1 // Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! Unwind library interface
13 #![allow(non_upper_case_globals)]
14 #![allow(non_camel_case_types)]
15 #![allow(non_snake_case)]
16 #![allow(dead_code)] // these are just bindings
18 #[cfg(any(not(target_arch = "arm"), target_os = "ios"))]
19 pub use self::_Unwind_Action::*;
20 #[cfg(target_arch = "arm")]
21 pub use self::_Unwind_State::*;
22 pub use self::_Unwind_Reason_Code::*;
26 #[cfg(any(not(target_arch = "arm"), target_os = "ios"))]
29 pub enum _Unwind_Action {
31 _UA_CLEANUP_PHASE = 2,
32 _UA_HANDLER_FRAME = 4,
34 _UA_END_OF_STACK = 16,
37 #[cfg(target_arch = "arm")]
39 pub enum _Unwind_State {
40 _US_VIRTUAL_UNWIND_FRAME = 0,
41 _US_UNWIND_FRAME_STARTING = 1,
42 _US_UNWIND_FRAME_RESUME = 2,
49 pub enum _Unwind_Reason_Code {
51 _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
52 _URC_FATAL_PHASE2_ERROR = 2,
53 _URC_FATAL_PHASE1_ERROR = 3,
55 _URC_END_OF_STACK = 5,
56 _URC_HANDLER_FOUND = 6,
57 _URC_INSTALL_CONTEXT = 7,
58 _URC_CONTINUE_UNWIND = 8,
59 _URC_FAILURE = 9, // used only by ARM EABI
62 pub type _Unwind_Exception_Class = u64;
64 pub type _Unwind_Word = libc::uintptr_t;
66 #[cfg(target_arch = "x86")]
67 pub const unwinder_private_data_size: uint = 5;
69 #[cfg(target_arch = "x86_64")]
70 pub const unwinder_private_data_size: uint = 6;
72 #[cfg(all(target_arch = "arm", not(target_os = "ios")))]
73 pub const unwinder_private_data_size: uint = 20;
75 #[cfg(all(target_arch = "arm", target_os = "ios"))]
76 pub const unwinder_private_data_size: uint = 5;
78 #[cfg(target_arch = "aarch64")]
79 pub const unwinder_private_data_size: uint = 2;
81 #[cfg(any(target_arch = "mips", target_arch = "mipsel"))]
82 pub const unwinder_private_data_size: uint = 2;
85 pub struct _Unwind_Exception {
86 pub exception_class: _Unwind_Exception_Class,
87 pub exception_cleanup: _Unwind_Exception_Cleanup_Fn,
88 pub private: [_Unwind_Word; unwinder_private_data_size],
91 pub enum _Unwind_Context {}
93 pub type _Unwind_Exception_Cleanup_Fn =
94 extern "C" fn(unwind_code: _Unwind_Reason_Code,
95 exception: *mut _Unwind_Exception);
97 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
98 #[link(name = "gcc_s")]
101 #[cfg(target_os = "android")]
102 #[link(name = "gcc")]
105 #[cfg(target_os = "dragonfly")]
106 #[link(name = "gcc_pic")]
110 // iOS on armv7 uses SjLj exceptions and requires to link
111 // against corresponding routine (..._SjLj_...)
112 #[cfg(not(all(target_os = "ios", target_arch = "arm")))]
113 pub fn _Unwind_RaiseException(exception: *mut _Unwind_Exception)
114 -> _Unwind_Reason_Code;
116 #[cfg(all(target_os = "ios", target_arch = "arm"))]
117 fn _Unwind_SjLj_RaiseException(e: *mut _Unwind_Exception)
118 -> _Unwind_Reason_Code;
120 pub fn _Unwind_DeleteException(exception: *mut _Unwind_Exception);
123 // ... and now we just providing access to SjLj counterspart
124 // through a standard name to hide those details from others
125 // (see also comment above regarding _Unwind_RaiseException)
126 #[cfg(all(target_os = "ios", target_arch = "arm"))]
128 pub unsafe fn _Unwind_RaiseException(exc: *mut _Unwind_Exception)
129 -> _Unwind_Reason_Code {
130 _Unwind_SjLj_RaiseException(exc)