swaitsandClaude Opus 4.6
3102fc747a
Implement full SSD1306 OLED display support: - Splash screen on boot (1.5s) with project name, version, board - Dashboard showing radio state, config, counters, RSSI/SNR - RSSI history sparkline (64-sample ring buffer, 2px-wide bars) - DisplayOn/DisplayOff host commands routed via dedicated channel - Pure render functions against generic DrawTarget (no hardware coupling) - Display on/off control bypasses radio task entirely Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
946 lines
43 KiB
Rust
946 lines
43 KiB
Rust
// SPDX-License-Identifier: Apache-2.0 OR MIT
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/*
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Atomic load/store implementation on RISC-V.
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This is for RISC-V targets without A extension. (pre-1.76 rustc doesn't provide atomics
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at all on such targets. https://github.com/rust-lang/rust/pull/114499)
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Also, optionally provides RMW implementation when Zaamo extension or force-amo feature is enabled.
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See "Atomic operation overview by architecture" in atomic-maybe-uninit for a more comprehensive and
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detailed description of the atomic and synchronize instructions in this architecture:
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https://github.com/taiki-e/atomic-maybe-uninit/blob/HEAD/src/arch/README.md#risc-v
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Refs:
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- RISC-V Instruction Set Manual
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"Zaamo" Extension for Atomic Memory Operations
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https://github.com/riscv/riscv-isa-manual/blob/riscv-isa-release-56e76be-2025-08-26/src/a-st-ext.adoc#zaamo-extension-for-atomic-memory-operations
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"Zabha" Extension for Byte and Halfword Atomic Memory Operations
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https://github.com/riscv/riscv-isa-manual/blob/riscv-isa-release-56e76be-2025-08-26/src/zabha.adoc
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- RISC-V Atomics ABI Specification
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https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/draft-20250812-301374e92976e298e676e7129a6212926b2299ce/riscv-atomic.adoc
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- atomic-maybe-uninit
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https://github.com/taiki-e/atomic-maybe-uninit
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See tests/asm-test/asm/portable-atomic for generated assembly.
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*/
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// TODO: Zacas/Zalrsc extension
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#[cfg(not(portable_atomic_no_asm))]
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use core::arch::asm;
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use core::{cell::UnsafeCell, sync::atomic::Ordering};
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#[cfg(any(
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test,
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portable_atomic_force_amo,
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target_feature = "zaamo",
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portable_atomic_target_feature = "zaamo",
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))]
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items!({
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macro_rules! atomic_rmw_amo_ext {
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// Use +a also for zaamo because `option arch +zaamo` requires LLVM 19.
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// https://github.com/llvm/llvm-project/commit/8be079cdddfd628d356d9ddb5ab397ea95fb1030
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("w") => {
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"+a"
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};
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("d") => {
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"+a"
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};
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("b") => {
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"+a,+zabha"
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};
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("h") => {
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"+a,+zabha"
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};
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}
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macro_rules! atomic_rmw_amo {
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($op:ident, $dst:ident, $val:ident, $order:ident, $size:tt) => {{
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let out;
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macro_rules! op {
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($asm_order:tt) => {
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// SAFETY: The user guaranteed that the AMO instruction is available in this
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// system by setting the portable_atomic_force_amo/target_feature and
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// portable_atomic_unsafe_assume_single_core.
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// The caller of this macro must guarantee the validity of the pointer.
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asm!(
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".option push",
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// https://github.com/riscv-non-isa/riscv-asm-manual/blob/v0.0.1/src/asm-manual.adoc#arch
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// LLVM supports `.option arch` directive on LLVM 17+.
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// https://github.com/llvm/llvm-project/commit/9e8ed3403c191ab9c4903e8eeb8f732ff8a43cb4
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// Note that `.insn <value>` directive requires LLVM 19.
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// https://github.com/llvm/llvm-project/commit/2a086dce691e3cc34a2fc27f4fb255bb2cbbfac9
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concat!(".option arch, ", atomic_rmw_amo_ext!($size)),
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concat!("amo", stringify!($op), ".", $size, $asm_order, " {out}, {val}, 0({dst})"), // atomic { _x = *dst; *dst = op(_x, val); out = _x }
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".option pop",
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dst = in(reg) ptr_reg!($dst),
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val = in(reg) $val,
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out = lateout(reg) out,
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options(nostack, preserves_flags),
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)
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};
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}
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match $order {
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Ordering::Relaxed => op!(""),
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Ordering::Acquire => op!(".aq"),
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Ordering::Release => op!(".rl"),
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// AcqRel and SeqCst RMWs are equivalent.
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Ordering::AcqRel | Ordering::SeqCst => op!(".aqrl"),
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_ => unreachable!(),
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}
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out
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}};
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}
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#[cfg(not(any(target_feature = "zabha", portable_atomic_target_feature = "zabha")))]
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items!({
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#[cfg(target_arch = "riscv32")]
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macro_rules! w {
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() => {
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""
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};
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}
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#[cfg(target_arch = "riscv64")]
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macro_rules! w {
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() => {
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"w"
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};
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}
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// 32-bit val.wrapping_shl(shift) but no extra `& (u32::BITS - 1)`
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#[inline(always)]
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fn sllw(val: u32, shift: u32) -> u32 {
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// SAFETY: Calling sll{,w} is safe.
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unsafe {
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let out;
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asm!(
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concat!("sll", w!(), " {out}, {val}, {shift}"), // out = val << shift & 31
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out = lateout(reg) out,
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val = in(reg) val,
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shift = in(reg) shift,
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options(pure, nomem, nostack, preserves_flags),
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);
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out
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}
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}
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// 32-bit val.wrapping_shr(shift) but no extra `& (u32::BITS - 1)`
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macro_rules! srlw {
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($val:expr, $shift:expr) => {
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// SAFETY: Calling srl{,w} is safe.
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unsafe {
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let val: u32 = $val;
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let shift: u32 = $shift;
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let out;
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asm!(
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concat!("srl", w!(), " {out}, {val}, {shift}"), // out = val >> shift & 31
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out = lateout(reg) out,
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val = in(reg) val,
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shift = in(reg) shift,
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options(pure, nomem, nostack, preserves_flags),
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);
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out
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}
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};
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}
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trait ZeroExtend: Copy {
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/// Zero-extends `self` to `u32` if it is smaller than 32-bit.
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fn zero_extend(self) -> u32;
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}
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macro_rules! zero_extend {
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($int:ident, $uint:ident) => {
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impl ZeroExtend for $uint {
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#[inline(always)]
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fn zero_extend(self) -> u32 {
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self as u32
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}
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}
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impl ZeroExtend for $int {
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#[allow(clippy::cast_sign_loss)]
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#[inline(always)]
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fn zero_extend(self) -> u32 {
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self as $uint as u32
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}
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}
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};
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}
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zero_extend!(i8, u8);
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zero_extend!(i16, u16);
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});
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});
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macro_rules! atomic_load_store {
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($([$($generics:tt)*])? $atomic_type:ident, $value_type:ty, $size:tt) => {
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#[repr(transparent)]
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pub(crate) struct $atomic_type $(<$($generics)*>)? {
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v: UnsafeCell<$value_type>,
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}
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// Send is implicitly implemented for atomic integers, but not for atomic pointers.
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// SAFETY: any data races are prevented by atomic operations.
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unsafe impl $(<$($generics)*>)? Send for $atomic_type $(<$($generics)*>)? {}
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// SAFETY: any data races are prevented by atomic operations.
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unsafe impl $(<$($generics)*>)? Sync for $atomic_type $(<$($generics)*>)? {}
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#[cfg(any(test, not(portable_atomic_unsafe_assume_single_core)))]
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impl $(<$($generics)*>)? $atomic_type $(<$($generics)*>)? {
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#[inline]
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pub(crate) const fn new(v: $value_type) -> Self {
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Self { v: UnsafeCell::new(v) }
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}
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#[inline]
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pub(crate) fn is_lock_free() -> bool {
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Self::IS_ALWAYS_LOCK_FREE
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}
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pub(crate) const IS_ALWAYS_LOCK_FREE: bool = true;
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#[inline]
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pub(crate) const fn as_ptr(&self) -> *mut $value_type {
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self.v.get()
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}
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}
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impl $(<$($generics)*>)? $atomic_type $(<$($generics)*>)? {
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#[inline]
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#[cfg_attr(all(debug_assertions, not(portable_atomic_no_track_caller)), track_caller)]
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pub(crate) fn load(&self, order: Ordering) -> $value_type {
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crate::utils::assert_load_ordering(order);
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let src = self.v.get();
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe {
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let out;
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macro_rules! atomic_load {
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($acquire:tt, $release:tt) => {
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asm!(
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$release, // fence
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concat!("l", $size, " {out}, 0({src})"), // atomic { out = *src }
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$acquire, // fence
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src = in(reg) ptr_reg!(src),
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out = lateout(reg) out,
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options(nostack, preserves_flags),
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)
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};
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}
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match order {
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Ordering::Relaxed => atomic_load!("", ""),
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Ordering::Acquire => atomic_load!("fence r, rw", ""),
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Ordering::SeqCst => atomic_load!("fence r, rw", "fence rw, rw"),
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_ => unreachable!(),
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}
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out
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}
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}
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#[inline]
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#[cfg_attr(all(debug_assertions, not(portable_atomic_no_track_caller)), track_caller)]
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pub(crate) fn store(&self, val: $value_type, order: Ordering) {
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crate::utils::assert_store_ordering(order);
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let dst = self.v.get();
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe {
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macro_rules! atomic_store {
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($acquire:tt, $release:tt) => {
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asm!(
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$release, // fence
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concat!("s", $size, " {val}, 0({dst})"), // atomic { *dst = val }
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$acquire, // fence
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dst = in(reg) ptr_reg!(dst),
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val = in(reg) val,
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options(nostack, preserves_flags),
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)
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};
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}
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match order {
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Ordering::Relaxed => atomic_store!("", ""),
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Ordering::Release => atomic_store!("", "fence rw, w"),
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// https://github.com/llvm/llvm-project/commit/3ea8f2526541884e03d5bd4f4e46f4eb190990b6
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Ordering::SeqCst => atomic_store!("fence rw, rw", "fence rw, w"),
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_ => unreachable!(),
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}
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}
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}
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}
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};
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}
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macro_rules! atomic_base {
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(
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$([$($generics:tt)*])? $atomic_type:ident, $value_type:ty, $int_type:ty, $size:tt,
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$fetch_add:ident, $fetch_sub:ident
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) => {
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atomic_load_store!($([$($generics)*])? $atomic_type, $value_type, $size);
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#[cfg(any(
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test,
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portable_atomic_force_amo,
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target_feature = "zaamo",
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portable_atomic_target_feature = "zaamo",
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))]
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items!({
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// There is no amo{sub,nand,neg}.
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impl $(<$($generics)*>)? $atomic_type $(<$($generics)*>)? {
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#[inline]
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pub(crate) fn swap(&self, val: $value_type, order: Ordering) -> $value_type {
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let dst = self.v.get();
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe { atomic_rmw_amo!(swap, dst, val, order, $size) }
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}
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#[inline]
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pub(crate) fn $fetch_add(&self, val: $int_type, order: Ordering) -> $value_type {
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let dst = self.v.get();
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe { atomic_rmw_amo!(add, dst, val, order, $size) }
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}
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#[inline]
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pub(crate) fn $fetch_sub(&self, val: $int_type, order: Ordering) -> $value_type {
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self.$fetch_add(val.wrapping_neg(), order)
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}
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#[inline]
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pub(crate) fn fetch_and(&self, val: $int_type, order: Ordering) -> $value_type {
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let dst = self.v.get();
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe { atomic_rmw_amo!(and, dst, val, order, $size) }
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}
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#[inline]
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pub(crate) fn fetch_or(&self, val: $int_type, order: Ordering) -> $value_type {
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let dst = self.v.get();
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe { atomic_rmw_amo!(or, dst, val, order, $size) }
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}
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#[inline]
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pub(crate) fn fetch_xor(&self, val: $int_type, order: Ordering) -> $value_type {
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let dst = self.v.get();
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe { atomic_rmw_amo!(xor, dst, val, order, $size) }
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}
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}
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#[cfg(not(any(portable_atomic_unsafe_assume_single_core, feature = "critical-section")))]
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impl_default_bit_opts!($atomic_type, $int_type);
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});
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};
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}
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macro_rules! atomic_ptr {
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($size:tt) => {
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atomic_base!([T] AtomicPtr, *mut T, usize, $size, fetch_byte_add, fetch_byte_sub);
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};
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}
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macro_rules! atomic {
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($atomic_type:ident, $value_type:ty, $size:tt, $max:tt, $min:tt) => {
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atomic_base!($atomic_type, $value_type, $value_type, $size, fetch_add, fetch_sub);
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#[cfg(any(
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test,
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portable_atomic_force_amo,
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target_feature = "zaamo",
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portable_atomic_target_feature = "zaamo",
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))]
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items!({
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// There is no amo{sub,nand,neg}.
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impl $atomic_type {
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#[inline]
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pub(crate) fn fetch_not(&self, order: Ordering) -> $value_type {
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let dst = self.v.get();
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let val: crate::utils::RegSize = !0;
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe { atomic_rmw_amo!(xor, dst, val, order, $size) }
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}
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#[inline]
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pub(crate) fn fetch_max(&self, val: $value_type, order: Ordering) -> $value_type {
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let dst = self.v.get();
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe { atomic_rmw_amo!($max, dst, val, order, $size) }
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}
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#[inline]
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pub(crate) fn fetch_min(&self, val: $value_type, order: Ordering) -> $value_type {
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let dst = self.v.get();
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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unsafe { atomic_rmw_amo!($min, dst, val, order, $size) }
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}
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}
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#[cfg(not(any(
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portable_atomic_unsafe_assume_single_core,
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feature = "critical-section",
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)))]
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items!({
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impl_default_no_fetch_ops!($atomic_type, $value_type);
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impl $atomic_type {
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#[inline]
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pub(crate) fn not(&self, order: Ordering) {
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self.fetch_not(order);
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}
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}
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});
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});
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};
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}
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macro_rules! atomic_sub_word {
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($atomic_type:ident, $value_type:ty, $size:tt, $max:tt, $min:tt) => {
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cfg_sel!({
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#[cfg(any(target_feature = "zabha", portable_atomic_target_feature = "zabha"))]
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{
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atomic!($atomic_type, $value_type, $size, $max, $min);
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}
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#[cfg(else)]
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{
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atomic_load_store!($atomic_type, $value_type, $size);
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#[cfg(any(
|
|
test,
|
|
portable_atomic_force_amo,
|
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target_feature = "zaamo",
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portable_atomic_target_feature = "zaamo",
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))]
|
|
items!({
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impl $atomic_type {
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|
#[inline]
|
|
pub(crate) fn fetch_and(
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&self,
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val: $value_type,
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order: Ordering,
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) -> $value_type {
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let dst = self.v.get();
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let (dst, shift, mut mask) =
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crate::utils::create_sub_word_mask_values(dst);
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mask = !sllw(mask, shift);
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let mut val = sllw(ZeroExtend::zero_extend(val), shift);
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val |= mask;
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
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// pointer passed in is valid because we got it from a reference.
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let out: u32 = unsafe { atomic_rmw_amo!(and, dst, val, order, "w") };
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srlw!(out, shift)
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}
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#[inline]
|
|
pub(crate) fn fetch_or(
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&self,
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val: $value_type,
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order: Ordering,
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) -> $value_type {
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let dst = self.v.get();
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let (dst, shift, _mask) =
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crate::utils::create_sub_word_mask_values(dst);
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let val = sllw(ZeroExtend::zero_extend(val), shift);
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// SAFETY: any data races are prevented by atomic intrinsics and the raw
|
|
// pointer passed in is valid because we got it from a reference.
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let out: u32 = unsafe { atomic_rmw_amo!(or, dst, val, order, "w") };
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srlw!(out, shift)
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}
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#[inline]
|
|
pub(crate) fn fetch_xor(
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&self,
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val: $value_type,
|
|
order: Ordering,
|
|
) -> $value_type {
|
|
let dst = self.v.get();
|
|
let (dst, shift, _mask) =
|
|
crate::utils::create_sub_word_mask_values(dst);
|
|
let val = sllw(ZeroExtend::zero_extend(val), shift);
|
|
// SAFETY: any data races are prevented by atomic intrinsics and the raw
|
|
// pointer passed in is valid because we got it from a reference.
|
|
let out: u32 = unsafe { atomic_rmw_amo!(xor, dst, val, order, "w") };
|
|
srlw!(out, shift)
|
|
}
|
|
#[inline]
|
|
pub(crate) fn fetch_not(&self, order: Ordering) -> $value_type {
|
|
self.fetch_xor(!0, order)
|
|
}
|
|
}
|
|
#[cfg(not(any(
|
|
portable_atomic_unsafe_assume_single_core,
|
|
feature = "critical-section",
|
|
)))]
|
|
items!({
|
|
impl_default_bit_opts!($atomic_type, $value_type);
|
|
impl $atomic_type {
|
|
#[inline]
|
|
pub(crate) fn and(&self, val: $value_type, order: Ordering) {
|
|
self.fetch_and(val, order);
|
|
}
|
|
#[inline]
|
|
pub(crate) fn or(&self, val: $value_type, order: Ordering) {
|
|
self.fetch_or(val, order);
|
|
}
|
|
#[inline]
|
|
pub(crate) fn xor(&self, val: $value_type, order: Ordering) {
|
|
self.fetch_xor(val, order);
|
|
}
|
|
#[inline]
|
|
pub(crate) fn not(&self, order: Ordering) {
|
|
self.fetch_not(order);
|
|
}
|
|
}
|
|
});
|
|
});
|
|
}
|
|
});
|
|
};
|
|
}
|
|
|
|
atomic_sub_word!(AtomicI8, i8, "b", max, min);
|
|
atomic_sub_word!(AtomicU8, u8, "b", maxu, minu);
|
|
atomic_sub_word!(AtomicI16, i16, "h", max, min);
|
|
atomic_sub_word!(AtomicU16, u16, "h", maxu, minu);
|
|
atomic!(AtomicI32, i32, "w", max, min);
|
|
atomic!(AtomicU32, u32, "w", maxu, minu);
|
|
#[cfg(target_arch = "riscv64")]
|
|
atomic!(AtomicI64, i64, "d", max, min);
|
|
#[cfg(target_arch = "riscv64")]
|
|
atomic!(AtomicU64, u64, "d", maxu, minu);
|
|
#[cfg(target_pointer_width = "32")]
|
|
atomic!(AtomicIsize, isize, "w", max, min);
|
|
#[cfg(target_pointer_width = "32")]
|
|
atomic!(AtomicUsize, usize, "w", maxu, minu);
|
|
#[cfg(target_pointer_width = "32")]
|
|
atomic_ptr!("w");
|
|
#[cfg(target_pointer_width = "64")]
|
|
atomic!(AtomicIsize, isize, "d", max, min);
|
|
#[cfg(target_pointer_width = "64")]
|
|
atomic!(AtomicUsize, usize, "d", maxu, minu);
|
|
#[cfg(target_pointer_width = "64")]
|
|
atomic_ptr!("d");
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
test_atomic_ptr_load_store!();
|
|
test_atomic_int_load_store!(i8);
|
|
test_atomic_int_load_store!(u8);
|
|
test_atomic_int_load_store!(i16);
|
|
test_atomic_int_load_store!(u16);
|
|
test_atomic_int_load_store!(i32);
|
|
test_atomic_int_load_store!(u32);
|
|
#[cfg(target_arch = "riscv64")]
|
|
test_atomic_int_load_store!(i64);
|
|
#[cfg(target_arch = "riscv64")]
|
|
test_atomic_int_load_store!(u64);
|
|
test_atomic_int_load_store!(isize);
|
|
test_atomic_int_load_store!(usize);
|
|
|
|
macro_rules! test_atomic_ptr_amo {
|
|
() => {
|
|
#[allow(
|
|
clippy::alloc_instead_of_core,
|
|
clippy::std_instead_of_alloc,
|
|
clippy::std_instead_of_core,
|
|
clippy::undocumented_unsafe_blocks
|
|
)]
|
|
mod test_atomic_ptr_amo {
|
|
use super::*;
|
|
test_atomic_ptr_amo!(AtomicPtr<u8>);
|
|
}
|
|
};
|
|
($atomic_type:ty) => {
|
|
#[allow(unused_imports)]
|
|
use sptr::Strict as _;
|
|
|
|
use crate::tests::helper; // for old rustc
|
|
|
|
::quickcheck::quickcheck! {
|
|
fn quickcheck_swap(x: usize, y: usize) -> bool {
|
|
let x = sptr::invalid_mut(x);
|
|
let y = sptr::invalid_mut(y);
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.swap(y, order), x);
|
|
assert_eq!(a.swap(x, order), y);
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_byte_add(x: usize, y: usize) -> bool {
|
|
let x = sptr::invalid_mut(x);
|
|
let y = sptr::invalid_mut::<u8>(y);
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_byte_add(y.addr(), order), x);
|
|
assert_eq!(
|
|
a.load(Ordering::Relaxed).addr(), x.addr().wrapping_add(y.addr())
|
|
);
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_byte_add(x.addr(), order), y);
|
|
assert_eq!(
|
|
a.load(Ordering::Relaxed).addr(), y.addr().wrapping_add(x.addr())
|
|
);
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_byte_sub(x: usize, y: usize) -> bool {
|
|
let x = sptr::invalid_mut(x);
|
|
let y = sptr::invalid_mut::<u8>(y);
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_byte_sub(y.addr(), order), x);
|
|
assert_eq!(
|
|
a.load(Ordering::Relaxed).addr(), x.addr().wrapping_sub(y.addr())
|
|
);
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_byte_sub(x.addr(), order), y);
|
|
assert_eq!(
|
|
a.load(Ordering::Relaxed).addr(), y.addr().wrapping_sub(x.addr())
|
|
);
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_and(x: usize, y: usize) -> bool {
|
|
let x = sptr::invalid_mut(x);
|
|
let y = sptr::invalid_mut::<u8>(y);
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_and(y.addr(), order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed).addr(), x.addr() & y.addr());
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_and(x.addr(), order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed).addr(), y.addr() & x.addr());
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_or(x: usize, y: usize) -> bool {
|
|
let x = sptr::invalid_mut(x);
|
|
let y = sptr::invalid_mut::<u8>(y);
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_or(y.addr(), order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed).addr(), x.addr() | y.addr());
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_or(x.addr(), order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed).addr(), y.addr() | x.addr());
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_xor(x: usize, y: usize) -> bool {
|
|
let x = sptr::invalid_mut(x);
|
|
let y = sptr::invalid_mut::<u8>(y);
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_xor(y.addr(), order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed).addr(), x.addr() ^ y.addr());
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_xor(x.addr(), order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed).addr(), y.addr() ^ x.addr());
|
|
}
|
|
true
|
|
}
|
|
}
|
|
};
|
|
}
|
|
macro_rules! test_atomic_int_amo {
|
|
($int_type:ident) => {
|
|
paste::paste! {
|
|
#[allow(
|
|
clippy::alloc_instead_of_core,
|
|
clippy::std_instead_of_alloc,
|
|
clippy::std_instead_of_core,
|
|
clippy::undocumented_unsafe_blocks
|
|
)]
|
|
mod [<test_atomic_ $int_type _amo>] {
|
|
use super::*;
|
|
test_atomic_int_amo!([<Atomic $int_type:camel>], $int_type);
|
|
}
|
|
}
|
|
};
|
|
($atomic_type:ty, $int_type:ident) => {
|
|
use crate::tests::helper;
|
|
::quickcheck::quickcheck! {
|
|
fn quickcheck_swap(x: $int_type, y: $int_type) -> bool {
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.swap(y, order), x);
|
|
assert_eq!(a.swap(x, order), y);
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_add(x: $int_type, y: $int_type) -> bool {
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_add(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x.wrapping_add(y));
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_add(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), y.wrapping_add(x));
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_sub(x: $int_type, y: $int_type) -> bool {
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_sub(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x.wrapping_sub(y));
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_sub(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), y.wrapping_sub(x));
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_and(x: $int_type, y: $int_type) -> bool {
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_and(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x & y);
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_and(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), y & x);
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_or(x: $int_type, y: $int_type) -> bool {
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_or(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x | y);
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_or(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), y | x);
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_xor(x: $int_type, y: $int_type) -> bool {
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_xor(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x ^ y);
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_xor(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), y ^ x);
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_max(x: $int_type, y: $int_type) -> bool {
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_max(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), core::cmp::max(x, y));
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_max(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), core::cmp::max(y, x));
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_min(x: $int_type, y: $int_type) -> bool {
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_min(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), core::cmp::min(x, y));
|
|
let a = <$atomic_type>::new(y);
|
|
assert_eq!(a.fetch_min(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), core::cmp::min(y, x));
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_not(x: $int_type) -> bool {
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
let a = <$atomic_type>::new(x);
|
|
assert_eq!(a.fetch_not(order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), !x);
|
|
assert_eq!(a.fetch_not(order), !x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x);
|
|
}
|
|
true
|
|
}
|
|
}
|
|
};
|
|
}
|
|
macro_rules! test_atomic_int_amo_sub_word {
|
|
($int_type:ident) => {
|
|
paste::paste! {
|
|
#[allow(
|
|
clippy::alloc_instead_of_core,
|
|
clippy::std_instead_of_alloc,
|
|
clippy::std_instead_of_core,
|
|
clippy::undocumented_unsafe_blocks
|
|
)]
|
|
mod [<test_atomic_ $int_type _amo>] {
|
|
use super::*;
|
|
#[cfg(any(target_feature = "zabha", portable_atomic_target_feature = "zabha"))]
|
|
test_atomic_int_amo!([<Atomic $int_type:camel>], $int_type);
|
|
#[cfg(not(any(target_feature = "zabha", portable_atomic_target_feature = "zabha")))]
|
|
test_atomic_int_amo_sub_word!([<Atomic $int_type:camel>], $int_type);
|
|
}
|
|
}
|
|
};
|
|
($atomic_type:ty, $int_type:ident) => {
|
|
use crate::tests::helper::{self, *};
|
|
::quickcheck::quickcheck! {
|
|
fn quickcheck_fetch_and(x: $int_type, y: $int_type) -> bool {
|
|
let mut rng = fastrand::Rng::new();
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
for base in [0, !0] {
|
|
let mut arr = Align16([
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
]);
|
|
let a_idx = rng.usize(3..=6);
|
|
arr.0[a_idx] = <$atomic_type>::new(x);
|
|
let a = &arr.0[a_idx];
|
|
assert_eq!(a.fetch_and(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x & y);
|
|
for i in 0..a_idx {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
for i in a_idx + 1..arr.0.len() {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
arr.0[a_idx] = <$atomic_type>::new(y);
|
|
let a = &arr.0[a_idx];
|
|
assert_eq!(a.fetch_and(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), y & x);
|
|
for i in 0..a_idx {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
for i in a_idx + 1..arr.0.len() {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
}
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_or(x: $int_type, y: $int_type) -> bool {
|
|
let mut rng = fastrand::Rng::new();
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
for base in [0, !0] {
|
|
let mut arr = Align16([
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
]);
|
|
let a_idx = rng.usize(3..=6);
|
|
arr.0[a_idx] = <$atomic_type>::new(x);
|
|
let a = &arr.0[a_idx];
|
|
assert_eq!(a.fetch_or(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x | y);
|
|
for i in 0..a_idx {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
for i in a_idx + 1..arr.0.len() {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
arr.0[a_idx] = <$atomic_type>::new(y);
|
|
let a = &arr.0[a_idx];
|
|
assert_eq!(a.fetch_or(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), y | x);
|
|
for i in 0..a_idx {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
for i in a_idx + 1..arr.0.len() {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
}
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_xor(x: $int_type, y: $int_type) -> bool {
|
|
let mut rng = fastrand::Rng::new();
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
for base in [0, !0] {
|
|
let mut arr = Align16([
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
]);
|
|
let a_idx = rng.usize(3..=6);
|
|
arr.0[a_idx] = <$atomic_type>::new(x);
|
|
let a = &arr.0[a_idx];
|
|
assert_eq!(a.fetch_xor(y, order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x ^ y);
|
|
for i in 0..a_idx {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
for i in a_idx + 1..arr.0.len() {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
arr.0[a_idx] = <$atomic_type>::new(y);
|
|
let a = &arr.0[a_idx];
|
|
assert_eq!(a.fetch_xor(x, order), y);
|
|
assert_eq!(a.load(Ordering::Relaxed), y ^ x);
|
|
for i in 0..a_idx {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
for i in a_idx + 1..arr.0.len() {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
}
|
|
}
|
|
true
|
|
}
|
|
fn quickcheck_fetch_not(x: $int_type) -> bool {
|
|
let mut rng = fastrand::Rng::new();
|
|
for &order in &helper::SWAP_ORDERINGS {
|
|
for base in [0, !0] {
|
|
let mut arr = Align16([
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
<$atomic_type>::new(base),
|
|
]);
|
|
let a_idx = rng.usize(3..=6);
|
|
arr.0[a_idx] = <$atomic_type>::new(x);
|
|
let a = &arr.0[a_idx];
|
|
assert_eq!(a.fetch_not(order), x);
|
|
assert_eq!(a.load(Ordering::Relaxed), !x);
|
|
assert_eq!(a.fetch_not(order), !x);
|
|
assert_eq!(a.load(Ordering::Relaxed), x);
|
|
for i in 0..a_idx {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
for i in a_idx + 1..arr.0.len() {
|
|
assert_eq!(arr.0[i].load(Ordering::Relaxed), base, "invalid value written");
|
|
}
|
|
}
|
|
}
|
|
true
|
|
}
|
|
}
|
|
};
|
|
}
|
|
test_atomic_ptr_amo!();
|
|
test_atomic_int_amo_sub_word!(i8);
|
|
test_atomic_int_amo_sub_word!(u8);
|
|
test_atomic_int_amo_sub_word!(i16);
|
|
test_atomic_int_amo_sub_word!(u16);
|
|
test_atomic_int_amo!(i32);
|
|
test_atomic_int_amo!(u32);
|
|
#[cfg(target_arch = "riscv64")]
|
|
test_atomic_int_amo!(i64);
|
|
#[cfg(target_arch = "riscv64")]
|
|
test_atomic_int_amo!(u64);
|
|
test_atomic_int_amo!(isize);
|
|
test_atomic_int_amo!(usize);
|
|
}
|