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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2015 Nexenta Systems, Inc. All rights reserved.
*
* Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Essential struct definitions for mcontext_t needed by ucontext.h
* These were formerly in regset.h, which now includes this file.
*/
#ifndef _SYS_MCONTEXT_H
#define _SYS_MCONTEXT_H
#include <sys/feature_tests.h>
#if !defined(_ASM)
#include <sys/types.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* A gregset_t is defined as an array type for compatibility with the reference
* source. This is important due to differences in the way the C language
* treats arrays and structures as parameters.
*/
#if defined(__amd64)
#define _NGREG 28
#else
#define _NGREG 19
#endif
#if !defined(_ASM)
#if defined(_LP64) || defined(_I32LPx)
typedef long greg_t;
#else
typedef int greg_t;
#endif
#if defined(_SYSCALL32)
typedef int32_t greg32_t;
typedef int64_t greg64_t;
#endif /* _SYSCALL32 */
typedef greg_t gregset_t[_NGREG];
#if defined(_SYSCALL32)
#define _NGREG32 19
#define _NGREG64 28
typedef greg32_t gregset32_t[_NGREG32];
typedef greg64_t gregset64_t[_NGREG64];
#endif /* _SYSCALL32 */
/*
* Floating point definitions.
*/
#if defined(__amd64)
typedef struct _fpu {
union {
struct _fpchip_state {
uint16_t cw;
uint16_t sw;
uint8_t fctw;
uint8_t __fx_rsvd;
uint16_t fop;
uint64_t rip;
uint64_t rdp;
uint32_t mxcsr;
uint32_t mxcsr_mask;
union {
uint16_t fpr_16[5];
upad128_t __fpr_pad;
} st[8];
upad128_t xmm[16];
upad128_t __fx_ign2[6];
uint32_t status; /* sw at exception */
uint32_t xstatus; /* mxcsr at exception */
} fpchip_state;
uint32_t f_fpregs[130];
} fp_reg_set;
} fpregset_t;
#else /* __i386 */
/*
* This definition of the floating point structure is binary
* compatible with the Intel386 psABI definition, and source
* compatible with that specification for x87-style floating point.
* It also allows SSE/SSE2 state to be accessed on machines that
* possess such hardware capabilities.
*/
typedef struct _fpu {
union {
struct _fpchip_state {
uint32_t state[27]; /* 287/387 saved state */
uint32_t status; /* saved at exception */
uint32_t mxcsr; /* SSE control and status */
uint32_t xstatus; /* SSE mxcsr at exception */
uint32_t __pad[2]; /* align to 128-bits */
upad128_t xmm[8]; /* %xmm0-%xmm7 */
} fpchip_state;
struct _fp_emul_space { /* for emulator(s) */
uint8_t fp_emul[246];
uint8_t fp_epad[2];
} fp_emul_space;
uint32_t f_fpregs[95]; /* union of the above */
} fp_reg_set;
} fpregset_t;
#endif /* __i386 */
#if defined(_SYSCALL32)
/* Kernel view of user i386 fpu structure */
typedef struct fpu32 {
union {
struct fpchip32_state {
uint32_t state[27]; /* 287/387 saved state */
uint32_t status; /* saved at exception */
uint32_t mxcsr; /* SSE control and status */
uint32_t xstatus; /* SSE mxcsr at exception */
uint32_t __pad[2]; /* align to 128-bits */
uint32_t xmm[8][4]; /* %xmm0-%xmm7 */
} fpchip_state;
uint32_t f_fpregs[95]; /* union of the above */
} fp_reg_set;
} fpregset32_t;
#endif /* _SYSCALL32 */
/*
* Structure mcontext defines the complete hardware machine state.
* (This structure is specified in the i386 ABI suppl.)
*/
typedef struct {
gregset_t gregs; /* general register set */
fpregset_t fpregs; /* floating point register set */
} mcontext_t;
#if defined(_SYSCALL32)
typedef struct {
gregset32_t gregs; /* general register set */
fpregset32_t fpregs; /* floating point register set */
} mcontext32_t;
#endif /* _SYSCALL32 */
#endif /* _ASM */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MCONTEXT_H */
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