qemu/target-i386/machine.c
Avi Kivity 21e87c4625 i386: wire up MSR_IA32_MISC_ENABLE
It's needed for its default value - bit 0 specifies that "rep movs" is
good enough for memcpy, and Linux may use a slower memcpu if it is not set,
depending on cpu family/model.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-10-24 21:33:32 -02:00

480 lines
14 KiB
C

#include "hw/hw.h"
#include "hw/boards.h"
#include "hw/pc.h"
#include "hw/isa.h"
#include "cpu.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)
/* YMMH format is the same as XMM */
static const VMStateDescription vmstate_ymmh_reg = {
.name = "ymmh_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_YMMH_REGS_VARS(_field, _state, _n, _v) \
VMSTATE_STRUCT_ARRAY(_field, _state, _n, _v, vmstate_ymmh_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);
}
/* 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)
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;
/* 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);
}
env->fpregs_format_vmstate = 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 bool async_pf_msr_needed(void *opaque)
{
CPUState *cpu = opaque;
return cpu->async_pf_en_msr != 0;
}
static const VMStateDescription vmstate_async_pf_msr = {
.name = "cpu/async_pf_msr",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT64(async_pf_en_msr, CPUState),
VMSTATE_END_OF_LIST()
}
};
static bool fpop_ip_dp_needed(void *opaque)
{
CPUState *env = opaque;
return env->fpop != 0 || env->fpip != 0 || env->fpdp != 0;
}
static const VMStateDescription vmstate_fpop_ip_dp = {
.name = "cpu/fpop_ip_dp",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT16(fpop, CPUState),
VMSTATE_UINT64(fpip, CPUState),
VMSTATE_UINT64(fpdp, CPUState),
VMSTATE_END_OF_LIST()
}
};
static bool tscdeadline_needed(void *opaque)
{
CPUState *env = opaque;
return env->tsc_deadline != 0;
}
static const VMStateDescription vmstate_msr_tscdeadline = {
.name = "cpu/msr_tscdeadline",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT64(tsc_deadline, CPUState),
VMSTATE_END_OF_LIST()
}
};
static bool misc_enable_needed(void *opaque)
{
CPUState *env = opaque;
return env->msr_ia32_misc_enable != MSR_IA32_MISC_ENABLE_DEFAULT;
}
static const VMStateDescription vmstate_msr_ia32_misc_enable = {
.name = "cpu/msr_ia32_misc_enable",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT64(msr_ia32_misc_enable, CPUState),
VMSTATE_END_OF_LIST()
}
};
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,
.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),
/* XSAVE related fields */
VMSTATE_UINT64_V(xcr0, CPUState, 12),
VMSTATE_UINT64_V(xstate_bv, CPUState, 12),
VMSTATE_YMMH_REGS_VARS(ymmh_regs, CPUState, CPU_NB_REGS, 12),
VMSTATE_END_OF_LIST()
/* The above list is not sorted /wrt version numbers, watch out! */
},
.subsections = (VMStateSubsection []) {
{
.vmsd = &vmstate_async_pf_msr,
.needed = async_pf_msr_needed,
} , {
.vmsd = &vmstate_fpop_ip_dp,
.needed = fpop_ip_dp_needed,
}, {
.vmsd = &vmstate_msr_tscdeadline,
.needed = tscdeadline_needed,
}, {
.vmsd = &vmstate_msr_ia32_misc_enable,
.needed = misc_enable_needed,
} , {
/* empty */
}
}
};
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);
}