933 lines
28 KiB
C
933 lines
28 KiB
C
/* AArch64 assembler/disassembler support.
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Copyright 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
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Contributed by ARM Ltd.
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This file is part of GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the license, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING3. If not,
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see <http://www.gnu.org/licenses/>. */
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#ifndef OPCODE_AARCH64_H
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#define OPCODE_AARCH64_H
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#include "bfd.h"
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#include "bfd_stdint.h"
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#include <assert.h>
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#include <stdlib.h>
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/* The offset for pc-relative addressing is currently defined to be 0. */
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#define AARCH64_PCREL_OFFSET 0
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typedef uint32_t aarch64_insn;
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/* The following bitmasks control CPU features. */
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#define AARCH64_FEATURE_V8 0x00000001 /* All processors. */
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#define AARCH64_FEATURE_CRYPTO 0x00010000 /* Crypto instructions. */
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#define AARCH64_FEATURE_FP 0x00020000 /* FP instructions. */
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#define AARCH64_FEATURE_SIMD 0x00040000 /* SIMD instructions. */
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#define AARCH64_FEATURE_CRC 0x00080000 /* CRC instructions. */
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/* Architectures are the sum of the base and extensions. */
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#define AARCH64_ARCH_V8 AARCH64_FEATURE (AARCH64_FEATURE_V8, \
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AARCH64_FEATURE_FP \
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| AARCH64_FEATURE_SIMD)
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#define AARCH64_ARCH_NONE AARCH64_FEATURE (0, 0)
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#define AARCH64_ANY AARCH64_FEATURE (-1, 0) /* Any basic core. */
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/* CPU-specific features. */
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typedef unsigned long aarch64_feature_set;
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#define AARCH64_CPU_HAS_FEATURE(CPU,FEAT) \
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(((CPU) & (FEAT)) != 0)
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#define AARCH64_MERGE_FEATURE_SETS(TARG,F1,F2) \
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do \
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{ \
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(TARG) = (F1) | (F2); \
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} \
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while (0)
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#define AARCH64_CLEAR_FEATURE(TARG,F1,F2) \
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do \
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{ \
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(TARG) = (F1) &~ (F2); \
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} \
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while (0)
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#define AARCH64_FEATURE(core,coproc) ((core) | (coproc))
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#define AARCH64_OPCODE_HAS_FEATURE(OPC,FEAT) \
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(((OPC) & (FEAT)) != 0)
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enum aarch64_operand_class
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{
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AARCH64_OPND_CLASS_NIL,
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AARCH64_OPND_CLASS_INT_REG,
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AARCH64_OPND_CLASS_MODIFIED_REG,
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AARCH64_OPND_CLASS_FP_REG,
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AARCH64_OPND_CLASS_SIMD_REG,
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AARCH64_OPND_CLASS_SIMD_ELEMENT,
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AARCH64_OPND_CLASS_SISD_REG,
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AARCH64_OPND_CLASS_SIMD_REGLIST,
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AARCH64_OPND_CLASS_CP_REG,
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AARCH64_OPND_CLASS_ADDRESS,
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AARCH64_OPND_CLASS_IMMEDIATE,
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AARCH64_OPND_CLASS_SYSTEM,
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};
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/* Operand code that helps both parsing and coding.
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Keep AARCH64_OPERANDS synced. */
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enum aarch64_opnd
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{
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AARCH64_OPND_NIL, /* no operand---MUST BE FIRST!*/
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AARCH64_OPND_Rd, /* Integer register as destination. */
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AARCH64_OPND_Rn, /* Integer register as source. */
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AARCH64_OPND_Rm, /* Integer register as source. */
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AARCH64_OPND_Rt, /* Integer register used in ld/st instructions. */
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AARCH64_OPND_Rt2, /* Integer register used in ld/st pair instructions. */
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AARCH64_OPND_Rs, /* Integer register used in ld/st exclusive. */
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AARCH64_OPND_Ra, /* Integer register used in ddp_3src instructions. */
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AARCH64_OPND_Rt_SYS, /* Integer register used in system instructions. */
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AARCH64_OPND_Rd_SP, /* Integer Rd or SP. */
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AARCH64_OPND_Rn_SP, /* Integer Rn or SP. */
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AARCH64_OPND_Rm_EXT, /* Integer Rm extended. */
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AARCH64_OPND_Rm_SFT, /* Integer Rm shifted. */
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AARCH64_OPND_Fd, /* Floating-point Fd. */
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AARCH64_OPND_Fn, /* Floating-point Fn. */
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AARCH64_OPND_Fm, /* Floating-point Fm. */
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AARCH64_OPND_Fa, /* Floating-point Fa. */
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AARCH64_OPND_Ft, /* Floating-point Ft. */
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AARCH64_OPND_Ft2, /* Floating-point Ft2. */
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AARCH64_OPND_Sd, /* AdvSIMD Scalar Sd. */
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AARCH64_OPND_Sn, /* AdvSIMD Scalar Sn. */
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AARCH64_OPND_Sm, /* AdvSIMD Scalar Sm. */
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AARCH64_OPND_Vd, /* AdvSIMD Vector Vd. */
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AARCH64_OPND_Vn, /* AdvSIMD Vector Vn. */
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AARCH64_OPND_Vm, /* AdvSIMD Vector Vm. */
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AARCH64_OPND_VdD1, /* AdvSIMD <Vd>.D[1]; for FMOV only. */
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AARCH64_OPND_VnD1, /* AdvSIMD <Vn>.D[1]; for FMOV only. */
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AARCH64_OPND_Ed, /* AdvSIMD Vector Element Vd. */
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AARCH64_OPND_En, /* AdvSIMD Vector Element Vn. */
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AARCH64_OPND_Em, /* AdvSIMD Vector Element Vm. */
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AARCH64_OPND_LVn, /* AdvSIMD Vector register list used in e.g. TBL. */
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AARCH64_OPND_LVt, /* AdvSIMD Vector register list used in ld/st. */
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AARCH64_OPND_LVt_AL, /* AdvSIMD Vector register list for loading single
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structure to all lanes. */
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AARCH64_OPND_LEt, /* AdvSIMD Vector Element list. */
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AARCH64_OPND_Cn, /* Co-processor register in CRn field. */
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AARCH64_OPND_Cm, /* Co-processor register in CRm field. */
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AARCH64_OPND_IDX, /* AdvSIMD EXT index operand. */
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AARCH64_OPND_IMM_VLSL,/* Immediate for shifting vector registers left. */
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AARCH64_OPND_IMM_VLSR,/* Immediate for shifting vector registers right. */
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AARCH64_OPND_SIMD_IMM,/* AdvSIMD modified immediate without shift. */
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AARCH64_OPND_SIMD_IMM_SFT, /* AdvSIMD modified immediate with shift. */
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AARCH64_OPND_SIMD_FPIMM,/* AdvSIMD 8-bit fp immediate. */
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AARCH64_OPND_SHLL_IMM,/* Immediate shift for AdvSIMD SHLL instruction
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(no encoding). */
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AARCH64_OPND_IMM0, /* Immediate for #0. */
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AARCH64_OPND_FPIMM0, /* Immediate for #0.0. */
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AARCH64_OPND_FPIMM, /* Floating-point Immediate. */
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AARCH64_OPND_IMMR, /* Immediate #<immr> in e.g. BFM. */
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AARCH64_OPND_IMMS, /* Immediate #<imms> in e.g. BFM. */
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AARCH64_OPND_WIDTH, /* Immediate #<width> in e.g. BFI. */
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AARCH64_OPND_IMM, /* Immediate. */
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AARCH64_OPND_UIMM3_OP1,/* Unsigned 3-bit immediate in the op1 field. */
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AARCH64_OPND_UIMM3_OP2,/* Unsigned 3-bit immediate in the op2 field. */
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AARCH64_OPND_UIMM4, /* Unsigned 4-bit immediate in the CRm field. */
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AARCH64_OPND_UIMM7, /* Unsigned 7-bit immediate in the CRm:op2 fields. */
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AARCH64_OPND_BIT_NUM, /* Immediate. */
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AARCH64_OPND_EXCEPTION,/* imm16 operand in exception instructions. */
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AARCH64_OPND_CCMP_IMM,/* Immediate in conditional compare instructions. */
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AARCH64_OPND_NZCV, /* Flag bit specifier giving an alternative value for
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each condition flag. */
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AARCH64_OPND_LIMM, /* Logical Immediate. */
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AARCH64_OPND_AIMM, /* Arithmetic immediate. */
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AARCH64_OPND_HALF, /* #<imm16>{, LSL #<shift>} operand in move wide. */
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AARCH64_OPND_FBITS, /* FP #<fbits> operand in e.g. SCVTF */
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AARCH64_OPND_IMM_MOV, /* Immediate operand for the MOV alias. */
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AARCH64_OPND_COND, /* Standard condition as the last operand. */
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AARCH64_OPND_ADDR_ADRP, /* Memory address for ADRP */
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AARCH64_OPND_ADDR_PCREL14, /* 14-bit PC-relative address for e.g. TBZ. */
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AARCH64_OPND_ADDR_PCREL19, /* 19-bit PC-relative address for e.g. LDR. */
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AARCH64_OPND_ADDR_PCREL21, /* 21-bit PC-relative address for e.g. ADR. */
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AARCH64_OPND_ADDR_PCREL26, /* 26-bit PC-relative address for e.g. BL. */
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AARCH64_OPND_ADDR_SIMPLE, /* Address of ld/st exclusive. */
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AARCH64_OPND_ADDR_REGOFF, /* Address of register offset. */
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AARCH64_OPND_ADDR_SIMM7, /* Address of signed 7-bit immediate. */
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AARCH64_OPND_ADDR_SIMM9, /* Address of signed 9-bit immediate. */
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AARCH64_OPND_ADDR_SIMM9_2, /* Same as the above, but the immediate is
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negative or unaligned and there is
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no writeback allowed. This operand code
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is only used to support the programmer-
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friendly feature of using LDR/STR as the
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the mnemonic name for LDUR/STUR instructions
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wherever there is no ambiguity. */
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AARCH64_OPND_ADDR_UIMM12, /* Address of unsigned 12-bit immediate. */
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AARCH64_OPND_SIMD_ADDR_SIMPLE,/* Address of ld/st multiple structures. */
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AARCH64_OPND_SIMD_ADDR_POST, /* Address of ld/st multiple post-indexed. */
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AARCH64_OPND_SYSREG, /* System register operand. */
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AARCH64_OPND_PSTATEFIELD, /* PSTATE field name operand. */
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AARCH64_OPND_SYSREG_AT, /* System register <at_op> operand. */
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AARCH64_OPND_SYSREG_DC, /* System register <dc_op> operand. */
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AARCH64_OPND_SYSREG_IC, /* System register <ic_op> operand. */
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AARCH64_OPND_SYSREG_TLBI, /* System register <tlbi_op> operand. */
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AARCH64_OPND_BARRIER, /* Barrier operand. */
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AARCH64_OPND_BARRIER_ISB, /* Barrier operand for ISB. */
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AARCH64_OPND_PRFOP, /* Prefetch operation. */
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};
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/* Qualifier constrains an operand. It either specifies a variant of an
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operand type or limits values available to an operand type.
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N.B. Order is important; keep aarch64_opnd_qualifiers synced. */
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enum aarch64_opnd_qualifier
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{
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/* Indicating no further qualification on an operand. */
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AARCH64_OPND_QLF_NIL,
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/* Qualifying an operand which is a general purpose (integer) register;
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indicating the operand data size or a specific register. */
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AARCH64_OPND_QLF_W, /* Wn, WZR or WSP. */
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AARCH64_OPND_QLF_X, /* Xn, XZR or XSP. */
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AARCH64_OPND_QLF_WSP, /* WSP. */
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AARCH64_OPND_QLF_SP, /* SP. */
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/* Qualifying an operand which is a floating-point register, a SIMD
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vector element or a SIMD vector element list; indicating operand data
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size or the size of each SIMD vector element in the case of a SIMD
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vector element list.
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These qualifiers are also used to qualify an address operand to
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indicate the size of data element a load/store instruction is
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accessing.
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They are also used for the immediate shift operand in e.g. SSHR. Such
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a use is only for the ease of operand encoding/decoding and qualifier
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sequence matching; such a use should not be applied widely; use the value
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constraint qualifiers for immediate operands wherever possible. */
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AARCH64_OPND_QLF_S_B,
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AARCH64_OPND_QLF_S_H,
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AARCH64_OPND_QLF_S_S,
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AARCH64_OPND_QLF_S_D,
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AARCH64_OPND_QLF_S_Q,
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/* Qualifying an operand which is a SIMD vector register or a SIMD vector
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register list; indicating register shape.
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They are also used for the immediate shift operand in e.g. SSHR. Such
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a use is only for the ease of operand encoding/decoding and qualifier
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sequence matching; such a use should not be applied widely; use the value
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constraint qualifiers for immediate operands wherever possible. */
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AARCH64_OPND_QLF_V_8B,
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AARCH64_OPND_QLF_V_16B,
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AARCH64_OPND_QLF_V_4H,
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AARCH64_OPND_QLF_V_8H,
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AARCH64_OPND_QLF_V_2S,
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AARCH64_OPND_QLF_V_4S,
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AARCH64_OPND_QLF_V_1D,
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AARCH64_OPND_QLF_V_2D,
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AARCH64_OPND_QLF_V_1Q,
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/* Constraint on value. */
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AARCH64_OPND_QLF_imm_0_7,
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AARCH64_OPND_QLF_imm_0_15,
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AARCH64_OPND_QLF_imm_0_31,
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AARCH64_OPND_QLF_imm_0_63,
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AARCH64_OPND_QLF_imm_1_32,
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AARCH64_OPND_QLF_imm_1_64,
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/* Indicate whether an AdvSIMD modified immediate operand is shift-zeros
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or shift-ones. */
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AARCH64_OPND_QLF_LSL,
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AARCH64_OPND_QLF_MSL,
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/* Special qualifier helping retrieve qualifier information during the
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decoding time (currently not in use). */
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AARCH64_OPND_QLF_RETRIEVE,
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};
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/* Instruction class. */
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enum aarch64_insn_class
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{
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addsub_carry,
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addsub_ext,
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addsub_imm,
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addsub_shift,
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asimdall,
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asimddiff,
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asimdelem,
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asimdext,
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asimdimm,
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asimdins,
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asimdmisc,
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asimdperm,
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asimdsame,
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asimdshf,
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asimdtbl,
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asisddiff,
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asisdelem,
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asisdlse,
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asisdlsep,
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asisdlso,
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asisdlsop,
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asisdmisc,
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asisdone,
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asisdpair,
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asisdsame,
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asisdshf,
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bitfield,
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branch_imm,
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branch_reg,
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compbranch,
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condbranch,
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condcmp_imm,
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condcmp_reg,
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condsel,
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cryptoaes,
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cryptosha2,
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cryptosha3,
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dp_1src,
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dp_2src,
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dp_3src,
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exception,
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extract,
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float2fix,
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float2int,
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floatccmp,
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floatcmp,
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floatdp1,
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floatdp2,
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floatdp3,
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floatimm,
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floatsel,
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ldst_immpost,
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ldst_immpre,
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ldst_imm9, /* immpost or immpre */
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ldst_pos,
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ldst_regoff,
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ldst_unpriv,
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ldst_unscaled,
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ldstexcl,
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ldstnapair_offs,
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ldstpair_off,
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ldstpair_indexed,
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loadlit,
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log_imm,
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log_shift,
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movewide,
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pcreladdr,
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ic_system,
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testbranch,
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};
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/* Opcode enumerators. */
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enum aarch64_op
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{
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OP_NIL,
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OP_STRB_POS,
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OP_LDRB_POS,
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OP_LDRSB_POS,
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OP_STRH_POS,
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OP_LDRH_POS,
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OP_LDRSH_POS,
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OP_STR_POS,
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OP_LDR_POS,
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OP_STRF_POS,
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OP_LDRF_POS,
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OP_LDRSW_POS,
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OP_PRFM_POS,
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OP_STURB,
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OP_LDURB,
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OP_LDURSB,
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OP_STURH,
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OP_LDURH,
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OP_LDURSH,
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OP_STUR,
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OP_LDUR,
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OP_STURV,
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OP_LDURV,
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OP_LDURSW,
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OP_PRFUM,
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OP_LDR_LIT,
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OP_LDRV_LIT,
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OP_LDRSW_LIT,
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OP_PRFM_LIT,
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OP_ADD,
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OP_B,
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OP_BL,
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OP_MOVN,
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OP_MOVZ,
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OP_MOVK,
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OP_MOV_IMM_LOG, /* MOV alias for moving bitmask immediate. */
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OP_MOV_IMM_WIDE, /* MOV alias for moving wide immediate. */
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OP_MOV_IMM_WIDEN, /* MOV alias for moving wide immediate (negated). */
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OP_MOV_V, /* MOV alias for moving vector register. */
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||
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OP_ASR_IMM,
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OP_LSR_IMM,
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OP_LSL_IMM,
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OP_BIC,
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OP_UBFX,
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OP_BFXIL,
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OP_SBFX,
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OP_SBFIZ,
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OP_BFI,
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OP_UBFIZ,
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OP_UXTB,
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OP_UXTH,
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OP_UXTW,
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OP_CINC,
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OP_CINV,
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OP_CNEG,
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OP_CSET,
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OP_CSETM,
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OP_FCVT,
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OP_FCVTN,
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OP_FCVTN2,
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OP_FCVTL,
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OP_FCVTL2,
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OP_FCVTXN_S, /* Scalar version. */
|
||
|
||
OP_ROR_IMM,
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||
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||
OP_SXTL,
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OP_SXTL2,
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OP_UXTL,
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OP_UXTL2,
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||
|
||
OP_TOTAL_NUM, /* Pseudo. */
|
||
};
|
||
|
||
/* Maximum number of operands an instruction can have. */
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||
#define AARCH64_MAX_OPND_NUM 6
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||
/* Maximum number of qualifier sequences an instruction can have. */
|
||
#define AARCH64_MAX_QLF_SEQ_NUM 10
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||
/* Operand qualifier typedef; optimized for the size. */
|
||
typedef unsigned char aarch64_opnd_qualifier_t;
|
||
/* Operand qualifier sequence typedef. */
|
||
typedef aarch64_opnd_qualifier_t \
|
||
aarch64_opnd_qualifier_seq_t [AARCH64_MAX_OPND_NUM];
|
||
|
||
/* FIXME: improve the efficiency. */
|
||
static inline bfd_boolean
|
||
empty_qualifier_sequence_p (const aarch64_opnd_qualifier_t *qualifiers)
|
||
{
|
||
int i;
|
||
for (i = 0; i < AARCH64_MAX_OPND_NUM; ++i)
|
||
if (qualifiers[i] != AARCH64_OPND_QLF_NIL)
|
||
return FALSE;
|
||
return TRUE;
|
||
}
|
||
|
||
/* This structure holds information for a particular opcode. */
|
||
|
||
struct aarch64_opcode
|
||
{
|
||
/* The name of the mnemonic. */
|
||
const char *name;
|
||
|
||
/* The opcode itself. Those bits which will be filled in with
|
||
operands are zeroes. */
|
||
aarch64_insn opcode;
|
||
|
||
/* The opcode mask. This is used by the disassembler. This is a
|
||
mask containing ones indicating those bits which must match the
|
||
opcode field, and zeroes indicating those bits which need not
|
||
match (and are presumably filled in by operands). */
|
||
aarch64_insn mask;
|
||
|
||
/* Instruction class. */
|
||
enum aarch64_insn_class iclass;
|
||
|
||
/* Enumerator identifier. */
|
||
enum aarch64_op op;
|
||
|
||
/* Which architecture variant provides this instruction. */
|
||
const aarch64_feature_set *avariant;
|
||
|
||
/* An array of operand codes. Each code is an index into the
|
||
operand table. They appear in the order which the operands must
|
||
appear in assembly code, and are terminated by a zero. */
|
||
enum aarch64_opnd operands[AARCH64_MAX_OPND_NUM];
|
||
|
||
/* A list of operand qualifier code sequence. Each operand qualifier
|
||
code qualifies the corresponding operand code. Each operand
|
||
qualifier sequence specifies a valid opcode variant and related
|
||
constraint on operands. */
|
||
aarch64_opnd_qualifier_seq_t qualifiers_list[AARCH64_MAX_QLF_SEQ_NUM];
|
||
|
||
/* Flags providing information about this instruction */
|
||
uint32_t flags;
|
||
};
|
||
|
||
typedef struct aarch64_opcode aarch64_opcode;
|
||
|
||
/* Table describing all the AArch64 opcodes. */
|
||
extern aarch64_opcode aarch64_opcode_table[];
|
||
|
||
/* Opcode flags. */
|
||
#define F_ALIAS (1 << 0)
|
||
#define F_HAS_ALIAS (1 << 1)
|
||
/* Disassembly preference priority 1-3 (the larger the higher). If nothing
|
||
is specified, it is the priority 0 by default, i.e. the lowest priority. */
|
||
#define F_P1 (1 << 2)
|
||
#define F_P2 (2 << 2)
|
||
#define F_P3 (3 << 2)
|
||
/* Flag an instruction that is truly conditional executed, e.g. b.cond. */
|
||
#define F_COND (1 << 4)
|
||
/* Instruction has the field of 'sf'. */
|
||
#define F_SF (1 << 5)
|
||
/* Instruction has the field of 'size:Q'. */
|
||
#define F_SIZEQ (1 << 6)
|
||
/* Floating-point instruction has the field of 'type'. */
|
||
#define F_FPTYPE (1 << 7)
|
||
/* AdvSIMD scalar instruction has the field of 'size'. */
|
||
#define F_SSIZE (1 << 8)
|
||
/* AdvSIMD vector register arrangement specifier encoded in "imm5<3:0>:Q". */
|
||
#define F_T (1 << 9)
|
||
/* Size of GPR operand in AdvSIMD instructions encoded in Q. */
|
||
#define F_GPRSIZE_IN_Q (1 << 10)
|
||
/* Size of Rt load signed instruction encoded in opc[0], i.e. bit 22. */
|
||
#define F_LDS_SIZE (1 << 11)
|
||
/* Optional operand; assume maximum of 1 operand can be optional. */
|
||
#define F_OPD0_OPT (1 << 12)
|
||
#define F_OPD1_OPT (2 << 12)
|
||
#define F_OPD2_OPT (3 << 12)
|
||
#define F_OPD3_OPT (4 << 12)
|
||
#define F_OPD4_OPT (5 << 12)
|
||
/* Default value for the optional operand when omitted from the assembly. */
|
||
#define F_DEFAULT(X) (((X) & 0x1f) << 15)
|
||
/* Instruction that is an alias of another instruction needs to be
|
||
encoded/decoded by converting it to/from the real form, followed by
|
||
the encoding/decoding according to the rules of the real opcode.
|
||
This compares to the direct coding using the alias's information.
|
||
N.B. this flag requires F_ALIAS to be used together. */
|
||
#define F_CONV (1 << 20)
|
||
/* Use together with F_ALIAS to indicate an alias opcode is a programmer
|
||
friendly pseudo instruction available only in the assembly code (thus will
|
||
not show up in the disassembly). */
|
||
#define F_PSEUDO (1 << 21)
|
||
/* Instruction has miscellaneous encoding/decoding rules. */
|
||
#define F_MISC (1 << 22)
|
||
/* Instruction has the field of 'N'; used in conjunction with F_SF. */
|
||
#define F_N (1 << 23)
|
||
/* Opcode dependent field. */
|
||
#define F_OD(X) (((X) & 0x7) << 24)
|
||
/* Next bit is 27. */
|
||
|
||
static inline bfd_boolean
|
||
alias_opcode_p (const aarch64_opcode *opcode)
|
||
{
|
||
return (opcode->flags & F_ALIAS) ? TRUE : FALSE;
|
||
}
|
||
|
||
static inline bfd_boolean
|
||
opcode_has_alias (const aarch64_opcode *opcode)
|
||
{
|
||
return (opcode->flags & F_HAS_ALIAS) ? TRUE : FALSE;
|
||
}
|
||
|
||
/* Priority for disassembling preference. */
|
||
static inline int
|
||
opcode_priority (const aarch64_opcode *opcode)
|
||
{
|
||
return (opcode->flags >> 2) & 0x3;
|
||
}
|
||
|
||
static inline bfd_boolean
|
||
pseudo_opcode_p (const aarch64_opcode *opcode)
|
||
{
|
||
return (opcode->flags & F_PSEUDO) != 0lu ? TRUE : FALSE;
|
||
}
|
||
|
||
static inline bfd_boolean
|
||
optional_operand_p (const aarch64_opcode *opcode, unsigned int idx)
|
||
{
|
||
return (((opcode->flags >> 12) & 0x7) == idx + 1)
|
||
? TRUE : FALSE;
|
||
}
|
||
|
||
static inline aarch64_insn
|
||
get_optional_operand_default_value (const aarch64_opcode *opcode)
|
||
{
|
||
return (opcode->flags >> 15) & 0x1f;
|
||
}
|
||
|
||
static inline unsigned int
|
||
get_opcode_dependent_value (const aarch64_opcode *opcode)
|
||
{
|
||
return (opcode->flags >> 24) & 0x7;
|
||
}
|
||
|
||
static inline bfd_boolean
|
||
opcode_has_special_coder (const aarch64_opcode *opcode)
|
||
{
|
||
return (opcode->flags & (F_SF | F_SIZEQ | F_FPTYPE | F_SSIZE | F_T
|
||
| F_GPRSIZE_IN_Q | F_LDS_SIZE | F_MISC | F_N | F_COND)) ? TRUE
|
||
: FALSE;
|
||
}
|
||
|
||
struct aarch64_name_value_pair
|
||
{
|
||
const char * name;
|
||
aarch64_insn value;
|
||
};
|
||
|
||
extern const struct aarch64_name_value_pair aarch64_operand_modifiers [];
|
||
extern const struct aarch64_name_value_pair aarch64_sys_regs [];
|
||
extern const struct aarch64_name_value_pair aarch64_pstatefields [];
|
||
extern const struct aarch64_name_value_pair aarch64_barrier_options [16];
|
||
extern const struct aarch64_name_value_pair aarch64_prfops [32];
|
||
|
||
typedef struct
|
||
{
|
||
const char *template;
|
||
uint32_t value;
|
||
int has_xt;
|
||
} aarch64_sys_ins_reg;
|
||
|
||
extern const aarch64_sys_ins_reg aarch64_sys_regs_ic [];
|
||
extern const aarch64_sys_ins_reg aarch64_sys_regs_dc [];
|
||
extern const aarch64_sys_ins_reg aarch64_sys_regs_at [];
|
||
extern const aarch64_sys_ins_reg aarch64_sys_regs_tlbi [];
|
||
|
||
/* Shift/extending operator kinds.
|
||
N.B. order is important; keep aarch64_operand_modifiers synced. */
|
||
enum aarch64_modifier_kind
|
||
{
|
||
AARCH64_MOD_NONE,
|
||
AARCH64_MOD_MSL,
|
||
AARCH64_MOD_ROR,
|
||
AARCH64_MOD_ASR,
|
||
AARCH64_MOD_LSR,
|
||
AARCH64_MOD_LSL,
|
||
AARCH64_MOD_UXTB,
|
||
AARCH64_MOD_UXTH,
|
||
AARCH64_MOD_UXTW,
|
||
AARCH64_MOD_UXTX,
|
||
AARCH64_MOD_SXTB,
|
||
AARCH64_MOD_SXTH,
|
||
AARCH64_MOD_SXTW,
|
||
AARCH64_MOD_SXTX,
|
||
};
|
||
|
||
bfd_boolean
|
||
aarch64_extend_operator_p (enum aarch64_modifier_kind);
|
||
|
||
enum aarch64_modifier_kind
|
||
aarch64_get_operand_modifier (const struct aarch64_name_value_pair *);
|
||
/* Condition. */
|
||
|
||
typedef struct
|
||
{
|
||
/* A list of names with the first one as the disassembly preference;
|
||
terminated by NULL if fewer than 3. */
|
||
const char *names[3];
|
||
aarch64_insn value;
|
||
} aarch64_cond;
|
||
|
||
extern const aarch64_cond aarch64_conds[16];
|
||
|
||
const aarch64_cond* get_cond_from_value (aarch64_insn value);
|
||
const aarch64_cond* get_inverted_cond (const aarch64_cond *cond);
|
||
|
||
/* Structure representing an operand. */
|
||
|
||
struct aarch64_opnd_info
|
||
{
|
||
enum aarch64_opnd type;
|
||
aarch64_opnd_qualifier_t qualifier;
|
||
int idx;
|
||
|
||
union
|
||
{
|
||
struct
|
||
{
|
||
unsigned regno;
|
||
} reg;
|
||
struct
|
||
{
|
||
unsigned regno : 5;
|
||
unsigned index : 4;
|
||
} reglane;
|
||
/* e.g. LVn. */
|
||
struct
|
||
{
|
||
unsigned first_regno : 5;
|
||
unsigned num_regs : 3;
|
||
/* 1 if it is a list of reg element. */
|
||
unsigned has_index : 1;
|
||
/* Lane index; valid only when has_index is 1. */
|
||
unsigned index : 4;
|
||
} reglist;
|
||
/* e.g. immediate or pc relative address offset. */
|
||
struct
|
||
{
|
||
int64_t value;
|
||
unsigned is_fp : 1;
|
||
} imm;
|
||
/* e.g. address in STR (register offset). */
|
||
struct
|
||
{
|
||
unsigned base_regno;
|
||
struct
|
||
{
|
||
union
|
||
{
|
||
int imm;
|
||
unsigned regno;
|
||
};
|
||
unsigned is_reg;
|
||
} offset;
|
||
unsigned pcrel : 1; /* PC-relative. */
|
||
unsigned writeback : 1;
|
||
unsigned preind : 1; /* Pre-indexed. */
|
||
unsigned postind : 1; /* Post-indexed. */
|
||
} addr;
|
||
const aarch64_cond *cond;
|
||
/* The encoding of the system register. */
|
||
aarch64_insn sysreg;
|
||
/* The encoding of the PSTATE field. */
|
||
aarch64_insn pstatefield;
|
||
const aarch64_sys_ins_reg *sysins_op;
|
||
const struct aarch64_name_value_pair *barrier;
|
||
const struct aarch64_name_value_pair *prfop;
|
||
};
|
||
|
||
/* Operand shifter; in use when the operand is a register offset address,
|
||
add/sub extended reg, etc. e.g. <R><m>{, <extend> {#<amount>}}. */
|
||
struct
|
||
{
|
||
enum aarch64_modifier_kind kind;
|
||
int amount;
|
||
unsigned operator_present: 1; /* Only valid during encoding. */
|
||
/* Value of the 'S' field in ld/st reg offset; used only in decoding. */
|
||
unsigned amount_present: 1;
|
||
} shifter;
|
||
|
||
unsigned skip:1; /* Operand is not completed if there is a fixup needed
|
||
to be done on it. In some (but not all) of these
|
||
cases, we need to tell libopcodes to skip the
|
||
constraint checking and the encoding for this
|
||
operand, so that the libopcodes can pick up the
|
||
right opcode before the operand is fixed-up. This
|
||
flag should only be used during the
|
||
assembling/encoding. */
|
||
unsigned present:1; /* Whether this operand is present in the assembly
|
||
line; not used during the disassembly. */
|
||
};
|
||
|
||
typedef struct aarch64_opnd_info aarch64_opnd_info;
|
||
|
||
/* Structure representing an instruction.
|
||
|
||
It is used during both the assembling and disassembling. The assembler
|
||
fills an aarch64_inst after a successful parsing and then passes it to the
|
||
encoding routine to do the encoding. During the disassembling, the
|
||
disassembler calls the decoding routine to decode a binary instruction; on a
|
||
successful return, such a structure will be filled with information of the
|
||
instruction; then the disassembler uses the information to print out the
|
||
instruction. */
|
||
|
||
struct aarch64_inst
|
||
{
|
||
/* The value of the binary instruction. */
|
||
aarch64_insn value;
|
||
|
||
/* Corresponding opcode entry. */
|
||
const aarch64_opcode *opcode;
|
||
|
||
/* Condition for a truly conditional-executed instrutions, e.g. b.cond. */
|
||
const aarch64_cond *cond;
|
||
|
||
/* Operands information. */
|
||
aarch64_opnd_info operands[AARCH64_MAX_OPND_NUM];
|
||
};
|
||
|
||
typedef struct aarch64_inst aarch64_inst;
|
||
|
||
/* Diagnosis related declaration and interface. */
|
||
|
||
/* Operand error kind enumerators.
|
||
|
||
AARCH64_OPDE_RECOVERABLE
|
||
Less severe error found during the parsing, very possibly because that
|
||
GAS has picked up a wrong instruction template for the parsing.
|
||
|
||
AARCH64_OPDE_SYNTAX_ERROR
|
||
General syntax error; it can be either a user error, or simply because
|
||
that GAS is trying a wrong instruction template.
|
||
|
||
AARCH64_OPDE_FATAL_SYNTAX_ERROR
|
||
Definitely a user syntax error.
|
||
|
||
AARCH64_OPDE_INVALID_VARIANT
|
||
No syntax error, but the operands are not a valid combination, e.g.
|
||
FMOV D0,S0
|
||
|
||
AARCH64_OPDE_OUT_OF_RANGE
|
||
Error about some immediate value out of a valid range.
|
||
|
||
AARCH64_OPDE_UNALIGNED
|
||
Error about some immediate value not properly aligned (i.e. not being a
|
||
multiple times of a certain value).
|
||
|
||
AARCH64_OPDE_REG_LIST
|
||
Error about the register list operand having unexpected number of
|
||
registers.
|
||
|
||
AARCH64_OPDE_OTHER_ERROR
|
||
Error of the highest severity and used for any severe issue that does not
|
||
fall into any of the above categories.
|
||
|
||
The enumerators are only interesting to GAS. They are declared here (in
|
||
libopcodes) because that some errors are detected (and then notified to GAS)
|
||
by libopcodes (rather than by GAS solely).
|
||
|
||
The first three errors are only deteced by GAS while the
|
||
AARCH64_OPDE_INVALID_VARIANT error can only be spotted by libopcodes as
|
||
only libopcodes has the information about the valid variants of each
|
||
instruction.
|
||
|
||
The enumerators have an increasing severity. This is helpful when there are
|
||
multiple instruction templates available for a given mnemonic name (e.g.
|
||
FMOV); this mechanism will help choose the most suitable template from which
|
||
the generated diagnostics can most closely describe the issues, if any. */
|
||
|
||
enum aarch64_operand_error_kind
|
||
{
|
||
AARCH64_OPDE_NIL,
|
||
AARCH64_OPDE_RECOVERABLE,
|
||
AARCH64_OPDE_SYNTAX_ERROR,
|
||
AARCH64_OPDE_FATAL_SYNTAX_ERROR,
|
||
AARCH64_OPDE_INVALID_VARIANT,
|
||
AARCH64_OPDE_OUT_OF_RANGE,
|
||
AARCH64_OPDE_UNALIGNED,
|
||
AARCH64_OPDE_REG_LIST,
|
||
AARCH64_OPDE_OTHER_ERROR
|
||
};
|
||
|
||
/* N.B. GAS assumes that this structure work well with shallow copy. */
|
||
struct aarch64_operand_error
|
||
{
|
||
enum aarch64_operand_error_kind kind;
|
||
int index;
|
||
const char *error;
|
||
int data[3]; /* Some data for extra information. */
|
||
};
|
||
|
||
typedef struct aarch64_operand_error aarch64_operand_error;
|
||
|
||
/* Encoding entrypoint. */
|
||
|
||
extern int
|
||
aarch64_opcode_encode (const aarch64_opcode *, const aarch64_inst *,
|
||
aarch64_insn *, aarch64_opnd_qualifier_t *,
|
||
aarch64_operand_error *);
|
||
|
||
extern const aarch64_opcode *
|
||
aarch64_replace_opcode (struct aarch64_inst *,
|
||
const aarch64_opcode *);
|
||
|
||
/* Given the opcode enumerator OP, return the pointer to the corresponding
|
||
opcode entry. */
|
||
|
||
extern const aarch64_opcode *
|
||
aarch64_get_opcode (enum aarch64_op);
|
||
|
||
/* Generate the string representation of an operand. */
|
||
extern void
|
||
aarch64_print_operand (char *, size_t, bfd_vma, const aarch64_opcode *,
|
||
const aarch64_opnd_info *, int, int *, bfd_vma *);
|
||
|
||
/* Miscellaneous interface. */
|
||
|
||
extern int
|
||
aarch64_operand_index (const enum aarch64_opnd *, enum aarch64_opnd);
|
||
|
||
extern aarch64_opnd_qualifier_t
|
||
aarch64_get_expected_qualifier (const aarch64_opnd_qualifier_seq_t *, int,
|
||
const aarch64_opnd_qualifier_t, int);
|
||
|
||
extern int
|
||
aarch64_num_of_operands (const aarch64_opcode *);
|
||
|
||
extern int
|
||
aarch64_stack_pointer_p (const aarch64_opnd_info *);
|
||
|
||
extern
|
||
int aarch64_zero_register_p (const aarch64_opnd_info *);
|
||
|
||
/* Given an operand qualifier, return the expected data element size
|
||
of a qualified operand. */
|
||
extern unsigned char
|
||
aarch64_get_qualifier_esize (aarch64_opnd_qualifier_t);
|
||
|
||
extern enum aarch64_operand_class
|
||
aarch64_get_operand_class (enum aarch64_opnd);
|
||
|
||
extern const char *
|
||
aarch64_get_operand_name (enum aarch64_opnd);
|
||
|
||
extern const char *
|
||
aarch64_get_operand_desc (enum aarch64_opnd);
|
||
|
||
#ifdef DEBUG_AARCH64
|
||
extern int debug_dump;
|
||
|
||
extern void
|
||
aarch64_verbose (const char *, ...) __attribute__ ((format (printf, 1, 2)));
|
||
|
||
#define DEBUG_TRACE(M, ...) \
|
||
{ \
|
||
if (debug_dump) \
|
||
aarch64_verbose ("%s: " M ".", __func__, ##__VA_ARGS__); \
|
||
}
|
||
|
||
#define DEBUG_TRACE_IF(C, M, ...) \
|
||
{ \
|
||
if (debug_dump && (C)) \
|
||
aarch64_verbose ("%s: " M ".", __func__, ##__VA_ARGS__); \
|
||
}
|
||
#else /* !DEBUG_AARCH64 */
|
||
#define DEBUG_TRACE(M, ...) ;
|
||
#define DEBUG_TRACE_IF(C, M, ...) ;
|
||
#endif /* DEBUG_AARCH64 */
|
||
|
||
#endif /* OPCODE_AARCH64_H */
|