1 /*
2 * x86 HVF CPU type initialization
3 *
4 * Copyright 2021 SUSE LLC
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
8 */
9
10 #include "qemu/osdep.h"
11 #include "cpu.h"
12 #include "host-cpu.h"
13 #include "qapi/error.h"
14 #include "system/system.h"
15 #include "hw/boards.h"
16 #include "system/hvf.h"
17 #include "accel/accel-cpu-target.h"
18 #include "hvf-i386.h"
19
hvf_cpu_max_instance_init(X86CPU * cpu)20 static void hvf_cpu_max_instance_init(X86CPU *cpu)
21 {
22 CPUX86State *env = &cpu->env;
23
24 env->cpuid_min_level =
25 hvf_get_supported_cpuid(0x0, 0, R_EAX);
26 env->cpuid_min_xlevel =
27 hvf_get_supported_cpuid(0x80000000, 0, R_EAX);
28 env->cpuid_min_xlevel2 =
29 hvf_get_supported_cpuid(0xC0000000, 0, R_EAX);
30 }
31
hvf_cpu_xsave_init(void)32 static void hvf_cpu_xsave_init(void)
33 {
34 static bool first = true;
35 int i;
36
37 if (!first) {
38 return;
39 }
40 first = false;
41
42 /* x87 and SSE states are in the legacy region of the XSAVE area. */
43 x86_ext_save_areas[XSTATE_FP_BIT].offset = 0;
44 x86_ext_save_areas[XSTATE_SSE_BIT].offset = 0;
45
46 for (i = XSTATE_SSE_BIT + 1; i < XSAVE_STATE_AREA_COUNT; i++) {
47 ExtSaveArea *esa = &x86_ext_save_areas[i];
48
49 if (esa->size) {
50 int sz = hvf_get_supported_cpuid(0xd, i, R_EAX);
51 if (sz != 0) {
52 assert(esa->size == sz);
53 esa->offset = hvf_get_supported_cpuid(0xd, i, R_EBX);
54 }
55 }
56 }
57 }
58
hvf_cpu_instance_init(CPUState * cs)59 static void hvf_cpu_instance_init(CPUState *cs)
60 {
61 X86CPU *cpu = X86_CPU(cs);
62 X86CPUClass *xcc = X86_CPU_GET_CLASS(cpu);
63
64 host_cpu_instance_init(cpu);
65
66 /* Special cases not set in the X86CPUDefinition structs: */
67 /* TODO: in-kernel irqchip for hvf */
68
69 if (xcc->max_features) {
70 hvf_cpu_max_instance_init(cpu);
71 }
72
73 hvf_cpu_xsave_init();
74 }
75
hvf_cpu_accel_class_init(ObjectClass * oc,const void * data)76 static void hvf_cpu_accel_class_init(ObjectClass *oc, const void *data)
77 {
78 AccelCPUClass *acc = ACCEL_CPU_CLASS(oc);
79
80 acc->cpu_target_realize = host_cpu_realizefn;
81 acc->cpu_instance_init = hvf_cpu_instance_init;
82 }
83
84 static const TypeInfo hvf_cpu_accel_type_info = {
85 .name = ACCEL_CPU_NAME("hvf"),
86
87 .parent = TYPE_ACCEL_CPU,
88 .class_init = hvf_cpu_accel_class_init,
89 .abstract = true,
90 };
91
hvf_cpu_accel_register_types(void)92 static void hvf_cpu_accel_register_types(void)
93 {
94 type_register_static(&hvf_cpu_accel_type_info);
95 }
96
97 type_init(hvf_cpu_accel_register_types);
98