// license:LGPL-2.1+ // copyright-holders:Tomasz Slanina /******************************************** NEC V810 (upd70732) disassembler Tomasz Slanina - analog[at]op.pl *******************************************/ #include "emu.h" #include "debugger.h" #include "v810.h" #define I5(x) (((x)&0x1f)|(((x)&0x10)?0xffffffe0:0)) #define UI5(x) ((x)&0x1f) #define I16(x) (((x)&0xffff)|(((x)&0x8000)?0xffff0000:0)) #define UI16(x) ((x)&0xffff) #define D16(x) (((x)&0xffff)|(((x)&0x8000)?0xffff0000:0)) #define D26(x,y) ((y)|((x&0x3ff)<<16 )|((x&0x200)?0xfc000000:0)) #define D9(x) ((x&0x1ff)|((x&0x100)?0xfffffe00:0)) static const char *const dRegs[]= { "R0","R1","R2","SP","R4", "R5","R6","R7","R8","R9", "R10","R11","R12","R13", "R14","R15","R16","R17", "R18","R19","R20","R21", "R22","R23","R24","R25", "R26","R27","R28","R29", "R30","R31", "EIPC","EIPSW","FEPC","FEPSW","ECR", "PSW","PIR","TKCW","","", "","","","","", "","","","","", "","","","","CHCW","ADTRE", "","","","","","" }; #define GET1s(opcode) dRegs[(opcode)&0x1f] #define GET2s(opcode) dRegs[((opcode)>>5)&0x1f] #define GETRs(opcode) dRegs[32+((opcode)&0x1f)] static offs_t internal_disasm_v810(cpu_device *device, std::ostream &stream, offs_t pc, const uint8_t *oprom, const uint8_t *opram, int options) { uint32_t flags = 0; uint32_t opc,opc2; unsigned size; opc = oprom[0] | (oprom[1] << 8); opc2 = oprom[2] | (oprom[3] << 8); switch(opc>>10) { case 0x00: util::stream_format(stream,"MOV %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x01: util::stream_format(stream,"ADD %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x02: util::stream_format(stream,"SUB %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x03: util::stream_format(stream,"CMP %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x04: util::stream_format(stream,"SHL %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x05: util::stream_format(stream,"SHR %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x06: util::stream_format(stream,"JMP [%s]",GET1s(opc)); size=2; if ((opc&0x1f) == 31) flags = DASMFLAG_STEP_OUT; break; case 0x07: util::stream_format(stream,"SAR %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x08: util::stream_format(stream,"MUL %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x09: util::stream_format(stream,"DIV %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x0a: util::stream_format(stream,"MULU %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x0b: util::stream_format(stream,"DIVU %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x0c: util::stream_format(stream,"OR %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x0d: util::stream_format(stream,"AND %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x0e: util::stream_format(stream,"XOR %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x0f: util::stream_format(stream,"NOT %s,%s",GET1s(opc),GET2s(opc)); size=2; break; case 0x10: util::stream_format(stream,"MOV %X,%s",I5(opc),GET2s(opc)); size=2; break; case 0x11: util::stream_format(stream,"ADD %X,%s",I5(opc),GET2s(opc)); size=2; break; case 0x12: util::stream_format(stream,"SETF %X,%s",I5(opc),GET2s(opc)); size=2; break; case 0x13: util::stream_format(stream,"CMP %X,%s",I5(opc),GET2s(opc)); size=2; break; case 0x14: util::stream_format(stream,"SHL %X,%s",UI5(opc),GET2s(opc)); size=2; break; case 0x15: util::stream_format(stream,"SHR %X,%s",UI5(opc),GET2s(opc)); size=2; break; case 0x16: util::stream_format(stream,"EI"); size=2; break; case 0x17: util::stream_format(stream,"SAR %X,%s",UI5(opc),GET2s(opc)); size=2; break; case 0x18: util::stream_format(stream,"TRAP %X",I5(opc)); size=2; break; case 0x19: util::stream_format(stream,"RETI"); size=2; flags = DASMFLAG_STEP_OUT; break; case 0x1a: util::stream_format(stream,"HALT"); size=2; break; case 0x1b: util::stream_format(stream,"Unk 0x1B"); size=2; break; case 0x1c: util::stream_format(stream,"LDSR %s,%s",GET2s(opc),GETRs(opc));size=2; break; case 0x1d: util::stream_format(stream,"STSR %s,%s",GETRs(opc),GET2s(opc));size=2; break; case 0x1e: util::stream_format(stream,"DI"); size=2; break; case 0x1f: switch(opc&0x1f) { case 0x00: util::stream_format(stream,"SCH0BSU"); break; case 0x01: util::stream_format(stream,"SCH0BSD"); break; case 0x02: util::stream_format(stream,"SCH1BSU"); break; case 0x03: util::stream_format(stream,"SCH1BSD"); break; case 0x04: util::stream_format(stream,"UnkS 4"); break; case 0x05: util::stream_format(stream,"UnkS 5"); break; case 0x06: util::stream_format(stream,"UnkS 6"); break; case 0x08: util::stream_format(stream,"ORBSU"); break; case 0x09: util::stream_format(stream,"ANDBSU"); break; case 0x0a: util::stream_format(stream,"XORBSU"); break; case 0x0b: util::stream_format(stream,"MOVBSU"); break; case 0x0c: util::stream_format(stream,"ORNBSU"); break; case 0x0d: util::stream_format(stream,"ANDNBSU"); break; case 0x0e: util::stream_format(stream,"XORNBSU"); break; case 0x0f: util::stream_format(stream,"NOTBSU"); break; default: util::stream_format(stream,"UnkBS 0x%X",opc&0x1f); break; } size=2; break; case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: switch( (opc>>9) &0xf) { case 0x0: util::stream_format(stream,"BV %X",pc+D9(opc)); break; case 0x1: util::stream_format(stream,"BL %X",pc+D9(opc)); break; case 0x2: util::stream_format(stream,"BE %X",pc+D9(opc)); break; case 0x3: util::stream_format(stream,"BNH %X",pc+D9(opc)); break; case 0x4: util::stream_format(stream,"BN %X",pc+D9(opc)); break; case 0x5: util::stream_format(stream,"BR %X",pc+D9(opc)); break; case 0x6: util::stream_format(stream,"BLT %X",pc+D9(opc)); break; case 0x7: util::stream_format(stream,"BLE %X",pc+D9(opc)); break; case 0x8: util::stream_format(stream,"BNV %X",pc+D9(opc)); break; case 0x9: util::stream_format(stream,"BNL %X",pc+D9(opc)); break; case 0xa: util::stream_format(stream,"BNE %X",pc+D9(opc)); break; case 0xb: util::stream_format(stream,"BH %X",pc+D9(opc)); break; case 0xc: util::stream_format(stream,"BP %X",pc+D9(opc)); break; case 0xd: util::stream_format(stream,"NOP"); break; case 0xe: util::stream_format(stream,"BGE %X",pc+D9(opc)); break; case 0xf: util::stream_format(stream,"BGT %X",pc+D9(opc)); break; } size=2; break; case 0x28: util::stream_format(stream,"MOVEA %X, %s, %s",I16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x29: util::stream_format(stream,"ADDI %X, %s, %s",I16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x2a: util::stream_format(stream,"JR %X",pc+D26(opc,opc2));size=4; break; case 0x2b: util::stream_format(stream,"JAL %X",pc+D26(opc,opc2));size=4; flags = DASMFLAG_STEP_OVER; break; case 0x2c: util::stream_format(stream,"ORI %X, %s, %s",UI16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x2d: util::stream_format(stream,"ANDI %X, %s, %s",UI16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x2e: util::stream_format(stream,"XORI %X, %s, %s",UI16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x2f: util::stream_format(stream,"MOVHI %X, %s, %s",UI16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x30: util::stream_format(stream,"LDB %X[%s], %s",D16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x31: util::stream_format(stream,"LDH %X[%s], %s",D16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x32: util::stream_format(stream,"Unk 0x32"); size=2; break; case 0x33: util::stream_format(stream,"LDW %X[%s], %s",D16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x34: util::stream_format(stream,"STB %s, %X[%s]",GET2s(opc),D16(opc2),GET1s(opc));size=4; break; case 0x35: util::stream_format(stream,"STH %s, %X[%s]",GET2s(opc),D16(opc2),GET1s(opc));size=4; break; case 0x36: util::stream_format(stream,"Unk 0x36"); size=2; break; case 0x37: util::stream_format(stream,"STW %s, %X[%s]",GET2s(opc),D16(opc2),GET1s(opc));size=4; break; case 0x38: util::stream_format(stream,"INB %X[%s], %s",D16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x39: util::stream_format(stream,"INH %X[%s], %s",D16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x3a: util::stream_format(stream,"CAXI %X[%s], %s",D16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x3b: util::stream_format(stream,"INW %X[%s], %s",D16(opc2),GET1s(opc),GET2s(opc));size=4; break; case 0x3c: util::stream_format(stream,"OUTB %s, %X[%s]",GET2s(opc),D16(opc2),GET1s(opc));size=4; break; case 0x3d: util::stream_format(stream,"OUTH %s, %X[%s]",GET2s(opc),D16(opc2),GET1s(opc));size=4; break; case 0x3e: switch((opc2&0xfc00)>>10) { case 0x0: util::stream_format(stream,"CMPF.S %s, %s",GET1s(opc),GET2s(opc)); break; case 0x2: util::stream_format(stream,"CVT.WS %s, %s",GET1s(opc),GET2s(opc)); break; case 0x3: util::stream_format(stream,"CVT.SW %s, %s",GET1s(opc),GET2s(opc)); break; case 0x4: util::stream_format(stream,"ADDF.S %s, %s",GET1s(opc),GET2s(opc)); break; case 0x5: util::stream_format(stream,"SUBF.S %s, %s",GET1s(opc),GET2s(opc)); break; case 0x6: util::stream_format(stream,"MULF.S %s, %s",GET1s(opc),GET2s(opc)); break; case 0x7: util::stream_format(stream,"DIVF.S %s, %s",GET1s(opc),GET2s(opc)); break; case 0xb: util::stream_format(stream,"TRNC.SW %s, %s",GET1s(opc),GET2s(opc)); break; default : util::stream_format(stream,"Unkf 0x%X",(opc2&0xfc00)>>10); break; } size=4; break; case 0x3f: util::stream_format(stream,"OUTW %s, %X[%s]",GET2s(opc),D16(opc2),GET1s(opc));size=4; break; default : size=2; } return size | flags | DASMFLAG_SUPPORTED; } CPU_DISASSEMBLE(v810) { std::ostringstream stream; offs_t result = internal_disasm_v810(device, stream, pc, oprom, opram, options); std::string stream_str = stream.str(); strcpy(buffer, stream_str.c_str()); return result; }