273 lines
9.4 KiB
Rust
Executable File
273 lines
9.4 KiB
Rust
Executable File
// Copyright 2016 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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#![allow(bad_style)]
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macro_rules! cfg_if {
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( $( if #[cfg( $meta:meta )] { $($it1:item)* } else { $($it2:item)* } )* ) =>
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( $( $( #[cfg($meta)] $it1)* $( #[cfg(not($meta))] $it2)* )* )
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}
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use libc::{c_int, c_void, uintptr_t};
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#[repr(C)]
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#[derive(Copy, Clone, PartialEq)]
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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 EHABI
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}
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pub use self::_Unwind_Reason_Code::*;
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pub type _Unwind_Exception_Class = u64;
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pub type _Unwind_Word = uintptr_t;
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pub type _Unwind_Ptr = uintptr_t;
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pub type _Unwind_Trace_Fn = extern "C" fn(ctx: *mut _Unwind_Context, arg: *mut c_void)
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-> _Unwind_Reason_Code;
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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(target_arch = "mips")]
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pub const unwinder_private_data_size: usize = 2;
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#[cfg(target_arch = "mips64")]
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pub const unwinder_private_data_size: usize = 2;
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#[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
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pub const unwinder_private_data_size: usize = 2;
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#[cfg(target_arch = "s390x")]
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pub const unwinder_private_data_size: usize = 2;
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#[cfg(target_arch = "sparc64")]
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pub const unwinder_private_data_size: usize = 2;
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#[cfg(target_os = "emscripten")]
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pub const unwinder_private_data_size: usize = 20;
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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 = extern "C" fn(unwind_code: _Unwind_Reason_Code,
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exception: *mut _Unwind_Exception);
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extern "C" {
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#[unwind]
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pub fn _Unwind_Resume(exception: *mut _Unwind_Exception) -> !;
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pub fn _Unwind_DeleteException(exception: *mut _Unwind_Exception);
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pub fn _Unwind_GetLanguageSpecificData(ctx: *mut _Unwind_Context) -> *mut c_void;
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pub fn _Unwind_GetRegionStart(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
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pub fn _Unwind_GetTextRelBase(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
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pub fn _Unwind_GetDataRelBase(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
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}
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cfg_if! {
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if #[cfg(not(any(all(target_os = "android", target_arch = "arm"),
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all(target_os = "linux", target_arch = "arm"))))] {
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// Not ARM EHABI
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#[repr(C)]
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#[derive(Copy, Clone, PartialEq)]
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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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pub use self::_Unwind_Action::*;
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extern "C" {
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pub fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word;
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pub fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word);
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pub fn _Unwind_GetIP(ctx: *mut _Unwind_Context) -> _Unwind_Word;
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pub fn _Unwind_SetIP(ctx: *mut _Unwind_Context, value: _Unwind_Word);
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pub fn _Unwind_GetIPInfo(ctx: *mut _Unwind_Context, ip_before_insn: *mut c_int)
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-> _Unwind_Word;
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pub fn _Unwind_FindEnclosingFunction(pc: *mut c_void) -> *mut c_void;
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}
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} else {
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// ARM EHABI
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#[repr(C)]
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#[derive(Copy, Clone, PartialEq)]
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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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pub use self::_Unwind_State::*;
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#[repr(C)]
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enum _Unwind_VRS_Result {
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_UVRSR_OK = 0,
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_UVRSR_NOT_IMPLEMENTED = 1,
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_UVRSR_FAILED = 2,
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}
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#[repr(C)]
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enum _Unwind_VRS_RegClass {
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_UVRSC_CORE = 0,
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_UVRSC_VFP = 1,
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_UVRSC_FPA = 2,
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_UVRSC_WMMXD = 3,
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_UVRSC_WMMXC = 4,
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}
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use self::_Unwind_VRS_RegClass::*;
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#[repr(C)]
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enum _Unwind_VRS_DataRepresentation {
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_UVRSD_UINT32 = 0,
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_UVRSD_VFPX = 1,
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_UVRSD_FPAX = 2,
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_UVRSD_UINT64 = 3,
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_UVRSD_FLOAT = 4,
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_UVRSD_DOUBLE = 5,
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}
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use self::_Unwind_VRS_DataRepresentation::*;
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pub const UNWIND_POINTER_REG: c_int = 12;
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pub const UNWIND_IP_REG: c_int = 15;
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extern "C" {
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fn _Unwind_VRS_Get(ctx: *mut _Unwind_Context,
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regclass: _Unwind_VRS_RegClass,
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regno: _Unwind_Word,
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repr: _Unwind_VRS_DataRepresentation,
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data: *mut c_void)
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-> _Unwind_VRS_Result;
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fn _Unwind_VRS_Set(ctx: *mut _Unwind_Context,
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regclass: _Unwind_VRS_RegClass,
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regno: _Unwind_Word,
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repr: _Unwind_VRS_DataRepresentation,
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data: *mut c_void)
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-> _Unwind_VRS_Result;
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}
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// On Android or ARM/Linux, these are implemented as macros:
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pub unsafe fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word {
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let mut val: _Unwind_Word = 0;
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_Unwind_VRS_Get(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
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&mut val as *mut _ as *mut c_void);
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val
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}
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pub unsafe fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word) {
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let mut value = value;
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_Unwind_VRS_Set(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
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&mut value as *mut _ as *mut c_void);
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}
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pub unsafe fn _Unwind_GetIP(ctx: *mut _Unwind_Context)
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-> _Unwind_Word {
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let val = _Unwind_GetGR(ctx, UNWIND_IP_REG);
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(val & !1) as _Unwind_Word
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}
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pub unsafe fn _Unwind_SetIP(ctx: *mut _Unwind_Context,
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value: _Unwind_Word) {
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// Propagate thumb bit to instruction pointer
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let thumb_state = _Unwind_GetGR(ctx, UNWIND_IP_REG) & 1;
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let value = value | thumb_state;
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_Unwind_SetGR(ctx, UNWIND_IP_REG, value);
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}
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pub unsafe fn _Unwind_GetIPInfo(ctx: *mut _Unwind_Context,
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ip_before_insn: *mut c_int)
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-> _Unwind_Word {
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*ip_before_insn = 0;
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_Unwind_GetIP(ctx)
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}
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// This function also doesn't exist on Android or ARM/Linux, so make it a no-op
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pub unsafe fn _Unwind_FindEnclosingFunction(pc: *mut c_void) -> *mut c_void {
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pc
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}
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}
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if #[cfg(not(all(target_os = "ios", target_arch = "arm")))] {
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// Not 32-bit iOS
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extern "C" {
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#[unwind]
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pub fn _Unwind_RaiseException(exception: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
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pub fn _Unwind_Backtrace(trace: _Unwind_Trace_Fn,
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trace_argument: *mut c_void)
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-> _Unwind_Reason_Code;
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}
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} else {
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// 32-bit iOS uses SjLj and does not provide _Unwind_Backtrace()
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extern "C" {
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#[unwind]
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pub fn _Unwind_SjLj_RaiseException(e: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
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}
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#[inline]
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pub unsafe fn _Unwind_RaiseException(exc: *mut _Unwind_Exception) -> _Unwind_Reason_Code {
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_Unwind_SjLj_RaiseException(exc)
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}
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}
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} // cfg_if!
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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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target_os = "solaris",
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target_os = "haiku",
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all(target_os = "linux",
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target_env = "musl",
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not(target_arch = "x86"),
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not(target_arch = "x86_64"))),
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link(name = "gcc_s"))]
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#[cfg_attr(all(target_os = "linux",
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target_env = "musl",
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any(target_arch = "x86", target_arch = "x86_64"),
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not(test)),
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link(name = "unwind", kind = "static"))]
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#[cfg_attr(target_os = "fuchsia",
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link(name = "unwind"))]
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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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#[cfg(not(cargobuild))]
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extern "C" {} |