minix/lib/libc/arch/i386/gen/flt_rounds.S
Lionel Sambuc f14fb60209 Libraries updates and cleanup
* Updating common/lib
 * Updating lib/csu
 * Updating lib/libc
 * Updating libexec/ld.elf_so
 * Corrected test on __minix in featuretest to actually follow the
   meaning of the comment.
 * Cleaned up _REENTRANT-related defintions.
 * Disabled -D_REENTRANT for libfetch
 * Removing some unneeded __NBSD_LIBC defines and tests

Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
2013-01-14 11:36:26 +01:00

21 lines
433 B
ArmAsm

/* $NetBSD: flt_rounds.S,v 1.9 2011/09/30 23:42:00 christos Exp $ */
#include <machine/asm.h>
/*
* 00 0 round to zero
* 01 1 round to nearest
* 10 2 round to positive infinity
* 11 3 round to negative infinity
*/
.text
_ALIGN_TEXT
ENTRY(__flt_rounds)
fnstcw -4(%esp)
movl -4(%esp), %ecx
shrl $9, %ecx
andl $6, %ecx
movl $0x2d, %eax /* 0x2d = 00.10.11.01 */
sarl %cl, %eax /* 0,1,2,3 -> 1,3,2,0 */
andl $3, %eax
ret