55 lines
1.4 KiB
Ruby
55 lines
1.4 KiB
Ruby
require_relative "../helper"
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# try to test that the generation of basic instructions works
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# one instruction at a time, reverse testing from objdump --demangle -Sfghxp
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# tests are named as per assembler code, ie test_mov testing mov instruction
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module Arm
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class FakeBin
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def byte_length
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4
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end
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def is_a?(_)
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true
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end
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end
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class FakeInt
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attr_reader :value
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def initialize(val)
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set_value(val)
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end
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def is_a?(clazz)
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clazz == Parfait::Integer
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end
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def byte_length
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4
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end
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def set_value(val)
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@value = val
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end
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end
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module ArmHelper
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def setup
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@machine = Arm::ArmMachine
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@binary = FakeBin.new
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Risc::Position.clear_positions
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Risc::Position.set(@binary , 0)
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end
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# code is what the generator spits out, at least one instruction worth (.first)
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# the op code is wat was witten as assembler in the first place and the binary result
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def assert_code( code , op , should )
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assert_equal op , code.opcode
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io = StringIO.new
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code.assemble(io)
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binary = io.string
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assert_equal should.length , binary.length , "code length wrong for #{code.inspect}"
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index = 0
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binary.each_byte do |byte |
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assert_equal should[index] , byte , "byte #{index} 0x#{should[index].to_s(16)} != 0x#{byte.to_s(16)}"
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index += 1
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end
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end
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end
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end
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