mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-26 23:29:22 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206722 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
//===- X86DisassemblerShared.h - Emitter shared header ----------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef X86DISASSEMBLERSHARED_H
|
|
#define X86DISASSEMBLERSHARED_H
|
|
|
|
#include <string.h>
|
|
#include <string>
|
|
|
|
#include "../../lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h"
|
|
|
|
struct InstructionSpecifier {
|
|
llvm::X86Disassembler::OperandSpecifier
|
|
operands[llvm::X86Disassembler::X86_MAX_OPERANDS];
|
|
llvm::X86Disassembler::InstructionContext insnContext;
|
|
std::string name;
|
|
|
|
InstructionSpecifier() {
|
|
insnContext = llvm::X86Disassembler::IC;
|
|
name = "";
|
|
memset(operands, 0, sizeof(operands));
|
|
}
|
|
};
|
|
|
|
/// Specifies whether a ModR/M byte is needed and (if so) which
|
|
/// instruction each possible value of the ModR/M byte corresponds to. Once
|
|
/// this information is known, we have narrowed down to a single instruction.
|
|
struct ModRMDecision {
|
|
uint8_t modrm_type;
|
|
llvm::X86Disassembler::InstrUID instructionIDs[256];
|
|
};
|
|
|
|
/// Specifies which set of ModR/M->instruction tables to look at
|
|
/// given a particular opcode.
|
|
struct OpcodeDecision {
|
|
ModRMDecision modRMDecisions[256];
|
|
};
|
|
|
|
/// Specifies which opcode->instruction tables to look at given
|
|
/// a particular context (set of attributes). Since there are many possible
|
|
/// contexts, the decoder first uses CONTEXTS_SYM to determine which context
|
|
/// applies given a specific set of attributes. Hence there are only IC_max
|
|
/// entries in this table, rather than 2^(ATTR_max).
|
|
struct ContextDecision {
|
|
OpcodeDecision opcodeDecisions[llvm::X86Disassembler::IC_max];
|
|
};
|
|
|
|
#endif
|