[sanitizer] Don't include <linux/user.h> in sanitizer_stoptheworld_li…

…nux_libcdep.cc on ARM Android

Turned out that adding defined(_arm_) in sanitizer_stoptheworld_linux_libcdep.cc breaks android arm with some toolchains.

.../llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc:36:11: fatal error:
      'linux/user.h' file not found
# include <linux/user.h>  // for pt_regs
          ^
1 error generated.

Context:
#if SANITIZER_ANDROID && defined(__arm__)
# include <linux/user.h>  // for pt_regs
#else

This patch removes corresponding #if SANITIZER_ANDROID && defined(__arm__) and a bit rearranges adjacent сode.

Differential Revision: https://reviews.llvm.org/D32128

llvm-svn: 300531

compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc

@@ -32,17 +32,13 @@
 #include <sys/types.h> // for pid_t
 #include <sys/uio.h> // for iovec
 #include <elf.h> // for NT_PRSTATUS
-#if SANITIZER_ANDROID && defined(__arm__)
-# include <linux/user.h>  // for pt_regs
-#else
-# ifdef __aarch64__
+#if defined(__aarch64__) && !SANITIZER_ANDROID
 // GLIBC 2.20+ sys/user does not include asm/ptrace.h
-#  include <asm/ptrace.h>
-# endif
-# include <sys/user.h>  // for user_regs_struct
-# if SANITIZER_ANDROID && SANITIZER_MIPS
-#   include <asm/reg.h>  // for mips SP register in sys/user.h
-# endif
+# include <asm/ptrace.h>
+#endif
+#include <sys/user.h>  // for user_regs_struct
+#if SANITIZER_ANDROID && SANITIZER_MIPS
+# include <asm/reg.h>  // for mips SP register in sys/user.h
 #endif
 #include <sys/wait.h> // for signal-related stuff