* Immediate for #0. */
175 AARCH64_OPND_FPIMM0, /* Immediate for #0.0. */
176 AARCH64_OPND_FPIMM, /* Floating-point Immediate. */
177 AARCH64_OPND_IMMR, /* Immediate #<immr> in e.g. BFM. */
178 AARCH64_OPND_IMMS, /* Immediate #<imms> in e.g. BFM. */
179 AARCH64_OPND_WIDTH, /* Immediate #<width> in e.g. BFI. */
180 AARCH64_OPND_IMM, /* Immediate. */
181 AARCH64_OPND_UIMM3_OP1,/* Unsigned 3-bit immediate in the op1 field. */
182 AARCH64_OPND_UIMM3_OP2,/* Unsigned 3-bit immediate in the op2 field. */
183 AARCH64_OPND_UIMM4, /* Unsigned 4-bit immediate in the CRm field. */
184 AARCH64_OPND_UIMM7, /* Unsigned 7-bit immediate in the CRm:op2 fields. */
185 AARCH64_OPND_BIT_NUM, /* Immediate. */
186 AARCH64_OPND_EXCEPTION,/* imm16 operand in exception instructions. */
187 AARCH64_OPND_CCMP_IMM,/* Immediate in conditional compare instructions. */
188 AARCH64_OPND_NZCV, /* Flag bit specifier giving an alternative value for
189 each condition flag. */
191 AARCH64_OPND_LIMM, /* Logical Immediate. */
192 AARCH64_OPND_AIMM, /* Arithmetic immediate. */
193 AARCH64_OPND_HALF, /* #<imm16>{, LSL #<shift>} operand in move wide. */
194 AARCH64_OPND_FBITS, /* FP #<fbits> operand in e.g. SCVTF */
195 AARCH64_OPND_IMM_MOV, /* Immediate operand for the MOV alias. */
197 AARCH64_OPND_COND, /* Standard condition as the last operand. */
198 AARCH64_OPND_COND1, /* Same as the above, but excluding AL and NV. */
200 AARCH64_OPND_ADDR_ADRP, /* Memory address for ADRP */
201 AARCH64_OPND_ADDR_PCREL14, /* 14-bit PC-relative address for e.g. TBZ. */
202 AARCH64_OPND_ADDR_PCREL19, /* 19-bit PC-relative address for e.g. LDR. */
203 AARCH64_OPND_ADDR_PCREL21, /* 21-bit PC-relative address for e.g. ADR. */
204 AARCH64_OPND_ADDR_PCREL26, /* 26-bit PC-relative address for e.g. BL. */
206 AARCH64_OPND_ADDR_SIMPLE, /* Address of ld/st exclusive. */
207 AARCH64_OPND_ADDR_REGOFF, /* Address of register offset. */
208 AARCH64_OPND_ADDR_SIMM7, /* Address of signed 7-bit immediate. */
209 AARCH64_OPND_ADDR_SIMM9, /* Address of signed 9-bit immediate. */
210 AARCH64_OPND_ADDR_SIMM9_2, /* Same as the above, but the immediate is
211 negative or unaligned and there is
212 no writeback allowed. This operand code
213 is only used to support the programmer-
214 friendly feature of using LDR/STR as the
215 the mnemonic name for LDUR/STUR instructions
216 wherever there is no ambiguity. */
217 AARCH64_OPND_ADDR_UIMM12, /* Address of unsigned 12-bit immediate. */
218 AARCH64_OPND_SIMD_ADDR_SIMPLE,/* Address of ld/st multiple structures. */
219 AARCH64_OPND_SIMD_ADDR_POST, /* Address of ld/st multiple post-indexed. */
221 AARCH64_OPND_SYSREG, /* System register operand. */
222 AARCH64_OPND_PSTATEFIELD, /* PSTATE field name operand. */
223 AARCH64_OPND_SYSREG_AT, /* System register <at_op> operand. */
224 AARCH64_OPND_SYSREG_DC, /* System register <dc_op> operand. */
225 AARCH64_OPND_SYSREG_IC, /* System register <ic_op> operand. */
226 AARCH64_OPND_SYSREG_TLBI, /* System register <tlbi_op> operand. */
227 AARCH64_OPND_BARRIER, /* Barrier operand. */
228 AARCH64_OPND_BARRIER_ISB, /* Barrier operand for ISB. */
229 AARCH64_OPND_PRFOP, /* Prefetch operation. */
232 /* Qualifier constrains an operand. It either specifies a variant of an
233 operand type or limits values available to an operand type.
235 N.B. Order is important; keep aarch64_opnd_qualifiers synced. */
237 enum aarch64_opnd_qualifier
239 /* Indicating no further qualification on an operand. */
240 AARCH64_OPND_QLF_NIL,
242 /* Qualifying an operand which is a general purpose (integer) register;
243 indicating the operand data size or a specific register. */
244 AARCH64_OPND_QLF_W, /* Wn, WZR or WSP. */
245 AARCH64_OPND_QLF_X, /* Xn, XZR or XSP. */
246 AARCH64_OPND_QLF_WSP, /* WSP. */
247 AARCH64_OPND_QLF_SP, /* SP. */
249 /* Qualifying an operand which is a floating-point register, a SIMD
250 vector element or a SIMD vector element list; indicating operand data
251 size or the size of each SIMD vector element in the case of a SIMD
253 These qualifiers are also used to qualify an address operand to
254 indicate the size of data element a load/store instruction is
256 They are also used for the immediate shift operand in e.g. SSHR. Such
257 a use is only for the ease of operand encoding/decoding and qualifier
258 sequence matching; such a use should not be applied widely; use the value
259 constraint qualifiers for immediate operands wherever possible. */
260 AARCH64_OPND_QLF_S_B,
261 AARCH64_OPND_QLF_S_H,
262 AARCH64_OPND_QLF_S_S,
263 AARCH64_OPND_QLF_S_D,
264 AARCH64_OPND_QLF_S_Q,
266 /* Qualifying an operand which is a SIMD vector register or a SIMD vector
267 register list; indicating register shape.
268 They are also used for the immediate shift operand in e.g. SSHR. Such
269 a use is only for the ease of operand encoding/decoding and qualifier
270 sequence matching; such a use should not be applied widely; use the value
271 constraint qualifiers for immediate operands wherever possible. */
272 AARCH64_OPND_QLF_V_8B,
273 AARCH64_OPND_QLF_V_16B,
274 AARCH64_OPND_QLF_V_4H,
275 AARCH64_OPND_QLF_V_8H,
276 AARCH64_OPND_QLF_V_2S,
277 AARCH64_OPND_QLF_V_4S,
278 AARCH64_OPND_QLF_V_1D,
279 AARCH64_OPND_QLF_V_2D,
280 AARCH64_OPND_QLF_V_1Q,
282 /* Constraint on value. */
283 AARCH64_OPND_QLF_imm_0_7,
284 AARCH64_OPND_QLF_imm_0_15,
285 AARCH64_OPND_QLF_imm_0_31,
286 AARCH64_OPND_QLF_imm_0_63,
287 AARCH64_OPND_QLF_imm_1_32,
288 AARCH64_OPND_QLF_imm_1_64,
290 /* Indicate whether an AdvSIMD modified immediate operand is shift-zeros
292 AARCH64_OPND_QLF_LSL,
293 AARCH64_OPND_QLF_MSL,
295 /* Special qualifier helping retrieve qualifier information during the
296 decoding time (currently not in use). */
297 AARCH64_OPND_QLF_RETRIEVE,
300 /* Instruction class. */
302 enum aarch64_insn_class
357 ldst_imm9, /* immpost or immpre */
376 /* Opcode enumerators. */
420 OP_MOV_IMM_LOG, /* MOV alias for moving bitmask immediate. */
421 OP_MOV_IMM_WIDE, /* MOV alias for moving wide immediate. */
422 OP_MOV_IMM_WIDEN, /* MOV alias for moving wide immediate (negated). */
424 OP_MOV_V, /* MOV alias for moving vector register. */
453 OP_FCVTXN_S, /* Scalar version. */
462 OP_TOTAL_NUM, /* Pseudo. */
465 /* Maximum number of operands an instruction can have. */
466 #define AARCH64_MAX_OPND_NUM 6
467 /* Maximum number of qualifier sequences an instruction can have. */
468 #define AARCH64_MAX_QLF_SEQ_NUM 10
469 /* Operand qualifier typedef; optimized for the size. */
470 typedef unsigned char aarch64_opnd_qualifier_t;
471 /* Operand qualifier sequence typedef. */
472 typedef aarch64_opnd_qualifier_t \
473 aarch64_opnd_qualifier_seq_t [AARCH64_MAX_OPND_NUM];
475 /* FIXME: improve the efficiency. */
476 static inline bfd_boolean
477 empty_qualifier_sequence_p (const aarch64_opnd_qualifier_t *qualifiers)
480 for (i = 0; i < AARCH64_MAX_OPND_NUM; ++i)
481 if (qualifiers[i] != AARCH64_OPND_QLF_NIL)
486 /* This structure holds information for a particular opcode. */
488 struct aarch64_opcode
490 /* The name of the mnemonic. */
493 /* The opcode itself. Those bits which will be filled in with
494 operands are zeroes. */
497 /* The opcode mask. This is used by the disassembler. This is a
498 mask containing ones indicating those bits which must match the
499 opcode field, and zeroes indicating those bits which need not
500 match (and are presumably filled in by operands). */
503 /* Instruction class. */
504 enum aarch64_insn_class iclass;
506 /* Enumerator identifier. */
509 /* Which architecture variant provides this instruction. */
510 const aarch64_feature_set *avariant;
512 /* An array of operand codes. Each code is an index into the
513 operand table. They appear in the order which the operands must
514 appear in assembly code, and are terminated by a zero. */
515 enum aarch64_opnd operands[AARCH64_MAX_OPND_NUM];
517 /* A list of operand qualifier code sequence. Each operand qualifier
518 code qualifies the corresponding operand code. Each operand
519 qualifier sequence specifies a valid opcode variant and related
520 constraint on operands. */
521 aarch64_opnd_qualifier_seq_t qualifiers_list[AARCH64_MAX_QLF_SEQ_NUM];
523 /* Flags providing information about this instruction */
527 typedef struct aarch64_opcode aarch64_opcode;
529 /* Table describing all the AArch64 opcodes. */
530 extern aarch64_opcode aarch64_opcode_table[];
533 #define F_ALIAS (1 << 0)
534 #define F_HAS_ALIAS (1 << 1)
535 /* Disassembly preference priority 1-3 (the larger the higher). If nothing
536 is specified, it is the priority 0 by default, i.e. the lowest priority. */
537 #define F_P1 (1 << 2)
538 #define F_P2 (2 << 2)
539 #define F_P3 (3 << 2)
540 /* Flag an instruction that is truly conditional executed, e.g. b.cond. */
541 #define F_COND (1 << 4)
542 /* Instruction has the field of 'sf'. */
543 #define F_SF (1 << 5)
544 /* Instruction has the field of 'size:Q'. */
545 #define F_SIZEQ (1 << 6)
546 /* Floating-point instruction has the field of 'type'. */
547 #define F_FPTYPE (1 << 7)
548 /* AdvSIMD scalar instruction has the field of 'size'. */
549 #define F_SSIZE (1 << 8)
550 /* AdvSIMD vector register arrangement specifier encoded in "imm5<3:0>:Q". */
552 /* Size of GPR operand in AdvSIMD instructions encoded in Q. */
553 #define F_GPRSIZE_IN_Q (1 << 10)
554 /* Size of Rt load signed instruction encoded in opc[0], i.e. bit 22. */
555 #define F_LDS_SIZE (1 << 11)
556 /* Optional operand; assume maximum of 1 operand can be optional. */
557 #define F_OPD0_OPT (1 << 12)
558 #define F_OPD1_OPT (2 << 12)
559 #define F_OPD2_OPT (3 << 12)
560 #define F_OPD3_OPT (4 << 12)
561 #define F_OPD4_OPT (5 << 12)
562 /* Default value for the optional operand when omitted from the assembly. */
563 #define F_DEFAULT(X) (((X) & 0x1f) << 15)
564 /* Instruction that is an alias of another instruction needs to be
565 encoded/decoded by converting it to/from the real form, followed by
566 the encoding/decoding according to the rules of the real opcode.
567 This compares to the direct coding using the alias's information.
568 N.B. this flag requires F_ALIAS to be used together. */
569 #define F_CONV (1 << 20)
570 /* Use together with F_ALIAS to indicate an alias opcode is a programmer
571 friendly pseudo instruction available only in the assembly code (thus will
572 not show up in the disassembly). */
573 #define F_PSEUDO (1 << 21)
574 /* Instruction has miscellaneous encoding/decoding rules. */
575 #define F_MISC (1 << 22)
576 /* Instruction has the field of 'N'; used in conjunction with F_SF. */
577 #define F_N (1 << 23)
578 /* Opcode dependent field. */
579 #define F_OD(X) (((X) & 0x7) << 24)
580 /* Instruction has the field of 'sz'. */
581 #define F_LSE_SZ (1 << 27)
582 /* Next bit is 28. */
584 static inline bfd_boolean
585 alias_opcode_p (const aarch64_opcode *opcode)
587 return (opcode->flags & F_ALIAS) ? TRUE : FALSE;
590 static inline bfd_boolean
591 opcode_has_alias (const aarch64_opcode *opcode)
593 return (opcode->flags & F_HAS_ALIAS) ? TRUE : FALSE;
596 /* Priority for disassembling preference. */
598 opcode_priority (const aarch64_opcode *opcode)
600 return (opcode->flags >> 2) & 0x3;
603 static inline bfd_boolean
604 pseudo_opcode_p (const aarch64_opcode *opcode)
606 return (opcode->flags & F_PSEUDO) != 0lu ? TRUE : FALSE;
609 static inline bfd_boolean
610 optional_operand_p (const aarch64_opcode *opcode, unsigned int idx)
612 return (((opcode->flags >> 12) & 0x7) == idx + 1)
616 static inline aarch64_insn
617 get_optional_operand_default_value (const aarch64_opcode *opcode)
619 return (opcode->flags >> 15) & 0x1f;
622 static inline unsigned int
623 get_opcode_dependent_value (const aarch64_opcode *opcode)
625 return (opcode->flags >> 24) & 0x7;
628 static inline bfd_boolean
629 opcode_has_special_coder (const aarch64_opcode *opcode)
631 return (opcode->flags & (F_SF | F_LSE_SZ | F_SIZEQ | F_FPTYPE | F_SSIZE | F_T
632 | F_GPRSIZE_IN_Q | F_LDS_SIZE | F_MISC | F_N | F_COND)) ? TRUE
636 struct aarch64_name_value_pair
642 extern const struct aarch64_name_value_pair aarch64_operand_modifiers [];
643 extern const struct aarch64_name_value_pair aarch64_barrier_options [16];
644 extern const struct aarch64_name_value_pair aarch64_prfops [32];
653 extern const aarch64_sys_reg aarch64_sys_regs [];
654 extern const aarch64_sys_reg aarch64_pstatefields [];
655 extern bfd_boolean aarch64_sys_reg_deprecated_p (const aarch64_sys_reg *);
656 extern bfd_boolean aarch64_sys_reg_supported_p (const aarch64_feature_set,
657 const aarch64_sys_reg *);
658 extern bfd_boolean aarch64_pstatefield_supported_p (const aarch64_feature_set,
659 const aarch64_sys_reg *);
666 } aarch64_sys_ins_reg;
668 extern const aarch64_sys_ins_reg aarch64_sys_regs_ic [];
669 extern const aarch64_sys_ins_reg aarch64_sys_regs_dc [];
670 extern const aarch64_sys_ins_reg aarch64_sys_regs_at [];
671 extern const aarch64_sys_ins_reg aarch64_sys_regs_tlbi [];
673 /* Shift/extending operator kinds.
674 N.B. order is important; keep aarch64_operand_modifiers synced. */
675 enum aarch64_modifier_kind
694 aarch64_extend_operator_p (enum aarch64_modifier_kind);
696 enum aarch64_modifier_kind
697 aarch64_get_operand_modifier (const struct aarch64_name_value_pair *);
702 /* A list of names with the first one as the disassembly preference;
703 terminated by NULL if fewer than 3. */
704 const char *names[3];
708 extern const aarch64_cond aarch64_conds[16];
710 const aarch64_cond* get_cond_from_value (aarch64_insn value);
711 const aarch64_cond* get_inverted_cond (const aarch64_cond *cond);
713 /* Structure representing an operand. */
715 struct aarch64_opnd_info
717 enum aarch64_opnd type;
718 aarch64_opnd_qualifier_t qualifier;
735 unsigned first_regno : 5;
736 unsigned num_regs : 3;
737 /* 1 if it is a list of reg element. */
738 unsigned has_index : 1;
739 /* Lane index; valid only when has_index is 1. */
742 /* e.g. immediate or pc relative address offset. */
748 /* e.g. address in STR (register offset). */
761 unsigned pcrel : 1; /* PC-relative. */
762 unsigned writeback : 1;
763 unsigned preind : 1; /* Pre-indexed. */
764 unsigned postind : 1; /* Post-indexed. */
766 const aarch64_cond *cond;
767 /* The encoding of the system register. */
769 /* The encoding of the PSTATE field. */
770 aarch64_insn pstatefield;
771 const aarch64_sys_ins_reg *sysins_op;
772 const struct aarch64_name_value_pair *barrier;
773 const struct aarch64_name_value_pair *prfop;
776 /* Operand shifter; in use when the operand is a register offset address,
777 add/sub extended reg, etc. e.g. <R><m>{, <extend> {#<amount>}}. */
780 enum aarch64_modifier_kind kind;
782 unsigned operator_present: 1; /* Only valid during encoding. */
783 /* Value of the 'S' field in ld/st reg offset; used only in decoding. */
784 unsigned amount_present: 1;
787 unsigned skip:1; /* Operand is not completed if there is a fixup needed
788 to be done on it. In some (but not all) of these
789 cases, we need to tell libopcodes to skip the
790 constraint checking and the encoding for this
791 operand, so that the libopcodes can pick up the
792 right opcode before the operand is fixed-up. This
793 flag should only be used during the
794 assembling/encoding. */
795 unsigned present:1; /* Whether this operand is present in the assembly
796 line; not used during the disassembly. */
799 typedef struct aarch64_opnd_info aarch64_opnd_info;
801 /* Structure representing an instruction.
803 It is used during both the assembling and disassembling. The assembler
804 fills an aarch64_inst after a successful parsing and then passes it to the
805 encoding routine to do the encoding. During the disassembling, the
806 disassembler calls the decoding routine to decode a binary instruction; on a
807 successful return, such a structure will be filled with information of the
808 instruction; then the disassembler uses the information to print out the
813 /* The value of the binary instruction. */
816 /* Corresponding opcode entry. */
817 const aarch64_opcode *opcode;
819 /* Condition for a truly conditional-executed instrutions, e.g. b.cond. */
820 const aarch64_cond *cond;
822 /* Operands information. */
823 aarch64_opnd_info operands[AARCH64_MAX_OPND_NUM];
826 typedef struct aarch64_inst aarch64_inst;
828 /* Diagnosis related declaration and interface. */
830 /* Operand error kind enumerators.
832 AARCH64_OPDE_RECOVERABLE
833 Less severe error found during the parsing, very possibly because that
834 GAS has picked up a wrong instruction template for the parsing.
836 AARCH64_OPDE_SYNTAX_ERROR
837 General syntax error; it can be either a user error, or simply because
838 that GAS is trying a wrong instruction template.
840 AARCH64_OPDE_FATAL_SYNTAX_ERROR
841 Definitely a user syntax error.
843 AARCH64_OPDE_INVALID_VARIANT
844 No syntax error, but the operands are not a valid combination, e.g.
847 AARCH64_OPDE_OUT_OF_RANGE
848 Error about some immediate value out of a valid range.
850 AARCH64_OPDE_UNALIGNED
851 Error about some immediate value not properly aligned (i.e. not being a
852 multiple times of a certain value).
854 AARCH64_OPDE_REG_LIST
855 Error about the register list operand having unexpected number of
858 AARCH64_OPDE_OTHER_ERROR
859 Error of the highest severity and used for any severe issue that does not
860 fall into any of the above categories.
862 The enumerators are only interesting to GAS. They are declared here (in
863 libopcodes) because that some errors are detected (and then notified to GAS)
864 by libopcodes (rather than by GAS solely).
866 The first three errors are only deteced by GAS while the
867 AARCH64_OPDE_INVALID_VARIANT error can only be spotted by libopcodes as
868 only libopcodes has the information about the valid variants of each
871 The enumerators have an increasing severity. This is helpful when there are
872 multiple instruction templates available for a given mnemonic name (e.g.
873 FMOV); this mechanism will help choose the most suitable template from which
874 the generated diagnostics can most closely describe the issues, if any. */
876 enum aarch64_operand_error_kind
879 AARCH64_OPDE_RECOVERABLE,
880 AARCH64_OPDE_SYNTAX_ERROR,
881 AARCH64_OPDE_FATAL_SYNTAX_ERROR,
882 AARCH64_OPDE_INVALID_VARIANT,
883 AARCH64_OPDE_OUT_OF_RANGE,
884 AARCH64_OPDE_UNALIGNED,
885 AARCH64_OPDE_REG_LIST,
886 AARCH64_OPDE_OTHER_ERROR
889 /* N.B. GAS assumes that this structure work well with shallow copy. */
890 struct aarch64_operand_error
892 enum aarch64_operand_error_kind kind;
895 int data[3]; /* Some data for extra information. */
898 typedef struct aarch64_operand_error aarch64_operand_error;
900 /* Encoding entrypoint. */
903 aarch64_opcode_encode (const aarch64_opcode *, const aarch64_inst *,
904 aarch64_insn *, aarch64_opnd_qualifier_t *,
905 aarch64_operand_error *);
907 extern const aarch64_opcode *
908 aarch64_replace_opcode (struct aarch64_inst *,
909 const aarch64_opcode *);
911 /* Given the opcode enumerator OP, return the pointer to the corresponding
914 extern const aarch64_opcode *
915 aarch64_get_opcode (enum aarch64_op);
917 /* Generate the string representation of an operand. */
919 aarch64_print_operand (char *, size_t, bfd_vma, const aarch64_opcode *,
920 const aarch64_opnd_info *, int, int *, bfd_vma *);
922 /* Miscellaneous interface. */
925 aarch64_operand_index (const enum aarch64_opnd *, enum aarch64_opnd);
927 extern aarch64_opnd_qualifier_t
928 aarch64_get_expected_qualifier (const aarch64_opnd_qualifier_seq_t *, int,
929 const aarch64_opnd_qualifier_t, int);
932 aarch64_num_of_operands (const aarch64_opcode *);
935 aarch64_stack_pointer_p (const aarch64_opnd_info *);
938 aarch64_zero_register_p (const aarch64_opnd_info *);
941 aarch64_decode_insn (aarch64_insn, aarch64_inst *, bfd_boolean);
943 /* Given an operand qualifier, return the expected data element size
944 of a qualified operand. */
946 aarch64_get_qualifier_esize (aarch64_opnd_qualifier_t);
948 extern enum aarch64_operand_class
949 aarch64_get_operand_class (enum aarch64_opnd);
952 aarch64_get_operand_name (enum aarch64_opnd);
955 aarch64_get_operand_desc (enum aarch64_opnd);
958 extern int debug_dump;
961 aarch64_verbose (const char *, ...) __attribute__ ((format (printf, 1, 2)));
963 #define DEBUG_TRACE(M, ...) \
966 aarch64_verbose ("%s: " M ".", __func__, ##__VA_ARGS__); \
969 #define DEBUG_TRACE_IF(C, M, ...) \
971 if (debug_dump && (C)) \
972 aarch64_verbose ("%s: " M ".", __func__, ##__VA_ARGS__); \
974 #else /* !DEBUG_AARCH64 */
975 #define DEBUG_TRACE(M, ...) ;
976 #define DEBUG_TRACE_IF(C, M, ...) ;
977 #endif /* DEBUG_AARCH64 */
983 #endif /* OPCODE_AARCH64_H */