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Use link_args to alias arm builtins #39

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Use link_args to alias arm builtins #39

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dc09b6f
Use link_args to alias arm builtins
mattico Aug 16, 2016
517193f
Don't use link_args for test builds
mattico Aug 16, 2016
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49 changes: 16 additions & 33 deletions src/arm.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -36,57 +36,40 @@ extern "C" {
fn memset(dest: *mut u8, c: i32, n: usize) -> *mut u8;
}

// FIXME: The `*4` and `*8` variants should be defined as aliases.
// Create aliases for the *4 and *8 variants
#[cfg(not(test))]
#[link_args = "-Wl,--defsym=__aeabi_memcpy4=__aeabi_memcpy -Wl,--defsym=__aeabi_memcpy8=__aeabi_memcpy"]
extern {}

#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memcpy(dest: *mut u8, src: *const u8, n: usize) {
memcpy(dest, src, n);
}
#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memcpy4(dest: *mut u8, src: *const u8, n: usize) {
memcpy(dest, src, n);
}
#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memcpy8(dest: *mut u8, src: *const u8, n: usize) {
memcpy(dest, src, n);
}

#[cfg(not(test))]
#[link_args = "-Wl,--defsym=__aeabi_memmove4=__aeabi_memmove -Wl,--defsym=__aeabi_memmove8=__aeabi_memmove"]
extern {}

#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memmove(dest: *mut u8, src: *const u8, n: usize) {
memmove(dest, src, n);
}
#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memmove4(dest: *mut u8, src: *const u8, n: usize) {
memmove(dest, src, n);
}
#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memmove8(dest: *mut u8, src: *const u8, n: usize) {
memmove(dest, src, n);
}

#[cfg(not(test))]
#[link_args = "-Wl,--defsym=__aeabi_memset4=__aeabi_memset -Wl,--defsym=__aeabi_memset8=__aeabi_memset"]
extern {}

// Note the different argument order
#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memset(dest: *mut u8, n: usize, c: i32) {
memset(dest, c, n);
}
#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memset4(dest: *mut u8, n: usize, c: i32) {
memset(dest, c, n);
}
#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memset8(dest: *mut u8, n: usize, c: i32) {
memset(dest, c, n);
}

#[cfg(not(test))]
#[link_args = "-Wl,--defsym=__aeabi_memclr4=__aeabi_memclr -Wl,--defsym=__aeabi_memclr8=__aeabi_memclr"]
extern {}

#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memclr(dest: *mut u8, n: usize) {
memset(dest, 0, n);
}
#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memclr4(dest: *mut u8, n: usize) {
memset(dest, 0, n);
}
#[cfg_attr(not(test), no_mangle)]
pub unsafe extern "C" fn __aeabi_memclr8(dest: *mut u8, n: usize) {
memset(dest, 0, n);
}
1 change: 1 addition & 0 deletions src/lib.rs
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
#![feature(asm)]
#![feature(core_intrinsics)]
#![feature(linkage)]
#![feature(link_args)]
#![feature(naked_functions)]
#![cfg_attr(not(test), no_std)]
#![no_builtins]
Expand Down