336 lines
8.4 KiB
C
336 lines
8.4 KiB
C
/* $NetBSD: irix_exec_elf32.c,v 1.8 2003/08/06 01:04:44 manu Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2001 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Emmanuel Dreyfus.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: irix_exec_elf32.c,v 1.8 2003/08/06 01:04:44 manu Exp $");
|
|
|
|
#ifndef ELFSIZE
|
|
#define ELFSIZE 32 /* XXX should die */
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/null.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/syslimits.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/exec_elf.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/namei.h> /* Used for irix_load_addr */
|
|
#include <sys/vnode.h> /* Used for irix_load_addr */
|
|
|
|
#include <machine/vmparam.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <compat/common/compat_util.h>
|
|
|
|
#include <compat/irix/irix_exec.h>
|
|
|
|
static int irix_load_addr(struct proc *, char *, vaddr_t *);
|
|
|
|
/*
|
|
* IRIX o32 ABI probe function
|
|
*/
|
|
int
|
|
ELFNAME2(irix,probe_o32)(p, epp, eh, itp, pos)
|
|
struct proc *p;
|
|
struct exec_package *epp;
|
|
void *eh;
|
|
char *itp;
|
|
vaddr_t *pos;
|
|
{
|
|
int error;
|
|
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_probe_o32()\n");
|
|
#endif
|
|
if ((((Elf_Ehdr *)epp->ep_hdr)->e_flags & IRIX_EF_IRIX_ABI_MASK) !=
|
|
IRIX_EF_IRIX_ABIO32)
|
|
return error;
|
|
|
|
if (itp[0]) {
|
|
/* o32 binaries use /lib/libc.so.1 */
|
|
if (strncmp(itp, "/lib/libc.so", 12) &&
|
|
strncmp(itp, "/usr/lib/libc.so", 16))
|
|
return ENOEXEC;
|
|
if ((error = emul_find_interp(p, epp->ep_esch->es_emul->e_path,
|
|
itp)))
|
|
return error;
|
|
if ((error = irix_load_addr(p, itp, pos)) != 0)
|
|
return error;
|
|
} else {
|
|
*pos = ELF_NO_ADDR;
|
|
}
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_probe_o32: returning 0\n");
|
|
printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr);
|
|
#endif
|
|
epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* IRIX n32 ABI probe function
|
|
*/
|
|
int
|
|
ELFNAME2(irix,probe_n32)(p, epp, eh, itp, pos)
|
|
struct proc *p;
|
|
struct exec_package *epp;
|
|
void *eh;
|
|
char *itp;
|
|
vaddr_t *pos;
|
|
{
|
|
int error;
|
|
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_probe_n32()\n");
|
|
#endif
|
|
if ((((Elf_Ehdr *)epp->ep_hdr)->e_flags & IRIX_EF_IRIX_ABI_MASK) !=
|
|
IRIX_EF_IRIX_ABIN32)
|
|
return error;
|
|
|
|
if (itp[0]) {
|
|
/* n32 binaries use /lib32/libc.so.1 */
|
|
if (strncmp(itp, "/lib32/libc.so", 14) &&
|
|
strncmp(itp, "/usr/lib32/libc.so", 18))
|
|
return ENOEXEC;
|
|
if ((error = emul_find_interp(p, epp->ep_esch->es_emul->e_path,
|
|
itp)))
|
|
return error;
|
|
}
|
|
*pos = ELF_NO_ADDR;
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_probe_n32: returning 0\n");
|
|
printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr);
|
|
#endif
|
|
epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
ELFNAME2(irix,copyargs)(p, pack, arginfo, stackp, argp)
|
|
struct proc *p;
|
|
struct exec_package *pack;
|
|
struct ps_strings *arginfo;
|
|
char **stackp;
|
|
void *argp;
|
|
{
|
|
char **cpp, *dp, *sp;
|
|
size_t len;
|
|
void *nullp;
|
|
long argc, envc;
|
|
AuxInfo ai[IRIX_ELF_AUX_ENTRIES], *a;
|
|
struct elf_args *ap;
|
|
int error;
|
|
|
|
/*
|
|
* IRIX seems to expect argc and **argv to be aligned on a
|
|
* 16 bytes boundary. It seems there is no other way of
|
|
* getting **argv aligned than duplicating and customizing
|
|
* the code that sets up the stack in copyargs():
|
|
*/
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_elf32_copyargs(): *stackp = %p\n", *stackp);
|
|
#endif
|
|
/*
|
|
* This is borrowed from sys/kern/kern_exec.c:copyargs()
|
|
*/
|
|
cpp = (char **)*stackp;
|
|
nullp = NULL;
|
|
argc = arginfo->ps_nargvstr;
|
|
envc = arginfo->ps_nenvstr;
|
|
if ((error = copyout(&argc, cpp++, sizeof(argc))) != 0)
|
|
return error;
|
|
|
|
dp = (char *) (cpp + argc + envc + 2 + pack->ep_es->es_arglen);
|
|
|
|
/* Align **argv on a 16 bytes boundary */
|
|
dp = (char *)(((unsigned long)dp + 0xf) & ~0xfUL);
|
|
|
|
sp = argp;
|
|
|
|
arginfo->ps_argvstr = cpp; /* remember location of argv for later */
|
|
|
|
for (; --argc >= 0; sp += len, dp += len) {
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_elf32_copyargs(): argc = %d, cpp = %p, dp = %p\n", (int)argc, cpp, dp);
|
|
#endif
|
|
if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0 ||
|
|
(error = copyoutstr(sp, dp, ARG_MAX, &len)) != 0)
|
|
return error;
|
|
}
|
|
|
|
if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
|
|
return error;
|
|
|
|
arginfo->ps_envstr = cpp; /* remember location of envp for later */
|
|
|
|
for (; --envc >= 0; sp += len, dp += len)
|
|
if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0 ||
|
|
(error = copyoutstr(sp, dp, ARG_MAX, &len)) != 0)
|
|
return error;
|
|
|
|
if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
|
|
return error;
|
|
|
|
*stackp = (char *)cpp;
|
|
|
|
/*
|
|
* This is borrowed from sys/kern/exec_elf32.c:elf32_copyargs
|
|
*/
|
|
a = ai;
|
|
|
|
/*
|
|
* Push extra arguments on the stack needed by dynamically
|
|
* linked binaries
|
|
*/
|
|
if ((ap = (struct elf_args *)pack->ep_emul_arg)) {
|
|
|
|
a->a_type = AT_PHDR;
|
|
a->a_v = ap->arg_phaddr;
|
|
a++;
|
|
|
|
a->a_type = AT_PHENT;
|
|
a->a_v = ap->arg_phentsize;
|
|
a++;
|
|
|
|
a->a_type = AT_PHNUM;
|
|
a->a_v = ap->arg_phnum;
|
|
a++;
|
|
|
|
a->a_type = AT_ENTRY;
|
|
a->a_v = ap->arg_entry;
|
|
a++;
|
|
|
|
a->a_type = AT_BASE;
|
|
a->a_v = ap->arg_interp;
|
|
a++;
|
|
|
|
a->a_type = AT_PAGESZ;
|
|
a->a_v = PAGE_SIZE;
|
|
a++;
|
|
|
|
free((char *)ap, M_TEMP);
|
|
pack->ep_emul_arg = NULL;
|
|
}
|
|
|
|
a->a_type = AT_NULL;
|
|
a->a_v = 0;
|
|
a++;
|
|
|
|
len = (a - ai) * sizeof(AuxInfo);
|
|
if ((error = copyout(ai, *stackp, len)) != 0)
|
|
return error;
|
|
/* *stackp += len; */
|
|
#ifdef DEBUG_IRIX
|
|
printf("*stackp = %p\n", *stackp);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Find the load address of the intepreter. Most of the code is
|
|
* borrowed from sys/kern/exec_elf32.c:load_file().
|
|
* There is nothing specific to IRIX here, it may move to
|
|
* sys/compat/compat_util.c if another emulation needs it.
|
|
*/
|
|
#define MAXPHNUM 50
|
|
static int
|
|
irix_load_addr(p, itp, pos)
|
|
struct proc *p;
|
|
char *itp;
|
|
vaddr_t *pos;
|
|
{
|
|
int error = 0;
|
|
int i;
|
|
struct nameidata nd;
|
|
struct vnode *vp;
|
|
Elf_Ehdr eh;
|
|
Elf_Phdr *ph = NULL;
|
|
u_long phsize;
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, itp, p);
|
|
if ((error = namei(&nd)) != 0)
|
|
return ELFDEFNNAME(NO_ADDR);
|
|
vp = nd.ni_vp;
|
|
|
|
/* Check this is a regular file */
|
|
if (vp->v_type != VREG) {
|
|
VOP_UNLOCK(vp, 0);
|
|
error = EACCES;
|
|
goto bad;
|
|
}
|
|
|
|
VOP_UNLOCK(vp, 0);
|
|
|
|
if ((error = exec_read_from(p, vp, 0, &eh, sizeof(eh))) != 0)
|
|
goto bad;
|
|
|
|
if ((error = ELFNAME(check_header)(&eh, ET_DYN)) != 0)
|
|
goto bad;
|
|
|
|
if (eh.e_phnum > MAXPHNUM)
|
|
goto bad;
|
|
|
|
phsize = eh.e_phnum * sizeof(Elf_Phdr);
|
|
ph = (Elf_Phdr *)malloc(phsize, M_TEMP, M_WAITOK);
|
|
if ((error = exec_read_from(p, vp, eh.e_phoff, ph, phsize)) != 0)
|
|
goto bad;
|
|
|
|
/* Look for the first loadable section */
|
|
for (i = 0; i < eh.e_phnum; i++)
|
|
if (ph[i].p_type == PT_LOAD)
|
|
break;
|
|
if (i == eh.e_phnum) {
|
|
error = ENOEXEC;
|
|
goto bad;
|
|
}
|
|
|
|
*pos = ph[i].p_vaddr;
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_load_addr: file %s, addr %p\n", itp, (void *)*pos);
|
|
#endif
|
|
bad:
|
|
if (ph != NULL)
|
|
free(ph, M_TEMP);
|
|
vrele(vp);
|
|
return error;
|
|
}
|