Syncboot/gnu-efi/lib/runtime/efirtlib.c
Curle d588e232c4 Major overhaul of this branch.
This branch has been dedicated to purely the UEFI bootloader.
As such, all other code has been removed.

This code can be compiled with Visual Studio, gcc or llvm.
2019-07-17 21:10:29 +01:00

146 lines
1.9 KiB
C

/*++
Copyright (c) 1999 Intel Corporation
Module Name:
EfiRtLib.h
Abstract:
EFI Runtime library functions
Revision History
--*/
#include "efi.h"
#include "efilib.h"
#include "efirtlib.h"
#ifndef __GNUC__
#pragma RUNTIME_CODE(RtZeroMem)
#endif
VOID
RUNTIMEFUNCTION
RtZeroMem (
IN VOID *Buffer,
IN UINTN Size
)
{
INT8 *pt;
pt = Buffer;
while (Size--) {
*(pt++) = 0;
}
}
#ifndef __GNUC__
#pragma RUNTIME_CODE(RtSetMem)
#endif
VOID
RUNTIMEFUNCTION
RtSetMem (
IN VOID *Buffer,
IN UINTN Size,
IN UINT8 Value
)
{
INT8 *pt;
pt = Buffer;
while (Size--) {
*(pt++) = Value;
}
}
#ifndef __GNUC__
#pragma RUNTIME_CODE(RtCopyMem)
#endif
VOID
RUNTIMEFUNCTION
RtCopyMem (
IN VOID *Dest,
IN CONST VOID *Src,
IN UINTN len
)
{
CHAR8 *d;
CONST CHAR8 *s = Src;
d = Dest;
while (len--) {
*(d++) = *(s++);
}
}
#ifndef __GNUC__
#pragma RUNTIME_CODE(RtCompareMem)
#endif
INTN
RUNTIMEFUNCTION
RtCompareMem (
IN CONST VOID *Dest,
IN CONST VOID *Src,
IN UINTN len
)
{
CONST CHAR8 *d = Dest, *s = Src;
while (len--) {
if (*d != *s) {
return *d - *s;
}
d += 1;
s += 1;
}
return 0;
}
#ifndef __GNUC__
#pragma RUNTIME_CODE(RtCompareGuid)
#endif
INTN
RUNTIMEFUNCTION
RtCompareGuid (
IN EFI_GUID *Guid1,
IN EFI_GUID *Guid2
)
/*++
Routine Description:
Compares to GUIDs
Arguments:
Guid1 - guid to compare
Guid2 - guid to compare
Returns:
= 0 if Guid1 == Guid2
--*/
{
INT32 *g1, *g2, r;
//
// Compare 32 bits at a time
//
g1 = (INT32 *) Guid1;
g2 = (INT32 *) Guid2;
r = g1[0] - g2[0];
r |= g1[1] - g2[1];
r |= g1[2] - g2[2];
r |= g1[3] - g2[3];
return r;
}