Calculate the offset value when offsetting to the negative side with the following formula.
0x100000000 + (address after adding offset) – (address before adding offset) = (offset value)
For example, to change address 0x2000 (before offset is added) to 0x1000;
0x100000000 + 0x1000 - 0x2000 = 0xFFFFF000
Therefore, the offset value will be 0xFFFFF000.
Files that can be set offset, such as S type format or binary files, do not include debug information.
An offset cannot be set to a file that includes debug information, such as an ABS file. To do so, you will need to change the section setting and mapping first.