70 lines
1.4 KiB
Rust
70 lines
1.4 KiB
Rust
|
#![cfg(all(target_arch = "arm",
|
||
|
|
not(any(target_env = "gnu", target_env = "musl")),
|
||
|
|
target_os = "linux",
|
||
|
|
feature = "mem"))]
|
||
|
|
#![feature(compiler_builtins_lib)]
|
||
|
|
#![no_std]
|
||
|
|
|
||
|
|
extern crate compiler_builtins;
|
||
|
|
|
||
|
|
// test runner
|
||
|
|
extern crate utest_cortex_m_qemu;
|
||
|
|
|
||
|
|
// overrides `panic!`
|
||
|
|
#[macro_use]
|
||
|
|
extern crate utest_macros;
|
||
|
|
|
||
|
|
macro_rules! panic {
|
||
|
|
($($tt:tt)*) => {
|
||
|
|
upanic!($($tt)*);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
extern "C" {
|
||
|
|
fn __aeabi_memcpy(dest: *mut u8, src: *const u8, n: usize);
|
||
|
|
fn __aeabi_memcpy4(dest: *mut u8, src: *const u8, n: usize);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct Aligned {
|
||
|
|
array: [u8; 8],
|
||
|
|
_alignment: [u32; 0],
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Aligned {
|
||
|
|
fn new(array: [u8; 8]) -> Self {
|
||
|
|
Aligned {
|
||
|
|
array: array,
|
||
|
|
_alignment: [],
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn memcpy() {
|
||
|
|
let mut dest = [0; 4];
|
||
|
|
let src = [0xde, 0xad, 0xbe, 0xef];
|
||
|
|
|
||
|
|
for n in 0..dest.len() {
|
||
|
|
dest.copy_from_slice(&[0; 4]);
|
||
|
|
|
||
|
|
unsafe { __aeabi_memcpy(dest.as_mut_ptr(), src.as_ptr(), n) }
|
||
|
|
|
||
|
|
assert_eq!(&dest[0..n], &src[0..n])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn memcpy4() {
|
||
|
|
let mut aligned = Aligned::new([0; 8]);
|
||
|
|
let dest = &mut aligned.array;
|
||
|
|
let src = [0xde, 0xad, 0xbe, 0xef, 0xba, 0xad, 0xf0, 0x0d];
|
||
|
|
|
||
|
|
for n in 0..dest.len() {
|
||
|
|
dest.copy_from_slice(&[0; 8]);
|
||
|
|
|
||
|
|
unsafe { __aeabi_memcpy4(dest.as_mut_ptr(), src.as_ptr(), n) }
|
||
|
|
|
||
|
|
assert_eq!(&dest[0..n], &src[0..n])
|
||
|
|
}
|
||
|
|
}
|