text: // Copyright (c) 2012 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #ifndef SANDBOX_LINUX_SYSTEM_HEADERS_ARM_LINUX_UCONTEXT_H_
  #define SANDBOX_LINUX_SYSTEM_HEADERS_ARM_LINUX_UCONTEXT_H_
  
  #include <stddef.h>
  
  #if !defined(__BIONIC_HAVE_UCONTEXT_T)
  #if !defined(__native_client_nonsfi__)
  #include <asm/sigcontext.h>
  #else
  // In PNaCl toolchain, sigcontext and stack_t is not defined. So here declare
  // them.
  struct sigcontext {
    unsigned long trap_no;
    unsigned long error_code;
    unsigned long oldmask;
    unsigned long arm_r0;
    unsigned long arm_r1;
    unsigned long arm_r2;
    unsigned long arm_r3;
    unsigned long arm_r4;
    unsigned long arm_r5;
    unsigned long arm_r6;
    unsigned long arm_r7;
    unsigned long arm_r8;
    unsigned long arm_r9;
    unsigned long arm_r10;
    unsigned long arm_fp;
    unsigned long arm_ip;
    unsigned long arm_sp;
    unsigned long arm_lr;
    unsigned long arm_pc;
    unsigned long arm_cpsr;
    unsigned long fault_address;
  };
  
  typedef struct sigaltstack {
    void* ss_sp;
    int ss_flags;
    size_t ss_size;
  } stack_t;
  
  #endif
  
  // We also need greg_t for the sandbox, include it in this header as well.
  typedef unsigned long greg_t;
  
  // typedef unsigned long sigset_t;
  typedef struct ucontext {
    unsigned long uc_flags;
    struct ucontext* uc_link;
    stack_t uc_stack;
    struct sigcontext uc_mcontext;
    sigset_t uc_sigmask;
    /* Allow for uc_sigmask growth.  Glibc uses a 1024-bit sigset_t.  */
    int __not_used[32 - (sizeof(sigset_t) / sizeof(int))];
    /* Last for extensibility.  Eight byte aligned because some
       coprocessors require eight byte alignment.  */
    unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
  } ucontext_t;
  
  #else
  #include <sys/ucontext.h>
  #endif  // __BIONIC_HAVE_UCONTEXT_T
  
  #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_ARM_LINUX_UCONTEXT_H_
  