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/* Copyright (C) 1999, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Philip Blundell <philb@gnu.org>, 1999.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <sys/ucontext.h>
#include "kernel-features.h"
#define SIGCONTEXT siginfo_t *_si, struct ucontext *
#define SIGCONTEXT_EXTRA_ARGS _si,
/* The sigcontext structure changed between 2.0 and 2.1 kernels. On any
modern system we should be able to assume that the "new" format will be
in use. */
#define GET_PC(ctx) ((void *) (ctx)->uc_mcontext.arm_pc)
#define GET_FRAME(ctx) ADVANCE_STACK_FRAME ((void *) ctx->uc_mcontext.arm_fp)
#define GET_STACK(ctx) ((void *) (ctx)->uc_mcontext.arm_sp)
#define ADVANCE_STACK_FRAME(frm) \
((struct layout *)frm - 1)
#define CALL_SIGHANDLER(handler, signo, ctx) \
(handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
/* There is no reliable way to get the sigcontext unless we use a
three-argument signal handler. */
#define __sigaction(sig, act, oact) ({ \
(act)->sa_flags |= SA_SIGINFO; \
(__sigaction) (sig, act, oact); \
})
#define sigaction(sig, act, oact) ({ \
(act)->sa_flags |= SA_SIGINFO; \
(sigaction) (sig, act, oact); \
})
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