[rustc.git] / src / libunwind / libunwind.rs

#![allow(nonstandard_style)]

use libc::{c_int, c_void, uintptr_t};

#[repr(C)]
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum _Unwind_Reason_Code {
    _URC_NO_REASON = 0,
    _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
    _URC_FATAL_PHASE2_ERROR = 2,
    _URC_FATAL_PHASE1_ERROR = 3,
    _URC_NORMAL_STOP = 4,
    _URC_END_OF_STACK = 5,
    _URC_HANDLER_FOUND = 6,
    _URC_INSTALL_CONTEXT = 7,
    _URC_CONTINUE_UNWIND = 8,
    _URC_FAILURE = 9, // used only by ARM EHABI
}
pub use _Unwind_Reason_Code::*;

pub type _Unwind_Exception_Class = u64;
pub type _Unwind_Word = uintptr_t;
pub type _Unwind_Ptr = uintptr_t;
pub type _Unwind_Trace_Fn = extern "C" fn(ctx: *mut _Unwind_Context, arg: *mut c_void)
                                          -> _Unwind_Reason_Code;
#[cfg(target_arch = "x86")]
pub const unwinder_private_data_size: usize = 5;

#[cfg(target_arch = "x86_64")]
pub const unwinder_private_data_size: usize = 6;

#[cfg(all(target_arch = "arm", not(target_os = "ios")))]
pub const unwinder_private_data_size: usize = 20;

#[cfg(all(target_arch = "arm", target_os = "ios"))]
pub const unwinder_private_data_size: usize = 5;

#[cfg(target_arch = "aarch64")]
pub const unwinder_private_data_size: usize = 2;

#[cfg(target_arch = "mips")]
pub const unwinder_private_data_size: usize = 2;

#[cfg(target_arch = "mips64")]
pub const unwinder_private_data_size: usize = 2;

#[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
pub const unwinder_private_data_size: usize = 2;

#[cfg(target_arch = "s390x")]
pub const unwinder_private_data_size: usize = 2;

#[cfg(target_arch = "sparc64")]
pub const unwinder_private_data_size: usize = 2;

#[cfg(target_os = "emscripten")]
pub const unwinder_private_data_size: usize = 20;

#[cfg(all(target_arch = "hexagon", target_os = "linux"))]
pub const unwinder_private_data_size: usize = 35;

#[repr(C)]
pub struct _Unwind_Exception {
    pub exception_class: _Unwind_Exception_Class,
    pub exception_cleanup: _Unwind_Exception_Cleanup_Fn,
    pub private: [_Unwind_Word; unwinder_private_data_size],
}

pub enum _Unwind_Context {}

pub type _Unwind_Exception_Cleanup_Fn = extern "C" fn(unwind_code: _Unwind_Reason_Code,
                                                      exception: *mut _Unwind_Exception);
#[cfg_attr(all(feature = "llvm-libunwind",
               any(target_os = "fuchsia", target_os = "linux")),
           link(name = "unwind", kind = "static"))]
extern "C" {
    #[unwind(allowed)]
    pub fn _Unwind_Resume(exception: *mut _Unwind_Exception) -> !;
    pub fn _Unwind_DeleteException(exception: *mut _Unwind_Exception);
    pub fn _Unwind_GetLanguageSpecificData(ctx: *mut _Unwind_Context) -> *mut c_void;
    pub fn _Unwind_GetRegionStart(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
    pub fn _Unwind_GetTextRelBase(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
    pub fn _Unwind_GetDataRelBase(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
}

cfg_if::cfg_if! {
if #[cfg(all(any(target_os = "ios", target_os = "netbsd", not(target_arch = "arm"))))] {
    // Not ARM EHABI
    #[repr(C)]
    #[derive(Copy, Clone, PartialEq)]
    pub enum _Unwind_Action {
        _UA_SEARCH_PHASE = 1,
        _UA_CLEANUP_PHASE = 2,
        _UA_HANDLER_FRAME = 4,
        _UA_FORCE_UNWIND = 8,
        _UA_END_OF_STACK = 16,
    }
    pub use _Unwind_Action::*;

    #[cfg_attr(all(feature = "llvm-libunwind",
                   any(target_os = "fuchsia", target_os = "linux")),
               link(name = "unwind", kind = "static"))]
    extern "C" {
        pub fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word;
        pub fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word);
        pub fn _Unwind_GetIP(ctx: *mut _Unwind_Context) -> _Unwind_Word;
        pub fn _Unwind_SetIP(ctx: *mut _Unwind_Context, value: _Unwind_Word);
        pub fn _Unwind_GetIPInfo(ctx: *mut _Unwind_Context, ip_before_insn: *mut c_int)
                                 -> _Unwind_Word;
        pub fn _Unwind_FindEnclosingFunction(pc: *mut c_void) -> *mut c_void;
    }

} else {
    // ARM EHABI
    #[repr(C)]
    #[derive(Copy, Clone, PartialEq)]
    pub enum _Unwind_State {
        _US_VIRTUAL_UNWIND_FRAME = 0,
        _US_UNWIND_FRAME_STARTING = 1,
        _US_UNWIND_FRAME_RESUME = 2,
        _US_ACTION_MASK = 3,
        _US_FORCE_UNWIND = 8,
        _US_END_OF_STACK = 16,
    }
    pub use _Unwind_State::*;

    #[repr(C)]
    enum _Unwind_VRS_Result {
        _UVRSR_OK = 0,
        _UVRSR_NOT_IMPLEMENTED = 1,
        _UVRSR_FAILED = 2,
    }
    #[repr(C)]
    enum _Unwind_VRS_RegClass {
        _UVRSC_CORE = 0,
        _UVRSC_VFP = 1,
        _UVRSC_FPA = 2,
        _UVRSC_WMMXD = 3,
        _UVRSC_WMMXC = 4,
    }
    use _Unwind_VRS_RegClass::*;
    #[repr(C)]
    enum _Unwind_VRS_DataRepresentation {
        _UVRSD_UINT32 = 0,
        _UVRSD_VFPX = 1,
        _UVRSD_FPAX = 2,
        _UVRSD_UINT64 = 3,
        _UVRSD_FLOAT = 4,
        _UVRSD_DOUBLE = 5,
    }
    use _Unwind_VRS_DataRepresentation::*;

    pub const UNWIND_POINTER_REG: c_int = 12;
    pub const UNWIND_IP_REG: c_int = 15;

    #[cfg_attr(all(feature = "llvm-libunwind",
                   any(target_os = "fuchsia", target_os = "linux")),
               link(name = "unwind", kind = "static"))]
    extern "C" {
        fn _Unwind_VRS_Get(ctx: *mut _Unwind_Context,
                           regclass: _Unwind_VRS_RegClass,
                           regno: _Unwind_Word,
                           repr: _Unwind_VRS_DataRepresentation,
                           data: *mut c_void)
                           -> _Unwind_VRS_Result;

        fn _Unwind_VRS_Set(ctx: *mut _Unwind_Context,
                           regclass: _Unwind_VRS_RegClass,
                           regno: _Unwind_Word,
                           repr: _Unwind_VRS_DataRepresentation,
                           data: *mut c_void)
                           -> _Unwind_VRS_Result;
    }

    // On Android or ARM/Linux, these are implemented as macros:

    pub unsafe fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word {
        let mut val: _Unwind_Word = 0;
        _Unwind_VRS_Get(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
                        &mut val as *mut _ as *mut c_void);
        val
    }

    pub unsafe fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word) {
        let mut value = value;
        _Unwind_VRS_Set(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
                        &mut value as *mut _ as *mut c_void);
    }

    pub unsafe fn _Unwind_GetIP(ctx: *mut _Unwind_Context)
                                -> _Unwind_Word {
        let val = _Unwind_GetGR(ctx, UNWIND_IP_REG);
        (val & !1) as _Unwind_Word
    }

    pub unsafe fn _Unwind_SetIP(ctx: *mut _Unwind_Context,
                                value: _Unwind_Word) {
        // Propagate thumb bit to instruction pointer
        let thumb_state = _Unwind_GetGR(ctx, UNWIND_IP_REG) & 1;
        let value = value | thumb_state;
        _Unwind_SetGR(ctx, UNWIND_IP_REG, value);
    }

    pub unsafe fn _Unwind_GetIPInfo(ctx: *mut _Unwind_Context,
                                    ip_before_insn: *mut c_int)
                                    -> _Unwind_Word {
        *ip_before_insn = 0;
        _Unwind_GetIP(ctx)
    }

    // This function also doesn't exist on Android or ARM/Linux, so make it a no-op
    pub unsafe fn _Unwind_FindEnclosingFunction(pc: *mut c_void) -> *mut c_void {
        pc
    }
}
} // cfg_if!

cfg_if::cfg_if! {
if #[cfg(not(all(target_os = "ios", target_arch = "arm")))] {
    // Not 32-bit iOS
    #[cfg_attr(all(feature = "llvm-libunwind",
                   any(target_os = "fuchsia", target_os = "linux")),
               link(name = "unwind", kind = "static"))]
    extern "C" {
        #[unwind(allowed)]
        pub fn _Unwind_RaiseException(exception: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
        pub fn _Unwind_Backtrace(trace: _Unwind_Trace_Fn,
                                 trace_argument: *mut c_void)
                                 -> _Unwind_Reason_Code;
    }
} else {
    // 32-bit iOS uses SjLj and does not provide _Unwind_Backtrace()
    #[cfg_attr(all(feature = "llvm-libunwind",
                   any(target_os = "fuchsia", target_os = "linux")),
               link(name = "unwind", kind = "static"))]
    extern "C" {
        #[unwind(allowed)]
        pub fn _Unwind_SjLj_RaiseException(e: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
    }

    #[inline]
    pub unsafe fn _Unwind_RaiseException(exc: *mut _Unwind_Exception) -> _Unwind_Reason_Code {
        _Unwind_SjLj_RaiseException(exc)
    }
}
} // cfg_if!

cfg_if::cfg_if! {
if #[cfg(all(windows, target_arch = "x86_64", target_env = "gnu"))] {
    // We declare these as opaque types. This is fine since you just need to
    // pass them to _GCC_specific_handler and forget about them.
    pub enum EXCEPTION_RECORD {}
    pub type LPVOID = *mut c_void;
    pub enum CONTEXT {}
    pub enum DISPATCHER_CONTEXT {}
    pub type EXCEPTION_DISPOSITION = c_int;
    type PersonalityFn = unsafe extern "C" fn(version: c_int,
                                              actions: _Unwind_Action,
                                              exception_class: _Unwind_Exception_Class,
                                              exception_object: *mut _Unwind_Exception,
                                              context: *mut _Unwind_Context)
                                              -> _Unwind_Reason_Code;

    extern "C" {
        pub fn _GCC_specific_handler(exceptionRecord: *mut EXCEPTION_RECORD,
                                establisherFrame: LPVOID,
                                contextRecord: *mut CONTEXT,
                                dispatcherContext: *mut DISPATCHER_CONTEXT,
                                personality: PersonalityFn)
                                -> EXCEPTION_DISPOSITION;
    }
}
} // cfg_if!
Commit	Line	Data
b7449926	1	#![allow(nonstandard_style)]
1a4d82fc	2
5bcae85e	3	use libc::{c_int, c_void, uintptr_t};
1a4d82fc JJ	4
1a4d82fc JJ	5	#[repr(C)]
8bb4bdeb	6	#[derive(Debug, Copy, Clone, PartialEq)]
1a4d82fc JJ	7	pub enum _Unwind_Reason_Code {
	8	_URC_NO_REASON = 0,
	9	_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
	10	_URC_FATAL_PHASE2_ERROR = 2,
	11	_URC_FATAL_PHASE1_ERROR = 3,
	12	_URC_NORMAL_STOP = 4,
	13	_URC_END_OF_STACK = 5,
	14	_URC_HANDLER_FOUND = 6,
	15	_URC_INSTALL_CONTEXT = 7,
	16	_URC_CONTINUE_UNWIND = 8,
5bcae85e	17	_URC_FAILURE = 9, // used only by ARM EHABI
1a4d82fc	18	}
9fa01778	19	pub use _Unwind_Reason_Code::*;
1a4d82fc JJ	20
1a4d82fc JJ	21	pub type _Unwind_Exception_Class = u64;
5bcae85e SL	22	pub type _Unwind_Word = uintptr_t;
	23	pub type _Unwind_Ptr = uintptr_t;
	24	pub type _Unwind_Trace_Fn = extern "C" fn(ctx: mut _Unwind_Context, arg: mut c_void)
3157f602	25	-> _Unwind_Reason_Code;
1a4d82fc	26	#[cfg(target_arch = "x86")]
c34b1796	27	pub const unwinder_private_data_size: usize = 5;
1a4d82fc JJ	28
1a4d82fc JJ	29	#[cfg(target_arch = "x86_64")]
c34b1796	30	pub const unwinder_private_data_size: usize = 6;
1a4d82fc JJ	31
1a4d82fc JJ	32	#[cfg(all(target_arch = "arm", not(target_os = "ios")))]
c34b1796	33	pub const unwinder_private_data_size: usize = 20;
1a4d82fc JJ	34
1a4d82fc JJ	35	#[cfg(all(target_arch = "arm", target_os = "ios"))]
c34b1796	36	pub const unwinder_private_data_size: usize = 5;
1a4d82fc JJ	37
1a4d82fc JJ	38	#[cfg(target_arch = "aarch64")]
c34b1796	39	pub const unwinder_private_data_size: usize = 2;
1a4d82fc	40
7453a54e	41	#[cfg(target_arch = "mips")]
c34b1796	42	pub const unwinder_private_data_size: usize = 2;
1a4d82fc	43
9e0c209e SL	44	#[cfg(target_arch = "mips64")]
	45	pub const unwinder_private_data_size: usize = 2;
	46
7453a54e	47	#[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
c34b1796	48	pub const unwinder_private_data_size: usize = 2;
85aaf69f	49
9e0c209e SL	50	#[cfg(target_arch = "s390x")]
	51	pub const unwinder_private_data_size: usize = 2;
	52
32a655c1 SL	53	#[cfg(target_arch = "sparc64")]
	54	pub const unwinder_private_data_size: usize = 2;
	55
c30ab7b3	56	#[cfg(target_os = "emscripten")]
7453a54e SL	57	pub const unwinder_private_data_size: usize = 20;
7453a54e SL	58
416331ca XL	59	#[cfg(all(target_arch = "hexagon", target_os = "linux"))]
	60	pub const unwinder_private_data_size: usize = 35;
	61
1a4d82fc JJ	62	#[repr(C)]
	63	pub struct _Unwind_Exception {
	64	pub exception_class: _Unwind_Exception_Class,
	65	pub exception_cleanup: _Unwind_Exception_Cleanup_Fn,
	66	pub private: [_Unwind_Word; unwinder_private_data_size],
	67	}
	68
	69	pub enum _Unwind_Context {}
	70
3157f602 XL	71	pub type _Unwind_Exception_Cleanup_Fn = extern "C" fn(unwind_code: _Unwind_Reason_Code,
3157f602 XL	72	exception: *mut _Unwind_Exception);
e1599b0c	73	#[cfg_attr(all(feature = "llvm-libunwind",
416331ca XL	74	any(target_os = "fuchsia", target_os = "linux")),
416331ca XL	75	link(name = "unwind", kind = "static"))]
3157f602	76	extern "C" {
83c7162d	77	#[unwind(allowed)]
5bcae85e	78	pub fn _Unwind_Resume(exception: *mut _Unwind_Exception) -> !;
1a4d82fc	79	pub fn _Unwind_DeleteException(exception: *mut _Unwind_Exception);
5bcae85e SL	80	pub fn _Unwind_GetLanguageSpecificData(ctx: mut _Unwind_Context) -> mut c_void;
	81	pub fn _Unwind_GetRegionStart(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
	82	pub fn _Unwind_GetTextRelBase(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
	83	pub fn _Unwind_GetDataRelBase(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
	84	}
92a42be0	85
dc9dc135	86	cfg_if::cfg_if! {
94b46f34	87	if #[cfg(all(any(target_os = "ios", target_os = "netbsd", not(target_arch = "arm"))))] {
5bcae85e SL	88	// Not ARM EHABI
	89	#[repr(C)]
	90	#[derive(Copy, Clone, PartialEq)]
	91	pub enum _Unwind_Action {
	92	_UA_SEARCH_PHASE = 1,
	93	_UA_CLEANUP_PHASE = 2,
	94	_UA_HANDLER_FRAME = 4,
	95	_UA_FORCE_UNWIND = 8,
	96	_UA_END_OF_STACK = 16,
	97	}
9fa01778	98	pub use _Unwind_Action::*;
a7813a04	99
e1599b0c	100	#[cfg_attr(all(feature = "llvm-libunwind",
416331ca XL	101	any(target_os = "fuchsia", target_os = "linux")),
416331ca XL	102	link(name = "unwind", kind = "static"))]
5bcae85e SL	103	extern "C" {
	104	pub fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word;
	105	pub fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word);
	106	pub fn _Unwind_GetIP(ctx: *mut _Unwind_Context) -> _Unwind_Word;
	107	pub fn _Unwind_SetIP(ctx: *mut _Unwind_Context, value: _Unwind_Word);
	108	pub fn _Unwind_GetIPInfo(ctx: mut _Unwind_Context, ip_before_insn: mut c_int)
	109	-> _Unwind_Word;
	110	pub fn _Unwind_FindEnclosingFunction(pc: mut c_void) -> mut c_void;
	111	}
1a4d82fc	112
5bcae85e SL	113	} else {
	114	// ARM EHABI
	115	#[repr(C)]
	116	#[derive(Copy, Clone, PartialEq)]
	117	pub enum _Unwind_State {
	118	_US_VIRTUAL_UNWIND_FRAME = 0,
	119	_US_UNWIND_FRAME_STARTING = 1,
	120	_US_UNWIND_FRAME_RESUME = 2,
	121	_US_ACTION_MASK = 3,
	122	_US_FORCE_UNWIND = 8,
	123	_US_END_OF_STACK = 16,
	124	}
9fa01778	125	pub use _Unwind_State::*;
a7813a04	126
a7813a04 XL	127	#[repr(C)]
	128	enum _Unwind_VRS_Result {
	129	_UVRSR_OK = 0,
	130	_UVRSR_NOT_IMPLEMENTED = 1,
	131	_UVRSR_FAILED = 2,
	132	}
	133	#[repr(C)]
	134	enum _Unwind_VRS_RegClass {
	135	_UVRSC_CORE = 0,
	136	_UVRSC_VFP = 1,
	137	_UVRSC_FPA = 2,
	138	_UVRSC_WMMXD = 3,
	139	_UVRSC_WMMXC = 4,
	140	}
9fa01778	141	use _Unwind_VRS_RegClass::*;
a7813a04 XL	142	#[repr(C)]
	143	enum _Unwind_VRS_DataRepresentation {
	144	_UVRSD_UINT32 = 0,
	145	_UVRSD_VFPX = 1,
	146	_UVRSD_FPAX = 2,
	147	_UVRSD_UINT64 = 3,
	148	_UVRSD_FLOAT = 4,
	149	_UVRSD_DOUBLE = 5,
	150	}
9fa01778	151	use _Unwind_VRS_DataRepresentation::*;
5bcae85e SL	152
	153	pub const UNWIND_POINTER_REG: c_int = 12;
	154	pub const UNWIND_IP_REG: c_int = 15;
a7813a04	155
e1599b0c	156	#[cfg_attr(all(feature = "llvm-libunwind",
416331ca XL	157	any(target_os = "fuchsia", target_os = "linux")),
416331ca XL	158	link(name = "unwind", kind = "static"))]
3157f602	159	extern "C" {
a7813a04	160	fn _Unwind_VRS_Get(ctx: *mut _Unwind_Context,
5bcae85e SL	161	regclass: _Unwind_VRS_RegClass,
5bcae85e SL	162	regno: _Unwind_Word,
a7813a04	163	repr: _Unwind_VRS_DataRepresentation,
5bcae85e SL	164	data: *mut c_void)
	165	-> _Unwind_VRS_Result;
	166
	167	fn _Unwind_VRS_Set(ctx: *mut _Unwind_Context,
	168	regclass: _Unwind_VRS_RegClass,
	169	regno: _Unwind_Word,
	170	repr: _Unwind_VRS_DataRepresentation,
	171	data: *mut c_void)
3157f602	172	-> _Unwind_VRS_Result;
a7813a04 XL	173	}
a7813a04 XL	174
5bcae85e SL	175	// On Android or ARM/Linux, these are implemented as macros:
	176
	177	pub unsafe fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word {
	178	let mut val: _Unwind_Word = 0;
	179	_Unwind_VRS_Get(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
	180	&mut val as mut _ as mut c_void);
	181	val
	182	}
	183
	184	pub unsafe fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word) {
	185	let mut value = value;
	186	_Unwind_VRS_Set(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
	187	&mut value as mut _ as mut c_void);
	188	}
	189
	190	pub unsafe fn _Unwind_GetIP(ctx: *mut _Unwind_Context)
	191	-> _Unwind_Word {
	192	let val = _Unwind_GetGR(ctx, UNWIND_IP_REG);
	193	(val & !1) as _Unwind_Word
	194	}
a7813a04	195
5bcae85e SL	196	pub unsafe fn _Unwind_SetIP(ctx: *mut _Unwind_Context,
	197	value: _Unwind_Word) {
	198	// Propagate thumb bit to instruction pointer
	199	let thumb_state = _Unwind_GetGR(ctx, UNWIND_IP_REG) & 1;
	200	let value = value \| thumb_state;
	201	_Unwind_SetGR(ctx, UNWIND_IP_REG, value);
	202	}
	203
	204	pub unsafe fn _Unwind_GetIPInfo(ctx: *mut _Unwind_Context,
	205	ip_before_insn: *mut c_int)
	206	-> _Unwind_Word {
	207	*ip_before_insn = 0;
	208	_Unwind_GetIP(ctx)
	209	}
	210
	211	// This function also doesn't exist on Android or ARM/Linux, so make it a no-op
	212	pub unsafe fn _Unwind_FindEnclosingFunction(pc: mut c_void) -> mut c_void {
	213	pc
	214	}
a7813a04	215	}
dc9dc135	216	} // cfg_if!
a7813a04	217
dc9dc135	218	cfg_if::cfg_if! {
5bcae85e SL	219	if #[cfg(not(all(target_os = "ios", target_arch = "arm")))] {
5bcae85e SL	220	// Not 32-bit iOS
e1599b0c	221	#[cfg_attr(all(feature = "llvm-libunwind",
416331ca XL	222	any(target_os = "fuchsia", target_os = "linux")),
416331ca XL	223	link(name = "unwind", kind = "static"))]
5bcae85e	224	extern "C" {
83c7162d	225	#[unwind(allowed)]
5bcae85e SL	226	pub fn _Unwind_RaiseException(exception: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
	227	pub fn _Unwind_Backtrace(trace: _Unwind_Trace_Fn,
	228	trace_argument: *mut c_void)
	229	-> _Unwind_Reason_Code;
	230	}
	231	} else {
	232	// 32-bit iOS uses SjLj and does not provide _Unwind_Backtrace()
e1599b0c	233	#[cfg_attr(all(feature = "llvm-libunwind",
416331ca XL	234	any(target_os = "fuchsia", target_os = "linux")),
416331ca XL	235	link(name = "unwind", kind = "static"))]
5bcae85e	236	extern "C" {
83c7162d	237	#[unwind(allowed)]
5bcae85e SL	238	pub fn _Unwind_SjLj_RaiseException(e: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
	239	}
	240
	241	#[inline]
	242	pub unsafe fn _Unwind_RaiseException(exc: *mut _Unwind_Exception) -> _Unwind_Reason_Code {
	243	_Unwind_SjLj_RaiseException(exc)
	244	}
a7813a04	245	}
5bcae85e	246	} // cfg_if!
e74abb32 XL	247
	248	cfg_if::cfg_if! {
	249	if #[cfg(all(windows, target_arch = "x86_64", target_env = "gnu"))] {
	250	// We declare these as opaque types. This is fine since you just need to
	251	// pass them to _GCC_specific_handler and forget about them.
	252	pub enum EXCEPTION_RECORD {}
	253	pub type LPVOID = *mut c_void;
	254	pub enum CONTEXT {}
	255	pub enum DISPATCHER_CONTEXT {}
	256	pub type EXCEPTION_DISPOSITION = c_int;
	257	type PersonalityFn = unsafe extern "C" fn(version: c_int,
	258	actions: _Unwind_Action,
	259	exception_class: _Unwind_Exception_Class,
	260	exception_object: *mut _Unwind_Exception,
	261	context: *mut _Unwind_Context)
	262	-> _Unwind_Reason_Code;
	263
	264	extern "C" {
	265	pub fn _GCC_specific_handler(exceptionRecord: *mut EXCEPTION_RECORD,
	266	establisherFrame: LPVOID,
	267	contextRecord: *mut CONTEXT,
	268	dispatcherContext: *mut DISPATCHER_CONTEXT,
	269	personality: PersonalityFn)
	270	-> EXCEPTION_DISPOSITION;
	271	}
	272	}
	273	} // cfg_if!