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[libunwind] Ensure zaDisable() is called in jumpto/returnto (NFC) (#167674)

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This is an NFC for now, as the SME checks for macOS platforms are not
implemented, so zaDisable() is a no-op, but both paths for resuming from
an exception should disable ZA.

This is a fixup for a recent change in #165066.
This commit is contained in:
Benjamin Maxwell
2025-11-13 08:57:19 +00:00
committed by GitHub
parent f038dfd22d
commit d2a2b169f6
1 changed files with 5 additions and 8 deletions
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13
libunwind/src/Registers.hpp
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@@ -1862,16 +1862,13 @@ public:
v128 getVectorRegister(int num) const;
void setVectorRegister(int num, v128 value);
static const char *getRegisterName(int num);
void jumpto(unsigned walkedFrames = 0) {
zaDisable();
__libunwind_Registers_arm64_jumpto(this, walkedFrames);
}
#ifdef _LIBUNWIND_TRACE_RET_INJECT
_LIBUNWIND_TRACE_NO_INLINE
void returnto(unsigned walkedFrames) {
__libunwind_Registers_arm64_jumpto(this, walkedFrames);
}
#else
void jumpto() {
zaDisable();
__libunwind_Registers_arm64_jumpto(this, 0);
}
void returnto(unsigned walkedFrames) { jumpto(walkedFrames); }
#endif
static constexpr int lastDwarfRegNum() {
return _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM64;