260 lines
6.7 KiB
C
260 lines
6.7 KiB
C
/* $NetBSD: irix_exec_elf32.c,v 1.5 2002/11/30 13:18:13 jdolecek Exp $ */
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/*-
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* Copyright (c) 2001 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 Emmanuel Dreyfus.
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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: irix_exec_elf32.c,v 1.5 2002/11/30 13:18:13 jdolecek Exp $");
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#ifndef ELFSIZE
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#define ELFSIZE 32 /* XXX should die */
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#endif
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/null.h>
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#include <sys/malloc.h>
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#include <sys/syslimits.h>
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#include <sys/exec.h>
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#include <sys/exec_elf.h>
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#include <sys/errno.h>
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#include <machine/vmparam.h>
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#include <uvm/uvm_extern.h>
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#include <compat/common/compat_util.h>
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#include <compat/irix/irix_exec.h>
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/*
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* IRIX o32 ABI probe function
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*/
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int
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ELFNAME2(irix,probe_o32)(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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#ifdef DEBUG_IRIX
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printf("irix_probe_o32()\n");
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#endif
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if ((((Elf_Ehdr *)epp->ep_hdr)->e_flags & IRIX_EF_IRIX_ABI_MASK) !=
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IRIX_EF_IRIX_ABIO32)
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return error;
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if (itp[0]) {
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/* o32 binaries use /lib/libc.so.1 */
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if (strncmp(itp, "/lib/libc.so", 12) &&
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strncmp(itp, "/usr/lib/libc.so", 16))
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return ENOEXEC;
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if ((error = emul_find_interp(p, epp->ep_esch->es_emul->e_path,
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itp)))
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return error;
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}
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*pos = ELF_NO_ADDR;
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#ifdef DEBUG_IRIX
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printf("irix_probe_o32: returning 0\n");
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printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr);
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#endif
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epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL;
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return 0;
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}
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/*
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* IRIX n32 ABI probe function
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*/
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int
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ELFNAME2(irix,probe_n32)(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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#ifdef DEBUG_IRIX
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printf("irix_probe_n32()\n");
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#endif
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if ((((Elf_Ehdr *)epp->ep_hdr)->e_flags & IRIX_EF_IRIX_ABI_MASK) !=
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IRIX_EF_IRIX_ABIN32)
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return error;
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if (itp[0]) {
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/* n32 binaries use /lib32/libc.so.1 */
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if (strncmp(itp, "/lib32/libc.so", 14) &&
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strncmp(itp, "/usr/lib32/libc.so", 18))
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return ENOEXEC;
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if ((error = emul_find_interp(p, epp->ep_esch->es_emul->e_path,
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itp)))
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return error;
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}
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*pos = ELF_NO_ADDR;
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#ifdef DEBUG_IRIX
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printf("irix_probe_n32: returning 0\n");
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printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr);
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#endif
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epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL;
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return 0;
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}
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int
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ELFNAME2(irix,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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char **cpp, *dp, *sp;
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size_t len;
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void *nullp;
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long argc, envc;
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AuxInfo ai[IRIX_ELF_AUX_ENTRIES], *a;
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struct elf_args *ap;
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int error;
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/*
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* IRIX seems to expect argc and **argv to be aligned on a
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* 16 bytes boundary. It seems there is no other way of
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* getting **argv aligned than duplicating and customizing
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* the code that sets up the stack in copyargs():
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*/
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#ifdef DEBUG_IRIX
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printf("irix_elf32_copyargs(): *stackp = %p\n", *stackp);
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#endif
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/*
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* This is borrowed from sys/kern/kern_exec.c:copyargs()
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*/
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cpp = (char **)*stackp;
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nullp = NULL;
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argc = arginfo->ps_nargvstr;
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envc = arginfo->ps_nenvstr;
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if ((error = copyout(&argc, cpp++, sizeof(argc))) != 0)
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return error;
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dp = (char *) (cpp + argc + envc + 2 + pack->ep_es->es_arglen);
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/* Align **argv on a 16 bytes boundary */
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dp = (char *)(((unsigned long)dp + 0xf) & ~0xfUL);
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sp = argp;
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arginfo->ps_argvstr = cpp; /* remember location of argv for later */
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for (; --argc >= 0; sp += len, dp += len) {
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#ifdef DEBUG_IRIX
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printf("irix_elf32_copyargs(): argc = %d, cpp = %p, dp = %p\n", (int)argc, cpp, dp);
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#endif
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if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0 ||
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(error = copyoutstr(sp, dp, ARG_MAX, &len)) != 0)
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return error;
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}
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if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
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return error;
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arginfo->ps_envstr = cpp; /* remember location of envp for later */
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for (; --envc >= 0; sp += len, dp += len)
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if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0 ||
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(error = copyoutstr(sp, dp, ARG_MAX, &len)) != 0)
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return error;
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if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
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return error;
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*stackp = (char *)cpp;
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/*
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* This is borrowed from sys/kern/exec_elf32.c:elf32_copyargs
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*/
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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_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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a->a_type = AT_PAGESZ;
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a->a_v = PAGE_SIZE;
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a++;
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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 ((error = copyout(ai, *stackp, len)) != 0)
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return error;
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/* *stackp += len; */
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#ifdef DEBUG_IRIX
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printf("*stackp = %p\n", *stackp);
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#endif
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return 0;
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}
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