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b09096691a
Added libunwind from LLVM 17.0.6. The library includes functions required for C++ exception handling.
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
//===----------------------------------------------------------------------===//
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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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//===----------------------------------------------------------------------===//
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#ifndef __UNWIND_EHABI_H__
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#define __UNWIND_EHABI_H__
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#include "third_party/libunwind/include/__libunwind_config.h"
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#if defined(_LIBUNWIND_ARM_EHABI)
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#include "libc/isystem/stdint.h"
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#include "third_party/libunwind/include/unwind.h"
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// Unable to unwind in the ARM index table (section 5 EHABI).
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#define UNW_EXIDX_CANTUNWIND 0x1
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static inline uint32_t signExtendPrel31(uint32_t data) {
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return data | ((data & 0x40000000u) << 1);
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}
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static inline uint32_t readPrel31(const uint32_t *data) {
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return (((uint32_t)(uintptr_t)data) + signExtendPrel31(*data));
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}
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#if defined(__cplusplus)
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extern "C" {
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#endif
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extern _Unwind_Reason_Code __aeabi_unwind_cpp_pr0(
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_Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context);
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extern _Unwind_Reason_Code __aeabi_unwind_cpp_pr1(
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_Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context);
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extern _Unwind_Reason_Code __aeabi_unwind_cpp_pr2(
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_Unwind_State state, _Unwind_Control_Block *ucbp, _Unwind_Context *context);
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#if defined(__cplusplus)
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} // extern "C"
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#endif
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#endif // defined(_LIBUNWIND_ARM_EHABI)
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#endif // __UNWIND_EHABI_H__
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