32 lines
902 B
Ruby
32 lines
902 B
Ruby
require_relative 'helper'
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# test the generation of a whole program
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# not many asserts, but assume all is well (ho ho)
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# linking and running does not produce seqmentation fault, ie it works
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# moving on to calling external functions to get some output
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class TestSmallProg < MiniTest::Test
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# need a code generator, for arm
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def setup
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@generator = Asm::Arm::CodeGenerator.new
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end
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def test_generate_small
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@generator.instance_eval {
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mov r0, 5 #1
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loop_start = label
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loop_start.set!
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subs r0, r0, 1 #2
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bne loop_start #3
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mov r7, 1 #4
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swi 0 #5 5 instruction x 4 == 20
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}
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writer = Asm::ObjectWriter.new(Elf::Constants::TARGET_ARM)
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assembly = @generator.assemble
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assert_equal 20 , assembly.length
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writer.set_text assembly
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writer.save('small_test.o')
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end
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end
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