1 files changed, 73 insertions, 0 deletions
diff --git a/sys/arm64/include/setjmp.h b/sys/arm64/include/setjmp.h
new file mode 100644
index 000000000000..af11a246cd3f
--- /dev/null
+++ b/sys/arm64/include/setjmp.h
@@ -0,0 +1,73 @@
+/*-
+ * Copyright (c) 2014 Andrew Turner
+ * Copyright (c) 2014-2015 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Andrew Turner under
+ * sponsorship from the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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 with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _MACHINE_SETJMP_H_
+#define	_MACHINE_SETJMP_H_
+
+#include <sys/cdefs.h>
+
+/*
+ * We need to store:
+ *  - A magic value to differentiate the buffers
+ *  - The stack pointer
+ *  - The link register
+ *  - 11 general purpose registers
+ *  - 8 floating point registers
+ *  - The signal mask (128 bits)
+ * i.e. 24 64-bit words, round this up to 31(+1) 128-bit words to allow for
+ * CPU extensions with larger registers and stronger alignment requirements.
+ *
+ * The registers to save are: r19 to r29, and d8 to d15.
+ */
+#define	_JBLEN		31
+#define	_JB_SIGMASK	22
+
+/* This should only be needed in libc and may change */
+#ifdef __ASSEMBLER__
+#define	_JB_MAGIC__SETJMP	0xfb5d25837d7ff700
+#define	_JB_MAGIC_SETJMP	0xfb5d25837d7ff701
+#endif
+
+#ifndef __ASSEMBLER__
+/*
+ * jmp_buf and sigjmp_buf are encapsulated in different structs to force
+ * compile-time diagnostics for mismatches.  The structs are the same
+ * internally to avoid some run-time errors for mismatches.
+ */
+#if __BSD_VISIBLE || __POSIX_VISIBLE || __XSI_VISIBLE
+typedef struct _sigjmp_buf { __int128_t _sjb[_JBLEN + 1]; } sigjmp_buf[1];
+#endif
+
+typedef struct _jmp_buf { __int128_t _jb[_JBLEN + 1]; } jmp_buf[1];
+#endif /* __ASSEMBLER__ */
+
+#endif /* !_MACHINE_SETJMP_H_ */