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reactos/lib/sdk/crt/math/amd64/floorf.S

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[CRT] - Add a number of amd64 specific math functions - add generic c versions of cos and sin - Remove leading underscores from amd64 symbols svn path=/trunk/; revision=48161
2010-07-21 16:03:44 +00:00
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
* PURPOSE: Implementation of tan
* FILE: lib/sdk/crt/math/amd64/floorf.S
* PROGRAMMER: Timo Kreuzer (timo.kreuzer@reactos.org)
*/
/* INCLUDES ******************************************************************/
#include <reactos/asm.h>
#include <ndk/amd64/asm.h>
/* FUNCTIONS ****************************************************************/
.code64
PUBLIC floorf
floorf:
[CRT] - Make all x86assembly ML compatible - Remove memcpy, it was duplicated from memmove, copy the label instead - Guard some code against compilation on msvc, as these functions are intrinsics on MSVC and cannot be implemented - Fix some x64 assembly (don't modify stack below rsp) svn path=/branches/cmake-bringup/; revision=49421
2010-11-02 00:06:33 +00:00
sub rsp, 16
[CRT] - Add a number of amd64 specific math functions - add generic c versions of cos and sin - Remove leading underscores from amd64 symbols svn path=/trunk/; revision=48161
2010-07-21 16:03:44 +00:00
/* Put parameter on the stack */
[CRT] - Make all x86assembly ML compatible - Remove memcpy, it was duplicated from memmove, copy the label instead - Guard some code against compilation on msvc, as these functions are intrinsics on MSVC and cannot be implemented - Fix some x64 assembly (don't modify stack below rsp) svn path=/branches/cmake-bringup/; revision=49421
2010-11-02 00:06:33 +00:00
movss [rsp], xmm0
[CRT] - Add a number of amd64 specific math functions - add generic c versions of cos and sin - Remove leading underscores from amd64 symbols svn path=/trunk/; revision=48161
2010-07-21 16:03:44 +00:00
fld dword ptr [rsp]
/* Change fpu control word to round down */
[CRT] - Make all x86assembly ML compatible - Remove memcpy, it was duplicated from memmove, copy the label instead - Guard some code against compilation on msvc, as these functions are intrinsics on MSVC and cannot be implemented - Fix some x64 assembly (don't modify stack below rsp) svn path=/branches/cmake-bringup/; revision=49421
2010-11-02 00:06:33 +00:00
fstcw [rsp]
mov eax, [rsp]
[CRT] - Add a number of amd64 specific math functions - add generic c versions of cos and sin - Remove leading underscores from amd64 symbols svn path=/trunk/; revision=48161
2010-07-21 16:03:44 +00:00
or eax, 0x00400
and eax, 0x0f7ff
[CRT] - Make all x86assembly ML compatible - Remove memcpy, it was duplicated from memmove, copy the label instead - Guard some code against compilation on msvc, as these functions are intrinsics on MSVC and cannot be implemented - Fix some x64 assembly (don't modify stack below rsp) svn path=/branches/cmake-bringup/; revision=49421
2010-11-02 00:06:33 +00:00
mov [rsp + 8], eax
fldcw [rsp + 8]
[CRT] - Add a number of amd64 specific math functions - add generic c versions of cos and sin - Remove leading underscores from amd64 symbols svn path=/trunk/; revision=48161
2010-07-21 16:03:44 +00:00
/* Round to integer */
frndint
/* Restore fpu control word */
[CRT] - Make all x86assembly ML compatible - Remove memcpy, it was duplicated from memmove, copy the label instead - Guard some code against compilation on msvc, as these functions are intrinsics on MSVC and cannot be implemented - Fix some x64 assembly (don't modify stack below rsp) svn path=/branches/cmake-bringup/; revision=49421
2010-11-02 00:06:33 +00:00
fldcw [rsp]
[CRT] - Add a number of amd64 specific math functions - add generic c versions of cos and sin - Remove leading underscores from amd64 symbols svn path=/trunk/; revision=48161
2010-07-21 16:03:44 +00:00
[CRT] - Make all x86assembly ML compatible - Remove memcpy, it was duplicated from memmove, copy the label instead - Guard some code against compilation on msvc, as these functions are intrinsics on MSVC and cannot be implemented - Fix some x64 assembly (don't modify stack below rsp) svn path=/branches/cmake-bringup/; revision=49421
2010-11-02 00:06:33 +00:00
fstp dword ptr [rsp]
movss xmm0, [rsp]
add rsp, 16
[CRT] - Add a number of amd64 specific math functions - add generic c versions of cos and sin - Remove leading underscores from amd64 symbols svn path=/trunk/; revision=48161
2010-07-21 16:03:44 +00:00
ret
[CRT] - Make all x86assembly ML compatible - Remove memcpy, it was duplicated from memmove, copy the label instead - Guard some code against compilation on msvc, as these functions are intrinsics on MSVC and cannot be implemented - Fix some x64 assembly (don't modify stack below rsp) svn path=/branches/cmake-bringup/; revision=49421
2010-11-02 00:06:33 +00:00
END
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