ruby-x/rubyx
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

dead code removal

Browse Source
This commit is contained in:
Torsten Ruger 2016-12-16 01:31:38 +02:00
parent 6f9955a726
commit b2579a2b82
1 changed files with 13 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
lib/arm/instructions/memory_instruction.rb
View File

@ -21,20 +21,20 @@ module Arm
@is_load = opcode.to_s[0] == "l" ? 1 : 0 #L (load) flag
end
def assemble(io)
#str / ldr are _serious instructions. With BIG possibilities not half are implemented
# don't overwrite instance variables, to make assembly repeatable
#TODO better test, this operand integer (register) does not work.
def assemble(io)
rn , operand , add_offset , arg = @rn , @operand , @add_offset , @left
arg = arg.symbol if( arg.is_a? ::Register::RegisterValue )
#str / ldr are _serious instructions. With BIG possibilities not half are implemented
is_reg = arg.is_a?(::Register::RegisterValue)
if( arg.is_a?(Symbol) and not is_reg)
is_reg = (arg.to_s[0] == "r")
end
if (is_reg ) #symbol is register
raise "invalid operand argument #{arg.inspect} #{inspect}" unless (is_reg )
rn = arg
if @right
operand = @right
#TODO better test, this operand integer (register) does not work. but sleep first
operand = operand.symbol if operand.is_a? ::Register::RegisterValue
unless( operand.is_a? Symbol) #TODO test/check/understand
add_offset = (operand < 0) ? 0 : 1
@ -42,16 +42,7 @@ module Arm
raise "offset too large (max 4095) #{arg} #{inspect}" if (@operand.abs > 4095)
end
end
elsif (arg.is_a?(Parfait::Object) or arg.is_a? Symbol ) #use pc relative
rn = :pc
operand = arg.position - self.position - 8 #stringtable is after code
add_offset = 1
if (operand.abs > 4095)
raise "reference offset too large/small (4095<#{operand}) #{arg} #{inspect}"
end
else
raise "invalid operand argument #{arg.inspect} #{inspect}"
end
#not sure about these 2 constants. They produce the correct output for str r0 , r1
# but i can't help thinking that that is because they are not used in that instruction and
# so it doesn't matter. Will see