295 lines
6.8 KiB
C
295 lines
6.8 KiB
C
/* $NetBSD: svr4_32_exec_elf32.c,v 1.9 2002/12/22 02:54:34 mrg Exp $ */
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/*-
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* Copyright (c) 1994 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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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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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: svr4_32_exec_elf32.c,v 1.9 2002/12/22 02:54:34 mrg Exp $");
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#define ELFSIZE 32 /* XXX should die */
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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/namei.h>
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#include <sys/vnode.h>
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#include <sys/exec_elf.h>
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#include <sys/exec.h>
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#include <sys/mman.h>
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#include <machine/cpu.h>
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#include <machine/reg.h>
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#include <compat/svr4_32/svr4_32_types.h>
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#include <compat/svr4_32/svr4_32_util.h>
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#include <compat/svr4_32/svr4_32_exec.h>
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#include <compat/netbsd32/netbsd32_exec.h>
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#include <compat/svr4/svr4_errno.h>
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/*
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* Since this only works on 64-bit machines trying to execute
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* 32-bit binaries, it's pretty much limited to sparc64
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* trying to run solaris binaries. So, to simplify this
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* I'm making this svr4_32_copyargs() SPARC/Solaris specific
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* so we can run Solaris 8 dynamic binaries that require
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* lots of fancy specialized support.
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*/
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int sun_flags = EF_SPARC_SUN_US1|EF_SPARC_32PLUS;
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int sun_hwcap = (AV_SPARC_HWMUL_32x32|AV_SPARC_HWDIV_32x32|AV_SPARC_HWFSMULD);
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#if 0
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int
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svr4_32_copyargs(p, pack, arginfo, stackp, argp)
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struct proc *p;
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struct exec_package *pack;
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struct ps_strings *arginfo;
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char **stackp;
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void *argp;
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{
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size_t len;
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AuxInfo ai[SVR4_32_AUX_ARGSIZ], *a, *platform=NULL, *exec=NULL;
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struct elf_args *ap;
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extern char machine_model[];
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int error;
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if ((error = netbsd32_copyargs(p, pack, arginfo, stackp, argp)) != 0)
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return error;
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a = ai;
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/*
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* Push extra arguments on the stack needed by dynamically
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* linked binaries
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*/
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if ((ap = (struct elf_args *)pack->ep_emul_arg)) {
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struct proc *p = curproc; /* XXXXX */
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a->a_type = AT_SUN_PLATFORM;
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platform = a; /* Patch this later. */
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a++;
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if (pack->ep_ndp->ni_cnd.cn_flags & HASBUF) {
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a->a_type = AT_SUN_EXECNAME;
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exec = a; /* Patch this later. */
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a++;
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}
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a->a_type = AT_PHDR;
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a->a_v = ap->arg_phaddr;
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a++;
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a->a_type = AT_PHENT;
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a->a_v = ap->arg_phentsize;
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a++;
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a->a_type = AT_PHNUM;
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a->a_v = ap->arg_phnum;
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a++;
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a->a_type = AT_ENTRY;
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a->a_v = ap->arg_entry;
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a++;
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a->a_type = AT_BASE;
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a->a_v = ap->arg_interp;
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a++;
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if (sun_flags) {
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a->a_type = AT_FLAGS;
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a->a_v = sun_flags;
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a++;
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}
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a->a_type = AT_PAGESZ;
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a->a_v = PAGE_SIZE;
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a++;
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a->a_type = AT_EUID;
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a->a_v = p->p_ucred->cr_uid;
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a++;
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a->a_type = AT_RUID;
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a->a_v = p->p_cred->p_ruid;
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a++;
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a->a_type = AT_EGID;
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a->a_v = p->p_ucred->cr_gid;
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a++;
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a->a_type = AT_RGID;
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a->a_v = p->p_cred->p_rgid;
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a++;
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if (sun_hwcap) {
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a->a_type = AT_SUN_HWCAP;
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a->a_v = sun_hwcap;
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a++;
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}
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free((char *)ap, M_TEMP);
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pack->ep_emul_arg = NULL;
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}
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a->a_type = AT_NULL;
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a->a_v = 0;
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a++;
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len = (a - ai) * sizeof(AuxInfo);
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if (platform) {
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char *ptr = (char *)a;
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const char *path = NULL;
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/* Copy out the platform name. */
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platform->a_v = (u_long)(*stackp) + len;
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/* XXXX extremely inefficient.... */
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strcpy(ptr, machine_model);
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ptr += strlen(machine_model) + 1;
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len += strlen(machine_model) + 1;
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if (exec) {
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path = pack->ep_ndp->ni_cnd.cn_pnbuf;
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/* Copy out the file we're executing. */
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exec->a_v = (u_long)(*stackp) + len;
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strcpy(ptr, path);
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len += strlen(ptr)+1;
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}
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/* Round to 32-bits */
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len = (len+7)&~0x7L;
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}
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if ((error = copyout(ai, *stackp, len)) != 0)
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return error;
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*stackp += len;
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return error;
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}
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#else
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int
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svr4_32_copyargs(p, pack, arginfo, stackp, argp)
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struct proc *p;
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struct exec_package *pack;
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struct ps_strings *arginfo;
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char **stackp;
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void *argp;
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{
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size_t len;
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AuxInfo ai[SVR4_32_AUX_ARGSIZ], *a;
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struct elf_args *ap;
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int error;
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if ((error = netbsd32_copyargs(p, pack, arginfo, stackp, argp)) != 0)
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return error;
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a = ai;
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/*
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* Push extra arguments on the stack needed by dynamically
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* linked binaries
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*/
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if ((ap = (struct elf_args *)pack->ep_emul_arg)) {
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a->a_type = AT_PHDR;
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a->a_v = ap->arg_phaddr;
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a++;
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a->a_type = AT_PHENT;
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a->a_v = ap->arg_phentsize;
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a++;
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a->a_type = AT_PHNUM;
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a->a_v = ap->arg_phnum;
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a++;
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a->a_type = AT_PAGESZ;
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a->a_v = PAGE_SIZE;
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a++;
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a->a_type = AT_BASE;
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a->a_v = ap->arg_interp;
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a++;
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a->a_type = AT_ENTRY;
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a->a_v = ap->arg_entry;
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a++;
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if (sun_flags) {
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a->a_type = AT_FLAGS;
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a->a_v = sun_flags;
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a++;
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}
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free((char *)ap, M_TEMP);
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pack->ep_emul_arg = NULL;
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}
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a->a_type = AT_NULL;
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a->a_v = 0;
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a++;
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len = (a - ai) * sizeof(AuxInfo);
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if (copyout(ai, *stackp, len))
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return error;
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*stackp += len;
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return 0;
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}
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#endif
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int
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svr4_32_elf32_probe(p, epp, eh, itp, pos)
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struct proc *p;
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struct exec_package *epp;
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void *eh;
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char *itp;
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vaddr_t *pos;
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{
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int error;
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if (itp[0]) {
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if ((error = emul_find_interp(p, epp->ep_esch->es_emul->e_path, itp)))
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return error;
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}
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epp->ep_flags |= EXEC_32;
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*pos = SVR4_32_INTERP_ADDR;
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return 0;
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}
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