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[Unwind] Split unwind.h
Moving Itanium and ArmEHABI specific implementations to dedicated files. This is a NFC patch. Reviewed By: MaskRay Differential Revision: https://reviews.llvm.org/D106461
This commit is contained in:
Daniel Kiss
parent
1e733a8c04
commit
9ed1c7e496
@ -56,211 +56,15 @@ typedef enum {
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typedef struct _Unwind_Context _Unwind_Context; // opaque
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#if defined(_LIBUNWIND_ARM_EHABI)
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typedef uint32_t _Unwind_State;
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static const _Unwind_State _US_VIRTUAL_UNWIND_FRAME = 0;
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static const _Unwind_State _US_UNWIND_FRAME_STARTING = 1;
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static const _Unwind_State _US_UNWIND_FRAME_RESUME = 2;
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static const _Unwind_State _US_ACTION_MASK = 3;
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/* Undocumented flag for force unwinding. */
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static const _Unwind_State _US_FORCE_UNWIND = 8;
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typedef uint32_t _Unwind_EHT_Header;
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struct _Unwind_Control_Block;
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typedef struct _Unwind_Control_Block _Unwind_Control_Block;
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typedef struct _Unwind_Control_Block _Unwind_Exception; /* Alias */
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struct _Unwind_Control_Block {
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uint64_t exception_class;
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void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block*);
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/* Unwinder cache, private fields for the unwinder's use */
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struct {
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uint32_t reserved1; /* init reserved1 to 0, then don't touch */
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uint32_t reserved2;
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uint32_t reserved3;
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uint32_t reserved4;
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uint32_t reserved5;
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} unwinder_cache;
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/* Propagation barrier cache (valid after phase 1): */
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struct {
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uint32_t sp;
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uint32_t bitpattern[5];
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} barrier_cache;
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/* Cleanup cache (preserved over cleanup): */
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struct {
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uint32_t bitpattern[4];
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} cleanup_cache;
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/* Pr cache (for pr's benefit): */
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struct {
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uint32_t fnstart; /* function start address */
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_Unwind_EHT_Header* ehtp; /* pointer to EHT entry header word */
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uint32_t additional;
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uint32_t reserved1;
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} pr_cache;
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long long int :0; /* Enforce the 8-byte alignment */
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} __attribute__((__aligned__(8)));
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typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
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(_Unwind_State state,
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_Unwind_Exception* exceptionObject,
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struct _Unwind_Context* context);
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typedef _Unwind_Reason_Code (*_Unwind_Personality_Fn)(
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_Unwind_State state, _Unwind_Exception *exceptionObject,
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struct _Unwind_Context *context);
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#include "unwind_arm_ehabi.h"
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#else
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struct _Unwind_Context; // opaque
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struct _Unwind_Exception; // forward declaration
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typedef struct _Unwind_Exception _Unwind_Exception;
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struct _Unwind_Exception {
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uint64_t exception_class;
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void (*exception_cleanup)(_Unwind_Reason_Code reason,
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_Unwind_Exception *exc);
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#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__)
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uintptr_t private_[6];
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#else
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uintptr_t private_1; // non-zero means forced unwind
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uintptr_t private_2; // holds sp that phase1 found for phase2 to use
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#endif
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#if __SIZEOF_POINTER__ == 4
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// The implementation of _Unwind_Exception uses an attribute mode on the
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// above fields which has the side effect of causing this whole struct to
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// round up to 32 bytes in size (48 with SEH). To be more explicit, we add
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// pad fields added for binary compatibility.
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uint32_t reserved[3];
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#endif
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// The Itanium ABI requires that _Unwind_Exception objects are "double-word
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// aligned". GCC has interpreted this to mean "use the maximum useful
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// alignment for the target"; so do we.
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} __attribute__((__aligned__));
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typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
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(int version,
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_Unwind_Action actions,
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uint64_t exceptionClass,
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_Unwind_Exception* exceptionObject,
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struct _Unwind_Context* context,
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void* stop_parameter );
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typedef _Unwind_Reason_Code (*_Unwind_Personality_Fn)(
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int version, _Unwind_Action actions, uint64_t exceptionClass,
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_Unwind_Exception *exceptionObject, struct _Unwind_Context *context);
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#include "unwind_itanium.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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//
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// The following are the base functions documented by the C++ ABI
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//
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#ifdef __USING_SJLJ_EXCEPTIONS__
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extern _Unwind_Reason_Code
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_Unwind_SjLj_RaiseException(_Unwind_Exception *exception_object);
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extern void _Unwind_SjLj_Resume(_Unwind_Exception *exception_object);
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#else
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extern _Unwind_Reason_Code
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_Unwind_RaiseException(_Unwind_Exception *exception_object);
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extern void _Unwind_Resume(_Unwind_Exception *exception_object);
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#endif
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extern void _Unwind_DeleteException(_Unwind_Exception *exception_object);
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#if defined(_LIBUNWIND_ARM_EHABI)
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typedef enum {
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_UVRSC_CORE = 0, /* integer register */
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_UVRSC_VFP = 1, /* vfp */
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_UVRSC_WMMXD = 3, /* Intel WMMX data register */
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_UVRSC_WMMXC = 4 /* Intel WMMX control register */
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} _Unwind_VRS_RegClass;
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typedef enum {
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_UVRSD_UINT32 = 0,
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_UVRSD_VFPX = 1,
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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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} _Unwind_VRS_DataRepresentation;
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typedef enum {
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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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} _Unwind_VRS_Result;
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extern void _Unwind_Complete(_Unwind_Exception* exception_object);
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extern _Unwind_VRS_Result
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_Unwind_VRS_Get(_Unwind_Context *context, _Unwind_VRS_RegClass regclass,
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uint32_t regno, _Unwind_VRS_DataRepresentation representation,
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void *valuep);
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extern _Unwind_VRS_Result
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_Unwind_VRS_Set(_Unwind_Context *context, _Unwind_VRS_RegClass regclass,
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uint32_t regno, _Unwind_VRS_DataRepresentation representation,
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void *valuep);
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extern _Unwind_VRS_Result
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_Unwind_VRS_Pop(_Unwind_Context *context, _Unwind_VRS_RegClass regclass,
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uint32_t discriminator,
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_Unwind_VRS_DataRepresentation representation);
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#endif
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#if !defined(_LIBUNWIND_ARM_EHABI)
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extern uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index);
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extern void _Unwind_SetGR(struct _Unwind_Context *context, int index,
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uintptr_t new_value);
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extern uintptr_t _Unwind_GetIP(struct _Unwind_Context *context);
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extern void _Unwind_SetIP(struct _Unwind_Context *, uintptr_t new_value);
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#else // defined(_LIBUNWIND_ARM_EHABI)
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#if defined(_LIBUNWIND_UNWIND_LEVEL1_EXTERNAL_LINKAGE)
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#define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 extern
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#else
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#define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 static __inline__
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#endif
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// These are de facto helper functions for ARM, which delegate the function
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// calls to _Unwind_VRS_Get/Set(). These are not a part of ARM EHABI
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// specification, thus these function MUST be inlined. Please don't replace
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// these with the "extern" function declaration; otherwise, the program
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// including this <unwind.h> header won't be ABI compatible and will result in
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// link error when we are linking the program with libgcc.
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_LIBUNWIND_EXPORT_UNWIND_LEVEL1
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uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index) {
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uintptr_t value = 0;
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_Unwind_VRS_Get(context, _UVRSC_CORE, (uint32_t)index, _UVRSD_UINT32, &value);
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return value;
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}
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_LIBUNWIND_EXPORT_UNWIND_LEVEL1
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void _Unwind_SetGR(struct _Unwind_Context *context, int index,
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uintptr_t value) {
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_Unwind_VRS_Set(context, _UVRSC_CORE, (uint32_t)index, _UVRSD_UINT32, &value);
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}
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_LIBUNWIND_EXPORT_UNWIND_LEVEL1
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uintptr_t _Unwind_GetIP(struct _Unwind_Context *context) {
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// remove the thumb-bit before returning
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return _Unwind_GetGR(context, 15) & (~(uintptr_t)0x1);
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}
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_LIBUNWIND_EXPORT_UNWIND_LEVEL1
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void _Unwind_SetIP(struct _Unwind_Context *context, uintptr_t value) {
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uintptr_t thumb_bit = _Unwind_GetGR(context, 15) & ((uintptr_t)0x1);
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_Unwind_SetGR(context, 15, value | thumb_bit);
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}
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#endif // defined(_LIBUNWIND_ARM_EHABI)
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extern uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context);
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extern uintptr_t
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_Unwind_GetLanguageSpecificData(struct _Unwind_Context *context);
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173
libunwind/include/unwind_arm_ehabi.h
Normal file
173
libunwind/include/unwind_arm_ehabi.h
Normal file
@ -0,0 +1,173 @@
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//===------------------------------- unwind.h -----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//
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// C++ ABI Level 1 ABI documented at:
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// https://github.com/ARM-software/abi-aa/blob/main/ehabi32/ehabi32.rst
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//
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//===----------------------------------------------------------------------===//
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#ifndef __ARM_EHABI_UNWIND_H__
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#define __ARM_EHABI_UNWIND_H__
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typedef uint32_t _Unwind_State;
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static const _Unwind_State _US_VIRTUAL_UNWIND_FRAME = 0;
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static const _Unwind_State _US_UNWIND_FRAME_STARTING = 1;
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static const _Unwind_State _US_UNWIND_FRAME_RESUME = 2;
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static const _Unwind_State _US_ACTION_MASK = 3;
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/* Undocumented flag for force unwinding. */
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static const _Unwind_State _US_FORCE_UNWIND = 8;
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typedef uint32_t _Unwind_EHT_Header;
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struct _Unwind_Control_Block;
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typedef struct _Unwind_Control_Block _Unwind_Control_Block;
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typedef struct _Unwind_Control_Block _Unwind_Exception; /* Alias */
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struct _Unwind_Control_Block {
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uint64_t exception_class;
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void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block*);
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/* Unwinder cache, private fields for the unwinder's use */
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struct {
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uint32_t reserved1; /* init reserved1 to 0, then don't touch */
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uint32_t reserved2;
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uint32_t reserved3;
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uint32_t reserved4;
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uint32_t reserved5;
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} unwinder_cache;
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/* Propagation barrier cache (valid after phase 1): */
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struct {
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uint32_t sp;
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uint32_t bitpattern[5];
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} barrier_cache;
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/* Cleanup cache (preserved over cleanup): */
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struct {
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uint32_t bitpattern[4];
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} cleanup_cache;
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/* Pr cache (for pr's benefit): */
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struct {
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uint32_t fnstart; /* function start address */
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_Unwind_EHT_Header* ehtp; /* pointer to EHT entry header word */
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uint32_t additional;
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uint32_t reserved1;
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} pr_cache;
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long long int :0; /* Enforce the 8-byte alignment */
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} __attribute__((__aligned__(8)));
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typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
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(_Unwind_State state,
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_Unwind_Exception* exceptionObject,
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struct _Unwind_Context* context);
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typedef _Unwind_Reason_Code (*_Unwind_Personality_Fn)(
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_Unwind_State state, _Unwind_Exception *exceptionObject,
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struct _Unwind_Context *context);
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#ifdef __cplusplus
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extern "C" {
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#endif
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//
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// The following are the base functions documented by the C++ ABI
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//
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#ifdef __USING_SJLJ_EXCEPTIONS__
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extern _Unwind_Reason_Code
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_Unwind_SjLj_RaiseException(_Unwind_Exception *exception_object);
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extern void _Unwind_SjLj_Resume(_Unwind_Exception *exception_object);
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#else
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extern _Unwind_Reason_Code
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_Unwind_RaiseException(_Unwind_Exception *exception_object);
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extern void _Unwind_Resume(_Unwind_Exception *exception_object);
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#endif
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extern void _Unwind_DeleteException(_Unwind_Exception *exception_object);
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typedef enum {
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_UVRSC_CORE = 0, /* integer register */
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_UVRSC_VFP = 1, /* vfp */
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_UVRSC_WMMXD = 3, /* Intel WMMX data register */
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_UVRSC_WMMXC = 4 /* Intel WMMX control register */
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} _Unwind_VRS_RegClass;
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typedef enum {
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_UVRSD_UINT32 = 0,
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_UVRSD_VFPX = 1,
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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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} _Unwind_VRS_DataRepresentation;
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typedef enum {
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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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} _Unwind_VRS_Result;
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extern void _Unwind_Complete(_Unwind_Exception* exception_object);
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extern _Unwind_VRS_Result
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_Unwind_VRS_Get(_Unwind_Context *context, _Unwind_VRS_RegClass regclass,
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uint32_t regno, _Unwind_VRS_DataRepresentation representation,
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void *valuep);
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extern _Unwind_VRS_Result
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_Unwind_VRS_Set(_Unwind_Context *context, _Unwind_VRS_RegClass regclass,
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uint32_t regno, _Unwind_VRS_DataRepresentation representation,
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void *valuep);
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extern _Unwind_VRS_Result
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_Unwind_VRS_Pop(_Unwind_Context *context, _Unwind_VRS_RegClass regclass,
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uint32_t discriminator,
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_Unwind_VRS_DataRepresentation representation);
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#if defined(_LIBUNWIND_UNWIND_LEVEL1_EXTERNAL_LINKAGE)
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#define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 extern
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#else
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#define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 static __inline__
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#endif
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// These are de facto helper functions for ARM, which delegate the function
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// calls to _Unwind_VRS_Get/Set(). These are not a part of ARM EHABI
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// specification, thus these function MUST be inlined. Please don't replace
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// these with the "extern" function declaration; otherwise, the program
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// including this <unwind.h> header won't be ABI compatible and will result in
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// link error when we are linking the program with libgcc.
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_LIBUNWIND_EXPORT_UNWIND_LEVEL1
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uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index) {
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uintptr_t value = 0;
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_Unwind_VRS_Get(context, _UVRSC_CORE, (uint32_t)index, _UVRSD_UINT32, &value);
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return value;
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}
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_LIBUNWIND_EXPORT_UNWIND_LEVEL1
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void _Unwind_SetGR(struct _Unwind_Context *context, int index,
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uintptr_t value) {
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_Unwind_VRS_Set(context, _UVRSC_CORE, (uint32_t)index, _UVRSD_UINT32, &value);
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}
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_LIBUNWIND_EXPORT_UNWIND_LEVEL1
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uintptr_t _Unwind_GetIP(struct _Unwind_Context *context) {
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// remove the thumb-bit before returning
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return _Unwind_GetGR(context, 15) & (~(uintptr_t)0x1);
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}
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_LIBUNWIND_EXPORT_UNWIND_LEVEL1
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void _Unwind_SetIP(struct _Unwind_Context *context, uintptr_t value) {
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uintptr_t thumb_bit = _Unwind_GetGR(context, 15) & ((uintptr_t)0x1);
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_Unwind_SetGR(context, 15, value | thumb_bit);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif // __ARM_EHABI_UNWIND_H__
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83
libunwind/include/unwind_itanium.h
Normal file
83
libunwind/include/unwind_itanium.h
Normal file
@ -0,0 +1,83 @@
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//===------------------------------- unwind.h -----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//
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// C++ ABI Level 1 ABI documented at:
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// https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
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//
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//===----------------------------------------------------------------------===//
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#ifndef __ITANIUM_UNWIND_H__
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#define __ITANIUM_UNWIND_H__
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struct _Unwind_Context; // opaque
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struct _Unwind_Exception; // forward declaration
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typedef struct _Unwind_Exception _Unwind_Exception;
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struct _Unwind_Exception {
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uint64_t exception_class;
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void (*exception_cleanup)(_Unwind_Reason_Code reason,
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_Unwind_Exception *exc);
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#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__)
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uintptr_t private_[6];
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#else
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uintptr_t private_1; // non-zero means forced unwind
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uintptr_t private_2; // holds sp that phase1 found for phase2 to use
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#endif
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#if __SIZEOF_POINTER__ == 4
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// The implementation of _Unwind_Exception uses an attribute mode on the
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// above fields which has the side effect of causing this whole struct to
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// round up to 32 bytes in size (48 with SEH). To be more explicit, we add
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// pad fields added for binary compatibility.
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uint32_t reserved[3];
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#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,
|
||||
_Unwind_Action actions,
|
||||
uint64_t exceptionClass,
|
||||
_Unwind_Exception* exceptionObject,
|
||||
struct _Unwind_Context* context,
|
||||
void* stop_parameter );
|
||||
|
||||
typedef _Unwind_Reason_Code (*_Unwind_Personality_Fn)(
|
||||
int version, _Unwind_Action actions, uint64_t exceptionClass,
|
||||
_Unwind_Exception *exceptionObject, struct _Unwind_Context *context);
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
//
|
||||
// The following are the base functions documented by the C++ ABI
|
||||
//
|
||||
#ifdef __USING_SJLJ_EXCEPTIONS__
|
||||
extern _Unwind_Reason_Code
|
||||
_Unwind_SjLj_RaiseException(_Unwind_Exception *exception_object);
|
||||
extern void _Unwind_SjLj_Resume(_Unwind_Exception *exception_object);
|
||||
#else
|
||||
extern _Unwind_Reason_Code
|
||||
_Unwind_RaiseException(_Unwind_Exception *exception_object);
|
||||
extern void _Unwind_Resume(_Unwind_Exception *exception_object);
|
||||
#endif
|
||||
extern void _Unwind_DeleteException(_Unwind_Exception *exception_object);
|
||||
|
||||
|
||||
extern uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index);
|
||||
extern void _Unwind_SetGR(struct _Unwind_Context *context, int index,
|
||||
uintptr_t new_value);
|
||||
extern uintptr_t _Unwind_GetIP(struct _Unwind_Context *context);
|
||||
extern void _Unwind_SetIP(struct _Unwind_Context *, uintptr_t new_value);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif // __ITANIUM_UNWIND_H__
|
||||
@ -47,6 +47,8 @@ set(LIBUNWIND_HEADERS
|
||||
UnwindCursor.hpp
|
||||
../include/libunwind.h
|
||||
../include/unwind.h
|
||||
../include/unwind_itanium.h
|
||||
../include/unwind_arm_ehabi.h
|
||||
)
|
||||
if(APPLE)
|
||||
list(APPEND LIBUNWIND_HEADERS
|
||||
|
||||
Loading…
Reference in New Issue
Block a user