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📄 altivec.c(4.74 KB)
📄 autoconf.c(2.69 KB)
📄 bus_machdep.c(22.3 KB)
📄 busdma_machdep.c(31.78 KB)
📄 clock.c(8.72 KB)
📄 copyinout.c(15.08 KB)
📄 cpu.c(23.74 KB)
📄 cpu_subr64.S(2.99 KB)
📄 db_disasm.c(31.78 KB)
📄 db_hwwatch.c(1.71 KB)
📄 db_interface.c(1.78 KB)
📄 db_trace.c(8.56 KB)
📄 dump_machdep.c(1.63 KB)
📄 elf32_machdep.c(11.71 KB)
📄 elf64_machdep.c(12 KB)
📄 elf_common.c(4.21 KB)
📄 exec_machdep.c(29.55 KB)
📄 fpu.c(6.47 KB)
📄 gdb_machdep.c(3.5 KB)
📄 genassym.c(10.78 KB)
📄 in_cksum.c(6.64 KB)
📄 interrupt.c(3.9 KB)
📄 intr_machdep.c(15.53 KB)
📄 iommu_if.m(1.74 KB)
📄 machdep.c(21.72 KB)
📄 mem.c(8.4 KB)
📄 minidump_machdep.c(9.09 KB)
📄 mp_machdep.c(8.81 KB)
📄 nexus.c(7.06 KB)
📄 openpic.c(11.35 KB)
📄 pic_if.m(2.45 KB)
📄 platform.c(9.15 KB)
📄 platform_if.m(6.15 KB)
📄 pmap_dispatch.c(8.92 KB)
📄 ptrace_machdep.c(3.58 KB)
📄 sc_machdep.c(2.21 KB)
📄 setjmp.S(2.45 KB)
📄 sigcode32.S(2.4 KB)
📄 sigcode64.S(2.94 KB)
📄 stack_machdep.c(3.1 KB)
📄 support.S(11.06 KB)
📄 swtch32.S(7.31 KB)
📄 swtch64.S(10.59 KB)
📄 syncicache.c(2.51 KB)
📄 sys_machdep.c(1.73 KB)
📄 trap.c(25.06 KB)
📄 uio_machdep.c(4.04 KB)
📄 uma_machdep.c(2.89 KB)
📄 vm_machdep.c(7.5 KB)

Editing: elf_common.c

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 2019 Justin Hibbits
 *
 * 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
 *    in this position and unchanged.
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 *
 * $FreeBSD$
 */

static int
__elfN(powerpc_copyout_auxargs)(struct image_params *imgp, uintptr_t base)
{
	Elf_Auxargs *args;
	Elf_Auxinfo *argarray, *pos;
	int error;

/*
	 * XXX If we can't find image's OSREL, assume it uses the new auxv
	 * format.
	 *
	 * This is specially important for rtld, that is not tagged. Using
	 * direct exec mode with new (ELFv2) binaries that expect the new auxv
	 * format would result in crashes otherwise.
	 *
	 * Unfortunately, this may break direct exec'ing old binaries,
	 * but it seems better to correctly support new binaries by default,
	 * considering the transition to ELFv2 happened quite some time
	 * ago. If needed, a sysctl may be added to allow old auxv format to
	 * be used when OSREL is not found.
	 */
	if (imgp->proc->p_osrel >= P_OSREL_POWERPC_NEW_AUX_ARGS ||
	    imgp->proc->p_osrel == 0)
		return (__elfN(freebsd_copyout_auxargs)(imgp, base));

args = (Elf_Auxargs *)imgp->auxargs;
	argarray = pos = malloc(AT_OLD_COUNT * sizeof(*pos), M_TEMP,
	    M_WAITOK | M_ZERO);

if (args->execfd != -1)
		AUXARGS_ENTRY(pos, AT_OLD_EXECFD, args->execfd);
	AUXARGS_ENTRY(pos, AT_OLD_PHDR, args->phdr);
	AUXARGS_ENTRY(pos, AT_OLD_PHENT, args->phent);
	AUXARGS_ENTRY(pos, AT_OLD_PHNUM, args->phnum);
	AUXARGS_ENTRY(pos, AT_OLD_PAGESZ, args->pagesz);
	AUXARGS_ENTRY(pos, AT_OLD_FLAGS, args->flags);
	AUXARGS_ENTRY(pos, AT_OLD_ENTRY, args->entry);
	AUXARGS_ENTRY(pos, AT_OLD_BASE, args->base);
	AUXARGS_ENTRY(pos, AT_OLD_EHDRFLAGS, args->hdr_eflags);
	if (imgp->execpathp != 0)
		AUXARGS_ENTRY_PTR(pos, AT_OLD_EXECPATH, imgp->execpathp);
	AUXARGS_ENTRY(pos, AT_OLD_OSRELDATE,
	    imgp->proc->p_ucred->cr_prison->pr_osreldate);
	if (imgp->canary != 0) {
		AUXARGS_ENTRY_PTR(pos, AT_OLD_CANARY, imgp->canary);
		AUXARGS_ENTRY(pos, AT_OLD_CANARYLEN, imgp->canarylen);
	}
	AUXARGS_ENTRY(pos, AT_OLD_NCPUS, mp_ncpus);
	if (imgp->pagesizes != 0) {
		AUXARGS_ENTRY_PTR(pos, AT_OLD_PAGESIZES, imgp->pagesizes);
		AUXARGS_ENTRY(pos, AT_OLD_PAGESIZESLEN, imgp->pagesizeslen);
	}
	if (imgp->sysent->sv_timekeep_base != 0) {
		AUXARGS_ENTRY(pos, AT_OLD_TIMEKEEP,
		    imgp->sysent->sv_timekeep_base);
	}
	AUXARGS_ENTRY(pos, AT_OLD_STACKPROT, imgp->sysent->sv_shared_page_obj
	    != NULL && imgp->stack_prot != 0 ? imgp->stack_prot :
	    imgp->sysent->sv_stackprot);
	if (imgp->sysent->sv_hwcap != NULL)
		AUXARGS_ENTRY(pos, AT_OLD_HWCAP, *imgp->sysent->sv_hwcap);
	if (imgp->sysent->sv_hwcap2 != NULL)
		AUXARGS_ENTRY(pos, AT_OLD_HWCAP2, *imgp->sysent->sv_hwcap2);
	AUXARGS_ENTRY(pos, AT_OLD_NULL, 0);

free(imgp->auxargs, M_TEMP);
	imgp->auxargs = NULL;
	KASSERT(pos - argarray <= AT_OLD_COUNT, ("Too many auxargs"));

error = copyout(argarray, (void *)base, sizeof(*argarray) * AT_OLD_COUNT);
	free(argarray, M_TEMP);
	return (error);
}

003 File Manager

Editing: elf_common.c

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