Class: Unarm::Ins

Inherits:
Object
  • Object
show all
Includes:
UnarmBind
Defined in:
lib/unarm/unarm.rb

Direct Known Subclasses

ArmIns, ThumbIns

Constant Summary

Constants included from UnarmBind

UnarmBind::ARGUMENT_KIND, UnarmBind::ARGUMENT_KIND_MAP, UnarmBind::Arg, UnarmBind::Args, UnarmBind::CONDITION, UnarmBind::CONDITION_MAP, UnarmBind::CO_REG, UnarmBind::CO_REG_MAP, UnarmBind::ENDIAN, UnarmBind::ENDIAN_MAP, UnarmBind::OPCODE, UnarmBind::OPCODE_MNEMONIC, UnarmBind::REGISTER, UnarmBind::REGISTER_MAP, UnarmBind::SHIFT, UnarmBind::SHIFT_MAP, UnarmBind::STATUS_REG, UnarmBind::STATUS_REG_MAP

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#address ⇒ Object (readonly) Also known as: addr

Returns the value of attribute address.



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# File 'lib/unarm/unarm.rb', line 614

def address
  @address
end

#arguments ⇒ Object (readonly) Also known as: args

Returns the value of attribute arguments.



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# File 'lib/unarm/unarm.rb', line 614

def arguments
  @arguments
end

#raw ⇒ Object (readonly)

Returns the value of attribute raw.



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# File 'lib/unarm/unarm.rb', line 614

def raw
  @raw
end

Instance Method Details

#branch_destination ⇒ Object Also known as: branch_dest 



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# File 'lib/unarm/unarm.rb', line 671

def branch_destination
  arg = @arguments.find {|a| a.kind == :branch_dest}
  return nil if !arg
  arg.value + @address
end

#branch_to_register? ⇒ Boolean Also known as: branch_to_reg?

Returns:

  • (Boolean) 


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# File 'lib/unarm/unarm.rb', line 687

def branch_to_register?
  opcode == :bx ||
    (mnemonic == 'mov' && args[0].value.reg == :pc) || (mnemonic == 'ldr' && args[0].value.reg == :pc)
end

#eql?(other) ⇒ Boolean Also known as: ==

Returns:

  • (Boolean) 


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# File 'lib/unarm/unarm.rb', line 629

def eql?(other)
  @raw == other.raw
end

#function_end? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/unarm/unarm.rb', line 693

def function_end?
  return false if conditional?

  branch_to_register? ||
    (mnemonic == 'pop' && args[0].value.contains?(:pc)) ||
    (mnemonic == 'ldm' && args[0].value.reg == :sp && args[1].value.contains?(:pc))
end

#has_imod? ⇒ Boolean

does instruction modify interrupt flags?

Returns:

  • (Boolean) 


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# File 'lib/unarm/unarm.rb', line 667

def has_imod? # does instruction modify interrupt flags?
  opcode == :cps
end

#is_conditional? ⇒ Boolean Also known as: conditional?

Returns:

  • (Boolean) 


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# File 'lib/unarm/unarm.rb', line 642

def is_conditional?
  @conditional
end

#is_data_operation? ⇒ Boolean Also known as: is_data_op?

Returns:

  • (Boolean) 


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# File 'lib/unarm/unarm.rb', line 652

def is_data_operation?
  @data_op
end

#is_illegal? ⇒ Boolean Also known as: illegal?

Returns:

  • (Boolean) 


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# File 'lib/unarm/unarm.rb', line 657

def is_illegal?
  opcode == :illegal
end

#is_unconditional? ⇒ Boolean Also known as: unconditional?

Returns:

  • (Boolean) 


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# File 'lib/unarm/unarm.rb', line 647

def is_unconditional?
  !@conditional
end

#mnemonic ⇒ Object 



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# File 'lib/unarm/unarm.rb', line 638

def mnemonic
  UnarmBind::OPCODE_MNEMONIC[@opcode_id]
end

#opcode ⇒ Object 



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# File 'lib/unarm/unarm.rb', line 634

def opcode
  UnarmBind::OPCODE[@opcode_id]
end

#sets_flags? ⇒ Boolean Also known as: updates_condition_flags?

Returns:

  • (Boolean) 


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# File 'lib/unarm/unarm.rb', line 662

def sets_flags?
  @sets_flags
end

#size ⇒ Object Also known as: ins_size 



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# File 'lib/unarm/unarm.rb', line 619

def size
  @@size
end

#string ⇒ Object Also known as: str 



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# File 'lib/unarm/unarm.rb', line 624

def string
  @str.to_s
end

#target_address ⇒ Object Also known as: target_addr 



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# File 'lib/unarm/unarm.rb', line 678

def target_address
  if opcode == :ldr && args[1].kind == :reg && args[1].value.reg == :pc && args[2].kind == :offset_imm
    address + args[2].value.value + 8
  else
    nil
  end
end