1/* 2 * Based on code written by J.T. Conklin <jtc@NetBSD.org>. 3 * Public domain. 4 */ 5 6#include <machine/asm.h> 7__FBSDID("$FreeBSD$") 8 9ENTRY(truncl) 10 pushl %ebp 11 movl %esp,%ebp 12 subl $8,%esp 13 14 fstcw -4(%ebp) /* store fpu control word */ 15 movw -4(%ebp),%dx 16 orw $0x0c00,%dx /* round towards -oo */ 17 movw %dx,-8(%ebp) 18 fldcw -8(%ebp) /* load modfied control word */ 19 20 fldt 8(%ebp) /* round */ 21 frndint 22 23 fldcw -4(%ebp) /* restore original control word */ 24 25 leave 26 ret 27