mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
34 lines
578 B
ArmAsm
34 lines
578 B
ArmAsm
|
/* $NetBSD: fpsetround.S,v 1.5 2011/09/30 23:45:41 christos Exp $ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Written by Frank van der Linden at Wasabi Systems for NetBSD.
|
||
|
|
* Public domain.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <machine/asm.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* XXX set both the x87 control word
|
||
|
|
* Applications should only set exception and round flags
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef WEAK_ALIAS
|
||
|
|
WEAK_ALIAS(fpsetround, _fpsetround)
|
||
|
|
ENTRY(_fpsetround)
|
||
|
|
#else
|
||
|
|
ENTRY(fpsetround)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
fnstcw -4(%esp)
|
||
|
|
movl -4(%esp), %edx
|
||
|
|
movl %edx, %eax
|
||
|
|
andl $0x00000c00, %eax
|
||
|
|
andl $0xfffff3ff, %edx
|
||
|
|
movl 4(%esp), %ecx
|
||
|
|
orl %ecx, %edx
|
||
|
|
movl %edx, -4(%esp)
|
||
|
|
fldcw -4(%esp)
|
||
|
|
|
||
|
|
ret
|