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// SPDX-License-Identifier: Apache-2.0 OR MIT
//
// Copyright (c) 2018-2019 by the author(s)
//
// Author(s):
// - Andre Richter <andre.o.richter@gmail.com>
//! Stack Pointer Select
//!
//! Allows the Stack Pointer to be selected between SP_EL0 and SP_ELx.
use register::{cpu::RegisterReadWrite, register_bitfields};
register_bitfields! {u32,
SPSel [
/// Stack pointer to use. Possible values of this bit are:
///
/// 0 Use SP_EL0 at all Exception levels.
/// 1 Use SP_ELx for Exception level ELx.
///
/// When this register has an architecturally-defined reset value, this field resets to 1.
SP OFFSET(0) NUMBITS(1) [
EL0 = 0,
ELx = 1
]
]
}
pub struct Reg;
impl RegisterReadWrite<u32, SPSel::Register> for Reg {
sys_coproc_read_raw!(u32, "SPSEL");
sys_coproc_write_raw!(u32, "SPSEL");
}
#[allow(non_upper_case_globals)]
pub static SPSel: Reg = Reg {};