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/* $OpenBSD: exec.c,v 1.4 2019/04/10 04:17:35 deraadt Exp $ */
/*
* Copyright (c) 2010 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/reboot.h>
#include <machine/cpu.h>
#include <machine/pmon.h>
#include "libsa.h"
#include <lib/libsa/loadfile.h>
typedef void (*program)(int32_t, int32_t, int32_t *, int32_t, uint64_t *);
#define PTR_TO_CKSEG1(ptr) (int32_t)(CKSEG1_BASE | (uint64_t)(ptr))
void
run_loadfile(uint64_t *marks, int howto)
{
int32_t newargc;
int32_t *newargv;
char kernelflags[8];
char *c;
const char *arg;
/*
* Build a new commandline:
* boot <device kernel is loaded from> -<kernel options>
*/
newargc = howto == 0 ? 2 : 3;
newargv = alloc(newargc * sizeof(int32_t));
if (newargv == NULL)
panic("out of memory");
arg = "boot"; /* kernel needs this. */
newargv[0] = PTR_TO_CKSEG1(arg);
newargv[1] = PTR_TO_CKSEG1(&pmon_bootdev);
if (howto != 0) {
c = kernelflags;
*c++ = '-';
if (howto & RB_ASKNAME)
*c++ = 'a';
if (howto & RB_CONFIG)
*c++ = 'c';
if (howto & RB_KDB)
*c++ = 'd';
if (howto & RB_SINGLE)
*c++ = 's';
*c = '\0';
newargv[2] = PTR_TO_CKSEG1(&kernelflags);
}
pmon_cacheflush();
(*(program)(marks[MARK_ENTRY]))(newargc, PTR_TO_CKSEG1(newargv),
pmon_envp, pmon_callvec,
(uint64_t *)PHYS_TO_CKSEG0(marks[MARK_END]));
rd_invalidate();
_rtt();
}
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