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Folkert de Vries
640c4b4f1e
The `MaybeUninit` type is `repr(transparent)`, so returning a `MaybeUninit<u64>` should work. The same is not true when using C or rust union types.
71 lines
1.7 KiB
Rust
71 lines
1.7 KiB
Rust
//@ add-minicore
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//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
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//@ needs-llvm-components: arm
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//@ ignore-backends: gcc
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#![feature(cmse_nonsecure_entry, no_core, lang_items)]
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#![no_core]
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extern crate minicore;
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use minicore::*;
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#[repr(C, align(16))]
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#[allow(unused)]
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pub struct AlignRelevant(u32);
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#[no_mangle]
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pub extern "cmse-nonsecure-entry" fn f1(_: u32, _: u32, _: u32, _: u32, _: u32, _: u32) {} //~ ERROR [E0798]
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#[no_mangle]
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pub extern "cmse-nonsecure-entry" fn f2(_: u32, _: u32, _: u32, _: u16, _: u16) {} //~ ERROR [E0798]
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#[no_mangle]
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pub extern "cmse-nonsecure-entry" fn f3(_: u32, _: u64, _: u32) {} //~ ERROR [E0798]
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#[no_mangle]
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pub extern "cmse-nonsecure-entry" fn f4(_: AlignRelevant, _: u32) {} //~ ERROR [E0798]
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#[no_mangle]
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#[allow(improper_ctypes_definitions)]
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pub extern "cmse-nonsecure-entry" fn f5(_: [u32; 5]) {} //~ ERROR [E0798]
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struct Four {
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a: u32,
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b: u32,
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c: u32,
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d: u32,
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}
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struct Five {
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a: u32,
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b: u32,
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c: u32,
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d: u32,
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e: u32,
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}
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#[no_mangle]
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pub extern "cmse-nonsecure-entry" fn four(_: Four) {}
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#[no_mangle]
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pub extern "cmse-nonsecure-entry" fn five(_: Five) {} //~ ERROR [E0798]
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#[repr(Rust)]
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pub union ReprRustUnionU64 {
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_unused: u64,
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}
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#[repr(C)]
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pub union ReprCUnionU64 {
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_unused: u64,
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}
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#[no_mangle]
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#[allow(improper_ctypes_definitions)]
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pub extern "cmse-nonsecure-entry" fn union_rust(_: ReprRustUnionU64) {}
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#[no_mangle]
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pub extern "cmse-nonsecure-entry" fn union_c(_: ReprCUnionU64) {}
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#[no_mangle]
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pub extern "cmse-nonsecure-entry" fn maybe_uninit_32bit(_: MaybeUninit<u32>) {}
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#[no_mangle]
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pub extern "cmse-nonsecure-entry" fn maybe_uninit_64bit(_: MaybeUninit<f64>) {}
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