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Diffstat (limited to 'src/devices/cpu/nec/necdasm.c')
-rw-r--r-- | src/devices/cpu/nec/necdasm.c | 1603 |
1 files changed, 1603 insertions, 0 deletions
diff --git a/src/devices/cpu/nec/necdasm.c b/src/devices/cpu/nec/necdasm.c new file mode 100644 index 00000000000..726ada18247 --- /dev/null +++ b/src/devices/cpu/nec/necdasm.c @@ -0,0 +1,1603 @@ +// 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" + +static const UINT8 *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 flags; + UINT32 param1; + UINT32 param2; + UINT32 param3; + offs_t dasm_flags; +}; + +struct NEC_GROUP_OP { + char mnemonic[32]; + const NEC_I386_OPCODE *opcode; +}; + +static const UINT8 *opcode_ptr; +static const UINT8 *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 pc; +static UINT8 modrm; +static UINT32 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 + +INLINE UINT8 FETCH(void) +{ + if ((opcode_ptr - opcode_ptr_base) + 1 > MAX_LENGTH) + return 0xff; + pc++; + return *opcode_ptr++; +} + +#if 0 +INLINE UINT16 FETCH16(void) +{ + UINT16 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 + +INLINE UINT8 FETCHD(void) +{ + if ((opcode_ptr - opcode_ptr_base) + 1 > MAX_LENGTH) + return 0xff; + pc++; + return *opcode_ptr++; +} + +INLINE UINT16 FETCHD16(void) +{ + UINT16 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 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 value, int digits, int 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 disp8; + INT16 disp16; + UINT8 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) 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)disp8, 0, TRUE) ); + } else if( mod == 2 ) { + disp16 = FETCHD16(); + s += sprintf( s, "%s", shexstring((INT32)disp16, 0, TRUE) ); + } + s += sprintf( s, "]" ); +} + +static char* handle_param(char* s, UINT32 param) +{ + UINT8 i8; + UINT16 i16; + UINT16 ptr; + UINT32 addr; + INT8 d8; + INT16 d16; + + switch(param) + { + case PARAM_REG8: + s += sprintf( s, "%s", nec_reg8[MODRM_REG1] ); + break; + + case PARAM_REG16: + s += sprintf( s, "%s", nec_reg[MODRM_REG1] ); + break; + + case PARAM_REG2_8: + s += sprintf( s, "%s", nec_reg8[MODRM_REG2] ); + break; + + case PARAM_REG2_16: + s += sprintf( s, "%s", nec_reg[MODRM_REG2] ); + break; + + case PARAM_RM8: + case PARAM_RMPTR8: + if( modrm >= 0xc0 ) { + s += sprintf( s, "%s", nec_reg8[MODRM_REG2] ); + } else { + if (param == PARAM_RMPTR8) + s += sprintf( s, "byte ptr " ); + s += sprintf( s, "%s", modrm_string ); + } + break; + + case PARAM_RM16: + case PARAM_RMPTR16: + if( modrm >= 0xc0 ) { + s += sprintf( s, "%s", nec_reg[MODRM_REG2] ); + } else { + if (param == PARAM_RMPTR16) + s += sprintf( s, "word ptr " ); + s += sprintf( s, "%s", modrm_string ); + } + break; + + case PARAM_I3: + i8 = FETCHD(); + s += sprintf( s, "%d", i8 & 0x07 ); + break; + + case PARAM_I4: + i8 = FETCHD(); + s += sprintf( s, "%d", i8 & 0x0f ); + break; + + case PARAM_I8: + i8 = FETCHD(); + s += sprintf( s, "%s", shexstring((INT8)i8, 0, FALSE) ); + break; + + case PARAM_I16: + i16 = FETCHD16(); + s += sprintf( s, "%s", shexstring((INT16)i16, 0, FALSE) ); + break; + + case PARAM_UI8: + i8 = FETCHD(); + s += sprintf( s, "%s", shexstring((UINT8)i8, 0, FALSE) ); + break; + + case PARAM_IMM: + i16 = FETCHD16(); + s += sprintf( s, "%s", hexstring(i16, 0) ); + break; + + case PARAM_ADDR: + addr = FETCHD16(); + ptr = FETCHD16(); + s += sprintf( s, "%s:", hexstring(ptr, 4) ); + s += sprintf( s, "%s", hexstring(addr, 0) ); + break; + + case PARAM_REL16: + /* make sure to keep the relative offset within the segment */ + d16 = FETCHD16(); + s += sprintf( s, "%s", hexstring((pc & 0xFFFF0000) | ((pc + d16) & 0x0000FFFF), 0) ); + break; + + case PARAM_REL8: + d8 = FETCHD(); + s += sprintf( s, "%s", hexstring(pc + d8, 0) ); + break; + + case PARAM_MEM_OFFS: + 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; + } + + i16 = FETCHD16(); + s += sprintf( s, "[%s]", hexstring(i16, 0) ); + break; + + case PARAM_SREG: + s += sprintf( s, "%s", nec_sreg[MODRM_REG1] ); + break; + + case PARAM_SFREG: + i8 = FETCHD(); + s += sprintf( s, "%s", nec_sfreg[i8] ); + break; + + case PARAM_1: + s += sprintf( s, "1" ); + break; + + case PARAM_AL: s += sprintf( s, "al" ); break; + case PARAM_CL: s += sprintf( s, "cl" ); break; + case PARAM_DL: s += sprintf( s, "dl" ); break; + case PARAM_BL: s += sprintf( s, "bl" ); break; + case PARAM_AH: s += sprintf( s, "ah" ); break; + case PARAM_CH: s += sprintf( s, "ch" ); break; + case PARAM_DH: s += sprintf( s, "dh" ); break; + case PARAM_BH: s += sprintf( s, "bh" ); break; + + case PARAM_AW: s += sprintf( s, "aw" ); break; + case PARAM_CW: s += sprintf( s, "cw" ); break; + case PARAM_DW: s += sprintf( s, "dw" ); break; + case PARAM_BW: s += sprintf( s, "bw" ); break; + case PARAM_SP: s += sprintf( s, "sp" ); break; + case PARAM_BP: s += sprintf( s, "bp" ); break; + case PARAM_IX: s += sprintf( s, "ix" ); break; + case PARAM_IY: s += sprintf( s, "iy" ); break; + } + return s; +} + +static void handle_fpu(char *s, UINT8 op1, UINT8 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: sprintf(s, "fadd dword ptr %s", modrm_string); break; + case 1: sprintf(s, "fmul dword ptr %s", modrm_string); break; + case 2: sprintf(s, "fcom dword ptr %s", modrm_string); break; + case 3: sprintf(s, "fcomp dword ptr %s", modrm_string); break; + case 4: sprintf(s, "fsub dword ptr %s", modrm_string); break; + case 5: sprintf(s, "fsubr dword ptr %s", modrm_string); break; + case 6: sprintf(s, "fdiv dword ptr %s", modrm_string); break; + case 7: sprintf(s, "fdivr dword ptr %s", modrm_string); break; + } + } + else + { + switch ((op2 >> 3) & 0x7) + { + case 0: sprintf(s, "fadd st(0),st(%d)", op2 & 0x7); break; + case 1: sprintf(s, "fcom st(0),st(%d)", op2 & 0x7); break; + case 2: sprintf(s, "fsub st(0),st(%d)", op2 & 0x7); break; + case 3: sprintf(s, "fdiv st(0),st(%d)", op2 & 0x7); break; + case 4: sprintf(s, "fmul st(0),st(%d)", op2 & 0x7); break; + case 5: sprintf(s, "fcomp st(0),st(%d)", op2 & 0x7); break; + case 6: sprintf(s, "fsubr st(0),st(%d)", op2 & 0x7); break; + case 7: sprintf(s, "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: sprintf(s, "fld dword ptr %s", modrm_string); break; + case 1: sprintf(s, "??? (FPU)"); break; + case 2: sprintf(s, "fst dword ptr %s", modrm_string); break; + case 3: sprintf(s, "fstp dword ptr %s", modrm_string); break; + case 4: sprintf(s, "fldenv word ptr %s", modrm_string); break; + case 5: sprintf(s, "fldcw word ptr %s", modrm_string); break; + case 6: sprintf(s, "fstenv word ptr %s", modrm_string); break; + case 7: sprintf(s, "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: + sprintf(s, "fld st(0),st(%d)", op2 & 0x7); break; + + case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: + sprintf(s, "fxch st(0),st(%d)", op2 & 0x7); break; + + case 0x10: sprintf(s, "fnop"); break; + case 0x20: sprintf(s, "fchs"); break; + case 0x21: sprintf(s, "fabs"); break; + case 0x24: sprintf(s, "ftst"); break; + case 0x25: sprintf(s, "fxam"); break; + case 0x28: sprintf(s, "fld1"); break; + case 0x29: sprintf(s, "fldl2t"); break; + case 0x2a: sprintf(s, "fldl2e"); break; + case 0x2b: sprintf(s, "fldpi"); break; + case 0x2c: sprintf(s, "fldlg2"); break; + case 0x2d: sprintf(s, "fldln2"); break; + case 0x2e: sprintf(s, "fldz"); break; + case 0x30: sprintf(s, "f2xm1"); break; + case 0x31: sprintf(s, "fyl2x"); break; + case 0x32: sprintf(s, "fptan"); break; + case 0x33: sprintf(s, "fpatan"); break; + case 0x34: sprintf(s, "fxtract"); break; + case 0x35: sprintf(s, "fprem1"); break; + case 0x36: sprintf(s, "fdecstp"); break; + case 0x37: sprintf(s, "fincstp"); break; + case 0x38: sprintf(s, "fprem"); break; + case 0x39: sprintf(s, "fyl2xp1"); break; + case 0x3a: sprintf(s, "fsqrt"); break; + case 0x3b: sprintf(s, "fsincos"); break; + case 0x3c: sprintf(s, "frndint"); break; + case 0x3d: sprintf(s, "fscale"); break; + case 0x3e: sprintf(s, "fsin"); break; + case 0x3f: sprintf(s, "fcos"); break; + + default: sprintf(s, "??? (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: sprintf(s, "fiadd dword ptr %s", modrm_string); break; + case 1: sprintf(s, "fimul dword ptr %s", modrm_string); break; + case 2: sprintf(s, "ficom dword ptr %s", modrm_string); break; + case 3: sprintf(s, "ficomp dword ptr %s", modrm_string); break; + case 4: sprintf(s, "fisub dword ptr %s", modrm_string); break; + case 5: sprintf(s, "fisubr dword ptr %s", modrm_string); break; + case 6: sprintf(s, "fidiv dword ptr %s", modrm_string); break; + case 7: sprintf(s, "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: + sprintf(s, "fcmovb st(0),st(%d)", op2 & 0x7); break; + + case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: + sprintf(s, "fcmove st(0),st(%d)", op2 & 0x7); break; + + case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: + sprintf(s, "fcmovbe st(0),st(%d)", op2 & 0x7); break; + + case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: + sprintf(s, "fcmovu st(0),st(%d)", op2 & 0x7); break; + + default: sprintf(s, "??? (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: sprintf(s, "fild dword ptr %s", modrm_string); break; + case 1: sprintf(s, "??? (FPU)"); break; + case 2: sprintf(s, "fist dword ptr %s", modrm_string); break; + case 3: sprintf(s, "fistp dword ptr %s", modrm_string); break; + case 4: sprintf(s, "??? (FPU)"); break; + case 5: sprintf(s, "fld tword ptr %s", modrm_string); break; + case 6: sprintf(s, "??? (FPU)"); break; + case 7: sprintf(s, "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: + sprintf(s, "fcmovnb st(0),st(%d)", op2 & 0x7); break; + + case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: + sprintf(s, "fcmovne st(0),st(%d)", op2 & 0x7); break; + + case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: + sprintf(s, "fcmovnbe st(0),st(%d)", op2 & 0x7); break; + + case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: + sprintf(s, "fcmovnu st(0),st(%d)", op2 & 0x7); break; + + case 0x22: sprintf(s, "fclex"); break; + case 0x23: sprintf(s, "finit"); break; + + case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: + sprintf(s, "fucomi st(0),st(%d)", op2 & 0x7); break; + + case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: + sprintf(s, "fcomi st(0),st(%d)", op2 & 0x7); break; + + default: sprintf(s, "??? (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: sprintf(s, "fadd qword ptr %s", modrm_string); break; + case 1: sprintf(s, "fmul qword ptr %s", modrm_string); break; + case 2: sprintf(s, "fcom qword ptr %s", modrm_string); break; + case 3: sprintf(s, "fcomp qword ptr %s", modrm_string); break; + case 4: sprintf(s, "fsub qword ptr %s", modrm_string); break; + case 5: sprintf(s, "fsubr qword ptr %s", modrm_string); break; + case 6: sprintf(s, "fdiv qword ptr %s", modrm_string); break; + case 7: sprintf(s, "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: + sprintf(s, "fadd st(%d),st(0)", op2 & 0x7); break; + + case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: + sprintf(s, "fmul st(%d),st(0)", op2 & 0x7); break; + + case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: + sprintf(s, "fsubr st(%d),st(0)", op2 & 0x7); break; + + case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: + sprintf(s, "fsub st(%d),st(0)", op2 & 0x7); break; + + case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: + sprintf(s, "fdivr st(%d),st(0)", op2 & 0x7); break; + + case 0x38: case 0x39: case 0x3a: case 0x3b: case 0x3c: case 0x3d: case 0x3e: case 0x3f: + sprintf(s, "fdiv st(%d),st(0)", op2 & 0x7); break; + + default: sprintf(s, "??? (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: sprintf(s, "fld qword ptr %s", modrm_string); break; + case 1: sprintf(s, "??? (FPU)"); break; + case 2: sprintf(s, "fst qword ptr %s", modrm_string); break; + case 3: sprintf(s, "fstp qword ptr %s", modrm_string); break; + case 4: sprintf(s, "frstor %s", modrm_string); break; + case 5: sprintf(s, "??? (FPU)"); break; + case 6: sprintf(s, "fsave %s", modrm_string); break; + case 7: sprintf(s, "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: + sprintf(s, "ffree st(%d)", op2 & 0x7); break; + + case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: + sprintf(s, "fst st(%d)", op2 & 0x7); break; + + case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: + sprintf(s, "fstp st(%d)", op2 & 0x7); break; + + case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: + sprintf(s, "fucom st(%d), st(0)", op2 & 0x7); break; + + case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: + sprintf(s, "fucomp st(%d)", op2 & 0x7); break; + + default: sprintf(s, "??? (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: sprintf(s, "fiadd word ptr %s", modrm_string); break; + case 1: sprintf(s, "fimul word ptr %s", modrm_string); break; + case 2: sprintf(s, "ficom word ptr %s", modrm_string); break; + case 3: sprintf(s, "ficomp word ptr %s", modrm_string); break; + case 4: sprintf(s, "fisub word ptr %s", modrm_string); break; + case 5: sprintf(s, "fisubr word ptr %s", modrm_string); break; + case 6: sprintf(s, "fidiv word ptr %s", modrm_string); break; + case 7: sprintf(s, "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: + sprintf(s, "faddp st(%d)", op2 & 0x7); break; + + case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f: + sprintf(s, "fmulp st(%d)", op2 & 0x7); break; + + case 0x19: sprintf(s, "fcompp"); break; + + case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: + sprintf(s, "fsubrp st(%d)", op2 & 0x7); break; + + case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: + sprintf(s, "fsubp st(%d)", op2 & 0x7); break; + + case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: + sprintf(s, "fdivrp st(%d), st(0)", op2 & 0x7); break; + + case 0x38: case 0x39: case 0x3a: case 0x3b: case 0x3c: case 0x3d: case 0x3e: case 0x3f: + sprintf(s, "fdivp st(%d)", op2 & 0x7); break; + + default: sprintf(s, "??? (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: sprintf(s, "fild word ptr %s", modrm_string); break; + case 1: sprintf(s, "??? (FPU)"); break; + case 2: sprintf(s, "fist word ptr %s", modrm_string); break; + case 3: sprintf(s, "fistp word ptr %s", modrm_string); break; + case 4: sprintf(s, "fbld %s", modrm_string); break; + case 5: sprintf(s, "fild qword ptr %s", modrm_string); break; + case 6: sprintf(s, "fbstp %s", modrm_string); break; + case 7: sprintf(s, "fistp qword ptr %s", modrm_string); break; + } + } + else + { + switch (op2 & 0x3f) + { + case 0x20: sprintf(s, "fstsw aw"); break; + + case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: + sprintf(s, "fucomip st(%d)", op2 & 0x7); break; + + case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: + sprintf(s, "fcomip st(%d),st(0)", op2 & 0x7); break; + + default: sprintf(s, "??? (FPU)"); break; + } + } + break; + } + } +} + +static void decode_opcode(char *s, const NEC_I386_OPCODE *op, UINT8 op1 ) +{ + int i; + UINT8 op2; + + switch( op->flags ) + { + case TWO_BYTE: + op2 = FETCHD(); + decode_opcode( s, &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( s, &necv_opcode_table1[op2], op1 ); + return; + + case PREFIX: + s += sprintf( s, "%-8s", op->mnemonic ); + op2 = FETCH(); + if (Iconfig) op2 = Iconfig[op2]; + decode_opcode( s, &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( s, &group_op_table[i].opcode[MODRM_REG1], op1 ); + return; + } + } + goto handle_unknown; + + case FPU: + op2 = FETCHD(); + handle_fpu( s, op1, op2); + return; + + case MODRM: + handle_modrm( modrm_string ); + break; + } + + s += sprintf( s, "%-8s", op->mnemonic ); + dasm_flags = op->dasm_flags; + + if( op->param1 != 0 ) { + s = handle_param( s, op->param1 ); + } + + if( op->param2 != 0 ) { + s += sprintf( s, "," ); + s = handle_param( s, op->param2 ); + } + + if( op->param3 != 0 ) { + s += sprintf( s, "," ); + s = handle_param( s, op->param3 ); + } + return; + +handle_unknown: + sprintf(s, "???"); +} + +int necv_dasm_one(char *buffer, UINT32 eip, const UINT8 *oprom, const UINT8 *decryption_table) +{ + UINT8 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( buffer, &necv_opcode_table1[op], op ); + return (pc-eip) | dasm_flags | DASMFLAG_SUPPORTED; +} + +CPU_DISASSEMBLE( nec ) +{ + return necv_dasm_one(buffer, pc, oprom, NULL); +} |