// license:BSD-3-Clause // copyright-holders:Bryan McPhail #pragma once #ifndef __ARM_H__ #define __ARM_H__ /**************************************************************************************************** * INTERRUPT CONSTANTS ***************************************************************************************************/ #define ARM_IRQ_LINE 0 #define ARM_FIRQ_LINE 1 /**************************************************************************************************** * PUBLIC FUNCTIONS ***************************************************************************************************/ enum { ARM_COPRO_TYPE_UNKNOWN_CP15 = 0, ARM_COPRO_TYPE_VL86C020 }; #define MCFG_ARM_COPRO(_type) \ arm_cpu_device::set_copro_type(*device, _type); enum { ARM32_PC=0, ARM32_R0, ARM32_R1, ARM32_R2, ARM32_R3, ARM32_R4, ARM32_R5, ARM32_R6, ARM32_R7, ARM32_R8, ARM32_R9, ARM32_R10, ARM32_R11, ARM32_R12, ARM32_R13, ARM32_R14, ARM32_R15, ARM32_FR8, ARM32_FR9, ARM32_FR10, ARM32_FR11, ARM32_FR12, ARM32_FR13, ARM32_FR14, ARM32_IR13, ARM32_IR14, ARM32_SR13, ARM32_SR14 }; class arm_cpu_device : public cpu_device { public: // construction/destruction arm_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); arm_cpu_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, uint32_t clock, const char *shortname, const char *source, endianness_t endianness); static void set_copro_type(device_t &device, int type) { downcast(device).m_copro_type = type; } protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // device_execute_interface overrides virtual uint32_t execute_min_cycles() const override { return 3; } virtual uint32_t execute_max_cycles() const override { return 4; } virtual uint32_t execute_input_lines() const override { return 2; } virtual void execute_run() override; virtual void execute_set_input(int inputnum, int state) override; // device_memory_interface overrides virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const override { return (spacenum == AS_PROGRAM) ? &m_program_config : nullptr; } // device_state_interface overrides virtual void state_string_export(const device_state_entry &entry, std::string &str) const override; // device_disasm_interface overrides virtual uint32_t disasm_min_opcode_bytes() const override { return 4; } virtual uint32_t disasm_max_opcode_bytes() const override { return 4; } virtual offs_t disasm_disassemble(std::ostream &stream, offs_t pc, const uint8_t *oprom, const uint8_t *opram, uint32_t options) override; address_space_config m_program_config; int m_icount; uint32_t m_sArmRegister[27]; uint32_t m_coproRegister[16]; uint8_t m_pendingIrq; uint8_t m_pendingFiq; address_space *m_program; direct_read_data *m_direct; endianness_t m_endian; uint8_t m_copro_type; void cpu_write32( int addr, uint32_t data ); void cpu_write8( int addr, uint8_t data ); uint32_t cpu_read32( int addr ); uint8_t cpu_read8( int addr ); uint32_t GetRegister( int rIndex ); void SetRegister( int rIndex, uint32_t value ); uint32_t GetModeRegister( int mode, int rIndex ); void SetModeRegister( int mode, int rIndex, uint32_t value ); void HandleALU(uint32_t insn); void HandleMul(uint32_t insn); void HandleBranch(uint32_t insn); void HandleMemSingle(uint32_t insn); void HandleMemBlock(uint32_t insn); void HandleCoPro(uint32_t insn); void HandleCoProVL86C020(uint32_t insn); uint32_t decodeShift(uint32_t insn, uint32_t *pCarry); void arm_check_irq_state(); int loadInc(uint32_t pat, uint32_t rbv, uint32_t s); int loadDec(uint32_t pat, uint32_t rbv, uint32_t s, uint32_t* deferredR15, int* defer); int storeInc(uint32_t pat, uint32_t rbv); int storeDec(uint32_t pat, uint32_t rbv); static uint32_t BCDToDecimal(uint32_t value); static uint32_t DecimalToBCD(uint32_t value); }; class arm_be_cpu_device : public arm_cpu_device { public: // construction/destruction arm_be_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual offs_t disasm_disassemble(std::ostream &stream, offs_t pc, const uint8_t *oprom, const uint8_t *opram, uint32_t options) override; }; extern const device_type ARM; extern const device_type ARM_BE; #endif /* __ARM_H__ */