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-rw-r--r--src/devices/cpu/h8500/h8500dasm.h46
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diff --git a/src/devices/cpu/h8500/h8500dasm.h b/src/devices/cpu/h8500/h8500dasm.h
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+// license:BSD-3-Clause
+// copyright-holders:AJR
+
+#ifndef MAME_CPU_H8500_H8500DASM_H
+#define MAME_CPU_H8500_H8500DASM_H
+
+#pragma once
+
+class h8500_disassembler : public util::disasm_interface
+{
+public:
+ h8500_disassembler(bool expanded = true);
+
+protected:
+ // disasm_interface overrides
+ virtual offs_t opcode_alignment() const override;
+ virtual u32 interface_flags() const override;
+ virtual u32 page_address_bits() const override;
+ virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer &params) override;
+
+private:
+ // instruction mnemonic tables
+ static const char *const s_general_ops[0x20];
+ static const char *const s_bit_ops[4];
+ static const char *const s_unary_ops[0x10];
+ static const char *const s_branches[0x10];
+
+ // formatting helpers
+ void format_reg(std::ostream &stream, u8 n, bool w);
+ void format_creg(std::ostream &stream, u8 n, bool w);
+ void format_reglist(std::ostream &stream, u8 x);
+ void format_imm8(std::ostream &stream, u8 x);
+ void format_imm16(std::ostream &stream, u16 x);
+ void format_bdisp(std::ostream &stream, s16 disp, offs_t pc);
+ void format_ea(std::ostream &stream, u8 ea, u16 disp);
+
+ // disassembly helpers
+ offs_t dasm_illegal(std::ostream &stream, u8 op);
+ offs_t dasm_general(std::ostream &stream, offs_t pc, u8 ea, const data_buffer &opcodes);
+ offs_t dasm_misc(std::ostream &stream, offs_t pc, u8 ea, const data_buffer &opcodes);
+ offs_t dasm_immop(std::ostream &stream, offs_t pc, bool w, const data_buffer &opcodes);
+
+ const bool m_expanded;
+};
+
+#endif // MAME_CPU_H8500_H8500DASM_H