[PATCH] Add FreeBSD 9.2 support to asan_linux.cc

[Viktor Kutuzov]

Hi kcc, samsonov,

Segregated from D3031:
http://llvm-reviews.chandlerc.com/D3031

http://llvm-reviews.chandlerc.com/D3039

Files:
  lib/asan/asan_linux.cc

Index: lib/asan/asan_linux.cc
===================================================================
--- lib/asan/asan_linux.cc
+++ lib/asan/asan_linux.cc
@@ -39,6 +39,17 @@
 #include <sys/ucontext.h>
 #endif
 
+// x86_64 FreeBSD 9.2 and older define 64-bit register names in both 64-bit
+// and 32-bit modes.
+#if SANITIZER_FREEBSD
+#include <sys/param.h>
+# if __FreeBSD_version <= 902001  // v9.2
+# define mc_eip mc_rip
+# define mc_ebp mc_rbp
+# define mc_esp mc_rsp
+# endif
+#endif
+
 extern "C" void* _DYNAMIC;
 
 namespace __asan {
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