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 3.10 Expressions in Linker Scripts
 ==================================
 
 The syntax for expressions in the linker script language is identical to
 that of C expressions.  All expressions are evaluated as integers.  All
 expressions are evaluated in the same size, which is 32 bits if both the
 host and target are 32 bits, and is otherwise 64 bits.
 
    You can use and set symbol values in expressions.
 
    The linker defines several special purpose builtin functions for use
 in expressions.
 

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* Constants                   Constants
* Symbolic Constants          Symbolic constants
* Symbols                     Symbol Names
* Orphan Sections             Orphan Sections
* Location Counter            The Location Counter
* Operators                   Operators
* Evaluation                  Evaluation
* Expression Section          The Section of an Expression
* Builtin Functions           Builtin Functions
 

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(ld.info.gz) Implicit Linker Scripts