整理初版

third_party/asmjit/arm/a64instdb.h

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+// This file is part of AsmJit project <https://asmjit.com>
+//
+// See asmjit.h or LICENSE.md for license and copyright information
+// SPDX-License-Identifier: Zlib
+
+#ifndef ASMJIT_ARM_A64INSTDB_H_INCLUDED
+#define ASMJIT_ARM_A64INSTDB_H_INCLUDED
+
+#include "../arm/a64globals.h"
+
+ASMJIT_BEGIN_SUB_NAMESPACE(a64)
+
+//! \addtogroup asmjit_a64
+//! \{
+
+//! Instruction database (AArch64).
+namespace InstDB {
+
+//! Instruction flags.
+enum InstFlags : uint32_t {
+  //! The instruction provides conditional execution.
+  kInstFlagCond = 0x00000001u,
+  //! SIMD instruction that processes elements in pairs.
+  kInstFlagPair = 0x00000002u,
+  //! SIMD instruction that does widening (Long).
+  kInstFlagLong = 0x00000004u,
+  //! SIMD instruction that does narrowing (Narrow).
+  kInstFlagNarrow = 0x00000008u,
+  //! SIMD element access of half-words can only be used with v0..15.
+  kInstFlagVH0_15 = 0x00000010u,
+
+  //! Instruction may consecutive registers if the number of operands is greater than 2.
+  kInstFlagConsecutive = 0x00000080u
+};
+
+//! Instruction information (AArch64).
+struct InstInfo {
+  //! Instruction encoding type.
+  uint32_t _encoding : 8;
+  //! Index to data specific to each encoding type.
+  uint32_t _encodingDataIndex : 8;
+  uint32_t _reserved : 2;
+  //! Index to \ref _nameData.
+  uint32_t _nameDataIndex : 14;
+
+  uint16_t _rwInfoIndex;
+  uint16_t _flags;
+
+  //! \name Accessors
+  //! \{
+
+  inline uint32_t rwInfoIndex() const noexcept { return _rwInfoIndex; }
+  inline uint32_t flags() const noexcept { return _flags; }
+
+  inline bool hasFlag(uint32_t flag) const { return (_flags & flag) != 0; }
+
+  //! \}
+};
+
+ASMJIT_VARAPI const InstInfo _instInfoTable[];
+
+static inline const InstInfo& infoById(InstId instId) noexcept {
+  instId &= uint32_t(InstIdParts::kRealId);
+  ASMJIT_ASSERT(Inst::isDefinedId(instId));
+  return _instInfoTable[instId];
+}
+
+} // {InstDB}
+
+//! \}
+
+ASMJIT_END_SUB_NAMESPACE
+
+#endif // ASMJIT_ARM_A64INSTDB_H_INCLUDED