split __longjmp14() into a separate file and make it use setcontext()
instead of __sigreturn14(). translated from MIPS.
This commit is contained in:
chs
parent
61b506f0a2
commit
1e1499c776
124
lib/libc/arch/hppa/gen/__longjmp14.c
Normal file
124
lib/libc/arch/hppa/gen/__longjmp14.c
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/* $NetBSD: __longjmp14.c,v 1.1 2004/07/18 22:38:33 chs Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christian Limpach.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "namespace.h"
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#include <sys/types.h>
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#include <ucontext.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#define __LIBC12_SOURCE__
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#include <setjmp.h>
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#include <stdio.h>
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#include <unistd.h>
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ssize_t _sys_write(int, void *, size_t);
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void
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__longjmp14(jmp_buf env, int val)
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{
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ucontext_t uc;
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struct sigcontext *sc = (void *)env;
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register_t *regs = (void *)(sc + 1);
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register register_t dp __asm__("r27");
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/* Ensure non-zero SP */
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if (sc->sc_sp == 0)
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goto err;
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/* Make return value non-zero */
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if (val == 0)
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val = 1;
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/* Copy callee-saved regs */
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regs -= 3;
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uc.uc_mcontext.__gregs[3] = regs[3];
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uc.uc_mcontext.__gregs[4] = regs[4];
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uc.uc_mcontext.__gregs[5] = regs[5];
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uc.uc_mcontext.__gregs[6] = regs[6];
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uc.uc_mcontext.__gregs[7] = regs[7];
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uc.uc_mcontext.__gregs[8] = regs[8];
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uc.uc_mcontext.__gregs[9] = regs[9];
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uc.uc_mcontext.__gregs[10] = regs[10];
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uc.uc_mcontext.__gregs[11] = regs[11];
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uc.uc_mcontext.__gregs[12] = regs[12];
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uc.uc_mcontext.__gregs[13] = regs[13];
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uc.uc_mcontext.__gregs[14] = regs[14];
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uc.uc_mcontext.__gregs[15] = regs[15];
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uc.uc_mcontext.__gregs[16] = regs[16];
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uc.uc_mcontext.__gregs[17] = regs[17];
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uc.uc_mcontext.__gregs[18] = regs[18];
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/* Preserve the current value of DP */
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uc.uc_mcontext.__gregs[27] = dp;
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/* Set the desired return value. */
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uc.uc_mcontext.__gregs[_REG_RET0] = val;
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/*
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* Set _UC_{SET,CLR}STACK according to SS_ONSTACK.
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*
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* Restore the signal mask with sigprocmask() instead of _UC_SIGMASK,
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* since libpthread may want to interpose on signal handling.
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*/
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uc.uc_flags = _UC_CPU | (sc->sc_onstack ? _UC_SETSTACK : _UC_CLRSTACK);
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sigprocmask(SIG_SETMASK, &sc->sc_mask, NULL);
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/* Clear uc_link */
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uc.uc_link = 0;
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/* Copy signal mask */
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uc.uc_sigmask = sc->sc_mask;
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/* Copy special regs */
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uc.uc_mcontext.__gregs[_REG_PSW] = sc->sc_ps;
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uc.uc_mcontext.__gregs[_REG_SP] = sc->sc_sp;
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uc.uc_mcontext.__gregs[_REG_PCSQH] = sc->sc_pcsqh;
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uc.uc_mcontext.__gregs[_REG_PCOQH] = sc->sc_pcoqh;
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uc.uc_mcontext.__gregs[_REG_PCSQT] = sc->sc_pcsqt;
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uc.uc_mcontext.__gregs[_REG_PCOQT] = sc->sc_pcoqt;
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setcontext(&uc);
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err:
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longjmperror();
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abort();
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/* NOTREACHED */
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: __setjmp14.S,v 1.3 2003/10/06 05:30:21 matt Exp $ */
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/* $NetBSD: __setjmp14.S,v 1.4 2004/07/18 22:38:33 chs Exp $ */
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/*-
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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@ -44,7 +44,7 @@
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#include <machine/psl.h>
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#include <machine/psl.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if defined(LIBC_SCCS) && !defined(lint)
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RCSID("$NetBSD: __setjmp14.S,v 1.3 2003/10/06 05:30:21 matt Exp $")
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RCSID("$NetBSD: __setjmp14.S,v 1.4 2004/07/18 22:38:33 chs Exp $")
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#endif /* LIBC_SCCS and not lint */
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#endif /* LIBC_SCCS and not lint */
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/*
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/*
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@ -135,41 +135,4 @@ ENTRY(__setjmp14,0)
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copy %r0, %ret0
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copy %r0, %ret0
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EXIT(__setjmp14)
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EXIT(__setjmp14)
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ENTRY(__longjmp14,0)
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/* Finish our stack frame. */
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stw %rp, HPPA_FRAME_CRP(%sp)
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stw %arg0, HPPA_FRAME_ARG(0)(%sp)
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ldw 8(%arg0), %r1 ; ensure non-zero SP
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combt,=,n %r0, %r1, botch ; oops!
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add,<> %r0, %arg1, %ret0 ; ensure return value non-zero
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ldi 1, %ret0
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/* restore callee-saved registers */
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ldo 56(%arg0), %r1
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ldwm 4(%r1), %r3
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ldwm 4(%r1), %r4
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ldwm 4(%r1), %r5
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ldwm 4(%r1), %r6
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ldwm 4(%r1), %r7
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ldwm 4(%r1), %r8
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ldwm 4(%r1), %r9
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ldwm 4(%r1), %r10
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ldwm 4(%r1), %r11
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ldwm 4(%r1), %r12
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ldwm 4(%r1), %r13
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ldwm 4(%r1), %r14
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ldwm 4(%r1), %r15
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ldwm 4(%r1), %r16
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ldwm 4(%r1), %r17
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ldwm 4(%r1), %r18
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/* let sigreturn finish for us */
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bl __sigreturn14, %rp
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nop
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botch:
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bl longjmperror, %rp
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nop
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EXIT(__longjmp14)
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.end
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.end
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