• All the semicolons are missing.
• Most variables are missing their sigil (dollar sign).
• A few variables are undeclared.
• The arguments are passed via undeclared/global variables.
• uint32_t is an odd variable name, and it's not used.
• Sums of references aren't very useful. Surely a bug.

I hope you're using use strict; and use warnings;.

Update: Added points.

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