These function attributes are supported by the RISC-V back end:
naked
asm
statements can safely be included in naked functions
(see Basic Asm). While using extended asm
or a mixture of
basic asm
and C code may appear to work, they cannot be
depended upon to work reliably and are not supported.
interrupt
You can specify the kind of interrupt to be handled by adding an optional parameter to the interrupt attribute like this:
void f (void) __attribute__ ((interrupt ("user")));
Permissible values for this parameter are user
, supervisor
,
and machine
. If there is no parameter, then it defaults to
machine
.