54 lines
849 B
ArmAsm
54 lines
849 B
ArmAsm
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/*
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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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/*
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* XXXfvdl might as well split this file.
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*/
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#include <machine/asm.h>
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RCSID("$NetBSD: s_copysign.S,v 1.6 2003/07/26 19:25:01 salo Exp $")
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#ifdef __x86_64__
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.Lpos:
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.quad 0x8000000000000000
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.Lneg:
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.quad 0x7fffffffffffffff
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#endif
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ENTRY(copysign)
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#ifdef __i386__
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movl 16(%esp),%edx
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andl $0x80000000,%edx
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movl 8(%esp),%eax
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andl $0x7fffffff,%eax
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orl %edx,%eax
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movl %eax,8(%esp)
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fldl 4(%esp)
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#else
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#if 0
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/*
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* XXXfvdl gas doesn't grok this yet.
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*/
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movq .Lpos(%rip),%xmm2
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movq .Lneg(%rip),%xmm3
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pand %xmm2,%xmm1
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pand %xmm3,%xmm0
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por %xmm1,%xmm0
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#else
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movsd %xmm0,-8(%rsp)
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movsd %xmm1,-16(%rsp)
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movl -12(%rsp),%edx
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andl $0x80000000,%edx
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movl -4(%rsp),%eax
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andl $0x7fffffff,%eax
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orl %edx,%eax
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movl %eax,-4(%rsp)
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movsd -8(%rsp),%xmm0
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#endif
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#endif
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ret
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