260 lines
7.4 KiB
C
260 lines
7.4 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1993 Theo de Raadt
|
||
|
|
* 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. The name of the author may not be used to endorse or promote products
|
||
|
|
* derived from this software withough 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.
|
||
|
|
*
|
||
|
|
* $Id: sun_exec.c,v 1.1 1993/11/28 18:03:19 deraadt Exp $
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/param.h>
|
||
|
|
#include <sys/systm.h>
|
||
|
|
#include <sys/filedesc.h>
|
||
|
|
#include <sys/kernel.h>
|
||
|
|
#include <sys/proc.h>
|
||
|
|
#include <sys/mount.h>
|
||
|
|
#include <sys/malloc.h>
|
||
|
|
#include <sys/namei.h>
|
||
|
|
#include <sys/vnode.h>
|
||
|
|
#include <sys/file.h>
|
||
|
|
#include <sys/exec.h>
|
||
|
|
#include <sys/resourcevar.h>
|
||
|
|
#include <sys/wait.h>
|
||
|
|
|
||
|
|
#include <sys/mman.h>
|
||
|
|
#include <vm/vm.h>
|
||
|
|
#include <vm/vm_param.h>
|
||
|
|
#include <vm/vm_map.h>
|
||
|
|
#include <vm/vm_kern.h>
|
||
|
|
#include <vm/vm_pager.h>
|
||
|
|
|
||
|
|
#include <machine/cpu.h>
|
||
|
|
#include <machine/reg.h>
|
||
|
|
#include <machine/exec.h>
|
||
|
|
|
||
|
|
#include <compat/sunos/exec.h>
|
||
|
|
|
||
|
|
#ifdef sparc
|
||
|
|
#define sun_exec_aout_prep_zmagic exec_aout_prep_zmagic
|
||
|
|
#define sun_exec_aout_prep_nmagic exec_aout_prep_nmagic
|
||
|
|
#define sun_exec_aout_prep_omagic exec_aout_prep_omagic
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int
|
||
|
|
sun_exec_aout_makecmds(p, epp)
|
||
|
|
struct proc *p;
|
||
|
|
struct exec_package *epp;
|
||
|
|
{
|
||
|
|
struct sun_exec *sunmag;
|
||
|
|
|
||
|
|
sunmag = (struct sun_exec *)epp->ep_execp;
|
||
|
|
if(sunmag->a_machtype != SUN_M_NATIVE)
|
||
|
|
return (ENOEXEC);
|
||
|
|
|
||
|
|
epp->ep_emul = EMUL_SUNOS;
|
||
|
|
switch (sunmag->a_magic) {
|
||
|
|
case ZMAGIC:
|
||
|
|
return sun_exec_aout_prep_zmagic(p, epp);
|
||
|
|
case NMAGIC:
|
||
|
|
return sun_exec_aout_prep_nmagic(p, epp);
|
||
|
|
case OMAGIC:
|
||
|
|
return sun_exec_aout_prep_omagic(p, epp);
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return (ENOEXEC);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* the code below is only needed for sun3 emulation.
|
||
|
|
*/
|
||
|
|
#ifndef sparc
|
||
|
|
|
||
|
|
/* suns keep data seg aligned to SEGSIZ because of sun custom mmu */
|
||
|
|
#define SEGSIZ 0x20000
|
||
|
|
#define N_TXTADDR(x,m) __LDPGSZ
|
||
|
|
#define N_DATADDR(x,m) (((m)==OMAGIC) ? (N_TXTADDR(x,m) + (x).a_text) \
|
||
|
|
: (SEGSIZ + ((N_TXTADDR(x,m) + (x).a_text - 1) \
|
||
|
|
& ~(SEGSIZ-1))))
|
||
|
|
#define N_BSSADDR(x,m) (N_DATADDR(x,m)+(x).a_data)
|
||
|
|
|
||
|
|
#define N_TXTOFF(x,m) ((m)==ZMAGIC ? 0 : sizeof (struct exec))
|
||
|
|
#define N_DATOFF(x,m) (N_TXTOFF(x,m) + (x).a_text)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sun_exec_aout_prep_zmagic(): Prepare a SunOS ZMAGIC binary's exec package
|
||
|
|
*
|
||
|
|
* First, set of the various offsets/lengths in the exec package.
|
||
|
|
*
|
||
|
|
* Then, mark the text image busy (so it can be demand paged) or error
|
||
|
|
* out if this is not possible. Finally, set up vmcmds for the
|
||
|
|
* text, data, bss, and stack segments.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
sun_exec_aout_prep_zmagic(p, epp)
|
||
|
|
struct proc *p;
|
||
|
|
struct exec_package *epp;
|
||
|
|
{
|
||
|
|
struct exec *execp = epp->ep_execp;
|
||
|
|
struct exec_vmcmd *ccmdp;
|
||
|
|
|
||
|
|
epp->ep_taddr = N_TXTADDR(*execp, ZMAGIC);
|
||
|
|
epp->ep_tsize = execp->a_text;
|
||
|
|
epp->ep_daddr = N_DATADDR(*execp, ZMAGIC);
|
||
|
|
epp->ep_dsize = execp->a_data + execp->a_bss;
|
||
|
|
epp->ep_entry = execp->a_entry;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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->a_text != 0 || execp->a_data != 0) &&
|
||
|
|
(epp->ep_vp->v_flag & VTEXT) == 0 && epp->ep_vp->v_writecount != 0) {
|
||
|
|
#ifdef DIAGNOSTIC
|
||
|
|
if (epp->ep_vp->v_flag & VTEXT)
|
||
|
|
panic("exec: a VTEXT vnode has writecount != 0\n");
|
||
|
|
#endif
|
||
|
|
epp->ep_vcp = NULL;
|
||
|
|
return ETXTBSY;
|
||
|
|
}
|
||
|
|
epp->ep_vp->v_flag |= VTEXT;
|
||
|
|
|
||
|
|
/* set up command for text segment */
|
||
|
|
epp->ep_vcp = new_vmcmd(vmcmd_map_pagedvn,
|
||
|
|
execp->a_text,
|
||
|
|
epp->ep_taddr,
|
||
|
|
epp->ep_vp,
|
||
|
|
N_TXTOFF(*execp, ZMAGIC),
|
||
|
|
VM_PROT_READ | VM_PROT_EXECUTE);
|
||
|
|
ccmdp = epp->ep_vcp;
|
||
|
|
|
||
|
|
/* set up command for data segment */
|
||
|
|
ccmdp->ev_next = new_vmcmd(vmcmd_map_pagedvn,
|
||
|
|
execp->a_data,
|
||
|
|
epp->ep_daddr,
|
||
|
|
epp->ep_vp,
|
||
|
|
N_DATOFF(*execp, ZMAGIC),
|
||
|
|
VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
|
||
|
|
ccmdp = ccmdp->ev_next;
|
||
|
|
|
||
|
|
/* set up command for bss segment */
|
||
|
|
ccmdp->ev_next = new_vmcmd(vmcmd_map_zero,
|
||
|
|
execp->a_bss,
|
||
|
|
epp->ep_daddr + execp->a_data,
|
||
|
|
0,
|
||
|
|
0,
|
||
|
|
VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
|
||
|
|
ccmdp = ccmdp->ev_next;
|
||
|
|
|
||
|
|
return exec_aout_setup_stack(p, epp, ccmdp);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sun_exec_aout_prep_nmagic(): Prepare a SunOS NMAGIC binary's exec package
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
sun_exec_aout_prep_nmagic(p, epp)
|
||
|
|
struct proc *p;
|
||
|
|
struct exec_package *epp;
|
||
|
|
{
|
||
|
|
struct exec *execp = epp->ep_execp;
|
||
|
|
struct exec_vmcmd *ccmdp;
|
||
|
|
long bsize, baddr;
|
||
|
|
|
||
|
|
epp->ep_taddr = N_TXTADDR(*execp, NMAGIC);
|
||
|
|
epp->ep_tsize = execp->a_text;
|
||
|
|
epp->ep_daddr = N_DATADDR(*execp, NMAGIC);
|
||
|
|
epp->ep_dsize = execp->a_data + execp->a_bss;
|
||
|
|
epp->ep_entry = execp->a_entry;
|
||
|
|
|
||
|
|
/* set up command for text segment */
|
||
|
|
epp->ep_vcp = new_vmcmd(vmcmd_map_readvn,
|
||
|
|
execp->a_text,
|
||
|
|
epp->ep_taddr,
|
||
|
|
epp->ep_vp,
|
||
|
|
N_TXTOFF(*execp, NMAGIC),
|
||
|
|
VM_PROT_READ | VM_PROT_EXECUTE);
|
||
|
|
ccmdp = epp->ep_vcp;
|
||
|
|
|
||
|
|
/* set up command for data segment */
|
||
|
|
ccmdp->ev_next = new_vmcmd(vmcmd_map_readvn,
|
||
|
|
execp->a_data,
|
||
|
|
epp->ep_daddr,
|
||
|
|
epp->ep_vp,
|
||
|
|
N_DATOFF(*execp, NMAGIC),
|
||
|
|
VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
|
||
|
|
ccmdp = ccmdp->ev_next;
|
||
|
|
|
||
|
|
/* set up command for bss segment */
|
||
|
|
baddr = roundup(epp->ep_daddr + execp->a_data, NBPG);
|
||
|
|
bsize = epp->ep_daddr + epp->ep_dsize - baddr;
|
||
|
|
if (bsize > 0) {
|
||
|
|
ccmdp->ev_next = new_vmcmd(vmcmd_map_zero, bsize, baddr,
|
||
|
|
0, 0, VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
|
||
|
|
ccmdp = ccmdp->ev_next;
|
||
|
|
}
|
||
|
|
|
||
|
|
return exec_aout_setup_stack(p, epp, ccmdp);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sun_exec_aout_prep_omagic(): Prepare a SunOS OMAGIC binary's exec package
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
sun_exec_aout_prep_omagic(p, epp)
|
||
|
|
struct proc *p;
|
||
|
|
struct exec_package *epp;
|
||
|
|
{
|
||
|
|
struct exec *execp = epp->ep_execp;
|
||
|
|
struct exec_vmcmd *ccmdp;
|
||
|
|
long bsize, baddr;
|
||
|
|
|
||
|
|
epp->ep_taddr = N_TXTADDR(*execp, OMAGIC);
|
||
|
|
epp->ep_tsize = execp->a_text;
|
||
|
|
epp->ep_daddr = N_DATADDR(*execp, OMAGIC);
|
||
|
|
epp->ep_dsize = execp->a_data + execp->a_bss;
|
||
|
|
epp->ep_entry = execp->a_entry;
|
||
|
|
|
||
|
|
/* set up command for text and data segments */
|
||
|
|
epp->ep_vcp = new_vmcmd(vmcmd_map_readvn,
|
||
|
|
execp->a_text + execp->a_data,
|
||
|
|
epp->ep_taddr,
|
||
|
|
epp->ep_vp,
|
||
|
|
N_TXTOFF(*execp, OMAGIC),
|
||
|
|
VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
|
||
|
|
ccmdp = epp->ep_vcp;
|
||
|
|
|
||
|
|
/* set up command for bss segment */
|
||
|
|
baddr = roundup(epp->ep_daddr + execp->a_data, __LDPGSZ);
|
||
|
|
bsize = epp->ep_daddr + epp->ep_dsize - baddr;
|
||
|
|
if (bsize > 0) {
|
||
|
|
ccmdp->ev_next = new_vmcmd(vmcmd_map_zero, bsize, baddr,
|
||
|
|
0, 0, VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE);
|
||
|
|
ccmdp = ccmdp->ev_next;
|
||
|
|
}
|
||
|
|
|
||
|
|
return exec_aout_setup_stack(p, epp, ccmdp);
|
||
|
|
}
|
||
|
|
#endif /* !sparc */
|