54 lines
849 B
ArmAsm
54 lines
849 B
ArmAsm
/*
|
|
* Written by J.T. Conklin <jtc@netbsd.org>.
|
|
* Public domain.
|
|
*/
|
|
|
|
/*
|
|
* XXXfvdl might as well split this file.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
RCSID("$NetBSD: s_copysign.S,v 1.5 2001/06/19 00:26:30 fvdl Exp $")
|
|
|
|
#ifdef __x86_64__
|
|
.Lpos:
|
|
.quad 0x8000000000000000
|
|
.Lneg:
|
|
.quad 0x7fffffffffffffff
|
|
#endif
|
|
|
|
|
|
ENTRY(copysign)
|
|
#ifdef __i386__
|
|
movl 16(%esp),%edx
|
|
andl $0x80000000,%edx
|
|
movl 8(%esp),%eax
|
|
andl $0x7fffffff,%eax
|
|
orl %edx,%eax
|
|
movl %eax,8(%esp)
|
|
fldl 4(%esp)
|
|
#else
|
|
#if 0
|
|
/*
|
|
* XXXfvdl gas doesn't grok this yet.
|
|
*/
|
|
movq .Lpos(%rip),%xmm2
|
|
movq .Lneg(%rip),%xmm3
|
|
pand %xmm2,%xmm1
|
|
pand %xmm3,%xmm0
|
|
por %xmm1,%xmm0
|
|
#else
|
|
movsd %xmm0,-8(%rsp)
|
|
movsd %xmm1,-16(%rsp)
|
|
movl -12(%rsp),%edx
|
|
andl $0x80000000,%edx
|
|
movl -4(%rsp),%eax
|
|
andl $0x7fffffff,%eax
|
|
orl %edx,%eax
|
|
movl %eax,-4(%rsp)
|
|
movsd -8(%rsp),%xmm0
|
|
#endif
|
|
#endif
|
|
ret
|