| 文件 | 最后提交记录 | 最后更新时间 |
|---|---|---|
[libunwind] Silence warnings about unused variables. NFC. This variable was considered unused when NDEBUG was defined. Differential Revision: https://reviews.llvm.org/D124911 | 4 年前 | |
[runtimes] Introduce object libraries This is a variant of D116689 rebased on top of the new (proposed) ABI refactoring in D120727. It should conserve the basic properties of the original patch by @phosek, except it also allows cleaning up the merging of libc++abi into libc++ from the libc++ side. Differential Revision: https://reviews.llvm.org/D125393 | 4 年前 | |
[runtimes][NFC] Remove filenames at the top of the license notice We've stopped doing it in libc++ for a while now because these names would end up rotting as we move things around and copy/paste stuff. This cleans up all the existing files so as to stop the spreading as people copy-paste headers around. | 4 年前 | |
[NFC] [libunwind] turn assert into static_assert Reviewed By: #libunwind, MaskRay Differential Revision: https://reviews.llvm.org/D126987 | 4 年前 | |
[libunwind] [sparc] Add SPARCv9 support Adds libunwind support for SPARCv9 (aka sparc64). This is a rebase of @kettenis' patch D32450, which I created (with his permission) because the original review has become inactive. The changes are of a cosmetic nature to make it fit better with the new code style, and to reuse the existing SPARCv8 code, whenever possible. Please let me know if I posted this on the wrong place. Also, the summary of the original review is reproduced below: > This adds unwinder support for 64-bit SPARC (aka SPARCv9). The implementation was done on OpenBSD/sparc64, so it takes StackGhost into account: > > https://www.usenix.org/legacy/publications/library/proceedings/sec01/full_papers/frantzen/frantzen_html/index.html > > Since StackGhost xor's return addresses with a random cookie before storing them on the stack, the unwinder has to do some extra work to recover those. This is done by introducing a new kRegisterInCFADecrypt "location" type that is used to implement the DW_CFA_GNU_window_save opcode. That implementation is SPARC-specific, but should work for 32-bit SPARC as well. DW_CFA_GNU_window_save is only ever generated on SPARC as far as I know. Co-authored-by: Mark Kettenis Reviewed By: #libunwind, thesamesam, MaskRay, Arfrever Differential Revision: https://reviews.llvm.org/D116857 | 4 年前 | |
[libunwind] Add more information to eh_frame_hdr version error This makes it easier to find the offending ELF file. Reviewed By: #libunwind, MaskRay Differential Revision: https://reviews.llvm.org/D126841 | 4 年前 | |
[libunwind][DWARF] Fix end of .eh_frame calculation * When .eh_frame is located using .eh_frame_hdr (PT_GNU_EH_FRAME), the start of .eh_frame is known, but not the size. In this case, the unwinder must rely on a terminator present at the end of .eh_frame. Set dwarf_section_length to UINTPTR_MAX to indicate this. * Add a new field, text_segment_length, that the FrameHeaderCache uses to track the size of the PT_LOAD segment indicated by dso_base. * Compute ehSectionEnd by adding sectionLength to ehSectionStart, never to fdeHint. Fixes PR46829. Differential Revision: https://reviews.llvm.org/D87750 | 5 年前 | |
[runtimes][NFC] Remove filenames at the top of the license notice We've stopped doing it in libc++ for a while now because these names would end up rotting as we move things around and copy/paste stuff. This cleans up all the existing files so as to stop the spreading as people copy-paste headers around. | 4 年前 | |
[NFC] [libunwind] turn assert into static_assert Reviewed By: #libunwind, MaskRay Differential Revision: https://reviews.llvm.org/D126987 | 4 年前 | |
[libunwind,EHABI,ARM] Fix get/set of RA_AUTH_CODE. According to EHABI32 §8.5.2, the PAC for the return address of a function described in an exception table is supposed to be addressed in the _Unwind_VRS_{Get,Set} API by setting regclass=_UVRSC_PSEUDO and regno=0. (The space of 'regno' values is independent for each regclass, and for _UVRSC_PSEUDO, there is only one valid regno so far.) That is indeed what libunwind's _Unwind_VRS_{Get,Set} functions expect to receive. But at two call sites, the wrong values are passed in: regno is being set to UNW_ARM_RA_AUTH_CODE (0x8F) instead of 0, and in one case, regclass is _UVRSC_CORE instead of _UVRSC_PSEUDO. As a result, those calls to _Unwind_VRS_{Get,Set} return _UVRSR_FAILED, which their callers ignore. So if you compile in the AUTG instruction that actually validates the PAC, it will try to validate what's effectively an uninitialised register as an authentication code, and trigger a CPU fault even on correct exception unwinding. Reviewed By: danielkiss Differential Revision: https://reviews.llvm.org/D128522 | 3 年前 | |
[runtimes][NFC] Remove filenames at the top of the license notice We've stopped doing it in libc++ for a while now because these names would end up rotting as we move things around and copy/paste stuff. This cleans up all the existing files so as to stop the spreading as people copy-paste headers around. | 4 年前 | |
[libunwind] Don't store a predecremented PC when using SEH This fixes unwinding in boundary cases on ARM with SEH. In the case of ARM/Thumb, disp->ControlPc points at the following instruction, with the thumb bit set. Thus by decrementing 1, it still points at the next instruction. To achieve the desired effect of pointing at the previous instruction, one first has to strip out the thumb bit, then do the decrement by 1 to reach the previous instruction. When libcxxabi looks for call site ranges, it already does _Unwind_GetIP(context) - 1 (in scan_eh_tab in libcxxabi/src/cxa_personality.cpp), so we shouldn't do the corresponding - 1 multiple times. In the case of libcxxabi on Thumb, funcStart (still in scan_eh_tab) may have the thumb bit set. If the program counter address is decremented both in libunwind (first removing the thumb bit, then decremented), and then libcxxabi decrements it further, and compares with a funcStart with the thumb bit set, it could point to one byte before the start of the call site. Thus: This modification makes libunwind with SEH work with libcxxabi on Thumb, in settings where libunwind and libcxxabi worked fine with Dwarf before. For existing cases with libunwind with SEH (on x86_64 and aarch64), this modification doesn't break any of my testcases. Differential Revision: https://reviews.llvm.org/D126869 | 4 年前 | |
[runtimes][NFC] Remove filenames at the top of the license notice We've stopped doing it in libc++ for a while now because these names would end up rotting as we move things around and copy/paste stuff. This cleans up all the existing files so as to stop the spreading as people copy-paste headers around. | 4 年前 | |
[libunwind][SystemZ] Use process_vm_readv to avoid potential segfaults Fix potential crashes during unwind when checking for signal frames and the current PC is invalid. The same bug was fixed for aarch64 in https://reviews.llvm.org/D126343. Reviewed by: MaskRay Differential Revision: https://reviews.llvm.org/D129856 | 3 年前 | |
[libunwind][AIX] implementation of the unwinder for AIX Summary: This patch contains the implementation of the unwinder for IBM AIX. AIX does not support the eh_frame section. Instead, the traceback table located at the end of each function provides the information for stack unwinding and EH. In this patch macro _LIBUNWIND_SUPPORT_TBTAB_UNWIND is used to guard code for AIX traceback table based unwinding. Function getInfoFromTBTable() and stepWithTBTable() are added to get the EH information from the traceback table and to step up the stack respectively. There are two kinds of LSDA information for EH on AIX, the state table and the range table. The state table is used by the previous version of the IBM XL compiler, i.e., xlC and xlclang++. The DWARF based range table is used by AIX clang++. The traceback table has flags to differentiate these cases. For the range table, relative addresses are calculated using a base of DW_EH_PE_datarel, which is the TOC base of the module where the function of the current frame belongs. Two personality routines are employed to handle these two different LSDAs, __xlcxx_personality_v0() for the state table and __xlcxx_personality_v1() for the range table. Since the traceback table does not have the information of the personality for the state table approach, its personality __xlcxx_personality_v0() is dynamically resolved as the handler for the state table. For the range table, the locations of the LSDA and its associated personality routine are found in the traceback table. Assembly code for 32- and 64-bit PowerPC in UnwindRegistersRestore.S and UnwindRegistersSave.S are modified so that it can be consumed by the GNU flavor assembler and the AIX assembler. The restoration of vector registers does not check VRSAVE on AIX because VRSAVE is not used in the AIX ABI. Reviewed by: MaskRay, compnerd, cebowleratibm, sfertile, libunwind Differential Revision: https://reviews.llvm.org/D100132 | 4 年前 | |
[libunwind][AIX] implementation of the unwinder for AIX Summary: This patch contains the implementation of the unwinder for IBM AIX. AIX does not support the eh_frame section. Instead, the traceback table located at the end of each function provides the information for stack unwinding and EH. In this patch macro _LIBUNWIND_SUPPORT_TBTAB_UNWIND is used to guard code for AIX traceback table based unwinding. Function getInfoFromTBTable() and stepWithTBTable() are added to get the EH information from the traceback table and to step up the stack respectively. There are two kinds of LSDA information for EH on AIX, the state table and the range table. The state table is used by the previous version of the IBM XL compiler, i.e., xlC and xlclang++. The DWARF based range table is used by AIX clang++. The traceback table has flags to differentiate these cases. For the range table, relative addresses are calculated using a base of DW_EH_PE_datarel, which is the TOC base of the module where the function of the current frame belongs. Two personality routines are employed to handle these two different LSDAs, __xlcxx_personality_v0() for the state table and __xlcxx_personality_v1() for the range table. Since the traceback table does not have the information of the personality for the state table approach, its personality __xlcxx_personality_v0() is dynamically resolved as the handler for the state table. For the range table, the locations of the LSDA and its associated personality routine are found in the traceback table. Assembly code for 32- and 64-bit PowerPC in UnwindRegistersRestore.S and UnwindRegistersSave.S are modified so that it can be consumed by the GNU flavor assembler and the AIX assembler. The restoration of vector registers does not check VRSAVE on AIX because VRSAVE is not used in the AIX ABI. Reviewed by: MaskRay, compnerd, cebowleratibm, sfertile, libunwind Differential Revision: https://reviews.llvm.org/D100132 | 4 年前 | |
[libunwind] Add SystemZ support Add support for the SystemZ (s390x) architecture to libunwind. Support should be feature-complete with the exception of unwinding from signal handlers (to be added later). Reviewed by: MaskRay Differential Revision: https://reviews.llvm.org/D124248 | 4 年前 | |
[libunwind] Add SystemZ support Add support for the SystemZ (s390x) architecture to libunwind. Support should be feature-complete with the exception of unwinding from signal handlers (to be added later). Reviewed by: MaskRay Differential Revision: https://reviews.llvm.org/D124248 | 4 年前 | |
[libunwind][AIX] implementation of the unwinder for AIX Summary: This patch contains the implementation of the unwinder for IBM AIX. AIX does not support the eh_frame section. Instead, the traceback table located at the end of each function provides the information for stack unwinding and EH. In this patch macro _LIBUNWIND_SUPPORT_TBTAB_UNWIND is used to guard code for AIX traceback table based unwinding. Function getInfoFromTBTable() and stepWithTBTable() are added to get the EH information from the traceback table and to step up the stack respectively. There are two kinds of LSDA information for EH on AIX, the state table and the range table. The state table is used by the previous version of the IBM XL compiler, i.e., xlC and xlclang++. The DWARF based range table is used by AIX clang++. The traceback table has flags to differentiate these cases. For the range table, relative addresses are calculated using a base of DW_EH_PE_datarel, which is the TOC base of the module where the function of the current frame belongs. Two personality routines are employed to handle these two different LSDAs, __xlcxx_personality_v0() for the state table and __xlcxx_personality_v1() for the range table. Since the traceback table does not have the information of the personality for the state table approach, its personality __xlcxx_personality_v0() is dynamically resolved as the handler for the state table. For the range table, the locations of the LSDA and its associated personality routine are found in the traceback table. Assembly code for 32- and 64-bit PowerPC in UnwindRegistersRestore.S and UnwindRegistersSave.S are modified so that it can be consumed by the GNU flavor assembler and the AIX assembler. The restoration of vector registers does not check VRSAVE on AIX because VRSAVE is not used in the AIX ABI. Reviewed by: MaskRay, compnerd, cebowleratibm, sfertile, libunwind Differential Revision: https://reviews.llvm.org/D100132 | 4 年前 | |
[runtimes][NFC] Remove filenames at the top of the license notice We've stopped doing it in libc++ for a while now because these names would end up rotting as we move things around and copy/paste stuff. This cleans up all the existing files so as to stop the spreading as people copy-paste headers around. | 4 年前 | |
[libunwind][AIX] implementation of the unwinder for AIX Summary: This is an add-on patch to address comments. - Replace #elif in file <assembly.h> with #else as suggested; - Reversed the indentation changes in the main patch. Differential Revision: https://reviews.llvm.org/D100132 | 4 年前 | |
Add some prototypes to fix -Wstrict-prototypes. NFC | 4 年前 | |
[libunwind] Add SystemZ support Add support for the SystemZ (s390x) architecture to libunwind. Support should be feature-complete with the exception of unwinding from signal handlers (to be added later). Reviewed by: MaskRay Differential Revision: https://reviews.llvm.org/D124248 | 4 年前 | |
[runtimes][NFC] Remove filenames at the top of the license notice We've stopped doing it in libc++ for a while now because these names would end up rotting as we move things around and copy/paste stuff. This cleans up all the existing files so as to stop the spreading as people copy-paste headers around. | 4 年前 | |
[libunwind] Add SystemZ support Add support for the SystemZ (s390x) architecture to libunwind. Support should be feature-complete with the exception of unwinding from signal handlers (to be added later). Reviewed by: MaskRay Differential Revision: https://reviews.llvm.org/D124248 | 4 年前 | |
[libunwind][AIX] implementation of the unwinder for AIX Summary: This patch contains the implementation of the unwinder for IBM AIX. AIX does not support the eh_frame section. Instead, the traceback table located at the end of each function provides the information for stack unwinding and EH. In this patch macro _LIBUNWIND_SUPPORT_TBTAB_UNWIND is used to guard code for AIX traceback table based unwinding. Function getInfoFromTBTable() and stepWithTBTable() are added to get the EH information from the traceback table and to step up the stack respectively. There are two kinds of LSDA information for EH on AIX, the state table and the range table. The state table is used by the previous version of the IBM XL compiler, i.e., xlC and xlclang++. The DWARF based range table is used by AIX clang++. The traceback table has flags to differentiate these cases. For the range table, relative addresses are calculated using a base of DW_EH_PE_datarel, which is the TOC base of the module where the function of the current frame belongs. Two personality routines are employed to handle these two different LSDAs, __xlcxx_personality_v0() for the state table and __xlcxx_personality_v1() for the range table. Since the traceback table does not have the information of the personality for the state table approach, its personality __xlcxx_personality_v0() is dynamically resolved as the handler for the state table. For the range table, the locations of the LSDA and its associated personality routine are found in the traceback table. Assembly code for 32- and 64-bit PowerPC in UnwindRegistersRestore.S and UnwindRegistersSave.S are modified so that it can be consumed by the GNU flavor assembler and the AIX assembler. The restoration of vector registers does not check VRSAVE on AIX because VRSAVE is not used in the AIX ABI. Reviewed by: MaskRay, compnerd, cebowleratibm, sfertile, libunwind Differential Revision: https://reviews.llvm.org/D100132 | 4 年前 |
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