/* $NetBSD: db_machdep.c,v 1.29 2021/02/23 07:13:53 mrg Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Gordon W. Ross.
*
* 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.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* Machine-dependent functions used by ddb
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: db_machdep.c,v 1.29 2021/02/23 07:13:53 mrg Exp $");
#include <sys/param.h>
#include <sys/proc.h>
#include <machine/db_machdep.h>
#include <machine/pte.h>
#include <sun3/sun3/machdep.h>
#ifdef _SUN3_
#include <sun3/sun3/control.h>
#endif /* SUN3 */
#include <ddb/db_command.h>
#include <ddb/db_output.h>
#include <ddb/db_interface.h>
static void db_mach_abort (db_expr_t, bool, db_expr_t, const char *);
static void db_mach_halt (db_expr_t, bool, db_expr_t, const char *);
static void db_mach_reboot (db_expr_t, bool, db_expr_t, const char *);
static void db_mach_pagemap(db_expr_t, bool, db_expr_t, const char *);
const struct db_command db_machine_command_table[] = {
{ DDB_ADD_CMD("abort", db_mach_abort, 0,
"Calls prom_abort()", NULL, NULL) },
{ DDB_ADD_CMD("halt", db_mach_halt, 0,
"Calls prom_halt()", NULL, NULL) },
{ DDB_ADD_CMD("pgmap", db_mach_pagemap, CS_SET_DOT,
"Prints the PTE and segmap values", "virtual-address", NULL) },
{ DDB_ADD_CMD("reboot", db_mach_reboot, 0,
"Calls prom_boot()", NULL, NULL) },
{ DDB_END_CMD },
};
/*
* Machine-specific ddb commands for the sun3:
* abort: Drop into monitor via abort (allows continue)
* halt: Exit to monitor as in halt(8)
* reboot: Reboot the machine as in reboot(8)
* pgmap: Given addr, Print addr, segmap, pagemap, pte
*/
static void
db_mach_abort(db_expr_t addr, bool have_addr, db_expr_t count,
const char *modif)
{
sunmon_abort();
}
static void
db_mach_halt(db_expr_t addr, bool have_addr, db_expr_t count, const char *modif)
{
sunmon_halt();
}
static void
db_mach_reboot(db_expr_t addr, bool have_addr, db_expr_t count,
const char *modif)
{
sunmon_reboot("");
}
static void pte_print(int);
static void
db_mach_pagemap(db_expr_t addr, bool have_addr, db_expr_t count,
const char *modif)
{
u_long va = m68k_trunc_page((u_long)addr);
int pte;
#ifdef _SUN3_
int sme;
sme = get_segmap(va);
if (sme == 0xFF) {
pte = 0;
} else {
pte = get_pte(va);
}
db_printf("0x%08lx [%02x] 0x%08x", va, sme, pte);
#endif /* SUN3 */
#ifdef _SUN3X_
pte = get_pte(va);
db_printf("0x%08lx 0x%08x", va, pte);
#endif /* SUN3X */
pte_print(pte);
db_next = va + PAGE_SIZE;
}
#ifdef _SUN3_
static void
pte_print(int pte)
{
int t;
static const char *pgt_names[] = {
"MEM", "OBIO", "VMES", "VMEL",
};
if (pte & PG_VALID) {
db_printf(" V");
if (pte & PG_WRITE)
db_printf(" W");
if (pte & PG_SYSTEM)
db_printf(" S");
if (pte & PG_NC)
db_printf(" NC");
if (pte & PG_REF)
db_printf(" Ref");
if (pte & PG_MOD)
db_printf(" Mod");
t = (pte >> PG_TYPE_SHIFT) & 3;
db_printf(" %s", pgt_names[t]);
db_printf(" PA=0x%x\n", PG_PA(pte));
} else
db_printf(" INVALID\n");
}
#endif /* SUN3 */
#ifdef _SUN3X_
static void
pte_print(int pte)
{
if (pte & MMU_SHORT_PTE_DT) {
if (pte & MMU_SHORT_PTE_CI)
db_printf(" CI");
if (pte & MMU_SHORT_PTE_M)
db_printf(" Mod");
if (pte & MMU_SHORT_PTE_USED)
db_printf(" Ref");
if (pte & MMU_SHORT_PTE_WP)
db_printf(" WP");
db_printf(" DT%d\n", pte & MMU_SHORT_PTE_DT);
} else
db_printf(" INVALID\n");
}
#endif /* SUN3X */