54 lines
1.7 KiB
Ruby
54 lines
1.7 KiB
Ruby
require_relative 'helper'
|
|
|
|
# test the generation of a whole program
|
|
# not many asserts, but assume all is well (ho ho)
|
|
# linking and running does not produce seqmentation fault, ie it works
|
|
# should really thiink about more asserts (but currently no way to execute as still running on mac )
|
|
# (have to fix the int being used in code generation as ruby int is only 31 bits, and that wont do)
|
|
|
|
class TestSmallProg < MiniTest::Test
|
|
# need a code generator, for arm
|
|
def setup
|
|
@generator = Asm::Arm::ArmAssembler.new
|
|
end
|
|
|
|
def test_generate_small
|
|
@generator.instance_eval {
|
|
mov r0, 5 #1
|
|
loop_start = label!
|
|
subs r0, r0, 1 #2
|
|
bne loop_start #3
|
|
mov r7, 1 #4
|
|
swi 0 #5 5 instructions
|
|
}
|
|
write( 5 , "small" )
|
|
end
|
|
|
|
#test dropped along with functionality, didn't work and not needed (yet?) TODO
|
|
def no_test_extern
|
|
@generator.instance_eval {
|
|
mov r0 , 50 #1
|
|
push lr #2
|
|
bl extern(:putchar) #3
|
|
pop pc #4
|
|
mov r7, 1 #5
|
|
swi 0 #6 6 instructions
|
|
}
|
|
#this actually seems to get an extern symbol out there and linker is ok (but doesnt run, hmm)
|
|
@generator.relocations.each { |reloc|
|
|
#puts "reloc #{reloc.inspect}"
|
|
writer.add_reloc_symbol reloc.label.name.to_s
|
|
}
|
|
write( 6 , "extern")
|
|
end
|
|
|
|
#helper to write the file
|
|
def write len ,name
|
|
writer = Asm::ObjectWriter.new(Elf::Constants::TARGET_ARM)
|
|
assembly = @generator.assemble_to_string
|
|
assert_equal len * 4 , assembly.length
|
|
writer.set_text assembly
|
|
writer.save("#{name}_test.o")
|
|
end
|
|
end
|