diff options
Diffstat (limited to 'lib/msun/i387/s_truncl.S')
| -rw-r--r-- | lib/msun/i387/s_truncl.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/msun/i387/s_truncl.S b/lib/msun/i387/s_truncl.S new file mode 100644 index 0000000..c3815ad --- /dev/null +++ b/lib/msun/i387/s_truncl.S @@ -0,0 +1,29 @@ +/* + * Based on code written by J.T. Conklin <jtc@NetBSD.org>. + * Public domain. + */ + +#include <machine/asm.h> +__FBSDID("$FreeBSD$") + +ENTRY(truncl) + pushl %ebp + movl %esp,%ebp + subl $8,%esp + + fstcw -4(%ebp) /* store fpu control word */ + movw -4(%ebp),%dx + orw $0x0c00,%dx /* round towards -oo */ + movw %dx,-8(%ebp) + fldcw -8(%ebp) /* load modfied control word */ + + fldt 8(%ebp) /* round */ + frndint + + fldcw -4(%ebp) /* restore original control word */ + + leave + ret +END(truncl) + + .section .note.GNU-stack,"",%progbits |
