706 lines
20 KiB
C++
706 lines
20 KiB
C++
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#include <ida.hpp>
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#include <idp.hpp>
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#include <segregs.hpp>
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#include <diskio.hpp>
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#include "m65816.hpp"
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int data_id;
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#include "../../ldr/snes/addr.cpp"
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//--------------------------------------------------------------------------
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static const char *const RegNames[] =
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{
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"A", // Accumulator
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"X", // Index
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"Y", // Index
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"S", // Stack register (used?)
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"cs",
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"ds",
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"B", // Data bank
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"D", // Direct page register (used?)
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"m", // Holds accumulator-is-8-bits flag
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"x", // Holds indices-are-8-bits flag
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"e", // Holds emulation mode flag
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"PB" // Program bank
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};
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// ---------------------------------------------------------------------------
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ea_t m65816_t::xlat(ea_t address)
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{
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return sa->xlat(address);
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}
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// ---------------------------------------------------------------------------
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m65816_t::m65816_t()
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{
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cartridge = new SuperFamicomCartridge;
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sa = new snes_addr_t;
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}
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// ---------------------------------------------------------------------------
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m65816_t::~m65816_t()
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{
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delete cartridge;
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cartridge = nullptr;
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delete sa;
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sa = nullptr;
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}
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// ---------------------------------------------------------------------------
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// Handler for: get_autocmt.
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// Will possibly store a comment in 'buf',
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// depending on whether an autocmt is deemed necessary
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// for the current line.
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//
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// For the moment this will just print, in a user-friendly
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// way, information about the addressing mode, if needed.
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static bool make_insn_cmt(qstring *buf, const insn_t &insn)
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{
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uint8 opcode = get_byte(insn.ea);
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const struct opcode_info_t &opcode_info = get_opcode_info(opcode);
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static const bool addressing_info_required[] =
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{
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false, // ABS
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false, // ABS_IX,
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false, // ABS_IY,
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false, // ABS_IX_INDIR,
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false, // ABS_INDIR,
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false, // ABS_INDIR_LONG,
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false, // ABS_LONG,
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false, // ABS_LONG_IX,
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false, // ACC,
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true, // BLK_MOV,
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false, // DP,
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false, // DP_IX,
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false, // DP_IY,
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false, // DP_IX_INDIR,
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false, // DP_INDIR,
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false, // DP_INDIR_LONG,
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false, // DP_INDIR_IY,
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false, // DP_INDIR_LONG_IY,
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false, // IMM,
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false, // IMPLIED,
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true, // PC_REL,
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true, // PC_REL_LONG,
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false, // STACK_ABS,
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false, // STACK_DP_INDIR,
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false, // STACK_INT,
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false, // STACK_PC_REL,
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false, // STACK_PULL,
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false, // STACK_PUSH,
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false, // STACK_RTI,
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false, // STACK_RTL,
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false, // STACK_RTS,
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false, // STACK_REL,
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false // STACK_REL_INDIR_IY,
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};
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if ( !addressing_info_required[opcode_info.addr] )
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return false;
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const struct addrmode_info_t &addrmode_info = AddressingModes[opcode_info.addr];
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*buf = addrmode_info.name;
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return true;
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}
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//--------------------------------------------------------------------------
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ssize_t idaapi idb_listener_t::on_event(ssize_t code, va_list va)
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{
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switch ( code )
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{
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case idb_event::sgr_changed:
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{
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ea_t start_ea = va_arg(va, ea_t);
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ea_t dummy = va_arg(va, ea_t); qnotused(dummy);
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int regnum = va_arg(va, int);
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sel_t value = va_arg(va, sel_t);
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if ( regnum == rB )
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{
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// sel_t d2 = va_arg(va, sel_t); qnotused(d2);
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if ( value == BADSEL )
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split_sreg_range(start_ea, rDs, BADSEL, SR_auto);
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else
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split_sreg_range(start_ea, rDs, value << 12, SR_auto);
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}
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else if ( regnum == rPB )
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{
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uint16 offset = start_ea & 0xffff;
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ea_t newEA = pm.xlat((value << 16) + offset);
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if ( start_ea != newEA )
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warning("Inconsistent program bank number ($%02X:%04X != $%02X:%04X)",
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uint32(start_ea >> 16),
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offset,
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uint8(value),
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offset);
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}
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}
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break;
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}
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return 0;
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}
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//----------------------------------------------------------------------
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void m65816_t::load_from_idb()
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{
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cartridge->read_hash(helper);
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//cartridge.print();
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if ( !sa->addr_init(*cartridge) )
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warning("Unsupported mapper: %s", cartridge->mapper_string());
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ioh.restore_device(IORESP_NONE);
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}
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//----------------------------------------------------------------------
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// This old-style callback only returns the processor module object.
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static ssize_t idaapi notify(void *, int msgid, va_list)
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{
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if ( msgid == processor_t::ev_get_procmod )
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return size_t(SET_MODULE_DATA(m65816_t));
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return 0;
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}
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//----------------------------------------------------------------------
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ssize_t idaapi m65816_t::on_event(ssize_t msgid, va_list va)
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{
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int retcode = 1;
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switch ( msgid )
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{
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case processor_t::ev_init:
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hook_event_listener(HT_IDB, &idb_listener, &LPH);
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helper.create(PROCMOD_NODE_NAME);
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break;
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case processor_t::ev_term:
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unhook_event_listener(HT_IDB, &idb_listener);
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clr_module_data(data_id);
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break;
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case processor_t::ev_newprc:
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break;
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case processor_t::ev_creating_segm:
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{
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segment_t *sptr = va_arg(va, segment_t *);
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// default DS is equal to CS
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sptr->defsr[rDs - ph.reg_first_sreg] = sptr->sel;
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// detect SNES bank 0
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if ( xlat(0) == (sptr->start_ea & 0xff0000) )
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{
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// initial bank must be $00 (especially important on HiROM)
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// Example: Donkey Kong Country 2 - Emulation_mode_RESET
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sptr->defsr[rB - ph.reg_first_sreg] = 0;
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sptr->defsr[rPB - ph.reg_first_sreg] = 0;
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}
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else
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{
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// otherwise, set the default bank number from EA
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uint8 pb = sptr->start_ea >> 16;
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sptr->defsr[rB - ph.reg_first_sreg] = pb;
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sptr->defsr[rPB - ph.reg_first_sreg] = pb;
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}
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}
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break;
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case processor_t::ev_newfile:
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{
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cartridge->read_hash(helper);
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//cartridge.print();
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if ( !sa->addr_init(*cartridge) )
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warning("Unsupported mapper: %s", cartridge->mapper_string());
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const char *device_ptr = nullptr;
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if ( cartridge->has_superfx )
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device_ptr = "superfx";
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else if ( cartridge->has_sa1 )
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device_ptr = "sa1";
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else if ( cartridge->has_cx4 )
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device_ptr = "cx4";
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else if ( cartridge->has_spc7110 )
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device_ptr = "spc7110";
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else if ( cartridge->has_sdd1 )
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device_ptr = "sdd1";
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else if ( cartridge->has_sharprtc )
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device_ptr = "sharprtc";
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else if ( cartridge->has_epsonrtc )
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device_ptr = "epsonrtc";
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else if ( cartridge->has_obc1 )
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device_ptr = "obc1";
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else if ( cartridge->has_dsp1 )
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device_ptr = "dsp1";
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else if ( cartridge->has_dsp2 )
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device_ptr = "dsp2";
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else if ( cartridge->has_dsp3 )
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device_ptr = "dsp3";
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else if ( cartridge->has_dsp4 )
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device_ptr = "dsp4";
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else if ( cartridge->has_st010 )
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device_ptr = "st010";
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else if ( cartridge->has_st011 )
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device_ptr = "st011";
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else if ( cartridge->has_st018 )
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device_ptr = "st018";
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qstring loader_device;
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if ( device_ptr == nullptr )
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{
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ssize_t len = helper.hashstr(&loader_device, "device");
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if ( len <= 0 )
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device_ptr = "65816";
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else
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device_ptr = loader_device.c_str();
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}
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ioh.set_device_name(device_ptr, IORESP_ALL);
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set_default_sreg_value(NULL, rFm, 1);
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set_default_sreg_value(NULL, rFx, 1);
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set_default_sreg_value(NULL, rFe, 1);
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set_default_sreg_value(NULL, rD, 0);
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// see processor_t::ev_creating_segm for the following registers
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//set_default_sreg_value(NULL, rPB, 0);
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//set_default_sreg_value(NULL, rB, 0);
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//set_default_sreg_value(NULL, rDs, 0);
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if ( inf_get_start_ip() != BADADDR )
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{
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ea_t reset_ea = xlat(inf_get_start_ip());
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ea_t sea = getseg(reset_ea)->start_ea;
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split_sreg_range(reset_ea, rFm, get_sreg(sea, rFm), SR_auto);
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split_sreg_range(reset_ea, rFx, get_sreg(sea, rFx), SR_auto);
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split_sreg_range(reset_ea, rFe, get_sreg(sea, rFe), SR_auto);
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split_sreg_range(reset_ea, rPB, 0, SR_auto);
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split_sreg_range(reset_ea, rB, 0, SR_auto);
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split_sreg_range(reset_ea, rD, get_sreg(sea, rD), SR_auto);
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}
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}
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break;
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case processor_t::ev_ending_undo:
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case processor_t::ev_oldfile:
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{
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load_from_idb();
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if ( msgid == processor_t::ev_oldfile )
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{ // read rommode_t for backward compatibility
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nodeidx_t mode = helper.hashval_long("rommode_t");
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if ( mode != 0 )
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{
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switch ( mode )
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{
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case 0x20:
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cartridge->mapper = SuperFamicomCartridge::LoROM;
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break;
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case 0x21:
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cartridge->mapper = SuperFamicomCartridge::HiROM;
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break;
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}
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helper.hashdel("rommode_t");
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cartridge->write_hash(helper);
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}
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}
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}
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break;
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case processor_t::ev_get_autocmt:
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{
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qstring *buf = va_arg(va, qstring *);
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const insn_t *insn = va_arg(va, insn_t *);
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if ( make_insn_cmt(buf, *insn) )
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retcode = 1;
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}
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break;
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case processor_t::ev_may_be_func:
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{
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const insn_t *insn = va_arg(va, insn_t *);
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retcode = 0;
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ea_t cref_addr;
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for ( cref_addr = get_first_cref_to(insn->ea);
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cref_addr != BADADDR;
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cref_addr = get_next_cref_to(insn->ea, cref_addr) )
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{
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uint8 opcode = get_byte(cref_addr);
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const struct opcode_info_t &opinfo = get_opcode_info(opcode);
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if ( opinfo.itype == M65816_jsl
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|| opinfo.itype == M65816_jsr
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|| opinfo.itype == M65816_jml )
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{
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retcode = 100;
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break;
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}
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}
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}
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break;
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case processor_t::ev_is_call_insn:
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{
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const insn_t *insn = va_arg(va, insn_t *);
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const struct opcode_info_t &opinfo = get_opcode_info(get_byte(insn->ea));
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if ( opinfo.itype == M65816_jsr
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|| opinfo.itype == M65816_jsl )
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retcode = 1;
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else
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retcode = -1;
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}
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break;
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case processor_t::ev_is_ret_insn:
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{
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const insn_t *insn = va_arg(va, insn_t *);
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const struct opcode_info_t &opinfo = get_opcode_info(get_byte(insn->ea));
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if ( opinfo.itype == M65816_rti
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|| opinfo.itype == M65816_rtl
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|| opinfo.itype == M65816_rts )
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retcode = 1;
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else
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retcode = -1;
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}
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break;
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case processor_t::ev_is_indirect_jump:
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{
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const insn_t *insn = va_arg(va, insn_t *);
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const struct opcode_info_t &opinfo = get_opcode_info(get_byte(insn->ea));
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if ( opinfo.itype == M65816_jmp
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|| opinfo.itype == M65816_jml )
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{
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if ( opinfo.addr == ABS_INDIR
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|| opinfo.addr == ABS_IX_INDIR
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|| opinfo.addr == ABS_INDIR_LONG )
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retcode = 2;
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else
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retcode = 1;
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}
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else
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retcode = 0;
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}
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break;
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case processor_t::ev_out_header:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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m65816_header(*ctx);
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return 1;
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}
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case processor_t::ev_out_footer:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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m65816_footer(*ctx);
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return 1;
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}
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case processor_t::ev_out_segstart:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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segment_t *seg = va_arg(va, segment_t *);
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m65816_segstart(*ctx, seg);
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return 1;
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}
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case processor_t::ev_out_assumes:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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m65816_assumes(*ctx);
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return 1;
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}
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case processor_t::ev_ana_insn:
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{
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insn_t *out = va_arg(va, insn_t *);
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return ana(out);
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}
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case processor_t::ev_emu_insn:
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{
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const insn_t *insn = va_arg(va, const insn_t *);
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return emu(*insn) ? 1 : -1;
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}
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case processor_t::ev_out_insn:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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out_insn(*ctx);
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return 1;
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}
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case processor_t::ev_out_operand:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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const op_t *op = va_arg(va, const op_t *);
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return out_opnd(*ctx, *op) ? 1 : -1;
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}
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default:
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retcode = 0;
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break;
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}
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return retcode;
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}
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//-----------------------------------------------------------------------
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// CA65 ASSEMBLER
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//
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// http://www.cc65.org/doc/ca65-4.html#ss4.1
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//-----------------------------------------------------------------------
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static const asm_t ca65asm =
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{
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AS_COLON | ASH_HEXF4, // Assembler features
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0, // User-defined flags
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"CA65 ASSEMBLER", // Name
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0,
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NULL, // headers
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".ORG", // origin directive
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".END", // end directive
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";", // comment string
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'\'', // string delimiter
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'\'', // char delimiter
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"\\'", // special symbols in char and string constants
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".BYTE", // ascii string directive
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".BYTE", // byte directive
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".WORD", // word directive
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};
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//-----------------------------------------------------------------------
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// PseudoSam
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//-----------------------------------------------------------------------
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static const char *const ps_headers[] =
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{
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".code",
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NULL
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};
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static const asm_t pseudosam =
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{
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AS_COLON | ASH_HEXF1 | AS_N2CHR | AS_NOXRF,
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UAS_SELSG,
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"PseudoSam by PseudoCode",
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0,
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ps_headers,
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".org",
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".end",
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";", // comment string
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'"', // string delimiter
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'\'', // char delimiter
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"\\\"'", // special symbols in char and string constants
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".db", // ascii string directive
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".db", // byte directive
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".dw", // word directive
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NULL, // dword (4 bytes)
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NULL, // qword (8 bytes)
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NULL, // oword (16 bytes)
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NULL, // float (4 bytes)
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NULL, // double (8 bytes)
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NULL, // tbyte (10/12 bytes)
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NULL, // packed decimal real
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NULL, // arrays (#h,#d,#v,#s(...)
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".rs %s", // uninited arrays
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".equ", // equ
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NULL, // seg prefix
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NULL, // curip
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NULL, // func_header
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NULL, // func_footer
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NULL, // public
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NULL, // weak
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NULL, // extrn
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NULL, // comm
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NULL, // get_type_name
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NULL, // align
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'(', ')', // lbrace, rbrace
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NULL, // mod
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NULL, // and
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NULL, // or
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NULL, // xor
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NULL, // not
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NULL, // shl
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NULL, // shr
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NULL, // sizeof
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};
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//-----------------------------------------------------------------------
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// SVENSON ELECTRONICS 6502/65C02 ASSEMBLER - V.1.0 - MAY, 1988
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//-----------------------------------------------------------------------
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static const asm_t svasm =
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{
|
|
AS_COLON | ASH_HEXF4,
|
|
UAS_NOSEG,
|
|
"SVENSON ELECTRONICS 6502/65C02 ASSEMBLER - V.1.0 - MAY, 1988",
|
|
0,
|
|
NULL, // headers
|
|
"* = ",
|
|
".END",
|
|
|
|
";", // comment string
|
|
'\'', // string delimiter
|
|
'\'', // char delimiter
|
|
"\\'", // special symbols in char and string constants
|
|
|
|
".BYTE", // ascii string directive
|
|
".BYTE", // byte directive
|
|
".WORD", // word directive
|
|
};
|
|
|
|
//-----------------------------------------------------------------------
|
|
// TASM assembler definiton
|
|
//-----------------------------------------------------------------------
|
|
static const asm_t tasm =
|
|
{
|
|
AS_COLON | AS_N2CHR | AS_1TEXT,
|
|
UAS_NOENS | UAS_NOSEG,
|
|
"Table Driven Assembler (TASM) by Speech Technology Inc.",
|
|
0,
|
|
NULL, // headers,
|
|
".org",
|
|
".end",
|
|
|
|
";", // comment string
|
|
'"', // string delimiter
|
|
'\'', // char delimiter
|
|
"\\\"'", // special symbols in char and string constants
|
|
|
|
".text", // ascii string directive
|
|
".db", // byte directive
|
|
".dw", // word directive
|
|
NULL, // dword (4 bytes)
|
|
NULL, // qword (8 bytes)
|
|
NULL, // oword (16 bytes)
|
|
NULL, // float (4 bytes)
|
|
NULL, // double (8 bytes)
|
|
NULL, // tbyte (10/12 bytes)
|
|
NULL, // packed decimal real
|
|
NULL, // arrays (#h,#d,#v,#s(...)
|
|
".block %s", // uninited arrays
|
|
".equ",
|
|
NULL, // seg prefix
|
|
NULL, // curip
|
|
NULL, // func_header
|
|
NULL, // func_footer
|
|
NULL, // public
|
|
NULL, // weak
|
|
NULL, // extrn
|
|
NULL, // comm
|
|
NULL, // get_type_name
|
|
NULL, // align
|
|
'(', ')', // lbrace, rbrace
|
|
NULL, // mod
|
|
"and", // and
|
|
"or", // or
|
|
NULL, // xor
|
|
"not", // not
|
|
NULL, // shl
|
|
NULL, // shr
|
|
NULL, // sizeof
|
|
};
|
|
|
|
|
|
//-----------------------------------------------------------------------
|
|
// Avocet assembler definiton
|
|
//-----------------------------------------------------------------------
|
|
static const asm_t avocet =
|
|
{
|
|
AS_COLON | AS_N2CHR | AS_1TEXT,
|
|
UAS_NOENS | UAS_NOSEG,
|
|
"Avocet Systems 2500AD 6502 Assembler",
|
|
0,
|
|
NULL, // headers,
|
|
".org",
|
|
".end",
|
|
|
|
";", // comment string
|
|
'"', // string delimiter
|
|
'\'', // char delimiter
|
|
"\\\"'", // special symbols in char and string constants
|
|
|
|
".fcc", // ascii string directive
|
|
".db", // byte directive
|
|
".dw", // word directive
|
|
NULL, // dword (4 bytes)
|
|
NULL, // qword (8 bytes)
|
|
NULL, // oword (16 bytes)
|
|
NULL, // float (4 bytes)
|
|
NULL, // double (8 bytes)
|
|
NULL, // tbyte (10/12 bytes)
|
|
NULL, // packed decimal real
|
|
NULL, // arrays (#h,#d,#v,#s(...)
|
|
".ds %s", // uninited arrays
|
|
};
|
|
|
|
static const asm_t *const asms[] =
|
|
{
|
|
&ca65asm,
|
|
|
|
// 6502 asm_t; imported from the 6502 CPU module.
|
|
&svasm,
|
|
&tasm,
|
|
&pseudosam,
|
|
&avocet,
|
|
NULL
|
|
};
|
|
|
|
//-----------------------------------------------------------------------
|
|
#define FAMILY "MOS Technology 658xx series:"
|
|
static const char *const shnames[] = { "m65816", "m65c816", NULL };
|
|
static const char *const lnames[] = { FAMILY"MOS Technology 65816", "MOS Technology 65C816", NULL };
|
|
|
|
static const uchar retcode_1[] = { 0x60 }; // RTS
|
|
static const uchar retcode_2[] = { 0x40 }; // RTI
|
|
static const uchar retcode_3[] = { 0x6b }; // RTL
|
|
|
|
static const bytes_t retcodes[] =
|
|
{
|
|
{ sizeof(retcode_1), retcode_1 },
|
|
{ sizeof(retcode_2), retcode_2 },
|
|
{ sizeof(retcode_3), retcode_3 },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
//-----------------------------------------------------------------------
|
|
// Processor Definition
|
|
//-----------------------------------------------------------------------
|
|
|
|
processor_t LPH =
|
|
{
|
|
IDP_INTERFACE_VERSION, // version
|
|
PLFM_65C816, // id
|
|
// flag
|
|
PR_SEGS
|
|
| PR_SEGTRANS,
|
|
// flag2
|
|
0,
|
|
8, // 8 bits in a byte for code segments
|
|
8, // 8 bits in a byte for other segments
|
|
|
|
shnames,
|
|
lnames,
|
|
|
|
asms,
|
|
|
|
notify,
|
|
|
|
RegNames, // Register names
|
|
qnumber(RegNames), // Number of registers
|
|
|
|
rCs, // first segreg
|
|
rPB, // last segreg
|
|
0, // size of a segment register
|
|
rCs, // number of CS register
|
|
rDs, // number of DS register
|
|
|
|
NULL, // No known code start sequences
|
|
retcodes,
|
|
|
|
0,
|
|
M65816_last,
|
|
Instructions, // instruc
|
|
3, // int tbyte_size; -- doesn't exist
|
|
|
|
{ 0, 0, 0, 0 }, // char real_width[4];
|
|
// number of symbols after decimal point
|
|
// 2byte float (0-does not exist)
|
|
// normal float
|
|
// normal double
|
|
// long double
|
|
M65816_rts, // Icode of return instruction. It is ok to give any of possible return instructions
|
|
};
|
|
|