[qemu.git] / target / arm / machine.c

#include "qemu/osdep.h"
#include "qemu-common.h"
#include "cpu.h"
#include "hw/hw.h"
#include "hw/boards.h"
#include "qemu/error-report.h"
#include "sysemu/kvm.h"
#include "kvm_arm.h"
#include "internals.h"
#include "migration/cpu.h"

static bool vfp_needed(void *opaque)
{
    ARMCPU *cpu = opaque;
    CPUARMState *env = &cpu->env;

    return arm_feature(env, ARM_FEATURE_VFP);
}

static int get_fpscr(QEMUFile *f, void *opaque, size_t size,
                     VMStateField *field)
{
    ARMCPU *cpu = opaque;
    CPUARMState *env = &cpu->env;
    uint32_t val = qemu_get_be32(f);

    vfp_set_fpscr(env, val);
    return 0;
}

static int put_fpscr(QEMUFile *f, void *opaque, size_t size,
                     VMStateField *field, QJSON *vmdesc)
{
    ARMCPU *cpu = opaque;
    CPUARMState *env = &cpu->env;

    qemu_put_be32(f, vfp_get_fpscr(env));
    return 0;
}

static const VMStateInfo vmstate_fpscr = {
    .name = "fpscr",
    .get = get_fpscr,
    .put = put_fpscr,
};

static const VMStateDescription vmstate_vfp = {
    .name = "cpu/vfp",
    .version_id = 3,
    .minimum_version_id = 3,
    .needed = vfp_needed,
    .fields = (VMStateField[]) {
        VMSTATE_FLOAT64_ARRAY(env.vfp.regs, ARMCPU, 64),
        /* The xregs array is a little awkward because element 1 (FPSCR)
         * requires a specific accessor, so we have to split it up in
         * the vmstate:
         */
        VMSTATE_UINT32(env.vfp.xregs[0], ARMCPU),
        VMSTATE_UINT32_SUB_ARRAY(env.vfp.xregs, ARMCPU, 2, 14),
        {
            .name = "fpscr",
            .version_id = 0,
            .size = sizeof(uint32_t),
            .info = &vmstate_fpscr,
            .flags = VMS_SINGLE,
            .offset = 0,
        },
        VMSTATE_END_OF_LIST()
    }
};

static bool iwmmxt_needed(void *opaque)
{
    ARMCPU *cpu = opaque;
    CPUARMState *env = &cpu->env;

    return arm_feature(env, ARM_FEATURE_IWMMXT);
}

static const VMStateDescription vmstate_iwmmxt = {
    .name = "cpu/iwmmxt",
    .version_id = 1,
    .minimum_version_id = 1,
    .needed = iwmmxt_needed,
    .fields = (VMStateField[]) {
        VMSTATE_UINT64_ARRAY(env.iwmmxt.regs, ARMCPU, 16),
        VMSTATE_UINT32_ARRAY(env.iwmmxt.cregs, ARMCPU, 16),
        VMSTATE_END_OF_LIST()
    }
};

static bool m_needed(void *opaque)
{
    ARMCPU *cpu = opaque;
    CPUARMState *env = &cpu->env;

    return arm_feature(env, ARM_FEATURE_M);
}

static const VMStateDescription vmstate_m = {
    .name = "cpu/m",
    .version_id = 3,
    .minimum_version_id = 3,
    .needed = m_needed,
    .fields = (VMStateField[]) {
        VMSTATE_UINT32(env.v7m.vecbase, ARMCPU),
        VMSTATE_UINT32(env.v7m.basepri, ARMCPU),
        VMSTATE_UINT32(env.v7m.control, ARMCPU),
        VMSTATE_UINT32(env.v7m.ccr, ARMCPU),
        VMSTATE_UINT32(env.v7m.cfsr, ARMCPU),
        VMSTATE_UINT32(env.v7m.hfsr, ARMCPU),
        VMSTATE_UINT32(env.v7m.dfsr, ARMCPU),
        VMSTATE_UINT32(env.v7m.mmfar, ARMCPU),
        VMSTATE_UINT32(env.v7m.bfar, ARMCPU),
        VMSTATE_INT32(env.v7m.exception, ARMCPU),
        VMSTATE_END_OF_LIST()
    }
};

static bool thumb2ee_needed(void *opaque)
{
    ARMCPU *cpu = opaque;
    CPUARMState *env = &cpu->env;

    return arm_feature(env, ARM_FEATURE_THUMB2EE);
}

static const VMStateDescription vmstate_thumb2ee = {
    .name = "cpu/thumb2ee",
    .version_id = 1,
    .minimum_version_id = 1,
    .needed = thumb2ee_needed,
    .fields = (VMStateField[]) {
        VMSTATE_UINT32(env.teecr, ARMCPU),
        VMSTATE_UINT32(env.teehbr, ARMCPU),
        VMSTATE_END_OF_LIST()
    }
};

static bool pmsav7_needed(void *opaque)
{
    ARMCPU *cpu = opaque;
    CPUARMState *env = &cpu->env;

    return arm_feature(env, ARM_FEATURE_PMSA) &&
           arm_feature(env, ARM_FEATURE_V7);
}

static bool pmsav7_rgnr_vmstate_validate(void *opaque, int version_id)
{
    ARMCPU *cpu = opaque;

    return cpu->env.cp15.c6_rgnr < cpu->pmsav7_dregion;
}

static const VMStateDescription vmstate_pmsav7 = {
    .name = "cpu/pmsav7",
    .version_id = 1,
    .minimum_version_id = 1,
    .needed = pmsav7_needed,
    .fields = (VMStateField[]) {
        VMSTATE_VARRAY_UINT32(env.pmsav7.drbar, ARMCPU, pmsav7_dregion, 0,
                              vmstate_info_uint32, uint32_t),
        VMSTATE_VARRAY_UINT32(env.pmsav7.drsr, ARMCPU, pmsav7_dregion, 0,
                              vmstate_info_uint32, uint32_t),
        VMSTATE_VARRAY_UINT32(env.pmsav7.dracr, ARMCPU, pmsav7_dregion, 0,
                              vmstate_info_uint32, uint32_t),
        VMSTATE_VALIDATE("rgnr is valid", pmsav7_rgnr_vmstate_validate),
        VMSTATE_END_OF_LIST()
    }
};

static int get_cpsr(QEMUFile *f, void *opaque, size_t size,
                    VMStateField *field)
{
    ARMCPU *cpu = opaque;
    CPUARMState *env = &cpu->env;
    uint32_t val = qemu_get_be32(f);

    env->aarch64 = ((val & PSTATE_nRW) == 0);

    if (is_a64(env)) {
        pstate_write(env, val);
        return 0;
    }

    cpsr_write(env, val, 0xffffffff, CPSRWriteRaw);
    return 0;
}

static int put_cpsr(QEMUFile *f, void *opaque, size_t size,
                    VMStateField *field, QJSON *vmdesc)
{
    ARMCPU *cpu = opaque;
    CPUARMState *env = &cpu->env;
    uint32_t val;

    if (is_a64(env)) {
        val = pstate_read(env);
    } else {
        val = cpsr_read(env);
    }

    qemu_put_be32(f, val);
    return 0;
}

static const VMStateInfo vmstate_cpsr = {
    .name = "cpsr",
    .get = get_cpsr,
    .put = put_cpsr,
};

static int get_power(QEMUFile *f, void *opaque, size_t size,
                    VMStateField *field)
{
    ARMCPU *cpu = opaque;
    bool powered_off = qemu_get_byte(f);
    cpu->power_state = powered_off ? PSCI_OFF : PSCI_ON;
    return 0;
}

static int put_power(QEMUFile *f, void *opaque, size_t size,
                    VMStateField *field, QJSON *vmdesc)
{
    ARMCPU *cpu = opaque;

    /* Migration should never happen while we transition power states */

    if (cpu->power_state == PSCI_ON ||
        cpu->power_state == PSCI_OFF) {
        bool powered_off = (cpu->power_state == PSCI_OFF) ? true : false;
        qemu_put_byte(f, powered_off);
        return 0;
    } else {
        return 1;
    }
}

static const VMStateInfo vmstate_powered_off = {
    .name = "powered_off",
    .get = get_power,
    .put = put_power,
};

static void cpu_pre_save(void *opaque)
{
    ARMCPU *cpu = opaque;

    if (kvm_enabled()) {
        if (!write_kvmstate_to_list(cpu)) {
            /* This should never fail */
            abort();
        }
    } else {
        if (!write_cpustate_to_list(cpu)) {
            /* This should never fail. */
            abort();
        }
    }

    cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len;
    memcpy(cpu->cpreg_vmstate_indexes, cpu->cpreg_indexes,
           cpu->cpreg_array_len * sizeof(uint64_t));
    memcpy(cpu->cpreg_vmstate_values, cpu->cpreg_values,
           cpu->cpreg_array_len * sizeof(uint64_t));
}

static int cpu_post_load(void *opaque, int version_id)
{
    ARMCPU *cpu = opaque;
    int i, v;

    /* Update the values list from the incoming migration data.
     * Anything in the incoming data which we don't know about is
     * a migration failure; anything we know about but the incoming
     * data doesn't specify retains its current (reset) value.
     * The indexes list remains untouched -- we only inspect the
     * incoming migration index list so we can match the values array
     * entries with the right slots in our own values array.
     */

    for (i = 0, v = 0; i < cpu->cpreg_array_len
             && v < cpu->cpreg_vmstate_array_len; i++) {
        if (cpu->cpreg_vmstate_indexes[v] > cpu->cpreg_indexes[i]) {
            /* register in our list but not incoming : skip it */
            continue;
        }
        if (cpu->cpreg_vmstate_indexes[v] < cpu->cpreg_indexes[i]) {
            /* register in their list but not ours: fail migration */
            return -1;
        }
        /* matching register, copy the value over */
        cpu->cpreg_values[i] = cpu->cpreg_vmstate_values[v];
        v++;
    }

    if (kvm_enabled()) {
        if (!write_list_to_kvmstate(cpu, KVM_PUT_FULL_STATE)) {
            return -1;
        }
        /* Note that it's OK for the TCG side not to know about
         * every register in the list; KVM is authoritative if
         * we're using it.
         */
        write_list_to_cpustate(cpu);
    } else {
        if (!write_list_to_cpustate(cpu)) {
            return -1;
        }
    }

    hw_breakpoint_update_all(cpu);
    hw_watchpoint_update_all(cpu);

    return 0;
}

const VMStateDescription vmstate_arm_cpu = {
    .name = "cpu",
    .version_id = 22,
    .minimum_version_id = 22,
    .pre_save = cpu_pre_save,
    .post_load = cpu_post_load,
    .fields = (VMStateField[]) {
        VMSTATE_UINT32_ARRAY(env.regs, ARMCPU, 16),
        VMSTATE_UINT64_ARRAY(env.xregs, ARMCPU, 32),
        VMSTATE_UINT64(env.pc, ARMCPU),
        {
            .name = "cpsr",
            .version_id = 0,
            .size = sizeof(uint32_t),
            .info = &vmstate_cpsr,
            .flags = VMS_SINGLE,
            .offset = 0,
        },
        VMSTATE_UINT32(env.spsr, ARMCPU),
        VMSTATE_UINT64_ARRAY(env.banked_spsr, ARMCPU, 8),
        VMSTATE_UINT32_ARRAY(env.banked_r13, ARMCPU, 8),
        VMSTATE_UINT32_ARRAY(env.banked_r14, ARMCPU, 8),
        VMSTATE_UINT32_ARRAY(env.usr_regs, ARMCPU, 5),
        VMSTATE_UINT32_ARRAY(env.fiq_regs, ARMCPU, 5),
        VMSTATE_UINT64_ARRAY(env.elr_el, ARMCPU, 4),
        VMSTATE_UINT64_ARRAY(env.sp_el, ARMCPU, 4),
        /* The length-check must come before the arrays to avoid
         * incoming data possibly overflowing the array.
         */
        VMSTATE_INT32_POSITIVE_LE(cpreg_vmstate_array_len, ARMCPU),
        VMSTATE_VARRAY_INT32(cpreg_vmstate_indexes, ARMCPU,
                             cpreg_vmstate_array_len,
                             0, vmstate_info_uint64, uint64_t),
        VMSTATE_VARRAY_INT32(cpreg_vmstate_values, ARMCPU,
                             cpreg_vmstate_array_len,
                             0, vmstate_info_uint64, uint64_t),
        VMSTATE_UINT64(env.exclusive_addr, ARMCPU),
        VMSTATE_UINT64(env.exclusive_val, ARMCPU),
        VMSTATE_UINT64(env.exclusive_high, ARMCPU),
        VMSTATE_UINT64(env.features, ARMCPU),
        VMSTATE_UINT32(env.exception.syndrome, ARMCPU),
        VMSTATE_UINT32(env.exception.fsr, ARMCPU),
        VMSTATE_UINT64(env.exception.vaddress, ARMCPU),
        VMSTATE_TIMER_PTR(gt_timer[GTIMER_PHYS], ARMCPU),
        VMSTATE_TIMER_PTR(gt_timer[GTIMER_VIRT], ARMCPU),
        {
            .name = "power_state",
            .version_id = 0,
            .size = sizeof(bool),
            .info = &vmstate_powered_off,
            .flags = VMS_SINGLE,
            .offset = 0,
        },
        VMSTATE_END_OF_LIST()
    },
    .subsections = (const VMStateDescription*[]) {
        &vmstate_vfp,
        &vmstate_iwmmxt,
        &vmstate_m,
        &vmstate_thumb2ee,
        &vmstate_pmsav7,
        NULL
    }
};
Commit	Line	Data
74c21bd0	1	#include "qemu/osdep.h"
33c11879 PB	2	#include "qemu-common.h"
33c11879 PB	3	#include "cpu.h"
8dd3dca3 AJ	4	#include "hw/hw.h"
8dd3dca3 AJ	5	#include "hw/boards.h"
a7bf3034	6	#include "qemu/error-report.h"
ff047453 PM	7	#include "sysemu/kvm.h"
ff047453 PM	8	#include "kvm_arm.h"
9ee98ce8	9	#include "internals.h"
1e00b8d5	10	#include "migration/cpu.h"
8dd3dca3	11
3cc1d208	12	static bool vfp_needed(void *opaque)
8dd3dca3	13	{
3cc1d208 JQ	14	ARMCPU *cpu = opaque;
3cc1d208 JQ	15	CPUARMState *env = &cpu->env;
8dd3dca3	16
3cc1d208 JQ	17	return arm_feature(env, ARM_FEATURE_VFP);
3cc1d208 JQ	18	}
8dd3dca3	19
2c21ee76 JD	20	static int get_fpscr(QEMUFile f, void opaque, size_t size,
2c21ee76 JD	21	VMStateField *field)
e91f229a PM	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
2c21ee76 JD	31	static int put_fpscr(QEMUFile f, void opaque, size_t size,
2c21ee76 JD	32	VMStateField field, QJSON vmdesc)
e91f229a PM	33	{
	34	ARMCPU *cpu = opaque;
	35	CPUARMState *env = &cpu->env;
	36
	37	qemu_put_be32(f, vfp_get_fpscr(env));
2c21ee76	38	return 0;
e91f229a PM	39	}
	40
	41	static const VMStateInfo vmstate_fpscr = {
	42	.name = "fpscr",
	43	.get = get_fpscr,
	44	.put = put_fpscr,
	45	};
	46
3cc1d208 JQ	47	static const VMStateDescription vmstate_vfp = {
3cc1d208 JQ	48	.name = "cpu/vfp",
3926cc84 AG	49	.version_id = 3,
3926cc84 AG	50	.minimum_version_id = 3,
5cd8cada	51	.needed = vfp_needed,
3cc1d208	52	.fields = (VMStateField[]) {
3926cc84	53	VMSTATE_FLOAT64_ARRAY(env.vfp.regs, ARMCPU, 64),
e91f229a PM	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
3cc1d208 JQ	72	static bool iwmmxt_needed(void *opaque)
	73	{
	74	ARMCPU *cpu = opaque;
	75	CPUARMState *env = &cpu->env;
8dd3dca3	76
3cc1d208 JQ	77	return arm_feature(env, ARM_FEATURE_IWMMXT);
3cc1d208 JQ	78	}
ffe47d33	79
3cc1d208 JQ	80	static const VMStateDescription vmstate_iwmmxt = {
	81	.name = "cpu/iwmmxt",
	82	.version_id = 1,
	83	.minimum_version_id = 1,
5cd8cada	84	.needed = iwmmxt_needed,
3cc1d208 JQ	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	}
3cc1d208 JQ	90	};
	91
	92	static bool m_needed(void *opaque)
	93	{
	94	ARMCPU *cpu = opaque;
	95	CPUARMState *env = &cpu->env;
	96
	97	return arm_feature(env, ARM_FEATURE_M);
8dd3dca3 AJ	98	}
8dd3dca3 AJ	99
6df05bdd	100	static const VMStateDescription vmstate_m = {
3cc1d208	101	.name = "cpu/m",
2c4da50d PM	102	.version_id = 3,
2c4da50d PM	103	.minimum_version_id = 3,
5cd8cada	104	.needed = m_needed,
3cc1d208	105	.fields = (VMStateField[]) {
3cc1d208 JQ	106	VMSTATE_UINT32(env.v7m.vecbase, ARMCPU),
	107	VMSTATE_UINT32(env.v7m.basepri, ARMCPU),
	108	VMSTATE_UINT32(env.v7m.control, ARMCPU),
2c4da50d PM	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),
3cc1d208 JQ	115	VMSTATE_INT32(env.v7m.exception, ARMCPU),
	116	VMSTATE_END_OF_LIST()
	117	}
	118	};
	119
	120	static bool thumb2ee_needed(void *opaque)
8dd3dca3	121	{
3cc1d208 JQ	122	ARMCPU *cpu = opaque;
3cc1d208 JQ	123	CPUARMState *env = &cpu->env;
8dd3dca3	124
3cc1d208 JQ	125	return arm_feature(env, ARM_FEATURE_THUMB2EE);
3cc1d208 JQ	126	}
8dd3dca3	127
3cc1d208 JQ	128	static const VMStateDescription vmstate_thumb2ee = {
	129	.name = "cpu/thumb2ee",
	130	.version_id = 1,
	131	.minimum_version_id = 1,
5cd8cada	132	.needed = thumb2ee_needed,
3cc1d208 JQ	133	.fields = (VMStateField[]) {
	134	VMSTATE_UINT32(env.teecr, ARMCPU),
	135	VMSTATE_UINT32(env.teehbr, ARMCPU),
	136	VMSTATE_END_OF_LIST()
8dd3dca3	137	}
3cc1d208 JQ	138	};
3cc1d208 JQ	139
6cb0b013 PC	140	static bool pmsav7_needed(void *opaque)
	141	{
	142	ARMCPU *cpu = opaque;
	143	CPUARMState *env = &cpu->env;
	144
452a0955	145	return arm_feature(env, ARM_FEATURE_PMSA) &&
6cb0b013 PC	146	arm_feature(env, ARM_FEATURE_V7);
	147	}
	148
	149	static 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
	156	static 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
2c21ee76 JD	173	static int get_cpsr(QEMUFile f, void opaque, size_t size,
2c21ee76 JD	174	VMStateField *field)
3cc1d208 JQ	175	{
	176	ARMCPU *cpu = opaque;
	177	CPUARMState *env = &cpu->env;
	178	uint32_t val = qemu_get_be32(f);
	179
a7130a3e PM	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);
3cc1d208 JQ	188	return 0;
3cc1d208 JQ	189	}
8dd3dca3	190
2c21ee76 JD	191	static int put_cpsr(QEMUFile f, void opaque, size_t size,
2c21ee76 JD	192	VMStateField field, QJSON vmdesc)
3cc1d208 JQ	193	{
	194	ARMCPU *cpu = opaque;
	195	CPUARMState *env = &cpu->env;
a7130a3e PM	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
3cc1d208 JQ	208	static const VMStateInfo vmstate_cpsr = {
	209	.name = "cpsr",
	210	.get = get_cpsr,
	211	.put = put_cpsr,
	212	};
	213
062ba099 AB	214	static int get_power(QEMUFile f, void opaque, size_t size,
	215	VMStateField *field)
	216	{
	217	ARMCPU *cpu = opaque;
	218	bool powered_off = qemu_get_byte(f);
	219	cpu->power_state = powered_off ? PSCI_OFF : PSCI_ON;
	220	return 0;
	221	}
	222
	223	static int put_power(QEMUFile f, void opaque, size_t size,
	224	VMStateField field, QJSON vmdesc)
	225	{
	226	ARMCPU *cpu = opaque;
	227
	228	/* Migration should never happen while we transition power states */
	229
	230	if (cpu->power_state == PSCI_ON \|\|
	231	cpu->power_state == PSCI_OFF) {
	232	bool powered_off = (cpu->power_state == PSCI_OFF) ? true : false;
	233	qemu_put_byte(f, powered_off);
	234	return 0;
	235	} else {
	236	return 1;
	237	}
	238	}
	239
	240	static const VMStateInfo vmstate_powered_off = {
	241	.name = "powered_off",
	242	.get = get_power,
	243	.put = put_power,
	244	};
	245
721fae12 PM	246	static void cpu_pre_save(void *opaque)
	247	{
	248	ARMCPU *cpu = opaque;
	249
ff047453 PM	250	if (kvm_enabled()) {
	251	if (!write_kvmstate_to_list(cpu)) {
	252	/* This should never fail */
	253	abort();
	254	}
	255	} else {
	256	if (!write_cpustate_to_list(cpu)) {
	257	/* This should never fail. */
	258	abort();
	259	}
721fae12 PM	260	}
	261
	262	cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len;
	263	memcpy(cpu->cpreg_vmstate_indexes, cpu->cpreg_indexes,
	264	cpu->cpreg_array_len * sizeof(uint64_t));
	265	memcpy(cpu->cpreg_vmstate_values, cpu->cpreg_values,
	266	cpu->cpreg_array_len * sizeof(uint64_t));
	267	}
	268
	269	static int cpu_post_load(void *opaque, int version_id)
	270	{
	271	ARMCPU *cpu = opaque;
	272	int i, v;
	273
	274	/* Update the values list from the incoming migration data.
	275	* Anything in the incoming data which we don't know about is
	276	* a migration failure; anything we know about but the incoming
	277	* data doesn't specify retains its current (reset) value.
	278	* The indexes list remains untouched -- we only inspect the
	279	* incoming migration index list so we can match the values array
	280	* entries with the right slots in our own values array.
	281	*/
	282
	283	for (i = 0, v = 0; i < cpu->cpreg_array_len
	284	&& v < cpu->cpreg_vmstate_array_len; i++) {
	285	if (cpu->cpreg_vmstate_indexes[v] > cpu->cpreg_indexes[i]) {
	286	/* register in our list but not incoming : skip it */
	287	continue;
	288	}
	289	if (cpu->cpreg_vmstate_indexes[v] < cpu->cpreg_indexes[i]) {
	290	/* register in their list but not ours: fail migration */
	291	return -1;
	292	}
	293	/* matching register, copy the value over */
	294	cpu->cpreg_values[i] = cpu->cpreg_vmstate_values[v];
	295	v++;
	296	}
	297
ff047453	298	if (kvm_enabled()) {
4b7a6bf4	299	if (!write_list_to_kvmstate(cpu, KVM_PUT_FULL_STATE)) {
ff047453 PM	300	return -1;
	301	}
	302	/* Note that it's OK for the TCG side not to know about
	303	* every register in the list; KVM is authoritative if
	304	* we're using it.
	305	*/
	306	write_list_to_cpustate(cpu);
	307	} else {
	308	if (!write_list_to_cpustate(cpu)) {
	309	return -1;
	310	}
721fae12 PM	311	}
721fae12 PM	312
46747d15	313	hw_breakpoint_update_all(cpu);
9ee98ce8 PM	314	hw_watchpoint_update_all(cpu);
9ee98ce8 PM	315
721fae12 PM	316	return 0;
	317	}
	318
3cc1d208 JQ	319	const VMStateDescription vmstate_arm_cpu = {
3cc1d208 JQ	320	.name = "cpu",
a7130a3e PM	321	.version_id = 22,
a7130a3e PM	322	.minimum_version_id = 22,
721fae12 PM	323	.pre_save = cpu_pre_save,
721fae12 PM	324	.post_load = cpu_post_load,
3cc1d208 JQ	325	.fields = (VMStateField[]) {
3cc1d208 JQ	326	VMSTATE_UINT32_ARRAY(env.regs, ARMCPU, 16),
a7130a3e PM	327	VMSTATE_UINT64_ARRAY(env.xregs, ARMCPU, 32),
a7130a3e PM	328	VMSTATE_UINT64(env.pc, ARMCPU),
3cc1d208 JQ	329	{
	330	.name = "cpsr",
	331	.version_id = 0,
	332	.size = sizeof(uint32_t),
	333	.info = &vmstate_cpsr,
	334	.flags = VMS_SINGLE,
	335	.offset = 0,
	336	},
	337	VMSTATE_UINT32(env.spsr, ARMCPU),
28c9457d	338	VMSTATE_UINT64_ARRAY(env.banked_spsr, ARMCPU, 8),
0b7d409d FA	339	VMSTATE_UINT32_ARRAY(env.banked_r13, ARMCPU, 8),
0b7d409d FA	340	VMSTATE_UINT32_ARRAY(env.banked_r14, ARMCPU, 8),
3cc1d208 JQ	341	VMSTATE_UINT32_ARRAY(env.usr_regs, ARMCPU, 5),
3cc1d208 JQ	342	VMSTATE_UINT32_ARRAY(env.fiq_regs, ARMCPU, 5),
1b174238	343	VMSTATE_UINT64_ARRAY(env.elr_el, ARMCPU, 4),
73fb3b76	344	VMSTATE_UINT64_ARRAY(env.sp_el, ARMCPU, 4),
721fae12 PM	345	/* The length-check must come before the arrays to avoid
	346	* incoming data possibly overflowing the array.
	347	*/
3476436a	348	VMSTATE_INT32_POSITIVE_LE(cpreg_vmstate_array_len, ARMCPU),
721fae12 PM	349	VMSTATE_VARRAY_INT32(cpreg_vmstate_indexes, ARMCPU,
	350	cpreg_vmstate_array_len,
	351	0, vmstate_info_uint64, uint64_t),
	352	VMSTATE_VARRAY_INT32(cpreg_vmstate_values, ARMCPU,
	353	cpreg_vmstate_array_len,
	354	0, vmstate_info_uint64, uint64_t),
03d05e2d PM	355	VMSTATE_UINT64(env.exclusive_addr, ARMCPU),
	356	VMSTATE_UINT64(env.exclusive_val, ARMCPU),
	357	VMSTATE_UINT64(env.exclusive_high, ARMCPU),
3cc1d208	358	VMSTATE_UINT64(env.features, ARMCPU),
abf1172f PM	359	VMSTATE_UINT32(env.exception.syndrome, ARMCPU),
	360	VMSTATE_UINT32(env.exception.fsr, ARMCPU),
	361	VMSTATE_UINT64(env.exception.vaddress, ARMCPU),
e720677e PB	362	VMSTATE_TIMER_PTR(gt_timer[GTIMER_PHYS], ARMCPU),
e720677e PB	363	VMSTATE_TIMER_PTR(gt_timer[GTIMER_VIRT], ARMCPU),
062ba099 AB	364	{
	365	.name = "power_state",
	366	.version_id = 0,
	367	.size = sizeof(bool),
	368	.info = &vmstate_powered_off,
	369	.flags = VMS_SINGLE,
	370	.offset = 0,
	371	},
3cc1d208 JQ	372	VMSTATE_END_OF_LIST()
3cc1d208 JQ	373	},
5cd8cada JQ	374	.subsections = (const VMStateDescription*[]) {
	375	&vmstate_vfp,
	376	&vmstate_iwmmxt,
	377	&vmstate_m,
	378	&vmstate_thumb2ee,
6cb0b013	379	&vmstate_pmsav7,
5cd8cada	380	NULL
ffe47d33	381	}
3cc1d208	382	};