| // 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> |
| |
| macro_rules! __read_raw { |
| ($width:ty, $asm_instr:tt, $asm_reg_name:tt, $asm_width:tt) => { |
| /// Reads the raw bits of the CPU register. |
| #[inline] |
| fn get(&self) -> $width { |
| match () { |
| #[cfg(target_arch = "aarch64")] |
| () => { |
| let reg; |
| unsafe { |
| core::arch::asm!(concat!($asm_instr, " {reg:", $asm_width, "}, ", $asm_reg_name), reg = out(reg) reg, options(nomem, nostack)); |
| } |
| reg |
| } |
| |
| #[cfg(not(target_arch = "aarch64"))] |
| () => unimplemented!(), |
| } |
| } |
| }; |
| } |
| |
| macro_rules! __write_raw { |
| ($width:ty, $asm_instr:tt, $asm_reg_name:tt, $asm_width:tt) => { |
| /// Writes raw bits to the CPU register. |
| #[cfg_attr(not(target_arch = "aarch64"), allow(unused_variables))] |
| #[inline] |
| fn set(&self, value: $width) { |
| match () { |
| #[cfg(target_arch = "aarch64")] |
| () => { |
| unsafe { |
| core::arch::asm!(concat!($asm_instr, " ", $asm_reg_name, ", {reg:", $asm_width, "}"), reg = in(reg) value, options(nomem, nostack)) |
| } |
| } |
| |
| #[cfg(not(target_arch = "aarch64"))] |
| () => unimplemented!(), |
| } |
| } |
| }; |
| } |
| |
| /// Raw read from system coprocessor registers. |
| macro_rules! sys_coproc_read_raw { |
| ($width:ty, $asm_reg_name:tt, $asm_width:tt) => { |
| __read_raw!($width, "mrs", $asm_reg_name, $asm_width); |
| }; |
| } |
| |
| /// Raw write to system coprocessor registers. |
| macro_rules! sys_coproc_write_raw { |
| ($width:ty, $asm_reg_name:tt, $asm_width:tt) => { |
| __write_raw!($width, "msr", $asm_reg_name, $asm_width); |
| }; |
| } |
| |
| /// Raw read from (ordinary) registers. |
| macro_rules! read_raw { |
| ($width:ty, $asm_reg_name:tt, $asm_width:tt) => { |
| __read_raw!($width, "mov", $asm_reg_name, $asm_width); |
| }; |
| } |
| /// Raw write to (ordinary) registers. |
| macro_rules! write_raw { |
| ($width:ty, $asm_reg_name:tt, $asm_width:tt) => { |
| __write_raw!($width, "mov", $asm_reg_name, $asm_width); |
| }; |
| } |