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// Copyright (c) 2021 Xu Shaohua <shaohua@biofan.org>. All rights reserved.
// Use of this source is governed by Apache-2.0 License that can be found
// in the LICENSE file.

//! From `arch/x86/include/asm/signal.h`

/// Most things should be clean enough to redefine this at will, if care is taken to make libc match.
pub const _NSIG: usize = 64;

pub const _NSIG_BPW: usize = 64;

pub const _NSIG_WORDS: usize = _NSIG / _NSIG_BPW;

/// at least 32 bits
pub type old_sigset_t = usize;

#[repr(C)]
#[derive(Debug, Default, Clone, Copy)]
pub struct sigset_t {
    pub sig: [usize; _NSIG_WORDS],
}

impl From<old_sigset_t> for sigset_t {
    fn from(val: old_sigset_t) -> Self {
        let mut s = Self::default();
        s.sig[0] = val;
        s
    }
}

/// non-uapi in-kernel `SA_FLAGS` for those indicates ABI for a signal frame.
pub const SA_IA32_ABI: u32 = 0x0200_0000;
pub const SA_X32_ABI: u32 = 0x0100_0000;