diff options
Diffstat (limited to 'miasm2/arch/x86/sem.py')
| -rw-r--r-- | miasm2/arch/x86/sem.py | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/miasm2/arch/x86/sem.py b/miasm2/arch/x86/sem.py index 56aca1c2..deebba8c 100644 --- a/miasm2/arch/x86/sem.py +++ b/miasm2/arch/x86/sem.py @@ -1614,22 +1614,25 @@ def imul(_, instr, src1, src2=None, src3=None): def cbw(_, instr): + # Only in 16 bit e = [] - tempAL = mRAX[instr.mode][:8] - tempAX = mRAX[instr.mode][:16] + tempAL = mRAX[instr.v_opmode()][:8] + tempAX = mRAX[instr.v_opmode()][:16] e.append(m2_expr.ExprAff(tempAX, tempAL.signExtend(16))) return e, [] def cwde(_, instr): + # Only in 32/64 bit e = [] - tempAX = mRAX[instr.mode][:16] - tempEAX = mRAX[instr.mode][:32] + tempAX = mRAX[instr.v_opmode()][:16] + tempEAX = mRAX[instr.v_opmode()][:32] e.append(m2_expr.ExprAff(tempEAX, tempAX.signExtend(32))) return e, [] def cdqe(_, instr): + # Only in 64 bit e = [] tempEAX = mRAX[instr.mode][:32] tempRAX = mRAX[instr.mode][:64] @@ -1638,32 +1641,34 @@ def cdqe(_, instr): def cwd(_, instr): + # Only in 16 bit e = [] tempAX = mRAX[instr.mode][:16] tempDX = mRDX[instr.mode][:16] - c = tempAX.signExtend(32) - e.append(m2_expr.ExprAff(tempAX, c[:16])) - e.append(m2_expr.ExprAff(tempDX, c[16:32])) + result = tempAX.signExtend(32) + e.append(m2_expr.ExprAff(tempAX, result[:16])) + e.append(m2_expr.ExprAff(tempDX, result[16:32])) return e, [] def cdq(_, instr): + # Only in 32/64 bit e = [] - tempEAX = mRAX[instr.mode][:32] - tempEDX = mRDX[instr.mode][:32] - c = tempEAX.signExtend(64) - e.append(m2_expr.ExprAff(tempEAX, c[:32])) - e.append(m2_expr.ExprAff(tempEDX, c[32:64])) + tempEAX = mRAX[instr.v_opmode()] + tempEDX = mRDX[instr.v_opmode()] + result = tempEAX.signExtend(64) + e.append(m2_expr.ExprAff(tempEDX, result[32:64])) return e, [] def cqo(_, instr): + # Only in 64 bit e = [] tempRAX = mRAX[instr.mode][:64] tempRDX = mRDX[instr.mode][:64] - c = tempRAX.signExtend(128) - e.append(m2_expr.ExprAff(tempRAX, c[:64])) - e.append(m2_expr.ExprAff(tempRDX, c[64:128])) + result = tempRAX.signExtend(128) + e.append(m2_expr.ExprAff(tempRAX, result[:64])) + e.append(m2_expr.ExprAff(tempRDX, result[64:128])) return e, [] |