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24baf77dba
Support 64-bit file size. Abort if file size > 16 MiB. Calculate lane expanded memory size using integer arithmetic only. Allocated memory is rounded to 4096 bytes. This can be adjusted. The lowest rounding of 4 would be "+ 3) / 4 * 4" instead of "+ 4095) / 4096 * 4096". Abort if ROM size after lane expansion is > 16 MiB. Expand lanes starting with the last byte instead of the first since the last byte must align with the last used lane of the memory range. Include ROM image name in exceptions.