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Folkert de Vries
210 lines
6.5 KiB
Rust
210 lines
6.5 KiB
Rust
// ignore-tidy-linelength
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//
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//@ add-minicore
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//@ revisions: linux linux_no_function_sections macos thumb
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//@ revisions: win_x86_msvc win_x86_gnu win_i686_gnu win_x86_gnu_function_sections
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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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//@[linux_no_function_sections] compile-flags: --target x86_64-unknown-linux-gnu -Zfunction-sections=false
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//@[linux_no_function_sections] needs-llvm-components: x86
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//@[win_x86_gnu] compile-flags: --target x86_64-pc-windows-gnu
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//@[win_x86_gnu] needs-llvm-components: x86
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//@[win_x86_gnu_function_sections] compile-flags: --target x86_64-pc-windows-gnu -Zfunction-sections
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//@[win_x86_gnu_function_sections] needs-llvm-components: x86
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//@[win_x86_msvc] compile-flags: --target x86_64-pc-windows-msvc
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//@[win_x86_msvc] needs-llvm-components: x86
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//@[win_i686_gnu] compile-flags: --target i686-pc-windows-gnu
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//@[win_i686_gnu] needs-llvm-components: x86
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//@[macos] compile-flags: --target aarch64-apple-darwin
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//@[macos] needs-llvm-components: aarch64
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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, cfg_target_object_format)]
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#![no_core]
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extern crate minicore;
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use minicore::*;
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// linux,win_x86_gnu,win_i686_gnu: .intel_syntax
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//
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// linux: .pushsection .text.naked_empty,\22ax\22, @progbits
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// linux_no_function_sections: .text
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// macos-NOT: .pushsection
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//
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// win_x86_msvc: .section .text,\22xr\22,one_only,naked_empty
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// win_x86_gnu_function_sections: .section .text$naked_empty,\22xr\22,one_only,naked_empty
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// win_x86_gnu-NOT: .section
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// win_i686_gnu-NOT: .section
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//
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// thumb: .pushsection .text.naked_empty,\22ax\22, %progbits
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//
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// linux, macos, thumb: .balign 4
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//
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// linux,win_x86_gnu,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_x86_msvc,win_x86_gnu: .def naked_empty
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// win_i686_gnu: .def _naked_empty
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//
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .scl 2
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .type 32
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .endef
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//
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// win_x86: .pushsection .text.naked_empty,\22xr\22
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// win_i686: .pushsection .text._naked_empty,\22xr\22
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//
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// win_x86: .globl naked_empty
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// win_i686: .globl _naked_empty
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//
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// win_x86,win_i686: .balign 16
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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_x86_msvc,win_x86_gnu,win_i686_gnu: ret
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// thumb: bx lr
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//
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// linux,windows,win_x86_msvc,thumb: .popsection
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// win_x86_gnu-NOT,win_i686_gnu-NOT: .popsection
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//
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// thumb: .thumb
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//
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// linux,win_x86,win_i686: .att_syntax
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#[no_mangle]
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#[unsafe(naked)]
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pub extern "C" fn naked_empty() {
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cfg_select! {
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all(target_arch = "arm", target_feature = "thumb-mode") => {
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naked_asm!("bx lr");
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}
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_ => {
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naked_asm!("ret");
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}
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}
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}
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// linux,win_x86_gnu,win_i686_gnu,win_x86_msvc: .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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// linux_no_function_sections: .text
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// macos-NOT: .pushsection
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//
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// win_x86_msvc: .section .text,\22xr\22,one_only,naked_with_args_and_return
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// win_x86_gnu_function_sections: .section .text$naked_with_args_and_return,\22xr\22,one_only,naked_with_args_and_return
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// win_x86_gnu-NOT: .section
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// win_i686_gnu-NOT: .section
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//
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// thumb: .pushsection .text.naked_with_args_and_return,\22ax\22, %progbits
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//
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// linux, macos, thumb: .balign 4
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//
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// linux,win_x86_gnu,win_x86_msvc,win_i686_gnu,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_x86_msvc,win_x86_gnu: .def naked_with_args_and_return
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// win_i686_gnu: .def _naked_with_args_and_return
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//
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .scl 2
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .type 32
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .endef
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//
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// win_x86: .pushsection .text.naked_with_args_and_return,\22xr\22
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// win_i686: .pushsection .text._naked_with_args_and_return,\22xr\22
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//
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// win_x86: .globl naked_with_args_and_return
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// win_i686: .globl _naked_with_args_and_return
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//
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// win_x86,win_i686: .balign 16
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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_x86_msvc,win_x86_gnu,win_i686_gnu: 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_x86_msvc,win_x86_gnu,win_i686_gnu: ret
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// thumb: bx lr
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//
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// linux,windows,win_x86_msvc,thumb: .popsection
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// win_x86_gnu-NOT,win_i686_gnu-NOT: .popsection
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//
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// thumb: .thumb
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//
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// linux,win_x86,win_i686: .att_syntax
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#[no_mangle]
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#[unsafe(naked)]
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pub extern "C" fn naked_with_args_and_return(a: isize, b: isize) -> isize {
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cfg_select! {
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any(target_arch = "x86_64", target_arch = "x86") => {
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naked_asm!("lea rax, [rdi + rsi]", "ret")
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}
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target_arch = "aarch64" => {
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naked_asm!("add x0, x0, x1", "ret")
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}
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all(target_arch = "arm", target_feature = "thumb-mode") => {
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naked_asm!("adds r0, r0, r1", "bx lr")
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}
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}
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}
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// linux,linux_no_function_sections: .pushsection .text.some_different_name,\22ax\22, @progbits
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// macos: .pushsection __TEXT,different,regular,pure_instructions
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .section .text.some_different_name,\22xr\22
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// win_x86_gnu_function_sections: .section .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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#[unsafe(naked)]
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#[link_section = cfg_select!(
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target_object_format = "mach-o" => "__TEXT,different",
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_ => ".text.some_different_name"
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)]
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pub extern "C" fn test_link_section() {
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cfg_select! {
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all(target_arch = "arm", target_feature = "thumb-mode") => {
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naked_asm!("bx lr");
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}
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_ => {
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naked_asm!("ret");
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}
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}
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}
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// win_x86_msvc,win_x86_gnu: .def fastcall_cc
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// win_i686_gnu: .def @fastcall_cc@4
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//
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .scl 2
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .type 32
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// win_x86_msvc,win_x86_gnu,win_i686_gnu: .endef
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//
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// win_x86_msvc-LABEL,win_x86_gnu-LABEL: fastcall_cc:
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// win_i686_gnu-LABEL: @fastcall_cc@4:
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#[cfg(target_os = "windows")]
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#[no_mangle]
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#[unsafe(naked)]
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pub extern "fastcall" fn fastcall_cc(x: i32) -> i32 {
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naked_asm!("ret");
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}
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