found and implemented the movw, but not for pi :-(
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@ -51,6 +51,14 @@ module Arm
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operand = op_with_rot
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immediate = 1
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else
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# unfortunately i was wrong in thinking the pi is armv7. The good news is the code below implements
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# the movw (armv7) instruciton and works
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#armv7 raise "Too big #{right.integer} " if (right.integer >> 16) > 0
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#armv7 operand = (right.integer & 0xFFF)
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#armv7 immediate = 1
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#armv7 rn = (right.integer >> 12)
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# a little STRANGE, that the armv7 movw (move a 2 byte word) is an old test opcode, but there it is
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#armv7 @attributes[:opcode] = :tst
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raise "No negatives implemented " if right.integer < 0
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# and so it continues: when we notice that the const doesn't fit, first time we raise an
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# error,but set the extra flag, to say the instruction is now 8 bytes
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