mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-23 04:01:04 +01:00
78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
/*-
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef __arm__
|
|
#include <arm/setjmp.h>
|
|
#else /* !__arm__ */
|
|
|
|
#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_ */
|
|
|
|
#endif /* !__arm__ */
|