3 #include "sysemu/kvm.h"
6 static bool vfp_needed(void *opaque
)
9 CPUARMState
*env
= &cpu
->env
;
11 return arm_feature(env
, ARM_FEATURE_VFP
);
14 static int get_fpscr(QEMUFile
*f
, void *opaque
, size_t size
)
17 CPUARMState
*env
= &cpu
->env
;
18 uint32_t val
= qemu_get_be32(f
);
20 vfp_set_fpscr(env
, val
);
24 static void put_fpscr(QEMUFile
*f
, void *opaque
, size_t size
)
27 CPUARMState
*env
= &cpu
->env
;
29 qemu_put_be32(f
, vfp_get_fpscr(env
));
32 static const VMStateInfo vmstate_fpscr
= {
38 static const VMStateDescription vmstate_vfp
= {
41 .minimum_version_id
= 3,
42 .minimum_version_id_old
= 3,
43 .fields
= (VMStateField
[]) {
44 VMSTATE_FLOAT64_ARRAY(env
.vfp
.regs
, ARMCPU
, 64),
45 /* The xregs array is a little awkward because element 1 (FPSCR)
46 * requires a specific accessor, so we have to split it up in
49 VMSTATE_UINT32(env
.vfp
.xregs
[0], ARMCPU
),
50 VMSTATE_UINT32_SUB_ARRAY(env
.vfp
.xregs
, ARMCPU
, 2, 14),
54 .size
= sizeof(uint32_t),
55 .info
= &vmstate_fpscr
,
63 static bool iwmmxt_needed(void *opaque
)
66 CPUARMState
*env
= &cpu
->env
;
68 return arm_feature(env
, ARM_FEATURE_IWMMXT
);
71 static const VMStateDescription vmstate_iwmmxt
= {
74 .minimum_version_id
= 1,
75 .minimum_version_id_old
= 1,
76 .fields
= (VMStateField
[]) {
77 VMSTATE_UINT64_ARRAY(env
.iwmmxt
.regs
, ARMCPU
, 16),
78 VMSTATE_UINT32_ARRAY(env
.iwmmxt
.cregs
, ARMCPU
, 16),
83 static bool m_needed(void *opaque
)
86 CPUARMState
*env
= &cpu
->env
;
88 return arm_feature(env
, ARM_FEATURE_M
);
91 const VMStateDescription vmstate_m
= {
94 .minimum_version_id
= 1,
95 .minimum_version_id_old
= 1,
96 .fields
= (VMStateField
[]) {
97 VMSTATE_UINT32(env
.v7m
.other_sp
, ARMCPU
),
98 VMSTATE_UINT32(env
.v7m
.vecbase
, ARMCPU
),
99 VMSTATE_UINT32(env
.v7m
.basepri
, ARMCPU
),
100 VMSTATE_UINT32(env
.v7m
.control
, ARMCPU
),
101 VMSTATE_INT32(env
.v7m
.current_sp
, ARMCPU
),
102 VMSTATE_INT32(env
.v7m
.exception
, ARMCPU
),
103 VMSTATE_END_OF_LIST()
107 static bool thumb2ee_needed(void *opaque
)
109 ARMCPU
*cpu
= opaque
;
110 CPUARMState
*env
= &cpu
->env
;
112 return arm_feature(env
, ARM_FEATURE_THUMB2EE
);
115 static const VMStateDescription vmstate_thumb2ee
= {
116 .name
= "cpu/thumb2ee",
118 .minimum_version_id
= 1,
119 .minimum_version_id_old
= 1,
120 .fields
= (VMStateField
[]) {
121 VMSTATE_UINT32(env
.teecr
, ARMCPU
),
122 VMSTATE_UINT32(env
.teehbr
, ARMCPU
),
123 VMSTATE_END_OF_LIST()
127 static int get_cpsr(QEMUFile
*f
, void *opaque
, size_t size
)
129 ARMCPU
*cpu
= opaque
;
130 CPUARMState
*env
= &cpu
->env
;
131 uint32_t val
= qemu_get_be32(f
);
133 /* Avoid mode switch when restoring CPSR */
134 env
->uncached_cpsr
= val
& CPSR_M
;
135 cpsr_write(env
, val
, 0xffffffff);
139 static void put_cpsr(QEMUFile
*f
, void *opaque
, size_t size
)
141 ARMCPU
*cpu
= opaque
;
142 CPUARMState
*env
= &cpu
->env
;
144 qemu_put_be32(f
, cpsr_read(env
));
147 static const VMStateInfo vmstate_cpsr
= {
153 static void cpu_pre_save(void *opaque
)
155 ARMCPU
*cpu
= opaque
;
158 if (!write_kvmstate_to_list(cpu
)) {
159 /* This should never fail */
163 if (!write_cpustate_to_list(cpu
)) {
164 /* This should never fail. */
169 cpu
->cpreg_vmstate_array_len
= cpu
->cpreg_array_len
;
170 memcpy(cpu
->cpreg_vmstate_indexes
, cpu
->cpreg_indexes
,
171 cpu
->cpreg_array_len
* sizeof(uint64_t));
172 memcpy(cpu
->cpreg_vmstate_values
, cpu
->cpreg_values
,
173 cpu
->cpreg_array_len
* sizeof(uint64_t));
176 static int cpu_post_load(void *opaque
, int version_id
)
178 ARMCPU
*cpu
= opaque
;
181 /* Update the values list from the incoming migration data.
182 * Anything in the incoming data which we don't know about is
183 * a migration failure; anything we know about but the incoming
184 * data doesn't specify retains its current (reset) value.
185 * The indexes list remains untouched -- we only inspect the
186 * incoming migration index list so we can match the values array
187 * entries with the right slots in our own values array.
190 for (i
= 0, v
= 0; i
< cpu
->cpreg_array_len
191 && v
< cpu
->cpreg_vmstate_array_len
; i
++) {
192 if (cpu
->cpreg_vmstate_indexes
[v
] > cpu
->cpreg_indexes
[i
]) {
193 /* register in our list but not incoming : skip it */
196 if (cpu
->cpreg_vmstate_indexes
[v
] < cpu
->cpreg_indexes
[i
]) {
197 /* register in their list but not ours: fail migration */
200 /* matching register, copy the value over */
201 cpu
->cpreg_values
[i
] = cpu
->cpreg_vmstate_values
[v
];
206 if (!write_list_to_kvmstate(cpu
)) {
209 /* Note that it's OK for the TCG side not to know about
210 * every register in the list; KVM is authoritative if
213 write_list_to_cpustate(cpu
);
215 if (!write_list_to_cpustate(cpu
)) {
223 const VMStateDescription vmstate_arm_cpu
= {
226 .minimum_version_id
= 13,
227 .minimum_version_id_old
= 13,
228 .pre_save
= cpu_pre_save
,
229 .post_load
= cpu_post_load
,
230 .fields
= (VMStateField
[]) {
231 VMSTATE_UINT32_ARRAY(env
.regs
, ARMCPU
, 16),
235 .size
= sizeof(uint32_t),
236 .info
= &vmstate_cpsr
,
240 VMSTATE_UINT32(env
.spsr
, ARMCPU
),
241 VMSTATE_UINT32_ARRAY(env
.banked_spsr
, ARMCPU
, 6),
242 VMSTATE_UINT32_ARRAY(env
.banked_r13
, ARMCPU
, 6),
243 VMSTATE_UINT32_ARRAY(env
.banked_r14
, ARMCPU
, 6),
244 VMSTATE_UINT32_ARRAY(env
.usr_regs
, ARMCPU
, 5),
245 VMSTATE_UINT32_ARRAY(env
.fiq_regs
, ARMCPU
, 5),
246 /* The length-check must come before the arrays to avoid
247 * incoming data possibly overflowing the array.
249 VMSTATE_INT32_LE(cpreg_vmstate_array_len
, ARMCPU
),
250 VMSTATE_VARRAY_INT32(cpreg_vmstate_indexes
, ARMCPU
,
251 cpreg_vmstate_array_len
,
252 0, vmstate_info_uint64
, uint64_t),
253 VMSTATE_VARRAY_INT32(cpreg_vmstate_values
, ARMCPU
,
254 cpreg_vmstate_array_len
,
255 0, vmstate_info_uint64
, uint64_t),
256 VMSTATE_UINT32(env
.exclusive_addr
, ARMCPU
),
257 VMSTATE_UINT32(env
.exclusive_val
, ARMCPU
),
258 VMSTATE_UINT32(env
.exclusive_high
, ARMCPU
),
259 VMSTATE_UINT64(env
.features
, ARMCPU
),
260 VMSTATE_TIMER(gt_timer
[GTIMER_PHYS
], ARMCPU
),
261 VMSTATE_TIMER(gt_timer
[GTIMER_VIRT
], ARMCPU
),
262 VMSTATE_END_OF_LIST()
264 .subsections
= (VMStateSubsection
[]) {
266 .vmsd
= &vmstate_vfp
,
267 .needed
= vfp_needed
,
269 .vmsd
= &vmstate_iwmmxt
,
270 .needed
= iwmmxt_needed
,
275 .vmsd
= &vmstate_thumb2ee
,
276 .needed
= thumb2ee_needed
,