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NetBSD/sys/compat/hpux/hpux_exec_aout.c

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/* $NetBSD: hpux_exec_aout.c,v 1.1 2000/12/01 19:15:12 jdolecek Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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) 1993, 1994 Christopher G. Demetriou
*
* 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
* This product includes software developed by Christopher G. Demetriou.
* 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.
*/
/*
* Glue for exec'ing HP-UX executables and the HP-UX execv() system call.
* Based on sys/kern/exec_aout.c
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/exec.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/user.h>
#include <sys/vnode.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <machine/cpu.h>
#include <machine/reg.h>
#include <sys/syscallargs.h>
#include <compat/hpux/hpux.h>
#include <compat/hpux/hpux_util.h>
#include <compat/hpux/hpux_syscall.h>
#include <compat/hpux/hpux_syscallargs.h>
#include <machine/hpux_machdep.h>
static int exec_hpux_prep_nmagic __P((struct proc *, struct exec_package *));
static int exec_hpux_prep_zmagic __P((struct proc *, struct exec_package *));
static int exec_hpux_prep_omagic __P((struct proc *, struct exec_package *));
int
exec_hpux_makecmds(p, epp)
struct proc *p;
struct exec_package *epp;
{
struct hpux_exec *hpux_ep = epp->ep_hdr;
short sysid, magic;
int error = ENOEXEC;
magic = HPUX_MAGIC(hpux_ep);
sysid = HPUX_SYSID(hpux_ep);
/*
* XXX This will lose if there's ever an hp700 port.
*/
if (sysid != MID_HPUX)
return (ENOEXEC);
/*
* HP-UX is a 4k page size system, and executables assume
* this.
*/
if (NBPG != HPUX_LDPGSZ)
return (ENOEXEC);
switch (magic) {
case OMAGIC:
error = exec_hpux_prep_omagic(p, epp);
break;
case NMAGIC:
error = exec_hpux_prep_nmagic(p, epp);
break;
case ZMAGIC:
error = exec_hpux_prep_zmagic(p, epp);
break;
}
if (error != 0)
kill_vmcmds(&epp->ep_vmcmds);
return (error);
}
static int
exec_hpux_prep_nmagic(p, epp)
struct proc *p;
struct exec_package *epp;
{
struct hpux_exec *execp = epp->ep_hdr;
long bsize, baddr;
epp->ep_taddr = 0;
epp->ep_tsize = execp->ha_text;
epp->ep_daddr = epp->ep_taddr + roundup(execp->ha_text, HPUX_LDPGSZ);
epp->ep_dsize = execp->ha_data + execp->ha_bss;
epp->ep_entry = execp->ha_entry;
/* set up command for text segment */
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_readvn, execp->ha_text,
epp->ep_taddr, epp->ep_vp, HPUX_TXTOFF(*execp, NMAGIC),
VM_PROT_READ|VM_PROT_EXECUTE);
/* set up command for data segment */
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_readvn, execp->ha_data,
epp->ep_daddr, epp->ep_vp, HPUX_DATAOFF(*execp, NMAGIC),
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
/* set up command for bss segment */
baddr = roundup(epp->ep_daddr + execp->ha_data, NBPG);
bsize = epp->ep_daddr + epp->ep_dsize - baddr;
if (bsize > 0)
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, bsize, baddr,
NULLVP, 0, VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
return (exec_aout_setup_stack(p, epp));
}
static int
exec_hpux_prep_zmagic(p, epp)
struct proc *p;
struct exec_package *epp;
{
struct hpux_exec *execp = epp->ep_hdr;
long bsize, baddr;
long nontext;
/*
* Check if vnode is in open for writing, because we want to
* demand-page out of it. If it is, don't do it, for various
* reasons.
*/
if ((execp->ha_text != 0 || execp->ha_data != 0) &&
epp->ep_vp->v_writecount != 0)
return (ETXTBSY);
vn_marktext(epp->ep_vp);
/*
* HP-UX ZMAGIC executables need to have their segment
* sizes frobbed.
*/
nontext = execp->ha_data + execp->ha_bss;
execp->ha_text = ctob(btoc(execp->ha_text));
execp->ha_data = ctob(btoc(execp->ha_data));
execp->ha_bss = nontext - execp->ha_data;
if (execp->ha_bss < 0)
execp->ha_bss = 0;
epp->ep_taddr = 0;
epp->ep_tsize = execp->ha_text;
epp->ep_daddr = epp->ep_taddr + roundup(execp->ha_text, HPUX_LDPGSZ);
epp->ep_dsize = execp->ha_data + execp->ha_bss;
epp->ep_entry = execp->ha_entry;
/* set up command for text segment */
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_pagedvn, execp->ha_text,
epp->ep_taddr, epp->ep_vp, HPUX_TXTOFF(*execp, ZMAGIC),
VM_PROT_READ|VM_PROT_EXECUTE);
/* set up command for data segment */
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_pagedvn, execp->ha_data,
epp->ep_daddr, epp->ep_vp, HPUX_DATAOFF(*execp, ZMAGIC),
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
/* set up command for bss segment */
baddr = roundup(epp->ep_daddr + execp->ha_data, NBPG);
bsize = epp->ep_daddr + epp->ep_dsize - baddr;
if (bsize > 0)
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, bsize, baddr,
NULLVP, 0, VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
return (exec_aout_setup_stack(p, epp));
}
/*
* HP-UX's version of OMAGIC.
*/
static int
exec_hpux_prep_omagic(p, epp)
struct proc *p;
struct exec_package *epp;
{
struct hpux_exec *execp = epp->ep_hdr;
long dsize, bsize, baddr;
epp->ep_taddr = 0;
epp->ep_tsize = execp->ha_text;
epp->ep_daddr = epp->ep_taddr + roundup(execp->ha_text, HPUX_LDPGSZ);
epp->ep_dsize = execp->ha_data + execp->ha_bss;
epp->ep_entry = execp->ha_entry;
/* set up command for text and data segments */
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_readvn,
execp->ha_text + execp->ha_data, epp->ep_taddr, epp->ep_vp,
HPUX_TXTOFF(*execp, OMAGIC),
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
/* set up command for bss segment */
baddr = roundup(epp->ep_daddr + execp->ha_data, NBPG);
bsize = epp->ep_daddr + epp->ep_dsize - baddr;
if (bsize > 0)
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, bsize, baddr,
NULLVP, 0, VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
/*
* Make sure (# of pages) mapped above equals (vm_tsize + vm_dsize);
* obreak(2) relies on this fact. Both `vm_tsize' and `vm_dsize' are
* computed (in execve(2)) by rounding *up* `ep_tsize' and `ep_dsize'
* respectively to page boundaries.
* Compensate `ep_dsize' for the amount of data covered by the last
* text page.
*/
dsize = epp->ep_dsize + execp->ha_text - roundup(execp->ha_text, NBPG);
epp->ep_dsize = (dsize > 0) ? dsize : 0;
return (exec_aout_setup_stack(p, epp));
}
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