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found and implemented the movw, but not for pi :-(

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This commit is contained in:
Torsten Ruger 2014-09-29 20:26:55 +03:00
parent d8710de590
commit 7d52e71f5c
1 changed files with 8 additions and 0 deletions
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8
lib/arm/move_instruction.rb
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@ -51,6 +51,14 @@ module Arm
operand = op_with_rot operand = op_with_rot
immediate = 1 immediate = 1
else else
# unfortunately i was wrong in thinking the pi is armv7. The good news is the code below implements
# the movw (armv7) instruciton and works
#armv7 raise "Too big #{right.integer} " if (right.integer >> 16) > 0
#armv7 operand = (right.integer & 0xFFF)
#armv7 immediate = 1
#armv7 rn = (right.integer >> 12)
# a little STRANGE, that the armv7 movw (move a 2 byte word) is an old test opcode, but there it is
#armv7 @attributes[:opcode] = :tst
raise "No negatives implemented " if right.integer < 0 raise "No negatives implemented " if right.integer < 0
# and so it continues: when we notice that the const doesn't fit, first time we raise an # and so it continues: when we notice that the const doesn't fit, first time we raise an
# error,but set the extra flag, to say the instruction is now 8 bytes # error,but set the extra flag, to say the instruction is now 8 bytes