as: Size
7.86 '.size'
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This directive is used to set the size associated with a symbol.
COFF Version
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For COFF targets, the '.size' directive is only permitted inside
'.def'/'.endef' pairs. It is used like this:
.size EXPRESSION
ELF Version
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For ELF targets, the '.size' directive is used like this:
.size NAME , EXPRESSION
This directive sets the size associated with a symbol NAME. The size
in bytes is computed from EXPRESSION which can make use of label
arithmetic. This directive is typically used to set the size of
function symbols.