// license:BSD-3-Clause // copyright-holders:Aaron Giles /* NEC V-series Disassembler Originally Written for i386 by Ville Linde Converted to NEC-V by Aaron Giles */ #include "emu.h" #include "nec_common.h" static const uint8_t *Iconfig; enum { PARAM_REG8 = 1, /* 8-bit register */ PARAM_REG16, /* 16-bit register */ PARAM_REG2_8, /* 8-bit register */ PARAM_REG2_16, /* 16-bit register */ PARAM_RM8, /* 8-bit memory or register */ PARAM_RM16, /* 16-bit memory or register */ PARAM_RMPTR8, /* 8-bit memory or register */ PARAM_RMPTR16, /* 16-bit memory or register */ PARAM_I3, /* 3-bit immediate */ PARAM_I4, /* 4-bit immediate */ PARAM_I8, /* 8-bit signed immediate */ PARAM_I16, /* 16-bit signed immediate */ PARAM_UI8, /* 8-bit unsigned immediate */ PARAM_IMM, /* 16-bit immediate */ PARAM_ADDR, /* 16:16 address */ PARAM_REL8, /* 8-bit PC-relative displacement */ PARAM_REL16, /* 16-bit PC-relative displacement */ PARAM_MEM_OFFS, /* 16-bit mem offset */ PARAM_SREG, /* segment register */ PARAM_SFREG, /* V25/V35 special function register */ PARAM_1, /* used by shift/rotate instructions */ PARAM_AL, PARAM_CL, PARAM_DL, PARAM_BL, PARAM_AH, PARAM_CH, PARAM_DH, PARAM_BH, PARAM_AW, PARAM_CW, PARAM_DW, PARAM_BW, PARAM_SP, PARAM_BP, PARAM_IX, PARAM_IY }; enum { MODRM = 1, GROUP, FPU, TWO_BYTE, PREFIX, SEG_PS, SEG_DS0, SEG_DS1, SEG_SS }; struct NEC_I386_OPCODE { char mnemonic[32]; uint32_t flags; uint32_t param1; uint32_t param2; uint32_t param3; offs_t dasm_flags; }; struct NEC_GROUP_OP { char mnemonic[32]; const NEC_I386_OPCODE *opcode; }; static const uint8_t *opcode_ptr; static const uint8_t *opcode_ptr_base; static const NEC_I386_OPCODE necv_opcode_table1[256] = { // 0x00 {"add", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"add", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"add", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"add", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"add", 0, PARAM_AL, PARAM_UI8, 0 }, {"add", 0, PARAM_AW, PARAM_IMM, 0 }, {"push ds1", 0, 0, 0, 0 }, {"pop ds1", 0, 0, 0, 0 }, {"or", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"or", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"or", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"or", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"or", 0, PARAM_AL, PARAM_UI8, 0 }, {"or", 0, PARAM_AW, PARAM_IMM, 0 }, {"push ps", 0, 0, 0, 0 }, {"two_byte", TWO_BYTE, 0, 0, 0 }, // 0x10 {"addc", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"addc", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"addc", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"addc", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"addc", 0, PARAM_AL, PARAM_UI8, 0 }, {"addc", 0, PARAM_AW, PARAM_IMM, 0 }, {"push ss", 0, 0, 0, 0 }, {"pop ss", 0, 0, 0, 0 }, {"subc", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"subc", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"subc", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"subc", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"subc", 0, PARAM_AL, PARAM_UI8, 0 }, {"subc", 0, PARAM_AW, PARAM_IMM, 0 }, {"push ds0", 0, 0, 0, 0 }, {"pop ds0", 0, 0, 0, 0 }, // 0x20 {"and", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"and", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"and", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"and", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"and", 0, PARAM_AL, PARAM_UI8, 0 }, {"and", 0, PARAM_AW, PARAM_IMM, 0 }, {"ds1:", SEG_DS1, 0, 0, 0 }, {"adj4a", 0, 0, 0, 0 }, {"sub", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"sub", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"sub", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"sub", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"sub", 0, PARAM_AL, PARAM_UI8, 0 }, {"sub", 0, PARAM_AW, PARAM_IMM, 0 }, {"ps:", SEG_PS, 0, 0, 0 }, {"adj4s", 0, 0, 0, 0 }, // 0x30 {"xor", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"xor", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"xor", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"xor", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"xor", 0, PARAM_AL, PARAM_UI8, 0 }, {"xor", 0, PARAM_AW, PARAM_IMM, 0 }, {"ss:", SEG_SS, 0, 0, 0 }, {"adjba", 0, 0, 0, 0 }, {"cmp", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"cmp", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"cmp", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"cmp", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"cmp", 0, PARAM_AL, PARAM_UI8, 0 }, {"cmp", 0, PARAM_AW, PARAM_IMM, 0 }, {"ds0:", SEG_DS0, 0, 0, 0 }, {"adjbs", 0, 0, 0, 0 }, // 0x40 {"inc", 0, PARAM_AW, 0, 0 }, {"inc", 0, PARAM_CW, 0, 0 }, {"inc", 0, PARAM_DW, 0, 0 }, {"inc", 0, PARAM_BW, 0, 0 }, {"inc", 0, PARAM_SP, 0, 0 }, {"inc", 0, PARAM_BP, 0, 0 }, {"inc", 0, PARAM_IX, 0, 0 }, {"inc", 0, PARAM_IY, 0, 0 }, {"dec", 0, PARAM_AW, 0, 0 }, {"dec", 0, PARAM_CW, 0, 0 }, {"dec", 0, PARAM_DW, 0, 0 }, {"dec", 0, PARAM_BW, 0, 0 }, {"dec", 0, PARAM_SP, 0, 0 }, {"dec", 0, PARAM_BP, 0, 0 }, {"dec", 0, PARAM_IX, 0, 0 }, {"dec", 0, PARAM_IY, 0, 0 }, // 0x50 {"push", 0, PARAM_AW, 0, 0 }, {"push", 0, PARAM_CW, 0, 0 }, {"push", 0, PARAM_DW, 0, 0 }, {"push", 0, PARAM_BW, 0, 0 }, {"push", 0, PARAM_SP, 0, 0 }, {"push", 0, PARAM_BP, 0, 0 }, {"push", 0, PARAM_IX, 0, 0 }, {"push", 0, PARAM_IY, 0, 0 }, {"pop", 0, PARAM_AW, 0, 0 }, {"pop", 0, PARAM_CW, 0, 0 }, {"pop", 0, PARAM_DW, 0, 0 }, {"pop", 0, PARAM_BW, 0, 0 }, {"pop", 0, PARAM_SP, 0, 0 }, {"pop", 0, PARAM_BP, 0, 0 }, {"pop", 0, PARAM_IX, 0, 0 }, {"pop", 0, PARAM_IY, 0, 0 }, // 0x60 {"push r", 0, 0, 0, 0 }, {"pop r", 0, 0, 0, 0 }, {"chkind", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"brkn", 0, PARAM_UI8, 0, 0, DASMFLAG_STEP_OVER}, /* V25S/V35S only */ {"repnc", PREFIX, 0, 0, 0 }, {"repc", PREFIX, 0, 0, 0 }, {"fpo2 0", 0, 0, 0, 0 }, /* for a coprocessor that was never made */ {"fpo2 1", 0, 0, 0, 0 }, /* for a coprocessor that was never made */ {"push", 0, PARAM_IMM, 0, 0 }, {"mul", MODRM, PARAM_REG16, PARAM_RM16, PARAM_IMM }, {"push", 0, PARAM_I8, 0, 0 }, {"mul", MODRM, PARAM_REG16, PARAM_RM16, PARAM_I8 }, {"inmb", 0, 0, 0, 0 }, {"inmw", 0, 0, 0, 0 }, {"outmb", 0, 0, 0, 0 }, {"outmw", 0, 0, 0, 0 }, // 0x70 {"bv", 0, PARAM_REL8, 0, 0 }, {"bnv", 0, PARAM_REL8, 0, 0 }, {"bc", 0, PARAM_REL8, 0, 0 }, {"bnc", 0, PARAM_REL8, 0, 0 }, {"be", 0, PARAM_REL8, 0, 0 }, {"bne", 0, PARAM_REL8, 0, 0 }, {"bnh", 0, PARAM_REL8, 0, 0 }, {"bh", 0, PARAM_REL8, 0, 0 }, {"bn", 0, PARAM_REL8, 0, 0 }, {"bp", 0, PARAM_REL8, 0, 0 }, {"bpe", 0, PARAM_REL8, 0, 0 }, {"bpo", 0, PARAM_REL8, 0, 0 }, {"blt", 0, PARAM_REL8, 0, 0 }, {"bge", 0, PARAM_REL8, 0, 0 }, {"ble", 0, PARAM_REL8, 0, 0 }, {"bgt", 0, PARAM_REL8, 0, 0 }, // 0x80 {"immb", GROUP, 0, 0, 0 }, {"immw", GROUP, 0, 0, 0 }, {"immb", GROUP, 0, 0, 0 }, {"immws", GROUP, 0, 0, 0 }, {"test", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"test", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"xch", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"xch", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"mov", MODRM, PARAM_RM8, PARAM_REG8, 0 }, {"mov", MODRM, PARAM_RM16, PARAM_REG16, 0 }, {"mov", MODRM, PARAM_REG8, PARAM_RM8, 0 }, {"mov", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"mov", MODRM, PARAM_RM16, PARAM_SREG, 0 }, {"ldea", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"mov", MODRM, PARAM_SREG, PARAM_RM16, 0 }, {"pop", MODRM, PARAM_RM16, 0, 0 }, // 0x90 {"nop", 0, 0, 0, 0 }, {"xch", 0, PARAM_AW, PARAM_CW, 0 }, {"xch", 0, PARAM_AW, PARAM_DW, 0 }, {"xch", 0, PARAM_AW, PARAM_BW, 0 }, {"xch", 0, PARAM_AW, PARAM_SP, 0 }, {"xch", 0, PARAM_AW, PARAM_BP, 0 }, {"xch", 0, PARAM_AW, PARAM_IX, 0 }, {"xch", 0, PARAM_AW, PARAM_IY, 0 }, {"cvtbw", 0, 0, 0, 0 }, {"cvtwl", 0, 0, 0, 0 }, {"call", 0, PARAM_ADDR, 0, 0, DASMFLAG_STEP_OVER}, {"poll", 0, 0, 0, 0 }, {"push psw", 0, 0, 0, 0 }, {"pop psw", 0, 0, 0, 0 }, {"mov psw,ah", 0, 0, 0, 0 }, {"mov ah,psw", 0, 0, 0, 0 }, // 0xa0 {"mov", 0, PARAM_AL, PARAM_MEM_OFFS, 0 }, {"mov", 0, PARAM_AW, PARAM_MEM_OFFS, 0 }, {"mov", 0, PARAM_MEM_OFFS, PARAM_AL, 0 }, {"mov", 0, PARAM_MEM_OFFS, PARAM_AW, 0 }, {"movbkb", 0, 0, 0, 0 }, {"movbkw", 0, 0, 0, 0 }, {"cmpbkb", 0, 0, 0, 0 }, {"cmpbkw", 0, 0, 0, 0 }, {"test", 0, PARAM_AL, PARAM_UI8, 0 }, {"test", 0, PARAM_AW, PARAM_IMM, 0 }, {"stmb", 0, 0, 0, 0 }, {"stmw", 0, 0, 0, 0 }, {"ldmb", 0, 0, 0, 0 }, {"ldmw", 0, 0, 0, 0 }, {"cmpmb", 0, 0, 0, 0 }, {"cmpmw", 0, 0, 0, 0 }, // 0xb0 {"mov", 0, PARAM_AL, PARAM_UI8, 0 }, {"mov", 0, PARAM_CL, PARAM_UI8, 0 }, {"mov", 0, PARAM_DL, PARAM_UI8, 0 }, {"mov", 0, PARAM_BL, PARAM_UI8, 0 }, {"mov", 0, PARAM_AH, PARAM_UI8, 0 }, {"mov", 0, PARAM_CH, PARAM_UI8, 0 }, {"mov", 0, PARAM_DH, PARAM_UI8, 0 }, {"mov", 0, PARAM_BH, PARAM_UI8, 0 }, {"mov", 0, PARAM_AW, PARAM_IMM, 0 }, {"mov", 0, PARAM_CW, PARAM_IMM, 0 }, {"mov", 0, PARAM_DW, PARAM_IMM, 0 }, {"mov", 0, PARAM_BW, PARAM_IMM, 0 }, {"mov", 0, PARAM_SP, PARAM_IMM, 0 }, {"mov", 0, PARAM_BP, PARAM_IMM, 0 }, {"mov", 0, PARAM_IX, PARAM_IMM, 0 }, {"mov", 0, PARAM_IY, PARAM_IMM, 0 }, // 0xc0 {"shiftbi", GROUP, 0, 0, 0 }, {"shiftwi", GROUP, 0, 0, 0 }, {"ret", 0, PARAM_I16, 0, 0, DASMFLAG_STEP_OUT}, {"ret", 0, 0, 0, 0, DASMFLAG_STEP_OUT}, {"mov ds1,", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"mov ds0,", MODRM, PARAM_REG16, PARAM_RM16, 0 }, {"mov", MODRM, PARAM_RMPTR8, PARAM_UI8, 0 }, {"mov", MODRM, PARAM_RMPTR16, PARAM_IMM, 0 }, {"prepare", 0, PARAM_I16, PARAM_UI8, 0 }, {"dispose", 0, 0, 0, 0 }, {"retf", 0, PARAM_I16, 0, 0, DASMFLAG_STEP_OUT}, {"retf", 0, 0, 0, 0, DASMFLAG_STEP_OUT}, {"brk 3", 0, 0, 0, 0, DASMFLAG_STEP_OVER}, {"brk", 0, PARAM_UI8, 0, 0, DASMFLAG_STEP_OVER}, {"brkv", 0, 0, 0, 0 }, {"reti", 0, 0, 0, 0, DASMFLAG_STEP_OUT}, // 0xd0 {"shiftb", GROUP, 0, 0, 0 }, {"shiftw", GROUP, 0, 0, 0 }, {"shiftbv", GROUP, 0, 0, 0 }, {"shiftwv", GROUP, 0, 0, 0 }, {"cvtbd", 0, PARAM_I8, 0, 0 }, {"cvtdb", 0, PARAM_I8, 0, 0 }, {"???", 0, 0, 0, 0 }, {"trans", 0, 0, 0, 0 }, {"escape", FPU, 0, 0, 0 }, {"escape", FPU, 0, 0, 0 }, {"escape", FPU, 0, 0, 0 }, {"escape", FPU, 0, 0, 0 }, {"escape", FPU, 0, 0, 0 }, {"escape", FPU, 0, 0, 0 }, {"escape", FPU, 0, 0, 0 }, {"escape", FPU, 0, 0, 0 }, // 0xe0 {"dbnzne", 0, PARAM_REL8, 0, 0, DASMFLAG_STEP_OVER}, {"dbnze", 0, PARAM_REL8, 0, 0, DASMFLAG_STEP_OVER}, {"dbnz", 0, PARAM_REL8, 0, 0, DASMFLAG_STEP_OVER}, {"bcwz", 0, PARAM_REL8, 0, 0 }, {"in", 0, PARAM_AL, PARAM_UI8, 0 }, {"in", 0, PARAM_AW, PARAM_UI8, 0 }, {"out", 0, PARAM_UI8, PARAM_AL, 0 }, {"out", 0, PARAM_UI8, PARAM_AW, 0 }, {"call", 0, PARAM_REL16, 0, 0, DASMFLAG_STEP_OVER}, {"br", 0, PARAM_REL16, 0, 0 }, {"br", 0, PARAM_ADDR, 0, 0 }, {"br", 0, PARAM_REL8, 0, 0 }, {"in", 0, PARAM_AL, PARAM_DW, 0 }, {"in", 0, PARAM_AW, PARAM_DW, 0 }, {"out", 0, PARAM_DW, PARAM_AL, 0 }, {"out", 0, PARAM_DW, PARAM_AW, 0 }, // 0xf0 {"buslock", PREFIX, 0, 0, 0 }, {"brks", 0, PARAM_UI8, 0, 0, DASMFLAG_STEP_OVER}, /* V25S/V35S only */ {"repne", PREFIX, 0, 0, 0 }, {"rep", PREFIX, 0, 0, 0 }, {"halt", 0, 0, 0, 0 }, {"not1 cy", 0, 0, 0, 0 }, {"group1b", GROUP, 0, 0, 0 }, {"group1w", GROUP, 0, 0, 0 }, {"clr1 cy", 0, 0, 0, 0 }, {"set1 cy", 0, 0, 0, 0 }, {"di", 0, 0, 0, 0 }, {"ei", 0, 0, 0, 0 }, {"clr1 dir", 0, 0, 0, 0 }, {"set1 dir", 0, 0, 0, 0 }, {"group2b", GROUP, 0, 0, 0 }, {"group2w", GROUP, 0, 0, 0 } }; static const NEC_I386_OPCODE necv_opcode_table2[256] = { // 0x00 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0x10 {"test1", MODRM, PARAM_RMPTR8, PARAM_CL, 0 }, {"test1", MODRM, PARAM_RMPTR16, PARAM_CL, 0 }, {"clr1", MODRM, PARAM_RMPTR8, PARAM_CL, 0 }, {"clr1", MODRM, PARAM_RMPTR16, PARAM_CL, 0 }, {"set1", MODRM, PARAM_RMPTR8, PARAM_CL, 0 }, {"set1", MODRM, PARAM_RMPTR16, PARAM_CL, 0 }, {"not1", MODRM, PARAM_RMPTR8, PARAM_CL, 0 }, {"not1", MODRM, PARAM_RMPTR16, PARAM_CL, 0 }, {"test1", MODRM, PARAM_RMPTR8, PARAM_I3, 0 }, {"test1", MODRM, PARAM_RMPTR16, PARAM_I4, 0 }, {"clr1", MODRM, PARAM_RMPTR8, PARAM_I3, 0 }, {"clr1", MODRM, PARAM_RMPTR16, PARAM_I4, 0 }, {"set1", MODRM, PARAM_RMPTR8, PARAM_I3, 0 }, {"set1", MODRM, PARAM_RMPTR16, PARAM_I4, 0 }, {"not1", MODRM, PARAM_RMPTR8, PARAM_I3, 0 }, {"not1", MODRM, PARAM_RMPTR16, PARAM_I4, 0 }, // 0x20 {"add4s", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"sub4s", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"movspa", 0, 0, 0, 0 }, /* V25/V35 only */ {"cmp4s", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"rol4", MODRM, PARAM_RMPTR8, 0, 0 }, {"???", 0, 0, 0, 0 }, {"ror4", MODRM, PARAM_RMPTR8, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"brkcs", MODRM, PARAM_REG2_16, 0, 0, DASMFLAG_STEP_OVER}, /* V25/V35 only */ {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0x30 {"???", 0, 0, 0, 0 }, {"ins", MODRM, PARAM_REG2_8, PARAM_REG8, 0 }, {"???", 0, 0, 0, 0 }, {"ext", MODRM, PARAM_REG2_8, PARAM_REG8, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"ins", MODRM, PARAM_REG2_8, PARAM_I4, 0 }, {"???", 0, 0, 0, 0 }, {"ext", MODRM, PARAM_REG2_8, PARAM_I4, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0x40 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0x50 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0x60 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0x70 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0x80 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0x90 {"???", 0, 0, 0, 0 }, {"retrbi", 0, 0, 0, 0 }, /* V25/V35 only */ {"fint", 0, 0, 0, 0 }, /* V25/V35 only */ {"???", 0, 0, 0, 0 }, {"tsksw", MODRM, PARAM_REG2_16, 0, 0 }, /* V25/V35 only */ {"movspb", MODRM, PARAM_REG2_16, 0, 0 }, /* V25/V35 only */ {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"btclr", 0, PARAM_SFREG, PARAM_I3, PARAM_REL8 }, /* V25/V35 only */ {"???", 0, 0, 0, 0 }, {"stop", 0, 0, 0, 0 }, /* V25/V35 only */ {"???", 0, 0, 0, 0 }, // 0xa0 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0xb0 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0xc0 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0xd0 {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0xe0 {"brkxa", 0, PARAM_UI8, 0, 0 }, /* V33,53 only */ {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, // 0xf0 {"retxa", 0, PARAM_UI8, 0, 0 }, /* V33,53 only */ {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"brkem", 0, PARAM_UI8, 0, 0 } /* V20,30,40,50 only */ }; static const NEC_I386_OPCODE immb_table[8] = { {"add", 0, PARAM_RMPTR8, PARAM_UI8, 0 }, {"or", 0, PARAM_RMPTR8, PARAM_UI8, 0 }, {"addc", 0, PARAM_RMPTR8, PARAM_UI8, 0 }, {"subc", 0, PARAM_RMPTR8, PARAM_UI8, 0 }, {"and", 0, PARAM_RMPTR8, PARAM_UI8, 0 }, {"sub", 0, PARAM_RMPTR8, PARAM_UI8, 0 }, {"xor", 0, PARAM_RMPTR8, PARAM_UI8, 0 }, {"cmp", 0, PARAM_RMPTR8, PARAM_UI8, 0 } }; static const NEC_I386_OPCODE immw_table[8] = { {"add", 0, PARAM_RMPTR16, PARAM_IMM, 0 }, {"or", 0, PARAM_RMPTR16, PARAM_IMM, 0 }, {"addc", 0, PARAM_RMPTR16, PARAM_IMM, 0 }, {"subc", 0, PARAM_RMPTR16, PARAM_IMM, 0 }, {"and", 0, PARAM_RMPTR16, PARAM_IMM, 0 }, {"sub", 0, PARAM_RMPTR16, PARAM_IMM, 0 }, {"xor", 0, PARAM_RMPTR16, PARAM_IMM, 0 }, {"cmp", 0, PARAM_RMPTR16, PARAM_IMM, 0 } }; static const NEC_I386_OPCODE immws_table[8] = { {"add", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"or", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"addc", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"subc", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"and", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"sub", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"xor", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"cmp", 0, PARAM_RMPTR16, PARAM_I8, 0 } }; static const NEC_I386_OPCODE shiftbi_table[8] = { {"rol", 0, PARAM_RMPTR8, PARAM_I8, 0 }, {"ror", 0, PARAM_RMPTR8, PARAM_I8, 0 }, {"rolc", 0, PARAM_RMPTR8, PARAM_I8, 0 }, {"rorc", 0, PARAM_RMPTR8, PARAM_I8, 0 }, {"shl", 0, PARAM_RMPTR8, PARAM_I8, 0 }, {"shr", 0, PARAM_RMPTR8, PARAM_I8, 0 }, {"???", 0, PARAM_RMPTR8, PARAM_I8, 0 }, {"shra", 0, PARAM_RMPTR8, PARAM_I8, 0 } }; static const NEC_I386_OPCODE shiftwi_table[8] = { {"rol", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"ror", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"rolc", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"rorc", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"shl", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"shr", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"???", 0, PARAM_RMPTR16, PARAM_I8, 0 }, {"shra", 0, PARAM_RMPTR16, PARAM_I8, 0 } }; static const NEC_I386_OPCODE shiftb_table[8] = { {"rol", 0, PARAM_RMPTR8, PARAM_1, 0 }, {"ror", 0, PARAM_RMPTR8, PARAM_1, 0 }, {"rolc", 0, PARAM_RMPTR8, PARAM_1, 0 }, {"rorc", 0, PARAM_RMPTR8, PARAM_1, 0 }, {"shl", 0, PARAM_RMPTR8, PARAM_1, 0 }, {"shr", 0, PARAM_RMPTR8, PARAM_1, 0 }, {"???", 0, PARAM_RMPTR8, PARAM_1, 0 }, {"shra", 0, PARAM_RMPTR8, PARAM_1, 0 } }; static const NEC_I386_OPCODE shiftw_table[8] = { {"rol", 0, PARAM_RMPTR16, PARAM_1, 0 }, {"ror", 0, PARAM_RMPTR16, PARAM_1, 0 }, {"rolc", 0, PARAM_RMPTR16, PARAM_1, 0 }, {"rorc", 0, PARAM_RMPTR16, PARAM_1, 0 }, {"shl", 0, PARAM_RMPTR16, PARAM_1, 0 }, {"shr", 0, PARAM_RMPTR16, PARAM_1, 0 }, {"???", 0, PARAM_RMPTR16, PARAM_1, 0 }, {"shra", 0, PARAM_RMPTR16, PARAM_1, 0 } }; static const NEC_I386_OPCODE shiftbv_table[8] = { {"rol", 0, PARAM_RMPTR8, PARAM_CL, 0 }, {"ror", 0, PARAM_RMPTR8, PARAM_CL, 0 }, {"rolc", 0, PARAM_RMPTR8, PARAM_CL, 0 }, {"rorc", 0, PARAM_RMPTR8, PARAM_CL, 0 }, {"shl", 0, PARAM_RMPTR8, PARAM_CL, 0 }, {"shr", 0, PARAM_RMPTR8, PARAM_CL, 0 }, {"???", 0, PARAM_RMPTR8, PARAM_CL, 0 }, {"shra", 0, PARAM_RMPTR8, PARAM_CL, 0 } }; static const NEC_I386_OPCODE shiftwv_table[8] = { {"rol", 0, PARAM_RMPTR16, PARAM_CL, 0 }, {"ror", 0, PARAM_RMPTR16, PARAM_CL, 0 }, {"rolc", 0, PARAM_RMPTR16, PARAM_CL, 0 }, {"rorc", 0, PARAM_RMPTR16, PARAM_CL, 0 }, {"shl", 0, PARAM_RMPTR16, PARAM_CL, 0 }, {"shr", 0, PARAM_RMPTR16, PARAM_CL, 0 }, {"???", 0, PARAM_RMPTR16, PARAM_CL, 0 }, {"shra", 0, PARAM_RMPTR16, PARAM_CL, 0 } }; static const NEC_I386_OPCODE group1b_table[8] = { {"test", 0, PARAM_RMPTR8, PARAM_UI8, 0 }, {"???", 0, 0, 0, 0 }, {"not", 0, PARAM_RMPTR8, 0, 0 }, {"neg", 0, PARAM_RMPTR8, 0, 0 }, {"mulu", 0, PARAM_RMPTR8, 0, 0 }, {"mul", 0, PARAM_RMPTR8, 0, 0 }, {"divu", 0, PARAM_RMPTR8, 0, 0 }, {"div", 0, PARAM_RMPTR8, 0, 0 } }; static const NEC_I386_OPCODE group1w_table[8] = { {"test", 0, PARAM_RMPTR16, PARAM_IMM, 0 }, {"???", 0, 0, 0, 0 }, {"not", 0, PARAM_RMPTR16, 0, 0 }, {"neg", 0, PARAM_RMPTR16, 0, 0 }, {"mulu", 0, PARAM_RMPTR16, 0, 0 }, {"mul", 0, PARAM_RMPTR16, 0, 0 }, {"divu", 0, PARAM_RMPTR16, 0, 0 }, {"div", 0, PARAM_RMPTR16, 0, 0 } }; static const NEC_I386_OPCODE group2b_table[8] = { {"inc", 0, PARAM_RMPTR8, 0, 0 }, {"dec", 0, PARAM_RMPTR8, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 }, {"???", 0, 0, 0, 0 } }; static const NEC_I386_OPCODE group2w_table[8] = { {"inc", 0, PARAM_RMPTR16, 0, 0 }, {"dec", 0, PARAM_RMPTR16, 0, 0 }, {"call", 0, PARAM_RMPTR16, 0, 0, DASMFLAG_STEP_OVER}, {"call far ptr ",0, PARAM_RM16, 0, 0, DASMFLAG_STEP_OVER}, {"br", 0, PARAM_RMPTR16, 0, 0 }, {"br far ptr ",0, PARAM_RM16, 0, 0 }, {"push", 0, PARAM_RMPTR16, 0, 0 }, {"???", 0, 0, 0, 0 } }; static const NEC_GROUP_OP group_op_table[] = { { "immb", immb_table }, { "immw", immw_table }, { "immws", immws_table }, { "shiftbi", shiftbi_table }, { "shiftwi", shiftwi_table }, { "shiftb", shiftb_table }, { "shiftw", shiftw_table }, { "shiftbv", shiftbv_table }, { "shiftwv", shiftwv_table }, { "group1b", group1b_table }, { "group1w", group1w_table }, { "group2b", group2b_table }, { "group2w", group2w_table } }; static const char *const nec_reg[8] = { "aw", "cw", "dw", "bw", "sp", "bp", "ix", "iy" }; static const char *const nec_reg8[8] = { "al", "cl", "dl", "bl", "ah", "ch", "dh", "bh" }; static const char *const nec_sreg[8] = { "ds1", "ps", "ss", "ds0", "???", "???", "???", "???" }; static const char *const nec_sfreg[256] = { /* 0x00 */ "p0", "pm0", "pmc0", "???", "???", "???", "???", "???", "p1", "pm1", "pmc1", "???", "???", "???", "???", "???", /* 0x10 */ "p2", "pm2", "pmc2", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", /* 0x20 */ "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", /* 0x30 */ "???", "???", "???", "???", "???", "???", "???", "???", "pt", "???", "???", "pmt", "???", "???", "???", "???", /* 0x40 */ "intm", "???", "???", "???", "ems0", "ems1", "ems2", "???", "???", "???", "???", "???", "exic0","exic1","exic2","???", /* 0x50 */ "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", /* 0x60 */ "rxb0", "???", "txb0", "???", "???", "srms0","stms0","???", "scm0", "scc0", "brg0", "scs0", "seic0","sric0","stic0","???", /* 0x70 */ "rxb1", "???", "txb1", "???", "???", "srms1","stms1","???", "scm1", "scc1", "brg1", "scs1", "seic1","sric1","stic1","???", /* 0x80 */ "tm0", "???", "md0", "???", "???", "???", "???", "???", "tm1", "???", "md1", "???", "???", "???", "???", "???", /* 0x90 */ "tmc0", "tmc1", "???", "???", "tmms0","tmms1","tmms2","???", "???", "???", "???", "???", "tmic0","tmic1","tmic2","???", /* 0xa0 */ "dmac0","dmam0","dmac1","dmam1","???", "???", "???", "???", "???", "???", "???", "???", "dic0", "dic1", "???", "???", /* 0xb0 */ "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", /* 0xc0 */ "sar0l","sar0m","sar0h","???", "dar0l","dar0m","dar0h","???", "tc0l", "tc0h", "???", "???", "???", "???", "???", "???", /* 0xd0 */ "sar1l","sar1m","sar1h","???", "dar1l","dar1m","dar1h","???", "tc1l", "tc1h", "???", "???", "???", "???", "???", "???", /* 0xe0 */ "stbc", "rfm", "???", "???", "???", "???", "???", "???", "wtc", "???", "flag", "prc", "tbic", "???", "???", "irqs", /* 0xf0 */ "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "???", "ispr", "???", "???", "idb" }; static uint32_t pc; static uint8_t modrm; static uint32_t segment; static offs_t dasm_flags; static char modrm_string[256]; #define MODRM_REG1 ((modrm >> 3) & 0x7) #define MODRM_REG2 (modrm & 0x7) #define MAX_LENGTH 8 static inline uint8_t FETCH(void) { if ((opcode_ptr - opcode_ptr_base) + 1 > MAX_LENGTH) return 0xff; pc++; return *opcode_ptr++; } #if 0 static inline uint16_t FETCH16(void) { uint16_t d; if ((opcode_ptr - opcode_ptr_base) + 2 > MAX_LENGTH) return 0xffff; d = opcode_ptr[0] | (opcode_ptr[1] << 8); opcode_ptr += 2; pc += 2; return d; } #endif static inline uint8_t FETCHD(void) { if ((opcode_ptr - opcode_ptr_base) + 1 > MAX_LENGTH) return 0xff; pc++; return *opcode_ptr++; } static inline uint16_t FETCHD16(void) { uint16_t d; if ((opcode_ptr - opcode_ptr_base) + 2 > MAX_LENGTH) return 0xffff; d = opcode_ptr[0] | (opcode_ptr[1] << 8); opcode_ptr += 2; pc += 2; return d; } static char *hexstring(uint32_t value, int digits) { static char buffer[20]; buffer[0] = '0'; if (digits) sprintf(&buffer[1], "%0*Xh", digits, value); else sprintf(&buffer[1], "%Xh", value); return (buffer[1] >= '0' && buffer[1] <= '9') ? &buffer[1] : &buffer[0]; } static char *shexstring(uint32_t value, int digits, bool always) { static char buffer[20]; if (value >= 0x80000000) sprintf(buffer, "-%s", hexstring(-value, digits)); else if (always) sprintf(buffer, "+%s", hexstring(value, digits)); else return hexstring(value, digits); return buffer; } static void handle_modrm(char* s) { int8_t disp8; int16_t disp16; uint8_t mod, rm; modrm = FETCHD(); mod = (modrm >> 6) & 0x3; rm = (modrm & 0x7); if( modrm >= 0xc0 ) return; switch(segment) { case SEG_PS: s += sprintf( s, "ps:" ); break; case SEG_DS0: s += sprintf( s, "ds0:" ); break; case SEG_DS1: s += sprintf( s, "ds1:" ); break; case SEG_SS: s += sprintf( s, "ss:" ); break; } s += sprintf( s, "[" ); switch( rm ) { case 0: s += sprintf( s, "bw+ix" ); break; case 1: s += sprintf( s, "bw+iy" ); break; case 2: s += sprintf( s, "bp+ix" ); break; case 3: s += sprintf( s, "bp+iy" ); break; case 4: s += sprintf( s, "ix" ); break; case 5: s += sprintf( s, "iy" ); break; case 6: if( mod == 0 ) { disp16 = FETCHD16(); s += sprintf( s, "%s", hexstring((unsigned) (uint16_t) disp16, 0) ); } else { s += sprintf( s, "bp" ); } break; case 7: s += sprintf( s, "bw" ); break; } if( mod == 1 ) { disp8 = FETCHD(); s += sprintf( s, "%s", shexstring((int32_t)disp8, 0, true) ); } else if( mod == 2 ) { disp16 = FETCHD16(); s += sprintf( s, "%s", shexstring((int32_t)disp16, 0, true) ); } s += sprintf( s, "]" );} static void handle_param(std::ostream &stream, uint32_t param) { uint8_t i8; uint16_t i16; uint16_t ptr; uint32_t addr; int8_t d8; int16_t d16; switch(param) { case PARAM_REG8: util::stream_format( stream, "%s", nec_reg8[MODRM_REG1] ); break; case PARAM_REG16: util::stream_format( stream, "%s", nec_reg[MODRM_REG1] ); break; case PARAM_REG2_8: util::stream_format( stream, "%s", nec_reg8[MODRM_REG2] ); break; case PARAM_REG2_16: util::stream_format( stream, "%s", nec_reg[MODRM_REG2] ); break; case PARAM_RM8: case PARAM_RMPTR8: if( modrm >= 0xc0 ) { util::stream_format( stream, "%s", nec_reg8[MODRM_REG2] ); } else { if (param == PARAM_RMPTR8) util::stream_format( stream, "byte ptr " ); util::stream_format( stream, "%s", modrm_string ); } break; case PARAM_RM16: case PARAM_RMPTR16: if( modrm >= 0xc0 ) { util::stream_format( stream, "%s", nec_reg[MODRM_REG2] ); } else { if (param == PARAM_RMPTR16) util::stream_format( stream, "word ptr " ); util::stream_format( stream, "%s", modrm_string ); } break; case PARAM_I3: i8 = FETCHD(); util::stream_format( stream, "%d", i8 & 0x07 ); break; case PARAM_I4: i8 = FETCHD(); util::stream_format( stream, "%d", i8 & 0x0f ); break; case PARAM_I8: i8 = FETCHD(); util::stream_format( stream, "%s", shexstring((int8_t)i8, 0, false) ); break; case PARAM_I16: i16 = FETCHD16(); util::stream_format( stream, "%s", shexstring((int16_t)i16, 0, false) ); break; case PARAM_UI8: i8 = FETCHD(); util::stream_format( stream, "%s", shexstring((uint8_t)i8, 0, false) ); break; case PARAM_IMM: i16 = FETCHD16(); util::stream_format( stream, "%s", hexstring(i16, 0) ); break; case PARAM_ADDR: addr = FETCHD16(); ptr = FETCHD16(); util::stream_format( stream, "%s:", hexstring(ptr, 4) ); util::stream_format( stream, "%s", hexstring(addr, 0) ); break; case PARAM_REL16: /* make sure to keep the relative offset within the segment */ d16 = FETCHD16(); util::stream_format( stream, "%s", hexstring((pc & 0xFFFF0000) | ((pc + d16) & 0x0000FFFF), 0) ); break; case PARAM_REL8: d8 = FETCHD(); util::stream_format( stream, "%s", hexstring(pc + d8, 0) ); break; case PARAM_MEM_OFFS: switch(segment) { case SEG_PS: util::stream_format( stream, "ps:" ); break; case SEG_DS0: util::stream_format( stream, "ds0:" ); break; case SEG_DS1: util::stream_format( stream, "ds1:" ); break; case SEG_SS: util::stream_format( stream, "ss:" ); break; } i16 = FETCHD16(); util::stream_format( stream, "[%s]", hexstring(i16, 0) ); break; case PARAM_SREG: util::stream_format( stream, "%s", nec_sreg[MODRM_REG1] ); break; case PARAM_SFREG: i8 = FETCHD(); util::stream_format( stream, "%s", nec_sfreg[i8] ); break; case PARAM_1: util::stream_format( stream, "1" ); break; case PARAM_AL: util::stream_format( stream, "al" ); break; case PARAM_CL: util::stream_format( stream, "cl" ); break; case PARAM_DL: util::stream_format( stream, "dl" ); break; case PARAM_BL: util::stream_format( stream, "bl" ); break; case PARAM_AH: util::stream_format( stream, "ah" ); break; case PARAM_CH: util::stream_format( stream, "ch" ); break; case PARAM_DH: util::stream_format( stream, "dh" ); break; case PARAM_BH: util::stream_format( stream, "bh" ); break; case PARAM_AW: util::stream_format( stream, "aw" ); break; case PARAM_CW: util::stream_format( stream, "cw" ); break; case PARAM_DW: util::stream_format( stream, "dw" ); break; case PARAM_BW: util::stream_format( stream, "bw" ); break; case PARAM_SP: util::stream_format( stream, "sp" ); break; case PARAM_BP: util::stream_format( stream, "bp" ); break; case PARAM_IX: util::stream_format( stream, "ix" ); break; case PARAM_IY: util::stream_format( stream, "iy" ); break; } } static void handle_fpu(std::ostream &stream, uint8_t op1, uint8_t op2) { switch (op1 & 0x7) { case 0: // Group D8 { if (op2 < 0xc0) { pc--; // adjust fetch pointer, so modrm byte read again opcode_ptr--; handle_modrm( modrm_string ); switch ((op2 >> 3) & 0x7) { case 0: util::stream_format(stream, "fadd dword ptr %s", modrm_string); break; case 1: util::stream_format(stream, "fmul dword ptr %s", modrm_string); break; case 2: util::stream_format(stream, "fcom dword ptr %s", modrm_string); break; case 3: util::stream_format(stream, "fcomp dword ptr %s", modrm_string); break; case 4: util::stream_format(stream, "fsub dword ptr %s", modrm_string); break; case 5: util::stream_format(stream, "fsubr dword ptr %s", modrm_string); break; case 6: util::stream_format(stream, "fdiv dword ptr %s", modrm_string); break; case 7: util::stream_format(stream, "fdivr dword ptr %s", modrm_string); break; } } else { switch ((op2 >> 3) & 0x7) { case 0: util::stream_format(stream, "fadd st(0),st(%d)", op2 & 0x7); break; case 1: util::stream_format(stream, "fcom st(0),st(%d)", op2 & 0x7); break; case 2: util::stream_format(stream, "fsub st(0),st(%d)", op2 & 0x7); break; case 3: util::stream_format(stream, "fdiv st(0),st(%d)", op2 & 0x7); break; case 4: util::stream_format(stream, "fmul st(0),st(%d)", op2 & 0x7); break; case 5: util::stream_format(stream, "fcomp st(0),st(%d)", op2 & 0x7); break; case 6: util::stream_format(stream, "fsubr st(0),st(%d)", op2 & 0x7); break; case 7: util::stream_format(stream, "fdivr st(0),st(%d)", op2 & 0x7); break; } } break; } case 1: // Group D9 { if (op2 < 0xc0) { pc--; // adjust fetch pointer, so modrm byte read again opcode_ptr--; handle_modrm( modrm_string ); switch ((op2 >> 3) & 0x7) { case 0: util::stream_format(stream, "fld dword ptr %s", modrm_string); break; case 1: util::stream_format(stream, "??? (FPU)"); break; case 2: util::stream_format(stream, "fst dword ptr %s", modrm_string); break; case 3: util::stream_format(stream, "fstp dword ptr %s", modrm_string); break; case 4: util::stream_format(stream, "fldenv word ptr %s", modrm_string); break; case 5: util::stream_format(stream, "fldcw word ptr %s", modrm_string); break; case 6: util::stream_format(stream, "fstenv word ptr %s", modrm_string); break; case 7: util::stream_format(stream, "fstcw word ptr %s", modrm_string); break; } } else { switch (op2 & 0x3f) { case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07: util::stream_format(stream, "fld st(0),st(%d)", op2 & 0x7); break; case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: util::stream_format(stream, "fxch st(0),st(%d)", op2 & 0x7); break; case 0x10: util::stream_format(stream, "fnop"); break; case 0x20: util::stream_format(stream, "fchs"); break; case 0x21: util::stream_format(stream, "fabs"); break; case 0x24: util::stream_format(stream, "ftst"); break; case 0x25: util::stream_format(stream, "fxam"); break; case 0x28: util::stream_format(stream, "fld1"); break; case 0x29: util::stream_format(stream, "fldl2t"); break; case 0x2a: util::stream_format(stream, "fldl2e"); break; case 0x2b: util::stream_format(stream, "fldpi"); break; case 0x2c: util::stream_format(stream, "fldlg2"); break; case 0x2d: util::stream_format(stream, "fldln2"); break; case 0x2e: util::stream_format(stream, "fldz"); break; case 0x30: util::stream_format(stream, "f2xm1"); break; case 0x31: util::stream_format(stream, "fyl2x"); break; case 0x32: util::stream_format(stream, "fptan"); break; case 0x33: util::stream_format(stream, "fpatan"); break; case 0x34: util::stream_format(stream, "fxtract"); break; case 0x35: util::stream_format(stream, "fprem1"); break; case 0x36: util::stream_format(stream, "fdecstp"); break; case 0x37: util::stream_format(stream, "fincstp"); break; case 0x38: util::stream_format(stream, "fprem"); break; case 0x39: util::stream_format(stream, "fyl2xp1"); break; case 0x3a: util::stream_format(stream, "fsqrt"); break; case 0x3b: util::stream_format(stream, "fsincos"); break; case 0x3c: util::stream_format(stream, "frndint"); break; case 0x3d: util::stream_format(stream, "fscale"); break; case 0x3e: util::stream_format(stream, "fsin"); break; case 0x3f: util::stream_format(stream, "fcos"); break; default: util::stream_format(stream, "??? (FPU)"); break; } } break; } case 2: // Group DA { if (op2 < 0xc0) { pc--; // adjust fetch pointer, so modrm byte read again opcode_ptr--; handle_modrm( modrm_string ); switch ((op2 >> 3) & 0x7) { case 0: util::stream_format(stream, "fiadd dword ptr %s", modrm_string); break; case 1: util::stream_format(stream, "fimul dword ptr %s", modrm_string); break; case 2: util::stream_format(stream, "ficom dword ptr %s", modrm_string); break; case 3: util::stream_format(stream, "ficomp dword ptr %s", modrm_string); break; case 4: util::stream_format(stream, "fisub dword ptr %s", modrm_string); break; case 5: util::stream_format(stream, "fisubr dword ptr %s", modrm_string); break; case 6: util::stream_format(stream, "fidiv dword ptr %s", modrm_string); break; case 7: util::stream_format(stream, "fidivr dword ptr %s", modrm_string); break; } } else { switch (op2 & 0x3f) { case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07: util::stream_format(stream, "fcmovb st(0),st(%d)", op2 & 0x7); break; case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: util::stream_format(stream, "fcmove st(0),st(%d)", op2 & 0x7); break; case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: util::stream_format(stream, "fcmovbe st(0),st(%d)", op2 & 0x7); break; case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: util::stream_format(stream, "fcmovu st(0),st(%d)", op2 & 0x7); break; default: util::stream_format(stream, "??? (FPU)"); break; } } break; } case 3: // Group DB { if (op2 < 0xc0) { pc--; // adjust fetch pointer, so modrm byte read again opcode_ptr--; handle_modrm( modrm_string ); switch ((op2 >> 3) & 0x7) { case 0: util::stream_format(stream, "fild dword ptr %s", modrm_string); break; case 1: util::stream_format(stream, "??? (FPU)"); break; case 2: util::stream_format(stream, "fist dword ptr %s", modrm_string); break; case 3: util::stream_format(stream, "fistp dword ptr %s", modrm_string); break; case 4: util::stream_format(stream, "??? (FPU)"); break; case 5: util::stream_format(stream, "fld tword ptr %s", modrm_string); break; case 6: util::stream_format(stream, "??? (FPU)"); break; case 7: util::stream_format(stream, "fstp tword ptr %s", modrm_string); break; } } else { switch (op2 & 0x3f) { case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07: util::stream_format(stream, "fcmovnb st(0),st(%d)", op2 & 0x7); break; case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: util::stream_format(stream, "fcmovne st(0),st(%d)", op2 & 0x7); break; case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: util::stream_format(stream, "fcmovnbe st(0),st(%d)", op2 & 0x7); break; case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: util::stream_format(stream, "fcmovnu st(0),st(%d)", op2 & 0x7); break; case 0x22: util::stream_format(stream, "fclex"); break; case 0x23: util::stream_format(stream, "finit"); break; case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: util::stream_format(stream, "fucomi st(0),st(%d)", op2 & 0x7); break; case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: util::stream_format(stream, "fcomi st(0),st(%d)", op2 & 0x7); break; default: util::stream_format(stream, "??? (FPU)"); break; } } break; } case 4: // Group DC { if (op2 < 0xc0) { pc--; // adjust fetch pointer, so modrm byte read again opcode_ptr--; handle_modrm( modrm_string ); switch ((op2 >> 3) & 0x7) { case 0: util::stream_format(stream, "fadd qword ptr %s", modrm_string); break; case 1: util::stream_format(stream, "fmul qword ptr %s", modrm_string); break; case 2: util::stream_format(stream, "fcom qword ptr %s", modrm_string); break; case 3: util::stream_format(stream, "fcomp qword ptr %s", modrm_string); break; case 4: util::stream_format(stream, "fsub qword ptr %s", modrm_string); break; case 5: util::stream_format(stream, "fsubr qword ptr %s", modrm_string); break; case 6: util::stream_format(stream, "fdiv qword ptr %s", modrm_string); break; case 7: util::stream_format(stream, "fdivr qword ptr %s", modrm_string); break; } } else { switch (op2 & 0x3f) { case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07: util::stream_format(stream, "fadd st(%d),st(0)", op2 & 0x7); break; case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: util::stream_format(stream, "fmul st(%d),st(0)", op2 & 0x7); break; case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: util::stream_format(stream, "fsubr st(%d),st(0)", op2 & 0x7); break; case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: util::stream_format(stream, "fsub st(%d),st(0)", op2 & 0x7); break; case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: util::stream_format(stream, "fdivr st(%d),st(0)", op2 & 0x7); break; case 0x38: case 0x39: case 0x3a: case 0x3b: case 0x3c: case 0x3d: case 0x3e: case 0x3f: util::stream_format(stream, "fdiv st(%d),st(0)", op2 & 0x7); break; default: util::stream_format(stream, "??? (FPU)"); break; } } break; } case 5: // Group DD { if (op2 < 0xc0) { pc--; // adjust fetch pointer, so modrm byte read again opcode_ptr--; handle_modrm( modrm_string ); switch ((op2 >> 3) & 0x7) { case 0: util::stream_format(stream, "fld qword ptr %s", modrm_string); break; case 1: util::stream_format(stream, "??? (FPU)"); break; case 2: util::stream_format(stream, "fst qword ptr %s", modrm_string); break; case 3: util::stream_format(stream, "fstp qword ptr %s", modrm_string); break; case 4: util::stream_format(stream, "frstor %s", modrm_string); break; case 5: util::stream_format(stream, "??? (FPU)"); break; case 6: util::stream_format(stream, "fsave %s", modrm_string); break; case 7: util::stream_format(stream, "fstsw word ptr %s", modrm_string); break; } } else { switch (op2 & 0x3f) { case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07: util::stream_format(stream, "ffree st(%d)", op2 & 0x7); break; case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: util::stream_format(stream, "fst st(%d)", op2 & 0x7); break; case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: util::stream_format(stream, "fstp st(%d)", op2 & 0x7); break; case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: util::stream_format(stream, "fucom st(%d), st(0)", op2 & 0x7); break; case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: util::stream_format(stream, "fucomp st(%d)", op2 & 0x7); break; default: util::stream_format(stream, "??? (FPU)"); break; } } break; } case 6: // Group DE { if (op2 < 0xc0) { pc--; // adjust fetch pointer, so modrm byte read again opcode_ptr--; handle_modrm( modrm_string ); switch ((op2 >> 3) & 0x7) { case 0: util::stream_format(stream, "fiadd word ptr %s", modrm_string); break; case 1: util::stream_format(stream, "fimul word ptr %s", modrm_string); break; case 2: util::stream_format(stream, "ficom word ptr %s", modrm_string); break; case 3: util::stream_format(stream, "ficomp word ptr %s", modrm_string); break; case 4: util::stream_format(stream, "fisub word ptr %s", modrm_string); break; case 5: util::stream_format(stream, "fisubr word ptr %s", modrm_string); break; case 6: util::stream_format(stream, "fidiv word ptr %s", modrm_string); break; case 7: util::stream_format(stream, "fidivr word ptr %s", modrm_string); break; } } else { switch (op2 & 0x3f) { case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07: util::stream_format(stream, "faddp st(%d)", op2 & 0x7); break; case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: util::stream_format(stream, "fmulp st(%d)", op2 & 0x7); break; case 0x19: util::stream_format(stream, "fcompp"); break; case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: util::stream_format(stream, "fsubrp st(%d)", op2 & 0x7); break; case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: util::stream_format(stream, "fsubp st(%d)", op2 & 0x7); break; case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: util::stream_format(stream, "fdivrp st(%d), st(0)", op2 & 0x7); break; case 0x38: case 0x39: case 0x3a: case 0x3b: case 0x3c: case 0x3d: case 0x3e: case 0x3f: util::stream_format(stream, "fdivp st(%d)", op2 & 0x7); break; default: util::stream_format(stream, "??? (FPU)"); break; } } break; } case 7: // Group DF { if (op2 < 0xc0) { pc--; // adjust fetch pointer, so modrm byte read again opcode_ptr--; handle_modrm( modrm_string ); switch ((op2 >> 3) & 0x7) { case 0: util::stream_format(stream, "fild word ptr %s", modrm_string); break; case 1: util::stream_format(stream, "??? (FPU)"); break; case 2: util::stream_format(stream, "fist word ptr %s", modrm_string); break; case 3: util::stream_format(stream, "fistp word ptr %s", modrm_string); break; case 4: util::stream_format(stream, "fbld %s", modrm_string); break; case 5: util::stream_format(stream, "fild qword ptr %s", modrm_string); break; case 6: util::stream_format(stream, "fbstp %s", modrm_string); break; case 7: util::stream_format(stream, "fistp qword ptr %s", modrm_string); break; } } else { switch (op2 & 0x3f) { case 0x20: util::stream_format(stream, "fstsw aw"); break; case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: util::stream_format(stream, "fucomip st(%d)", op2 & 0x7); break; case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: util::stream_format(stream, "fcomip st(%d),st(0)", op2 & 0x7); break; default: util::stream_format(stream, "??? (FPU)"); break; } } break; } } } static void decode_opcode(std::ostream &stream, const NEC_I386_OPCODE *op, uint8_t op1 ) { int i; uint8_t op2; switch( op->flags ) { case TWO_BYTE: op2 = FETCHD(); decode_opcode( stream, &necv_opcode_table2[op2], op1 ); return; case SEG_PS: case SEG_DS0: case SEG_DS1: case SEG_SS: segment = op->flags; op2 = FETCH(); if (Iconfig) op2 = Iconfig[op2]; decode_opcode( stream, &necv_opcode_table1[op2], op1 ); return; case PREFIX: util::stream_format( stream, "%-8s", op->mnemonic ); op2 = FETCH(); if (Iconfig) op2 = Iconfig[op2]; decode_opcode( stream, &necv_opcode_table1[op2], op1 ); return; case GROUP: handle_modrm( modrm_string ); for( i=0; i < ARRAY_LENGTH(group_op_table); i++ ) { if( strcmp(op->mnemonic, group_op_table[i].mnemonic) == 0 ) { decode_opcode( stream, &group_op_table[i].opcode[MODRM_REG1], op1 ); return; } } goto handle_unknown; case FPU: op2 = FETCHD(); handle_fpu( stream, op1, op2); return; case MODRM: handle_modrm( modrm_string ); break; } util::stream_format( stream, "%-8s", op->mnemonic ); dasm_flags = op->dasm_flags; if( op->param1 != 0 ) { handle_param(stream, op->param1); } if( op->param2 != 0 ) { util::stream_format( stream, "," ); handle_param(stream, op->param2); } if( op->param3 != 0 ) { util::stream_format( stream, "," ); handle_param(stream, op->param3); } return; handle_unknown: util::stream_format(stream, "???"); } int necv_dasm_one(std::ostream &stream, uint32_t eip, const uint8_t *oprom, const uint8_t *decryption_table) { uint8_t op; Iconfig = decryption_table; opcode_ptr = opcode_ptr_base = oprom; pc = eip; dasm_flags = 0; segment = 0; op = FETCH(); if (Iconfig) op = Iconfig[op]; decode_opcode( stream, &necv_opcode_table1[op], op ); return (pc-eip) | dasm_flags | DASMFLAG_SUPPORTED; } int necv_dasm_one(char *buffer, uint32_t eip, const uint8_t *oprom, const uint8_t *decryption_table) { std::ostringstream stream; int result = necv_dasm_one(stream, eip, oprom, decryption_table); std::string stream_str = stream.str(); strcpy(buffer, stream_str.c_str()); return result; } CPU_DISASSEMBLE( nec ) { return necv_dasm_one(buffer, pc, oprom, nullptr); }