1 files changed, 78 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/ucontext.h b/sysdeps/unix/sysv/linux/aarch64/bits/ucontext.h
new file mode 100644
index 0000000000..b790a6c085
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/bits/ucontext.h
@@ -0,0 +1,78 @@
+/* Copyright (C) 1998-2020 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* System V/AArch64 ABI compliant context switching support.  */
+
+#ifndef _BITS_UCONTEXT_H
+#define _BITS_UCONTEXT_H	1
+
+#include <features.h>
+
+#include <bits/types/sigset_t.h>
+#include <bits/types/stack_t.h>
+
+#ifdef __USE_MISC
+# define __ctx(fld) fld
+#else
+# define __ctx(fld) __ ## fld
+#endif
+
+#ifdef __USE_MISC
+# include <bits/procfs.h>
+
+
+typedef elf_greg_t greg_t;
+
+/* Container for all general registers.  */
+typedef elf_gregset_t gregset_t;
+
+/* Structure to describe FPU registers.  */
+typedef elf_fpregset_t	fpregset_t;
+#endif
+
+/* Context to describe whole processor state.  This only describes
+   the core registers; coprocessor registers get saved elsewhere
+   (e.g. in uc_regspace, or somewhere unspecified on the stack
+   during non-RT signal handlers).  */
+typedef struct
+  {
+    unsigned long long int __ctx(fault_address);
+    unsigned long long int __ctx(regs)[31];
+    unsigned long long int __ctx(sp);
+    unsigned long long int __ctx(pc);
+    unsigned long long int __ctx(pstate);
+    /* This field contains extension records for additional processor
+       state such as the FP/SIMD state.  It has to match the definition
+       of the corresponding field in the sigcontext struct, see the
+       arch/arm64/include/uapi/asm/sigcontext.h linux header for details.  */
+    unsigned char __reserved[4096] __attribute__ ((__aligned__ (16)));
+  } mcontext_t;
+
+/* Userlevel context.  */
+typedef struct ucontext_t
+  {
+    unsigned long __ctx(uc_flags);
+    struct ucontext_t *uc_link;
+    stack_t uc_stack;
+    sigset_t uc_sigmask;
+    mcontext_t uc_mcontext;
+  } ucontext_t;
+
+#undef __ctx
+
+#endif /* bits/ucontext.h */