1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2019 Justin Hibbits
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer
11 *    in this position and unchanged.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32static int
33__elfN(powerpc_copyout_auxargs)(struct image_params *imgp, uintptr_t base)
34{
35	Elf_Auxargs *args;
36	Elf_Auxinfo *argarray, *pos;
37	int error;
38
39	if (imgp->proc->p_osrel >= P_OSREL_POWERPC_NEW_AUX_ARGS)
40		return (__elfN(freebsd_copyout_auxargs)(imgp, base));
41
42	args = (Elf_Auxargs *)imgp->auxargs;
43	argarray = pos = malloc(AT_OLD_COUNT * sizeof(*pos), M_TEMP,
44	    M_WAITOK | M_ZERO);
45
46	if (args->execfd != -1)
47		AUXARGS_ENTRY(pos, AT_OLD_EXECFD, args->execfd);
48	AUXARGS_ENTRY(pos, AT_OLD_PHDR, args->phdr);
49	AUXARGS_ENTRY(pos, AT_OLD_PHENT, args->phent);
50	AUXARGS_ENTRY(pos, AT_OLD_PHNUM, args->phnum);
51	AUXARGS_ENTRY(pos, AT_OLD_PAGESZ, args->pagesz);
52	AUXARGS_ENTRY(pos, AT_OLD_FLAGS, args->flags);
53	AUXARGS_ENTRY(pos, AT_OLD_ENTRY, args->entry);
54	AUXARGS_ENTRY(pos, AT_OLD_BASE, args->base);
55	AUXARGS_ENTRY(pos, AT_OLD_EHDRFLAGS, args->hdr_eflags);
56	if (imgp->execpathp != 0)
57		AUXARGS_ENTRY_PTR(pos, AT_OLD_EXECPATH, imgp->execpathp);
58	AUXARGS_ENTRY(pos, AT_OLD_OSRELDATE,
59	    imgp->proc->p_ucred->cr_prison->pr_osreldate);
60	if (imgp->canary != 0) {
61		AUXARGS_ENTRY_PTR(pos, AT_OLD_CANARY, imgp->canary);
62		AUXARGS_ENTRY(pos, AT_OLD_CANARYLEN, imgp->canarylen);
63	}
64	AUXARGS_ENTRY(pos, AT_OLD_NCPUS, mp_ncpus);
65	if (imgp->pagesizes != 0) {
66		AUXARGS_ENTRY_PTR(pos, AT_OLD_PAGESIZES, imgp->pagesizes);
67		AUXARGS_ENTRY(pos, AT_OLD_PAGESIZESLEN, imgp->pagesizeslen);
68	}
69	if (imgp->sysent->sv_timekeep_base != 0) {
70		AUXARGS_ENTRY(pos, AT_OLD_TIMEKEEP,
71		    imgp->sysent->sv_timekeep_base);
72	}
73	AUXARGS_ENTRY(pos, AT_OLD_STACKPROT, imgp->sysent->sv_shared_page_obj
74	    != NULL && imgp->stack_prot != 0 ? imgp->stack_prot :
75	    imgp->sysent->sv_stackprot);
76	if (imgp->sysent->sv_hwcap != NULL)
77		AUXARGS_ENTRY(pos, AT_OLD_HWCAP, *imgp->sysent->sv_hwcap);
78	if (imgp->sysent->sv_hwcap2 != NULL)
79		AUXARGS_ENTRY(pos, AT_OLD_HWCAP2, *imgp->sysent->sv_hwcap2);
80	AUXARGS_ENTRY(pos, AT_OLD_NULL, 0);
81
82	free(imgp->auxargs, M_TEMP);
83	imgp->auxargs = NULL;
84	KASSERT(pos - argarray <= AT_OLD_COUNT, ("Too many auxargs"));
85
86	error = copyout(argarray, (void *)base, sizeof(*argarray) * AT_OLD_COUNT);
87	free(argarray, M_TEMP);
88	return (error);
89}
90