27 lines
470 B
ArmAsm
27 lines
470 B
ArmAsm
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/*
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* Based on code 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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__FBSDID("$FreeBSD$")
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ENTRY(truncl)
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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 $0x0c00,%dx /* round towards -oo */
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movw %dx,-8(%ebp)
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fldcw -8(%ebp) /* load modfied control word */
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fldt 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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ret
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