minix/lib/libc/arch/i386/math/fpu_cw.S
Arun Thomas 9a21d1a2fd Macros for symbols used in both ASM and C
-The macros take care of prepending the leading underscore when
 necessary.
2010-08-17 16:44:07 +00:00

18 lines
405 B
ArmAsm

/* fpu_cw_get() - get FPU control word Author: Erik van der Kouwe */
/* fpu_cw_set() - set FPU control word 9 Dec 2009 */
#include <machine/asm.h>
/* u16_t fpu_cw_get(void) */
ENTRY(fpu_cw_get)
/* clear unused bits just to be sure */
xor %eax, %eax
push %eax
fstcw (%esp)
pop %eax
ret
/* void fpu_cw_set(u16_t fpu_cw) */
ENTRY(fpu_cw_set)
/* load control word from parameter */
fldcw 4(%esp)
ret