diff options
Diffstat (limited to 'src/registers/sp_el1.rs')
-rw-r--r-- | src/registers/sp_el1.rs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/registers/sp_el1.rs b/src/registers/sp_el1.rs new file mode 100644 index 0000000..640b3aa --- /dev/null +++ b/src/registers/sp_el1.rs @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: Apache-2.0 OR MIT +// +// Copyright (c) 2018-2022 by the author(s) +// +// Author(s): +// - Andre Richter <andre.o.richter@gmail.com> + +//! The stack pointer - EL1 +//! +//! Holds the stack pointer associated with EL1. When executing at EL1, the value of SPSel.SP +//! determines the current stack pointer: +//! +//! SPSel.SP | current stack pointer +//! -------------------------------- +//! 0 | SP_EL0 +//! 1 | SP_EL1 + +use tock_registers::interfaces::{Readable, Writeable}; + +pub struct Reg; + +impl Readable for Reg { + type T = u64; + type R = (); + + sys_coproc_read_raw!(u64, "SP_EL1", "x"); +} + +impl Writeable for Reg { + type T = u64; + type R = (); + + sys_coproc_write_raw!(u64, "SP_EL1", "x"); +} + +pub const SP_EL1: Reg = Reg {}; |