1 files changed, 110 insertions, 0 deletions
diff --git a/sysdeps/arm/bits/ucontext.h b/sysdeps/arm/bits/ucontext.h
new file mode 100644
index 0000000000..236924384c
--- /dev/null
+++ b/sysdeps/arm/bits/ucontext.h
@@ -0,0 +1,110 @@
+/* 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/ARM 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>
+
+
+typedef int greg_t;
+
+/* Number of general registers.  */
+#define __NGREG	16
+#ifdef __USE_MISC
+# define NGREG	__NGREG
+#endif
+
+/* Container for all general registers.  */
+typedef greg_t gregset_t[__NGREG];
+
+#ifdef __USE_MISC
+/* Number of each register is the `gregset_t' array.  */
+enum
+{
+  R0 = 0,
+# define R0	R0
+  R1 = 1,
+# define R1	R1
+  R2 = 2,
+# define R2	R2
+  R3 = 3,
+# define R3	R3
+  R4 = 4,
+# define R4	R4
+  R5 = 5,
+# define R5	R5
+  R6 = 6,
+# define R6	R6
+  R7 = 7,
+# define R7	R7
+  R8 = 8,
+# define R8	R8
+  R9 = 9,
+# define R9	R9
+  R10 = 10,
+# define R10	R10
+  R11 = 11,
+# define R11	R11
+  R12 = 12,
+# define R12	R12
+  R13 = 13,
+# define R13	R13
+  R14 = 14,
+# define R14	R14
+  R15 = 15,
+# define R15	R15
+};
+#endif
+
+#ifdef __USE_MISC
+# define __ctx(fld) fld
+#else
+# define __ctx(fld) __ ## fld
+#endif
+
+/* Structure to describe FPU registers.  */
+typedef struct
+  {
+  } fpregset_t;
+
+/* Context to describe whole processor state.  */
+typedef struct
+  {
+    gregset_t __ctx(gregs);
+    fpregset_t __ctx(fpregs);
+  } mcontext_t;
+
+/* Userlevel context.  */
+typedef struct ucontext_t
+  {
+    unsigned long int __ctx(uc_flags);
+    struct ucontext_t *uc_link;
+    sigset_t uc_sigmask;
+    stack_t uc_stack;
+    mcontext_t uc_mcontext;
+    long int __glibc_reserved1[5];
+  } ucontext_t;
+
+#undef __ctx
+
+#endif /* bits/ucontext.h */