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/exec-all.h" 23 #include "exec/tb-flush.h" 24 #include "exec/helper-proto.h" 25 #include "sysemu/runstate.h" 26 #include "sysemu/sysemu.h" 27 #include "qemu/timer.h" 28 29 30 /* PALcode support special instructions */ 31 void helper_tbia(CPUAlphaState *env) 32 { 33 tlb_flush(env_cpu(env)); 34 } 35 36 void helper_tbis(CPUAlphaState *env, uint64_t p) 37 { 38 tlb_flush_page(env_cpu(env), p); 39 } 40 41 void helper_tb_flush(CPUAlphaState *env) 42 { 43 tb_flush(env_cpu(env)); 44 } 45 46 void helper_halt(uint64_t restart) 47 { 48 if (restart) { 49 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 50 } else { 51 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 52 } 53 } 54 55 uint64_t helper_get_vmtime(void) 56 { 57 return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 58 } 59 60 uint64_t helper_get_walltime(void) 61 { 62 return qemu_clock_get_ns(rtc_clock); 63 } 64 65 void helper_set_alarm(CPUAlphaState *env, uint64_t expire) 66 { 67 AlphaCPU *cpu = env_archcpu(env); 68 69 if (expire) { 70 env->alarm_expire = expire; 71 timer_mod(cpu->alarm_timer, expire); 72 } else { 73 timer_del(cpu->alarm_timer); 74 } 75 } 76