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| author | Koakuma <koachan@protonmail.com> | 2022-02-05 13:08:26 -0800 |
|---|---|---|
| committer | Fangrui Song <i@maskray.me> | 2022-02-05 13:08:26 -0800 |
| commit | 2b9554b8850192bdd86c02eb671de1d866df8d87 (patch) | |
| tree | 12c7ee9cc498c28868f30bba4483b82234f61248 /libunwind/include | |
| parent | 527654dcebf83052ec05c087b98dd16c2313e9f9 (diff) | |
| download | llvm-2b9554b8850192bdd86c02eb671de1d866df8d87.tar.gz | |
[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
Diffstat (limited to 'libunwind/include')
| -rw-r--r-- | libunwind/include/__libunwind_config.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libunwind/include/__libunwind_config.h b/libunwind/include/__libunwind_config.h index 67527d9da404..e87bcf40034f 100644 --- a/libunwind/include/__libunwind_config.h +++ b/libunwind/include/__libunwind_config.h @@ -23,6 +23,7 @@ #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_OR1K 32 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_MIPS 65 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC 31 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC64 31 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_HEXAGON 34 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_RISCV 64 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER_VE 143 @@ -125,6 +126,12 @@ # error "Unsupported MIPS ABI and/or environment" # endif # define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_MIPS +#elif defined(__sparc__) && defined(__arch64__) +#define _LIBUNWIND_TARGET_SPARC64 1 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER \ + _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC64 +#define _LIBUNWIND_CONTEXT_SIZE 33 +#define _LIBUNWIND_CURSOR_SIZE 45 # elif defined(__sparc__) #define _LIBUNWIND_TARGET_SPARC 1 #define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC @@ -165,6 +172,7 @@ # define _LIBUNWIND_TARGET_MIPS_O32 1 # define _LIBUNWIND_TARGET_MIPS_NEWABI 1 # define _LIBUNWIND_TARGET_SPARC 1 +# define _LIBUNWIND_TARGET_SPARC64 1 # define _LIBUNWIND_TARGET_HEXAGON 1 # define _LIBUNWIND_TARGET_RISCV 1 # define _LIBUNWIND_TARGET_VE 1 |