system/wine
system/wine
1
0
Fork 0
mirror of git://source.winehq.org/git/wine.git synced 2024-09-06 21:59:59 +00:00
Code Issues Packages Projects Releases Wiki Activity

ntdll: Avoid depending on compiler support for 64-bit shift functions.

Browse source
This commit is contained in:
Zebediah Figura 2022-07-05 21:32:01 -05:00 committed by Alexandre Julliard
parent 42636254f4
commit 9ef7246243
1 changed files with 42 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

45
dlls/ntdll/large_int.c
View file

@ -812,7 +812,20 @@ ULONGLONG WINAPI _aulldiv( ULONGLONG a, ULONGLONG b )
LONGLONG __stdcall __regs__allshl( LONGLONG a, unsigned char b )
{
return a << b;
const LARGE_INTEGER x = { .QuadPart = a };
LARGE_INTEGER ret;
if (b >= 32)
{
ret.HighPart = x.LowPart << (b & 31);
ret.LowPart = 0;
}
else
{
ret.HighPart = (x.LowPart >> (32 - b)) | (x.HighPart << b);
ret.LowPart = x.LowPart << b;
}
return ret.QuadPart;
}
/******************************************************************************
@ -828,7 +841,20 @@ __ASM_GLOBAL_FUNC( _allshl,
LONGLONG __stdcall __regs__allshr( LONGLONG a, unsigned char b )
{
return a >> b;
const LARGE_INTEGER x = { .QuadPart = a };
LARGE_INTEGER ret;
if (b >= 32)
{
ret.HighPart = x.HighPart >> 31;
ret.LowPart = x.HighPart >> (b & 31);
}
else
{
ret.HighPart = x.HighPart >> b;
ret.LowPart = (x.HighPart << (32 - b)) | (x.LowPart >> b);
}
return ret.QuadPart;
}
/******************************************************************************
@ -844,7 +870,20 @@ __ASM_GLOBAL_FUNC( _allshr,
ULONGLONG __stdcall __regs__aullshr( ULONGLONG a, unsigned char b )
{
return a >> b;
const ULARGE_INTEGER x = { .QuadPart = a };
ULARGE_INTEGER ret;
if (b >= 32)
{
ret.HighPart = 0;
ret.LowPart = x.HighPart >> (b & 31);
}
else
{
ret.HighPart = x.HighPart >> b;
ret.LowPart = (x.HighPart << (32 - b)) | (x.LowPart >> b);
}
return ret.QuadPart;
}
/******************************************************************************