target-i386/machine.c - qemu - Git at Google

 #include "hw/hw.h"
 #include "hw/boards.h"
 #include "hw/pc.h"
 #include "hw/isa.h"

 #include "exec-all.h"
 #include "kvm.h"

 static const VMStateDescription vmstate_segment = {
     .name = "segment",
     .version_id = 1,
     .minimum_version_id = 1,
     .minimum_version_id_old = 1,
     .fields      = (VMStateField []) {
         VMSTATE_UINT32(selector, SegmentCache),
         VMSTATE_UINTTL(base, SegmentCache),
         VMSTATE_UINT32(limit, SegmentCache),
         VMSTATE_UINT32(flags, SegmentCache),
         VMSTATE_END_OF_LIST()
     }
 };

 #define VMSTATE_SEGMENT(_field, _state) {                            \
     .name       = (stringify(_field)),                               \
     .size       = sizeof(SegmentCache),                              \
     .vmsd       = &vmstate_segment,                                  \
     .flags      = VMS_STRUCT,                                        \
     .offset     = offsetof(_state, _field)                           \
             + type_check(SegmentCache,typeof_field(_state, _field))  \
 }

 #define VMSTATE_SEGMENT_ARRAY(_field, _state, _n)                    \
     VMSTATE_STRUCT_ARRAY(_field, _state, _n, 0, vmstate_segment, SegmentCache)

 static const VMStateDescription vmstate_xmm_reg = {
     .name = "xmm_reg",
     .version_id = 1,
     .minimum_version_id = 1,
     .minimum_version_id_old = 1,
     .fields      = (VMStateField []) {
         VMSTATE_UINT64(XMM_Q(0), XMMReg),
         VMSTATE_UINT64(XMM_Q(1), XMMReg),
         VMSTATE_END_OF_LIST()
     }
 };

 #define VMSTATE_XMM_REGS(_field, _state, _n)                         \
     VMSTATE_STRUCT_ARRAY(_field, _state, _n, 0, vmstate_xmm_reg, XMMReg)

 static const VMStateDescription vmstate_mtrr_var = {
     .name = "mtrr_var",
     .version_id = 1,
     .minimum_version_id = 1,
     .minimum_version_id_old = 1,
     .fields      = (VMStateField []) {
         VMSTATE_UINT64(base, MTRRVar),
         VMSTATE_UINT64(mask, MTRRVar),
         VMSTATE_END_OF_LIST()
     }
 };

 #define VMSTATE_MTRR_VARS(_field, _state, _n, _v)                    \
     VMSTATE_STRUCT_ARRAY(_field, _state, _n, _v, vmstate_mtrr_var, MTRRVar)

 static void put_fpreg_error(QEMUFile *f, void *opaque, size_t size)
 {
     fprintf(stderr, "call put_fpreg() with invalid arguments\n");
     exit(0);
 }

 #ifdef USE_X86LDOUBLE
 /* XXX: add that in a FPU generic layer */
 union x86_longdouble {
     uint64_t mant;
     uint16_t exp;
 };

 #define MANTD1(fp)	(fp & ((1LL << 52) - 1))
 #define EXPBIAS1 1023
 #define EXPD1(fp)	((fp >> 52) & 0x7FF)
 #define SIGND1(fp)	((fp >> 32) & 0x80000000)

 static void fp64_to_fp80(union x86_longdouble *p, uint64_t temp)
 {
     int e;
     /* mantissa */
     p->mant = (MANTD1(temp) << 11) | (1LL << 63);
     /* exponent + sign */
     e = EXPD1(temp) - EXPBIAS1 + 16383;
     e |= SIGND1(temp) >> 16;
     p->exp = e;
 }

 static int get_fpreg(QEMUFile *f, void *opaque, size_t size)
 {
     FPReg *fp_reg = opaque;
     uint64_t mant;
     uint16_t exp;

     qemu_get_be64s(f, &mant);
     qemu_get_be16s(f, &exp);
     fp_reg->d = cpu_set_fp80(mant, exp);
     return 0;
 }

 static void put_fpreg(QEMUFile *f, void *opaque, size_t size)
 {
     FPReg *fp_reg = opaque;
     uint64_t mant;
     uint16_t exp;
     /* we save the real CPU data (in case of MMX usage only 'mant'
        contains the MMX register */
     cpu_get_fp80(&mant, &exp, fp_reg->d);
     qemu_put_be64s(f, &mant);
     qemu_put_be16s(f, &exp);
 }

 static const VMStateInfo vmstate_fpreg = {
     .name = "fpreg",
     .get  = get_fpreg,
     .put  = put_fpreg,
 };

 static int get_fpreg_1_mmx(QEMUFile *f, void *opaque, size_t size)
 {
     union x86_longdouble *p = opaque;
     uint64_t mant;

     qemu_get_be64s(f, &mant);
     p->mant = mant;
     p->exp = 0xffff;
     return 0;
 }

 static const VMStateInfo vmstate_fpreg_1_mmx = {
     .name = "fpreg_1_mmx",
     .get  = get_fpreg_1_mmx,
     .put  = put_fpreg_error,
 };

 static int get_fpreg_1_no_mmx(QEMUFile *f, void *opaque, size_t size)
 {
     union x86_longdouble *p = opaque;
     uint64_t mant;

     qemu_get_be64s(f, &mant);
     fp64_to_fp80(p, mant);
     return 0;
 }

 static const VMStateInfo vmstate_fpreg_1_no_mmx = {
     .name = "fpreg_1_no_mmx",
     .get  = get_fpreg_1_no_mmx,
     .put  = put_fpreg_error,
 };

 static bool fpregs_is_0(void *opaque, int version_id)
 {
     CPUState *env = opaque;

     return (env->fpregs_format_vmstate == 0);
 }

 static bool fpregs_is_1_mmx(void *opaque, int version_id)
 {
     CPUState *env = opaque;
     int guess_mmx;

     guess_mmx = ((env->fptag_vmstate == 0xff) &&
                  (env->fpus_vmstate & 0x3800) == 0);
     return (guess_mmx && (env->fpregs_format_vmstate == 1));
 }

 static bool fpregs_is_1_no_mmx(void *opaque, int version_id)
 {
     CPUState *env = opaque;
     int guess_mmx;

     guess_mmx = ((env->fptag_vmstate == 0xff) &&
                  (env->fpus_vmstate & 0x3800) == 0);
     return (!guess_mmx && (env->fpregs_format_vmstate == 1));
 }

 #define VMSTATE_FP_REGS(_field, _state, _n)                               \
     VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_0, vmstate_fpreg, FPReg), \
     VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_1_mmx, vmstate_fpreg_1_mmx, FPReg), \
     VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_1_no_mmx, vmstate_fpreg_1_no_mmx, FPReg)

 #else
 static int get_fpreg(QEMUFile *f, void *opaque, size_t size)
 {
     FPReg *fp_reg = opaque;

     qemu_get_be64s(f, &fp_reg->mmx.MMX_Q(0));
     return 0;
 }

 static void put_fpreg(QEMUFile *f, void *opaque, size_t size)
 {
     FPReg *fp_reg = opaque;
     /* if we use doubles for float emulation, we save the doubles to
        avoid losing information in case of MMX usage. It can give
        problems if the image is restored on a CPU where long
        doubles are used instead. */
     qemu_put_be64s(f, &fp_reg->mmx.MMX_Q(0));
 }

 const VMStateInfo vmstate_fpreg = {
     .name = "fpreg",
     .get  = get_fpreg,
     .put  = put_fpreg,
 };

 static int get_fpreg_0_mmx(QEMUFile *f, void *opaque, size_t size)
 {
     FPReg *fp_reg = opaque;
     uint64_t mant;
     uint16_t exp;

     qemu_get_be64s(f, &mant);
     qemu_get_be16s(f, &exp);
     fp_reg->mmx.MMX_Q(0) = mant;
     return 0;
 }

 const VMStateInfo vmstate_fpreg_0_mmx = {
     .name = "fpreg_0_mmx",
     .get  = get_fpreg_0_mmx,
     .put  = put_fpreg_error,
 };

 static int get_fpreg_0_no_mmx(QEMUFile *f, void *opaque, size_t size)
 {
     FPReg *fp_reg = opaque;
     uint64_t mant;
     uint16_t exp;

     qemu_get_be64s(f, &mant);
     qemu_get_be16s(f, &exp);

     fp_reg->d = cpu_set_fp80(mant, exp);
     return 0;
 }

 const VMStateInfo vmstate_fpreg_0_no_mmx = {
     .name = "fpreg_0_no_mmx",
     .get  = get_fpreg_0_no_mmx,
     .put  = put_fpreg_error,
 };

 static bool fpregs_is_1(void *opaque, int version_id)
 {
     CPUState *env = opaque;

     return env->fpregs_format_vmstate == 1;
 }

 static bool fpregs_is_0_mmx(void *opaque, int version_id)
 {
     CPUState *env = opaque;
     int guess_mmx;

     guess_mmx = ((env->fptag_vmstate == 0xff) &&
                  (env->fpus_vmstate & 0x3800) == 0);
     return guess_mmx && env->fpregs_format_vmstate == 0;
 }

 static bool fpregs_is_0_no_mmx(void *opaque, int version_id)
 {
     CPUState *env = opaque;
     int guess_mmx;

     guess_mmx = ((env->fptag_vmstate == 0xff) &&
                  (env->fpus_vmstate & 0x3800) == 0);
     return !guess_mmx && env->fpregs_format_vmstate == 0;
 }

 #define VMSTATE_FP_REGS(_field, _state, _n)                               \
     VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_1, vmstate_fpreg, FPReg), \
     VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_0_mmx, vmstate_fpreg_0_mmx, FPReg), \
     VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_0_no_mmx, vmstate_fpreg_0_no_mmx, FPReg)

 #endif /* USE_X86LDOUBLE */

 static bool version_is_5(void *opaque, int version_id)
 {
     return version_id == 5;
 }

 #ifdef TARGET_X86_64
 static bool less_than_7(void *opaque, int version_id)
 {
     return version_id < 7;
 }

 static int get_uint64_as_uint32(QEMUFile *f, void *pv, size_t size)
 {
     uint64_t *v = pv;
     *v = qemu_get_be32(f);
     return 0;
 }

 static void put_uint64_as_uint32(QEMUFile *f, void *pv, size_t size)
 {
     uint64_t *v = pv;
     qemu_put_be32(f, *v);
 }

 static const VMStateInfo vmstate_hack_uint64_as_uint32 = {
     .name = "uint64_as_uint32",
     .get  = get_uint64_as_uint32,
     .put  = put_uint64_as_uint32,
 };

 #define VMSTATE_HACK_UINT32(_f, _s, _t)                                  \
     VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint64_as_uint32, uint64_t)
 #endif

 static void cpu_pre_save(void *opaque)
 {
     CPUState *env = opaque;
     int i;

     cpu_synchronize_state(env);

     /* FPU */
     env->fpus_vmstate = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
     env->fptag_vmstate = 0;
     for(i = 0; i < 8; i++) {
         env->fptag_vmstate |= ((!env->fptags[i]) << i);
     }

 #ifdef USE_X86LDOUBLE
     env->fpregs_format_vmstate = 0;
 #else
     env->fpregs_format_vmstate = 1;
 #endif
 }

 static int cpu_pre_load(void *opaque)
 {
     CPUState *env = opaque;

     cpu_synchronize_state(env);
     return 0;
 }

 static int cpu_post_load(void *opaque, int version_id)
 {
     CPUState *env = opaque;
     int i;

     /* XXX: restore FPU round state */
     env->fpstt = (env->fpus_vmstate >> 11) & 7;
     env->fpus = env->fpus_vmstate & ~0x3800;
     env->fptag_vmstate ^= 0xff;
     for(i = 0; i < 8; i++) {
         env->fptags[i] = (env->fptag_vmstate >> i) & 1;
     }

     cpu_breakpoint_remove_all(env, BP_CPU);
     cpu_watchpoint_remove_all(env, BP_CPU);
     for (i = 0; i < 4; i++)
         hw_breakpoint_insert(env, i);

     tlb_flush(env, 1);
     return 0;
 }

 static const VMStateDescription vmstate_cpu = {
     .name = "cpu",
     .version_id = CPU_SAVE_VERSION,
     .minimum_version_id = 3,
     .minimum_version_id_old = 3,
     .pre_save = cpu_pre_save,
     .pre_load = cpu_pre_load,
     .post_load = cpu_post_load,
     .fields      = (VMStateField []) {
         VMSTATE_UINTTL_ARRAY(regs, CPUState, CPU_NB_REGS),
         VMSTATE_UINTTL(eip, CPUState),
         VMSTATE_UINTTL(eflags, CPUState),
         VMSTATE_UINT32(hflags, CPUState),
         /* FPU */
         VMSTATE_UINT16(fpuc, CPUState),
         VMSTATE_UINT16(fpus_vmstate, CPUState),
         VMSTATE_UINT16(fptag_vmstate, CPUState),
         VMSTATE_UINT16(fpregs_format_vmstate, CPUState),
         VMSTATE_FP_REGS(fpregs, CPUState, 8),

         VMSTATE_SEGMENT_ARRAY(segs, CPUState, 6),
         VMSTATE_SEGMENT(ldt, CPUState),
         VMSTATE_SEGMENT(tr, CPUState),
         VMSTATE_SEGMENT(gdt, CPUState),
         VMSTATE_SEGMENT(idt, CPUState),

         VMSTATE_UINT32(sysenter_cs, CPUState),
 #ifdef TARGET_X86_64
         /* Hack: In v7 size changed from 32 to 64 bits on x86_64 */
         VMSTATE_HACK_UINT32(sysenter_esp, CPUState, less_than_7),
         VMSTATE_HACK_UINT32(sysenter_eip, CPUState, less_than_7),
         VMSTATE_UINTTL_V(sysenter_esp, CPUState, 7),
         VMSTATE_UINTTL_V(sysenter_eip, CPUState, 7),
 #else
         VMSTATE_UINTTL(sysenter_esp, CPUState),
         VMSTATE_UINTTL(sysenter_eip, CPUState),
 #endif

         VMSTATE_UINTTL(cr[0], CPUState),
         VMSTATE_UINTTL(cr[2], CPUState),
         VMSTATE_UINTTL(cr[3], CPUState),
         VMSTATE_UINTTL(cr[4], CPUState),
         VMSTATE_UINTTL_ARRAY(dr, CPUState, 8),
         /* MMU */
         VMSTATE_INT32(a20_mask, CPUState),
         /* XMM */
         VMSTATE_UINT32(mxcsr, CPUState),
         VMSTATE_XMM_REGS(xmm_regs, CPUState, CPU_NB_REGS),

 #ifdef TARGET_X86_64
         VMSTATE_UINT64(efer, CPUState),
         VMSTATE_UINT64(star, CPUState),
         VMSTATE_UINT64(lstar, CPUState),
         VMSTATE_UINT64(cstar, CPUState),
         VMSTATE_UINT64(fmask, CPUState),
         VMSTATE_UINT64(kernelgsbase, CPUState),
 #endif
         VMSTATE_UINT32_V(smbase, CPUState, 4),

         VMSTATE_UINT64_V(pat, CPUState, 5),
         VMSTATE_UINT32_V(hflags2, CPUState, 5),

         VMSTATE_UINT32_TEST(halted, CPUState, version_is_5),
         VMSTATE_UINT64_V(vm_hsave, CPUState, 5),
         VMSTATE_UINT64_V(vm_vmcb, CPUState, 5),
         VMSTATE_UINT64_V(tsc_offset, CPUState, 5),
         VMSTATE_UINT64_V(intercept, CPUState, 5),
         VMSTATE_UINT16_V(intercept_cr_read, CPUState, 5),
         VMSTATE_UINT16_V(intercept_cr_write, CPUState, 5),
         VMSTATE_UINT16_V(intercept_dr_read, CPUState, 5),
         VMSTATE_UINT16_V(intercept_dr_write, CPUState, 5),
         VMSTATE_UINT32_V(intercept_exceptions, CPUState, 5),
         VMSTATE_UINT8_V(v_tpr, CPUState, 5),
         /* MTRRs */
         VMSTATE_UINT64_ARRAY_V(mtrr_fixed, CPUState, 11, 8),
         VMSTATE_UINT64_V(mtrr_deftype, CPUState, 8),
         VMSTATE_MTRR_VARS(mtrr_var, CPUState, 8, 8),
         /* KVM-related states */
         VMSTATE_INT32_V(interrupt_injected, CPUState, 9),
         VMSTATE_UINT32_V(mp_state, CPUState, 9),
         VMSTATE_UINT64_V(tsc, CPUState, 9),
         VMSTATE_INT32_V(exception_injected, CPUState, 11),
         VMSTATE_UINT8_V(soft_interrupt, CPUState, 11),
         VMSTATE_UINT8_V(nmi_injected, CPUState, 11),
         VMSTATE_UINT8_V(nmi_pending, CPUState, 11),
         VMSTATE_UINT8_V(has_error_code, CPUState, 11),
         VMSTATE_UINT32_V(sipi_vector, CPUState, 11),
         /* MCE */
         VMSTATE_UINT64_V(mcg_cap, CPUState, 10),
         VMSTATE_UINT64_V(mcg_status, CPUState, 10),
         VMSTATE_UINT64_V(mcg_ctl, CPUState, 10),
         VMSTATE_UINT64_ARRAY_V(mce_banks, CPUState, MCE_BANKS_DEF *4, 10),
         /* rdtscp */
         VMSTATE_UINT64_V(tsc_aux, CPUState, 11),
         /* KVM pvclock msr */
         VMSTATE_UINT64_V(system_time_msr, CPUState, 11),
         VMSTATE_UINT64_V(wall_clock_msr, CPUState, 11),
         VMSTATE_END_OF_LIST()
         /* The above list is not sorted /wrt version numbers, watch out! */
     }
 };

 void cpu_save(QEMUFile *f, void *opaque)
 {
     vmstate_save_state(f, &vmstate_cpu, opaque);
 }

 int cpu_load(QEMUFile *f, void *opaque, int version_id)
 {
     return vmstate_load_state(f, &vmstate_cpu, opaque, version_id);
 }
	#include "hw/hw.h"
	#include "hw/boards.h"
	#include "hw/pc.h"
	#include "hw/isa.h"

	#include "exec-all.h"
	#include "kvm.h"

	static const VMStateDescription vmstate_segment = {
	.name = "segment",
	.version_id = 1,
	.minimum_version_id = 1,
	.minimum_version_id_old = 1,
	.fields = (VMStateField []) {
	VMSTATE_UINT32(selector, SegmentCache),
	VMSTATE_UINTTL(base, SegmentCache),
	VMSTATE_UINT32(limit, SegmentCache),
	VMSTATE_UINT32(flags, SegmentCache),
	VMSTATE_END_OF_LIST()
	}
	};

	#define VMSTATE_SEGMENT(_field, _state) { \
	.name = (stringify(_field)), \
	.size = sizeof(SegmentCache), \
	.vmsd = &vmstate_segment, \
	.flags = VMS_STRUCT, \
	.offset = offsetof(_state, _field) \
	+ type_check(SegmentCache,typeof_field(_state, _field)) \
	}

	#define VMSTATE_SEGMENT_ARRAY(_field, _state, _n) \
	VMSTATE_STRUCT_ARRAY(_field, _state, _n, 0, vmstate_segment, SegmentCache)

	static const VMStateDescription vmstate_xmm_reg = {
	.name = "xmm_reg",
	.version_id = 1,
	.minimum_version_id = 1,
	.minimum_version_id_old = 1,
	.fields = (VMStateField []) {
	VMSTATE_UINT64(XMM_Q(0), XMMReg),
	VMSTATE_UINT64(XMM_Q(1), XMMReg),
	VMSTATE_END_OF_LIST()
	}
	};

	#define VMSTATE_XMM_REGS(_field, _state, _n) \
	VMSTATE_STRUCT_ARRAY(_field, _state, _n, 0, vmstate_xmm_reg, XMMReg)

	static const VMStateDescription vmstate_mtrr_var = {
	.name = "mtrr_var",
	.version_id = 1,
	.minimum_version_id = 1,
	.minimum_version_id_old = 1,
	.fields = (VMStateField []) {
	VMSTATE_UINT64(base, MTRRVar),
	VMSTATE_UINT64(mask, MTRRVar),
	VMSTATE_END_OF_LIST()
	}
	};

	#define VMSTATE_MTRR_VARS(_field, _state, _n, _v) \
	VMSTATE_STRUCT_ARRAY(_field, _state, _n, _v, vmstate_mtrr_var, MTRRVar)

	static void put_fpreg_error(QEMUFile f, void opaque, size_t size)
	{
	fprintf(stderr, "call put_fpreg() with invalid arguments\n");
	exit(0);
	}

	#ifdef USE_X86LDOUBLE
	/* XXX: add that in a FPU generic layer */
	union x86_longdouble {
	uint64_t mant;
	uint16_t exp;
	};

	#define MANTD1(fp) (fp & ((1LL << 52) - 1))
	#define EXPBIAS1 1023
	#define EXPD1(fp) ((fp >> 52) & 0x7FF)
	#define SIGND1(fp) ((fp >> 32) & 0x80000000)

	static void fp64_to_fp80(union x86_longdouble *p, uint64_t temp)
	{
	int e;
	/* mantissa */
	p->mant = (MANTD1(temp) << 11) \| (1LL << 63);
	/* exponent + sign */
	e = EXPD1(temp) - EXPBIAS1 + 16383;
	e \|= SIGND1(temp) >> 16;
	p->exp = e;
	}

	static int get_fpreg(QEMUFile f, void opaque, size_t size)
	{
	FPReg *fp_reg = opaque;
	uint64_t mant;
	uint16_t exp;

	qemu_get_be64s(f, &mant);
	qemu_get_be16s(f, &exp);
	fp_reg->d = cpu_set_fp80(mant, exp);
	return 0;
	}

	static void put_fpreg(QEMUFile f, void opaque, size_t size)
	{
	FPReg *fp_reg = opaque;
	uint64_t mant;
	uint16_t exp;
	/* we save the real CPU data (in case of MMX usage only 'mant'
	contains the MMX register */
	cpu_get_fp80(&mant, &exp, fp_reg->d);
	qemu_put_be64s(f, &mant);
	qemu_put_be16s(f, &exp);
	}

	static const VMStateInfo vmstate_fpreg = {
	.name = "fpreg",
	.get = get_fpreg,
	.put = put_fpreg,
	};

	static int get_fpreg_1_mmx(QEMUFile f, void opaque, size_t size)
	{
	union x86_longdouble *p = opaque;
	uint64_t mant;

	qemu_get_be64s(f, &mant);
	p->mant = mant;
	p->exp = 0xffff;
	return 0;
	}

	static const VMStateInfo vmstate_fpreg_1_mmx = {
	.name = "fpreg_1_mmx",
	.get = get_fpreg_1_mmx,
	.put = put_fpreg_error,
	};

	static int get_fpreg_1_no_mmx(QEMUFile f, void opaque, size_t size)
	{
	union x86_longdouble *p = opaque;
	uint64_t mant;

	qemu_get_be64s(f, &mant);
	fp64_to_fp80(p, mant);
	return 0;
	}

	static const VMStateInfo vmstate_fpreg_1_no_mmx = {
	.name = "fpreg_1_no_mmx",
	.get = get_fpreg_1_no_mmx,
	.put = put_fpreg_error,
	};

	static bool fpregs_is_0(void *opaque, int version_id)
	{
	CPUState *env = opaque;

	return (env->fpregs_format_vmstate == 0);
	}

	static bool fpregs_is_1_mmx(void *opaque, int version_id)
	{
	CPUState *env = opaque;
	int guess_mmx;

	guess_mmx = ((env->fptag_vmstate == 0xff) &&
	(env->fpus_vmstate & 0x3800) == 0);
	return (guess_mmx && (env->fpregs_format_vmstate == 1));
	}

	static bool fpregs_is_1_no_mmx(void *opaque, int version_id)
	{
	CPUState *env = opaque;
	int guess_mmx;

	guess_mmx = ((env->fptag_vmstate == 0xff) &&
	(env->fpus_vmstate & 0x3800) == 0);
	return (!guess_mmx && (env->fpregs_format_vmstate == 1));
	}

	#define VMSTATE_FP_REGS(_field, _state, _n) \
	VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_0, vmstate_fpreg, FPReg), \
	VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_1_mmx, vmstate_fpreg_1_mmx, FPReg), \
	VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_1_no_mmx, vmstate_fpreg_1_no_mmx, FPReg)

	#else
	static int get_fpreg(QEMUFile f, void opaque, size_t size)
	{
	FPReg *fp_reg = opaque;

	qemu_get_be64s(f, &fp_reg->mmx.MMX_Q(0));
	return 0;
	}

	static void put_fpreg(QEMUFile f, void opaque, size_t size)
	{
	FPReg *fp_reg = opaque;
	/* if we use doubles for float emulation, we save the doubles to
	avoid losing information in case of MMX usage. It can give
	problems if the image is restored on a CPU where long
	doubles are used instead. */
	qemu_put_be64s(f, &fp_reg->mmx.MMX_Q(0));
	}

	const VMStateInfo vmstate_fpreg = {
	.name = "fpreg",
	.get = get_fpreg,
	.put = put_fpreg,
	};

	static int get_fpreg_0_mmx(QEMUFile f, void opaque, size_t size)
	{
	FPReg *fp_reg = opaque;
	uint64_t mant;
	uint16_t exp;

	qemu_get_be64s(f, &mant);
	qemu_get_be16s(f, &exp);
	fp_reg->mmx.MMX_Q(0) = mant;
	return 0;
	}

	const VMStateInfo vmstate_fpreg_0_mmx = {
	.name = "fpreg_0_mmx",
	.get = get_fpreg_0_mmx,
	.put = put_fpreg_error,
	};

	static int get_fpreg_0_no_mmx(QEMUFile f, void opaque, size_t size)
	{
	FPReg *fp_reg = opaque;
	uint64_t mant;
	uint16_t exp;

	qemu_get_be64s(f, &mant);
	qemu_get_be16s(f, &exp);

	fp_reg->d = cpu_set_fp80(mant, exp);
	return 0;
	}

	const VMStateInfo vmstate_fpreg_0_no_mmx = {
	.name = "fpreg_0_no_mmx",
	.get = get_fpreg_0_no_mmx,
	.put = put_fpreg_error,
	};

	static bool fpregs_is_1(void *opaque, int version_id)
	{
	CPUState *env = opaque;

	return env->fpregs_format_vmstate == 1;
	}

	static bool fpregs_is_0_mmx(void *opaque, int version_id)
	{
	CPUState *env = opaque;
	int guess_mmx;

	guess_mmx = ((env->fptag_vmstate == 0xff) &&
	(env->fpus_vmstate & 0x3800) == 0);
	return guess_mmx && env->fpregs_format_vmstate == 0;
	}

	static bool fpregs_is_0_no_mmx(void *opaque, int version_id)
	{
	CPUState *env = opaque;
	int guess_mmx;

	guess_mmx = ((env->fptag_vmstate == 0xff) &&
	(env->fpus_vmstate & 0x3800) == 0);
	return !guess_mmx && env->fpregs_format_vmstate == 0;
	}

	#define VMSTATE_FP_REGS(_field, _state, _n) \
	VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_1, vmstate_fpreg, FPReg), \
	VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_0_mmx, vmstate_fpreg_0_mmx, FPReg), \
	VMSTATE_ARRAY_TEST(_field, _state, _n, fpregs_is_0_no_mmx, vmstate_fpreg_0_no_mmx, FPReg)

	#endif /* USE_X86LDOUBLE */

	static bool version_is_5(void *opaque, int version_id)
	{
	return version_id == 5;
	}

	#ifdef TARGET_X86_64
	static bool less_than_7(void *opaque, int version_id)
	{
	return version_id < 7;
	}

	static int get_uint64_as_uint32(QEMUFile f, void pv, size_t size)
	{
	uint64_t *v = pv;
	*v = qemu_get_be32(f);
	return 0;
	}

	static void put_uint64_as_uint32(QEMUFile f, void pv, size_t size)
	{
	uint64_t *v = pv;
	qemu_put_be32(f, *v);
	}

	static const VMStateInfo vmstate_hack_uint64_as_uint32 = {
	.name = "uint64_as_uint32",
	.get = get_uint64_as_uint32,
	.put = put_uint64_as_uint32,
	};

	#define VMSTATE_HACK_UINT32(_f, _s, _t) \
	VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint64_as_uint32, uint64_t)
	#endif

	static void cpu_pre_save(void *opaque)
	{
	CPUState *env = opaque;
	int i;

	cpu_synchronize_state(env);

	/* FPU */
	env->fpus_vmstate = (env->fpus & ~0x3800) \| (env->fpstt & 0x7) << 11;
	env->fptag_vmstate = 0;
	for(i = 0; i < 8; i++) {
	env->fptag_vmstate \|= ((!env->fptags[i]) << i);
	}

	#ifdef USE_X86LDOUBLE
	env->fpregs_format_vmstate = 0;
	#else
	env->fpregs_format_vmstate = 1;
	#endif
	}

	static int cpu_pre_load(void *opaque)
	{
	CPUState *env = opaque;

	cpu_synchronize_state(env);
	return 0;
	}

	static int cpu_post_load(void *opaque, int version_id)
	{
	CPUState *env = opaque;
	int i;

	/* XXX: restore FPU round state */
	env->fpstt = (env->fpus_vmstate >> 11) & 7;
	env->fpus = env->fpus_vmstate & ~0x3800;
	env->fptag_vmstate ^= 0xff;
	for(i = 0; i < 8; i++) {
	env->fptags[i] = (env->fptag_vmstate >> i) & 1;
	}

	cpu_breakpoint_remove_all(env, BP_CPU);
	cpu_watchpoint_remove_all(env, BP_CPU);
	for (i = 0; i < 4; i++)
	hw_breakpoint_insert(env, i);

	tlb_flush(env, 1);
	return 0;
	}

	static const VMStateDescription vmstate_cpu = {
	.name = "cpu",
	.version_id = CPU_SAVE_VERSION,
	.minimum_version_id = 3,
	.minimum_version_id_old = 3,
	.pre_save = cpu_pre_save,
	.pre_load = cpu_pre_load,
	.post_load = cpu_post_load,
	.fields = (VMStateField []) {
	VMSTATE_UINTTL_ARRAY(regs, CPUState, CPU_NB_REGS),
	VMSTATE_UINTTL(eip, CPUState),
	VMSTATE_UINTTL(eflags, CPUState),
	VMSTATE_UINT32(hflags, CPUState),
	/* FPU */
	VMSTATE_UINT16(fpuc, CPUState),
	VMSTATE_UINT16(fpus_vmstate, CPUState),
	VMSTATE_UINT16(fptag_vmstate, CPUState),
	VMSTATE_UINT16(fpregs_format_vmstate, CPUState),
	VMSTATE_FP_REGS(fpregs, CPUState, 8),

	VMSTATE_SEGMENT_ARRAY(segs, CPUState, 6),
	VMSTATE_SEGMENT(ldt, CPUState),
	VMSTATE_SEGMENT(tr, CPUState),
	VMSTATE_SEGMENT(gdt, CPUState),
	VMSTATE_SEGMENT(idt, CPUState),

	VMSTATE_UINT32(sysenter_cs, CPUState),
	#ifdef TARGET_X86_64
	/* Hack: In v7 size changed from 32 to 64 bits on x86_64 */
	VMSTATE_HACK_UINT32(sysenter_esp, CPUState, less_than_7),
	VMSTATE_HACK_UINT32(sysenter_eip, CPUState, less_than_7),
	VMSTATE_UINTTL_V(sysenter_esp, CPUState, 7),
	VMSTATE_UINTTL_V(sysenter_eip, CPUState, 7),
	#else
	VMSTATE_UINTTL(sysenter_esp, CPUState),
	VMSTATE_UINTTL(sysenter_eip, CPUState),
	#endif

	VMSTATE_UINTTL(cr[0], CPUState),
	VMSTATE_UINTTL(cr[2], CPUState),
	VMSTATE_UINTTL(cr[3], CPUState),
	VMSTATE_UINTTL(cr[4], CPUState),
	VMSTATE_UINTTL_ARRAY(dr, CPUState, 8),
	/* MMU */
	VMSTATE_INT32(a20_mask, CPUState),
	/* XMM */
	VMSTATE_UINT32(mxcsr, CPUState),
	VMSTATE_XMM_REGS(xmm_regs, CPUState, CPU_NB_REGS),

	#ifdef TARGET_X86_64
	VMSTATE_UINT64(efer, CPUState),
	VMSTATE_UINT64(star, CPUState),
	VMSTATE_UINT64(lstar, CPUState),
	VMSTATE_UINT64(cstar, CPUState),
	VMSTATE_UINT64(fmask, CPUState),
	VMSTATE_UINT64(kernelgsbase, CPUState),
	#endif
	VMSTATE_UINT32_V(smbase, CPUState, 4),

	VMSTATE_UINT64_V(pat, CPUState, 5),
	VMSTATE_UINT32_V(hflags2, CPUState, 5),

	VMSTATE_UINT32_TEST(halted, CPUState, version_is_5),
	VMSTATE_UINT64_V(vm_hsave, CPUState, 5),
	VMSTATE_UINT64_V(vm_vmcb, CPUState, 5),
	VMSTATE_UINT64_V(tsc_offset, CPUState, 5),
	VMSTATE_UINT64_V(intercept, CPUState, 5),
	VMSTATE_UINT16_V(intercept_cr_read, CPUState, 5),
	VMSTATE_UINT16_V(intercept_cr_write, CPUState, 5),
	VMSTATE_UINT16_V(intercept_dr_read, CPUState, 5),
	VMSTATE_UINT16_V(intercept_dr_write, CPUState, 5),
	VMSTATE_UINT32_V(intercept_exceptions, CPUState, 5),
	VMSTATE_UINT8_V(v_tpr, CPUState, 5),
	/* MTRRs */
	VMSTATE_UINT64_ARRAY_V(mtrr_fixed, CPUState, 11, 8),
	VMSTATE_UINT64_V(mtrr_deftype, CPUState, 8),
	VMSTATE_MTRR_VARS(mtrr_var, CPUState, 8, 8),
	/* KVM-related states */
	VMSTATE_INT32_V(interrupt_injected, CPUState, 9),
	VMSTATE_UINT32_V(mp_state, CPUState, 9),
	VMSTATE_UINT64_V(tsc, CPUState, 9),
	VMSTATE_INT32_V(exception_injected, CPUState, 11),
	VMSTATE_UINT8_V(soft_interrupt, CPUState, 11),
	VMSTATE_UINT8_V(nmi_injected, CPUState, 11),
	VMSTATE_UINT8_V(nmi_pending, CPUState, 11),
	VMSTATE_UINT8_V(has_error_code, CPUState, 11),
	VMSTATE_UINT32_V(sipi_vector, CPUState, 11),
	/* MCE */
	VMSTATE_UINT64_V(mcg_cap, CPUState, 10),
	VMSTATE_UINT64_V(mcg_status, CPUState, 10),
	VMSTATE_UINT64_V(mcg_ctl, CPUState, 10),
	VMSTATE_UINT64_ARRAY_V(mce_banks, CPUState, MCE_BANKS_DEF *4, 10),
	/* rdtscp */
	VMSTATE_UINT64_V(tsc_aux, CPUState, 11),
	/* KVM pvclock msr */
	VMSTATE_UINT64_V(system_time_msr, CPUState, 11),
	VMSTATE_UINT64_V(wall_clock_msr, CPUState, 11),
	VMSTATE_END_OF_LIST()
	/* The above list is not sorted /wrt version numbers, watch out! */
	}
	};

	void cpu_save(QEMUFile f, void opaque)
	{
	vmstate_save_state(f, &vmstate_cpu, opaque);
	}

	int cpu_load(QEMUFile f, void opaque, int version_id)
	{
	return vmstate_load_state(f, &vmstate_cpu, opaque, version_id);
	}