[compiler-rt] 8d33f08 - [compiler-rt sanitizer] Use our own PTRACE_GETREGSET if it does not exist.

[Vitaly Buka via llvm-commits]

Author: Jeroen Dobbelaere
Date: 2020-12-09T01:08:14-08:00
New Revision: 8d33f08844a171472a59ef3f1ea6edb1e9fb9843

URL: https://github.com/llvm/llvm-project/commit/8d33f08844a171472a59ef3f1ea6edb1e9fb9843
DIFF: https://github.com/llvm/llvm-project/commit/8d33f08844a171472a59ef3f1ea6edb1e9fb9843.diff

LOG: [compiler-rt sanitizer] Use our own PTRACE_GETREGSET if it does not exist.

On RH66 does not support 'PTRACE_GETREGSET'. This change makes this part of compiler-rt build again on older os-es

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D91686

Added: 
    

Modified: 
    compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp

Removed: 
    


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diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
index 2ecf87b096a1..53cfddcfbe0b 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
@@ -490,6 +490,9 @@ typedef user_regs_struct regs_struct;
 #ifndef NT_X86_XSTATE
 #define NT_X86_XSTATE 0x202
 #endif
+#ifndef PTRACE_GETREGSET
+#define PTRACE_GETREGSET 0x4204
+#endif
 // Compiler may use FP registers to store pointers.
 static constexpr uptr kExtraRegs[] = {NT_X86_XSTATE, NT_FPREGSET};