https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116056
Bug ID: 116056
Summary: [avr] Add support for __attribute__((signal(n)))
Product: gcc
Version: 14.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: gjl at gcc dot gnu.org
Target Milestone: ---
The current syntax of the "signal" and "interrupt" attributes imposes to have a
function with an assembler name that resembles the ISR name, like in
__attribute__((signal))
void __vector_1 (void)
{
// code
}
or
__attribute__((signal))
void func (void) __asm("__vector_1");
void func (void)
{
// code
}
Moreover, the ISR function must be externally_visible.
When the ISR should be implemented in a class or namespace, the following
syntax might be easier to handle:
__attribute__((signal (1)))
[static] void func (void)
{
// code
}
where the ISR number is supplied by the attribute, and the generated code would
be something like:
func:
.global __vector_1
__vector_1 = func
