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llvm-project/llvm/utils/TableGen/X86DisassemblerTables.cpp
Jay Foad 4e8c9d2813
[TableGen] Use std::pair instead of std::make_pair. NFC. (#123174) 
Also use brace initialization and emplace to avoid explicitly 
constructing std::pair, and the same for std::tuple.
2025-01-16 13:20:41 +00:00

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//===- X86DisassemblerTables.cpp - Disassembler tables ----------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is part of the X86 Disassembler Emitter.
// It contains the implementation of the disassembler tables.
// Documentation for the disassembler emitter in general can be found in
// X86DisassemblerEmitter.h.
//
//===----------------------------------------------------------------------===//
#include "X86DisassemblerTables.h"
#include "X86DisassemblerShared.h"
#include "X86ModRMFilters.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
#include <map>
using namespace llvm;
using namespace X86Disassembler;
/// stringForContext - Returns a string containing the name of a particular
/// InstructionContext, usually for diagnostic purposes.
///
/// @param insnContext - The instruction class to transform to a string.
/// @return - A statically-allocated string constant that contains the
/// name of the instruction class.
static inline const char *stringForContext(InstructionContext insnContext) {
switch (insnContext) {
default:
llvm_unreachable("Unhandled instruction class");
#define ENUM_ENTRY(n, r, d) \
case n: \
return #n; \
break;
#define ENUM_ENTRY_K_B(n, r, d) \
ENUM_ENTRY(n, r, d) \
ENUM_ENTRY(n##_K_B, r, d) \
ENUM_ENTRY(n##_KZ, r, d) \
ENUM_ENTRY(n##_K, r, d) ENUM_ENTRY(n##_B, r, d) ENUM_ENTRY(n##_KZ_B, r, d)
INSTRUCTION_CONTEXTS
#undef ENUM_ENTRY
#undef ENUM_ENTRY_K_B
}
}
/// stringForOperandType - Like stringForContext, but for OperandTypes.
static inline const char *stringForOperandType(OperandType type) {
switch (type) {
default:
llvm_unreachable("Unhandled type");
#define ENUM_ENTRY(i, d) \
case i: \
return #i;
TYPES
#undef ENUM_ENTRY
}
}
/// stringForOperandEncoding - like stringForContext, but for
/// OperandEncodings.
static inline const char *stringForOperandEncoding(OperandEncoding encoding) {
switch (encoding) {
default:
llvm_unreachable("Unhandled encoding");
#define ENUM_ENTRY(i, d) \
case i: \
return #i;
ENCODINGS
#undef ENUM_ENTRY
}
}
/// inheritsFrom - Indicates whether all instructions in one class also belong
/// to another class.
///
/// @param child - The class that may be the subset
/// @param parent - The class that may be the superset
/// @return - True if child is a subset of parent, false otherwise.
static inline bool inheritsFrom(InstructionContext child,
InstructionContext parent, bool noPrefix = true,
bool VEX_LIG = false, bool WIG = false,
bool AdSize64 = false) {
if (child == parent)
return true;
switch (parent) {
case IC:
return (inheritsFrom(child, IC_64BIT, AdSize64) ||
(noPrefix && inheritsFrom(child, IC_OPSIZE, noPrefix)) ||
inheritsFrom(child, IC_ADSIZE) ||
(noPrefix && inheritsFrom(child, IC_XD, noPrefix)) ||
(noPrefix && inheritsFrom(child, IC_XS, noPrefix)));
case IC_64BIT:
return (inheritsFrom(child, IC_64BIT_REXW) ||
(noPrefix && inheritsFrom(child, IC_64BIT_OPSIZE, noPrefix)) ||
(!AdSize64 && inheritsFrom(child, IC_64BIT_ADSIZE)) ||
(noPrefix && inheritsFrom(child, IC_64BIT_XD, noPrefix)) ||
(noPrefix && inheritsFrom(child, IC_64BIT_XS, noPrefix)));
case IC_OPSIZE:
return inheritsFrom(child, IC_64BIT_OPSIZE) ||
inheritsFrom(child, IC_OPSIZE_ADSIZE);
case IC_ADSIZE:
return (noPrefix && inheritsFrom(child, IC_OPSIZE_ADSIZE, noPrefix));
case IC_OPSIZE_ADSIZE:
return false;
case IC_64BIT_ADSIZE:
return (noPrefix && inheritsFrom(child, IC_64BIT_OPSIZE_ADSIZE, noPrefix));
case IC_64BIT_OPSIZE_ADSIZE:
return false;
case IC_XD:
return inheritsFrom(child, IC_64BIT_XD);
case IC_XS:
return inheritsFrom(child, IC_64BIT_XS);
case IC_XD_OPSIZE:
return inheritsFrom(child, IC_64BIT_XD_OPSIZE);
case IC_XS_OPSIZE:
return inheritsFrom(child, IC_64BIT_XS_OPSIZE);
case IC_XD_ADSIZE:
return inheritsFrom(child, IC_64BIT_XD_ADSIZE);
case IC_XS_ADSIZE:
return inheritsFrom(child, IC_64BIT_XS_ADSIZE);
case IC_64BIT_REXW:
return ((noPrefix && inheritsFrom(child, IC_64BIT_REXW_XS, noPrefix)) ||
(noPrefix && inheritsFrom(child, IC_64BIT_REXW_XD, noPrefix)) ||
(noPrefix && inheritsFrom(child, IC_64BIT_REXW_OPSIZE, noPrefix)) ||
(!AdSize64 && inheritsFrom(child, IC_64BIT_REXW_ADSIZE)));
case IC_64BIT_OPSIZE:
return inheritsFrom(child, IC_64BIT_REXW_OPSIZE) ||
(!AdSize64 && inheritsFrom(child, IC_64BIT_OPSIZE_ADSIZE)) ||
(!AdSize64 && inheritsFrom(child, IC_64BIT_REXW_ADSIZE));
case IC_64BIT_XD:
return (inheritsFrom(child, IC_64BIT_REXW_XD) ||
(!AdSize64 && inheritsFrom(child, IC_64BIT_XD_ADSIZE)));
case IC_64BIT_XS:
return (inheritsFrom(child, IC_64BIT_REXW_XS) ||
(!AdSize64 && inheritsFrom(child, IC_64BIT_XS_ADSIZE)));
case IC_64BIT_XD_OPSIZE:
case IC_64BIT_XS_OPSIZE:
return false;
case IC_64BIT_XD_ADSIZE:
case IC_64BIT_XS_ADSIZE:
return false;
case IC_64BIT_REXW_XD:
case IC_64BIT_REXW_XS:
case IC_64BIT_REXW_OPSIZE:
case IC_64BIT_REXW_ADSIZE:
case IC_64BIT_REX2:
return false;
case IC_VEX:
return (VEX_LIG && WIG && inheritsFrom(child, IC_VEX_L_W)) ||
(WIG && inheritsFrom(child, IC_VEX_W)) ||
(VEX_LIG && inheritsFrom(child, IC_VEX_L));
case IC_VEX_XS:
return (VEX_LIG && WIG && inheritsFrom(child, IC_VEX_L_W_XS)) ||
(WIG && inheritsFrom(child, IC_VEX_W_XS)) ||
(VEX_LIG && inheritsFrom(child, IC_VEX_L_XS));
case IC_VEX_XD:
return (VEX_LIG && WIG && inheritsFrom(child, IC_VEX_L_W_XD)) ||
(WIG && inheritsFrom(child, IC_VEX_W_XD)) ||
(VEX_LIG && inheritsFrom(child, IC_VEX_L_XD));
case IC_VEX_OPSIZE:
return (VEX_LIG && WIG && inheritsFrom(child, IC_VEX_L_W_OPSIZE)) ||
(WIG && inheritsFrom(child, IC_VEX_W_OPSIZE)) ||
(VEX_LIG && inheritsFrom(child, IC_VEX_L_OPSIZE));
case IC_VEX_W:
return VEX_LIG && inheritsFrom(child, IC_VEX_L_W);
case IC_VEX_W_XS:
return VEX_LIG && inheritsFrom(child, IC_VEX_L_W_XS);
case IC_VEX_W_XD:
return VEX_LIG && inheritsFrom(child, IC_VEX_L_W_XD);
case IC_VEX_W_OPSIZE:
return VEX_LIG && inheritsFrom(child, IC_VEX_L_W_OPSIZE);
case IC_VEX_L:
return WIG && inheritsFrom(child, IC_VEX_L_W);
case IC_VEX_L_XS:
return WIG && inheritsFrom(child, IC_VEX_L_W_XS);
case IC_VEX_L_XD:
return WIG && inheritsFrom(child, IC_VEX_L_W_XD);
case IC_VEX_L_OPSIZE:
return WIG && inheritsFrom(child, IC_VEX_L_W_OPSIZE);
case IC_VEX_L_W:
case IC_VEX_L_W_XS:
case IC_VEX_L_W_XD:
case IC_VEX_L_W_OPSIZE:
return false;
case IC_EVEX:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W)) ||
(WIG && inheritsFrom(child, IC_EVEX_W)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2));
case IC_EVEX_XS:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XS)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XS)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XS)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS));
case IC_EVEX_XD:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XD)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XD)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XD)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD));
case IC_EVEX_OPSIZE:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE));
case IC_EVEX_OPSIZE_ADSIZE:
case IC_EVEX_XS_ADSIZE:
case IC_EVEX_XD_ADSIZE:
return false;
case IC_EVEX_K:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_K)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_K)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_K));
case IC_EVEX_XS_K:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XS_K)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XS_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_K));
case IC_EVEX_XD_K:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XD_K)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XD_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_K));
case IC_EVEX_OPSIZE_K:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_K));
case IC_EVEX_KZ:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_KZ)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_KZ)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_KZ));
case IC_EVEX_XS_KZ:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XS_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_KZ));
case IC_EVEX_XD_KZ:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XD_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_KZ));
case IC_EVEX_OPSIZE_KZ:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_KZ));
case IC_EVEX_W:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W)) ||
inheritsFrom(child, IC_EVEX_W_OPSIZE) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W));
case IC_EVEX_W_XS:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS));
case IC_EVEX_W_XD:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD));
case IC_EVEX_W_OPSIZE:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE));
case IC_EVEX_W_K:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_K));
case IC_EVEX_W_XS_K:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K));
case IC_EVEX_W_XD_K:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K));
case IC_EVEX_W_OPSIZE_K:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K));
case IC_EVEX_W_KZ:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_KZ));
case IC_EVEX_W_XS_KZ:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ));
case IC_EVEX_W_XD_KZ:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ));
case IC_EVEX_W_OPSIZE_KZ:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ));
case IC_EVEX_L:
return WIG && inheritsFrom(child, IC_EVEX_L_W);
case IC_EVEX_L_XS:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XS);
case IC_EVEX_L_XD:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XD);
case IC_EVEX_L_OPSIZE:
return WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE);
case IC_EVEX_L_K:
return WIG && inheritsFrom(child, IC_EVEX_L_W_K);
case IC_EVEX_L_XS_K:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XS_K);
case IC_EVEX_L_XD_K:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XD_K);
case IC_EVEX_L_OPSIZE_K:
return WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K);
case IC_EVEX_L_KZ:
return WIG && inheritsFrom(child, IC_EVEX_L_W_KZ);
case IC_EVEX_L_XS_KZ:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ);
case IC_EVEX_L_XD_KZ:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ);
case IC_EVEX_L_OPSIZE_KZ:
return WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ);
case IC_EVEX_L_W:
case IC_EVEX_L_W_XS:
case IC_EVEX_L_W_XD:
case IC_EVEX_L_W_OPSIZE:
return false;
case IC_EVEX_L_W_K:
case IC_EVEX_L_W_XS_K:
case IC_EVEX_L_W_XD_K:
case IC_EVEX_L_W_OPSIZE_K:
return false;
case IC_EVEX_L_W_KZ:
case IC_EVEX_L_W_XS_KZ:
case IC_EVEX_L_W_XD_KZ:
case IC_EVEX_L_W_OPSIZE_KZ:
return false;
case IC_EVEX_L2:
return WIG && inheritsFrom(child, IC_EVEX_L2_W);
case IC_EVEX_L2_XS:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XS);
case IC_EVEX_L2_XD:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XD);
case IC_EVEX_L2_OPSIZE:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE);
case IC_EVEX_L2_K:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_K);
case IC_EVEX_L2_XS_K:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K);
case IC_EVEX_L2_XD_K:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K);
case IC_EVEX_L2_OPSIZE_K:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K);
case IC_EVEX_L2_KZ:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_KZ);
case IC_EVEX_L2_XS_KZ:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ);
case IC_EVEX_L2_XD_KZ:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ);
case IC_EVEX_L2_OPSIZE_KZ:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ);
case IC_EVEX_L2_W:
case IC_EVEX_L2_W_XS:
case IC_EVEX_L2_W_XD:
case IC_EVEX_L2_W_OPSIZE:
return false;
case IC_EVEX_L2_W_K:
case IC_EVEX_L2_W_XS_K:
case IC_EVEX_L2_W_XD_K:
case IC_EVEX_L2_W_OPSIZE_K:
return false;
case IC_EVEX_L2_W_KZ:
case IC_EVEX_L2_W_XS_KZ:
case IC_EVEX_L2_W_XD_KZ:
case IC_EVEX_L2_W_OPSIZE_KZ:
return false;
case IC_EVEX_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_B));
case IC_EVEX_XS_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XS_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XS_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_B));
case IC_EVEX_XD_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XD_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XD_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_B));
case IC_EVEX_OPSIZE_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_B));
case IC_EVEX_K_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_K_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_K_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_K_B));
case IC_EVEX_XS_K_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XS_K_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XS_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_K_B));
case IC_EVEX_XD_K_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XD_K_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XD_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_K_B));
case IC_EVEX_OPSIZE_K_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_K_B));
case IC_EVEX_KZ_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_KZ_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_KZ_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_KZ_B));
case IC_EVEX_XS_KZ_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XS_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XS_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XS_KZ_B));
case IC_EVEX_XD_KZ_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_XD_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_XD_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_XD_KZ_B));
case IC_EVEX_OPSIZE_KZ_B:
return (VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ_B)) ||
(VEX_LIG && WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ_B)) ||
(WIG && inheritsFrom(child, IC_EVEX_W_OPSIZE_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L_OPSIZE_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_OPSIZE_KZ_B));
case IC_EVEX_W_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_B)) ||
inheritsFrom(child, IC_EVEX_W_OPSIZE_B) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_B));
case IC_EVEX_W_XS_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_B));
case IC_EVEX_W_XD_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_B));
case IC_EVEX_W_OPSIZE_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_B));
case IC_EVEX_W_K_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_K_B));
case IC_EVEX_W_XS_K_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K_B));
case IC_EVEX_W_XD_K_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K_B));
case IC_EVEX_W_OPSIZE_K_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K_B));
case IC_EVEX_W_KZ_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_KZ_B));
case IC_EVEX_W_XS_KZ_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ_B));
case IC_EVEX_W_XD_KZ_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ_B));
case IC_EVEX_W_OPSIZE_KZ_B:
return (VEX_LIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ_B)) ||
(VEX_LIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ_B));
case IC_EVEX_L_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_B);
case IC_EVEX_L_XS_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XS_B);
case IC_EVEX_L_XD_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XD_B);
case IC_EVEX_L_OPSIZE_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_B);
case IC_EVEX_L_K_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_K_B);
case IC_EVEX_L_XS_K_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XS_K_B);
case IC_EVEX_L_XD_K_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XD_K_B);
case IC_EVEX_L_OPSIZE_K_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_K_B);
case IC_EVEX_L_KZ_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_KZ_B);
case IC_EVEX_L_XS_KZ_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XS_KZ_B);
case IC_EVEX_L_XD_KZ_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_XD_KZ_B);
case IC_EVEX_L_OPSIZE_KZ_B:
return WIG && inheritsFrom(child, IC_EVEX_L_W_OPSIZE_KZ_B);
case IC_EVEX_L_W_B:
case IC_EVEX_L_W_XS_B:
case IC_EVEX_L_W_XD_B:
case IC_EVEX_L_W_OPSIZE_B:
return false;
case IC_EVEX_L_W_K_B:
case IC_EVEX_L_W_XS_K_B:
case IC_EVEX_L_W_XD_K_B:
case IC_EVEX_L_W_OPSIZE_K_B:
return false;
case IC_EVEX_L_W_KZ_B:
case IC_EVEX_L_W_XS_KZ_B:
case IC_EVEX_L_W_XD_KZ_B:
case IC_EVEX_L_W_OPSIZE_KZ_B:
return false;
case IC_EVEX_L2_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_B);
case IC_EVEX_L2_XS_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_B);
case IC_EVEX_L2_XD_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_B);
case IC_EVEX_L2_OPSIZE_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_B);
case IC_EVEX_L2_K_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_K_B);
case IC_EVEX_L2_XS_K_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_K_B);
case IC_EVEX_L2_XD_K_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_K_B);
case IC_EVEX_L2_OPSIZE_K_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_K_B);
case IC_EVEX_L2_KZ_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_KZ_B);
case IC_EVEX_L2_XS_KZ_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XS_KZ_B);
case IC_EVEX_L2_XD_KZ_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_XD_KZ_B);
case IC_EVEX_L2_OPSIZE_KZ_B:
return WIG && inheritsFrom(child, IC_EVEX_L2_W_OPSIZE_KZ_B);
case IC_EVEX_L2_W_B:
case IC_EVEX_L2_W_XS_B:
case IC_EVEX_L2_W_XD_B:
case IC_EVEX_L2_W_OPSIZE_B:
return false;
case IC_EVEX_L2_W_K_B:
case IC_EVEX_L2_W_XS_K_B:
case IC_EVEX_L2_W_XD_K_B:
case IC_EVEX_L2_W_OPSIZE_K_B:
return false;
case IC_EVEX_L2_W_KZ_B:
case IC_EVEX_L2_W_XS_KZ_B:
case IC_EVEX_L2_W_XD_KZ_B:
case IC_EVEX_L2_W_OPSIZE_KZ_B:
return false;
case IC_EVEX_NF:
return WIG && inheritsFrom(child, IC_EVEX_W_NF);
case IC_EVEX_B_NF:
return WIG && inheritsFrom(child, IC_EVEX_W_B_NF);
case IC_EVEX_OPSIZE_NF:
case IC_EVEX_OPSIZE_B_NF:
case IC_EVEX_W_NF:
case IC_EVEX_W_B_NF:
return false;
case IC_EVEX_B_U:
case IC_EVEX_XS_B_U:
case IC_EVEX_XD_B_U:
case IC_EVEX_OPSIZE_B_U:
case IC_EVEX_W_B_U:
case IC_EVEX_W_XS_B_U:
case IC_EVEX_W_XD_B_U:
case IC_EVEX_W_OPSIZE_B_U:
case IC_EVEX_K_B_U:
case IC_EVEX_XS_K_B_U:
case IC_EVEX_XD_K_B_U:
case IC_EVEX_OPSIZE_K_B_U:
case IC_EVEX_W_K_B_U:
case IC_EVEX_W_XS_K_B_U:
case IC_EVEX_W_XD_K_B_U:
case IC_EVEX_W_OPSIZE_K_B_U:
case IC_EVEX_KZ_B_U:
case IC_EVEX_XS_KZ_B_U:
case IC_EVEX_XD_KZ_B_U:
case IC_EVEX_OPSIZE_KZ_B_U:
case IC_EVEX_W_KZ_B_U:
case IC_EVEX_W_XS_KZ_B_U:
case IC_EVEX_W_XD_KZ_B_U:
case IC_EVEX_W_OPSIZE_KZ_B_U:
return false;
default:
errs() << "Unknown instruction class: "
<< stringForContext((InstructionContext)parent) << "\n";
llvm_unreachable("Unknown instruction class");
}
}
/// outranks - Indicates whether, if an instruction has two different applicable
/// classes, which class should be preferred when performing decode. This
/// imposes a total ordering (ties are resolved toward "lower")
///
/// @param upper - The class that may be preferable
/// @param lower - The class that may be less preferable
/// @return - True if upper is to be preferred, false otherwise.
static inline bool outranks(InstructionContext upper,
InstructionContext lower) {
assert(upper < IC_max);
assert(lower < IC_max);
#define ENUM_ENTRY(n, r, d) r,
#define ENUM_ENTRY_K_B(n, r, d) \
ENUM_ENTRY(n, r, d) \
ENUM_ENTRY(n##_K_B, r, d) \
ENUM_ENTRY(n##_KZ_B, r, d) \
ENUM_ENTRY(n##_KZ, r, d) ENUM_ENTRY(n##_K, r, d) ENUM_ENTRY(n##_B, r, d)
static int ranks[IC_max] = {INSTRUCTION_CONTEXTS};
#undef ENUM_ENTRY
#undef ENUM_ENTRY_K_B
return (ranks[upper] > ranks[lower]);
}
/// getDecisionType - Determines whether a ModRM decision with 255 entries can
/// be compacted by eliminating redundant information.
///
/// @param decision - The decision to be compacted.
/// @return - The compactest available representation for the decision.
static ModRMDecisionType getDecisionType(ModRMDecision &decision) {
bool satisfiesOneEntry = true;
bool satisfiesSplitRM = true;
bool satisfiesSplitReg = true;
bool satisfiesSplitMisc = true;
for (unsigned index = 0; index < 256; ++index) {
if (decision.instructionIDs[index] != decision.instructionIDs[0])
satisfiesOneEntry = false;
if (((index & 0xc0) == 0xc0) &&
(decision.instructionIDs[index] != decision.instructionIDs[0xc0]))
satisfiesSplitRM = false;
if (((index & 0xc0) != 0xc0) &&
(decision.instructionIDs[index] != decision.instructionIDs[0x00]))
satisfiesSplitRM = false;
if (((index & 0xc0) == 0xc0) && (decision.instructionIDs[index] !=
decision.instructionIDs[index & 0xf8]))
satisfiesSplitReg = false;
if (((index & 0xc0) != 0xc0) && (decision.instructionIDs[index] !=
decision.instructionIDs[index & 0x38]))
satisfiesSplitMisc = false;
}
if (satisfiesOneEntry)
return MODRM_ONEENTRY;
if (satisfiesSplitRM)
return MODRM_SPLITRM;
if (satisfiesSplitReg && satisfiesSplitMisc)
return MODRM_SPLITREG;
if (satisfiesSplitMisc)
return MODRM_SPLITMISC;
return MODRM_FULL;
}
/// stringForDecisionType - Returns a statically-allocated string corresponding
/// to a particular decision type.
///
/// @param dt - The decision type.
/// @return - A pointer to the statically-allocated string (e.g.,
/// "MODRM_ONEENTRY" for MODRM_ONEENTRY).
static const char *stringForDecisionType(ModRMDecisionType dt) {
#define ENUM_ENTRY(n) \
case n: \
return #n;
switch (dt) {
default:
llvm_unreachable("Unknown decision type");
MODRMTYPES
};
#undef ENUM_ENTRY
}
DisassemblerTables::DisassemblerTables() {
for (unsigned i = 0; i < std::size(Tables); i++)
Tables[i] = std::make_unique<ContextDecision>();
HasConflicts = false;
}
DisassemblerTables::~DisassemblerTables() {}
void DisassemblerTables::emitModRMDecision(raw_ostream &o1, raw_ostream &o2,
unsigned &i1, unsigned &i2,
unsigned &ModRMTableNum,
ModRMDecision &decision) const {
static uint64_t sEntryNumber = 1;
ModRMDecisionType dt = getDecisionType(decision);
if (dt == MODRM_ONEENTRY && decision.instructionIDs[0] == 0) {
// Empty table.
o2 << "{" << stringForDecisionType(dt) << ", 0}";
return;
}
std::vector<unsigned> ModRMDecision;
switch (dt) {
default:
llvm_unreachable("Unknown decision type");
case MODRM_ONEENTRY:
ModRMDecision.push_back(decision.instructionIDs[0]);
break;
case MODRM_SPLITRM:
ModRMDecision.push_back(decision.instructionIDs[0x00]);
ModRMDecision.push_back(decision.instructionIDs[0xc0]);
break;
case MODRM_SPLITREG:
for (unsigned index = 0; index < 64; index += 8)
ModRMDecision.push_back(decision.instructionIDs[index]);
for (unsigned index = 0xc0; index < 256; index += 8)
ModRMDecision.push_back(decision.instructionIDs[index]);
break;
case MODRM_SPLITMISC:
for (unsigned index = 0; index < 64; index += 8)
ModRMDecision.push_back(decision.instructionIDs[index]);
for (unsigned index = 0xc0; index < 256; ++index)
ModRMDecision.push_back(decision.instructionIDs[index]);
break;
case MODRM_FULL:
for (unsigned short InstructionID : decision.instructionIDs)
ModRMDecision.push_back(InstructionID);
break;
}
unsigned &EntryNumber = ModRMTable[ModRMDecision];
if (EntryNumber == 0) {
EntryNumber = ModRMTableNum;
ModRMTableNum += ModRMDecision.size();
o1 << "/*Table" << EntryNumber << "*/\n";
i1++;
for (unsigned I : ModRMDecision) {
o1.indent(i1 * 2) << format("0x%hx", I) << ", /*"
<< InstructionSpecifiers[I].name << "*/\n";
}
i1--;
}
o2 << "{" << stringForDecisionType(dt) << ", " << EntryNumber << "}";
switch (dt) {
default:
llvm_unreachable("Unknown decision type");
case MODRM_ONEENTRY:
sEntryNumber += 1;
break;
case MODRM_SPLITRM:
sEntryNumber += 2;
break;
case MODRM_SPLITREG:
sEntryNumber += 16;
break;
case MODRM_SPLITMISC:
sEntryNumber += 8 + 64;
break;
case MODRM_FULL:
sEntryNumber += 256;
break;
}
// We assume that the index can fit into uint32_t.
assert(sEntryNumber < -1U &&
"Index into ModRMDecision is too large for uint32_t!");
(void)sEntryNumber;
}
void DisassemblerTables::emitOpcodeDecision(raw_ostream &o1, raw_ostream &o2,
unsigned &i1, unsigned &i2,
unsigned &ModRMTableNum,
OpcodeDecision &opDecision) const {
o2 << "{";
++i2;
unsigned index;
for (index = 0; index < 256; ++index) {
auto &decision = opDecision.modRMDecisions[index];
ModRMDecisionType dt = getDecisionType(decision);
if (!(dt == MODRM_ONEENTRY && decision.instructionIDs[0] == 0))
break;
}
if (index == 256) {
// If all 256 entries are MODRM_ONEENTRY, omit output.
static_assert(MODRM_ONEENTRY == 0);
--i2;
o2 << "},\n";
} else {
o2 << " /* struct OpcodeDecision */ {\n";
for (index = 0; index < 256; ++index) {
o2.indent(i2);
o2 << "/*0x" << format("%02hhx", index) << "*/";
emitModRMDecision(o1, o2, i1, i2, ModRMTableNum,
opDecision.modRMDecisions[index]);
if (index < 255)
o2 << ",";
o2 << "\n";
}
o2.indent(i2) << "}\n";
--i2;
o2.indent(i2) << "},\n";
}
}
void DisassemblerTables::emitContextDecision(raw_ostream &o1, raw_ostream &o2,
unsigned &i1, unsigned &i2,
unsigned &ModRMTableNum,
ContextDecision &decision,
const char *name) const {
o2.indent(i2) << "static const struct ContextDecision " << name
<< " = {{/* opcodeDecisions */\n";
i2++;
for (unsigned index = 0; index < IC_max; ++index) {
o2.indent(i2) << "/*";
o2 << stringForContext((InstructionContext)index);
o2 << "*/ ";
emitOpcodeDecision(o1, o2, i1, i2, ModRMTableNum,
decision.opcodeDecisions[index]);
}
i2--;
o2.indent(i2) << "}};"
<< "\n";
}
void DisassemblerTables::emitInstructionInfo(raw_ostream &o,
unsigned &i) const {
unsigned NumInstructions = InstructionSpecifiers.size();
o << "static const struct OperandSpecifier x86OperandSets[]["
<< X86_MAX_OPERANDS << "] = {\n";
typedef SmallVector<std::pair<OperandEncoding, OperandType>, X86_MAX_OPERANDS>
OperandListTy;
std::map<OperandListTy, unsigned> OperandSets;
unsigned OperandSetNum = 0;
for (unsigned Index = 0; Index < NumInstructions; ++Index) {
OperandListTy OperandList;
for (auto Operand : InstructionSpecifiers[Index].operands) {
OperandEncoding Encoding = (OperandEncoding)Operand.encoding;
OperandType Type = (OperandType)Operand.type;
OperandList.emplace_back(Encoding, Type);
}
unsigned &N = OperandSets[OperandList];
if (N != 0)
continue;
N = ++OperandSetNum;
o << " { /* " << (OperandSetNum - 1) << " */\n";
for (unsigned i = 0, e = OperandList.size(); i != e; ++i) {
const char *Encoding = stringForOperandEncoding(OperandList[i].first);
const char *Type = stringForOperandType(OperandList[i].second);
o << " { " << Encoding << ", " << Type << " },\n";
}
o << " },\n";
}
o << "};"
<< "\n\n";
o.indent(i * 2) << "static const struct InstructionSpecifier ";
o << INSTRUCTIONS_STR "[" << InstructionSpecifiers.size() << "] = {\n";
i++;
for (unsigned index = 0; index < NumInstructions; ++index) {
o.indent(i * 2) << "{ /* " << index << " */\n";
i++;
OperandListTy OperandList;
for (auto Operand : InstructionSpecifiers[index].operands) {
OperandEncoding Encoding = (OperandEncoding)Operand.encoding;
OperandType Type = (OperandType)Operand.type;
OperandList.emplace_back(Encoding, Type);
}
o.indent(i * 2) << (OperandSets[OperandList] - 1) << ",\n";
o.indent(i * 2) << "/* " << InstructionSpecifiers[index].name << " */\n";
i--;
o.indent(i * 2) << "},\n";
}
i--;
o.indent(i * 2) << "};"
<< "\n";
}
void DisassemblerTables::emitContextTable(raw_ostream &o, unsigned &i) const {
o.indent(i * 2) << "static const uint8_t " CONTEXTS_STR "[" << ATTR_max
<< "] = {\n";
i++;
for (unsigned index = 0; index < ATTR_max; ++index) {
o.indent(i * 2);
if ((index & ATTR_EVEX) && (index & ATTR_ADSIZE) && (index & ATTR_OPSIZE))
o << "IC_EVEX_OPSIZE_ADSIZE";
else if ((index & ATTR_EVEX) && (index & ATTR_ADSIZE) && (index & ATTR_XD))
o << "IC_EVEX_XD_ADSIZE";
else if ((index & ATTR_EVEX) && (index & ATTR_ADSIZE) && (index & ATTR_XS))
o << "IC_EVEX_XS_ADSIZE";
else if (index & ATTR_EVEXNF) {
o << "IC_EVEX";
if (index & ATTR_REXW)
o << "_W";
else if (index & ATTR_OPSIZE)
o << "_OPSIZE";
if (index & ATTR_EVEXB)
o << "_B";
o << "_NF";
} else if ((index & ATTR_EVEX) || (index & ATTR_VEX) ||
(index & ATTR_VEXL)) {
if (index & ATTR_EVEX)
o << "IC_EVEX";
else
o << "IC_VEX";
if ((index & ATTR_EVEXB) && (index & ATTR_EVEXU))
; // Ignore ATTR_VEXL and ATTR_EVEXL2 under YMM rounding.
else if ((index & ATTR_EVEX) && (index & ATTR_EVEXL2))
o << "_L2";
else if (index & ATTR_VEXL)
o << "_L";
if (index & ATTR_REXW)
o << "_W";
if (index & ATTR_OPSIZE)
o << "_OPSIZE";
else if (index & ATTR_XD)
o << "_XD";
else if (index & ATTR_XS)
o << "_XS";
if (index & ATTR_EVEX) {
if (index & ATTR_EVEXKZ)
o << "_KZ";
else if (index & ATTR_EVEXK)
o << "_K";
if (index & ATTR_EVEXB)
o << "_B";
if ((index & ATTR_EVEXB) && (index & ATTR_EVEXU))
o << "_U";
}
} else if ((index & ATTR_64BIT) && (index & ATTR_REX2))
o << "IC_64BIT_REX2";
else if ((index & ATTR_64BIT) && (index & ATTR_REXW) && (index & ATTR_XS))
o << "IC_64BIT_REXW_XS";
else if ((index & ATTR_64BIT) && (index & ATTR_REXW) && (index & ATTR_XD))
o << "IC_64BIT_REXW_XD";
else if ((index & ATTR_64BIT) && (index & ATTR_REXW) &&
(index & ATTR_OPSIZE))
o << "IC_64BIT_REXW_OPSIZE";
else if ((index & ATTR_64BIT) && (index & ATTR_REXW) &&
(index & ATTR_ADSIZE))
o << "IC_64BIT_REXW_ADSIZE";
else if ((index & ATTR_64BIT) && (index & ATTR_XD) && (index & ATTR_OPSIZE))
o << "IC_64BIT_XD_OPSIZE";
else if ((index & ATTR_64BIT) && (index & ATTR_XD) && (index & ATTR_ADSIZE))
o << "IC_64BIT_XD_ADSIZE";
else if ((index & ATTR_64BIT) && (index & ATTR_XS) && (index & ATTR_OPSIZE))
o << "IC_64BIT_XS_OPSIZE";
else if ((index & ATTR_64BIT) && (index & ATTR_XS) && (index & ATTR_ADSIZE))
o << "IC_64BIT_XS_ADSIZE";
else if ((index & ATTR_64BIT) && (index & ATTR_XS))
o << "IC_64BIT_XS";
else if ((index & ATTR_64BIT) && (index & ATTR_XD))
o << "IC_64BIT_XD";
else if ((index & ATTR_64BIT) && (index & ATTR_OPSIZE) &&
(index & ATTR_ADSIZE))
o << "IC_64BIT_OPSIZE_ADSIZE";
else if ((index & ATTR_64BIT) && (index & ATTR_OPSIZE))
o << "IC_64BIT_OPSIZE";
else if ((index & ATTR_64BIT) && (index & ATTR_ADSIZE))
o << "IC_64BIT_ADSIZE";
else if ((index & ATTR_64BIT) && (index & ATTR_REXW))
o << "IC_64BIT_REXW";
else if ((index & ATTR_64BIT))
o << "IC_64BIT";
else if ((index & ATTR_XS) && (index & ATTR_OPSIZE))
o << "IC_XS_OPSIZE";
else if ((index & ATTR_XD) && (index & ATTR_OPSIZE))
o << "IC_XD_OPSIZE";
else if ((index & ATTR_XS) && (index & ATTR_ADSIZE))
o << "IC_XS_ADSIZE";
else if ((index & ATTR_XD) && (index & ATTR_ADSIZE))
o << "IC_XD_ADSIZE";
else if (index & ATTR_XS)
o << "IC_XS";
else if (index & ATTR_XD)
o << "IC_XD";
else if ((index & ATTR_OPSIZE) && (index & ATTR_ADSIZE))
o << "IC_OPSIZE_ADSIZE";
else if (index & ATTR_OPSIZE)
o << "IC_OPSIZE";
else if (index & ATTR_ADSIZE)
o << "IC_ADSIZE";
else
o << "IC";
o << ", // " << index << "\n";
}
i--;
o.indent(i * 2) << "};"
<< "\n";
}
void DisassemblerTables::emitContextDecisions(raw_ostream &o1, raw_ostream &o2,
unsigned &i1, unsigned &i2,
unsigned &ModRMTableNum) const {
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[0], ONEBYTE_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[1], TWOBYTE_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[2],
THREEBYTE38_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[3],
THREEBYTE3A_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[4], XOP8_MAP_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[5], XOP9_MAP_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[6], XOPA_MAP_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[7],
THREEDNOW_MAP_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[8], MAP4_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[9], MAP5_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[10], MAP6_STR);
emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[11], MAP7_STR);
}
void DisassemblerTables::emit(raw_ostream &o) const {
unsigned i1 = 0;
unsigned i2 = 0;
std::string s1;
std::string s2;
raw_string_ostream o1(s1);
raw_string_ostream o2(s2);
emitInstructionInfo(o, i2);
o << "\n";
emitContextTable(o, i2);
o << "\n";
unsigned ModRMTableNum = 0;
o << "static const InstrUID modRMTable[] = {\n";
i1++;
std::vector<unsigned> EmptyTable(1, 0);
ModRMTable[EmptyTable] = ModRMTableNum;
ModRMTableNum += EmptyTable.size();
o1 << "/*EmptyTable*/\n";
o1.indent(i1 * 2) << "0x0,\n";
i1--;
emitContextDecisions(o1, o2, i1, i2, ModRMTableNum);
o << s1;
o << " 0x0\n";
o << "};\n";
o << "\n";
o << s2;
o << "\n";
o << "\n";
}
void DisassemblerTables::setTableFields(ModRMDecision &decision,
const ModRMFilter &filter, InstrUID uid,
uint8_t opcode) {
for (unsigned index = 0; index < 256; ++index) {
if (filter.accepts(index)) {
if (decision.instructionIDs[index] == uid)
continue;
if (decision.instructionIDs[index] != 0) {
InstructionSpecifier &newInfo = InstructionSpecifiers[uid];
InstructionSpecifier &previousInfo =
InstructionSpecifiers[decision.instructionIDs[index]];
if (previousInfo.name == "NOOP" &&
(newInfo.name == "XCHG16ar" || newInfo.name == "XCHG32ar" ||
newInfo.name == "XCHG64ar"))
continue; // special case for XCHG*ar and NOOP
if (outranks(previousInfo.insnContext, newInfo.insnContext))
continue;
if (previousInfo.insnContext == newInfo.insnContext) {
errs() << "Error: Primary decode conflict: ";
errs() << newInfo.name << " would overwrite " << previousInfo.name;
errs() << "\n";
errs() << "ModRM " << index << "\n";
errs() << "Opcode " << (uint16_t)opcode << "\n";
errs() << "Context " << stringForContext(newInfo.insnContext) << "\n";
HasConflicts = true;
}
}
decision.instructionIDs[index] = uid;
}
}
}
void DisassemblerTables::setTableFields(
OpcodeType type, InstructionContext insnContext, uint8_t opcode,
const ModRMFilter &filter, InstrUID uid, bool is32bit, bool noPrefix,
bool ignoresVEX_L, bool ignoresW, unsigned addressSize) {
ContextDecision &decision = *Tables[type];
for (unsigned index = 0; index < IC_max; ++index) {
if ((is32bit || addressSize == 16) &&
inheritsFrom((InstructionContext)index, IC_64BIT))
continue;
bool adSize64 = addressSize == 64;
if (inheritsFrom((InstructionContext)index,
InstructionSpecifiers[uid].insnContext, noPrefix,
ignoresVEX_L, ignoresW, adSize64))
setTableFields(decision.opcodeDecisions[index].modRMDecisions[opcode],
filter, uid, opcode);
}
}
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