29 lines
521 B
ArmAsm
29 lines
521 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 1.4 1995/05/09 00:01:59 jtc Exp $")
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ENTRY(floor)
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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 -12(%ebp) /* store fpu control word */
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movw -12(%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,-16(%ebp)
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fldcw -16(%ebp) /* load modfied control word */
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fldl 8(%ebp); /* round */
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frndint
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fldcw -12(%ebp) /* restore original control word */
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leave
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ret
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