| 1 | /* |
| 2 | * Helpers for system instructions. |
| 3 | * |
| 4 | * Copyright (c) 2007 Jocelyn Mayer |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | |
| 20 | #include "qemu/osdep.h" |
| 21 | #include "cpu.h" |
| 22 | #include "exec/cputlb.h" |
| 23 | #include "exec/helper-proto.h" |
| 24 | #include "system/runstate.h" |
| 25 | #include "system/system.h" |
| 26 | #include "qemu/timer.h" |
| 27 | |
| 28 | |
| 29 | /* PALcode support special instructions */ |
| 30 | void helper_tbia(CPUAlphaState *env) |
| 31 | { |
| 32 | tlb_flush(env_cpu(env)); |
| 33 | } |
| 34 | |
| 35 | void helper_tbis(CPUAlphaState *env, uint64_t p) |
| 36 | { |
| 37 | tlb_flush_page(env_cpu(env), p); |
| 38 | } |
| 39 | |
| 40 | void helper_halt(uint64_t restart) |
| 41 | { |
| 42 | if (restart) { |
| 43 | qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); |
| 44 | } else { |
| 45 | qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | uint64_t helper_get_vmtime(void) |
| 50 | { |
| 51 | return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 52 | } |
| 53 | |
| 54 | uint64_t helper_get_walltime(void) |
| 55 | { |
| 56 | return qemu_clock_get_ns(rtc_clock); |
| 57 | } |
| 58 | |
| 59 | void helper_set_alarm(CPUAlphaState *env, uint64_t expire) |
| 60 | { |
| 61 | AlphaCPU *cpu = env_archcpu(env); |
| 62 | |
| 63 | if (expire) { |
| 64 | env->alarm_expire = expire; |
| 65 | timer_mod(cpu->alarm_timer, expire); |
| 66 | } else { |
| 67 | timer_del(cpu->alarm_timer); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | uint64_t HELPER(whami)(CPUAlphaState *env) |
| 72 | { |
| 73 | return env_cpu(env)->cpu_index; |
| 74 | } |