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x86.yaml
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x86.yaml
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#
## Description ################################################################
# This yaml file tries to detail all x86 instructions.
# It's used by Medusa to generate C++ code in order to disassemble x86
# executable.
# Check out http://github.com/wisk/medusa for further information.
## Architecture information ###################################################
architecture_information:
name: x86
instruction_set_type: complex
## Flag semantic #######################################################
function:
## Standard flags operations
sign_flag: &sign_flag |
sf.id = bit_cast(res.val >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int1(1));
zero_flag: &zero_flag |
zf.id = ite(res.val == int(op0.bit, 0), int1(1), int1(0))
adjust_flag: &adjust_flag |
af.id = bit_cast((op0.val ^ op1.val ^ res.val) >> (int(op0.bit, 4)), int1(1));
parity_flag: &parity_flag |
alloc_var('pf_tmp', pf.bit);
pf_tmp = int1(1);
pf_tmp ^= bit_cast(res.val >> int(op0.bit, 0), int1(1));
pf_tmp ^= bit_cast(res.val >> int(op0.bit, 1), int1(1));
pf_tmp ^= bit_cast(res.val >> int(op0.bit, 2), int1(1));
pf_tmp ^= bit_cast(res.val >> int(op0.bit, 3), int1(1));
pf_tmp ^= bit_cast(res.val >> int(op0.bit, 4), int1(1));
pf_tmp ^= bit_cast(res.val >> int(op0.bit, 5), int1(1));
pf_tmp ^= bit_cast(res.val >> int(op0.bit, 6), int1(1));
pf_tmp ^= bit_cast(res.val >> int(op0.bit, 7), int1(1));
pf.id = pf_tmp;
free_var('pf_tmp');
overflow_flag_add: &overflow_flag_add |
of.id = bit_cast(((op0.val ^ res.val) & (~(op0.val ^ op1.val))) >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int1(1));
carry_flag_add: &carry_flag_add |
cf.id = bit_cast(((op0.val & op1.val) ^ ((op0.val ^ op1.val ^ res.val) & (op0.val ^ op1.val))) >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int1(1));
overflow_flag_sub: &overflow_flag_sub |
of.id = bit_cast(((op0.val ^ res.val) & (op0.val ^ op1.val)) >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int1(1));
carry_flag_sub: &carry_flag_sub |
cf.id = bit_cast(((op0.val ^ op1.val ^ res.val) ^ ((op0.val ^ res.val) & (op0.val ^ op1.val))) >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int1(1));
## Useful functions
count_mask: &count_mask |
if __expr and int(op0.bit, op0.bit) == int(op0.bit, 64):
count = count & int(op0.bit, 0x3f)
else:
count = count & int(op0.bit, 0x1f);
## String functions
scan_string: &scan_string |
alloc_var('res', op0.bit);
res = op0.val - op1.val;
call('overflow_flag_sub');
call('carry_flag_sub');
call('sign_flag');
call('zero_flag');
call('parity_flag');
call('adjust_flag');
if __expr and df.id == int1(1):
op1.offset -= int(op1.offset.bit, op1.byte)
else:
op1.offset += int(op1.offset.bit, op1.byte);
free_var('res');
store_string: &store_string |
op1.val = op0.val;
if __expr and df.id == int1(1):
op1.offset -= int(op1.offset.bit, op1.byte)
else:
op1.offset += int(op1.offset.bit, op1.byte);
load_string: &load_string |
op0.val = op1.val;
if __expr and df.id == int1(1):
op1.offset -= int(op1.offset.bit, op1.byte)
else:
op1.offset += int(op1.offset.bit, op1.byte);
move_string: &move_string |
op1.val = op0.val;
if __expr and df.id == int1(1):
op0.offset -= int(op0.offset.bit, op0.byte)
op1.offset -= int(op1.offset.bit, op1.byte)
else:
op0.offset += int(op0.offset.bit, op0.byte)
op1.offset += int(op1.offset.bit, op1.byte);
compare_string: &compare_string |
alloc_var('res', op0.bit);
res = op0.val - op1.val;
call('overflow_flag_sub');
call('carry_flag_sub');
call('sign_flag');
call('zero_flag');
call('parity_flag');
call('adjust_flag');
if __expr and df.id == int1(1):
op0.offset -= int(op0.offset.bit, op0.byte)
op1.offset -= int(op1.offset.bit, op1.byte)
else:
op0.offset += int(op0.offset.bit, op0.byte)
op1.offset += int(op1.offset.bit, op1.byte);
free_var('res');
## Instruction semantic #######################################################
semantic:
## Arithmetic / Logical operations
add: &add |
alloc_var('res', op0.bit);
res.val = op0.val + op1.val;
call('overflow_flag_add');
call('carry_flag_add');
call('sign_flag');
call('zero_flag');
call('parity_flag');
call('adjust_flag');
op0.val = res.val;
free_var('res');
addss: &addss |
alloc_var('res', 32);
res = fadd(bit_cast(op0.val, int_type32), bit_cast(op1.val, int_type32));
op0.val = clear_bits(op0.val, bit_cast(int(op0.bit, 0xffffffff), int_type(op0.bit))) | bit_cast(res, int_type(op0.bit));
free_var('res');
mulss: &mulss |
alloc_var('res', 32);
res = fmul(bit_cast(op0.val, int_type32), bit_cast(op1.val, int_type32));
op0.val = clear_bits(op0.val, bit_cast(int(op0.bit, 0xffffffff), int_type(op0.bit))) | bit_cast(res, int_type(op0.bit));
free_var('res');
aaa: &aaa |
alloc_var('cond', 1);
cond = int1(0);
if __expr and ((al.id & int(al.bit, 0x0f)) > int(al.bit, 9)): cond |= int1(1);
if __expr and af.id == int1(1): cond |= int1(1);
if __expr and cond == int1(1):
ax.id += int(ax.bit, 0x106)
af.id = int1(1)
cf.id = int1(1)
else:
af.id = int1(0)
cf.id = int1(0);
al.id &= int(al.bit, 0x0f);
free_var('cond');
aad: &aad |
alloc_var('tmp_al', al.bit);
alloc_var('tmp_ah', ah.bit);
alloc_var('pf_tmp', pf.bit);
tmp_al = al.id;
tmp_ah = ah.id;
al.id = (tmp_al + (tmp_ah * op0.val)) & int(al.bit, 0xff);
ah.id = int(ah.bit, 0);
# Start updating ZF
if __expr and al.id == int(al.bit, 0): zf.id = int1(1)
else: zf.id = int1(0);
# Start updating SF
sf.id = bit_cast(al.id >> (int(al.bit, al.bit) - int(al.bit, 1)), int1(1));
# Start updating PF
pf_tmp = int1(1);
pf_tmp ^= bit_cast(al.id >> int(al.bit, 0), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 1), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 2), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 3), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 4), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 5), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 6), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 7), int1(1));
pf.id = pf_tmp;
free_var('pf_tmp');
free_var('tmp_ah');
free_var('tmp_al');
aam: &aam |
alloc_var('tmp_al', al.bit);
alloc_var('pf_tmp', pf.bit);
tmp_al = al.id;
ah.id = tmp_al / op0.val;
al.id = tmp_al % op0.val;
# Start updating ZF
if __expr and al.id == int(al.bit, 0): zf.id = int1(1)
else: zf.id = int1(0);
# Start updating SF
sf.id = bit_cast(al.id >> (int(al.bit, al.bit) - int(al.bit, 1)), int1(1));
# Start updating PF
pf_tmp = int1(1);
pf_tmp ^= bit_cast(al.id >> int(al.bit, 0), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 1), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 2), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 3), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 4), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 5), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 6), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 7), int1(1));
pf.id = pf_tmp;
free_var('pf_tmp');
free_var('tmp_al');
aas: &aas |
alloc_var('cond', 1);
cond = int1(0);
if __expr and ((al.id & int(al.bit, 0x0f)) > int(al.bit, 9)): cond |= int1(1)
if __expr and af.id == int1(1): cond |= int1(1);
if __expr and cond == int1(1):
ax.id -= int(ax.bit, 0x6)
ah.id -= int(ah.bit, 1)
af.id = int1(1)
cf.id = int1(1)
else:
cf.id = int1(0)
af.id = int1(0);
al.id &= int(al.bit, 0x0f);
free_var('cond');
adc: &adc |
alloc_var('res', op0.bit);
res.val = op0.val + op1.val + bit_cast(cf.id, int(op0.bit, op0.bit));
call('overflow_flag_add');
call('carry_flag_add');
call('sign_flag');
call('zero_flag');
call('parity_flag');
call('adjust_flag');
op0.val = res.val;
free_var('res');
daa: &daa |
alloc_var('old_al', al.bit);
alloc_var('old_cf', 1);
alloc_var('cond', 1);
alloc_var('pf_tmp', pf.bit);
old_cf = cf.id;
old_al = al.id;
cf.id = int1(0);
cond = int1(0);
if __expr and (al.id & int(al.bit, 0x0f)) > int(al.bit, 9): cond |= int1(1);
if __expr and af.id == int1(1): cond |= int1(1);
if __expr and cond == int1(1):
if __expr and al.id > int(al.bit, 0xf9): cf.id = int1(1)
else: cf.id = old_cf
al.id += int(al.bit, 0x6)
af.id = int1(1)
else:
af.id = int1(0);
cond = int1(0);
if __expr and old_al > int(al.bit, 0x99): cond |= int1(1);
if __expr and old_cf == int1(1): cond |= int1(1);
if __expr and cond == int1(1):
al.id += int(al.bit, 0x60)
cf.id = int1(1)
else:
cf.id = int1(0);
# Start updating ZF
if __expr and al.id == int(al.bit, 0): zf.id = int1(1)
else: zf.id = int1(0);
# Start updating SF
sf.id = bit_cast(al.id >> (int(al.bit, al.bit) - int(al.bit, 1)), int1(1));
# Start updating PF
pf_tmp = int1(1);
pf_tmp ^= bit_cast(al.id >> int(al.bit, 0), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 1), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 2), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 3), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 4), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 5), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 6), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 7), int1(1));
pf.id = pf_tmp;
free_var('pf_tmp');
free_var('cond');
free_var('old_cf');
free_var('old_al');
das: &das |
alloc_var('old_al', al.bit);
alloc_var('old_cf', 1);
alloc_var('cond', 1);
alloc_var('pf_tmp', pf.bit);
old_cf = cf.id;
old_al = al.id;
cf.id = int1(0);
cond = int1(0);
if __expr and (al.id & int(al.bit, 0x0f)) > int(al.bit, 9): cond |= int1(1);
if __expr and af.id == int1(1): cond |= int1(1);
if __expr and cond == int1(1):
if __expr and int(al.bit, 0x6) > al.id: cf.id = int1(1)
else: cf.id = old_cf
al.id -= int(al.bit, 0x6)
af.id = int1(1)
else:
af.id = int1(0);
cond = int1(0);
if __expr and old_al > int(al.bit, 0x99): cond |= int1(1);
if __expr and old_cf == int1(1): cond |= int1(1);
if __expr and cond == int1(1):
al.id -= int(al.bit, 0x60)
cf.id = int1(1);
# Start updating ZF
if __expr and al.id == int(al.bit, 0): zf.id = int1(1)
else: zf.id = int1(0);
# Start updating SF
sf.id = bit_cast(al.id >> (int(al.bit, al.bit) - int(al.bit, 1)), int1(1));
# Start updating PF
pf_tmp = int1(1);
pf_tmp ^= bit_cast(al.id >> int(al.bit, 0), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 1), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 2), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 3), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 4), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 5), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 6), int1(1));
pf_tmp ^= bit_cast(al.id >> int(al.bit, 7), int1(1));
pf.id = pf_tmp;
free_var('pf_tmp');
free_var('cond');
free_var('old_cf');
free_var('old_al');
inc: &inc |
alloc_var('op1', op0.bit);
alloc_var('res', op0.bit);
op1.val = int(op0.bit, 1);
res.val = op0.val + op1.val;
call('overflow_flag_add');
call('sign_flag');
call('zero_flag');
call('parity_flag');
call('adjust_flag');
op0.val = res.val;
free_var('op1');
free_var('res');
and: &and |
alloc_var('res', op0.bit);
res = op0.val & op1.val;
of.id = int1(0)
cf.id = int1(0)
call('sign_flag')
call('zero_flag')
call('parity_flag')
op0.val = res;
free_var('res');
or: &or |
alloc_var('res', op0.bit);
res = op0.val | op1.val;
of.id = int1(0)
cf.id = int1(0)
call('sign_flag')
call('zero_flag')
call('parity_flag')
op0.val = res;
free_var('res');
xor: &xor |
alloc_var('res', op0.bit);
res = op0.val ^ op1.val;
of.id = int1(0)
cf.id = int1(0)
call('sign_flag')
call('zero_flag')
call('parity_flag')
op0.val = res;
free_var('res');
xorps: &xorps |
op0.val ^= op1.val;
sub: &sub |
alloc_var('res', op0.bit);
res = op0.val - op1.val;
call('overflow_flag_sub');
call('carry_flag_sub');
call('sign_flag');
call('zero_flag');
call('parity_flag');
call('adjust_flag');
op0.val = res;
free_var('res');
sbb: &sbb |
alloc_var('res', op0.bit);
res = op0.val - op1.val - bit_cast(cf.id, int(op0.bit, op0.bit));
call('overflow_flag_sub');
call('carry_flag_sub');
call('sign_flag');
call('zero_flag');
call('parity_flag');
call('adjust_flag');
op0.val = res.val;
free_var('res');
dec: &dec |
alloc_var('res', op0.bit);
alloc_var('op1', op0.bit);
op1 = int(op0.bit, 1);
res = op0.val - op1;
call('overflow_flag_sub');
call('sign_flag');
call('zero_flag');
call('parity_flag');
call('adjust_flag');
op0.val = res;
free_var('op1');
free_var('res');
neg: &neg |
alloc_var('res', op0.bit);
if __expr and op0.val == int(op0.bit, 0):
cf.id = int1(0)
else:
cf.id = int1(1);
res = -op0.val;
of.id = bit_cast((res.val & op0.val) >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int1(1));
call('sign_flag');
call('zero_flag');
call('parity_flag');
af.id = bit_cast((op0.val ^ res.val) >> (int(op0.bit, 4)), int1(1));
op0.val = res;
free_var('res');
imul1: &imul1 |
alloc_var('res', op0.bit);
alloc_var('mul_res', concat(op0.bit, ignore(' * 2')));
alloc_var('extended', concat(op0.bit, ignore(' * 2')));
if __code and is_byte_operation:
mul_res = sign_extend(al.id, int_type16) * sign_extend(op0.val, int_type16)
ax.id = bit_cast(mul_res, int_type16)
sf.id = bit_cast(mul_res >> int(16, 7), int_type1);
if __code and is_word_operation:
mul_res = sign_extend(ax.id, int_type32) * sign_extend(op0.val, int_type32)
ax.id = bit_cast(mul_res, int_type16)
dx.id = bit_cast(mul_res >> int(32, 16), int_type16)
sf.id = bit_cast(mul_res >> int(32, 15), int_type1);
if __code and is_dword_operation:
mul_res = sign_extend(eax.id, int_type64) * sign_extend(op0.val, int_type64)
eax.id = bit_cast(mul_res, int_type32)
edx.id = bit_cast(mul_res >> int(64, 32), int_type32)
sf.id = bit_cast(mul_res >> int(64, 32), int_type1);
if __code and is_qword_operation:
mul_res = sign_extend(rax.id, int_type128) * sign_extend(op0.val, int_type128)
rax.id = bit_cast(mul_res, int_type64)
rdx.id = bit_cast(mul_res >> int(128, 64), int_type64)
sf.id = bit_cast(mul_res >> int(128, 63), int_type1);
res = bit_cast(mul_res, int_type(op0.bit));
extended = sign_extend(res, int_type(concat(op0.bit, ignore(' * 2'))));
if __expr and extended == mul_res:
of.id = int1(0)
cf.id = int1(0)
else:
of.id = int1(1)
cf.id = int1(1);
free_var('extended');
free_var('mul_res');
free_var('res');
imul2: &imul2 |
alloc_var('res', op0.bit);
alloc_var('mul_res', concat(op0.bit, ignore(' * 2')));
alloc_var('extended', concat(op0.bit, ignore(' * 2')));
mul_res = sign_extend(op0.val, int_type(concat(op0.bit, ignore(' * 2')))) * sign_extend(op1.val, int_type(concat(op0.bit, ignore(' * 2'))));
res = bit_cast(mul_res, int_type(op0.bit));
call('sign_flag');
extended = sign_extend(res, int_type(concat(op0.bit, ignore(' * 2'))));
if __expr and extended == mul_res:
of.id = int1(0)
cf.id = int1(0)
else:
of.id = int1(1)
cf.id = int1(1);
op0.val = res;
free_var('extended');
free_var('mul_res');
free_var('res');
imul3: &imul3 |
alloc_var('res', op0.bit);
alloc_var('mul_res', concat(op0.bit, ignore(' * 2')));
alloc_var('extended', concat(op0.bit, ignore(' * 2')));
mul_res = sign_extend(op1.val, int_type(concat(op0.bit, ignore(' * 2')))) * sign_extend(op2.val, int_type(concat(op0.bit, ignore(' * 2'))));
res = bit_cast(mul_res, int_type(op0.bit));
call('sign_flag');
extended = sign_extend(res, int_type(concat(op0.bit, ignore(' * 2'))));
if __expr and extended == mul_res:
of.id = int1(0)
cf.id = int1(0)
else:
of.id = int1(1)
cf.id = int1(1);
op0.val = res;
free_var('extended');
free_var('mul_res');
free_var('res');
mul: &mul |
alloc_var('upper_res', op0.bit);
alloc_var('mul_res', concat(op0.bit, ignore(' * 2')));
if __code and is_byte_operation:
ax.id = bit_cast(bit_cast(al.id, int_type16) * bit_cast(op0.val, int_type16), int_type16)
upper_res = ah.id;
if __code and is_word_operation:
mul_res = bit_cast(bit_cast(ax.id, int_type32) * bit_cast(op0.val, int_type32), int_type32)
ax.id = bit_cast(mul_res, int_type16)
dx.id = bit_cast(mul_res >> int(32, 16), int_type16)
upper_res = dx.id;
if __code and is_dword_operation:
mul_res = bit_cast(bit_cast(eax.id, int_type64) * bit_cast(op0.val, int_type64), int_type64)
eax.id = bit_cast(mul_res, int_type32)
edx.id = bit_cast(mul_res >> int(64, 32), int_type32)
upper_res = edx.id;
if __code and is_qword_operation:
mul_res = bit_cast(bit_cast(rax.id, int_type128) * bit_cast(op0.val, int_type128), int_type128)
rax.id = bit_cast(mul_res, int_type64)
rdx.id = bit_cast(mul_res >> int(128, 64), int_type64)
upper_res = rdx.id;
if __expr and upper_res == int(op0.bit, 0):
of.id = int1(0)
cf.id = int1(0)
else:
of.id = int1(1)
cf.id = int1(1);
free_var('mul_res');
free_var('upper_res');
idiv: &idiv |
alloc_var('dividend', concat(op0.bit, ignore(' * 2')));
alloc_var('extended', concat(op0.bit, ignore(' * 2')));
extended = sign_extend(op0.val, int_type(concat(op0.bit, ignore(' * 2'))));
if __code and is_byte_operation:
dividend = sign_extend(ax.id, int_type16)
al.id = bit_cast(sdiv(dividend, extended), int_type8)
ah.id = bit_cast(smod(dividend, extended), int_type8);
if __code and is_word_operation:
dividend = sign_extend(dx.id, int_type32) << int(32, 16) | sign_extend(ax.id, int_type32)
ax.id = bit_cast(sdiv(dividend, extended), int_type16)
dx.id = bit_cast(smod(dividend, extended), int_type16);
if __code and is_dword_operation:
dividend = sign_extend(edx.id, int_type64) << int(64, 32) | sign_extend(eax.id, int_type64)
eax.id = bit_cast(sdiv(dividend, extended), int_type32)
edx.id = bit_cast(smod(dividend, extended), int_type32);
if __code and is_qword_operation:
dividend = sign_extend(rdx.id, int_type128) << int(128, 64) | sign_extend(rax.id, int_type128)
rax.id = bit_cast(sdiv(dividend, extended), int_type64)
rdx.id = bit_cast(smod(dividend, extended), int_type64);
free_var('extended');
free_var('dividend');
div: &div |
alloc_var('dividend', concat(op0.bit, ignore(' * 2')));
if __code and is_byte_operation:
dividend = bit_cast(ax.id, int_type16)
al.id = bit_cast(dividend / zero_extend(op0.val, int_type16), int_type8)
ah.id = bit_cast(dividend % zero_extend(op0.val, int_type16), int_type8);
if __code and is_word_operation:
dividend = bit_cast(dx.id, int_type32) << int(32, 16) | bit_cast(ax.id, int_type32)
ax.id = bit_cast(dividend / zero_extend(op0.val, int_type32), int_type16)
dx.id = bit_cast(dividend % zero_extend(op0.val, int_type32), int_type16);
if __code and is_dword_operation:
dividend = bit_cast(edx.id, int_type64) << int(64, 32) | bit_cast(eax.id, int_type64)
eax.id = bit_cast(dividend / zero_extend(op0.val, int_type64), int_type32)
edx.id = bit_cast(dividend % zero_extend(op0.val, int_type64), int_type32);
if __code and is_qword_operation:
dividend = bit_cast(rdx.id, int_type128) << int(128, 64) | bit_cast(rax.id, int_type128)
rax.id = bit_cast(dividend / zero_extend(op0.val, int_type128), int_type64)
rdx.id = bit_cast(dividend % zero_extend(op0.val, int_type128), int_type64);
free_var('dividend');
not: ¬ |
alloc_var('res', op0.bit);
res = ~op0.val;
op0.val = res;
free_var('res');
bswap: &bswap |
if __expr and int(op0.bit, op0.bit) == int(op0.bit, 16): # Handle undefined processor state on 16-bit
op0.val = int(op0.bit, 0)
else:
op0.val = swap(op0.val);
shld: &shld |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
alloc_var('sign_saved', 1);
sign_saved = bit_cast(op0.val >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int1(1));
count = bit_cast(op2.val, int(op0.bit, op0.bit));
call('count_mask');
res = ((op0.val << count) | (op1.val >> (int(op0.bit, op0.bit) - count)));
if __expr and count != int(op0.bit, 0):
cf.id = bit_cast(op0.val >> (int(op0.bit, op0.bit) - count), int1(1))
call('sign_flag')
call('zero_flag')
call('parity_flag');
if __expr and count == int(op0.bit, 1):
of.id = sf.id ^ sign_saved;
op0.val = res;
free_var('sign_saved');
free_var('count');
free_var('res');
shrd: &shrd |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
alloc_var('sign_saved', 1);
sign_saved = bit_cast(op0.val >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int1(1));
count = bit_cast(op2.val, int(op0.bit, op0.bit));
call('count_mask');
res = ((op0.val >> count) | (op1.val << (int(op0.bit, op0.bit) - count)));
if __expr and count != int(op0.bit, 0):
cf.id = bit_cast(op0.val >> (count - int(op0.bit, 1)), int1(1))
call('sign_flag')
call('zero_flag')
call('parity_flag');
if __expr and count == int(op0.bit, 1):
of.id = sf.id ^ sign_saved;
op0.val = res;
free_var('sign_saved');
free_var('count');
free_var('res');
shl: &shl |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
count = bit_cast(op1.val, int(op0.bit, op0.bit));
call('count_mask');
res = op0.val << count;
if __expr and count != int(op0.bit, 0):
cf.id = bit_cast(op0.val >> (int(op0.bit, op0.bit) - count), int1(1))
call('sign_flag')
call('zero_flag')
call('parity_flag');
if __expr and count == int(op0.bit, 1):
of.id = bit_cast((op0.val >> (int(op0.bit, op0.bit) - int(op0.bit, 1))) ^ (op0.val >> (int(op0.bit, op0.bit) - int(op0.bit, 2))), int1(1));
op0.val = res;
free_var('count');
free_var('res');
shr: &shr |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
count = bit_cast(op1.val, int(op0.bit, op0.bit));
call('count_mask');
res = op0.val >> count;
if __expr and count != int(op0.bit, 0):
cf.id = bit_cast(op0.val >> (count - int(op0.bit, 1)), int1(1))
call('sign_flag')
call('zero_flag')
call('parity_flag');
if __expr and count == int(op0.bit, 1):
of.id = bit_cast((op0.val >> (int(op0.bit, op0.bit) - int(op0.bit, 1))), int1(1));
op0.val = res;
free_var('count');
free_var('res');
sal: &sal |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
count = bit_cast(op1.val, int(op0.bit, op0.bit));
call('count_mask');
res = op0.val << count;
if __expr and count != int(op0.bit, 0):
cf.id = bit_cast(op0.val >> (int(op0.bit, op0.bit) - count), int1(1))
call('sign_flag')
call('zero_flag')
call('parity_flag');
if __expr and count == int(op0.bit, 1):
of.id = bit_cast((op0.val >> (int(op0.bit, op0.bit) - int(op0.bit, 1))) ^ (op0.val >> (int(op0.bit, op0.bit) - int(op0.bit, 2))), int1(1));
op0.val = res;
free_var('count');
free_var('res');
sar: &sar |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
count = bit_cast(op1.val, int(op0.bit, op0.bit));
call('count_mask');
res = ars(op0.val, count);
if __expr and count != int(op0.bit, 0):
if __expr and count > int(op0.bit, op0.bit): cf.id = bit_cast(op0.val >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int1(1))
else: cf.id = bit_cast(op0.val >> (count - int(op0.bit, 1)), int1(1))
call('sign_flag')
call('zero_flag')
call('parity_flag');
if __expr and count == int(op0.bit, 1):
of.id = int1(0);
op0.val = res;
free_var('count');
free_var('res');
rol: &rol |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
count = bit_cast(op1.val, int(op0.bit, op0.bit));
call('count_mask');
res = rol(op0.val, count);
if __expr and count != int(op0.bit, 0):
cf.id = bit_cast(res, int_type1);
if __expr and count == int(op0.bit, 1):
of.id = bit_cast(bit_cast(cf.id, int_type(op0.bit)) ^ (res >> (int(op0.bit,op0.bit) - int(op0.bit, 1))), int_type1);
op0.val = res;
free_var('count');
free_var('res');
ror: &ror |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
count = bit_cast(op1.val, int_type(op0.bit));
call('count_mask');
res = ror(op0.val, count);
if __expr and count != int(op0.bit, 0):
cf.id = bit_cast(res >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int_type1);
if __expr and count == int(op0.bit, 1):
of.id = bit_cast((res >> (int(op0.bit, op0.bit) - int(op0.bit, 1))) ^ (res >> (int(op0.bit, op0.bit) - int(op0.bit, 2))), int_type1);
op0.val = res;
free_var('count');
free_var('res');
rcl: &rcl |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
count = bit_cast(op1.val, int_type(op0.bit));
call('count_mask');
alloc_var('rol_val', concat(op0.bit, ignore(' + 1')));
rol_val = bit_cast(op0.val, int_type(concat(op0.bit, ignore(' + 1'))));
rol_val |= (bit_cast(cf.id, int_type(concat(op0.bit, ignore(' + 1')))) << int(concat(op0.bit, ignore(' + 1')), op0.bit));
rol_val = rol(rol_val, bit_cast(count, int_type(concat(op0.bit, ignore(' + 1')))));
res = bit_cast(rol_val, int_type(op0.bit));
if __expr and count != int(op0.bit, 0):
cf.id = bit_cast(rol_val >> int(concat(op0.bit, ignore(' + 1')), op0.bit), int_type1);
if __expr and count == int(op0.bit, 1):
of.id = bit_cast(cf.id ^ bit_cast(res >> (int(op0.bit, op0.bit) - int(op0.bit, 1)), int_type1), int_type1);
op0.val = res;
free_var('rol_val');
free_var('count');
free_var('res');
rcr: &rcr |
alloc_var('res', op0.bit);
alloc_var('count', op0.bit);
count = bit_cast(op1.val, int(op0.bit, op0.bit));
call('count_mask');
alloc_var('ror_val', concat(op0.bit, ignore(' + 1')));
ror_val = bit_cast(op0.val, int_type(concat(op0.bit, ignore(' + 1'))));
ror_val |= (bit_cast(cf.id, int_type(concat(op0.bit, ignore(' + 1')))) << int(concat(op0.bit, ignore(' + 1')), op0.bit));
ror_val = ror(ror_val, bit_cast(count, int_type(concat(op0.bit, ignore(' + 1')))));
res = bit_cast(ror_val, int_type(op0.bit));
if __expr and count != int(op0.bit, 0):
cf.id = bit_cast(ror_val >> int(concat(op0.bit, ignore(' + 1')), op0.bit), int_type1);
if __expr and count == int(op0.bit, 1):
of.id = bit_cast((res >> (int(op0.bit, op0.bit) - int(op0.bit, 1))) ^ (res >> (int(op0.bit, op0.bit) - int(op0.bit, 2))), int_type1);
op0.val = res;
free_var('ror_val');
free_var('count');
free_var('res');
xadd: &xadd |
alloc_var('res', op0.bit);
alloc_var('tmp_val', op0.bit);
tmp_val = op0.val;
op0.val = op1.val;
op1.val = tmp_val;
res = op1.val + op0.val;
call('overflow_flag_add');
call('carry_flag_add');
call('sign_flag');
call('zero_flag');
call('parity_flag');
call('adjust_flag');
op0.val = res;
free_var('res');
free_var('tmp_val');
cdqe: &cdqe |
rax.id = sign_extend(eax.id, int(rax.bit, rax.bit));
cwde: &cwde |
eax.id = sign_extend(ax.id, int(eax.bit, eax.bit));
cbw: &cbw |
ax.id = sign_extend(al.id, int(ax.bit, ax.bit));
## Data transfer
mov: &mov |
op0.val = op1.val;
movzx: &movzx |
op0.val = zero_extend(op1.val, int(op0.bit, op0.bit));
movsx: &movsx |
op0.val = sign_extend(op1.val, int(op0.bit, op0.bit));
movsd: &movsd |
alloc_var('tmp_val', op0.bit);
if __code and is_id_and_mem(op0, op1):
op0.val = bit_cast(op1.val, int_type128);
if __code and is_mem_and_id(op0, op1):
op0.val = bit_cast(op1.val, int_type64);
if __code and is_id_and_id(op0, op1):
tmp_val = op0.val >> int(op0.bit, 64)
tmp_val = tmp_val << int(op0.bit, 64)
tmp_val += bit_cast(op1.val, int_type64)
op0.val = tmp_val;
free_var('tmp_val');
movss: &movss |
alloc_var('tmp_val', op0.bit);
if __code and is_id_and_mem(op0, op1):
op0.val = bit_cast(op1.val, int_type128);
if __code and is_mem_and_id(op0, op1):
tmp_val = op0.val >> int(op0.bit, 32)
tmp_val = tmp_val << int(op0.bit, 32)
tmp_val += bit_cast(op1.val, int_type32)
op0.val = tmp_val;
if __code and is_id_and_id(op0, op1):
tmp_val = op0.val >> int(op0.bit, 32)
tmp_val = tmp_val << int(op0.bit, 32)
tmp_val += bit_cast(op1.val, int_type32)
op0.val = tmp_val;
free_var('tmp_val');
movd_sse: &movd_sse |
if __code and is_dword_operation:
op0.val = bit_cast(op1.val, int_type32);
if __code and is_oword_operation:
op0.val = bit_cast(op1.val, int_type128);
# TODO: http://www.felixcloutier.com/x86/CMPXCHG8B:CMPXCHG16B.html
cmpxchg8b: &cmpxchg8b
[
]
# TODO: ditto
cmpxchg16b: &cmpxchg16b
[
]
## Stack operations
push: &push |
alloc_var('pushed_value', stack.bit);
pushed_value = sign_extend(op0.val, int(stack.bit, stack.bit));
stack.id -= stack.size;
stack.mem = pushed_value;
free_var('pushed_value');
# http://en.wikipedia.org/wiki/FLAGS_register
# TODO(KS): interrupt flag
pushf: &pushf |
stack.id -= stack.size;
stack.mem =\
( bit_cast(cf.id, int(stack.bit, stack.bit))
| (int64(1) << int(stack.bit, 1))
| (bit_cast(pf.id, int(stack.bit, stack.bit)) << int(stack.bit, 2))
| (bit_cast(af.id, int(stack.bit, stack.bit)) << int(stack.bit, 4))
| (bit_cast(zf.id, int(stack.bit, stack.bit)) << int(stack.bit, 6))
| (bit_cast(sf.id, int(stack.bit, stack.bit)) << int(stack.bit, 7))
| (bit_cast(tf.id, int(stack.bit, stack.bit)) << int(stack.bit, 8))
| (int64(1) << int(stack.bit, 9))
| (bit_cast(df.id, int(stack.bit, stack.bit)) << int(stack.bit, 10))
| (bit_cast(of.id, int(stack.bit, stack.bit)) << int(stack.bit, 11)));
pusha: &pusha |
stack.id -= int16(2);stack.mem = ax.id;
stack.id -= int16(2);stack.mem = cx.id;
stack.id -= int16(2);stack.mem = dx.id;
stack.id -= int16(2);stack.mem = bx.id;
stack.id -= int16(2);stack.mem = sp.id + int16(8);
stack.id -= int16(2);stack.mem = bp.id;
stack.id -= int16(2);stack.mem = si.id;
stack.id -= int16(2);stack.mem = di.id;
pushad: &pushad |
stack.id -= int32(4);stack.mem = eax.id;
stack.id -= int32(4);stack.mem = ecx.id;
stack.id -= int32(4);stack.mem = edx.id;
stack.id -= int32(4);stack.mem = ebx.id;
stack.id -= int32(4);stack.mem = esp.id + int32(16);
stack.id -= int32(4);stack.mem = ebp.id;
stack.id -= int32(4);stack.mem = esi.id;
stack.id -= int32(4);stack.mem = edi.id;
pop: &pop |
alloc_var('popped_value', stack.bit);
popped_value = stack.mem;
stack.id += stack.size;
op0.val = popped_value;
free_var('popped_value');
# TODO(KS): see pushf
popf: &popf |
alloc_var('flags', stack.bit);
flags = stack.mem;
stack.id += stack.size;
cf.id = bit_cast(flags, int1(1));
pf.id = bit_cast((flags >> int(stack.bit, 2)), int1(1));
af.id = bit_cast((flags >> int(stack.bit, 4)), int1(1));
zf.id = bit_cast((flags >> int(stack.bit, 6)), int1(1));
sf.id = bit_cast((flags >> int(stack.bit, 7)), int1(1));
tf.id = bit_cast((flags >> int(stack.bit, 8)), int1(1));
df.id = bit_cast((flags >> int(stack.bit, 10)), int1(1));
of.id = bit_cast((flags >> int(stack.bit, 11)), int1(1));
free_var('flags');
popa: &popa |
di.id = stack.mem;stack.id += int16(2);
si.id = stack.mem;stack.id += int16(2);
bp.id = stack.mem;stack.id += int16(2);
sp.id = stack.mem;stack.id += int16(2);
bx.id = stack.mem;stack.id += int16(2);
dx.id = stack.mem;stack.id += int16(2);
cx.id = stack.mem;stack.id += int16(2);
ax.id = stack.mem;stack.id += int16(2);
popad: &popad |
edi.id = stack.mem;stack.id += int32(4);
esi.id = stack.mem;stack.id += int32(4);
ebp.id = stack.mem;stack.id += int32(4);
esp.id = stack.mem;stack.id += int32(4);
ebx.id = stack.mem;stack.id += int32(4);
edx.id = stack.mem;stack.id += int32(4);
ecx.id = stack.mem;stack.id += int32(4);
eax.id = stack.mem;stack.id += int32(4);
## Control flow operations
jmp: &jmp |
program.id = op0.val;
call: &call |
alloc_var('call_dst', stack.bit);
call_dst = op0.val;
stack.id -= stack.size;
stack.mem = program.id;
program.id = call_dst;
free_var('call_dst');
ret: &ret |
program.id = stack.mem;
stack.id += stack.size;
retn: &retn |
program.id = stack.mem;
stack.id += stack.size;
stack.id += bit_cast(op0.val, int(stack.bit, stack.bit));
nop: &nop |
program.id = program.id;
xchg: &xchg |
alloc_var('tmp_val', op0.bit);
tmp_val = op0.val;
op0.val = op1.val;
op1.val = tmp_val;
free_var('tmp_val');
# FIXME: not done http://faydoc.tripod.com/cpu/cmpxchg.htm
cmpxchg: &cmpxchg |
if __expr and op0.val == acc.id:
zf.id = int1(1)
else:
zf.id = int1(0);
if __expr and zf.id == int1(1):
op0.val = op1.val;
loop: &loop |
cnt.id -= int(cnt.bit, 1);
if __expr and cnt.id != int(cnt.bit, 0):
program.id = op0.val;
loopz: &loopz |
cnt.id -= int(cnt.bit, 1);
if __expr and (cnt.id | zf.id) != int(cnt.bit, 0):
program.id = op0.val;
loopnz: &loopnz |
cnt.id -= int(cnt.bit, 1);
if __expr and (zf.id ^ int(cnt.bit, 1) & cnt.id) != int(cnt.bit, 0):
program.id = op0.val;
jcntz: &jcntz |
if __expr and cnt.id == int(cnt.bit, 0):
program.id = op0.val;
## String operations