| "use strict"; |
| |
| var |
| table16 = [], |
| table32 = [], |
| table0F_16 = [], |
| table0F_32 = []; |
| |
| CPU.prototype.table16 = table16; |
| CPU.prototype.table32 = table32; |
| |
| CPU.prototype.table0F_16 = table0F_16; |
| CPU.prototype.table0F_32 = table0F_32; |
| |
| |
| #define op(n, code) table16[n] = table32[n] = function(cpu) { code }; |
| |
| // opcode with modm byte |
| #define opm(n, code)\ |
| table16[n] = table32[n] = function(cpu) { var modrm_byte = cpu.read_imm8(); code }; |
| |
| // opcode that has a 16 and a 32 bit version |
| #define op2(n, code16, code32)\ |
| table16[n] = function(cpu) { code16 };\ |
| table32[n] = function(cpu) { code32 }; |
| |
| #define opm2(n, code16, code32)\ |
| table16[n] = function(cpu) { var modrm_byte = cpu.read_imm8(); code16 };\ |
| table32[n] = function(cpu) { var modrm_byte = cpu.read_imm8(); code32 }; |
| |
| |
| #define unimplemented_sse(num) op(num, {\ |
| dbg_log("No SSE", LOG_CPU);\ |
| cpu.trigger_ud();\ |
| }) |
| |
| #define undefined_instruction(num) op(num, {\ |
| if(DEBUG) throw "Possible fault: undefined instruction"; \ |
| cpu.trigger_ud();\ |
| }) |
| |
| #define todo()\ |
| if(DEBUG) { dbg_trace(); throw "TODO"; }\ |
| cpu.trigger_ud(); |
| |
| |
| #define each_jcc(macro)\ |
| macro(0x0, ( cpu.test_o()));\ |
| macro(0x1, (!cpu.test_o()));\ |
| macro(0x2, ( cpu.test_b()));\ |
| macro(0x3, (!cpu.test_b()));\ |
| macro(0x4, ( cpu.test_z()));\ |
| macro(0x5, (!cpu.test_z()));\ |
| macro(0x6, ( cpu.test_be()));\ |
| macro(0x7, (!cpu.test_be()));\ |
| macro(0x8, ( cpu.test_s()));\ |
| macro(0x9, (!cpu.test_s()));\ |
| macro(0xA, ( cpu.test_p()));\ |
| macro(0xB, (!cpu.test_p()));\ |
| macro(0xC, ( cpu.test_l()));\ |
| macro(0xD, (!cpu.test_l()));\ |
| macro(0xE, ( cpu.test_le()));\ |
| macro(0xF, (!cpu.test_le())); |
| |
| |
| // very special, should be somewhere else? |
| #define lss_op16(sreg)\ |
| if(modrm_byte >= 0xC0) { cpu.trigger_ud(); }\ |
| cpu.lss16(sreg, cpu.modrm_resolve(modrm_byte), modrm_byte >> 2 & 14); |
| |
| |
| #define lss_op32(sreg)\ |
| if(modrm_byte >= 0xC0) { cpu.trigger_ud(); }\ |
| cpu.lss32(sreg, cpu.modrm_resolve(modrm_byte), modrm_byte >> 3 & 7); |
| |
| |
| #define bt_op16(op, arg16)\ |
| if(modrm_byte < 0xC0) {\ |
| cpu.op ## _mem(cpu.modrm_resolve(modrm_byte), arg16);\ |
| } else {\ |
| reg_e16 = cpu.op ## _reg(reg_e16, arg16 & 15);\ |
| } |
| |
| #define bt_op32(op, arg32)\ |
| if(modrm_byte < 0xC0) {\ |
| cpu.op ## _mem(cpu.modrm_resolve(modrm_byte), arg32);\ |
| } else {\ |
| reg_e32s = cpu.op ## _reg(reg_e32s, arg32 & 31);\ |
| } |
| |
| |
| // equivalent to switch(modrm_byte >> 3 & 7) |
| //#define sub_op(i0, i1, i2, i3, i4, i5, i6, i7) \ |
| // if(modrm_byte & 0x20) { sub_op1(i4, i5, i6, i7) }\ |
| // else { sub_op1(i0, i1, i2, i3) } |
| // |
| //#define sub_op1(i0, i1, i2, i3)\ |
| // if(modrm_byte & 0x10) { sub_op2(i2, i3) }\ |
| // else { sub_op2(i0, i1) } |
| // |
| //#define sub_op2(i0, i1)\ |
| // if(modrm_byte & 0x08) { i1 }\ |
| // else { i0 } |
| |
| |
| // Evaluate the modrm byte of the instruction and run one |
| // of the 8 instructions depending on the middle 3 bits. |
| // Used by 0x80-0x83, 0xd0-0xd3, 0xc0-0xc1, 0xf6-0xf7 and 0xff |
| #define sub_op(i0, i1, i2, i3, i4, i5, i6, i7) \ |
| switch(modrm_byte >> 3 & 7) {\ |
| case 0: i0; break;\ |
| case 1: i1; break;\ |
| case 2: i2; break;\ |
| case 3: i3; break;\ |
| case 4: i4; break;\ |
| case 5: i5; break;\ |
| case 6: i6; break;\ |
| case 7: i7; break;\ |
| } |
| |
| #define sub_op_instr(i)\ |
| result = i(data, data2) |
| |
| #define sub_op_write(size, second_operand, i0, i1, i2, i3, i4, i5, i6, i7)\ |
| var data2;\ |
| write_e ## size(0; data2 = second_operand;\ |
| sub_op(sub_op_instr(i0), sub_op_instr(i1), sub_op_instr(i2), sub_op_instr(i3),\ |
| sub_op_instr(i4), sub_op_instr(i5), sub_op_instr(i6), sub_op_instr(i7))\ |
| ) |
| |
| |
| // equivalent to switch(modrm_byte >> 3 & 7) |
| #define sub_op_expr(i0, i1, i2, i3, i4, i5, i6, i7) \ |
| ((modrm_byte & 0x20) ? sub_op_expr1(i4, i5, i6, i7) :\ |
| sub_op_expr1(i0, i1, i2, i3)) |
| |
| #define sub_op_expr1(i0, i1, i2, i3)\ |
| ((modrm_byte & 0x10) ? sub_op_expr2(i2, i3) :\ |
| sub_op_expr2(i0, i1)) |
| |
| #define sub_op_expr2(i0, i1)\ |
| ((modrm_byte & 0x08) ? (i1) :\ |
| (i0)) |
| |
| |
| #define pop_sreg_op(n, reg)\ |
| op2(n, \ |
| { cpu.switch_seg(reg, cpu.safe_read16(cpu.get_stack_pointer(0))); cpu.stack_reg[cpu.reg_vsp] += 2; }, \ |
| { cpu.switch_seg(reg, cpu.safe_read16(cpu.get_stack_pointer(0))); cpu.stack_reg[cpu.reg_vsp] += 4; }); |
| |
| |
| #define reg_e8 cpu.reg8[modrm_byte << 2 & 0xC | modrm_byte >> 2 & 1] |
| #define reg_e8s cpu.reg8s[modrm_byte << 2 & 0xC | modrm_byte >> 2 & 1] |
| #define reg_g8 cpu.reg8[modrm_byte >> 1 & 0xC | modrm_byte >> 5 & 1] |
| |
| #define reg_e16 cpu.reg16[modrm_byte << 1 & 14] |
| #define reg_e16s cpu.reg16s[modrm_byte << 1 & 14] |
| #define reg_g16 cpu.reg16[modrm_byte >> 2 & 14] |
| #define reg_g16s cpu.reg16s[modrm_byte >> 2 & 14] |
| |
| #define reg_e32 cpu.reg32[modrm_byte & 7] |
| #define reg_e32s cpu.reg32s[modrm_byte & 7] |
| //#define reg_g32 cpu.reg32[modrm_byte >> 3 & 7] |
| #define reg_g32s cpu.reg32s[modrm_byte >> 3 & 7] |
| |
| |
| #define cpu_safe_read8(addr) cpu.safe_read8(addr) |
| #define cpu_safe_read8s(addr) (cpu.safe_read8(addr) << 24 >> 24) |
| #define cpu_safe_read16(addr) cpu.safe_read16(addr) |
| #define cpu_safe_read16s(addr) (cpu.safe_read16(addr) << 16 >> 16) |
| #define cpu_safe_read32(addr) (cpu.safe_read32s(addr) >>> 0) |
| #define cpu_safe_read32s(addr) cpu.safe_read32s(addr) |
| |
| #define modrm_read(size)\ |
| if(modrm_byte < 0xC0) {\ |
| var data = cpu_safe_read ## size(cpu.modrm_resolve(modrm_byte)); \ |
| } else {\ |
| data = reg_e ## size;\ |
| } |
| |
| |
| #define read_e8 modrm_read(8) |
| #define read_e8s modrm_read(8s) |
| #define read_e16 modrm_read(16) |
| #define read_e16s modrm_read(16s) |
| #define read_e32 modrm_read(32) |
| #define read_e32s modrm_read(32s) |
| |
| |
| // use modrm_byte to write a value to cpu.memory or register |
| // (without reading it beforehand) |
| #define modrm_set(arg, size) \ |
| if(modrm_byte < 0xC0) var addr = cpu.modrm_resolve(modrm_byte);\ |
| var data = arg;\ |
| if(modrm_byte < 0xC0) {\ |
| cpu.safe_write ## size(addr, data);\ |
| } else {\ |
| reg_e ## size = data;\ |
| } |
| |
| #define set_eb(arg) modrm_set(arg, 8) |
| #define set_ev16(arg) modrm_set(arg, 16) |
| #define set_ev32(arg) modrm_set(arg, 32) |
| |
| |
| // use modrm_byte to write a value to cpu.memory or register, |
| // using the previous data from cpu.memory or register. |
| // op is a function call that needs to return the result |
| #define write_e8(op)\ |
| var data;\ |
| var addr;\ |
| var result;\ |
| if(modrm_byte < 0xC0) {\ |
| addr = cpu.translate_address_write(cpu.modrm_resolve(modrm_byte));\ |
| data = cpu.memory.read8(addr);\ |
| } else {\ |
| data = reg_e8;\ |
| }\ |
| result = op;\ |
| if(modrm_byte < 0xC0) {\ |
| cpu.memory.write8(addr, result);\ |
| } else {\ |
| reg_e8 = result;\ |
| } |
| |
| |
| #define write_ev16(op)\ |
| var data;\ |
| var virt_addr;\ |
| var phys_addr;\ |
| var phys_addr_high = 0;\ |
| var result;\ |
| if(modrm_byte < 0xC0) {\ |
| virt_addr = cpu.modrm_resolve(modrm_byte);\ |
| phys_addr = cpu.translate_address_write(virt_addr);\ |
| if(cpu.paging && (virt_addr & 0xFFF) === 0xFFF) {\ |
| phys_addr_high = cpu.translate_address_write(virt_addr + 1);\ |
| data = cpu.virt_boundary_read16(phys_addr, phys_addr_high);\ |
| } else {\ |
| data = cpu.memory.read16(phys_addr);\ |
| }\ |
| } else {\ |
| data = reg_e16;\ |
| }\ |
| result = op;\ |
| if(modrm_byte < 0xC0) {\ |
| if(phys_addr_high) {\ |
| cpu.virt_boundary_write16(phys_addr, phys_addr_high, result);\ |
| } else {\ |
| cpu.memory.write16(phys_addr, result);\ |
| }\ |
| } else {\ |
| reg_e16 = result;\ |
| } |
| |
| |
| #define write_ev32s(op)\ |
| var data;\ |
| var virt_addr;\ |
| var phys_addr;\ |
| var phys_addr_high = 0;\ |
| var result;\ |
| if(modrm_byte < 0xC0) {\ |
| virt_addr = cpu.modrm_resolve(modrm_byte);\ |
| phys_addr = cpu.translate_address_write(virt_addr);\ |
| if(cpu.paging && (virt_addr & 0xFFF) >= 0xFFD) {\ |
| phys_addr_high = cpu.translate_address_write(virt_addr + 3);\ |
| data = cpu.virt_boundary_read32s(phys_addr, phys_addr_high);\ |
| } else {\ |
| data = cpu.memory.read32s(phys_addr);\ |
| }\ |
| } else {\ |
| data = reg_e32s;\ |
| }\ |
| result = op;\ |
| if(modrm_byte < 0xC0) {\ |
| if(phys_addr_high) {\ |
| cpu.virt_boundary_write32(phys_addr, phys_addr_high, result);\ |
| } else {\ |
| cpu.memory.write32(phys_addr, result);\ |
| }\ |
| } else {\ |
| reg_e32s = result;\ |
| }\ |
| |
| |
| |
| #define arith_group(n, instr)\ |
| opm(n, { write_e8(instr ## 8(data, reg_g8)) })\ |
| opm2(n | 1, { write_ev16(instr ## 16(data, reg_g16)) }, { write_ev32s(instr ## 32(data, reg_g32s)) })\ |
| opm(n | 2, { read_e8; reg_g8 = instr ## 8(reg_g8, data); })\ |
| opm2(n | 3, { read_e16; reg_g16 = instr ## 16(reg_g16, data); }, { read_e32s; reg_g32s = instr ## 32(reg_g32s, data); })\ |
| op(n | 4, { cpu.reg8[reg_al] = instr ## 8(cpu.reg8[reg_al], cpu.read_imm8()); })\ |
| op2(n | 5, { cpu.reg16[reg_ax] = instr ## 16(cpu.reg16[reg_ax], cpu.read_imm16()); }, { cpu.reg32s[reg_eax] = instr ## 32(cpu.reg32s[reg_eax], cpu.read_imm32s()); })\ |
| |
| |
| |
| // instructions start here |
| |
| arith_group(0x00, add); |
| |
| op2(0x06, { cpu.push16(cpu.sreg[reg_es]); }, { cpu.push32(cpu.sreg[reg_es]); }); |
| pop_sreg_op(0x07, reg_es); |
| |
| arith_group(0x08, or); |
| |
| op2(0x0E, { cpu.push16(cpu.sreg[reg_cs]); }, { cpu.push32(cpu.sreg[reg_cs]); }); |
| op(0x0F, { cpu.table0F[cpu.read_imm8()](cpu); }); |
| |
| arith_group(0x10, adc); |
| |
| op2(0x16, { cpu.push16(cpu.sreg[reg_ss]); }, { cpu.push32(cpu.sreg[reg_ss]); }); |
| pop_sreg_op(0x17, reg_ss); |
| |
| arith_group(0x18, sbb); |
| |
| op2(0x1E, { cpu.push16(cpu.sreg[reg_ds]); }, { cpu.push32(cpu.sreg[reg_ds]); }); |
| pop_sreg_op(0x1F, reg_ds); |
| |
| arith_group(0x20, and); |
| |
| op(0x26, { cpu.seg_prefix(reg_es); }); |
| op(0x27, { cpu.bcd_daa(); }); |
| |
| arith_group(0x28, sub); |
| |
| op(0x2E, { cpu.seg_prefix(reg_cs); }); |
| op(0x2F, { cpu.bcd_das(); }); |
| |
| arith_group(0x30, xor); |
| |
| op(0x36, { cpu.seg_prefix(reg_ss); }); |
| op(0x37, { cpu.bcd_aaa(); }); |
| |
| opm(0x38, { read_e8; cmp8(data, reg_g8); }) |
| opm2(0x39, { read_e16; cmp16(data, reg_g16); }, { read_e32s; cmp32(data, reg_g32s); }) |
| opm(0x3A, { read_e8; cmp8(reg_g8, data); }) |
| opm2(0x3B, { read_e16; cmp16(reg_g16, data); }, { read_e32s; cmp32(reg_g32s, data); }) |
| op(0x3C, { cmp8(cpu.reg8[reg_al], cpu.read_imm8()); }) |
| op2(0x3D, { cmp16(cpu.reg16[reg_ax], cpu.read_imm16()); }, { cmp32(cpu.reg32s[reg_eax], cpu.read_imm32s()); }) |
| |
| op(0x3E, { cpu.seg_prefix(reg_ds); }); |
| op(0x3F, { cpu.bcd_aas(); }); |
| |
| |
| op2(0x40, { cpu.reg16[reg_ax] = inc16(cpu.reg16[reg_ax]); }, { cpu.reg32s[reg_eax] = inc32(cpu.reg32s[reg_eax]); }); |
| op2(0x41, { cpu.reg16[reg_cx] = inc16(cpu.reg16[reg_cx]); }, { cpu.reg32s[reg_ecx] = inc32(cpu.reg32s[reg_ecx]); }); |
| op2(0x42, { cpu.reg16[reg_dx] = inc16(cpu.reg16[reg_dx]); }, { cpu.reg32s[reg_edx] = inc32(cpu.reg32s[reg_edx]); }); |
| op2(0x43, { cpu.reg16[reg_bx] = inc16(cpu.reg16[reg_bx]); }, { cpu.reg32s[reg_ebx] = inc32(cpu.reg32s[reg_ebx]); }); |
| op2(0x44, { cpu.reg16[reg_sp] = inc16(cpu.reg16[reg_sp]); }, { cpu.reg32s[reg_esp] = inc32(cpu.reg32s[reg_esp]); }); |
| op2(0x45, { cpu.reg16[reg_bp] = inc16(cpu.reg16[reg_bp]); }, { cpu.reg32s[reg_ebp] = inc32(cpu.reg32s[reg_ebp]); }); |
| op2(0x46, { cpu.reg16[reg_si] = inc16(cpu.reg16[reg_si]); }, { cpu.reg32s[reg_esi] = inc32(cpu.reg32s[reg_esi]); }); |
| op2(0x47, { cpu.reg16[reg_di] = inc16(cpu.reg16[reg_di]); }, { cpu.reg32s[reg_edi] = inc32(cpu.reg32s[reg_edi]); }); |
| |
| |
| op2(0x48, { cpu.reg16[reg_ax] = dec16(cpu.reg16[reg_ax]); }, { cpu.reg32s[reg_eax] = dec32(cpu.reg32s[reg_eax]); }); |
| op2(0x49, { cpu.reg16[reg_cx] = dec16(cpu.reg16[reg_cx]); }, { cpu.reg32s[reg_ecx] = dec32(cpu.reg32s[reg_ecx]); }); |
| op2(0x4A, { cpu.reg16[reg_dx] = dec16(cpu.reg16[reg_dx]); }, { cpu.reg32s[reg_edx] = dec32(cpu.reg32s[reg_edx]); }); |
| op2(0x4B, { cpu.reg16[reg_bx] = dec16(cpu.reg16[reg_bx]); }, { cpu.reg32s[reg_ebx] = dec32(cpu.reg32s[reg_ebx]); }); |
| op2(0x4C, { cpu.reg16[reg_sp] = dec16(cpu.reg16[reg_sp]); }, { cpu.reg32s[reg_esp] = dec32(cpu.reg32s[reg_esp]); }); |
| op2(0x4D, { cpu.reg16[reg_bp] = dec16(cpu.reg16[reg_bp]); }, { cpu.reg32s[reg_ebp] = dec32(cpu.reg32s[reg_ebp]); }); |
| op2(0x4E, { cpu.reg16[reg_si] = dec16(cpu.reg16[reg_si]); }, { cpu.reg32s[reg_esi] = dec32(cpu.reg32s[reg_esi]); }); |
| op2(0x4F, { cpu.reg16[reg_di] = dec16(cpu.reg16[reg_di]); }, { cpu.reg32s[reg_edi] = dec32(cpu.reg32s[reg_edi]); }); |
| |
| |
| op2(0x50, { cpu.push16(cpu.reg16[reg_ax]); }, { cpu.push32(cpu.reg32s[reg_eax]); }) |
| op2(0x51, { cpu.push16(cpu.reg16[reg_cx]); }, { cpu.push32(cpu.reg32s[reg_ecx]); }) |
| op2(0x52, { cpu.push16(cpu.reg16[reg_dx]); }, { cpu.push32(cpu.reg32s[reg_edx]); }) |
| op2(0x53, { cpu.push16(cpu.reg16[reg_bx]); }, { cpu.push32(cpu.reg32s[reg_ebx]); }) |
| op2(0x54, { cpu.push16(cpu.reg16[reg_sp]); }, { cpu.push32(cpu.reg32s[reg_esp]); }) |
| op2(0x55, { cpu.push16(cpu.reg16[reg_bp]); }, { cpu.push32(cpu.reg32s[reg_ebp]); }) |
| op2(0x56, { cpu.push16(cpu.reg16[reg_si]); }, { cpu.push32(cpu.reg32s[reg_esi]); }) |
| op2(0x57, { cpu.push16(cpu.reg16[reg_di]); }, { cpu.push32(cpu.reg32s[reg_edi]); }) |
| |
| op2(0x58, { cpu.reg16[reg_ax] = cpu.pop16(); }, { cpu.reg32s[reg_eax] = cpu.pop32s(); }) |
| op2(0x59, { cpu.reg16[reg_cx] = cpu.pop16(); }, { cpu.reg32s[reg_ecx] = cpu.pop32s(); }) |
| op2(0x5A, { cpu.reg16[reg_dx] = cpu.pop16(); }, { cpu.reg32s[reg_edx] = cpu.pop32s(); }) |
| op2(0x5B, { cpu.reg16[reg_bx] = cpu.pop16(); }, { cpu.reg32s[reg_ebx] = cpu.pop32s(); }) |
| op2(0x5C, { cpu.reg16[reg_sp] = cpu.pop16(); }, { cpu.reg32s[reg_esp] = cpu.pop32s(); }) |
| op2(0x5D, { cpu.reg16[reg_bp] = cpu.pop16(); }, { cpu.reg32s[reg_ebp] = cpu.pop32s(); }) |
| op2(0x5E, { cpu.reg16[reg_si] = cpu.pop16(); }, { cpu.reg32s[reg_esi] = cpu.pop32s(); }) |
| op2(0x5F, { cpu.reg16[reg_di] = cpu.pop16(); }, { cpu.reg32s[reg_edi] = cpu.pop32s(); }) |
| |
| |
| op2(0x60, { cpu.pusha16(); }, { cpu.pusha32(); }); |
| op2(0x61, { cpu.popa16(); }, { cpu.popa32(); }); |
| |
| op(0x62, { |
| // bound |
| dbg_log("Unimplemented BOUND instruction", LOG_CPU); |
| }); |
| opm(0x63, { |
| // arpl |
| write_ev16(cpu.arpl(data, modrm_byte >> 2 & 14)); |
| }); |
| |
| op(0x64, { cpu.seg_prefix(reg_fs); }); |
| op(0x65, { cpu.seg_prefix(reg_gs); }); |
| |
| op(0x66, { |
| // Operand-size override prefix |
| dbg_assert(cpu.operand_size_32 === cpu.is_32); |
| |
| cpu.operand_size_32 = !cpu.is_32; |
| cpu.update_operand_size(); |
| |
| cpu.do_op(); |
| |
| cpu.operand_size_32 = cpu.is_32; |
| cpu.update_operand_size(); |
| }); |
| |
| op(0x67, { |
| // Address-size override prefix |
| dbg_assert(cpu.address_size_32 === cpu.is_32); |
| |
| cpu.address_size_32 = !cpu.is_32; |
| cpu.update_address_size(); |
| |
| cpu.do_op(); |
| |
| cpu.address_size_32 = cpu.is_32; |
| cpu.update_address_size(); |
| }); |
| |
| op2(0x68, { cpu.push16(cpu.read_imm16()); }, { cpu.push32(cpu.read_imm32s()); }); |
| |
| opm2(0x69, { |
| read_e16s; |
| reg_g16 = cpu.imul_reg16(cpu.read_imm16s(), data); |
| }, { |
| read_e32s; |
| reg_g32s = cpu.imul_reg32(cpu.read_imm32s(), data); |
| }); |
| |
| op2(0x6A, { cpu.push16(cpu.read_imm8s()); }, { cpu.push32(cpu.read_imm8s()); }); |
| |
| opm2(0x6B, { |
| read_e16s; |
| reg_g16 = cpu.imul_reg16(cpu.read_imm8s(), data); |
| }, { |
| read_e32s; |
| reg_g32s = cpu.imul_reg32(cpu.read_imm8s(), data); |
| }); |
| |
| op(0x6C, { insb(cpu); }); |
| op2(0x6D, { insw(cpu); }, { insd(cpu); }); |
| op(0x6E, { outsb(cpu); }); |
| op2(0x6F, { outsw(cpu); }, { outsd(cpu); }); |
| |
| |
| #define group70(n, test) \ |
| op(0x70 | n, { \ |
| if(test) { \ |
| cpu.instruction_pointer = cpu.instruction_pointer + cpu.read_imm8s() | 0;\ |
| }\ |
| cpu.instruction_pointer++;\ |
| cpu.last_instr_jump = true;\ |
| }); |
| |
| each_jcc(group70); |
| #undef group70 |
| |
| |
| opm(0x80, { |
| if((modrm_byte & 56) === 56) |
| { |
| // CMP |
| read_e8; |
| cmp8(data, cpu.read_imm8()); |
| } |
| else |
| { |
| sub_op_write( |
| 8, cpu.read_imm8(), |
| add8, |
| or8, |
| adc8, |
| sbb8, |
| and8, |
| sub8, |
| xor8, |
| dbg_assert.bind(this, 0) |
| ) |
| } |
| }); |
| opm2(0x81, { |
| if((modrm_byte & 56) === 56) |
| { |
| // CMP |
| read_e16; |
| cmp16(data, cpu.read_imm16()); |
| } |
| else |
| { |
| sub_op_write( |
| v16, cpu.read_imm16(), |
| add16, |
| or16, |
| adc16, |
| sbb16, |
| and16, |
| sub16, |
| xor16, |
| dbg_assert.bind(this, 0) |
| ) |
| } |
| }, { |
| if((modrm_byte & 56) === 56) |
| { |
| // CMP |
| read_e32s; |
| cmp32(data, cpu.read_imm32s()); |
| } |
| else |
| { |
| sub_op_write( |
| v32s, cpu.read_imm32s(), |
| add32, |
| or32, |
| adc32, |
| sbb32, |
| and32, |
| sub32, |
| xor32, |
| dbg_assert.bind(this, 0) |
| ) |
| } |
| }); |
| op(0x82, { |
| cpu.table[0x80](cpu); // alias |
| }); |
| opm2(0x83, { |
| if((modrm_byte & 56) === 56) |
| { |
| // CMP |
| read_e16; |
| cmp16(data, cpu.read_imm8s()); |
| } |
| else |
| { |
| sub_op_write( |
| v16, cpu.read_imm8s(), |
| add16, |
| or16, |
| adc16, |
| sbb16, |
| and16, |
| sub16, |
| xor16, |
| dbg_assert.bind(this, 0) |
| ) |
| } |
| }, { |
| if((modrm_byte & 56) === 56) |
| { |
| // CMP |
| read_e32s; |
| cmp32(data, cpu.read_imm8s()); |
| } |
| else |
| { |
| sub_op_write( |
| v32s, cpu.read_imm8s(), |
| add32, |
| or32, |
| adc32, |
| sbb32, |
| and32, |
| sub32, |
| xor32, |
| dbg_assert.bind(this, 0) |
| ) |
| } |
| }); |
| |
| opm(0x84, { read_e8; test8(data, reg_g8); }) |
| opm2(0x85, { read_e16; test16(data, reg_g16); }, { read_e32s; test32(data, reg_g32s); }) |
| |
| |
| opm(0x86, { write_e8(cpu.xchg8(data, modrm_byte)); }); |
| opm2(0x87, { |
| write_ev16(cpu.xchg16(data, modrm_byte)); |
| }, { |
| write_ev32s(cpu.xchg32(data, modrm_byte)); |
| }); |
| |
| opm(0x88, { set_eb(reg_g8); }) |
| opm2(0x89, { set_ev16(reg_g16); }, { set_ev32(reg_g32s); }) |
| |
| opm(0x8A, { |
| read_e8; |
| reg_g8 = data; |
| }); |
| opm2(0x8B, { |
| read_e16; |
| reg_g16 = data; |
| }, { |
| read_e32s; |
| reg_g32s = data; |
| }); |
| |
| opm2(0x8C, { |
| set_ev16(cpu.sreg[modrm_byte >> 3 & 7]); |
| }, { |
| set_ev32(cpu.sreg[modrm_byte >> 3 & 7]); |
| }); |
| |
| opm2(0x8D, { |
| // lea |
| if(modrm_byte >= 0xC0) |
| { |
| cpu.trigger_ud(); |
| } |
| var mod = modrm_byte >> 3 & 7; |
| |
| // override prefix, so modrm_resolve does not return the segment part |
| cpu.segment_prefix = SEG_PREFIX_ZERO; |
| cpu.reg16[mod << 1] = cpu.modrm_resolve(modrm_byte); |
| cpu.segment_prefix = SEG_PREFIX_NONE; |
| }, { |
| if(modrm_byte >= 0xC0) |
| { |
| cpu.trigger_ud(); |
| } |
| var mod = modrm_byte >> 3 & 7; |
| |
| cpu.segment_prefix = SEG_PREFIX_ZERO; |
| cpu.reg32s[mod] = cpu.modrm_resolve(modrm_byte); |
| cpu.segment_prefix = SEG_PREFIX_NONE; |
| }); |
| |
| opm(0x8E, { |
| var mod = modrm_byte >> 3 & 7; |
| |
| read_e16; |
| |
| cpu.switch_seg(mod, data); |
| |
| if(mod === reg_ss) |
| { |
| // TODO |
| // run next instruction, so no irqs are handled |
| // Can't use cpu.cycle, because prefixes are still active |
| } |
| }); |
| |
| opm2(0x8F, { |
| // pop |
| var sp = cpu.safe_read16(cpu.get_stack_pointer(0)); |
| |
| cpu.stack_reg[cpu.reg_vsp] += 2; |
| |
| if(modrm_byte < 0xC0) { |
| var addr = cpu.modrm_resolve(modrm_byte); |
| cpu.stack_reg[cpu.reg_vsp] -= 2; |
| cpu.safe_write16(addr, sp); |
| cpu.stack_reg[cpu.reg_vsp] += 2; |
| } else { |
| reg_e16 = sp; |
| } |
| }, { |
| var sp = cpu.safe_read32s(cpu.get_stack_pointer(0)); |
| |
| // change esp first, then resolve modrm address |
| cpu.stack_reg[cpu.reg_vsp] += 4; |
| |
| if(modrm_byte < 0xC0) { |
| var addr = cpu.modrm_resolve(modrm_byte); |
| |
| // Before attempting a write that might cause a page fault, |
| // we must set esp to the old value. Fuck Intel. |
| cpu.stack_reg[cpu.reg_vsp] -= 4; |
| cpu.safe_write32(addr, sp); |
| cpu.stack_reg[cpu.reg_vsp] += 4; |
| } else { |
| reg_e32s = sp; |
| } |
| }); |
| |
| op(0x90, /* nop */ ); |
| op2(0x91, { cpu.xchg16r(reg_cx) }, { cpu.xchg32r(reg_ecx) }); |
| op2(0x92, { cpu.xchg16r(reg_dx) }, { cpu.xchg32r(reg_edx) }); |
| op2(0x93, { cpu.xchg16r(reg_bx) }, { cpu.xchg32r(reg_ebx) }); |
| op2(0x94, { cpu.xchg16r(reg_sp) }, { cpu.xchg32r(reg_esp) }); |
| op2(0x95, { cpu.xchg16r(reg_bp) }, { cpu.xchg32r(reg_ebp) }); |
| op2(0x96, { cpu.xchg16r(reg_si) }, { cpu.xchg32r(reg_esi) }); |
| op2(0x97, { cpu.xchg16r(reg_di) }, { cpu.xchg32r(reg_edi) }); |
| |
| op2(0x98, |
| { /* cbw */ cpu.reg16[reg_ax] = cpu.reg8s[reg_al]; }, |
| { /* cwde */ cpu.reg32s[reg_eax] = cpu.reg16s[reg_ax]; }); |
| |
| op2(0x99, |
| { /* cwd */ cpu.reg16[reg_dx] = cpu.reg16s[reg_ax] >> 15; }, |
| { /* cdq */ cpu.reg32s[reg_edx] = cpu.reg32s[reg_eax] >> 31; }); |
| |
| op2(0x9A, { |
| // callf |
| |
| var new_ip = cpu.read_imm16(); |
| var new_cs = cpu.read_imm16(); |
| |
| cpu.writable_or_pagefault(cpu.get_stack_pointer(-4), 4); |
| cpu.push16(cpu.sreg[reg_cs]); |
| cpu.push16(cpu.get_real_eip()); |
| |
| cpu.switch_seg(reg_cs, new_cs); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + new_ip | 0; |
| cpu.last_instr_jump = true; |
| }, { |
| var new_ip = cpu.read_imm32s(); |
| var new_cs = cpu.read_imm16(); |
| |
| cpu.writable_or_pagefault(cpu.get_stack_pointer(-8), 8); |
| cpu.push32(cpu.sreg[reg_cs]); |
| cpu.push32(cpu.get_real_eip()); |
| |
| cpu.switch_seg(reg_cs, new_cs); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + new_ip | 0; |
| cpu.last_instr_jump = true; |
| }); |
| |
| op(0x9B, { |
| // fwait: check for pending fpu exceptions |
| if((cpu.cr0 & (CR0_MP | CR0_TS)) === (CR0_MP | CR0_TS)) |
| { |
| // task switched and MP bit is set |
| cpu.trigger_nm(); |
| } |
| else |
| { |
| if(cpu.fpu) |
| { |
| cpu.fpu.fwait(); |
| } |
| else |
| { |
| // EM bit isn't checked |
| // If there's no FPU, do nothing |
| } |
| } |
| }); |
| op2(0x9C, { |
| // pushf |
| if((cpu.flags & flag_vm) && cpu.getiopl() < 3) |
| { |
| cpu.trigger_gp(0); |
| } |
| else |
| { |
| cpu.load_eflags(); |
| cpu.push16(cpu.flags); |
| } |
| }, { |
| // pushf |
| if((cpu.flags & flag_vm) && cpu.getiopl() < 3) |
| { |
| // trap to virtual 8086 monitor |
| cpu.trigger_gp(0); |
| } |
| else |
| { |
| cpu.load_eflags(); |
| // vm and rf flag are cleared in image stored on the stack |
| cpu.push32(cpu.flags & ~flag_vm & ~flag_rf); |
| } |
| }); |
| op2(0x9D, { |
| // popf |
| if((cpu.flags & flag_vm) && cpu.getiopl() < 3) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| cpu.update_eflags((cpu.flags & ~0xFFFF) | cpu.pop16()); |
| cpu.handle_irqs(); |
| }, { |
| // popf |
| if((cpu.flags & flag_vm) && cpu.getiopl() < 3) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| cpu.update_eflags(cpu.pop32s()); |
| cpu.handle_irqs(); |
| }); |
| op(0x9E, { |
| // sahf |
| cpu.flags = (cpu.flags & ~0xFF) | cpu.reg8[reg_ah]; |
| cpu.flags = (cpu.flags & flags_mask) | flags_default; |
| cpu.flags_changed = 0; |
| }); |
| op(0x9F, { |
| // lahf |
| cpu.load_eflags(); |
| cpu.reg8[reg_ah] = cpu.flags; |
| }); |
| |
| op(0xA0, { |
| // mov |
| var data = cpu.safe_read8(cpu.read_moffs()); |
| cpu.reg8[reg_al] = data; |
| }); |
| op2(0xA1, { |
| // mov |
| var data = cpu.safe_read16(cpu.read_moffs()); |
| cpu.reg16[reg_ax] = data; |
| }, { |
| var data = cpu.safe_read32s(cpu.read_moffs()); |
| cpu.reg32s[reg_eax] = data; |
| }); |
| op(0xA2, { |
| // mov |
| cpu.safe_write8(cpu.read_moffs(), cpu.reg8[reg_al]); |
| }); |
| op2(0xA3, { |
| // mov |
| cpu.safe_write16(cpu.read_moffs(), cpu.reg16[reg_ax]); |
| }, { |
| cpu.safe_write32(cpu.read_moffs(), cpu.reg32s[reg_eax]); |
| }); |
| |
| op(0xA4, { movsb(cpu); }); |
| op2(0xA5, { movsw(cpu); }, { movsd(cpu); }); |
| op(0xA6, { cmpsb(cpu); }); |
| op2(0xA7, { cmpsw(cpu); }, { cmpsd(cpu); }); |
| |
| op(0xA8, { |
| test8(cpu.reg8[reg_al], cpu.read_imm8()); |
| }); |
| op2(0xA9, { |
| test16(cpu.reg16[reg_ax], cpu.read_imm16()); |
| }, { |
| test32(cpu.reg32s[reg_eax], cpu.read_imm32s()); |
| }); |
| |
| op(0xAA, { stosb(cpu); }); |
| op2(0xAB, { stosw(cpu); }, { stosd(cpu); }); |
| op(0xAC, { lodsb(cpu); }); |
| op2(0xAD, { lodsw(cpu); }, { lodsd(cpu); }); |
| op(0xAE, { scasb(cpu); }); |
| op2(0xAF, { scasw(cpu); }, { scasd(cpu); }); |
| |
| |
| op(0xB0, { cpu.reg8[reg_al] = cpu.read_imm8(); }) |
| op(0xB1, { cpu.reg8[reg_cl] = cpu.read_imm8(); }) |
| op(0xB2, { cpu.reg8[reg_dl] = cpu.read_imm8(); }) |
| op(0xB3, { cpu.reg8[reg_bl] = cpu.read_imm8(); }) |
| op(0xB4, { cpu.reg8[reg_ah] = cpu.read_imm8(); }) |
| op(0xB5, { cpu.reg8[reg_ch] = cpu.read_imm8(); }) |
| op(0xB6, { cpu.reg8[reg_dh] = cpu.read_imm8(); }) |
| op(0xB7, { cpu.reg8[reg_bh] = cpu.read_imm8(); }) |
| |
| op2(0xB8, { cpu.reg16[reg_ax] = cpu.read_imm16(); }, { cpu.reg32s[reg_eax] = cpu.read_imm32s(); }); |
| op2(0xB9, { cpu.reg16[reg_cx] = cpu.read_imm16(); }, { cpu.reg32s[reg_ecx] = cpu.read_imm32s(); }); |
| op2(0xBA, { cpu.reg16[reg_dx] = cpu.read_imm16(); }, { cpu.reg32s[reg_edx] = cpu.read_imm32s(); }); |
| op2(0xBB, { cpu.reg16[reg_bx] = cpu.read_imm16(); }, { cpu.reg32s[reg_ebx] = cpu.read_imm32s(); }); |
| op2(0xBC, { cpu.reg16[reg_sp] = cpu.read_imm16(); }, { cpu.reg32s[reg_esp] = cpu.read_imm32s(); }); |
| op2(0xBD, { cpu.reg16[reg_bp] = cpu.read_imm16(); }, { cpu.reg32s[reg_ebp] = cpu.read_imm32s(); }); |
| op2(0xBE, { cpu.reg16[reg_si] = cpu.read_imm16(); }, { cpu.reg32s[reg_esi] = cpu.read_imm32s(); }); |
| op2(0xBF, { cpu.reg16[reg_di] = cpu.read_imm16(); }, { cpu.reg32s[reg_edi] = cpu.read_imm32s(); }); |
| |
| |
| opm(0xC0, { |
| sub_op_write( |
| 8, cpu.read_imm8() & 31, |
| cpu.rol8, |
| cpu.ror8, |
| cpu.rcl8, |
| cpu.rcr8, |
| cpu.shl8, |
| cpu.shr8, |
| cpu.shl8, |
| cpu.sar8 |
| ) |
| }); |
| opm2(0xC1, { |
| sub_op_write( |
| v16, cpu.read_imm8() & 31, |
| cpu.rol16, |
| cpu.ror16, |
| cpu.rcl16, |
| cpu.rcr16, |
| cpu.shl16, |
| cpu.shr16, |
| cpu.shl16, |
| cpu.sar16 |
| ) |
| }, { |
| sub_op_write( |
| v32s, cpu.read_imm8() & 31, |
| cpu.rol32, |
| cpu.ror32, |
| cpu.rcl32, |
| cpu.rcr32, |
| cpu.shl32, |
| cpu.shr32, |
| cpu.shl32, |
| cpu.sar32 |
| ) |
| }); |
| |
| op2(0xC2, { |
| // retn |
| var imm16 = cpu.read_imm16(); |
| |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + cpu.pop16() | 0; |
| cpu.stack_reg[cpu.reg_vsp] += imm16; |
| cpu.last_instr_jump = true; |
| }, { |
| // retn |
| var imm16 = cpu.read_imm16(); |
| |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + cpu.pop32s() | 0; |
| cpu.stack_reg[cpu.reg_vsp] += imm16; |
| cpu.last_instr_jump = true; |
| }); |
| op2(0xC3, { |
| // retn |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + cpu.pop16() | 0; |
| cpu.last_instr_jump = true; |
| }, { |
| // retn |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + cpu.pop32s() | 0; |
| cpu.last_instr_jump = true; |
| }); |
| |
| opm2(0xC4, { |
| lss_op16(reg_es); |
| }, { |
| lss_op32(reg_es); |
| }); |
| opm2(0xC5, { |
| lss_op16(reg_ds); |
| }, { |
| lss_op32(reg_ds); |
| }); |
| |
| opm(0xC6, { set_eb(cpu.read_imm8()); }) |
| opm2(0xC7, { set_ev16(cpu.read_imm16()); }, { set_ev32(cpu.read_imm32s()); }) |
| |
| op2(0xC8, { cpu.enter16(); }, { cpu.enter32(); }); |
| op2(0xC9, { |
| // leave |
| cpu.stack_reg[cpu.reg_vsp] = cpu.stack_reg[cpu.reg_vbp]; |
| cpu.reg16[reg_bp] = cpu.pop16(); |
| }, { |
| cpu.stack_reg[cpu.reg_vsp] = cpu.stack_reg[cpu.reg_vbp]; |
| cpu.reg32s[reg_ebp] = cpu.pop32s(); |
| }); |
| op2(0xCA, { |
| // retf |
| cpu.translate_address_read(cpu.get_seg(reg_ss) + cpu.stack_reg[cpu.reg_vsp] + 4); |
| |
| var imm16 = cpu.read_imm16(); |
| var ip = cpu.pop16(); |
| |
| cpu.switch_seg(reg_cs, cpu.pop16()); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + ip | 0; |
| |
| cpu.stack_reg[cpu.reg_vsp] += imm16; |
| cpu.last_instr_jump = true; |
| }, { |
| // retf |
| cpu.translate_address_read(cpu.get_seg(reg_ss) + cpu.stack_reg[cpu.reg_vsp] + 8); |
| |
| var imm16 = cpu.read_imm16(); |
| var ip = cpu.pop32s(); |
| |
| cpu.switch_seg(reg_cs, cpu.pop32s() & 0xFFFF); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + ip | 0; |
| |
| cpu.stack_reg[cpu.reg_vsp] += imm16; |
| cpu.last_instr_jump = true; |
| }); |
| op2(0xCB, { |
| // retf |
| cpu.translate_address_read(cpu.get_seg(reg_ss) + cpu.stack_reg[cpu.reg_vsp] + 4); |
| var ip = cpu.pop16(); |
| |
| cpu.switch_seg(reg_cs, cpu.pop16()); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + ip | 0; |
| cpu.last_instr_jump = true; |
| }, { |
| // retf |
| cpu.translate_address_read(cpu.get_seg(reg_ss) + cpu.stack_reg[cpu.reg_vsp] + 8); |
| var ip = cpu.pop32s(); |
| |
| cpu.switch_seg(reg_cs, cpu.pop32s() & 0xFFFF); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + ip | 0; |
| cpu.last_instr_jump = true; |
| }); |
| |
| op(0xCC, { |
| // INT3 |
| cpu.call_interrupt_vector(3, true, false); |
| }); |
| op(0xCD, { |
| // INT |
| var imm8 = cpu.read_imm8(); |
| |
| cpu.call_interrupt_vector(imm8, true, false); |
| }); |
| op(0xCE, { |
| // INTO |
| if(cpu.getof()) |
| { |
| cpu.call_interrupt_vector(4, true, false); |
| } |
| }); |
| |
| op2(0xCF, { |
| // iret |
| cpu.iret16(); |
| }, { |
| cpu.iret32(); |
| }); |
| |
| opm(0xD0, { |
| sub_op_write( |
| 8, 1, |
| cpu.rol8, |
| cpu.ror8, |
| cpu.rcl8, |
| cpu.rcr8, |
| cpu.shl8, |
| cpu.shr8, |
| cpu.shl8, |
| cpu.sar8 |
| ) |
| }); |
| opm2(0xD1, { |
| sub_op_write( |
| v16, 1, |
| cpu.rol16, |
| cpu.ror16, |
| cpu.rcl16, |
| cpu.rcr16, |
| cpu.shl16, |
| cpu.shr16, |
| cpu.shl16, |
| cpu.sar16 |
| ) |
| }, { |
| sub_op_write( |
| v32s, 1, |
| cpu.rol32, |
| cpu.ror32, |
| cpu.rcl32, |
| cpu.rcr32, |
| cpu.shl32, |
| cpu.shr32, |
| cpu.shl32, |
| cpu.sar32 |
| ) |
| }); |
| |
| opm(0xD2, { |
| sub_op_write( |
| 8, cpu.reg8[reg_cl] & 31, |
| cpu.rol8, |
| cpu.ror8, |
| cpu.rcl8, |
| cpu.rcr8, |
| cpu.shl8, |
| cpu.shr8, |
| cpu.shl8, |
| cpu.sar8 |
| ) |
| }); |
| opm2(0xD3, { |
| sub_op_write( |
| v16, cpu.reg8[reg_cl] & 31, |
| cpu.rol16, |
| cpu.ror16, |
| cpu.rcl16, |
| cpu.rcr16, |
| cpu.shl16, |
| cpu.shr16, |
| cpu.shl16, |
| cpu.sar16 |
| ) |
| }, { |
| sub_op_write( |
| v32s, cpu.reg8[reg_cl] & 31, |
| cpu.rol32, |
| cpu.ror32, |
| cpu.rcl32, |
| cpu.rcr32, |
| cpu.shl32, |
| cpu.shr32, |
| cpu.shl32, |
| cpu.sar32 |
| ) |
| }); |
| |
| op(0xD4, { |
| cpu.bcd_aam(); |
| }); |
| op(0xD5, { |
| cpu.bcd_aad(); |
| }); |
| |
| op(0xD6, { |
| // salc |
| cpu.reg8[reg_al] = -cpu.getcf(); |
| }); |
| op(0xD7, { |
| // xlat |
| if(cpu.address_size_32) |
| { |
| cpu.reg8[reg_al] = cpu.safe_read8(cpu.get_seg_prefix(reg_ds) + cpu.reg32s[reg_ebx] + cpu.reg8[reg_al]); |
| } |
| else |
| { |
| cpu.reg8[reg_al] = cpu.safe_read8(cpu.get_seg_prefix(reg_ds) + cpu.reg16[reg_bx] + cpu.reg8[reg_al]); |
| } |
| }); |
| |
| |
| // fpu instructions |
| #define fpu_op(n, op)\ |
| opm(n, { \ |
| if(cpu.cr0 & (CR0_EM | CR0_TS))\ |
| cpu.trigger_nm();\ |
| if(modrm_byte < 0xC0)\ |
| cpu.fpu.op_ ## op ## _mem(modrm_byte, cpu.modrm_resolve(modrm_byte));\ |
| else\ |
| cpu.fpu.op_ ## op ## _reg(modrm_byte);\ |
| }) |
| |
| fpu_op(0xD8, D8); |
| fpu_op(0xD9, D9); |
| fpu_op(0xDA, DA); |
| fpu_op(0xDB, DB); |
| fpu_op(0xDC, DC); |
| fpu_op(0xDD, DD); |
| fpu_op(0xDE, DE); |
| fpu_op(0xDF, DF); |
| |
| #undef fpu_op |
| |
| |
| op(0xE0, { cpu.loopne(); }); |
| op(0xE1, { cpu.loope(); }); |
| op(0xE2, { cpu.loop(); }); |
| op(0xE3, { cpu.jcxz(); }); |
| |
| op(0xE4, { |
| var port = cpu.read_imm8(); |
| cpu.test_privileges_for_io(port, 1); |
| cpu.reg8[reg_al] = cpu.io.port_read8(port); |
| }); |
| op2(0xE5, { |
| var port = cpu.read_imm8(); |
| cpu.test_privileges_for_io(port, 2); |
| cpu.reg16[reg_ax] = cpu.io.port_read16(port); |
| }, { |
| var port = cpu.read_imm8(); |
| cpu.test_privileges_for_io(port, 4); |
| cpu.reg32s[reg_eax] = cpu.io.port_read32(port); |
| }); |
| op(0xE6, { |
| var port = cpu.read_imm8(); |
| cpu.test_privileges_for_io(port, 1); |
| cpu.io.port_write8(port, cpu.reg8[reg_al]); |
| }); |
| op2(0xE7, { |
| var port = cpu.read_imm8(); |
| cpu.test_privileges_for_io(port, 2); |
| cpu.io.port_write16(port, cpu.reg16[reg_ax]); |
| }, { |
| var port = cpu.read_imm8(); |
| cpu.test_privileges_for_io(port, 4); |
| cpu.io.port_write32(port, cpu.reg32s[reg_eax]); |
| }); |
| |
| op2(0xE8, { |
| // call |
| var imm16s = cpu.read_imm16s(); |
| cpu.push16(cpu.get_real_eip()); |
| |
| cpu.jmp_rel16(imm16s); |
| cpu.last_instr_jump = true; |
| }, { |
| // call |
| var imm32s = cpu.read_imm32s(); |
| cpu.push32(cpu.get_real_eip()); |
| |
| cpu.instruction_pointer = cpu.instruction_pointer + imm32s | 0; |
| cpu.last_instr_jump = true; |
| }); |
| op2(0xE9, { |
| // jmp |
| var imm16s = cpu.read_imm16s(); |
| cpu.jmp_rel16(imm16s); |
| cpu.last_instr_jump = true; |
| }, { |
| // jmp |
| var imm32s = cpu.read_imm32s(); |
| cpu.instruction_pointer = cpu.instruction_pointer + imm32s | 0; |
| cpu.last_instr_jump = true; |
| }); |
| op2(0xEA, { |
| // jmpf |
| var ip = cpu.read_imm16(); |
| cpu.switch_seg(reg_cs, cpu.read_imm16()); |
| |
| cpu.instruction_pointer = ip + cpu.get_seg(reg_cs) | 0; |
| cpu.last_instr_jump = true; |
| }, { |
| // jmpf |
| var ip = cpu.read_imm32s(); |
| cpu.switch_seg(reg_cs, cpu.read_imm16()); |
| |
| cpu.instruction_pointer = ip + cpu.get_seg(reg_cs) | 0; |
| cpu.last_instr_jump = true; |
| }); |
| op(0xEB, { |
| // jmp near |
| var imm8 = cpu.read_imm8s(); |
| cpu.instruction_pointer = cpu.instruction_pointer + imm8 | 0; |
| |
| cpu.last_instr_jump = true; |
| }); |
| |
| op(0xEC, { |
| var port = cpu.reg16[reg_dx]; |
| cpu.test_privileges_for_io(port, 1); |
| cpu.reg8[reg_al] = cpu.io.port_read8(port); |
| }); |
| op2(0xED, { |
| var port = cpu.reg16[reg_dx]; |
| cpu.test_privileges_for_io(port, 2); |
| cpu.reg16[reg_ax] = cpu.io.port_read16(port); |
| }, { |
| var port = cpu.reg16[reg_dx]; |
| cpu.test_privileges_for_io(port, 4); |
| cpu.reg32s[reg_eax] = cpu.io.port_read32(port); |
| }); |
| op(0xEE, { |
| var port = cpu.reg16[reg_dx]; |
| cpu.test_privileges_for_io(port, 1); |
| cpu.io.port_write8(port, cpu.reg8[reg_al]); |
| }); |
| op2(0xEF, { |
| var port = cpu.reg16[reg_dx]; |
| cpu.test_privileges_for_io(port, 2); |
| cpu.io.port_write16(port, cpu.reg16[reg_ax]); |
| }, { |
| var port = cpu.reg16[reg_dx]; |
| cpu.test_privileges_for_io(port, 4); |
| cpu.io.port_write32(port, cpu.reg32s[reg_eax]); |
| }); |
| |
| op(0xF0, { |
| // lock |
| |
| // TODO |
| // This triggers UD when used with |
| // some instructions that don't write to memory |
| cpu.do_op(); |
| }); |
| op(0xF1, { |
| // INT1 |
| // https://code.google.com/p/corkami/wiki/x86oddities#IceBP |
| throw cpu.debug.unimpl("int1 instruction"); |
| }); |
| |
| op(0xF2, { |
| // repnz |
| dbg_assert(cpu.repeat_string_prefix === REPEAT_STRING_PREFIX_NONE); |
| cpu.repeat_string_prefix = REPEAT_STRING_PREFIX_NZ; |
| cpu.do_op(); |
| cpu.repeat_string_prefix = REPEAT_STRING_PREFIX_NONE; |
| }); |
| op(0xF3, { |
| // repz |
| dbg_assert(cpu.repeat_string_prefix === REPEAT_STRING_PREFIX_NONE); |
| cpu.repeat_string_prefix = REPEAT_STRING_PREFIX_Z; |
| cpu.do_op(); |
| cpu.repeat_string_prefix = REPEAT_STRING_PREFIX_NONE; |
| }); |
| |
| op(0xF4, { |
| cpu.hlt_op(); |
| }); |
| |
| op(0xF5, { |
| // cmc |
| cpu.flags = (cpu.flags | 1) ^ cpu.getcf(); |
| cpu.flags_changed &= ~1; |
| }); |
| |
| opm(0xF6, { |
| sub_op( |
| { read_e8; test8(data, cpu.read_imm8()); }, |
| { read_e8; test8(data, cpu.read_imm8()); }, |
| { write_e8(~(data)); }, |
| { write_e8(cpu.neg8(data)); }, |
| { read_e8; cpu.mul8(data); }, |
| { read_e8s; cpu.imul8(data); }, |
| { read_e8; cpu.div8(data); }, |
| { read_e8s; cpu.idiv8(data); } |
| ) |
| }); |
| |
| opm2(0xF7, { |
| sub_op ( |
| { read_e16; test16(data, cpu.read_imm16()); }, |
| { read_e16; test16(data, cpu.read_imm16()); }, |
| { write_ev16(~(data)); }, |
| { write_ev16(cpu.neg16(data)); }, |
| { read_e16; cpu.mul16(data); }, |
| { read_e16s; cpu.imul16(data); }, |
| { read_e16; cpu.div16(data); }, |
| { read_e16s; cpu.idiv16(data); } |
| ) |
| }, { |
| sub_op ( |
| { read_e32s; test32(data, cpu.read_imm32s()); }, |
| { read_e32s; test32(data, cpu.read_imm32s()); }, |
| { write_ev32s(~(data)); }, |
| { write_ev32s(cpu.neg32(data)); }, |
| { read_e32; cpu.mul32(data); }, |
| { read_e32s; cpu.imul32(data); }, |
| { read_e32; cpu.div32(data); }, |
| { read_e32s; cpu.idiv32(data); } |
| ) |
| }); |
| |
| op(0xF8, { |
| // clc |
| cpu.flags &= ~flag_carry; |
| cpu.flags_changed &= ~1; |
| }); |
| op(0xF9, { |
| // stc |
| cpu.flags |= flag_carry; |
| cpu.flags_changed &= ~1; |
| }); |
| |
| op(0xFA, { |
| // cli |
| //dbg_log("interrupts off"); |
| |
| if(!cpu.protected_mode || ((cpu.flags & flag_vm) ? |
| cpu.getiopl() === 3 : cpu.getiopl() >= cpu.cpl)) |
| { |
| cpu.flags &= ~flag_interrupt; |
| } |
| else |
| { |
| if(cpu.getiopl() < 3 && ((cpu.flags & flag_vm) ? |
| (cpu.cr4 & CR4_VME) : |
| (cpu.cpl === 3 && (cpu.cr4 & CR4_PVI)))) |
| { |
| cpu.flags &= ~flag_vif; |
| } |
| else |
| { |
| cpu.trigger_gp(0); |
| } |
| } |
| }); |
| op(0xFB, { |
| // sti |
| //dbg_log("interrupts on"); |
| |
| if(!cpu.protected_mode || ((cpu.flags & flag_vm) ? |
| cpu.getiopl() === 3 : cpu.getiopl() >= cpu.cpl)) |
| { |
| cpu.flags |= flag_interrupt; |
| |
| //cpu.table[cpu.read_imm8()](cpu); |
| cpu.cycle(); |
| |
| cpu.handle_irqs(); |
| } |
| else |
| { |
| if(cpu.getiopl() < 3 && (cpu.flags & flag_vip) === 0 && ((cpu.flags & flag_vm) ? |
| (cpu.cr4 & CR4_VME) : |
| (cpu.cpl === 3 && (cpu.cr4 & CR4_PVI)))) |
| { |
| cpu.flags |= flag_vif; |
| } |
| else |
| { |
| cpu.trigger_gp(0); |
| } |
| } |
| |
| }); |
| |
| op(0xFC, { |
| // cld |
| cpu.flags &= ~flag_direction; |
| }); |
| op(0xFD, { |
| // std |
| cpu.flags |= flag_direction; |
| }); |
| |
| opm(0xFE, { |
| var mod = modrm_byte & 56; |
| |
| if(mod === 0) |
| { |
| write_e8(inc8(data)); |
| } |
| else if(mod === 8) |
| { |
| write_e8(dec8(data)); |
| } |
| else |
| { |
| todo(); |
| } |
| }); |
| opm2(0xFF, { |
| sub_op( |
| { write_ev16(inc16(data)); }, |
| { write_ev16(dec16(data)); }, |
| { |
| // 2, call near |
| read_e16; |
| cpu.push16(cpu.get_real_eip()); |
| |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + data | 0; |
| cpu.last_instr_jump = true; |
| }, |
| { |
| // 3, callf |
| if(modrm_byte >= 0xC0) |
| { |
| cpu.trigger_ud(); |
| dbg_assert(false); |
| } |
| |
| var virt_addr = cpu.modrm_resolve(modrm_byte); |
| var new_cs = cpu.safe_read16(virt_addr + 2); |
| var new_ip = cpu.safe_read16(virt_addr); |
| |
| cpu.writable_or_pagefault(cpu.get_stack_pointer(-4), 4); |
| cpu.push16(cpu.sreg[reg_cs]); |
| cpu.push16(cpu.get_real_eip()); |
| |
| cpu.switch_seg(reg_cs, new_cs); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + new_ip | 0; |
| cpu.last_instr_jump = true; |
| }, |
| { |
| // 4, jmp near |
| read_e16; |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + data | 0; |
| cpu.last_instr_jump = true; |
| }, |
| { |
| // 5, jmpf |
| if(modrm_byte >= 0xC0) |
| { |
| cpu.trigger_ud(); |
| dbg_assert(false); |
| } |
| |
| var virt_addr = cpu.modrm_resolve(modrm_byte); |
| var new_cs = cpu.safe_read16(virt_addr + 2); |
| var new_ip = cpu.safe_read16(virt_addr); |
| |
| cpu.switch_seg(reg_cs, new_cs); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + new_ip | 0; |
| cpu.last_instr_jump = true; |
| }, |
| { |
| // 6, push |
| read_e16; |
| cpu.push16(data); |
| }, |
| { |
| todo(); |
| } |
| ) |
| }, { |
| sub_op( |
| { write_ev32s(inc32(data)); }, |
| { write_ev32s(dec32(data)); }, |
| { |
| // 2, call near |
| read_e32s; |
| cpu.push32(cpu.get_real_eip()); |
| |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + data | 0; |
| cpu.last_instr_jump = true; |
| }, |
| { |
| // 3, callf |
| if(modrm_byte >= 0xC0) |
| { |
| cpu.trigger_ud(); |
| dbg_assert(false); |
| } |
| |
| var virt_addr = cpu.modrm_resolve(modrm_byte); |
| var new_cs = cpu.safe_read16(virt_addr + 4); |
| var new_ip = cpu.safe_read32s(virt_addr); |
| |
| cpu.writable_or_pagefault(cpu.get_stack_pointer(-8), 8); |
| cpu.push32(cpu.sreg[reg_cs]); |
| cpu.push32(cpu.get_real_eip()); |
| |
| cpu.switch_seg(reg_cs, new_cs); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + new_ip | 0; |
| cpu.last_instr_jump = true; |
| }, |
| { |
| // 4, jmp near |
| read_e32s; |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + data | 0; |
| cpu.last_instr_jump = true; |
| }, |
| { |
| // 5, jmpf |
| if(modrm_byte >= 0xC0) |
| { |
| cpu.trigger_ud(); |
| dbg_assert(false); |
| } |
| |
| var virt_addr = cpu.modrm_resolve(modrm_byte); |
| var new_cs = cpu.safe_read16(virt_addr + 4); |
| var new_ip = cpu.safe_read32s(virt_addr); |
| |
| cpu.switch_seg(reg_cs, new_cs); |
| cpu.instruction_pointer = cpu.get_seg(reg_cs) + new_ip | 0; |
| cpu.last_instr_jump = true; |
| }, |
| { |
| // push |
| read_e32s; |
| cpu.push32(data); |
| }, |
| { |
| todo(); |
| } |
| ) |
| }); |
| |
| |
| // 0F ops start here |
| #define table16 table0F_16 |
| #define table32 table0F_32 |
| |
| opm(0x00, { |
| if(!cpu.protected_mode) |
| { |
| // No GP, UD is correct here |
| cpu.trigger_ud(); |
| } |
| |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| |
| switch(modrm_byte >> 3 & 7) |
| { |
| case 0: |
| // sldt |
| set_ev16(cpu.sreg[reg_ldtr]); |
| break; |
| case 1: |
| // str |
| set_ev16(cpu.sreg[reg_tr]); |
| break; |
| case 2: |
| // lldt |
| read_e16; |
| cpu.load_ldt(data); |
| break; |
| case 3: |
| // ltr |
| read_e16; |
| cpu.load_tr(data); |
| break; |
| default: |
| dbg_log(modrm_byte >> 3 & 7, LOG_CPU); |
| todo(); |
| } |
| }); |
| |
| opm(0x01, { |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| var mod = modrm_byte >> 3 & 7; |
| |
| if(mod === 4) |
| { |
| // smsw |
| set_ev16(cpu.cr0); |
| return; |
| } |
| else if(mod === 6) |
| { |
| // lmsw |
| read_e16; |
| |
| var old_cr0 = cpu.cr0; |
| cpu.cr0 = (cpu.cr0 & ~0xF) | (data & 0xF); |
| |
| if(cpu.protected_mode) |
| { |
| // lmsw cannot be used to switch back |
| cpu.cr0 |= CR0_PE; |
| } |
| |
| //dbg_log("cr0=" + h(data >>> 0), LOG_CPU); |
| cpu.cr0_changed(old_cr0); |
| return; |
| } |
| |
| if(modrm_byte >= 0xC0) |
| { |
| // only memory |
| cpu.trigger_ud(); |
| dbg_assert(false); |
| } |
| |
| if((mod === 2 || mod === 3) && cpu.protected_mode) |
| { |
| // override prefix, so cpu.modrm_resolve does not return the segment part |
| // only lgdt and lidt and only in protected mode |
| cpu.segment_prefix = SEG_PREFIX_ZERO; |
| } |
| |
| var addr = cpu.modrm_resolve(modrm_byte); |
| cpu.segment_prefix = SEG_PREFIX_NONE; |
| |
| switch(mod) |
| { |
| case 0: |
| // sgdt |
| cpu.writable_or_pagefault(addr, 6); |
| cpu.safe_write16(addr, cpu.gdtr_size); |
| cpu.safe_write32(addr + 2, cpu.gdtr_offset); |
| break; |
| case 1: |
| // sidt |
| cpu.writable_or_pagefault(addr, 6); |
| cpu.safe_write16(addr, cpu.idtr_size); |
| cpu.safe_write32(addr + 2, cpu.idtr_offset); |
| break; |
| case 2: |
| // lgdt |
| var size = cpu.safe_read16(addr); |
| var offset = cpu.safe_read32s(addr + 2); |
| |
| cpu.gdtr_size = size; |
| cpu.gdtr_offset = offset; |
| |
| if(!cpu.operand_size_32) |
| { |
| cpu.gdtr_offset &= 0xFFFFFF; |
| } |
| |
| //dbg_log("gdt at " + h(cpu.gdtr_offset) + ", " + cpu.gdtr_size + " bytes", LOG_CPU); |
| //dump_gdt_ldt(); |
| break; |
| case 3: |
| // lidt |
| var size = cpu.safe_read16(addr); |
| var offset = cpu.safe_read32s(addr + 2); |
| |
| cpu.idtr_size = size; |
| cpu.idtr_offset = offset; |
| |
| if(!cpu.operand_size_32) |
| { |
| cpu.idtr_offset &= 0xFFFFFF; |
| } |
| |
| //dbg_log("[" + h(cpu.instruction_pointer) + "] idt at " + |
| // h(idtr_offset) + ", " + cpu.idtr_size + " bytes " + h(addr), LOG_CPU); |
| break; |
| case 7: |
| // flush translation lookaside buffer |
| cpu.invlpg(addr); |
| break; |
| default: |
| dbg_log(mod); |
| todo(); |
| } |
| }); |
| |
| opm(0x02, { |
| // lar |
| todo(); |
| }); |
| |
| opm(0x03, { |
| // lsl |
| todo(); |
| }); |
| |
| undefined_instruction(0x04); |
| undefined_instruction(0x05); |
| |
| op(0x06, { |
| // clts |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| else |
| { |
| //dbg_log("clts", LOG_CPU); |
| cpu.cr0 &= ~CR0_TS; |
| // do something here ? |
| } |
| }); |
| |
| undefined_instruction(0x07); |
| op(0x08, { |
| // invd |
| todo(); |
| }) |
| |
| op(0x09, { |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| // wbinvd |
| }); |
| |
| |
| undefined_instruction(0x0A); |
| op(0x0B, { |
| // UD2 |
| cpu.trigger_ud(); |
| }); |
| undefined_instruction(0x0C); |
| |
| op(0x0D, { |
| // nop |
| todo(); |
| }) |
| |
| undefined_instruction(0x0E); |
| undefined_instruction(0x0F); |
| |
| |
| unimplemented_sse(0x10); |
| unimplemented_sse(0x11); |
| unimplemented_sse(0x12); |
| unimplemented_sse(0x13); |
| unimplemented_sse(0x14); |
| unimplemented_sse(0x15); |
| unimplemented_sse(0x16); |
| unimplemented_sse(0x17); |
| |
| opm(0x18, { |
| // prefetch |
| // nop for us |
| if(modrm_byte < 0xC0) |
| cpu.modrm_resolve(modrm_byte); |
| }); |
| |
| unimplemented_sse(0x19); |
| unimplemented_sse(0x1A); |
| unimplemented_sse(0x1B); |
| unimplemented_sse(0x1C); |
| unimplemented_sse(0x1D); |
| unimplemented_sse(0x1E); |
| unimplemented_sse(0x1F); |
| |
| |
| opm(0x20, { |
| |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| //dbg_log("cr" + mod + " read", LOG_CPU); |
| |
| // mov addr, cr |
| // mod = which control register |
| switch(modrm_byte >> 3 & 7) |
| { |
| case 0: |
| reg_e32s = cpu.cr0; |
| break; |
| case 2: |
| reg_e32s = cpu.cr2; |
| break; |
| case 3: |
| //dbg_log("read cr3 (" + h(cpu.cr3, 8) + ")", LOG_CPU); |
| reg_e32s = cpu.cr3; |
| break; |
| case 4: |
| reg_e32s = cpu.cr4; |
| break; |
| default: |
| dbg_log(modrm_byte >> 3 & 7); |
| todo(); |
| } |
| }); |
| |
| opm(0x21, { |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| // TODO: mov from debug register |
| dbg_assert(modrm_byte >= 0xC0); |
| |
| cpu.reg32s[modrm_byte & 7] = cpu.dreg[modrm_byte >> 3 & 7]; |
| |
| //dbg_log("read dr" + (modrm_byte >> 3 & 7) + ": " + h(cpu.reg32[modrm_byte & 7]), LOG_CPU); |
| }); |
| |
| opm(0x22, { |
| |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| var data = reg_e32s; |
| //dbg_log("cr" + mod + " written: " + h(cpu.reg32[reg]), LOG_CPU); |
| |
| // mov cr, addr |
| // mod = which control register |
| switch(modrm_byte >> 3 & 7) |
| { |
| case 0: |
| var old_cr0 = cpu.cr0; |
| cpu.cr0 = data; |
| |
| if((cpu.cr0 & (CR0_PE | CR0_PG)) === CR0_PG) |
| { |
| // cannot load PG without PE |
| throw cpu.debug.unimpl("#GP handler"); |
| } |
| |
| cpu.cr0_changed(old_cr0); |
| //dbg_log("cr0=" + h(data >>> 0), LOG_CPU); |
| break; |
| |
| case 2: |
| cpu.cr2 = data; |
| //dbg_log("cr2=" + h(data >>> 0), LOG_CPU); |
| break; |
| |
| case 3: |
| //dbg_log("cr3=" + h(data >>> 0), LOG_CPU); |
| cpu.cr3 = data; |
| dbg_assert((cpu.cr3 & 0xFFF) === 0); |
| cpu.clear_tlb(); |
| |
| //dump_page_directory(); |
| //dbg_log("page directory loaded at " + h(cpu.cr3 >>> 0, 8), LOG_CPU); |
| break; |
| |
| case 4: |
| if(data & (1 << 11 | 1 << 12 | 1 << 15 | 1 << 16 | 1 << 19 | 0xFFC00000)) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| if((cpu.cr4 ^ data) & CR4_PGE) |
| { |
| if(data & CR4_PGE) |
| { |
| // The PGE bit has been enabled. The global TLB is |
| // still empty, so we only have to copy it over |
| cpu.clear_tlb(); |
| } |
| else |
| { |
| // Clear the global TLB |
| cpu.full_clear_tlb(); |
| } |
| } |
| |
| cpu.cr4 = data; |
| cpu.page_size_extensions = (cpu.cr4 & CR4_PSE) ? PSE_ENABLED : 0; |
| |
| if(cpu.cr4 & CR4_PAE) |
| { |
| throw cpu.debug.unimpl("PAE"); |
| } |
| |
| dbg_log("cr4=" + h(cpu.cr4 >>> 0), LOG_CPU); |
| break; |
| |
| default: |
| dbg_log(modrm_byte >> 3 & 7); |
| todo(); |
| } |
| }); |
| opm(0x23, { |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| // TODO: mov to debug register |
| dbg_assert(modrm_byte >= 0xC0); |
| //dbg_log("write dr" + (modrm_byte >> 3 & 7) + ": " + h(cpu.reg32[modrm_byte & 7]), LOG_CPU); |
| |
| cpu.dreg[modrm_byte >> 3 & 7] = reg_e32s; |
| }); |
| |
| undefined_instruction(0x24); |
| undefined_instruction(0x25); |
| undefined_instruction(0x26); |
| undefined_instruction(0x27); |
| |
| unimplemented_sse(0x28); |
| unimplemented_sse(0x29); |
| unimplemented_sse(0x2A); |
| unimplemented_sse(0x2B); |
| unimplemented_sse(0x2C); |
| unimplemented_sse(0x2D); |
| unimplemented_sse(0x2E); |
| unimplemented_sse(0x2F); |
| |
| // wrmsr |
| op(0x30, { |
| // wrmsr - write maschine specific register |
| |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| var index = cpu.reg32s[reg_ecx]; |
| var low = cpu.reg32s[reg_eax]; |
| var high = cpu.reg32s[reg_edx]; |
| |
| dbg_log("wrmsr ecx=" + h(index >>> 0, 8) + |
| " data=" + h(high >>> 0, 8) + ":" + h(low >>> 0, 8), LOG_CPU); |
| |
| switch(index) |
| { |
| case IA32_SYSENTER_CS: |
| cpu.sysenter_cs = low & 0xFFFF; |
| break; |
| |
| case IA32_SYSENTER_EIP: |
| cpu.sysenter_eip = low; |
| break; |
| |
| case IA32_SYSENTER_ESP: |
| cpu.sysenter_esp = low; |
| break; |
| } |
| }); |
| |
| op(0x31, { |
| // rdtsc - read timestamp counter |
| |
| if(!cpu.cpl || !(cpu.cr4 & CR4_TSD)) |
| { |
| var n = v86.microtick() - cpu.tsc_offset; |
| dbg_assert(isFinite(n)); |
| |
| cpu.reg32s[reg_eax] = n * TSC_RATE; |
| cpu.reg32s[reg_edx] = n * (TSC_RATE / 0x100000000); |
| |
| //dbg_log("rtdsc edx:eax=" + h(cpu.reg32[reg_edx], 8) + ":" + h(cpu.reg32[reg_eax], 8), LOG_CPU); |
| } |
| else |
| { |
| cpu.trigger_gp(0); |
| } |
| }); |
| |
| op(0x32, { |
| // rdmsr - read maschine specific register |
| |
| if(cpu.cpl) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| var index = cpu.reg32s[reg_ecx]; |
| |
| dbg_log("rdmsr ecx=" + h(index >>> 0, 8), LOG_CPU); |
| |
| var low = 0; |
| var high = 0; |
| |
| switch(index) |
| { |
| case IA32_SYSENTER_CS: |
| low = cpu.sysenter_cs; |
| break; |
| |
| case IA32_SYSENTER_EIP: |
| low = cpu.sysenter_eip; |
| break; |
| |
| case IA32_SYSENTER_ESP: |
| low = cpu.sysenter_esp; |
| break; |
| } |
| |
| cpu.reg32s[reg_eax] = low; |
| cpu.reg32s[reg_edx] = high; |
| }); |
| |
| op(0x33, { |
| // rdpmc |
| todo(); |
| }) |
| |
| op(0x34, { |
| // sysenter |
| var seg = cpu.sysenter_cs & 0xFFFC; |
| |
| if(!cpu.protected_mode || seg === 0) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| //dbg_log("sysenter cs:eip=" + h(seg , 4) + ":" + h(cpu.sysenter_eip >>> 0, 8) + |
| // " ss:esp=" + h(seg + 8, 4) + ":" + h(cpu.sysenter_esp >>> 0, 8), LOG_CPU); |
| |
| cpu.flags &= ~flag_vm & ~flag_interrupt; |
| |
| cpu.instruction_pointer = cpu.sysenter_eip; |
| cpu.reg32s[reg_esp] = cpu.sysenter_esp; |
| |
| cpu.sreg[reg_cs] = seg; |
| cpu.segment_is_null[reg_cs] = 0; |
| cpu.segment_limits[reg_cs] = -1; |
| cpu.segment_offsets[reg_cs] = 0; |
| |
| if(!cpu.is_32) |
| cpu.update_cs_size(true); |
| |
| cpu.cpl = 0; |
| cpu.cpl_changed(); |
| |
| cpu.sreg[reg_ss] = seg + 8; |
| cpu.segment_is_null[reg_ss] = 0; |
| cpu.segment_limits[reg_ss] = -1; |
| cpu.segment_offsets[reg_ss] = 0; |
| |
| cpu.stack_size_32 = true; |
| cpu.stack_reg = cpu.reg32s; |
| cpu.reg_vsp = reg_esp; |
| cpu.reg_vbp = reg_ebp; |
| }); |
| |
| op(0x35, { |
| // sysexit |
| var seg = cpu.sysenter_cs & 0xFFFC; |
| |
| if(!cpu.protected_mode || cpu.cpl || seg === 0) |
| { |
| cpu.trigger_gp(0); |
| } |
| |
| //dbg_log("sysexit cs:eip=" + h(seg + 16, 4) + ":" + h(cpu.reg32s[reg_edx] >>> 0, 8) + |
| // " ss:esp=" + h(seg + 24, 4) + ":" + h(cpu.reg32s[reg_ecx] >>> 0, 8), LOG_CPU); |
| |
| cpu.instruction_pointer = cpu.reg32s[reg_edx]; |
| cpu.reg32s[reg_esp] = cpu.reg32s[reg_ecx]; |
| |
| cpu.sreg[reg_cs] = seg + 16 | 3; |
| |
| cpu.segment_is_null[reg_cs] = 0; |
| cpu.segment_limits[reg_cs] = -1; |
| cpu.segment_offsets[reg_cs] = 0; |
| |
| if(!cpu.is_32) |
| cpu.update_cs_size(true); |
| |
| cpu.cpl = 3; |
| cpu.cpl_changed(); |
| |
| cpu.sreg[reg_ss] = seg + 24 | 3; |
| cpu.segment_is_null[reg_ss] = 0; |
| cpu.segment_limits[reg_ss] = -1; |
| cpu.segment_offsets[reg_ss] = 0; |
| |
| cpu.stack_size_32 = true; |
| cpu.stack_reg = cpu.reg32s; |
| cpu.reg_vsp = reg_esp; |
| cpu.reg_vbp = reg_ebp; |
| }); |
| |
| undefined_instruction(0x36); |
| |
| op(0x37, { |
| // getsec |
| todo(); |
| }) |
| |
| unimplemented_sse(0x38); |
| unimplemented_sse(0x39); |
| unimplemented_sse(0x3A); |
| unimplemented_sse(0x3B); |
| unimplemented_sse(0x3C); |
| unimplemented_sse(0x3D); |
| unimplemented_sse(0x3E); |
| unimplemented_sse(0x3F); |
| |
| |
| // cmov |
| #define group0F40(n, test)\ |
| opm2(0x40 | n, {\ |
| read_e16;\ |
| if(test) {\ |
| reg_g16 = data;\ |
| }\ |
| }, {\ |
| read_e32s;\ |
| if(test) {\ |
| reg_g32s = data;\ |
| }\ |
| }); |
| |
| each_jcc(group0F40); |
| #undef group0F40 |
| |
| |
| unimplemented_sse(0x50); |
| unimplemented_sse(0x51); |
| unimplemented_sse(0x52); |
| unimplemented_sse(0x53); |
| unimplemented_sse(0x54); |
| unimplemented_sse(0x55); |
| unimplemented_sse(0x56); |
| unimplemented_sse(0x57); |
| |
| unimplemented_sse(0x58); |
| unimplemented_sse(0x59); |
| unimplemented_sse(0x5A); |
| unimplemented_sse(0x5B); |
| unimplemented_sse(0x5C); |
| unimplemented_sse(0x5D); |
| unimplemented_sse(0x5E); |
| unimplemented_sse(0x5F); |
| |
| unimplemented_sse(0x60); |
| unimplemented_sse(0x61); |
| unimplemented_sse(0x62); |
| unimplemented_sse(0x63); |
| unimplemented_sse(0x64); |
| unimplemented_sse(0x65); |
| unimplemented_sse(0x66); |
| unimplemented_sse(0x67); |
| |
| unimplemented_sse(0x68); |
| unimplemented_sse(0x69); |
| unimplemented_sse(0x6A); |
| unimplemented_sse(0x6B); |
| unimplemented_sse(0x6C); |
| unimplemented_sse(0x6D); |
| unimplemented_sse(0x6E); |
| unimplemented_sse(0x6F); |
| |
| unimplemented_sse(0x70); |
| unimplemented_sse(0x71); |
| unimplemented_sse(0x72); |
| unimplemented_sse(0x73); |
| unimplemented_sse(0x74); |
| unimplemented_sse(0x75); |
| unimplemented_sse(0x76); |
| unimplemented_sse(0x77); |
| |
| unimplemented_sse(0x78); |
| unimplemented_sse(0x79); |
| unimplemented_sse(0x7A); |
| unimplemented_sse(0x7B); |
| unimplemented_sse(0x7C); |
| unimplemented_sse(0x7D); |
| unimplemented_sse(0x7E); |
| unimplemented_sse(0x7F); |
| |
| |
| #define group0F80(n, test) op2(0x80 | n, { cpu.jmpcc16(test); }, { cpu.jmpcc32(test); }) |
| each_jcc(group0F80) |
| #undef group0F80 |
| |
| |
| #define group0F90(n, test) opm(0x90 | n, { set_eb(!test ^ 1); }); |
| each_jcc(group0F90); |
| #undef group0F90 |
| |
| |
| op2(0xA0, { cpu.push16(cpu.sreg[reg_fs]); }, { cpu.push32(cpu.sreg[reg_fs]); }); |
| pop_sreg_op(0xA1, reg_fs); |
| |
| op(0xA2, { cpu.cpuid(); }); |
| |
| opm2(0xA3, { |
| if(modrm_byte < 0xC0) |
| { |
| cpu.bt_mem(cpu.modrm_resolve(modrm_byte), reg_g16s); |
| } |
| else |
| { |
| cpu.bt_reg(reg_e16, reg_g16 & 15); |
| } |
| }, { |
| if(modrm_byte < 0xC0) |
| { |
| cpu.bt_mem(cpu.modrm_resolve(modrm_byte), reg_g32s); |
| } |
| else |
| { |
| cpu.bt_reg(reg_e32s, reg_g32s & 31); |
| } |
| }); |
| |
| opm2(0xA4, { |
| write_ev16(cpu.shld16(data, reg_g16, cpu.read_imm8() & 31)); |
| }, { |
| write_ev32s(cpu.shld32(data, reg_g32s, cpu.read_imm8() & 31)); |
| }); |
| opm2(0xA5, { |
| write_ev16(cpu.shld16(data, reg_g16, cpu.reg8[reg_cl] & 31)); |
| }, { |
| write_ev32s(cpu.shld32(data, reg_g32s, cpu.reg8[reg_cl] & 31)); |
| }); |
| |
| undefined_instruction(0xA6); |
| undefined_instruction(0xA7); |
| |
| op2(0xA8, { cpu.push16(cpu.sreg[reg_gs]); }, { cpu.push32(cpu.sreg[reg_gs]); }); |
| pop_sreg_op(0xA9, reg_gs); |
| |
| op(0xAA, { |
| // rsm |
| todo(); |
| }) |
| |
| opm2(0xAB, { |
| bt_op16(bts, reg_g16s); |
| }, { |
| bt_op32(bts, reg_g32s); |
| }); |
| |
| |
| opm2(0xAC, { |
| write_ev16(cpu.shrd16(data, reg_g16, cpu.read_imm8() & 31)); |
| }, { |
| write_ev32s(cpu.shrd32(data, reg_g32s, cpu.read_imm8() & 31)); |
| }); |
| opm2(0xAD, { |
| write_ev16(cpu.shrd16(data, reg_g16, cpu.reg8[reg_cl] & 31)); |
| }, { |
| write_ev32s(cpu.shrd32(data, reg_g32s, cpu.reg8[reg_cl] & 31)); |
| }); |
| |
| opm(0xAE, { |
| // fxsave, fxrstor, ldmxcsr ... |
| |
| switch(modrm_byte >> 3 & 7) |
| { |
| case 6: |
| // mfence |
| break; |
| default: |
| dbg_log("missing " + (modrm_byte >> 3 & 7), LOG_CPU); |
| todo(); |
| } |
| }) |
| |
| opm2(0xAF, { |
| read_e16s; |
| reg_g16 = cpu.imul_reg16(reg_g16s, data); |
| }, { |
| read_e32s; |
| reg_g32s = cpu.imul_reg32(reg_g32s, data); |
| }); |
| |
| |
| opm(0xB0, { |
| // cmpxchg8 |
| if(modrm_byte < 0xC0) |
| { |
| var virt_addr = cpu.modrm_resolve(modrm_byte); |
| cpu.writable_or_pagefault(virt_addr, 1); |
| |
| var data = cpu.safe_read8(virt_addr); |
| } |
| else |
| data = reg_e8; |
| |
| |
| cmp8(data, cpu.reg8[reg_al]); |
| |
| if(cpu.getzf()) |
| { |
| if(modrm_byte < 0xC0) |
| cpu.safe_write8(virt_addr, reg_g8); |
| else |
| reg_e8 = reg_g8; |
| } |
| else |
| { |
| cpu.reg8[reg_al] = data; |
| } |
| }); |
| opm2(0xB1, { |
| // cmpxchg16/32 |
| if(modrm_byte < 0xC0) |
| { |
| var virt_addr = cpu.modrm_resolve(modrm_byte); |
| cpu.writable_or_pagefault(virt_addr, 2); |
| |
| var data = cpu.safe_read16(virt_addr); |
| } |
| else |
| data = reg_e16; |
| |
| cmp16(data, cpu.reg16[reg_ax]); |
| |
| if(cpu.getzf()) |
| { |
| if(modrm_byte < 0xC0) |
| cpu.safe_write16(virt_addr, reg_g16); |
| else |
| reg_e16 = reg_g16; |
| } |
| else |
| { |
| cpu.reg16[reg_ax] = data; |
| } |
| }, { |
| if(modrm_byte < 0xC0) |
| { |
| var virt_addr = cpu.modrm_resolve(modrm_byte); |
| cpu.writable_or_pagefault(virt_addr, 4); |
| |
| var data = cpu.safe_read32s(virt_addr); |
| } |
| else |
| { |
| data = reg_e32s; |
| } |
| |
| cmp32(data, cpu.reg32s[reg_eax]); |
| |
| if(cpu.getzf()) |
| { |
| if(modrm_byte < 0xC0) |
| cpu.safe_write32(virt_addr, reg_g32s); |
| else |
| reg_e32s = reg_g32s; |
| } |
| else |
| { |
| cpu.reg32s[reg_eax] = data; |
| } |
| }); |
| |
| // lss |
| opm2(0xB2, { |
| lss_op16(reg_ss); |
| }, { |
| lss_op32(reg_ss); |
| }); |
| |
| opm2(0xB3, { |
| bt_op16(btr, reg_g16s); |
| }, { |
| bt_op32(btr, reg_g32s); |
| }); |
| |
| // lfs, lgs |
| opm2(0xB4, { |
| lss_op16(reg_fs); |
| }, { |
| lss_op32(reg_fs); |
| }); |
| opm2(0xB5, { |
| lss_op16(reg_gs); |
| }, { |
| lss_op32(reg_gs); |
| }); |
| |
| opm2(0xB6, { |
| // movzx |
| read_e8; |
| reg_g16 = data; |
| }, { |
| read_e8; |
| reg_g32s = data; |
| }); |
| |
| opm(0xB7, { |
| // movzx |
| read_e16; |
| reg_g32s = data; |
| }); |
| |
| opm2(0xB8, { |
| // popcnt |
| read_e16; |
| reg_g16 = cpu.popcnt(data); |
| }, { |
| read_e32s; |
| reg_g32s = cpu.popcnt(data); |
| }); |
| |
| op(0xB9, { |
| // UD |
| todo(); |
| }) |
| |
| opm2(0xBA, { |
| //dbg_log("BA " + mod + " " + imm8); |
| |
| switch(modrm_byte >> 3 & 7) |
| { |
| case 4: |
| if(modrm_byte < 0xC0) |
| { |
| cpu.bt_mem(cpu.modrm_resolve(modrm_byte), cpu.read_imm8() & 15); |
| } |
| else |
| { |
| cpu.bt_reg(reg_e16, cpu.read_imm8() & 15); |
| } |
| break; |
| case 5: |
| bt_op16(bts, cpu.read_imm8()); |
| break; |
| case 6: |
| bt_op16(btr, cpu.read_imm8()); |
| break; |
| case 7: |
| bt_op16(btc, cpu.read_imm8()); |
| break; |
| default: |
| dbg_log(modrm_byte >> 3 & 7); |
| todo(); |
| } |
| }, { |
| //dbg_log("BA " + mod + " " + imm8); |
| |
| switch(modrm_byte >> 3 & 7) |
| { |
| case 4: |
| if(modrm_byte < 0xC0) |
| { |
| cpu.bt_mem(cpu.modrm_resolve(modrm_byte), cpu.read_imm8() & 31); |
| } |
| else |
| { |
| cpu.bt_reg(reg_e32s, cpu.read_imm8() & 31); |
| } |
| break; |
| case 5: |
| bt_op32(bts, cpu.read_imm8()); |
| break; |
| case 6: |
| bt_op32(btr, cpu.read_imm8()); |
| break; |
| case 7: |
| bt_op32(btc, cpu.read_imm8()); |
| break; |
| default: |
| dbg_log(modrm_byte >> 3 & 7); |
| todo(); |
| } |
| }); |
| |
| opm2(0xBB, { |
| bt_op16(btc, reg_g16s); |
| }, { |
| bt_op32(btc, reg_g32s); |
| }); |
| |
| opm2(0xBC, { |
| read_e16; |
| reg_g16 = cpu.bsf16(reg_g16, data); |
| }, { |
| read_e32s; |
| reg_g32s = cpu.bsf32(reg_g32s, data); |
| }); |
| |
| opm2(0xBD, { |
| read_e16; |
| reg_g16 = cpu.bsr16(reg_g16, data); |
| }, { |
| read_e32s; |
| reg_g32s = cpu.bsr32(reg_g32s, data); |
| }); |
| |
| opm2(0xBE, { |
| // movsx |
| read_e8s; |
| reg_g16 = data; |
| }, { |
| read_e8s; |
| reg_g32s = data; |
| }); |
| |
| opm(0xBF, { |
| // movsx |
| read_e16s; |
| reg_g32s = data; |
| }); |
| |
| opm(0xC0, { |
| write_e8(cpu.xadd8(data, modrm_byte >> 1 & 0xC | modrm_byte >> 5 & 1)); |
| }); |
| |
| opm2(0xC1, { |
| write_ev16(cpu.xadd16(data, modrm_byte >> 2 & 14)); |
| }, { |
| write_ev32s(cpu.xadd32(data, modrm_byte >> 3 & 7)); |
| }); |
| |
| |
| unimplemented_sse(0xC2); |
| unimplemented_sse(0xC3); |
| unimplemented_sse(0xC4); |
| unimplemented_sse(0xC5); |
| unimplemented_sse(0xC6); |
| |
| opm(0xC7, { |
| // cmpxchg8b |
| if(modrm_byte >= 0xC0) |
| { |
| cpu.trigger_ud(); |
| } |
| |
| var addr = cpu.modrm_resolve(modrm_byte); |
| cpu.writable_or_pagefault(addr, 8); |
| |
| var m64_low = cpu.safe_read32s(addr); |
| var m64_high = cpu.safe_read32s(addr + 4); |
| |
| if(cpu.reg32s[reg_eax] === m64_low && |
| cpu.reg32s[reg_edx] === m64_high) |
| { |
| cpu.flags |= flag_zero; |
| |
| cpu.safe_write32(addr, cpu.reg32s[reg_ebx]); |
| cpu.safe_write32(addr + 4, cpu.reg32s[reg_ecx]); |
| } |
| else |
| { |
| cpu.flags &= ~flag_zero; |
| |
| cpu.reg32s[reg_eax] = m64_low; |
| cpu.reg32s[reg_edx] = m64_high; |
| } |
| |
| cpu.flags_changed &= ~flag_zero; |
| }); |
| |
| op(0xC8, { cpu.bswap(reg_eax); }); |
| op(0xC9, { cpu.bswap(reg_ecx); }); |
| op(0xCA, { cpu.bswap(reg_edx); }); |
| op(0xCB, { cpu.bswap(reg_ebx); }); |
| op(0xCC, { cpu.bswap(reg_esp); }); |
| op(0xCD, { cpu.bswap(reg_ebp); }); |
| op(0xCE, { cpu.bswap(reg_esi); }); |
| op(0xCF, { cpu.bswap(reg_edi); }); |
| |
| unimplemented_sse(0xD0); |
| unimplemented_sse(0xD1); |
| unimplemented_sse(0xD2); |
| unimplemented_sse(0xD3); |
| unimplemented_sse(0xD4); |
| unimplemented_sse(0xD5); |
| unimplemented_sse(0xD6); |
| unimplemented_sse(0xD7); |
| |
| unimplemented_sse(0xD8); |
| unimplemented_sse(0xD9); |
| unimplemented_sse(0xDA); |
| unimplemented_sse(0xDB); |
| unimplemented_sse(0xDC); |
| unimplemented_sse(0xDD); |
| unimplemented_sse(0xDE); |
| unimplemented_sse(0xDF); |
| |
| unimplemented_sse(0xE0); |
| unimplemented_sse(0xE1); |
| unimplemented_sse(0xE2); |
| unimplemented_sse(0xE3); |
| unimplemented_sse(0xE4); |
| unimplemented_sse(0xE5); |
| unimplemented_sse(0xE6); |
| unimplemented_sse(0xE7); |
| |
| unimplemented_sse(0xE8); |
| unimplemented_sse(0xE9); |
| unimplemented_sse(0xEA); |
| unimplemented_sse(0xEB); |
| unimplemented_sse(0xEC); |
| unimplemented_sse(0xED); |
| unimplemented_sse(0xEE); |
| unimplemented_sse(0xEF); |
| |
| unimplemented_sse(0xF0); |
| unimplemented_sse(0xF1); |
| unimplemented_sse(0xF2); |
| unimplemented_sse(0xF3); |
| unimplemented_sse(0xF4); |
| unimplemented_sse(0xF5); |
| unimplemented_sse(0xF6); |
| unimplemented_sse(0xF7); |
| |
| unimplemented_sse(0xF8); |
| unimplemented_sse(0xF9); |
| unimplemented_sse(0xFA); |
| unimplemented_sse(0xFB); |
| unimplemented_sse(0xFC); |
| unimplemented_sse(0xFD); |
| unimplemented_sse(0xFE); |
| |
| // NSA backdoor instruction |
| undefined_instruction(0xFF); |
| |
| |
| #undef table16 |
| #undef table32 |
| |
| #undef reg_e8 |
| #undef reg_e8s |
| #undef reg_g8 |
| #undef reg_e16 |
| #undef reg_e16s |
| #undef reg_g16 |
| #undef reg_g16s |
| #undef reg_e32 |
| #undef reg_e32s |
| #undef reg_g32 |
| #undef reg_g32s |
| |
| #undef op |
| #undef opm |
| #undef op2 |
| #undef opm2 |
| #undef unimplemented_sse |
| #undef undefined_instruction |
| #undef todo |
| |
| #undef each_jcc |
| |
| #undef lss_op16 |
| #undef lss_op32 |
| #undef bt_op16 |
| #undef bt_op32 |
| |
| #undef sub_op_instr |