const SA: type = if (is_mips) struct {
    pub const NOCLDSTOP = 1;
    pub const NOCLDWAIT = 0x10000;
    pub const SIGINFO = 8;
    pub const RESTART = 0x10000000;
    pub const RESETHAND = 0x80000000;
    pub const ONSTACK = 0x08000000;
    pub const NODEFER = 0x40000000;
    pub const RESTORER = 0x04000000;
} else if (is_sparc) struct {
    pub const NOCLDSTOP = 0x8;
    pub const NOCLDWAIT = 0x100;
    pub const SIGINFO = 0x200;
    pub const RESTART = 0x2;
    pub const RESETHAND = 0x4;
    pub const ONSTACK = 0x1;
    pub const NODEFER = 0x20;
    pub const RESTORER = 0x04000000;
} else struct {
    pub const NOCLDSTOP = 1;
    pub const NOCLDWAIT = 2;
    pub const SIGINFO = 4;
    pub const RESTART = 0x10000000;
    pub const RESETHAND = 0x80000000;
    pub const ONSTACK = 0x08000000;
    pub const NODEFER = 0x40000000;
    pub const RESTORER = 0x04000000;
};