]> Git Repo - qemu.git/blame - target/arm/machine.c
cputlb: introduce tlb_flush_*_all_cpus[_synced]
[qemu.git] / target / arm / machine.c
CommitLineData
74c21bd0 1#include "qemu/osdep.h"
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2#include "qemu-common.h"
3#include "cpu.h"
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4#include "hw/hw.h"
5#include "hw/boards.h"
a7bf3034 6#include "qemu/error-report.h"
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7#include "sysemu/kvm.h"
8#include "kvm_arm.h"
9ee98ce8 9#include "internals.h"
1e00b8d5 10#include "migration/cpu.h"
8dd3dca3 11
3cc1d208 12static bool vfp_needed(void *opaque)
8dd3dca3 13{
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14 ARMCPU *cpu = opaque;
15 CPUARMState *env = &cpu->env;
8dd3dca3 16
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17 return arm_feature(env, ARM_FEATURE_VFP);
18}
8dd3dca3 19
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20static int get_fpscr(QEMUFile *f, void *opaque, size_t size,
21 VMStateField *field)
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22{
23 ARMCPU *cpu = opaque;
24 CPUARMState *env = &cpu->env;
25 uint32_t val = qemu_get_be32(f);
26
27 vfp_set_fpscr(env, val);
28 return 0;
29}
30
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31static int put_fpscr(QEMUFile *f, void *opaque, size_t size,
32 VMStateField *field, QJSON *vmdesc)
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33{
34 ARMCPU *cpu = opaque;
35 CPUARMState *env = &cpu->env;
36
37 qemu_put_be32(f, vfp_get_fpscr(env));
2c21ee76 38 return 0;
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39}
40
41static const VMStateInfo vmstate_fpscr = {
42 .name = "fpscr",
43 .get = get_fpscr,
44 .put = put_fpscr,
45};
46
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47static const VMStateDescription vmstate_vfp = {
48 .name = "cpu/vfp",
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49 .version_id = 3,
50 .minimum_version_id = 3,
5cd8cada 51 .needed = vfp_needed,
3cc1d208 52 .fields = (VMStateField[]) {
3926cc84 53 VMSTATE_FLOAT64_ARRAY(env.vfp.regs, ARMCPU, 64),
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54 /* The xregs array is a little awkward because element 1 (FPSCR)
55 * requires a specific accessor, so we have to split it up in
56 * the vmstate:
57 */
58 VMSTATE_UINT32(env.vfp.xregs[0], ARMCPU),
59 VMSTATE_UINT32_SUB_ARRAY(env.vfp.xregs, ARMCPU, 2, 14),
60 {
61 .name = "fpscr",
62 .version_id = 0,
63 .size = sizeof(uint32_t),
64 .info = &vmstate_fpscr,
65 .flags = VMS_SINGLE,
66 .offset = 0,
67 },
3cc1d208 68 VMSTATE_END_OF_LIST()
8dd3dca3 69 }
3cc1d208 70};
8dd3dca3 71
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72static bool iwmmxt_needed(void *opaque)
73{
74 ARMCPU *cpu = opaque;
75 CPUARMState *env = &cpu->env;
8dd3dca3 76
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77 return arm_feature(env, ARM_FEATURE_IWMMXT);
78}
ffe47d33 79
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80static const VMStateDescription vmstate_iwmmxt = {
81 .name = "cpu/iwmmxt",
82 .version_id = 1,
83 .minimum_version_id = 1,
5cd8cada 84 .needed = iwmmxt_needed,
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85 .fields = (VMStateField[]) {
86 VMSTATE_UINT64_ARRAY(env.iwmmxt.regs, ARMCPU, 16),
87 VMSTATE_UINT32_ARRAY(env.iwmmxt.cregs, ARMCPU, 16),
88 VMSTATE_END_OF_LIST()
ffe47d33 89 }
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90};
91
92static bool m_needed(void *opaque)
93{
94 ARMCPU *cpu = opaque;
95 CPUARMState *env = &cpu->env;
96
97 return arm_feature(env, ARM_FEATURE_M);
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98}
99
6df05bdd 100static const VMStateDescription vmstate_m = {
3cc1d208 101 .name = "cpu/m",
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102 .version_id = 3,
103 .minimum_version_id = 3,
5cd8cada 104 .needed = m_needed,
3cc1d208 105 .fields = (VMStateField[]) {
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106 VMSTATE_UINT32(env.v7m.vecbase, ARMCPU),
107 VMSTATE_UINT32(env.v7m.basepri, ARMCPU),
108 VMSTATE_UINT32(env.v7m.control, ARMCPU),
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109 VMSTATE_UINT32(env.v7m.ccr, ARMCPU),
110 VMSTATE_UINT32(env.v7m.cfsr, ARMCPU),
111 VMSTATE_UINT32(env.v7m.hfsr, ARMCPU),
112 VMSTATE_UINT32(env.v7m.dfsr, ARMCPU),
113 VMSTATE_UINT32(env.v7m.mmfar, ARMCPU),
114 VMSTATE_UINT32(env.v7m.bfar, ARMCPU),
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115 VMSTATE_INT32(env.v7m.exception, ARMCPU),
116 VMSTATE_END_OF_LIST()
117 }
118};
119
120static bool thumb2ee_needed(void *opaque)
8dd3dca3 121{
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122 ARMCPU *cpu = opaque;
123 CPUARMState *env = &cpu->env;
8dd3dca3 124
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125 return arm_feature(env, ARM_FEATURE_THUMB2EE);
126}
8dd3dca3 127
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128static const VMStateDescription vmstate_thumb2ee = {
129 .name = "cpu/thumb2ee",
130 .version_id = 1,
131 .minimum_version_id = 1,
5cd8cada 132 .needed = thumb2ee_needed,
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133 .fields = (VMStateField[]) {
134 VMSTATE_UINT32(env.teecr, ARMCPU),
135 VMSTATE_UINT32(env.teehbr, ARMCPU),
136 VMSTATE_END_OF_LIST()
8dd3dca3 137 }
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138};
139
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140static bool pmsav7_needed(void *opaque)
141{
142 ARMCPU *cpu = opaque;
143 CPUARMState *env = &cpu->env;
144
145 return arm_feature(env, ARM_FEATURE_MPU) &&
146 arm_feature(env, ARM_FEATURE_V7);
147}
148
149static bool pmsav7_rgnr_vmstate_validate(void *opaque, int version_id)
150{
151 ARMCPU *cpu = opaque;
152
153 return cpu->env.cp15.c6_rgnr < cpu->pmsav7_dregion;
154}
155
156static const VMStateDescription vmstate_pmsav7 = {
157 .name = "cpu/pmsav7",
158 .version_id = 1,
159 .minimum_version_id = 1,
160 .needed = pmsav7_needed,
161 .fields = (VMStateField[]) {
162 VMSTATE_VARRAY_UINT32(env.pmsav7.drbar, ARMCPU, pmsav7_dregion, 0,
163 vmstate_info_uint32, uint32_t),
164 VMSTATE_VARRAY_UINT32(env.pmsav7.drsr, ARMCPU, pmsav7_dregion, 0,
165 vmstate_info_uint32, uint32_t),
166 VMSTATE_VARRAY_UINT32(env.pmsav7.dracr, ARMCPU, pmsav7_dregion, 0,
167 vmstate_info_uint32, uint32_t),
168 VMSTATE_VALIDATE("rgnr is valid", pmsav7_rgnr_vmstate_validate),
169 VMSTATE_END_OF_LIST()
170 }
171};
172
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173static int get_cpsr(QEMUFile *f, void *opaque, size_t size,
174 VMStateField *field)
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175{
176 ARMCPU *cpu = opaque;
177 CPUARMState *env = &cpu->env;
178 uint32_t val = qemu_get_be32(f);
179
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180 env->aarch64 = ((val & PSTATE_nRW) == 0);
181
182 if (is_a64(env)) {
183 pstate_write(env, val);
184 return 0;
185 }
186
50866ba5 187 cpsr_write(env, val, 0xffffffff, CPSRWriteRaw);
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188 return 0;
189}
8dd3dca3 190
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191static int put_cpsr(QEMUFile *f, void *opaque, size_t size,
192 VMStateField *field, QJSON *vmdesc)
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193{
194 ARMCPU *cpu = opaque;
195 CPUARMState *env = &cpu->env;
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196 uint32_t val;
197
198 if (is_a64(env)) {
199 val = pstate_read(env);
200 } else {
201 val = cpsr_read(env);
202 }
8dd3dca3 203
a7130a3e 204 qemu_put_be32(f, val);
2c21ee76 205 return 0;
3cc1d208 206}
8dd3dca3 207
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208static const VMStateInfo vmstate_cpsr = {
209 .name = "cpsr",
210 .get = get_cpsr,
211 .put = put_cpsr,
212};
213
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214static void cpu_pre_save(void *opaque)
215{
216 ARMCPU *cpu = opaque;
217
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218 if (kvm_enabled()) {
219 if (!write_kvmstate_to_list(cpu)) {
220 /* This should never fail */
221 abort();
222 }
223 } else {
224 if (!write_cpustate_to_list(cpu)) {
225 /* This should never fail. */
226 abort();
227 }
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228 }
229
230 cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len;
231 memcpy(cpu->cpreg_vmstate_indexes, cpu->cpreg_indexes,
232 cpu->cpreg_array_len * sizeof(uint64_t));
233 memcpy(cpu->cpreg_vmstate_values, cpu->cpreg_values,
234 cpu->cpreg_array_len * sizeof(uint64_t));
235}
236
237static int cpu_post_load(void *opaque, int version_id)
238{
239 ARMCPU *cpu = opaque;
240 int i, v;
241
242 /* Update the values list from the incoming migration data.
243 * Anything in the incoming data which we don't know about is
244 * a migration failure; anything we know about but the incoming
245 * data doesn't specify retains its current (reset) value.
246 * The indexes list remains untouched -- we only inspect the
247 * incoming migration index list so we can match the values array
248 * entries with the right slots in our own values array.
249 */
250
251 for (i = 0, v = 0; i < cpu->cpreg_array_len
252 && v < cpu->cpreg_vmstate_array_len; i++) {
253 if (cpu->cpreg_vmstate_indexes[v] > cpu->cpreg_indexes[i]) {
254 /* register in our list but not incoming : skip it */
255 continue;
256 }
257 if (cpu->cpreg_vmstate_indexes[v] < cpu->cpreg_indexes[i]) {
258 /* register in their list but not ours: fail migration */
259 return -1;
260 }
261 /* matching register, copy the value over */
262 cpu->cpreg_values[i] = cpu->cpreg_vmstate_values[v];
263 v++;
264 }
265
ff047453 266 if (kvm_enabled()) {
4b7a6bf4 267 if (!write_list_to_kvmstate(cpu, KVM_PUT_FULL_STATE)) {
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268 return -1;
269 }
270 /* Note that it's OK for the TCG side not to know about
271 * every register in the list; KVM is authoritative if
272 * we're using it.
273 */
274 write_list_to_cpustate(cpu);
275 } else {
276 if (!write_list_to_cpustate(cpu)) {
277 return -1;
278 }
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279 }
280
46747d15 281 hw_breakpoint_update_all(cpu);
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282 hw_watchpoint_update_all(cpu);
283
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284 return 0;
285}
286
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287const VMStateDescription vmstate_arm_cpu = {
288 .name = "cpu",
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289 .version_id = 22,
290 .minimum_version_id = 22,
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291 .pre_save = cpu_pre_save,
292 .post_load = cpu_post_load,
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293 .fields = (VMStateField[]) {
294 VMSTATE_UINT32_ARRAY(env.regs, ARMCPU, 16),
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295 VMSTATE_UINT64_ARRAY(env.xregs, ARMCPU, 32),
296 VMSTATE_UINT64(env.pc, ARMCPU),
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297 {
298 .name = "cpsr",
299 .version_id = 0,
300 .size = sizeof(uint32_t),
301 .info = &vmstate_cpsr,
302 .flags = VMS_SINGLE,
303 .offset = 0,
304 },
305 VMSTATE_UINT32(env.spsr, ARMCPU),
28c9457d 306 VMSTATE_UINT64_ARRAY(env.banked_spsr, ARMCPU, 8),
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307 VMSTATE_UINT32_ARRAY(env.banked_r13, ARMCPU, 8),
308 VMSTATE_UINT32_ARRAY(env.banked_r14, ARMCPU, 8),
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309 VMSTATE_UINT32_ARRAY(env.usr_regs, ARMCPU, 5),
310 VMSTATE_UINT32_ARRAY(env.fiq_regs, ARMCPU, 5),
1b174238 311 VMSTATE_UINT64_ARRAY(env.elr_el, ARMCPU, 4),
73fb3b76 312 VMSTATE_UINT64_ARRAY(env.sp_el, ARMCPU, 4),
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313 /* The length-check must come before the arrays to avoid
314 * incoming data possibly overflowing the array.
315 */
3476436a 316 VMSTATE_INT32_POSITIVE_LE(cpreg_vmstate_array_len, ARMCPU),
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317 VMSTATE_VARRAY_INT32(cpreg_vmstate_indexes, ARMCPU,
318 cpreg_vmstate_array_len,
319 0, vmstate_info_uint64, uint64_t),
320 VMSTATE_VARRAY_INT32(cpreg_vmstate_values, ARMCPU,
321 cpreg_vmstate_array_len,
322 0, vmstate_info_uint64, uint64_t),
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323 VMSTATE_UINT64(env.exclusive_addr, ARMCPU),
324 VMSTATE_UINT64(env.exclusive_val, ARMCPU),
325 VMSTATE_UINT64(env.exclusive_high, ARMCPU),
3cc1d208 326 VMSTATE_UINT64(env.features, ARMCPU),
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327 VMSTATE_UINT32(env.exception.syndrome, ARMCPU),
328 VMSTATE_UINT32(env.exception.fsr, ARMCPU),
329 VMSTATE_UINT64(env.exception.vaddress, ARMCPU),
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330 VMSTATE_TIMER_PTR(gt_timer[GTIMER_PHYS], ARMCPU),
331 VMSTATE_TIMER_PTR(gt_timer[GTIMER_VIRT], ARMCPU),
543486db 332 VMSTATE_BOOL(powered_off, ARMCPU),
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333 VMSTATE_END_OF_LIST()
334 },
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335 .subsections = (const VMStateDescription*[]) {
336 &vmstate_vfp,
337 &vmstate_iwmmxt,
338 &vmstate_m,
339 &vmstate_thumb2ee,
6cb0b013 340 &vmstate_pmsav7,
5cd8cada 341 NULL
ffe47d33 342 }
3cc1d208 343};
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