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Implemented Rtl*ByteSwap() functions, based on a patch by Jon 

Griffiths.
This commit is contained in:
Alexandre Julliard 2003-03-19 00:09:57 +00:00
parent ccf2f6162b
commit 6da4c275ca
3 changed files with 67 additions and 0 deletions
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3
dlls/ntdll/ntdll.spec
View File

@ -530,6 +530,8 @@
@ stdcall RtlTimeToSecondsSince1970(ptr ptr) RtlTimeToSecondsSince1970
@ stdcall RtlTimeToSecondsSince1980(ptr ptr) RtlTimeToSecondsSince1980
@ stdcall RtlTimeToTimeFields (long long) RtlTimeToTimeFields
@ cdecl -i386 -norelay RtlUlongByteSwap() RtlUlongByteSwap
@ cdecl -ret64 RtlUlonglongByteSwap(long long) RtlUlonglongByteSwap
@ stdcall RtlUnicodeStringToAnsiSize(ptr) RtlUnicodeStringToAnsiSize
@ stdcall RtlUnicodeStringToAnsiString(ptr ptr long) RtlUnicodeStringToAnsiString
@ stub RtlUnicodeStringToCountedOemString
@ -554,6 +556,7 @@
@ stdcall RtlUpperChar(long) RtlUpperChar
@ stdcall RtlUpperString(ptr ptr) RtlUpperString
@ stub RtlUsageHeap
@ cdecl -i386 -norelay RtlUshortByteSwap() RtlUshortByteSwap
@ stub RtlValidAcl
@ stdcall RtlValidSecurityDescriptor(ptr) RtlValidSecurityDescriptor
@ stdcall RtlValidSid(ptr) RtlValidSid

47
dlls/ntdll/rtl.c
View File

@ -682,3 +682,50 @@ DWORD WINAPI RtlComputeCrc32(DWORD dwInitial, PBYTE pData, INT iLen)
}
return ~crc;
}
/*************************************************************************
* RtlUlonglongByteSwap [NTDLL.@]
*
* Swap the bytes of an unsigned long long value.
*
* PARAMS
* i [I] Value to swap bytes of
*
* RETURNS
* The value with its bytes swapped.
*/
ULONGLONG __cdecl RtlUlonglongByteSwap(ULONGLONG i)
{
return ((ULONGLONG)RtlUlongByteSwap(i) << 32) | RtlUlongByteSwap(i>>32);
}
/*************************************************************************
* RtlUlongByteSwap [NTDLL.@]
*
* Swap the bytes of an unsigned int value.
*
* NOTES
* ix86 version takes argument in %ecx. Other systems use the inline version.
*/
#ifdef __i386__
__ASM_GLOBAL_FUNC(RtlUlongByteSwap,
"movl %ecx,%eax\n\t"
"bswap %eax\n\t"
"ret");
#endif
/*************************************************************************
* RtlUshortByteSwap [NTDLL.@]
*
* Swap the bytes of an unsigned short value.
*
* NOTES
* i386 version takes argument in %cx. Other systems use the inline version.
*/
#ifdef __i386__
__ASM_GLOBAL_FUNC(RtlUshortByteSwap,
"movb %ch,%al\n\t"
"movb %cl,%ah\n\t"
"ret");
#endif

17
include/winternl.h
View File

@ -1050,6 +1050,7 @@ BOOLEAN WINAPI RtlTimeToSecondsSince1970(const LARGE_INTEGER *,PULONG);
BOOLEAN WINAPI RtlTimeToSecondsSince1980(const LARGE_INTEGER *,LPDWORD);
BOOL WINAPI RtlTryEnterCriticalSection(RTL_CRITICAL_SECTION *);
ULONGLONG __cdecl RtlUlonglongByteSwap(ULONGLONG);
DWORD WINAPI RtlUnicodeStringToAnsiSize(const UNICODE_STRING*);
NTSTATUS WINAPI RtlUnicodeStringToAnsiString(PANSI_STRING,PCUNICODE_STRING,BOOLEAN);
NTSTATUS WINAPI RtlUnicodeStringToInteger(const UNICODE_STRING *,ULONG,ULONG *);
@ -1134,6 +1135,22 @@ inline static BOOLEAN RtlCheckBit(PCRTL_BITMAP lpBits, ULONG ulBit)
memset(_p->BitMapBuffer,0xff,((_p->SizeOfBitMap + 31) & 0xffffffe0) >> 3); \
} while (0)
/* These are implemented as __fastcall, so we can't let Winelib apps link with them */
inline static USHORT RtlUshortByteSwap(USHORT s)
{
return (s >> 8) | (s << 8);
}
inline static ULONG RtlUlongByteSwap(ULONG i)
{
#if defined(__i386__) && defined(__GNUC__)
ULONG ret;
__asm__("bswap %0" : "=r" (ret) : "0" (i) );
return ret;
#else
return ((ULONG)RtlUshortByteSwap(i) << 16) | RtlUshortByteSwap(i >> 16);
#endif
}
/*************************************************************************
* Loader functions and structures.
*