Add ucontext glue for x86_64.
This commit is contained in:
fvdl
parent
aa0d12cace
commit
894bd3ad9d
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@ -1,4 +1,4 @@
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# $NetBSD: Makefile.inc,v 1.2 2002/02/19 13:08:35 simonb Exp $
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# $NetBSD: Makefile.inc,v 1.3 2003/01/30 02:07:30 fvdl Exp $
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# objects built from assembler sources (need lint stubs)
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SRCS+= alloca.S bswap64.S byte_swap_2.S byte_swap_4.S fabs.S modf.S \
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@ -9,8 +9,10 @@ SRCS+= __setjmp14.S
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SRCS+= _setjmp.S
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SRCS+= __sigsetjmp14.S
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SRCS+= resumecontext.S swapcontext.S
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# objects built from C sources
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SRCS+= ldexp.c
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SRCS+= ldexp.c _lwp.c makecontext.c
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# Common ieee754 constants and functions
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SRCS+= ieee754_infinity.c ieee754_nanf.c
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@ -0,0 +1,70 @@
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/* $NetBSD: _lwp.c,v 1.1 2003/01/30 02:07:30 fvdl Exp $ */
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/*-
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* Copyright (c) 2001 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 Nathan J. Williams.
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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 <sys/types.h>
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#include <inttypes.h>
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#include <ucontext.h>
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#include <lwp.h>
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#include <stdlib.h>
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void
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_lwp_makecontext(ucontext_t *u, void (*start)(void *),
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void *arg, void *private, caddr_t stack_base, size_t stack_size)
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{
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void **sp;
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getcontext(u);
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u->uc_link = NULL;
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u->uc_stack.ss_sp = stack_base;
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u->uc_stack.ss_size = stack_size;
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/* LINTED uintptr_t is safe */
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u->uc_mcontext.__gregs[_REG_RIP] = (uintptr_t)start;
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sp = (void **) (((uintptr_t)(stack_base + stack_size) & ~15) - 8);
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/* LINTED __greg_t is safe */
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u->uc_mcontext.__gregs[_REG_RDI] = (__greg_t)arg;
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*--sp = (void *) _lwp_exit;
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/* LINTED uintptr_t is safe */
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u->uc_mcontext.__gregs[_REG_URSP] = (uintptr_t) sp;
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/* LINTED private is currently unused */
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}
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@ -0,0 +1,104 @@
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/* $NetBSD: makecontext.c,v 1.1 2003/01/30 02:07:31 fvdl Exp $ */
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/*-
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* Copyright (c) 1999 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 Klaus Klein.
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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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* Modified from the i386 version for x86_64 by fvdl@wasabisystems.com.
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*
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: makecontext.c,v 1.1 2003/01/30 02:07:31 fvdl Exp $");
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#endif
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#include <inttypes.h>
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#include <stddef.h>
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#include <ucontext.h>
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#include "extern.h"
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#include <stdarg.h>
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void
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makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
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{
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__greg_t *gr = ucp->uc_mcontext.__gregs;
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uintptr_t *sp;
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va_list ap;
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int stackargs, i;
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stackargs = argc - 6;
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/* LINTED __greg_t is safe */
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gr[_REG_RIP] = (__greg_t)func;
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/* LINTED uintptr_t is safe */
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sp = (uintptr_t *)
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((uintptr_t)ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size);
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/* LINTED uintptr_t is safe */
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sp = (uintptr_t *)(((uintptr_t)sp & ~15) - 8);
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sp--;
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if (stackargs > 0)
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sp -= stackargs;
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/* LINTED __greg_t is safe */
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gr[_REG_URSP] = (__greg_t)sp;
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gr[_REG_RBP] = (__greg_t)0; /* Wipe out frame pointer. */
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/* Put return address on top of stack. */
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/* LINTED uintptr_t is safe */
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*sp++ = (uintptr_t)_resumecontext;
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/*
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* Construct argument list.
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* The registers used to pass the first 6 arguments
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* (rdi, rsi, rdx, rcx, r8, r9) are the first 6 in gregs,
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* in that order, so those arguments can just be copied to
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* the gregs array.
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*/
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va_start(ap, argc);
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for (i = 0; i < 6 && argc > 0; i++) {
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argc--;
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/* LINTED __greg_t is safe */
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gr[i] = va_arg(ap, __greg_t);
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}
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while (stackargs-- > 0) {
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/* LINTED uintptr_t is safe */
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*sp++ = va_arg(ap, uintptr_t);
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}
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va_end(ap);
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}
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@ -0,0 +1,68 @@
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/* $NetBSD: resumecontext.S,v 1.1 2003/01/30 02:07:31 fvdl Exp $ */
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/*-
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* Copyright (c) 1999 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 Klaus Klein.
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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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* Modified for x86-64 by fvdl@wasabisystems.com
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*/
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#include <machine/asm.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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RCSID("$NetBSD: resumecontext.S,v 1.1 2003/01/30 02:07:31 fvdl Exp $")
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#endif /* LIBC_SCCS && !lint */
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/*
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* This assembly-language implementation differs from the (obvious)
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* C-language implementation only in not clobbering the previous
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* function's return address (us), which is the point of the exercise.
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*/
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NENTRY(_resumecontext) /* profiling prologue would clobber TOS */
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leaq -(8 + 784)(%rsp),%rdi /* retaddr + sizeof (ucontext_t) */
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andq $~15,%rdi /* align on _UC_UCONTEXT_ALIGN */
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movq %rdi,%rsp
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#ifdef PIC
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call PIC_PLT(_C_LABEL(_getcontext))
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#else
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call _C_LABEL(_getcontext)
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#endif
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movq 4(%rsp),%rdi
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#ifdef PIC
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call PIC_PLT(_C_LABEL(setcontext))
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#else
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call _C_LABEL(setcontext)
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#endif
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/* NOTREACHED */
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@ -0,0 +1,75 @@
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/* $NetBSD: swapcontext.S,v 1.1 2003/01/30 02:07:31 fvdl Exp $ */
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/*
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* Copyright (c) 2003 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Frank van der Linden for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* 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 WASABI SYSTEMS, INC
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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 <machine/asm.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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RCSID("$NetBSD: swapcontext.S,v 1.1 2003/01/30 02:07:31 fvdl Exp $")
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#endif /* LIBC_SCCS && !lint */
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/*
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* 56 == offsetof(ucontext_t, uc_mcontext)
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* 21 == _REG_RIP
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* 24 == _REG_URSP
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*/
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ENTRY(swapcontext)
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pushq %r12
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pushq %r13
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movq %rdi,%r12 /* preserve oucp */
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movq %rsi,%r13 /* preserve ucp */
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#ifdef PIC
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call PIC_PLT(_C_LABEL(getcontext))
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#else
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call _C_LABEL(getcontext)
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#endif
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testl %eax,%eax
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jnz 2f
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movq (%rsp),%r11
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movq %r11,(56 + 21 * 8)(%r12)
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leaq 8(%rsp),%r11
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movq %r11,(56 + 24 * 8)(%r12)
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movq %r13,%rdi
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#ifdef PIC
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call PIC_PLT(_C_LABEL(setcontext))
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#else
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call _C_LABEL(setcontext)
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#endif
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2:
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popq %r13
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popq %r12
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ret
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@ -1,4 +1,4 @@
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/* $NetBSD: __sigaction14_sigtramp.c,v 1.1 2002/07/09 23:32:39 thorpej Exp $ */
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/* $NetBSD: __sigaction14_sigtramp.c,v 1.2 2003/01/30 02:07:32 fvdl Exp $ */
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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@ -43,8 +43,10 @@
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#include "extern.h"
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__weak_alias(__sigaction14, __libc_sigaction14)
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int
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__sigaction14(int sig, const struct sigaction *act, struct sigaction *oact)
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__libc_sigaction14(int sig, const struct sigaction *act, struct sigaction *oact)
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{
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extern int __sigtramp_sigcontext_1[];
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@ -0,0 +1,63 @@
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/* $NetBSD: getcontext.S,v 1.1 2003/01/30 02:07:32 fvdl Exp $ */
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/*
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* Copyright (c) 2003 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Frank van der Linden for Wasabi Systems, Inc.
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*
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* 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.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed for the NetBSD Project by
|
||||
* Wasabi Systems, Inc.
|
||||
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
||||
* or promote products derived from this software without specific prior
|
||||
* written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
|
||||
* 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
|
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* POSSIBILITY OF SUCH DAMAGE.
|
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*/
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#include "SYS.h"
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#if defined(SYSLIBC_SCCS) && !defined(lint)
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RCSID("$NetBSD: getcontext.S,v 1.1 2003/01/30 02:07:32 fvdl Exp $")
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#endif
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#ifdef WEAK_ALIAS
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WEAK_ALIAS(getcontext, _getcontext)
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#endif
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/*
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* 56 == offsetof(ucontext_t, uc_mcontext)
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* 14 == _REG_RAX
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* 21 == _REG_RIP
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* 24 == _REG_URSP
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*/
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_SYSCALL(_getcontext,getcontext)
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movq (%rsp),%r11
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movq %r11,(56 + 21 * 8)(%rdi)
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leaq 8(%rsp),%r11
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movq %r11,(56 + 24 * 8)(%rdi)
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movq $0,(56 + 14 * 8)(%rdi)
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xorl %eax,%eax
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ret
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