62 lines
2.3 KiB
Rust
62 lines
2.3 KiB
Rust
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(no_std)]
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#![feature(linkage)]
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#![crate_type="rlib"]
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#![no_std]
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#![allow(non_camel_case_types)]
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#[cfg(all(target_os="windows", target_arch = "x86", target_env="gnu"))]
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pub mod eh_frames
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{
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#[no_mangle]
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#[link_section = ".eh_frame"]
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pub static __EH_FRAME_BEGIN__: [u8; 0] = [];
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// Scratch space for unwinder's internal book-keeping.
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// This is defined as `struct object` in $GCC/libgcc/unwind-dw2-fde.h.
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static mut obj: [isize; 6] = [0; 6];
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extern {
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fn rust_eh_register_frames(eh_frame_begin: *const u8, object: *mut u8);
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fn rust_eh_unregister_frames(eh_frame_begin: *const u8, object: *mut u8);
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}
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unsafe fn init() {
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rust_eh_register_frames(&__EH_FRAME_BEGIN__ as *const u8,
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&mut obj as *mut _ as *mut u8);
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}
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unsafe fn uninit() {
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rust_eh_unregister_frames(&__EH_FRAME_BEGIN__ as *const u8,
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&mut obj as *mut _ as *mut u8);
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}
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pub mod ms_init
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{
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// .CRT$X?? sections are roughly analogous to ELF's .init_array and .fini_array,
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// except that they exploit the fact that linker will sort them alphabitically,
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// so e.g. sections with names between .CRT$XIA and .CRT$XIZ are guaranteed to be
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// placed between those two, without requiring any ordering of objects on the linker
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// command line.
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// Note that ordering of same-named sections from different objects is not guaranteed.
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// Since .CRT$XIA contains init array's header symbol, which must always come first,
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// we place our initialization callback into .CRT$XIB.
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#[link_section = ".CRT$XIB"] // .CRT$XI? : C initialization callbacks
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pub static P_INIT: unsafe fn() = super::init;
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#[link_section = ".CRT$XTY"] // .CRT$XT? : C termination callbacks
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pub static P_UNINIT: unsafe fn() = super::uninit;
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}
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}
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