1 //===------------------------- Unwind-EHABI.hpp ---------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef __UNWIND_EHABI_H__ 11 #define __UNWIND_EHABI_H__ 12 13 #include <__libunwind_config.h> 14 15 #if defined(_LIBUNWIND_ARM_EHABI) 16 17 #include <stdint.h> 18 #include <unwind.h> 19 20 // Unable to unwind in the ARM index table (section 5 EHABI). 21 #define UNW_EXIDX_CANTUNWIND 0x1 22 23 static inline uint32_t signExtendPrel31(uint32_t data) { 24 return data | ((data & 0x40000000u) << 1); 25 } 26 27 static inline uint32_t readPrel31(const uint32_t *data) { 28 return (((uint32_t)(uintptr_t)data) + signExtendPrel31(*data)); 29 } 30 31 #if defined(__cplusplus) 32 extern "C" { 33 #endif 34 35 extern _Unwind_Reason_Code __aeabi_unwind_cpp_pr0( 36 _Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context); 37 38 extern _Unwind_Reason_Code __aeabi_unwind_cpp_pr1( 39 _Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context); 40 41 extern _Unwind_Reason_Code __aeabi_unwind_cpp_pr2( 42 _Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context); 43 44 #if defined(__cplusplus) 45 } // extern "C" 46 #endif 47 48 #endif // defined(_LIBUNWIND_ARM_EHABI) 49 50 #endif // __UNWIND_EHABI_H__ 51