1/*-
  2 * Copyright (c) 2014 Andrew Turner
  3 * Copyright (c) 2014-2015 The FreeBSD Foundation
  4 * All rights reserved.
  5 *
  6 * This software was developed by Andrew Turner under
  7 * sponsorship from the FreeBSD Foundation.
  8 *
  9 * Redistribution and use in source and binary forms, with or without
 10 * modification, are permitted provided that the following conditions
 11 * are met:
 12 * 1. Redistributions of source code must retain the above copyright
 13 *    notice, this list of conditions and the following disclaimer.
 14 * 2. Redistributions in binary form must reproduce the above copyright
 15 *    notice, this list of conditions and the following disclaimer in the
 16 *    documentation and/or other materials provided with the distribution.
 17 *
 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 28 * SUCH DAMAGE.
 29 */
 30
 31#ifdef __arm__
 32#include <arm/ucontext.h>
 33#else /* !__arm__ */
 34
 35#ifndef _MACHINE_UCONTEXT_H_
 36#define	_MACHINE_UCONTEXT_H_
 37
 38struct gpregs {
 39	__register_t	gp_x[30];
 40	__register_t	gp_lr;
 41	__register_t	gp_sp;
 42	__register_t	gp_elr;
 43	__uint64_t	gp_spsr;
 44};
 45
 46struct fpregs {
 47	__uint128_t	fp_q[32];
 48	__uint32_t	fp_sr;
 49	__uint32_t	fp_cr;
 50	int		fp_flags;
 51	int		fp_pad;
 52};
 53
 54/*
 55 * Support for registers that don't fit into gpregs or fpregs, e.g. SVE.
 56 * There are some registers that have been added so are optional. To support
 57 * these create an array of headers that point at the register data.
 58 */
 59struct arm64_reg_context {
 60	__uint32_t	ctx_id;
 61	__uint32_t	ctx_size;
 62};
 63
 64#define	ARM64_CTX_END		0xa5a5a5a5
 65#define	ARM64_CTX_SVE		0x00657673
 66
 67struct sve_context {
 68	struct arm64_reg_context sve_ctx;
 69	__uint16_t	sve_vector_len;
 70	__uint16_t	sve_flags;
 71	__uint16_t	sve_reserved[2];
 72};
 73
 74struct __mcontext {
 75	struct gpregs	mc_gpregs;
 76	struct fpregs	mc_fpregs;
 77	int		mc_flags;
 78#define	_MC_FP_VALID	0x1		/* Set when mc_fpregs has valid data */
 79	int		mc_pad;		/* Padding */
 80	__uint64_t	mc_ptr;		/* Address of extra_regs struct */
 81	__uint64_t	mc_spare[7];	/* Space for expansion, set to zero */
 82};
 83
 84
 85typedef struct __mcontext mcontext_t;
 86
 87#ifdef COMPAT_FREEBSD32
 88#include <compat/freebsd32/freebsd32_signal.h>
 89typedef struct __mcontext32 {
 90	uint32_t		mc_gregset[17];
 91	uint32_t		mc_vfp_size;
 92	uint32_t		mc_vfp_ptr;
 93	uint32_t		mc_spare[33];
 94} mcontext32_t;
 95
 96typedef struct __ucontext32 {
 97	sigset_t		uc_sigmask;
 98	mcontext32_t		uc_mcontext;
 99	u_int32_t		uc_link;
100	struct sigaltstack32	uc_stack;
101	u_int32_t		uc_flags;
102	u_int32_t		__spare__[4];
103} ucontext32_t;
104
105typedef struct __mcontext32_vfp {
106	__uint64_t	mcv_reg[32];
107	__uint32_t	mcv_fpscr;
108} mcontext32_vfp_t;
109
110#endif /* COMPAT_FREEBSD32 */
111
112#endif	/* !_MACHINE_UCONTEXT_H_ */
113
114#endif /* !__arm__ */