static char lvl_char(const int lvl)
{
switch (lvl)
{
case BT_LOG_VERBOSE:
return 'V';
case BT_LOG_DEBUG:
return 'D';
case BT_LOG_INFO:
return 'I';
case BT_LOG_WARN:
return 'W';
case BT_LOG_ERROR:
return 'E';
case BT_LOG_FATAL:
return 'F';
default:
ASSERT_UNREACHABLE("Bad log level");
return '?';
}
}
static INLINE int apple_lvl(const int lvl)
{
switch (lvl)
{
case BT_LOG_VERBOSE:
return 7; /* ASL_LEVEL_DEBUG / kCFLogLevelDebug */;
case BT_LOG_DEBUG:
return 7; /* ASL_LEVEL_DEBUG / kCFLogLevelDebug */;
case BT_LOG_INFO:
return 6; /* ASL_LEVEL_INFO / kCFLogLevelInfo */;
case BT_LOG_WARN:
return 4; /* ASL_LEVEL_WARNING / kCFLogLevelWarning */;
case BT_LOG_ERROR:
return 3; /* ASL_LEVEL_ERR / kCFLogLevelError */;
case BT_LOG_FATAL:
return 0; /* ASL_LEVEL_EMERG / kCFLogLevelEmergency */;
default:
ASSERT_UNREACHABLE("Bad log level");
return 0; /* ASL_LEVEL_EMERG / kCFLogLevelEmergency */;
}
}
static INLINE int android_lvl(const int lvl)
{
switch (lvl)
{
case BT_LOG_VERBOSE:
return ANDROID_LOG_VERBOSE;
case BT_LOG_DEBUG:
return ANDROID_LOG_DEBUG;
case BT_LOG_INFO:
return ANDROID_LOG_INFO;
case BT_LOG_WARN:
return ANDROID_LOG_WARN;
case BT_LOG_ERROR:
return ANDROID_LOG_ERROR;
case BT_LOG_FATAL:
return ANDROID_LOG_FATAL;
default:
ASSERT_UNREACHABLE("Bad log level");
return ANDROID_LOG_UNKNOWN;
}
}
static void _update_paging_modes(struct vcpu *v)
{
ASSERT_UNREACHABLE();
}
static void _update_cr3(struct vcpu *v, int do_locking)
{
ASSERT_UNREACHABLE();
}
static unsigned long _gva_to_gfn(struct vcpu *v, struct p2m_domain *p2m,
unsigned long va, uint32_t *pfec)
{
ASSERT_UNREACHABLE();
return gfn_x(INVALID_GFN);
}
static bool_t _invlpg(struct vcpu *v, unsigned long va)
{
ASSERT_UNREACHABLE();
return 1;
}
static int _page_fault(struct vcpu *v, unsigned long va,
struct cpu_user_regs *regs)
{
ASSERT_UNREACHABLE();
return 0;
}
int arch_monitor_domctl_event(struct domain *d,
struct xen_domctl_monitor_op *mop)
{
struct arch_domain *ad = &d->arch;
bool_t requested_status = (XEN_DOMCTL_MONITOR_OP_ENABLE == mop->op);
switch ( mop->event )
{
case XEN_DOMCTL_MONITOR_EVENT_WRITE_CTRLREG:
{
unsigned int ctrlreg_bitmask;
bool_t old_status;
/* sanity check: avoid left-shift undefined behavior */
if ( unlikely(mop->u.mov_to_cr.index > 31) )
return -EINVAL;
ctrlreg_bitmask = monitor_ctrlreg_bitmask(mop->u.mov_to_cr.index);
old_status = !!(ad->monitor.write_ctrlreg_enabled & ctrlreg_bitmask);
if ( unlikely(old_status == requested_status) )
return -EEXIST;
domain_pause(d);
if ( mop->u.mov_to_cr.sync )
ad->monitor.write_ctrlreg_sync |= ctrlreg_bitmask;
else
ad->monitor.write_ctrlreg_sync &= ~ctrlreg_bitmask;
if ( mop->u.mov_to_cr.onchangeonly )
ad->monitor.write_ctrlreg_onchangeonly |= ctrlreg_bitmask;
else
ad->monitor.write_ctrlreg_onchangeonly &= ~ctrlreg_bitmask;
if ( requested_status )
ad->monitor.write_ctrlreg_enabled |= ctrlreg_bitmask;
else
ad->monitor.write_ctrlreg_enabled &= ~ctrlreg_bitmask;
if ( VM_EVENT_X86_CR3 == mop->u.mov_to_cr.index )
{
struct vcpu *v;
/* Latches new CR3 mask through CR0 code. */
for_each_vcpu ( d, v )
hvm_update_guest_cr(v, 0);
}
domain_unpause(d);
break;
}
case XEN_DOMCTL_MONITOR_EVENT_MOV_TO_MSR:
{
bool_t old_status;
int rc;
u32 msr = mop->u.mov_to_msr.msr;
domain_pause(d);
old_status = monitored_msr(d, msr);
if ( unlikely(old_status == requested_status) )
{
domain_unpause(d);
return -EEXIST;
}
if ( requested_status )
rc = monitor_enable_msr(d, msr);
else
rc = monitor_disable_msr(d, msr);
domain_unpause(d);
return rc;
}
case XEN_DOMCTL_MONITOR_EVENT_SINGLESTEP:
{
bool_t old_status = ad->monitor.singlestep_enabled;
if ( unlikely(old_status == requested_status) )
return -EEXIST;
domain_pause(d);
ad->monitor.singlestep_enabled = requested_status;
domain_unpause(d);
break;
}
case XEN_DOMCTL_MONITOR_EVENT_SOFTWARE_BREAKPOINT:
{
bool_t old_status = ad->monitor.software_breakpoint_enabled;
if ( unlikely(old_status == requested_status) )
return -EEXIST;
domain_pause(d);
ad->monitor.software_breakpoint_enabled = requested_status;
domain_unpause(d);
break;
}
case XEN_DOMCTL_MONITOR_EVENT_DEBUG_EXCEPTION:
{
bool_t old_status = ad->monitor.debug_exception_enabled;
if ( unlikely(old_status == requested_status) )
return -EEXIST;
domain_pause(d);
ad->monitor.debug_exception_enabled = requested_status;
ad->monitor.debug_exception_sync = requested_status ?
mop->u.debug_exception.sync :
0;
domain_unpause(d);
break;
}
case XEN_DOMCTL_MONITOR_EVENT_CPUID:
{
bool_t old_status = ad->monitor.cpuid_enabled;
if ( unlikely(old_status == requested_status) )
return -EEXIST;
domain_pause(d);
ad->monitor.cpuid_enabled = requested_status;
domain_unpause(d);
break;
}
default:
/*
* Should not be reached unless arch_monitor_get_capabilities() is
* not properly implemented.
*/
ASSERT_UNREACHABLE();
return -EOPNOTSUPP;
}
return 0;
}
int hvm_process_io_intercept(const struct hvm_io_handler *handler,
ioreq_t *p)
{
const struct hvm_io_ops *ops = handler->ops;
int rc = X86EMUL_OKAY, i, step = p->df ? -p->size : p->size;
uint64_t data;
uint64_t addr;
if ( p->dir == IOREQ_READ )
{
for ( i = 0; i < p->count; i++ )
{
addr = (p->type == IOREQ_TYPE_COPY) ?
p->addr + step * i :
p->addr;
rc = ops->read(handler, addr, p->size, &data);
if ( rc != X86EMUL_OKAY )
break;
if ( p->data_is_ptr )
{
switch ( hvm_copy_to_guest_phys(p->data + step * i,
&data, p->size) )
{
case HVMCOPY_okay:
break;
case HVMCOPY_bad_gfn_to_mfn:
/* Drop the write as real hardware would. */
continue;
case HVMCOPY_bad_gva_to_gfn:
case HVMCOPY_gfn_paged_out:
case HVMCOPY_gfn_shared:
ASSERT_UNREACHABLE();
/* fall through */
default:
domain_crash(current->domain);
return X86EMUL_UNHANDLEABLE;
}
}
else
p->data = data;
}
}
else /* p->dir == IOREQ_WRITE */
{
for ( i = 0; i < p->count; i++ )
{
if ( p->data_is_ptr )
{
switch ( hvm_copy_from_guest_phys(&data, p->data + step * i,
p->size) )
{
case HVMCOPY_okay:
break;
case HVMCOPY_bad_gfn_to_mfn:
data = ~0;
break;
case HVMCOPY_bad_gva_to_gfn:
case HVMCOPY_gfn_paged_out:
case HVMCOPY_gfn_shared:
ASSERT_UNREACHABLE();
/* fall through */
default:
domain_crash(current->domain);
return X86EMUL_UNHANDLEABLE;
}
}
else
data = p->data;
addr = (p->type == IOREQ_TYPE_COPY) ?
p->addr + step * i :
p->addr;
rc = ops->write(handler, addr, p->size, data);
if ( rc != X86EMUL_OKAY )
break;
}
}
if ( i )
{
p->count = i;
rc = X86EMUL_OKAY;
}
else if ( rc == X86EMUL_UNHANDLEABLE )
{
/*
* Don't forward entire batches to the device model: This would
* prevent the internal handlers to see subsequent iterations of
* the request.
*/
p->count = 1;
}
return rc;
}
