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fix interpreter to simulate 32 bit machine

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This commit is contained in:
Torsten Ruger 2015-11-13 20:31:35 +02:00
parent 5c862111b9
commit f779b5d15f
1 changed files with 4 additions and 4 deletions
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8
lib/interpreter/interpreter.rb
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@ -196,9 +196,9 @@ module Interpreter
when "-"
result = left - right
when ">>"
result = left >> right
result = left / (2**right)
when "<<"
result = left << right
result = left * (2**right)
when "*"
result = left * right
when "&"
@ -210,9 +210,9 @@ module Interpreter
else
raise "unimplemented '#{@instruction.operator}' #{@instruction}"
end
if( result.is_a? Bignum)
if( result > 2**32 )
@flags[:overflow] = true
result = result % 2**62
result = result % 2**32
else
result = result.to_i
end