projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| b34b60bc JS |
1 | /* |
| 2 | * Written by J.T. Conklin <jtc@NetBSD.org>. | |
| 3 | * Public domain. | |
| 4 | * | |
| 74dfd0cf | 5 | * $NetBSD: s_copysign.S,v 1.7 2011/06/18 20:49:26 joerg Exp |
| b34b60bc JS |
6 | */ |
| 7 | ||
| 8 | /* | |
| 9 | * XXXfvdl might as well split this file. | |
| 10 | */ | |
| 11 | ||
| 12 | #include <machine/asm.h> | |
| 13 | ||
| 14 | #ifdef __x86_64__ | |
| 15 | .Lpos: | |
| 16 | .quad 0x8000000000000000 | |
| 17 | .Lneg: | |
| 18 | .quad 0x7fffffffffffffff | |
| 19 | #endif | |
| 20 | ||
| 21 | ||
| 22 | ENTRY(copysign) | |
| 23 | #ifdef __i386__ | |
| 24 | movl 16(%esp),%edx | |
| 25 | andl $0x80000000,%edx | |
| 26 | movl 8(%esp),%eax | |
| 27 | andl $0x7fffffff,%eax | |
| 28 | orl %edx,%eax | |
| 29 | movl %eax,8(%esp) | |
| 30 | fldl 4(%esp) | |
| 31 | #else | |
| b34b60bc JS |
32 | movq .Lpos(%rip),%xmm2 |
| 33 | movq .Lneg(%rip),%xmm3 | |
| 34 | pand %xmm2,%xmm1 | |
| 35 | pand %xmm3,%xmm0 | |
| 36 | por %xmm1,%xmm0 | |
| b34b60bc JS |
37 | #endif |
| 38 | ret | |
| d04e8698 | 39 | END(copysign) |
| 70e34eb2 JM |
40 | |
| 41 | .section .note.GNU-stack,"",%progbits |