diff options
Diffstat (limited to 'src/devices/cpu/ns32000/ns32000dasm.cpp')
-rw-r--r-- | src/devices/cpu/ns32000/ns32000dasm.cpp | 589 |
1 files changed, 0 insertions, 589 deletions
diff --git a/src/devices/cpu/ns32000/ns32000dasm.cpp b/src/devices/cpu/ns32000/ns32000dasm.cpp deleted file mode 100644 index 9676329157f..00000000000 --- a/src/devices/cpu/ns32000/ns32000dasm.cpp +++ /dev/null @@ -1,589 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Patrick Mackinlay - -#include "emu.h" - -#include "ns32000dasm.h" - -char const *const cond_code[] = { "EQ", "NE", "CS", "CC", "HI", "LS", "GT", "LE", "FS", "FC", "LO", "HS", "LT", "GE", "R", "N" }; -char const size_char[] = { 'B','W',' ','D' }; - -s32 ns32000_disassembler::displacement(offs_t pc, data_buffer const &opcodes, unsigned &bytes) -{ - u32 const byte0 = opcodes.r8(pc + bytes++); - - if (BIT(byte0, 7)) - { - if (BIT(byte0, 6)) - { - // double word displacement - u32 const byte1 = opcodes.r8(pc + bytes++); - u32 const byte2 = opcodes.r8(pc + bytes++); - u32 const byte3 = opcodes.r8(pc + bytes++); - - return (s32((byte0 << 24) | (byte1 << 16) | (byte2 << 8) | byte3) << 2) >> 2; - } - else - { - // word displacement - u8 const byte1 = opcodes.r8(pc + bytes++); - - return s16(((byte0 << 8) | byte1) << 2) >> 2; - } - } - else - // byte displacement - return s8(byte0 << 1) >> 1; -} - -void ns32000_disassembler::decode(addr_mode *mode, offs_t pc, data_buffer const &opcodes, unsigned &bytes) -{ - char const scale_size[] = { 'B', 'W', 'D', 'Q' }; - std::string scale[2]; - - // scaled mode - for (unsigned i = 0; i < 2; i++) - { - if (mode[i].gen > 0x1b) - { - u8 const index = opcodes.r8(pc + bytes++); - - scale[i] = util::string_format("[R%d:%c]", index & 7, scale_size[mode[i].gen & 3]); - mode[i].gen = index >> 3; - } - } - - // base mode - for (unsigned i = 0; i < 2; i++) - { - switch (mode[i].gen) - { - case 0x00: case 0x01: case 0x02: case 0x03: - case 0x04: case 0x05: case 0x06: case 0x07: - // register - mode[i].mode = util::string_format("%c%d", mode[i].fpu ? 'F' : 'R', mode[i].gen); - break; - case 0x08: case 0x09: case 0x0a: case 0x0b: - case 0x0c: case 0x0d: case 0x0e: case 0x0f: - // register relative - mode[i].mode = util::string_format("%d(R%d)", displacement(pc, opcodes, bytes), mode[i].gen & 7); - break; - case 0x10: - // frame memory relative disp2(disp1(FP)) - { - s32 const disp1 = displacement(pc, opcodes, bytes); - s32 const disp2 = displacement(pc, opcodes, bytes); - mode[i].mode = util::string_format("%d(%d(FP))", disp2, disp1); - } - break; - case 0x11: - // stack memory relative disp2(disp1(SP)) - { - s32 const disp1 = displacement(pc, opcodes, bytes); - s32 const disp2 = displacement(pc, opcodes, bytes); - mode[i].mode = util::string_format("%d(%d(SP))", disp2, disp1); - } - break; - case 0x12: - // static memory relative disp2(disp1(SB)) - { - s32 const disp1 = displacement(pc, opcodes, bytes); - s32 const disp2 = displacement(pc, opcodes, bytes); - mode[i].mode = util::string_format("%d(%d(SB))", disp2, disp1); - } - break; - case 0x13: - // reserved - break; - case 0x14: - // immediate - switch (mode[i].size) - { - case SIZE_B: mode[i].mode = util::string_format("0x%X", opcodes.r8(pc + bytes)); bytes += 1; break; - case SIZE_W: mode[i].mode = util::string_format("0x%X", swapendian_int16(opcodes.r16(pc + bytes))); bytes += 2; break; - case SIZE_D: mode[i].mode = util::string_format("0x%X", swapendian_int32(opcodes.r32(pc + bytes))); bytes += 4; break; - case SIZE_Q: mode[i].mode = util::string_format("0x%X", swapendian_int64(opcodes.r64(pc + bytes))); bytes += 8; break; - } - break; - case 0x15: - // absolute @disp - mode[i].mode = util::string_format("@0x%X", displacement(pc, opcodes, bytes)); - break; - case 0x16: - // external EXT(disp1) + disp2 - { - s32 const disp1 = displacement(pc, opcodes, bytes); - s32 const disp2 = displacement(pc, opcodes, bytes); - if (disp2 < 0) - mode[i].mode = util::string_format("EXT(%d) - %d", disp1, -disp2); - else if (disp2 > 0) - mode[i].mode = util::string_format("EXT(%d) + %d", disp1, disp2); - else - mode[i].mode = util::string_format("EXT(%d)", disp1); - } - break; - case 0x17: - // top of stack TOS - mode[i].mode = "TOS"; - break; - case 0x18: - // frame memory disp(FP) - mode[i].mode = util::string_format("%d(FP)", displacement(pc, opcodes, bytes)); - break; - case 0x19: - // stack memory disp(SP) - mode[i].mode = util::string_format("%d(SP)", displacement(pc, opcodes, bytes)); - break; - case 0x1a: - // static memory disp(SB) - mode[i].mode = util::string_format("%d(SB)", displacement(pc, opcodes, bytes)); - break; - case 0x1b: - // program memory *+disp - mode[i].mode = util::string_format("0x%X", pc + displacement(pc, opcodes, bytes)); - break; - } - - if (!scale[i].empty()) - mode[i].mode.append(scale[i]); - } -} - -std::string ns32000_disassembler::reglist(u8 imm) -{ - std::string result; - - for (unsigned i = 0; i < 8; i++) - if (BIT(imm, i)) - { - if (result.empty()) - result.append(util::string_format("R%d", i)); - else - result.append(util::string_format(",R%d", i)); - } - - return result; -} - -offs_t ns32000_disassembler::disassemble(std::ostream &stream, offs_t pc, data_buffer const &opcodes, data_buffer const ¶ms) -{ - uint32_t flags = SUPPORTED; - unsigned bytes = 0; - - u8 const opbyte = opcodes.r8(pc + bytes++); - - if ((opbyte & 15) == 10) - { - // format 0: cccc 1010 - util::stream_format(stream, "B%-2s 0x%X", cond_code[BIT(opbyte, 4, 4)], pc + displacement(pc, opcodes, bytes)); - } - else if ((opbyte & 15) == 2) - { - // format 1: oooo 0010 - - // reglist immediate for save/restore/enter/exit - u8 const imm = (BIT(opbyte, 4, 4) >= 6 && BIT(opbyte, 4, 4) <= 9) ? - opcodes.r8(pc + bytes++) : 0; - - switch (BIT(opbyte, 4, 4)) - { - case 0x0: util::stream_format(stream, "BSR 0x%X", pc + displacement(pc, opcodes, bytes)); flags |= STEP_OVER; break; - case 0x1: util::stream_format(stream, "RET %d", displacement(pc, opcodes, bytes)); flags |= STEP_OUT; break; - case 0x2: util::stream_format(stream, "CXP %d", displacement(pc, opcodes, bytes)); flags |= STEP_OVER; break; - case 0x3: util::stream_format(stream, "RXP %d", displacement(pc, opcodes, bytes)); flags |= STEP_OUT; break; - case 0x4: util::stream_format(stream, "RETT %d", displacement(pc, opcodes, bytes)); flags |= STEP_OUT; break; - case 0x5: util::stream_format(stream, "RETI"); flags |= STEP_OUT; break; - case 0x6: util::stream_format(stream, "SAVE [%s]", reglist(imm)); break; - case 0x7: util::stream_format(stream, "RESTORE [%s]", reglist(bitswap(imm, 0, 1, 2, 3, 4, 5, 6, 7))); break; - case 0x8: util::stream_format(stream, "ENTER [%s], %d", reglist(imm), displacement(pc, opcodes, bytes)); break; - case 0x9: util::stream_format(stream, "EXIT [%s]", reglist(bitswap(imm, 0, 1, 2, 3, 4, 5, 6, 7))); break; - case 0xa: util::stream_format(stream, "NOP"); break; - case 0xb: util::stream_format(stream, "WAIT"); break; - case 0xc: util::stream_format(stream, "DIA"); break; - case 0xd: util::stream_format(stream, "FLAG"); break; - case 0xe: util::stream_format(stream, "SVC"); break; - case 0xf: util::stream_format(stream, "BPT"); break; - } - } - else if ((opbyte & 15) == 12 || (opbyte & 15) == 13 || (opbyte & 15) == 15) - { - // format 2: gggg gsss sooo 11ii - u16 const opword = (u16(opcodes.r8(pc + bytes++)) << 8) | opbyte; - - // HACK: use reserved mode for second unused type - addr_mode mode[] = { addr_mode(BIT(opword, 11, 5)), addr_mode(0x13) }; - - unsigned const quick = BIT(opword, 7, 4); - size_code const size = size_code(opbyte & 3); - - char const *const procreg[] = { "UPSR", "DCR", "BPC", "DSR", "CAR", "", "", "", "FP", "SP", "SB", "USP", "CFG", "PSR", "INTBASE", "MOD" }; - - mode[0].size_i(size); - decode(mode, pc, opcodes, bytes); - - switch (BIT(opbyte, 4, 3)) - { - case 0: util::stream_format(stream, "ADDQ%c %d, %s", size_char[size], s32(quick << 28) >> 28, mode[0].mode); break; - case 1: util::stream_format(stream, "CMPQ%c %d, %s", size_char[size], s32(quick << 28) >> 28, mode[0].mode); break; - case 2: util::stream_format(stream, "SPR%c %s, %s", size_char[size], procreg[quick], mode[0].mode); break; - case 3: util::stream_format(stream, "S%s%c %s", cond_code[quick], size_char[size], mode[0].mode); break; - case 4: util::stream_format(stream, "ACB%c %d, %s, 0x%X", size_char[size], s32(quick << 28) >> 28, mode[0].mode, pc + displacement(pc, opcodes, bytes)); break; - case 5: util::stream_format(stream, "MOVQ%c %d, %s", size_char[size], s32(quick << 28) >> 28, mode[0].mode); break; - case 6: util::stream_format(stream, "LPR%c %s, %s", size_char[size], procreg[quick], mode[0].mode); break; - case 7: - // format 3: gggg gooo o111 11ii - switch (BIT(opword, 7, 4)) - { - case 0x0: util::stream_format(stream, "CXPD %s", mode[0].mode); flags |= STEP_OVER; break; - case 0x2: util::stream_format(stream, "BICPSR%c %s", size_char[size], mode[0].mode); break; - case 0x4: util::stream_format(stream, "JUMP %s", mode[0].mode); break; - case 0x6: util::stream_format(stream, "BISPSR%c %s", size_char[size], mode[0].mode); break; - case 0xa: util::stream_format(stream, "ADJSP%c %s", size_char[size], mode[0].mode); break; - case 0xc: util::stream_format(stream, "JUMP %s", mode[0].mode); flags |= STEP_OVER; break; - case 0xe: util::stream_format(stream, "CASE%c %s", size_char[size], mode[0].mode); break; - default: bytes = 1; break; - } - break; - } - } - else if ((opbyte & 3) != 2) - { - // format 4: xxxx xyyy yyoo ooii - u16 const opword = (u16(opcodes.r8(pc + bytes++)) << 8) | opbyte; - - addr_mode mode[] = { addr_mode(BIT(opword, 11, 5)), addr_mode(BIT(opword, 6, 5)) }; - size_code const size = size_code(opbyte & 3); - - mode[0].size_i(size); - mode[1].size_i(size); - decode(mode, pc, opcodes, bytes); - - switch (BIT(opbyte, 2, 4)) - { - case 0x0: util::stream_format(stream, "ADD%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x1: util::stream_format(stream, "CMP%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x2: util::stream_format(stream, "BIC%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x4: util::stream_format(stream, "ADDC%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x5: util::stream_format(stream, "MOV%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x6: util::stream_format(stream, "OR%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x8: util::stream_format(stream, "SUB%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x9: util::stream_format(stream, "ADDR %s, %s", mode[0].mode, mode[1].mode); break; - case 0xa: util::stream_format(stream, "AND%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xc: util::stream_format(stream, "SUBC%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xd: util::stream_format(stream, "TBIT%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xe: util::stream_format(stream, "XOR%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - default: bytes = 1; break; - } - } - else switch (opbyte) - { - case 0x0e: - // format 5: 0000 0sss s0oo ooii 0000 1110 - { - u16 const opword = opcodes.r16(pc + bytes); bytes += 2; - - char const *const options[] = { "", "B", "W", "W,B", "", "", "U", "U,B" }; - char const *const config[] = { "", "I", "F", "F,I", "M", "M,I", "M,F", "M,F,I", "C", "C,I", "C,F", "C,F,I", "C,M", "C,M,I", "C,M,F", "C,M,F,I" }; - - size_code const size = size_code(opword & 3); - - switch (BIT(opword, 2, 4)) - { - case 0: - if (BIT(opword, 7)) - util::stream_format(stream, "MOVST%c %s", size_char[size], options[BIT(opword, 8, 3)]); - else - util::stream_format(stream, "MOVS%c %s", size_char[size], options[BIT(opword, 8, 3)]); - break; - case 1: - if (BIT(opword, 7)) - util::stream_format(stream, "CMPST%c %s", size_char[size], options[BIT(opword, 8, 3)]); - else - util::stream_format(stream, "CMPS%c %s", size_char[size], options[BIT(opword, 8, 3)]); - break; - case 2: util::stream_format(stream, "SETCFG [%s]", config[BIT(opword, 7, 4)]); break; - case 3: - if (BIT(opword, 7)) - util::stream_format(stream, "SKPST%c %s", size_char[size], options[BIT(opword, 8, 3)]); - else - util::stream_format(stream, "SKPS%c %s", size_char[size], options[BIT(opword, 8, 3)]); - break; - default: bytes = 1; break; - } - } - break; - case 0x4e: - // format 6: xxxx xyyy yyoo ooii 0100 1110 - { - u16 const opword = opcodes.r16(pc + bytes); bytes += 2; - - addr_mode mode[] = { addr_mode(BIT(opword, 11, 5)), addr_mode(BIT(opword, 6, 5)) }; - size_code const size = size_code(opword & 3); - - switch (BIT(opword, 2, 4)) - { - case 0: case 1: case 5: - mode[0].size_i(SIZE_B); - break; - default: - mode[0].size_i(size); - break; - } - mode[1].size_i(size); - decode(mode, pc, opcodes, bytes); - - switch (BIT(opword, 2, 4)) - { - case 0x0: util::stream_format(stream, "ROT%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x1: util::stream_format(stream, "ASH%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x2: util::stream_format(stream, "CBIT%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x3: util::stream_format(stream, "CBITI%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x5: util::stream_format(stream, "LSH%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x6: util::stream_format(stream, "SBIT%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x7: util::stream_format(stream, "SBITI%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x8: util::stream_format(stream, "NEG%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x9: util::stream_format(stream, "NOT%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xb: util::stream_format(stream, "SUBP%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xc: util::stream_format(stream, "ABS%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xd: util::stream_format(stream, "COM%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xe: util::stream_format(stream, "IBIT%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xf: util::stream_format(stream, "ADDP%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - default: bytes = 1; break; - } - } - break; - case 0xce: - // format 7: xxxx xyyy yyoo ooii 1100 1110 - { - u16 const opword = opcodes.r16(pc + bytes); bytes += 2; - - addr_mode mode[] = { addr_mode(BIT(opword, 11, 5)), addr_mode(BIT(opword, 6, 5)) }; - size_code const size = size_code(opword & 3); - - mode[0].size_i(size); - mode[1].size_i(size); - decode(mode, pc, opcodes, bytes); - - u8 const imm = (BIT(opword, 2, 4) == 2 || BIT(opword, 2, 4) == 3) ? opcodes.r8(pc + bytes++) : 0; - - switch (BIT(opword, 2, 4)) - { - case 0x0: util::stream_format(stream, "MOVM%c %s, %s, %d", size_char[size], mode[0].mode, mode[1].mode, displacement(pc, opcodes, bytes) / (size + 1) + 1); break; - case 0x1: util::stream_format(stream, "CMPM%c %s, %s, %d", size_char[size], mode[0].mode, mode[1].mode, displacement(pc, opcodes, bytes) / (size + 1) + 1); break; - case 0x2: util::stream_format(stream, "INSS%c %s, %s, %d", size_char[size], mode[0].mode, mode[1].mode, imm >> 5, imm & 31); break; - case 0x3: util::stream_format(stream, "EXTS%c %s, %s, %d", size_char[size], mode[0].mode, mode[1].mode, imm >> 5, imm & 31); break; - case 0x4: util::stream_format(stream, "MOVXBW %s, %s", mode[0].mode, mode[1].mode); break; - case 0x5: util::stream_format(stream, "MOVZBW %s, %s", mode[0].mode, mode[1].mode); break; - case 0x6: util::stream_format(stream, "MOVZ%cD %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x7: util::stream_format(stream, "MOVX%cD %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x8: util::stream_format(stream, "MUL%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0x9: util::stream_format(stream, "MEI%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xb: util::stream_format(stream, "DEI%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xc: util::stream_format(stream, "QUO%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xd: util::stream_format(stream, "REM%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xe: util::stream_format(stream, "MOD%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 0xf: util::stream_format(stream, "DIV%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - default: bytes = 1; break; - } - } - break; - case 0x2e: - case 0x6e: - case 0xae: - case 0xee: - // format 8: xxxx xyyy yyrr roii oo10 1110 - { - u16 const opword = opcodes.r16(pc + bytes); bytes += 2; - - addr_mode mode[] = { addr_mode(BIT(opword, 11, 5)), addr_mode(BIT(opword, 6, 5)) }; - unsigned const reg = BIT(opword, 3, 3); - size_code const size = size_code(opword & 3); - - mode[0].size_i(size); - mode[1].size_i(size); - decode(mode, pc, opcodes, bytes); - - switch ((opword & 4) | BIT(opbyte, 6, 2)) - { - case 0: util::stream_format(stream, "EXT%c R%d, %s, %s, %d", size_char[size], reg, mode[0].mode, mode[1].mode, displacement(pc, opcodes, bytes)); break; - case 1: util::stream_format(stream, "CVTP R%d, %s, %s", reg, mode[0].mode, mode[1].mode); break; - case 2: util::stream_format(stream, "INS%c R%d, %s, %s, %d", size_char[size], reg, mode[0].mode, mode[1].mode, displacement(pc, opcodes, bytes)); break; - case 3: util::stream_format(stream, "CHECK%c R%d, %s, %s", size_char[size], reg, mode[0].mode, mode[1].mode); break; - case 4: util::stream_format(stream, "INDEX%c R%d, %s, %s", size_char[size], reg, mode[0].mode, mode[1].mode); break; - case 5: util::stream_format(stream, "FFS%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); break; - case 6: - if (reg == 1) - util::stream_format(stream, "MOVSU%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); - else if (reg == 3) - util::stream_format(stream, "MOVUS%c %s, %s", size_char[size], mode[0].mode, mode[1].mode); - else - bytes = 1; - break; - default: bytes = 1; break; - } - } - break; - case 0x3e: - // format 9: xxxx xyyy yyoo ofii 0011 1110 - { - u16 const opword = opcodes.r16(pc + bytes); bytes += 2; - - addr_mode mode[] = { addr_mode(BIT(opword, 11, 5)), addr_mode(BIT(opword, 6, 5)) }; - size_code const size_f = BIT(opword, 0) ? SIZE_D : SIZE_Q; - size_code const size = size_code(opword & 3); - - switch (BIT(opword, 3, 3)) - { - case 0: - // MOVif src,dst - // gen,gen - // read.i,write.f - mode[0].size_i(size); - mode[1].size_f(size_f); - decode(mode, pc, opcodes, bytes); - util::stream_format(stream, "MOV%c%c %s, %s", size_char[size], BIT(opword, 0) ? 'F' : 'L', mode[0].mode, mode[1].mode); - break; - case 1: - // LFSR src - // gen - // read.D - mode[0].size_i(size); - decode(mode, pc, opcodes, bytes); - util::stream_format(stream, "LFSR %s", mode[0].mode); - break; - case 2: - // MOVLF src,dst - // gen,gen - // read.L,write.F - mode[0].size_f(SIZE_Q); - mode[1].size_f(size_f); - decode(mode, pc, opcodes, bytes); - util::stream_format(stream, "MOVLF %s, %s", mode[0].mode, mode[1].mode); - break; - case 3: - // MOVFL src,dst - // gen,gen - // read.F,write.L - mode[0].size_f(SIZE_D); - mode[1].size_f(size_f); - decode(mode, pc, opcodes, bytes); - util::stream_format(stream, "MOVFL %s, %s", mode[0].mode, mode[1].mode); - break; - case 4: - // ROUNDfi src,dst - // gen,gen - // read.f,write.i - mode[0].size_f(size_f); - mode[1].size_i(size); - decode(mode, pc, opcodes, bytes); - util::stream_format(stream, "ROUND%c%c %s, %s", BIT(opword, 0) ? 'F' : 'L', size_char[size], mode[0].mode, mode[1].mode); - break; - case 5: - // TRUNCfi src,dst - // gen,gen - // read.f,write.i - mode[0].size_f(size_f); - mode[1].size_i(size); - decode(mode, pc, opcodes, bytes); - util::stream_format(stream, "TRUNC%c%c %s, %s", BIT(opword, 0) ? 'F' : 'L', size_char[size], mode[0].mode, mode[1].mode); - break; - case 6: - // SFSR dst - // gen - // write.D - mode[0].size_i(size); - decode(mode, pc, opcodes, bytes); - util::stream_format(stream, "SFSR %s", mode[0].mode); - break; - case 7: - // FLOORfi src,dst - // gen,gen - // read.f,write.i - mode[0].size_f(size_f); - mode[1].size_i(size); - decode(mode, pc, opcodes, bytes); - util::stream_format(stream, "FLOOR%c%c %s, %s", BIT(opword, 0) ? 'F' : 'L', size_char[size], mode[0].mode, mode[1].mode); - break; - } - } - break; - case 0x7e: // format 10 - bytes = 1; - break; - case 0xbe: - // format 11: xxxx xyyy yyoo oo0f 1011 1110 - { - u16 const opword = opcodes.r16(pc + bytes); bytes += 2; - - addr_mode mode[] = { addr_mode(BIT(opword, 11, 5)), addr_mode(BIT(opword, 6, 5)) }; - size_code const size_f = BIT(opword, 0) ? SIZE_D : SIZE_Q; - - mode[0].size_f(size_f); - mode[1].size_f(size_f); - decode(mode, pc, opcodes, bytes); - - switch (BIT(opword, 2, 4)) - { - case 0x0: util::stream_format(stream, "ADD%c %s, %s", BIT(opword, 0) ? 'F' : 'L', mode[0].mode, mode[1].mode); break; - case 0x1: util::stream_format(stream, "MOV%c %s, %s", BIT(opword, 0) ? 'F' : 'L', mode[0].mode, mode[1].mode); break; - case 0x2: util::stream_format(stream, "CMP%c %s, %s", BIT(opword, 0) ? 'F' : 'L', mode[0].mode, mode[1].mode); break; - case 0x4: util::stream_format(stream, "SUB%c %s, %s", BIT(opword, 0) ? 'F' : 'L', mode[0].mode, mode[1].mode); break; - case 0x5: util::stream_format(stream, "NEG%c %s, %s", BIT(opword, 0) ? 'F' : 'L', mode[0].mode, mode[1].mode); break; - case 0x8: util::stream_format(stream, "DIV%c %s, %s", BIT(opword, 0) ? 'F' : 'L', mode[0].mode, mode[1].mode); break; - case 0xc: util::stream_format(stream, "MUL%c %s, %s", BIT(opword, 0) ? 'F' : 'L', mode[0].mode, mode[1].mode); break; - case 0xd: util::stream_format(stream, "ABS%c %s, %s", BIT(opword, 0) ? 'F' : 'L', mode[0].mode, mode[1].mode); break; - default: bytes = 1; break; - } - } - break; - case 0xfe: // format 12 - case 0x9e: // format 13 - bytes = 1; - break; - case 0x1e: - // format 14: xxxx xsss s0oo ooii 0001 1110 - { - char const *const mmureg[] = { "BPR0", "BPR1", "", "", "PF0", "PF1", "", "", "SC", "", "MSR", "BCNT", "PTB0", "PTB1", "", "EIA" }; - - u16 const opword = opcodes.r16(pc + bytes); bytes += 2; - - addr_mode mode[] = { addr_mode(BIT(opword, 11, 5)), addr_mode(0x13) }; - - unsigned const quick = BIT(opword, 7, 4); - size_code const size = size_code(opword & 3); - - mode[0].size_i(size); - decode(mode, pc, opcodes, bytes); - - switch (BIT(opword, 2, 4)) - { - case 0: util::stream_format(stream, "RDVAL %s", mode[0].mode); break; - case 1: util::stream_format(stream, "WRVAL %s", mode[0].mode); break; - case 2: util::stream_format(stream, "LMR %s, %s", mmureg[quick], mode[0].mode); break; - case 3: util::stream_format(stream, "SMR %s, %s", mmureg[quick], mode[0].mode); break; - default: bytes = 1; break; - } - } - break; - case 0x16: // format 15.0 - case 0x36: // format 15.1 - case 0xb6: // format 15.5 - case 0x5e: // format 16 - case 0xde: // format 17 - case 0x8e: // format 18 - case 0x06: - case 0x26: - case 0x46: - case 0x66: - case 0x86: - case 0xa6: - case 0xc6: - case 0xe6: - // format 19 - default: - bytes = 1; - break; - } - - return bytes | flags; -} |