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43 lines
1.9 KiB
C
43 lines
1.9 KiB
C
/* Copyright (C) 2011-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
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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, see
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<http://www.gnu.org/licenses/>. */
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/* Definitions of offsets within the ucontext_t structure. Note
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that for convenience we use __SIZEOF_POINTER__ for "long" and
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"ssize_t" fields (and their unsigned counterparts) as well. */
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#define UC_FLAGS_OFFSET 0
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#define UC_LINK_OFFSET (UC_FLAGS_OFFSET + __SIZEOF_POINTER__)
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#define UC_STACK_SP_OFFSET (UC_LINK_OFFSET + __SIZEOF_POINTER__)
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#define UC_STACK_FLAGS_OFFSET (UC_STACK_SP_OFFSET + __SIZEOF_POINTER__)
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#define UC_STACK_SIZE_OFFSET (UC_STACK_FLAGS_OFFSET + __SIZEOF_POINTER__)
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#define UC_STACK_MCONTEXT_OFFSET \
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((UC_STACK_SIZE_OFFSET + __SIZEOF_POINTER__ + REGSIZE - 1) & -REGSIZE)
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#define UC_REG(i) (UC_STACK_MCONTEXT_OFFSET + ((i) * REGSIZE))
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#define UC_NREGS 64
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#define UC_SIGMASK_OFFSET UC_REG(UC_NREGS)
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#define UC_SIZE (UC_SIGMASK_OFFSET + (_NSIG / 8))
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/* From <asm/siginfo.h> */
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#define SI_MAX_SIZE 128
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/* From <asm/signal.h> */
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#define _NSIG 64
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#define SIG_BLOCK 0 /* for blocking signals */
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#define SIG_UNBLOCK 1 /* for unblocking signals */
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#define SIG_SETMASK 2 /* for setting the signal mask */
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