44 lines
1.1 KiB
Rust
44 lines
1.1 KiB
Rust
macro_rules! atomic_bits {
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// the println macro cannot be rewritten because of the asm macro
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($type:ty, $ldrex:expr, $strex:expr) => {
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trait $type {
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unsafe fn load_excl(address: usize) -> Self {
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let raw: $type;
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asm!($ldrex
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: "=r"(raw)
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: "r"(address)
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:
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: "volatile");
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raw
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}
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unsafe fn store_excl(self, address: usize) -> bool {
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let status: $type;
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println!("{}",
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status);
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status == 0
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}
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}
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};
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// the println macro should be rewritten here
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($type:ty) => {
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fn some_func(self) {
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let status: $type;
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println!("{}", status);
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}
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};
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// unrewritale macro in func
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($type:ty, $ldrex:expr) => {
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unsafe fn load_excl(address: usize) -> Self {
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let raw: $type;
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asm!($ldrex
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: "=r"(raw)
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: "r"(address)
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:
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: "volatile");
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raw
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}
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}
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}
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