// __asm__ blocks are only checked for inline functions that end up being
// emitted, so call functions with __asm__ blocks to make sure their inline
// assembly parses.
void f() {
__movsb(0, 0, 0);
__movsd(0, 0, 0);
__movsw(0, 0, 0);
__stosd(0, 0, 0);
__stosw(0, 0, 0);
#ifdef _M_X64
__movsq(0, 0, 0);
__stosq(0, 0, 0);
#endif
int info[4];
__cpuid(info, 0);
__cpuidex(info, 0, 0);
_xgetbv(0);
__halt();
__nop();
__readmsr(0);
// FIXME: Call these in 64-bit too once the intrinsics have been fixed to
// work there, PR19301
#ifndef _M_X64
__readcr3();
__writecr3(0);
#endif
#ifdef _M_ARM
__dmb(_ARM_BARRIER_ISHST);
#endif
}
static inline VOID
EmulatorMoveMemory(OUT VOID UNALIGNED *Destination,
IN const VOID UNALIGNED *Source,
IN SIZE_T Length)
{
#if 1
/*
* We use a switch here to detect small moves of memory, as these
* constitute the bulk of our moves.
* Using RtlMoveMemory for all these small moves would be slow otherwise.
*/
switch (Length)
{
case 0:
return;
case sizeof(UCHAR):
*(PUCHAR)Destination = *(PUCHAR)Source;
return;
case sizeof(USHORT):
*(PUSHORT)Destination = *(PUSHORT)Source;
return;
case sizeof(ULONG):
*(PULONG)Destination = *(PULONG)Source;
return;
case sizeof(ULONGLONG):
*(PULONGLONG)Destination = *(PULONGLONG)Source;
return;
default:
#if defined(__GNUC__)
__builtin_memmove(Destination, Source, Length);
#else
RtlMoveMemory(Destination, Source, Length);
#endif
}
#else // defined(_MSC_VER)
PUCHAR Dest = (PUCHAR)Destination;
PUCHAR Src = (PUCHAR)Source;
SIZE_T Count, NewSize = Length;
/* Move dword */
Count = NewSize >> 2; // NewSize / sizeof(ULONG);
NewSize = NewSize & 3; // NewSize % sizeof(ULONG);
__movsd(Dest, Src, Count);
Dest += Count << 2; // Count * sizeof(ULONG);
Src += Count << 2;
/* Move word */
Count = NewSize >> 1; // NewSize / sizeof(USHORT);
NewSize = NewSize & 1; // NewSize % sizeof(USHORT);
__movsw(Dest, Src, Count);
Dest += Count << 1; // Count * sizeof(USHORT);
Src += Count << 1;
/* Move byte */
Count = NewSize; // NewSize / sizeof(UCHAR);
// NewSize = NewSize; // NewSize % sizeof(UCHAR);
__movsb(Dest, Src, Count);
#endif
}
