/*===---- unwind.h - Stack unwinding ----------------------------------------=== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * *===-----------------------------------------------------------------------=== */ /* See "Data Definitions for libgcc_s" in the Linux Standard Base.*/ #if __has_include_next(<unwind.h>) /* Darwin and libunwind provide an unwind.h. If that's available, use * it. libunwind wraps some of its definitions in #ifdef _GNU_SOURCE, * so define that around the include.*/ # ifndef _GNU_SOURCE # define _SHOULD_UNDEFINE_GNU_SOURCE # define _GNU_SOURCE # endif // libunwind's unwind.h reflects the current visibility. However, Mozilla // builds with -fvisibility=hidden and relies on gcc's unwind.h to reset the // visibility to default and export its contents. gcc also allows users to // override its override by #defining HIDE_EXPORTS (but note, this only obeys // the user's -fvisibility setting; it doesn't hide any exports on its own). We // imitate gcc's header here: # ifdef HIDE_EXPORTS # include_next <unwind.h> # else # pragma GCC visibility push(default) # include_next <unwind.h> # pragma GCC visibility pop # endif # ifdef _SHOULD_UNDEFINE_GNU_SOURCE # undef _GNU_SOURCE # undef _SHOULD_UNDEFINE_GNU_SOURCE # endif #else #include <stdint.h> #ifdef __cplusplus extern "C" { #endif /* It is a bit strange for a header to play with the visibility of the symbols it declares, but this matches gcc's behavior and some programs depend on it */ #pragma GCC visibility push(default) struct _Unwind_Context; typedef enum { _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 } _Unwind_Reason_Code; #ifdef __arm__ typedef enum { _UVRSC_CORE = 0, /* integer register */ _UVRSC_VFP = 1, /* vfp */ _UVRSC_WMMXD = 3, /* Intel WMMX data register */ _UVRSC_WMMXC = 4 /* Intel WMMX control register */ } _Unwind_VRS_RegClass; typedef enum { _UVRSD_UINT32 = 0, _UVRSD_VFPX = 1, _UVRSD_UINT64 = 3, _UVRSD_FLOAT = 4, _UVRSD_DOUBLE = 5 } _Unwind_VRS_DataRepresentation; typedef enum { _UVRSR_OK = 0, _UVRSR_NOT_IMPLEMENTED = 1, _UVRSR_FAILED = 2 } _Unwind_VRS_Result; _Unwind_VRS_Result _Unwind_VRS_Get(struct _Unwind_Context *context, _Unwind_VRS_RegClass regclass, uint32_t regno, _Unwind_VRS_DataRepresentation representation, void *valuep); #else uintptr_t _Unwind_GetIP(struct _Unwind_Context* context); #endif typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)(struct _Unwind_Context*, void*); _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void*); #pragma GCC visibility pop #ifdef __cplusplus } #endif #endif