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// license:BSD-3-Clause
// copyright-holders:Jason Eckhardt
/***************************************************************************
i860dis.c
Disassembler for the Intel i860 emulator.
Copyright (C) 1995-present Jason Eckhardt (jle@rice.edu)
***************************************************************************/
#ifndef MAME_CPU_I860_I860DIS_H
#define MAME_CPU_I860_I860DIS_H
#pragma once
class i860_disassembler : public util::disasm_interface
{
public:
i860_disassembler() = default;
virtual ~i860_disassembler() = default;
virtual u32 opcode_alignment() const override;
virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) override;
private:
/* Flags for the decode table. */
enum
{
DEC_MORE = 1, /* More decoding necessary. */
DEC_DECODED = 2 /* Fully decoded, go. */
};
struct decode_tbl_t
{
/* Disassembly function for this opcode.
Call with buffer, mnemonic, pc, insn. */
void (i860_disassembler::*insn_dis)(std::ostream &, char *, uint32_t, uint32_t);
/* Flags for this opcode. */
char flags;
/* Mnemonic of this opcode (sometimes partial when more decode is
done in disassembly routines-- e.g., loads and stores). */
const char *mnemonic;
};
static const char *const cr2str[];
static const decode_tbl_t decode_tbl[64];
static const decode_tbl_t core_esc_decode_tbl[8];
static const decode_tbl_t fp_decode_tbl[128];
int32_t sign_ext(uint32_t x, int n);
void int_12d(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_i2d(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_1d(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_cd(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_1c(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_1(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_0(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void flop_12d(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void flop_1d(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void flop_2d(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void flop_fxfr(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_12S(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_i2S(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_L(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_ldx(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_stx(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_fldst(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void int_flush(std::ostream &stream, char *mnemonic, uint32_t pc, uint32_t insn);
void i860_dasm_tab_replacer(std::ostream &stream, const std::string &buf, int tab_size);
};
#endif
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