121 lines
4.8 KiB
C++
121 lines
4.8 KiB
C++
// Copyright 2014 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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/* $VER: ppc_disasm.h V1.6 (09.12.2011)
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*
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* Disassembler module for the PowerPC microprocessor family
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* Copyright (c) 1998-2001,2009,2011 Frank Wille
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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// Modified for use with Dolphin
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#pragma once
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#include <string>
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#include <string_view>
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#include "Common/CommonTypes.h"
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namespace Common
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{
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class GekkoDisassembler final
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{
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public:
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static std::string Disassemble(u32 opcode, u32 current_instruction_address,
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bool big_endian = true);
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static const char* GetGPRName(u32 index);
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static const char* GetFPRName(u32 index);
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private:
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GekkoDisassembler() = delete;
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static void ill(u32 in);
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static std::string imm(u32 in, int uimm, int type, bool hex);
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static std::string ra_rb(u32 in);
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static std::string rd_ra_rb(u32 in, int mask);
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static std::string fd_ra_rb(u32 in);
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static void trapi(u32 in, unsigned char dmode);
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static void cmpi(u32 in, int uimm);
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static void addi(u32 in, std::string_view ext);
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static size_t branch(u32 in, std::string_view bname, int aform, int bdisp);
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static void bc(u32 in);
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static void bli(u32 in);
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static void mcrf(u32 in, std::string_view suffix);
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static void crop(u32 in, std::string_view n1, std::string_view n2);
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static void nooper(u32 in, std::string_view name, unsigned char dmode);
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static void rlw(u32 in, std::string_view name, int i);
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static void ori(u32 in, std::string_view name);
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static void rld(u32 in, std::string_view name, int i);
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static void cmp(u32 in);
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static void trap(u32 in, unsigned char dmode);
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static void dab(u32 in, std::string_view name, int mask, int smode, int chkoe, int chkrc,
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unsigned char dmode);
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static void rrn(u32 in, std::string_view name, int smode, int chkoe, int chkrc,
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unsigned char dmode);
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static void mtcr(u32 in);
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static void msr(u32 in, int smode);
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static void mspr(u32 in, int smode);
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static void mtb(u32 in);
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static void sradi(u32 in);
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static void ldst(u32 in, std::string_view name, char reg, unsigned char dmode);
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static void fdabc(u32 in, std::string_view name, int mask, unsigned char dmode);
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static void fmr(u32 in);
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static void fdab(u32 in, std::string_view name);
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static void fcmp(u32 in, char c);
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static void mtfsb(u32 in, int n);
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static void ps(u32 inst);
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static void ps_mem(u32 inst);
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static u32* DoDisassembly(bool big_endian);
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enum InstructionType
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{
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PPCINSTR_OTHER = 0, // No additional info for other instr.
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PPCINSTR_BRANCH = 1, // Branch dest. = PC+displacement
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PPCINSTR_LDST = 2, // Load/store instruction: displ(sreg)
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PPCINSTR_IMM = 3, // 16-bit immediate val. in displacement
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};
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enum Flags
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{
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PPCF_ILLEGAL = (1 << 0), // Illegal PowerPC instruction
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PPCF_UNSIGNED = (1 << 1), // Unsigned immediate instruction
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PPCF_SUPER = (1 << 2), // Supervisor level instruction
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PPCF_64 = (1 << 3), // 64-bit only instruction
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};
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static u32* m_instr; // Pointer to instruction to disassemble
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static u32* m_iaddr; // Instruction.address., usually the same as instr
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static std::string m_opcode; // Buffer for opcode, min. 10 chars.
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static std::string m_operands; // Operand buffer, min. 24 chars.
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static unsigned char m_type; // Type of instruction, see below
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static unsigned char m_flags; // Additional flags
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static unsigned short m_sreg; // Register in load/store instructions
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static u32 m_displacement; // Branch- or load/store displacement
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};
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} // namespace Common
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