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[src/trunk]: src/sys/arch/alpha osf1_locore.s -> osf1_sigcode.s, to match the...
details: https://anonhg.NetBSD.org/src/rev/26724eb233ab
branches: trunk
changeset: 500606:26724eb233ab
user: mycroft <mycroft%NetBSD.org@localhost>
date: Thu Dec 14 18:06:13 2000 +0000
description:
osf1_locore.s -> osf1_sigcode.s, to match the global convention.
Add linux_syscall.c.
diffstat:
sys/arch/alpha/alpha/linux_syscall.c | 353 +++++++++++++++++++++++++++++++++++
sys/arch/alpha/alpha/osf1_locore.s | 87 --------
sys/arch/alpha/alpha/osf1_sigcode.s | 87 ++++++++
sys/arch/alpha/conf/files.alpha | 5 +-
4 files changed, 443 insertions(+), 89 deletions(-)
diffs (truncated from 564 to 300 lines):
diff -r 0dc8cf5f0c51 -r 26724eb233ab sys/arch/alpha/alpha/linux_syscall.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/alpha/alpha/linux_syscall.c Thu Dec 14 18:06:13 2000 +0000
@@ -0,0 +1,353 @@
+/* $NetBSD: linux_syscall.c,v 1.1 2000/12/14 18:06:13 mycroft Exp $ */
+
+/*-
+ * Copyright (c) 2000 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center, and by Charles M. Hannum.
+ *
+ * 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 by the NetBSD
+ * Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * 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.
+ */
+
+/*
+ * Copyright (c) 1999 Christopher G. Demetriou. All rights reserved.
+ *
+ * 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 by Christopher G. Demetriou
+ * for the NetBSD Project.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+/*
+ * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
+ * All rights reserved.
+ *
+ * Author: Chris G. Demetriou
+ *
+ * Permission to use, copy, modify and distribute this software and
+ * its documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ * Software Distribution Coordinator or Software.Distribution%CS.CMU.EDU@localhost
+ * School of Computer Science
+ * Carnegie Mellon University
+ * Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.
+ */
+
+#include "opt_syscall_debug.h"
+#include "opt_ktrace.h"
+
+#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
+
+__KERNEL_RCSID(0, "$NetBSD: linux_syscall.c,v 1.1 2000/12/14 18:06:13 mycroft Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/signal.h>
+#ifdef KTRACE
+#include <sys/ktrace.h>
+#endif
+#include <sys/syscall.h>
+
+#include <uvm/uvm_extern.h>
+
+#include <machine/cpu.h>
+#include <machine/reg.h>
+#include <machine/alpha.h>
+
+#include <compat/linux/arch/alpha/linux_errno.h>
+#include <compat/linux/linux_syscall.h>
+#include <compat/linux/arch/alpha/linux_signal.h>
+#include <compat/linux/arch/alpha/linux_machdep.h>
+
+void userret __P((struct proc *));
+void linux_syscall_intern __P((struct proc *));
+void linux_syscall_plain __P((struct proc *, u_int64_t, struct trapframe *));
+void linux_syscall_fancy __P((struct proc *, u_int64_t, struct trapframe *));
+
+void
+linux_syscall_intern(p)
+ struct proc *p;
+{
+
+#ifdef KTRACE
+ if (p->p_traceflag & (KTRFAC_SYSCALL | KTRFAC_SYSRET))
+ p->p_md.md_syscall = linux_syscall_fancy;
+ else
+#endif
+ p->p_md.md_syscall = linux_syscall_plain;
+}
+
+/*
+ * Process a system call.
+ *
+ * System calls are strange beasts. They are passed the syscall number
+ * in v0, and the arguments in the registers (as normal). They return
+ * an error flag in a3 (if a3 != 0 on return, the syscall had an error),
+ * and the return value (if any) in v0.
+ *
+ * The assembly stub takes care of moving the call number into a register
+ * we can get to, and moves all of the argument registers into their places
+ * in the trap frame. On return, it restores the callee-saved registers,
+ * a3, and v0 from the frame before returning to the user process.
+ */
+void
+linux_syscall_plain(p, code, framep)
+ struct proc *p;
+ u_int64_t code;
+ struct trapframe *framep;
+{
+ const struct sysent *callp;
+ int error;
+ u_int64_t rval[2];
+ u_int64_t *args, copyargs[10]; /* XXX */
+ u_int hidden, nargs;
+
+ KERNEL_PROC_LOCK(p);
+
+ uvmexp.syscalls++;
+ p->p_md.md_tf = framep;
+
+ callp = p->p_emul->e_sysent;
+
+ switch (code) {
+ case LINUX_SYS_syscall:
+ /* OSF/1 syscall() */
+ code = framep->tf_regs[FRAME_A0];
+ hidden = 1;
+ break;
+ default:
+ hidden = 0;
+ break;
+ }
+
+ code &= (LINUX_SYS_NSYSENT - 1);
+ callp += code;
+
+ nargs = callp->sy_narg + hidden;
+ switch (nargs) {
+ default:
+ error = copyin((caddr_t)alpha_pal_rdusp(), ©args[6],
+ (nargs - 6) * sizeof(u_int64_t));
+ if (error)
+ goto bad;
+ case 6:
+ copyargs[5] = framep->tf_regs[FRAME_A5];
+ case 5:
+ copyargs[4] = framep->tf_regs[FRAME_A4];
+ case 4:
+ copyargs[3] = framep->tf_regs[FRAME_A3];
+ copyargs[2] = framep->tf_regs[FRAME_A2];
+ copyargs[1] = framep->tf_regs[FRAME_A1];
+ copyargs[0] = framep->tf_regs[FRAME_A0];
+ args = copyargs;
+ break;
+ case 3:
+ case 2:
+ case 1:
+ case 0:
+ args = &framep->tf_regs[FRAME_A0];
+ break;
+ }
+ args += hidden;
+
+#ifdef SYSCALL_DEBUG
+ scdebug_call(p, code, args);
+#endif
+
+ rval[0] = 0;
+ rval[1] = 0;
+ error = (*callp->sy_call)(p, args, rval);
+
+ switch (error) {
+ case 0:
+ framep->tf_regs[FRAME_V0] = rval[0];
+ framep->tf_regs[FRAME_A4] = rval[1];
+ framep->tf_regs[FRAME_A3] = 0;
+ break;
+ case ERESTART:
+ framep->tf_regs[FRAME_PC] -= 4;
+ break;
+ case EJUSTRETURN:
+ break;
+ default:
+ bad:
+ error = linux_errno_rxlist[error];
+ framep->tf_regs[FRAME_V0] = error;
+ framep->tf_regs[FRAME_A3] = 1;
+ break;
+ }
+
+#ifdef SYSCALL_DEBUG
+ scdebug_ret(p, code, error, rval);
+#endif
+ KERNEL_PROC_UNLOCK(p);
+ userret(p);
+}
+
+void
+linux_syscall_fancy(p, code, framep)
+ struct proc *p;
+ u_int64_t code;
+ struct trapframe *framep;
+{
+ const struct sysent *callp;
+ int error;
+ u_int64_t rval[2];
+ u_int64_t *args, copyargs[10]; /* XXX */
+ u_int hidden, nargs;
+
+ KERNEL_PROC_LOCK(p);
+
+ uvmexp.syscalls++;
+ p->p_md.md_tf = framep;
+
+ callp = p->p_emul->e_sysent;
+
+ switch (code) {
+ case LINUX_SYS_syscall:
+ /* OSF/1 syscall() */
+ code = framep->tf_regs[FRAME_A0];
+ hidden = 1;
+ break;
+ default:
+ hidden = 0;
+ break;
+ }
+
+ code &= (LINUX_SYS_NSYSENT - 1);
+ callp += code;
+
+ nargs = callp->sy_narg + hidden;
+ switch (nargs) {
+ default:
+ error = copyin((caddr_t)alpha_pal_rdusp(), ©args[6],
+ (nargs - 6) * sizeof(u_int64_t));
+ if (error)
+ goto bad;
+ case 6:
+ copyargs[5] = framep->tf_regs[FRAME_A5];
+ case 5:
+ copyargs[4] = framep->tf_regs[FRAME_A4];
+ case 4:
+ copyargs[3] = framep->tf_regs[FRAME_A3];
+ copyargs[2] = framep->tf_regs[FRAME_A2];
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