673484b341
Simplify:
defined(__ARM_DWARF_EH__) || !defined(__arm__)
to:
!defined(_LIBUNWIND_ARM_EHABI)
A later patch benefits from the simplicity. This change will result in
the two DWARF macros being defined when __USING_SJLJ_EXCEPTIONS__ is
defined, but:
* That's already the case with the __APPLE__ and _WIN32 clauses.
* That's also already the case with other architectures.
* With __USING_SJLJ_EXCEPTIONS__, most of the unwinder is #ifdef'ed
away.
Generally, when __USING_SJLJ_EXCEPTIONS__ is defined, most of the
libunwind code is removed by the preprocessor. e.g. None of the hpp
files are included, and almost all of the .c and .cpp files are defined
away, except in Unwind-sjlj.c. Unwind_AppleExtras.cpp is an exception
because it includes two hpp files, which it doesn't use. Remove the
unneeded includes for consistency with the general rule.
Reviewed By: steven_wu
Differential Revision: https://reviews.llvm.org/D86767
114 lines
4.6 KiB
C++
114 lines
4.6 KiB
C++
//===--------------------- Unwind_AppleExtras.cpp -------------------------===//
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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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#include "config.h"
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// static linker symbols to prevent wrong two level namespace for _Unwind symbols
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#if defined(__arm__)
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#define NOT_HERE_BEFORE_5_0(sym) \
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extern const char sym##_tmp30 __asm("$ld$hide$os3.0$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp30 = 0; \
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extern const char sym##_tmp31 __asm("$ld$hide$os3.1$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp31 = 0; \
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extern const char sym##_tmp32 __asm("$ld$hide$os3.2$_" #sym );\
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__attribute__((visibility("default"))) const char sym##_tmp32 = 0; \
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extern const char sym##_tmp40 __asm("$ld$hide$os4.0$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp40 = 0; \
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extern const char sym##_tmp41 __asm("$ld$hide$os4.1$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp41 = 0; \
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extern const char sym##_tmp42 __asm("$ld$hide$os4.2$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp42 = 0; \
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extern const char sym##_tmp43 __asm("$ld$hide$os4.3$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp43 = 0;
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#elif defined(__aarch64__)
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#define NOT_HERE_BEFORE_10_6(sym)
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#define NEVER_HERE(sym)
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#else
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#define NOT_HERE_BEFORE_10_6(sym) \
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extern const char sym##_tmp4 __asm("$ld$hide$os10.4$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp4 = 0; \
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extern const char sym##_tmp5 __asm("$ld$hide$os10.5$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp5 = 0;
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#define NEVER_HERE(sym) \
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extern const char sym##_tmp4 __asm("$ld$hide$os10.4$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp4 = 0; \
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extern const char sym##_tmp5 __asm("$ld$hide$os10.5$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp5 = 0; \
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extern const char sym##_tmp6 __asm("$ld$hide$os10.6$_" #sym ); \
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__attribute__((visibility("default"))) const char sym##_tmp6 = 0;
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#endif
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#if defined(_LIBUNWIND_BUILD_ZERO_COST_APIS)
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//
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// symbols in libSystem.dylib in 10.6 and later, but are in libgcc_s.dylib in
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// earlier versions
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//
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NOT_HERE_BEFORE_10_6(_Unwind_DeleteException)
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NOT_HERE_BEFORE_10_6(_Unwind_Find_FDE)
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NOT_HERE_BEFORE_10_6(_Unwind_ForcedUnwind)
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NOT_HERE_BEFORE_10_6(_Unwind_GetGR)
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NOT_HERE_BEFORE_10_6(_Unwind_GetIP)
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NOT_HERE_BEFORE_10_6(_Unwind_GetLanguageSpecificData)
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NOT_HERE_BEFORE_10_6(_Unwind_GetRegionStart)
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NOT_HERE_BEFORE_10_6(_Unwind_RaiseException)
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NOT_HERE_BEFORE_10_6(_Unwind_Resume)
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NOT_HERE_BEFORE_10_6(_Unwind_SetGR)
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NOT_HERE_BEFORE_10_6(_Unwind_SetIP)
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NOT_HERE_BEFORE_10_6(_Unwind_Backtrace)
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NOT_HERE_BEFORE_10_6(_Unwind_FindEnclosingFunction)
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NOT_HERE_BEFORE_10_6(_Unwind_GetCFA)
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NOT_HERE_BEFORE_10_6(_Unwind_GetDataRelBase)
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NOT_HERE_BEFORE_10_6(_Unwind_GetTextRelBase)
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NOT_HERE_BEFORE_10_6(_Unwind_Resume_or_Rethrow)
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NOT_HERE_BEFORE_10_6(_Unwind_GetIPInfo)
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NOT_HERE_BEFORE_10_6(__register_frame)
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NOT_HERE_BEFORE_10_6(__deregister_frame)
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//
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// symbols in libSystem.dylib for compatibility, but we don't want any new code
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// using them
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//
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NEVER_HERE(__register_frame_info_bases)
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NEVER_HERE(__register_frame_info)
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NEVER_HERE(__register_frame_info_table_bases)
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NEVER_HERE(__register_frame_info_table)
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NEVER_HERE(__register_frame_table)
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NEVER_HERE(__deregister_frame_info)
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NEVER_HERE(__deregister_frame_info_bases)
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#endif // defined(_LIBUNWIND_BUILD_ZERO_COST_APIS)
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#if defined(_LIBUNWIND_BUILD_SJLJ_APIS)
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//
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// symbols in libSystem.dylib in iOS 5.0 and later, but are in libgcc_s.dylib in
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// earlier versions
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//
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NOT_HERE_BEFORE_5_0(_Unwind_GetLanguageSpecificData)
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NOT_HERE_BEFORE_5_0(_Unwind_GetRegionStart)
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NOT_HERE_BEFORE_5_0(_Unwind_GetIP)
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NOT_HERE_BEFORE_5_0(_Unwind_SetGR)
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NOT_HERE_BEFORE_5_0(_Unwind_SetIP)
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NOT_HERE_BEFORE_5_0(_Unwind_DeleteException)
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NOT_HERE_BEFORE_5_0(_Unwind_SjLj_Register)
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NOT_HERE_BEFORE_5_0(_Unwind_GetGR)
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NOT_HERE_BEFORE_5_0(_Unwind_GetIPInfo)
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NOT_HERE_BEFORE_5_0(_Unwind_GetCFA)
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NOT_HERE_BEFORE_5_0(_Unwind_SjLj_Resume)
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NOT_HERE_BEFORE_5_0(_Unwind_SjLj_RaiseException)
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NOT_HERE_BEFORE_5_0(_Unwind_SjLj_Resume_or_Rethrow)
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NOT_HERE_BEFORE_5_0(_Unwind_SjLj_Unregister)
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#endif // defined(_LIBUNWIND_BUILD_SJLJ_APIS)
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