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| author | Koakuma <koachan@protonmail.com> | 2022-02-13 22:16:22 +0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-02-13 17:16:22 +0200 |
| commit | 55fa349ad946aaa4e2ff5a5dc2a3f0d6bce64282 (patch) | |
| tree | fbd8365132d929851ec418d048a90aaafd1d575e /lib/libunwind/src/DwarfParser.hpp | |
| parent | b5f8fb85e64022ed1ee59ff70753577839ad41b6 (diff) | |
| download | zig-55fa349ad946aaa4e2ff5a5dc2a3f0d6bce64282.tar.gz zig-55fa349ad946aaa4e2ff5a5dc2a3f0d6bce64282.zip | |
Import SPARCv9 libunwind
Import LLVM's D32450/D116857 patch to enable unwinding support on
SPARCv9 systems.
Diffstat (limited to 'lib/libunwind/src/DwarfParser.hpp')
| -rw-r--r-- | lib/libunwind/src/DwarfParser.hpp | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/lib/libunwind/src/DwarfParser.hpp b/lib/libunwind/src/DwarfParser.hpp index de0eb6de9d..f0aa4085d3 100644 --- a/lib/libunwind/src/DwarfParser.hpp +++ b/lib/libunwind/src/DwarfParser.hpp @@ -71,6 +71,7 @@ public: kRegisterUnused, kRegisterUndefined, kRegisterInCFA, + kRegisterInCFADecrypt, // sparc64 specific kRegisterOffsetFromCFA, kRegisterInRegister, kRegisterAtExpression, @@ -723,7 +724,8 @@ bool CFI_Parser<A>::parseFDEInstructions(A &addressSpace, "DW_CFA_GNU_negative_offset_extended(%" PRId64 ")\n", offset); break; -#if defined(_LIBUNWIND_TARGET_AARCH64) || defined(_LIBUNWIND_TARGET_SPARC) +#if defined(_LIBUNWIND_TARGET_AARCH64) || defined(_LIBUNWIND_TARGET_SPARC) || \ + defined(_LIBUNWIND_TARGET_SPARC64) // The same constant is used to represent different instructions on // AArch64 (negate_ra_state) and SPARC (window_save). static_assert(DW_CFA_AARCH64_negate_ra_state == DW_CFA_GNU_window_save, @@ -757,8 +759,29 @@ bool CFI_Parser<A>::parseFDEInstructions(A &addressSpace, } break; #endif + +#if defined(_LIBUNWIND_TARGET_SPARC64) + // case DW_CFA_GNU_window_save: + case REGISTERS_SPARC64: + // Don't save %o0-%o7 on sparc64. + // https://reviews.llvm.org/D32450#736405 + + for (reg = UNW_SPARC_L0; reg <= UNW_SPARC_I7; reg++) { + if (reg == UNW_SPARC_I7) + results->setRegister( + reg, kRegisterInCFADecrypt, + ((int64_t)reg - UNW_SPARC_L0) * sizeof(pint_t), initialState); + else + results->setRegister( + reg, kRegisterInCFA, + ((int64_t)reg - UNW_SPARC_L0) * sizeof(pint_t), initialState); + } + _LIBUNWIND_TRACE_DWARF("DW_CFA_GNU_window_save\n"); + break; +#endif } break; + #else (void)arch; #endif |