|  | // Copyright 2014 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_ARM64_LINUX_UCONTEXT_H_ | 
|  | #define SANDBOX_LINUX_SYSTEM_HEADERS_ARM64_LINUX_UCONTEXT_H_ | 
|  |  | 
|  | #if !defined(__BIONIC_HAVE_UCONTEXT_T) | 
|  | #include <asm/sigcontext.h> | 
|  | #include <signal.h> | 
|  | #include <stdint.h> | 
|  | // We also need greg_t for the sandbox, include it in this header as well. | 
|  | typedef uint64_t greg_t; | 
|  |  | 
|  | struct ucontext_t { | 
|  | unsigned long uc_flags; | 
|  | struct ucontext* uc_link; | 
|  | stack_t uc_stack; | 
|  | sigset_t uc_sigmask; | 
|  | /* glibc uses a 1024-bit sigset_t */ | 
|  | uint8_t unused[1024 / 8 - sizeof(sigset_t)]; | 
|  | /* last for future expansion */ | 
|  | struct sigcontext uc_mcontext; | 
|  | }; | 
|  |  | 
|  | #else | 
|  | #include <sys/ucontext.h> | 
|  | #endif  // __BIONIC_HAVE_UCONTEXT_T | 
|  |  | 
|  | #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_ARM64_LINUX_UCONTEXT_H_ |