27 lines
979 B
Ruby
27 lines
979 B
Ruby
require_relative 'helper'
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class TestControl < MiniTest::Test
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include ArmHelper
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def test_b
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# the address is what an assembler calculates (a signed number for the amount of instructions),
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# ie the relative (to pc) address -8 (pipeline) /4 so save space
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# so the cpu adds the value*4 and starts loading that (load, decode, execute)
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code = @machine.b( -4 ) #this jumps to the next instruction
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assert_code code , :b , [0xff,0xff,0xff,0xea] #ea ff ff fe
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end
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def test_call #see comment above. bx not implemented (as it means into thumb, and no thumb here)
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code = @machine.call( -4 ,{} )#this jumps to the next instruction
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assert_code code , :call, [0xff,0xff,0xff,0xeb] #ea ff ff fe
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end
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def test_swi
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code = @machine.swi( 0x05 )
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assert_code code , :swi , [0x05,0x00,0x00,0xef]#ef 00 00 05
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end
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def test_swi_neg
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assert_raises(RuntimeError) do
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assert_code @machine.swi("0x05") , :swi , [0x05,0x00,0x00,0xef]
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end
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end
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end
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