diff options
Diffstat (limited to 'lib/libc/arch/x86_64/gen/flt_rounds.S')
| -rw-r--r-- | lib/libc/arch/x86_64/gen/flt_rounds.S | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/libc/arch/x86_64/gen/flt_rounds.S b/lib/libc/arch/x86_64/gen/flt_rounds.S new file mode 100644 index 00000000000..009c59ab64a --- /dev/null +++ b/lib/libc/arch/x86_64/gen/flt_rounds.S @@ -0,0 +1,30 @@ +/* $OpenBSD: flt_rounds.S,v 1.1 2004/01/28 01:44:45 mickey Exp $ */ +/* $NetBSD: flt_rounds.S,v 1.2 2002/06/06 23:04:35 fvdl Exp $ */ + +/* + * Written by J.T. Conklin, Apr 4, 1995 + * Public domain. + */ + +#include <machine/asm.h> + + .text + _ALIGN_TEXT +_map: + .byte 1 /* round to nearest */ + .byte 3 /* round to negative infinity */ + .byte 2 /* round to positive infinity */ + .byte 0 /* round to zero */ + +ENTRY(__flt_rounds) + fnstcw -4(%rsp) + movl -4(%rsp),%eax + shrl $10,%eax + andl $3,%eax +#ifdef PIC + leaq PIC_GOT(_map),%rcx + movb (%rcx,%rax,1),%al +#else + movb _map(,%rax,1),%al +#endif + ret |