fix int 21h ah=4c

angr · Jun 9, 2024 · fac2ccb · fac2ccb
1 parent 0494564
commit fac2ccb
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/angr_platforms/X86_16/instr_base.py b/angr_platforms/X86_16/instr_base.py
@@ -404,8 +404,8 @@ def int3(self) -> None:
 
     def int_imm8(self) -> None:
         self.emu.lifter_instruction.put(self.emu.constant(self.instr.imm8), "ip_at_syscall")
-        exit = self.instr.imm8 == 0x21 and self.emu.get_gpreg(reg8_t.AH) == 0x4c
-        self.emu.lifter_instruction.jump(not exit, self.emu.get_gpreg(reg8_t.AL), JumpKind.Exit)
+        exit = self.emu.constant(self.instr.imm8 == 0x21) and self.emu.get_gpreg(reg8_t.AH) == 0x4c
+        self.emu.lifter_instruction.jump(~exit, self.emu.get_gpreg(reg8_t.AL), JumpKind.Exit)
         self.emu.lifter_instruction.jump(None, self.emu.get_gpreg(reg16_t.AX), JumpKind.Syscall)
         #raise Exception("INT %x" % self.instr.imm8)
         #self.emu.queue_interrupt(self.instr.imm8, False)