326 lines
9.1 KiB
C
326 lines
9.1 KiB
C
/* $NetBSD: hpux_exec.c,v 1.4 1996/09/03 03:12:19 mycroft Exp $ */
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/*
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* Copyright (c) 1995 Jason R. Thorpe. All rights reserved.
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* Copyright (c) 1993, 1994 Christopher G. Demetriou
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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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* This product includes software developed by Christopher G. Demetriou.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Glue for exec'ing HP-UX executables and the HP-UX execv() system call.
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* Based on sys/kern/exec_aout.c
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/namei.h>
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#include <sys/user.h>
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#include <sys/vnode.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/vm_map.h>
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#include <machine/cpu.h>
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#include <machine/reg.h>
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#include <sys/syscallargs.h>
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#include <compat/hpux/hpux.h>
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#include <compat/hpux/hpux_util.h>
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#include <compat/hpux/hpux_syscall.h>
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#include <compat/hpux/hpux_syscallargs.h>
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#include <machine/hpux_machdep.h>
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const char hpux_emul_path[] = "/emul/hpux";
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extern char sigcode[], esigcode[];
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extern struct sysent hpux_sysent[];
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extern char *hpux_syscallnames[];
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extern int bsdtohpuxerrnomap[];
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static int exec_hpux_prep_nmagic __P((struct proc *, struct exec_package *));
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static int exec_hpux_prep_zmagic __P((struct proc *, struct exec_package *));
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static int exec_hpux_prep_omagic __P((struct proc *, struct exec_package *));
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struct emul emul_hpux = {
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"hpux",
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bsdtohpuxerrnomap,
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sendsig,
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HPUX_SYS_syscall,
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HPUX_SYS_MAXSYSCALL,
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hpux_sysent,
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hpux_syscallnames,
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0,
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copyargs,
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setregs,
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sigcode,
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esigcode,
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};
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int
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exec_hpux_makecmds(p, epp)
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struct proc *p;
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struct exec_package *epp;
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{
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struct hpux_exec *hpux_ep = epp->ep_hdr;
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short sysid, magic;
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int error = ENOEXEC;
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magic = HPUX_MAGIC(hpux_ep);
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sysid = HPUX_SYSID(hpux_ep);
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/*
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* XXX This will lose if there's ever an hp700 port.
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*/
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if (sysid != MID_HPUX)
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return (ENOEXEC);
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switch (magic) {
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case OMAGIC:
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error = exec_hpux_prep_omagic(p, epp);
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break;
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case NMAGIC:
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error = exec_hpux_prep_nmagic(p, epp);
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break;
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case ZMAGIC:
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error = exec_hpux_prep_zmagic(p, epp);
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break;
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}
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if (error == 0) {
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/* set up our emulation information */
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epp->ep_emul = &emul_hpux;
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} else
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kill_vmcmds(&epp->ep_vmcmds);
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return (error);
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}
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static int
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exec_hpux_prep_nmagic(p, epp)
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struct proc *p;
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struct exec_package *epp;
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{
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struct hpux_exec *execp = epp->ep_hdr;
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long bsize, baddr;
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epp->ep_taddr = 0;
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epp->ep_tsize = execp->ha_text;
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epp->ep_daddr = epp->ep_taddr + roundup(execp->ha_text, HPUX__LDPGSZ);
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epp->ep_dsize = execp->ha_data + execp->ha_bss;
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epp->ep_entry = execp->ha_entry;
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/* set up command for text segment */
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NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_readvn, execp->ha_text,
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epp->ep_taddr, epp->ep_vp, HPUX_TXTOFF(*execp, NMAGIC),
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VM_PROT_READ|VM_PROT_EXECUTE);
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/* set up command for data segment */
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NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_readvn, execp->ha_data,
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epp->ep_daddr, epp->ep_vp, HPUX_DATAOFF(*execp, NMAGIC),
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VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
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/* set up command for bss segment */
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baddr = roundup(epp->ep_daddr + execp->ha_data, NBPG);
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bsize = epp->ep_daddr + epp->ep_dsize - baddr;
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if (bsize > 0)
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NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, bsize, baddr,
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NULLVP, 0, VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
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return (exec_aout_setup_stack(p, epp));
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}
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static int
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exec_hpux_prep_zmagic(p, epp)
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struct proc *p;
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struct exec_package *epp;
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{
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struct hpux_exec *execp = epp->ep_hdr;
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long bsize, baddr;
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long nontext;
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int (*vm_func) __P((struct proc *, struct exec_vmcmd *));
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/*
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* Check if vnode is in open for writing, because we want to
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* demand-page out of it. If it is, don't do it, for various
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* reasons.
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*/
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if ((execp->ha_text != 0 || execp->ha_data != 0) &&
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epp->ep_vp->v_writecount != 0)
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return (ETXTBSY);
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epp->ep_vp->v_flag |= VTEXT;
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/*
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* HP-UX ZMAGIC executables need to have their segment
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* sizes frobbed.
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*/
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nontext = execp->ha_data + execp->ha_bss;
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execp->ha_text = ctob(btoc(execp->ha_text));
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execp->ha_data = ctob(btoc(execp->ha_data));
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execp->ha_bss = nontext - execp->ha_data;
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if (execp->ha_bss < 0)
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execp->ha_bss = 0;
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epp->ep_taddr = 0;
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epp->ep_tsize = execp->ha_text;
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epp->ep_daddr = epp->ep_taddr + roundup(execp->ha_text, HPUX__LDPGSZ);
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epp->ep_dsize = execp->ha_data + execp->ha_bss;
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epp->ep_entry = execp->ha_entry;
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/*
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* If our __LDPGSZ doesn't match HP-UX's, we can't demand-page
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* the executable.
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*/
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if (__LDPGSZ == HPUX__LDPGSZ)
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vm_func = vmcmd_map_pagedvn;
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else
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vm_func = vmcmd_map_readvn;
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/* set up command for text segment */
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NEW_VMCMD(&epp->ep_vmcmds, vm_func, execp->ha_text,
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epp->ep_taddr, epp->ep_vp, HPUX_TXTOFF(*execp, ZMAGIC),
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VM_PROT_READ|VM_PROT_EXECUTE);
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/* set up command for data segment */
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NEW_VMCMD(&epp->ep_vmcmds, vm_func, execp->ha_data,
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epp->ep_daddr, epp->ep_vp, HPUX_DATAOFF(*execp, ZMAGIC),
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VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
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/* set up command for bss segment */
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baddr = roundup(epp->ep_daddr + execp->ha_data, NBPG);
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bsize = epp->ep_daddr + epp->ep_dsize - baddr;
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if (bsize > 0)
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NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, bsize, baddr,
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NULLVP, 0, VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
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return (exec_aout_setup_stack(p, epp));
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}
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/*
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* HP-UX's version of OMAGIC.
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*/
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static int
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exec_hpux_prep_omagic(p, epp)
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struct proc *p;
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struct exec_package *epp;
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{
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struct hpux_exec *execp = epp->ep_hdr;
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long dsize, bsize, baddr;
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epp->ep_taddr = 0;
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epp->ep_tsize = execp->ha_text;
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epp->ep_daddr = epp->ep_taddr + roundup(execp->ha_text, HPUX__LDPGSZ);
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epp->ep_dsize = execp->ha_data + execp->ha_bss;
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epp->ep_entry = execp->ha_entry;
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/* set up command for text and data segments */
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NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_readvn,
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execp->ha_text + execp->ha_data, epp->ep_taddr, epp->ep_vp,
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HPUX_TXTOFF(*execp, OMAGIC),
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VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
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/* set up command for bss segment */
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baddr = roundup(epp->ep_daddr + execp->ha_data, NBPG);
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bsize = epp->ep_daddr + epp->ep_dsize - baddr;
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if (bsize > 0)
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NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, bsize, baddr,
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NULLVP, 0, VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
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/*
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* Make sure (# of pages) mapped above equals (vm_tsize + vm_dsize);
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* obreak(2) relies on this fact. Both `vm_tsize' and `vm_dsize' are
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* computed (in execve(2)) by rounding *up* `ep_tsize' and `ep_dsize'
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* respectively to page boundaries.
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* Compensate `ep_dsize' for the amount of data covered by the last
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* text page.
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*/
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dsize = epp->ep_dsize + execp->ha_text - roundup(execp->ha_text, NBPG);
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epp->ep_dsize = (dsize > 0) ? dsize : 0;
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return (exec_aout_setup_stack(p, epp));
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}
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/*
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* The HP-UX execv(2) system call.
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*
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* Just check the alternate emulation path, and pass it on to the NetBSD
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* execve().
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*/
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int
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hpux_sys_execv(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_execv_args /* {
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syscallarg(char *) path;
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syscallarg(char **) argv;
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} */ *uap = v;
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struct sys_execve_args ap;
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caddr_t sg;
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sg = stackgap_init(p->p_emul);
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HPUX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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SCARG(&ap, path) = SCARG(uap, path);
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SCARG(&ap, argp) = SCARG(uap, argp);
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SCARG(&ap, envp) = NULL;
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return sys_execve(p, &ap, retval);
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}
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int
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hpux_sys_execve(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_execve_args /* {
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syscallarg(char *) path;
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syscallarg(char **) argv;
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syscallarg(char **) envp;
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} */ *uap = v;
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struct sys_execve_args ap;
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caddr_t sg;
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sg = stackgap_init(p->p_emul);
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HPUX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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SCARG(&ap, path) = SCARG(uap, path);
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SCARG(&ap, argp) = SCARG(uap, argp);
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SCARG(&ap, envp) = SCARG(uap, envp);
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return sys_execve(p, &ap, retval);
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}
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