tests/qtest/fuzz: Fix build failure
[qemu/ar7.git] / accel / tcg / tcg-accel-ops.c
blob7191315aeed4dca51e09aeefb806668a38294bc1
1 /*
2 * QEMU TCG vCPU common functionality
4 * Functionality common to all TCG vCPU variants: mttcg, rr and icount.
6 * Copyright (c) 2003-2008 Fabrice Bellard
7 * Copyright (c) 2014 Red Hat Inc.
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 * THE SOFTWARE.
28 #include "qemu/osdep.h"
29 #include "qemu-common.h"
30 #include "sysemu/tcg.h"
31 #include "sysemu/replay.h"
32 #include "qemu/main-loop.h"
33 #include "qemu/guest-random.h"
34 #include "exec/exec-all.h"
36 #include "tcg-accel-ops.h"
37 #include "tcg-accel-ops-mttcg.h"
38 #include "tcg-accel-ops-rr.h"
39 #include "tcg-accel-ops-icount.h"
41 /* common functionality among all TCG variants */
43 void tcg_cpu_init_cflags(CPUState *cpu, bool parallel)
45 uint32_t cflags = cpu->cluster_index << CF_CLUSTER_SHIFT;
46 cflags |= parallel ? CF_PARALLEL : 0;
47 cflags |= icount_enabled() ? CF_USE_ICOUNT : 0;
48 cpu->tcg_cflags = cflags;
51 void tcg_cpus_destroy(CPUState *cpu)
53 cpu_thread_signal_destroyed(cpu);
56 int tcg_cpus_exec(CPUState *cpu)
58 int ret;
59 #ifdef CONFIG_PROFILER
60 int64_t ti;
61 #endif
62 assert(tcg_enabled());
63 #ifdef CONFIG_PROFILER
64 ti = profile_getclock();
65 #endif
66 cpu_exec_start(cpu);
67 ret = cpu_exec(cpu);
68 cpu_exec_end(cpu);
69 #ifdef CONFIG_PROFILER
70 qatomic_set(&tcg_ctx->prof.cpu_exec_time,
71 tcg_ctx->prof.cpu_exec_time + profile_getclock() - ti);
72 #endif
73 return ret;
76 /* mask must never be zero, except for A20 change call */
77 void tcg_handle_interrupt(CPUState *cpu, int mask)
79 g_assert(qemu_mutex_iothread_locked());
81 cpu->interrupt_request |= mask;
84 * If called from iothread context, wake the target cpu in
85 * case its halted.
87 if (!qemu_cpu_is_self(cpu)) {
88 qemu_cpu_kick(cpu);
89 } else {
90 qatomic_set(&cpu_neg(cpu)->icount_decr.u16.high, -1);
94 static void tcg_accel_ops_init(AccelOpsClass *ops)
96 if (qemu_tcg_mttcg_enabled()) {
97 ops->create_vcpu_thread = mttcg_start_vcpu_thread;
98 ops->kick_vcpu_thread = mttcg_kick_vcpu_thread;
99 ops->handle_interrupt = tcg_handle_interrupt;
100 } else if (icount_enabled()) {
101 ops->create_vcpu_thread = rr_start_vcpu_thread;
102 ops->kick_vcpu_thread = rr_kick_vcpu_thread;
103 ops->handle_interrupt = icount_handle_interrupt;
104 ops->get_virtual_clock = icount_get;
105 ops->get_elapsed_ticks = icount_get;
106 } else {
107 ops->create_vcpu_thread = rr_start_vcpu_thread;
108 ops->kick_vcpu_thread = rr_kick_vcpu_thread;
109 ops->handle_interrupt = tcg_handle_interrupt;
113 static void tcg_accel_ops_class_init(ObjectClass *oc, void *data)
115 AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
117 ops->ops_init = tcg_accel_ops_init;
120 static const TypeInfo tcg_accel_ops_type = {
121 .name = ACCEL_OPS_NAME("tcg"),
123 .parent = TYPE_ACCEL_OPS,
124 .class_init = tcg_accel_ops_class_init,
125 .abstract = true,
128 static void tcg_accel_ops_register_types(void)
130 type_register_static(&tcg_accel_ops_type);
132 type_init(tcg_accel_ops_register_types);