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/*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)ucontext.h 8.1 (Berkeley) 6/10/93
* JNPR: ucontext.h,v 1.2 2007/08/09 11:23:32 katta
* $FreeBSD$
*/
#ifndef _MACHINE_UCONTEXT_H_
#define _MACHINE_UCONTEXT_H_
#ifndef _LOCORE
#if defined(_KERNEL) && !defined(KLD_MODULE) && !defined(_STANDALONE)
#include "opt_compat.h"
#endif
typedef struct __mcontext {
/*
* These fields must match the corresponding fields in struct
* sigcontext which follow 'sc_mask'. That way we can support
* struct sigcontext and ucontext_t at the same time.
*/
int mc_onstack; /* sigstack state to restore */
__register_t mc_pc; /* pc at time of signal */
__register_t mc_regs[32]; /* processor regs 0 to 31 */
__register_t sr; /* status register */
__register_t mullo, mulhi; /* mullo and mulhi registers... */
int mc_fpused; /* fp has been used */
f_register_t mc_fpregs[33]; /* fp regs 0 to 31 and csr */
__register_t mc_fpc_eir; /* fp exception instruction reg */
void *mc_tls; /* pointer to TLS area */
int __spare__[8]; /* XXX reserved */
} mcontext_t;
#if (defined(__mips_n32) || defined(__mips_n64)) && defined(COMPAT_FREEBSD32)
#include <compat/freebsd32/freebsd32_signal.h>
typedef struct __mcontext32 {
int mc_onstack;
int32_t mc_pc;
int32_t mc_regs[32];
int32_t sr;
int32_t mullo, mulhi;
int mc_fpused;
int32_t mc_fpregs[33];
int32_t mc_fpc_eir;
int32_t mc_tls;
int __spare__[8];
} mcontext32_t;
typedef struct __ucontext32 {
sigset_t uc_sigmask;
mcontext32_t uc_mcontext;
uint32_t uc_link;
struct sigaltstack32 uc_stack;
uint32_t uc_flags;
uint32_t __spare__[4];
} ucontext32_t;
#endif
#endif
#ifndef SZREG
#if defined(__mips_o32)
#define SZREG 4
#else
#define SZREG 8
#endif
#endif
/* offsets into mcontext_t */
#define UCTX_REG(x) (4 + SZREG + (x)*SZREG)
#define UCR_ZERO UCTX_REG(0)
#define UCR_AT UCTX_REG(1)
#define UCR_V0 UCTX_REG(2)
#define UCR_V1 UCTX_REG(3)
#define UCR_A0 UCTX_REG(4)
#define UCR_A1 UCTX_REG(5)
#define UCR_A2 UCTX_REG(6)
#define UCR_A3 UCTX_REG(7)
#define UCR_T0 UCTX_REG(8)
#define UCR_T1 UCTX_REG(9)
#define UCR_T2 UCTX_REG(10)
#define UCR_T3 UCTX_REG(11)
#define UCR_T4 UCTX_REG(12)
#define UCR_T5 UCTX_REG(13)
#define UCR_T6 UCTX_REG(14)
#define UCR_T7 UCTX_REG(15)
#define UCR_S0 UCTX_REG(16)
#define UCR_S1 UCTX_REG(17)
#define UCR_S2 UCTX_REG(18)
#define UCR_S3 UCTX_REG(19)
#define UCR_S4 UCTX_REG(20)
#define UCR_S5 UCTX_REG(21)
#define UCR_S6 UCTX_REG(22)
#define UCR_S7 UCTX_REG(23)
#define UCR_T8 UCTX_REG(24)
#define UCR_T9 UCTX_REG(25)
#define UCR_K0 UCTX_REG(26)
#define UCR_K1 UCTX_REG(27)
#define UCR_GP UCTX_REG(28)
#define UCR_SP UCTX_REG(29)
#define UCR_S8 UCTX_REG(30)
#define UCR_RA UCTX_REG(31)
#define UCR_SR UCTX_REG(32)
#define UCR_MDLO UCTX_REG(33)
#define UCR_MDHI UCTX_REG(34)
#endif /* !_MACHINE_UCONTEXT_H_ */
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