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114 lines
3.9 KiB
C
114 lines
3.9 KiB
C
/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _SYS_UCONTEXT_H
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#define _SYS_UCONTEXT_H 1
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#include <features.h>
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#include <bits/types.h>
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#include <bits/sigset.h>
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/* Alternate, preferred interface. */
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typedef struct sigaltstack
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{
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void *ss_sp;
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size_t ss_size;
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int ss_flags;
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int __pad[4];
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} stack_t;
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/* Forward declaration of AIX type. */
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typedef struct label_t label_t;
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typedef unsigned int kvmhandle_t;
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typedef struct
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{
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unsigned long int __alloc;
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kvmhandle_t __srval[16];
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} adspace_t;
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#define _NGPRS 32
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#define _NFPRS 32
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struct __mstsafe
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{
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struct __mstsave *__prev; /* Previous save area. */
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label_t *__kjmpbuf; /* Pointer to saved context. */
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char *__stackfix; /* Stack fix pointer. */
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char __intpri; /* Interrupt priority. */
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char __backt; /* Back-track flag. */
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char __rsvd[2]; /* Reserved. */
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__pid_t __curid; /* Copy of curid. */
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int __excp_type; /* Exception type for debugger. */
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unsigned long int __iar; /* Instruction address register. */
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unsigned long int __msr; /* Machine state register. */
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unsigned long int __cr; /* Condition register. */
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unsigned long int __lr; /* Link register. */
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unsigned long int __ctr; /* Count register. */
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unsigned long int __xer; /* Fixed point exception. */
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unsigned long int __mq; /* Multiply/quotient register. */
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unsigned long int __tid; /* TID register. */
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unsigned long int __fpscr; /* Floating point status reg. */
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char __fpeu; /* Floating point ever used. */
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char __fpinfo; /* Floating point status flags. */
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char __pad[2]; /* Pad to dword boundary. */
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/* 1 implies state is in mstext */
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unsigned long int __except[5]; /* exception structure. */
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char __pad1[4]; /* Old bus field. */
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unsigned long int __o_iar; /* Old iar (for longjmp excpt). */
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unsigned long int __o_toc; /* Old toc (for longjmp excpt). */
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unsigned long int __o_arg1; /* Old arg1 (for longjmp excpt). */
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unsigned long int __excbranch; /* If not NULL, address to branch
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to on exception. Used by
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assembler routines for low
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cost exception handling. */
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unsigned long int __fpscrx; /* Software extension to fpscr. */
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unsigned long int __o_vaddr; /* Saved vaddr for vmexception. */
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unsigned long int __cachealign[7]; /* Reserved. */
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adspace_t __as; /* Segment registers. */
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unsigned long int __gpr[_NGPRS]; /* General purpose registers. */
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double __fpr[_NFPRS]; /* Floating point registers. */
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};
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typedef struct mcontext_t
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{
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struct __mstsafe __jmp_context;
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} mcontext_t;
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typedef struct ucontext_t
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{
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int __sc_onstack; /* Sigstack state to restore. */
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__sigset_t uc_sigmask; /* The set of signals that are blocked when
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this context is active. */
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int __sc_uerror; /* u_error to restore. */
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mcontext_t uc_mcontext; /* Machine-specific image of saved context. */
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struct ucontext_t *uc_link; /* context resumed after this one returns */
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stack_t uc_stack; /* stack used by context */
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int __pad[4];
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} ucontext_t;
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#endif /* sys/ucontext.h */
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