138 lines
4.4 KiB
C
138 lines
4.4 KiB
C
/* $NetBSD: ucontext.h,v 1.17 2012/09/12 02:00:54 manu Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1999, 2003 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Klaus Klein, and by Jason R. Thorpe.
|
|
*
|
|
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
#ifndef _SYS_UCONTEXT_H_
|
|
#define _SYS_UCONTEXT_H_
|
|
|
|
#include <sys/sigtypes.h>
|
|
#include <machine/mcontext.h>
|
|
|
|
typedef struct __ucontext ucontext_t;
|
|
|
|
struct __ucontext {
|
|
unsigned int uc_flags; /* properties */
|
|
ucontext_t * uc_link; /* context to resume */
|
|
sigset_t uc_sigmask; /* signals blocked in this context */
|
|
stack_t uc_stack; /* the stack used by this context */
|
|
mcontext_t uc_mcontext; /* machine state */
|
|
#if defined(_UC_MACHINE_PAD)
|
|
long __uc_pad[_UC_MACHINE_PAD];
|
|
#endif
|
|
};
|
|
|
|
#ifndef _UC_UCONTEXT_ALIGN
|
|
#define _UC_UCONTEXT_ALIGN (~0)
|
|
#endif
|
|
|
|
/* uc_flags */
|
|
#define _UC_SIGMASK 0x01 /* valid uc_sigmask */
|
|
#define _UC_STACK 0x02 /* valid uc_stack */
|
|
#define _UC_CPU 0x04 /* valid GPR context in uc_mcontext */
|
|
#define _UC_FPU 0x08 /* valid FPU context in uc_mcontext */
|
|
#ifdef __minix
|
|
#define _UC_SWAPPED 0x10000
|
|
#define _UC_IGNFPU 0x20000
|
|
#define _UC_IGNSIGM 0x40000
|
|
#endif
|
|
#define _UC_MD 0x400f0020 /* MD bits. see below */
|
|
|
|
/*
|
|
* if your port needs more MD bits, please try to choose bits from _UC_MD
|
|
* first, rather than picking random unused bits.
|
|
*
|
|
* _UC_MD details
|
|
*
|
|
* _UC_TLSBASE Context contains valid pthread private pointer
|
|
* All ports must define this MD flag
|
|
* 0x00040000 hppa, mips
|
|
* 0x00000020 alpha
|
|
* 0x00080000 all other ports
|
|
*
|
|
* _UC_SETSTACK Context uses signal stack
|
|
* 0x00020000 arm
|
|
* [undefined] alpha, powerpc and vax
|
|
* 0x00010000 other ports
|
|
*
|
|
* _UC_CLRSTACK Context does not use signal stack
|
|
* 0x00040000 arm
|
|
* [undefined] alpha, powerpc and vax
|
|
* 0x00020000 other ports
|
|
*
|
|
* _UC_POWERPC_VEC Context does not use signal stack
|
|
* 0x00010000 powerpc only
|
|
*
|
|
* _UC_POWERPC_SPE Context contains valid SPE context
|
|
* 0x00020000 powerpc only
|
|
*
|
|
* _UC_M68K_UC_USER Used by m68k machdep code, but undocumented
|
|
* 0x40000000 m68k only
|
|
*
|
|
* _UC_ARM_VFP Unused
|
|
* 0x00010000 arm only
|
|
*
|
|
* _UC_VM Context contains valid virtual 8086 context
|
|
* 0x00040000 i386, amd64 only
|
|
*
|
|
* _UC_FXSAVE Context contains FPU context in that
|
|
* is in FXSAVE format in XMM space
|
|
* 0x00000020 i386, amd64 only
|
|
*/
|
|
|
|
#ifdef _KERNEL
|
|
struct lwp;
|
|
|
|
#ifdef __UCONTEXT_SIZE
|
|
__CTASSERT(sizeof(ucontext_t) == __UCONTEXT_SIZE);
|
|
#endif
|
|
|
|
void getucontext(struct lwp *, ucontext_t *);
|
|
int setucontext(struct lwp *, const ucontext_t *);
|
|
void cpu_getmcontext(struct lwp *, mcontext_t *, unsigned int *);
|
|
int cpu_setmcontext(struct lwp *, const mcontext_t *, unsigned int);
|
|
int cpu_mcontext_validate(struct lwp *, const mcontext_t *);
|
|
#endif /* _KERNEL */
|
|
|
|
#ifdef __minix
|
|
__BEGIN_DECLS
|
|
void resumecontext(ucontext_t *ucp);
|
|
#ifdef __UCONTEXT_SIZE
|
|
__CTASSERT(sizeof(ucontext_t) == __UCONTEXT_SIZE);
|
|
#endif
|
|
|
|
/* These functions get and set ucontext structure through PM/kernel. They don't
|
|
* manipulate the stack. */
|
|
int getuctx(ucontext_t *ucp);
|
|
int setuctx(const ucontext_t *ucp);
|
|
__END_DECLS
|
|
#endif /* __minix */
|
|
|
|
#endif /* !_SYS_UCONTEXT_H_ */
|