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(semi) proper fix for large moves, integers or virtual constants(was buggy)

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This commit is contained in:
Torsten Ruger
2014-09-30 12:07:21 +03:00
parent 527e591e75
commit fba66371c0
2 changed files with 44 additions and 20 deletions
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32
test/arm/test_move.rb
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@ -4,12 +4,12 @@ class TestMoves < MiniTest::Test
include ArmHelper
def test_mov
code = @machine.mov :r0, 5
assert_code code , :mov , [0x05,0x00,0xa0,0xe3] #e3 a0 10 05
code = @machine.mov :r1, 5
assert_code code , :mov , [0x05,0x10,0xa0,0xe3] #e3 a0 10 05
end
def test_mov_pc
code = @machine.mov :pc, 6
assert_code code , :mov , [0x06,0xf0,0xa0,0xe3] #e3 a0 f0 06
code = @machine.mov :pc, 5
assert_code code , :mov , [0x05,0xf0,0xa0,0xe3] #e3 a0 f0 06
end
def test_mov_256
code = @machine.mov :r1, 256
@ -20,10 +20,10 @@ class TestMoves < MiniTest::Test
assert_code code , :mov , [0x80,0x10,0xa0,0xe3] #e3 a0 10 80
end
def test_mov_big
code = @machine.mov :r0, 0x222
code = @machine.mov :r0, 0x222 # is not 8 bit and can't be rotated by the arm system in one instruction
code.set_position(0)
begin #TODO use compiler to confirm codes here: this is just what passes
assert_code code , :mov , [ 0x02,0x00,0xa0,0xe3 , 0xff,0x04,0x80,0xe2]
begin # mov 512(0x200) = e3 a0 0c 02 add 34(0x22) = e2 80 00 22
assert_code code , :mov , [ 0x02,0x0c,0xa0,0xe3 , 0x22,0x00,0x80,0xe2]
rescue Register::LinkException
retry
end
@ -32,4 +32,22 @@ class TestMoves < MiniTest::Test
code = @machine.mvn :r1, 5
assert_code code , :mvn , [0x05,0x10,0xe0,0xe3] #e3 e0 10 05
end
def test_constant_small # like test_mov
const = Virtual::ObjectConstant.new
const.set_position( 13 ) # 13 = 5 + 8 , 8 for the arm pipeline offset, gets subtracted
code = @machine.mov :r1 , const
code.set_position(0)
assert_code code , :mov , [0x05,0x10,0xaf,0xe3] #e3 ef 10 05
end
def test_constant_big # like test_mov_big
const = Virtual::ObjectConstant.new
const.set_position( 0x222 )
code = @machine.mov :r0 , const
code.set_position(0)
begin # mov 512(0x200) = e3 a0 0c 02 add 34(0x22) = e2 80 00 22
assert_code code , :mov , [ 0x02,0x0c,0xa0,0xe3 , 0x22,0x00,0x80,0xe2]
rescue Register::LinkException
retry
end
end
end