NetBSD-5.0.2/sys/compat/svr4_32/svr4_32_exec_elf32.c
/* $NetBSD: svr4_32_exec_elf32.c,v 1.20 2008/04/28 20:23:46 martin Exp $ */
/*-
* Copyright (c) 1994 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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.
*
* 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: svr4_32_exec_elf32.c,v 1.20 2008/04/28 20:23:46 martin Exp $");
#define ELFSIZE 32 /* XXX should die */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/namei.h>
#include <sys/vnode.h>
#include <sys/exec_elf.h>
#include <sys/exec.h>
#include <sys/mman.h>
#include <sys/cpu.h>
#include <machine/reg.h>
#include <compat/svr4_32/svr4_32_types.h>
#include <compat/svr4_32/svr4_32_util.h>
#include <compat/svr4_32/svr4_32_exec.h>
#include <compat/netbsd32/netbsd32_exec.h>
#include <compat/svr4/svr4_errno.h>
/*
* Since this only works on 64-bit machines trying to execute
* 32-bit binaries, it's pretty much limited to sparc64
* trying to run solaris binaries. So, to simplify this
* I'm making this svr4_32_copyargs() SPARC/Solaris specific
* so we can run Solaris 8 dynamic binaries that require
* lots of fancy specialized support.
*/
int sun_flags = EF_SPARC_SUN_US1|EF_SPARC_32PLUS;
int sun_hwcap = (AV_SPARC_HWMUL_32x32|AV_SPARC_HWDIV_32x32|AV_SPARC_HWFSMULD);
#if 0
int
svr4_32_copyargs(struct lwp *l, struct exec_package *pack, struct ps_strings *arginfo, char **stackp, void *argp)
{
size_t len;
AuxInfo ai[SVR4_32_AUX_ARGSIZ], *a, *platform=NULL, *exec=NULL;
struct elf_args *ap;
extern char machine_model[];
int error;
if ((error = netbsd32_copyargs(l, pack, arginfo, stackp, argp)) != 0)
return error;
a = ai;
/*
* Push extra arguments on the stack needed by dynamically
* linked binaries
*/
if ((ap = (struct elf_args *)pack->ep_emul_arg)) {
struct proc *p = curproc; /* XXXXX */
a->a_type = AT_SUN_PLATFORM;
platform = a; /* Patch this later. */
a++;
if (pack->ep_ndp->ni_cnd.cn_flags & HASBUF) {
a->a_type = AT_SUN_EXECNAME;
exec = a; /* Patch this later. */
a++;
}
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++;
if (sun_flags) {
a->a_type = AT_FLAGS;
a->a_v = sun_flags;
a++;
}
a->a_type = AT_PAGESZ;
a->a_v = PAGE_SIZE;
a++;
a->a_type = AT_EUID;
a->a_v = kauth_cred_geteuid(l->l_cred);
a++;
a->a_type = AT_RUID;
a->a_v = kauth_cred_getuid(l->l_cred);
a++;
a->a_type = AT_EGID;
a->a_v = kauth_cred_getegid(l->l_cred);
a++;
a->a_type = AT_RGID;
a->a_v = kauth_cred_getgid(l->l_cred);
a++;
if (sun_hwcap) {
a->a_type = AT_SUN_HWCAP;
a->a_v = sun_hwcap;
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 (platform) {
char *ptr = (char *)a;
const char *path = NULL;
/* Copy out the platform name. */
platform->a_v = (u_long)(*stackp) + len;
/* XXXX extremely inefficient.... */
strcpy(ptr, machine_model);
ptr += strlen(machine_model) + 1;
len += strlen(machine_model) + 1;
if (exec) {
path = pack->ep_ndp->ni_cnd.cn_pnbuf;
/* Copy out the file we're executing. */
exec->a_v = (u_long)(*stackp) + len;
strcpy(ptr, path);
len += strlen(ptr)+1;
}
/* Round to 32-bits */
len = (len+7)&~0x7L;
}
if ((error = copyout(ai, *stackp, len)) != 0)
return error;
*stackp += len;
return error;
}
#else
int
svr4_32_copyargs(struct lwp *l, struct exec_package *pack, struct ps_strings *arginfo, char **stackp, void *argp)
{
size_t len;
AuxInfo ai[SVR4_32_AUX_ARGSIZ], *a;
struct elf_args *ap;
int error;
if ((error = netbsd32_copyargs(l, pack, arginfo, stackp, argp)) != 0)
return error;
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_PAGESZ;
a->a_v = PAGE_SIZE;
a++;
a->a_type = AT_BASE;
a->a_v = ap->arg_interp;
a++;
a->a_type = AT_ENTRY;
a->a_v = ap->arg_entry;
a++;
if (sun_flags) {
a->a_type = AT_FLAGS;
a->a_v = sun_flags;
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 (copyout(ai, *stackp, len))
return error;
*stackp += len;
return 0;
}
#endif
int
svr4_32_elf32_probe(struct lwp *l, struct exec_package *epp, void *eh, char *itp, vaddr_t *pos)
{
int error;
if (itp) {
if ((error = emul_find_interp(l, epp, itp)))
return error;
}
epp->ep_flags |= EXEC_32;
#ifdef SVR4_32_INTERP_ADDR
*pos = SVR4_32_INTERP_ADDR;
#endif
return 0;
}