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Diffstat (limited to 'src/libunwind/libunwind.rs')
| -rw-r--r-- | src/libunwind/libunwind.rs | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/src/libunwind/libunwind.rs b/src/libunwind/libunwind.rs deleted file mode 100644 index 0c57861f70a..00000000000 --- a/src/libunwind/libunwind.rs +++ /dev/null @@ -1,279 +0,0 @@ -#![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_arch = "riscv64")] -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_SP_REG: c_int = 13; - 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! |