1994-02-11 21:20:17 +03:00
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/*
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1995-04-29 02:43:31 +04:00
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* Written by J.T. Conklin <jtc@netbsd.org>.
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* Public domain.
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1994-02-11 21:20:17 +03:00
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*/
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#include <machine/asm.h>
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2002-03-26 18:17:37 +03:00
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RCSID("$NetBSD: s_floor.S,v 1.7 2002/03/26 15:17:37 fvdl Exp $")
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1994-03-12 04:30:22 +03:00
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1994-02-11 21:20:17 +03:00
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ENTRY(floor)
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2001-06-19 04:26:29 +04:00
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#ifdef __i386__
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1994-02-11 21:20:17 +03:00
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pushl %ebp
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movl %esp,%ebp
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subl $8,%esp
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2002-03-26 18:17:37 +03:00
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fstcw -4(%ebp) /* store fpu control word */
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movw -4(%ebp),%dx
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1994-02-11 21:20:17 +03:00
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orw $0x0400,%dx /* round towards -oo */
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andw $0xf7ff,%dx
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2002-03-26 18:17:37 +03:00
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movw %dx,-8(%ebp)
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fldcw -8(%ebp) /* load modfied control word */
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1994-02-11 21:20:17 +03:00
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fldl 8(%ebp); /* round */
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frndint
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2002-03-26 18:17:37 +03:00
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fldcw -4(%ebp) /* restore original control word */
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1994-02-11 21:20:17 +03:00
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leave
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2001-06-19 04:26:29 +04:00
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#else
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movsd %xmm0, -8(%rsp)
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fstcw -12(%rsp)
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2001-06-19 21:49:36 +04:00
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movw -12(%rsp),%dx
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2001-06-19 04:26:29 +04:00
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orw $0x0400,%dx
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andw $0xf7ff,%dx
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movw %dx,-16(%rsp)
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fldcw -16(%rsp)
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fldl -8(%rsp)
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frndint
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fldcw -12(%rsp)
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fstpl -8(%rsp)
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movsd -8(%rsp),%xmm0
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#endif
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1994-02-11 21:20:17 +03:00
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ret
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