mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-31 21:16:44 +00:00
39 lines
857 B
Rust
39 lines
857 B
Rust
// revisions: x64
|
|
// assembly-output: emit-asm
|
|
// [x64] compile-flags: --target x86_64-unknown-linux-gnu -Crelocation-model=pie
|
|
// [x64] needs-llvm-components: x86
|
|
|
|
|
|
#![feature(no_core, lang_items)]
|
|
#![no_core]
|
|
#![crate_type="rlib"]
|
|
|
|
#[lang = "sized"]
|
|
trait Sized {}
|
|
#[lang = "copy"]
|
|
trait Copy {}
|
|
|
|
// CHECK-LABEL: call_other_fn:
|
|
// With PIE local functions are called "directly".
|
|
// CHECK: {{(jmp|callq)}} other_fn
|
|
#[no_mangle]
|
|
pub fn call_other_fn() -> u8 {
|
|
unsafe {
|
|
other_fn()
|
|
}
|
|
}
|
|
|
|
// CHECK-LABEL: other_fn:
|
|
// External functions are still called through GOT, since we don't know if the symbol
|
|
// is defined in the binary or in the shared library.
|
|
// CHECK: callq *foreign_fn@GOTPCREL(%rip)
|
|
#[no_mangle]
|
|
#[inline(never)]
|
|
pub fn other_fn() -> u8 {
|
|
unsafe {
|
|
foreign_fn()
|
|
}
|
|
}
|
|
|
|
extern "C" {fn foreign_fn() -> u8;}
|