mirror of https://github.com/rust-lang/rust.git
148 lines
3.7 KiB
Rust
148 lines
3.7 KiB
Rust
//@ revisions: linux win macos thumb
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//
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//@[linux] compile-flags: --target x86_64-unknown-linux-gnu
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//@[linux] needs-llvm-components: x86
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//@[win] compile-flags: --target x86_64-pc-windows-gnu
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//@[win] needs-llvm-components: x86
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//@[macos] compile-flags: --target aarch64-apple-darwin
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//@[macos] needs-llvm-components: arm
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//@[thumb] compile-flags: --target thumbv7em-none-eabi
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//@[thumb] needs-llvm-components: arm
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#![crate_type = "lib"]
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#![feature(no_core, lang_items, rustc_attrs, naked_functions)]
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#![no_core]
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#[rustc_builtin_macro]
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macro_rules! naked_asm {
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() => {};
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}
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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// linux,win: .intel_syntax
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//
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// linux: .pushsection .text.naked_empty,\22ax\22, @progbits
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// macos: .pushsection __TEXT,__text,regular,pure_instructions
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// win: .pushsection .text.naked_empty,\22xr\22
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// thumb: .pushsection .text.naked_empty,\22ax\22, %progbits
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//
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// CHECK: .balign 4
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//
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// linux,win,thumb: .globl naked_empty
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// macos: .globl _naked_empty
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//
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// CHECK-NOT: .private_extern
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// CHECK-NOT: .hidden
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//
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// linux: .type naked_empty, @function
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//
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// win: .def naked_empty
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// win: .scl 2
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// win: .type 32
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// win: .endef naked_empty
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//
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// thumb: .type naked_empty, %function
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// thumb: .thumb
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// thumb: .thumb_func
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//
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// CHECK-LABEL: naked_empty:
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//
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// linux,macos,win: ret
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// thumb: bx lr
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//
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// CHECK: .popsection
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//
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// thumb: .thumb
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//
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// linux,win: .att_syntax
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#[no_mangle]
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#[naked]
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pub unsafe extern "C" fn naked_empty() {
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#[cfg(not(all(target_arch = "arm", target_feature = "thumb-mode")))]
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naked_asm!("ret");
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#[cfg(all(target_arch = "arm", target_feature = "thumb-mode"))]
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naked_asm!("bx lr");
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}
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// linux,win: .intel_syntax
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//
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// linux: .pushsection .text.naked_with_args_and_return,\22ax\22, @progbits
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// macos: .pushsection __TEXT,__text,regular,pure_instructions
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// win: .pushsection .text.naked_with_args_and_return,\22xr\22
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// thumb: .pushsection .text.naked_with_args_and_return,\22ax\22, %progbits
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//
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// CHECK: .balign 4
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//
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// linux,win,thumb: .globl naked_with_args_and_return
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// macos: .globl _naked_with_args_and_return
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//
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// CHECK-NOT: .private_extern
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// CHECK-NOT: .hidden
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//
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// linux: .type naked_with_args_and_return, @function
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//
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// win: .def naked_with_args_and_return
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// win: .scl 2
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// win: .type 32
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// win: .endef naked_with_args_and_return
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//
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// thumb: .type naked_with_args_and_return, %function
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// thumb: .thumb
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// thumb: .thumb_func
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//
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// CHECK-LABEL: naked_with_args_and_return:
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//
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// linux, win: lea rax, [rdi + rsi]
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// macos: add x0, x0, x1
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// thumb: adds r0, r0, r1
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//
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// linux,macos,win: ret
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// thumb: bx lr
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//
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// CHECK: .popsection
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//
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// thumb: .thumb
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//
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// linux,win: .att_syntax
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#[no_mangle]
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#[naked]
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pub unsafe extern "C" fn naked_with_args_and_return(a: isize, b: isize) -> isize {
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#[cfg(any(target_os = "windows", target_os = "linux"))]
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{
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naked_asm!("lea rax, [rdi + rsi]", "ret")
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}
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#[cfg(target_os = "macos")]
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{
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naked_asm!("add x0, x0, x1", "ret")
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}
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#[cfg(all(target_arch = "arm", target_feature = "thumb-mode"))]
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{
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naked_asm!("adds r0, r0, r1", "bx lr")
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}
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}
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// linux: .pushsection .text.some_different_name,\22ax\22, @progbits
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// macos: .pushsection .text.some_different_name,regular,pure_instructions
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// win: .pushsection .text.some_different_name,\22xr\22
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// thumb: .pushsection .text.some_different_name,\22ax\22, %progbits
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// CHECK-LABEL: test_link_section:
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#[no_mangle]
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#[naked]
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#[link_section = ".text.some_different_name"]
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pub unsafe extern "C" fn test_link_section() {
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#[cfg(not(all(target_arch = "arm", target_feature = "thumb-mode")))]
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naked_asm!("ret");
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#[cfg(all(target_arch = "arm", target_feature = "thumb-mode"))]
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naked_asm!("bx lr");
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}
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