Rollback 10525: MIPS: Add signal context definitions for use with Android.

src/platform-linux.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 926 matching lines @@
 typedef struct sigcontext mcontext_t;
 typedef struct ucontext {
   uint32_t uc_flags;
   struct ucontext* uc_link;
   stack_t uc_stack;
   mcontext_t uc_mcontext;
   __sigset_t uc_sigmask;
 } ucontext_t;
 enum ArmRegisters {R15 = 15, R13 = 13, R11 = 11};
 
-#elif !defined(__GLIBC__) && defined(__mips__)
-  struct sigcontext {
-    unsigned int regmask;
-    unsigned int status;
-    unsigned long long pc;
-    unsigned long long gregs[32];
-    unsigned long long fpregs[32];
-    unsigned int acx;
-    unsigned int fpc_csr;
-    unsigned int fpc_eir;
-    unsigned int used_math;
-    unsigned int dsp;
-    unsigned long long mdhi;
-    unsigned long long mdlo;
-    unsigned long hi1;
-    unsigned long lo1;
-    unsigned long hi2;
-    unsigned long lo2;
-    unsigned long hi3;
-    unsigned long lo3;
-  };
-  typedef uint32_t __sigset_t;
-  typedef struct sigcontext mcontext_t;
-  typedef struct ucontext {
-    uint32_t uc_flags;
-    struct ucontext* uc_link;
-    stack_t uc_stack;
-    mcontext_t uc_mcontext;
-    __sigset_t uc_sigmask;
-  } ucontext_t;
-
 #endif
 
 
 static int GetThreadID() {
   // Glibc doesn't provide a wrapper for gettid(2).
 #if defined(ANDROID)
   return syscall(__NR_gettid);
 #else
   return syscall(SYS_gettid);
 #endif
@@ skipping 251 matching lines @@
 
 
 void Sampler::Stop() {
   ASSERT(IsActive());
   SignalSender::RemoveActiveSampler(this);
   SetActive(false);
 }
 
 
 } }  // namespace v8::internal