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Using the GNU Compiler Collection (GCC)

5.46.1 ARM Pragmas

The ARM target defines pragmas for controlling the default addition of long_call and short_call attributes to functions. See section 5.25 Declaring Attributes of Functions, for information about the effects of these attributes.

long_calls

Set all subsequent functions to have the long_call attribute.

no_long_calls

Set all subsequent functions to have the short_call attribute.

long_calls_off

Do not affect the long_call or short_call attributes of subsequent functions.