include/opcode/aarch64.h

   1 /* AArch64 assembler/disassembler support.
   2
   3    Copyright (C) 2009-2019 Free Software Foundation, Inc.
   4    Contributed by ARM Ltd.
   5
   6    This file is part of GNU Binutils.
   7
   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.
  12
  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.
  17
  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/>.  */
  21
  22 #ifndef OPCODE_AARCH64_H
  23 #define OPCODE_AARCH64_H
  24
  25 #include "bfd.h"
  26 #include "bfd_stdint.h"
  27 #include <assert.h>
  28 #include <stdlib.h>
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /* The offset for pc-relative addressing is currently defined to be 0.  */
  35 #define AARCH64_PCREL_OFFSET            0
  36
  37 typedef uint32_t aarch64_insn;
  38
  39 /* The following bitmasks control CPU features.  */
  40 #define AARCH64_FEATURE_SHA2    0x200000000ULL  /* SHA2 instructions.  */
  41 #define AARCH64_FEATURE_AES     0x800000000ULL  /* AES instructions.  */
  42 #define AARCH64_FEATURE_V8_4    0x000000800ULL  /* ARMv8.4 processors.  */
  43 #define AARCH64_FEATURE_SM4     0x100000000ULL  /* SM3 & SM4 instructions.  */
  44 #define AARCH64_FEATURE_SHA3    0x400000000ULL  /* SHA3 instructions.  */
  45 #define AARCH64_FEATURE_V8      0x00000001      /* All processors.  */
  46 #define AARCH64_FEATURE_V8_2    0x00000020      /* ARMv8.2 processors.  */
  47 #define AARCH64_FEATURE_V8_3    0x00000040      /* ARMv8.3 processors.  */
  48 #define AARCH64_FEATURE_CRYPTO  0x00010000      /* Crypto instructions.  */
  49 #define AARCH64_FEATURE_FP      0x00020000      /* FP instructions.  */
  50 #define AARCH64_FEATURE_SIMD    0x00040000      /* SIMD instructions.  */
  51 #define AARCH64_FEATURE_CRC     0x00080000      /* CRC instructions.  */
  52 #define AARCH64_FEATURE_LSE     0x00100000      /* LSE instructions.  */
  53 #define AARCH64_FEATURE_PAN     0x00200000      /* PAN instructions.  */
  54 #define AARCH64_FEATURE_LOR     0x00400000      /* LOR instructions.  */
  55 #define AARCH64_FEATURE_RDMA    0x00800000      /* v8.1 SIMD instructions.  */
  56 #define AARCH64_FEATURE_V8_1    0x01000000      /* v8.1 features.  */
  57 #define AARCH64_FEATURE_F16     0x02000000      /* v8.2 FP16 instructions.  */
  58 #define AARCH64_FEATURE_RAS     0x04000000      /* RAS Extensions.  */
  59 #define AARCH64_FEATURE_PROFILE 0x08000000      /* Statistical Profiling.  */
  60 #define AARCH64_FEATURE_SVE     0x10000000      /* SVE instructions.  */
  61 #define AARCH64_FEATURE_RCPC    0x20000000      /* RCPC instructions.  */
  62 #define AARCH64_FEATURE_COMPNUM 0x40000000      /* Complex # instructions.  */
  63 #define AARCH64_FEATURE_DOTPROD 0x080000000     /* Dot Product instructions.  */
  64 #define AARCH64_FEATURE_F16_FML 0x1000000000ULL /* v8.2 FP16FML ins.  */
  65 #define AARCH64_FEATURE_V8_5    0x2000000000ULL /* ARMv8.5 processors.  */
  66
  67 /* Flag Manipulation insns.  */
  68 #define AARCH64_FEATURE_FLAGMANIP       0x4000000000ULL
  69 /* FRINT[32,64][Z,X] insns.  */
  70 #define AARCH64_FEATURE_FRINTTS         0x8000000000ULL
  71 /* SB instruction.  */
  72 #define AARCH64_FEATURE_SB              0x10000000000ULL
  73 /* Execution and Data Prediction Restriction instructions.  */
  74 #define AARCH64_FEATURE_PREDRES         0x20000000000ULL
  75 /* DC CVADP.  */
  76 #define AARCH64_FEATURE_CVADP           0x40000000000ULL
  77 /* Random Number instructions.  */
  78 #define AARCH64_FEATURE_RNG             0x80000000000ULL
  79 /* BTI instructions.  */
  80 #define AARCH64_FEATURE_BTI             0x100000000000ULL
  81 /* SCXTNUM_ELx.  */
  82 #define AARCH64_FEATURE_SCXTNUM         0x200000000000ULL
  83 /* ID_PFR2 instructions.  */
  84 #define AARCH64_FEATURE_ID_PFR2         0x400000000000ULL
  85 /* SSBS mechanism enabled.  */
  86 #define AARCH64_FEATURE_SSBS            0x800000000000ULL
  87 /* Memory Tagging Extension.  */
  88 #define AARCH64_FEATURE_MEMTAG          0x1000000000000ULL
  89 /* Transactional Memory Extension.  */
  90 #define AARCH64_FEATURE_TME             0x2000000000000ULL
  91
  92 /* SVE2 instructions.  */
  93 #define AARCH64_FEATURE_SVE2            0x000000010
  94 #define AARCH64_FEATURE_SVE2_AES                0x000000080
  95 #define AARCH64_FEATURE_SVE2_BITPERM    0x000000100
  96 #define AARCH64_FEATURE_SVE2_SM4                0x000000200
  97 #define AARCH64_FEATURE_SVE2_SHA3       0x000000400
  98
  99 /* Architectures are the sum of the base and extensions.  */
 100 #define AARCH64_ARCH_V8         AARCH64_FEATURE (AARCH64_FEATURE_V8, \
 101                                                  AARCH64_FEATURE_FP  \
 102                                                  | AARCH64_FEATURE_SIMD)
 103 #define AARCH64_ARCH_V8_1       AARCH64_FEATURE (AARCH64_ARCH_V8, \
 104                                                  AARCH64_FEATURE_CRC    \
 105                                                  | AARCH64_FEATURE_V8_1 \
 106                                                  | AARCH64_FEATURE_LSE  \
 107                                                  | AARCH64_FEATURE_PAN  \
 108                                                  | AARCH64_FEATURE_LOR  \
 109                                                  | AARCH64_FEATURE_RDMA)
 110 #define AARCH64_ARCH_V8_2       AARCH64_FEATURE (AARCH64_ARCH_V8_1,     \
 111                                                  AARCH64_FEATURE_V8_2   \
 112                                                  | AARCH64_FEATURE_RAS)
 113 #define AARCH64_ARCH_V8_3       AARCH64_FEATURE (AARCH64_ARCH_V8_2,     \
 114                                                  AARCH64_FEATURE_V8_3   \
 115                                                  | AARCH64_FEATURE_RCPC \
 116                                                  | AARCH64_FEATURE_COMPNUM)
 117 #define AARCH64_ARCH_V8_4       AARCH64_FEATURE (AARCH64_ARCH_V8_3,     \
 118                                                  AARCH64_FEATURE_V8_4   \
 119                                                  | AARCH64_FEATURE_DOTPROD \
 120                                                  | AARCH64_FEATURE_F16_FML)
 121 #define AARCH64_ARCH_V8_5       AARCH64_FEATURE (AARCH64_ARCH_V8_4,     \
 122                                                  AARCH64_FEATURE_V8_5   \
 123                                                  | AARCH64_FEATURE_FLAGMANIP \
 124                                                  | AARCH64_FEATURE_FRINTTS \
 125                                                  | AARCH64_FEATURE_SB   \
 126                                                  | AARCH64_FEATURE_PREDRES \
 127                                                  | AARCH64_FEATURE_CVADP \
 128                                                  | AARCH64_FEATURE_BTI  \
 129                                                  | AARCH64_FEATURE_SCXTNUM \
 130                                                  | AARCH64_FEATURE_ID_PFR2 \
 131                                                  | AARCH64_FEATURE_SSBS)
 132
 133
 134 #define AARCH64_ARCH_NONE       AARCH64_FEATURE (0, 0)
 135 #define AARCH64_ANY             AARCH64_FEATURE (-1, 0) /* Any basic core.  */
 136
 137 /* CPU-specific features.  */
 138 typedef unsigned long long aarch64_feature_set;
 139
 140 #define AARCH64_CPU_HAS_ALL_FEATURES(CPU,FEAT)  \
 141   ((~(CPU) & (FEAT)) == 0)
 142
 143 #define AARCH64_CPU_HAS_ANY_FEATURES(CPU,FEAT)  \
 144   (((CPU) & (FEAT)) != 0)
 145
 146 #define AARCH64_CPU_HAS_FEATURE(CPU,FEAT)       \
 147   AARCH64_CPU_HAS_ALL_FEATURES (CPU,FEAT)
 148
 149 #define AARCH64_MERGE_FEATURE_SETS(TARG,F1,F2)  \
 150   do                                            \
 151     {                                           \
 152       (TARG) = (F1) | (F2);                     \
 153     }                                           \
 154   while (0)
 155
 156 #define AARCH64_CLEAR_FEATURE(TARG,F1,F2)       \
 157   do                                            \
 158     {                                           \
 159       (TARG) = (F1) &~ (F2);                    \
 160     }                                           \
 161   while (0)
 162
 163 #define AARCH64_FEATURE(core,coproc) ((core) | (coproc))
 164
 165 enum aarch64_operand_class
 166 {
 167   AARCH64_OPND_CLASS_NIL,
 168   AARCH64_OPND_CLASS_INT_REG,
 169   AARCH64_OPND_CLASS_MODIFIED_REG,
 170   AARCH64_OPND_CLASS_FP_REG,
 171   AARCH64_OPND_CLASS_SIMD_REG,
 172   AARCH64_OPND_CLASS_SIMD_ELEMENT,
 173   AARCH64_OPND_CLASS_SISD_REG,
 174   AARCH64_OPND_CLASS_SIMD_REGLIST,
 175   AARCH64_OPND_CLASS_SVE_REG,
 176   AARCH64_OPND_CLASS_PRED_REG,
 177   AARCH64_OPND_CLASS_ADDRESS,
 178   AARCH64_OPND_CLASS_IMMEDIATE,
 179   AARCH64_OPND_CLASS_SYSTEM,
 180   AARCH64_OPND_CLASS_COND,
 181 };
 182
 183 /* Operand code that helps both parsing and coding.
 184    Keep AARCH64_OPERANDS synced.  */
 185
 186 enum aarch64_opnd
 187 {
 188   AARCH64_OPND_NIL,     /* no operand---MUST BE FIRST!*/
 189
 190   AARCH64_OPND_Rd,      /* Integer register as destination.  */
 191   AARCH64_OPND_Rn,      /* Integer register as source.  */
 192   AARCH64_OPND_Rm,      /* Integer register as source.  */
 193   AARCH64_OPND_Rt,      /* Integer register used in ld/st instructions.  */
 194   AARCH64_OPND_Rt2,     /* Integer register used in ld/st pair instructions.  */
 195   AARCH64_OPND_Rt_SP,   /* Integer Rt or SP used in STG instructions.  */
 196   AARCH64_OPND_Rs,      /* Integer register used in ld/st exclusive.  */
 197   AARCH64_OPND_Ra,      /* Integer register used in ddp_3src instructions.  */
 198   AARCH64_OPND_Rt_SYS,  /* Integer register used in system instructions.  */
 199
 200   AARCH64_OPND_Rd_SP,   /* Integer Rd or SP.  */
 201   AARCH64_OPND_Rn_SP,   /* Integer Rn or SP.  */
 202   AARCH64_OPND_Rm_SP,   /* Integer Rm or SP.  */
 203   AARCH64_OPND_PAIRREG, /* Paired register operand.  */
 204   AARCH64_OPND_Rm_EXT,  /* Integer Rm extended.  */
 205   AARCH64_OPND_Rm_SFT,  /* Integer Rm shifted.  */
 206
 207   AARCH64_OPND_Fd,      /* Floating-point Fd.  */
 208   AARCH64_OPND_Fn,      /* Floating-point Fn.  */
 209   AARCH64_OPND_Fm,      /* Floating-point Fm.  */
 210   AARCH64_OPND_Fa,      /* Floating-point Fa.  */
 211   AARCH64_OPND_Ft,      /* Floating-point Ft.  */
 212   AARCH64_OPND_Ft2,     /* Floating-point Ft2.  */
 213
 214   AARCH64_OPND_Sd,      /* AdvSIMD Scalar Sd.  */
 215   AARCH64_OPND_Sn,      /* AdvSIMD Scalar Sn.  */
 216   AARCH64_OPND_Sm,      /* AdvSIMD Scalar Sm.  */
 217
 218   AARCH64_OPND_Va,      /* AdvSIMD Vector Va.  */
 219   AARCH64_OPND_Vd,      /* AdvSIMD Vector Vd.  */
 220   AARCH64_OPND_Vn,      /* AdvSIMD Vector Vn.  */
 221   AARCH64_OPND_Vm,      /* AdvSIMD Vector Vm.  */
 222   AARCH64_OPND_VdD1,    /* AdvSIMD <Vd>.D[1]; for FMOV only.  */
 223   AARCH64_OPND_VnD1,    /* AdvSIMD <Vn>.D[1]; for FMOV only.  */
 224   AARCH64_OPND_Ed,      /* AdvSIMD Vector Element Vd.  */
 225   AARCH64_OPND_En,      /* AdvSIMD Vector Element Vn.  */
 226   AARCH64_OPND_Em,      /* AdvSIMD Vector Element Vm.  */
 227   AARCH64_OPND_Em16,    /* AdvSIMD Vector Element Vm restricted to V0 - V15 when
 228                            qualifier is S_H.  */
 229   AARCH64_OPND_LVn,     /* AdvSIMD Vector register list used in e.g. TBL.  */
 230   AARCH64_OPND_LVt,     /* AdvSIMD Vector register list used in ld/st.  */
 231   AARCH64_OPND_LVt_AL,  /* AdvSIMD Vector register list for loading single
 232                            structure to all lanes.  */
 233   AARCH64_OPND_LEt,     /* AdvSIMD Vector Element list.  */
 234
 235   AARCH64_OPND_CRn,     /* Co-processor register in CRn field.  */
 236   AARCH64_OPND_CRm,     /* Co-processor register in CRm field.  */
 237
 238   AARCH64_OPND_IDX,     /* AdvSIMD EXT index operand.  */
 239   AARCH64_OPND_MASK,    /* AdvSIMD EXT index operand.  */
 240   AARCH64_OPND_IMM_VLSL,/* Immediate for shifting vector registers left.  */
 241   AARCH64_OPND_IMM_VLSR,/* Immediate for shifting vector registers right.  */
 242   AARCH64_OPND_SIMD_IMM,/* AdvSIMD modified immediate without shift.  */
 243   AARCH64_OPND_SIMD_IMM_SFT,    /* AdvSIMD modified immediate with shift.  */
 244   AARCH64_OPND_SIMD_FPIMM,/* AdvSIMD 8-bit fp immediate.  */
 245   AARCH64_OPND_SHLL_IMM,/* Immediate shift for AdvSIMD SHLL instruction
 246                            (no encoding).  */
 247   AARCH64_OPND_IMM0,    /* Immediate for #0.  */
 248   AARCH64_OPND_FPIMM0,  /* Immediate for #0.0.  */
 249   AARCH64_OPND_FPIMM,   /* Floating-point Immediate.  */
 250   AARCH64_OPND_IMMR,    /* Immediate #<immr> in e.g. BFM.  */
 251   AARCH64_OPND_IMMS,    /* Immediate #<imms> in e.g. BFM.  */
 252   AARCH64_OPND_WIDTH,   /* Immediate #<width> in e.g. BFI.  */
 253   AARCH64_OPND_IMM,     /* Immediate.  */
 254   AARCH64_OPND_IMM_2,   /* Immediate.  */
 255   AARCH64_OPND_UIMM3_OP1,/* Unsigned 3-bit immediate in the op1 field.  */
 256   AARCH64_OPND_UIMM3_OP2,/* Unsigned 3-bit immediate in the op2 field.  */
 257   AARCH64_OPND_UIMM4,   /* Unsigned 4-bit immediate in the CRm field.  */
 258   AARCH64_OPND_UIMM4_ADDG,/* Unsigned 4-bit immediate in addg/subg.  */
 259   AARCH64_OPND_UIMM7,   /* Unsigned 7-bit immediate in the CRm:op2 fields.  */
 260   AARCH64_OPND_UIMM10,  /* Unsigned 10-bit immediate in addg/subg.  */
 261   AARCH64_OPND_BIT_NUM, /* Immediate.  */
 262   AARCH64_OPND_EXCEPTION,/* imm16 operand in exception instructions.  */
 263   AARCH64_OPND_CCMP_IMM,/* Immediate in conditional compare instructions.  */
 264   AARCH64_OPND_SIMM5,   /* 5-bit signed immediate in the imm5 field.  */
 265   AARCH64_OPND_NZCV,    /* Flag bit specifier giving an alternative value for
 266                            each condition flag.  */
 267
 268   AARCH64_OPND_LIMM,    /* Logical Immediate.  */
 269   AARCH64_OPND_AIMM,    /* Arithmetic immediate.  */
 270   AARCH64_OPND_HALF,    /* #<imm16>{, LSL #<shift>} operand in move wide.  */
 271   AARCH64_OPND_FBITS,   /* FP #<fbits> operand in e.g. SCVTF */
 272   AARCH64_OPND_IMM_MOV, /* Immediate operand for the MOV alias.  */
 273   AARCH64_OPND_IMM_ROT1,        /* Immediate rotate operand for FCMLA.  */
 274   AARCH64_OPND_IMM_ROT2,        /* Immediate rotate operand for indexed FCMLA.  */
 275   AARCH64_OPND_IMM_ROT3,        /* Immediate rotate operand for FCADD.  */
 276
 277   AARCH64_OPND_COND,    /* Standard condition as the last operand.  */
 278   AARCH64_OPND_COND1,   /* Same as the above, but excluding AL and NV.  */
 279
 280   AARCH64_OPND_ADDR_ADRP,       /* Memory address for ADRP */
 281   AARCH64_OPND_ADDR_PCREL14,    /* 14-bit PC-relative address for e.g. TBZ.  */
 282   AARCH64_OPND_ADDR_PCREL19,    /* 19-bit PC-relative address for e.g. LDR.  */
 283   AARCH64_OPND_ADDR_PCREL21,    /* 21-bit PC-relative address for e.g. ADR.  */
 284   AARCH64_OPND_ADDR_PCREL26,    /* 26-bit PC-relative address for e.g. BL.  */
 285
 286   AARCH64_OPND_ADDR_SIMPLE,     /* Address of ld/st exclusive.  */
 287   AARCH64_OPND_ADDR_REGOFF,     /* Address of register offset.  */
 288   AARCH64_OPND_ADDR_SIMM7,      /* Address of signed 7-bit immediate.  */
 289   AARCH64_OPND_ADDR_SIMM9,      /* Address of signed 9-bit immediate.  */
 290   AARCH64_OPND_ADDR_SIMM9_2,    /* Same as the above, but the immediate is
 291                                    negative or unaligned and there is
 292                                    no writeback allowed.  This operand code
 293                                    is only used to support the programmer-
 294                                    friendly feature of using LDR/STR as the
 295                                    the mnemonic name for LDUR/STUR instructions
 296                                    wherever there is no ambiguity.  */
 297   AARCH64_OPND_ADDR_SIMM10,     /* Address of signed 10-bit immediate.  */
 298   AARCH64_OPND_ADDR_SIMM11,     /* Address with a signed 11-bit (multiple of
 299                                    16) immediate.  */
 300   AARCH64_OPND_ADDR_UIMM12,     /* Address of unsigned 12-bit immediate.  */
 301   AARCH64_OPND_ADDR_SIMM13,     /* Address with a signed 13-bit (multiple of
 302                                    16) immediate.  */
 303   AARCH64_OPND_SIMD_ADDR_SIMPLE,/* Address of ld/st multiple structures.  */
 304   AARCH64_OPND_ADDR_OFFSET,     /* Address with an optional 9-bit immediate.  */
 305   AARCH64_OPND_SIMD_ADDR_POST,  /* Address of ld/st multiple post-indexed.  */
 306
 307   AARCH64_OPND_SYSREG,          /* System register operand.  */
 308   AARCH64_OPND_PSTATEFIELD,     /* PSTATE field name operand.  */
 309   AARCH64_OPND_SYSREG_AT,       /* System register <at_op> operand.  */
 310   AARCH64_OPND_SYSREG_DC,       /* System register <dc_op> operand.  */
 311   AARCH64_OPND_SYSREG_IC,       /* System register <ic_op> operand.  */
 312   AARCH64_OPND_SYSREG_TLBI,     /* System register <tlbi_op> operand.  */
 313   AARCH64_OPND_SYSREG_SR,       /* System register RCTX operand.  */
 314   AARCH64_OPND_BARRIER,         /* Barrier operand.  */
 315   AARCH64_OPND_BARRIER_ISB,     /* Barrier operand for ISB.  */
 316   AARCH64_OPND_PRFOP,           /* Prefetch operation.  */
 317   AARCH64_OPND_BARRIER_PSB,     /* Barrier operand for PSB.  */
 318   AARCH64_OPND_BTI_TARGET,      /* BTI {<target>}.  */
 319
 320   AARCH64_OPND_SVE_ADDR_RI_S4x16,   /* SVE [<Xn|SP>, #<simm4>*16].  */
 321   AARCH64_OPND_SVE_ADDR_RI_S4xVL,   /* SVE [<Xn|SP>, #<simm4>, MUL VL].  */
 322   AARCH64_OPND_SVE_ADDR_RI_S4x2xVL, /* SVE [<Xn|SP>, #<simm4>*2, MUL VL].  */
 323   AARCH64_OPND_SVE_ADDR_RI_S4x3xVL, /* SVE [<Xn|SP>, #<simm4>*3, MUL VL].  */
 324   AARCH64_OPND_SVE_ADDR_RI_S4x4xVL, /* SVE [<Xn|SP>, #<simm4>*4, MUL VL].  */
 325   AARCH64_OPND_SVE_ADDR_RI_S6xVL,   /* SVE [<Xn|SP>, #<simm6>, MUL VL].  */
 326   AARCH64_OPND_SVE_ADDR_RI_S9xVL,   /* SVE [<Xn|SP>, #<simm9>, MUL VL].  */
 327   AARCH64_OPND_SVE_ADDR_RI_U6,      /* SVE [<Xn|SP>, #<uimm6>].  */
 328   AARCH64_OPND_SVE_ADDR_RI_U6x2,    /* SVE [<Xn|SP>, #<uimm6>*2].  */
 329   AARCH64_OPND_SVE_ADDR_RI_U6x4,    /* SVE [<Xn|SP>, #<uimm6>*4].  */
 330   AARCH64_OPND_SVE_ADDR_RI_U6x8,    /* SVE [<Xn|SP>, #<uimm6>*8].  */
 331   AARCH64_OPND_SVE_ADDR_R,          /* SVE [<Xn|SP>].  */
 332   AARCH64_OPND_SVE_ADDR_RR,         /* SVE [<Xn|SP>, <Xm|XZR>].  */
 333   AARCH64_OPND_SVE_ADDR_RR_LSL1,    /* SVE [<Xn|SP>, <Xm|XZR>, LSL #1].  */
 334   AARCH64_OPND_SVE_ADDR_RR_LSL2,    /* SVE [<Xn|SP>, <Xm|XZR>, LSL #2].  */
 335   AARCH64_OPND_SVE_ADDR_RR_LSL3,    /* SVE [<Xn|SP>, <Xm|XZR>, LSL #3].  */
 336   AARCH64_OPND_SVE_ADDR_RX,         /* SVE [<Xn|SP>, <Xm>].  */
 337   AARCH64_OPND_SVE_ADDR_RX_LSL1,    /* SVE [<Xn|SP>, <Xm>, LSL #1].  */
 338   AARCH64_OPND_SVE_ADDR_RX_LSL2,    /* SVE [<Xn|SP>, <Xm>, LSL #2].  */
 339   AARCH64_OPND_SVE_ADDR_RX_LSL3,    /* SVE [<Xn|SP>, <Xm>, LSL #3].  */
 340   AARCH64_OPND_SVE_ADDR_ZX,         /* SVE [Zn.<T>{, <Xm>}].  */
 341   AARCH64_OPND_SVE_ADDR_RZ,         /* SVE [<Xn|SP>, Zm.D].  */
 342   AARCH64_OPND_SVE_ADDR_RZ_LSL1,    /* SVE [<Xn|SP>, Zm.D, LSL #1].  */
 343   AARCH64_OPND_SVE_ADDR_RZ_LSL2,    /* SVE [<Xn|SP>, Zm.D, LSL #2].  */
 344   AARCH64_OPND_SVE_ADDR_RZ_LSL3,    /* SVE [<Xn|SP>, Zm.D, LSL #3].  */
 345   AARCH64_OPND_SVE_ADDR_RZ_XTW_14,  /* SVE [<Xn|SP>, Zm.<T>, (S|U)XTW].
 346                                        Bit 14 controls S/U choice.  */
 347   AARCH64_OPND_SVE_ADDR_RZ_XTW_22,  /* SVE [<Xn|SP>, Zm.<T>, (S|U)XTW].
 348                                        Bit 22 controls S/U choice.  */
 349   AARCH64_OPND_SVE_ADDR_RZ_XTW1_14, /* SVE [<Xn|SP>, Zm.<T>, (S|U)XTW #1].
 350                                        Bit 14 controls S/U choice.  */
 351   AARCH64_OPND_SVE_ADDR_RZ_XTW1_22, /* SVE [<Xn|SP>, Zm.<T>, (S|U)XTW #1].
 352                                        Bit 22 controls S/U choice.  */
 353   AARCH64_OPND_SVE_ADDR_RZ_XTW2_14, /* SVE [<Xn|SP>, Zm.<T>, (S|U)XTW #2].
 354                                        Bit 14 controls S/U choice.  */
 355   AARCH64_OPND_SVE_ADDR_RZ_XTW2_22, /* SVE [<Xn|SP>, Zm.<T>, (S|U)XTW #2].
 356                                        Bit 22 controls S/U choice.  */
 357   AARCH64_OPND_SVE_ADDR_RZ_XTW3_14, /* SVE [<Xn|SP>, Zm.<T>, (S|U)XTW #3].
 358                                        Bit 14 controls S/U choice.  */
 359   AARCH64_OPND_SVE_ADDR_RZ_XTW3_22, /* SVE [<Xn|SP>, Zm.<T>, (S|U)XTW #3].
 360                                        Bit 22 controls S/U choice.  */
 361   AARCH64_OPND_SVE_ADDR_ZI_U5,      /* SVE [Zn.<T>, #<uimm5>].  */
 362   AARCH64_OPND_SVE_ADDR_ZI_U5x2,    /* SVE [Zn.<T>, #<uimm5>*2].  */
 363   AARCH64_OPND_SVE_ADDR_ZI_U5x4,    /* SVE [Zn.<T>, #<uimm5>*4].  */
 364   AARCH64_OPND_SVE_ADDR_ZI_U5x8,    /* SVE [Zn.<T>, #<uimm5>*8].  */
 365   AARCH64_OPND_SVE_ADDR_ZZ_LSL,     /* SVE [Zn.<T>, Zm,<T>, LSL #<msz>].  */
 366   AARCH64_OPND_SVE_ADDR_ZZ_SXTW,    /* SVE [Zn.<T>, Zm,<T>, SXTW #<msz>].  */
 367   AARCH64_OPND_SVE_ADDR_ZZ_UXTW,    /* SVE [Zn.<T>, Zm,<T>, UXTW #<msz>].  */
 368   AARCH64_OPND_SVE_AIMM,        /* SVE unsigned arithmetic immediate.  */
 369   AARCH64_OPND_SVE_ASIMM,       /* SVE signed arithmetic immediate.  */
 370   AARCH64_OPND_SVE_FPIMM8,      /* SVE 8-bit floating-point immediate.  */
 371   AARCH64_OPND_SVE_I1_HALF_ONE, /* SVE choice between 0.5 and 1.0.  */
 372   AARCH64_OPND_SVE_I1_HALF_TWO, /* SVE choice between 0.5 and 2.0.  */
 373   AARCH64_OPND_SVE_I1_ZERO_ONE, /* SVE choice between 0.0 and 1.0.  */
 374   AARCH64_OPND_SVE_IMM_ROT1,    /* SVE 1-bit rotate operand (90 or 270).  */
 375   AARCH64_OPND_SVE_IMM_ROT2,    /* SVE 2-bit rotate operand (N*90).  */
 376   AARCH64_OPND_SVE_IMM_ROT3,    /* SVE cadd 1-bit rotate (90 or 270).  */
 377   AARCH64_OPND_SVE_INV_LIMM,    /* SVE inverted logical immediate.  */
 378   AARCH64_OPND_SVE_LIMM,        /* SVE logical immediate.  */
 379   AARCH64_OPND_SVE_LIMM_MOV,    /* SVE logical immediate for MOV.  */
 380   AARCH64_OPND_SVE_PATTERN,     /* SVE vector pattern enumeration.  */
 381   AARCH64_OPND_SVE_PATTERN_SCALED, /* Likewise, with additional MUL factor.  */
 382   AARCH64_OPND_SVE_PRFOP,       /* SVE prefetch operation.  */
 383   AARCH64_OPND_SVE_Pd,          /* SVE p0-p15 in Pd.  */
 384   AARCH64_OPND_SVE_Pg3,         /* SVE p0-p7 in Pg.  */
 385   AARCH64_OPND_SVE_Pg4_5,       /* SVE p0-p15 in Pg, bits [8,5].  */
 386   AARCH64_OPND_SVE_Pg4_10,      /* SVE p0-p15 in Pg, bits [13,10].  */
 387   AARCH64_OPND_SVE_Pg4_16,      /* SVE p0-p15 in Pg, bits [19,16].  */
 388   AARCH64_OPND_SVE_Pm,          /* SVE p0-p15 in Pm.  */
 389   AARCH64_OPND_SVE_Pn,          /* SVE p0-p15 in Pn.  */
 390   AARCH64_OPND_SVE_Pt,          /* SVE p0-p15 in Pt.  */
 391   AARCH64_OPND_SVE_Rm,          /* Integer Rm or ZR, alt. SVE position.  */
 392   AARCH64_OPND_SVE_Rn_SP,       /* Integer Rn or SP, alt. SVE position.  */
 393   AARCH64_OPND_SVE_SHLIMM_PRED,   /* SVE shift left amount (predicated).  */
 394   AARCH64_OPND_SVE_SHLIMM_UNPRED, /* SVE shift left amount (unpredicated).  */
 395   AARCH64_OPND_SVE_SHLIMM_UNPRED_22,    /* SVE 3 bit shift left unpred.  */
 396   AARCH64_OPND_SVE_SHRIMM_PRED,   /* SVE shift right amount (predicated).  */
 397   AARCH64_OPND_SVE_SHRIMM_UNPRED, /* SVE shift right amount (unpredicated).  */
 398   AARCH64_OPND_SVE_SHRIMM_UNPRED_22,    /* SVE 3 bit shift right unpred.  */
 399   AARCH64_OPND_SVE_SIMM5,       /* SVE signed 5-bit immediate.  */
 400   AARCH64_OPND_SVE_SIMM5B,      /* SVE secondary signed 5-bit immediate.  */
 401   AARCH64_OPND_SVE_SIMM6,       /* SVE signed 6-bit immediate.  */
 402   AARCH64_OPND_SVE_SIMM8,       /* SVE signed 8-bit immediate.  */
 403   AARCH64_OPND_SVE_UIMM3,       /* SVE unsigned 3-bit immediate.  */
 404   AARCH64_OPND_SVE_UIMM7,       /* SVE unsigned 7-bit immediate.  */
 405   AARCH64_OPND_SVE_UIMM8,       /* SVE unsigned 8-bit immediate.  */
 406   AARCH64_OPND_SVE_UIMM8_53,    /* SVE split unsigned 8-bit immediate.  */
 407   AARCH64_OPND_SVE_VZn,         /* Scalar SIMD&FP register in Zn field.  */
 408   AARCH64_OPND_SVE_Vd,          /* Scalar SIMD&FP register in Vd.  */
 409   AARCH64_OPND_SVE_Vm,          /* Scalar SIMD&FP register in Vm.  */
 410   AARCH64_OPND_SVE_Vn,          /* Scalar SIMD&FP register in Vn.  */
 411   AARCH64_OPND_SVE_Za_5,        /* SVE vector register in Za, bits [9,5].  */
 412   AARCH64_OPND_SVE_Za_16,       /* SVE vector register in Za, bits [20,16].  */
 413   AARCH64_OPND_SVE_Zd,          /* SVE vector register in Zd.  */
 414   AARCH64_OPND_SVE_Zm_5,        /* SVE vector register in Zm, bits [9,5].  */
 415   AARCH64_OPND_SVE_Zm_16,       /* SVE vector register in Zm, bits [20,16].  */
 416   AARCH64_OPND_SVE_Zm3_INDEX,   /* z0-z7[0-3] in Zm, bits [20,16].  */
 417   AARCH64_OPND_SVE_Zm3_22_INDEX, /* z0-z7[0-7] in Zm3_INDEX plus bit 22.  */
 418   AARCH64_OPND_SVE_Zm3_11_INDEX, /* z0-z7[0-7] in Zm3_INDEX plus bit 11.  */
 419   AARCH64_OPND_SVE_Zm4_11_INDEX, /* z0-z15[0-3] in Zm plus bit 11.  */
 420   AARCH64_OPND_SVE_Zm4_INDEX,   /* z0-z15[0-1] in Zm, bits [20,16].  */
 421   AARCH64_OPND_SVE_Zn,          /* SVE vector register in Zn.  */
 422   AARCH64_OPND_SVE_Zn_INDEX,    /* Indexed SVE vector register, for DUP.  */
 423   AARCH64_OPND_SVE_ZnxN,        /* SVE vector register list in Zn.  */
 424   AARCH64_OPND_SVE_Zt,          /* SVE vector register in Zt.  */
 425   AARCH64_OPND_SVE_ZtxN,        /* SVE vector register list in Zt.  */
 426   AARCH64_OPND_TME_UIMM16,      /* TME unsigned 16-bit immediate.  */
 427   AARCH64_OPND_SM3_IMM2,        /* SM3 encodes lane in bits [13, 14].  */
 428 };
 429
 430 /* Qualifier constrains an operand.  It either specifies a variant of an
 431    operand type or limits values available to an operand type.
 432
 433    N.B. Order is important; keep aarch64_opnd_qualifiers synced.  */
 434
 435 enum aarch64_opnd_qualifier
 436 {
 437   /* Indicating no further qualification on an operand.  */
 438   AARCH64_OPND_QLF_NIL,
 439
 440   /* Qualifying an operand which is a general purpose (integer) register;
 441      indicating the operand data size or a specific register.  */
 442   AARCH64_OPND_QLF_W,   /* Wn, WZR or WSP.  */
 443   AARCH64_OPND_QLF_X,   /* Xn, XZR or XSP.  */
 444   AARCH64_OPND_QLF_WSP, /* WSP.  */
 445   AARCH64_OPND_QLF_SP,  /* SP.  */
 446
 447   /* Qualifying an operand which is a floating-point register, a SIMD
 448      vector element or a SIMD vector element list; indicating operand data
 449      size or the size of each SIMD vector element in the case of a SIMD
 450      vector element list.
 451      These qualifiers are also used to qualify an address operand to
 452      indicate the size of data element a load/store instruction is
 453      accessing.
 454      They are also used for the immediate shift operand in e.g. SSHR.  Such
 455      a use is only for the ease of operand encoding/decoding and qualifier
 456      sequence matching; such a use should not be applied widely; use the value
 457      constraint qualifiers for immediate operands wherever possible.  */
 458   AARCH64_OPND_QLF_S_B,
 459   AARCH64_OPND_QLF_S_H,
 460   AARCH64_OPND_QLF_S_S,
 461   AARCH64_OPND_QLF_S_D,
 462   AARCH64_OPND_QLF_S_Q,
 463   /* This type qualifier has a special meaning in that it means that 4 x 1 byte
 464      are selected by the instruction.  Other than that it has no difference
 465      with AARCH64_OPND_QLF_S_B in encoding.  It is here purely for syntactical
 466      reasons and is an exception from normal AArch64 disassembly scheme.  */
 467   AARCH64_OPND_QLF_S_4B,
 468
 469   /* Qualifying an operand which is a SIMD vector register or a SIMD vector
 470      register list; indicating register shape.
 471      They are also used for the immediate shift operand in e.g. SSHR.  Such
 472      a use is only for the ease of operand encoding/decoding and qualifier
 473      sequence matching; such a use should not be applied widely; use the value
 474      constraint qualifiers for immediate operands wherever possible.  */
 475   AARCH64_OPND_QLF_V_4B,
 476   AARCH64_OPND_QLF_V_8B,
 477   AARCH64_OPND_QLF_V_16B,
 478   AARCH64_OPND_QLF_V_2H,
 479   AARCH64_OPND_QLF_V_4H,
 480   AARCH64_OPND_QLF_V_8H,
 481   AARCH64_OPND_QLF_V_2S,
 482   AARCH64_OPND_QLF_V_4S,
 483   AARCH64_OPND_QLF_V_1D,
 484   AARCH64_OPND_QLF_V_2D,
 485   AARCH64_OPND_QLF_V_1Q,
 486
 487   AARCH64_OPND_QLF_P_Z,
 488   AARCH64_OPND_QLF_P_M,
 489
 490   /* Used in scaled signed immediate that are scaled by a Tag granule
 491      like in stg, st2g, etc.   */
 492   AARCH64_OPND_QLF_imm_tag,
 493
 494   /* Constraint on value.  */
 495   AARCH64_OPND_QLF_CR,          /* CRn, CRm. */
 496   AARCH64_OPND_QLF_imm_0_7,
 497   AARCH64_OPND_QLF_imm_0_15,
 498   AARCH64_OPND_QLF_imm_0_31,
 499   AARCH64_OPND_QLF_imm_0_63,
 500   AARCH64_OPND_QLF_imm_1_32,
 501   AARCH64_OPND_QLF_imm_1_64,
 502
 503   /* Indicate whether an AdvSIMD modified immediate operand is shift-zeros
 504      or shift-ones.  */
 505   AARCH64_OPND_QLF_LSL,
 506   AARCH64_OPND_QLF_MSL,
 507
 508   /* Special qualifier helping retrieve qualifier information during the
 509      decoding time (currently not in use).  */
 510   AARCH64_OPND_QLF_RETRIEVE,
 511 };
 512 \f
 513 /* Instruction class.  */
 514
 515 enum aarch64_insn_class
 516 {
 517   addsub_carry,
 518   addsub_ext,
 519   addsub_imm,
 520   addsub_shift,
 521   asimdall,
 522   asimddiff,
 523   asimdelem,
 524   asimdext,
 525   asimdimm,
 526   asimdins,
 527   asimdmisc,
 528   asimdperm,
 529   asimdsame,
 530   asimdshf,
 531   asimdtbl,
 532   asisddiff,
 533   asisdelem,
 534   asisdlse,
 535   asisdlsep,
 536   asisdlso,
 537   asisdlsop,
 538   asisdmisc,
 539   asisdone,
 540   asisdpair,
 541   asisdsame,
 542   asisdshf,
 543   bitfield,
 544   branch_imm,
 545   branch_reg,
 546   compbranch,
 547   condbranch,
 548   condcmp_imm,
 549   condcmp_reg,
 550   condsel,
 551   cryptoaes,
 552   cryptosha2,
 553   cryptosha3,
 554   dp_1src,
 555   dp_2src,
 556   dp_3src,
 557   exception,
 558   extract,
 559   float2fix,
 560   float2int,
 561   floatccmp,
 562   floatcmp,
 563   floatdp1,
 564   floatdp2,
 565   floatdp3,
 566   floatimm,
 567   floatsel,
 568   ldst_immpost,
 569   ldst_immpre,
 570   ldst_imm9,    /* immpost or immpre */
 571   ldst_imm10,   /* LDRAA/LDRAB */
 572   ldst_pos,
 573   ldst_regoff,
 574   ldst_unpriv,
 575   ldst_unscaled,
 576   ldstexcl,
 577   ldstnapair_offs,
 578   ldstpair_off,
 579   ldstpair_indexed,
 580   loadlit,
 581   log_imm,
 582   log_shift,
 583   lse_atomic,
 584   movewide,
 585   pcreladdr,
 586   ic_system,
 587   sve_cpy,
 588   sve_index,
 589   sve_limm,
 590   sve_misc,
 591   sve_movprfx,
 592   sve_pred_zm,
 593   sve_shift_pred,
 594   sve_shift_unpred,
 595   sve_size_bhs,
 596   sve_size_bhsd,
 597   sve_size_hsd,
 598   sve_size_hsd2,
 599   sve_size_sd,
 600   sve_size_bh,
 601   sve_size_sd2,
 602   sve_size_013,
 603   sve_shift_tsz_hsd,
 604   sve_shift_tsz_bhsd,
 605   sve_size_tsz_bhs,
 606   testbranch,
 607   cryptosm3,
 608   cryptosm4,
 609   dotproduct,
 610 };
 611
 612 /* Opcode enumerators.  */
 613
 614 enum aarch64_op
 615 {
 616   OP_NIL,
 617   OP_STRB_POS,
 618   OP_LDRB_POS,
 619   OP_LDRSB_POS,
 620   OP_STRH_POS,
 621   OP_LDRH_POS,
 622   OP_LDRSH_POS,
 623   OP_STR_POS,
 624   OP_LDR_POS,
 625   OP_STRF_POS,
 626   OP_LDRF_POS,
 627   OP_LDRSW_POS,
 628   OP_PRFM_POS,
 629
 630   OP_STURB,
 631   OP_LDURB,
 632   OP_LDURSB,
 633   OP_STURH,
 634   OP_LDURH,
 635   OP_LDURSH,
 636   OP_STUR,
 637   OP_LDUR,
 638   OP_STURV,
 639   OP_LDURV,
 640   OP_LDURSW,
 641   OP_PRFUM,
 642
 643   OP_LDR_LIT,
 644   OP_LDRV_LIT,
 645   OP_LDRSW_LIT,
 646   OP_PRFM_LIT,
 647
 648   OP_ADD,
 649   OP_B,
 650   OP_BL,
 651
 652   OP_MOVN,
 653   OP_MOVZ,
 654   OP_MOVK,
 655
 656   OP_MOV_IMM_LOG,       /* MOV alias for moving bitmask immediate.  */
 657   OP_MOV_IMM_WIDE,      /* MOV alias for moving wide immediate.  */
 658   OP_MOV_IMM_WIDEN,     /* MOV alias for moving wide immediate (negated).  */
 659
 660   OP_MOV_V,             /* MOV alias for moving vector register.  */
 661
 662   OP_ASR_IMM,
 663   OP_LSR_IMM,
 664   OP_LSL_IMM,
 665
 666   OP_BIC,
 667
 668   OP_UBFX,
 669   OP_BFXIL,
 670   OP_SBFX,
 671   OP_SBFIZ,
 672   OP_BFI,
 673   OP_BFC,               /* ARMv8.2.  */
 674   OP_UBFIZ,
 675   OP_UXTB,
 676   OP_UXTH,
 677   OP_UXTW,
 678
 679   OP_CINC,
 680   OP_CINV,
 681   OP_CNEG,
 682   OP_CSET,
 683   OP_CSETM,
 684
 685   OP_FCVT,
 686   OP_FCVTN,
 687   OP_FCVTN2,
 688   OP_FCVTL,
 689   OP_FCVTL2,
 690   OP_FCVTXN_S,          /* Scalar version.  */
 691
 692   OP_ROR_IMM,
 693
 694   OP_SXTL,
 695   OP_SXTL2,
 696   OP_UXTL,
 697   OP_UXTL2,
 698
 699   OP_MOV_P_P,
 700   OP_MOV_Z_P_Z,
 701   OP_MOV_Z_V,
 702   OP_MOV_Z_Z,
 703   OP_MOV_Z_Zi,
 704   OP_MOVM_P_P_P,
 705   OP_MOVS_P_P,
 706   OP_MOVZS_P_P_P,
 707   OP_MOVZ_P_P_P,
 708   OP_NOTS_P_P_P_Z,
 709   OP_NOT_P_P_P_Z,
 710
 711   OP_FCMLA_ELEM,        /* ARMv8.3, indexed element version.  */
 712
 713   OP_TOTAL_NUM,         /* Pseudo.  */
 714 };
 715
 716 /* Error types.  */
 717 enum err_type
 718 {
 719   ERR_OK,
 720   ERR_UND,
 721   ERR_UNP,
 722   ERR_NYI,
 723   ERR_VFI,
 724   ERR_NR_ENTRIES
 725 };
 726
 727 /* Maximum number of operands an instruction can have.  */
 728 #define AARCH64_MAX_OPND_NUM 6
 729 /* Maximum number of qualifier sequences an instruction can have.  */
 730 #define AARCH64_MAX_QLF_SEQ_NUM 10
 731 /* Operand qualifier typedef; optimized for the size.  */
 732 typedef unsigned char aarch64_opnd_qualifier_t;
 733 /* Operand qualifier sequence typedef.  */
 734 typedef aarch64_opnd_qualifier_t        \
 735           aarch64_opnd_qualifier_seq_t [AARCH64_MAX_OPND_NUM];
 736
 737 /* FIXME: improve the efficiency.  */
 738 static inline bfd_boolean
 739 empty_qualifier_sequence_p (const aarch64_opnd_qualifier_t *qualifiers)
 740 {
 741   int i;
 742   for (i = 0; i < AARCH64_MAX_OPND_NUM; ++i)
 743     if (qualifiers[i] != AARCH64_OPND_QLF_NIL)
 744       return FALSE;
 745   return TRUE;
 746 }
 747
 748 /*  Forward declare error reporting type.  */
 749 typedef struct aarch64_operand_error aarch64_operand_error;
 750 /* Forward declare instruction sequence type.  */
 751 typedef struct aarch64_instr_sequence aarch64_instr_sequence;
 752 /* Forward declare instruction definition.  */
 753 typedef struct aarch64_inst aarch64_inst;
 754
 755 /* This structure holds information for a particular opcode.  */
 756
 757 struct aarch64_opcode
 758 {
 759   /* The name of the mnemonic.  */
 760   const char *name;
 761
 762   /* The opcode itself.  Those bits which will be filled in with
 763      operands are zeroes.  */
 764   aarch64_insn opcode;
 765
 766   /* The opcode mask.  This is used by the disassembler.  This is a
 767      mask containing ones indicating those bits which must match the
 768      opcode field, and zeroes indicating those bits which need not
 769      match (and are presumably filled in by operands).  */
 770   aarch64_insn mask;
 771
 772   /* Instruction class.  */
 773   enum aarch64_insn_class iclass;
 774
 775   /* Enumerator identifier.  */
 776   enum aarch64_op op;
 777
 778   /* Which architecture variant provides this instruction.  */
 779   const aarch64_feature_set *avariant;
 780
 781   /* An array of operand codes.  Each code is an index into the
 782      operand table.  They appear in the order which the operands must
 783      appear in assembly code, and are terminated by a zero.  */
 784   enum aarch64_opnd operands[AARCH64_MAX_OPND_NUM];
 785
 786   /* A list of operand qualifier code sequence.  Each operand qualifier
 787      code qualifies the corresponding operand code.  Each operand
 788      qualifier sequence specifies a valid opcode variant and related
 789      constraint on operands.  */
 790   aarch64_opnd_qualifier_seq_t qualifiers_list[AARCH64_MAX_QLF_SEQ_NUM];
 791
 792   /* Flags providing information about this instruction */
 793   uint64_t flags;
 794
 795   /* Extra constraints on the instruction that the verifier checks.  */
 796   uint32_t constraints;
 797
 798   /* If nonzero, this operand and operand 0 are both registers and
 799      are required to have the same register number.  */
 800   unsigned char tied_operand;
 801
 802   /* If non-NULL, a function to verify that a given instruction is valid.  */
 803   enum err_type (* verifier) (const struct aarch64_inst *, const aarch64_insn,
 804                               bfd_vma, bfd_boolean, aarch64_operand_error *,
 805                               struct aarch64_instr_sequence *);
 806 };
 807
 808 typedef struct aarch64_opcode aarch64_opcode;
 809
 810 /* Table describing all the AArch64 opcodes.  */
 811 extern aarch64_opcode aarch64_opcode_table[];
 812
 813 /* Opcode flags.  */
 814 #define F_ALIAS (1 << 0)
 815 #define F_HAS_ALIAS (1 << 1)
 816 /* Disassembly preference priority 1-3 (the larger the higher).  If nothing
 817    is specified, it is the priority 0 by default, i.e. the lowest priority.  */
 818 #define F_P1 (1 << 2)
 819 #define F_P2 (2 << 2)
 820 #define F_P3 (3 << 2)
 821 /* Flag an instruction that is truly conditional executed, e.g. b.cond.  */
 822 #define F_COND (1 << 4)
 823 /* Instruction has the field of 'sf'.  */
 824 #define F_SF (1 << 5)
 825 /* Instruction has the field of 'size:Q'.  */
 826 #define F_SIZEQ (1 << 6)
 827 /* Floating-point instruction has the field of 'type'.  */
 828 #define F_FPTYPE (1 << 7)
 829 /* AdvSIMD scalar instruction has the field of 'size'.  */
 830 #define F_SSIZE (1 << 8)
 831 /* AdvSIMD vector register arrangement specifier encoded in "imm5<3:0>:Q".  */
 832 #define F_T (1 << 9)
 833 /* Size of GPR operand in AdvSIMD instructions encoded in Q.  */
 834 #define F_GPRSIZE_IN_Q (1 << 10)
 835 /* Size of Rt load signed instruction encoded in opc[0], i.e. bit 22.  */
 836 #define F_LDS_SIZE (1 << 11)
 837 /* Optional operand; assume maximum of 1 operand can be optional.  */
 838 #define F_OPD0_OPT (1 << 12)
 839 #define F_OPD1_OPT (2 << 12)
 840 #define F_OPD2_OPT (3 << 12)
 841 #define F_OPD3_OPT (4 << 12)
 842 #define F_OPD4_OPT (5 << 12)
 843 /* Default value for the optional operand when omitted from the assembly.  */
 844 #define F_DEFAULT(X) (((X) & 0x1f) << 15)
 845 /* Instruction that is an alias of another instruction needs to be
 846    encoded/decoded by converting it to/from the real form, followed by
 847    the encoding/decoding according to the rules of the real opcode.
 848    This compares to the direct coding using the alias's information.
 849    N.B. this flag requires F_ALIAS to be used together.  */
 850 #define F_CONV (1 << 20)
 851 /* Use together with F_ALIAS to indicate an alias opcode is a programmer
 852    friendly pseudo instruction available only in the assembly code (thus will
 853    not show up in the disassembly).  */
 854 #define F_PSEUDO (1 << 21)
 855 /* Instruction has miscellaneous encoding/decoding rules.  */
 856 #define F_MISC (1 << 22)
 857 /* Instruction has the field of 'N'; used in conjunction with F_SF.  */
 858 #define F_N (1 << 23)
 859 /* Opcode dependent field.  */
 860 #define F_OD(X) (((X) & 0x7) << 24)
 861 /* Instruction has the field of 'sz'.  */
 862 #define F_LSE_SZ (1 << 27)
 863 /* Require an exact qualifier match, even for NIL qualifiers.  */
 864 #define F_STRICT (1ULL << 28)
 865 /* This system instruction is used to read system registers.  */
 866 #define F_SYS_READ (1ULL << 29)
 867 /* This system instruction is used to write system registers.  */
 868 #define F_SYS_WRITE (1ULL << 30)
 869 /* This instruction has an extra constraint on it that imposes a requirement on
 870    subsequent instructions.  */
 871 #define F_SCAN (1ULL << 31)
 872 /* Next bit is 32.  */
 873
 874 /* Instruction constraints.  */
 875 /* This instruction has a predication constraint on the instruction at PC+4.  */
 876 #define C_SCAN_MOVPRFX (1U << 0)
 877 /* This instruction's operation width is determined by the operand with the
 878    largest element size.  */
 879 #define C_MAX_ELEM (1U << 1)
 880 /* Next bit is 2.  */
 881
 882 static inline bfd_boolean
 883 alias_opcode_p (const aarch64_opcode *opcode)
 884 {
 885   return (opcode->flags & F_ALIAS) ? TRUE : FALSE;
 886 }
 887
 888 static inline bfd_boolean
 889 opcode_has_alias (const aarch64_opcode *opcode)
 890 {
 891   return (opcode->flags & F_HAS_ALIAS) ? TRUE : FALSE;
 892 }
 893
 894 /* Priority for disassembling preference.  */
 895 static inline int
 896 opcode_priority (const aarch64_opcode *opcode)
 897 {
 898   return (opcode->flags >> 2) & 0x3;
 899 }
 900
 901 static inline bfd_boolean
 902 pseudo_opcode_p (const aarch64_opcode *opcode)
 903 {
 904   return (opcode->flags & F_PSEUDO) != 0lu ? TRUE : FALSE;
 905 }
 906
 907 static inline bfd_boolean
 908 optional_operand_p (const aarch64_opcode *opcode, unsigned int idx)
 909 {
 910   return (((opcode->flags >> 12) & 0x7) == idx + 1)
 911     ? TRUE : FALSE;
 912 }
 913
 914 static inline aarch64_insn
 915 get_optional_operand_default_value (const aarch64_opcode *opcode)
 916 {
 917   return (opcode->flags >> 15) & 0x1f;
 918 }
 919
 920 static inline unsigned int
 921 get_opcode_dependent_value (const aarch64_opcode *opcode)
 922 {
 923   return (opcode->flags >> 24) & 0x7;
 924 }
 925
 926 static inline bfd_boolean
 927 opcode_has_special_coder (const aarch64_opcode *opcode)
 928 {
 929   return (opcode->flags & (F_SF | F_LSE_SZ | F_SIZEQ | F_FPTYPE | F_SSIZE | F_T
 930           | F_GPRSIZE_IN_Q | F_LDS_SIZE | F_MISC | F_N | F_COND)) ? TRUE
 931     : FALSE;
 932 }
 933 \f
 934 struct aarch64_name_value_pair
 935 {
 936   const char *  name;
 937   aarch64_insn  value;
 938 };
 939
 940 extern const struct aarch64_name_value_pair aarch64_operand_modifiers [];
 941 extern const struct aarch64_name_value_pair aarch64_barrier_options [16];
 942 extern const struct aarch64_name_value_pair aarch64_prfops [32];
 943 extern const struct aarch64_name_value_pair aarch64_hint_options [];
 944
 945 typedef struct
 946 {
 947   const char *  name;
 948   aarch64_insn  value;
 949   uint32_t      flags;
 950 } aarch64_sys_reg;
 951
 952 extern const aarch64_sys_reg aarch64_sys_regs [];
 953 extern const aarch64_sys_reg aarch64_pstatefields [];
 954 extern bfd_boolean aarch64_sys_reg_deprecated_p (const aarch64_sys_reg *);
 955 extern bfd_boolean aarch64_sys_reg_supported_p (const aarch64_feature_set,
 956                                                 const aarch64_sys_reg *);
 957 extern bfd_boolean aarch64_pstatefield_supported_p (const aarch64_feature_set,
 958                                                     const aarch64_sys_reg *);
 959
 960 typedef struct
 961 {
 962   const char *name;
 963   uint32_t value;
 964   uint32_t flags ;
 965 } aarch64_sys_ins_reg;
 966
 967 extern bfd_boolean aarch64_sys_ins_reg_has_xt (const aarch64_sys_ins_reg *);
 968 extern bfd_boolean
 969 aarch64_sys_ins_reg_supported_p (const aarch64_feature_set,
 970                                  const aarch64_sys_ins_reg *);
 971
 972 extern const aarch64_sys_ins_reg aarch64_sys_regs_ic [];
 973 extern const aarch64_sys_ins_reg aarch64_sys_regs_dc [];
 974 extern const aarch64_sys_ins_reg aarch64_sys_regs_at [];
 975 extern const aarch64_sys_ins_reg aarch64_sys_regs_tlbi [];
 976 extern const aarch64_sys_ins_reg aarch64_sys_regs_sr [];
 977
 978 /* Shift/extending operator kinds.
 979    N.B. order is important; keep aarch64_operand_modifiers synced.  */
 980 enum aarch64_modifier_kind
 981 {
 982   AARCH64_MOD_NONE,
 983   AARCH64_MOD_MSL,
 984   AARCH64_MOD_ROR,
 985   AARCH64_MOD_ASR,
 986   AARCH64_MOD_LSR,
 987   AARCH64_MOD_LSL,
 988   AARCH64_MOD_UXTB,
 989   AARCH64_MOD_UXTH,
 990   AARCH64_MOD_UXTW,
 991   AARCH64_MOD_UXTX,
 992   AARCH64_MOD_SXTB,
 993   AARCH64_MOD_SXTH,
 994   AARCH64_MOD_SXTW,
 995   AARCH64_MOD_SXTX,
 996   AARCH64_MOD_MUL,
 997   AARCH64_MOD_MUL_VL,
 998 };
 999
1000 bfd_boolean
1001 aarch64_extend_operator_p (enum aarch64_modifier_kind);
1002
1003 enum aarch64_modifier_kind
1004 aarch64_get_operand_modifier (const struct aarch64_name_value_pair *);
1005 /* Condition.  */
1006
1007 typedef struct
1008 {
1009   /* A list of names with the first one as the disassembly preference;
1010      terminated by NULL if fewer than 3.  */
1011   const char *names[4];
1012   aarch64_insn value;
1013 } aarch64_cond;
1014
1015 extern const aarch64_cond aarch64_conds[16];
1016
1017 const aarch64_cond* get_cond_from_value (aarch64_insn value);
1018 const aarch64_cond* get_inverted_cond (const aarch64_cond *cond);
1019 \f
1020 /* Structure representing an operand.  */
1021
1022 struct aarch64_opnd_info
1023 {
1024   enum aarch64_opnd type;
1025   aarch64_opnd_qualifier_t qualifier;
1026   int idx;
1027
1028   union
1029     {
1030       struct
1031         {
1032           unsigned regno;
1033         } reg;
1034       struct
1035         {
1036           unsigned int regno;
1037           int64_t index;
1038         } reglane;
1039       /* e.g. LVn.  */
1040       struct
1041         {
1042           unsigned first_regno : 5;
1043           unsigned num_regs : 3;
1044           /* 1 if it is a list of reg element.  */
1045           unsigned has_index : 1;
1046           /* Lane index; valid only when has_index is 1.  */
1047           int64_t index;
1048         } reglist;
1049       /* e.g. immediate or pc relative address offset.  */
1050       struct
1051         {
1052           int64_t value;
1053           unsigned is_fp : 1;
1054         } imm;
1055       /* e.g. address in STR (register offset).  */
1056       struct
1057         {
1058           unsigned base_regno;
1059           struct
1060             {
1061               union
1062                 {
1063                   int imm;
1064                   unsigned regno;
1065                 };
1066               unsigned is_reg;
1067             } offset;
1068           unsigned pcrel : 1;           /* PC-relative.  */
1069           unsigned writeback : 1;
1070           unsigned preind : 1;          /* Pre-indexed.  */
1071           unsigned postind : 1;         /* Post-indexed.  */
1072         } addr;
1073
1074       struct
1075         {
1076           /* The encoding of the system register.  */
1077           aarch64_insn value;
1078
1079           /* The system register flags.  */
1080           uint32_t flags;
1081         } sysreg;
1082
1083       const aarch64_cond *cond;
1084       /* The encoding of the PSTATE field.  */
1085       aarch64_insn pstatefield;
1086       const aarch64_sys_ins_reg *sysins_op;
1087       const struct aarch64_name_value_pair *barrier;
1088       const struct aarch64_name_value_pair *hint_option;
1089       const struct aarch64_name_value_pair *prfop;
1090     };
1091
1092   /* Operand shifter; in use when the operand is a register offset address,
1093      add/sub extended reg, etc. e.g. <R><m>{, <extend> {#<amount>}}.  */
1094   struct
1095     {
1096       enum aarch64_modifier_kind kind;
1097       unsigned operator_present: 1;     /* Only valid during encoding.  */
1098       /* Value of the 'S' field in ld/st reg offset; used only in decoding.  */
1099       unsigned amount_present: 1;
1100       int64_t amount;
1101     } shifter;
1102
1103   unsigned skip:1;      /* Operand is not completed if there is a fixup needed
1104                            to be done on it.  In some (but not all) of these
1105                            cases, we need to tell libopcodes to skip the
1106                            constraint checking and the encoding for this
1107                            operand, so that the libopcodes can pick up the
1108                            right opcode before the operand is fixed-up.  This
1109                            flag should only be used during the
1110                            assembling/encoding.  */
1111   unsigned present:1;   /* Whether this operand is present in the assembly
1112                            line; not used during the disassembly.  */
1113 };
1114
1115 typedef struct aarch64_opnd_info aarch64_opnd_info;
1116
1117 /* Structure representing an instruction.
1118
1119    It is used during both the assembling and disassembling.  The assembler
1120    fills an aarch64_inst after a successful parsing and then passes it to the
1121    encoding routine to do the encoding.  During the disassembling, the
1122    disassembler calls the decoding routine to decode a binary instruction; on a
1123    successful return, such a structure will be filled with information of the
1124    instruction; then the disassembler uses the information to print out the
1125    instruction.  */
1126
1127 struct aarch64_inst
1128 {
1129   /* The value of the binary instruction.  */
1130   aarch64_insn value;
1131
1132   /* Corresponding opcode entry.  */
1133   const aarch64_opcode *opcode;
1134
1135   /* Condition for a truly conditional-executed instrutions, e.g. b.cond.  */
1136   const aarch64_cond *cond;
1137
1138   /* Operands information.  */
1139   aarch64_opnd_info operands[AARCH64_MAX_OPND_NUM];
1140 };
1141
1142 /* Defining the HINT #imm values for the aarch64_hint_options.  */
1143 #define HINT_OPD_CSYNC  0x11
1144 #define HINT_OPD_C      0x22
1145 #define HINT_OPD_J      0x24
1146 #define HINT_OPD_JC     0x26
1147 #define HINT_OPD_NULL   0x00
1148
1149 \f
1150 /* Diagnosis related declaration and interface.  */
1151
1152 /* Operand error kind enumerators.
1153
1154    AARCH64_OPDE_RECOVERABLE
1155      Less severe error found during the parsing, very possibly because that
1156      GAS has picked up a wrong instruction template for the parsing.
1157
1158    AARCH64_OPDE_SYNTAX_ERROR
1159      General syntax error; it can be either a user error, or simply because
1160      that GAS is trying a wrong instruction template.
1161
1162    AARCH64_OPDE_FATAL_SYNTAX_ERROR
1163      Definitely a user syntax error.
1164
1165    AARCH64_OPDE_INVALID_VARIANT
1166      No syntax error, but the operands are not a valid combination, e.g.
1167      FMOV D0,S0
1168
1169    AARCH64_OPDE_UNTIED_OPERAND
1170      The asm failed to use the same register for a destination operand
1171      and a tied source operand.
1172
1173    AARCH64_OPDE_OUT_OF_RANGE
1174      Error about some immediate value out of a valid range.
1175
1176    AARCH64_OPDE_UNALIGNED
1177      Error about some immediate value not properly aligned (i.e. not being a
1178      multiple times of a certain value).
1179
1180    AARCH64_OPDE_REG_LIST
1181      Error about the register list operand having unexpected number of
1182      registers.
1183
1184    AARCH64_OPDE_OTHER_ERROR
1185      Error of the highest severity and used for any severe issue that does not
1186      fall into any of the above categories.
1187
1188    The enumerators are only interesting to GAS.  They are declared here (in
1189    libopcodes) because that some errors are detected (and then notified to GAS)
1190    by libopcodes (rather than by GAS solely).
1191
1192    The first three errors are only deteced by GAS while the
1193    AARCH64_OPDE_INVALID_VARIANT error can only be spotted by libopcodes as
1194    only libopcodes has the information about the valid variants of each
1195    instruction.
1196
1197    The enumerators have an increasing severity.  This is helpful when there are
1198    multiple instruction templates available for a given mnemonic name (e.g.
1199    FMOV); this mechanism will help choose the most suitable template from which
1200    the generated diagnostics can most closely describe the issues, if any.  */
1201
1202 enum aarch64_operand_error_kind
1203 {
1204   AARCH64_OPDE_NIL,
1205   AARCH64_OPDE_RECOVERABLE,
1206   AARCH64_OPDE_SYNTAX_ERROR,
1207   AARCH64_OPDE_FATAL_SYNTAX_ERROR,
1208   AARCH64_OPDE_INVALID_VARIANT,
1209   AARCH64_OPDE_UNTIED_OPERAND,
1210   AARCH64_OPDE_OUT_OF_RANGE,
1211   AARCH64_OPDE_UNALIGNED,
1212   AARCH64_OPDE_REG_LIST,
1213   AARCH64_OPDE_OTHER_ERROR
1214 };
1215
1216 /* N.B. GAS assumes that this structure work well with shallow copy.  */
1217 struct aarch64_operand_error
1218 {
1219   enum aarch64_operand_error_kind kind;
1220   int index;
1221   const char *error;
1222   int data[3];  /* Some data for extra information.  */
1223   bfd_boolean non_fatal;
1224 };
1225
1226 /* AArch64 sequence structure used to track instructions with F_SCAN
1227    dependencies for both assembler and disassembler.  */
1228 struct aarch64_instr_sequence
1229 {
1230   /* The instruction that caused this sequence to be opened.  */
1231   aarch64_inst *instr;
1232   /* The number of instructions the above instruction allows to be kept in the
1233      sequence before an automatic close is done.  */
1234   int num_insns;
1235   /* The instructions currently added to the sequence.  */
1236   aarch64_inst **current_insns;
1237   /* The number of instructions already in the sequence.  */
1238   int next_insn;
1239 };
1240
1241 /* Encoding entrypoint.  */
1242
1243 extern int
1244 aarch64_opcode_encode (const aarch64_opcode *, const aarch64_inst *,
1245                        aarch64_insn *, aarch64_opnd_qualifier_t *,
1246                        aarch64_operand_error *, aarch64_instr_sequence *);
1247
1248 extern const aarch64_opcode *
1249 aarch64_replace_opcode (struct aarch64_inst *,
1250                         const aarch64_opcode *);
1251
1252 /* Given the opcode enumerator OP, return the pointer to the corresponding
1253    opcode entry.  */
1254
1255 extern const aarch64_opcode *
1256 aarch64_get_opcode (enum aarch64_op);
1257
1258 /* Generate the string representation of an operand.  */
1259 extern void
1260 aarch64_print_operand (char *, size_t, bfd_vma, const aarch64_opcode *,
1261                        const aarch64_opnd_info *, int, int *, bfd_vma *,
1262                        char **);
1263
1264 /* Miscellaneous interface.  */
1265
1266 extern int
1267 aarch64_operand_index (const enum aarch64_opnd *, enum aarch64_opnd);
1268
1269 extern aarch64_opnd_qualifier_t
1270 aarch64_get_expected_qualifier (const aarch64_opnd_qualifier_seq_t *, int,
1271                                 const aarch64_opnd_qualifier_t, int);
1272
1273 extern bfd_boolean
1274 aarch64_is_destructive_by_operands (const aarch64_opcode *);
1275
1276 extern int
1277 aarch64_num_of_operands (const aarch64_opcode *);
1278
1279 extern int
1280 aarch64_stack_pointer_p (const aarch64_opnd_info *);
1281
1282 extern int
1283 aarch64_zero_register_p (const aarch64_opnd_info *);
1284
1285 extern enum err_type
1286 aarch64_decode_insn (aarch64_insn, aarch64_inst *, bfd_boolean,
1287                      aarch64_operand_error *);
1288
1289 extern void
1290 init_insn_sequence (const struct aarch64_inst *, aarch64_instr_sequence *);
1291
1292 /* Given an operand qualifier, return the expected data element size
1293    of a qualified operand.  */
1294 extern unsigned char
1295 aarch64_get_qualifier_esize (aarch64_opnd_qualifier_t);
1296
1297 extern enum aarch64_operand_class
1298 aarch64_get_operand_class (enum aarch64_opnd);
1299
1300 extern const char *
1301 aarch64_get_operand_name (enum aarch64_opnd);
1302
1303 extern const char *
1304 aarch64_get_operand_desc (enum aarch64_opnd);
1305
1306 extern bfd_boolean
1307 aarch64_sve_dupm_mov_immediate_p (uint64_t, int);
1308
1309 #ifdef DEBUG_AARCH64
1310 extern int debug_dump;
1311
1312 extern void
1313 aarch64_verbose (const char *, ...) __attribute__ ((format (printf, 1, 2)));
1314
1315 #define DEBUG_TRACE(M, ...)                                     \
1316   {                                                             \
1317     if (debug_dump)                                             \
1318       aarch64_verbose ("%s: " M ".", __func__, ##__VA_ARGS__);  \
1319   }
1320
1321 #define DEBUG_TRACE_IF(C, M, ...)                               \
1322   {                                                             \
1323     if (debug_dump && (C))                                      \
1324       aarch64_verbose ("%s: " M ".", __func__, ##__VA_ARGS__);  \
1325   }
1326 #else  /* !DEBUG_AARCH64 */
1327 #define DEBUG_TRACE(M, ...) ;
1328 #define DEBUG_TRACE_IF(C, M, ...) ;
1329 #endif /* DEBUG_AARCH64 */
1330
1331 extern const char *const aarch64_sve_pattern_array[32];
1332 extern const char *const aarch64_sve_prfop_array[16];
1333
1334 #ifdef __cplusplus
1335 }
1336 #endif
1337
1338 #endif /* OPCODE_AARCH64_H */