149 lines
4.8 KiB
Rust
149 lines
4.8 KiB
Rust
// Copyright 2014-2015 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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//! Unwind library interface
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#![allow(non_upper_case_globals)]
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#![allow(non_camel_case_types)]
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#![allow(non_snake_case)]
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#![allow(dead_code)] // these are just bindings
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#[cfg(any(not(target_arch = "arm"), target_os = "ios"))]
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pub use self::_Unwind_Action::*;
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#[cfg(target_arch = "arm")]
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pub use self::_Unwind_State::*;
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pub use self::_Unwind_Reason_Code::*;
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use libc;
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#[cfg(any(not(target_arch = "arm"), target_os = "ios"))]
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#[repr(C)]
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#[derive(Copy, Clone)]
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pub enum _Unwind_Action {
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_UA_SEARCH_PHASE = 1,
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_UA_CLEANUP_PHASE = 2,
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_UA_HANDLER_FRAME = 4,
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_UA_FORCE_UNWIND = 8,
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_UA_END_OF_STACK = 16,
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}
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#[cfg(target_arch = "arm")]
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#[repr(C)]
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#[derive(Copy, Clone)]
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pub enum _Unwind_State {
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_US_VIRTUAL_UNWIND_FRAME = 0,
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_US_UNWIND_FRAME_STARTING = 1,
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_US_UNWIND_FRAME_RESUME = 2,
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_US_ACTION_MASK = 3,
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_US_FORCE_UNWIND = 8,
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_US_END_OF_STACK = 16
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}
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#[repr(C)]
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#[derive(Copy, Clone)]
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pub enum _Unwind_Reason_Code {
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_URC_NO_REASON = 0,
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_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
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_URC_FATAL_PHASE2_ERROR = 2,
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_URC_FATAL_PHASE1_ERROR = 3,
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_URC_NORMAL_STOP = 4,
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_URC_END_OF_STACK = 5,
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_URC_HANDLER_FOUND = 6,
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_URC_INSTALL_CONTEXT = 7,
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_URC_CONTINUE_UNWIND = 8,
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_URC_FAILURE = 9, // used only by ARM EABI
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}
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pub type _Unwind_Exception_Class = u64;
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pub type _Unwind_Word = libc::uintptr_t;
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#[cfg(target_arch = "x86")]
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pub const unwinder_private_data_size: usize = 5;
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#[cfg(target_arch = "x86_64")]
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pub const unwinder_private_data_size: usize = 6;
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#[cfg(all(target_arch = "arm", not(target_os = "ios")))]
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pub const unwinder_private_data_size: usize = 20;
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#[cfg(all(target_arch = "arm", target_os = "ios"))]
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pub const unwinder_private_data_size: usize = 5;
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#[cfg(target_arch = "aarch64")]
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pub const unwinder_private_data_size: usize = 2;
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#[cfg(any(target_arch = "mips", target_arch = "mipsel"))]
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pub const unwinder_private_data_size: usize = 2;
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#[cfg(target_arch = "powerpc")]
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pub const unwinder_private_data_size: usize = 2;
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#[repr(C)]
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pub struct _Unwind_Exception {
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pub exception_class: _Unwind_Exception_Class,
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pub exception_cleanup: _Unwind_Exception_Cleanup_Fn,
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pub private: [_Unwind_Word; unwinder_private_data_size],
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}
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pub enum _Unwind_Context {}
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pub type _Unwind_Exception_Cleanup_Fn =
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extern "C" fn(unwind_code: _Unwind_Reason_Code,
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exception: *mut _Unwind_Exception);
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#[cfg_attr(any(all(target_os = "linux", not(target_env = "musl")),
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target_os = "freebsd"),
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link(name = "gcc_s"))]
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#[cfg_attr(all(target_os = "linux", target_env = "musl", not(test)),
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link(name = "unwind", kind = "static"))]
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#[cfg_attr(any(target_os = "android", target_os = "openbsd"),
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link(name = "gcc"))]
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#[cfg_attr(all(target_os = "netbsd", not(target_vendor = "rumprun")),
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link(name = "gcc"))]
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#[cfg_attr(all(target_os = "netbsd", target_vendor = "rumprun"),
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link(name = "unwind"))]
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#[cfg_attr(target_os = "dragonfly",
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link(name = "gcc_pic"))]
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#[cfg_attr(target_os = "bitrig",
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link(name = "c++abi"))]
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#[cfg_attr(all(target_os = "windows", target_env="gnu"),
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link(name = "gcc_eh"))]
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extern "C" {
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// iOS on armv7 uses SjLj exceptions and requires to link
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// against corresponding routine (..._SjLj_...)
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#[cfg(not(all(target_os = "ios", target_arch = "arm")))]
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#[unwind]
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pub fn _Unwind_RaiseException(exception: *mut _Unwind_Exception)
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-> _Unwind_Reason_Code;
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#[cfg(all(target_os = "ios", target_arch = "arm"))]
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#[unwind]
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fn _Unwind_SjLj_RaiseException(e: *mut _Unwind_Exception)
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-> _Unwind_Reason_Code;
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pub fn _Unwind_DeleteException(exception: *mut _Unwind_Exception);
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// remove cfg after new snapshot
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#[cfg(not(all(stage0, target_os="windows", target_arch="x86_64")))]
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#[unwind]
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pub fn _Unwind_Resume(exception: *mut _Unwind_Exception) -> !;
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}
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// ... and now we just providing access to SjLj counterspart
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// through a standard name to hide those details from others
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// (see also comment above regarding _Unwind_RaiseException)
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#[cfg(all(target_os = "ios", target_arch = "arm"))]
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#[inline(always)]
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pub unsafe fn _Unwind_RaiseException(exc: *mut _Unwind_Exception)
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-> _Unwind_Reason_Code {
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_Unwind_SjLj_RaiseException(exc)
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}
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