Arch/x86/sem: add fcmovcc

1 files changed, 88 insertions, 0 deletions

diff --git a/miasm2/arch/x86/sem.py b/miasm2/arch/x86/sem.py
index f3ede000..f9204b6b 100644
--- a/miasm2/arch/x86/sem.py
+++ b/miasm2/arch/x86/sem.py
@@ -2448,6 +2448,86 @@ def fwait(ir, instr):
     return [], None
 
 
+def fcmovb(ir, instr, a, b):
+    e = []
+    lbl_do = m2_expr.ExprId(ir.gen_label(), instr.mode)
+    lbl_skip = m2_expr.ExprId(ir.get_next_label(instr), instr.mode)
+    e_do, extra_irs = [m2_expr.ExprAff(a, b)], []
+    e_do.append(m2_expr.ExprAff(ir.IRDst, lbl_skip))
+    e.append(m2_expr.ExprAff(ir.IRDst, m2_expr.ExprCond(cf, lbl_do, lbl_skip)))
+    return e, [irbloc(lbl_do.name, [e_do])]
+
+
+def fcmove(ir, instr, a, b):
+    e = []
+    lbl_do = m2_expr.ExprId(ir.gen_label(), instr.mode)
+    lbl_skip = m2_expr.ExprId(ir.get_next_label(instr), instr.mode)
+    e_do, extra_irs = [m2_expr.ExprAff(a, b)], []
+    e_do.append(m2_expr.ExprAff(ir.IRDst, lbl_skip))
+    e.append(m2_expr.ExprAff(ir.IRDst, m2_expr.ExprCond(zf, lbl_do, lbl_skip)))
+    return e, [irbloc(lbl_do.name, [e_do])]
+
+
+def fcmovbe(ir, instr, a, b):
+    e = []
+    lbl_do = m2_expr.ExprId(ir.gen_label(), instr.mode)
+    lbl_skip = m2_expr.ExprId(ir.get_next_label(instr), instr.mode)
+    e_do, extra_irs = [m2_expr.ExprAff(a, b)], []
+    e_do.append(m2_expr.ExprAff(ir.IRDst, lbl_skip))
+    e.append(m2_expr.ExprAff(ir.IRDst, m2_expr.ExprCond(cf | zf, lbl_do, lbl_skip)))
+    return e, [irbloc(lbl_do.name, [e_do])]
+
+
+def fcmovu(ir, instr, a, b):
+    e = []
+    lbl_do = m2_expr.ExprId(ir.gen_label(), instr.mode)
+    lbl_skip = m2_expr.ExprId(ir.get_next_label(instr), instr.mode)
+    e_do, extra_irs = [m2_expr.ExprAff(a, b)], []
+    e_do.append(m2_expr.ExprAff(ir.IRDst, lbl_skip))
+    e.append(m2_expr.ExprAff(ir.IRDst, m2_expr.ExprCond(pf, lbl_do, lbl_skip)))
+    return e, [irbloc(lbl_do.name, [e_do])]
+
+
+def fcmovnb(ir, instr, a, b):
+    e = []
+    lbl_do = m2_expr.ExprId(ir.gen_label(), instr.mode)
+    lbl_skip = m2_expr.ExprId(ir.get_next_label(instr), instr.mode)
+    e_do, extra_irs = [m2_expr.ExprAff(a, b)], []
+    e_do.append(m2_expr.ExprAff(ir.IRDst, lbl_skip))
+    e.append(m2_expr.ExprAff(ir.IRDst, m2_expr.ExprCond(cf, lbl_skip, lbl_do)))
+    return e, [irbloc(lbl_do.name, [e_do])]
+
+
+def fcmovne(ir, instr, a, b):
+    e = []
+    lbl_do = m2_expr.ExprId(ir.gen_label(), instr.mode)
+    lbl_skip = m2_expr.ExprId(ir.get_next_label(instr), instr.mode)
+    e_do, extra_irs = [m2_expr.ExprAff(a, b)], []
+    e_do.append(m2_expr.ExprAff(ir.IRDst, lbl_skip))
+    e.append(m2_expr.ExprAff(ir.IRDst, m2_expr.ExprCond(zf, lbl_skip, lbl_do)))
+    return e, [irbloc(lbl_do.name, [e_do])]
+
+
+def fcmovnbe(ir, instr, a, b):
+    e = []
+    lbl_do = m2_expr.ExprId(ir.gen_label(), instr.mode)
+    lbl_skip = m2_expr.ExprId(ir.get_next_label(instr), instr.mode)
+    e_do, extra_irs = [m2_expr.ExprAff(a, b)], []
+    e_do.append(m2_expr.ExprAff(ir.IRDst, lbl_skip))
+    e.append(m2_expr.ExprAff(ir.IRDst, m2_expr.ExprCond(cf | zf, lbl_skip, lbl_do)))
+    return e, [irbloc(lbl_do.name, [e_do])]
+
+
+def fcmovnu(ir, instr, a, b):
+    e = []
+    lbl_do = m2_expr.ExprId(ir.gen_label(), instr.mode)
+    lbl_skip = m2_expr.ExprId(ir.get_next_label(instr), instr.mode)
+    e_do, extra_irs = [m2_expr.ExprAff(a, b)], []
+    e_do.append(m2_expr.ExprAff(ir.IRDst, lbl_skip))
+    e.append(m2_expr.ExprAff(ir.IRDst, m2_expr.ExprCond(pf, lbl_skip, lbl_do)))
+    return e, [irbloc(lbl_do.name, [e_do])]
+
+
 def nop(ir, instr, a=None):
     return [], []
 
@@ -3636,6 +3716,14 @@ mnemo_func = {'mov': mov,
               'fnstcw': fnstcw,
               'fldcw': fldcw,
               'fwait': fwait,
+              'fcmovb':   fcmovb,
+              'fcmove':   fcmove,
+              'fcmovbe':  fcmovbe,
+              'fcmovu':   fcmovu,
+              'fcmovnb':  fcmovnb,
+              'fcmovne':  fcmovne,
+              'fcmovnbe': fcmovnbe,
+              'fcmovnu':  fcmovnu,
               'fnstenv': fnstenv,
               'sidt': sidt,
               'sldt': sldt,