54 lines
878 B
ArmAsm
54 lines
878 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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#include <machine/asm.h>
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/*
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* XXXfvdl split this file.
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*/
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RCSID("$NetBSD: s_copysignf.S,v 1.5 2003/07/26 19:25:01 salo Exp $")
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#ifdef __x86_64__
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.Lneg:
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.long 0x7fffffff
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.Lpos:
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.long 0x80000000
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#endif
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ENTRY(copysignf)
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#ifdef __i386__
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movl 8(%esp),%edx
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andl $0x80000000,%edx
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movl 4(%esp),%eax
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andl $0x7fffffff,%eax
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orl %edx,%eax
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movl %eax,4(%esp)
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flds 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.
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* but it's legal according to the p4 manual.
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*/
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movss .Lpos(%rip),%xmm2
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movss .Lneg(%rip),%xmm3
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pandq %xmm2,%xmm1
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pandq %xmm3,%xmm0
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porq %xmm1,%xmm0
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#else
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movss %xmm0,-4(%rsp)
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movss %xmm1,-8(%rsp)
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movl -8(%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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movss -4(%rsp),%xmm0
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#endif
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#endif
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ret
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