src/syscall.rs


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// Copyright 2016 David Li
// This file is part of rustv.

// rustv is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// rustv is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with rustv.  If not, see <http://www.gnu.org/licenses/>.

use memory::Mmu;
use register_file::RegisterFile;
use trap;

pub trait SyscallHandler {
    // Can't take cache because syscall can't stall
    /// Implement the syscall requested by core_id.
    fn syscall(&mut self, core_id: usize,
               registers: &mut RegisterFile, mmu: &Mmu) -> Option<trap::Trap>;

    /// Determine, after each cycle, whether the processor should halt.
    fn should_halt(&self) -> bool;
}