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| author | mark <markm@cs.wisc.edu> | 2020-06-11 21:31:49 -0500 |
|---|---|---|
| committer | mark <markm@cs.wisc.edu> | 2020-07-27 19:51:13 -0500 |
| commit | 2c31b45ae878b821975c4ebd94cc1e49f6073fd0 (patch) | |
| tree | 14f64e683e3f64dcbcfb8c2c7cb45ac7592e6e09 /src/rtstartup | |
| parent | 9be8ffcb0206fc1558069a7b4766090df7877659 (diff) | |
| download | rust-2c31b45ae878b821975c4ebd94cc1e49f6073fd0.tar.gz rust-2c31b45ae878b821975c4ebd94cc1e49f6073fd0.zip | |
mv std libs to library/
Diffstat (limited to 'src/rtstartup')
| -rw-r--r-- | src/rtstartup/rsbegin.rs | 95 | ||||
| -rw-r--r-- | src/rtstartup/rsend.rs | 31 |
2 files changed, 0 insertions, 126 deletions
diff --git a/src/rtstartup/rsbegin.rs b/src/rtstartup/rsbegin.rs deleted file mode 100644 index bd1946133e8..00000000000 --- a/src/rtstartup/rsbegin.rs +++ /dev/null @@ -1,95 +0,0 @@ -// rsbegin.o and rsend.o are the so called "compiler runtime startup objects". -// They contain code needed to correctly initialize the compiler runtime. -// -// When an executable or dylib image is linked, all user code and libraries are -// "sandwiched" between these two object files, so code or data from rsbegin.o -// become first in the respective sections of the image, whereas code and data -// from rsend.o become the last ones. This effect can be used to place symbols -// at the beginning or at the end of a section, as well as to insert any required -// headers or footers. -// -// Note that the actual module entry point is located in the C runtime startup -// object (usually called `crtX.o), which then invokes initialization callbacks -// of other runtime components (registered via yet another special image section). - -#![feature(no_core, lang_items, optin_builtin_traits)] -#![crate_type = "rlib"] -#![no_core] -#![allow(non_camel_case_types)] - -#[lang = "sized"] -trait Sized {} -#[lang = "sync"] -auto trait Sync {} -#[lang = "copy"] -trait Copy {} -#[lang = "freeze"] -auto trait Freeze {} - -#[lang = "drop_in_place"] -#[inline] -#[allow(unconditional_recursion)] -pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) { - drop_in_place(to_drop); -} - -#[cfg(all(target_os = "windows", target_arch = "x86", target_env = "gnu"))] -pub mod eh_frames { - #[no_mangle] - #[link_section = ".eh_frame"] - // Marks beginning of the stack frame unwind info section - pub static __EH_FRAME_BEGIN__: [u8; 0] = []; - - // Scratch space for unwinder's internal book-keeping. - // This is defined as `struct object` in $GCC/libgcc/unwind-dw2-fde.h. - static mut OBJ: [isize; 6] = [0; 6]; - - macro_rules! impl_copy { - ($($t:ty)*) => { - $( - impl ::Copy for $t {} - )* - } - } - - impl_copy! { - usize u8 u16 u32 u64 u128 - isize i8 i16 i32 i64 i128 - f32 f64 - bool char - } - - // Unwind info registration/deregistration routines. - // See the docs of libpanic_unwind. - extern "C" { - fn rust_eh_register_frames(eh_frame_begin: *const u8, object: *mut u8); - fn rust_eh_unregister_frames(eh_frame_begin: *const u8, object: *mut u8); - } - - unsafe extern "C" fn init() { - // register unwind info on module startup - rust_eh_register_frames(&__EH_FRAME_BEGIN__ as *const u8, &mut OBJ as *mut _ as *mut u8); - } - - unsafe extern "C" fn uninit() { - // unregister on shutdown - rust_eh_unregister_frames(&__EH_FRAME_BEGIN__ as *const u8, &mut OBJ as *mut _ as *mut u8); - } - - // MinGW-specific init/uninit routine registration - pub mod mingw_init { - // MinGW's startup objects (crt0.o / dllcrt0.o) will invoke global constructors in the - // .ctors and .dtors sections on startup and exit. In the case of DLLs, this is done when - // the DLL is loaded and unloaded. - // - // The linker will sort the sections, which ensures that our callbacks are located at the - // end of the list. Since constructors are run in reverse order, this ensures that our - // callbacks are the first and last ones executed. - - #[link_section = ".ctors.65535"] // .ctors.* : C initialization callbacks - pub static P_INIT: unsafe extern "C" fn() = super::init; - - #[link_section = ".dtors.65535"] // .dtors.* : C termination callbacks - pub static P_UNINIT: unsafe extern "C" fn() = super::uninit; - } -} diff --git a/src/rtstartup/rsend.rs b/src/rtstartup/rsend.rs deleted file mode 100644 index 333761cd977..00000000000 --- a/src/rtstartup/rsend.rs +++ /dev/null @@ -1,31 +0,0 @@ -// See rsbegin.rs for details. - -#![feature(no_core, lang_items, optin_builtin_traits)] -#![crate_type = "rlib"] -#![no_core] - -#[lang = "sized"] -trait Sized {} -#[lang = "sync"] -trait Sync {} -impl<T> Sync for T {} -#[lang = "copy"] -trait Copy {} -#[lang = "freeze"] -auto trait Freeze {} - -#[lang = "drop_in_place"] -#[inline] -#[allow(unconditional_recursion)] -pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) { - drop_in_place(to_drop); -} - -#[cfg(all(target_os = "windows", target_arch = "x86", target_env = "gnu"))] -pub mod eh_frames { - // Terminate the frame unwind info section with a 0 as a sentinel; - // this would be the 'length' field in a real FDE. - #[no_mangle] - #[link_section = ".eh_frame"] - pub static __EH_FRAME_END__: u32 = 0; -} |
