blob: 3192325f2f5a02c36d8d9388e542463ffc78133a [file] [log] [blame] [raw]
"use strict";
var table16 = [],
table32 = [],
table0F_16 = [],
table0F_32 = [];
#define do_op() table[read_imm8()]()
#define unimplemented_sse(num) op(num, {\
dbg_log("No SSE", LOG_CPU);\
trigger_ud();\
})
#define undefined_instruction(num) op(num, {\
if(DEBUG) throw "Possible fault: undefined instruction"; \
trigger_ud();\
})
#define todo_op(num) op(num, {\
todo();\
})
#define todo()\
if(DEBUG) { dbg_trace(); throw "TODO"; }\
trigger_ud();
#define each_jcc(macro)\
macro(0x0, (test_o()));\
macro(0x1, (!test_o()));\
macro(0x2, (test_b()));\
macro(0x3, (!test_b()));\
macro(0x4, (test_z()));\
macro(0x5, (!test_z()));\
macro(0x6, (test_be()));\
macro(0x7, (!test_be()));\
macro(0x8, (test_s()));\
macro(0x9, (!test_s()));\
macro(0xA, (test_p()));\
macro(0xB, (!test_p()));\
macro(0xC, (test_l()));\
macro(0xD, (!test_l()));\
macro(0xE, (test_le()));\
macro(0xF, (!test_le()));
#define each_reg(macro)\
macro(0, reg_ax, reg_eax)\
macro(1, reg_cx, reg_ecx)\
macro(2, reg_dx, reg_edx)\
macro(3, reg_bx, reg_ebx)\
macro(4, reg_sp, reg_esp)\
macro(5, reg_bp, reg_ebp)\
macro(6, reg_si, reg_esi)\
macro(7, reg_di, reg_edi)
#define each_reg8(macro)\
macro(0, reg_al)\
macro(1, reg_cl)\
macro(2, reg_dl)\
macro(3, reg_bl)\
macro(4, reg_ah)\
macro(5, reg_ch)\
macro(6, reg_dh)\
macro(7, reg_bh)
// no cmp, because it uses different arguments
#define each_arith(macro)\
macro(0, add)\
macro(1, or)\
macro(2, adc)\
macro(3, sbb)\
macro(4, and)\
macro(5, sub)\
macro(6, xor)
#define safe_pop32s(dest) dest = pop32s();
#define safe_pop16(dest) dest = pop16();
// very special, should be somewhere else?
#define lss_op(sreg)\
if(modrm_byte >= 0xC0) { raise_exception(6); return; }\
if(operand_size_32) { lss32(sreg, modrm_resolve(modrm_byte), modrm_byte >> 3 & 7); }\
else { lss16(sreg, modrm_resolve(modrm_byte), modrm_byte >> 2 & 14); }
#define bt_op(op, arg16, arg32)\
if(operand_size_32) {\
if(modrm_byte < 0xC0) {\
op ## _mem(modrm_resolve(modrm_byte), arg32);\
} else {\
reg_e32s = op ## _reg(reg_e32s, arg32 & 31);\
}\
} else {\
if(modrm_byte < 0xC0) {\
op ## _mem(modrm_resolve(modrm_byte), arg16);\
} else {\
reg_e16 = op ## _reg(reg_e16, arg16 & 15);\
}\
}
// 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 }
#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;\
}
// 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, \
{ switch_seg(reg, safe_read16(get_esp_read(0))); stack_reg[reg_vsp] += 2; }, \
{ switch_seg(reg, safe_read16(get_esp_read(0))); stack_reg[reg_vsp] += 4; });
#define reg_e8 reg8[modrm_byte << 2 & 0xC | modrm_byte >> 2 & 1]
#define reg_e8s reg8s[modrm_byte << 2 & 0xC | modrm_byte >> 2 & 1]
#define reg_g8 reg8[modrm_byte >> 1 & 0xC | modrm_byte >> 5 & 1]
#define reg_e16 reg16[modrm_byte << 1 & 14]
#define reg_e16s reg16s[modrm_byte << 1 & 14]
#define reg_g16 reg16[modrm_byte >> 2 & 14]
#define reg_g16s reg16s[modrm_byte >> 2 & 14]
#define reg_e32 reg32[modrm_byte & 7]
#define reg_e32s reg32s[modrm_byte & 7]
#define reg_g32 reg32[modrm_byte >> 3 & 7]
#define reg_g32s reg32s[modrm_byte >> 3 & 7]
#define modrm_read(size)\
if(modrm_byte < 0xC0) {\
var data = safe_read ## size(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 memory or register
// (without reading it beforehand)
#define modrm_set(arg, size) \
if(modrm_byte < 0xC0) {\
safe_write ## size(modrm_resolve(modrm_byte), arg);\
} else {\
reg_e ## size = arg;\
}
#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 memory or register,
// using the previous data from memory or register.
// op is a function call that needs to return the result
#define write_e8(op)\
var data;\
var addr;\
if(modrm_byte < 0xC0) {\
addr = translate_address_write(modrm_resolve(modrm_byte));\
data = memory.read8(addr);\
memory.write8(addr, op);\
} else {\
data = reg_e8;\
reg_e8 = op;\
}
#define write_ev16(op)\
var data;\
var virt_addr;\
var phys_addr;\
var phys_addr_high;\
if(modrm_byte < 0xC0) {\
virt_addr = modrm_resolve(modrm_byte);\
phys_addr = translate_address_write(virt_addr);\
if(paging && (virt_addr & 0xFFF) === 0xFFF) {\
phys_addr_high = translate_address_write(virt_addr + 1);\
data = virt_boundary_read16(phys_addr, phys_addr_high);\
virt_boundary_write16(phys_addr, phys_addr_high, op);\
} else {\
data = memory.read16(phys_addr);\
memory.write16(phys_addr, op);\
}\
} else {\
data = reg_e16;\
reg_e16 = op;\
}
#define write_ev32s(op)\
var data;\
var virt_addr;\
var phys_addr;\
var phys_addr_high;\
if(modrm_byte < 0xC0) {\
virt_addr = modrm_resolve(modrm_byte);\
phys_addr = translate_address_write(virt_addr);\
if(paging && (virt_addr & 0xFFF) >= 0xFFD) {\
phys_addr_high = translate_address_write(virt_addr + 3);\
data = virt_boundary_read32s(phys_addr, phys_addr_high);\
virt_boundary_write32(phys_addr, phys_addr_high, op);\
} else {\
data = memory.read32s(phys_addr);\
memory.write32(phys_addr, op);\
}\
} else {\
data = reg_e32s;\
reg_e32s = op;\
}
#define op(n, code) table16[n] = table32[n] = function() { code };
// opcode with modrm byte
#define opm(n, code)\
table16[n] = table32[n] = function() { var modrm_byte = read_imm8(); code };
// opcode that has a 16 and a 32 bit version
#define op2(n, code16, code32)\
table16[n] = function() { code16 };\
table32[n] = function() { code32 };\
#define opm2(n, code16, code32)\
table16[n] = function() { var modrm_byte = read_imm8(); code16 };\
table32[n] = function() { var modrm_byte = read_imm8(); code32 };\
#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, { reg8[reg_al] = instr ## 8(reg8[reg_al], read_imm8()); })\
op2(n | 5, { reg16[reg_ax] = instr ## 16(reg16[reg_ax], read_imm16()); }, { reg32s[reg_eax] = instr ## 32(reg32s[reg_eax], read_imm32s()); })\
// instructions start here
arith_group(0x00, add);
op2(0x06, { push16(sreg[reg_es]); }, { push32(sreg[reg_es]); });
pop_sreg_op(0x07, reg_es);
//op2(0x07,
// { safe_pop16(sreg[reg_es]); switch_seg(reg_es, memory.read16(get_esp_read(0))); },
// { safe_pop32s(sreg[reg_es]); switch_seg(reg_es); });
arith_group(0x08, or);
op2(0x0E, { push16(sreg[reg_cs]); }, { push32(sreg[reg_cs]); });
op(0x0F, { table0F[read_imm8()](); });
arith_group(0x10, adc);
op2(0x16, { push16(sreg[reg_ss]); }, { push32(sreg[reg_ss]); });
pop_sreg_op(0x17, reg_ss);
//op2(0x17,
// { safe_pop16(sreg[reg_ss]); switch_seg(reg_ss); },
// { safe_pop32s(sreg[reg_ss]); switch_seg(reg_ss); });
arith_group(0x18, sbb);
op2(0x1E, { push16(sreg[reg_ds]); }, { push32(sreg[reg_ds]); });
pop_sreg_op(0x1F, reg_ds);
//op2(0x1F,
// { safe_pop16(sreg[reg_ds]); switch_seg(reg_ds); },
// { safe_pop32s(sreg[reg_ds]); switch_seg(reg_ds); });
arith_group(0x20, and);
op(0x26, { seg_prefix(reg_es); });
op(0x27, { bcd_daa(); });
arith_group(0x28, sub);
op(0x2E, { seg_prefix(reg_cs); });
op(0x2F, { bcd_das(); });
arith_group(0x30, xor);
op(0x36, { seg_prefix(reg_ss); });
op(0x37, { 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(reg8[reg_al], read_imm8()); })
op2(0x3D, { cmp16(reg16[reg_ax], read_imm16()); }, { cmp32(reg32s[reg_eax], read_imm32s()); })
op(0x3E, { seg_prefix(reg_ds); });
op(0x3F, { bcd_aas(); });
#define group40(n, r16, r32)\
op2(0x40 | n, { reg16[r16] = inc16(reg16[r16]); }, { reg32s[r32] = inc32(reg32s[r32]); });
each_reg(group40);
#define group48(n, r16, r32)\
op2(0x48 | n, { reg16[r16] = dec16(reg16[r16]); }, { reg32s[r32] = dec32(reg32s[r32]); });
each_reg(group48);
#define group50(n, r16, r32)\
op2(0x50 | n, { push16(reg16[r16]); }, { push32(reg32s[r32]); })
each_reg(group50);
#define group58(n, r16, r32)\
op2(0x58 | n, { safe_pop16(reg16[r16]); }, { safe_pop32s(reg32s[r32]); })
each_reg(group58);
op2(0x60, { pusha16(); }, { pusha32(); });
op2(0x61, { popa16(); }, { popa32(); });
op(0x62, { throw unimpl("bound instruction"); });
opm(0x63, {
// arpl
write_ev16(arpl(data, modrm_byte >> 2 & 14));
});
op(0x64, { seg_prefix(reg_fs); });
op(0x65, { seg_prefix(reg_gs); });
op(0x66, {
// Operand-size override prefix
dbg_assert(operand_size_32 === is_32);
operand_size_32 = !is_32;
update_operand_size();
do_op();
operand_size_32 = is_32;
update_operand_size();
});
op(0x67, {
// Address-size override prefix
dbg_assert(address_size_32 === is_32);
address_size_32 = !is_32;
update_address_size();
do_op();
address_size_32 = is_32;
update_address_size();
});
op2(0x68, { push16(read_imm16()); }, { push32(read_imm32s()); });
opm2(0x69, {
read_e16s;
reg_g16 = imul_reg16(read_imm16s(), data);
}, {
read_e32s;
reg_g32s = imul_reg32(read_imm32s(), data);
});
op2(0x6A, { push16(read_imm8s()); }, { push32(read_imm8s()); });
opm2(0x6B, {
read_e16s;
reg_g16 = imul_reg16(read_imm8s(), data);
}, {
read_e32s;
reg_g32s = imul_reg32(read_imm8s(), data);
});
op(0x6C, { insb(); });
op2(0x6D, { insw(); }, { insd(); });
op(0x6E, { outsb(); });
op2(0x6F, { outsw(); }, { outsd(); });
#define group70(n, test) \
op(0x70 | n, { \
if(test) { \
instruction_pointer = instruction_pointer + read_imm8s() | 0;\
}\
instruction_pointer++;\
});
each_jcc(group70);
opm(0x80, {
sub_op(
{ write_e8(add8(data, read_imm8())); },
{ write_e8( or8(data, read_imm8())); },
{ write_e8(adc8(data, read_imm8())); },
{ write_e8(sbb8(data, read_imm8())); },
{ write_e8(and8(data, read_imm8())); },
{ write_e8(sub8(data, read_imm8())); },
{ write_e8(xor8(data, read_imm8())); },
{ read_e8; cmp8(data, read_imm8()); }
)
});
opm2(0x81, {
sub_op(
{ write_ev16(add16(data, read_imm16())); },
{ write_ev16( or16(data, read_imm16())); },
{ write_ev16(adc16(data, read_imm16())); },
{ write_ev16(sbb16(data, read_imm16())); },
{ write_ev16(and16(data, read_imm16())); },
{ write_ev16(sub16(data, read_imm16())); },
{ write_ev16(xor16(data, read_imm16())); },
{ read_e16; cmp16(data, read_imm16()); }
)
}, {
sub_op(
{ write_ev32s(add32(data, read_imm32s())); },
{ write_ev32s( or32(data, read_imm32s())); },
{ write_ev32s(adc32(data, read_imm32s())); },
{ write_ev32s(sbb32(data, read_imm32s())); },
{ write_ev32s(and32(data, read_imm32s())); },
{ write_ev32s(sub32(data, read_imm32s())); },
{ write_ev32s(xor32(data, read_imm32s())); },
{ read_e32s; cmp32(data, read_imm32s()); }
)
});
op(0x82, {
table[0x80](); // alias
});
opm2(0x83, {
sub_op(
{ write_ev16(add16(data, read_imm8s())); },
{ write_ev16( or16(data, read_imm8s())); },
{ write_ev16(adc16(data, read_imm8s())); },
{ write_ev16(sbb16(data, read_imm8s())); },
{ write_ev16(and16(data, read_imm8s())); },
{ write_ev16(sub16(data, read_imm8s())); },
{ write_ev16(xor16(data, read_imm8s())); },
{ read_e16; cmp16(data, read_imm8s()); }
)
}, {
sub_op(
{ write_ev32s(add32(data, read_imm8s())); },
{ write_ev32s( or32(data, read_imm8s())); },
{ write_ev32s(adc32(data, read_imm8s())); },
{ write_ev32s(sbb32(data, read_imm8s())); },
{ write_ev32s(and32(data, read_imm8s())); },
{ write_ev32s(sub32(data, read_imm8s())); },
{ write_ev32s(xor32(data, read_imm8s())); },
{ read_e32s; cmp32(data, read_imm8s()); }
)
});
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(xchg8(data, modrm_byte)); });
opm2(0x87, {
write_ev16(xchg16(data, modrm_byte));
}, {
write_ev32s(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(sreg[modrm_byte >> 3 & 7]); }, { set_ev32(sreg[modrm_byte >> 3 & 7]); })
op2(0x8D, { lea16(); }, { lea32(); });
opm(0x8E, {
var mod = modrm_byte >> 3 & 7;
read_e16;
switch_seg(mod, data);
if(mod === reg_ss)
{
// TODO
// run next instruction, so no irqs are handled
}
});
opm2(0x8F, {
// pop
var sp = safe_read16(get_esp_read(0));
stack_reg[reg_vsp] += 2;
set_ev16(sp);
}, {
// change esp first, then resolve modrm address
var sp = safe_read32s(get_esp_read(0));
stack_reg[reg_vsp] += 4;
set_ev32(sp);
});
#define group90(n, r16, r32) op2(0x90 | n, { xchg16r(r16) }, { xchg32r(r32) })
each_reg(group90)
op(0x90, /* nop */ );
op2(0x98,
{ /* cbw */ reg16[reg_ax] = reg8s[reg_al]; },
{ /* cwde */ reg32s[reg_eax] = reg16s[reg_ax]; });
op2(0x99,
{ /* cwd */ reg16[reg_dx] = reg16s[reg_ax] >> 15; },
{ /* cdq */ reg32s[reg_edx] = reg32s[reg_eax] >> 31; });
op2(0x9A, {
// callf
var new_ip = read_imm16();
var new_cs = read_imm16();
push16(sreg[reg_cs]);
push16(get_real_ip());
switch_seg(reg_cs, new_cs);
instruction_pointer = get_seg(reg_cs) + new_ip | 0;
}, {
var new_ip = read_imm32s();
var new_cs = read_imm16();
push32(sreg[reg_cs]);
push32(get_real_ip());
switch_seg(reg_cs, new_cs);
instruction_pointer = get_seg(reg_cs) + new_ip | 0;
});
op(0x9B, {
// fwait: check for pending fpu exceptions
if((cr0 & 9) === 9)
{
// task switched and MP bit is set
trigger_nm();
}
else
{
if(fpu)
{
fpu.fwait();
}
else
{
// EM bit isn't checked
// If there's no FPU, do nothing
}
}
});
op2(0x9C, {
// pushf
if(vm86_mode && getiopl() < 3)
{
trigger_gp(0);
}
else
{
load_flags();
push16(flags);
}
}, {
// pushf
if(vm86_mode && getiopl() < 3)
{
// trap to virtual 8086 monitor
trigger_gp(0);
}
else
{
load_flags();
// vm and rf flag are cleared in image stored on the stack
push32(flags & ~flag_vm & ~flag_rf);
}
});
op2(0x9D, {
// popf
if(vm86_mode && getiopl() < 3)
{
trigger_gp(0);
}
update_flags((flags & ~0xFFFF) | pop16());
handle_irqs();
}, {
// popf
if(vm86_mode && getiopl() < 3)
{
trigger_gp(0);
}
update_flags(pop32s());
handle_irqs();
});
op(0x9E, {
// sahf
flags = (flags & ~0xFF) | reg8[reg_ah];
flags = (flags & flags_mask) | flags_default;
flags_changed = 0;
});
op(0x9F, {
// lahf
load_flags();
reg8[reg_ah] = flags;
});
op(0xA0, {
// mov
var data = safe_read8(read_moffs());
reg8[reg_al] = data;
});
op2(0xA1, {
// mov
var data = safe_read16(read_moffs());
reg16[reg_ax] = data;
}, {
var data = safe_read32s(read_moffs());
reg32s[reg_eax] = data;
});
op(0xA2, {
// mov
safe_write8(read_moffs(), reg8[reg_al]);
});
op2(0xA3, {
// mov
safe_write16(read_moffs(), reg16[reg_ax]);
}, {
safe_write32(read_moffs(), reg32s[reg_eax]);
});
op(0xA4, { movsb(); });
op2(0xA5, { movsw(); }, { movsd(); });
op(0xA6, { cmpsb(); });
op2(0xA7, { cmpsw(); }, { cmpsd(); });
op(0xA8, {
test8(reg8[reg_al], read_imm8());
});
op2(0xA9, {
test16(reg16[reg_ax], read_imm16());
}, {
test32(reg32s[reg_eax], read_imm32s());
});
op(0xAA, { stosb(); });
op2(0xAB, { stosw(); }, { stosd(); });
op(0xAC, { lodsb(); });
op2(0xAD, { lodsw(); }, { lodsd(); });
op(0xAE, { scasb(); });
op2(0xAF, { scasw(); }, { scasd(); });
#define groupB0(n, r8) op(0xB0 | n, { reg8[r8] = read_imm8(); });
each_reg8(groupB0);
#define groupB8(n, r16, r32)\
op2(0xB8 | n, { reg16[r16] = read_imm16(); }, { reg32s[r32] = read_imm32s(); });
each_reg(groupB8);
opm(0xC0, {
write_e8(
sub_op_expr(
rol8,
ror8,
rcl8,
rcr8,
shl8,
shr8,
shl8,
sar8
)
(data, read_imm8() & 31)
)
});
opm2(0xC1, {
write_ev16(
sub_op_expr(
rol16,
ror16,
rcl16,
rcr16,
shl16,
shr16,
shl16,
sar16
)
(data, read_imm8() & 31)
)
}, {
write_ev32s(
sub_op_expr(
rol32,
ror32,
rcl32,
rcr32,
shl32,
shr32,
shl32,
sar32
)
(data, read_imm8() & 31)
)
});
op2(0xC2, {
// retn
var imm16 = read_imm16();
instruction_pointer = get_seg(reg_cs) + pop16() | 0;
// TODO regv
reg32s[reg_esp] += imm16;
}, {
// retn
var imm16 = read_imm16();
instruction_pointer = get_seg(reg_cs) + pop32s() | 0;
reg32s[reg_esp] += imm16;
});
op2(0xC3, {
// retn
instruction_pointer = get_seg(reg_cs) + pop16() | 0;;
}, {
// retn
instruction_pointer = get_seg(reg_cs) + pop32s() | 0;;
});
opm(0xC4, {
lss_op(reg_es);
});
opm(0xC5, {
lss_op(reg_ds);
});
opm(0xC6, { set_eb(read_imm8()); })
opm2(0xC7, { set_ev16(read_imm16()); }, { set_ev32(read_imm32s()); })
op2(0xC8, { enter16(); }, { enter32(); });
op2(0xC9, {
// leave
stack_reg[reg_vsp] = stack_reg[reg_vbp];
reg16[reg_bp] = pop16();
}, {
stack_reg[reg_vsp] = stack_reg[reg_vbp];
reg32s[reg_ebp] = pop32s();
});
op2(0xCA, {
// retf
var imm16 = read_imm16();
var ip = pop16();
switch_seg(reg_cs, pop16());
instruction_pointer = get_seg(reg_cs) + ip | 0;
reg16[reg_sp] += imm16;
}, {
// retf
var imm16 = read_imm16();
var ip = pop32s();
switch_seg(reg_cs, pop32s() & 0xFFFF);
instruction_pointer = get_seg(reg_cs) + ip | 0;
stack_reg[reg_vsp] += imm16;
});
op2(0xCB, {
// retf
var ip = pop16();
switch_seg(reg_cs, pop16());
instruction_pointer = get_seg(reg_cs) + ip | 0;
}, {
// retf
var ip = pop32s();
switch_seg(reg_cs, pop32s() & 0xFFFF);
instruction_pointer = get_seg(reg_cs) + ip | 0;
});
op(0xCC, {
// INT3
call_interrupt_vector(3, true, false);
});
op(0xCD, {
// INT
var imm8 = read_imm8();
call_interrupt_vector(imm8, true, false);
});
op(0xCE, {
// INTO
if(getof())
{
call_interrupt_vector(4, true, false);
}
});
op2(0xCF, {
// iret
if(!protected_mode || (vm86_mode && getiopl() === 3))
{
var ip = pop16();
switch_seg(reg_cs, pop16());
var new_flags = pop16();
instruction_pointer = ip + get_seg(reg_cs) | 0;
update_flags(new_flags);
handle_irqs();
}
else
{
if(vm86_mode)
{
// vm86 mode, iopl != 3
trigger_gp(0);
}
throw unimpl("16 bit iret in protected mode");
}
}, {
// iret
if(!protected_mode || (vm86_mode && getiopl() === 3))
{
if(vm86_mode) dbg_log("iret in vm86 mode iopl=3", LOG_CPU);
var ip = pop32s();
switch_seg(reg_cs, pop32s() & 0xFFFF);
var new_flags = pop32s();
instruction_pointer = ip + get_seg(reg_cs) | 0;
update_flags(new_flags);
handle_irqs();
return;
}
if(vm86_mode)
{
// vm86 mode, iopl != 3
trigger_gp(0);
}
if(flags & flag_nt)
{
if(DEBUG) throw "unimplemented nt";
}
//dbg_log("pop eip from " + h(reg32[reg_esp], 8));
instruction_pointer = pop32s();
//dbg_log("IRET | from " + h(previous_ip) + " to " + h(instruction_pointer));
sreg[reg_cs] = pop32s();
var new_flags = pop32s();
if(new_flags & flag_vm)
{
if(cpl === 0)
{
// return to virtual 8086 mode
update_flags(new_flags);
flags |= flag_vm;
dbg_log("in vm86 mode now " +
" cs:eip=" + h(sreg[reg_cs]) + ":" + h(instruction_pointer >>> 0) +
" iopl=" + getiopl(), LOG_CPU);
switch_seg(reg_cs, sreg[reg_cs]);
instruction_pointer = instruction_pointer + get_seg(reg_cs) | 0;
var temp_esp = pop32s();
var temp_ss = pop32s();
switch_seg(reg_es, pop32s() & 0xFFFF);
switch_seg(reg_ds, pop32s() & 0xFFFF);
switch_seg(reg_fs, pop32s() & 0xFFFF);
switch_seg(reg_gs, pop32s() & 0xFFFF);
reg32s[reg_esp] = temp_esp;
switch_seg(reg_ss, temp_ss & 0xFFFF);
cpl = 3;
is_32 = operand_size_32 = address_size_32 = false;
update_operand_size();
update_address_size();
dump_regs_short();
return;
}
else
{
// ignored if not cpl=0
new_flags &= ~flag_vm;
}
}
// protected mode return
var info = lookup_segment_selector(sreg[reg_cs]);
if(info.is_null)
{
throw unimpl("is null");
}
if(!info.is_present)
{
throw unimpl("not present");
}
if(!info.is_executable)
{
throw unimpl("not exec");
}
if(info.rpl < cpl)
{
throw unimpl("rpl < cpl");
}
if(info.dc_bit && info.dpl > info.rpl)
{
throw unimpl("conforming and dpl > rpl");
}
if(info.rpl > cpl)
{
// outer privilege return
var temp_esp = pop32s();
var temp_ss = pop32s();
reg32s[reg_esp] = temp_esp;
update_flags(new_flags);
cpl = info.rpl;
switch_seg(reg_ss, temp_ss & 0xFFFF);
//dbg_log("iret cpl=" + cpl + " to " + h(instruction_pointer) +
// " cs:eip=" + h(sreg[reg_cs],4) + ":" + h(get_real_ip(), 8) +
// " ss:esp=" + h(temp_ss & 0xFFFF, 2) + ":" + h(temp_esp, 8), LOG_CPU);
cpl_changed();
}
else
{
update_flags(new_flags);
// same privilege return
//dbg_log(h(new_flags) + " " + h(flags));
//dbg_log("iret to " + h(instruction_pointer));
}
is_32 = operand_size_32 = address_size_32 = info.size;
update_operand_size();
update_address_size();
segment_limits[reg_cs] = info.real_limit;
segment_offsets[reg_cs] = info.base;
instruction_pointer = instruction_pointer + get_seg(reg_cs) | 0;
//dbg_log("iret if=" + (flags & flag_interrupt) + " cpl=" + cpl + " eip=" + h(instruction_pointer >>> 0, 8), LOG_CPU);
dbg_assert(!page_fault);
handle_irqs();
});
opm(0xD0, {
write_e8(
sub_op_expr(
rol8,
ror8,
rcl8,
rcr8,
shl8,
shr8,
shl8,
sar8
)
(data, 1)
)
});
opm2(0xD1, {
write_ev16(
sub_op_expr(
rol16,
ror16,
rcl16,
rcr16,
shl16,
shr16,
shl16,
sar16
)
(data, 1)
)
}, {
write_ev32s(
sub_op_expr(
rol32,
ror32,
rcl32,
rcr32,
shl32,
shr32,
shl32,
sar32
)
(data, 1)
)
});
opm(0xD2, {
write_e8(
sub_op_expr(
rol8,
ror8,
rcl8,
rcr8,
shl8,
shr8,
shl8,
sar8
)
(data, reg8[reg_cl] & 31)
)
});
opm2(0xD3, {
write_ev16(
sub_op_expr(
rol16,
ror16,
rcl16,
rcr16,
shl16,
shr16,
shl16,
sar16
)
(data, reg8[reg_cl] & 31)
)
}, {
write_ev32s(
sub_op_expr(
rol32,
ror32,
rcl32,
rcr32,
shl32,
shr32,
shl32,
sar32
)
(data, reg8[reg_cl] & 31)
)
});
op(0xD4, {
bcd_aam();
});
op(0xD5, {
bcd_aad();
});
op(0xD6, {
// salc
throw unimpl("salc instruction");
});
op(0xD7, {
// xlat
if(address_size_32)
{
reg8[reg_al] = safe_read8(get_seg_prefix(reg_ds) + reg32s[reg_ebx] + reg8[reg_al]);
}
else
{
reg8[reg_al] = safe_read8(get_seg_prefix(reg_ds) + reg16[reg_bx] + reg8[reg_al]);
}
});
// fpu instructions
#define fpu_op(n, op)\
opm(n, { \
if(cr0 & 0xC)\
/* task switch or emulation */\
trigger_nm();\
if(modrm_byte < 0xC0)\
fpu.op_ ## op ## _mem(modrm_byte, modrm_resolve(modrm_byte));\
else\
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);
op(0xE0, { loopne(); });
op(0xE1, { loope(); });
op(0xE2, { loop(); });
op(0xE3, { jcxz(); });
op(0xE4, {
var port = read_imm8();
test_privileges_for_io(port, 1);
reg8[reg_al] = io.port_read8(port);
});
op2(0xE5, {
var port = read_imm8();
test_privileges_for_io(port, 2);
reg16[reg_ax] = io.port_read16(port);
}, {
var port = read_imm8();
test_privileges_for_io(port, 4);
reg32s[reg_eax] = io.port_read32(port);
});
op(0xE6, {
var port = read_imm8();
test_privileges_for_io(port, 1);
io.port_write8(port, reg8[reg_al]);
});
op2(0xE7, {
var port = read_imm8();
test_privileges_for_io(port, 2);
io.port_write16(port, reg16[reg_ax]);
}, {
var port = read_imm8();
test_privileges_for_io(port, 4);
io.port_write32(port, reg32s[reg_eax]);
});
op2(0xE8, {
// call
var imm16s = read_imm16s();
push16(get_real_ip());
jmp_rel16(imm16s);
}, {
// call
var imm32s = read_imm32s();
push32(get_real_ip());
instruction_pointer = instruction_pointer + imm32s | 0;
});
op2(0xE9, {
// jmp
var imm16s = read_imm16s();
jmp_rel16(imm16s);
}, {
// jmp
var imm32s = read_imm32s();
instruction_pointer = instruction_pointer + imm32s | 0;
});
op2(0xEA, {
// jmpf
var ip = read_imm16();
switch_seg(reg_cs, read_imm16());
instruction_pointer = ip + get_seg(reg_cs) | 0;
}, {
// jmpf
var ip = read_imm32s();
switch_seg(reg_cs, read_imm16());
instruction_pointer = ip + get_seg(reg_cs) | 0;
});
op(0xEB, {
// jmp near
var imm8 = read_imm8s();
instruction_pointer = instruction_pointer + imm8 | 0;
});
op(0xEC, {
var port = reg16[reg_dx];
test_privileges_for_io(port, 1);
reg8[reg_al] = io.port_read8(port);
});
op2(0xED, {
var port = reg16[reg_dx];
test_privileges_for_io(port, 2);
reg16[reg_ax] = io.port_read16(port);
}, {
var port = reg16[reg_dx];
test_privileges_for_io(port, 4);
reg32s[reg_eax] = io.port_read32(port);
});
op(0xEE, {
var port = reg16[reg_dx];
test_privileges_for_io(port, 1);
io.port_write8(port, reg8[reg_al]);
});
op2(0xEF, {
var port = reg16[reg_dx];
test_privileges_for_io(port, 2);
io.port_write16(port, reg16[reg_ax]);
}, {
var port = reg16[reg_dx];
test_privileges_for_io(port, 4);
io.port_write32(port, reg32s[reg_eax]);
});
op(0xF0, {
// lock
// TODO
// This triggers UD when used with
// some instructions that don't write to memory
});
op(0xF1, {
// INT1
// https://code.google.com/p/corkami/wiki/x86oddities#IceBP
throw unimpl("int1 instruction");
});
op(0xF2, {
// repnz
dbg_assert(!repeat_string_prefix);
repeat_string_prefix = true;
repeat_string_type = false;
do_op();
repeat_string_prefix = false;
});
op(0xF3, {
// repz
dbg_assert(!repeat_string_prefix);
repeat_string_prefix = true;
repeat_string_type = true;
do_op();
repeat_string_prefix = false;
});
op(0xF4, {
if(cpl)
{
trigger_gp(0);
}
// hlt
if((flags & flag_interrupt) === 0)
{
envapi.log("cpu halted");
stopped = true;
if(DEBUG) dump_regs();
throw "HALT";
}
else
{
// infinite loop until an irq happens
// this is handled in call_interrupt_vector
instruction_pointer--;
in_hlt = true;
}
});
op(0xF5, {
// cmc
flags = (flags | 1) ^ getcf();
flags_changed &= ~1;
});
opm(0xF6, {
sub_op(
{ read_e8; test8(data, read_imm8()); },
{ read_e8; test8(data, read_imm8()); },
{ write_e8(~(data)); },
{ write_e8(neg8(data)); },
{ read_e8; mul8(data); },
{ read_e8s; imul8(data); },
{ read_e8; div8(data); },
{ read_e8s; idiv8(data); }
)
});
opm2(0xF7, {
sub_op (
{ read_e16; test16(data, read_imm16()); },
{ read_e16; test16(data, read_imm16()); },
{ write_ev16(~(data)); },
{ write_ev16(neg16(data)); },
{ read_e16; mul16(data); },
{ read_e16s; imul16(data); },
{ read_e16; div16(data); },
{ read_e16s; idiv16(data); }
)
}, {
sub_op (
{ read_e32s; test32(data, read_imm32s()); },
{ read_e32s; test32(data, read_imm32s()); },
{ write_ev32s(~(data)); },
{ write_ev32s(neg32(data)); },
{ read_e32; mul32(data); },
{ read_e32s; imul32(data); },
{ read_e32; div32(data); },
{ read_e32s; idiv32(data); }
)
});
op(0xF8, {
// clc
flags &= ~flag_carry;
flags_changed &= ~1;
});
op(0xF9, {
// stc
flags |= flag_carry;
flags_changed &= ~1;
});
op(0xFA, {
// cli
//dbg_log("interrupts off");
if(!protected_mode || (vm86_mode ?
getiopl() === 3 : getiopl() >= cpl))
{
flags &= ~flag_interrupt;
}
else
{
if(getiopl() < 3 && (vm86_mode ?
(cr4 & 1) :
(cpl === 3 && (cr4 & 2))))
{
flags &= ~flag_vif;
}
else
{
trigger_gp(0);
}
}
});
op(0xFB, {
// sti
//dbg_log("interrupts on");
if(!protected_mode || (vm86_mode ?
getiopl() === 3 : getiopl() >= cpl))
{
flags |= flag_interrupt;
table[read_imm8()]();
handle_irqs();
}
else
{
if(getiopl() < 3 && (flags & flag_vip) === 0 && (vm86_mode ?
(cr4 & 1) :
(cpl === 3 && (cr4 & 2))))
{
flags |= flag_vif;
}
else
{
trigger_gp(0);
}
}
});
op(0xFC, {
// cld
flags &= ~flag_direction;
});
op(0xFD, {
// std
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;
push16(get_real_ip());
instruction_pointer = get_seg(reg_cs) + data | 0;
},
{
// 3, callf
if(modrm_byte >= 0xC0)
{
raise_exception(6);
dbg_assert(false);
}
var virt_addr = modrm_resolve(modrm_byte);
push16(sreg[reg_cs]);
push16(get_real_ip());
switch_seg(reg_cs, safe_read16(virt_addr + 2));
instruction_pointer = get_seg(reg_cs) + safe_read16(virt_addr) | 0;
dbg_assert(!page_fault);
},
{
// 4, jmp near
read_e16;
instruction_pointer = get_seg(reg_cs) + data | 0;
},
{
// 5, jmpf
if(modrm_byte >= 0xC0)
{
raise_exception(6);
dbg_assert(false);
}
var virt_addr = modrm_resolve(modrm_byte);
switch_seg(reg_cs, safe_read16(virt_addr + 2));
instruction_pointer = get_seg(reg_cs) + safe_read16(virt_addr) | 0;
// TODO safe read
},
{
// 6, push
read_e16;
push16(data);
},
{
todo();
}
)
}, {
sub_op(
{ write_ev32s(inc32(data)); },
{ write_ev32s(dec32(data)); },
{
// 2, call near
read_e32s;
push32(get_real_ip());
instruction_pointer = get_seg(reg_cs) + data | 0;
},
{
// 3, callf
if(modrm_byte >= 0xC0)
{
raise_exception(6);
dbg_assert(false);
}
var virt_addr = modrm_resolve(modrm_byte);
var new_cs = safe_read16(virt_addr + 4);
var new_ip = safe_read32s(virt_addr);
push32(sreg[reg_cs]);
push32(get_real_ip());
switch_seg(reg_cs, new_cs);
instruction_pointer = get_seg(reg_cs) + new_ip | 0;
},
{
// 4, jmp near
read_e32s;
instruction_pointer = get_seg(reg_cs) + data | 0;
},
{
// 5, jmpf
if(modrm_byte >= 0xC0)
{
raise_exception(6);
dbg_assert(false);
}
var virt_addr = modrm_resolve(modrm_byte);
var new_cs = safe_read16(virt_addr + 4);
var new_ip = safe_read32s(virt_addr);
switch_seg(reg_cs, new_cs);
instruction_pointer = get_seg(reg_cs) + new_ip | 0;
},
{
// push
read_e32s;
push32(data);
},
{
todo();
}
)
});
// 0F ops start here
#define table16 table0F_16
#define table32 table0F_32
opm(0x00, {
read_e16;
if(!protected_mode)
{
// No GP, UD is correct here
trigger_ud();
}
if(cpl)
{
trigger_gp(0);
}
switch(modrm_byte >> 3 & 7)
{
case 2:
load_ldt(data);
break;
case 3:
load_tr(data);
break;
default:
dbg_log(modrm_byte >> 3 & 7, LOG_CPU);
todo();
}
});
opm(0x01, {
if(cpl)
{
trigger_gp(0);
}
var mod = modrm_byte >> 3 & 7;
if(mod === 4)
{
// smsw
set_ev16(cr0);
return;
}
else if(mod === 6)
{
// lmsw
read_e16;
cr0 = (cr0 & ~0xF) | (data & 0xF);
if(protected_mode)
{
// lmsw cannot be used to switch back
cr0 |= 1;
}
//dbg_log("cr0=" + h(data >>> 0), LOG_CPU);
cr0_changed();
return;
}
if(modrm_byte >= 0xC0)
{
// only memory
raise_exception(6);
dbg_assert(false);
}
if((mod === 2 || mod === 3) && protected_mode)
{
// override prefix, so modrm_resolve does not return the segment part
// only lgdt and lidt and only in protected mode
segment_prefix = reg_noseg;
}
var addr = modrm_resolve(modrm_byte);
segment_prefix = -1;
switch(mod)
{
case 0:
// sgdt
safe_write16(addr, gdtr_size);
safe_write32(addr + 2, gdtr_offset);
break;
case 1:
// sidt
safe_write16(addr, idtr_size);
safe_write32(addr + 2, idtr_offset);
break;
case 2:
// lgdt
var size = safe_read16(addr);
var offset = safe_read32s(addr + 2);
gdtr_size = size;
gdtr_offset = offset;
if(!operand_size_32)
{
gdtr_offset &= 0xFFFFFF;
}
//dbg_log("gdt at " + h(gdtr_offset) + ", " + gdtr_size + " bytes", LOG_CPU);
//dump_gdt_ldt();
break;
case 3:
// lidt
var size = safe_read16(addr);
var offset = safe_read32s(addr + 2);
idtr_size = size;
idtr_offset = offset;
if(!operand_size_32)
{
idtr_offset &= 0xFFFFFF;
}
//dbg_log("[" + h(instruction_pointer) + "] idt at " +
// h(idtr_offset) + ", " + idtr_size + " bytes " + h(addr), LOG_CPU);
break;
case 7:
// flush translation lookaside buffer
invlpg(addr);
break;
default:
dbg_log(mod);
todo();
}
});
opm(0x02, {
todo();
// lar
});
opm(0x03, {
todo();
// lsl
});
undefined_instruction(0x04);
undefined_instruction(0x05);
op(0x06, {
// clts
if(cpl)
{
trigger_gp(0);
}
else
{
//dbg_log("clts", LOG_CPU);
cr0 &= ~8;
// do something here ?
}
});
undefined_instruction(0x07);
// invd
todo_op(0x08);
op(0x09, {
if(cpl)
{
trigger_gp(0);
}
// wbinvd
});
undefined_instruction(0x0A);
op(0x0B, {
// UD2
trigger_ud();
});
undefined_instruction(0x0C);
todo_op(0x0D);
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(operand_size_32) {
read_e32s;
}
else {
read_e16;
}
});
unimplemented_sse(0x19);
unimplemented_sse(0x1A);
unimplemented_sse(0x1B);
unimplemented_sse(0x1C);
unimplemented_sse(0x1D);
unimplemented_sse(0x1E);
unimplemented_sse(0x1F);
opm(0x20, {
if(cpl)
{
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 = cr0;
break;
case 2:
reg_e32s = cr2;
break;
case 3:
//dbg_log("read cr3 (" + h(cr3, 8) + ")", LOG_CPU);
reg_e32s = cr3;
break;
case 4:
reg_e32s = cr4;
break;
default:
dbg_log(modrm_byte >> 3 & 7);
todo();
}
});
opm(0x21, {
if(cpl)
{
trigger_gp(0);
}
// TODO: mov from debug register
dbg_assert(modrm_byte >= 0xC0);
reg32s[modrm_byte & 7] = dreg[modrm_byte >> 3 & 7];
//dbg_log("read dr" + (modrm_byte >> 3 & 7) + ": " + h(reg32[modrm_byte & 7]), LOG_CPU);
});
opm(0x22, {
if(cpl)
{
trigger_gp(0);
}
var data = reg_e32s;
//dbg_log("cr" + mod + " written: " + h(reg32[reg]), LOG_CPU);
// mov cr, addr
// mod = which control register
switch(modrm_byte >> 3 & 7)
{
case 0:
if((data & (0x80000001|0)) === (0x80000000 | 0))
{
// cannot load PG without PE
throw unimpl("#GP handler");
}
if((cr0 & 1<<31) && !(data & 1<<31))
{
full_clear_tlb();
}
cr0 = data;
cr0_changed();
//dbg_log("cr0=" + h(data >>> 0), LOG_CPU);
break;
case 2:
cr2 = data;
//dbg_log("cr2=" + h(data >>> 0), LOG_CPU);
break;
case 3:
cr3 = data;
dbg_assert((cr3 & 0xFFF) === 0);
clear_tlb();
//dump_page_directory();
//dbg_log("page directory loaded at " + h(cr3 >>> 0, 8), LOG_CPU);
break;
case 4:
if(data & (1 << 11 | 1 << 12 | 1 << 15 | 1 << 16 | 1 << 19 | 0xFFC00000))
{
trigger_gp(0);
}
if((cr4 ^ data) & 0x80)
{
full_clear_tlb();
}
cr4 = data;
page_size_extensions = (cr4 & 16) ? PSE_ENABLED : 0;
if(cr4 & 0x20)
{
throw unimpl("PAE");
}
dbg_log("cr4=" + h(cr4 >>> 0), LOG_CPU);
break;
default:
dbg_log(modrm_byte >> 3 & 7);
todo();
}
});
opm(0x23, {
if(cpl)
{
trigger_gp(0);
}
// TODO: mov to debug register
dbg_assert(modrm_byte >= 0xC0);
//dbg_log("write dr" + (modrm_byte >> 3 & 7) + ": " + h(reg32[modrm_byte & 7]), LOG_CPU);
dreg[modrm_byte >> 3 & 7] = reg32s[modrm_byte & 7];
});
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
todo_op(0x30);
op(0x30, {
// wrmsr - write maschine specific register
dbg_log("wrmsr ecx=" + h(reg32[reg_ecx], 8), LOG_CPU);
});
op(0x31, {
// rdtsc - read timestamp counter
if(!protected_mode || !cpl || !(cr4 & 4))
{
reg32s[reg_eax] = cpu_timestamp_counter;
reg32s[reg_edx] = cpu_timestamp_counter / 0x100000000;
//dbg_log("rtdsc edx:eax=" + h(reg32[reg_edx], 8) + ":" + h(reg32[reg_eax], 8), LOG_CPU);
}
else
{
trigger_gp(0);
}
});
op(0x32, {
// rdmsr - read maschine specific register
dbg_log("rdmsr ecx=" + h(reg32[reg_ecx], 8), LOG_CPU);
});
// rdpmc
todo_op(0x33);
// sysenter
todo_op(0x34);
// sysexit
todo_op(0x35);
undefined_instruction(0x36);
// getsec
todo_op(0x37);
unimplemented_sse(0x38);
unimplemented_sse(0x39);
unimplemented_sse(0x3A);
unimplemented_sse(0x3B);
unimplemented_sse(0x3C);
unimplemented_sse(0x3D);
unimplemented_sse(0x3E);
unimplemented_sse(0x3F);
#define group0F40(n, test)\
opm2(0x40 | n, {\
if(test) {\
read_e16;\
reg_g16 = data;\
} else if(modrm_byte < 0xC0)\
modrm_resolve(modrm_byte)\
}, {\
if(test) {\
read_e32s;\
reg_g32s = data;\
} else if(modrm_byte < 0xC0)\
modrm_resolve(modrm_byte)\
});
each_jcc(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, { jmpcc16(test); }, { jmpcc32(test); })
each_jcc(group0F80)
#define group0F90(n, test) opm(0x90 | n, { set_eb(!test ^ 1); });
each_jcc(group0F90);
op2(0xA0, { push16(sreg[reg_fs]); }, { push32(sreg[reg_fs]); });
pop_sreg_op(0xA1, reg_fs);
//op2(0xA1,
// { safe_pop16(sreg[reg_fs]); switch_seg(reg_fs); },
// { safe_pop32s(sreg[reg_fs]); switch_seg(reg_fs); });
op(0xA2, { cpuid(); });
opm(0xA3, {
if(operand_size_32)
{
if(modrm_byte < 0xC0)
{
bt_mem(modrm_resolve(modrm_byte), reg_g32s);
}
else
{
bt_reg(reg_e32s, reg_g32s & 31);
}
}
else
{
if(modrm_byte < 0xC0)
{
bt_mem(modrm_resolve(modrm_byte), reg_g16s);
}
else
{
bt_reg(reg_e16, reg_g16 & 15);
}
}
});
opm2(0xA4, {
write_ev16(shld16(data, reg_g16, read_imm8() & 31));
}, {
write_ev32s(shld32(data, reg_g32s, read_imm8() & 31));
});
opm2(0xA5, {
write_ev16(shld16(data, reg_g16, reg8[reg_cl] & 31));
}, {
write_ev32s(shld32(data, reg_g32s, reg8[reg_cl] & 31));
});
undefined_instruction(0xA6);
undefined_instruction(0xA7);
op2(0xA8, { push16(sreg[reg_gs]); }, { push32(sreg[reg_gs]); });
pop_sreg_op(0xA9, reg_gs);
//op2(0xA9,
// { safe_pop16(sreg[reg_gs]); switch_seg(reg_gs); },
// { safe_pop32s(sreg[reg_gs]); switch_seg(reg_gs); });
// rsm
todo_op(0xAA);
opm(0xAB, {
bt_op(bts, reg_g16s, reg_g32s);
});
opm2(0xAC, {
write_ev16(shrd16(data, reg_g16, read_imm8() & 31));
}, {
write_ev32s(shrd32(data, reg_g32s, read_imm8() & 31));
});
opm2(0xAD, {
write_ev16(shrd16(data, reg_g16, reg8[reg_cl] & 31));
}, {
write_ev32s(shrd32(data, reg_g32s, reg8[reg_cl] & 31));
});
todo_op(0xAE);
opm2(0xAF, {
read_e16s;
reg_g16 = imul_reg16(reg_g16s, data);
}, {
read_e32s;
reg_g32s = imul_reg32(reg_g32s, data);
});
opm(0xB0, {
// cmpxchg8
if(modrm_byte < 0xC0)
{
var virt_addr = modrm_resolve(modrm_byte);
translate_address_write(virt_addr);
var data = safe_read8(virt_addr);
}
else
data = reg_e8;
cmp8(data, reg8[reg_al]);
if(getzf())
{
if(modrm_byte < 0xC0)
safe_write8(virt_addr, reg_g8);
else
reg_e8 = reg_g8;
}
else
{
reg8[reg_al] = data;
}
});
opm2(0xB1, {
// cmpxchg16/32
if(modrm_byte < 0xC0)
{
var virt_addr = modrm_resolve(modrm_byte);
translate_address_write(virt_addr);
var data = safe_read16(virt_addr);
}
else
data = reg_e16;
cmp16(data, reg16[reg_ax]);
if(getzf())
{
if(modrm_byte < 0xC0)
safe_write16(virt_addr, reg_g16);
else
reg_e16 = reg_g16;
}
else
{
reg16[reg_ax] = data;
}
}, {
if(modrm_byte < 0xC0)
{
var virt_addr = modrm_resolve(modrm_byte);
translate_address_write(virt_addr);
var data = safe_read32s(virt_addr);
}
else
{
data = reg_e32s;
}
cmp32(data, reg32s[reg_eax]);
if(getzf())
{
if(modrm_byte < 0xC0)
safe_write32(virt_addr, reg_g32s);
else
reg_e32s = reg_g32s;
}
else
{
reg32s[reg_eax] = data;
}
});
// lss
opm(0xB2, {
lss_op(reg_ss);
});
opm(0xB3, {
bt_op(btr, reg_g16s, reg_g32s);
});
// lfs, lgs
opm(0xB4, {
lss_op(reg_fs);
});
opm(0xB5, {
lss_op(reg_gs);
});
opm2(0xB6, {
// movzx
read_e8;
reg_g16 = data;
}, {
read_e8;
reg_g32s = data;
});
opm(0xB7, {
// movzx
read_e16;
reg_g32s = data;
});
// popcnt
todo_op(0xB8);
// UD
todo_op(0xB9);
opm(0xBA, {
//dbg_log("BA " + mod + " " + imm8);
switch(modrm_byte >> 3 & 7)
{
case 4:
if(operand_size_32)
{
if(modrm_byte < 0xC0)
{
bt_mem(modrm_resolve(modrm_byte), read_imm8() & 31);
}
else
{
bt_reg(reg_e32s, read_imm8() & 31);
}
}
else
{
if(modrm_byte < 0xC0)
{
bt_mem(modrm_resolve(modrm_byte), read_imm8() & 31);
}
else
{
bt_reg(reg_e16, read_imm8() & 15);
}
}
break;
case 5:
bt_op(bts, read_imm8() & 31, read_imm8() & 31);
break;
case 6:
bt_op(btr, read_imm8() & 31, read_imm8() & 31);
break;
case 7:
bt_op(btc, read_imm8() & 31, read_imm8() & 31);
break;
default:
dbg_log(modrm_byte >> 3 & 7);
todo();
}
});
opm(0xBB, {
bt_op(btc, reg_g16s, reg_g32s);
});
opm2(0xBC, {
read_e16;
reg_g16 = bsf16(reg_g16, data);
}, {
read_e32s;
reg_g32s = bsf32(reg_g32s, data);
});
opm2(0xBD, {
read_e16;
reg_g16 = bsr16(reg_g16, data);
}, {
read_e32s;
reg_g32s = 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(xadd8(data, modrm_byte >> 1 & 0xC | modrm_byte >> 5 & 1));
});
opm2(0xC1, {
write_ev16(xadd16(data, modrm_byte >> 2 & 14));
}, {
write_ev32s(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)
{
trigger_ud();
}
var addr = modrm_resolve(modrm_byte);
translate_address_write(addr);
translate_address_write(addr + 7);
var m64_low = safe_read32s(addr);
var m64_high = safe_read32s(addr + 4);
if(reg32s[reg_eax] === m64_low &&
reg32s[reg_edx] === m64_high)
{
flags |= flag_zero;
safe_write32(addr, reg32s[reg_ebx]);
safe_write32(addr + 4, reg32s[reg_ecx]);
}
else
{
flags &= ~flag_zero;
reg32s[reg_eax] = m64_low;
reg32s[reg_edx] = m64_high;
}
flags_changed &= ~flag_zero;
});
#define group0FC8(n, r16, r32) op(0xC8 | n, { bswap(r32); });
each_reg(group0FC8)
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