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/* $NetBSD: __longjmp14.c,v 1.7 2013/03/13 08:05:46 martin Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christian Limpach and Matt Thomas.
*
* 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.
*/
#include "namespace.h"
#include <sys/types.h>
#include <ucontext.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <machine/reg.h>
#include <machine/alpha_cpu.h>
#define __LIBC12_SOURCE__
#include <setjmp.h>
#include <compat/include/setjmp.h>
void
__longjmp14(jmp_buf env, int val)
{
struct sigcontext *sc = (void *)env;
ucontext_t uc;
/* Ensure non-zero SP */
if (sc->sc_sp == 0 || sc->sc_regs[R_ZERO] != 0xacedbade)
goto err;
/* Ensure non-zero return value */
if (val == 0)
val = -1;
/* Set _UC_SIGMASK and _UC_CPU */
uc.uc_flags = _UC_SIGMASK | _UC_CPU;
/* Clear uc_link */
uc.uc_link = 0;
/* Save return value in context */
uc.uc_mcontext.__gregs[_REG_V0] = val;
/* Copy saved registers */
uc.uc_mcontext.__gregs[_REG_S0] = sc->sc_regs[R_S0];
uc.uc_mcontext.__gregs[_REG_S1] = sc->sc_regs[R_S1];
uc.uc_mcontext.__gregs[_REG_S2] = sc->sc_regs[R_S2];
uc.uc_mcontext.__gregs[_REG_S3] = sc->sc_regs[R_S3];
uc.uc_mcontext.__gregs[_REG_S4] = sc->sc_regs[R_S4];
uc.uc_mcontext.__gregs[_REG_S5] = sc->sc_regs[R_S5];
uc.uc_mcontext.__gregs[_REG_S6] = sc->sc_regs[R_S6];
uc.uc_mcontext.__gregs[_REG_RA] = sc->sc_regs[R_RA];
uc.uc_mcontext.__gregs[_REG_GP] = sc->sc_regs[R_GP];
uc.uc_mcontext.__gregs[_REG_SP] = sc->sc_sp;
uc.uc_mcontext.__gregs[_REG_PC] = sc->sc_pc;
uc.uc_mcontext.__gregs[_REG_PS] =
(sc->sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR;
/* Copy FP state */
if (sc->sc_ownedfp) {
memcpy(&uc.uc_mcontext.__fpregs.__fp_fr,
&sc->sc_fpregs, 31 * sizeof(unsigned long));
uc.uc_mcontext.__fpregs.__fp_fpcr = sc->sc_fpcr;
/* XXX sc_fp_control */
uc.uc_flags |= _UC_FPU;
}
/* Copy signal mask */
uc.uc_sigmask = sc->sc_mask;
setcontext(&uc);
err:
longjmperror();
abort();
/* NOTREACHED */
}
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