qemu/target/alpha/sys_helper.c
Eric Blake cf83f14005 shutdown: Add source information to SHUTDOWN and RESET
Time to wire up all the call sites that request a shutdown or
reset to use the enum added in the previous patch.

It would have been less churn to keep the common case with no
arguments as meaning guest-triggered, and only modified the
host-triggered code paths, via a wrapper function, but then we'd
still have to audit that I didn't miss any host-triggered spots;
changing the signature forces us to double-check that I correctly
categorized all callers.

Since command line options can change whether a guest reset request
causes an actual reset vs. a shutdown, it's easy to also add the
information to reset requests.

Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au> [ppc parts]
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> [SPARC part]
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x parts]
Message-Id: <20170515214114.15442-5-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-05-23 13:28:17 +02:00

92 lines
2.5 KiB
C

/*
* Helpers for system instructions.
*
* Copyright (c) 2007 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "sysemu/sysemu.h"
#include "qemu/timer.h"
uint64_t helper_load_pcc(CPUAlphaState *env)
{
#ifndef CONFIG_USER_ONLY
/* In system mode we have access to a decent high-resolution clock.
In order to make OS-level time accounting work with the RPCC,
present it with a well-timed clock fixed at 250MHz. */
return (((uint64_t)env->pcc_ofs << 32)
| (uint32_t)(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) >> 2));
#else
/* In user-mode, QEMU_CLOCK_VIRTUAL doesn't exist. Just pass through the host cpu
clock ticks. Also, don't bother taking PCC_OFS into account. */
return (uint32_t)cpu_get_host_ticks();
#endif
}
/* PALcode support special instructions */
#ifndef CONFIG_USER_ONLY
void helper_tbia(CPUAlphaState *env)
{
tlb_flush(CPU(alpha_env_get_cpu(env)));
}
void helper_tbis(CPUAlphaState *env, uint64_t p)
{
tlb_flush_page(CPU(alpha_env_get_cpu(env)), p);
}
void helper_tb_flush(CPUAlphaState *env)
{
tb_flush(CPU(alpha_env_get_cpu(env)));
}
void helper_halt(uint64_t restart)
{
if (restart) {
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
} else {
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
}
}
uint64_t helper_get_vmtime(void)
{
return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
}
uint64_t helper_get_walltime(void)
{
return qemu_clock_get_ns(rtc_clock);
}
void helper_set_alarm(CPUAlphaState *env, uint64_t expire)
{
AlphaCPU *cpu = alpha_env_get_cpu(env);
if (expire) {
env->alarm_expire = expire;
timer_mod(cpu->alarm_timer, expire);
} else {
timer_del(cpu->alarm_timer);
}
}
#endif /* CONFIG_USER_ONLY */