projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 05ecdcef SS |
1 | /* |
| 2 | * Written by J.T. Conklin, Apr 4, 1995 | |
| 3 | * Public domain. | |
| 4 | * | |
| 5 | * $NetBSD: fpgetmask.S,v 1.3 2002/06/12 19:17:22 fvdl Exp $ | |
| 05ecdcef SS |
6 | */ |
| 7 | ||
| 8 | #include <machine/asm.h> | |
| 9 | ||
| 10 | /* | |
| 11 | * XXX only read x87 control word here. If an application only | |
| 12 | * uses the fp* interface to manipulate FP bits, it should | |
| 13 | * always remain in sync with the SSE mxcsr register. | |
| 14 | */ | |
| 15 | ||
| 16 | #ifdef WEAK_ALIAS | |
| 17 | WEAK_ALIAS(fpgetmask, _fpgetmask) | |
| 18 | ENTRY(_fpgetmask) | |
| 19 | #else | |
| 20 | ENTRY(fpgetmask) | |
| 21 | #endif | |
| 22 | fnstcw -4(%rsp) | |
| 23 | movl -4(%rsp),%eax | |
| 24 | notl %eax | |
| 25 | andl $63,%eax | |
| 26 | ret |