22.3.1 Pragmas to Control Function Attributes

#pragma long_calls

Set all functions following the pragma to have the long_call function attribute.

#pragma no_long_calls

Set all functions following the pragma to have the short_call attribute.

#pragma long_calls_off

Disable the effect of any preceding long_calls or long_calls_off pragma, so that following functions will not have any long_call or short_call attribute implicitly set.