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Diffstat (limited to 'src/devices/cpu/ns32000/ns32000dasm.h')
-rw-r--r-- | src/devices/cpu/ns32000/ns32000dasm.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/devices/cpu/ns32000/ns32000dasm.h b/src/devices/cpu/ns32000/ns32000dasm.h new file mode 100644 index 00000000000..4cbf4cf3bda --- /dev/null +++ b/src/devices/cpu/ns32000/ns32000dasm.h @@ -0,0 +1,117 @@ +// license:BSD-3-Clause +// copyright-holders:Nigel Barnes +/***************************************************************************** +* +* ns32000dasm.cpp +* +* NS32000 CPU Disassembly +* +*****************************************************************************/ + +#ifndef MAME_CPU_NS32000_NS32000DASM_H +#define MAME_CPU_NS32000_NS32000DASM_H + +#pragma once + +class ns32000_disassembler : public util::disasm_interface +{ +public: + + ns32000_disassembler() = default; + virtual ~ns32000_disassembler() = default; + + virtual u32 opcode_alignment() const override { return 1; } + virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) override; + +private: + /* implied operand attributes */ + enum + { + REG = 16, + QUICK, + SHORT, + IMM, + DISP, + GEN, + OPTIONS, + }; + /* access classes */ + enum + { + READ = 8, + WRITE, + RMW, + ADDR, + REGADDR + }; + /* length attributes */ + enum + { + B = 0, + W = 1, + D = 3, + I, + I2, + F, + L + }; + struct NS32000_OPCODE { + const char *mnemonic; + u32 operand1; + u32 operand; + u32 operand3; + u32 operand4; + offs_t dasm_flags; + }; + + static const NS32000_OPCODE format0_op[1]; + static const NS32000_OPCODE format1_op[16]; + static const NS32000_OPCODE format2_op[8]; + static const NS32000_OPCODE format3_op[16]; + static const NS32000_OPCODE format4_op[16]; + static const NS32000_OPCODE format5_op[16]; + static const NS32000_OPCODE format6_op[16]; + static const NS32000_OPCODE format7_op[16]; + static const NS32000_OPCODE format8_op[16]; + static const NS32000_OPCODE format9_op[16]; + static const NS32000_OPCODE format11_op[16]; + static const NS32000_OPCODE format14_op[16]; + + + static char const *const Format0[]; + static char const *const Format1[]; + static char const *const Format2[]; + static char const *const Format3[]; + static char const *const Format4[]; + static char const *const Format5[]; + static char const *const Format6[]; + static char const *const Format7[]; + static char const *const Format8[]; + static char const *const Format9[]; + static char const *const Format11[]; + static char const *const Format14[]; + static char const *const iType[]; + static char const *const fType[]; + static char const *const cType[]; + static char const *const indexSize[]; + static char const *const cond[]; + static char const *const areg[]; + static char const *const mreg[]; + static char const *const R[]; + static char const *const M[]; + static char const *const PR[]; + + std::string mnemonic_index(std::string form, std::string itype, std::string ftype); + uint8_t opcode_format(uint8_t byte); + int8_t short2int(uint8_t val); + static inline int32_t get_disp(offs_t &pc, const data_buffer &opcodes); + static inline std::string get_option_list(uint8_t cfg); + static inline std::string get_options(uint8_t opts); + static inline std::string get_reg_list(offs_t &pc, const data_buffer &opcodes, bool reverse); + + void stream_gen(std::ostream &stream, u8 gen_addr, u8 op_len, offs_t &pc, const data_buffer &opcodes); + + u32 m_base_pc; +}; + +#endif |