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[LoongArch][sanitizer] Fix SC_ADDRERR_{RD,WR} missing in the musl environment (#108557)

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Fixes #108550

(cherry picked from commit 1825cf28dc83113200b623ebcf063eea35ade79a)
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hev 2024-09-14 11:19:34 +08:00 committed by Tobias Hieta
parent 22139b36d7
commit 910dde5780
1 changed files with 12 additions and 0 deletions
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12
compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
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@ -2014,6 +2014,18 @@ SignalContext::WriteFlag SignalContext::GetWriteFlag() const {
return Unknown;
return esr & ESR_ELx_WNR ? Write : Read;
# elif defined(__loongarch__)
// In the musl environment, the Linux kernel uapi sigcontext.h is not
// included in signal.h. To avoid missing the SC_ADDRERR_{RD,WR} macros,
// copy them here. The LoongArch Linux kernel uapi is already stable,
// so there's no need to worry about the value changing.
# ifndef SC_ADDRERR_RD
// Address error was due to memory load
# define SC_ADDRERR_RD (1 << 30)
# endif
# ifndef SC_ADDRERR_WR
// Address error was due to memory store
# define SC_ADDRERR_WR (1 << 31)
# endif
u32 flags = ucontext->uc_mcontext.__flags;
if (flags & SC_ADDRERR_RD)
return SignalContext::Read;