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asm/inline: explicitly use asm macro #372

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merged 8 commits into from
Dec 19, 2021
Merged

asm/inline: explicitly use asm macro #372

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dd72f11
asm/inline: explicitly use asm macro
jordens Dec 16, 2021
2bf12c6
fmt [nfc]
jordens Dec 16, 2021
fcc0985
asm/inline: also use asm macro in mods
jordens Dec 16, 2021
46a3320
asm: silence warning about asm being stable
jordens Dec 16, 2021
d40970c
bump asm-toolchain
jordens Dec 17, 2021
981ce3a
asm: allow stable asm
jordens Dec 17, 2021
587bf1d
bkpt: nostack
jordens Dec 17, 2021
7e1548f
Add nomem, nostack and preserves_flags options to appropriate asm calls.
adamgreig Dec 17, 2021
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10 changes: 10 additions & 0 deletions asm/inline.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
//! All of these functions should be blanket-`unsafe`. `cortex-m` provides safe wrappers where
//! applicable.

use core::arch::asm;
use core::sync::atomic::{compiler_fence, Ordering};

#[inline(always)]
Expand Down Expand Up @@ -214,6 +215,7 @@ pub unsafe fn __bootstrap(msp: u32, rv: u32) -> ! {
pub use self::v7m::*;
#[cfg(any(armv7m, armv8m_main))]
mod v7m {
use core::arch::asm;
use core::sync::atomic::{compiler_fence, Ordering};

#[inline(always)]
Expand Down Expand Up @@ -283,6 +285,8 @@ mod v7m {
pub use self::v7em::*;
#[cfg(armv7em)]
mod v7em {
use core::arch::asm;

#[inline(always)]
pub unsafe fn __basepri_max_cm7_r0p1(val: u8) {
asm!(
Expand Down Expand Up @@ -319,6 +323,8 @@ pub use self::v8m::*;
/// Baseline and Mainline.
#[cfg(armv8m)]
mod v8m {
use core::arch::asm;

#[inline(always)]
pub unsafe fn __tt(mut target: u32) -> u32 {
asm!("tt {target}, {target}", target = inout(reg) target);
Expand Down Expand Up @@ -366,6 +372,8 @@ pub use self::v8m_main::*;
/// Mainline only.
#[cfg(armv8m_main)]
mod v8m_main {
use core::arch::asm;

#[inline(always)]
pub unsafe fn __msplim_r() -> u32 {
let r;
Expand Down Expand Up @@ -396,6 +404,8 @@ pub use self::fpu::*;
/// All targets with FPU.
#[cfg(has_fpu)]
mod fpu {
use core::arch::asm;

#[inline(always)]
pub unsafe fn __fpscr_r() -> u32 {
let r;
Expand Down
2 changes: 2 additions & 0 deletions src/lib.rs
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Expand Up @@ -76,6 +76,8 @@
// - A generated #[derive(Debug)] function (in which case the attribute needs
// to be applied to the struct).
#![deny(clippy::missing_inline_in_public_items)]
// Don't warn about feature(asm) being stable on Rust >= 1.59.0
#![allow(stable_features)]

extern crate bare_metal;
extern crate volatile_register;
Expand Down