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

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Merged
merged 2 commits into from
Sep 14, 2024
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[LoongArch][sanitizer] Fix SC_ADDRERR_{RD,WR} missing in the musl environment #108557

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8f9d73b
[LoongArch][sanitizer] Fix SC_ADDRERR_{RD,WR} missing in the musl env…
heiher Sep 13, 2024
6df7169
Update the code formatting
heiher Sep 13, 2024
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12 changes: 12 additions & 0 deletions compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2018,6 +2018,18 @@ 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;
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