diff options
Diffstat (limited to 'miasm/arch/x86/sem.py')
| -rw-r--r-- | miasm/arch/x86/sem.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/miasm/arch/x86/sem.py b/miasm/arch/x86/sem.py index 15db7424..c4120566 100644 --- a/miasm/arch/x86/sem.py +++ b/miasm/arch/x86/sem.py @@ -4417,6 +4417,23 @@ def bextr(_, instr, dst, src1, src2): e.append(m2_expr.ExprAssign(dst, result)) return e, [] +def blsmsk(_, instr, dst, src): + e = [] + + tmp = src - m2_expr.ExprInt(1, src.size) + result = src ^ tmp + + e += update_flag_nf(result) + e.append(m2_expr.ExprAssign(of, m2_expr.ExprInt(0, of.size))) + e.append(m2_expr.ExprAssign(zf, m2_expr.ExprInt(0, zf.size))) + + e.append(m2_expr.ExprAssign(cf, m2_expr.ExprCond(src, + m2_expr.ExprInt(0, 1), + m2_expr.ExprInt(1, 1)))) + + e.append(m2_expr.ExprAssign(dst, result)) + return e, [] + def pshufb(_, instr, dst, src): e = [] if dst.size == 64: @@ -5551,6 +5568,7 @@ mnemo_func = {'mov': mov, "blsi": blsi, "andn": andn, "bextr": bextr, + "blsmsk": blsmsk, # # MMX/AVX/SSE operations |