NetBSD/sys/compat/svr4_32/svr4_32_exec_elf32.c

298 lines
6.9 KiB
C

/* $NetBSD: svr4_32_exec_elf32.c,v 1.4 2001/11/13 02:09:27 lukem 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.
* 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: svr4_32_exec_elf32.c,v 1.4 2001/11/13 02:09:27 lukem 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 <machine/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(pack, arginfo, stackp, argp)
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 platform_type[32];
int error;
if ((error = netbsd32_copyargs(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_SUN_UID;
a->a_v = p->p_ucred->cr_uid;
a++;
a->a_type = AT_SUN_RUID;
a->a_v = p->p_cred->p_ruid;
a++;
a->a_type = AT_SUN_GID;
a->a_v = p->p_ucred->cr_gid;
a++;
a->a_type = AT_SUN_RGID;
a->a_v = p->p_cred->p_rgid;
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, platform_type);
ptr += strlen(platform_type) + 1;
len += strlen(platform_type) + 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(pack, arginfo, stackp, argp)
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(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(p, epp, eh, itp, pos)
struct proc *p;
struct exec_package *epp;
void *eh;
char *itp;
vaddr_t *pos;
{
const char *bp;
int error;
size_t len;
if (itp[0]) {
if ((error = emul_find(p, NULL, epp->ep_esch->es_emul->e_path, itp, &bp, 0)))
return error;
if ((error = copystr(bp, itp, MAXPATHLEN, &len)))
return error;
free((void *)bp, M_TEMP);
}
epp->ep_flags |= EXEC_32;
*pos = SVR4_32_INTERP_ADDR;
return 0;
}