diff options
Diffstat (limited to 'include/unwind.h')
| -rw-r--r-- | include/unwind.h | 59 |
1 files changed, 44 insertions, 15 deletions
diff --git a/include/unwind.h b/include/unwind.h index 94880bfebaed..ae8ae5d24edc 100644 --- a/include/unwind.h +++ b/include/unwind.h @@ -19,6 +19,11 @@ #include <stdint.h> #include <stddef.h> +#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__) && defined(_WIN32) +#include <windows.h> +#include <ntverp.h> +#endif + #if defined(__APPLE__) #define LIBUNWIND_UNAVAIL __attribute__ (( unavailable )) #else @@ -36,7 +41,7 @@ typedef enum { _URC_HANDLER_FOUND = 6, _URC_INSTALL_CONTEXT = 7, _URC_CONTINUE_UNWIND = 8, -#if _LIBUNWIND_ARM_EHABI +#if defined(_LIBUNWIND_ARM_EHABI) _URC_FAILURE = 9 #endif } _Unwind_Reason_Code; @@ -51,12 +56,13 @@ typedef enum { typedef struct _Unwind_Context _Unwind_Context; // opaque -#if _LIBUNWIND_ARM_EHABI +#if defined(_LIBUNWIND_ARM_EHABI) typedef uint32_t _Unwind_State; static const _Unwind_State _US_VIRTUAL_UNWIND_FRAME = 0; static const _Unwind_State _US_UNWIND_FRAME_STARTING = 1; static const _Unwind_State _US_UNWIND_FRAME_RESUME = 2; +static const _Unwind_State _US_ACTION_MASK = 3; /* Undocumented flag for force unwinding. */ static const _Unwind_State _US_FORCE_UNWIND = 8; @@ -99,7 +105,7 @@ struct _Unwind_Control_Block { } pr_cache; long long int :0; /* Enforce the 8-byte alignment */ -}; +} __attribute__((__aligned__(8))); typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) (_Unwind_State state, @@ -119,16 +125,23 @@ struct _Unwind_Exception { uint64_t exception_class; void (*exception_cleanup)(_Unwind_Reason_Code reason, _Unwind_Exception *exc); +#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__) + uintptr_t private_[6]; +#else uintptr_t private_1; // non-zero means forced unwind uintptr_t private_2; // holds sp that phase1 found for phase2 to use -#ifndef __LP64__ - // The gcc implementation of _Unwind_Exception used attribute mode on the - // above fields which had the side effect of causing this whole struct to - // round up to 32 bytes in size. To be more explicit, we add pad fields - // added for binary compatibility. +#endif +#if __SIZEOF_POINTER__ == 4 + // The implementation of _Unwind_Exception uses an attribute mode on the + // above fields which has the side effect of causing this whole struct to + // round up to 32 bytes in size (48 with SEH). To be more explicit, we add + // pad fields added for binary compatibility. uint32_t reserved[3]; #endif -}; + // The Itanium ABI requires that _Unwind_Exception objects are "double-word + // aligned". GCC has interpreted this to mean "use the maximum useful + // alignment for the target"; so do we. +} __attribute__((__aligned__)); typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) (int version, @@ -164,7 +177,7 @@ extern void _Unwind_Resume(_Unwind_Exception *exception_object); #endif extern void _Unwind_DeleteException(_Unwind_Exception *exception_object); -#if _LIBUNWIND_ARM_EHABI +#if defined(_LIBUNWIND_ARM_EHABI) typedef enum { _UVRSC_CORE = 0, /* integer register */ _UVRSC_VFP = 1, /* vfp */ @@ -204,7 +217,7 @@ _Unwind_VRS_Pop(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, _Unwind_VRS_DataRepresentation representation); #endif -#if !_LIBUNWIND_ARM_EHABI +#if !defined(_LIBUNWIND_ARM_EHABI) extern uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index); extern void _Unwind_SetGR(struct _Unwind_Context *context, int index, @@ -212,7 +225,7 @@ extern void _Unwind_SetGR(struct _Unwind_Context *context, int index, extern uintptr_t _Unwind_GetIP(struct _Unwind_Context *context); extern void _Unwind_SetIP(struct _Unwind_Context *, uintptr_t new_value); -#else // _LIBUNWIND_ARM_EHABI +#else // defined(_LIBUNWIND_ARM_EHABI) #if defined(_LIBUNWIND_UNWIND_LEVEL1_EXTERNAL_LINKAGE) #define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 extern @@ -251,7 +264,7 @@ void _Unwind_SetIP(struct _Unwind_Context *context, uintptr_t value) { uintptr_t thumb_bit = _Unwind_GetGR(context, 15) & ((uintptr_t)0x1); _Unwind_SetGR(context, 15, value | thumb_bit); } -#endif // _LIBUNWIND_ARM_EHABI +#endif // defined(_LIBUNWIND_ARM_EHABI) extern uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context); extern uintptr_t @@ -321,7 +334,7 @@ extern void __deregister_frame(const void *fde); // _Unwind_Find_FDE() will locate the FDE if the pc is in some function that has // an associated FDE. Note, Mac OS X 10.6 and later, introduces "compact unwind -// info" which the runtime uses in preference to dwarf unwind info. This +// info" which the runtime uses in preference to DWARF unwind info. This // function will only work if the target function has an FDE but no compact // unwind info. struct dwarf_eh_bases { @@ -334,7 +347,7 @@ extern const void *_Unwind_Find_FDE(const void *pc, struct dwarf_eh_bases *); // This function attempts to find the start (address of first instruction) of // a function given an address inside the function. It only works if the -// function has an FDE (dwarf unwind info). +// function has an FDE (DWARF unwind info). // This function is unimplemented on Mac OS X 10.6 and later. Instead, use // _Unwind_Find_FDE() and look at the dwarf_eh_bases.func result. extern void *_Unwind_FindEnclosingFunction(void *pc); @@ -365,6 +378,22 @@ extern void *__deregister_frame_info(const void *fde) extern void *__deregister_frame_info_bases(const void *fde) LIBUNWIND_UNAVAIL; +#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__) +#ifndef _WIN32 +typedef struct _EXCEPTION_RECORD EXCEPTION_RECORD; +typedef struct _CONTEXT CONTEXT; +typedef struct _DISPATCHER_CONTEXT DISPATCHER_CONTEXT; +#elif !defined(__MINGW32__) && VER_PRODUCTBUILD < 8000 +typedef struct _DISPATCHER_CONTEXT DISPATCHER_CONTEXT; +#endif +// This is the common wrapper for GCC-style personality functions with SEH. +extern EXCEPTION_DISPOSITION _GCC_specific_handler(EXCEPTION_RECORD *exc, + void *frame, + CONTEXT *ctx, + DISPATCHER_CONTEXT *disp, + __personality_routine pers); +#endif + #ifdef __cplusplus } #endif |