44 lines
758 B
ArmAsm
44 lines
758 B
ArmAsm
/*
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* Written by J.T. Conklin <jtc@NetBSD.org>.
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* Public domain.
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*/
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#include <machine/asm.h>
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RCSID("$NetBSD: s_floor.S,v 1.9 2011/06/18 21:24:51 joerg Exp $")
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ENTRY(floor)
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#ifdef __i386__
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pushl %ebp
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movl %esp,%ebp
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subl $8,%esp
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fstcw -4(%ebp) /* store fpu control word */
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movw -4(%ebp),%dx
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orw $0x0400,%dx /* round towards -oo */
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andw $0xf7ff,%dx
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movw %dx,-8(%ebp)
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fldcw -8(%ebp) /* load modfied control word */
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fldl 8(%ebp) /* round */
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frndint
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fldcw -4(%ebp) /* restore original control word */
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leave
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#else
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movsd %xmm0, -8(%rsp)
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fstcw -12(%rsp)
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movw -12(%rsp),%dx
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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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ret
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