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"))]
28 #[derive(Copy, Clone)]
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 #[derive(Copy, Clone)]
40 pub enum _Unwind_State
{
41 _US_VIRTUAL_UNWIND_FRAME
= 0,
42 _US_UNWIND_FRAME_STARTING
= 1,
43 _US_UNWIND_FRAME_RESUME
= 2,
50 #[derive(Copy, Clone)]
51 pub enum _Unwind_Reason_Code
{
53 _URC_FOREIGN_EXCEPTION_CAUGHT
= 1,
54 _URC_FATAL_PHASE2_ERROR
= 2,
55 _URC_FATAL_PHASE1_ERROR
= 3,
57 _URC_END_OF_STACK
= 5,
58 _URC_HANDLER_FOUND
= 6,
59 _URC_INSTALL_CONTEXT
= 7,
60 _URC_CONTINUE_UNWIND
= 8,
61 _URC_FAILURE
= 9, // used only by ARM EABI
64 pub type _Unwind_Exception_Class
= u64;
66 pub type _Unwind_Word
= libc
::uintptr_t
;
68 #[cfg(target_arch = "x86")]
69 pub const unwinder_private_data_size
: usize = 5;
71 #[cfg(target_arch = "x86_64")]
72 pub const unwinder_private_data_size
: usize = 6;
74 #[cfg(all(target_arch = "arm", not(target_os = "ios")))]
75 pub const unwinder_private_data_size
: usize = 20;
77 #[cfg(all(target_arch = "arm", target_os = "ios"))]
78 pub const unwinder_private_data_size
: usize = 5;
80 #[cfg(target_arch = "aarch64")]
81 pub const unwinder_private_data_size
: usize = 2;
83 #[cfg(target_arch = "mips")]
84 pub const unwinder_private_data_size
: usize = 2;
86 #[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
87 pub const unwinder_private_data_size
: usize = 2;
89 #[cfg(target_arch = "asmjs")]
90 // FIXME: Copied from arm. Need to confirm.
91 pub const unwinder_private_data_size
: usize = 20;
94 pub struct _Unwind_Exception
{
95 pub exception_class
: _Unwind_Exception_Class
,
96 pub exception_cleanup
: _Unwind_Exception_Cleanup_Fn
,
97 pub private
: [_Unwind_Word
; unwinder_private_data_size
],
100 pub enum _Unwind_Context {}
102 pub type _Unwind_Exception_Cleanup_Fn
=
103 extern "C" fn(unwind_code
: _Unwind_Reason_Code
,
104 exception
: *mut _Unwind_Exception
);
106 #[cfg_attr(any(all(target_os = "linux", not(target_env = "musl")),
107 target_os
= "freebsd",
108 target_os
= "solaris",
109 all(target_os
= "linux",
111 not(target_arch
= "x86"),
112 not(target_arch
= "x86_64"))),
113 link(name
= "gcc_s"))]
114 #[cfg_attr(all(target_os = "linux",
116 any(target_arch
= "x86", target_arch
= "x86_64"),
118 link(name
= "unwind", kind
= "static"))]
119 #[cfg_attr(any(target_os = "android", target_os = "openbsd"),
121 #[cfg_attr(all(target_os = "netbsd", not(target_vendor = "rumprun")),
123 #[cfg_attr(all(target_os = "netbsd", target_vendor = "rumprun"),
124 link(name
= "unwind"))]
125 #[cfg_attr(target_os = "dragonfly",
126 link(name
= "gcc_pic"))]
127 #[cfg_attr(target_os = "bitrig",
128 link(name
= "c++abi"))]
129 #[cfg_attr(all(target_os = "windows", target_env="gnu"),
130 link(name
= "gcc_eh"))]
132 // iOS on armv7 uses SjLj exceptions and requires to link
133 // against corresponding routine (..._SjLj_...)
134 #[cfg(not(all(target_os = "ios", target_arch = "arm")))]
136 pub fn _Unwind_RaiseException(exception
: *mut _Unwind_Exception
)
137 -> _Unwind_Reason_Code
;
139 #[cfg(all(target_os = "ios", target_arch = "arm"))]
141 fn _Unwind_SjLj_RaiseException(e
: *mut _Unwind_Exception
)
142 -> _Unwind_Reason_Code
;
144 pub fn _Unwind_DeleteException(exception
: *mut _Unwind_Exception
);
147 pub fn _Unwind_Resume(exception
: *mut _Unwind_Exception
) -> !;
150 // ... and now we just providing access to SjLj counterspart
151 // through a standard name to hide those details from others
152 // (see also comment above regarding _Unwind_RaiseException)
153 #[cfg(all(target_os = "ios", target_arch = "arm"))]
155 pub unsafe fn _Unwind_RaiseException(exc
: *mut _Unwind_Exception
)
156 -> _Unwind_Reason_Code
{
157 _Unwind_SjLj_RaiseException(exc
)