intc/xilinx_intc: Use qemu_set_irq
[qemu.git] / target-alpha / sys_helper.c
blob339501af90fc80b64a117e36fff8470c96a7da09
1 /*
2 * Helpers for system instructions.
4 * Copyright (c) 2007 Jocelyn Mayer
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 of the License, or (at your option) any later version.
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.
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/>.
20 #include "cpu.h"
21 #include "helper.h"
22 #include "sysemu/sysemu.h"
23 #include "qemu/timer.h"
26 uint64_t helper_load_pcc(CPUAlphaState *env)
28 #ifndef CONFIG_USER_ONLY
29 /* In system mode we have access to a decent high-resolution clock.
30 In order to make OS-level time accounting work with the RPCC,
31 present it with a well-timed clock fixed at 250MHz. */
32 return (((uint64_t)env->pcc_ofs << 32)
33 | (uint32_t)(qemu_get_clock_ns(vm_clock) >> 2));
34 #else
35 /* In user-mode, vm_clock doesn't exist. Just pass through the host cpu
36 clock ticks. Also, don't bother taking PCC_OFS into account. */
37 return (uint32_t)cpu_get_real_ticks();
38 #endif
41 /* PALcode support special instructions */
42 #ifndef CONFIG_USER_ONLY
43 void helper_hw_ret(CPUAlphaState *env, uint64_t a)
45 env->pc = a & ~3;
46 env->intr_flag = 0;
47 env->lock_addr = -1;
48 if ((a & 1) == 0) {
49 env->pal_mode = 0;
50 swap_shadow_regs(env);
54 void helper_tbia(CPUAlphaState *env)
56 tlb_flush(env, 1);
59 void helper_tbis(CPUAlphaState *env, uint64_t p)
61 tlb_flush_page(env, p);
64 void helper_halt(uint64_t restart)
66 if (restart) {
67 qemu_system_reset_request();
68 } else {
69 qemu_system_shutdown_request();
73 uint64_t helper_get_time(void)
75 return qemu_get_clock_ns(rtc_clock);
78 void helper_set_alarm(CPUAlphaState *env, uint64_t expire)
80 AlphaCPU *cpu = alpha_env_get_cpu(env);
82 if (expire) {
83 env->alarm_expire = expire;
84 qemu_mod_timer(cpu->alarm_timer, expire);
85 } else {
86 qemu_del_timer(cpu->alarm_timer);
89 #endif /* CONFIG_USER_ONLY */