Expression rules in scatter files

Decimal or hexadecimal numbers.

Arithmetic operators: +, -, /, *, ~, OR, and AND

The OR and AND operators map to the C operators | and & respectively.

Logical operators: LOR, LAND, and !

The LOR and LAND operators map to the C operators || and && respectively.

Relational operators: <, <=, >, >=, and ==

Zero is returned when the expression evaluates to false and nonzero is returned when true.

Conditional operator: Expression ? Expression1 : Expression2

This matches the C conditional operator. If Expression evaluates to nonzero then Expression1 is evaluated otherwise Expression2 is evaluated.

er1 0x8000
{
    ...
}
er2 ((ImageLimit(er1) < 0x9000) ? +0 : +0x1000)    ; er2 has a relative address
{
    ...
}
er3 ((ImageLimit(er2) < 0x10000) ? 0x0 : +0)       ; er3 has an absolute address
{
    ...
}

Functions that return numbers.